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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 "avformat.h"

  25. #include "riff.h"

  26. #include "avio.h"

  27. #include "isom.h"

  28. #include "avc.h"

  29. #include "libavcodec/get_bits.h"

  30. #include "libavcodec/put_bits.h"

  31. 

  32. #undef NDEBUG

  33. #include <assert.h>

  34. 

  35. #define MOV_INDEX_CLUSTER_SIZE 16384

  36. #define globalTimescale 1000

  37. 

  38. #define MODE_MP4  0x01

  39. #define MODE_MOV  0x02

  40. #define MODE_3GP  0x04

  41. #define MODE_PSP  0x08 // example working PSP command line:

  42. // ffmpeg -i testinput.avi  -f psp -r 14.985 -s 320x240 -b 768 -ar 24000 -ab 32 M4V00001.MP4

  43. #define MODE_3G2  0x10

  44. #define MODE_IPOD 0x20

  45. 

  46. typedef struct MOVIentry {

  47.     unsigned int flags, size;

  48.     uint64_t     pos;

  49.     unsigned int samplesInChunk;

  50.     char         key_frame;

  51.     unsigned int entries;

  52.     int64_t      cts;

  53.     int64_t      dts;

  54. } MOVIentry;

  55. 

  56. typedef struct MOVIndex {

  57.     int         mode;

  58.     int         entry;

  59.     long        timescale;

  60.     long        time;

  61.     int64_t     trackDuration;

  62.     long        sampleCount;

  63.     long        sampleSize;

  64.     int         hasKeyframes;

  65.     int         hasBframes;

  66.     int         language;

  67.     int         trackID;

  68.     int         tag; ///< stsd fourcc

  69.     AVCodecContext *enc;

  70. 

  71.     int         vosLen;

  72.     uint8_t     *vosData;

  73.     MOVIentry   *cluster;

  74.     int         audio_vbr;

  75.     int         height; ///< active picture (w/o VBI) height for D-10/IMX

  76. } MOVTrack;

  77. 

  78. typedef struct MOVMuxContext {

  79.     int     mode;

  80.     int64_t time;

  81.     int     nb_streams;

  82.     int64_t mdat_pos;

  83.     uint64_t mdat_size;

  84.     long    timescale;

  85.     MOVTrack *tracks;

  86. } MOVMuxContext;

  87. 

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

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

  90. {

  91.     int64_t curpos = url_ftell(pb);

  92.     url_fseek(pb, pos, SEEK_SET);

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

  94.     url_fseek(pb, curpos, SEEK_SET);

  95. 

  96.     return curpos - pos;

  97. }

  98. 

  99. /* Chunk offset atom */

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

  101. {

  102.     int i;

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

  104.     int64_t pos = url_ftell(pb);

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

  106.     if (pos > UINT32_MAX) {

  107.         mode64 = 1;

  108.         put_tag(pb, "co64");

  109.     } else

  110.         put_tag(pb, "stco");

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

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

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

  114.         if(mode64 == 1)

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

  116.         else

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

  118.     }

  119.     return updateSize(pb, pos);

  120. }

  121. 

  122. /* Sample size atom */

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

  124. {

  125.     int equalChunks = 1;

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

  127. 

  128.     int64_t pos = url_ftell(pb);

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

  130.     put_tag(pb, "stsz");

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

  132. 

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

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

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

  136.             equalChunks = 0;

  137.         }

  138.         oldtst = tst;

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

  140.     }

  141.     if (equalChunks) {

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

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

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

  145.     }

  146.     else {

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

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

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

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

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

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

  153.             }

  154.         }

  155.     }

  156.     return updateSize(pb, pos);

  157. }

  158. 

  159. /* Sample to chunk atom */

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

  161. {

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

  163.     int64_t entryPos, curpos;

  164. 

  165.     int64_t pos = url_ftell(pb);

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

  167.     put_tag(pb, "stsc");

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

  169.     entryPos = url_ftell(pb);

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

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

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

  173.         {

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

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

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

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

  178.             index++;

  179.         }

  180.     }

  181.     curpos = url_ftell(pb);

  182.     url_fseek(pb, entryPos, SEEK_SET);

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

  184.     url_fseek(pb, curpos, SEEK_SET);

  185. 

  186.     return updateSize(pb, pos);

  187. }

  188. 

  189. /* Sync sample atom */

  190. static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack *track)

  191. {

  192.     int64_t curpos, entryPos;

  193.     int i, index = 0;

  194.     int64_t pos = url_ftell(pb);

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

  196.     put_tag(pb, "stss");

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

  198.     entryPos = url_ftell(pb);

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

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

  201.         if(track->cluster[i].key_frame == 1) {

  202.             put_be32(pb, i+1);

  203.             index++;

  204.         }

  205.     }

  206.     curpos = url_ftell(pb);

  207.     url_fseek(pb, entryPos, SEEK_SET);

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

  209.     url_fseek(pb, curpos, SEEK_SET);

  210.     return updateSize(pb, pos);

  211. }

  212. 

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

  214. {

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

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

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

  218.     put_tag(pb, "FFMP");

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

  220. 

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

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

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

  224.     return 0x11;

  225. }

  226. 

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

  228. {

  229.     GetBitContext gbc;

  230.     PutBitContext pbc;

  231.     uint8_t buf[3];

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

  233. 

  234.     if (track->vosLen < 7)

  235.         return -1;

  236. 

  237.     put_be32(pb, 11);

  238.     put_tag(pb, "dac3");

  239. 

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

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

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

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

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

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

  246.     if (acmod == 2) {

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

  248.     } else {

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

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

  251.         if (acmod & 4)

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

  253.     }

  254.     lfeon = get_bits1(&gbc);

  255. 

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

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

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

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

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

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

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

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

  264. 

  265.     flush_put_bits(&pbc);

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

  267. 

  268.     return 11;

  269. }

  270. 

  271. /**

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

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

  274.  */

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

  276. {

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

  278.     return track->enc->extradata_size;

  279. }

  280. 

  281. static int mov_write_enda_tag(ByteIOContext *pb)

  282. {

  283.     put_be32(pb, 10);

  284.     put_tag(pb, "enda");

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

  286.     return 10;

  287. }

  288. 

  289. static unsigned int descrLength(unsigned int len)

  290. {

  291.     int i;

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

  293.     return len + 1 + i;

  294. }

  295. 

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

  297. {

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

  299.     put_byte(pb, tag);

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

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

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

  303. }

  304. 

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

  306. {

  307.     int64_t pos = url_ftell(pb);

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

  309. 

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

  311.     put_tag(pb, "esds");

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

  313. 

  314.     // ES descriptor

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

  316.              descrLength(1));

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

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

  319. 

  320.     // DecoderConfig descriptor

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

  322. 

  323.     // Object type indication

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

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

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

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

  328.     else

  329.         put_byte(pb, codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));

  330. 

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

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

  333.     if(track->enc->codec_type == CODEC_TYPE_AUDIO)

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

  335.     else

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

  337. 

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

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

  340. 

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

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

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

  344.     else

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

  346. 

  347.     if (track->vosLen) {

  348.         // DecoderSpecific info descriptor

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

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

  351.     }

  352. 

  353.     // SL descriptor

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

  355.     put_byte(pb, 0x02);

  356.     return updateSize(pb, pos);

  357. }

  358. 

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

  360. {

  361.     int64_t pos = url_ftell(pb);

  362. 

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

  364.     put_tag(pb, "wave");

  365. 

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

  367.     put_tag(pb, "frma");

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

  369. 

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

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

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

  373.         put_tag(pb, "mp4a");

  374.         put_be32(pb, 0);

  375.         mov_write_esds_tag(pb, track);

  376.     } else if (track->enc->codec_id == CODEC_ID_PCM_S24LE ||

  377.                track->enc->codec_id == CODEC_ID_PCM_S32LE) {

  378.         mov_write_enda_tag(pb);

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

  380.         mov_write_amr_tag(pb, track);

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

  382.         mov_write_ac3_tag(pb, track);

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

  384.         mov_write_extradata_tag(pb, track);

  385.     }

  386. 

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

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

  389. 

  390.     return updateSize(pb, pos);

  391. }

  392. 

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

  394. {

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

  396.     put_tag(pb, "glbl");

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

  398.     return 8+track->vosLen;

  399. }

  400. 

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

  402. {

  403.     int64_t pos = url_ftell(pb);

  404.     int version = track->mode == MODE_MOV &&

  405.         (track->audio_vbr ||

  406.          track->enc->codec_id == CODEC_ID_PCM_S32LE ||

  407.          track->enc->codec_id == CODEC_ID_PCM_S24LE);

  408. 

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

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

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

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

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

  414. 

  415.     /* SoundDescription */

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

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

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

  419. 

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

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

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

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

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

  425.         else

  426.             put_be16(pb, 16);

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

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

  429.         put_be16(pb, 2);

  430.         put_be16(pb, 16);

  431.         put_be16(pb, 0);

  432.     }

  433. 

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

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

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

  437. 

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

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

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

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

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

  443.     }

  444. 

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

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

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

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

  449.         track->enc->codec_id == CODEC_ID_PCM_S24LE ||

  450.         track->enc->codec_id == CODEC_ID_PCM_S32LE ||

  451.         track->enc->codec_id == CODEC_ID_ALAC))

  452.         mov_write_wave_tag(pb, track);

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

  454.         mov_write_esds_tag(pb, track);

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

  456.         mov_write_amr_tag(pb, track);

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

  458.         mov_write_ac3_tag(pb, track);

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

  460.         mov_write_extradata_tag(pb, track);

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

  462.         mov_write_glbl_tag(pb, track);

  463. 

  464.     return updateSize(pb, pos);

  465. }

  466. 

  467. static int mov_write_d263_tag(ByteIOContext *pb)

  468. {

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

  470.     put_tag(pb, "d263");

  471.     put_tag(pb, "FFMP");

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

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

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

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

  476.     return 0xf;

  477. }

  478. 

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

  480. static int mov_write_svq3_tag(ByteIOContext *pb)

  481. {

  482.     put_be32(pb, 0x15);

  483.     put_tag(pb, "SMI ");

  484.     put_tag(pb, "SEQH");

  485.     put_be32(pb, 0x5);

  486.     put_be32(pb, 0xe2c0211d);

  487.     put_be32(pb, 0xc0000000);

  488.     put_byte(pb, 0);

  489.     return 0x15;

  490. }

  491. 

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

  493. {

  494.     int64_t pos = url_ftell(pb);

  495. 

  496.     put_be32(pb, 0);

  497.     put_tag(pb, "avcC");

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

  499.     return updateSize(pb, pos);

  500. }

  501. 

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

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

  504. {

  505.     int i;

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

  507.     put_tag(pb, "ACLR");

  508.     put_tag(pb, "ACLR");

  509.     put_tag(pb, "0001");

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

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

  512. 

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

  514.     put_tag(pb, "APRG");

  515.     put_tag(pb, "APRG");

  516.     put_tag(pb, "0001");

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

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

  519. 

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

  521.     put_tag(pb, "ARES");

  522.     put_tag(pb, "ARES");

  523.     put_tag(pb, "0001");

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

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

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

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

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

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

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

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

  532.     } else {

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

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

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

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

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

  538.         else

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

  540.     }

  541.     /* padding */

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

  543.         put_be64(pb, 0);

  544. 

  545.     /* extra padding for stsd needed */

  546.     put_be32(pb, 0);

  547.     return 0;

  548. }

  549. 

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

  551. {

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

  553. 

  554.     if (!codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))

  555.         return 0;

  556. 

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

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

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

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

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

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

  563. 

  564.     return tag;

  565. }

  566. 

  567. static const AVCodecTag codec_ipod_tags[] = {

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

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

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

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

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

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

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

  575.     { CODEC_ID_NONE, 0 },

  576. };

  577. 

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

  579. {

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

  581. 

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

  583.     if (!(track->enc->codec_type == CODEC_TYPE_SUBTITLE &&

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

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

  586.         tag = codec_get_tag(codec_ipod_tags, track->enc->codec_id);

  587. 

  588.     if (!match_ext(s->filename, "m4a") && !match_ext(s->filename, "m4v"))

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

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

  591. 

  592.     return tag;

  593. }

  594. 

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

  596. {

  597.     int tag;

  598. 

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

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

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

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

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

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

  605. 

  606.     return tag;

  607. }

  608. 

  609. static const struct {

  610.     enum PixelFormat pix_fmt;

  611.     uint32_t tag;

  612.     unsigned bps;

  613. } mov_pix_fmt_tags[] = {

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

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

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

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

  618.     { PIX_FMT_BGR32_1, MKTAG('r','a','w',' '), 32 },

  619. };

  620. 

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

  622. {

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

  624.     int i;

  625. 

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

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

  628.             tag = mov_pix_fmt_tags[i].tag;

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

  630.             break;

  631.         }

  632.     }

  633. 

  634.     return tag;

  635. }

  636. 

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

  638. {

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

  640. 

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

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

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

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

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

  646.             tag = mov_get_dv_codec_tag(s, track);

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

  648.             tag = mov_get_rawvideo_codec_tag(s, track);

  649.         else if (track->enc->codec_type == CODEC_TYPE_VIDEO) {

  650.             tag = codec_get_tag(codec_movvideo_tags, track->enc->codec_id);

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

  652.                 tag = codec_get_tag(codec_bmp_tags, track->enc->codec_id);

  653.                 if (tag)

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

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

  656.             }

  657.         } else if (track->enc->codec_type == CODEC_TYPE_AUDIO) {

  658.             tag = codec_get_tag(codec_movaudio_tags, track->enc->codec_id);

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

  660.                 int ms_tag = codec_get_tag(codec_wav_tags, track->enc->codec_id);

  661.                 if (ms_tag) {

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

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

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

  665.                 }

  666.             }

  667.         } else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE)

  668.             tag = codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);

  669.     }

  670. 

  671.     return tag;

  672. }

  673. 

  674. static const AVCodecTag codec_3gp_tags[] = {

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

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

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

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

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

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

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

  682.     { CODEC_ID_NONE, 0 },

  683. };

  684. 

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

  686. {

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

  688. 

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

  690.         tag = mp4_get_codec_tag(s, track);

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

  692.         tag = ipod_get_codec_tag(s, track);

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

  694.         tag = codec_get_tag(codec_3gp_tags, track->enc->codec_id);

  695.     else

  696.         tag = mov_get_codec_tag(s, track);

  697. 

  698.     return tag;

  699. }

  700. 

  701. /** Write uuid atom.

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

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

  704.  */

  705. static int mov_write_uuid_tag_ipod(ByteIOContext *pb)

  706. {

  707.     put_be32(pb, 28);

  708.     put_tag(pb, "uuid");

  709.     put_be32(pb, 0x6b6840f2);

  710.     put_be32(pb, 0x5f244fc5);

  711.     put_be32(pb, 0xba39a51b);

  712.     put_be32(pb, 0xcf0323f3);

  713.     put_be32(pb, 0x0);

  714.     return 28;

  715. }

  716. 

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

  718. {

  719.     int64_t pos = url_ftell(pb);

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

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

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

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

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

  725. 

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

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

  728. 

  729.     return updateSize(pb, pos);

  730. }

  731. 

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

  733. {

  734.     int64_t pos = url_ftell(pb);

  735.     char compressor_name[32];

  736. 

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

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

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

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

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

  742. 

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

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

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

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

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

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

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

  750.         } else {

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

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

  753.         }

  754.     } else {

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

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

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

  758.     }

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

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

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

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

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

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

  765. 

  766.     memset(compressor_name,0,32);

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

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

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

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

  771.     put_buffer(pb, compressor_name, 31);

  772. 

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

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

  775.     else

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

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

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

  779.         mov_write_esds_tag(pb, track);

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

  781.         mov_write_d263_tag(pb);

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

  783.         mov_write_svq3_tag(pb);

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

  785.         mov_write_avid_tag(pb, track);

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

  787.         mov_write_avcc_tag(pb, track);

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

  789.             mov_write_uuid_tag_ipod(pb);

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

  791.         mov_write_glbl_tag(pb, track);

  792. 

  793.     return updateSize(pb, pos);

  794. }

  795. 

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

  797. {

  798.     int64_t pos = url_ftell(pb);

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

  800.     put_tag(pb, "stsd");

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

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

  803.     if (track->enc->codec_type == CODEC_TYPE_VIDEO)

  804.         mov_write_video_tag(pb, track);

  805.     else if (track->enc->codec_type == CODEC_TYPE_AUDIO)

  806.         mov_write_audio_tag(pb, track);

  807.     else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE)

  808.         mov_write_subtitle_tag(pb, track);

  809.     return updateSize(pb, pos);

  810. }

  811. 

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

  813. {

  814.     MOVStts *ctts_entries;

  815.     uint32_t entries = 0;

  816.     uint32_t atom_size;

  817.     int i;

  818. 

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

  820.     ctts_entries[0].count = 1;

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

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

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

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

  825.         } else {

  826.             entries++;

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

  828.             ctts_entries[entries].count = 1;

  829.         }

  830.     }

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

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

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

  834.     put_tag(pb, "ctts");

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

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

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

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

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

  840.     }

  841.     av_free(ctts_entries);

  842.     return atom_size;

  843. }

  844. 

  845. /* Time to sample atom */

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

  847. {

  848.     MOVStts *stts_entries;

  849.     uint32_t entries = -1;

  850.     uint32_t atom_size;

  851.     int i;

  852. 

  853.     if (track->enc->codec_type == CODEC_TYPE_AUDIO && !track->audio_vbr) {

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

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

  856.         stts_entries[0].duration = 1;

  857.         entries = 1;

  858.     } else {

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

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

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

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

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

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

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

  866.             } else {

  867.                 entries++;

  868.                 stts_entries[entries].duration = duration;

  869.                 stts_entries[entries].count = 1;

  870.             }

  871.         }

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

  873.     }

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

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

  876.     put_tag(pb, "stts");

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

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

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

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

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

  882.     }

  883.     av_free(stts_entries);

  884.     return atom_size;

  885. }

  886. 

  887. static int mov_write_dref_tag(ByteIOContext *pb)

  888. {

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

  890.     put_tag(pb, "dref");

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

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

  893. 

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

  895.     put_tag(pb, "url ");

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

  897. 

  898.     return 28;

  899. }

  900. 

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

  902. {

  903.     int64_t pos = url_ftell(pb);

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

  905.     put_tag(pb, "stbl");

  906.     mov_write_stsd_tag(pb, track);

  907.     mov_write_stts_tag(pb, track);

  908.     if (track->enc->codec_type == CODEC_TYPE_VIDEO &&

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

  910.         mov_write_stss_tag(pb, track);

  911.     if (track->enc->codec_type == CODEC_TYPE_VIDEO &&

  912.         track->hasBframes)

  913.         mov_write_ctts_tag(pb, track);

  914.     mov_write_stsc_tag(pb, track);

  915.     mov_write_stsz_tag(pb, track);

  916.     mov_write_stco_tag(pb, track);

  917.     return updateSize(pb, pos);

  918. }

  919. 

  920. static int mov_write_dinf_tag(ByteIOContext *pb)

  921. {

  922.     int64_t pos = url_ftell(pb);

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

  924.     put_tag(pb, "dinf");

  925.     mov_write_dref_tag(pb);

  926.     return updateSize(pb, pos);

  927. }

  928. 

  929. static int mov_write_nmhd_tag(ByteIOContext *pb)

  930. {

  931.     put_be32(pb, 12);

  932.     put_tag(pb, "nmhd");

  933.     put_be32(pb, 0);

  934.     return 12;

  935. }

  936. 

  937. static int mov_write_gmhd_tag(ByteIOContext *pb)

  938. {

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

  940.     put_tag(pb, "gmhd");

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

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

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

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

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

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

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

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

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

  950.     return 0x20;

  951. }

  952. 

  953. static int mov_write_smhd_tag(ByteIOContext *pb)

  954. {

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

  956.     put_tag(pb, "smhd");

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

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

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

  960.     return 16;

  961. }

  962. 

  963. static int mov_write_vmhd_tag(ByteIOContext *pb)

  964. {

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

  966.     put_tag(pb, "vmhd");

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

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

  969.     return 0x14;

  970. }

  971. 

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

  973. {

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

  975.     int64_t pos = url_ftell(pb);

  976. 

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

  978.         hdlr = "dhlr";

  979.         hdlr_type = "url ";

  980.         descr = "DataHandler";

  981.     } else {

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

  983.         if (track->enc->codec_type == CODEC_TYPE_VIDEO) {

  984.             hdlr_type = "vide";

  985.             descr = "VideoHandler";

  986.         } else if (track->enc->codec_type == CODEC_TYPE_AUDIO) {

  987.             hdlr_type = "soun";

  988.             descr = "SoundHandler";

  989.         } else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE) {

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

  991.             else                                      hdlr_type = "text";

  992.             descr = "SubtitleHandler";

  993.         }

  994.     }

  995. 

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

  997.     put_tag(pb, "hdlr");

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

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

  1000.     put_tag(pb, hdlr_type); /* handler type */

  1001.     put_be32(pb ,0); /* reserved */

  1002.     put_be32(pb ,0); /* reserved */

  1003.     put_be32(pb ,0); /* reserved */

  1004.     put_byte(pb, strlen(descr)); /* string counter */

  1005.     put_buffer(pb, descr, strlen(descr)); /* handler description */

  1006.     return updateSize(pb, pos);

  1007. }

  1008. 

  1009. static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack *track)

  1010. {

  1011.     int64_t pos = url_ftell(pb);

  1012.     put_be32(pb, 0); /* size */

  1013.     put_tag(pb, "minf");

  1014.     if(track->enc->codec_type == CODEC_TYPE_VIDEO)

  1015.         mov_write_vmhd_tag(pb);

  1016.     else if (track->enc->codec_type == CODEC_TYPE_AUDIO)

  1017.         mov_write_smhd_tag(pb);

  1018.     else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE) {

  1019.         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);

  1020.         else                                      mov_write_nmhd_tag(pb);

  1021.     }

  1022.     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */

  1023.         mov_write_hdlr_tag(pb, NULL);

  1024.     mov_write_dinf_tag(pb);

  1025.     mov_write_stbl_tag(pb, track);

  1026.     return updateSize(pb, pos);

  1027. }

  1028. 

  1029. static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack *track)

  1030. {

  1031.     int version = track->trackDuration < INT32_MAX ? 0 : 1;

  1032. 

  1033.     (version == 1) ? put_be32(pb, 44) : put_be32(pb, 32); /* size */

  1034.     put_tag(pb, "mdhd");

  1035.     put_byte(pb, version);

  1036.     put_be24(pb, 0); /* flags */

  1037.     if (version == 1) {

  1038.         put_be64(pb, track->time);

  1039.         put_be64(pb, track->time);

  1040.     } else {

  1041.         put_be32(pb, track->time); /* creation time */

  1042.         put_be32(pb, track->time); /* modification time */

  1043.     }

  1044.     put_be32(pb, track->timescale); /* time scale (sample rate for audio) */

  1045.     (version == 1) ? put_be64(pb, track->trackDuration) : put_be32(pb, track->trackDuration); /* duration */

  1046.     put_be16(pb, track->language); /* language */

  1047.     put_be16(pb, 0); /* reserved (quality) */

  1048. 

  1049.     if(version!=0 && track->mode == MODE_MOV){

  1050.         av_log(NULL, AV_LOG_ERROR,

  1051.             "FATAL error, file duration too long for timebase, this file will not be\n"

  1052.             "playable with quicktime. Choose a different timebase or a different\n"

  1053.             "container format\n");

  1054.     }

  1055. 

  1056.     return 32;

  1057. }

  1058. 

  1059. static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack *track)

  1060. {

  1061.     int64_t pos = url_ftell(pb);

  1062.     put_be32(pb, 0); /* size */

  1063.     put_tag(pb, "mdia");

  1064.     mov_write_mdhd_tag(pb, track);

  1065.     mov_write_hdlr_tag(pb, track);

  1066.     mov_write_minf_tag(pb, track);

  1067.     return updateSize(pb, pos);

  1068. }

  1069. 

  1070. static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1071. {

  1072.     int64_t duration = av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP);

  1073.     int version = duration < INT32_MAX ? 0 : 1;

  1074. 

  1075.     (version == 1) ? put_be32(pb, 104) : put_be32(pb, 92); /* size */

  1076.     put_tag(pb, "tkhd");

  1077.     put_byte(pb, version);

  1078.     put_be24(pb, 0xf); /* flags (track enabled) */

  1079.     if (version == 1) {

  1080.         put_be64(pb, track->time);

  1081.         put_be64(pb, track->time);

  1082.     } else {

  1083.         put_be32(pb, track->time); /* creation time */

  1084.         put_be32(pb, track->time); /* modification time */

  1085.     }

  1086.     put_be32(pb, track->trackID); /* track-id */

  1087.     put_be32(pb, 0); /* reserved */

  1088.     (version == 1) ? put_be64(pb, duration) : put_be32(pb, duration);

  1089. 

  1090.     put_be32(pb, 0); /* reserved */

  1091.     put_be32(pb, 0); /* reserved */

  1092.     put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */

  1093.     /* Volume, only for audio */

  1094.     if(track->enc->codec_type == CODEC_TYPE_AUDIO)

  1095.         put_be16(pb, 0x0100);

  1096.     else

  1097.         put_be16(pb, 0);

  1098.     put_be16(pb, 0); /* reserved */

  1099. 

  1100.     /* Matrix structure */

  1101.     put_be32(pb, 0x00010000); /* reserved */

  1102.     put_be32(pb, 0x0); /* reserved */

  1103.     put_be32(pb, 0x0); /* reserved */

  1104.     put_be32(pb, 0x0); /* reserved */

  1105.     put_be32(pb, 0x00010000); /* reserved */

  1106.     put_be32(pb, 0x0); /* reserved */

  1107.     put_be32(pb, 0x0); /* reserved */

  1108.     put_be32(pb, 0x0); /* reserved */

  1109.     put_be32(pb, 0x40000000); /* reserved */

  1110. 

  1111.     /* Track width and height, for visual only */

  1112.     if(track->enc->codec_type == CODEC_TYPE_VIDEO ||

  1113.        track->enc->codec_type == CODEC_TYPE_SUBTITLE) {

  1114.         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);

  1115.         if(!sample_aspect_ratio || track->height != track->enc->height)

  1116.             sample_aspect_ratio = 1;

  1117.         put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);

  1118.         put_be32(pb, track->height*0x10000);

  1119.     }

  1120.     else {

  1121.         put_be32(pb, 0);

  1122.         put_be32(pb, 0);

  1123.     }

  1124.     return 0x5c;

  1125. }

  1126. 

  1127. // This box seems important for the psp playback ... without it the movie seems to hang

  1128. static int mov_write_edts_tag(ByteIOContext *pb, MOVTrack *track)

  1129. {

  1130.     put_be32(pb, 0x24); /* size  */

  1131.     put_tag(pb, "edts");

  1132.     put_be32(pb, 0x1c); /* size  */

  1133.     put_tag(pb, "elst");

  1134.     put_be32(pb, 0x0);

  1135.     put_be32(pb, 0x1);

  1136. 

  1137.     put_be32(pb, av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP)); /* duration   ... doesn't seem to effect psp */

  1138. 

  1139.     put_be32(pb, track->cluster[0].cts); /* first pts is cts since dts is 0 */

  1140.     put_be32(pb, 0x00010000);

  1141.     return 0x24;

  1142. }

  1143. 

  1144. // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)

  1145. static int mov_write_uuid_tag_psp(ByteIOContext *pb, MOVTrack *mov)

  1146. {

  1147.     put_be32(pb, 0x34); /* size ... reports as 28 in mp4box! */

  1148.     put_tag(pb, "uuid");

  1149.     put_tag(pb, "USMT");

  1150.     put_be32(pb, 0x21d24fce);

  1151.     put_be32(pb, 0xbb88695c);

  1152.     put_be32(pb, 0xfac9c740);

  1153.     put_be32(pb, 0x1c);     // another size here!

  1154.     put_tag(pb, "MTDT");

  1155.     put_be32(pb, 0x00010012);

  1156.     put_be32(pb, 0x0a);

  1157.     put_be32(pb, 0x55c40000);

  1158.     put_be32(pb, 0x1);

  1159.     put_be32(pb, 0x0);

  1160.     return 0x34;

  1161. }

  1162. 

  1163. static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1164. {

  1165.     int64_t pos = url_ftell(pb);

  1166.     put_be32(pb, 0); /* size */

  1167.     put_tag(pb, "trak");

  1168.     mov_write_tkhd_tag(pb, track, st);

  1169.     if (track->mode == MODE_PSP || track->hasBframes)

  1170.         mov_write_edts_tag(pb, track);  // PSP Movies require edts box

  1171.     mov_write_mdia_tag(pb, track);

  1172.     if (track->mode == MODE_PSP)

  1173.         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box

  1174.     return updateSize(pb, pos);

  1175. }

  1176. 

  1177. #if 0

  1178. /* TODO: Not sorted out, but not necessary either */

  1179. static int mov_write_iods_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1180. {

  1181.     put_be32(pb, 0x15); /* size */

  1182.     put_tag(pb, "iods");

  1183.     put_be32(pb, 0);    /* version & flags */

  1184.     put_be16(pb, 0x1007);

  1185.     put_byte(pb, 0);

  1186.     put_be16(pb, 0x4fff);

  1187.     put_be16(pb, 0xfffe);

  1188.     put_be16(pb, 0x01ff);

  1189.     return 0x15;

  1190. }

  1191. #endif

  1192. 

  1193. static int mov_write_mvhd_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1194. {

  1195.     int maxTrackID = 1, i;

  1196.     int64_t maxTrackLenTemp, maxTrackLen = 0;

  1197.     int version;

  1198. 

  1199.     for (i=0; i<mov->nb_streams; i++) {

  1200.         if(mov->tracks[i].entry > 0) {

  1201.             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration, globalTimescale, mov->tracks[i].timescale, AV_ROUND_UP);

  1202.             if(maxTrackLen < maxTrackLenTemp)

  1203.                 maxTrackLen = maxTrackLenTemp;

  1204.             if(maxTrackID < mov->tracks[i].trackID)

  1205.                 maxTrackID = mov->tracks[i].trackID;

  1206.         }

  1207.     }

  1208. 

  1209.     version = maxTrackLen < UINT32_MAX ? 0 : 1;

  1210.     (version == 1) ? put_be32(pb, 120) : put_be32(pb, 108); /* size */

  1211.     put_tag(pb, "mvhd");

  1212.     put_byte(pb, version);

  1213.     put_be24(pb, 0); /* flags */

  1214.     if (version == 1) {

  1215.         put_be64(pb, mov->time);

  1216.         put_be64(pb, mov->time);

  1217.     } else {

  1218.         put_be32(pb, mov->time); /* creation time */

  1219.         put_be32(pb, mov->time); /* modification time */

  1220.     }

  1221.     put_be32(pb, mov->timescale); /* timescale */

  1222.     (version == 1) ? put_be64(pb, maxTrackLen) : put_be32(pb, maxTrackLen); /* duration of longest track */

  1223. 

  1224.     put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */

  1225.     put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */

  1226.     put_be16(pb, 0); /* reserved */

  1227.     put_be32(pb, 0); /* reserved */

  1228.     put_be32(pb, 0); /* reserved */

  1229. 

  1230.     /* Matrix structure */

  1231.     put_be32(pb, 0x00010000); /* reserved */

  1232.     put_be32(pb, 0x0); /* reserved */

  1233.     put_be32(pb, 0x0); /* reserved */

  1234.     put_be32(pb, 0x0); /* reserved */

  1235.     put_be32(pb, 0x00010000); /* reserved */

  1236.     put_be32(pb, 0x0); /* reserved */

  1237.     put_be32(pb, 0x0); /* reserved */

  1238.     put_be32(pb, 0x0); /* reserved */

  1239.     put_be32(pb, 0x40000000); /* reserved */

  1240. 

  1241.     put_be32(pb, 0); /* reserved (preview time) */

  1242.     put_be32(pb, 0); /* reserved (preview duration) */

  1243.     put_be32(pb, 0); /* reserved (poster time) */

  1244.     put_be32(pb, 0); /* reserved (selection time) */

  1245.     put_be32(pb, 0); /* reserved (selection duration) */

  1246.     put_be32(pb, 0); /* reserved (current time) */

  1247.     put_be32(pb, maxTrackID+1); /* Next track id */

  1248.     return 0x6c;

  1249. }

  1250. 

  1251. static int mov_write_itunes_hdlr_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1252.                                      AVFormatContext *s)

  1253. {

  1254.     int64_t pos = url_ftell(pb);

  1255.     put_be32(pb, 0); /* size */

  1256.     put_tag(pb, "hdlr");

  1257.     put_be32(pb, 0);

  1258.     put_be32(pb, 0);

  1259.     put_tag(pb, "mdir");

  1260.     put_tag(pb, "appl");

  1261.     put_be32(pb, 0);

  1262.     put_be32(pb, 0);

  1263.     put_be16(pb, 0);

  1264.     return updateSize(pb, pos);

  1265. }

  1266. 

  1267. /* helper function to write a data tag with the specified string as data */

  1268. static int mov_write_string_data_tag(ByteIOContext *pb, const char *data, int lang, int long_style)

  1269. {

  1270.     if(long_style){

  1271.         int64_t pos = url_ftell(pb);

  1272.         put_be32(pb, 0); /* size */

  1273.         put_tag(pb, "data");

  1274.         put_be32(pb, 1);

  1275.         put_be32(pb, 0);

  1276.         put_buffer(pb, data, strlen(data));

  1277.         return updateSize(pb, pos);

  1278.     }else{

  1279.         put_be16(pb, strlen(data)); /* string length */

  1280.         put_be16(pb, lang);

  1281.         put_buffer(pb, data, strlen(data));

  1282.         return strlen(data) + 4;

  1283.     }

  1284. }

  1285. 

  1286. static int mov_write_string_tag(ByteIOContext *pb, const char *name, const char *value, int lang, int long_style){

  1287.     int size = 0;

  1288.     if (value && value[0]) {

  1289.         int64_t pos = url_ftell(pb);

  1290.         put_be32(pb, 0); /* size */

  1291.         put_tag(pb, name);

  1292.         mov_write_string_data_tag(pb, value, lang, long_style);

  1293.         size= updateSize(pb, pos);

  1294.     }

  1295.     return size;

  1296. }

  1297. 

  1298. static int mov_write_string_metadata(AVFormatContext *s, ByteIOContext *pb,

  1299.                                      const char *name, const char *tag,

  1300.                                      int long_style)

  1301. {

  1302.     int l, lang = 0, len, len2;

  1303.     AVMetadataTag *t, *t2 = NULL;

  1304.     char tag2[16];

  1305. 

  1306.     if (!(t = av_metadata_get(s->metadata, tag, NULL, 0)))

  1307.         return 0;

  1308. 

  1309.     len = strlen(t->key);

  1310.     snprintf(tag2, sizeof(tag2), "%s-", tag);

  1311.     while ((t2 = av_metadata_get(s->metadata, tag2, t2, AV_METADATA_IGNORE_SUFFIX))) {

  1312.         len2 = strlen(t2->key);

  1313.         if (len2 == len+4 && !strcmp(t->value, t2->value)

  1314.             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 0)) >= 0) {

  1315.             lang = l;

  1316.             break;

  1317.         }

  1318.     }

  1319.     return mov_write_string_tag(pb, name, t->value, lang, long_style);

  1320. }

  1321. 

  1322. /* iTunes track number */

  1323. static int mov_write_trkn_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1324.                               AVFormatContext *s)

  1325. {

  1326.     AVMetadataTag *t = av_metadata_get(s->metadata, "track", NULL, 0);

  1327.     int size = 0, track = t ? atoi(t->value) : 0;

  1328.     if (track) {

  1329.         int64_t pos = url_ftell(pb);

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

  1331.         put_tag(pb, "trkn");

  1332.         {

  1333.             int64_t pos = url_ftell(pb);

  1334.             put_be32(pb, 0); /* size */

  1335.             put_tag(pb, "data");

  1336.             put_be32(pb, 0);        // 8 bytes empty

  1337.             put_be32(pb, 0);

  1338.             put_be16(pb, 0);        // empty

  1339.             put_be16(pb, track);    // track number

  1340.             put_be16(pb, 0);        // total track number

  1341.             put_be16(pb, 0);        // empty

  1342.             updateSize(pb, pos);

  1343.         }

  1344.         size = updateSize(pb, pos);

  1345.     }

  1346.     return size;

  1347. }

  1348. 

  1349. /* iTunes meta data list */

  1350. static int mov_write_ilst_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1351.                               AVFormatContext *s)

  1352. {

  1353.     int64_t pos = url_ftell(pb);

  1354.     put_be32(pb, 0); /* size */

  1355.     put_tag(pb, "ilst");

  1356.     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);

  1357.     mov_write_string_metadata(s, pb, "\251ART", "author"   , 1);

  1358.     mov_write_string_metadata(s, pb, "\251wrt", "author"   , 1);

  1359.     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);

  1360.     mov_write_string_metadata(s, pb, "\251day", "year"     , 1);

  1361.     mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);

  1362.     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);

  1363.     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);

  1364.     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);

  1365.     mov_write_trkn_tag(pb, mov, s);

  1366.     return updateSize(pb, pos);

  1367. }

  1368. 

  1369. /* iTunes meta data tag */

  1370. static int mov_write_meta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1371.                               AVFormatContext *s)

  1372. {

  1373.     int size = 0;

  1374.     int64_t pos = url_ftell(pb);

  1375.     put_be32(pb, 0); /* size */

  1376.     put_tag(pb, "meta");

  1377.     put_be32(pb, 0);

  1378.     mov_write_itunes_hdlr_tag(pb, mov, s);

  1379.     mov_write_ilst_tag(pb, mov, s);

  1380.     size = updateSize(pb, pos);

  1381.     return size;

  1382. }

  1383. 

  1384. static int utf8len(const uint8_t *b)

  1385. {

  1386.     int len=0;

  1387.     int val;

  1388.     while(*b){

  1389.         GET_UTF8(val, *b++, return -1;)

  1390.         len++;

  1391.     }

  1392.     return len;

  1393. }

  1394. 

  1395. static int ascii_to_wc(ByteIOContext *pb, const uint8_t *b)

  1396. {

  1397.     int val;

  1398.     while(*b){

  1399.         GET_UTF8(val, *b++, return -1;)

  1400.         put_be16(pb, val);

  1401.     }

  1402.     put_be16(pb, 0x00);

  1403.     return 0;

  1404. }

  1405. 

  1406. static uint16_t language_code(const char *str)

  1407. {

  1408.     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);

  1409. }

  1410. 

  1411. static int mov_write_3gp_udta_tag(ByteIOContext *pb, AVFormatContext *s,

  1412.                                   const char *tag, const char *str)

  1413. {

  1414.     int64_t pos = url_ftell(pb);

  1415.     AVMetadataTag *t = av_metadata_get(s->metadata, str, NULL, 0);

  1416.     if (!t || !utf8len(t->value))

  1417.         return 0;

  1418.     put_be32(pb, 0);   /* size */

  1419.     put_tag (pb, tag); /* type */

  1420.     put_be32(pb, 0);   /* version + flags */

  1421.     if (!strcmp(tag, "yrrc"))

  1422.         put_be16(pb, atoi(t->value));

  1423.     else {

  1424.         put_be16(pb, language_code("eng")); /* language */

  1425.         ascii_to_wc(pb, t->value);

  1426.         if (!strcmp(tag, "albm") &&

  1427.             (t = av_metadata_get(s->metadata, "year", NULL, 0)))

  1428.             put_byte(pb, atoi(t->value));

  1429.     }

  1430.     return updateSize(pb, pos);

  1431. }

  1432. 

  1433. static int mov_write_udta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1434.                               AVFormatContext *s)

  1435. {

  1436.     ByteIOContext *pb_buf;

  1437.     int i, ret, size;

  1438.     uint8_t *buf;

  1439. 

  1440.     for (i = 0; i < s->nb_streams; i++)

  1441.         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {

  1442.             return 0;

  1443.         }

  1444. 

  1445.     ret = url_open_dyn_buf(&pb_buf);

  1446.     if(ret < 0)

  1447.         return ret;

  1448. 

  1449.         if (mov->mode & MODE_3GP) {

  1450.             mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");

  1451.             mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");

  1452.             mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");

  1453.             mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");

  1454.             mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");

  1455.             mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");

  1456.             mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "year");

  1457.         } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4

  1458.             mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);

  1459.             mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);

  1460.             mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);

  1461.             mov_write_string_metadata(s, pb_buf, "\251day", "year"       , 0);

  1462.             mov_write_string_tag(pb_buf, "\251enc", LIBAVFORMAT_IDENT, 0, 0);

  1463.             mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);

  1464.             mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);

  1465.             mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);

  1466.         } else {

  1467.             /* iTunes meta data */

  1468.             mov_write_meta_tag(pb_buf, mov, s);

  1469.         }

  1470. 

  1471.     if ((size = url_close_dyn_buf(pb_buf, &buf)) > 0) {

  1472.         put_be32(pb, size+8);

  1473.         put_tag(pb, "udta");

  1474.         put_buffer(pb, buf, size);

  1475.         av_free(buf);

  1476.     }

  1477. 

  1478.     return 0;

  1479. }

  1480. 

  1481. static void mov_write_psp_udta_tag(ByteIOContext *pb,

  1482.                                   const char *str, const char *lang, int type)

  1483. {

  1484.     int len = utf8len(str)+1;

  1485.     if(len<=0)

  1486.         return;

  1487.     put_be16(pb, len*2+10);            /* size */

  1488.     put_be32(pb, type);                /* type */

  1489.     put_be16(pb, language_code(lang)); /* language */

  1490.     put_be16(pb, 0x01);                /* ? */

  1491.     ascii_to_wc(pb, str);

  1492. }

  1493. 

  1494. static int mov_write_uuidusmt_tag(ByteIOContext *pb, AVFormatContext *s)

  1495. {

  1496.     AVMetadataTag *title = av_metadata_get(s->metadata, "title", NULL, 0);

  1497.     int64_t pos, pos2;

  1498. 

  1499.     if (title) {

  1500.         pos = url_ftell(pb);

  1501.         put_be32(pb, 0); /* size placeholder*/

  1502.         put_tag(pb, "uuid");

  1503.         put_tag(pb, "USMT");

  1504.         put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1505.         put_be32(pb, 0xbb88695c);

  1506.         put_be32(pb, 0xfac9c740);

  1507. 

  1508.         pos2 = url_ftell(pb);

  1509.         put_be32(pb, 0); /* size placeholder*/

  1510.         put_tag(pb, "MTDT");

  1511.         put_be16(pb, 4);

  1512. 

  1513.         // ?

  1514.         put_be16(pb, 0x0C);                 /* size */

  1515.         put_be32(pb, 0x0B);                 /* type */

  1516.         put_be16(pb, language_code("und")); /* language */

  1517.         put_be16(pb, 0x0);                  /* ? */

  1518.         put_be16(pb, 0x021C);               /* data */

  1519. 

  1520.         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);

  1521.         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);

  1522. //        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);

  1523.         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);

  1524. 

  1525.         updateSize(pb, pos2);

  1526.         return updateSize(pb, pos);

  1527.     }

  1528. 

  1529.     return 0;

  1530. }

  1531. 

  1532. static int mov_write_moov_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1533.                               AVFormatContext *s)

  1534. {

  1535.     int i;

  1536.     int64_t pos = url_ftell(pb);

  1537.     put_be32(pb, 0); /* size placeholder*/

  1538.     put_tag(pb, "moov");

  1539.     mov->timescale = globalTimescale;

  1540. 

  1541.     for (i=0; i<mov->nb_streams; i++) {

  1542.         if(mov->tracks[i].entry <= 0) continue;

  1543. 

  1544.         mov->tracks[i].time = mov->time;

  1545.         mov->tracks[i].trackID = i+1;

  1546.     }

  1547. 

  1548.     mov_write_mvhd_tag(pb, mov);

  1549.     //mov_write_iods_tag(pb, mov);

  1550.     for (i=0; i<mov->nb_streams; i++) {

  1551.         if(mov->tracks[i].entry > 0) {

  1552.             mov_write_trak_tag(pb, &(mov->tracks[i]), s->streams[i]);

  1553.         }

  1554.     }

  1555. 

  1556.     if (mov->mode == MODE_PSP)

  1557.         mov_write_uuidusmt_tag(pb, s);

  1558.     else

  1559.         mov_write_udta_tag(pb, mov, s);

  1560. 

  1561.     return updateSize(pb, pos);

  1562. }

  1563. 

  1564. static int mov_write_mdat_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1565. {

  1566.     put_be32(pb, 8);    // placeholder for extended size field (64 bit)

  1567.     put_tag(pb, mov->mode == MODE_MOV ? "wide" : "free");

  1568. 

  1569.     mov->mdat_pos = url_ftell(pb);

  1570.     put_be32(pb, 0); /* size placeholder*/

  1571.     put_tag(pb, "mdat");

  1572.     return 0;

  1573. }

  1574. 

  1575. /* TODO: This needs to be more general */

  1576. static int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)

  1577. {

  1578.     MOVMuxContext *mov = s->priv_data;

  1579.     int64_t pos = url_ftell(pb);

  1580.     int has_h264 = 0, has_video = 0;

  1581.     int minor = 0x200;

  1582.     int i;

  1583. 

  1584.     for (i = 0; i < s->nb_streams; i++) {

  1585.         AVStream *st = s->streams[i];

  1586.         if (st->codec->codec_type == CODEC_TYPE_VIDEO)

  1587.             has_video = 1;

  1588.         if (st->codec->codec_id == CODEC_ID_H264)

  1589.             has_h264 = 1;

  1590.     }

  1591. 

  1592.     put_be32(pb, 0); /* size */

  1593.     put_tag(pb, "ftyp");

  1594. 

  1595.     if (mov->mode == MODE_3GP) {

  1596.         put_tag(pb, has_h264 ? "3gp6"  : "3gp4");

  1597.         minor =     has_h264 ?   0x100 :   0x200;

  1598.     } else if (mov->mode & MODE_3G2) {

  1599.         put_tag(pb, has_h264 ? "3g2b"  : "3g2a");

  1600.         minor =     has_h264 ? 0x20000 : 0x10000;

  1601.     }else if (mov->mode == MODE_PSP)

  1602.         put_tag(pb, "MSNV");

  1603.     else if (mov->mode == MODE_MP4)

  1604.         put_tag(pb, "isom");

  1605.     else if (mov->mode == MODE_IPOD)

  1606.         put_tag(pb, has_video ? "M4V ":"M4A ");

  1607.     else

  1608.         put_tag(pb, "qt  ");

  1609. 

  1610.     put_be32(pb, minor);

  1611. 

  1612.     if(mov->mode == MODE_MOV)

  1613.         put_tag(pb, "qt  ");

  1614.     else{

  1615.         put_tag(pb, "isom");

  1616.         put_tag(pb, "iso2");

  1617.         if(has_h264)

  1618.             put_tag(pb, "avc1");

  1619.     }

  1620. 

  1621.     if (mov->mode == MODE_3GP)

  1622.         put_tag(pb, has_h264 ? "3gp6":"3gp4");

  1623.     else if (mov->mode & MODE_3G2)

  1624.         put_tag(pb, has_h264 ? "3g2b":"3g2a");

  1625.     else if (mov->mode == MODE_PSP)

  1626.         put_tag(pb, "MSNV");

  1627.     else if (mov->mode == MODE_MP4)

  1628.         put_tag(pb, "mp41");

  1629.     return updateSize(pb, pos);

  1630. }

  1631. 

  1632. static void mov_write_uuidprof_tag(ByteIOContext *pb, AVFormatContext *s)

  1633. {

  1634.     AVCodecContext *VideoCodec = s->streams[0]->codec;

  1635.     AVCodecContext *AudioCodec = s->streams[1]->codec;

  1636.     int AudioRate = AudioCodec->sample_rate;

  1637.     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);

  1638.     int audio_kbitrate= AudioCodec->bit_rate / 1000;

  1639.     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);

  1640. 

  1641.     put_be32(pb, 0x94); /* size */

  1642.     put_tag(pb, "uuid");

  1643.     put_tag(pb, "PROF");

  1644. 

  1645.     put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1646.     put_be32(pb, 0xbb88695c);

  1647.     put_be32(pb, 0xfac9c740);

  1648. 

  1649.     put_be32(pb, 0x0);  /* ? */

  1650.     put_be32(pb, 0x3);  /* 3 sections ? */

  1651. 

  1652.     put_be32(pb, 0x14); /* size */

  1653.     put_tag(pb, "FPRF");

  1654.     put_be32(pb, 0x0);  /* ? */

  1655.     put_be32(pb, 0x0);  /* ? */

  1656.     put_be32(pb, 0x0);  /* ? */

  1657. 

  1658.     put_be32(pb, 0x2c);  /* size */

  1659.     put_tag(pb, "APRF");   /* audio */

  1660.     put_be32(pb, 0x0);

  1661.     put_be32(pb, 0x2);   /* TrackID */

  1662.     put_tag(pb, "mp4a");

  1663.     put_be32(pb, 0x20f);

  1664.     put_be32(pb, 0x0);

  1665.     put_be32(pb, audio_kbitrate);

  1666.     put_be32(pb, audio_kbitrate);

  1667.     put_be32(pb, AudioRate);

  1668.     put_be32(pb, AudioCodec->channels);

  1669. 

  1670.     put_be32(pb, 0x34);  /* size */

  1671.     put_tag(pb, "VPRF");   /* video */

  1672.     put_be32(pb, 0x0);

  1673.     put_be32(pb, 0x1);    /* TrackID */

  1674.     if (VideoCodec->codec_id == CODEC_ID_H264) {

  1675.         put_tag(pb, "avc1");

  1676.         put_be16(pb, 0x014D);

  1677.         put_be16(pb, 0x0015);

  1678.     } else {

  1679.         put_tag(pb, "mp4v");

  1680.         put_be16(pb, 0x0000);

  1681.         put_be16(pb, 0x0103);

  1682.     }

  1683.     put_be32(pb, 0x0);

  1684.     put_be32(pb, video_kbitrate);

  1685.     put_be32(pb, video_kbitrate);

  1686.     put_be32(pb, FrameRate);

  1687.     put_be32(pb, FrameRate);

  1688.     put_be16(pb, VideoCodec->width);

  1689.     put_be16(pb, VideoCodec->height);

  1690.     put_be32(pb, 0x010001); /* ? */

  1691. }

  1692. 

  1693. static int mov_write_header(AVFormatContext *s)

  1694. {

  1695.     ByteIOContext *pb = s->pb;

  1696.     MOVMuxContext *mov = s->priv_data;

  1697.     int i;

  1698. 

  1699.     if (url_is_streamed(s->pb)) {

  1700.         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");

  1701.         return -1;

  1702.     }

  1703. 

  1704.     /* Default mode == MP4 */

  1705.     mov->mode = MODE_MP4;

  1706. 

  1707.     if (s->oformat != NULL) {

  1708.         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;

  1709.         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;

  1710.         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;

  1711.         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;

  1712.         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;

  1713. 

  1714.         mov_write_ftyp_tag(pb,s);

  1715.         if (mov->mode == MODE_PSP) {

  1716.             if (s->nb_streams != 2) {

  1717.                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");

  1718.                 return -1;

  1719.             }

  1720.             mov_write_uuidprof_tag(pb,s);

  1721.         }

  1722.     }

  1723. 

  1724.     mov->tracks = av_mallocz(s->nb_streams*sizeof(*mov->tracks));

  1725.     if (!mov->tracks)

  1726.         return AVERROR(ENOMEM);

  1727. 

  1728.     for(i=0; i<s->nb_streams; i++){

  1729.         AVStream *st= s->streams[i];

  1730.         MOVTrack *track= &mov->tracks[i];

  1731.         AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL,0);

  1732. 

  1733.         track->enc = st->codec;

  1734.         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);

  1735.         if (track->language < 0)

  1736.             track->language = 0;

  1737.         track->mode = mov->mode;

  1738.         track->tag = mov_find_codec_tag(s, track);

  1739.         if (!track->tag) {

  1740.             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "

  1741.                    "codec not currently supported in container\n", i);

  1742.             goto error;

  1743.         }

  1744.         if(st->codec->codec_type == CODEC_TYPE_VIDEO){

  1745.             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||

  1746.                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||

  1747.                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {

  1748.                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {

  1749.                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");

  1750.                     goto error;

  1751.                 }

  1752.                 track->height = track->tag>>24 == 'n' ? 486 : 576;

  1753.             }

  1754.             track->timescale = st->codec->time_base.den;

  1755.             av_set_pts_info(st, 64, 1, st->codec->time_base.den);

  1756.             if (track->mode == MODE_MOV && track->timescale > 100000)

  1757.                 av_log(s, AV_LOG_WARNING,

  1758.                        "WARNING codec timebase is very high. If duration is too long,\n"

  1759.                        "file may not be playable by quicktime. Specify a shorter timebase\n"

  1760.                        "or choose different container.\n");

  1761.         }else if(st->codec->codec_type == CODEC_TYPE_AUDIO){

  1762.             track->timescale = st->codec->sample_rate;

  1763.             av_set_pts_info(st, 64, 1, st->codec->sample_rate);

  1764.             if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {

  1765.                 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);

  1766.                 goto error;

  1767.             }else if(st->codec->frame_size > 1){ /* assume compressed audio */

  1768.                 track->audio_vbr = 1;

  1769.             }else{

  1770.                 st->codec->frame_size = 1;

  1771.                 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;

  1772.             }

  1773.             if(track->mode != MODE_MOV &&

  1774.                track->enc->codec_id == CODEC_ID_MP3 && track->enc->sample_rate < 16000){

  1775.                 av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",

  1776.                        i, track->enc->sample_rate);

  1777.                 goto error;

  1778.             }

  1779.         }else if(st->codec->codec_type == CODEC_TYPE_SUBTITLE){

  1780.             track->timescale = st->codec->time_base.den;

  1781.             av_set_pts_info(st, 64, 1, st->codec->time_base.den);

  1782.         }

  1783.         if (!track->height)

  1784.             track->height = st->codec->height;

  1785.     }

  1786. 

  1787.     mov_write_mdat_tag(pb, mov);

  1788.     mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based

  1789.     mov->nb_streams = s->nb_streams;

  1790. 

  1791.     put_flush_packet(pb);

  1792. 

  1793.     return 0;

  1794.  error:

  1795.     av_freep(&mov->tracks);

  1796.     return -1;

  1797. }

  1798. 

  1799. static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)

  1800. {

  1801.     MOVMuxContext *mov = s->priv_data;

  1802.     ByteIOContext *pb = s->pb;

  1803.     MOVTrack *trk = &mov->tracks[pkt->stream_index];

  1804.     AVCodecContext *enc = trk->enc;

  1805.     unsigned int samplesInChunk = 0;

  1806.     int size= pkt->size;

  1807. 

  1808.     if (url_is_streamed(s->pb)) return 0; /* Can't handle that */

  1809.     if (!size) return 0; /* Discard 0 sized packets */

  1810. 

  1811.     if (enc->codec_id == CODEC_ID_AMR_NB) {

  1812.         /* We must find out how many AMR blocks there are in one packet */

  1813.         static uint16_t packed_size[16] =

  1814.             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};

  1815.         int len = 0;

  1816. 

  1817.         while (len < size && samplesInChunk < 100) {

  1818.             len += packed_size[(pkt->data[len] >> 3) & 0x0F];

  1819.             samplesInChunk++;

  1820.         }

  1821.         if(samplesInChunk > 1){

  1822.             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");

  1823.             return -1;

  1824.         }

  1825.     } else if (trk->sampleSize)

  1826.         samplesInChunk = size/trk->sampleSize;

  1827.     else

  1828.         samplesInChunk = 1;

  1829. 

  1830.     /* copy extradata if it exists */

  1831.     if (trk->vosLen == 0 && enc->extradata_size > 0) {

  1832.         trk->vosLen = enc->extradata_size;

  1833.         trk->vosData = av_malloc(trk->vosLen);

  1834.         memcpy(trk->vosData, enc->extradata, trk->vosLen);

  1835.     }

  1836. 

  1837.     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {

  1838.         /* from x264 or from bytestream h264 */

  1839.         /* nal reformating needed */

  1840.         size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);

  1841.     } else {

  1842.         put_buffer(pb, pkt->data, size);

  1843.     }

  1844. 

  1845.     if ((enc->codec_id == CODEC_ID_DNXHD ||

  1846.                 enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {

  1847.         /* copy frame to create needed atoms */

  1848.         trk->vosLen = size;

  1849.         trk->vosData = av_malloc(size);

  1850.         if (!trk->vosData)

  1851.             return AVERROR(ENOMEM);

  1852.         memcpy(trk->vosData, pkt->data, size);

  1853.     }

  1854. 

  1855.     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {

  1856.         trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));

  1857.         if (!trk->cluster)

  1858.             return -1;

  1859.     }

  1860. 

  1861.     trk->cluster[trk->entry].pos = url_ftell(pb) - size;

  1862.     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;

  1863.     trk->cluster[trk->entry].size = size;

  1864.     trk->cluster[trk->entry].entries = samplesInChunk;

  1865.     trk->cluster[trk->entry].dts = pkt->dts;

  1866.     trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;

  1867. 

  1868.     if (pkt->pts == AV_NOPTS_VALUE) {

  1869.         av_log(s, AV_LOG_WARNING, "pts has no value\n");

  1870.         pkt->pts = pkt->dts;

  1871.     }

  1872.     if (pkt->dts != pkt->pts)

  1873.         trk->hasBframes = 1;

  1874.     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;

  1875.     trk->cluster[trk->entry].key_frame = !!(pkt->flags & PKT_FLAG_KEY);

  1876.     if(trk->cluster[trk->entry].key_frame)

  1877.         trk->hasKeyframes++;

  1878.     trk->entry++;

  1879.     trk->sampleCount += samplesInChunk;

  1880.     mov->mdat_size += size;

  1881. 

  1882.     put_flush_packet(pb);

  1883.     return 0;

  1884. }

  1885. 

  1886. static int mov_write_trailer(AVFormatContext *s)

  1887. {

  1888.     MOVMuxContext *mov = s->priv_data;

  1889.     ByteIOContext *pb = s->pb;

  1890.     int res = 0;

  1891.     int i;

  1892. 

  1893.     int64_t moov_pos = url_ftell(pb);

  1894. 

  1895.     /* Write size of mdat tag */

  1896.     if (mov->mdat_size+8 <= UINT32_MAX) {

  1897.         url_fseek(pb, mov->mdat_pos, SEEK_SET);

  1898.         put_be32(pb, mov->mdat_size+8);

  1899.     } else {

  1900.         /* overwrite 'wide' placeholder atom */

  1901.         url_fseek(pb, mov->mdat_pos - 8, SEEK_SET);

  1902.         put_be32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */

  1903.         put_tag(pb, "mdat");

  1904.         put_be64(pb, mov->mdat_size+16);

  1905.     }

  1906.     url_fseek(pb, moov_pos, SEEK_SET);

  1907. 

  1908.     mov_write_moov_tag(pb, mov, s);

  1909. 

  1910.     for (i=0; i<mov->nb_streams; i++) {

  1911.         av_freep(&mov->tracks[i].cluster);

  1912. 

  1913.         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);

  1914. 

  1915.     }

  1916. 

  1917.     put_flush_packet(pb);

  1918. 

  1919.     av_freep(&mov->tracks);

  1920. 

  1921.     return res;

  1922. }

  1923. 

  1924. #if CONFIG_MOV_MUXER

  1925. AVOutputFormat mov_muxer = {

  1926.     "mov",

  1927.     NULL_IF_CONFIG_SMALL("MOV format"),

  1928.     NULL,

  1929.     "mov",

  1930.     sizeof(MOVMuxContext),

  1931.     CODEC_ID_AAC,

  1932.     CODEC_ID_MPEG4,

  1933.     mov_write_header,

  1934.     mov_write_packet,

  1935.     mov_write_trailer,

  1936.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  1937.     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},

  1938. };

  1939. #endif

  1940. #if CONFIG_TGP_MUXER

  1941. AVOutputFormat tgp_muxer = {

  1942.     "3gp",

  1943.     NULL_IF_CONFIG_SMALL("3GP format"),

  1944.     NULL,

  1945.     "3gp",

  1946.     sizeof(MOVMuxContext),

  1947.     CODEC_ID_AMR_NB,

  1948.     CODEC_ID_H263,

  1949.     mov_write_header,

  1950.     mov_write_packet,

  1951.     mov_write_trailer,

  1952.     .flags = AVFMT_GLOBALHEADER,

  1953.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  1954. };

  1955. #endif

  1956. #if CONFIG_MP4_MUXER

  1957. AVOutputFormat mp4_muxer = {

  1958.     "mp4",

  1959.     NULL_IF_CONFIG_SMALL("MP4 format"),

  1960.     "application/mp4",

  1961.     "mp4",

  1962.     sizeof(MOVMuxContext),

  1963.     CODEC_ID_AAC,

  1964.     CODEC_ID_MPEG4,

  1965.     mov_write_header,

  1966.     mov_write_packet,

  1967.     mov_write_trailer,

  1968.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  1969.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  1970. };

  1971. #endif

  1972. #if CONFIG_PSP_MUXER

  1973. AVOutputFormat psp_muxer = {

  1974.     "psp",

  1975.     NULL_IF_CONFIG_SMALL("PSP MP4 format"),

  1976.     NULL,

  1977.     "mp4,psp",

  1978.     sizeof(MOVMuxContext),

  1979.     CODEC_ID_AAC,

  1980.     CODEC_ID_MPEG4,

  1981.     mov_write_header,

  1982.     mov_write_packet,

  1983.     mov_write_trailer,

  1984.     .flags = AVFMT_GLOBALHEADER,

  1985.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  1986. };

  1987. #endif

  1988. #if CONFIG_TG2_MUXER

  1989. AVOutputFormat tg2_muxer = {

  1990.     "3g2",

  1991.     NULL_IF_CONFIG_SMALL("3GP2 format"),

  1992.     NULL,

  1993.     "3g2",

  1994.     sizeof(MOVMuxContext),

  1995.     CODEC_ID_AMR_NB,

  1996.     CODEC_ID_H263,

  1997.     mov_write_header,

  1998.     mov_write_packet,

  1999.     mov_write_trailer,

  2000.     .flags = AVFMT_GLOBALHEADER,

  2001.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  2002. };

  2003. #endif

  2004. #if CONFIG_IPOD_MUXER

  2005. AVOutputFormat ipod_muxer = {

  2006.     "ipod",

  2007.     NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),

  2008.     "application/mp4",

  2009.     "m4v,m4a",

  2010.     sizeof(MOVMuxContext),

  2011.     CODEC_ID_AAC,

  2012.     CODEC_ID_H264,

  2013.     mov_write_header,

  2014.     mov_write_packet,

  2015.     mov_write_trailer,

  2016.     .flags = AVFMT_GLOBALHEADER,

  2017.     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},

  2018. };

  2019. #endif