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FFmpeg/libavformat/movenc.c

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  1. /*

  2.  * MOV, 3GP, MP4 muxer

  3.  * Copyright (c) 2003 Thomas Raivio

  4.  * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>

  5.  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>

  6.  *

  7.  * This file is part of FFmpeg.

  8.  *

  9.  * FFmpeg is free software; you can redistribute it and/or

  10.  * modify it under the terms of the GNU Lesser General Public

  11.  * License as published by the Free Software Foundation; either

  12.  * version 2.1 of the License, or (at your option) any later version.

  13.  *

  14.  * FFmpeg is distributed in the hope that it will be useful,

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  17.  * Lesser General Public License for more details.

  18.  *

  19.  * You should have received a copy of the GNU Lesser General Public

  20.  * License along with FFmpeg; if not, write to the Free Software

  21.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  22.  */

  23. 

  24. #include <stdint.h>

  25. #include <inttypes.h>

  26. 

  27. #include "movenc.h"

  28. #include "avformat.h"

  29. #include "avio_internal.h"

  30. #include "riff.h"

  31. #include "avio.h"

  32. #include "isom.h"

  33. #include "avc.h"

  34. #include "libavcodec/ac3_parser.h"

  35. #include "libavcodec/dnxhddata.h"

  36. #include "libavcodec/flac.h"

  37. #include "libavcodec/get_bits.h"

  38. 

  39. #include "libavcodec/internal.h"

  40. #include "libavcodec/put_bits.h"

  41. #include "libavcodec/vc1_common.h"

  42. #include "libavcodec/raw.h"

  43. #include "internal.h"

  44. #include "libavutil/avstring.h"

  45. #include "libavutil/intfloat.h"

  46. #include "libavutil/mathematics.h"

  47. #include "libavutil/libm.h"

  48. #include "libavutil/opt.h"

  49. #include "libavutil/dict.h"

  50. #include "libavutil/pixdesc.h"

  51. #include "libavutil/stereo3d.h"

  52. #include "libavutil/timecode.h"

  53. #include "libavutil/color_utils.h"

  54. #include "hevc.h"

  55. #include "rtpenc.h"

  56. #include "mov_chan.h"

  57. #include "vpcc.h"

  58. 

  59. static const AVOption options[] = {

  60.     { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  61.     { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  62.     { "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },

  63.     { "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  64.     { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  65.     { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  66.     { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  67.     { "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  68.     { "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  69.     { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  70.     { "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  71.     { "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  72.     { "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  73.     { "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  74.     { "delay_moov", "Delay writing the initial moov until the first fragment is cut, or until the first fragment flush", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DELAY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  75.     { "global_sidx", "Write a global sidx index at the start of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_GLOBAL_SIDX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  76.     { "write_colr", "Write colr atom (Experimental, may be renamed or changed, do not use from scripts)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_COLR}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  77.     { "write_gama", "Write deprecated gama atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_GAMA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  78.     { "use_metadata_tags", "Use mdta atom for metadata.", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_USE_MDTA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  79.     { "skip_trailer", "Skip writing the mfra/tfra/mfro trailer for fragmented files", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_TRAILER}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },

  80.     FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),

  81.     { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  82.     { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},

  83.     { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},

  84.     { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  85.     { "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  86.     { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  87.     { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  88.     { "video_track_timescale", "set timescale of all video tracks", offsetof(MOVMuxContext, video_track_timescale), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  89.     { "brand",    "Override major brand", offsetof(MOVMuxContext, major_brand),   AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },

  90.     { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},

  91.     { "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

  92.     { "mov_gamma", "gamma value for gama atom", offsetof(MOVMuxContext, gamma), AV_OPT_TYPE_FLOAT, {.dbl = 0.0 }, 0.0, 10, AV_OPT_FLAG_ENCODING_PARAM},

  93.     { "frag_interleave", "Interleave samples within fragments (max number of consecutive samples, lower is tighter interleaving, but with more overhead)", offsetof(MOVMuxContext, frag_interleave), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },

  94.     { "encryption_scheme",    "Configures the encryption scheme, allowed values are none, cenc-aes-ctr", offsetof(MOVMuxContext, encryption_scheme_str),   AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },

  95.     { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },

  96.     { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },

  97.     { "use_stream_ids_as_track_ids", "use stream ids as track ids", offsetof(MOVMuxContext, use_stream_ids_as_track_ids), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  98.     { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},

  99.     { NULL },

  100. };

  101. 

  102. #define MOV_CLASS(flavor)\

  103. static const AVClass flavor ## _muxer_class = {\

  104.     .class_name = #flavor " muxer",\

  105.     .item_name  = av_default_item_name,\

  106.     .option     = options,\

  107.     .version    = LIBAVUTIL_VERSION_INT,\

  108. };

  109. 

  110. static int get_moov_size(AVFormatContext *s);

  111. 

  112. static int utf8len(const uint8_t *b)

  113. {

  114.     int len = 0;

  115.     int val;

  116.     while (*b) {

  117.         GET_UTF8(val, *b++, return -1;)

  118.         len++;

  119.     }

  120.     return len;

  121. }

  122. 

  123. //FIXME support 64 bit variant with wide placeholders

  124. static int64_t update_size(AVIOContext *pb, int64_t pos)

  125. {

  126.     int64_t curpos = avio_tell(pb);

  127.     avio_seek(pb, pos, SEEK_SET);

  128.     avio_wb32(pb, curpos - pos); /* rewrite size */

  129.     avio_seek(pb, curpos, SEEK_SET);

  130. 

  131.     return curpos - pos;

  132. }

  133. 

  134. static int co64_required(const MOVTrack *track)

  135. {

  136.     if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)

  137.         return 1;

  138.     return 0;

  139. }

  140. 

  141. /* Chunk offset atom */

  142. static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)

  143. {

  144.     int i;

  145.     int mode64 = co64_required(track); // use 32 bit size variant if possible

  146.     int64_t pos = avio_tell(pb);

  147.     avio_wb32(pb, 0); /* size */

  148.     if (mode64)

  149.         ffio_wfourcc(pb, "co64");

  150.     else

  151.         ffio_wfourcc(pb, "stco");

  152.     avio_wb32(pb, 0); /* version & flags */

  153.     avio_wb32(pb, track->chunkCount); /* entry count */

  154.     for (i = 0; i < track->entry; i++) {

  155.         if (!track->cluster[i].chunkNum)

  156.             continue;

  157.         if (mode64 == 1)

  158.             avio_wb64(pb, track->cluster[i].pos + track->data_offset);

  159.         else

  160.             avio_wb32(pb, track->cluster[i].pos + track->data_offset);

  161.     }

  162.     return update_size(pb, pos);

  163. }

  164. 

  165. /* Sample size atom */

  166. static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)

  167. {

  168.     int equalChunks = 1;

  169.     int i, j, entries = 0, tst = -1, oldtst = -1;

  170. 

  171.     int64_t pos = avio_tell(pb);

  172.     avio_wb32(pb, 0); /* size */

  173.     ffio_wfourcc(pb, "stsz");

  174.     avio_wb32(pb, 0); /* version & flags */

  175. 

  176.     for (i = 0; i < track->entry; i++) {

  177.         tst = track->cluster[i].size / track->cluster[i].entries;

  178.         if (oldtst != -1 && tst != oldtst)

  179.             equalChunks = 0;

  180.         oldtst = tst;

  181.         entries += track->cluster[i].entries;

  182.     }

  183.     if (equalChunks && track->entry) {

  184.         int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;

  185.         sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0

  186.         avio_wb32(pb, sSize); // sample size

  187.         avio_wb32(pb, entries); // sample count

  188.     } else {

  189.         avio_wb32(pb, 0); // sample size

  190.         avio_wb32(pb, entries); // sample count

  191.         for (i = 0; i < track->entry; i++) {

  192.             for (j = 0; j < track->cluster[i].entries; j++) {

  193.                 avio_wb32(pb, track->cluster[i].size /

  194.                           track->cluster[i].entries);

  195.             }

  196.         }

  197.     }

  198.     return update_size(pb, pos);

  199. }

  200. 

  201. /* Sample to chunk atom */

  202. static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)

  203. {

  204.     int index = 0, oldval = -1, i;

  205.     int64_t entryPos, curpos;

  206. 

  207.     int64_t pos = avio_tell(pb);

  208.     avio_wb32(pb, 0); /* size */

  209.     ffio_wfourcc(pb, "stsc");

  210.     avio_wb32(pb, 0); // version & flags

  211.     entryPos = avio_tell(pb);

  212.     avio_wb32(pb, track->chunkCount); // entry count

  213.     for (i = 0; i < track->entry; i++) {

  214.         if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {

  215.             avio_wb32(pb, track->cluster[i].chunkNum); // first chunk

  216.             avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk

  217.             avio_wb32(pb, 0x1); // sample description index

  218.             oldval = track->cluster[i].samples_in_chunk;

  219.             index++;

  220.         }

  221.     }

  222.     curpos = avio_tell(pb);

  223.     avio_seek(pb, entryPos, SEEK_SET);

  224.     avio_wb32(pb, index); // rewrite size

  225.     avio_seek(pb, curpos, SEEK_SET);

  226. 

  227.     return update_size(pb, pos);

  228. }

  229. 

  230. /* Sync sample atom */

  231. static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)

  232. {

  233.     int64_t curpos, entryPos;

  234.     int i, index = 0;

  235.     int64_t pos = avio_tell(pb);

  236.     avio_wb32(pb, 0); // size

  237.     ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");

  238.     avio_wb32(pb, 0); // version & flags

  239.     entryPos = avio_tell(pb);

  240.     avio_wb32(pb, track->entry); // entry count

  241.     for (i = 0; i < track->entry; i++) {

  242.         if (track->cluster[i].flags & flag) {

  243.             avio_wb32(pb, i + 1);

  244.             index++;

  245.         }

  246.     }

  247.     curpos = avio_tell(pb);

  248.     avio_seek(pb, entryPos, SEEK_SET);

  249.     avio_wb32(pb, index); // rewrite size

  250.     avio_seek(pb, curpos, SEEK_SET);

  251.     return update_size(pb, pos);

  252. }

  253. 

  254. static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)

  255. {

  256.     avio_wb32(pb, 0x11); /* size */

  257.     if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");

  258.     else                         ffio_wfourcc(pb, "damr");

  259.     ffio_wfourcc(pb, "FFMP");

  260.     avio_w8(pb, 0); /* decoder version */

  261. 

  262.     avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */

  263.     avio_w8(pb, 0x00); /* Mode change period (no restriction) */

  264.     avio_w8(pb, 0x01); /* Frames per sample */

  265.     return 0x11;

  266. }

  267. 

  268. static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)

  269. {

  270.     GetBitContext gbc;

  271.     PutBitContext pbc;

  272.     uint8_t buf[3];

  273.     int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;

  274. 

  275.     if (track->vos_len < 7)

  276.         return -1;

  277. 

  278.     avio_wb32(pb, 11);

  279.     ffio_wfourcc(pb, "dac3");

  280. 

  281.     init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);

  282.     fscod      = get_bits(&gbc, 2);

  283.     frmsizecod = get_bits(&gbc, 6);

  284.     bsid       = get_bits(&gbc, 5);

  285.     bsmod      = get_bits(&gbc, 3);

  286.     acmod      = get_bits(&gbc, 3);

  287.     if (acmod == 2) {

  288.         skip_bits(&gbc, 2); // dsurmod

  289.     } else {

  290.         if ((acmod & 1) && acmod != 1)

  291.             skip_bits(&gbc, 2); // cmixlev

  292.         if (acmod & 4)

  293.             skip_bits(&gbc, 2); // surmixlev

  294.     }

  295.     lfeon = get_bits1(&gbc);

  296. 

  297.     init_put_bits(&pbc, buf, sizeof(buf));

  298.     put_bits(&pbc, 2, fscod);

  299.     put_bits(&pbc, 5, bsid);

  300.     put_bits(&pbc, 3, bsmod);

  301.     put_bits(&pbc, 3, acmod);

  302.     put_bits(&pbc, 1, lfeon);

  303.     put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code

  304.     put_bits(&pbc, 5, 0); // reserved

  305. 

  306.     flush_put_bits(&pbc);

  307.     avio_write(pb, buf, sizeof(buf));

  308. 

  309.     return 11;

  310. }

  311. 

  312. struct eac3_info {

  313.     AVPacket pkt;

  314.     uint8_t ec3_done;

  315.     uint8_t num_blocks;

  316. 

  317.     /* Layout of the EC3SpecificBox */

  318.     /* maximum bitrate */

  319.     uint16_t data_rate;

  320.     /* number of independent substreams */

  321.     uint8_t  num_ind_sub;

  322.     struct {

  323.         /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */

  324.         uint8_t fscod;

  325.         /* bit stream identification 5 bits */

  326.         uint8_t bsid;

  327.         /* one bit reserved */

  328.         /* audio service mixing (not supported yet) 1 bit */

  329.         /* bit stream mode 3 bits */

  330.         uint8_t bsmod;

  331.         /* audio coding mode 3 bits */

  332.         uint8_t acmod;

  333.         /* sub woofer on 1 bit */

  334.         uint8_t lfeon;

  335.         /* 3 bits reserved */

  336.         /* number of dependent substreams associated with this substream 4 bits */

  337.         uint8_t num_dep_sub;

  338.         /* channel locations of the dependent substream(s), if any, 9 bits */

  339.         uint16_t chan_loc;

  340.         /* if there is no dependent substream, then one bit reserved instead */

  341.     } substream[1]; /* TODO: support 8 independent substreams */

  342. };

  343. 

  344. #if CONFIG_AC3_PARSER

  345. static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)

  346. {

  347.     GetBitContext gbc;

  348.     AC3HeaderInfo tmp, *hdr = &tmp;

  349.     struct eac3_info *info;

  350.     int num_blocks;

  351. 

  352.     if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))

  353.         return AVERROR(ENOMEM);

  354.     info = track->eac3_priv;

  355. 

  356.     init_get_bits(&gbc, pkt->data, pkt->size * 8);

  357.     if (avpriv_ac3_parse_header(&gbc, &hdr) < 0) {

  358.         /* drop the packets until we see a good one */

  359.         if (!track->entry) {

  360.             av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");

  361.             return 0;

  362.         }

  363.         return AVERROR_INVALIDDATA;

  364.     }

  365. 

  366.     info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);

  367.     num_blocks = hdr->num_blocks;

  368. 

  369.     if (!info->ec3_done) {

  370.         /* AC-3 substream must be the first one */

  371.         if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)

  372.             return AVERROR(EINVAL);

  373. 

  374.         /* this should always be the case, given that our AC-3 parser

  375.          * concatenates dependent frames to their independent parent */

  376.         if (hdr->frame_type == EAC3_FRAME_TYPE_INDEPENDENT) {

  377.             /* substream ids must be incremental */

  378.             if (hdr->substreamid > info->num_ind_sub + 1)

  379.                 return AVERROR(EINVAL);

  380. 

  381.             if (hdr->substreamid == info->num_ind_sub + 1) {

  382.                 //info->num_ind_sub++;

  383.                 avpriv_request_sample(track->par, "Multiple independent substreams");

  384.                 return AVERROR_PATCHWELCOME;

  385.             } else if (hdr->substreamid < info->num_ind_sub ||

  386.                        hdr->substreamid == 0 && info->substream[0].bsid) {

  387.                 info->ec3_done = 1;

  388.                 goto concatenate;

  389.             }

  390.         }

  391. 

  392.         /* fill the info needed for the "dec3" atom */

  393.         info->substream[hdr->substreamid].fscod = hdr->sr_code;

  394.         info->substream[hdr->substreamid].bsid  = hdr->bitstream_id;

  395.         info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;

  396.         info->substream[hdr->substreamid].acmod = hdr->channel_mode;

  397.         info->substream[hdr->substreamid].lfeon = hdr->lfe_on;

  398. 

  399.         /* Parse dependent substream(s), if any */

  400.         if (pkt->size != hdr->frame_size) {

  401.             int cumul_size = hdr->frame_size;

  402.             int parent = hdr->substreamid;

  403. 

  404.             while (cumul_size != pkt->size) {

  405.                 int i;

  406.                 init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);

  407.                 if (avpriv_ac3_parse_header(&gbc, &hdr) < 0)

  408.                     return AVERROR_INVALIDDATA;

  409.                 if (hdr->frame_type != EAC3_FRAME_TYPE_DEPENDENT)

  410.                     return AVERROR(EINVAL);

  411.                 cumul_size += hdr->frame_size;

  412.                 info->substream[parent].num_dep_sub++;

  413. 

  414.                 /* header is parsed up to lfeon, but custom channel map may be needed */

  415.                 /* skip bsid */

  416.                 skip_bits(&gbc, 5);

  417.                 /* skip volume control params */

  418.                 for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {

  419.                     skip_bits(&gbc, 5); // skip dialog normalization

  420.                     if (get_bits1(&gbc)) {

  421.                         skip_bits(&gbc, 8); // skip compression gain word

  422.                     }

  423.                 }

  424.                 /* get the dependent stream channel map, if exists */

  425.                 if (get_bits1(&gbc))

  426.                     info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;

  427.                 else

  428.                     info->substream[parent].chan_loc |= hdr->channel_mode;

  429.             }

  430.         }

  431.     }

  432. 

  433. concatenate:

  434.     if (!info->num_blocks && num_blocks == 6)

  435.         return pkt->size;

  436.     else if (info->num_blocks + num_blocks > 6)

  437.         return AVERROR_INVALIDDATA;

  438. 

  439.     if (!info->num_blocks) {

  440.         int ret;

  441.         if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)

  442.             return ret;

  443.         info->num_blocks = num_blocks;

  444.         return 0;

  445.     } else {

  446.         int ret;

  447.         if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)

  448.             return ret;

  449.         memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);

  450.         info->num_blocks += num_blocks;

  451.         info->pkt.duration += pkt->duration;

  452.         if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)

  453.             return ret;

  454.         if (info->num_blocks != 6)

  455.             return 0;

  456.         av_packet_unref(pkt);

  457.         if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)

  458.             return ret;

  459.         av_packet_unref(&info->pkt);

  460.         info->num_blocks = 0;

  461.     }

  462. 

  463.     return pkt->size;

  464. }

  465. #endif

  466. 

  467. static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)

  468. {

  469.     PutBitContext pbc;

  470.     uint8_t *buf;

  471.     struct eac3_info *info;

  472.     int size, i;

  473. 

  474.     if (!track->eac3_priv)

  475.         return AVERROR(EINVAL);

  476. 

  477.     info = track->eac3_priv;

  478.     size = 2 + 4 * (info->num_ind_sub + 1);

  479.     buf = av_malloc(size);

  480.     if (!buf) {

  481.         size = AVERROR(ENOMEM);

  482.         goto end;

  483.     }

  484. 

  485.     init_put_bits(&pbc, buf, size);

  486.     put_bits(&pbc, 13, info->data_rate);

  487.     put_bits(&pbc,  3, info->num_ind_sub);

  488.     for (i = 0; i <= info->num_ind_sub; i++) {

  489.         put_bits(&pbc, 2, info->substream[i].fscod);

  490.         put_bits(&pbc, 5, info->substream[i].bsid);

  491.         put_bits(&pbc, 1, 0); /* reserved */

  492.         put_bits(&pbc, 1, 0); /* asvc */

  493.         put_bits(&pbc, 3, info->substream[i].bsmod);

  494.         put_bits(&pbc, 3, info->substream[i].acmod);

  495.         put_bits(&pbc, 1, info->substream[i].lfeon);

  496.         put_bits(&pbc, 5, 0); /* reserved */

  497.         put_bits(&pbc, 4, info->substream[i].num_dep_sub);

  498.         if (!info->substream[i].num_dep_sub) {

  499.             put_bits(&pbc, 1, 0); /* reserved */

  500.             size--;

  501.         } else {

  502.             put_bits(&pbc, 9, info->substream[i].chan_loc);

  503.         }

  504.     }

  505.     flush_put_bits(&pbc);

  506. 

  507.     avio_wb32(pb, size + 8);

  508.     ffio_wfourcc(pb, "dec3");

  509.     avio_write(pb, buf, size);

  510. 

  511.     av_free(buf);

  512. 

  513. end:

  514.     av_packet_unref(&info->pkt);

  515.     av_freep(&track->eac3_priv);

  516. 

  517.     return size;

  518. }

  519. 

  520. /**

  521.  * This function writes extradata "as is".

  522.  * Extradata must be formatted like a valid atom (with size and tag).

  523.  */

  524. static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)

  525. {

  526.     avio_write(pb, track->par->extradata, track->par->extradata_size);

  527.     return track->par->extradata_size;

  528. }

  529. 

  530. static int mov_write_enda_tag(AVIOContext *pb)

  531. {

  532.     avio_wb32(pb, 10);

  533.     ffio_wfourcc(pb, "enda");

  534.     avio_wb16(pb, 1); /* little endian */

  535.     return 10;

  536. }

  537. 

  538. static int mov_write_enda_tag_be(AVIOContext *pb)

  539. {

  540.   avio_wb32(pb, 10);

  541.   ffio_wfourcc(pb, "enda");

  542.   avio_wb16(pb, 0); /* big endian */

  543.   return 10;

  544. }

  545. 

  546. static void put_descr(AVIOContext *pb, int tag, unsigned int size)

  547. {

  548.     int i = 3;

  549.     avio_w8(pb, tag);

  550.     for (; i > 0; i--)

  551.         avio_w8(pb, (size >> (7 * i)) | 0x80);

  552.     avio_w8(pb, size & 0x7F);

  553. }

  554. 

  555. static unsigned compute_avg_bitrate(MOVTrack *track)

  556. {

  557.     uint64_t size = 0;

  558.     int i;

  559.     if (!track->track_duration)

  560.         return 0;

  561.     for (i = 0; i < track->entry; i++)

  562.         size += track->cluster[i].size;

  563.     return size * 8 * track->timescale / track->track_duration;

  564. }

  565. 

  566. static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic

  567. {

  568.     AVCPBProperties *props;

  569.     int64_t pos = avio_tell(pb);

  570.     int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;

  571.     unsigned avg_bitrate;

  572. 

  573.     avio_wb32(pb, 0); // size

  574.     ffio_wfourcc(pb, "esds");

  575.     avio_wb32(pb, 0); // Version

  576. 

  577.     // ES descriptor

  578.     put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);

  579.     avio_wb16(pb, track->track_id);

  580.     avio_w8(pb, 0x00); // flags (= no flags)

  581. 

  582.     // DecoderConfig descriptor

  583.     put_descr(pb, 0x04, 13 + decoder_specific_info_len);

  584. 

  585.     // Object type indication

  586.     if ((track->par->codec_id == AV_CODEC_ID_MP2 ||

  587.          track->par->codec_id == AV_CODEC_ID_MP3) &&

  588.         track->par->sample_rate > 24000)

  589.         avio_w8(pb, 0x6B); // 11172-3

  590.     else

  591.         avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->par->codec_id));

  592. 

  593.     // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)

  594.     // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)

  595.     if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)

  596.         avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)

  597.     else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)

  598.         avio_w8(pb, 0x15); // flags (= Audiostream)

  599.     else

  600.         avio_w8(pb, 0x11); // flags (= Visualstream)

  601. 

  602.     props = (AVCPBProperties*)av_stream_get_side_data(track->st, AV_PKT_DATA_CPB_PROPERTIES,

  603.                                                       NULL);

  604. 

  605.     avio_wb24(pb, props ? props->buffer_size / 8 : 0); // Buffersize DB

  606. 

  607.     avg_bitrate = compute_avg_bitrate(track);

  608.     avio_wb32(pb, props ? FFMAX3(props->max_bitrate, props->avg_bitrate, avg_bitrate) : FFMAX(track->par->bit_rate, avg_bitrate)); // maxbitrate (FIXME should be max rate in any 1 sec window)

  609.     avio_wb32(pb, avg_bitrate);

  610. 

  611.     if (track->vos_len) {

  612.         // DecoderSpecific info descriptor

  613.         put_descr(pb, 0x05, track->vos_len);

  614.         avio_write(pb, track->vos_data, track->vos_len);

  615.     }

  616. 

  617.     // SL descriptor

  618.     put_descr(pb, 0x06, 1);

  619.     avio_w8(pb, 0x02);

  620.     return update_size(pb, pos);

  621. }

  622. 

  623. static int mov_pcm_le_gt16(enum AVCodecID codec_id)

  624. {

  625.     return codec_id == AV_CODEC_ID_PCM_S24LE ||

  626.            codec_id == AV_CODEC_ID_PCM_S32LE ||

  627.            codec_id == AV_CODEC_ID_PCM_F32LE ||

  628.            codec_id == AV_CODEC_ID_PCM_F64LE;

  629. }

  630. 

  631. static int mov_pcm_be_gt16(enum AVCodecID codec_id)

  632. {

  633.     return codec_id == AV_CODEC_ID_PCM_S24BE ||

  634.            codec_id == AV_CODEC_ID_PCM_S32BE ||

  635.            codec_id == AV_CODEC_ID_PCM_F32BE ||

  636.            codec_id == AV_CODEC_ID_PCM_F64BE;

  637. }

  638. 

  639. static int mov_write_ms_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  640. {

  641.     int ret;

  642.     int64_t pos = avio_tell(pb);

  643.     avio_wb32(pb, 0);

  644.     avio_wl32(pb, track->tag); // store it byteswapped

  645.     track->par->codec_tag = av_bswap16(track->tag >> 16);

  646.     if ((ret = ff_put_wav_header(s, pb, track->par, 0)) < 0)

  647.         return ret;

  648.     return update_size(pb, pos);

  649. }

  650. 

  651. static int mov_write_wfex_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  652. {

  653.     int ret;

  654.     int64_t pos = avio_tell(pb);

  655.     avio_wb32(pb, 0);

  656.     ffio_wfourcc(pb, "wfex");

  657.     if ((ret = ff_put_wav_header(s, pb, track->st->codecpar, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)

  658.         return ret;

  659.     return update_size(pb, pos);

  660. }

  661. 

  662. static int mov_write_dfla_tag(AVIOContext *pb, MOVTrack *track)

  663. {

  664.     int64_t pos = avio_tell(pb);

  665.     avio_wb32(pb, 0);

  666.     ffio_wfourcc(pb, "dfLa");

  667.     avio_w8(pb, 0); /* version */

  668.     avio_wb24(pb, 0); /* flags */

  669. 

  670.     /* Expect the encoder to pass a METADATA_BLOCK_TYPE_STREAMINFO. */

  671.     if (track->par->extradata_size != FLAC_STREAMINFO_SIZE)

  672.         return AVERROR_INVALIDDATA;

  673. 

  674.     /* TODO: Write other METADATA_BLOCK_TYPEs if the encoder makes them available. */

  675.     avio_w8(pb, 1 << 7 | FLAC_METADATA_TYPE_STREAMINFO); /* LastMetadataBlockFlag << 7 | BlockType */

  676.     avio_wb24(pb, track->par->extradata_size); /* Length */

  677.     avio_write(pb, track->par->extradata, track->par->extradata_size); /* BlockData[Length] */

  678. 

  679.     return update_size(pb, pos);

  680. }

  681. 

  682. static int mov_write_dops_tag(AVIOContext *pb, MOVTrack *track)

  683. {

  684.     int64_t pos = avio_tell(pb);

  685.     avio_wb32(pb, 0);

  686.     ffio_wfourcc(pb, "dOps");

  687.     avio_w8(pb, 0); /* Version */

  688.     if (track->par->extradata_size < 19) {

  689.         av_log(pb, AV_LOG_ERROR, "invalid extradata size\n");

  690.         return AVERROR_INVALIDDATA;

  691.     }

  692.     /* extradata contains an Ogg OpusHead, other than byte-ordering and

  693.        OpusHead's preceeding magic/version, OpusSpecificBox is currently

  694.        identical. */

  695.     avio_w8(pb, AV_RB8(track->par->extradata + 9)); /* OuputChannelCount */

  696.     avio_wb16(pb, AV_RL16(track->par->extradata + 10)); /* PreSkip */

  697.     avio_wb32(pb, AV_RL32(track->par->extradata + 12)); /* InputSampleRate */

  698.     avio_wb16(pb, AV_RL16(track->par->extradata + 16)); /* OutputGain */

  699.     /* Write the rest of the header out without byte-swapping. */

  700.     avio_write(pb, track->par->extradata + 18, track->par->extradata_size - 18);

  701. 

  702.     return update_size(pb, pos);

  703. }

  704. 

  705. static int mov_write_chan_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  706. {

  707.     uint32_t layout_tag, bitmap;

  708.     int64_t pos = avio_tell(pb);

  709. 

  710.     layout_tag = ff_mov_get_channel_layout_tag(track->par->codec_id,

  711.                                                track->par->channel_layout,

  712.                                                &bitmap);

  713.     if (!layout_tag) {

  714.         av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "

  715.                "lack of channel information\n");

  716.         return 0;

  717.     }

  718. 

  719.     if (track->multichannel_as_mono)

  720.         return 0;

  721. 

  722.     avio_wb32(pb, 0);           // Size

  723.     ffio_wfourcc(pb, "chan");   // Type

  724.     avio_w8(pb, 0);             // Version

  725.     avio_wb24(pb, 0);           // Flags

  726.     avio_wb32(pb, layout_tag);  // mChannelLayoutTag

  727.     avio_wb32(pb, bitmap);      // mChannelBitmap

  728.     avio_wb32(pb, 0);           // mNumberChannelDescriptions

  729. 

  730.     return update_size(pb, pos);

  731. }

  732. 

  733. static int mov_write_wave_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  734. {

  735.     int64_t pos = avio_tell(pb);

  736. 

  737.     avio_wb32(pb, 0);     /* size */

  738.     ffio_wfourcc(pb, "wave");

  739. 

  740.     if (track->par->codec_id != AV_CODEC_ID_QDM2) {

  741.     avio_wb32(pb, 12);    /* size */

  742.     ffio_wfourcc(pb, "frma");

  743.     avio_wl32(pb, track->tag);

  744.     }

  745. 

  746.     if (track->par->codec_id == AV_CODEC_ID_AAC) {

  747.         /* useless atom needed by mplayer, ipod, not needed by quicktime */

  748.         avio_wb32(pb, 12); /* size */

  749.         ffio_wfourcc(pb, "mp4a");

  750.         avio_wb32(pb, 0);

  751.         mov_write_esds_tag(pb, track);

  752.     } else if (mov_pcm_le_gt16(track->par->codec_id))  {

  753.       mov_write_enda_tag(pb);

  754.     } else if (mov_pcm_be_gt16(track->par->codec_id))  {

  755.       mov_write_enda_tag_be(pb);

  756.     } else if (track->par->codec_id == AV_CODEC_ID_AMR_NB) {

  757.         mov_write_amr_tag(pb, track);

  758.     } else if (track->par->codec_id == AV_CODEC_ID_AC3) {

  759.         mov_write_ac3_tag(pb, track);

  760.     } else if (track->par->codec_id == AV_CODEC_ID_EAC3) {

  761.         mov_write_eac3_tag(pb, track);

  762.     } else if (track->par->codec_id == AV_CODEC_ID_ALAC ||

  763.                track->par->codec_id == AV_CODEC_ID_QDM2) {

  764.         mov_write_extradata_tag(pb, track);

  765.     } else if (track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||

  766.                track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {

  767.         mov_write_ms_tag(s, pb, track);

  768.     }

  769. 

  770.     avio_wb32(pb, 8);     /* size */

  771.     avio_wb32(pb, 0);     /* null tag */

  772. 

  773.     return update_size(pb, pos);

  774. }

  775. 

  776. static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)

  777. {

  778.     uint8_t *unescaped;

  779.     const uint8_t *start, *next, *end = track->vos_data + track->vos_len;

  780.     int unescaped_size, seq_found = 0;

  781.     int level = 0, interlace = 0;

  782.     int packet_seq   = track->vc1_info.packet_seq;

  783.     int packet_entry = track->vc1_info.packet_entry;

  784.     int slices       = track->vc1_info.slices;

  785.     PutBitContext pbc;

  786. 

  787.     if (track->start_dts == AV_NOPTS_VALUE) {

  788.         /* No packets written yet, vc1_info isn't authoritative yet. */

  789.         /* Assume inline sequence and entry headers. */

  790.         packet_seq = packet_entry = 1;

  791.         av_log(NULL, AV_LOG_WARNING,

  792.                "moov atom written before any packets, unable to write correct "

  793.                "dvc1 atom. Set the delay_moov flag to fix this.\n");

  794.     }

  795. 

  796.     unescaped = av_mallocz(track->vos_len + AV_INPUT_BUFFER_PADDING_SIZE);

  797.     if (!unescaped)

  798.         return AVERROR(ENOMEM);

  799.     start = find_next_marker(track->vos_data, end);

  800.     for (next = start; next < end; start = next) {

  801.         GetBitContext gb;

  802.         int size;

  803.         next = find_next_marker(start + 4, end);

  804.         size = next - start - 4;

  805.         if (size <= 0)

  806.             continue;

  807.         unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);

  808.         init_get_bits(&gb, unescaped, 8 * unescaped_size);

  809.         if (AV_RB32(start) == VC1_CODE_SEQHDR) {

  810.             int profile = get_bits(&gb, 2);

  811.             if (profile != PROFILE_ADVANCED) {

  812.                 av_free(unescaped);

  813.                 return AVERROR(ENOSYS);

  814.             }

  815.             seq_found = 1;

  816.             level = get_bits(&gb, 3);

  817.             /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,

  818.              * width, height */

  819.             skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);

  820.             skip_bits(&gb, 1); /* broadcast */

  821.             interlace = get_bits1(&gb);

  822.             skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */

  823.         }

  824.     }

  825.     if (!seq_found) {

  826.         av_free(unescaped);

  827.         return AVERROR(ENOSYS);

  828.     }

  829. 

  830.     init_put_bits(&pbc, buf, 7);

  831.     /* VC1DecSpecStruc */

  832.     put_bits(&pbc, 4, 12); /* profile - advanced */

  833.     put_bits(&pbc, 3, level);

  834.     put_bits(&pbc, 1, 0); /* reserved */

  835.     /* VC1AdvDecSpecStruc */

  836.     put_bits(&pbc, 3, level);

  837.     put_bits(&pbc, 1, 0); /* cbr */

  838.     put_bits(&pbc, 6, 0); /* reserved */

  839.     put_bits(&pbc, 1, !interlace); /* no interlace */

  840.     put_bits(&pbc, 1, !packet_seq); /* no multiple seq */

  841.     put_bits(&pbc, 1, !packet_entry); /* no multiple entry */

  842.     put_bits(&pbc, 1, !slices); /* no slice code */

  843.     put_bits(&pbc, 1, 0); /* no bframe */

  844.     put_bits(&pbc, 1, 0); /* reserved */

  845. 

  846.     /* framerate */

  847.     if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)

  848.         put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);

  849.     else

  850.         put_bits32(&pbc, 0xffffffff);

  851. 

  852.     flush_put_bits(&pbc);

  853. 

  854.     av_free(unescaped);

  855. 

  856.     return 0;

  857. }

  858. 

  859. static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)

  860. {

  861.     uint8_t buf[7] = { 0 };

  862.     int ret;

  863. 

  864.     if ((ret = mov_write_dvc1_structs(track, buf)) < 0)

  865.         return ret;

  866. 

  867.     avio_wb32(pb, track->vos_len + 8 + sizeof(buf));

  868.     ffio_wfourcc(pb, "dvc1");

  869.     avio_write(pb, buf, sizeof(buf));

  870.     avio_write(pb, track->vos_data, track->vos_len);

  871. 

  872.     return 0;

  873. }

  874. 

  875. static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)

  876. {

  877.     avio_wb32(pb, track->vos_len + 8);

  878.     ffio_wfourcc(pb, "glbl");

  879.     avio_write(pb, track->vos_data, track->vos_len);

  880.     return 8 + track->vos_len;

  881. }

  882. 

  883. /**

  884.  * Compute flags for 'lpcm' tag.

  885.  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.

  886.  */

  887. static int mov_get_lpcm_flags(enum AVCodecID codec_id)

  888. {

  889.     switch (codec_id) {

  890.     case AV_CODEC_ID_PCM_F32BE:

  891.     case AV_CODEC_ID_PCM_F64BE:

  892.         return 11;

  893.     case AV_CODEC_ID_PCM_F32LE:

  894.     case AV_CODEC_ID_PCM_F64LE:

  895.         return 9;

  896.     case AV_CODEC_ID_PCM_U8:

  897.         return 10;

  898.     case AV_CODEC_ID_PCM_S16BE:

  899.     case AV_CODEC_ID_PCM_S24BE:

  900.     case AV_CODEC_ID_PCM_S32BE:

  901.         return 14;

  902.     case AV_CODEC_ID_PCM_S8:

  903.     case AV_CODEC_ID_PCM_S16LE:

  904.     case AV_CODEC_ID_PCM_S24LE:

  905.     case AV_CODEC_ID_PCM_S32LE:

  906.         return 12;

  907.     default:

  908.         return 0;

  909.     }

  910. }

  911. 

  912. static int get_cluster_duration(MOVTrack *track, int cluster_idx)

  913. {

  914.     int64_t next_dts;

  915. 

  916.     if (cluster_idx >= track->entry)

  917.         return 0;

  918. 

  919.     if (cluster_idx + 1 == track->entry)

  920.         next_dts = track->track_duration + track->start_dts;

  921.     else

  922.         next_dts = track->cluster[cluster_idx + 1].dts;

  923. 

  924.     next_dts -= track->cluster[cluster_idx].dts;

  925. 

  926.     av_assert0(next_dts >= 0);

  927.     av_assert0(next_dts <= INT_MAX);

  928. 

  929.     return next_dts;

  930. }

  931. 

  932. static int get_samples_per_packet(MOVTrack *track)

  933. {

  934.     int i, first_duration;

  935. 

  936. // return track->par->frame_size;

  937. 

  938.     /* use 1 for raw PCM */

  939.     if (!track->audio_vbr)

  940.         return 1;

  941. 

  942.     /* check to see if duration is constant for all clusters */

  943.     if (!track->entry)

  944.         return 0;

  945.     first_duration = get_cluster_duration(track, 0);

  946.     for (i = 1; i < track->entry; i++) {

  947.         if (get_cluster_duration(track, i) != first_duration)

  948.             return 0;

  949.     }

  950.     return first_duration;

  951. }

  952. 

  953. static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

  954. {

  955.     int64_t pos = avio_tell(pb);

  956.     int version = 0;

  957.     uint32_t tag = track->tag;

  958. 

  959.     if (track->mode == MODE_MOV) {

  960.         if (track->timescale > UINT16_MAX) {

  961.             if (mov_get_lpcm_flags(track->par->codec_id))

  962.                 tag = AV_RL32("lpcm");

  963.             version = 2;

  964.         } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||

  965.                    mov_pcm_be_gt16(track->par->codec_id) ||

  966.                    track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||

  967.                    track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||

  968.                    track->par->codec_id == AV_CODEC_ID_QDM2) {

  969.             version = 1;

  970.         }

  971.     }

  972. 

  973.     avio_wb32(pb, 0); /* size */

  974.     if (mov->encryption_scheme != MOV_ENC_NONE) {

  975.         ffio_wfourcc(pb, "enca");

  976.     } else {

  977.         avio_wl32(pb, tag); // store it byteswapped

  978.     }

  979.     avio_wb32(pb, 0); /* Reserved */

  980.     avio_wb16(pb, 0); /* Reserved */

  981.     avio_wb16(pb, 1); /* Data-reference index, XXX  == 1 */

  982. 

  983.     /* SoundDescription */

  984.     avio_wb16(pb, version); /* Version */

  985.     avio_wb16(pb, 0); /* Revision level */

  986.     avio_wb32(pb, 0); /* Reserved */

  987. 

  988.     if (version == 2) {

  989.         avio_wb16(pb, 3);

  990.         avio_wb16(pb, 16);

  991.         avio_wb16(pb, 0xfffe);

  992.         avio_wb16(pb, 0);

  993.         avio_wb32(pb, 0x00010000);

  994.         avio_wb32(pb, 72);

  995.         avio_wb64(pb, av_double2int(track->par->sample_rate));

  996.         avio_wb32(pb, track->par->channels);

  997.         avio_wb32(pb, 0x7F000000);

  998.         avio_wb32(pb, av_get_bits_per_sample(track->par->codec_id));

  999.         avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));

  1000.         avio_wb32(pb, track->sample_size);

  1001.         avio_wb32(pb, get_samples_per_packet(track));

  1002.     } else {

  1003.         if (track->mode == MODE_MOV) {

  1004.             avio_wb16(pb, track->par->channels);

  1005.             if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||

  1006.                 track->par->codec_id == AV_CODEC_ID_PCM_S8)

  1007.                 avio_wb16(pb, 8); /* bits per sample */

  1008.             else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)

  1009.                 avio_wb16(pb, track->par->bits_per_coded_sample);

  1010.             else

  1011.                 avio_wb16(pb, 16);

  1012.             avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */

  1013.         } else { /* reserved for mp4/3gp */

  1014.             if (track->par->codec_id == AV_CODEC_ID_FLAC ||

  1015.                 track->par->codec_id == AV_CODEC_ID_OPUS) {

  1016.                 avio_wb16(pb, track->par->channels);

  1017.             } else {

  1018.                 avio_wb16(pb, 2);

  1019.             }

  1020.             if (track->par->codec_id == AV_CODEC_ID_FLAC) {

  1021.                 avio_wb16(pb, track->par->bits_per_raw_sample);

  1022.             } else {

  1023.                 avio_wb16(pb, 16);

  1024.             }

  1025.             avio_wb16(pb, 0);

  1026.         }

  1027. 

  1028.         avio_wb16(pb, 0); /* packet size (= 0) */

  1029.         if (track->par->codec_id == AV_CODEC_ID_OPUS)

  1030.             avio_wb16(pb, 48000);

  1031.         else

  1032.             avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?

  1033.                           track->par->sample_rate : 0);

  1034.         avio_wb16(pb, 0); /* Reserved */

  1035.     }

  1036. 

  1037.     if (version == 1) { /* SoundDescription V1 extended info */

  1038.         if (mov_pcm_le_gt16(track->par->codec_id) ||

  1039.             mov_pcm_be_gt16(track->par->codec_id))

  1040.             avio_wb32(pb, 1); /*  must be 1 for  uncompressed formats */

  1041.         else

  1042.             avio_wb32(pb, track->par->frame_size); /* Samples per packet */

  1043.         avio_wb32(pb, track->sample_size / track->par->channels); /* Bytes per packet */

  1044.         avio_wb32(pb, track->sample_size); /* Bytes per frame */

  1045.         avio_wb32(pb, 2); /* Bytes per sample */

  1046.     }

  1047. 

  1048.     if (track->mode == MODE_MOV &&

  1049.         (track->par->codec_id == AV_CODEC_ID_AAC           ||

  1050.          track->par->codec_id == AV_CODEC_ID_AC3           ||

  1051.          track->par->codec_id == AV_CODEC_ID_EAC3          ||

  1052.          track->par->codec_id == AV_CODEC_ID_AMR_NB        ||

  1053.          track->par->codec_id == AV_CODEC_ID_ALAC          ||

  1054.          track->par->codec_id == AV_CODEC_ID_ADPCM_MS      ||

  1055.          track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||

  1056.          track->par->codec_id == AV_CODEC_ID_QDM2          ||

  1057.          (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||

  1058.          (mov_pcm_be_gt16(track->par->codec_id) && version==1)))

  1059.         mov_write_wave_tag(s, pb, track);

  1060.     else if (track->tag == MKTAG('m','p','4','a'))

  1061.         mov_write_esds_tag(pb, track);

  1062.     else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)

  1063.         mov_write_amr_tag(pb, track);

  1064.     else if (track->par->codec_id == AV_CODEC_ID_AC3)

  1065.         mov_write_ac3_tag(pb, track);

  1066.     else if (track->par->codec_id == AV_CODEC_ID_EAC3)

  1067.         mov_write_eac3_tag(pb, track);

  1068.     else if (track->par->codec_id == AV_CODEC_ID_ALAC)

  1069.         mov_write_extradata_tag(pb, track);

  1070.     else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)

  1071.         mov_write_wfex_tag(s, pb, track);

  1072.     else if (track->par->codec_id == AV_CODEC_ID_FLAC)

  1073.         mov_write_dfla_tag(pb, track);

  1074.     else if (track->par->codec_id == AV_CODEC_ID_OPUS)

  1075.         mov_write_dops_tag(pb, track);

  1076.     else if (track->vos_len > 0)

  1077.         mov_write_glbl_tag(pb, track);

  1078. 

  1079.     if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO)

  1080.         mov_write_chan_tag(s, pb, track);

  1081. 

  1082.     if (mov->encryption_scheme != MOV_ENC_NONE) {

  1083.         ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);

  1084.     }

  1085. 

  1086.     return update_size(pb, pos);

  1087. }

  1088. 

  1089. static int mov_write_d263_tag(AVIOContext *pb)

  1090. {

  1091.     avio_wb32(pb, 0xf); /* size */

  1092.     ffio_wfourcc(pb, "d263");

  1093.     ffio_wfourcc(pb, "FFMP");

  1094.     avio_w8(pb, 0); /* decoder version */

  1095.     /* FIXME use AVCodecContext level/profile, when encoder will set values */

  1096.     avio_w8(pb, 0xa); /* level */

  1097.     avio_w8(pb, 0); /* profile */

  1098.     return 0xf;

  1099. }

  1100. 

  1101. static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)

  1102. {

  1103.     int64_t pos = avio_tell(pb);

  1104. 

  1105.     avio_wb32(pb, 0);

  1106.     ffio_wfourcc(pb, "avcC");

  1107.     ff_isom_write_avcc(pb, track->vos_data, track->vos_len);

  1108.     return update_size(pb, pos);

  1109. }

  1110. 

  1111. static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  1112. {

  1113.     int64_t pos = avio_tell(pb);

  1114. 

  1115.     avio_wb32(pb, 0);

  1116.     ffio_wfourcc(pb, "vpcC");

  1117.     avio_w8(pb, 1); /* version */

  1118.     avio_wb24(pb, 0); /* flags */

  1119.     ff_isom_write_vpcc(s, pb, track->par);

  1120.     return update_size(pb, pos);

  1121. }

  1122. 

  1123. static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)

  1124. {

  1125.     int64_t pos = avio_tell(pb);

  1126. 

  1127.     avio_wb32(pb, 0);

  1128.     ffio_wfourcc(pb, "hvcC");

  1129.     if (track->tag == MKTAG('h','v','c','1'))

  1130.         ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1);

  1131.     else

  1132.         ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);

  1133.     return update_size(pb, pos);

  1134. }

  1135. 

  1136. /* also used by all avid codecs (dv, imx, meridien) and their variants */

  1137. static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)

  1138. {

  1139.     int i;

  1140.     int interlaced;

  1141.     int cid;

  1142.     int display_width = track->par->width;

  1143. 

  1144.     if (track->vos_data && track->vos_len > 0x29) {

  1145.         if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {

  1146.             /* looks like a DNxHD bit stream */

  1147.             interlaced = (track->vos_data[5] & 2);

  1148.             cid = AV_RB32(track->vos_data + 0x28);

  1149.         } else {

  1150.             av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");

  1151.             return 0;

  1152.         }

  1153.     } else {

  1154.         av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");

  1155.         return 0;

  1156.     }

  1157. 

  1158.     avio_wb32(pb, 24); /* size */

  1159.     ffio_wfourcc(pb, "ACLR");

  1160.     ffio_wfourcc(pb, "ACLR");

  1161.     ffio_wfourcc(pb, "0001");

  1162.     if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */

  1163.         track->par->color_range == AVCOL_RANGE_UNSPECIFIED) {

  1164.         avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */

  1165.     } else { /* Full range (0-255) */

  1166.         avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */

  1167.     }

  1168.     avio_wb32(pb, 0); /* unknown */

  1169. 

  1170.     if (track->tag == MKTAG('A','V','d','h')) {

  1171.         avio_wb32(pb, 32);

  1172.         ffio_wfourcc(pb, "ADHR");

  1173.         ffio_wfourcc(pb, "0001");

  1174.         avio_wb32(pb, cid);

  1175.         avio_wb32(pb, 0); /* unknown */

  1176.         avio_wb32(pb, 1); /* unknown */

  1177.         avio_wb32(pb, 0); /* unknown */

  1178.         avio_wb32(pb, 0); /* unknown */

  1179.         return 0;

  1180.     }

  1181. 

  1182.     avio_wb32(pb, 24); /* size */

  1183.     ffio_wfourcc(pb, "APRG");

  1184.     ffio_wfourcc(pb, "APRG");

  1185.     ffio_wfourcc(pb, "0001");

  1186.     avio_wb32(pb, 1); /* unknown */

  1187.     avio_wb32(pb, 0); /* unknown */

  1188. 

  1189.     avio_wb32(pb, 120); /* size */

  1190.     ffio_wfourcc(pb, "ARES");

  1191.     ffio_wfourcc(pb, "ARES");

  1192.     ffio_wfourcc(pb, "0001");

  1193.     avio_wb32(pb, cid); /* dnxhd cid, some id ? */

  1194.     if (   track->par->sample_aspect_ratio.num > 0

  1195.         && track->par->sample_aspect_ratio.den > 0)

  1196.         display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;

  1197.     avio_wb32(pb, display_width);

  1198.     /* values below are based on samples created with quicktime and avid codecs */

  1199.     if (interlaced) {

  1200.         avio_wb32(pb, track->par->height / 2);

  1201.         avio_wb32(pb, 2); /* unknown */

  1202.         avio_wb32(pb, 0); /* unknown */

  1203.         avio_wb32(pb, 4); /* unknown */

  1204.     } else {

  1205.         avio_wb32(pb, track->par->height);

  1206.         avio_wb32(pb, 1); /* unknown */

  1207.         avio_wb32(pb, 0); /* unknown */

  1208.         if (track->par->height == 1080)

  1209.             avio_wb32(pb, 5); /* unknown */

  1210.         else

  1211.             avio_wb32(pb, 6); /* unknown */

  1212.     }

  1213.     /* padding */

  1214.     for (i = 0; i < 10; i++)

  1215.         avio_wb64(pb, 0);

  1216. 

  1217.     return 0;

  1218. }

  1219. 

  1220. static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)

  1221. {

  1222.     avio_wb32(pb, 12);

  1223.     ffio_wfourcc(pb, "DpxE");

  1224.     if (track->par->extradata_size >= 12 &&

  1225.         !memcmp(&track->par->extradata[4], "DpxE", 4)) {

  1226.         avio_wb32(pb, track->par->extradata[11]);

  1227.     } else {

  1228.         avio_wb32(pb, 1);

  1229.     }

  1230.     return 0;

  1231. }

  1232. 

  1233. static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)

  1234. {

  1235.     int tag;

  1236. 

  1237.     if (track->par->width == 720) { /* SD */

  1238.         if (track->par->height == 480) { /* NTSC */

  1239.             if  (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');

  1240.             else                                            tag = MKTAG('d','v','c',' ');

  1241.        }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');

  1242.         else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');

  1243.         else                                                tag = MKTAG('d','v','p','p');

  1244.     } else if (track->par->height == 720) { /* HD 720 line */

  1245.         if  (track->st->time_base.den == 50)                tag = MKTAG('d','v','h','q');

  1246.         else                                                tag = MKTAG('d','v','h','p');

  1247.     } else if (track->par->height == 1080) { /* HD 1080 line */

  1248.         if  (track->st->time_base.den == 25)                tag = MKTAG('d','v','h','5');

  1249.         else                                                tag = MKTAG('d','v','h','6');

  1250.     } else {

  1251.         av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");

  1252.         return 0;

  1253.     }

  1254. 

  1255.     return tag;

  1256. }

  1257. 

  1258. static AVRational find_fps(AVFormatContext *s, AVStream *st)

  1259. {

  1260.     AVRational rate = st->avg_frame_rate;

  1261. 

  1262. #if FF_API_LAVF_AVCTX

  1263.     FF_DISABLE_DEPRECATION_WARNINGS

  1264.     rate = av_inv_q(st->codec->time_base);

  1265.     if (av_timecode_check_frame_rate(rate) < 0) {

  1266.         av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",

  1267.                rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);

  1268.         rate = st->avg_frame_rate;

  1269.     }

  1270.     FF_ENABLE_DEPRECATION_WARNINGS

  1271. #endif

  1272. 

  1273.     return rate;

  1274. }

  1275. 

  1276. static int defined_frame_rate(AVFormatContext *s, AVStream *st)

  1277. {

  1278.     AVRational rational_framerate = find_fps(s, st);

  1279.     int rate = 0;

  1280.     if (rational_framerate.den != 0)

  1281.         rate = av_q2d(rational_framerate);

  1282.     return rate;

  1283. }

  1284. 

  1285. static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)

  1286. {

  1287.     int tag = track->par->codec_tag;

  1288.     int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;

  1289.     AVStream *st = track->st;

  1290.     int rate = defined_frame_rate(s, st);

  1291. 

  1292.     if (!tag)

  1293.         tag = MKTAG('m', '2', 'v', '1'); //fallback tag

  1294. 

  1295.     if (track->par->format == AV_PIX_FMT_YUV420P) {

  1296.         if (track->par->width == 1280 && track->par->height == 720) {

  1297.             if (!interlaced) {

  1298.                 if      (rate == 24) tag = MKTAG('x','d','v','4');

  1299.                 else if (rate == 25) tag = MKTAG('x','d','v','5');

  1300.                 else if (rate == 30) tag = MKTAG('x','d','v','1');

  1301.                 else if (rate == 50) tag = MKTAG('x','d','v','a');

  1302.                 else if (rate == 60) tag = MKTAG('x','d','v','9');

  1303.             }

  1304.         } else if (track->par->width == 1440 && track->par->height == 1080) {

  1305.             if (!interlaced) {

  1306.                 if      (rate == 24) tag = MKTAG('x','d','v','6');

  1307.                 else if (rate == 25) tag = MKTAG('x','d','v','7');

  1308.                 else if (rate == 30) tag = MKTAG('x','d','v','8');

  1309.             } else {

  1310.                 if      (rate == 25) tag = MKTAG('x','d','v','3');

  1311.                 else if (rate == 30) tag = MKTAG('x','d','v','2');

  1312.             }

  1313.         } else if (track->par->width == 1920 && track->par->height == 1080) {

  1314.             if (!interlaced) {

  1315.                 if      (rate == 24) tag = MKTAG('x','d','v','d');

  1316.                 else if (rate == 25) tag = MKTAG('x','d','v','e');

  1317.                 else if (rate == 30) tag = MKTAG('x','d','v','f');

  1318.             } else {

  1319.                 if      (rate == 25) tag = MKTAG('x','d','v','c');

  1320.                 else if (rate == 30) tag = MKTAG('x','d','v','b');

  1321.             }

  1322.         }

  1323.     } else if (track->par->format == AV_PIX_FMT_YUV422P) {

  1324.         if (track->par->width == 1280 && track->par->height == 720) {

  1325.             if (!interlaced) {

  1326.                 if      (rate == 24) tag = MKTAG('x','d','5','4');

  1327.                 else if (rate == 25) tag = MKTAG('x','d','5','5');

  1328.                 else if (rate == 30) tag = MKTAG('x','d','5','1');

  1329.                 else if (rate == 50) tag = MKTAG('x','d','5','a');

  1330.                 else if (rate == 60) tag = MKTAG('x','d','5','9');

  1331.             }

  1332.         } else if (track->par->width == 1920 && track->par->height == 1080) {

  1333.             if (!interlaced) {

  1334.                 if      (rate == 24) tag = MKTAG('x','d','5','d');

  1335.                 else if (rate == 25) tag = MKTAG('x','d','5','e');

  1336.                 else if (rate == 30) tag = MKTAG('x','d','5','f');

  1337.             } else {

  1338.                 if      (rate == 25) tag = MKTAG('x','d','5','c');

  1339.                 else if (rate == 30) tag = MKTAG('x','d','5','b');

  1340.             }

  1341.         }

  1342.     }

  1343. 

  1344.     return tag;

  1345. }

  1346. 

  1347. static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)

  1348. {

  1349.     int tag = track->par->codec_tag;

  1350.     int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;

  1351.     AVStream *st = track->st;

  1352.     int rate = defined_frame_rate(s, st);

  1353. 

  1354.     if (!tag)

  1355.         tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag

  1356. 

  1357.     if (track->par->format == AV_PIX_FMT_YUV420P10) {

  1358.         if (track->par->width == 960 && track->par->height == 720) {

  1359.             if (!interlaced) {

  1360.                 if      (rate == 24) tag = MKTAG('a','i','5','p');

  1361.                 else if (rate == 25) tag = MKTAG('a','i','5','q');

  1362.                 else if (rate == 30) tag = MKTAG('a','i','5','p');

  1363.                 else if (rate == 50) tag = MKTAG('a','i','5','q');

  1364.                 else if (rate == 60) tag = MKTAG('a','i','5','p');

  1365.             }

  1366.         } else if (track->par->width == 1440 && track->par->height == 1080) {

  1367.             if (!interlaced) {

  1368.                 if      (rate == 24) tag = MKTAG('a','i','5','3');

  1369.                 else if (rate == 25) tag = MKTAG('a','i','5','2');

  1370.                 else if (rate == 30) tag = MKTAG('a','i','5','3');

  1371.             } else {

  1372.                 if      (rate == 50) tag = MKTAG('a','i','5','5');

  1373.                 else if (rate == 60) tag = MKTAG('a','i','5','6');

  1374.             }

  1375.         }

  1376.     } else if (track->par->format == AV_PIX_FMT_YUV422P10) {

  1377.         if (track->par->width == 1280 && track->par->height == 720) {

  1378.             if (!interlaced) {

  1379.                 if      (rate == 24) tag = MKTAG('a','i','1','p');

  1380.                 else if (rate == 25) tag = MKTAG('a','i','1','q');

  1381.                 else if (rate == 30) tag = MKTAG('a','i','1','p');

  1382.                 else if (rate == 50) tag = MKTAG('a','i','1','q');

  1383.                 else if (rate == 60) tag = MKTAG('a','i','1','p');

  1384.             }

  1385.         } else if (track->par->width == 1920 && track->par->height == 1080) {

  1386.             if (!interlaced) {

  1387.                 if      (rate == 24) tag = MKTAG('a','i','1','3');

  1388.                 else if (rate == 25) tag = MKTAG('a','i','1','2');

  1389.                 else if (rate == 30) tag = MKTAG('a','i','1','3');

  1390.             } else {

  1391.                 if      (rate == 25) tag = MKTAG('a','i','1','5');

  1392.                 else if (rate == 50) tag = MKTAG('a','i','1','5');

  1393.                 else if (rate == 60) tag = MKTAG('a','i','1','6');

  1394.             }

  1395.         } else if (   track->par->width == 4096 && track->par->height == 2160

  1396.                    || track->par->width == 3840 && track->par->height == 2160

  1397.                    || track->par->width == 2048 && track->par->height == 1080) {

  1398.             tag = MKTAG('a','i','v','x');

  1399.         }

  1400.     }

  1401. 

  1402.     return tag;

  1403. }

  1404. 

  1405. static const struct {

  1406.     enum AVPixelFormat pix_fmt;

  1407.     uint32_t tag;

  1408.     unsigned bps;

  1409. } mov_pix_fmt_tags[] = {

  1410.     { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'),  0 },

  1411.     { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'),  0 },

  1412.     { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'),  0 },

  1413.     { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },

  1414.     { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },

  1415.     { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },

  1416.     { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },

  1417.     { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },

  1418.     { AV_PIX_FMT_RGB24,   MKTAG('r','a','w',' '), 24 },

  1419.     { AV_PIX_FMT_BGR24,   MKTAG('2','4','B','G'), 24 },

  1420.     { AV_PIX_FMT_ARGB,    MKTAG('r','a','w',' '), 32 },

  1421.     { AV_PIX_FMT_BGRA,    MKTAG('B','G','R','A'), 32 },

  1422.     { AV_PIX_FMT_RGBA,    MKTAG('R','G','B','A'), 32 },

  1423.     { AV_PIX_FMT_ABGR,    MKTAG('A','B','G','R'), 32 },

  1424.     { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },

  1425. };

  1426. 

  1427. static int mov_get_dnxhd_codec_tag(AVFormatContext *s, MOVTrack *track)

  1428. {

  1429.   int tag = MKTAG('A','V','d','n');

  1430.   if (track->par->profile != FF_PROFILE_UNKNOWN &&

  1431.       track->par->profile != FF_PROFILE_DNXHD)

  1432.       tag = MKTAG('A','V','d','h');

  1433.   return tag;

  1434. }

  1435. 

  1436. static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)

  1437. {

  1438.     int tag = track->par->codec_tag;

  1439.     int i;

  1440.     enum AVPixelFormat pix_fmt;

  1441. 

  1442.     for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {

  1443.         if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {

  1444.             tag = mov_pix_fmt_tags[i].tag;

  1445.             track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;

  1446.             if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)

  1447.                 break;

  1448.         }

  1449.     }

  1450. 

  1451.     pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_mov,

  1452.                                   track->par->bits_per_coded_sample);

  1453.     if (tag == MKTAG('r','a','w',' ') &&

  1454.         track->par->format != pix_fmt &&

  1455.         track->par->format != AV_PIX_FMT_GRAY8 &&

  1456.         track->par->format != AV_PIX_FMT_NONE)

  1457.         av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",

  1458.                av_get_pix_fmt_name(track->par->format));

  1459.     return tag;

  1460. }

  1461. 

  1462. static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)

  1463. {

  1464.     int tag = track->par->codec_tag;

  1465. 

  1466.     if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&

  1467.                  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||

  1468.                   track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||

  1469.                   track->par->codec_id == AV_CODEC_ID_H263 ||

  1470.                   track->par->codec_id == AV_CODEC_ID_H264 ||

  1471.                   track->par->codec_id == AV_CODEC_ID_DNXHD ||

  1472.                   track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||

  1473.                   av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio

  1474.         if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)

  1475.             tag = mov_get_dv_codec_tag(s, track);

  1476.         else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)

  1477.             tag = mov_get_rawvideo_codec_tag(s, track);

  1478.         else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)

  1479.             tag = mov_get_mpeg2_xdcam_codec_tag(s, track);

  1480.         else if (track->par->codec_id == AV_CODEC_ID_H264)

  1481.             tag = mov_get_h264_codec_tag(s, track);

  1482.         else if (track->par->codec_id == AV_CODEC_ID_DNXHD)

  1483.             tag = mov_get_dnxhd_codec_tag(s, track);

  1484.         else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  1485.             tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->par->codec_id);

  1486.             if (!tag) { // if no mac fcc found, try with Microsoft tags

  1487.                 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->par->codec_id);

  1488.                 if (tag)

  1489.                     av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "

  1490.                            "the file may be unplayable!\n");

  1491.             }

  1492.         } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {

  1493.             tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->par->codec_id);

  1494.             if (!tag) { // if no mac fcc found, try with Microsoft tags

  1495.                 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);

  1496.                 if (ms_tag) {

  1497.                     tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));

  1498.                     av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "

  1499.                            "the file may be unplayable!\n");

  1500.                 }

  1501.             }

  1502.         } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)

  1503.             tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->par->codec_id);

  1504.     }

  1505. 

  1506.     return tag;

  1507. }

  1508. 

  1509. static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)

  1510. {

  1511.     int tag;

  1512. 

  1513.     if (track->mode == MODE_MP4 || track->mode == MODE_PSP)

  1514.         tag = track->par->codec_tag;

  1515.     else if (track->mode == MODE_ISM)

  1516.         tag = track->par->codec_tag;

  1517.     else if (track->mode == MODE_IPOD) {

  1518.         if (!av_match_ext(s->filename, "m4a") &&

  1519.             !av_match_ext(s->filename, "m4v") &&

  1520.             !av_match_ext(s->filename, "m4b"))

  1521.             av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "

  1522.                    "Quicktime/Ipod might not play the file\n");

  1523.         tag = track->par->codec_tag;

  1524.     } else if (track->mode & MODE_3GP)

  1525.         tag = track->par->codec_tag;

  1526.     else if (track->mode == MODE_F4V)

  1527.         tag = track->par->codec_tag;

  1528.     else

  1529.         tag = mov_get_codec_tag(s, track);

  1530. 

  1531.     return tag;

  1532. }

  1533. 

  1534. /** Write uuid atom.

  1535.  * Needed to make file play in iPods running newest firmware

  1536.  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1

  1537.  */

  1538. static int mov_write_uuid_tag_ipod(AVIOContext *pb)

  1539. {

  1540.     avio_wb32(pb, 28);

  1541.     ffio_wfourcc(pb, "uuid");

  1542.     avio_wb32(pb, 0x6b6840f2);

  1543.     avio_wb32(pb, 0x5f244fc5);

  1544.     avio_wb32(pb, 0xba39a51b);

  1545.     avio_wb32(pb, 0xcf0323f3);

  1546.     avio_wb32(pb, 0x0);

  1547.     return 28;

  1548. }

  1549. 

  1550. static const uint16_t fiel_data[] = {

  1551.     0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e

  1552. };

  1553. 

  1554. static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)

  1555. {

  1556.     unsigned mov_field_order = 0;

  1557.     if (field_order < FF_ARRAY_ELEMS(fiel_data))

  1558.         mov_field_order = fiel_data[field_order];

  1559.     else

  1560.         return 0;

  1561.     avio_wb32(pb, 10);

  1562.     ffio_wfourcc(pb, "fiel");

  1563.     avio_wb16(pb, mov_field_order);

  1564.     return 10;

  1565. }

  1566. 

  1567. static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)

  1568. {

  1569.     int64_t pos = avio_tell(pb);

  1570.     avio_wb32(pb, 0);    /* size */

  1571.     avio_wl32(pb, track->tag); // store it byteswapped

  1572.     avio_wb32(pb, 0);    /* Reserved */

  1573.     avio_wb16(pb, 0);    /* Reserved */

  1574.     avio_wb16(pb, 1);    /* Data-reference index */

  1575. 

  1576.     if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)

  1577.         mov_write_esds_tag(pb, track);

  1578.     else if (track->par->extradata_size)

  1579.         avio_write(pb, track->par->extradata, track->par->extradata_size);

  1580. 

  1581.     return update_size(pb, pos);

  1582. }

  1583. 

  1584. static int mov_write_st3d_tag(AVIOContext *pb, AVStereo3D *stereo_3d)

  1585. {

  1586.     int8_t stereo_mode;

  1587. 

  1588.     if (stereo_3d->flags != 0) {

  1589.         av_log(pb, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);

  1590.         return 0;

  1591.     }

  1592. 

  1593.     switch (stereo_3d->type) {

  1594.     case AV_STEREO3D_2D:

  1595.         stereo_mode = 0;

  1596.         break;

  1597.     case AV_STEREO3D_TOPBOTTOM:

  1598.         stereo_mode = 1;

  1599.         break;

  1600.     case AV_STEREO3D_SIDEBYSIDE:

  1601.         stereo_mode = 2;

  1602.         break;

  1603.     default:

  1604.         av_log(pb, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));

  1605.         return 0;

  1606.     }

  1607.     avio_wb32(pb, 13); /* size */

  1608.     ffio_wfourcc(pb, "st3d");

  1609.     avio_wb32(pb, 0); /* version = 0 & flags = 0 */

  1610.     avio_w8(pb, stereo_mode);

  1611.     return 13;

  1612. }

  1613. 

  1614. static int mov_write_sv3d_tag(AVFormatContext *s, AVIOContext *pb, AVSphericalMapping *spherical_mapping)

  1615. {

  1616.     int64_t sv3d_pos, svhd_pos, proj_pos;

  1617.     const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;

  1618. 

  1619.     if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&

  1620.         spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&

  1621.         spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {

  1622.         av_log(pb, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);

  1623.         return 0;

  1624.     }

  1625. 

  1626.     sv3d_pos = avio_tell(pb);

  1627.     avio_wb32(pb, 0);  /* size */

  1628.     ffio_wfourcc(pb, "sv3d");

  1629. 

  1630.     svhd_pos = avio_tell(pb);

  1631.     avio_wb32(pb, 0);  /* size */

  1632.     ffio_wfourcc(pb, "svhd");

  1633.     avio_wb32(pb, 0); /* version = 0 & flags = 0 */

  1634.     avio_put_str(pb, metadata_source);

  1635.     update_size(pb, svhd_pos);

  1636. 

  1637.     proj_pos = avio_tell(pb);

  1638.     avio_wb32(pb, 0); /* size */

  1639.     ffio_wfourcc(pb, "proj");

  1640. 

  1641.     avio_wb32(pb, 24); /* size */

  1642.     ffio_wfourcc(pb, "prhd");

  1643.     avio_wb32(pb, 0); /* version = 0 & flags = 0 */

  1644.     avio_wb32(pb, spherical_mapping->yaw);

  1645.     avio_wb32(pb, spherical_mapping->pitch);

  1646.     avio_wb32(pb, spherical_mapping->roll);

  1647. 

  1648.     switch (spherical_mapping->projection) {

  1649.     case AV_SPHERICAL_EQUIRECTANGULAR:

  1650.     case AV_SPHERICAL_EQUIRECTANGULAR_TILE:

  1651.         avio_wb32(pb, 28);    /* size */

  1652.         ffio_wfourcc(pb, "equi");

  1653.         avio_wb32(pb, 0); /* version = 0 & flags = 0 */

  1654.         avio_wb32(pb, spherical_mapping->bound_top);

  1655.         avio_wb32(pb, spherical_mapping->bound_bottom);

  1656.         avio_wb32(pb, spherical_mapping->bound_left);

  1657.         avio_wb32(pb, spherical_mapping->bound_right);

  1658.         break;

  1659.     case AV_SPHERICAL_CUBEMAP:

  1660.         avio_wb32(pb, 20);    /* size */

  1661.         ffio_wfourcc(pb, "cbmp");

  1662.         avio_wb32(pb, 0); /* version = 0 & flags = 0 */

  1663.         avio_wb32(pb, 0); /* layout */

  1664.         avio_wb32(pb, spherical_mapping->padding); /* padding */

  1665.         break;

  1666.     }

  1667.     update_size(pb, proj_pos);

  1668. 

  1669.     return update_size(pb, sv3d_pos);

  1670. }

  1671. 

  1672. static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)

  1673. {

  1674.     AVRational sar;

  1675.     av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,

  1676.               track->par->sample_aspect_ratio.den, INT_MAX);

  1677. 

  1678.     avio_wb32(pb, 16);

  1679.     ffio_wfourcc(pb, "pasp");

  1680.     avio_wb32(pb, sar.num);

  1681.     avio_wb32(pb, sar.den);

  1682.     return 16;

  1683. }

  1684. 

  1685. static int mov_write_gama_tag(AVIOContext *pb, MOVTrack *track, double gamma)

  1686. {

  1687.     uint32_t gama = 0;

  1688.     if (gamma <= 0.0)

  1689.     {

  1690.         gamma = avpriv_get_gamma_from_trc(track->par->color_trc);

  1691.     }

  1692.     av_log(pb, AV_LOG_DEBUG, "gamma value %g\n", gamma);

  1693. 

  1694.     if (gamma > 1e-6) {

  1695.         gama = (uint32_t)lrint((double)(1<<16) * gamma);

  1696.         av_log(pb, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);

  1697. 

  1698.         av_assert0(track->mode == MODE_MOV);

  1699.         avio_wb32(pb, 12);

  1700.         ffio_wfourcc(pb, "gama");

  1701.         avio_wb32(pb, gama);

  1702.         return 12;

  1703.     }

  1704.     else {

  1705.         av_log(pb, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");

  1706.     }

  1707.     return 0;

  1708. }

  1709. 

  1710. static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track)

  1711. {

  1712.     // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9

  1713.     // Ref (MP4): ISO/IEC 14496-12:2012

  1714. 

  1715.     if (track->par->color_primaries == AVCOL_PRI_UNSPECIFIED &&

  1716.         track->par->color_trc == AVCOL_TRC_UNSPECIFIED &&

  1717.         track->par->color_space == AVCOL_SPC_UNSPECIFIED) {

  1718.         if ((track->par->width >= 1920 && track->par->height >= 1080)

  1719.           || (track->par->width == 1280 && track->par->height == 720)) {

  1720.             av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt709\n");

  1721.             track->par->color_primaries = AVCOL_PRI_BT709;

  1722.         } else if (track->par->width == 720 && track->height == 576) {

  1723.             av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt470bg\n");

  1724.             track->par->color_primaries = AVCOL_PRI_BT470BG;

  1725.         } else if (track->par->width == 720 &&

  1726.                    (track->height == 486 || track->height == 480)) {

  1727.             av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming smpte170\n");

  1728.             track->par->color_primaries = AVCOL_PRI_SMPTE170M;

  1729.         } else {

  1730.             av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, unable to assume anything\n");

  1731.         }

  1732.         switch (track->par->color_primaries) {

  1733.         case AVCOL_PRI_BT709:

  1734.             track->par->color_trc = AVCOL_TRC_BT709;

  1735.             track->par->color_space = AVCOL_SPC_BT709;

  1736.             break;

  1737.         case AVCOL_PRI_SMPTE170M:

  1738.         case AVCOL_PRI_BT470BG:

  1739.             track->par->color_trc = AVCOL_TRC_BT709;

  1740.             track->par->color_space = AVCOL_SPC_SMPTE170M;

  1741.             break;

  1742.         }

  1743.     }

  1744. 

  1745.     /* We should only ever be called by MOV or MP4. */

  1746.     av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4);

  1747. 

  1748.     avio_wb32(pb, 18 + (track->mode == MODE_MP4));

  1749.     ffio_wfourcc(pb, "colr");

  1750.     if (track->mode == MODE_MP4)

  1751.         ffio_wfourcc(pb, "nclx");

  1752.     else

  1753.         ffio_wfourcc(pb, "nclc");

  1754.     switch (track->par->color_primaries) {

  1755.     case AVCOL_PRI_BT709:     avio_wb16(pb, 1); break;

  1756.     case AVCOL_PRI_SMPTE170M:

  1757.     case AVCOL_PRI_SMPTE240M: avio_wb16(pb, 6); break;

  1758.     case AVCOL_PRI_BT470BG:   avio_wb16(pb, 5); break;

  1759.     default:                  avio_wb16(pb, 2);

  1760.     }

  1761.     switch (track->par->color_trc) {

  1762.     case AVCOL_TRC_BT709:     avio_wb16(pb, 1); break;

  1763.     case AVCOL_TRC_SMPTE170M: avio_wb16(pb, 1); break; // remapped

  1764.     case AVCOL_TRC_SMPTE240M: avio_wb16(pb, 7); break;

  1765.     default:                  avio_wb16(pb, 2);

  1766.     }

  1767.     switch (track->par->color_space) {

  1768.     case AVCOL_SPC_BT709:     avio_wb16(pb, 1); break;

  1769.     case AVCOL_SPC_BT470BG:

  1770.     case AVCOL_SPC_SMPTE170M: avio_wb16(pb, 6); break;

  1771.     case AVCOL_SPC_SMPTE240M: avio_wb16(pb, 7); break;

  1772.     default:                  avio_wb16(pb, 2);

  1773.     }

  1774. 

  1775.     if (track->mode == MODE_MP4) {

  1776.         int full_range = track->par->color_range == AVCOL_RANGE_JPEG;

  1777.         avio_w8(pb, full_range << 7);

  1778.         return 19;

  1779.     } else {

  1780.         return 18;

  1781.     }

  1782. }

  1783. 

  1784. static void find_compressor(char * compressor_name, int len, MOVTrack *track)

  1785. {

  1786.     AVDictionaryEntry *encoder;

  1787.     int xdcam_res =  (track->par->width == 1280 && track->par->height == 720)

  1788.                   || (track->par->width == 1440 && track->par->height == 1080)

  1789.                   || (track->par->width == 1920 && track->par->height == 1080);

  1790. 

  1791.     if (track->mode == MODE_MOV &&

  1792.         (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {

  1793.         av_strlcpy(compressor_name, encoder->value, 32);

  1794.     } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {

  1795.         int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;

  1796.         AVStream *st = track->st;

  1797.         int rate = defined_frame_rate(NULL, st);

  1798.         av_strlcatf(compressor_name, len, "XDCAM");

  1799.         if (track->par->format == AV_PIX_FMT_YUV422P) {

  1800.             av_strlcatf(compressor_name, len, " HD422");

  1801.         } else if(track->par->width == 1440) {

  1802.             av_strlcatf(compressor_name, len, " HD");

  1803.         } else

  1804.             av_strlcatf(compressor_name, len, " EX");

  1805. 

  1806.         av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');

  1807. 

  1808.         av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));

  1809.     }

  1810. }

  1811. 

  1812. static int mov_write_video_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

  1813. {

  1814.     int64_t pos = avio_tell(pb);

  1815.     char compressor_name[32] = { 0 };

  1816.     int avid = 0;

  1817. 

  1818.     avio_wb32(pb, 0); /* size */

  1819.     if (mov->encryption_scheme != MOV_ENC_NONE) {

  1820.         ffio_wfourcc(pb, "encv");

  1821.     } else {

  1822.         avio_wl32(pb, track->tag); // store it byteswapped

  1823.     }

  1824.     avio_wb32(pb, 0); /* Reserved */

  1825.     avio_wb16(pb, 0); /* Reserved */

  1826.     avio_wb16(pb, 1); /* Data-reference index */

  1827. 

  1828.     avio_wb16(pb, 0); /* Codec stream version */

  1829.     avio_wb16(pb, 0); /* Codec stream revision (=0) */

  1830.     if (track->mode == MODE_MOV) {

  1831.         ffio_wfourcc(pb, "FFMP"); /* Vendor */

  1832.         if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO) {

  1833.             avio_wb32(pb, 0); /* Temporal Quality */

  1834.             avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/

  1835.         } else {

  1836.             avio_wb32(pb, 0x200); /* Temporal Quality = normal */

  1837.             avio_wb32(pb, 0x200); /* Spatial Quality = normal */

  1838.         }

  1839.     } else {

  1840.         avio_wb32(pb, 0); /* Reserved */

  1841.         avio_wb32(pb, 0); /* Reserved */

  1842.         avio_wb32(pb, 0); /* Reserved */

  1843.     }

  1844.     avio_wb16(pb, track->par->width); /* Video width */

  1845.     avio_wb16(pb, track->height); /* Video height */

  1846.     avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */

  1847.     avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */

  1848.     avio_wb32(pb, 0); /* Data size (= 0) */

  1849.     avio_wb16(pb, 1); /* Frame count (= 1) */

  1850. 

  1851.     /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */

  1852.     find_compressor(compressor_name, 32, track);

  1853.     avio_w8(pb, strlen(compressor_name));

  1854.     avio_write(pb, compressor_name, 31);

  1855. 

  1856.     if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)

  1857.         avio_wb16(pb, track->par->bits_per_coded_sample |

  1858.                   (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));

  1859.     else

  1860.         avio_wb16(pb, 0x18); /* Reserved */

  1861. 

  1862.     if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {

  1863.         int pal_size = 1 << track->par->bits_per_coded_sample;

  1864.         int i;

  1865.         avio_wb16(pb, 0);             /* Color table ID */

  1866.         avio_wb32(pb, 0);             /* Color table seed */

  1867.         avio_wb16(pb, 0x8000);        /* Color table flags */

  1868.         avio_wb16(pb, pal_size - 1);  /* Color table size (zero-relative) */

  1869.         for (i = 0; i < pal_size; i++) {

  1870.             uint32_t rgb = track->palette[i];

  1871.             uint16_t r = (rgb >> 16) & 0xff;

  1872.             uint16_t g = (rgb >> 8)  & 0xff;

  1873.             uint16_t b = rgb         & 0xff;

  1874.             avio_wb16(pb, 0);

  1875.             avio_wb16(pb, (r << 8) | r);

  1876.             avio_wb16(pb, (g << 8) | g);

  1877.             avio_wb16(pb, (b << 8) | b);

  1878.         }

  1879.     } else

  1880.         avio_wb16(pb, 0xffff); /* Reserved */

  1881. 

  1882.     if (track->tag == MKTAG('m','p','4','v'))

  1883.         mov_write_esds_tag(pb, track);

  1884.     else if (track->par->codec_id == AV_CODEC_ID_H263)

  1885.         mov_write_d263_tag(pb);

  1886.     else if (track->par->codec_id == AV_CODEC_ID_AVUI ||

  1887.             track->par->codec_id == AV_CODEC_ID_SVQ3) {

  1888.         mov_write_extradata_tag(pb, track);

  1889.         avio_wb32(pb, 0);

  1890.     } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {

  1891.         mov_write_avid_tag(pb, track);

  1892.         avid = 1;

  1893.     } else if (track->par->codec_id == AV_CODEC_ID_HEVC)

  1894.         mov_write_hvcc_tag(pb, track);

  1895.     else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {

  1896.         mov_write_avcc_tag(pb, track);

  1897.         if (track->mode == MODE_IPOD)

  1898.             mov_write_uuid_tag_ipod(pb);

  1899.     } else if (track->par->codec_id == AV_CODEC_ID_VP9) {

  1900.         mov_write_vpcc_tag(mov->fc, pb, track);

  1901.     } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)

  1902.         mov_write_dvc1_tag(pb, track);

  1903.     else if (track->par->codec_id == AV_CODEC_ID_VP6F ||

  1904.              track->par->codec_id == AV_CODEC_ID_VP6A) {

  1905.         /* Don't write any potential extradata here - the cropping

  1906.          * is signalled via the normal width/height fields. */

  1907.     } else if (track->par->codec_id == AV_CODEC_ID_R10K) {

  1908.         if (track->par->codec_tag == MKTAG('R','1','0','k'))

  1909.             mov_write_dpxe_tag(pb, track);

  1910.     } else if (track->vos_len > 0)

  1911.         mov_write_glbl_tag(pb, track);

  1912. 

  1913.     if (track->par->codec_id != AV_CODEC_ID_H264 &&

  1914.         track->par->codec_id != AV_CODEC_ID_MPEG4 &&

  1915.         track->par->codec_id != AV_CODEC_ID_DNXHD) {

  1916.         int field_order = track->par->field_order;

  1917. 

  1918. #if FF_API_LAVF_AVCTX

  1919.     FF_DISABLE_DEPRECATION_WARNINGS

  1920.     if (field_order != track->st->codec->field_order && track->st->codec->field_order != AV_FIELD_UNKNOWN)

  1921.         field_order = track->st->codec->field_order;

  1922.     FF_ENABLE_DEPRECATION_WARNINGS

  1923. #endif

  1924. 

  1925.         if (field_order != AV_FIELD_UNKNOWN)

  1926.             mov_write_fiel_tag(pb, track, field_order);

  1927.     }

  1928. 

  1929.     if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {

  1930.         if (track->mode == MODE_MOV)

  1931.             mov_write_gama_tag(pb, track, mov->gamma);

  1932.         else

  1933.             av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");

  1934.     }

  1935.     if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {

  1936.         if (track->mode == MODE_MOV || track->mode == MODE_MP4)

  1937.             mov_write_colr_tag(pb, track);

  1938.         else

  1939.             av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4.\n");

  1940.     }

  1941. 

  1942.     if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {

  1943.         AVStereo3D* stereo_3d = (AVStereo3D*) av_stream_get_side_data(track->st, AV_PKT_DATA_STEREO3D, NULL);

  1944.         AVSphericalMapping* spherical_mapping = (AVSphericalMapping*)av_stream_get_side_data(track->st, AV_PKT_DATA_SPHERICAL, NULL);

  1945. 

  1946.         if (stereo_3d)

  1947.             mov_write_st3d_tag(pb, stereo_3d);

  1948.         if (spherical_mapping)

  1949.             mov_write_sv3d_tag(mov->fc, pb, spherical_mapping);

  1950.     }

  1951. 

  1952.     if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {

  1953.         mov_write_pasp_tag(pb, track);

  1954.     }

  1955. 

  1956.     if (mov->encryption_scheme != MOV_ENC_NONE) {

  1957.         ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);

  1958.     }

  1959. 

  1960.     /* extra padding for avid stsd */

  1961.     /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */

  1962.     if (avid)

  1963.         avio_wb32(pb, 0);

  1964. 

  1965.     return update_size(pb, pos);

  1966. }

  1967. 

  1968. static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)

  1969. {

  1970.     int64_t pos = avio_tell(pb);

  1971.     avio_wb32(pb, 0); /* size */

  1972.     ffio_wfourcc(pb, "rtp ");

  1973.     avio_wb32(pb, 0); /* Reserved */

  1974.     avio_wb16(pb, 0); /* Reserved */

  1975.     avio_wb16(pb, 1); /* Data-reference index */

  1976. 

  1977.     avio_wb16(pb, 1); /* Hint track version */

  1978.     avio_wb16(pb, 1); /* Highest compatible version */

  1979.     avio_wb32(pb, track->max_packet_size); /* Max packet size */

  1980. 

  1981.     avio_wb32(pb, 12); /* size */

  1982.     ffio_wfourcc(pb, "tims");

  1983.     avio_wb32(pb, track->timescale);

  1984. 

  1985.     return update_size(pb, pos);

  1986. }

  1987. 

  1988. static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)

  1989. {

  1990.     uint64_t str_size =strlen(reel_name);

  1991.     int64_t pos = avio_tell(pb);

  1992. 

  1993.     if (str_size >= UINT16_MAX){

  1994.         av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);

  1995.         avio_wb16(pb, 0);

  1996.         return AVERROR(EINVAL);

  1997.     }

  1998. 

  1999.     avio_wb32(pb, 0);                              /* size */

  2000.     ffio_wfourcc(pb, "name");                      /* Data format */

  2001.     avio_wb16(pb, str_size);                       /* string size */

  2002.     avio_wb16(pb, track->language);                /* langcode */

  2003.     avio_write(pb, reel_name, str_size);           /* reel name */

  2004.     return update_size(pb,pos);

  2005. }

  2006. 

  2007. static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)

  2008. {

  2009.     int64_t pos = avio_tell(pb);

  2010. #if 1

  2011.     int frame_duration;

  2012.     int nb_frames;

  2013.     AVDictionaryEntry *t = NULL;

  2014. 

  2015.     if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {

  2016. #if FF_API_LAVF_AVCTX

  2017.     FF_DISABLE_DEPRECATION_WARNINGS

  2018.         frame_duration = av_rescale(track->timescale, track->st->codec->time_base.num, track->st->codec->time_base.den);

  2019.         nb_frames      = ROUNDED_DIV(track->st->codec->time_base.den, track->st->codec->time_base.num);

  2020.     FF_ENABLE_DEPRECATION_WARNINGS

  2021. #else

  2022.         av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");

  2023.         return AVERROR(EINVAL);

  2024. #endif

  2025.     } else {

  2026.         frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);

  2027.         nb_frames      = ROUNDED_DIV(track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);

  2028.     }

  2029. 

  2030.     if (nb_frames > 255) {

  2031.         av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);

  2032.         return AVERROR(EINVAL);

  2033.     }

  2034. 

  2035.     avio_wb32(pb, 0); /* size */

  2036.     ffio_wfourcc(pb, "tmcd");               /* Data format */

  2037.     avio_wb32(pb, 0);                       /* Reserved */

  2038.     avio_wb32(pb, 1);                       /* Data reference index */

  2039.     avio_wb32(pb, 0);                       /* Flags */

  2040.     avio_wb32(pb, track->timecode_flags);   /* Flags (timecode) */

  2041.     avio_wb32(pb, track->timescale);        /* Timescale */

  2042.     avio_wb32(pb, frame_duration);          /* Frame duration */

  2043.     avio_w8(pb, nb_frames);                 /* Number of frames */

  2044.     avio_w8(pb, 0);                         /* Reserved */

  2045. 

  2046.     t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);

  2047.     if (t && utf8len(t->value) && track->mode != MODE_MP4)

  2048.         mov_write_source_reference_tag(pb, track, t->value);

  2049.     else

  2050.         avio_wb16(pb, 0); /* zero size */

  2051. #else

  2052. 

  2053.     avio_wb32(pb, 0); /* size */

  2054.     ffio_wfourcc(pb, "tmcd");               /* Data format */

  2055.     avio_wb32(pb, 0);                       /* Reserved */

  2056.     avio_wb32(pb, 1);                       /* Data reference index */

  2057.     if (track->par->extradata_size)

  2058.         avio_write(pb, track->par->extradata, track->par->extradata_size);

  2059. #endif

  2060.     return update_size(pb, pos);

  2061. }

  2062. 

  2063. static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)

  2064. {

  2065.     int64_t pos = avio_tell(pb);

  2066.     avio_wb32(pb, 0); /* size */

  2067.     ffio_wfourcc(pb, "gpmd");

  2068.     avio_wb32(pb, 0); /* Reserved */

  2069.     avio_wb16(pb, 0); /* Reserved */

  2070.     avio_wb16(pb, 1); /* Data-reference index */

  2071.     avio_wb32(pb, 0); /* Reserved */

  2072.     return update_size(pb, pos);

  2073. }

  2074. 

  2075. static int mov_write_stsd_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

  2076. {

  2077.     int64_t pos = avio_tell(pb);

  2078.     avio_wb32(pb, 0); /* size */

  2079.     ffio_wfourcc(pb, "stsd");

  2080.     avio_wb32(pb, 0); /* version & flags */

  2081.     avio_wb32(pb, 1); /* entry count */

  2082.     if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)

  2083.         mov_write_video_tag(pb, mov, track);

  2084.     else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)

  2085.         mov_write_audio_tag(s, pb, mov, track);

  2086.     else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)

  2087.         mov_write_subtitle_tag(pb, track);

  2088.     else if (track->par->codec_tag == MKTAG('r','t','p',' '))

  2089.         mov_write_rtp_tag(pb, track);

  2090.     else if (track->par->codec_tag == MKTAG('t','m','c','d'))

  2091.         mov_write_tmcd_tag(pb, track);

  2092.     else if (track->par->codec_tag == MKTAG('g','p','m','d'))

  2093.         mov_write_gpmd_tag(pb, track);

  2094.     return update_size(pb, pos);

  2095. }

  2096. 

  2097. static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)

  2098. {

  2099.     MOVStts *ctts_entries;

  2100.     uint32_t entries = 0;

  2101.     uint32_t atom_size;

  2102.     int i;

  2103. 

  2104.     ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */

  2105.     if (!ctts_entries)

  2106.         return AVERROR(ENOMEM);

  2107.     ctts_entries[0].count = 1;

  2108.     ctts_entries[0].duration = track->cluster[0].cts;

  2109.     for (i = 1; i < track->entry; i++) {

  2110.         if (track->cluster[i].cts == ctts_entries[entries].duration) {

  2111.             ctts_entries[entries].count++; /* compress */

  2112.         } else {

  2113.             entries++;

  2114.             ctts_entries[entries].duration = track->cluster[i].cts;

  2115.             ctts_entries[entries].count = 1;

  2116.         }

  2117.     }

  2118.     entries++; /* last one */

  2119.     atom_size = 16 + (entries * 8);

  2120.     avio_wb32(pb, atom_size); /* size */

  2121.     ffio_wfourcc(pb, "ctts");

  2122.     avio_wb32(pb, 0); /* version & flags */

  2123.     avio_wb32(pb, entries); /* entry count */

  2124.     for (i = 0; i < entries; i++) {

  2125.         avio_wb32(pb, ctts_entries[i].count);

  2126.         avio_wb32(pb, ctts_entries[i].duration);

  2127.     }

  2128.     av_free(ctts_entries);

  2129.     return atom_size;

  2130. }

  2131. 

  2132. /* Time to sample atom */

  2133. static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)

  2134. {

  2135.     MOVStts *stts_entries = NULL;

  2136.     uint32_t entries = -1;

  2137.     uint32_t atom_size;

  2138.     int i;

  2139. 

  2140.     if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {

  2141.         stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */

  2142.         if (!stts_entries)

  2143.             return AVERROR(ENOMEM);

  2144.         stts_entries[0].count = track->sample_count;

  2145.         stts_entries[0].duration = 1;

  2146.         entries = 1;

  2147.     } else {

  2148.         if (track->entry) {

  2149.             stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */

  2150.             if (!stts_entries)

  2151.                 return AVERROR(ENOMEM);

  2152.         }

  2153.         for (i = 0; i < track->entry; i++) {

  2154.             int duration = get_cluster_duration(track, i);

  2155.             if (i && duration == stts_entries[entries].duration) {

  2156.                 stts_entries[entries].count++; /* compress */

  2157.             } else {

  2158.                 entries++;

  2159.                 stts_entries[entries].duration = duration;

  2160.                 stts_entries[entries].count = 1;

  2161.             }

  2162.         }

  2163.         entries++; /* last one */

  2164.     }

  2165.     atom_size = 16 + (entries * 8);

  2166.     avio_wb32(pb, atom_size); /* size */

  2167.     ffio_wfourcc(pb, "stts");

  2168.     avio_wb32(pb, 0); /* version & flags */

  2169.     avio_wb32(pb, entries); /* entry count */

  2170.     for (i = 0; i < entries; i++) {

  2171.         avio_wb32(pb, stts_entries[i].count);

  2172.         avio_wb32(pb, stts_entries[i].duration);

  2173.     }

  2174.     av_free(stts_entries);

  2175.     return atom_size;

  2176. }

  2177. 

  2178. static int mov_write_dref_tag(AVIOContext *pb)

  2179. {

  2180.     avio_wb32(pb, 28); /* size */

  2181.     ffio_wfourcc(pb, "dref");

  2182.     avio_wb32(pb, 0); /* version & flags */

  2183.     avio_wb32(pb, 1); /* entry count */

  2184. 

  2185.     avio_wb32(pb, 0xc); /* size */

  2186.     //FIXME add the alis and rsrc atom

  2187.     ffio_wfourcc(pb, "url ");

  2188.     avio_wb32(pb, 1); /* version & flags */

  2189. 

  2190.     return 28;

  2191. }

  2192. 

  2193. static int mov_preroll_write_stbl_atoms(AVIOContext *pb, MOVTrack *track)

  2194. {

  2195.     struct sgpd_entry {

  2196.         int count;

  2197.         int16_t roll_distance;

  2198.         int group_description_index;

  2199.     };

  2200. 

  2201.     struct sgpd_entry *sgpd_entries = NULL;

  2202.     int entries = -1;

  2203.     int group = 0;

  2204.     int i, j;

  2205. 

  2206.     const int OPUS_SEEK_PREROLL_MS = 80;

  2207.     int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,

  2208.                                     (AVRational){1, 1000},

  2209.                                     (AVRational){1, 48000});

  2210. 

  2211.     if (!track->entry)

  2212.         return 0;

  2213. 

  2214.     sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));

  2215.     if (!sgpd_entries)

  2216.         return AVERROR(ENOMEM);

  2217. 

  2218.     av_assert0(track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC);

  2219. 

  2220.     if (track->par->codec_id == AV_CODEC_ID_OPUS) {

  2221.     for (i = 0; i < track->entry; i++) {

  2222.         int roll_samples_remaining = roll_samples;

  2223.         int distance = 0;

  2224.         for (j = i - 1; j >= 0; j--) {

  2225.             roll_samples_remaining -= get_cluster_duration(track, j);

  2226.             distance++;

  2227.             if (roll_samples_remaining <= 0)

  2228.                 break;

  2229.         }

  2230.         /* We don't have enough preceeding samples to compute a valid

  2231.            roll_distance here, so this sample can't be independently

  2232.            decoded. */

  2233.         if (roll_samples_remaining > 0)

  2234.             distance = 0;

  2235.         /* Verify distance is a minimum of 2 (60ms) packets and a maximum of

  2236.            32 (2.5ms) packets. */

  2237.         av_assert0(distance == 0 || (distance >= 2 && distance <= 32));

  2238.         if (i && distance == sgpd_entries[entries].roll_distance) {

  2239.             sgpd_entries[entries].count++;

  2240.         } else {

  2241.             entries++;

  2242.             sgpd_entries[entries].count = 1;

  2243.             sgpd_entries[entries].roll_distance = distance;

  2244.             sgpd_entries[entries].group_description_index = distance ? ++group : 0;

  2245.         }

  2246.     }

  2247.     } else {

  2248.         entries++;

  2249.         sgpd_entries[entries].count = track->sample_count;

  2250.         sgpd_entries[entries].roll_distance = 1;

  2251.         sgpd_entries[entries].group_description_index = ++group;

  2252.     }

  2253.     entries++;

  2254. 

  2255.     if (!group) {

  2256.         av_free(sgpd_entries);

  2257.         return 0;

  2258.     }

  2259. 

  2260.     /* Write sgpd tag */

  2261.     avio_wb32(pb, 24 + (group * 2)); /* size */

  2262.     ffio_wfourcc(pb, "sgpd");

  2263.     avio_wb32(pb, 1 << 24); /* fullbox */

  2264.     ffio_wfourcc(pb, "roll");

  2265.     avio_wb32(pb, 2); /* default_length */

  2266.     avio_wb32(pb, group); /* entry_count */

  2267.     for (i = 0; i < entries; i++) {

  2268.         if (sgpd_entries[i].group_description_index) {

  2269.             avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */

  2270.         }

  2271.     }

  2272. 

  2273.     /* Write sbgp tag */

  2274.     avio_wb32(pb, 20 + (entries * 8)); /* size */

  2275.     ffio_wfourcc(pb, "sbgp");

  2276.     avio_wb32(pb, 0); /* fullbox */

  2277.     ffio_wfourcc(pb, "roll");

  2278.     avio_wb32(pb, entries); /* entry_count */

  2279.     for (i = 0; i < entries; i++) {

  2280.         avio_wb32(pb, sgpd_entries[i].count); /* sample_count */

  2281.         avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */

  2282.     }

  2283. 

  2284.     av_free(sgpd_entries);

  2285.     return 0;

  2286. }

  2287. 

  2288. static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

  2289. {

  2290.     int64_t pos = avio_tell(pb);

  2291.     int ret;

  2292. 

  2293.     avio_wb32(pb, 0); /* size */

  2294.     ffio_wfourcc(pb, "stbl");

  2295.     mov_write_stsd_tag(s, pb, mov, track);

  2296.     mov_write_stts_tag(pb, track);

  2297.     if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||

  2298.          track->par->codec_tag == MKTAG('r','t','p',' ')) &&

  2299.         track->has_keyframes && track->has_keyframes < track->entry)

  2300.         mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);

  2301.     if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)

  2302.         mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);

  2303.     if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&

  2304.         track->flags & MOV_TRACK_CTTS && track->entry) {

  2305. 

  2306.         if ((ret = mov_write_ctts_tag(pb, track)) < 0)

  2307.             return ret;

  2308.     }

  2309.     mov_write_stsc_tag(pb, track);

  2310.     mov_write_stsz_tag(pb, track);

  2311.     mov_write_stco_tag(pb, track);

  2312.     if (track->cenc.aes_ctr) {

  2313.         ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);

  2314.     }

  2315.     if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {

  2316.         mov_preroll_write_stbl_atoms(pb, track);

  2317.     }

  2318.     return update_size(pb, pos);

  2319. }

  2320. 

  2321. static int mov_write_dinf_tag(AVIOContext *pb)

  2322. {

  2323.     int64_t pos = avio_tell(pb);

  2324.     avio_wb32(pb, 0); /* size */

  2325.     ffio_wfourcc(pb, "dinf");

  2326.     mov_write_dref_tag(pb);

  2327.     return update_size(pb, pos);

  2328. }

  2329. 

  2330. static int mov_write_nmhd_tag(AVIOContext *pb)

  2331. {

  2332.     avio_wb32(pb, 12);

  2333.     ffio_wfourcc(pb, "nmhd");

  2334.     avio_wb32(pb, 0);

  2335.     return 12;

  2336. }

  2337. 

  2338. static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)

  2339. {

  2340.     int64_t pos = avio_tell(pb);

  2341.     const char *font = "Lucida Grande";

  2342.     avio_wb32(pb, 0);                   /* size */

  2343.     ffio_wfourcc(pb, "tcmi");           /* timecode media information atom */

  2344.     avio_wb32(pb, 0);                   /* version & flags */

  2345.     avio_wb16(pb, 0);                   /* text font */

  2346.     avio_wb16(pb, 0);                   /* text face */

  2347.     avio_wb16(pb, 12);                  /* text size */

  2348.     avio_wb16(pb, 0);                   /* (unknown, not in the QT specs...) */

  2349.     avio_wb16(pb, 0x0000);              /* text color (red) */

  2350.     avio_wb16(pb, 0x0000);              /* text color (green) */

  2351.     avio_wb16(pb, 0x0000);              /* text color (blue) */

  2352.     avio_wb16(pb, 0xffff);              /* background color (red) */

  2353.     avio_wb16(pb, 0xffff);              /* background color (green) */

  2354.     avio_wb16(pb, 0xffff);              /* background color (blue) */

  2355.     avio_w8(pb, strlen(font));          /* font len (part of the pascal string) */

  2356.     avio_write(pb, font, strlen(font)); /* font name */

  2357.     return update_size(pb, pos);

  2358. }

  2359. 

  2360. static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)

  2361. {

  2362.     int64_t pos = avio_tell(pb);

  2363.     avio_wb32(pb, 0);      /* size */

  2364.     ffio_wfourcc(pb, "gmhd");

  2365.     avio_wb32(pb, 0x18);   /* gmin size */

  2366.     ffio_wfourcc(pb, "gmin");/* generic media info */

  2367.     avio_wb32(pb, 0);      /* version & flags */

  2368.     avio_wb16(pb, 0x40);   /* graphics mode = */

  2369.     avio_wb16(pb, 0x8000); /* opColor (r?) */

  2370.     avio_wb16(pb, 0x8000); /* opColor (g?) */

  2371.     avio_wb16(pb, 0x8000); /* opColor (b?) */

  2372.     avio_wb16(pb, 0);      /* balance */

  2373.     avio_wb16(pb, 0);      /* reserved */

  2374. 

  2375.     /*

  2376.      * This special text atom is required for

  2377.      * Apple Quicktime chapters. The contents

  2378.      * don't appear to be documented, so the

  2379.      * bytes are copied verbatim.

  2380.      */

  2381.     if (track->tag != MKTAG('c','6','0','8')) {

  2382.     avio_wb32(pb, 0x2C);   /* size */

  2383.     ffio_wfourcc(pb, "text");

  2384.     avio_wb16(pb, 0x01);

  2385.     avio_wb32(pb, 0x00);

  2386.     avio_wb32(pb, 0x00);

  2387.     avio_wb32(pb, 0x00);

  2388.     avio_wb32(pb, 0x01);

  2389.     avio_wb32(pb, 0x00);

  2390.     avio_wb32(pb, 0x00);

  2391.     avio_wb32(pb, 0x00);

  2392.     avio_wb32(pb, 0x00004000);

  2393.     avio_wb16(pb, 0x0000);

  2394.     }

  2395. 

  2396.     if (track->par->codec_tag == MKTAG('t','m','c','d')) {

  2397.         int64_t tmcd_pos = avio_tell(pb);

  2398.         avio_wb32(pb, 0); /* size */

  2399.         ffio_wfourcc(pb, "tmcd");

  2400.         mov_write_tcmi_tag(pb, track);

  2401.         update_size(pb, tmcd_pos);

  2402.     } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {

  2403.         int64_t gpmd_pos = avio_tell(pb);

  2404.         avio_wb32(pb, 0); /* size */

  2405.         ffio_wfourcc(pb, "gpmd");

  2406.         avio_wb32(pb, 0); /* version */

  2407.         update_size(pb, gpmd_pos);

  2408.     }

  2409.     return update_size(pb, pos);

  2410. }

  2411. 

  2412. static int mov_write_smhd_tag(AVIOContext *pb)

  2413. {

  2414.     avio_wb32(pb, 16); /* size */

  2415.     ffio_wfourcc(pb, "smhd");

  2416.     avio_wb32(pb, 0); /* version & flags */

  2417.     avio_wb16(pb, 0); /* reserved (balance, normally = 0) */

  2418.     avio_wb16(pb, 0); /* reserved */

  2419.     return 16;

  2420. }

  2421. 

  2422. static int mov_write_vmhd_tag(AVIOContext *pb)

  2423. {

  2424.     avio_wb32(pb, 0x14); /* size (always 0x14) */

  2425.     ffio_wfourcc(pb, "vmhd");

  2426.     avio_wb32(pb, 0x01); /* version & flags */

  2427.     avio_wb64(pb, 0); /* reserved (graphics mode = copy) */

  2428.     return 0x14;

  2429. }

  2430. 

  2431. static int is_clcp_track(MOVTrack *track)

  2432. {

  2433.     return track->tag == MKTAG('c','7','0','8') ||

  2434.            track->tag == MKTAG('c','6','0','8');

  2435. }

  2436. 

  2437. static int mov_write_hdlr_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)

  2438. {

  2439.     const char *hdlr, *descr = NULL, *hdlr_type = NULL;

  2440.     int64_t pos = avio_tell(pb);

  2441. 

  2442.     hdlr      = "dhlr";

  2443.     hdlr_type = "url ";

  2444.     descr     = "DataHandler";

  2445. 

  2446.     if (track) {

  2447.         hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";

  2448.         if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  2449.             hdlr_type = "vide";

  2450.             descr     = "VideoHandler";

  2451.         } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {

  2452.             hdlr_type = "soun";

  2453.             descr     = "SoundHandler";

  2454.         } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {

  2455.             if (is_clcp_track(track)) {

  2456.                 hdlr_type = "clcp";

  2457.                 descr = "ClosedCaptionHandler";

  2458.             } else {

  2459.                 if (track->tag == MKTAG('t','x','3','g')) {

  2460.                     hdlr_type = "sbtl";

  2461.                 } else if (track->tag == MKTAG('m','p','4','s')) {

  2462.                     hdlr_type = "subp";

  2463.                 } else {

  2464.                     hdlr_type = "text";

  2465.                 }

  2466.             descr = "SubtitleHandler";

  2467.             }

  2468.         } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {

  2469.             hdlr_type = "hint";

  2470.             descr     = "HintHandler";

  2471.         } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {

  2472.             hdlr_type = "tmcd";

  2473.             descr = "TimeCodeHandler";

  2474.         } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {

  2475.             hdlr_type = "meta";

  2476.             descr = "GoPro MET"; // GoPro Metadata

  2477.         } else {

  2478.             av_log(s, AV_LOG_WARNING,

  2479.                    "Unknown hldr_type for %s, writing dummy values\n",

  2480.                    av_fourcc2str(track->par->codec_tag));

  2481.         }

  2482.         if (track->st) {

  2483.             // hdlr.name is used by some players to identify the content title

  2484.             // of the track. So if an alternate handler description is

  2485.             // specified, use it.

  2486.             AVDictionaryEntry *t;

  2487.             t = av_dict_get(track->st->metadata, "handler", NULL, 0);

  2488.             if (t && utf8len(t->value))

  2489.                 descr = t->value;

  2490.         }

  2491.     }

  2492. 

  2493.     avio_wb32(pb, 0); /* size */

  2494.     ffio_wfourcc(pb, "hdlr");

  2495.     avio_wb32(pb, 0); /* Version & flags */

  2496.     avio_write(pb, hdlr, 4); /* handler */

  2497.     ffio_wfourcc(pb, hdlr_type); /* handler type */

  2498.     avio_wb32(pb, 0); /* reserved */

  2499.     avio_wb32(pb, 0); /* reserved */

  2500.     avio_wb32(pb, 0); /* reserved */

  2501.     if (!track || track->mode == MODE_MOV)

  2502.         avio_w8(pb, strlen(descr)); /* pascal string */

  2503.     avio_write(pb, descr, strlen(descr)); /* handler description */

  2504.     if (track && track->mode != MODE_MOV)

  2505.         avio_w8(pb, 0); /* c string */

  2506.     return update_size(pb, pos);

  2507. }

  2508. 

  2509. static int mov_write_hmhd_tag(AVIOContext *pb)

  2510. {

  2511.     /* This atom must be present, but leaving the values at zero

  2512.      * seems harmless. */

  2513.     avio_wb32(pb, 28); /* size */

  2514.     ffio_wfourcc(pb, "hmhd");

  2515.     avio_wb32(pb, 0); /* version, flags */

  2516.     avio_wb16(pb, 0); /* maxPDUsize */

  2517.     avio_wb16(pb, 0); /* avgPDUsize */

  2518.     avio_wb32(pb, 0); /* maxbitrate */

  2519.     avio_wb32(pb, 0); /* avgbitrate */

  2520.     avio_wb32(pb, 0); /* reserved */

  2521.     return 28;

  2522. }

  2523. 

  2524. static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)

  2525. {

  2526.     int64_t pos = avio_tell(pb);

  2527.     int ret;

  2528. 

  2529.     avio_wb32(pb, 0); /* size */

  2530.     ffio_wfourcc(pb, "minf");

  2531.     if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)

  2532.         mov_write_vmhd_tag(pb);

  2533.     else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)

  2534.         mov_write_smhd_tag(pb);

  2535.     else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {

  2536.         if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {

  2537.             mov_write_gmhd_tag(pb, track);

  2538.         } else {

  2539.             mov_write_nmhd_tag(pb);

  2540.         }

  2541.     } else if (track->tag == MKTAG('r','t','p',' ')) {

  2542.         mov_write_hmhd_tag(pb);

  2543.     } else if (track->tag == MKTAG('t','m','c','d')) {

  2544.         if (track->mode != MODE_MOV)

  2545.             mov_write_nmhd_tag(pb);

  2546.         else

  2547.             mov_write_gmhd_tag(pb, track);

  2548.     } else if (track->tag == MKTAG('g','p','m','d')) {

  2549.         mov_write_gmhd_tag(pb, track);

  2550.     }

  2551.     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */

  2552.         mov_write_hdlr_tag(s, pb, NULL);

  2553.     mov_write_dinf_tag(pb);

  2554.     if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)

  2555.         return ret;

  2556.     return update_size(pb, pos);

  2557. }

  2558. 

  2559. static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,

  2560.                               MOVTrack *track)

  2561. {

  2562.     int version = track->track_duration < INT32_MAX ? 0 : 1;

  2563. 

  2564.     if (track->mode == MODE_ISM)

  2565.         version = 1;

  2566. 

  2567.     (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */

  2568.     ffio_wfourcc(pb, "mdhd");

  2569.     avio_w8(pb, version);

  2570.     avio_wb24(pb, 0); /* flags */

  2571.     if (version == 1) {

  2572.         avio_wb64(pb, track->time);

  2573.         avio_wb64(pb, track->time);

  2574.     } else {

  2575.         avio_wb32(pb, track->time); /* creation time */

  2576.         avio_wb32(pb, track->time); /* modification time */

  2577.     }

  2578.     avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */

  2579.     if (!track->entry && mov->mode == MODE_ISM)

  2580.         (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);

  2581.     else if (!track->entry)

  2582.         (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);

  2583.     else

  2584.         (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */

  2585.     avio_wb16(pb, track->language); /* language */

  2586.     avio_wb16(pb, 0); /* reserved (quality) */

  2587. 

  2588.     if (version != 0 && track->mode == MODE_MOV) {

  2589.         av_log(NULL, AV_LOG_ERROR,

  2590.                "FATAL error, file duration too long for timebase, this file will not be\n"

  2591.                "playable with quicktime. Choose a different timebase or a different\n"

  2592.                "container format\n");

  2593.     }

  2594. 

  2595.     return 32;

  2596. }

  2597. 

  2598. static int mov_write_mdia_tag(AVFormatContext *s, AVIOContext *pb,

  2599.                               MOVMuxContext *mov, MOVTrack *track)

  2600. {

  2601.     int64_t pos = avio_tell(pb);

  2602.     int ret;

  2603. 

  2604.     avio_wb32(pb, 0); /* size */

  2605.     ffio_wfourcc(pb, "mdia");

  2606.     mov_write_mdhd_tag(pb, mov, track);

  2607.     mov_write_hdlr_tag(s, pb, track);

  2608.     if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)

  2609.         return ret;

  2610.     return update_size(pb, pos);

  2611. }

  2612. 

  2613. /* transformation matrix

  2614.      |a  b  u|

  2615.      |c  d  v|

  2616.      |tx ty w| */

  2617. static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,

  2618.                          int16_t d, int16_t tx, int16_t ty)

  2619. {

  2620.     avio_wb32(pb, a << 16);  /* 16.16 format */

  2621.     avio_wb32(pb, b << 16);  /* 16.16 format */

  2622.     avio_wb32(pb, 0);        /* u in 2.30 format */

  2623.     avio_wb32(pb, c << 16);  /* 16.16 format */

  2624.     avio_wb32(pb, d << 16);  /* 16.16 format */

  2625.     avio_wb32(pb, 0);        /* v in 2.30 format */

  2626.     avio_wb32(pb, tx << 16); /* 16.16 format */

  2627.     avio_wb32(pb, ty << 16); /* 16.16 format */

  2628.     avio_wb32(pb, 1 << 30);  /* w in 2.30 format */

  2629. }

  2630. 

  2631. static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,

  2632.                               MOVTrack *track, AVStream *st)

  2633. {

  2634.     int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,

  2635.                                       track->timescale, AV_ROUND_UP);

  2636.     int version = duration < INT32_MAX ? 0 : 1;

  2637.     int flags   = MOV_TKHD_FLAG_IN_MOVIE;

  2638.     int rotation = 0;

  2639.     int group   = 0;

  2640. 

  2641.     uint32_t *display_matrix = NULL;

  2642.     int      display_matrix_size, i;

  2643. 

  2644.     if (st) {

  2645.         if (mov->per_stream_grouping)

  2646.             group = st->index;

  2647.         else

  2648.             group = st->codecpar->codec_type;

  2649. 

  2650.         display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,

  2651.                                                             &display_matrix_size);

  2652.         if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))

  2653.             display_matrix = NULL;

  2654.     }

  2655. 

  2656.     if (track->flags & MOV_TRACK_ENABLED)

  2657.         flags |= MOV_TKHD_FLAG_ENABLED;

  2658. 

  2659.     if (track->mode == MODE_ISM)

  2660.         version = 1;

  2661. 

  2662.     (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */

  2663.     ffio_wfourcc(pb, "tkhd");

  2664.     avio_w8(pb, version);

  2665.     avio_wb24(pb, flags);

  2666.     if (version == 1) {

  2667.         avio_wb64(pb, track->time);

  2668.         avio_wb64(pb, track->time);

  2669.     } else {

  2670.         avio_wb32(pb, track->time); /* creation time */

  2671.         avio_wb32(pb, track->time); /* modification time */

  2672.     }

  2673.     avio_wb32(pb, track->track_id); /* track-id */

  2674.     avio_wb32(pb, 0); /* reserved */

  2675.     if (!track->entry && mov->mode == MODE_ISM)

  2676.         (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);

  2677.     else if (!track->entry)

  2678.         (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);

  2679.     else

  2680.         (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);

  2681. 

  2682.     avio_wb32(pb, 0); /* reserved */

  2683.     avio_wb32(pb, 0); /* reserved */

  2684.     avio_wb16(pb, 0); /* layer */

  2685.     avio_wb16(pb, group); /* alternate group) */

  2686.     /* Volume, only for audio */

  2687.     if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)

  2688.         avio_wb16(pb, 0x0100);

  2689.     else

  2690.         avio_wb16(pb, 0);

  2691.     avio_wb16(pb, 0); /* reserved */

  2692. 

  2693.     /* Matrix structure */

  2694. #if FF_API_OLD_ROTATE_API

  2695.     if (st && st->metadata) {

  2696.         AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);

  2697.         rotation = (rot && rot->value) ? atoi(rot->value) : 0;

  2698.     }

  2699. #endif

  2700.     if (display_matrix) {

  2701.         for (i = 0; i < 9; i++)

  2702.             avio_wb32(pb, display_matrix[i]);

  2703. #if FF_API_OLD_ROTATE_API

  2704.     } else if (rotation == 90) {

  2705.         write_matrix(pb,  0,  1, -1,  0, track->par->height, 0);

  2706.     } else if (rotation == 180) {

  2707.         write_matrix(pb, -1,  0,  0, -1, track->par->width, track->par->height);

  2708.     } else if (rotation == 270) {

  2709.         write_matrix(pb,  0, -1,  1,  0, 0, track->par->width);

  2710. #endif

  2711.     } else {

  2712.         write_matrix(pb,  1,  0,  0,  1, 0, 0);

  2713.     }

  2714.     /* Track width and height, for visual only */

  2715.     if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||

  2716.                track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {

  2717.         int64_t track_width_1616;

  2718.         if (track->mode == MODE_MOV) {

  2719.             track_width_1616 = track->par->width * 0x10000ULL;

  2720.         } else {

  2721.             track_width_1616 = av_rescale(st->sample_aspect_ratio.num,

  2722.                                                   track->par->width * 0x10000LL,

  2723.                                                   st->sample_aspect_ratio.den);

  2724.             if (!track_width_1616 ||

  2725.                 track->height != track->par->height ||

  2726.                 track_width_1616 > UINT32_MAX)

  2727.                 track_width_1616 = track->par->width * 0x10000ULL;

  2728.         }

  2729.         if (track_width_1616 > UINT32_MAX) {

  2730.             av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");

  2731.             track_width_1616 = 0;

  2732.         }

  2733.         avio_wb32(pb, track_width_1616);

  2734.         if (track->height > 0xFFFF) {

  2735.             av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");

  2736.             avio_wb32(pb, 0);

  2737.         } else

  2738.             avio_wb32(pb, track->height * 0x10000U);

  2739.     } else {

  2740.         avio_wb32(pb, 0);

  2741.         avio_wb32(pb, 0);

  2742.     }

  2743.     return 0x5c;

  2744. }

  2745. 

  2746. static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)

  2747. {

  2748.     int32_t width = av_rescale(track->par->sample_aspect_ratio.num, track->par->width,

  2749.                                track->par->sample_aspect_ratio.den);

  2750. 

  2751.     int64_t pos = avio_tell(pb);

  2752. 

  2753.     avio_wb32(pb, 0); /* size */

  2754.     ffio_wfourcc(pb, "tapt");

  2755. 

  2756.     avio_wb32(pb, 20);

  2757.     ffio_wfourcc(pb, "clef");

  2758.     avio_wb32(pb, 0);

  2759.     avio_wb32(pb, width << 16);

  2760.     avio_wb32(pb, track->par->height << 16);

  2761. 

  2762.     avio_wb32(pb, 20);

  2763.     ffio_wfourcc(pb, "prof");

  2764.     avio_wb32(pb, 0);

  2765.     avio_wb32(pb, width << 16);

  2766.     avio_wb32(pb, track->par->height << 16);

  2767. 

  2768.     avio_wb32(pb, 20);

  2769.     ffio_wfourcc(pb, "enof");

  2770.     avio_wb32(pb, 0);

  2771.     avio_wb32(pb, track->par->width << 16);

  2772.     avio_wb32(pb, track->par->height << 16);

  2773. 

  2774.     return update_size(pb, pos);

  2775. }

  2776. 

  2777. // This box seems important for the psp playback ... without it the movie seems to hang

  2778. static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,

  2779.                               MOVTrack *track)

  2780. {

  2781.     int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,

  2782.                                       track->timescale, AV_ROUND_UP);

  2783.     int version = duration < INT32_MAX ? 0 : 1;

  2784.     int entry_size, entry_count, size;

  2785.     int64_t delay, start_ct = track->start_cts;

  2786.     int64_t start_dts = track->start_dts;

  2787. 

  2788.     if (track->entry) {

  2789.         if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {

  2790. 

  2791.             av_log(mov->fc, AV_LOG_DEBUG,

  2792.                    "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",

  2793.                    track->cluster[0].dts, track->cluster[0].cts,

  2794.                    start_dts, start_ct, track->track_id);

  2795.             start_dts = track->cluster[0].dts;

  2796.             start_ct  = track->cluster[0].cts;

  2797.         }

  2798.     }

  2799. 

  2800.     delay = av_rescale_rnd(start_dts + start_ct, MOV_TIMESCALE,

  2801.                            track->timescale, AV_ROUND_DOWN);

  2802.     version |= delay < INT32_MAX ? 0 : 1;

  2803. 

  2804.     entry_size = (version == 1) ? 20 : 12;

  2805.     entry_count = 1 + (delay > 0);

  2806.     size = 24 + entry_count * entry_size;

  2807. 

  2808.     /* write the atom data */

  2809.     avio_wb32(pb, size);

  2810.     ffio_wfourcc(pb, "edts");

  2811.     avio_wb32(pb, size - 8);

  2812.     ffio_wfourcc(pb, "elst");

  2813.     avio_w8(pb, version);

  2814.     avio_wb24(pb, 0); /* flags */

  2815. 

  2816.     avio_wb32(pb, entry_count);

  2817.     if (delay > 0) { /* add an empty edit to delay presentation */

  2818.         /* In the positive delay case, the delay includes the cts

  2819.          * offset, and the second edit list entry below trims out

  2820.          * the same amount from the actual content. This makes sure

  2821.          * that the offset last sample is included in the edit

  2822.          * list duration as well. */

  2823.         if (version == 1) {

  2824.             avio_wb64(pb, delay);

  2825.             avio_wb64(pb, -1);

  2826.         } else {

  2827.             avio_wb32(pb, delay);

  2828.             avio_wb32(pb, -1);

  2829.         }

  2830.         avio_wb32(pb, 0x00010000);

  2831.     } else {

  2832.         /* Avoid accidentally ending up with start_ct = -1 which has got a

  2833.          * special meaning. Normally start_ct should end up positive or zero

  2834.          * here, but use FFMIN in case dts is a small positive integer

  2835.          * rounded to 0 when represented in MOV_TIMESCALE units. */

  2836.         av_assert0(av_rescale_rnd(start_dts, MOV_TIMESCALE, track->timescale, AV_ROUND_DOWN) <= 0);

  2837.         start_ct  = -FFMIN(start_dts, 0);

  2838.         /* Note, this delay is calculated from the pts of the first sample,

  2839.          * ensuring that we don't reduce the duration for cases with

  2840.          * dts<0 pts=0. */

  2841.         duration += delay;

  2842.     }

  2843. 

  2844.     /* For fragmented files, we don't know the full length yet. Setting

  2845.      * duration to 0 allows us to only specify the offset, including

  2846.      * the rest of the content (from all future fragments) without specifying

  2847.      * an explicit duration. */

  2848.     if (mov->flags & FF_MOV_FLAG_FRAGMENT)

  2849.         duration = 0;

  2850. 

  2851.     /* duration */

  2852.     if (version == 1) {

  2853.         avio_wb64(pb, duration);

  2854.         avio_wb64(pb, start_ct);

  2855.     } else {

  2856.         avio_wb32(pb, duration);

  2857.         avio_wb32(pb, start_ct);

  2858.     }

  2859.     avio_wb32(pb, 0x00010000);

  2860.     return size;

  2861. }

  2862. 

  2863. static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)

  2864. {

  2865.     avio_wb32(pb, 20);   // size

  2866.     ffio_wfourcc(pb, "tref");

  2867.     avio_wb32(pb, 12);   // size (subatom)

  2868.     avio_wl32(pb, track->tref_tag);

  2869.     avio_wb32(pb, track->tref_id);

  2870.     return 20;

  2871. }

  2872. 

  2873. // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)

  2874. static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)

  2875. {

  2876.     avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */

  2877.     ffio_wfourcc(pb, "uuid");

  2878.     ffio_wfourcc(pb, "USMT");

  2879.     avio_wb32(pb, 0x21d24fce);

  2880.     avio_wb32(pb, 0xbb88695c);

  2881.     avio_wb32(pb, 0xfac9c740);

  2882.     avio_wb32(pb, 0x1c);     // another size here!

  2883.     ffio_wfourcc(pb, "MTDT");

  2884.     avio_wb32(pb, 0x00010012);

  2885.     avio_wb32(pb, 0x0a);

  2886.     avio_wb32(pb, 0x55c40000);

  2887.     avio_wb32(pb, 0x1);

  2888.     avio_wb32(pb, 0x0);

  2889.     return 0x34;

  2890. }

  2891. 

  2892. static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)

  2893. {

  2894.     AVFormatContext *ctx = track->rtp_ctx;

  2895.     char buf[1000] = "";

  2896.     int len;

  2897. 

  2898.     ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,

  2899.                        NULL, NULL, 0, 0, ctx);

  2900.     av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);

  2901.     len = strlen(buf);

  2902. 

  2903.     avio_wb32(pb, len + 24);

  2904.     ffio_wfourcc(pb, "udta");

  2905.     avio_wb32(pb, len + 16);

  2906.     ffio_wfourcc(pb, "hnti");

  2907.     avio_wb32(pb, len + 8);

  2908.     ffio_wfourcc(pb, "sdp ");

  2909.     avio_write(pb, buf, len);

  2910.     return len + 24;

  2911. }

  2912. 

  2913. static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,

  2914.                                     const char *tag, const char *str)

  2915. {

  2916.     int64_t pos = avio_tell(pb);

  2917.     AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);

  2918.     if (!t || !utf8len(t->value))

  2919.         return 0;

  2920. 

  2921.     avio_wb32(pb, 0);   /* size */

  2922.     ffio_wfourcc(pb, tag); /* type */

  2923.     avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */

  2924.     return update_size(pb, pos);

  2925. }

  2926. 

  2927. static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,

  2928.                                     AVStream *st)

  2929. {

  2930.     AVIOContext *pb_buf;

  2931.     int ret, size;

  2932.     uint8_t *buf;

  2933. 

  2934.     if (!st)

  2935.         return 0;

  2936. 

  2937.     ret = avio_open_dyn_buf(&pb_buf);

  2938.     if (ret < 0)

  2939.         return ret;

  2940. 

  2941.     if (mov->mode & MODE_MP4)

  2942.         mov_write_track_metadata(pb_buf, st, "name", "title");

  2943. 

  2944.     if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {

  2945.         avio_wb32(pb, size + 8);

  2946.         ffio_wfourcc(pb, "udta");

  2947.         avio_write(pb, buf, size);

  2948.     }

  2949.     av_free(buf);

  2950. 

  2951.     return 0;

  2952. }

  2953. 

  2954. static int mov_write_trak_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov,

  2955.                               MOVTrack *track, AVStream *st)

  2956. {

  2957.     int64_t pos = avio_tell(pb);

  2958.     int entry_backup = track->entry;

  2959.     int chunk_backup = track->chunkCount;

  2960.     int ret;

  2961. 

  2962.     /* If we want to have an empty moov, but some samples already have been

  2963.      * buffered (delay_moov), pretend that no samples have been written yet. */

  2964.     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)

  2965.         track->chunkCount = track->entry = 0;

  2966. 

  2967.     avio_wb32(pb, 0); /* size */

  2968.     ffio_wfourcc(pb, "trak");

  2969.     mov_write_tkhd_tag(pb, mov, track, st);

  2970. 

  2971.     av_assert2(mov->use_editlist >= 0);

  2972. 

  2973.     if (track->start_dts != AV_NOPTS_VALUE) {

  2974.         if (mov->use_editlist)

  2975.             mov_write_edts_tag(pb, mov, track);  // PSP Movies and several other cases require edts box

  2976.         else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))

  2977.             av_log(mov->fc, AV_LOG_WARNING,

  2978.                    "Not writing any edit list even though one would have been required\n");

  2979.     }

  2980. 

  2981.     if (track->tref_tag)

  2982.         mov_write_tref_tag(pb, track);

  2983. 

  2984.     if ((ret = mov_write_mdia_tag(s, pb, mov, track)) < 0)

  2985.         return ret;

  2986.     if (track->mode == MODE_PSP)

  2987.         mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box

  2988.     if (track->tag == MKTAG('r','t','p',' '))

  2989.         mov_write_udta_sdp(pb, track);

  2990.     if (track->mode == MODE_MOV) {

  2991.         if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  2992.             double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);

  2993.             if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {

  2994.                 mov_write_tapt_tag(pb, track);

  2995.             }

  2996.         }

  2997.         if (is_clcp_track(track) && st->sample_aspect_ratio.num) {

  2998.             mov_write_tapt_tag(pb, track);

  2999.         }

  3000.     }

  3001.     mov_write_track_udta_tag(pb, mov, st);

  3002.     track->entry = entry_backup;

  3003.     track->chunkCount = chunk_backup;

  3004.     return update_size(pb, pos);

  3005. }

  3006. 

  3007. static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)

  3008. {

  3009.     int i, has_audio = 0, has_video = 0;

  3010.     int64_t pos = avio_tell(pb);

  3011.     int audio_profile = mov->iods_audio_profile;

  3012.     int video_profile = mov->iods_video_profile;

  3013.     for (i = 0; i < mov->nb_streams; i++) {

  3014.         if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {

  3015.             has_audio |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_AUDIO;

  3016.             has_video |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_VIDEO;

  3017.         }

  3018.     }

  3019.     if (audio_profile < 0)

  3020.         audio_profile = 0xFF - has_audio;

  3021.     if (video_profile < 0)

  3022.         video_profile = 0xFF - has_video;

  3023.     avio_wb32(pb, 0x0); /* size */

  3024.     ffio_wfourcc(pb, "iods");

  3025.     avio_wb32(pb, 0);    /* version & flags */

  3026.     put_descr(pb, 0x10, 7);

  3027.     avio_wb16(pb, 0x004f);

  3028.     avio_w8(pb, 0xff);

  3029.     avio_w8(pb, 0xff);

  3030.     avio_w8(pb, audio_profile);

  3031.     avio_w8(pb, video_profile);

  3032.     avio_w8(pb, 0xff);

  3033.     return update_size(pb, pos);

  3034. }

  3035. 

  3036. static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)

  3037. {

  3038.     avio_wb32(pb, 0x20); /* size */

  3039.     ffio_wfourcc(pb, "trex");

  3040.     avio_wb32(pb, 0);   /* version & flags */

  3041.     avio_wb32(pb, track->track_id); /* track ID */

  3042.     avio_wb32(pb, 1);   /* default sample description index */

  3043.     avio_wb32(pb, 0);   /* default sample duration */

  3044.     avio_wb32(pb, 0);   /* default sample size */

  3045.     avio_wb32(pb, 0);   /* default sample flags */

  3046.     return 0;

  3047. }

  3048. 

  3049. static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)

  3050. {

  3051.     int64_t pos = avio_tell(pb);

  3052.     int i;

  3053.     avio_wb32(pb, 0x0); /* size */

  3054.     ffio_wfourcc(pb, "mvex");

  3055.     for (i = 0; i < mov->nb_streams; i++)

  3056.         mov_write_trex_tag(pb, &mov->tracks[i]);

  3057.     return update_size(pb, pos);

  3058. }

  3059. 

  3060. static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)

  3061. {

  3062.     int max_track_id = 1, i;

  3063.     int64_t max_track_len = 0;

  3064.     int version;

  3065. 

  3066.     for (i = 0; i < mov->nb_streams; i++) {

  3067.         if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {

  3068.             int64_t max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,

  3069.                                                 MOV_TIMESCALE,

  3070.                                                 mov->tracks[i].timescale,

  3071.                                                 AV_ROUND_UP);

  3072.             if (max_track_len < max_track_len_temp)

  3073.                 max_track_len = max_track_len_temp;

  3074.             if (max_track_id < mov->tracks[i].track_id)

  3075.                 max_track_id = mov->tracks[i].track_id;

  3076.         }

  3077.     }

  3078.     /* If using delay_moov, make sure the output is the same as if no

  3079.      * samples had been written yet. */

  3080.     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {

  3081.         max_track_len = 0;

  3082.         max_track_id  = 1;

  3083.     }

  3084. 

  3085.     version = max_track_len < UINT32_MAX ? 0 : 1;

  3086.     avio_wb32(pb, version == 1 ? 120 : 108); /* size */

  3087. 

  3088.     ffio_wfourcc(pb, "mvhd");

  3089.     avio_w8(pb, version);

  3090.     avio_wb24(pb, 0); /* flags */

  3091.     if (version == 1) {

  3092.         avio_wb64(pb, mov->time);

  3093.         avio_wb64(pb, mov->time);

  3094.     } else {

  3095.         avio_wb32(pb, mov->time); /* creation time */

  3096.         avio_wb32(pb, mov->time); /* modification time */

  3097.     }

  3098.     avio_wb32(pb, MOV_TIMESCALE);

  3099.     (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */

  3100. 

  3101.     avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */

  3102.     avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */

  3103.     avio_wb16(pb, 0); /* reserved */

  3104.     avio_wb32(pb, 0); /* reserved */

  3105.     avio_wb32(pb, 0); /* reserved */

  3106. 

  3107.     /* Matrix structure */

  3108.     write_matrix(pb, 1, 0, 0, 1, 0, 0);

  3109. 

  3110.     avio_wb32(pb, 0); /* reserved (preview time) */

  3111.     avio_wb32(pb, 0); /* reserved (preview duration) */

  3112.     avio_wb32(pb, 0); /* reserved (poster time) */

  3113.     avio_wb32(pb, 0); /* reserved (selection time) */

  3114.     avio_wb32(pb, 0); /* reserved (selection duration) */

  3115.     avio_wb32(pb, 0); /* reserved (current time) */

  3116.     avio_wb32(pb, max_track_id + 1); /* Next track id */

  3117.     return 0x6c;

  3118. }

  3119. 

  3120. static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,

  3121.                                      AVFormatContext *s)

  3122. {

  3123.     avio_wb32(pb, 33); /* size */

  3124.     ffio_wfourcc(pb, "hdlr");

  3125.     avio_wb32(pb, 0);

  3126.     avio_wb32(pb, 0);

  3127.     ffio_wfourcc(pb, "mdir");

  3128.     ffio_wfourcc(pb, "appl");

  3129.     avio_wb32(pb, 0);

  3130.     avio_wb32(pb, 0);

  3131.     avio_w8(pb, 0);

  3132.     return 33;

  3133. }

  3134. 

  3135. /* helper function to write a data tag with the specified string as data */

  3136. static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)

  3137. {

  3138.     if (long_style) {

  3139.         int size = 16 + strlen(data);

  3140.         avio_wb32(pb, size); /* size */

  3141.         ffio_wfourcc(pb, "data");

  3142.         avio_wb32(pb, 1);

  3143.         avio_wb32(pb, 0);

  3144.         avio_write(pb, data, strlen(data));

  3145.         return size;

  3146.     } else {

  3147.         if (!lang)

  3148.             lang = ff_mov_iso639_to_lang("und", 1);

  3149.         avio_wb16(pb, strlen(data)); /* string length */

  3150.         avio_wb16(pb, lang);

  3151.         avio_write(pb, data, strlen(data));

  3152.         return strlen(data) + 4;

  3153.     }

  3154. }

  3155. 

  3156. static int mov_write_string_tag(AVIOContext *pb, const char *name,

  3157.                                 const char *value, int lang, int long_style)

  3158. {

  3159.     int size = 0;

  3160.     if (value && value[0]) {

  3161.         int64_t pos = avio_tell(pb);

  3162.         avio_wb32(pb, 0); /* size */

  3163.         ffio_wfourcc(pb, name);

  3164.         mov_write_string_data_tag(pb, value, lang, long_style);

  3165.         size = update_size(pb, pos);

  3166.     }

  3167.     return size;

  3168. }

  3169. 

  3170. static AVDictionaryEntry *get_metadata_lang(AVFormatContext *s,

  3171.                                             const char *tag, int *lang)

  3172. {

  3173.     int l, len, len2;

  3174.     AVDictionaryEntry *t, *t2 = NULL;

  3175.     char tag2[16];

  3176. 

  3177.     *lang = 0;

  3178. 

  3179.     if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))

  3180.         return NULL;

  3181. 

  3182.     len = strlen(t->key);

  3183.     snprintf(tag2, sizeof(tag2), "%s-", tag);

  3184.     while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {

  3185.         len2 = strlen(t2->key);

  3186.         if (len2 == len + 4 && !strcmp(t->value, t2->value)

  3187.             && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {

  3188.             *lang = l;

  3189.             return t;

  3190.         }

  3191.     }

  3192.     return t;

  3193. }

  3194. 

  3195. static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,

  3196.                                      const char *name, const char *tag,

  3197.                                      int long_style)

  3198. {

  3199.     int lang;

  3200.     AVDictionaryEntry *t = get_metadata_lang(s, tag, &lang);

  3201.     if (!t)

  3202.         return 0;

  3203.     return mov_write_string_tag(pb, name, t->value, lang, long_style);

  3204. }

  3205. 

  3206. /* iTunes bpm number */

  3207. static int mov_write_tmpo_tag(AVIOContext *pb, AVFormatContext *s)

  3208. {

  3209.     AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);

  3210.     int size = 0, tmpo = t ? atoi(t->value) : 0;

  3211.     if (tmpo) {

  3212.         size = 26;

  3213.         avio_wb32(pb, size);

  3214.         ffio_wfourcc(pb, "tmpo");

  3215.         avio_wb32(pb, size-8); /* size */

  3216.         ffio_wfourcc(pb, "data");

  3217.         avio_wb32(pb, 0x15);  //type specifier

  3218.         avio_wb32(pb, 0);

  3219.         avio_wb16(pb, tmpo);        // data

  3220.     }

  3221.     return size;

  3222. }

  3223. 

  3224. /* 3GPP TS 26.244 */

  3225. static int mov_write_loci_tag(AVFormatContext *s, AVIOContext *pb)

  3226. {

  3227.     int lang;

  3228.     int64_t pos = avio_tell(pb);

  3229.     double latitude, longitude, altitude;

  3230.     int32_t latitude_fix, longitude_fix, altitude_fix;

  3231.     AVDictionaryEntry *t = get_metadata_lang(s, "location", &lang);

  3232.     const char *ptr, *place = "";

  3233.     char *end;

  3234.     static const char *astronomical_body = "earth";

  3235.     if (!t)

  3236.         return 0;

  3237. 

  3238.     ptr = t->value;

  3239.     longitude = strtod(ptr, &end);

  3240.     if (end == ptr) {

  3241.         av_log(s, AV_LOG_WARNING, "malformed location metadata\n");

  3242.         return 0;

  3243.     }

  3244.     ptr = end;

  3245.     latitude = strtod(ptr, &end);

  3246.     if (end == ptr) {

  3247.         av_log(s, AV_LOG_WARNING, "malformed location metadata\n");

  3248.         return 0;

  3249.     }

  3250.     ptr = end;

  3251.     altitude = strtod(ptr, &end);

  3252.     /* If no altitude was present, the default 0 should be fine */

  3253.     if (*end == '/')

  3254.         place = end + 1;

  3255. 

  3256.     latitude_fix  = (int32_t) ((1 << 16) * latitude);

  3257.     longitude_fix = (int32_t) ((1 << 16) * longitude);

  3258.     altitude_fix  = (int32_t) ((1 << 16) * altitude);

  3259. 

  3260.     avio_wb32(pb, 0);         /* size */

  3261.     ffio_wfourcc(pb, "loci"); /* type */

  3262.     avio_wb32(pb, 0);         /* version + flags */

  3263.     avio_wb16(pb, lang);

  3264.     avio_write(pb, place, strlen(place) + 1);

  3265.     avio_w8(pb, 0);           /* role of place (0 == shooting location, 1 == real location, 2 == fictional location) */

  3266.     avio_wb32(pb, latitude_fix);

  3267.     avio_wb32(pb, longitude_fix);

  3268.     avio_wb32(pb, altitude_fix);

  3269.     avio_write(pb, astronomical_body, strlen(astronomical_body) + 1);

  3270.     avio_w8(pb, 0);           /* additional notes, null terminated string */

  3271. 

  3272.     return update_size(pb, pos);

  3273. }

  3274. 

  3275. /* iTunes track or disc number */

  3276. static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,

  3277.                               AVFormatContext *s, int disc)

  3278. {

  3279.     AVDictionaryEntry *t = av_dict_get(s->metadata,

  3280.                                        disc ? "disc" : "track",

  3281.                                        NULL, 0);

  3282.     int size = 0, track = t ? atoi(t->value) : 0;

  3283.     if (track) {

  3284.         int tracks = 0;

  3285.         char *slash = strchr(t->value, '/');

  3286.         if (slash)

  3287.             tracks = atoi(slash + 1);

  3288.         avio_wb32(pb, 32); /* size */

  3289.         ffio_wfourcc(pb, disc ? "disk" : "trkn");

  3290.         avio_wb32(pb, 24); /* size */

  3291.         ffio_wfourcc(pb, "data");

  3292.         avio_wb32(pb, 0);        // 8 bytes empty

  3293.         avio_wb32(pb, 0);

  3294.         avio_wb16(pb, 0);        // empty

  3295.         avio_wb16(pb, track);    // track / disc number

  3296.         avio_wb16(pb, tracks);   // total track / disc number

  3297.         avio_wb16(pb, 0);        // empty

  3298.         size = 32;

  3299.     }

  3300.     return size;

  3301. }

  3302. 

  3303. static int mov_write_int8_metadata(AVFormatContext *s, AVIOContext *pb,

  3304.                                    const char *name, const char *tag,

  3305.                                    int len)

  3306. {

  3307.     AVDictionaryEntry *t = NULL;

  3308.     uint8_t num;

  3309.     int size = 24 + len;

  3310. 

  3311.     if (len != 1 && len != 4)

  3312.         return -1;

  3313. 

  3314.     if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))

  3315.         return 0;

  3316.     num = atoi(t->value);

  3317. 

  3318.     avio_wb32(pb, size);

  3319.     ffio_wfourcc(pb, name);

  3320.     avio_wb32(pb, size - 8);

  3321.     ffio_wfourcc(pb, "data");

  3322.     avio_wb32(pb, 0x15);

  3323.     avio_wb32(pb, 0);

  3324.     if (len==4) avio_wb32(pb, num);

  3325.     else        avio_w8 (pb, num);

  3326. 

  3327.     return size;

  3328. }

  3329. 

  3330. /* iTunes meta data list */

  3331. static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,

  3332.                               AVFormatContext *s)

  3333. {

  3334.     int64_t pos = avio_tell(pb);

  3335.     avio_wb32(pb, 0); /* size */

  3336.     ffio_wfourcc(pb, "ilst");

  3337.     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);

  3338.     mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);

  3339.     mov_write_string_metadata(s, pb, "aART", "album_artist", 1);

  3340.     mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);

  3341.     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);

  3342.     mov_write_string_metadata(s, pb, "\251day", "date"     , 1);

  3343.     if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {

  3344.         if (!(s->flags & AVFMT_FLAG_BITEXACT))

  3345.             mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);

  3346.     }

  3347.     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);

  3348.     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);

  3349.     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);

  3350.     mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);

  3351.     mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);

  3352.     mov_write_string_metadata(s, pb, "desc",    "description",1);

  3353.     mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);

  3354.     mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);

  3355.     mov_write_string_metadata(s, pb, "tven",    "episode_id",1);

  3356.     mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);

  3357.     mov_write_string_metadata(s, pb, "keyw",    "keywords"  , 1);

  3358.     mov_write_int8_metadata  (s, pb, "tves",    "episode_sort",4);

  3359.     mov_write_int8_metadata  (s, pb, "tvsn",    "season_number",4);

  3360.     mov_write_int8_metadata  (s, pb, "stik",    "media_type",1);

  3361.     mov_write_int8_metadata  (s, pb, "hdvd",    "hd_video",  1);

  3362.     mov_write_int8_metadata  (s, pb, "pgap",    "gapless_playback",1);

  3363.     mov_write_int8_metadata  (s, pb, "cpil",    "compilation", 1);

  3364.     mov_write_trkn_tag(pb, mov, s, 0); // track number

  3365.     mov_write_trkn_tag(pb, mov, s, 1); // disc number

  3366.     mov_write_tmpo_tag(pb, s);

  3367.     return update_size(pb, pos);

  3368. }

  3369. 

  3370. static int mov_write_mdta_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,

  3371.                                    AVFormatContext *s)

  3372. {

  3373.     avio_wb32(pb, 33); /* size */

  3374.     ffio_wfourcc(pb, "hdlr");

  3375.     avio_wb32(pb, 0);

  3376.     avio_wb32(pb, 0);

  3377.     ffio_wfourcc(pb, "mdta");

  3378.     avio_wb32(pb, 0);

  3379.     avio_wb32(pb, 0);

  3380.     avio_wb32(pb, 0);

  3381.     avio_w8(pb, 0);

  3382.     return 33;

  3383. }

  3384. 

  3385. static int mov_write_mdta_keys_tag(AVIOContext *pb, MOVMuxContext *mov,

  3386.                                    AVFormatContext *s)

  3387. {

  3388.     AVDictionaryEntry *t = NULL;

  3389.     int64_t pos = avio_tell(pb);

  3390.     int64_t curpos, entry_pos;

  3391.     int count = 0;

  3392. 

  3393.     avio_wb32(pb, 0); /* size */

  3394.     ffio_wfourcc(pb, "keys");

  3395.     avio_wb32(pb, 0);

  3396.     entry_pos = avio_tell(pb);

  3397.     avio_wb32(pb, 0); /* entry count */

  3398. 

  3399.     while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {

  3400.         avio_wb32(pb, strlen(t->key) + 8);

  3401.         ffio_wfourcc(pb, "mdta");

  3402.         avio_write(pb, t->key, strlen(t->key));

  3403.         count += 1;

  3404.     }

  3405.     curpos = avio_tell(pb);

  3406.     avio_seek(pb, entry_pos, SEEK_SET);

  3407.     avio_wb32(pb, count); // rewrite entry count

  3408.     avio_seek(pb, curpos, SEEK_SET);

  3409. 

  3410.     return update_size(pb, pos);

  3411. }

  3412. 

  3413. static int mov_write_mdta_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,

  3414.                                    AVFormatContext *s)

  3415. {

  3416.     AVDictionaryEntry *t = NULL;

  3417.     int64_t pos = avio_tell(pb);

  3418.     int count = 1; /* keys are 1-index based */

  3419. 

  3420.     avio_wb32(pb, 0); /* size */

  3421.     ffio_wfourcc(pb, "ilst");

  3422. 

  3423.     while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {

  3424.         int64_t entry_pos = avio_tell(pb);

  3425.         avio_wb32(pb, 0); /* size */

  3426.         avio_wb32(pb, count); /* key */

  3427.         mov_write_string_data_tag(pb, t->value, 0, 1);

  3428.         update_size(pb, entry_pos);

  3429.         count += 1;

  3430.     }

  3431.     return update_size(pb, pos);

  3432. }

  3433. 

  3434. /* meta data tags */

  3435. static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,

  3436.                               AVFormatContext *s)

  3437. {

  3438.     int size = 0;

  3439.     int64_t pos = avio_tell(pb);

  3440.     avio_wb32(pb, 0); /* size */

  3441.     ffio_wfourcc(pb, "meta");

  3442.     avio_wb32(pb, 0);

  3443.     if (mov->flags & FF_MOV_FLAG_USE_MDTA) {

  3444.         mov_write_mdta_hdlr_tag(pb, mov, s);

  3445.         mov_write_mdta_keys_tag(pb, mov, s);

  3446.         mov_write_mdta_ilst_tag(pb, mov, s);

  3447.     }

  3448.     else {

  3449.         /* iTunes metadata tag */

  3450.         mov_write_itunes_hdlr_tag(pb, mov, s);

  3451.         mov_write_ilst_tag(pb, mov, s);

  3452.     }

  3453.     size = update_size(pb, pos);

  3454.     return size;

  3455. }

  3456. 

  3457. static int mov_write_raw_metadata_tag(AVFormatContext *s, AVIOContext *pb,

  3458.                                       const char *name, const char *key)

  3459. {

  3460.     int len;

  3461.     AVDictionaryEntry *t;

  3462. 

  3463.     if (!(t = av_dict_get(s->metadata, key, NULL, 0)))

  3464.         return 0;

  3465. 

  3466.     len = strlen(t->value);

  3467.     if (len > 0) {

  3468.         int size = len + 8;

  3469.         avio_wb32(pb, size);

  3470.         ffio_wfourcc(pb, name);

  3471.         avio_write(pb, t->value, len);

  3472.         return size;

  3473.     }

  3474.     return 0;

  3475. }

  3476. 

  3477. static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)

  3478. {

  3479.     int val;

  3480.     while (*b) {

  3481.         GET_UTF8(val, *b++, return -1;)

  3482.         avio_wb16(pb, val);

  3483.     }

  3484.     avio_wb16(pb, 0x00);

  3485.     return 0;

  3486. }

  3487. 

  3488. static uint16_t language_code(const char *str)

  3489. {

  3490.     return (((str[0] - 0x60) & 0x1F) << 10) +

  3491.            (((str[1] - 0x60) & 0x1F) <<  5) +

  3492.            (( str[2] - 0x60) & 0x1F);

  3493. }

  3494. 

  3495. static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,

  3496.                                   const char *tag, const char *str)

  3497. {

  3498.     int64_t pos = avio_tell(pb);

  3499.     AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);

  3500.     if (!t || !utf8len(t->value))

  3501.         return 0;

  3502.     avio_wb32(pb, 0);   /* size */

  3503.     ffio_wfourcc(pb, tag); /* type */

  3504.     avio_wb32(pb, 0);   /* version + flags */

  3505.     if (!strcmp(tag, "yrrc"))

  3506.         avio_wb16(pb, atoi(t->value));

  3507.     else {

  3508.         avio_wb16(pb, language_code("eng")); /* language */

  3509.         avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */

  3510.         if (!strcmp(tag, "albm") &&

  3511.             (t = av_dict_get(s->metadata, "track", NULL, 0)))

  3512.             avio_w8(pb, atoi(t->value));

  3513.     }

  3514.     return update_size(pb, pos);

  3515. }

  3516. 

  3517. static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)

  3518. {

  3519.     int64_t pos = avio_tell(pb);

  3520.     int i, nb_chapters = FFMIN(s->nb_chapters, 255);

  3521. 

  3522.     avio_wb32(pb, 0);            // size

  3523.     ffio_wfourcc(pb, "chpl");

  3524.     avio_wb32(pb, 0x01000000);   // version + flags

  3525.     avio_wb32(pb, 0);            // unknown

  3526.     avio_w8(pb, nb_chapters);

  3527. 

  3528.     for (i = 0; i < nb_chapters; i++) {

  3529.         AVChapter *c = s->chapters[i];

  3530.         AVDictionaryEntry *t;

  3531.         avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));

  3532. 

  3533.         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {

  3534.             int len = FFMIN(strlen(t->value), 255);

  3535.             avio_w8(pb, len);

  3536.             avio_write(pb, t->value, len);

  3537.         } else

  3538.             avio_w8(pb, 0);

  3539.     }

  3540.     return update_size(pb, pos);

  3541. }

  3542. 

  3543. static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,

  3544.                               AVFormatContext *s)

  3545. {

  3546.     AVIOContext *pb_buf;

  3547.     int ret, size;

  3548.     uint8_t *buf;

  3549. 

  3550.     ret = avio_open_dyn_buf(&pb_buf);

  3551.     if (ret < 0)

  3552.         return ret;

  3553. 

  3554.     if (mov->mode & MODE_3GP) {

  3555.         mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");

  3556.         mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");

  3557.         mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");

  3558.         mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");

  3559.         mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");

  3560.         mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");

  3561.         mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");

  3562.         mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");

  3563.         mov_write_loci_tag(s, pb_buf);

  3564.     } else if (mov->mode == MODE_MOV && !(mov->flags & FF_MOV_FLAG_USE_MDTA)) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4

  3565.         mov_write_string_metadata(s, pb_buf, "\251ART", "artist",      0);

  3566.         mov_write_string_metadata(s, pb_buf, "\251nam", "title",       0);

  3567.         mov_write_string_metadata(s, pb_buf, "\251aut", "author",      0);

  3568.         mov_write_string_metadata(s, pb_buf, "\251alb", "album",       0);

  3569.         mov_write_string_metadata(s, pb_buf, "\251day", "date",        0);

  3570.         mov_write_string_metadata(s, pb_buf, "\251swr", "encoder",     0);

  3571.         // currently ignored by mov.c

  3572.         mov_write_string_metadata(s, pb_buf, "\251des", "comment",     0);

  3573.         // add support for libquicktime, this atom is also actually read by mov.c

  3574.         mov_write_string_metadata(s, pb_buf, "\251cmt", "comment",     0);

  3575.         mov_write_string_metadata(s, pb_buf, "\251gen", "genre",       0);

  3576.         mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright",   0);

  3577.         mov_write_string_metadata(s, pb_buf, "\251mak", "make",        0);

  3578.         mov_write_string_metadata(s, pb_buf, "\251mod", "model",       0);

  3579.         mov_write_string_metadata(s, pb_buf, "\251xyz", "location",    0);

  3580.         mov_write_string_metadata(s, pb_buf, "\251key", "keywords",    0);

  3581.         mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");

  3582.     } else {

  3583.         /* iTunes meta data */

  3584.         mov_write_meta_tag(pb_buf, mov, s);

  3585.         mov_write_loci_tag(s, pb_buf);

  3586.     }

  3587. 

  3588.     if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))

  3589.         mov_write_chpl_tag(pb_buf, s);

  3590. 

  3591.     if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {

  3592.         avio_wb32(pb, size + 8);

  3593.         ffio_wfourcc(pb, "udta");

  3594.         avio_write(pb, buf, size);

  3595.     }

  3596.     av_free(buf);

  3597. 

  3598.     return 0;

  3599. }

  3600. 

  3601. static void mov_write_psp_udta_tag(AVIOContext *pb,

  3602.                                    const char *str, const char *lang, int type)

  3603. {

  3604.     int len = utf8len(str) + 1;

  3605.     if (len <= 0)

  3606.         return;

  3607.     avio_wb16(pb, len * 2 + 10);        /* size */

  3608.     avio_wb32(pb, type);                /* type */

  3609.     avio_wb16(pb, language_code(lang)); /* language */

  3610.     avio_wb16(pb, 0x01);                /* ? */

  3611.     ascii_to_wc(pb, str);

  3612. }

  3613. 

  3614. static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)

  3615. {

  3616.     AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);

  3617.     int64_t pos, pos2;

  3618. 

  3619.     if (title) {

  3620.         pos = avio_tell(pb);

  3621.         avio_wb32(pb, 0); /* size placeholder*/

  3622.         ffio_wfourcc(pb, "uuid");

  3623.         ffio_wfourcc(pb, "USMT");

  3624.         avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */

  3625.         avio_wb32(pb, 0xbb88695c);

  3626.         avio_wb32(pb, 0xfac9c740);

  3627. 

  3628.         pos2 = avio_tell(pb);

  3629.         avio_wb32(pb, 0); /* size placeholder*/

  3630.         ffio_wfourcc(pb, "MTDT");

  3631.         avio_wb16(pb, 4);

  3632. 

  3633.         // ?

  3634.         avio_wb16(pb, 0x0C);                 /* size */

  3635.         avio_wb32(pb, 0x0B);                 /* type */

  3636.         avio_wb16(pb, language_code("und")); /* language */

  3637.         avio_wb16(pb, 0x0);                  /* ? */

  3638.         avio_wb16(pb, 0x021C);               /* data */

  3639. 

  3640.         if (!(s->flags & AVFMT_FLAG_BITEXACT))

  3641.             mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);

  3642.         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);

  3643.         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);

  3644. 

  3645.         update_size(pb, pos2);

  3646.         return update_size(pb, pos);

  3647.     }

  3648. 

  3649.     return 0;

  3650. }

  3651. 

  3652. static void build_chunks(MOVTrack *trk)

  3653. {

  3654.     int i;

  3655.     MOVIentry *chunk = &trk->cluster[0];

  3656.     uint64_t chunkSize = chunk->size;

  3657.     chunk->chunkNum = 1;

  3658.     if (trk->chunkCount)

  3659.         return;

  3660.     trk->chunkCount = 1;

  3661.     for (i = 1; i<trk->entry; i++){

  3662.         if (chunk->pos + chunkSize == trk->cluster[i].pos &&

  3663.             chunkSize + trk->cluster[i].size < (1<<20)){

  3664.             chunkSize             += trk->cluster[i].size;

  3665.             chunk->samples_in_chunk += trk->cluster[i].entries;

  3666.         } else {

  3667.             trk->cluster[i].chunkNum = chunk->chunkNum+1;

  3668.             chunk=&trk->cluster[i];

  3669.             chunkSize = chunk->size;

  3670.             trk->chunkCount++;

  3671.         }

  3672.     }

  3673. }

  3674. 

  3675. /**

  3676.  * Assign track ids. If option "use_stream_ids_as_track_ids" is set,

  3677.  * the stream ids are used as track ids.

  3678.  *

  3679.  * This assumes mov->tracks and s->streams are in the same order and

  3680.  * there are no gaps in either of them (so mov->tracks[n] refers to

  3681.  * s->streams[n]).

  3682.  *

  3683.  * As an exception, there can be more entries in

  3684.  * s->streams than in mov->tracks, in which case new track ids are

  3685.  * generated (starting after the largest found stream id).

  3686.  */

  3687. static int mov_setup_track_ids(MOVMuxContext *mov, AVFormatContext *s)

  3688. {

  3689.     int i;

  3690. 

  3691.     if (mov->track_ids_ok)

  3692.         return 0;

  3693. 

  3694.     if (mov->use_stream_ids_as_track_ids) {

  3695.         int next_generated_track_id = 0;

  3696.         for (i = 0; i < s->nb_streams; i++) {

  3697.             if (s->streams[i]->id > next_generated_track_id)

  3698.                 next_generated_track_id = s->streams[i]->id;

  3699.         }

  3700. 

  3701.         for (i = 0; i < mov->nb_streams; i++) {

  3702.             if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))

  3703.                 continue;

  3704. 

  3705.             mov->tracks[i].track_id = i >= s->nb_streams ? ++next_generated_track_id : s->streams[i]->id;

  3706.         }

  3707.     } else {

  3708.         for (i = 0; i < mov->nb_streams; i++) {

  3709.             if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))

  3710.                 continue;

  3711. 

  3712.             mov->tracks[i].track_id = i + 1;

  3713.         }

  3714.     }

  3715. 

  3716.     mov->track_ids_ok = 1;

  3717. 

  3718.     return 0;

  3719. }

  3720. 

  3721. static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,

  3722.                               AVFormatContext *s)

  3723. {

  3724.     int i;

  3725.     int64_t pos = avio_tell(pb);

  3726.     avio_wb32(pb, 0); /* size placeholder*/

  3727.     ffio_wfourcc(pb, "moov");

  3728. 

  3729.     mov_setup_track_ids(mov, s);

  3730. 

  3731.     for (i = 0; i < mov->nb_streams; i++) {

  3732.         if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))

  3733.             continue;

  3734. 

  3735.         mov->tracks[i].time     = mov->time;

  3736. 

  3737.         if (mov->tracks[i].entry)

  3738.             build_chunks(&mov->tracks[i]);

  3739.     }

  3740. 

  3741.     if (mov->chapter_track)

  3742.         for (i = 0; i < s->nb_streams; i++) {

  3743.             mov->tracks[i].tref_tag = MKTAG('c','h','a','p');

  3744.             mov->tracks[i].tref_id  = mov->tracks[mov->chapter_track].track_id;

  3745.         }

  3746.     for (i = 0; i < mov->nb_streams; i++) {

  3747.         MOVTrack *track = &mov->tracks[i];

  3748.         if (track->tag == MKTAG('r','t','p',' ')) {

  3749.             track->tref_tag = MKTAG('h','i','n','t');

  3750.             track->tref_id = mov->tracks[track->src_track].track_id;

  3751.         } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {

  3752.             int * fallback, size;

  3753.             fallback = (int*)av_stream_get_side_data(track->st,

  3754.                                                      AV_PKT_DATA_FALLBACK_TRACK,

  3755.                                                      &size);

  3756.             if (fallback != NULL && size == sizeof(int)) {

  3757.                 if (*fallback >= 0 && *fallback < mov->nb_streams) {

  3758.                     track->tref_tag = MKTAG('f','a','l','l');

  3759.                     track->tref_id = mov->tracks[*fallback].track_id;

  3760.                 }

  3761.             }

  3762.         }

  3763.     }

  3764.     for (i = 0; i < mov->nb_streams; i++) {

  3765.         if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {

  3766.             int src_trk = mov->tracks[i].src_track;

  3767.             mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;

  3768.             mov->tracks[src_trk].tref_id  = mov->tracks[i].track_id;

  3769.             //src_trk may have a different timescale than the tmcd track

  3770.             mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,

  3771.                                                        mov->tracks[i].timescale,

  3772.                                                        mov->tracks[src_trk].timescale);

  3773.         }

  3774.     }

  3775. 

  3776.     mov_write_mvhd_tag(pb, mov);

  3777.     if (mov->mode != MODE_MOV && !mov->iods_skip)

  3778.         mov_write_iods_tag(pb, mov);

  3779.     for (i = 0; i < mov->nb_streams; i++) {

  3780.         if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {

  3781.             int ret = mov_write_trak_tag(s, pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);

  3782.             if (ret < 0)

  3783.                 return ret;

  3784.         }

  3785.     }

  3786.     if (mov->flags & FF_MOV_FLAG_FRAGMENT)

  3787.         mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */

  3788. 

  3789.     if (mov->mode == MODE_PSP)

  3790.         mov_write_uuidusmt_tag(pb, s);

  3791.     else

  3792.         mov_write_udta_tag(pb, mov, s);

  3793. 

  3794.     return update_size(pb, pos);

  3795. }

  3796. 

  3797. static void param_write_int(AVIOContext *pb, const char *name, int value)

  3798. {

  3799.     avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);

  3800. }

  3801. 

  3802. static void param_write_string(AVIOContext *pb, const char *name, const char *value)

  3803. {

  3804.     avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);

  3805. }

  3806. 

  3807. static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)

  3808. {

  3809.     char buf[150];

  3810.     len = FFMIN(sizeof(buf) / 2 - 1, len);

  3811.     ff_data_to_hex(buf, value, len, 0);

  3812.     buf[2 * len] = '\0';

  3813.     avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);

  3814. }

  3815. 

  3816. static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)

  3817. {

  3818.     int64_t pos = avio_tell(pb);

  3819.     int i;

  3820.     int64_t manifest_bit_rate = 0;

  3821.     AVCPBProperties *props = NULL;

  3822. 

  3823.     static const uint8_t uuid[] = {

  3824.         0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,

  3825.         0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66

  3826.     };

  3827. 

  3828.     avio_wb32(pb, 0);

  3829.     ffio_wfourcc(pb, "uuid");

  3830.     avio_write(pb, uuid, sizeof(uuid));

  3831.     avio_wb32(pb, 0);

  3832. 

  3833.     avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");

  3834.     avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");

  3835.     avio_printf(pb, "<head>\n");

  3836.     if (!(mov->fc->flags & AVFMT_FLAG_BITEXACT))

  3837.         avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",

  3838.                     LIBAVFORMAT_IDENT);

  3839.     avio_printf(pb, "</head>\n");

  3840.     avio_printf(pb, "<body>\n");

  3841.     avio_printf(pb, "<switch>\n");

  3842. 

  3843.     mov_setup_track_ids(mov, s);

  3844. 

  3845.     for (i = 0; i < mov->nb_streams; i++) {

  3846.         MOVTrack *track = &mov->tracks[i];

  3847.         const char *type;

  3848.         int track_id = track->track_id;

  3849.         char track_name_buf[32] = { 0 };

  3850. 

  3851.         AVStream *st = track->st;

  3852.         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);

  3853. 

  3854.         if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  3855.             type = "video";

  3856.         } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {

  3857.             type = "audio";

  3858.         } else {

  3859.             continue;

  3860.         }

  3861. 

  3862.         props = (AVCPBProperties*)av_stream_get_side_data(track->st, AV_PKT_DATA_CPB_PROPERTIES, NULL);

  3863. 

  3864.         if (track->par->bit_rate) {

  3865.             manifest_bit_rate = track->par->bit_rate;

  3866.         } else if (props) {

  3867.             manifest_bit_rate = props->max_bitrate;

  3868.         }

  3869. 

  3870.         avio_printf(pb, "<%s systemBitrate=\"%"PRId64"\">\n", type,

  3871.                     manifest_bit_rate);

  3872.         param_write_int(pb, "systemBitrate", manifest_bit_rate);

  3873.         param_write_int(pb, "trackID", track_id);

  3874.         param_write_string(pb, "systemLanguage", lang ? lang->value : "und");

  3875. 

  3876.         /* Build track name piece by piece: */

  3877.         /* 1. track type */

  3878.         av_strlcat(track_name_buf, type, sizeof(track_name_buf));

  3879.         /* 2. track language, if available */

  3880.         if (lang)

  3881.             av_strlcatf(track_name_buf, sizeof(track_name_buf),

  3882.                         "_%s", lang->value);

  3883.         /* 3. special type suffix */

  3884.         /* "_cc" = closed captions, "_ad" = audio_description */

  3885.         if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)

  3886.             av_strlcat(track_name_buf, "_cc", sizeof(track_name_buf));

  3887.         else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)

  3888.             av_strlcat(track_name_buf, "_ad", sizeof(track_name_buf));

  3889. 

  3890.         param_write_string(pb, "trackName", track_name_buf);

  3891. 

  3892.         if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  3893.             if (track->par->codec_id == AV_CODEC_ID_H264) {

  3894.                 uint8_t *ptr;

  3895.                 int size = track->par->extradata_size;

  3896.                 if (!ff_avc_write_annexb_extradata(track->par->extradata, &ptr,

  3897.                                                    &size)) {

  3898.                     param_write_hex(pb, "CodecPrivateData",

  3899.                                     ptr ? ptr : track->par->extradata,

  3900.                                     size);

  3901.                     av_free(ptr);

  3902.                 }

  3903.                 param_write_string(pb, "FourCC", "H264");

  3904.             } else if (track->par->codec_id == AV_CODEC_ID_VC1) {

  3905.                 param_write_string(pb, "FourCC", "WVC1");

  3906.                 param_write_hex(pb, "CodecPrivateData", track->par->extradata,

  3907.                                 track->par->extradata_size);

  3908.             }

  3909.             param_write_int(pb, "MaxWidth", track->par->width);

  3910.             param_write_int(pb, "MaxHeight", track->par->height);

  3911.             param_write_int(pb, "DisplayWidth", track->par->width);

  3912.             param_write_int(pb, "DisplayHeight", track->par->height);

  3913.         } else {

  3914.             if (track->par->codec_id == AV_CODEC_ID_AAC) {

  3915.                 switch (track->par->profile)

  3916.                 {

  3917.                     case FF_PROFILE_AAC_HE_V2:

  3918.                         param_write_string(pb, "FourCC", "AACP");

  3919.                         break;

  3920.                     case FF_PROFILE_AAC_HE:

  3921.                         param_write_string(pb, "FourCC", "AACH");

  3922.                         break;

  3923.                     default:

  3924.                         param_write_string(pb, "FourCC", "AACL");

  3925.                 }

  3926.             } else if (track->par->codec_id == AV_CODEC_ID_WMAPRO) {

  3927.                 param_write_string(pb, "FourCC", "WMAP");

  3928.             }

  3929.             param_write_hex(pb, "CodecPrivateData", track->par->extradata,

  3930.                             track->par->extradata_size);

  3931.             param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,

  3932.                                                              track->par->codec_id));

  3933.             param_write_int(pb, "Channels", track->par->channels);

  3934.             param_write_int(pb, "SamplingRate", track->par->sample_rate);

  3935.             param_write_int(pb, "BitsPerSample", 16);

  3936.             param_write_int(pb, "PacketSize", track->par->block_align ?

  3937.                                               track->par->block_align : 4);

  3938.         }

  3939.         avio_printf(pb, "</%s>\n", type);

  3940.     }

  3941.     avio_printf(pb, "</switch>\n");

  3942.     avio_printf(pb, "</body>\n");

  3943.     avio_printf(pb, "</smil>\n");

  3944. 

  3945.     return update_size(pb, pos);

  3946. }

  3947. 

  3948. static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)

  3949. {

  3950.     avio_wb32(pb, 16);

  3951.     ffio_wfourcc(pb, "mfhd");

  3952.     avio_wb32(pb, 0);

  3953.     avio_wb32(pb, mov->fragments);

  3954.     return 0;

  3955. }

  3956. 

  3957. static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)

  3958. {

  3959.     return entry->flags & MOV_SYNC_SAMPLE ? MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO :

  3960.            (MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC);

  3961. }

  3962. 

  3963. static int mov_write_tfhd_tag(AVIOContext *pb, MOVMuxContext *mov,

  3964.                               MOVTrack *track, int64_t moof_offset)

  3965. {

  3966.     int64_t pos = avio_tell(pb);

  3967.     uint32_t flags = MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |

  3968.                      MOV_TFHD_BASE_DATA_OFFSET;

  3969.     if (!track->entry) {

  3970.         flags |= MOV_TFHD_DURATION_IS_EMPTY;

  3971.     } else {

  3972.         flags |= MOV_TFHD_DEFAULT_FLAGS;

  3973.     }

  3974.     if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET)

  3975.         flags &= ~MOV_TFHD_BASE_DATA_OFFSET;

  3976.     if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {

  3977.         flags &= ~MOV_TFHD_BASE_DATA_OFFSET;

  3978.         flags |= MOV_TFHD_DEFAULT_BASE_IS_MOOF;

  3979.     }

  3980. 

  3981.     /* Don't set a default sample size, the silverlight player refuses

  3982.      * to play files with that set. Don't set a default sample duration,

  3983.      * WMP freaks out if it is set. Don't set a base data offset, PIFF

  3984.      * file format says it MUST NOT be set. */

  3985.     if (track->mode == MODE_ISM)

  3986.         flags &= ~(MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |

  3987.                    MOV_TFHD_BASE_DATA_OFFSET);

  3988. 

  3989.     avio_wb32(pb, 0); /* size placeholder */

  3990.     ffio_wfourcc(pb, "tfhd");

  3991.     avio_w8(pb, 0); /* version */

  3992.     avio_wb24(pb, flags);

  3993. 

  3994.     avio_wb32(pb, track->track_id); /* track-id */

  3995.     if (flags & MOV_TFHD_BASE_DATA_OFFSET)

  3996.         avio_wb64(pb, moof_offset);

  3997.     if (flags & MOV_TFHD_DEFAULT_DURATION) {

  3998.         track->default_duration = get_cluster_duration(track, 0);

  3999.         avio_wb32(pb, track->default_duration);

  4000.     }

  4001.     if (flags & MOV_TFHD_DEFAULT_SIZE) {

  4002.         track->default_size = track->entry ? track->cluster[0].size : 1;

  4003.         avio_wb32(pb, track->default_size);

  4004.     } else

  4005.         track->default_size = -1;

  4006. 

  4007.     if (flags & MOV_TFHD_DEFAULT_FLAGS) {

  4008.         /* Set the default flags based on the second sample, if available.

  4009.          * If the first sample is different, that can be signaled via a separate field. */

  4010.         if (track->entry > 1)

  4011.             track->default_sample_flags = get_sample_flags(track, &track->cluster[1]);

  4012.         else

  4013.             track->default_sample_flags =

  4014.                 track->par->codec_type == AVMEDIA_TYPE_VIDEO ?

  4015.                 (MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC) :

  4016.                 MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO;

  4017.         avio_wb32(pb, track->default_sample_flags);

  4018.     }

  4019. 

  4020.     return update_size(pb, pos);

  4021. }

  4022. 

  4023. static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,

  4024.                               MOVTrack *track, int moof_size,

  4025.                               int first, int end)

  4026. {

  4027.     int64_t pos = avio_tell(pb);

  4028.     uint32_t flags = MOV_TRUN_DATA_OFFSET;

  4029.     int i;

  4030. 

  4031.     for (i = first; i < end; i++) {

  4032.         if (get_cluster_duration(track, i) != track->default_duration)

  4033.             flags |= MOV_TRUN_SAMPLE_DURATION;

  4034.         if (track->cluster[i].size != track->default_size)

  4035.             flags |= MOV_TRUN_SAMPLE_SIZE;

  4036.         if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)

  4037.             flags |= MOV_TRUN_SAMPLE_FLAGS;

  4038.     }

  4039.     if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&

  4040.          get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)

  4041.         flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;

  4042.     if (track->flags & MOV_TRACK_CTTS)

  4043.         flags |= MOV_TRUN_SAMPLE_CTS;

  4044. 

  4045.     avio_wb32(pb, 0); /* size placeholder */

  4046.     ffio_wfourcc(pb, "trun");

  4047.     avio_w8(pb, 0); /* version */

  4048.     avio_wb24(pb, flags);

  4049. 

  4050.     avio_wb32(pb, end - first); /* sample count */

  4051.     if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&

  4052.         !(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) &&

  4053.         !mov->first_trun)

  4054.         avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */

  4055.     else

  4056.         avio_wb32(pb, moof_size + 8 + track->data_offset +

  4057.                       track->cluster[first].pos); /* data offset */

  4058.     if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)

  4059.         avio_wb32(pb, get_sample_flags(track, &track->cluster[first]));

  4060. 

  4061.     for (i = first; i < end; i++) {

  4062.         if (flags & MOV_TRUN_SAMPLE_DURATION)

  4063.             avio_wb32(pb, get_cluster_duration(track, i));

  4064.         if (flags & MOV_TRUN_SAMPLE_SIZE)

  4065.             avio_wb32(pb, track->cluster[i].size);

  4066.         if (flags & MOV_TRUN_SAMPLE_FLAGS)

  4067.             avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));

  4068.         if (flags & MOV_TRUN_SAMPLE_CTS)

  4069.             avio_wb32(pb, track->cluster[i].cts);

  4070.     }

  4071. 

  4072.     mov->first_trun = 0;

  4073.     return update_size(pb, pos);

  4074. }

  4075. 

  4076. static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)

  4077. {

  4078.     int64_t pos = avio_tell(pb);

  4079.     static const uint8_t uuid[] = {

  4080.         0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,

  4081.         0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2

  4082.     };

  4083. 

  4084.     avio_wb32(pb, 0); /* size placeholder */

  4085.     ffio_wfourcc(pb, "uuid");

  4086.     avio_write(pb, uuid, sizeof(uuid));

  4087.     avio_w8(pb, 1);

  4088.     avio_wb24(pb, 0);

  4089.     avio_wb64(pb, track->start_dts + track->frag_start +

  4090.                   track->cluster[0].cts);

  4091.     avio_wb64(pb, track->end_pts -

  4092.                   (track->cluster[0].dts + track->cluster[0].cts));

  4093. 

  4094.     return update_size(pb, pos);

  4095. }

  4096. 

  4097. static int mov_write_tfrf_tag(AVIOContext *pb, MOVMuxContext *mov,

  4098.                               MOVTrack *track, int entry)

  4099. {

  4100.     int n = track->nb_frag_info - 1 - entry, i;

  4101.     int size = 8 + 16 + 4 + 1 + 16*n;

  4102.     static const uint8_t uuid[] = {

  4103.         0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,

  4104.         0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f

  4105.     };

  4106. 

  4107.     if (entry < 0)

  4108.         return 0;

  4109. 

  4110.     avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);

  4111.     avio_wb32(pb, size);

  4112.     ffio_wfourcc(pb, "uuid");

  4113.     avio_write(pb, uuid, sizeof(uuid));

  4114.     avio_w8(pb, 1);

  4115.     avio_wb24(pb, 0);

  4116.     avio_w8(pb, n);

  4117.     for (i = 0; i < n; i++) {

  4118.         int index = entry + 1 + i;

  4119.         avio_wb64(pb, track->frag_info[index].time);

  4120.         avio_wb64(pb, track->frag_info[index].duration);

  4121.     }

  4122.     if (n < mov->ism_lookahead) {

  4123.         int free_size = 16 * (mov->ism_lookahead - n);

  4124.         avio_wb32(pb, free_size);

  4125.         ffio_wfourcc(pb, "free");

  4126.         ffio_fill(pb, 0, free_size - 8);

  4127.     }

  4128. 

  4129.     return 0;

  4130. }

  4131. 

  4132. static int mov_write_tfrf_tags(AVIOContext *pb, MOVMuxContext *mov,

  4133.                                MOVTrack *track)

  4134. {

  4135.     int64_t pos = avio_tell(pb);

  4136.     int i;

  4137.     for (i = 0; i < mov->ism_lookahead; i++) {

  4138.         /* Update the tfrf tag for the last ism_lookahead fragments,

  4139.          * nb_frag_info - 1 is the next fragment to be written. */

  4140.         mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);

  4141.     }

  4142.     avio_seek(pb, pos, SEEK_SET);

  4143.     return 0;

  4144. }

  4145. 

  4146. static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,

  4147.                                 int size)

  4148. {

  4149.     int i;

  4150.     for (i = 0; i < mov->nb_streams; i++) {

  4151.         MOVTrack *track = &mov->tracks[i];

  4152.         MOVFragmentInfo *info;

  4153.         if ((tracks >= 0 && i != tracks) || !track->entry)

  4154.             continue;

  4155.         track->nb_frag_info++;

  4156.         if (track->nb_frag_info >= track->frag_info_capacity) {

  4157.             unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;

  4158.             if (av_reallocp_array(&track->frag_info,

  4159.                                   new_capacity,

  4160.                                   sizeof(*track->frag_info)))

  4161.                 return AVERROR(ENOMEM);

  4162.             track->frag_info_capacity = new_capacity;

  4163.         }

  4164.         info = &track->frag_info[track->nb_frag_info - 1];

  4165.         info->offset   = avio_tell(pb);

  4166.         info->size     = size;

  4167.         // Try to recreate the original pts for the first packet

  4168.         // from the fields we have stored

  4169.         info->time     = track->start_dts + track->frag_start +

  4170.                          track->cluster[0].cts;

  4171.         info->duration = track->end_pts -

  4172.                          (track->cluster[0].dts + track->cluster[0].cts);

  4173.         // If the pts is less than zero, we will have trimmed

  4174.         // away parts of the media track using an edit list,

  4175.         // and the corresponding start presentation time is zero.

  4176.         if (info->time < 0) {

  4177.             info->duration += info->time;

  4178.             info->time = 0;

  4179.         }

  4180.         info->tfrf_offset = 0;

  4181.         mov_write_tfrf_tags(pb, mov, track);

  4182.     }

  4183.     return 0;

  4184. }

  4185. 

  4186. static void mov_prune_frag_info(MOVMuxContext *mov, int tracks, int max)

  4187. {

  4188.     int i;

  4189.     for (i = 0; i < mov->nb_streams; i++) {

  4190.         MOVTrack *track = &mov->tracks[i];

  4191.         if ((tracks >= 0 && i != tracks) || !track->entry)

  4192.             continue;

  4193.         if (track->nb_frag_info > max) {

  4194.             memmove(track->frag_info, track->frag_info + (track->nb_frag_info - max), max * sizeof(*track->frag_info));

  4195.             track->nb_frag_info = max;

  4196.         }

  4197.     }

  4198. }

  4199. 

  4200. static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)

  4201. {

  4202.     int64_t pos = avio_tell(pb);

  4203. 

  4204.     avio_wb32(pb, 0); /* size */

  4205.     ffio_wfourcc(pb, "tfdt");

  4206.     avio_w8(pb, 1); /* version */

  4207.     avio_wb24(pb, 0);

  4208.     avio_wb64(pb, track->frag_start);

  4209.     return update_size(pb, pos);

  4210. }

  4211. 

  4212. static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,

  4213.                               MOVTrack *track, int64_t moof_offset,

  4214.                               int moof_size)

  4215. {

  4216.     int64_t pos = avio_tell(pb);

  4217.     int i, start = 0;

  4218.     avio_wb32(pb, 0); /* size placeholder */

  4219.     ffio_wfourcc(pb, "traf");

  4220. 

  4221.     mov_write_tfhd_tag(pb, mov, track, moof_offset);

  4222.     if (mov->mode != MODE_ISM)

  4223.         mov_write_tfdt_tag(pb, track);

  4224.     for (i = 1; i < track->entry; i++) {

  4225.         if (track->cluster[i].pos != track->cluster[i - 1].pos + track->cluster[i - 1].size) {

  4226.             mov_write_trun_tag(pb, mov, track, moof_size, start, i);

  4227.             start = i;

  4228.         }

  4229.     }

  4230.     mov_write_trun_tag(pb, mov, track, moof_size, start, track->entry);

  4231.     if (mov->mode == MODE_ISM) {

  4232.         mov_write_tfxd_tag(pb, track);

  4233. 

  4234.         if (mov->ism_lookahead) {

  4235.             int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;

  4236. 

  4237.             if (track->nb_frag_info > 0) {

  4238.                 MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];

  4239.                 if (!info->tfrf_offset)

  4240.                     info->tfrf_offset = avio_tell(pb);

  4241.             }

  4242.             avio_wb32(pb, 8 + size);

  4243.             ffio_wfourcc(pb, "free");

  4244.             for (i = 0; i < size; i++)

  4245.                 avio_w8(pb, 0);

  4246.         }

  4247.     }

  4248. 

  4249.     return update_size(pb, pos);

  4250. }

  4251. 

  4252. static int mov_write_moof_tag_internal(AVIOContext *pb, MOVMuxContext *mov,

  4253.                                        int tracks, int moof_size)

  4254. {

  4255.     int64_t pos = avio_tell(pb);

  4256.     int i;

  4257. 

  4258.     avio_wb32(pb, 0); /* size placeholder */

  4259.     ffio_wfourcc(pb, "moof");

  4260.     mov->first_trun = 1;

  4261. 

  4262.     mov_write_mfhd_tag(pb, mov);

  4263.     for (i = 0; i < mov->nb_streams; i++) {

  4264.         MOVTrack *track = &mov->tracks[i];

  4265.         if (tracks >= 0 && i != tracks)

  4266.             continue;

  4267.         if (!track->entry)

  4268.             continue;

  4269.         mov_write_traf_tag(pb, mov, track, pos, moof_size);

  4270.     }

  4271. 

  4272.     return update_size(pb, pos);

  4273. }

  4274. 

  4275. static int mov_write_sidx_tag(AVIOContext *pb,

  4276.                               MOVTrack *track, int ref_size, int total_sidx_size)

  4277. {

  4278.     int64_t pos = avio_tell(pb), offset_pos, end_pos;

  4279.     int64_t presentation_time, duration, offset;

  4280.     int starts_with_SAP, i, entries;

  4281. 

  4282.     if (track->entry) {

  4283.         entries = 1;

  4284.         presentation_time = track->start_dts + track->frag_start +

  4285.                             track->cluster[0].cts;

  4286.         duration = track->end_pts -

  4287.                    (track->cluster[0].dts + track->cluster[0].cts);

  4288.         starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;

  4289. 

  4290.         // pts<0 should be cut away using edts

  4291.         if (presentation_time < 0) {

  4292.             duration += presentation_time;

  4293.             presentation_time = 0;

  4294.         }

  4295.     } else {

  4296.         entries = track->nb_frag_info;

  4297.         if (entries <= 0)

  4298.             return 0;

  4299.         presentation_time = track->frag_info[0].time;

  4300.     }

  4301. 

  4302.     avio_wb32(pb, 0); /* size */

  4303.     ffio_wfourcc(pb, "sidx");

  4304.     avio_w8(pb, 1); /* version */

  4305.     avio_wb24(pb, 0);

  4306.     avio_wb32(pb, track->track_id); /* reference_ID */

  4307.     avio_wb32(pb, track->timescale); /* timescale */

  4308.     avio_wb64(pb, presentation_time); /* earliest_presentation_time */

  4309.     offset_pos = avio_tell(pb);

  4310.     avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */

  4311.     avio_wb16(pb, 0); /* reserved */

  4312. 

  4313.     avio_wb16(pb, entries); /* reference_count */

  4314.     for (i = 0; i < entries; i++) {

  4315.         if (!track->entry) {

  4316.             if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {

  4317.                av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");

  4318.             }

  4319.             duration = track->frag_info[i].duration;

  4320.             ref_size = track->frag_info[i].size;

  4321.             starts_with_SAP = 1;

  4322.         }

  4323.         avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */

  4324.         avio_wb32(pb, duration); /* subsegment_duration */

  4325.         avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */

  4326.     }

  4327. 

  4328.     end_pos = avio_tell(pb);

  4329.     offset = pos + total_sidx_size - end_pos;

  4330.     avio_seek(pb, offset_pos, SEEK_SET);

  4331.     avio_wb64(pb, offset);

  4332.     avio_seek(pb, end_pos, SEEK_SET);

  4333.     return update_size(pb, pos);

  4334. }

  4335. 

  4336. static int mov_write_sidx_tags(AVIOContext *pb, MOVMuxContext *mov,

  4337.                                int tracks, int ref_size)

  4338. {

  4339.     int i, round, ret;

  4340.     AVIOContext *avio_buf;

  4341.     int total_size = 0;

  4342.     for (round = 0; round < 2; round++) {

  4343.         // First run one round to calculate the total size of all

  4344.         // sidx atoms.

  4345.         // This would be much simpler if we'd only write one sidx

  4346.         // atom, for the first track in the moof.

  4347.         if (round == 0) {

  4348.             if ((ret = ffio_open_null_buf(&avio_buf)) < 0)

  4349.                 return ret;

  4350.         } else {

  4351.             avio_buf = pb;

  4352.         }

  4353.         for (i = 0; i < mov->nb_streams; i++) {

  4354.             MOVTrack *track = &mov->tracks[i];

  4355.             if (tracks >= 0 && i != tracks)

  4356.                 continue;

  4357.             // When writing a sidx for the full file, entry is 0, but

  4358.             // we want to include all tracks. ref_size is 0 in this case,

  4359.             // since we read it from frag_info instead.

  4360.             if (!track->entry && ref_size > 0)

  4361.                 continue;

  4362.             total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,

  4363.                                              total_size);

  4364.         }

  4365.         if (round == 0)

  4366.             total_size = ffio_close_null_buf(avio_buf);

  4367.     }

  4368.     return 0;

  4369. }

  4370. 

  4371. static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,

  4372.                               int64_t mdat_size)

  4373. {

  4374.     AVIOContext *avio_buf;

  4375.     int ret, moof_size;

  4376. 

  4377.     if ((ret = ffio_open_null_buf(&avio_buf)) < 0)

  4378.         return ret;

  4379.     mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);

  4380.     moof_size = ffio_close_null_buf(avio_buf);

  4381. 

  4382.     if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX))

  4383.         mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);

  4384. 

  4385.     if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX ||

  4386.         !(mov->flags & FF_MOV_FLAG_SKIP_TRAILER) ||

  4387.         mov->ism_lookahead) {

  4388.         if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)

  4389.             return ret;

  4390.         if (!(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX) &&

  4391.             mov->flags & FF_MOV_FLAG_SKIP_TRAILER) {

  4392.             mov_prune_frag_info(mov, tracks, mov->ism_lookahead + 1);

  4393.         }

  4394.     }

  4395. 

  4396.     return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);

  4397. }

  4398. 

  4399. static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)

  4400. {

  4401.     int64_t pos = avio_tell(pb);

  4402.     int i;

  4403. 

  4404.     avio_wb32(pb, 0); /* size placeholder */

  4405.     ffio_wfourcc(pb, "tfra");

  4406.     avio_w8(pb, 1); /* version */

  4407.     avio_wb24(pb, 0);

  4408. 

  4409.     avio_wb32(pb, track->track_id);

  4410.     avio_wb32(pb, 0); /* length of traf/trun/sample num */

  4411.     avio_wb32(pb, track->nb_frag_info);

  4412.     for (i = 0; i < track->nb_frag_info; i++) {

  4413.         avio_wb64(pb, track->frag_info[i].time);

  4414.         avio_wb64(pb, track->frag_info[i].offset + track->data_offset);

  4415.         avio_w8(pb, 1); /* traf number */

  4416.         avio_w8(pb, 1); /* trun number */

  4417.         avio_w8(pb, 1); /* sample number */

  4418.     }

  4419. 

  4420.     return update_size(pb, pos);

  4421. }

  4422. 

  4423. static int mov_write_mfra_tag(AVIOContext *pb, MOVMuxContext *mov)

  4424. {

  4425.     int64_t pos = avio_tell(pb);

  4426.     int i;

  4427. 

  4428.     avio_wb32(pb, 0); /* size placeholder */

  4429.     ffio_wfourcc(pb, "mfra");

  4430.     /* An empty mfra atom is enough to indicate to the publishing point that

  4431.      * the stream has ended. */

  4432.     if (mov->flags & FF_MOV_FLAG_ISML)

  4433.         return update_size(pb, pos);

  4434. 

  4435.     for (i = 0; i < mov->nb_streams; i++) {

  4436.         MOVTrack *track = &mov->tracks[i];

  4437.         if (track->nb_frag_info)

  4438.             mov_write_tfra_tag(pb, track);

  4439.     }

  4440. 

  4441.     avio_wb32(pb, 16);

  4442.     ffio_wfourcc(pb, "mfro");

  4443.     avio_wb32(pb, 0); /* version + flags */

  4444.     avio_wb32(pb, avio_tell(pb) + 4 - pos);

  4445. 

  4446.     return update_size(pb, pos);

  4447. }

  4448. 

  4449. static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)

  4450. {

  4451.     avio_wb32(pb, 8);    // placeholder for extended size field (64 bit)

  4452.     ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");

  4453. 

  4454.     mov->mdat_pos = avio_tell(pb);

  4455.     avio_wb32(pb, 0); /* size placeholder*/

  4456.     ffio_wfourcc(pb, "mdat");

  4457.     return 0;

  4458. }

  4459. 

  4460. /* TODO: This needs to be more general */

  4461. static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)

  4462. {

  4463.     MOVMuxContext *mov = s->priv_data;

  4464.     int64_t pos = avio_tell(pb);

  4465.     int has_h264 = 0, has_video = 0;

  4466.     int minor = 0x200;

  4467.     int i;

  4468. 

  4469.     for (i = 0; i < s->nb_streams; i++) {

  4470.         AVStream *st = s->streams[i];

  4471.         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)

  4472.             has_video = 1;

  4473.         if (st->codecpar->codec_id == AV_CODEC_ID_H264)

  4474.             has_h264 = 1;

  4475.     }

  4476. 

  4477.     avio_wb32(pb, 0); /* size */

  4478.     ffio_wfourcc(pb, "ftyp");

  4479. 

  4480.     if (mov->major_brand && strlen(mov->major_brand) >= 4)

  4481.         ffio_wfourcc(pb, mov->major_brand);

  4482.     else if (mov->mode == MODE_3GP) {

  4483.         ffio_wfourcc(pb, has_h264 ? "3gp6"  : "3gp4");

  4484.         minor =     has_h264 ?   0x100 :   0x200;

  4485.     } else if (mov->mode & MODE_3G2) {

  4486.         ffio_wfourcc(pb, has_h264 ? "3g2b"  : "3g2a");

  4487.         minor =     has_h264 ? 0x20000 : 0x10000;

  4488.     } else if (mov->mode == MODE_PSP)

  4489.         ffio_wfourcc(pb, "MSNV");

  4490.     else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)

  4491.         ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof

  4492.     else if (mov->mode == MODE_MP4)

  4493.         ffio_wfourcc(pb, "isom");

  4494.     else if (mov->mode == MODE_IPOD)

  4495.         ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");

  4496.     else if (mov->mode == MODE_ISM)

  4497.         ffio_wfourcc(pb, "isml");

  4498.     else if (mov->mode == MODE_F4V)

  4499.         ffio_wfourcc(pb, "f4v ");

  4500.     else

  4501.         ffio_wfourcc(pb, "qt  ");

  4502. 

  4503.     avio_wb32(pb, minor);

  4504. 

  4505.     if (mov->mode == MODE_MOV)

  4506.         ffio_wfourcc(pb, "qt  ");

  4507.     else if (mov->mode == MODE_ISM) {

  4508.         ffio_wfourcc(pb, "piff");

  4509.     } else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {

  4510.         ffio_wfourcc(pb, "isom");

  4511.         ffio_wfourcc(pb, "iso2");

  4512.         if (has_h264)

  4513.             ffio_wfourcc(pb, "avc1");

  4514.     }

  4515. 

  4516.     // We add tfdt atoms when fragmenting, signal this with the iso6 compatible

  4517.     // brand. This is compatible with users that don't understand tfdt.

  4518.     if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)

  4519.         ffio_wfourcc(pb, "iso6");

  4520. 

  4521.     if (mov->mode == MODE_3GP)

  4522.         ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");

  4523.     else if (mov->mode & MODE_3G2)

  4524.         ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");

  4525.     else if (mov->mode == MODE_PSP)

  4526.         ffio_wfourcc(pb, "MSNV");

  4527.     else if (mov->mode == MODE_MP4)

  4528.         ffio_wfourcc(pb, "mp41");

  4529. 

  4530.     if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)

  4531.         ffio_wfourcc(pb, "dash");

  4532. 

  4533.     return update_size(pb, pos);

  4534. }

  4535. 

  4536. static int mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)

  4537. {

  4538.     AVStream       *video_st    = s->streams[0];

  4539.     AVCodecParameters *video_par = s->streams[0]->codecpar;

  4540.     AVCodecParameters *audio_par = s->streams[1]->codecpar;

  4541.     int audio_rate = audio_par->sample_rate;

  4542.     int64_t frame_rate = video_st->avg_frame_rate.den ?

  4543.                         (video_st->avg_frame_rate.num * 0x10000LL) / video_st->avg_frame_rate.den :

  4544.                         0;

  4545.     int audio_kbitrate = audio_par->bit_rate / 1000;

  4546.     int video_kbitrate = FFMIN(video_par->bit_rate / 1000, 800 - audio_kbitrate);

  4547. 

  4548.     if (frame_rate < 0 || frame_rate > INT32_MAX) {

  4549.         av_log(s, AV_LOG_ERROR, "Frame rate %f outside supported range\n", frame_rate / (double)0x10000);

  4550.         return AVERROR(EINVAL);

  4551.     }

  4552. 

  4553.     avio_wb32(pb, 0x94); /* size */

  4554.     ffio_wfourcc(pb, "uuid");

  4555.     ffio_wfourcc(pb, "PROF");

  4556. 

  4557.     avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */

  4558.     avio_wb32(pb, 0xbb88695c);

  4559.     avio_wb32(pb, 0xfac9c740);

  4560. 

  4561.     avio_wb32(pb, 0x0);  /* ? */

  4562.     avio_wb32(pb, 0x3);  /* 3 sections ? */

  4563. 

  4564.     avio_wb32(pb, 0x14); /* size */

  4565.     ffio_wfourcc(pb, "FPRF");

  4566.     avio_wb32(pb, 0x0);  /* ? */

  4567.     avio_wb32(pb, 0x0);  /* ? */

  4568.     avio_wb32(pb, 0x0);  /* ? */

  4569. 

  4570.     avio_wb32(pb, 0x2c);  /* size */

  4571.     ffio_wfourcc(pb, "APRF"); /* audio */

  4572.     avio_wb32(pb, 0x0);

  4573.     avio_wb32(pb, 0x2);   /* TrackID */

  4574.     ffio_wfourcc(pb, "mp4a");

  4575.     avio_wb32(pb, 0x20f);

  4576.     avio_wb32(pb, 0x0);

  4577.     avio_wb32(pb, audio_kbitrate);

  4578.     avio_wb32(pb, audio_kbitrate);

  4579.     avio_wb32(pb, audio_rate);

  4580.     avio_wb32(pb, audio_par->channels);

  4581. 

  4582.     avio_wb32(pb, 0x34);  /* size */

  4583.     ffio_wfourcc(pb, "VPRF");   /* video */

  4584.     avio_wb32(pb, 0x0);

  4585.     avio_wb32(pb, 0x1);    /* TrackID */

  4586.     if (video_par->codec_id == AV_CODEC_ID_H264) {

  4587.         ffio_wfourcc(pb, "avc1");

  4588.         avio_wb16(pb, 0x014D);

  4589.         avio_wb16(pb, 0x0015);

  4590.     } else {

  4591.         ffio_wfourcc(pb, "mp4v");

  4592.         avio_wb16(pb, 0x0000);

  4593.         avio_wb16(pb, 0x0103);

  4594.     }

  4595.     avio_wb32(pb, 0x0);

  4596.     avio_wb32(pb, video_kbitrate);

  4597.     avio_wb32(pb, video_kbitrate);

  4598.     avio_wb32(pb, frame_rate);

  4599.     avio_wb32(pb, frame_rate);

  4600.     avio_wb16(pb, video_par->width);

  4601.     avio_wb16(pb, video_par->height);

  4602.     avio_wb32(pb, 0x010001); /* ? */

  4603. 

  4604.     return 0;

  4605. }

  4606. 

  4607. static int mov_write_identification(AVIOContext *pb, AVFormatContext *s)

  4608. {

  4609.     MOVMuxContext *mov = s->priv_data;

  4610.     int i;

  4611. 

  4612.     mov_write_ftyp_tag(pb,s);

  4613.     if (mov->mode == MODE_PSP) {

  4614.         int video_streams_nb = 0, audio_streams_nb = 0, other_streams_nb = 0;

  4615.         for (i = 0; i < s->nb_streams; i++) {

  4616.             AVStream *st = s->streams[i];

  4617.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)

  4618.                 video_streams_nb++;

  4619.             else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)

  4620.                 audio_streams_nb++;

  4621.             else

  4622.                 other_streams_nb++;

  4623.             }

  4624. 

  4625.         if (video_streams_nb != 1 || audio_streams_nb != 1 || other_streams_nb) {

  4626.             av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");

  4627.             return AVERROR(EINVAL);

  4628.         }

  4629.         return mov_write_uuidprof_tag(pb, s);

  4630.     }

  4631.     return 0;

  4632. }

  4633. 

  4634. static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)

  4635. {

  4636.     uint32_t c = -1;

  4637.     int i, closed_gop = 0;

  4638. 

  4639.     for (i = 0; i < pkt->size - 4; i++) {

  4640.         c = (c << 8) + pkt->data[i];

  4641.         if (c == 0x1b8) { // gop

  4642.             closed_gop = pkt->data[i + 4] >> 6 & 0x01;

  4643.         } else if (c == 0x100) { // pic

  4644.             int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);

  4645.             if (!temp_ref || closed_gop) // I picture is not reordered

  4646.                 *flags = MOV_SYNC_SAMPLE;

  4647.             else

  4648.                 *flags = MOV_PARTIAL_SYNC_SAMPLE;

  4649.             break;

  4650.         }

  4651.     }

  4652.     return 0;

  4653. }

  4654. 

  4655. static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk)

  4656. {

  4657.     const uint8_t *start, *next, *end = pkt->data + pkt->size;

  4658.     int seq = 0, entry = 0;

  4659.     int key = pkt->flags & AV_PKT_FLAG_KEY;

  4660.     start = find_next_marker(pkt->data, end);

  4661.     for (next = start; next < end; start = next) {

  4662.         next = find_next_marker(start + 4, end);

  4663.         switch (AV_RB32(start)) {

  4664.         case VC1_CODE_SEQHDR:

  4665.             seq = 1;

  4666.             break;

  4667.         case VC1_CODE_ENTRYPOINT:

  4668.             entry = 1;

  4669.             break;

  4670.         case VC1_CODE_SLICE:

  4671.             trk->vc1_info.slices = 1;

  4672.             break;

  4673.         }

  4674.     }

  4675.     if (!trk->entry && trk->vc1_info.first_packet_seen)

  4676.         trk->vc1_info.first_frag_written = 1;

  4677.     if (!trk->entry && !trk->vc1_info.first_frag_written) {

  4678.         /* First packet in first fragment */

  4679.         trk->vc1_info.first_packet_seq   = seq;

  4680.         trk->vc1_info.first_packet_entry = entry;

  4681.         trk->vc1_info.first_packet_seen  = 1;

  4682.     } else if ((seq && !trk->vc1_info.packet_seq) ||

  4683.                (entry && !trk->vc1_info.packet_entry)) {

  4684.         int i;

  4685.         for (i = 0; i < trk->entry; i++)

  4686.             trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;

  4687.         trk->has_keyframes = 0;

  4688.         if (seq)

  4689.             trk->vc1_info.packet_seq = 1;

  4690.         if (entry)

  4691.             trk->vc1_info.packet_entry = 1;

  4692.         if (!trk->vc1_info.first_frag_written) {

  4693.             /* First fragment */

  4694.             if ((!seq   || trk->vc1_info.first_packet_seq) &&

  4695.                 (!entry || trk->vc1_info.first_packet_entry)) {

  4696.                 /* First packet had the same headers as this one, readd the

  4697.                  * sync sample flag. */

  4698.                 trk->cluster[0].flags |= MOV_SYNC_SAMPLE;

  4699.                 trk->has_keyframes = 1;

  4700.             }

  4701.         }

  4702.     }

  4703.     if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)

  4704.         key = seq && entry;

  4705.     else if (trk->vc1_info.packet_seq)

  4706.         key = seq;

  4707.     else if (trk->vc1_info.packet_entry)

  4708.         key = entry;

  4709.     if (key) {

  4710.         trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;

  4711.         trk->has_keyframes++;

  4712.     }

  4713. }

  4714. 

  4715. static int mov_flush_fragment_interleaving(AVFormatContext *s, MOVTrack *track)

  4716. {

  4717.     MOVMuxContext *mov = s->priv_data;

  4718.     int ret, buf_size;

  4719.     uint8_t *buf;

  4720.     int i, offset;

  4721. 

  4722.     if (!track->mdat_buf)

  4723.         return 0;

  4724.     if (!mov->mdat_buf) {

  4725.         if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)

  4726.             return ret;

  4727.     }

  4728.     buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);

  4729.     track->mdat_buf = NULL;

  4730. 

  4731.     offset = avio_tell(mov->mdat_buf);

  4732.     avio_write(mov->mdat_buf, buf, buf_size);

  4733.     av_free(buf);

  4734. 

  4735.     for (i = track->entries_flushed; i < track->entry; i++)

  4736.         track->cluster[i].pos += offset;

  4737.     track->entries_flushed = track->entry;

  4738.     return 0;

  4739. }

  4740. 

  4741. static int mov_flush_fragment(AVFormatContext *s, int force)

  4742. {

  4743.     MOVMuxContext *mov = s->priv_data;

  4744.     int i, first_track = -1;

  4745.     int64_t mdat_size = 0;

  4746.     int ret;

  4747.     int has_video = 0, starts_with_key = 0, first_video_track = 1;

  4748. 

  4749.     if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))

  4750.         return 0;

  4751. 

  4752.     // Try to fill in the duration of the last packet in each stream

  4753.     // from queued packets in the interleave queues. If the flushing

  4754.     // of fragments was triggered automatically by an AVPacket, we

  4755.     // already have reliable info for the end of that track, but other

  4756.     // tracks may need to be filled in.

  4757.     for (i = 0; i < s->nb_streams; i++) {

  4758.         MOVTrack *track = &mov->tracks[i];

  4759.         if (!track->end_reliable) {

  4760.             AVPacket pkt;

  4761.             if (!ff_interleaved_peek(s, i, &pkt, 1)) {

  4762.                 track->track_duration = pkt.dts - track->start_dts;

  4763.                 if (pkt.pts != AV_NOPTS_VALUE)

  4764.                     track->end_pts = pkt.pts;

  4765.                 else

  4766.                     track->end_pts = pkt.dts;

  4767.             }

  4768.         }

  4769.     }

  4770. 

  4771.     for (i = 0; i < mov->nb_streams; i++) {

  4772.         MOVTrack *track = &mov->tracks[i];

  4773.         if (track->entry <= 1)

  4774.             continue;

  4775.         // Sample durations are calculated as the diff of dts values,

  4776.         // but for the last sample in a fragment, we don't know the dts

  4777.         // of the first sample in the next fragment, so we have to rely

  4778.         // on what was set as duration in the AVPacket. Not all callers

  4779.         // set this though, so we might want to replace it with an

  4780.         // estimate if it currently is zero.

  4781.         if (get_cluster_duration(track, track->entry - 1) != 0)

  4782.             continue;

  4783.         // Use the duration (i.e. dts diff) of the second last sample for

  4784.         // the last one. This is a wild guess (and fatal if it turns out

  4785.         // to be too long), but probably the best we can do - having a zero

  4786.         // duration is bad as well.

  4787.         track->track_duration += get_cluster_duration(track, track->entry - 2);

  4788.         track->end_pts        += get_cluster_duration(track, track->entry - 2);

  4789.         if (!mov->missing_duration_warned) {

  4790.             av_log(s, AV_LOG_WARNING,

  4791.                    "Estimating the duration of the last packet in a "

  4792.                    "fragment, consider setting the duration field in "

  4793.                    "AVPacket instead.\n");

  4794.             mov->missing_duration_warned = 1;

  4795.         }

  4796.     }

  4797. 

  4798.     if (!mov->moov_written) {

  4799.         int64_t pos = avio_tell(s->pb);

  4800.         uint8_t *buf;

  4801.         int buf_size, moov_size;

  4802. 

  4803.         for (i = 0; i < mov->nb_streams; i++)

  4804.             if (!mov->tracks[i].entry)

  4805.                 break;

  4806.         /* Don't write the initial moov unless all tracks have data */

  4807.         if (i < mov->nb_streams && !force)

  4808.             return 0;

  4809. 

  4810.         moov_size = get_moov_size(s);

  4811.         for (i = 0; i < mov->nb_streams; i++)

  4812.             mov->tracks[i].data_offset = pos + moov_size + 8;

  4813. 

  4814.         avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);

  4815.         if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)

  4816.             mov_write_identification(s->pb, s);

  4817.         if ((ret = mov_write_moov_tag(s->pb, mov, s)) < 0)

  4818.             return ret;

  4819. 

  4820.         if (mov->flags & FF_MOV_FLAG_DELAY_MOOV) {

  4821.             if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)

  4822.                 mov->reserved_header_pos = avio_tell(s->pb);

  4823.             avio_flush(s->pb);

  4824.             mov->moov_written = 1;

  4825.             return 0;

  4826.         }

  4827. 

  4828.         buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);

  4829.         mov->mdat_buf = NULL;

  4830.         avio_wb32(s->pb, buf_size + 8);

  4831.         ffio_wfourcc(s->pb, "mdat");

  4832.         avio_write(s->pb, buf, buf_size);

  4833.         av_free(buf);

  4834. 

  4835.         if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)

  4836.             mov->reserved_header_pos = avio_tell(s->pb);

  4837. 

  4838.         mov->moov_written = 1;

  4839.         mov->mdat_size = 0;

  4840.         for (i = 0; i < mov->nb_streams; i++) {

  4841.             if (mov->tracks[i].entry)

  4842.                 mov->tracks[i].frag_start += mov->tracks[i].start_dts +

  4843.                                              mov->tracks[i].track_duration -

  4844.                                              mov->tracks[i].cluster[0].dts;

  4845.             mov->tracks[i].entry = 0;

  4846.             mov->tracks[i].end_reliable = 0;

  4847.         }

  4848.         avio_flush(s->pb);

  4849.         return 0;

  4850.     }

  4851. 

  4852.     if (mov->frag_interleave) {

  4853.         for (i = 0; i < mov->nb_streams; i++) {

  4854.             MOVTrack *track = &mov->tracks[i];

  4855.             int ret;

  4856.             if ((ret = mov_flush_fragment_interleaving(s, track)) < 0)

  4857.                 return ret;

  4858.         }

  4859. 

  4860.         if (!mov->mdat_buf)

  4861.             return 0;

  4862.         mdat_size = avio_tell(mov->mdat_buf);

  4863.     }

  4864. 

  4865.     for (i = 0; i < mov->nb_streams; i++) {

  4866.         MOVTrack *track = &mov->tracks[i];

  4867.         if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF || mov->frag_interleave)

  4868.             track->data_offset = 0;

  4869.         else

  4870.             track->data_offset = mdat_size;

  4871.         if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  4872.             has_video = 1;

  4873.             if (first_video_track) {

  4874.                 if (track->entry)

  4875.                     starts_with_key = track->cluster[0].flags & MOV_SYNC_SAMPLE;

  4876.                 first_video_track = 0;

  4877.             }

  4878.         }

  4879.         if (!track->entry)

  4880.             continue;

  4881.         if (track->mdat_buf)

  4882.             mdat_size += avio_tell(track->mdat_buf);

  4883.         if (first_track < 0)

  4884.             first_track = i;

  4885.     }

  4886. 

  4887.     if (!mdat_size)

  4888.         return 0;

  4889. 

  4890.     avio_write_marker(s->pb,

  4891.                       av_rescale(mov->tracks[first_track].cluster[0].dts, AV_TIME_BASE, mov->tracks[first_track].timescale),

  4892.                       (has_video ? starts_with_key : mov->tracks[first_track].cluster[0].flags & MOV_SYNC_SAMPLE) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT);

  4893. 

  4894.     for (i = 0; i < mov->nb_streams; i++) {

  4895.         MOVTrack *track = &mov->tracks[i];

  4896.         int buf_size, write_moof = 1, moof_tracks = -1;

  4897.         uint8_t *buf;

  4898.         int64_t duration = 0;

  4899. 

  4900.         if (track->entry)

  4901.             duration = track->start_dts + track->track_duration -

  4902.                        track->cluster[0].dts;

  4903.         if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {

  4904.             if (!track->mdat_buf)

  4905.                 continue;

  4906.             mdat_size = avio_tell(track->mdat_buf);

  4907.             moof_tracks = i;

  4908.         } else {

  4909.             write_moof = i == first_track;

  4910.         }

  4911. 

  4912.         if (write_moof) {

  4913.             avio_flush(s->pb);

  4914. 

  4915.             mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);

  4916.             mov->fragments++;

  4917. 

  4918.             avio_wb32(s->pb, mdat_size + 8);

  4919.             ffio_wfourcc(s->pb, "mdat");

  4920.         }

  4921. 

  4922.         if (track->entry)

  4923.             track->frag_start += duration;

  4924.         track->entry = 0;

  4925.         track->entries_flushed = 0;

  4926.         track->end_reliable = 0;

  4927.         if (!mov->frag_interleave) {

  4928.             if (!track->mdat_buf)

  4929.                 continue;

  4930.             buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);

  4931.             track->mdat_buf = NULL;

  4932.         } else {

  4933.             if (!mov->mdat_buf)

  4934.                 continue;

  4935.             buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);

  4936.             mov->mdat_buf = NULL;

  4937.         }

  4938. 

  4939.         avio_write(s->pb, buf, buf_size);

  4940.         av_free(buf);

  4941.     }

  4942. 

  4943.     mov->mdat_size = 0;

  4944. 

  4945.     avio_flush(s->pb);

  4946.     return 0;

  4947. }

  4948. 

  4949. static int mov_auto_flush_fragment(AVFormatContext *s, int force)

  4950. {

  4951.     MOVMuxContext *mov = s->priv_data;

  4952.     int had_moov = mov->moov_written;

  4953.     int ret = mov_flush_fragment(s, force);

  4954.     if (ret < 0)

  4955.         return ret;

  4956.     // If using delay_moov, the first flush only wrote the moov,

  4957.     // not the actual moof+mdat pair, thus flush once again.

  4958.     if (!had_moov && mov->flags & FF_MOV_FLAG_DELAY_MOOV)

  4959.         ret = mov_flush_fragment(s, force);

  4960.     return ret;

  4961. }

  4962. 

  4963. static int check_pkt(AVFormatContext *s, AVPacket *pkt)

  4964. {

  4965.     MOVMuxContext *mov = s->priv_data;

  4966.     MOVTrack *trk = &mov->tracks[pkt->stream_index];

  4967.     int64_t ref;

  4968.     uint64_t duration;

  4969. 

  4970.     if (trk->entry) {

  4971.         ref = trk->cluster[trk->entry - 1].dts;

  4972.     } else if (   trk->start_dts != AV_NOPTS_VALUE

  4973.                && !trk->frag_discont) {

  4974.         ref = trk->start_dts + trk->track_duration;

  4975.     } else

  4976.         ref = pkt->dts; // Skip tests for the first packet

  4977. 

  4978.     duration = pkt->dts - ref;

  4979.     if (pkt->dts < ref || duration >= INT_MAX) {

  4980.         av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",

  4981.             duration, pkt->dts

  4982.         );

  4983. 

  4984.         pkt->dts = ref + 1;

  4985.         pkt->pts = AV_NOPTS_VALUE;

  4986.     }

  4987. 

  4988.     if (pkt->duration < 0 || pkt->duration > INT_MAX) {

  4989.         av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" is invalid\n", pkt->duration);

  4990.         return AVERROR(EINVAL);

  4991.     }

  4992.     return 0;

  4993. }

  4994. 

  4995. int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)

  4996. {

  4997.     MOVMuxContext *mov = s->priv_data;

  4998.     AVIOContext *pb = s->pb;

  4999.     MOVTrack *trk = &mov->tracks[pkt->stream_index];

  5000.     AVCodecParameters *par = trk->par;

  5001.     unsigned int samples_in_chunk = 0;

  5002.     int size = pkt->size, ret = 0;

  5003.     uint8_t *reformatted_data = NULL;

  5004. 

  5005.     ret = check_pkt(s, pkt);

  5006.     if (ret < 0)

  5007.         return ret;

  5008. 

  5009.     if (mov->flags & FF_MOV_FLAG_FRAGMENT) {

  5010.         int ret;

  5011.         if (mov->moov_written || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {

  5012.             if (mov->frag_interleave && mov->fragments > 0) {

  5013.                 if (trk->entry - trk->entries_flushed >= mov->frag_interleave) {

  5014.                     if ((ret = mov_flush_fragment_interleaving(s, trk)) < 0)

  5015.                         return ret;

  5016.                 }

  5017.             }

  5018. 

  5019.             if (!trk->mdat_buf) {

  5020.                 if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)

  5021.                     return ret;

  5022.             }

  5023.             pb = trk->mdat_buf;

  5024.         } else {

  5025.             if (!mov->mdat_buf) {

  5026.                 if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)

  5027.                     return ret;

  5028.             }

  5029.             pb = mov->mdat_buf;

  5030.         }

  5031.     }

  5032. 

  5033.     if (par->codec_id == AV_CODEC_ID_AMR_NB) {

  5034.         /* We must find out how many AMR blocks there are in one packet */

  5035.         static const uint16_t packed_size[16] =

  5036.             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};

  5037.         int len = 0;

  5038. 

  5039.         while (len < size && samples_in_chunk < 100) {

  5040.             len += packed_size[(pkt->data[len] >> 3) & 0x0F];

  5041.             samples_in_chunk++;

  5042.         }

  5043.         if (samples_in_chunk > 1) {

  5044.             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");

  5045.             return -1;

  5046.         }

  5047.     } else if (par->codec_id == AV_CODEC_ID_ADPCM_MS ||

  5048.                par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {

  5049.         samples_in_chunk = trk->par->frame_size;

  5050.     } else if (trk->sample_size)

  5051.         samples_in_chunk = size / trk->sample_size;

  5052.     else

  5053.         samples_in_chunk = 1;

  5054. 

  5055.     /* copy extradata if it exists */

  5056.     if (trk->vos_len == 0 && par->extradata_size > 0 &&

  5057.         !TAG_IS_AVCI(trk->tag) &&

  5058.         (par->codec_id != AV_CODEC_ID_DNXHD)) {

  5059.         trk->vos_len  = par->extradata_size;

  5060.         trk->vos_data = av_malloc(trk->vos_len);

  5061.         if (!trk->vos_data) {

  5062.             ret = AVERROR(ENOMEM);

  5063.             goto err;

  5064.         }

  5065.         memcpy(trk->vos_data, par->extradata, trk->vos_len);

  5066.     }

  5067. 

  5068.     if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&

  5069.         (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {

  5070.         if (!s->streams[pkt->stream_index]->nb_frames) {

  5071.             av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "

  5072.                    "use the audio bitstream filter 'aac_adtstoasc' to fix it "

  5073.                    "('-bsf:a aac_adtstoasc' option with ffmpeg)\n");

  5074.             return -1;

  5075.         }

  5076.         av_log(s, AV_LOG_WARNING, "aac bitstream error\n");

  5077.     }

  5078.     if (par->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {

  5079.         /* from x264 or from bytestream H.264 */

  5080.         /* NAL reformatting needed */

  5081.         if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {

  5082.             ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,

  5083.                                        &size);

  5084.             avio_write(pb, reformatted_data, size);

  5085.         } else {

  5086.             if (trk->cenc.aes_ctr) {

  5087.                 size = ff_mov_cenc_avc_parse_nal_units(&trk->cenc, pb, pkt->data, size);

  5088.                 if (size < 0) {

  5089.                     ret = size;

  5090.                     goto err;

  5091.                 }

  5092.             } else {

  5093.                 size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);

  5094.             }

  5095.         }

  5096.     } else if (par->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&

  5097.                (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {

  5098.         /* extradata is Annex B, assume the bitstream is too and convert it */

  5099.         if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {

  5100.             ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);

  5101.             avio_write(pb, reformatted_data, size);

  5102.         } else {

  5103.             size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);

  5104.         }

  5105. #if CONFIG_AC3_PARSER

  5106.     } else if (par->codec_id == AV_CODEC_ID_EAC3) {

  5107.         size = handle_eac3(mov, pkt, trk);

  5108.         if (size < 0)

  5109.             return size;

  5110.         else if (!size)

  5111.             goto end;

  5112.         avio_write(pb, pkt->data, size);

  5113. #endif

  5114.     } else {

  5115.         if (trk->cenc.aes_ctr) {

  5116.             if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 4) {

  5117.                 int nal_size_length = (par->extradata[4] & 0x3) + 1;

  5118.                 ret = ff_mov_cenc_avc_write_nal_units(s, &trk->cenc, nal_size_length, pb, pkt->data, size);

  5119.             } else {

  5120.                 ret = ff_mov_cenc_write_packet(&trk->cenc, pb, pkt->data, size);

  5121.             }

  5122. 

  5123.             if (ret) {

  5124.                 goto err;

  5125.             }

  5126.         } else {

  5127.             avio_write(pb, pkt->data, size);

  5128.         }

  5129.     }

  5130. 

  5131.     if ((par->codec_id == AV_CODEC_ID_DNXHD ||

  5132.          par->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {

  5133.         /* copy frame to create needed atoms */

  5134.         trk->vos_len  = size;

  5135.         trk->vos_data = av_malloc(size);

  5136.         if (!trk->vos_data) {

  5137.             ret = AVERROR(ENOMEM);

  5138.             goto err;

  5139.         }

  5140.         memcpy(trk->vos_data, pkt->data, size);

  5141.     }

  5142. 

  5143.     if (trk->entry >= trk->cluster_capacity) {

  5144.         unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);

  5145.         if (av_reallocp_array(&trk->cluster, new_capacity,

  5146.                               sizeof(*trk->cluster))) {

  5147.             ret = AVERROR(ENOMEM);

  5148.             goto err;

  5149.         }

  5150.         trk->cluster_capacity = new_capacity;

  5151.     }

  5152. 

  5153.     trk->cluster[trk->entry].pos              = avio_tell(pb) - size;

  5154.     trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;

  5155.     trk->cluster[trk->entry].chunkNum         = 0;

  5156.     trk->cluster[trk->entry].size             = size;

  5157.     trk->cluster[trk->entry].entries          = samples_in_chunk;

  5158.     trk->cluster[trk->entry].dts              = pkt->dts;

  5159.     if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {

  5160.         if (!trk->frag_discont) {

  5161.             /* First packet of a new fragment. We already wrote the duration

  5162.              * of the last packet of the previous fragment based on track_duration,

  5163.              * which might not exactly match our dts. Therefore adjust the dts

  5164.              * of this packet to be what the previous packets duration implies. */

  5165.             trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;

  5166.             /* We also may have written the pts and the corresponding duration

  5167.              * in sidx/tfrf/tfxd tags; make sure the sidx pts and duration match up with

  5168.              * the next fragment. This means the cts of the first sample must

  5169.              * be the same in all fragments, unless end_pts was updated by

  5170.              * the packet causing the fragment to be written. */

  5171.             if ((mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)) ||

  5172.                 mov->mode == MODE_ISM)

  5173.                 pkt->pts = pkt->dts + trk->end_pts - trk->cluster[trk->entry].dts;

  5174.         } else {

  5175.             /* New fragment, but discontinuous from previous fragments.

  5176.              * Pretend the duration sum of the earlier fragments is

  5177.              * pkt->dts - trk->start_dts. */

  5178.             trk->frag_start = pkt->dts - trk->start_dts;

  5179.             trk->end_pts = AV_NOPTS_VALUE;

  5180.             trk->frag_discont = 0;

  5181.         }

  5182.     }

  5183. 

  5184.     if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&

  5185.         s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {

  5186.         /* Not using edit lists and shifting the first track to start from zero.

  5187.          * If the other streams start from a later timestamp, we won't be able

  5188.          * to signal the difference in starting time without an edit list.

  5189.          * Thus move the timestamp for this first sample to 0, increasing

  5190.          * its duration instead. */

  5191.         trk->cluster[trk->entry].dts = trk->start_dts = 0;

  5192.     }

  5193.     if (trk->start_dts == AV_NOPTS_VALUE) {

  5194.         trk->start_dts = pkt->dts;

  5195.         if (trk->frag_discont) {

  5196.             if (mov->use_editlist) {

  5197.                 /* Pretend the whole stream started at pts=0, with earlier fragments

  5198.                  * already written. If the stream started at pts=0, the duration sum

  5199.                  * of earlier fragments would have been pkt->pts. */

  5200.                 trk->frag_start = pkt->pts;

  5201.                 trk->start_dts  = pkt->dts - pkt->pts;

  5202.             } else {

  5203.                 /* Pretend the whole stream started at dts=0, with earlier fragments

  5204.                  * already written, with a duration summing up to pkt->dts. */

  5205.                 trk->frag_start = pkt->dts;

  5206.                 trk->start_dts  = 0;

  5207.             }

  5208.             trk->frag_discont = 0;

  5209.         } else if (pkt->dts && mov->moov_written)

  5210.             av_log(s, AV_LOG_WARNING,

  5211.                    "Track %d starts with a nonzero dts %"PRId64", while the moov "

  5212.                    "already has been written. Set the delay_moov flag to handle "

  5213.                    "this case.\n",

  5214.                    pkt->stream_index, pkt->dts);

  5215.     }

  5216.     trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;

  5217.     trk->last_sample_is_subtitle_end = 0;

  5218. 

  5219.     if (pkt->pts == AV_NOPTS_VALUE) {

  5220.         av_log(s, AV_LOG_WARNING, "pts has no value\n");

  5221.         pkt->pts = pkt->dts;

  5222.     }

  5223.     if (pkt->dts != pkt->pts)

  5224.         trk->flags |= MOV_TRACK_CTTS;

  5225.     trk->cluster[trk->entry].cts   = pkt->pts - pkt->dts;

  5226.     trk->cluster[trk->entry].flags = 0;

  5227.     if (trk->start_cts == AV_NOPTS_VALUE)

  5228.         trk->start_cts = pkt->pts - pkt->dts;

  5229.     if (trk->end_pts == AV_NOPTS_VALUE)

  5230.         trk->end_pts = trk->cluster[trk->entry].dts +

  5231.                        trk->cluster[trk->entry].cts + pkt->duration;

  5232.     else

  5233.         trk->end_pts = FFMAX(trk->end_pts, trk->cluster[trk->entry].dts +

  5234.                                            trk->cluster[trk->entry].cts +

  5235.                                            pkt->duration);

  5236. 

  5237.     if (par->codec_id == AV_CODEC_ID_VC1) {

  5238.         mov_parse_vc1_frame(pkt, trk);

  5239.     } else if (pkt->flags & AV_PKT_FLAG_KEY) {

  5240.         if (mov->mode == MODE_MOV && par->codec_id == AV_CODEC_ID_MPEG2VIDEO &&

  5241.             trk->entry > 0) { // force sync sample for the first key frame

  5242.             mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);

  5243.             if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)

  5244.                 trk->flags |= MOV_TRACK_STPS;

  5245.         } else {

  5246.             trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;

  5247.         }

  5248.         if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)

  5249.             trk->has_keyframes++;

  5250.     }

  5251.     trk->entry++;

  5252.     trk->sample_count += samples_in_chunk;

  5253.     mov->mdat_size    += size;

  5254. 

  5255.     if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)

  5256.         ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,

  5257.                                  reformatted_data, size);

  5258. 

  5259. end:

  5260. err:

  5261. 

  5262.     av_free(reformatted_data);

  5263.     return ret;

  5264. }

  5265. 

  5266. static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt)

  5267. {

  5268.         MOVMuxContext *mov = s->priv_data;

  5269.         MOVTrack *trk = &mov->tracks[pkt->stream_index];

  5270.         AVCodecParameters *par = trk->par;

  5271.         int64_t frag_duration = 0;

  5272.         int size = pkt->size;

  5273. 

  5274.         int ret = check_pkt(s, pkt);

  5275.         if (ret < 0)

  5276.             return ret;

  5277. 

  5278.         if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {

  5279.             int i;

  5280.             for (i = 0; i < s->nb_streams; i++)

  5281.                 mov->tracks[i].frag_discont = 1;

  5282.             mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;

  5283.         }

  5284. 

  5285.         if (trk->par->codec_id == AV_CODEC_ID_MP4ALS ||

  5286.             trk->par->codec_id == AV_CODEC_ID_AAC ||

  5287.             trk->par->codec_id == AV_CODEC_ID_FLAC) {

  5288.             int side_size = 0;

  5289.             uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);

  5290.             if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) {

  5291.                 void *newextra = av_mallocz(side_size + AV_INPUT_BUFFER_PADDING_SIZE);

  5292.                 if (!newextra)

  5293.                     return AVERROR(ENOMEM);

  5294.                 av_free(par->extradata);

  5295.                 par->extradata = newextra;

  5296.                 memcpy(par->extradata, side, side_size);

  5297.                 par->extradata_size = side_size;

  5298.                 if (!pkt->size) // Flush packet

  5299.                     mov->need_rewrite_extradata = 1;

  5300.             }

  5301.         }

  5302. 

  5303.         if (!pkt->size) {

  5304.             if (trk->start_dts == AV_NOPTS_VALUE && trk->frag_discont) {

  5305.                 trk->start_dts = pkt->dts;

  5306.                 if (pkt->pts != AV_NOPTS_VALUE)

  5307.                     trk->start_cts = pkt->pts - pkt->dts;

  5308.                 else

  5309.                     trk->start_cts = 0;

  5310.             }

  5311. 

  5312.             return 0;             /* Discard 0 sized packets */

  5313.         }

  5314. 

  5315.         if (trk->entry && pkt->stream_index < s->nb_streams)

  5316.             frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,

  5317.                                          s->streams[pkt->stream_index]->time_base,

  5318.                                          AV_TIME_BASE_Q);

  5319.         if ((mov->max_fragment_duration &&

  5320.              frag_duration >= mov->max_fragment_duration) ||

  5321.              (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||

  5322.              (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&

  5323.               par->codec_type == AVMEDIA_TYPE_VIDEO &&

  5324.               trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {

  5325.             if (frag_duration >= mov->min_fragment_duration) {

  5326.                 // Set the duration of this track to line up with the next

  5327.                 // sample in this track. This avoids relying on AVPacket

  5328.                 // duration, but only helps for this particular track, not

  5329.                 // for the other ones that are flushed at the same time.

  5330.                 trk->track_duration = pkt->dts - trk->start_dts;

  5331.                 if (pkt->pts != AV_NOPTS_VALUE)

  5332.                     trk->end_pts = pkt->pts;

  5333.                 else

  5334.                     trk->end_pts = pkt->dts;

  5335.                 trk->end_reliable = 1;

  5336.                 mov_auto_flush_fragment(s, 0);

  5337.             }

  5338.         }

  5339. 

  5340.         return ff_mov_write_packet(s, pkt);

  5341. }

  5342. 

  5343. static int mov_write_subtitle_end_packet(AVFormatContext *s,

  5344.                                          int stream_index,

  5345.                                          int64_t dts) {

  5346.     AVPacket end;

  5347.     uint8_t data[2] = {0};

  5348.     int ret;

  5349. 

  5350.     av_init_packet(&end);

  5351.     end.size = sizeof(data);

  5352.     end.data = data;

  5353.     end.pts = dts;

  5354.     end.dts = dts;

  5355.     end.duration = 0;

  5356.     end.stream_index = stream_index;

  5357. 

  5358.     ret = mov_write_single_packet(s, &end);

  5359.     av_packet_unref(&end);

  5360. 

  5361.     return ret;

  5362. }

  5363. 

  5364. static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)

  5365. {

  5366.     if (!pkt) {

  5367.         mov_flush_fragment(s, 1);

  5368.         return 1;

  5369.     } else {

  5370.         int i;

  5371.         MOVMuxContext *mov = s->priv_data;

  5372.         MOVTrack *trk = &mov->tracks[pkt->stream_index];

  5373. 

  5374.         if (!pkt->size)

  5375.             return mov_write_single_packet(s, pkt); /* Passthrough. */

  5376. 

  5377.         /*

  5378.          * Subtitles require special handling.

  5379.          *

  5380.          * 1) For full complaince, every track must have a sample at

  5381.          * dts == 0, which is rarely true for subtitles. So, as soon

  5382.          * as we see any packet with dts > 0, write an empty subtitle

  5383.          * at dts == 0 for any subtitle track with no samples in it.

  5384.          *

  5385.          * 2) For each subtitle track, check if the current packet's

  5386.          * dts is past the duration of the last subtitle sample. If

  5387.          * so, we now need to write an end sample for that subtitle.

  5388.          *

  5389.          * This must be done conditionally to allow for subtitles that

  5390.          * immediately replace each other, in which case an end sample

  5391.          * is not needed, and is, in fact, actively harmful.

  5392.          *

  5393.          * 3) See mov_write_trailer for how the final end sample is

  5394.          * handled.

  5395.          */

  5396.         for (i = 0; i < mov->nb_streams; i++) {

  5397.             MOVTrack *trk = &mov->tracks[i];

  5398.             int ret;

  5399. 

  5400.             if (trk->par->codec_id == AV_CODEC_ID_MOV_TEXT &&

  5401.                 trk->track_duration < pkt->dts &&

  5402.                 (trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {

  5403.                 ret = mov_write_subtitle_end_packet(s, i, trk->track_duration);

  5404.                 if (ret < 0) return ret;

  5405.                 trk->last_sample_is_subtitle_end = 1;

  5406.             }

  5407.         }

  5408. 

  5409.         if (trk->mode == MODE_MOV && trk->par->codec_type == AVMEDIA_TYPE_VIDEO) {

  5410.             AVPacket *opkt = pkt;

  5411.             int reshuffle_ret, ret;

  5412.             if (trk->is_unaligned_qt_rgb) {

  5413.                 int64_t bpc = trk->par->bits_per_coded_sample != 15 ? trk->par->bits_per_coded_sample : 16;

  5414.                 int expected_stride = ((trk->par->width * bpc + 15) >> 4)*2;

  5415.                 reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, trk->par, expected_stride);

  5416.                 if (reshuffle_ret < 0)

  5417.                     return reshuffle_ret;

  5418.             } else

  5419.                 reshuffle_ret = 0;

  5420.             if (trk->par->format == AV_PIX_FMT_PAL8 && !trk->pal_done) {

  5421.                 ret = ff_get_packet_palette(s, opkt, reshuffle_ret, trk->palette);

  5422.                 if (ret < 0)

  5423.                     goto fail;

  5424.                 if (ret)

  5425.                     trk->pal_done++;

  5426.             } else if (trk->par->codec_id == AV_CODEC_ID_RAWVIDEO &&

  5427.                        (trk->par->format == AV_PIX_FMT_GRAY8 ||

  5428.                        trk->par->format == AV_PIX_FMT_MONOBLACK)) {

  5429.                 for (i = 0; i < pkt->size; i++)

  5430.                     pkt->data[i] = ~pkt->data[i];

  5431.             }

  5432.             if (reshuffle_ret) {

  5433.                 ret = mov_write_single_packet(s, pkt);

  5434. fail:

  5435.                 if (reshuffle_ret)

  5436.                     av_packet_free(&pkt);

  5437.                 return ret;

  5438.             }

  5439.         }

  5440. 

  5441.         return mov_write_single_packet(s, pkt);

  5442.     }

  5443. }

  5444. 

  5445. // QuickTime chapters involve an additional text track with the chapter names

  5446. // as samples, and a tref pointing from the other tracks to the chapter one.

  5447. static int mov_create_chapter_track(AVFormatContext *s, int tracknum)

  5448. {

  5449.     AVIOContext *pb;

  5450. 

  5451.     MOVMuxContext *mov = s->priv_data;

  5452.     MOVTrack *track = &mov->tracks[tracknum];

  5453.     AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };

  5454.     int i, len;

  5455. 

  5456.     track->mode = mov->mode;

  5457.     track->tag = MKTAG('t','e','x','t');

  5458.     track->timescale = MOV_TIMESCALE;

  5459.     track->par = avcodec_parameters_alloc();

  5460.     if (!track->par)

  5461.         return AVERROR(ENOMEM);

  5462.     track->par->codec_type = AVMEDIA_TYPE_SUBTITLE;

  5463. #if 0

  5464.     // These properties are required to make QT recognize the chapter track

  5465.     uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };

  5466.     if (ff_alloc_extradata(track->par, sizeof(chapter_properties)))

  5467.         return AVERROR(ENOMEM);

  5468.     memcpy(track->par->extradata, chapter_properties, sizeof(chapter_properties));

  5469. #else

  5470.     if (avio_open_dyn_buf(&pb) >= 0) {

  5471.         int size;

  5472.         uint8_t *buf;

  5473. 

  5474.         /* Stub header (usually for Quicktime chapter track) */

  5475.         // TextSampleEntry

  5476.         avio_wb32(pb, 0x01); // displayFlags

  5477.         avio_w8(pb, 0x00);   // horizontal justification

  5478.         avio_w8(pb, 0x00);   // vertical justification

  5479.         avio_w8(pb, 0x00);   // bgColourRed

  5480.         avio_w8(pb, 0x00);   // bgColourGreen

  5481.         avio_w8(pb, 0x00);   // bgColourBlue

  5482.         avio_w8(pb, 0x00);   // bgColourAlpha

  5483.         // BoxRecord

  5484.         avio_wb16(pb, 0x00); // defTextBoxTop

  5485.         avio_wb16(pb, 0x00); // defTextBoxLeft

  5486.         avio_wb16(pb, 0x00); // defTextBoxBottom

  5487.         avio_wb16(pb, 0x00); // defTextBoxRight

  5488.         // StyleRecord

  5489.         avio_wb16(pb, 0x00); // startChar

  5490.         avio_wb16(pb, 0x00); // endChar

  5491.         avio_wb16(pb, 0x01); // fontID

  5492.         avio_w8(pb, 0x00);   // fontStyleFlags

  5493.         avio_w8(pb, 0x00);   // fontSize

  5494.         avio_w8(pb, 0x00);   // fgColourRed

  5495.         avio_w8(pb, 0x00);   // fgColourGreen

  5496.         avio_w8(pb, 0x00);   // fgColourBlue

  5497.         avio_w8(pb, 0x00);   // fgColourAlpha

  5498.         // FontTableBox

  5499.         avio_wb32(pb, 0x0D); // box size

  5500.         ffio_wfourcc(pb, "ftab"); // box atom name

  5501.         avio_wb16(pb, 0x01); // entry count

  5502.         // FontRecord

  5503.         avio_wb16(pb, 0x01); // font ID

  5504.         avio_w8(pb, 0x00);   // font name length

  5505. 

  5506.         if ((size = avio_close_dyn_buf(pb, &buf)) > 0) {

  5507.             track->par->extradata = buf;

  5508.             track->par->extradata_size = size;

  5509.         } else {

  5510.             av_freep(&buf);

  5511.         }

  5512.     }

  5513. #endif

  5514. 

  5515.     for (i = 0; i < s->nb_chapters; i++) {

  5516.         AVChapter *c = s->chapters[i];

  5517.         AVDictionaryEntry *t;

  5518. 

  5519.         int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});

  5520.         pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});

  5521.         pkt.duration = end - pkt.dts;

  5522. 

  5523.         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {

  5524.             static const char encd[12] = {

  5525.                 0x00, 0x00, 0x00, 0x0C,

  5526.                 'e',  'n',  'c',  'd',

  5527.                 0x00, 0x00, 0x01, 0x00 };

  5528.             len      = strlen(t->value);

  5529.             pkt.size = len + 2 + 12;

  5530.             pkt.data = av_malloc(pkt.size);

  5531.             if (!pkt.data)

  5532.                 return AVERROR(ENOMEM);

  5533.             AV_WB16(pkt.data, len);

  5534.             memcpy(pkt.data + 2, t->value, len);

  5535.             memcpy(pkt.data + len + 2, encd, sizeof(encd));

  5536.             ff_mov_write_packet(s, &pkt);

  5537.             av_freep(&pkt.data);

  5538.         }

  5539.     }

  5540. 

  5541.     return 0;

  5542. }

  5543. 

  5544. 

  5545. static int mov_check_timecode_track(AVFormatContext *s, AVTimecode *tc, int src_index, const char *tcstr)

  5546. {

  5547.     int ret;

  5548. 

  5549.     /* compute the frame number */

  5550.     ret = av_timecode_init_from_string(tc, find_fps(s,  s->streams[src_index]), tcstr, s);

  5551.     return ret;

  5552. }

  5553. 

  5554. static int mov_create_timecode_track(AVFormatContext *s, int index, int src_index, AVTimecode tc)

  5555. {

  5556.     int ret;

  5557.     MOVMuxContext *mov  = s->priv_data;

  5558.     MOVTrack *track     = &mov->tracks[index];

  5559.     AVStream *src_st    = s->streams[src_index];

  5560.     AVPacket pkt    = {.stream_index = index, .flags = AV_PKT_FLAG_KEY, .size = 4};

  5561.     AVRational rate = find_fps(s, src_st);

  5562. 

  5563.     /* tmcd track based on video stream */

  5564.     track->mode      = mov->mode;

  5565.     track->tag       = MKTAG('t','m','c','d');

  5566.     track->src_track = src_index;

  5567.     track->timescale = mov->tracks[src_index].timescale;

  5568.     if (tc.flags & AV_TIMECODE_FLAG_DROPFRAME)

  5569.         track->timecode_flags |= MOV_TIMECODE_FLAG_DROPFRAME;

  5570. 

  5571.     /* set st to src_st for metadata access*/

  5572.     track->st = src_st;

  5573. 

  5574.     /* encode context: tmcd data stream */

  5575.     track->par = avcodec_parameters_alloc();

  5576.     if (!track->par)

  5577.         return AVERROR(ENOMEM);

  5578.     track->par->codec_type = AVMEDIA_TYPE_DATA;

  5579.     track->par->codec_tag  = track->tag;

  5580.     track->st->avg_frame_rate = av_inv_q(rate);

  5581. 

  5582.     /* the tmcd track just contains one packet with the frame number */

  5583.     pkt.data = av_malloc(pkt.size);

  5584.     if (!pkt.data)

  5585.         return AVERROR(ENOMEM);

  5586.     AV_WB32(pkt.data, tc.start);

  5587.     ret = ff_mov_write_packet(s, &pkt);

  5588.     av_free(pkt.data);

  5589.     return ret;

  5590. }

  5591. 

  5592. /*

  5593.  * st->disposition controls the "enabled" flag in the tkhd tag.

  5594.  * QuickTime will not play a track if it is not enabled.  So make sure

  5595.  * that one track of each type (audio, video, subtitle) is enabled.

  5596.  *

  5597.  * Subtitles are special.  For audio and video, setting "enabled" also

  5598.  * makes the track "default" (i.e. it is rendered when played). For

  5599.  * subtitles, an "enabled" subtitle is not rendered by default, but

  5600.  * if no subtitle is enabled, the subtitle menu in QuickTime will be

  5601.  * empty!

  5602.  */

  5603. static void enable_tracks(AVFormatContext *s)

  5604. {

  5605.     MOVMuxContext *mov = s->priv_data;

  5606.     int i;

  5607.     int enabled[AVMEDIA_TYPE_NB];

  5608.     int first[AVMEDIA_TYPE_NB];

  5609. 

  5610.     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {

  5611.         enabled[i] = 0;

  5612.         first[i] = -1;

  5613.     }

  5614. 

  5615.     for (i = 0; i < s->nb_streams; i++) {

  5616.         AVStream *st = s->streams[i];

  5617. 

  5618.         if (st->codecpar->codec_type <= AVMEDIA_TYPE_UNKNOWN ||

  5619.             st->codecpar->codec_type >= AVMEDIA_TYPE_NB)

  5620.             continue;

  5621. 

  5622.         if (first[st->codecpar->codec_type] < 0)

  5623.             first[st->codecpar->codec_type] = i;

  5624.         if (st->disposition & AV_DISPOSITION_DEFAULT) {

  5625.             mov->tracks[i].flags |= MOV_TRACK_ENABLED;

  5626.             enabled[st->codecpar->codec_type]++;

  5627.         }

  5628.     }

  5629. 

  5630.     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {

  5631.         switch (i) {

  5632.         case AVMEDIA_TYPE_VIDEO:

  5633.         case AVMEDIA_TYPE_AUDIO:

  5634.         case AVMEDIA_TYPE_SUBTITLE:

  5635.             if (enabled[i] > 1)

  5636.                 mov->per_stream_grouping = 1;

  5637.             if (!enabled[i] && first[i] >= 0)

  5638.                 mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;

  5639.             break;

  5640.         }

  5641.     }

  5642. }

  5643. 

  5644. static void mov_free(AVFormatContext *s)

  5645. {

  5646.     MOVMuxContext *mov = s->priv_data;

  5647.     int i;

  5648. 

  5649.     if (mov->chapter_track) {

  5650.         if (mov->tracks[mov->chapter_track].par)

  5651.             av_freep(&mov->tracks[mov->chapter_track].par->extradata);

  5652.         av_freep(&mov->tracks[mov->chapter_track].par);

  5653.     }

  5654. 

  5655.     for (i = 0; i < mov->nb_streams; i++) {

  5656.         if (mov->tracks[i].tag == MKTAG('r','t','p',' '))

  5657.             ff_mov_close_hinting(&mov->tracks[i]);

  5658.         else if (mov->tracks[i].tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd)

  5659.             av_freep(&mov->tracks[i].par);

  5660.         av_freep(&mov->tracks[i].cluster);

  5661.         av_freep(&mov->tracks[i].frag_info);

  5662. 

  5663.         if (mov->tracks[i].vos_len)

  5664.             av_freep(&mov->tracks[i].vos_data);

  5665. 

  5666.         ff_mov_cenc_free(&mov->tracks[i].cenc);

  5667.     }

  5668. 

  5669.     av_freep(&mov->tracks);

  5670. }

  5671. 

  5672. static uint32_t rgb_to_yuv(uint32_t rgb)

  5673. {

  5674.     uint8_t r, g, b;

  5675.     int y, cb, cr;

  5676. 

  5677.     r = (rgb >> 16) & 0xFF;

  5678.     g = (rgb >>  8) & 0xFF;

  5679.     b = (rgb      ) & 0xFF;

  5680. 

  5681.     y  = av_clip_uint8(( 16000 +  257 * r + 504 * g +  98 * b)/1000);

  5682.     cb = av_clip_uint8((128000 -  148 * r - 291 * g + 439 * b)/1000);

  5683.     cr = av_clip_uint8((128000 +  439 * r - 368 * g -  71 * b)/1000);

  5684. 

  5685.     return (y << 16) | (cr << 8) | cb;

  5686. }

  5687. 

  5688. static int mov_create_dvd_sub_decoder_specific_info(MOVTrack *track,

  5689.                                                     AVStream *st)

  5690. {

  5691.     int i, width = 720, height = 480;

  5692.     int have_palette = 0, have_size = 0;

  5693.     uint32_t palette[16];

  5694.     char *cur = st->codecpar->extradata;

  5695. 

  5696.     while (cur && *cur) {

  5697.         if (strncmp("palette:", cur, 8) == 0) {

  5698.             int i, count;

  5699.             count = sscanf(cur + 8,

  5700.                 "%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "

  5701.                 "%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "

  5702.                 "%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32", "

  5703.                 "%06"PRIx32", %06"PRIx32", %06"PRIx32", %06"PRIx32"",

  5704.                 &palette[ 0], &palette[ 1], &palette[ 2], &palette[ 3],

  5705.                 &palette[ 4], &palette[ 5], &palette[ 6], &palette[ 7],

  5706.                 &palette[ 8], &palette[ 9], &palette[10], &palette[11],

  5707.                 &palette[12], &palette[13], &palette[14], &palette[15]);

  5708. 

  5709.             for (i = 0; i < count; i++) {

  5710.                 palette[i] = rgb_to_yuv(palette[i]);

  5711.             }

  5712.             have_palette = 1;

  5713.         } else if (!strncmp("size:", cur, 5)) {

  5714.             sscanf(cur + 5, "%dx%d", &width, &height);

  5715.             have_size = 1;

  5716.         }

  5717.         if (have_palette && have_size)

  5718.             break;

  5719.         cur += strcspn(cur, "\n\r");

  5720.         cur += strspn(cur, "\n\r");

  5721.     }

  5722.     if (have_palette) {

  5723.         track->vos_data = av_malloc(16*4);

  5724.         if (!track->vos_data)

  5725.             return AVERROR(ENOMEM);

  5726.         for (i = 0; i < 16; i++) {

  5727.             AV_WB32(track->vos_data + i * 4, palette[i]);

  5728.         }

  5729.         track->vos_len = 16 * 4;

  5730.     }

  5731.     st->codecpar->width = width;

  5732.     st->codecpar->height = track->height = height;

  5733. 

  5734.     return 0;

  5735. }

  5736. 

  5737. static int mov_init(AVFormatContext *s)

  5738. {

  5739.     MOVMuxContext *mov = s->priv_data;

  5740.     AVDictionaryEntry *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  5741.     int i, ret;

  5742. 

  5743.     mov->fc = s;

  5744. 

  5745.     /* Default mode == MP4 */

  5746.     mov->mode = MODE_MP4;

  5747. 

  5748.     if (s->oformat) {

  5749.         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;

  5750.         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;

  5751.         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;

  5752.         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;

  5753.         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;

  5754.         else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;

  5755.         else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V;

  5756.     }

  5757. 

  5758.     if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)

  5759.         mov->flags |= FF_MOV_FLAG_EMPTY_MOOV;

  5760. 

  5761.     /* Set the FRAGMENT flag if any of the fragmentation methods are

  5762.      * enabled. */

  5763.     if (mov->max_fragment_duration || mov->max_fragment_size ||

  5764.         mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |

  5765.                       FF_MOV_FLAG_FRAG_KEYFRAME |

  5766.                       FF_MOV_FLAG_FRAG_CUSTOM))

  5767.         mov->flags |= FF_MOV_FLAG_FRAGMENT;

  5768. 

  5769.     /* Set other implicit flags immediately */

  5770.     if (mov->mode == MODE_ISM)

  5771.         mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF |

  5772.                       FF_MOV_FLAG_FRAGMENT;

  5773.     if (mov->flags & FF_MOV_FLAG_DASH)

  5774.         mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV |

  5775.                       FF_MOV_FLAG_DEFAULT_BASE_MOOF;

  5776. 

  5777.     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && s->flags & AVFMT_FLAG_AUTO_BSF) {

  5778.         av_log(s, AV_LOG_VERBOSE, "Empty MOOV enabled; disabling automatic bitstream filtering\n");

  5779.         s->flags &= ~AVFMT_FLAG_AUTO_BSF;

  5780.     }

  5781. 

  5782.     if (mov->flags & FF_MOV_FLAG_FASTSTART) {

  5783.         mov->reserved_moov_size = -1;

  5784.     }

  5785. 

  5786.     if (mov->use_editlist < 0) {

  5787.         mov->use_editlist = 1;

  5788.         if (mov->flags & FF_MOV_FLAG_FRAGMENT &&

  5789.             !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {

  5790.             // If we can avoid needing an edit list by shifting the

  5791.             // tracks, prefer that over (trying to) write edit lists

  5792.             // in fragmented output.

  5793.             if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO ||

  5794.                 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)

  5795.                 mov->use_editlist = 0;

  5796.         }

  5797.     }

  5798.     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&

  5799.         !(mov->flags & FF_MOV_FLAG_DELAY_MOOV) && mov->use_editlist)

  5800.         av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov without delay_moov\n");

  5801. 

  5802.     if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO)

  5803.         s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO;

  5804. 

  5805.     /* Clear the omit_tfhd_offset flag if default_base_moof is set;

  5806.      * if the latter is set that's enough and omit_tfhd_offset doesn't

  5807.      * add anything extra on top of that. */

  5808.     if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&

  5809.         mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)

  5810.         mov->flags &= ~FF_MOV_FLAG_OMIT_TFHD_OFFSET;

  5811. 

  5812.     if (mov->frag_interleave &&

  5813.         mov->flags & (FF_MOV_FLAG_OMIT_TFHD_OFFSET | FF_MOV_FLAG_SEPARATE_MOOF)) {

  5814.         av_log(s, AV_LOG_ERROR,

  5815.                "Sample interleaving in fragments is mutually exclusive with "

  5816.                "omit_tfhd_offset and separate_moof\n");

  5817.         return AVERROR(EINVAL);

  5818.     }

  5819. 

  5820.     /* Non-seekable output is ok if using fragmentation. If ism_lookahead

  5821.      * is enabled, we don't support non-seekable output at all. */

  5822.     if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&

  5823.         (!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) {

  5824.         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");

  5825.         return AVERROR(EINVAL);

  5826.     }

  5827. 

  5828.     mov->nb_streams = s->nb_streams;

  5829.     if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)

  5830.         mov->chapter_track = mov->nb_streams++;

  5831. 

  5832.     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {

  5833.         /* Add hint tracks for each audio and video stream */

  5834.         for (i = 0; i < s->nb_streams; i++) {

  5835.             AVStream *st = s->streams[i];

  5836.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||

  5837.                 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  5838.                 mov->nb_streams++;

  5839.             }

  5840.         }

  5841.     }

  5842. 

  5843.     if (   mov->write_tmcd == -1 && (mov->mode == MODE_MOV || mov->mode == MODE_MP4)

  5844.         || mov->write_tmcd == 1) {

  5845.         /* +1 tmcd track for each video stream with a timecode */

  5846.         for (i = 0; i < s->nb_streams; i++) {

  5847.             AVStream *st = s->streams[i];

  5848.             AVDictionaryEntry *t = global_tcr;

  5849.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&

  5850.                 (t || (t=av_dict_get(st->metadata, "timecode", NULL, 0)))) {

  5851.                 AVTimecode tc;

  5852.                 ret = mov_check_timecode_track(s, &tc, i, t->value);

  5853.                 if (ret >= 0)

  5854.                     mov->nb_meta_tmcd++;

  5855.             }

  5856.         }

  5857. 

  5858.         /* check if there is already a tmcd track to remux */

  5859.         if (mov->nb_meta_tmcd) {

  5860.             for (i = 0; i < s->nb_streams; i++) {

  5861.                 AVStream *st = s->streams[i];

  5862.                 if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {

  5863.                     av_log(s, AV_LOG_WARNING, "You requested a copy of the original timecode track "

  5864.                            "so timecode metadata are now ignored\n");

  5865.                     mov->nb_meta_tmcd = 0;

  5866.                 }

  5867.             }

  5868.         }

  5869. 

  5870.         mov->nb_streams += mov->nb_meta_tmcd;

  5871.     }

  5872. 

  5873.     // Reserve an extra stream for chapters for the case where chapters

  5874.     // are written in the trailer

  5875.     mov->tracks = av_mallocz_array((mov->nb_streams + 1), sizeof(*mov->tracks));

  5876.     if (!mov->tracks)

  5877.         return AVERROR(ENOMEM);

  5878. 

  5879.     if (mov->encryption_scheme_str != NULL && strcmp(mov->encryption_scheme_str, "none") != 0) {

  5880.         if (strcmp(mov->encryption_scheme_str, "cenc-aes-ctr") == 0) {

  5881.             mov->encryption_scheme = MOV_ENC_CENC_AES_CTR;

  5882. 

  5883.             if (mov->encryption_key_len != AES_CTR_KEY_SIZE) {

  5884.                 av_log(s, AV_LOG_ERROR, "Invalid encryption key len %d expected %d\n",

  5885.                     mov->encryption_key_len, AES_CTR_KEY_SIZE);

  5886.                 return AVERROR(EINVAL);

  5887.             }

  5888. 

  5889.             if (mov->encryption_kid_len != CENC_KID_SIZE) {

  5890.                 av_log(s, AV_LOG_ERROR, "Invalid encryption kid len %d expected %d\n",

  5891.                     mov->encryption_kid_len, CENC_KID_SIZE);

  5892.                 return AVERROR(EINVAL);

  5893.             }

  5894.         } else {

  5895.             av_log(s, AV_LOG_ERROR, "unsupported encryption scheme %s\n",

  5896.                 mov->encryption_scheme_str);

  5897.             return AVERROR(EINVAL);

  5898.         }

  5899.     }

  5900. 

  5901.     for (i = 0; i < s->nb_streams; i++) {

  5902.         AVStream *st= s->streams[i];

  5903.         MOVTrack *track= &mov->tracks[i];

  5904.         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);

  5905. 

  5906.         track->st  = st;

  5907.         track->par = st->codecpar;

  5908.         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);

  5909.         if (track->language < 0)

  5910.             track->language = 0;

  5911.         track->mode = mov->mode;

  5912.         track->tag  = mov_find_codec_tag(s, track);

  5913.         if (!track->tag) {

  5914.             av_log(s, AV_LOG_ERROR, "Could not find tag for codec %s in stream #%d, "

  5915.                    "codec not currently supported in container\n",

  5916.                    avcodec_get_name(st->codecpar->codec_id), i);

  5917.             return AVERROR(EINVAL);

  5918.         }

  5919.         /* If hinting of this track is enabled by a later hint track,

  5920.          * this is updated. */

  5921.         track->hint_track = -1;

  5922.         track->start_dts  = AV_NOPTS_VALUE;

  5923.         track->start_cts  = AV_NOPTS_VALUE;

  5924.         track->end_pts    = AV_NOPTS_VALUE;

  5925.         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {

  5926.             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||

  5927.                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||

  5928.                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {

  5929.                 if (st->codecpar->width != 720 || (st->codecpar->height != 608 && st->codecpar->height != 512)) {

  5930.                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");

  5931.                     return AVERROR(EINVAL);

  5932.                 }

  5933.                 track->height = track->tag >> 24 == 'n' ? 486 : 576;

  5934.             }

  5935.             if (mov->video_track_timescale) {

  5936.                 track->timescale = mov->video_track_timescale;

  5937.             } else {

  5938.                 track->timescale = st->time_base.den;

  5939.                 while(track->timescale < 10000)

  5940.                     track->timescale *= 2;

  5941.             }

  5942.             if (st->codecpar->width > 65535 || st->codecpar->height > 65535) {

  5943.                 av_log(s, AV_LOG_ERROR, "Resolution %dx%d too large for mov/mp4\n", st->codecpar->width, st->codecpar->height);

  5944.                 return AVERROR(EINVAL);

  5945.             }

  5946.             if (track->mode == MODE_MOV && track->timescale > 100000)

  5947.                 av_log(s, AV_LOG_WARNING,

  5948.                        "WARNING codec timebase is very high. If duration is too long,\n"

  5949.                        "file may not be playable by quicktime. Specify a shorter timebase\n"

  5950.                        "or choose different container.\n");

  5951.             if (track->mode == MODE_MOV &&

  5952.                 track->par->codec_id == AV_CODEC_ID_RAWVIDEO &&

  5953.                 track->tag == MKTAG('r','a','w',' ')) {

  5954.                 enum AVPixelFormat pix_fmt = track->par->format;

  5955.                 if (pix_fmt == AV_PIX_FMT_NONE && track->par->bits_per_coded_sample == 1)

  5956.                     pix_fmt = AV_PIX_FMT_MONOWHITE;

  5957.                 track->is_unaligned_qt_rgb =

  5958.                         pix_fmt == AV_PIX_FMT_RGB24 ||

  5959.                         pix_fmt == AV_PIX_FMT_BGR24 ||

  5960.                         pix_fmt == AV_PIX_FMT_PAL8 ||

  5961.                         pix_fmt == AV_PIX_FMT_GRAY8 ||

  5962.                         pix_fmt == AV_PIX_FMT_MONOWHITE ||

  5963.                         pix_fmt == AV_PIX_FMT_MONOBLACK;

  5964.             }

  5965.             if (track->par->codec_id == AV_CODEC_ID_VP9) {

  5966.                 if (track->mode != MODE_MP4) {

  5967.                     av_log(s, AV_LOG_ERROR, "VP9 only supported in MP4.\n");

  5968.                     return AVERROR(EINVAL);

  5969.                 }

  5970.             }

  5971.         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  5972.             track->timescale = st->codecpar->sample_rate;

  5973.             if (!st->codecpar->frame_size && !av_get_bits_per_sample(st->codecpar->codec_id)) {

  5974.                 av_log(s, AV_LOG_WARNING, "track %d: codec frame size is not set\n", i);

  5975.                 track->audio_vbr = 1;

  5976.             }else if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_MS ||

  5977.                      st->codecpar->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||

  5978.                      st->codecpar->codec_id == AV_CODEC_ID_ILBC){

  5979.                 if (!st->codecpar->block_align) {

  5980.                     av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);

  5981.                     return AVERROR(EINVAL);

  5982.                 }

  5983.                 track->sample_size = st->codecpar->block_align;

  5984.             }else if (st->codecpar->frame_size > 1){ /* assume compressed audio */

  5985.                 track->audio_vbr = 1;

  5986.             }else{

  5987.                 track->sample_size = (av_get_bits_per_sample(st->codecpar->codec_id) >> 3) * st->codecpar->channels;

  5988.             }

  5989.             if (st->codecpar->codec_id == AV_CODEC_ID_ILBC ||

  5990.                 st->codecpar->codec_id == AV_CODEC_ID_ADPCM_IMA_QT) {

  5991.                 track->audio_vbr = 1;

  5992.             }

  5993.             if (track->mode != MODE_MOV &&

  5994.                 track->par->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) {

  5995.                 if (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {

  5996.                     av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not standard, to mux anyway set strict to -1\n",

  5997.                         i, track->par->sample_rate);

  5998.                     return AVERROR(EINVAL);

  5999.                 } else {

  6000.                     av_log(s, AV_LOG_WARNING, "track %d: muxing mp3 at %dhz is not standard in MP4\n",

  6001.                            i, track->par->sample_rate);

  6002.                 }

  6003.             }

  6004.             if (track->par->codec_id == AV_CODEC_ID_FLAC ||

  6005.                 track->par->codec_id == AV_CODEC_ID_OPUS) {

  6006.                 if (track->mode != MODE_MP4) {

  6007.                     av_log(s, AV_LOG_ERROR, "%s only supported in MP4.\n", avcodec_get_name(track->par->codec_id));

  6008.                     return AVERROR(EINVAL);

  6009.                 }

  6010.                 if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {

  6011.                     av_log(s, AV_LOG_ERROR,

  6012.                            "%s in MP4 support is experimental, add "

  6013.                            "'-strict %d' if you want to use it.\n",

  6014.                            avcodec_get_name(track->par->codec_id), FF_COMPLIANCE_EXPERIMENTAL);

  6015.                     return AVERROR_EXPERIMENTAL;

  6016.                 }

  6017.             }

  6018.         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {

  6019.             track->timescale = st->time_base.den;

  6020.         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {

  6021.             track->timescale = st->time_base.den;

  6022.         } else {

  6023.             track->timescale = MOV_TIMESCALE;

  6024.         }

  6025.         if (!track->height)

  6026.             track->height = st->codecpar->height;

  6027.         /* The ism specific timescale isn't mandatory, but is assumed by

  6028.          * some tools, such as mp4split. */

  6029.         if (mov->mode == MODE_ISM)

  6030.             track->timescale = 10000000;

  6031. 

  6032.         avpriv_set_pts_info(st, 64, 1, track->timescale);

  6033. 

  6034.         if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {

  6035.             ret = ff_mov_cenc_init(&track->cenc, mov->encryption_key,

  6036.                 track->par->codec_id == AV_CODEC_ID_H264, s->flags & AVFMT_FLAG_BITEXACT);

  6037.             if (ret)

  6038.                 return ret;

  6039.         }

  6040.     }

  6041. 

  6042.     enable_tracks(s);

  6043.     return 0;

  6044. }

  6045. 

  6046. static int mov_write_header(AVFormatContext *s)

  6047. {

  6048.     AVIOContext *pb = s->pb;

  6049.     MOVMuxContext *mov = s->priv_data;

  6050.     AVDictionaryEntry *t, *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  6051.     int i, ret, hint_track = 0, tmcd_track = 0, nb_tracks = s->nb_streams;

  6052. 

  6053.     if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)

  6054.         nb_tracks++;

  6055. 

  6056.     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {

  6057.         /* Add hint tracks for each audio and video stream */

  6058.         hint_track = nb_tracks;

  6059.         for (i = 0; i < s->nb_streams; i++) {

  6060.             AVStream *st = s->streams[i];

  6061.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||

  6062.                 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  6063.                 nb_tracks++;

  6064.             }

  6065.         }

  6066.     }

  6067. 

  6068.     if (mov->mode == MODE_MOV || mov->mode == MODE_MP4)

  6069.         tmcd_track = nb_tracks;

  6070. 

  6071.     for (i = 0; i < s->nb_streams; i++) {

  6072.         int j;

  6073.         AVStream *st= s->streams[i];

  6074.         MOVTrack *track= &mov->tracks[i];

  6075. 

  6076.         /* copy extradata if it exists */

  6077.         if (st->codecpar->extradata_size) {

  6078.             if (st->codecpar->codec_id == AV_CODEC_ID_DVD_SUBTITLE)

  6079.                 mov_create_dvd_sub_decoder_specific_info(track, st);

  6080.             else if (!TAG_IS_AVCI(track->tag) && st->codecpar->codec_id != AV_CODEC_ID_DNXHD) {

  6081.                 track->vos_len  = st->codecpar->extradata_size;

  6082.                 track->vos_data = av_malloc(track->vos_len);

  6083.                 if (!track->vos_data) {

  6084.                     return AVERROR(ENOMEM);

  6085.                 }

  6086.                 memcpy(track->vos_data, st->codecpar->extradata, track->vos_len);

  6087.             }

  6088.         }

  6089. 

  6090.         if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||

  6091.             track->par->channel_layout != AV_CH_LAYOUT_MONO)

  6092.             continue;

  6093. 

  6094.         for (j = 0; j < s->nb_streams; j++) {

  6095.             AVStream *stj= s->streams[j];

  6096.             MOVTrack *trackj= &mov->tracks[j];

  6097.             if (j == i)

  6098.                 continue;

  6099. 

  6100.             if (stj->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||

  6101.                 trackj->par->channel_layout != AV_CH_LAYOUT_MONO ||

  6102.                 trackj->language != track->language ||

  6103.                 trackj->tag != track->tag

  6104.             )

  6105.                 continue;

  6106.             track->multichannel_as_mono++;

  6107.         }

  6108.     }

  6109. 

  6110.     if (!(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {

  6111.         if ((ret = mov_write_identification(pb, s)) < 0)

  6112.             return ret;

  6113.     }

  6114. 

  6115.     if (mov->reserved_moov_size){

  6116.         mov->reserved_header_pos = avio_tell(pb);

  6117.         if (mov->reserved_moov_size > 0)

  6118.             avio_skip(pb, mov->reserved_moov_size);

  6119.     }

  6120. 

  6121.     if (mov->flags & FF_MOV_FLAG_FRAGMENT) {

  6122.         /* If no fragmentation options have been set, set a default. */

  6123.         if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |

  6124.                             FF_MOV_FLAG_FRAG_CUSTOM)) &&

  6125.             !mov->max_fragment_duration && !mov->max_fragment_size)

  6126.             mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME;

  6127.     } else {

  6128.         if (mov->flags & FF_MOV_FLAG_FASTSTART)

  6129.             mov->reserved_header_pos = avio_tell(pb);

  6130.         mov_write_mdat_tag(pb, mov);

  6131.     }

  6132. 

  6133.     ff_parse_creation_time_metadata(s, &mov->time, 1);

  6134.     if (mov->time)

  6135.         mov->time += 0x7C25B080; // 1970 based -> 1904 based

  6136. 

  6137.     if (mov->chapter_track)

  6138.         if ((ret = mov_create_chapter_track(s, mov->chapter_track)) < 0)

  6139.             return ret;

  6140. 

  6141.     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {

  6142.         /* Initialize the hint tracks for each audio and video stream */

  6143.         for (i = 0; i < s->nb_streams; i++) {

  6144.             AVStream *st = s->streams[i];

  6145.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||

  6146.                 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  6147.                 if ((ret = ff_mov_init_hinting(s, hint_track, i)) < 0)

  6148.                     return ret;

  6149.                 hint_track++;

  6150.             }

  6151.         }

  6152.     }

  6153. 

  6154.     if (mov->nb_meta_tmcd) {

  6155.         /* Initialize the tmcd tracks */

  6156.         for (i = 0; i < s->nb_streams; i++) {

  6157.             AVStream *st = s->streams[i];

  6158.             t = global_tcr;

  6159. 

  6160.             if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {

  6161.                 AVTimecode tc;

  6162.                 if (!t)

  6163.                     t = av_dict_get(st->metadata, "timecode", NULL, 0);

  6164.                 if (!t)

  6165.                     continue;

  6166.                 if (mov_check_timecode_track(s, &tc, i, t->value) < 0)

  6167.                     continue;

  6168.                 if ((ret = mov_create_timecode_track(s, tmcd_track, i, tc)) < 0)

  6169.                     return ret;

  6170.                 tmcd_track++;

  6171.             }

  6172.         }

  6173.     }

  6174. 

  6175.     avio_flush(pb);

  6176. 

  6177.     if (mov->flags & FF_MOV_FLAG_ISML)

  6178.         mov_write_isml_manifest(pb, mov, s);

  6179. 

  6180.     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&

  6181.         !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {

  6182.         if ((ret = mov_write_moov_tag(pb, mov, s)) < 0)

  6183.             return ret;

  6184.         avio_flush(pb);

  6185.         mov->moov_written = 1;

  6186.         if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)

  6187.             mov->reserved_header_pos = avio_tell(pb);

  6188.     }

  6189. 

  6190.     return 0;

  6191. }

  6192. 

  6193. static int get_moov_size(AVFormatContext *s)

  6194. {

  6195.     int ret;

  6196.     AVIOContext *moov_buf;

  6197.     MOVMuxContext *mov = s->priv_data;

  6198. 

  6199.     if ((ret = ffio_open_null_buf(&moov_buf)) < 0)

  6200.         return ret;

  6201.     if ((ret = mov_write_moov_tag(moov_buf, mov, s)) < 0)

  6202.         return ret;

  6203.     return ffio_close_null_buf(moov_buf);

  6204. }

  6205. 

  6206. static int get_sidx_size(AVFormatContext *s)

  6207. {

  6208.     int ret;

  6209.     AVIOContext *buf;

  6210.     MOVMuxContext *mov = s->priv_data;

  6211. 

  6212.     if ((ret = ffio_open_null_buf(&buf)) < 0)

  6213.         return ret;

  6214.     mov_write_sidx_tags(buf, mov, -1, 0);

  6215.     return ffio_close_null_buf(buf);

  6216. }

  6217. 

  6218. /*

  6219.  * This function gets the moov size if moved to the top of the file: the chunk

  6220.  * offset table can switch between stco (32-bit entries) to co64 (64-bit

  6221.  * entries) when the moov is moved to the beginning, so the size of the moov

  6222.  * would change. It also updates the chunk offset tables.

  6223.  */

  6224. static int compute_moov_size(AVFormatContext *s)

  6225. {

  6226.     int i, moov_size, moov_size2;

  6227.     MOVMuxContext *mov = s->priv_data;

  6228. 

  6229.     moov_size = get_moov_size(s);

  6230.     if (moov_size < 0)

  6231.         return moov_size;

  6232. 

  6233.     for (i = 0; i < mov->nb_streams; i++)

  6234.         mov->tracks[i].data_offset += moov_size;

  6235. 

  6236.     moov_size2 = get_moov_size(s);

  6237.     if (moov_size2 < 0)

  6238.         return moov_size2;

  6239. 

  6240.     /* if the size changed, we just switched from stco to co64 and need to

  6241.      * update the offsets */

  6242.     if (moov_size2 != moov_size)

  6243.         for (i = 0; i < mov->nb_streams; i++)

  6244.             mov->tracks[i].data_offset += moov_size2 - moov_size;

  6245. 

  6246.     return moov_size2;

  6247. }

  6248. 

  6249. static int compute_sidx_size(AVFormatContext *s)

  6250. {

  6251.     int i, sidx_size;

  6252.     MOVMuxContext *mov = s->priv_data;

  6253. 

  6254.     sidx_size = get_sidx_size(s);

  6255.     if (sidx_size < 0)

  6256.         return sidx_size;

  6257. 

  6258.     for (i = 0; i < mov->nb_streams; i++)

  6259.         mov->tracks[i].data_offset += sidx_size;

  6260. 

  6261.     return sidx_size;

  6262. }

  6263. 

  6264. static int shift_data(AVFormatContext *s)

  6265. {

  6266.     int ret = 0, moov_size;

  6267.     MOVMuxContext *mov = s->priv_data;

  6268.     int64_t pos, pos_end = avio_tell(s->pb);

  6269.     uint8_t *buf, *read_buf[2];

  6270.     int read_buf_id = 0;

  6271.     int read_size[2];

  6272.     AVIOContext *read_pb;

  6273. 

  6274.     if (mov->flags & FF_MOV_FLAG_FRAGMENT)

  6275.         moov_size = compute_sidx_size(s);

  6276.     else

  6277.         moov_size = compute_moov_size(s);

  6278.     if (moov_size < 0)

  6279.         return moov_size;

  6280. 

  6281.     buf = av_malloc(moov_size * 2);

  6282.     if (!buf)

  6283.         return AVERROR(ENOMEM);

  6284.     read_buf[0] = buf;

  6285.     read_buf[1] = buf + moov_size;

  6286. 

  6287.     /* Shift the data: the AVIO context of the output can only be used for

  6288.      * writing, so we re-open the same output, but for reading. It also avoids

  6289.      * a read/seek/write/seek back and forth. */

  6290.     avio_flush(s->pb);

  6291.     ret = s->io_open(s, &read_pb, s->filename, AVIO_FLAG_READ, NULL);

  6292.     if (ret < 0) {

  6293.         av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for "

  6294.                "the second pass (faststart)\n", s->filename);

  6295.         goto end;

  6296.     }

  6297. 

  6298.     /* mark the end of the shift to up to the last data we wrote, and get ready

  6299.      * for writing */

  6300.     pos_end = avio_tell(s->pb);

  6301.     avio_seek(s->pb, mov->reserved_header_pos + moov_size, SEEK_SET);

  6302. 

  6303.     /* start reading at where the new moov will be placed */

  6304.     avio_seek(read_pb, mov->reserved_header_pos, SEEK_SET);

  6305.     pos = avio_tell(read_pb);

  6306. 

  6307. #define READ_BLOCK do {                                                             \

  6308.     read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], moov_size);  \

  6309.     read_buf_id ^= 1;                                                               \

  6310. } while (0)

  6311. 

  6312.     /* shift data by chunk of at most moov_size */

  6313.     READ_BLOCK;

  6314.     do {

  6315.         int n;

  6316.         READ_BLOCK;

  6317.         n = read_size[read_buf_id];

  6318.         if (n <= 0)

  6319.             break;

  6320.         avio_write(s->pb, read_buf[read_buf_id], n);

  6321.         pos += n;

  6322.     } while (pos < pos_end);

  6323.     ff_format_io_close(s, &read_pb);

  6324. 

  6325. end:

  6326.     av_free(buf);

  6327.     return ret;

  6328. }

  6329. 

  6330. static int mov_write_trailer(AVFormatContext *s)

  6331. {

  6332.     MOVMuxContext *mov = s->priv_data;

  6333.     AVIOContext *pb = s->pb;

  6334.     int res = 0;

  6335.     int i;

  6336.     int64_t moov_pos;

  6337. 

  6338.     if (mov->need_rewrite_extradata) {

  6339.         for (i = 0; i < s->nb_streams; i++) {

  6340.             MOVTrack *track = &mov->tracks[i];

  6341.             AVCodecParameters *par = track->par;

  6342. 

  6343.             track->vos_len  = par->extradata_size;

  6344.             track->vos_data = av_malloc(track->vos_len);

  6345.             if (!track->vos_data)

  6346.                 return AVERROR(ENOMEM);

  6347.             memcpy(track->vos_data, par->extradata, track->vos_len);

  6348.         }

  6349.         mov->need_rewrite_extradata = 0;

  6350.     }

  6351. 

  6352.     /*

  6353.      * Before actually writing the trailer, make sure that there are no

  6354.      * dangling subtitles, that need a terminating sample.

  6355.      */

  6356.     for (i = 0; i < mov->nb_streams; i++) {

  6357.         MOVTrack *trk = &mov->tracks[i];

  6358.         if (trk->par->codec_id == AV_CODEC_ID_MOV_TEXT &&

  6359.             !trk->last_sample_is_subtitle_end) {

  6360.             mov_write_subtitle_end_packet(s, i, trk->track_duration);

  6361.             trk->last_sample_is_subtitle_end = 1;

  6362.         }

  6363.     }

  6364. 

  6365.     // If there were no chapters when the header was written, but there

  6366.     // are chapters now, write them in the trailer.  This only works

  6367.     // when we are not doing fragments.

  6368.     if (!mov->chapter_track && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {

  6369.         if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) {

  6370.             mov->chapter_track = mov->nb_streams++;

  6371.             if ((res = mov_create_chapter_track(s, mov->chapter_track)) < 0)

  6372.                 return res;

  6373.         }

  6374.     }

  6375. 

  6376.     if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {

  6377.         moov_pos = avio_tell(pb);

  6378. 

  6379.         /* Write size of mdat tag */

  6380.         if (mov->mdat_size + 8 <= UINT32_MAX) {

  6381.             avio_seek(pb, mov->mdat_pos, SEEK_SET);

  6382.             avio_wb32(pb, mov->mdat_size + 8);

  6383.         } else {

  6384.             /* overwrite 'wide' placeholder atom */

  6385.             avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);

  6386.             /* special value: real atom size will be 64 bit value after

  6387.              * tag field */

  6388.             avio_wb32(pb, 1);

  6389.             ffio_wfourcc(pb, "mdat");

  6390.             avio_wb64(pb, mov->mdat_size + 16);

  6391.         }

  6392.         avio_seek(pb, mov->reserved_moov_size > 0 ? mov->reserved_header_pos : moov_pos, SEEK_SET);

  6393. 

  6394.         if (mov->flags & FF_MOV_FLAG_FASTSTART) {

  6395.             av_log(s, AV_LOG_INFO, "Starting second pass: moving the moov atom to the beginning of the file\n");

  6396.             res = shift_data(s);

  6397.             if (res < 0)

  6398.                 return res;

  6399.             avio_seek(pb, mov->reserved_header_pos, SEEK_SET);

  6400.             if ((res = mov_write_moov_tag(pb, mov, s)) < 0)

  6401.                 return res;

  6402.         } else if (mov->reserved_moov_size > 0) {

  6403.             int64_t size;

  6404.             if ((res = mov_write_moov_tag(pb, mov, s)) < 0)

  6405.                 return res;

  6406.             size = mov->reserved_moov_size - (avio_tell(pb) - mov->reserved_header_pos);

  6407.             if (size < 8){

  6408.                 av_log(s, AV_LOG_ERROR, "reserved_moov_size is too small, needed %"PRId64" additional\n", 8-size);

  6409.                 return AVERROR(EINVAL);

  6410.             }

  6411.             avio_wb32(pb, size);

  6412.             ffio_wfourcc(pb, "free");

  6413.             ffio_fill(pb, 0, size - 8);

  6414.             avio_seek(pb, moov_pos, SEEK_SET);

  6415.         } else {

  6416.             if ((res = mov_write_moov_tag(pb, mov, s)) < 0)

  6417.                 return res;

  6418.         }

  6419.         res = 0;

  6420.     } else {

  6421.         mov_auto_flush_fragment(s, 1);

  6422.         for (i = 0; i < mov->nb_streams; i++)

  6423.            mov->tracks[i].data_offset = 0;

  6424.         if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX) {

  6425.             int64_t end;

  6426.             av_log(s, AV_LOG_INFO, "Starting second pass: inserting sidx atoms\n");

  6427.             res = shift_data(s);

  6428.             if (res < 0)

  6429.                 return res;

  6430.             end = avio_tell(pb);

  6431.             avio_seek(pb, mov->reserved_header_pos, SEEK_SET);

  6432.             mov_write_sidx_tags(pb, mov, -1, 0);

  6433.             avio_seek(pb, end, SEEK_SET);

  6434.             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);

  6435.             mov_write_mfra_tag(pb, mov);

  6436.         } else if (!(mov->flags & FF_MOV_FLAG_SKIP_TRAILER)) {

  6437.             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);

  6438.             mov_write_mfra_tag(pb, mov);

  6439.         }

  6440.     }

  6441. 

  6442.     return res;

  6443. }

  6444. 

  6445. static int mov_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)

  6446. {

  6447.     int ret = 1;

  6448.     AVStream *st = s->streams[pkt->stream_index];

  6449. 

  6450.     if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {

  6451.         if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)

  6452.             ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);

  6453.     } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {

  6454.         ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);

  6455.     }

  6456. 

  6457.     return ret;

  6458. }

  6459. 

  6460. static const AVCodecTag codec_3gp_tags[] = {

  6461.     { AV_CODEC_ID_H263,     MKTAG('s','2','6','3') },

  6462.     { AV_CODEC_ID_H264,     MKTAG('a','v','c','1') },

  6463.     { AV_CODEC_ID_MPEG4,    MKTAG('m','p','4','v') },

  6464.     { AV_CODEC_ID_AAC,      MKTAG('m','p','4','a') },

  6465.     { AV_CODEC_ID_AMR_NB,   MKTAG('s','a','m','r') },

  6466.     { AV_CODEC_ID_AMR_WB,   MKTAG('s','a','w','b') },

  6467.     { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },

  6468.     { AV_CODEC_ID_NONE, 0 },

  6469. };

  6470. 

  6471. const AVCodecTag codec_mp4_tags[] = {

  6472.     { AV_CODEC_ID_MPEG4       , MKTAG('m', 'p', '4', 'v') },

  6473.     { AV_CODEC_ID_H264        , MKTAG('a', 'v', 'c', '1') },

  6474.     { AV_CODEC_ID_HEVC        , MKTAG('h', 'e', 'v', '1') },

  6475.     { AV_CODEC_ID_HEVC        , MKTAG('h', 'v', 'c', '1') },

  6476.     { AV_CODEC_ID_MPEG2VIDEO  , MKTAG('m', 'p', '4', 'v') },

  6477.     { AV_CODEC_ID_MPEG1VIDEO  , MKTAG('m', 'p', '4', 'v') },

  6478.     { AV_CODEC_ID_MJPEG       , MKTAG('m', 'p', '4', 'v') },

  6479.     { AV_CODEC_ID_PNG         , MKTAG('m', 'p', '4', 'v') },

  6480.     { AV_CODEC_ID_JPEG2000    , MKTAG('m', 'p', '4', 'v') },

  6481.     { AV_CODEC_ID_VC1         , MKTAG('v', 'c', '-', '1') },

  6482.     { AV_CODEC_ID_DIRAC       , MKTAG('d', 'r', 'a', 'c') },

  6483.     { AV_CODEC_ID_TSCC2       , MKTAG('m', 'p', '4', 'v') },

  6484.     { AV_CODEC_ID_VP9         , MKTAG('v', 'p', '0', '9') },

  6485.     { AV_CODEC_ID_AAC         , MKTAG('m', 'p', '4', 'a') },

  6486.     { AV_CODEC_ID_MP4ALS      , MKTAG('m', 'p', '4', 'a') },

  6487.     { AV_CODEC_ID_MP3         , MKTAG('m', 'p', '4', 'a') },

  6488.     { AV_CODEC_ID_MP2         , MKTAG('m', 'p', '4', 'a') },

  6489.     { AV_CODEC_ID_AC3         , MKTAG('a', 'c', '-', '3') },

  6490.     { AV_CODEC_ID_EAC3        , MKTAG('e', 'c', '-', '3') },

  6491.     { AV_CODEC_ID_DTS         , MKTAG('m', 'p', '4', 'a') },

  6492.     { AV_CODEC_ID_FLAC        , MKTAG('f', 'L', 'a', 'C') },

  6493.     { AV_CODEC_ID_OPUS        , MKTAG('O', 'p', 'u', 's') },

  6494.     { AV_CODEC_ID_VORBIS      , MKTAG('m', 'p', '4', 'a') },

  6495.     { AV_CODEC_ID_QCELP       , MKTAG('m', 'p', '4', 'a') },

  6496.     { AV_CODEC_ID_EVRC        , MKTAG('m', 'p', '4', 'a') },

  6497.     { AV_CODEC_ID_DVD_SUBTITLE, MKTAG('m', 'p', '4', 's') },

  6498.     { AV_CODEC_ID_MOV_TEXT    , MKTAG('t', 'x', '3', 'g') },

  6499.     { AV_CODEC_ID_NONE        ,    0 },

  6500. };

  6501. 

  6502. const AVCodecTag codec_ism_tags[] = {

  6503.     { AV_CODEC_ID_WMAPRO      , MKTAG('w', 'm', 'a', ' ') },

  6504.     { AV_CODEC_ID_NONE        ,    0 },

  6505. };

  6506. 

  6507. static const AVCodecTag codec_ipod_tags[] = {

  6508.     { AV_CODEC_ID_H264,     MKTAG('a','v','c','1') },

  6509.     { AV_CODEC_ID_MPEG4,    MKTAG('m','p','4','v') },

  6510.     { AV_CODEC_ID_AAC,      MKTAG('m','p','4','a') },

  6511.     { AV_CODEC_ID_ALAC,     MKTAG('a','l','a','c') },

  6512.     { AV_CODEC_ID_AC3,      MKTAG('a','c','-','3') },

  6513.     { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },

  6514.     { AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },

  6515.     { AV_CODEC_ID_NONE, 0 },

  6516. };

  6517. 

  6518. static const AVCodecTag codec_f4v_tags[] = {

  6519.     { AV_CODEC_ID_MP3,    MKTAG('.','m','p','3') },

  6520.     { AV_CODEC_ID_AAC,    MKTAG('m','p','4','a') },

  6521.     { AV_CODEC_ID_H264,   MKTAG('a','v','c','1') },

  6522.     { AV_CODEC_ID_VP6A,   MKTAG('V','P','6','A') },

  6523.     { AV_CODEC_ID_VP6F,   MKTAG('V','P','6','F') },

  6524.     { AV_CODEC_ID_NONE, 0 },

  6525. };

  6526. 

  6527. #if CONFIG_MOV_MUXER

  6528. MOV_CLASS(mov)

  6529. AVOutputFormat ff_mov_muxer = {

  6530.     .name              = "mov",

  6531.     .long_name         = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),

  6532.     .extensions        = "mov",

  6533.     .priv_data_size    = sizeof(MOVMuxContext),

  6534.     .audio_codec       = AV_CODEC_ID_AAC,

  6535.     .video_codec       = CONFIG_LIBX264_ENCODER ?

  6536.                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,

  6537.     .init              = mov_init,

  6538.     .write_header      = mov_write_header,

  6539.     .write_packet      = mov_write_packet,

  6540.     .write_trailer     = mov_write_trailer,

  6541.     .deinit            = mov_free,

  6542.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6543.     .codec_tag         = (const AVCodecTag* const []){

  6544.         ff_codec_movvideo_tags, ff_codec_movaudio_tags, 0

  6545.     },

  6546.     .check_bitstream   = mov_check_bitstream,

  6547.     .priv_class        = &mov_muxer_class,

  6548. };

  6549. #endif

  6550. #if CONFIG_TGP_MUXER

  6551. MOV_CLASS(tgp)

  6552. AVOutputFormat ff_tgp_muxer = {

  6553.     .name              = "3gp",

  6554.     .long_name         = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),

  6555.     .extensions        = "3gp",

  6556.     .priv_data_size    = sizeof(MOVMuxContext),

  6557.     .audio_codec       = AV_CODEC_ID_AMR_NB,

  6558.     .video_codec       = AV_CODEC_ID_H263,

  6559.     .init              = mov_init,

  6560.     .write_header      = mov_write_header,

  6561.     .write_packet      = mov_write_packet,

  6562.     .write_trailer     = mov_write_trailer,

  6563.     .deinit            = mov_free,

  6564.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6565.     .codec_tag         = (const AVCodecTag* const []){ codec_3gp_tags, 0 },

  6566.     .check_bitstream   = mov_check_bitstream,

  6567.     .priv_class        = &tgp_muxer_class,

  6568. };

  6569. #endif

  6570. #if CONFIG_MP4_MUXER

  6571. MOV_CLASS(mp4)

  6572. AVOutputFormat ff_mp4_muxer = {

  6573.     .name              = "mp4",

  6574.     .long_name         = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),

  6575.     .mime_type         = "video/mp4",

  6576.     .extensions        = "mp4",

  6577.     .priv_data_size    = sizeof(MOVMuxContext),

  6578.     .audio_codec       = AV_CODEC_ID_AAC,

  6579.     .video_codec       = CONFIG_LIBX264_ENCODER ?

  6580.                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,

  6581.     .init              = mov_init,

  6582.     .write_header      = mov_write_header,

  6583.     .write_packet      = mov_write_packet,

  6584.     .write_trailer     = mov_write_trailer,

  6585.     .deinit            = mov_free,

  6586.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6587.     .codec_tag         = (const AVCodecTag* const []){ codec_mp4_tags, 0 },

  6588.     .check_bitstream   = mov_check_bitstream,

  6589.     .priv_class        = &mp4_muxer_class,

  6590. };

  6591. #endif

  6592. #if CONFIG_PSP_MUXER

  6593. MOV_CLASS(psp)

  6594. AVOutputFormat ff_psp_muxer = {

  6595.     .name              = "psp",

  6596.     .long_name         = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),

  6597.     .extensions        = "mp4,psp",

  6598.     .priv_data_size    = sizeof(MOVMuxContext),

  6599.     .audio_codec       = AV_CODEC_ID_AAC,

  6600.     .video_codec       = CONFIG_LIBX264_ENCODER ?

  6601.                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,

  6602.     .init              = mov_init,

  6603.     .write_header      = mov_write_header,

  6604.     .write_packet      = mov_write_packet,

  6605.     .write_trailer     = mov_write_trailer,

  6606.     .deinit            = mov_free,

  6607.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6608.     .codec_tag         = (const AVCodecTag* const []){ codec_mp4_tags, 0 },

  6609.     .check_bitstream   = mov_check_bitstream,

  6610.     .priv_class        = &psp_muxer_class,

  6611. };

  6612. #endif

  6613. #if CONFIG_TG2_MUXER

  6614. MOV_CLASS(tg2)

  6615. AVOutputFormat ff_tg2_muxer = {

  6616.     .name              = "3g2",

  6617.     .long_name         = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),

  6618.     .extensions        = "3g2",

  6619.     .priv_data_size    = sizeof(MOVMuxContext),

  6620.     .audio_codec       = AV_CODEC_ID_AMR_NB,

  6621.     .video_codec       = AV_CODEC_ID_H263,

  6622.     .init              = mov_init,

  6623.     .write_header      = mov_write_header,

  6624.     .write_packet      = mov_write_packet,

  6625.     .write_trailer     = mov_write_trailer,

  6626.     .deinit            = mov_free,

  6627.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6628.     .codec_tag         = (const AVCodecTag* const []){ codec_3gp_tags, 0 },

  6629.     .check_bitstream   = mov_check_bitstream,

  6630.     .priv_class        = &tg2_muxer_class,

  6631. };

  6632. #endif

  6633. #if CONFIG_IPOD_MUXER

  6634. MOV_CLASS(ipod)

  6635. AVOutputFormat ff_ipod_muxer = {

  6636.     .name              = "ipod",

  6637.     .long_name         = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),

  6638.     .mime_type         = "video/mp4",

  6639.     .extensions        = "m4v,m4a",

  6640.     .priv_data_size    = sizeof(MOVMuxContext),

  6641.     .audio_codec       = AV_CODEC_ID_AAC,

  6642.     .video_codec       = AV_CODEC_ID_H264,

  6643.     .init              = mov_init,

  6644.     .write_header      = mov_write_header,

  6645.     .write_packet      = mov_write_packet,

  6646.     .write_trailer     = mov_write_trailer,

  6647.     .deinit            = mov_free,

  6648.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6649.     .codec_tag         = (const AVCodecTag* const []){ codec_ipod_tags, 0 },

  6650.     .check_bitstream   = mov_check_bitstream,

  6651.     .priv_class        = &ipod_muxer_class,

  6652. };

  6653. #endif

  6654. #if CONFIG_ISMV_MUXER

  6655. MOV_CLASS(ismv)

  6656. AVOutputFormat ff_ismv_muxer = {

  6657.     .name              = "ismv",

  6658.     .long_name         = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),

  6659.     .mime_type         = "video/mp4",

  6660.     .extensions        = "ismv,isma",

  6661.     .priv_data_size    = sizeof(MOVMuxContext),

  6662.     .audio_codec       = AV_CODEC_ID_AAC,

  6663.     .video_codec       = AV_CODEC_ID_H264,

  6664.     .init              = mov_init,

  6665.     .write_header      = mov_write_header,

  6666.     .write_packet      = mov_write_packet,

  6667.     .write_trailer     = mov_write_trailer,

  6668.     .deinit            = mov_free,

  6669.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,

  6670.     .codec_tag         = (const AVCodecTag* const []){

  6671.         codec_mp4_tags, codec_ism_tags, 0 },

  6672.     .check_bitstream   = mov_check_bitstream,

  6673.     .priv_class        = &ismv_muxer_class,

  6674. };

  6675. #endif

  6676. #if CONFIG_F4V_MUXER

  6677. MOV_CLASS(f4v)

  6678. AVOutputFormat ff_f4v_muxer = {

  6679.     .name              = "f4v",

  6680.     .long_name         = NULL_IF_CONFIG_SMALL("F4V Adobe Flash Video"),

  6681.     .mime_type         = "application/f4v",

  6682.     .extensions        = "f4v",

  6683.     .priv_data_size    = sizeof(MOVMuxContext),

  6684.     .audio_codec       = AV_CODEC_ID_AAC,

  6685.     .video_codec       = AV_CODEC_ID_H264,

  6686.     .init              = mov_init,

  6687.     .write_header      = mov_write_header,

  6688.     .write_packet      = mov_write_packet,

  6689.     .write_trailer     = mov_write_trailer,

  6690.     .deinit            = mov_free,

  6691.     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,

  6692.     .codec_tag         = (const AVCodecTag* const []){ codec_f4v_tags, 0 },

  6693.     .check_bitstream   = mov_check_bitstream,

  6694.     .priv_class        = &f4v_muxer_class,

  6695. };

  6696. #endif