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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 "movenc.h"

  25. #include "avformat.h"

  26. #include "riff.h"

  27. #include "avio.h"

  28. #include "isom.h"

  29. #include "avc.h"

  30. #include "libavcodec/get_bits.h"

  31. #include "libavcodec/put_bits.h"

  32. #include "internal.h"

  33. #include "libavutil/avstring.h"

  34. 

  35. #undef NDEBUG

  36. #include <assert.h>

  37. 

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

  39. static int64_t updateSize(ByteIOContext *pb, int64_t pos)

  40. {

  41.     int64_t curpos = url_ftell(pb);

  42.     url_fseek(pb, pos, SEEK_SET);

  43.     put_be32(pb, curpos - pos); /* rewrite size */

  44.     url_fseek(pb, curpos, SEEK_SET);

  45. 

  46.     return curpos - pos;

  47. }

  48. 

  49. /* Chunk offset atom */

  50. static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack *track)

  51. {

  52.     int i;

  53.     int mode64 = 0; //   use 32 bit size variant if possible

  54.     int64_t pos = url_ftell(pb);

  55.     put_be32(pb, 0); /* size */

  56.     if (pos > UINT32_MAX) {

  57.         mode64 = 1;

  58.         put_tag(pb, "co64");

  59.     } else

  60.         put_tag(pb, "stco");

  61.     put_be32(pb, 0); /* version & flags */

  62.     put_be32(pb, track->entry); /* entry count */

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

  64.         if(mode64 == 1)

  65.             put_be64(pb, track->cluster[i].pos);

  66.         else

  67.             put_be32(pb, track->cluster[i].pos);

  68.     }

  69.     return updateSize(pb, pos);

  70. }

  71. 

  72. /* Sample size atom */

  73. static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack *track)

  74. {

  75.     int equalChunks = 1;

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

  77. 

  78.     int64_t pos = url_ftell(pb);

  79.     put_be32(pb, 0); /* size */

  80.     put_tag(pb, "stsz");

  81.     put_be32(pb, 0); /* version & flags */

  82. 

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

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

  85.         if(oldtst != -1 && tst != oldtst) {

  86.             equalChunks = 0;

  87.         }

  88.         oldtst = tst;

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

  90.     }

  91.     if (equalChunks) {

  92.         int sSize = track->cluster[0].size/track->cluster[0].entries;

  93.         put_be32(pb, sSize); // sample size

  94.         put_be32(pb, entries); // sample count

  95.     }

  96.     else {

  97.         put_be32(pb, 0); // sample size

  98.         put_be32(pb, entries); // sample count

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

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

  101.                 put_be32(pb, track->cluster[i].size /

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

  103.             }

  104.         }

  105.     }

  106.     return updateSize(pb, pos);

  107. }

  108. 

  109. /* Sample to chunk atom */

  110. static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack *track)

  111. {

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

  113.     int64_t entryPos, curpos;

  114. 

  115.     int64_t pos = url_ftell(pb);

  116.     put_be32(pb, 0); /* size */

  117.     put_tag(pb, "stsc");

  118.     put_be32(pb, 0); // version & flags

  119.     entryPos = url_ftell(pb);

  120.     put_be32(pb, track->entry); // entry count

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

  122.         if(oldval != track->cluster[i].samplesInChunk)

  123.         {

  124.             put_be32(pb, i+1); // first chunk

  125.             put_be32(pb, track->cluster[i].samplesInChunk); // samples per chunk

  126.             put_be32(pb, 0x1); // sample description index

  127.             oldval = track->cluster[i].samplesInChunk;

  128.             index++;

  129.         }

  130.     }

  131.     curpos = url_ftell(pb);

  132.     url_fseek(pb, entryPos, SEEK_SET);

  133.     put_be32(pb, index); // rewrite size

  134.     url_fseek(pb, curpos, SEEK_SET);

  135. 

  136.     return updateSize(pb, pos);

  137. }

  138. 

  139. /* Sync sample atom */

  140. static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack *track, uint32_t flag)

  141. {

  142.     int64_t curpos, entryPos;

  143.     int i, index = 0;

  144.     int64_t pos = url_ftell(pb);

  145.     put_be32(pb, 0); // size

  146.     put_tag(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");

  147.     put_be32(pb, 0); // version & flags

  148.     entryPos = url_ftell(pb);

  149.     put_be32(pb, track->entry); // entry count

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

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

  152.             put_be32(pb, i+1);

  153.             index++;

  154.         }

  155.     }

  156.     curpos = url_ftell(pb);

  157.     url_fseek(pb, entryPos, SEEK_SET);

  158.     put_be32(pb, index); // rewrite size

  159.     url_fseek(pb, curpos, SEEK_SET);

  160.     return updateSize(pb, pos);

  161. }

  162. 

  163. static int mov_write_amr_tag(ByteIOContext *pb, MOVTrack *track)

  164. {

  165.     put_be32(pb, 0x11); /* size */

  166.     if (track->mode == MODE_MOV) put_tag(pb, "samr");

  167.     else                         put_tag(pb, "damr");

  168.     put_tag(pb, "FFMP");

  169.     put_byte(pb, 0); /* decoder version */

  170. 

  171.     put_be16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */

  172.     put_byte(pb, 0x00); /* Mode change period (no restriction) */

  173.     put_byte(pb, 0x01); /* Frames per sample */

  174.     return 0x11;

  175. }

  176. 

  177. static int mov_write_ac3_tag(ByteIOContext *pb, MOVTrack *track)

  178. {

  179.     GetBitContext gbc;

  180.     PutBitContext pbc;

  181.     uint8_t buf[3];

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

  183. 

  184.     if (track->vosLen < 7)

  185.         return -1;

  186. 

  187.     put_be32(pb, 11);

  188.     put_tag(pb, "dac3");

  189. 

  190.     init_get_bits(&gbc, track->vosData+4, track->vosLen-4);

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

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

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

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

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

  196.     if (acmod == 2) {

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

  198.     } else {

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

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

  201.         if (acmod & 4)

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

  203.     }

  204.     lfeon = get_bits1(&gbc);

  205. 

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

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

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

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

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

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

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

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

  214. 

  215.     flush_put_bits(&pbc);

  216.     put_buffer(pb, buf, sizeof(buf));

  217. 

  218.     return 11;

  219. }

  220. 

  221. /**

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

  223.  * Extradata must be formated like a valid atom (with size and tag)

  224.  */

  225. static int mov_write_extradata_tag(ByteIOContext *pb, MOVTrack *track)

  226. {

  227.     put_buffer(pb, track->enc->extradata, track->enc->extradata_size);

  228.     return track->enc->extradata_size;

  229. }

  230. 

  231. static int mov_write_enda_tag(ByteIOContext *pb)

  232. {

  233.     put_be32(pb, 10);

  234.     put_tag(pb, "enda");

  235.     put_be16(pb, 1); /* little endian */

  236.     return 10;

  237. }

  238. 

  239. static unsigned int descrLength(unsigned int len)

  240. {

  241.     int i;

  242.     for(i=1; len>>(7*i); i++);

  243.     return len + 1 + i;

  244. }

  245. 

  246. static void putDescr(ByteIOContext *pb, int tag, unsigned int size)

  247. {

  248.     int i= descrLength(size) - size - 2;

  249.     put_byte(pb, tag);

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

  251.         put_byte(pb, (size>>(7*i)) | 0x80);

  252.     put_byte(pb, size & 0x7F);

  253. }

  254. 

  255. static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack *track) // Basic

  256. {

  257.     int64_t pos = url_ftell(pb);

  258.     int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;

  259. 

  260.     put_be32(pb, 0); // size

  261.     put_tag(pb, "esds");

  262.     put_be32(pb, 0); // Version

  263. 

  264.     // ES descriptor

  265.     putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +

  266.              descrLength(1));

  267.     put_be16(pb, track->trackID);

  268.     put_byte(pb, 0x00); // flags (= no flags)

  269. 

  270.     // DecoderConfig descriptor

  271.     putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);

  272. 

  273.     // Object type indication

  274.     if ((track->enc->codec_id == CODEC_ID_MP2 ||

  275.          track->enc->codec_id == CODEC_ID_MP3) &&

  276.         track->enc->sample_rate > 24000)

  277.         put_byte(pb, 0x6B); // 11172-3

  278.     else

  279.         put_byte(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));

  280. 

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

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

  283.     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)

  284.         put_byte(pb, 0x15); // flags (= Audiostream)

  285.     else

  286.         put_byte(pb, 0x11); // flags (= Visualstream)

  287. 

  288.     put_byte(pb,  track->enc->rc_buffer_size>>(3+16));    // Buffersize DB (24 bits)

  289.     put_be16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB

  290. 

  291.     put_be32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)

  292.     if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)

  293.         put_be32(pb, 0); // vbr

  294.     else

  295.         put_be32(pb, track->enc->rc_max_rate); // avg bitrate

  296. 

  297.     if (track->vosLen) {

  298.         // DecoderSpecific info descriptor

  299.         putDescr(pb, 0x05, track->vosLen);

  300.         put_buffer(pb, track->vosData, track->vosLen);

  301.     }

  302. 

  303.     // SL descriptor

  304.     putDescr(pb, 0x06, 1);

  305.     put_byte(pb, 0x02);

  306.     return updateSize(pb, pos);

  307. }

  308. 

  309. static int mov_pcm_le_gt16(enum CodecID codec_id)

  310. {

  311.     return codec_id == CODEC_ID_PCM_S24LE ||

  312.            codec_id == CODEC_ID_PCM_S32LE ||

  313.            codec_id == CODEC_ID_PCM_F32LE ||

  314.            codec_id == CODEC_ID_PCM_F64LE;

  315. }

  316. 

  317. static int mov_write_wave_tag(ByteIOContext *pb, MOVTrack *track)

  318. {

  319.     int64_t pos = url_ftell(pb);

  320. 

  321.     put_be32(pb, 0);     /* size */

  322.     put_tag(pb, "wave");

  323. 

  324.     put_be32(pb, 12);    /* size */

  325.     put_tag(pb, "frma");

  326.     put_le32(pb, track->tag);

  327. 

  328.     if (track->enc->codec_id == CODEC_ID_AAC) {

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

  330.         put_be32(pb, 12); /* size */

  331.         put_tag(pb, "mp4a");

  332.         put_be32(pb, 0);

  333.         mov_write_esds_tag(pb, track);

  334.     } else if (mov_pcm_le_gt16(track->enc->codec_id)) {

  335.         mov_write_enda_tag(pb);

  336.     } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {

  337.         mov_write_amr_tag(pb, track);

  338.     } else if (track->enc->codec_id == CODEC_ID_AC3) {

  339.         mov_write_ac3_tag(pb, track);

  340.     } else if (track->enc->codec_id == CODEC_ID_ALAC) {

  341.         mov_write_extradata_tag(pb, track);

  342.     }

  343. 

  344.     put_be32(pb, 8);     /* size */

  345.     put_be32(pb, 0);     /* null tag */

  346. 

  347.     return updateSize(pb, pos);

  348. }

  349. 

  350. static int mov_write_glbl_tag(ByteIOContext *pb, MOVTrack *track)

  351. {

  352.     put_be32(pb, track->vosLen+8);

  353.     put_tag(pb, "glbl");

  354.     put_buffer(pb, track->vosData, track->vosLen);

  355.     return 8+track->vosLen;

  356. }

  357. 

  358. /**

  359.  * Compute flags for 'lpcm' tag.

  360.  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.

  361.  */

  362. static int mov_get_lpcm_flags(enum CodecID codec_id)

  363. {

  364.     switch (codec_id) {

  365.     case CODEC_ID_PCM_F32BE:

  366.     case CODEC_ID_PCM_F64BE:

  367.         return 11;

  368.     case CODEC_ID_PCM_F32LE:

  369.     case CODEC_ID_PCM_F64LE:

  370.         return 9;

  371.     case CODEC_ID_PCM_U8:

  372.         return 10;

  373.     case CODEC_ID_PCM_S16BE:

  374.     case CODEC_ID_PCM_S24BE:

  375.     case CODEC_ID_PCM_S32BE:

  376.         return 14;

  377.     case CODEC_ID_PCM_S8:

  378.     case CODEC_ID_PCM_S16LE:

  379.     case CODEC_ID_PCM_S24LE:

  380.     case CODEC_ID_PCM_S32LE:

  381.         return 12;

  382.     default:

  383.         return 0;

  384.     }

  385. }

  386. 

  387. static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack *track)

  388. {

  389.     int64_t pos = url_ftell(pb);

  390.     int version = 0;

  391.     uint32_t tag = track->tag;

  392. 

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

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

  395.             if (mov_get_lpcm_flags(track->enc->codec_id))

  396.                 tag = AV_RL32("lpcm");

  397.             version = 2;

  398.         } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id)) {

  399.             version = 1;

  400.         }

  401.     }

  402. 

  403.     put_be32(pb, 0); /* size */

  404.     put_le32(pb, tag); // store it byteswapped

  405.     put_be32(pb, 0); /* Reserved */

  406.     put_be16(pb, 0); /* Reserved */

  407.     put_be16(pb, 1); /* Data-reference index, XXX  == 1 */

  408. 

  409.     /* SoundDescription */

  410.     put_be16(pb, version); /* Version */

  411.     put_be16(pb, 0); /* Revision level */

  412.     put_be32(pb, 0); /* Reserved */

  413. 

  414.     if (version == 2) {

  415.         put_be16(pb, 3);

  416.         put_be16(pb, 16);

  417.         put_be16(pb, 0xfffe);

  418.         put_be16(pb, 0);

  419.         put_be32(pb, 0x00010000);

  420.         put_be32(pb, 72);

  421.         put_be64(pb, av_dbl2int(track->timescale));

  422.         put_be32(pb, track->enc->channels);

  423.         put_be32(pb, 0x7F000000);

  424.         put_be32(pb, av_get_bits_per_sample(track->enc->codec_id));

  425.         put_be32(pb, mov_get_lpcm_flags(track->enc->codec_id));

  426.         put_be32(pb, track->sampleSize);

  427.         put_be32(pb, track->enc->frame_size);

  428.     } else {

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

  430.             put_be16(pb, track->enc->channels);

  431.             if (track->enc->codec_id == CODEC_ID_PCM_U8 ||

  432.                 track->enc->codec_id == CODEC_ID_PCM_S8)

  433.                 put_be16(pb, 8); /* bits per sample */

  434.             else

  435.                 put_be16(pb, 16);

  436.             put_be16(pb, track->audio_vbr ? -2 : 0); /* compression ID */

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

  438.             put_be16(pb, 2);

  439.             put_be16(pb, 16);

  440.             put_be16(pb, 0);

  441.         }

  442. 

  443.         put_be16(pb, 0); /* packet size (= 0) */

  444.         put_be16(pb, track->timescale); /* Time scale */

  445.         put_be16(pb, 0); /* Reserved */

  446.     }

  447. 

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

  449.         put_be32(pb, track->enc->frame_size); /* Samples per packet */

  450.         put_be32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */

  451.         put_be32(pb, track->sampleSize); /* Bytes per frame */

  452.         put_be32(pb, 2); /* Bytes per sample */

  453.     }

  454. 

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

  456.        (track->enc->codec_id == CODEC_ID_AAC ||

  457.         track->enc->codec_id == CODEC_ID_AC3 ||

  458.         track->enc->codec_id == CODEC_ID_AMR_NB ||

  459.         track->enc->codec_id == CODEC_ID_ALAC ||

  460.         mov_pcm_le_gt16(track->enc->codec_id)))

  461.         mov_write_wave_tag(pb, track);

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

  463.         mov_write_esds_tag(pb, track);

  464.     else if(track->enc->codec_id == CODEC_ID_AMR_NB)

  465.         mov_write_amr_tag(pb, track);

  466.     else if(track->enc->codec_id == CODEC_ID_AC3)

  467.         mov_write_ac3_tag(pb, track);

  468.     else if(track->enc->codec_id == CODEC_ID_ALAC)

  469.         mov_write_extradata_tag(pb, track);

  470.     else if(track->vosLen > 0)

  471.         mov_write_glbl_tag(pb, track);

  472. 

  473.     return updateSize(pb, pos);

  474. }

  475. 

  476. static int mov_write_d263_tag(ByteIOContext *pb)

  477. {

  478.     put_be32(pb, 0xf); /* size */

  479.     put_tag(pb, "d263");

  480.     put_tag(pb, "FFMP");

  481.     put_byte(pb, 0); /* decoder version */

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

  483.     put_byte(pb, 0xa); /* level */

  484.     put_byte(pb, 0); /* profile */

  485.     return 0xf;

  486. }

  487. 

  488. /* TODO: No idea about these values */

  489. static int mov_write_svq3_tag(ByteIOContext *pb)

  490. {

  491.     put_be32(pb, 0x15);

  492.     put_tag(pb, "SMI ");

  493.     put_tag(pb, "SEQH");

  494.     put_be32(pb, 0x5);

  495.     put_be32(pb, 0xe2c0211d);

  496.     put_be32(pb, 0xc0000000);

  497.     put_byte(pb, 0);

  498.     return 0x15;

  499. }

  500. 

  501. static int mov_write_avcc_tag(ByteIOContext *pb, MOVTrack *track)

  502. {

  503.     int64_t pos = url_ftell(pb);

  504. 

  505.     put_be32(pb, 0);

  506.     put_tag(pb, "avcC");

  507.     ff_isom_write_avcc(pb, track->vosData, track->vosLen);

  508.     return updateSize(pb, pos);

  509. }

  510. 

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

  512. static int mov_write_avid_tag(ByteIOContext *pb, MOVTrack *track)

  513. {

  514.     int i;

  515.     put_be32(pb, 24); /* size */

  516.     put_tag(pb, "ACLR");

  517.     put_tag(pb, "ACLR");

  518.     put_tag(pb, "0001");

  519.     put_be32(pb, 1); /* yuv 1 / rgb 2 ? */

  520.     put_be32(pb, 0); /* unknown */

  521. 

  522.     put_be32(pb, 24); /* size */

  523.     put_tag(pb, "APRG");

  524.     put_tag(pb, "APRG");

  525.     put_tag(pb, "0001");

  526.     put_be32(pb, 1); /* unknown */

  527.     put_be32(pb, 0); /* unknown */

  528. 

  529.     put_be32(pb, 120); /* size */

  530.     put_tag(pb, "ARES");

  531.     put_tag(pb, "ARES");

  532.     put_tag(pb, "0001");

  533.     put_be32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */

  534.     put_be32(pb, track->enc->width);

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

  536.     if (track->vosData[5] & 2) { // interlaced

  537.         put_be32(pb, track->enc->height/2);

  538.         put_be32(pb, 2); /* unknown */

  539.         put_be32(pb, 0); /* unknown */

  540.         put_be32(pb, 4); /* unknown */

  541.     } else {

  542.         put_be32(pb, track->enc->height);

  543.         put_be32(pb, 1); /* unknown */

  544.         put_be32(pb, 0); /* unknown */

  545.         if (track->enc->height == 1080)

  546.             put_be32(pb, 5); /* unknown */

  547.         else

  548.             put_be32(pb, 6); /* unknown */

  549.     }

  550.     /* padding */

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

  552.         put_be64(pb, 0);

  553. 

  554.     /* extra padding for stsd needed */

  555.     put_be32(pb, 0);

  556.     return 0;

  557. }

  558. 

  559. static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)

  560. {

  561.     int tag = track->enc->codec_tag;

  562. 

  563.     if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))

  564.         return 0;

  565. 

  566.     if      (track->enc->codec_id == CODEC_ID_H264)      tag = MKTAG('a','v','c','1');

  567.     else if (track->enc->codec_id == CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');

  568.     else if (track->enc->codec_id == CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');

  569.     else if (track->enc->codec_id == CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');

  570.     else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');

  571.     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');

  572. 

  573.     return tag;

  574. }

  575. 

  576. static const AVCodecTag codec_ipod_tags[] = {

  577.     { CODEC_ID_H264,   MKTAG('a','v','c','1') },

  578.     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },

  579.     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },

  580.     { CODEC_ID_ALAC,   MKTAG('a','l','a','c') },

  581.     { CODEC_ID_AC3,    MKTAG('a','c','-','3') },

  582.     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },

  583.     { CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },

  584.     { CODEC_ID_NONE, 0 },

  585. };

  586. 

  587. static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)

  588. {

  589.     int tag = track->enc->codec_tag;

  590. 

  591.     // keep original tag for subs, ipod supports both formats

  592.     if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&

  593.         (tag == MKTAG('t','x','3','g') ||

  594.          tag == MKTAG('t','e','x','t'))))

  595.         tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);

  596. 

  597.     if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))

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

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

  600. 

  601.     return tag;

  602. }

  603. 

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

  605. {

  606.     int tag;

  607. 

  608.     if (track->enc->height == 480) /* NTSC */

  609.         if  (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');

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

  611.     else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');

  612.     else if (track->enc->pix_fmt == PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');

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

  614. 

  615.     return tag;

  616. }

  617. 

  618. static const struct {

  619.     enum PixelFormat pix_fmt;

  620.     uint32_t tag;

  621.     unsigned bps;

  622. } mov_pix_fmt_tags[] = {

  623.     { PIX_FMT_YUYV422, MKTAG('y','u','v','s'),  0 },

  624.     { PIX_FMT_UYVY422, MKTAG('2','v','u','y'),  0 },

  625.     { PIX_FMT_BGR555,  MKTAG('r','a','w',' '), 16 },

  626.     { PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },

  627.     { PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },

  628.     { PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },

  629.     { PIX_FMT_RGB24,   MKTAG('r','a','w',' '), 24 },

  630.     { PIX_FMT_BGR24,   MKTAG('2','4','B','G'), 24 },

  631.     { PIX_FMT_ARGB,    MKTAG('r','a','w',' '), 32 },

  632.     { PIX_FMT_BGRA,    MKTAG('B','G','R','A'), 32 },

  633.     { PIX_FMT_RGBA,    MKTAG('R','G','B','A'), 32 },

  634. };

  635. 

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

  637. {

  638.     int tag = track->enc->codec_tag;

  639.     int i;

  640. 

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

  642.         if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {

  643.             tag = mov_pix_fmt_tags[i].tag;

  644.             track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;

  645.             break;

  646.         }

  647.     }

  648. 

  649.     return tag;

  650. }

  651. 

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

  653. {

  654.     int tag = track->enc->codec_tag;

  655. 

  656.     if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&

  657.                  (tag == MKTAG('d','v','c','p') ||

  658.                   track->enc->codec_id == CODEC_ID_RAWVIDEO ||

  659.                   av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio

  660.         if (track->enc->codec_id == CODEC_ID_DVVIDEO)

  661.             tag = mov_get_dv_codec_tag(s, track);

  662.         else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)

  663.             tag = mov_get_rawvideo_codec_tag(s, track);

  664.         else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {

  665.             tag = ff_codec_get_tag(codec_movvideo_tags, track->enc->codec_id);

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

  667.                 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);

  668.                 if (tag)

  669.                     av_log(s, AV_LOG_INFO, "Warning, using MS style video codec tag, "

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

  671.             }

  672.         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {

  673.             tag = ff_codec_get_tag(codec_movaudio_tags, track->enc->codec_id);

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

  675.                 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);

  676.                 if (ms_tag) {

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

  678.                     av_log(s, AV_LOG_INFO, "Warning, using MS style audio codec tag, "

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

  680.                 }

  681.             }

  682.         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)

  683.             tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);

  684.     }

  685. 

  686.     return tag;

  687. }

  688. 

  689. static const AVCodecTag codec_3gp_tags[] = {

  690.     { CODEC_ID_H263,   MKTAG('s','2','6','3') },

  691.     { CODEC_ID_H264,   MKTAG('a','v','c','1') },

  692.     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },

  693.     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },

  694.     { CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },

  695.     { CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },

  696.     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },

  697.     { CODEC_ID_NONE, 0 },

  698. };

  699. 

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

  701. {

  702.     int tag = track->enc->codec_tag;

  703. 

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

  705.         tag = mp4_get_codec_tag(s, track);

  706.     else if (track->mode == MODE_IPOD)

  707.         tag = ipod_get_codec_tag(s, track);

  708.     else if (track->mode & MODE_3GP)

  709.         tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);

  710.     else

  711.         tag = mov_get_codec_tag(s, track);

  712. 

  713.     return tag;

  714. }

  715. 

  716. /** Write uuid atom.

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

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

  719.  */

  720. static int mov_write_uuid_tag_ipod(ByteIOContext *pb)

  721. {

  722.     put_be32(pb, 28);

  723.     put_tag(pb, "uuid");

  724.     put_be32(pb, 0x6b6840f2);

  725.     put_be32(pb, 0x5f244fc5);

  726.     put_be32(pb, 0xba39a51b);

  727.     put_be32(pb, 0xcf0323f3);

  728.     put_be32(pb, 0x0);

  729.     return 28;

  730. }

  731. 

  732. static int mov_write_subtitle_tag(ByteIOContext *pb, MOVTrack *track)

  733. {

  734.     int64_t pos = url_ftell(pb);

  735.     put_be32(pb, 0);    /* size */

  736.     put_le32(pb, track->tag); // store it byteswapped

  737.     put_be32(pb, 0);    /* Reserved */

  738.     put_be16(pb, 0);    /* Reserved */

  739.     put_be16(pb, 1);    /* Data-reference index */

  740. 

  741.     if (track->enc->extradata_size)

  742.         put_buffer(pb, track->enc->extradata, track->enc->extradata_size);

  743. 

  744.     return updateSize(pb, pos);

  745. }

  746. 

  747. static int mov_write_video_tag(ByteIOContext *pb, MOVTrack *track)

  748. {

  749.     int64_t pos = url_ftell(pb);

  750.     char compressor_name[32];

  751. 

  752.     put_be32(pb, 0); /* size */

  753.     put_le32(pb, track->tag); // store it byteswapped

  754.     put_be32(pb, 0); /* Reserved */

  755.     put_be16(pb, 0); /* Reserved */

  756.     put_be16(pb, 1); /* Data-reference index */

  757. 

  758.     put_be16(pb, 0); /* Codec stream version */

  759.     put_be16(pb, 0); /* Codec stream revision (=0) */

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

  761.         put_tag(pb, "FFMP"); /* Vendor */

  762.         if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {

  763.             put_be32(pb, 0); /* Temporal Quality */

  764.             put_be32(pb, 0x400); /* Spatial Quality = lossless*/

  765.         } else {

  766.             put_be32(pb, 0x200); /* Temporal Quality = normal */

  767.             put_be32(pb, 0x200); /* Spatial Quality = normal */

  768.         }

  769.     } else {

  770.         put_be32(pb, 0); /* Reserved */

  771.         put_be32(pb, 0); /* Reserved */

  772.         put_be32(pb, 0); /* Reserved */

  773.     }

  774.     put_be16(pb, track->enc->width); /* Video width */

  775.     put_be16(pb, track->height); /* Video height */

  776.     put_be32(pb, 0x00480000); /* Horizontal resolution 72dpi */

  777.     put_be32(pb, 0x00480000); /* Vertical resolution 72dpi */

  778.     put_be32(pb, 0); /* Data size (= 0) */

  779.     put_be16(pb, 1); /* Frame count (= 1) */

  780. 

  781.     memset(compressor_name,0,32);

  782.     /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */

  783.     if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)

  784.         strncpy(compressor_name,track->enc->codec->name,31);

  785.     put_byte(pb, strlen(compressor_name));

  786.     put_buffer(pb, compressor_name, 31);

  787. 

  788.     if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)

  789.         put_be16(pb, track->enc->bits_per_coded_sample);

  790.     else

  791.         put_be16(pb, 0x18); /* Reserved */

  792.     put_be16(pb, 0xffff); /* Reserved */

  793.     if(track->tag == MKTAG('m','p','4','v'))

  794.         mov_write_esds_tag(pb, track);

  795.     else if(track->enc->codec_id == CODEC_ID_H263)

  796.         mov_write_d263_tag(pb);

  797.     else if(track->enc->codec_id == CODEC_ID_SVQ3)

  798.         mov_write_svq3_tag(pb);

  799.     else if(track->enc->codec_id == CODEC_ID_DNXHD)

  800.         mov_write_avid_tag(pb, track);

  801.     else if(track->enc->codec_id == CODEC_ID_H264) {

  802.         mov_write_avcc_tag(pb, track);

  803.         if(track->mode == MODE_IPOD)

  804.             mov_write_uuid_tag_ipod(pb);

  805.     } else if(track->vosLen > 0)

  806.         mov_write_glbl_tag(pb, track);

  807. 

  808.     return updateSize(pb, pos);

  809. }

  810. 

  811. static int mov_write_rtp_tag(ByteIOContext *pb, MOVTrack *track)

  812. {

  813.     int64_t pos = url_ftell(pb);

  814.     put_be32(pb, 0); /* size */

  815.     put_tag(pb, "rtp ");

  816.     put_be32(pb, 0); /* Reserved */

  817.     put_be16(pb, 0); /* Reserved */

  818.     put_be16(pb, 1); /* Data-reference index */

  819. 

  820.     put_be16(pb, 1); /* Hint track version */

  821.     put_be16(pb, 1); /* Highest compatible version */

  822.     put_be32(pb, track->max_packet_size); /* Max packet size */

  823. 

  824.     put_be32(pb, 12); /* size */

  825.     put_tag(pb, "tims");

  826.     put_be32(pb, track->timescale);

  827. 

  828.     return updateSize(pb, pos);

  829. }

  830. 

  831. static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack *track)

  832. {

  833.     int64_t pos = url_ftell(pb);

  834.     put_be32(pb, 0); /* size */

  835.     put_tag(pb, "stsd");

  836.     put_be32(pb, 0); /* version & flags */

  837.     put_be32(pb, 1); /* entry count */

  838.     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)

  839.         mov_write_video_tag(pb, track);

  840.     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)

  841.         mov_write_audio_tag(pb, track);

  842.     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)

  843.         mov_write_subtitle_tag(pb, track);

  844.     else if (track->enc->codec_tag == MKTAG('r','t','p',' '))

  845.         mov_write_rtp_tag(pb, track);

  846.     return updateSize(pb, pos);

  847. }

  848. 

  849. static int mov_write_ctts_tag(ByteIOContext *pb, MOVTrack *track)

  850. {

  851.     MOVStts *ctts_entries;

  852.     uint32_t entries = 0;

  853.     uint32_t atom_size;

  854.     int i;

  855. 

  856.     ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */

  857.     ctts_entries[0].count = 1;

  858.     ctts_entries[0].duration = track->cluster[0].cts;

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

  860.         if (track->cluster[i].cts == ctts_entries[entries].duration) {

  861.             ctts_entries[entries].count++; /* compress */

  862.         } else {

  863.             entries++;

  864.             ctts_entries[entries].duration = track->cluster[i].cts;

  865.             ctts_entries[entries].count = 1;

  866.         }

  867.     }

  868.     entries++; /* last one */

  869.     atom_size = 16 + (entries * 8);

  870.     put_be32(pb, atom_size); /* size */

  871.     put_tag(pb, "ctts");

  872.     put_be32(pb, 0); /* version & flags */

  873.     put_be32(pb, entries); /* entry count */

  874.     for (i=0; i<entries; i++) {

  875.         put_be32(pb, ctts_entries[i].count);

  876.         put_be32(pb, ctts_entries[i].duration);

  877.     }

  878.     av_free(ctts_entries);

  879.     return atom_size;

  880. }

  881. 

  882. /* Time to sample atom */

  883. static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack *track)

  884. {

  885.     MOVStts *stts_entries;

  886.     uint32_t entries = -1;

  887.     uint32_t atom_size;

  888.     int i;

  889. 

  890.     if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {

  891.         stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */

  892.         stts_entries[0].count = track->sampleCount;

  893.         stts_entries[0].duration = 1;

  894.         entries = 1;

  895.     } else {

  896.         stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */

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

  898.             int64_t duration = i + 1 == track->entry ?

  899.                 track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */

  900.                 track->cluster[i+1].dts - track->cluster[i].dts;

  901.             if (i && duration == stts_entries[entries].duration) {

  902.                 stts_entries[entries].count++; /* compress */

  903.             } else {

  904.                 entries++;

  905.                 stts_entries[entries].duration = duration;

  906.                 stts_entries[entries].count = 1;

  907.             }

  908.         }

  909.         entries++; /* last one */

  910.     }

  911.     atom_size = 16 + (entries * 8);

  912.     put_be32(pb, atom_size); /* size */

  913.     put_tag(pb, "stts");

  914.     put_be32(pb, 0); /* version & flags */

  915.     put_be32(pb, entries); /* entry count */

  916.     for (i=0; i<entries; i++) {

  917.         put_be32(pb, stts_entries[i].count);

  918.         put_be32(pb, stts_entries[i].duration);

  919.     }

  920.     av_free(stts_entries);

  921.     return atom_size;

  922. }

  923. 

  924. static int mov_write_dref_tag(ByteIOContext *pb)

  925. {

  926.     put_be32(pb, 28); /* size */

  927.     put_tag(pb, "dref");

  928.     put_be32(pb, 0); /* version & flags */

  929.     put_be32(pb, 1); /* entry count */

  930. 

  931.     put_be32(pb, 0xc); /* size */

  932.     put_tag(pb, "url ");

  933.     put_be32(pb, 1); /* version & flags */

  934. 

  935.     return 28;

  936. }

  937. 

  938. static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack *track)

  939. {

  940.     int64_t pos = url_ftell(pb);

  941.     put_be32(pb, 0); /* size */

  942.     put_tag(pb, "stbl");

  943.     mov_write_stsd_tag(pb, track);

  944.     mov_write_stts_tag(pb, track);

  945.     if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||

  946.          track->enc->codec_tag == MKTAG('r','t','p',' ')) &&

  947.         track->hasKeyframes && track->hasKeyframes < track->entry)

  948.         mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);

  949.     if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)

  950.         mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);

  951.     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&

  952.         track->flags & MOV_TRACK_CTTS)

  953.         mov_write_ctts_tag(pb, track);

  954.     mov_write_stsc_tag(pb, track);

  955.     mov_write_stsz_tag(pb, track);

  956.     mov_write_stco_tag(pb, track);

  957.     return updateSize(pb, pos);

  958. }

  959. 

  960. static int mov_write_dinf_tag(ByteIOContext *pb)

  961. {

  962.     int64_t pos = url_ftell(pb);

  963.     put_be32(pb, 0); /* size */

  964.     put_tag(pb, "dinf");

  965.     mov_write_dref_tag(pb);

  966.     return updateSize(pb, pos);

  967. }

  968. 

  969. static int mov_write_nmhd_tag(ByteIOContext *pb)

  970. {

  971.     put_be32(pb, 12);

  972.     put_tag(pb, "nmhd");

  973.     put_be32(pb, 0);

  974.     return 12;

  975. }

  976. 

  977. static int mov_write_gmhd_tag(ByteIOContext *pb)

  978. {

  979.     put_be32(pb, 0x20);   /* size */

  980.     put_tag(pb, "gmhd");

  981.     put_be32(pb, 0x18);   /* gmin size */

  982.     put_tag(pb, "gmin");  /* generic media info */

  983.     put_be32(pb, 0);      /* version & flags */

  984.     put_be16(pb, 0x40);   /* graphics mode = */

  985.     put_be16(pb, 0x8000); /* opColor (r?) */

  986.     put_be16(pb, 0x8000); /* opColor (g?) */

  987.     put_be16(pb, 0x8000); /* opColor (b?) */

  988.     put_be16(pb, 0);      /* balance */

  989.     put_be16(pb, 0);      /* reserved */

  990.     return 0x20;

  991. }

  992. 

  993. static int mov_write_smhd_tag(ByteIOContext *pb)

  994. {

  995.     put_be32(pb, 16); /* size */

  996.     put_tag(pb, "smhd");

  997.     put_be32(pb, 0); /* version & flags */

  998.     put_be16(pb, 0); /* reserved (balance, normally = 0) */

  999.     put_be16(pb, 0); /* reserved */

  1000.     return 16;

  1001. }

  1002. 

  1003. static int mov_write_vmhd_tag(ByteIOContext *pb)

  1004. {

  1005.     put_be32(pb, 0x14); /* size (always 0x14) */

  1006.     put_tag(pb, "vmhd");

  1007.     put_be32(pb, 0x01); /* version & flags */

  1008.     put_be64(pb, 0); /* reserved (graphics mode = copy) */

  1009.     return 0x14;

  1010. }

  1011. 

  1012. static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack *track)

  1013. {

  1014.     const char *hdlr, *descr = NULL, *hdlr_type = NULL;

  1015.     int64_t pos = url_ftell(pb);

  1016. 

  1017.     if (!track) { /* no media --> data handler */

  1018.         hdlr = "dhlr";

  1019.         hdlr_type = "url ";

  1020.         descr = "DataHandler";

  1021.     } else {

  1022.         hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";

  1023.         if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {

  1024.             hdlr_type = "vide";

  1025.             descr = "VideoHandler";

  1026.         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {

  1027.             hdlr_type = "soun";

  1028.             descr = "SoundHandler";

  1029.         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {

  1030.             if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";

  1031.             else                                      hdlr_type = "text";

  1032.             descr = "SubtitleHandler";

  1033.         } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {

  1034.             hdlr_type = "hint";

  1035.             descr = "HintHandler";

  1036.         }

  1037.     }

  1038. 

  1039.     put_be32(pb, 0); /* size */

  1040.     put_tag(pb, "hdlr");

  1041.     put_be32(pb, 0); /* Version & flags */

  1042.     put_buffer(pb, hdlr, 4); /* handler */

  1043.     put_tag(pb, hdlr_type); /* handler type */

  1044.     put_be32(pb ,0); /* reserved */

  1045.     put_be32(pb ,0); /* reserved */

  1046.     put_be32(pb ,0); /* reserved */

  1047.     if (!track || track->mode == MODE_MOV)

  1048.         put_byte(pb, strlen(descr)); /* pascal string */

  1049.     put_buffer(pb, descr, strlen(descr)); /* handler description */

  1050.     if (track && track->mode != MODE_MOV)

  1051.         put_byte(pb, 0); /* c string */

  1052.     return updateSize(pb, pos);

  1053. }

  1054. 

  1055. static int mov_write_hmhd_tag(ByteIOContext *pb)

  1056. {

  1057.     /* This atom must be present, but leaving the values at zero

  1058.      * seems harmless. */

  1059.     put_be32(pb, 28); /* size */

  1060.     put_tag(pb, "hmhd");

  1061.     put_be32(pb, 0); /* version, flags */

  1062.     put_be16(pb, 0); /* maxPDUsize */

  1063.     put_be16(pb, 0); /* avgPDUsize */

  1064.     put_be32(pb, 0); /* maxbitrate */

  1065.     put_be32(pb, 0); /* avgbitrate */

  1066.     put_be32(pb, 0); /* reserved */

  1067.     return 28;

  1068. }

  1069. 

  1070. static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack *track)

  1071. {

  1072.     int64_t pos = url_ftell(pb);

  1073.     put_be32(pb, 0); /* size */

  1074.     put_tag(pb, "minf");

  1075.     if(track->enc->codec_type == AVMEDIA_TYPE_VIDEO)

  1076.         mov_write_vmhd_tag(pb);

  1077.     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)

  1078.         mov_write_smhd_tag(pb);

  1079.     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {

  1080.         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);

  1081.         else                                      mov_write_nmhd_tag(pb);

  1082.     } else if (track->tag == MKTAG('r','t','p',' ')) {

  1083.         mov_write_hmhd_tag(pb);

  1084.     }

  1085.     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */

  1086.         mov_write_hdlr_tag(pb, NULL);

  1087.     mov_write_dinf_tag(pb);

  1088.     mov_write_stbl_tag(pb, track);

  1089.     return updateSize(pb, pos);

  1090. }

  1091. 

  1092. static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack *track)

  1093. {

  1094.     int version = track->trackDuration < INT32_MAX ? 0 : 1;

  1095. 

  1096.     (version == 1) ? put_be32(pb, 44) : put_be32(pb, 32); /* size */

  1097.     put_tag(pb, "mdhd");

  1098.     put_byte(pb, version);

  1099.     put_be24(pb, 0); /* flags */

  1100.     if (version == 1) {

  1101.         put_be64(pb, track->time);

  1102.         put_be64(pb, track->time);

  1103.     } else {

  1104.         put_be32(pb, track->time); /* creation time */

  1105.         put_be32(pb, track->time); /* modification time */

  1106.     }

  1107.     put_be32(pb, track->timescale); /* time scale (sample rate for audio) */

  1108.     (version == 1) ? put_be64(pb, track->trackDuration) : put_be32(pb, track->trackDuration); /* duration */

  1109.     put_be16(pb, track->language); /* language */

  1110.     put_be16(pb, 0); /* reserved (quality) */

  1111. 

  1112.     if(version!=0 && track->mode == MODE_MOV){

  1113.         av_log(NULL, AV_LOG_ERROR,

  1114.             "FATAL error, file duration too long for timebase, this file will not be\n"

  1115.             "playable with quicktime. Choose a different timebase or a different\n"

  1116.             "container format\n");

  1117.     }

  1118. 

  1119.     return 32;

  1120. }

  1121. 

  1122. static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack *track)

  1123. {

  1124.     int64_t pos = url_ftell(pb);

  1125.     put_be32(pb, 0); /* size */

  1126.     put_tag(pb, "mdia");

  1127.     mov_write_mdhd_tag(pb, track);

  1128.     mov_write_hdlr_tag(pb, track);

  1129.     mov_write_minf_tag(pb, track);

  1130.     return updateSize(pb, pos);

  1131. }

  1132. 

  1133. static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1134. {

  1135.     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,

  1136.                                       track->timescale, AV_ROUND_UP);

  1137.     int version = duration < INT32_MAX ? 0 : 1;

  1138. 

  1139.     (version == 1) ? put_be32(pb, 104) : put_be32(pb, 92); /* size */

  1140.     put_tag(pb, "tkhd");

  1141.     put_byte(pb, version);

  1142.     put_be24(pb, 0xf); /* flags (track enabled) */

  1143.     if (version == 1) {

  1144.         put_be64(pb, track->time);

  1145.         put_be64(pb, track->time);

  1146.     } else {

  1147.         put_be32(pb, track->time); /* creation time */

  1148.         put_be32(pb, track->time); /* modification time */

  1149.     }

  1150.     put_be32(pb, track->trackID); /* track-id */

  1151.     put_be32(pb, 0); /* reserved */

  1152.     (version == 1) ? put_be64(pb, duration) : put_be32(pb, duration);

  1153. 

  1154.     put_be32(pb, 0); /* reserved */

  1155.     put_be32(pb, 0); /* reserved */

  1156.     put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */

  1157.     /* Volume, only for audio */

  1158.     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)

  1159.         put_be16(pb, 0x0100);

  1160.     else

  1161.         put_be16(pb, 0);

  1162.     put_be16(pb, 0); /* reserved */

  1163. 

  1164.     /* Matrix structure */

  1165.     put_be32(pb, 0x00010000); /* reserved */

  1166.     put_be32(pb, 0x0); /* reserved */

  1167.     put_be32(pb, 0x0); /* reserved */

  1168.     put_be32(pb, 0x0); /* reserved */

  1169.     put_be32(pb, 0x00010000); /* reserved */

  1170.     put_be32(pb, 0x0); /* reserved */

  1171.     put_be32(pb, 0x0); /* reserved */

  1172.     put_be32(pb, 0x0); /* reserved */

  1173.     put_be32(pb, 0x40000000); /* reserved */

  1174. 

  1175.     /* Track width and height, for visual only */

  1176.     if(st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||

  1177.               track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {

  1178.         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);

  1179.         if(!sample_aspect_ratio || track->height != track->enc->height)

  1180.             sample_aspect_ratio = 1;

  1181.         put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);

  1182.         put_be32(pb, track->height*0x10000);

  1183.     }

  1184.     else {

  1185.         put_be32(pb, 0);

  1186.         put_be32(pb, 0);

  1187.     }

  1188.     return 0x5c;

  1189. }

  1190. 

  1191. // This box seems important for the psp playback ... without it the movie seems to hang

  1192. static int mov_write_edts_tag(ByteIOContext *pb, MOVTrack *track)

  1193. {

  1194.     put_be32(pb, 0x24); /* size  */

  1195.     put_tag(pb, "edts");

  1196.     put_be32(pb, 0x1c); /* size  */

  1197.     put_tag(pb, "elst");

  1198.     put_be32(pb, 0x0);

  1199.     put_be32(pb, 0x1);

  1200. 

  1201.     /* duration   ... doesn't seem to effect psp */

  1202.     put_be32(pb, av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,

  1203.                                 track->timescale, AV_ROUND_UP));

  1204. 

  1205.     put_be32(pb, track->cluster[0].cts); /* first pts is cts since dts is 0 */

  1206.     put_be32(pb, 0x00010000);

  1207.     return 0x24;

  1208. }

  1209. 

  1210. static int mov_write_tref_tag(ByteIOContext *pb, MOVTrack *track)

  1211. {

  1212.     put_be32(pb, 20);   // size

  1213.     put_tag(pb, "tref");

  1214.     put_be32(pb, 12);   // size (subatom)

  1215.     put_le32(pb, track->tref_tag);

  1216.     put_be32(pb, track->tref_id);

  1217.     return 20;

  1218. }

  1219. 

  1220. // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)

  1221. static int mov_write_uuid_tag_psp(ByteIOContext *pb, MOVTrack *mov)

  1222. {

  1223.     put_be32(pb, 0x34); /* size ... reports as 28 in mp4box! */

  1224.     put_tag(pb, "uuid");

  1225.     put_tag(pb, "USMT");

  1226.     put_be32(pb, 0x21d24fce);

  1227.     put_be32(pb, 0xbb88695c);

  1228.     put_be32(pb, 0xfac9c740);

  1229.     put_be32(pb, 0x1c);     // another size here!

  1230.     put_tag(pb, "MTDT");

  1231.     put_be32(pb, 0x00010012);

  1232.     put_be32(pb, 0x0a);

  1233.     put_be32(pb, 0x55c40000);

  1234.     put_be32(pb, 0x1);

  1235.     put_be32(pb, 0x0);

  1236.     return 0x34;

  1237. }

  1238. 

  1239. static int mov_write_udta_sdp(ByteIOContext *pb, AVCodecContext *ctx, int index)

  1240. {

  1241.     char buf[1000] = "";

  1242.     int len;

  1243. 

  1244.     ff_sdp_write_media(buf, sizeof(buf), ctx, NULL, 0, 0);

  1245.     av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);

  1246.     len = strlen(buf);

  1247. 

  1248.     put_be32(pb, len + 24);

  1249.     put_tag (pb, "udta");

  1250.     put_be32(pb, len + 16);

  1251.     put_tag (pb, "hnti");

  1252.     put_be32(pb, len + 8);

  1253.     put_tag (pb, "sdp ");

  1254.     put_buffer(pb, buf, len);

  1255.     return len + 24;

  1256. }

  1257. 

  1258. static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1259. {

  1260.     int64_t pos = url_ftell(pb);

  1261.     put_be32(pb, 0); /* size */

  1262.     put_tag(pb, "trak");

  1263.     mov_write_tkhd_tag(pb, track, st);

  1264.     if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS)

  1265.         mov_write_edts_tag(pb, track);  // PSP Movies require edts box

  1266.     if (track->tref_tag)

  1267.         mov_write_tref_tag(pb, track);

  1268.     mov_write_mdia_tag(pb, track);

  1269.     if (track->mode == MODE_PSP)

  1270.         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box

  1271.     if (track->tag == MKTAG('r','t','p',' '))

  1272.         mov_write_udta_sdp(pb, track->rtp_ctx->streams[0]->codec, track->trackID);

  1273.     return updateSize(pb, pos);

  1274. }

  1275. 

  1276. #if 0

  1277. /* TODO: Not sorted out, but not necessary either */

  1278. static int mov_write_iods_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1279. {

  1280.     put_be32(pb, 0x15); /* size */

  1281.     put_tag(pb, "iods");

  1282.     put_be32(pb, 0);    /* version & flags */

  1283.     put_be16(pb, 0x1007);

  1284.     put_byte(pb, 0);

  1285.     put_be16(pb, 0x4fff);

  1286.     put_be16(pb, 0xfffe);

  1287.     put_be16(pb, 0x01ff);

  1288.     return 0x15;

  1289. }

  1290. #endif

  1291. 

  1292. static int mov_write_mvhd_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1293. {

  1294.     int maxTrackID = 1, i;

  1295.     int64_t maxTrackLenTemp, maxTrackLen = 0;

  1296.     int version;

  1297. 

  1298.     for (i=0; i<mov->nb_streams; i++) {

  1299.         if(mov->tracks[i].entry > 0) {

  1300.             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,

  1301.                                              MOV_TIMESCALE,

  1302.                                              mov->tracks[i].timescale,

  1303.                                              AV_ROUND_UP);

  1304.             if(maxTrackLen < maxTrackLenTemp)

  1305.                 maxTrackLen = maxTrackLenTemp;

  1306.             if(maxTrackID < mov->tracks[i].trackID)

  1307.                 maxTrackID = mov->tracks[i].trackID;

  1308.         }

  1309.     }

  1310. 

  1311.     version = maxTrackLen < UINT32_MAX ? 0 : 1;

  1312.     (version == 1) ? put_be32(pb, 120) : put_be32(pb, 108); /* size */

  1313.     put_tag(pb, "mvhd");

  1314.     put_byte(pb, version);

  1315.     put_be24(pb, 0); /* flags */

  1316.     if (version == 1) {

  1317.         put_be64(pb, mov->time);

  1318.         put_be64(pb, mov->time);

  1319.     } else {

  1320.         put_be32(pb, mov->time); /* creation time */

  1321.         put_be32(pb, mov->time); /* modification time */

  1322.     }

  1323.     put_be32(pb, MOV_TIMESCALE);

  1324.     (version == 1) ? put_be64(pb, maxTrackLen) : put_be32(pb, maxTrackLen); /* duration of longest track */

  1325. 

  1326.     put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */

  1327.     put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */

  1328.     put_be16(pb, 0); /* reserved */

  1329.     put_be32(pb, 0); /* reserved */

  1330.     put_be32(pb, 0); /* reserved */

  1331. 

  1332.     /* Matrix structure */

  1333.     put_be32(pb, 0x00010000); /* reserved */

  1334.     put_be32(pb, 0x0); /* reserved */

  1335.     put_be32(pb, 0x0); /* reserved */

  1336.     put_be32(pb, 0x0); /* reserved */

  1337.     put_be32(pb, 0x00010000); /* reserved */

  1338.     put_be32(pb, 0x0); /* reserved */

  1339.     put_be32(pb, 0x0); /* reserved */

  1340.     put_be32(pb, 0x0); /* reserved */

  1341.     put_be32(pb, 0x40000000); /* reserved */

  1342. 

  1343.     put_be32(pb, 0); /* reserved (preview time) */

  1344.     put_be32(pb, 0); /* reserved (preview duration) */

  1345.     put_be32(pb, 0); /* reserved (poster time) */

  1346.     put_be32(pb, 0); /* reserved (selection time) */

  1347.     put_be32(pb, 0); /* reserved (selection duration) */

  1348.     put_be32(pb, 0); /* reserved (current time) */

  1349.     put_be32(pb, maxTrackID+1); /* Next track id */

  1350.     return 0x6c;

  1351. }

  1352. 

  1353. static int mov_write_itunes_hdlr_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1354.                                      AVFormatContext *s)

  1355. {

  1356.     put_be32(pb, 33); /* size */

  1357.     put_tag(pb, "hdlr");

  1358.     put_be32(pb, 0);

  1359.     put_be32(pb, 0);

  1360.     put_tag(pb, "mdir");

  1361.     put_tag(pb, "appl");

  1362.     put_be32(pb, 0);

  1363.     put_be32(pb, 0);

  1364.     put_byte(pb, 0);

  1365.     return 33;

  1366. }

  1367. 

  1368. /* helper function to write a data tag with the specified string as data */

  1369. static int mov_write_string_data_tag(ByteIOContext *pb, const char *data, int lang, int long_style)

  1370. {

  1371.     if(long_style){

  1372.         int size = 16 + strlen(data);

  1373.         put_be32(pb, size); /* size */

  1374.         put_tag(pb, "data");

  1375.         put_be32(pb, 1);

  1376.         put_be32(pb, 0);

  1377.         put_buffer(pb, data, strlen(data));

  1378.         return size;

  1379.     }else{

  1380.         if (!lang)

  1381.             lang = ff_mov_iso639_to_lang("und", 1);

  1382.         put_be16(pb, strlen(data)); /* string length */

  1383.         put_be16(pb, lang);

  1384.         put_buffer(pb, data, strlen(data));

  1385.         return strlen(data) + 4;

  1386.     }

  1387. }

  1388. 

  1389. static int mov_write_string_tag(ByteIOContext *pb, const char *name, const char *value, int lang, int long_style){

  1390.     int size = 0;

  1391.     if (value && value[0]) {

  1392.         int64_t pos = url_ftell(pb);

  1393.         put_be32(pb, 0); /* size */

  1394.         put_tag(pb, name);

  1395.         mov_write_string_data_tag(pb, value, lang, long_style);

  1396.         size= updateSize(pb, pos);

  1397.     }

  1398.     return size;

  1399. }

  1400. 

  1401. static int mov_write_string_metadata(AVFormatContext *s, ByteIOContext *pb,

  1402.                                      const char *name, const char *tag,

  1403.                                      int long_style)

  1404. {

  1405.     int l, lang = 0, len, len2;

  1406.     AVMetadataTag *t, *t2 = NULL;

  1407.     char tag2[16];

  1408. 

  1409.     if (!(t = av_metadata_get(s->metadata, tag, NULL, 0)))

  1410.         return 0;

  1411. 

  1412.     len = strlen(t->key);

  1413.     snprintf(tag2, sizeof(tag2), "%s-", tag);

  1414.     while ((t2 = av_metadata_get(s->metadata, tag2, t2, AV_METADATA_IGNORE_SUFFIX))) {

  1415.         len2 = strlen(t2->key);

  1416.         if (len2 == len+4 && !strcmp(t->value, t2->value)

  1417.             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 1)) >= 0) {

  1418.             lang = l;

  1419.             break;

  1420.         }

  1421.     }

  1422.     return mov_write_string_tag(pb, name, t->value, lang, long_style);

  1423. }

  1424. 

  1425. /* iTunes track number */

  1426. static int mov_write_trkn_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1427.                               AVFormatContext *s)

  1428. {

  1429.     AVMetadataTag *t = av_metadata_get(s->metadata, "track", NULL, 0);

  1430.     int size = 0, track = t ? atoi(t->value) : 0;

  1431.     if (track) {

  1432.         put_be32(pb, 32); /* size */

  1433.         put_tag(pb, "trkn");

  1434.             put_be32(pb, 24); /* size */

  1435.             put_tag(pb, "data");

  1436.             put_be32(pb, 0);        // 8 bytes empty

  1437.             put_be32(pb, 0);

  1438.             put_be16(pb, 0);        // empty

  1439.             put_be16(pb, track);    // track number

  1440.             put_be16(pb, 0);        // total track number

  1441.             put_be16(pb, 0);        // empty

  1442.         size = 32;

  1443.     }

  1444.     return size;

  1445. }

  1446. 

  1447. /* iTunes meta data list */

  1448. static int mov_write_ilst_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1449.                               AVFormatContext *s)

  1450. {

  1451.     int64_t pos = url_ftell(pb);

  1452.     put_be32(pb, 0); /* size */

  1453.     put_tag(pb, "ilst");

  1454.     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);

  1455.     mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);

  1456.     mov_write_string_metadata(s, pb, "aART", "album_artist", 1);

  1457.     mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);

  1458.     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);

  1459.     mov_write_string_metadata(s, pb, "\251day", "date"     , 1);

  1460.     mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);

  1461.     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);

  1462.     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);

  1463.     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);

  1464.     mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);

  1465.     mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);

  1466.     mov_write_string_metadata(s, pb, "desc",    "description",1);

  1467.     mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);

  1468.     mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);

  1469.     mov_write_string_metadata(s, pb, "tven",    "episode_id",1);

  1470.     mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);

  1471.     mov_write_trkn_tag(pb, mov, s);

  1472.     return updateSize(pb, pos);

  1473. }

  1474. 

  1475. /* iTunes meta data tag */

  1476. static int mov_write_meta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1477.                               AVFormatContext *s)

  1478. {

  1479.     int size = 0;

  1480.     int64_t pos = url_ftell(pb);

  1481.     put_be32(pb, 0); /* size */

  1482.     put_tag(pb, "meta");

  1483.     put_be32(pb, 0);

  1484.     mov_write_itunes_hdlr_tag(pb, mov, s);

  1485.     mov_write_ilst_tag(pb, mov, s);

  1486.     size = updateSize(pb, pos);

  1487.     return size;

  1488. }

  1489. 

  1490. static int utf8len(const uint8_t *b)

  1491. {

  1492.     int len=0;

  1493.     int val;

  1494.     while(*b){

  1495.         GET_UTF8(val, *b++, return -1;)

  1496.         len++;

  1497.     }

  1498.     return len;

  1499. }

  1500. 

  1501. static int ascii_to_wc(ByteIOContext *pb, const uint8_t *b)

  1502. {

  1503.     int val;

  1504.     while(*b){

  1505.         GET_UTF8(val, *b++, return -1;)

  1506.         put_be16(pb, val);

  1507.     }

  1508.     put_be16(pb, 0x00);

  1509.     return 0;

  1510. }

  1511. 

  1512. static uint16_t language_code(const char *str)

  1513. {

  1514.     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);

  1515. }

  1516. 

  1517. static int mov_write_3gp_udta_tag(ByteIOContext *pb, AVFormatContext *s,

  1518.                                   const char *tag, const char *str)

  1519. {

  1520.     int64_t pos = url_ftell(pb);

  1521.     AVMetadataTag *t = av_metadata_get(s->metadata, str, NULL, 0);

  1522.     if (!t || !utf8len(t->value))

  1523.         return 0;

  1524.     put_be32(pb, 0);   /* size */

  1525.     put_tag (pb, tag); /* type */

  1526.     put_be32(pb, 0);   /* version + flags */

  1527.     if (!strcmp(tag, "yrrc"))

  1528.         put_be16(pb, atoi(t->value));

  1529.     else {

  1530.         put_be16(pb, language_code("eng")); /* language */

  1531.         put_buffer(pb, t->value, strlen(t->value)+1); /* UTF8 string value */

  1532.         if (!strcmp(tag, "albm") &&

  1533.             (t = av_metadata_get(s->metadata, "date", NULL, 0)))

  1534.             put_byte(pb, atoi(t->value));

  1535.     }

  1536.     return updateSize(pb, pos);

  1537. }

  1538. 

  1539. static int mov_write_chpl_tag(ByteIOContext *pb, AVFormatContext *s)

  1540. {

  1541.     int64_t pos = url_ftell(pb);

  1542.     int i, nb_chapters = FFMIN(s->nb_chapters, 255);

  1543. 

  1544.     put_be32(pb, 0);            // size

  1545.     put_tag (pb, "chpl");

  1546.     put_be32(pb, 0x01000000);   // version + flags

  1547.     put_be32(pb, 0);            // unknown

  1548.     put_byte(pb, nb_chapters);

  1549. 

  1550.     for (i = 0; i < nb_chapters; i++) {

  1551.         AVChapter *c = s->chapters[i];

  1552.         AVMetadataTag *t;

  1553.         put_be64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));

  1554. 

  1555.         if ((t = av_metadata_get(c->metadata, "title", NULL, 0))) {

  1556.             int len = FFMIN(strlen(t->value), 255);

  1557.             put_byte(pb, len);

  1558.             put_buffer(pb, t->value, len);

  1559.         } else

  1560.             put_byte(pb, 0);

  1561.     }

  1562.     return updateSize(pb, pos);

  1563. }

  1564. 

  1565. static int mov_write_udta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1566.                               AVFormatContext *s)

  1567. {

  1568.     ByteIOContext *pb_buf;

  1569.     int i, ret, size;

  1570.     uint8_t *buf;

  1571. 

  1572.     for (i = 0; i < s->nb_streams; i++)

  1573.         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {

  1574.             return 0;

  1575.         }

  1576. 

  1577.     ret = url_open_dyn_buf(&pb_buf);

  1578.     if(ret < 0)

  1579.         return ret;

  1580. 

  1581.         if (mov->mode & MODE_3GP) {

  1582.             mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");

  1583.             mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");

  1584.             mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");

  1585.             mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");

  1586.             mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");

  1587.             mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");

  1588.             mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");

  1589.             mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");

  1590.         } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4

  1591.             mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);

  1592.             mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);

  1593.             mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);

  1594.             mov_write_string_metadata(s, pb_buf, "\251day", "date"       , 0);

  1595.             mov_write_string_tag(pb_buf, "\251enc", LIBAVFORMAT_IDENT, 0, 0);

  1596.             mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);

  1597.             mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);

  1598.             mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);

  1599.         } else {

  1600.             /* iTunes meta data */

  1601.             mov_write_meta_tag(pb_buf, mov, s);

  1602.         }

  1603. 

  1604.         if (s->nb_chapters)

  1605.             mov_write_chpl_tag(pb_buf, s);

  1606. 

  1607.     if ((size = url_close_dyn_buf(pb_buf, &buf)) > 0) {

  1608.         put_be32(pb, size+8);

  1609.         put_tag(pb, "udta");

  1610.         put_buffer(pb, buf, size);

  1611.         av_free(buf);

  1612.     }

  1613. 

  1614.     return 0;

  1615. }

  1616. 

  1617. static void mov_write_psp_udta_tag(ByteIOContext *pb,

  1618.                                   const char *str, const char *lang, int type)

  1619. {

  1620.     int len = utf8len(str)+1;

  1621.     if(len<=0)

  1622.         return;

  1623.     put_be16(pb, len*2+10);            /* size */

  1624.     put_be32(pb, type);                /* type */

  1625.     put_be16(pb, language_code(lang)); /* language */

  1626.     put_be16(pb, 0x01);                /* ? */

  1627.     ascii_to_wc(pb, str);

  1628. }

  1629. 

  1630. static int mov_write_uuidusmt_tag(ByteIOContext *pb, AVFormatContext *s)

  1631. {

  1632.     AVMetadataTag *title = av_metadata_get(s->metadata, "title", NULL, 0);

  1633.     int64_t pos, pos2;

  1634. 

  1635.     if (title) {

  1636.         pos = url_ftell(pb);

  1637.         put_be32(pb, 0); /* size placeholder*/

  1638.         put_tag(pb, "uuid");

  1639.         put_tag(pb, "USMT");

  1640.         put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1641.         put_be32(pb, 0xbb88695c);

  1642.         put_be32(pb, 0xfac9c740);

  1643. 

  1644.         pos2 = url_ftell(pb);

  1645.         put_be32(pb, 0); /* size placeholder*/

  1646.         put_tag(pb, "MTDT");

  1647.         put_be16(pb, 4);

  1648. 

  1649.         // ?

  1650.         put_be16(pb, 0x0C);                 /* size */

  1651.         put_be32(pb, 0x0B);                 /* type */

  1652.         put_be16(pb, language_code("und")); /* language */

  1653.         put_be16(pb, 0x0);                  /* ? */

  1654.         put_be16(pb, 0x021C);               /* data */

  1655. 

  1656.         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);

  1657.         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);

  1658. //        snprintf(dt,32,"%04d/%02d/%02d %02d:%02d:%02d",t_st->tm_year+1900,t_st->tm_mon+1,t_st->tm_mday,t_st->tm_hour,t_st->tm_min,t_st->tm_sec);

  1659.         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);

  1660. 

  1661.         updateSize(pb, pos2);

  1662.         return updateSize(pb, pos);

  1663.     }

  1664. 

  1665.     return 0;

  1666. }

  1667. 

  1668. static int mov_write_moov_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1669.                               AVFormatContext *s)

  1670. {

  1671.     int i;

  1672.     int64_t pos = url_ftell(pb);

  1673.     put_be32(pb, 0); /* size placeholder*/

  1674.     put_tag(pb, "moov");

  1675. 

  1676.     for (i=0; i<mov->nb_streams; i++) {

  1677.         if(mov->tracks[i].entry <= 0) continue;

  1678. 

  1679.         mov->tracks[i].time = mov->time;

  1680.         mov->tracks[i].trackID = i+1;

  1681.     }

  1682. 

  1683.     if (mov->chapter_track)

  1684.         for (i=0; i<s->nb_streams; i++) {

  1685.             mov->tracks[i].tref_tag = MKTAG('c','h','a','p');

  1686.             mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].trackID;

  1687.         }

  1688.     for (i = 0; i < mov->nb_streams; i++) {

  1689.         if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {

  1690.             mov->tracks[i].tref_tag = MKTAG('h','i','n','t');

  1691.             mov->tracks[i].tref_id =

  1692.                 mov->tracks[mov->tracks[i].src_track].trackID;

  1693.         }

  1694.     }

  1695. 

  1696.     mov_write_mvhd_tag(pb, mov);

  1697.     //mov_write_iods_tag(pb, mov);

  1698.     for (i=0; i<mov->nb_streams; i++) {

  1699.         if(mov->tracks[i].entry > 0) {

  1700.             mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);

  1701.         }

  1702.     }

  1703. 

  1704.     if (mov->mode == MODE_PSP)

  1705.         mov_write_uuidusmt_tag(pb, s);

  1706.     else

  1707.         mov_write_udta_tag(pb, mov, s);

  1708. 

  1709.     return updateSize(pb, pos);

  1710. }

  1711. 

  1712. static int mov_write_mdat_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1713. {

  1714.     put_be32(pb, 8);    // placeholder for extended size field (64 bit)

  1715.     put_tag(pb, mov->mode == MODE_MOV ? "wide" : "free");

  1716. 

  1717.     mov->mdat_pos = url_ftell(pb);

  1718.     put_be32(pb, 0); /* size placeholder*/

  1719.     put_tag(pb, "mdat");

  1720.     return 0;

  1721. }

  1722. 

  1723. /* TODO: This needs to be more general */

  1724. static int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)

  1725. {

  1726.     MOVMuxContext *mov = s->priv_data;

  1727.     int64_t pos = url_ftell(pb);

  1728.     int has_h264 = 0, has_video = 0;

  1729.     int minor = 0x200;

  1730.     int i;

  1731. 

  1732.     for (i = 0; i < s->nb_streams; i++) {

  1733.         AVStream *st = s->streams[i];

  1734.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  1735.             has_video = 1;

  1736.         if (st->codec->codec_id == CODEC_ID_H264)

  1737.             has_h264 = 1;

  1738.     }

  1739. 

  1740.     put_be32(pb, 0); /* size */

  1741.     put_tag(pb, "ftyp");

  1742. 

  1743.     if (mov->mode == MODE_3GP) {

  1744.         put_tag(pb, has_h264 ? "3gp6"  : "3gp4");

  1745.         minor =     has_h264 ?   0x100 :   0x200;

  1746.     } else if (mov->mode & MODE_3G2) {

  1747.         put_tag(pb, has_h264 ? "3g2b"  : "3g2a");

  1748.         minor =     has_h264 ? 0x20000 : 0x10000;

  1749.     }else if (mov->mode == MODE_PSP)

  1750.         put_tag(pb, "MSNV");

  1751.     else if (mov->mode == MODE_MP4)

  1752.         put_tag(pb, "isom");

  1753.     else if (mov->mode == MODE_IPOD)

  1754.         put_tag(pb, has_video ? "M4V ":"M4A ");

  1755.     else

  1756.         put_tag(pb, "qt  ");

  1757. 

  1758.     put_be32(pb, minor);

  1759. 

  1760.     if(mov->mode == MODE_MOV)

  1761.         put_tag(pb, "qt  ");

  1762.     else{

  1763.         put_tag(pb, "isom");

  1764.         put_tag(pb, "iso2");

  1765.         if(has_h264)

  1766.             put_tag(pb, "avc1");

  1767.     }

  1768. 

  1769.     if (mov->mode == MODE_3GP)

  1770.         put_tag(pb, has_h264 ? "3gp6":"3gp4");

  1771.     else if (mov->mode & MODE_3G2)

  1772.         put_tag(pb, has_h264 ? "3g2b":"3g2a");

  1773.     else if (mov->mode == MODE_PSP)

  1774.         put_tag(pb, "MSNV");

  1775.     else if (mov->mode == MODE_MP4)

  1776.         put_tag(pb, "mp41");

  1777.     return updateSize(pb, pos);

  1778. }

  1779. 

  1780. static void mov_write_uuidprof_tag(ByteIOContext *pb, AVFormatContext *s)

  1781. {

  1782.     AVCodecContext *VideoCodec = s->streams[0]->codec;

  1783.     AVCodecContext *AudioCodec = s->streams[1]->codec;

  1784.     int AudioRate = AudioCodec->sample_rate;

  1785.     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);

  1786.     int audio_kbitrate= AudioCodec->bit_rate / 1000;

  1787.     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);

  1788. 

  1789.     put_be32(pb, 0x94); /* size */

  1790.     put_tag(pb, "uuid");

  1791.     put_tag(pb, "PROF");

  1792. 

  1793.     put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1794.     put_be32(pb, 0xbb88695c);

  1795.     put_be32(pb, 0xfac9c740);

  1796. 

  1797.     put_be32(pb, 0x0);  /* ? */

  1798.     put_be32(pb, 0x3);  /* 3 sections ? */

  1799. 

  1800.     put_be32(pb, 0x14); /* size */

  1801.     put_tag(pb, "FPRF");

  1802.     put_be32(pb, 0x0);  /* ? */

  1803.     put_be32(pb, 0x0);  /* ? */

  1804.     put_be32(pb, 0x0);  /* ? */

  1805. 

  1806.     put_be32(pb, 0x2c);  /* size */

  1807.     put_tag(pb, "APRF");   /* audio */

  1808.     put_be32(pb, 0x0);

  1809.     put_be32(pb, 0x2);   /* TrackID */

  1810.     put_tag(pb, "mp4a");

  1811.     put_be32(pb, 0x20f);

  1812.     put_be32(pb, 0x0);

  1813.     put_be32(pb, audio_kbitrate);

  1814.     put_be32(pb, audio_kbitrate);

  1815.     put_be32(pb, AudioRate);

  1816.     put_be32(pb, AudioCodec->channels);

  1817. 

  1818.     put_be32(pb, 0x34);  /* size */

  1819.     put_tag(pb, "VPRF");   /* video */

  1820.     put_be32(pb, 0x0);

  1821.     put_be32(pb, 0x1);    /* TrackID */

  1822.     if (VideoCodec->codec_id == CODEC_ID_H264) {

  1823.         put_tag(pb, "avc1");

  1824.         put_be16(pb, 0x014D);

  1825.         put_be16(pb, 0x0015);

  1826.     } else {

  1827.         put_tag(pb, "mp4v");

  1828.         put_be16(pb, 0x0000);

  1829.         put_be16(pb, 0x0103);

  1830.     }

  1831.     put_be32(pb, 0x0);

  1832.     put_be32(pb, video_kbitrate);

  1833.     put_be32(pb, video_kbitrate);

  1834.     put_be32(pb, FrameRate);

  1835.     put_be32(pb, FrameRate);

  1836.     put_be16(pb, VideoCodec->width);

  1837.     put_be16(pb, VideoCodec->height);

  1838.     put_be32(pb, 0x010001); /* ? */

  1839. }

  1840. 

  1841. static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)

  1842. {

  1843.     uint32_t c = -1;

  1844.     int i, closed_gop = 0;

  1845. 

  1846.     for (i = 0; i < pkt->size - 4; i++) {

  1847.         c = (c<<8) + pkt->data[i];

  1848.         if (c == 0x1b8) { // gop

  1849.             closed_gop = pkt->data[i+4]>>6 & 0x01;

  1850.         } else if (c == 0x100) { // pic

  1851.             int temp_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1852.             if (!temp_ref || closed_gop) // I picture is not reordered

  1853.                 *flags = MOV_SYNC_SAMPLE;

  1854.             else

  1855.                 *flags = MOV_PARTIAL_SYNC_SAMPLE;

  1856.             break;

  1857.         }

  1858.     }

  1859.     return 0;

  1860. }

  1861. 

  1862. int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)

  1863. {

  1864.     MOVMuxContext *mov = s->priv_data;

  1865.     ByteIOContext *pb = s->pb;

  1866.     MOVTrack *trk = &mov->tracks[pkt->stream_index];

  1867.     AVCodecContext *enc = trk->enc;

  1868.     unsigned int samplesInChunk = 0;

  1869.     int size= pkt->size;

  1870. 

  1871.     if (url_is_streamed(s->pb)) return 0; /* Can't handle that */

  1872.     if (!size) return 0; /* Discard 0 sized packets */

  1873. 

  1874.     if (enc->codec_id == CODEC_ID_AMR_NB) {

  1875.         /* We must find out how many AMR blocks there are in one packet */

  1876.         static uint16_t packed_size[16] =

  1877.             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};

  1878.         int len = 0;

  1879. 

  1880.         while (len < size && samplesInChunk < 100) {

  1881.             len += packed_size[(pkt->data[len] >> 3) & 0x0F];

  1882.             samplesInChunk++;

  1883.         }

  1884.         if(samplesInChunk > 1){

  1885.             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");

  1886.             return -1;

  1887.         }

  1888.     } else if (trk->sampleSize)

  1889.         samplesInChunk = size/trk->sampleSize;

  1890.     else

  1891.         samplesInChunk = 1;

  1892. 

  1893.     /* copy extradata if it exists */

  1894.     if (trk->vosLen == 0 && enc->extradata_size > 0) {

  1895.         trk->vosLen = enc->extradata_size;

  1896.         trk->vosData = av_malloc(trk->vosLen);

  1897.         memcpy(trk->vosData, enc->extradata, trk->vosLen);

  1898.     }

  1899. 

  1900.     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {

  1901.         /* from x264 or from bytestream h264 */

  1902.         /* nal reformating needed */

  1903.         size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);

  1904.     } else {

  1905.         put_buffer(pb, pkt->data, size);

  1906.     }

  1907. 

  1908.     if ((enc->codec_id == CODEC_ID_DNXHD ||

  1909.          enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {

  1910.         /* copy frame to create needed atoms */

  1911.         trk->vosLen = size;

  1912.         trk->vosData = av_malloc(size);

  1913.         if (!trk->vosData)

  1914.             return AVERROR(ENOMEM);

  1915.         memcpy(trk->vosData, pkt->data, size);

  1916.     }

  1917. 

  1918.     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {

  1919.         trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));

  1920.         if (!trk->cluster)

  1921.             return -1;

  1922.     }

  1923. 

  1924.     trk->cluster[trk->entry].pos = url_ftell(pb) - size;

  1925.     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;

  1926.     trk->cluster[trk->entry].size = size;

  1927.     trk->cluster[trk->entry].entries = samplesInChunk;

  1928.     trk->cluster[trk->entry].dts = pkt->dts;

  1929.     trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;

  1930. 

  1931.     if (pkt->pts == AV_NOPTS_VALUE) {

  1932.         av_log(s, AV_LOG_WARNING, "pts has no value\n");

  1933.         pkt->pts = pkt->dts;

  1934.     }

  1935.     if (pkt->dts != pkt->pts)

  1936.         trk->flags |= MOV_TRACK_CTTS;

  1937.     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;

  1938.     trk->cluster[trk->entry].flags = 0;

  1939.     if (pkt->flags & AV_PKT_FLAG_KEY) {

  1940.         if (mov->mode == MODE_MOV && enc->codec_id == CODEC_ID_MPEG2VIDEO) {

  1941.             mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);

  1942.             if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)

  1943.                 trk->flags |= MOV_TRACK_STPS;

  1944.         } else {

  1945.             trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;

  1946.         }

  1947.         if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)

  1948.             trk->hasKeyframes++;

  1949.     }

  1950.     trk->entry++;

  1951.     trk->sampleCount += samplesInChunk;

  1952.     mov->mdat_size += size;

  1953. 

  1954.     put_flush_packet(pb);

  1955. 

  1956.     if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)

  1957.         ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry);

  1958.     return 0;

  1959. }

  1960. 

  1961. // QuickTime chapters involve an additional text track with the chapter names

  1962. // as samples, and a tref pointing from the other tracks to the chapter one.

  1963. static void mov_create_chapter_track(AVFormatContext *s, int tracknum)

  1964. {

  1965.     MOVMuxContext *mov = s->priv_data;

  1966.     MOVTrack *track = &mov->tracks[tracknum];

  1967.     AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };

  1968.     int i, len;

  1969. 

  1970.     track->mode = mov->mode;

  1971.     track->tag = MKTAG('t','e','x','t');

  1972.     track->timescale = MOV_TIMESCALE;

  1973.     track->enc = avcodec_alloc_context();

  1974.     track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;

  1975. 

  1976.     for (i = 0; i < s->nb_chapters; i++) {

  1977.         AVChapter *c = s->chapters[i];

  1978.         AVMetadataTag *t;

  1979. 

  1980.         int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});

  1981.         pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});

  1982.         pkt.duration = end - pkt.dts;

  1983. 

  1984.         if ((t = av_metadata_get(c->metadata, "title", NULL, 0))) {

  1985.             len = strlen(t->value);

  1986.             pkt.size = len+2;

  1987.             pkt.data = av_malloc(pkt.size);

  1988.             AV_WB16(pkt.data, len);

  1989.             memcpy(pkt.data+2, t->value, len);

  1990.             ff_mov_write_packet(s, &pkt);

  1991.             av_freep(&pkt.data);

  1992.         }

  1993.     }

  1994. }

  1995. 

  1996. static int mov_write_header(AVFormatContext *s)

  1997. {

  1998.     ByteIOContext *pb = s->pb;

  1999.     MOVMuxContext *mov = s->priv_data;

  2000.     int i, hint_track = 0;

  2001. 

  2002.     if (url_is_streamed(s->pb)) {

  2003.         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");

  2004.         return -1;

  2005.     }

  2006. 

  2007.     /* Default mode == MP4 */

  2008.     mov->mode = MODE_MP4;

  2009. 

  2010.     if (s->oformat != NULL) {

  2011.         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;

  2012.         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;

  2013.         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;

  2014.         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;

  2015.         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;

  2016. 

  2017.         mov_write_ftyp_tag(pb,s);

  2018.         if (mov->mode == MODE_PSP) {

  2019.             if (s->nb_streams != 2) {

  2020.                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");

  2021.                 return -1;

  2022.             }

  2023.             mov_write_uuidprof_tag(pb,s);

  2024.         }

  2025.     }

  2026. 

  2027.     mov->nb_streams = s->nb_streams;

  2028.     if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)

  2029.         mov->chapter_track = mov->nb_streams++;

  2030. 

  2031.     if (s->flags & AVFMT_FLAG_RTP_HINT) {

  2032.         /* Add hint tracks for each audio and video stream */

  2033.         hint_track = mov->nb_streams;

  2034.         for (i = 0; i < s->nb_streams; i++) {

  2035.             AVStream *st = s->streams[i];

  2036.             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||

  2037.                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  2038.                 mov->nb_streams++;

  2039.             }

  2040.         }

  2041.     }

  2042. 

  2043.     mov->tracks = av_mallocz(mov->nb_streams*sizeof(*mov->tracks));

  2044.     if (!mov->tracks)

  2045.         return AVERROR(ENOMEM);

  2046. 

  2047.     for(i=0; i<s->nb_streams; i++){

  2048.         AVStream *st= s->streams[i];

  2049.         MOVTrack *track= &mov->tracks[i];

  2050.         AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL,0);

  2051. 

  2052.         track->enc = st->codec;

  2053.         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);

  2054.         if (track->language < 0)

  2055.             track->language = 0;

  2056.         track->mode = mov->mode;

  2057.         track->tag = mov_find_codec_tag(s, track);

  2058.         if (!track->tag) {

  2059.             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "

  2060.                    "codec not currently supported in container\n", i);

  2061.             goto error;

  2062.         }

  2063.         /* If hinting of this track is enabled by a later hint track,

  2064.          * this is updated. */

  2065.         track->hint_track = -1;

  2066.         if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){

  2067.             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||

  2068.                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||

  2069.                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {

  2070.                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {

  2071.                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");

  2072.                     goto error;

  2073.                 }

  2074.                 track->height = track->tag>>24 == 'n' ? 486 : 576;

  2075.             }

  2076.             track->timescale = st->codec->time_base.den;

  2077.             if (track->mode == MODE_MOV && track->timescale > 100000)

  2078.                 av_log(s, AV_LOG_WARNING,

  2079.                        "WARNING codec timebase is very high. If duration is too long,\n"

  2080.                        "file may not be playable by quicktime. Specify a shorter timebase\n"

  2081.                        "or choose different container.\n");

  2082.         }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO){

  2083.             track->timescale = st->codec->sample_rate;

  2084.             if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {

  2085.                 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);

  2086.                 goto error;

  2087.             }else if(st->codec->frame_size > 1){ /* assume compressed audio */

  2088.                 track->audio_vbr = 1;

  2089.             }else{

  2090.                 st->codec->frame_size = 1;

  2091.                 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;

  2092.             }

  2093.             if (track->mode != MODE_MOV) {

  2094.                 if (track->timescale > UINT16_MAX) {

  2095.                     av_log(s, AV_LOG_ERROR, "track %d: output format does not support "

  2096.                            "sample rate %dhz\n", i, track->timescale);

  2097.                     goto error;

  2098.                 }

  2099.                 if (track->enc->codec_id == CODEC_ID_MP3 && track->timescale < 16000) {

  2100.                     av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",

  2101.                            i, track->enc->sample_rate);

  2102.                     goto error;

  2103.                 }

  2104.             }

  2105.         }else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){

  2106.             track->timescale = st->codec->time_base.den;

  2107.         }

  2108.         if (!track->height)

  2109.             track->height = st->codec->height;

  2110. 

  2111.         av_set_pts_info(st, 64, 1, track->timescale);

  2112.     }

  2113. 

  2114.     mov_write_mdat_tag(pb, mov);

  2115.     mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based

  2116. 

  2117.     if (mov->chapter_track)

  2118.         mov_create_chapter_track(s, mov->chapter_track);

  2119. 

  2120.     if (s->flags & AVFMT_FLAG_RTP_HINT) {

  2121.         /* Initialize the hint tracks for each audio and video stream */

  2122.         for (i = 0; i < s->nb_streams; i++) {

  2123.             AVStream *st = s->streams[i];

  2124.             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||

  2125.                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  2126.                 ff_mov_init_hinting(s, hint_track, i);

  2127.                 hint_track++;

  2128.             }

  2129.         }

  2130.     }

  2131. 

  2132.     put_flush_packet(pb);

  2133. 

  2134.     return 0;

  2135.  error:

  2136.     av_freep(&mov->tracks);

  2137.     return -1;

  2138. }

  2139. 

  2140. static int mov_write_trailer(AVFormatContext *s)

  2141. {

  2142.     MOVMuxContext *mov = s->priv_data;

  2143.     ByteIOContext *pb = s->pb;

  2144.     int res = 0;

  2145.     int i;

  2146. 

  2147.     int64_t moov_pos = url_ftell(pb);

  2148. 

  2149.     /* Write size of mdat tag */

  2150.     if (mov->mdat_size+8 <= UINT32_MAX) {

  2151.         url_fseek(pb, mov->mdat_pos, SEEK_SET);

  2152.         put_be32(pb, mov->mdat_size+8);

  2153.     } else {

  2154.         /* overwrite 'wide' placeholder atom */

  2155.         url_fseek(pb, mov->mdat_pos - 8, SEEK_SET);

  2156.         put_be32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */

  2157.         put_tag(pb, "mdat");

  2158.         put_be64(pb, mov->mdat_size+16);

  2159.     }

  2160.     url_fseek(pb, moov_pos, SEEK_SET);

  2161. 

  2162.     mov_write_moov_tag(pb, mov, s);

  2163. 

  2164.     if (mov->chapter_track)

  2165.         av_freep(&mov->tracks[mov->chapter_track].enc);

  2166. 

  2167.     for (i=0; i<mov->nb_streams; i++) {

  2168.         if (mov->tracks[i].tag == MKTAG('r','t','p',' '))

  2169.             ff_mov_close_hinting(&mov->tracks[i]);

  2170.         av_freep(&mov->tracks[i].cluster);

  2171. 

  2172.         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);

  2173. 

  2174.     }

  2175. 

  2176.     put_flush_packet(pb);

  2177. 

  2178.     av_freep(&mov->tracks);

  2179. 

  2180.     return res;

  2181. }

  2182. 

  2183. #if CONFIG_MOV_MUXER

  2184. AVOutputFormat mov_muxer = {

  2185.     "mov",

  2186.     NULL_IF_CONFIG_SMALL("MOV format"),

  2187.     NULL,

  2188.     "mov",

  2189.     sizeof(MOVMuxContext),

  2190.     CODEC_ID_AAC,

  2191.     CODEC_ID_MPEG4,

  2192.     mov_write_header,

  2193.     ff_mov_write_packet,

  2194.     mov_write_trailer,

  2195.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  2196.     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},

  2197. };

  2198. #endif

  2199. #if CONFIG_TGP_MUXER

  2200. AVOutputFormat tgp_muxer = {

  2201.     "3gp",

  2202.     NULL_IF_CONFIG_SMALL("3GP format"),

  2203.     NULL,

  2204.     "3gp",

  2205.     sizeof(MOVMuxContext),

  2206.     CODEC_ID_AMR_NB,

  2207.     CODEC_ID_H263,

  2208.     mov_write_header,

  2209.     ff_mov_write_packet,

  2210.     mov_write_trailer,

  2211.     .flags = AVFMT_GLOBALHEADER,

  2212.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  2213. };

  2214. #endif

  2215. #if CONFIG_MP4_MUXER

  2216. AVOutputFormat mp4_muxer = {

  2217.     "mp4",

  2218.     NULL_IF_CONFIG_SMALL("MP4 format"),

  2219.     "application/mp4",

  2220.     "mp4",

  2221.     sizeof(MOVMuxContext),

  2222.     CODEC_ID_AAC,

  2223.     CODEC_ID_MPEG4,

  2224.     mov_write_header,

  2225.     ff_mov_write_packet,

  2226.     mov_write_trailer,

  2227.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  2228.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  2229. };

  2230. #endif

  2231. #if CONFIG_PSP_MUXER

  2232. AVOutputFormat psp_muxer = {

  2233.     "psp",

  2234.     NULL_IF_CONFIG_SMALL("PSP MP4 format"),

  2235.     NULL,

  2236.     "mp4,psp",

  2237.     sizeof(MOVMuxContext),

  2238.     CODEC_ID_AAC,

  2239.     CODEC_ID_MPEG4,

  2240.     mov_write_header,

  2241.     ff_mov_write_packet,

  2242.     mov_write_trailer,

  2243.     .flags = AVFMT_GLOBALHEADER,

  2244.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  2245. };

  2246. #endif

  2247. #if CONFIG_TG2_MUXER

  2248. AVOutputFormat tg2_muxer = {

  2249.     "3g2",

  2250.     NULL_IF_CONFIG_SMALL("3GP2 format"),

  2251.     NULL,

  2252.     "3g2",

  2253.     sizeof(MOVMuxContext),

  2254.     CODEC_ID_AMR_NB,

  2255.     CODEC_ID_H263,

  2256.     mov_write_header,

  2257.     ff_mov_write_packet,

  2258.     mov_write_trailer,

  2259.     .flags = AVFMT_GLOBALHEADER,

  2260.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  2261. };

  2262. #endif

  2263. #if CONFIG_IPOD_MUXER

  2264. AVOutputFormat ipod_muxer = {

  2265.     "ipod",

  2266.     NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),

  2267.     "application/mp4",

  2268.     "m4v,m4a",

  2269.     sizeof(MOVMuxContext),

  2270.     CODEC_ID_AAC,

  2271.     CODEC_ID_H264,

  2272.     mov_write_header,

  2273.     ff_mov_write_packet,

  2274.     mov_write_trailer,

  2275.     .flags = AVFMT_GLOBALHEADER,

  2276.     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},

  2277. };

  2278. #endif