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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/bitstream.h"

  30. 

  31. #undef NDEBUG

  32. #include <assert.h>

  33. 

  34. #define MOV_INDEX_CLUSTER_SIZE 16384

  35. #define globalTimescale 1000

  36. 

  37. #define MODE_MP4  0x01

  38. #define MODE_MOV  0x02

  39. #define MODE_3GP  0x04

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

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

  42. #define MODE_3G2  0x10

  43. #define MODE_IPOD 0x20

  44. 

  45. typedef struct MOVIentry {

  46.     unsigned int flags, size;

  47.     uint64_t     pos;

  48.     unsigned int samplesInChunk;

  49.     char         key_frame;

  50.     unsigned int entries;

  51.     int64_t      cts;

  52.     int64_t      dts;

  53. } MOVIentry;

  54. 

  55. typedef struct MOVIndex {

  56.     int         mode;

  57.     int         entry;

  58.     long        timescale;

  59.     long        time;

  60.     int64_t     trackDuration;

  61.     long        sampleCount;

  62.     long        sampleSize;

  63.     int         hasKeyframes;

  64.     int         hasBframes;

  65.     int         language;

  66.     int         trackID;

  67.     int         tag; ///< stsd fourcc

  68.     AVCodecContext *enc;

  69. 

  70.     int         vosLen;

  71.     uint8_t     *vosData;

  72.     MOVIentry   *cluster;

  73.     int         audio_vbr;

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

  75. } MOVTrack;

  76. 

  77. typedef struct MOVMuxContext {

  78.     int     mode;

  79.     int64_t time;

  80.     int     nb_streams;

  81.     int64_t mdat_pos;

  82.     uint64_t mdat_size;

  83.     long    timescale;

  84.     MOVTrack *tracks;

  85. } MOVMuxContext;

  86. 

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

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

  89. {

  90.     int64_t curpos = url_ftell(pb);

  91.     url_fseek(pb, pos, SEEK_SET);

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

  93.     url_fseek(pb, curpos, SEEK_SET);

  94. 

  95.     return curpos - pos;

  96. }

  97. 

  98. /* Chunk offset atom */

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

  100. {

  101.     int i;

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

  103.     int64_t pos = url_ftell(pb);

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

  105.     if (pos > UINT32_MAX) {

  106.         mode64 = 1;

  107.         put_tag(pb, "co64");

  108.     } else

  109.         put_tag(pb, "stco");

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

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

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

  113.         if(mode64 == 1)

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

  115.         else

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

  117.     }

  118.     return updateSize(pb, pos);

  119. }

  120. 

  121. /* Sample size atom */

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

  123. {

  124.     int equalChunks = 1;

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

  126. 

  127.     int64_t pos = url_ftell(pb);

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

  129.     put_tag(pb, "stsz");

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

  131. 

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

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

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

  135.             equalChunks = 0;

  136.         }

  137.         oldtst = tst;

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

  139.     }

  140.     if (equalChunks) {

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

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

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

  144.     }

  145.     else {

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

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

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

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

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

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

  152.             }

  153.         }

  154.     }

  155.     return updateSize(pb, pos);

  156. }

  157. 

  158. /* Sample to chunk atom */

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

  160. {

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

  162.     int64_t entryPos, curpos;

  163. 

  164.     int64_t pos = url_ftell(pb);

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

  166.     put_tag(pb, "stsc");

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

  168.     entryPos = url_ftell(pb);

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

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

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

  172.         {

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

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

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

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

  177.             index++;

  178.         }

  179.     }

  180.     curpos = url_ftell(pb);

  181.     url_fseek(pb, entryPos, SEEK_SET);

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

  183.     url_fseek(pb, curpos, SEEK_SET);

  184. 

  185.     return updateSize(pb, pos);

  186. }

  187. 

  188. /* Sync sample atom */

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

  190. {

  191.     int64_t curpos, entryPos;

  192.     int i, index = 0;

  193.     int64_t pos = url_ftell(pb);

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

  195.     put_tag(pb, "stss");

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

  197.     entryPos = url_ftell(pb);

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

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

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

  201.             put_be32(pb, i+1);

  202.             index++;

  203.         }

  204.     }

  205.     curpos = url_ftell(pb);

  206.     url_fseek(pb, entryPos, SEEK_SET);

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

  208.     url_fseek(pb, curpos, SEEK_SET);

  209.     return updateSize(pb, pos);

  210. }

  211. 

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

  213. {

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

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

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

  217.     put_tag(pb, "FFMP");

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

  219. 

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

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

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

  223.     return 0x11;

  224. }

  225. 

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

  227. {

  228.     GetBitContext gbc;

  229.     PutBitContext pbc;

  230.     uint8_t buf[3];

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

  232. 

  233.     if (track->vosLen < 7)

  234.         return -1;

  235. 

  236.     put_be32(pb, 11);

  237.     put_tag(pb, "dac3");

  238. 

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

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

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

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

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

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

  245.     if (acmod == 2) {

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

  247.     } else {

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

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

  250.         if (acmod & 4)

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

  252.     }

  253.     lfeon = get_bits1(&gbc);

  254. 

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

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

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

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

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

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

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

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

  263. 

  264.     flush_put_bits(&pbc);

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

  266. 

  267.     return 11;

  268. }

  269. 

  270. /**

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

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

  273.  */

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

  275. {

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

  277.     return track->enc->extradata_size;

  278. }

  279. 

  280. static int mov_write_enda_tag(ByteIOContext *pb)

  281. {

  282.     put_be32(pb, 10);

  283.     put_tag(pb, "enda");

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

  285.     return 10;

  286. }

  287. 

  288. static unsigned int descrLength(unsigned int len)

  289. {

  290.     int i;

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

  292.     return len + 1 + i;

  293. }

  294. 

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

  296. {

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

  298.     put_byte(pb, tag);

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

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

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

  302. }

  303. 

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

  305. {

  306.     int64_t pos = url_ftell(pb);

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

  308. 

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

  310.     put_tag(pb, "esds");

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

  312. 

  313.     // ES descriptor

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

  315.              descrLength(1));

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

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

  318. 

  319.     // DecoderConfig descriptor

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

  321. 

  322.     // Object type indication

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

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

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

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

  327.     else

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

  329. 

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

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

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

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

  334.     else

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

  336. 

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

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

  339. 

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

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

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

  343.     else

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

  345. 

  346.     if (track->vosLen) {

  347.         // DecoderSpecific info descriptor

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

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

  350.     }

  351. 

  352.     // SL descriptor

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

  354.     put_byte(pb, 0x02);

  355.     return updateSize(pb, pos);

  356. }

  357. 

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

  359. {

  360.     int64_t pos = url_ftell(pb);

  361. 

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

  363.     put_tag(pb, "wave");

  364. 

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

  366.     put_tag(pb, "frma");

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

  368. 

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

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

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

  372.         put_tag(pb, "mp4a");

  373.         put_be32(pb, 0);

  374.         mov_write_esds_tag(pb, track);

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

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

  377.         mov_write_enda_tag(pb);

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

  379.         mov_write_amr_tag(pb, track);

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

  381.         mov_write_ac3_tag(pb, track);

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

  383.         mov_write_extradata_tag(pb, track);

  384.     }

  385. 

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

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

  388. 

  389.     return updateSize(pb, pos);

  390. }

  391. 

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

  393. {

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

  395.     put_tag(pb, "glbl");

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

  397.     return 8+track->vosLen;

  398. }

  399. 

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

  401. {

  402.     int64_t pos = url_ftell(pb);

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

  404.         (track->audio_vbr ||

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

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

  407. 

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

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

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

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

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

  413. 

  414.     /* SoundDescription */

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

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

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

  418. 

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

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

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

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

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

  424.         else

  425.             put_be16(pb, 16);

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

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

  428.         put_be16(pb, 2);

  429.         put_be16(pb, 16);

  430.         put_be16(pb, 0);

  431.     }

  432. 

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

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

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

  436. 

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

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

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

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

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

  442.     }

  443. 

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

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

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

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

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

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

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

  451.         mov_write_wave_tag(pb, track);

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

  453.         mov_write_esds_tag(pb, track);

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

  455.         mov_write_amr_tag(pb, track);

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

  457.         mov_write_ac3_tag(pb, track);

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

  459.         mov_write_extradata_tag(pb, track);

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

  461.         mov_write_glbl_tag(pb, track);

  462. 

  463.     return updateSize(pb, pos);

  464. }

  465. 

  466. static int mov_write_d263_tag(ByteIOContext *pb)

  467. {

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

  469.     put_tag(pb, "d263");

  470.     put_tag(pb, "FFMP");

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

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

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

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

  475.     return 0xf;

  476. }

  477. 

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

  479. static int mov_write_svq3_tag(ByteIOContext *pb)

  480. {

  481.     put_be32(pb, 0x15);

  482.     put_tag(pb, "SMI ");

  483.     put_tag(pb, "SEQH");

  484.     put_be32(pb, 0x5);

  485.     put_be32(pb, 0xe2c0211d);

  486.     put_be32(pb, 0xc0000000);

  487.     put_byte(pb, 0);

  488.     return 0x15;

  489. }

  490. 

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

  492. {

  493.     int64_t pos = url_ftell(pb);

  494. 

  495.     put_be32(pb, 0);

  496.     put_tag(pb, "avcC");

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

  498.     return updateSize(pb, pos);

  499. }

  500. 

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

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

  503. {

  504.     int i;

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

  506.     put_tag(pb, "ACLR");

  507.     put_tag(pb, "ACLR");

  508.     put_tag(pb, "0001");

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

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

  511. 

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

  513.     put_tag(pb, "APRG");

  514.     put_tag(pb, "APRG");

  515.     put_tag(pb, "0001");

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

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

  518. 

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

  520.     put_tag(pb, "ARES");

  521.     put_tag(pb, "ARES");

  522.     put_tag(pb, "0001");

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

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

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

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

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

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

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

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

  531.     } else {

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

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

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

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

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

  537.         else

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

  539.     }

  540.     /* padding */

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

  542.         put_be64(pb, 0);

  543. 

  544.     /* extra padding for stsd needed */

  545.     put_be32(pb, 0);

  546.     return 0;

  547. }

  548. 

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

  550. {

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

  552. 

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

  554.         return 0;

  555. 

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

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

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

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

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

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

  562. 

  563.     return tag;

  564. }

  565. 

  566. static const AVCodecTag codec_ipod_tags[] = {

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

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

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

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

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

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

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

  574.     { CODEC_ID_NONE, 0 },

  575. };

  576. 

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

  578. {

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

  580. 

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

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

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

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

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

  586. 

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

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

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

  590. 

  591.     return tag;

  592. }

  593. 

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

  595. {

  596.     int tag;

  597. 

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

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

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

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

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

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

  604. 

  605.     return tag;

  606. }

  607. 

  608. static const struct {

  609.     enum PixelFormat pix_fmt;

  610.     uint32_t tag;

  611.     unsigned bps;

  612. } mov_pix_fmt_tags[] = {

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

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

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

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

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

  618. };

  619. 

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

  621. {

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

  623.     int i;

  624. 

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

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

  627.             tag = mov_pix_fmt_tags[i].tag;

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

  629.             break;

  630.         }

  631.     }

  632. 

  633.     return tag;

  634. }

  635. 

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

  637. {

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

  639. 

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

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

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

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

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

  645.             tag = mov_get_dv_codec_tag(s, track);

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

  647.             tag = mov_get_rawvideo_codec_tag(s, track);

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

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

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

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

  652.                 if (tag)

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

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

  655.             }

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

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

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

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

  660.                 if (ms_tag) {

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

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

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

  664.                 }

  665.             }

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

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

  668.     }

  669. 

  670.     return tag;

  671. }

  672. 

  673. static const AVCodecTag codec_3gp_tags[] = {

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

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

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

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

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

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

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

  681.     { CODEC_ID_NONE, 0 },

  682. };

  683. 

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

  685. {

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

  687. 

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

  689.         tag = mp4_get_codec_tag(s, track);

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

  691.         tag = ipod_get_codec_tag(s, track);

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

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

  694.     else

  695.         tag = mov_get_codec_tag(s, track);

  696. 

  697.     return tag;

  698. }

  699. 

  700. /** Write uuid atom.

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

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

  703.  */

  704. static int mov_write_uuid_tag_ipod(ByteIOContext *pb)

  705. {

  706.     put_be32(pb, 28);

  707.     put_tag(pb, "uuid");

  708.     put_be32(pb, 0x6b6840f2);

  709.     put_be32(pb, 0x5f244fc5);

  710.     put_be32(pb, 0xba39a51b);

  711.     put_be32(pb, 0xcf0323f3);

  712.     put_be32(pb, 0x0);

  713.     return 28;

  714. }

  715. 

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

  717. {

  718.     int64_t pos = url_ftell(pb);

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

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

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

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

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

  724. 

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

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

  727. 

  728.     return updateSize(pb, pos);

  729. }

  730. 

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

  732. {

  733.     int64_t pos = url_ftell(pb);

  734.     char compressor_name[32];

  735. 

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

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

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

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

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

  741. 

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

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

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

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

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

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

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

  749.         } else {

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

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

  752.         }

  753.     } else {

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

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

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

  757.     }

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

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

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

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

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

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

  764. 

  765.     memset(compressor_name,0,32);

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

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

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

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

  770.     put_buffer(pb, compressor_name, 31);

  771. 

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

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

  774.     else

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

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

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

  778.         mov_write_esds_tag(pb, track);

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

  780.         mov_write_d263_tag(pb);

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

  782.         mov_write_svq3_tag(pb);

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

  784.         mov_write_avid_tag(pb, track);

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

  786.         mov_write_avcc_tag(pb, track);

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

  788.             mov_write_uuid_tag_ipod(pb);

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

  790.         mov_write_glbl_tag(pb, track);

  791. 

  792.     return updateSize(pb, pos);

  793. }

  794. 

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

  796. {

  797.     int64_t pos = url_ftell(pb);

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

  799.     put_tag(pb, "stsd");

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

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

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

  803.         mov_write_video_tag(pb, track);

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

  805.         mov_write_audio_tag(pb, track);

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

  807.         mov_write_subtitle_tag(pb, track);

  808.     return updateSize(pb, pos);

  809. }

  810. 

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

  812. {

  813.     MOVStts *ctts_entries;

  814.     uint32_t entries = 0;

  815.     uint32_t atom_size;

  816.     int i;

  817. 

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

  819.     ctts_entries[0].count = 1;

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

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

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

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

  824.         } else {

  825.             entries++;

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

  827.             ctts_entries[entries].count = 1;

  828.         }

  829.     }

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

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

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

  833.     put_tag(pb, "ctts");

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

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

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

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

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

  839.     }

  840.     av_free(ctts_entries);

  841.     return atom_size;

  842. }

  843. 

  844. /* Time to sample atom */

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

  846. {

  847.     MOVStts *stts_entries;

  848.     uint32_t entries = -1;

  849.     uint32_t atom_size;

  850.     int i;

  851. 

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

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

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

  855.         stts_entries[0].duration = 1;

  856.         entries = 1;

  857.     } else {

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

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

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

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

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

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

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

  865.             } else {

  866.                 entries++;

  867.                 stts_entries[entries].duration = duration;

  868.                 stts_entries[entries].count = 1;

  869.             }

  870.         }

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

  872.     }

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

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

  875.     put_tag(pb, "stts");

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

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

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

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

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

  881.     }

  882.     av_free(stts_entries);

  883.     return atom_size;

  884. }

  885. 

  886. static int mov_write_dref_tag(ByteIOContext *pb)

  887. {

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

  889.     put_tag(pb, "dref");

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

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

  892. 

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

  894.     put_tag(pb, "url ");

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

  896. 

  897.     return 28;

  898. }

  899. 

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

  901. {

  902.     int64_t pos = url_ftell(pb);

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

  904.     put_tag(pb, "stbl");

  905.     mov_write_stsd_tag(pb, track);

  906.     mov_write_stts_tag(pb, track);

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

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

  909.         mov_write_stss_tag(pb, track);

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

  911.         track->hasBframes)

  912.         mov_write_ctts_tag(pb, track);

  913.     mov_write_stsc_tag(pb, track);

  914.     mov_write_stsz_tag(pb, track);

  915.     mov_write_stco_tag(pb, track);

  916.     return updateSize(pb, pos);

  917. }

  918. 

  919. static int mov_write_dinf_tag(ByteIOContext *pb)

  920. {

  921.     int64_t pos = url_ftell(pb);

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

  923.     put_tag(pb, "dinf");

  924.     mov_write_dref_tag(pb);

  925.     return updateSize(pb, pos);

  926. }

  927. 

  928. static int mov_write_nmhd_tag(ByteIOContext *pb)

  929. {

  930.     put_be32(pb, 12);

  931.     put_tag(pb, "nmhd");

  932.     put_be32(pb, 0);

  933.     return 12;

  934. }

  935. 

  936. static int mov_write_gmhd_tag(ByteIOContext *pb)

  937. {

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

  939.     put_tag(pb, "gmhd");

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

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

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

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

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

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

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

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

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

  949.     return 0x20;

  950. }

  951. 

  952. static int mov_write_smhd_tag(ByteIOContext *pb)

  953. {

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

  955.     put_tag(pb, "smhd");

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

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

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

  959.     return 16;

  960. }

  961. 

  962. static int mov_write_vmhd_tag(ByteIOContext *pb)

  963. {

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

  965.     put_tag(pb, "vmhd");

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

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

  968.     return 0x14;

  969. }

  970. 

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

  972. {

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

  974.     int64_t pos = url_ftell(pb);

  975. 

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

  977.         hdlr = "dhlr";

  978.         hdlr_type = "url ";

  979.         descr = "DataHandler";

  980.     } else {

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

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

  983.             hdlr_type = "vide";

  984.             descr = "VideoHandler";

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

  986.             hdlr_type = "soun";

  987.             descr = "SoundHandler";

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

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

  990.             else                                      hdlr_type = "text";

  991.             descr = "SubtitleHandler";

  992.         }

  993.     }

  994. 

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

  996.     put_tag(pb, "hdlr");

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

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

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

  1000.     put_be32(pb ,0); /* reserved */

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

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

  1003.     put_byte(pb, strlen(descr)); /* string counter */

  1004.     put_buffer(pb, descr, strlen(descr)); /* handler description */

  1005.     return updateSize(pb, pos);

  1006. }

  1007. 

  1008. static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack *track)

  1009. {

  1010.     int64_t pos = url_ftell(pb);

  1011.     put_be32(pb, 0); /* size */

  1012.     put_tag(pb, "minf");

  1013.     if(track->enc->codec_type == CODEC_TYPE_VIDEO)

  1014.         mov_write_vmhd_tag(pb);

  1015.     else if (track->enc->codec_type == CODEC_TYPE_AUDIO)

  1016.         mov_write_smhd_tag(pb);

  1017.     else if (track->enc->codec_type == CODEC_TYPE_SUBTITLE) {

  1018.         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);

  1019.         else                                      mov_write_nmhd_tag(pb);

  1020.     }

  1021.     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */

  1022.         mov_write_hdlr_tag(pb, NULL);

  1023.     mov_write_dinf_tag(pb);

  1024.     mov_write_stbl_tag(pb, track);

  1025.     return updateSize(pb, pos);

  1026. }

  1027. 

  1028. static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack *track)

  1029. {

  1030.     int version = track->trackDuration < INT32_MAX ? 0 : 1;

  1031. 

  1032.     (version == 1) ? put_be32(pb, 44) : put_be32(pb, 32); /* size */

  1033.     put_tag(pb, "mdhd");

  1034.     put_byte(pb, version);

  1035.     put_be24(pb, 0); /* flags */

  1036.     if (version == 1) {

  1037.         put_be64(pb, track->time);

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

  1039.     } else {

  1040.         put_be32(pb, track->time); /* creation time */

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

  1042.     }

  1043.     put_be32(pb, track->timescale); /* time scale (sample rate for audio) */

  1044.     (version == 1) ? put_be64(pb, track->trackDuration) : put_be32(pb, track->trackDuration); /* duration */

  1045.     put_be16(pb, track->language); /* language */

  1046.     put_be16(pb, 0); /* reserved (quality) */

  1047. 

  1048.     if(version!=0 && track->mode == MODE_MOV){

  1049.         av_log(NULL, AV_LOG_ERROR,

  1050.             "FATAL error, file duration too long for timebase, this file will not be\n"

  1051.             "playable with quicktime. Choose a different timebase or a different\n"

  1052.             "container format\n");

  1053.     }

  1054. 

  1055.     return 32;

  1056. }

  1057. 

  1058. static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack *track)

  1059. {

  1060.     int64_t pos = url_ftell(pb);

  1061.     put_be32(pb, 0); /* size */

  1062.     put_tag(pb, "mdia");

  1063.     mov_write_mdhd_tag(pb, track);

  1064.     mov_write_hdlr_tag(pb, track);

  1065.     mov_write_minf_tag(pb, track);

  1066.     return updateSize(pb, pos);

  1067. }

  1068. 

  1069. static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1070. {

  1071.     int64_t duration = av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP);

  1072.     int version = duration < INT32_MAX ? 0 : 1;

  1073. 

  1074.     (version == 1) ? put_be32(pb, 104) : put_be32(pb, 92); /* size */

  1075.     put_tag(pb, "tkhd");

  1076.     put_byte(pb, version);

  1077.     put_be24(pb, 0xf); /* flags (track enabled) */

  1078.     if (version == 1) {

  1079.         put_be64(pb, track->time);

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

  1081.     } else {

  1082.         put_be32(pb, track->time); /* creation time */

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

  1084.     }

  1085.     put_be32(pb, track->trackID); /* track-id */

  1086.     put_be32(pb, 0); /* reserved */

  1087.     (version == 1) ? put_be64(pb, duration) : put_be32(pb, duration);

  1088. 

  1089.     put_be32(pb, 0); /* reserved */

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

  1091.     put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */

  1092.     /* Volume, only for audio */

  1093.     if(track->enc->codec_type == CODEC_TYPE_AUDIO)

  1094.         put_be16(pb, 0x0100);

  1095.     else

  1096.         put_be16(pb, 0);

  1097.     put_be16(pb, 0); /* reserved */

  1098. 

  1099.     /* Matrix structure */

  1100.     put_be32(pb, 0x00010000); /* reserved */

  1101.     put_be32(pb, 0x0); /* reserved */

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

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

  1104.     put_be32(pb, 0x00010000); /* reserved */

  1105.     put_be32(pb, 0x0); /* reserved */

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

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

  1108.     put_be32(pb, 0x40000000); /* reserved */

  1109. 

  1110.     /* Track width and height, for visual only */

  1111.     if(track->enc->codec_type == CODEC_TYPE_VIDEO ||

  1112.        track->enc->codec_type == CODEC_TYPE_SUBTITLE) {

  1113.         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);

  1114.         if(!sample_aspect_ratio || track->height != track->enc->height)

  1115.             sample_aspect_ratio = 1;

  1116.         put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);

  1117.         put_be32(pb, track->height*0x10000);

  1118.     }

  1119.     else {

  1120.         put_be32(pb, 0);

  1121.         put_be32(pb, 0);

  1122.     }

  1123.     return 0x5c;

  1124. }

  1125. 

  1126. // This box seems important for the psp playback ... without it the movie seems to hang

  1127. static int mov_write_edts_tag(ByteIOContext *pb, MOVTrack *track)

  1128. {

  1129.     put_be32(pb, 0x24); /* size  */

  1130.     put_tag(pb, "edts");

  1131.     put_be32(pb, 0x1c); /* size  */

  1132.     put_tag(pb, "elst");

  1133.     put_be32(pb, 0x0);

  1134.     put_be32(pb, 0x1);

  1135. 

  1136.     put_be32(pb, av_rescale_rnd(track->trackDuration, globalTimescale, track->timescale, AV_ROUND_UP)); /* duration   ... doesn't seem to effect psp */

  1137. 

  1138.     put_be32(pb, track->cluster[0].cts); /* first pts is cts since dts is 0 */

  1139.     put_be32(pb, 0x00010000);

  1140.     return 0x24;

  1141. }

  1142. 

  1143. // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)

  1144. static int mov_write_uuid_tag_psp(ByteIOContext *pb, MOVTrack *mov)

  1145. {

  1146.     put_be32(pb, 0x34); /* size ... reports as 28 in mp4box! */

  1147.     put_tag(pb, "uuid");

  1148.     put_tag(pb, "USMT");

  1149.     put_be32(pb, 0x21d24fce);

  1150.     put_be32(pb, 0xbb88695c);

  1151.     put_be32(pb, 0xfac9c740);

  1152.     put_be32(pb, 0x1c);     // another size here!

  1153.     put_tag(pb, "MTDT");

  1154.     put_be32(pb, 0x00010012);

  1155.     put_be32(pb, 0x0a);

  1156.     put_be32(pb, 0x55c40000);

  1157.     put_be32(pb, 0x1);

  1158.     put_be32(pb, 0x0);

  1159.     return 0x34;

  1160. }

  1161. 

  1162. static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack *track, AVStream *st)

  1163. {

  1164.     int64_t pos = url_ftell(pb);

  1165.     put_be32(pb, 0); /* size */

  1166.     put_tag(pb, "trak");

  1167.     mov_write_tkhd_tag(pb, track, st);

  1168.     if (track->mode == MODE_PSP || track->hasBframes)

  1169.         mov_write_edts_tag(pb, track);  // PSP Movies require edts box

  1170.     mov_write_mdia_tag(pb, track);

  1171.     if (track->mode == MODE_PSP)

  1172.         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box

  1173.     return updateSize(pb, pos);

  1174. }

  1175. 

  1176. #if 0

  1177. /* TODO: Not sorted out, but not necessary either */

  1178. static int mov_write_iods_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1179. {

  1180.     put_be32(pb, 0x15); /* size */

  1181.     put_tag(pb, "iods");

  1182.     put_be32(pb, 0);    /* version & flags */

  1183.     put_be16(pb, 0x1007);

  1184.     put_byte(pb, 0);

  1185.     put_be16(pb, 0x4fff);

  1186.     put_be16(pb, 0xfffe);

  1187.     put_be16(pb, 0x01ff);

  1188.     return 0x15;

  1189. }

  1190. #endif

  1191. 

  1192. static int mov_write_mvhd_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1193. {

  1194.     int maxTrackID = 1, i;

  1195.     int64_t maxTrackLenTemp, maxTrackLen = 0;

  1196.     int version;

  1197. 

  1198.     for (i=0; i<mov->nb_streams; i++) {

  1199.         if(mov->tracks[i].entry > 0) {

  1200.             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration, globalTimescale, mov->tracks[i].timescale, AV_ROUND_UP);

  1201.             if(maxTrackLen < maxTrackLenTemp)

  1202.                 maxTrackLen = maxTrackLenTemp;

  1203.             if(maxTrackID < mov->tracks[i].trackID)

  1204.                 maxTrackID = mov->tracks[i].trackID;

  1205.         }

  1206.     }

  1207. 

  1208.     version = maxTrackLen < UINT32_MAX ? 0 : 1;

  1209.     (version == 1) ? put_be32(pb, 120) : put_be32(pb, 108); /* size */

  1210.     put_tag(pb, "mvhd");

  1211.     put_byte(pb, version);

  1212.     put_be24(pb, 0); /* flags */

  1213.     if (version == 1) {

  1214.         put_be64(pb, mov->time);

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

  1216.     } else {

  1217.         put_be32(pb, mov->time); /* creation time */

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

  1219.     }

  1220.     put_be32(pb, mov->timescale); /* timescale */

  1221.     (version == 1) ? put_be64(pb, maxTrackLen) : put_be32(pb, maxTrackLen); /* duration of longest track */

  1222. 

  1223.     put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */

  1224.     put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */

  1225.     put_be16(pb, 0); /* reserved */

  1226.     put_be32(pb, 0); /* reserved */

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

  1228. 

  1229.     /* Matrix structure */

  1230.     put_be32(pb, 0x00010000); /* reserved */

  1231.     put_be32(pb, 0x0); /* reserved */

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

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

  1234.     put_be32(pb, 0x00010000); /* reserved */

  1235.     put_be32(pb, 0x0); /* reserved */

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

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

  1238.     put_be32(pb, 0x40000000); /* reserved */

  1239. 

  1240.     put_be32(pb, 0); /* reserved (preview time) */

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

  1242.     put_be32(pb, 0); /* reserved (poster time) */

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

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

  1245.     put_be32(pb, 0); /* reserved (current time) */

  1246.     put_be32(pb, maxTrackID+1); /* Next track id */

  1247.     return 0x6c;

  1248. }

  1249. 

  1250. static int mov_write_itunes_hdlr_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1251.                                      AVFormatContext *s)

  1252. {

  1253.     int64_t pos = url_ftell(pb);

  1254.     put_be32(pb, 0); /* size */

  1255.     put_tag(pb, "hdlr");

  1256.     put_be32(pb, 0);

  1257.     put_be32(pb, 0);

  1258.     put_tag(pb, "mdir");

  1259.     put_tag(pb, "appl");

  1260.     put_be32(pb, 0);

  1261.     put_be32(pb, 0);

  1262.     put_be16(pb, 0);

  1263.     return updateSize(pb, pos);

  1264. }

  1265. 

  1266. /* helper function to write a data tag with the specified string as data */

  1267. static int mov_write_string_data_tag(ByteIOContext *pb, const char *data, int lang, int long_style)

  1268. {

  1269.     if(long_style){

  1270.         int64_t pos = url_ftell(pb);

  1271.         put_be32(pb, 0); /* size */

  1272.         put_tag(pb, "data");

  1273.         put_be32(pb, 1);

  1274.         put_be32(pb, 0);

  1275.         put_buffer(pb, data, strlen(data));

  1276.         return updateSize(pb, pos);

  1277.     }else{

  1278.         put_be16(pb, strlen(data)); /* string length */

  1279.         put_be16(pb, lang);

  1280.         put_buffer(pb, data, strlen(data));

  1281.         return strlen(data) + 4;

  1282.     }

  1283. }

  1284. 

  1285. static int mov_write_string_tag(ByteIOContext *pb, const char *name, const char *value, int lang, int long_style){

  1286.     int size = 0;

  1287.     if (value && value[0]) {

  1288.         int64_t pos = url_ftell(pb);

  1289.         put_be32(pb, 0); /* size */

  1290.         put_tag(pb, name);

  1291.         mov_write_string_data_tag(pb, value, lang, long_style);

  1292.         size= updateSize(pb, pos);

  1293.     }

  1294.     return size;

  1295. }

  1296. 

  1297. static int mov_write_string_metadata(AVFormatContext *s, ByteIOContext *pb,

  1298.                                      const char *name, const char *tag,

  1299.                                      int long_style)

  1300. {

  1301.     int l, lang = 0, len, len2;

  1302.     AVMetadataTag *t, *t2 = NULL;

  1303.     char tag2[16];

  1304. 

  1305.     if (!(t = av_metadata_get(s->metadata, tag, NULL, 0)))

  1306.         return 0;

  1307. 

  1308.     len = strlen(t->key);

  1309.     snprintf(tag2, sizeof(tag2), "%s-", tag);

  1310.     while ((t2 = av_metadata_get(s->metadata, tag2, t2, AV_METADATA_IGNORE_SUFFIX))) {

  1311.         len2 = strlen(t2->key);

  1312.         if (len2 == len+4 && !strcmp(t->value, t2->value)

  1313.             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 0)) >= 0) {

  1314.             lang = l;

  1315.             break;

  1316.         }

  1317.     }

  1318.     return mov_write_string_tag(pb, name, t->value, lang, long_style);

  1319. }

  1320. 

  1321. /* iTunes track number */

  1322. static int mov_write_trkn_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1323.                               AVFormatContext *s)

  1324. {

  1325.     AVMetadataTag *t = av_metadata_get(s->metadata, "track", NULL, 0);

  1326.     int size = 0, track = t ? atoi(t->value) : 0;

  1327.     if (track) {

  1328.         int64_t pos = url_ftell(pb);

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

  1330.         put_tag(pb, "trkn");

  1331.         {

  1332.             int64_t pos = url_ftell(pb);

  1333.             put_be32(pb, 0); /* size */

  1334.             put_tag(pb, "data");

  1335.             put_be32(pb, 0);        // 8 bytes empty

  1336.             put_be32(pb, 0);

  1337.             put_be16(pb, 0);        // empty

  1338.             put_be16(pb, track);    // track number

  1339.             put_be16(pb, 0);        // total track number

  1340.             put_be16(pb, 0);        // empty

  1341.             updateSize(pb, pos);

  1342.         }

  1343.         size = updateSize(pb, pos);

  1344.     }

  1345.     return size;

  1346. }

  1347. 

  1348. /* iTunes meta data list */

  1349. static int mov_write_ilst_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1350.                               AVFormatContext *s)

  1351. {

  1352.     int64_t pos = url_ftell(pb);

  1353.     put_be32(pb, 0); /* size */

  1354.     put_tag(pb, "ilst");

  1355.     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);

  1356.     mov_write_string_metadata(s, pb, "\251ART", "author"   , 1);

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

  1358.     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);

  1359.     mov_write_string_metadata(s, pb, "\251day", "year"     , 1);

  1360.     mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);

  1361.     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);

  1362.     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);

  1363.     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);

  1364.     mov_write_trkn_tag(pb, mov, s);

  1365.     return updateSize(pb, pos);

  1366. }

  1367. 

  1368. /* iTunes meta data tag */

  1369. static int mov_write_meta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1370.                               AVFormatContext *s)

  1371. {

  1372.     int size = 0;

  1373.     int64_t pos = url_ftell(pb);

  1374.     put_be32(pb, 0); /* size */

  1375.     put_tag(pb, "meta");

  1376.     put_be32(pb, 0);

  1377.     mov_write_itunes_hdlr_tag(pb, mov, s);

  1378.     mov_write_ilst_tag(pb, mov, s);

  1379.     size = updateSize(pb, pos);

  1380.     return size;

  1381. }

  1382. 

  1383. static int utf8len(const uint8_t *b)

  1384. {

  1385.     int len=0;

  1386.     int val;

  1387.     while(*b){

  1388.         GET_UTF8(val, *b++, return -1;)

  1389.         len++;

  1390.     }

  1391.     return len;

  1392. }

  1393. 

  1394. static int ascii_to_wc(ByteIOContext *pb, const uint8_t *b)

  1395. {

  1396.     int val;

  1397.     while(*b){

  1398.         GET_UTF8(val, *b++, return -1;)

  1399.         put_be16(pb, val);

  1400.     }

  1401.     put_be16(pb, 0x00);

  1402.     return 0;

  1403. }

  1404. 

  1405. static uint16_t language_code(const char *str)

  1406. {

  1407.     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);

  1408. }

  1409. 

  1410. static int mov_write_3gp_udta_tag(ByteIOContext *pb, AVFormatContext *s,

  1411.                                   const char *tag, const char *str)

  1412. {

  1413.     int64_t pos = url_ftell(pb);

  1414.     AVMetadataTag *t = av_metadata_get(s->metadata, str, NULL, 0);

  1415.     if (!t || !utf8len(t->value))

  1416.         return 0;

  1417.     put_be32(pb, 0);   /* size */

  1418.     put_tag (pb, tag); /* type */

  1419.     put_be32(pb, 0);   /* version + flags */

  1420.     if (!strcmp(tag, "yrrc"))

  1421.         put_be16(pb, atoi(t->value));

  1422.     else {

  1423.         put_be16(pb, language_code("eng")); /* language */

  1424.         ascii_to_wc(pb, t->value);

  1425.         if (!strcmp(tag, "albm") &&

  1426.             (t = av_metadata_get(s->metadata, "year", NULL, 0)))

  1427.             put_byte(pb, atoi(t->value));

  1428.     }

  1429.     return updateSize(pb, pos);

  1430. }

  1431. 

  1432. static int mov_write_udta_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1433.                               AVFormatContext *s)

  1434. {

  1435.     ByteIOContext *pb_buf;

  1436.     int i, ret, size;

  1437.     uint8_t *buf;

  1438. 

  1439.     for (i = 0; i < s->nb_streams; i++)

  1440.         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {

  1441.             return 0;

  1442.         }

  1443. 

  1444.     ret = url_open_dyn_buf(&pb_buf);

  1445.     if(ret < 0)

  1446.         return ret;

  1447. 

  1448.         if (mov->mode & MODE_3GP) {

  1449.             mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");

  1450.             mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");

  1451.             mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");

  1452.             mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");

  1453.             mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");

  1454.             mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");

  1455.             mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "year");

  1456.         } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4

  1457.             mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);

  1458.             mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);

  1459.             mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);

  1460.             mov_write_string_metadata(s, pb_buf, "\251day", "year"       , 0);

  1461.             mov_write_string_tag(pb_buf, "\251enc", LIBAVFORMAT_IDENT, 0, 0);

  1462.             mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);

  1463.             mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);

  1464.             mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);

  1465.         } else {

  1466.             /* iTunes meta data */

  1467.             mov_write_meta_tag(pb_buf, mov, s);

  1468.         }

  1469. 

  1470.     if ((size = url_close_dyn_buf(pb_buf, &buf)) > 0) {

  1471.         put_be32(pb, size+8);

  1472.         put_tag(pb, "udta");

  1473.         put_buffer(pb, buf, size);

  1474.         av_free(buf);

  1475.     }

  1476. 

  1477.     return 0;

  1478. }

  1479. 

  1480. static void mov_write_psp_udta_tag(ByteIOContext *pb,

  1481.                                   const char *str, const char *lang, int type)

  1482. {

  1483.     int len = utf8len(str)+1;

  1484.     if(len<=0)

  1485.         return;

  1486.     put_be16(pb, len*2+10);            /* size */

  1487.     put_be32(pb, type);                /* type */

  1488.     put_be16(pb, language_code(lang)); /* language */

  1489.     put_be16(pb, 0x01);                /* ? */

  1490.     ascii_to_wc(pb, str);

  1491. }

  1492. 

  1493. static int mov_write_uuidusmt_tag(ByteIOContext *pb, AVFormatContext *s)

  1494. {

  1495.     AVMetadataTag *title = av_metadata_get(s->metadata, "title", NULL, 0);

  1496.     int64_t pos, pos2;

  1497. 

  1498.     if (title) {

  1499.         pos = url_ftell(pb);

  1500.         put_be32(pb, 0); /* size placeholder*/

  1501.         put_tag(pb, "uuid");

  1502.         put_tag(pb, "USMT");

  1503.         put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1504.         put_be32(pb, 0xbb88695c);

  1505.         put_be32(pb, 0xfac9c740);

  1506. 

  1507.         pos2 = url_ftell(pb);

  1508.         put_be32(pb, 0); /* size placeholder*/

  1509.         put_tag(pb, "MTDT");

  1510.         put_be16(pb, 4);

  1511. 

  1512.         // ?

  1513.         put_be16(pb, 0x0C);                 /* size */

  1514.         put_be32(pb, 0x0B);                 /* type */

  1515.         put_be16(pb, language_code("und")); /* language */

  1516.         put_be16(pb, 0x0);                  /* ? */

  1517.         put_be16(pb, 0x021C);               /* data */

  1518. 

  1519.         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);

  1520.         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);

  1521. //        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);

  1522.         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);

  1523. 

  1524.         updateSize(pb, pos2);

  1525.         return updateSize(pb, pos);

  1526.     }

  1527. 

  1528.     return 0;

  1529. }

  1530. 

  1531. static int mov_write_moov_tag(ByteIOContext *pb, MOVMuxContext *mov,

  1532.                               AVFormatContext *s)

  1533. {

  1534.     int i;

  1535.     int64_t pos = url_ftell(pb);

  1536.     put_be32(pb, 0); /* size placeholder*/

  1537.     put_tag(pb, "moov");

  1538.     mov->timescale = globalTimescale;

  1539. 

  1540.     for (i=0; i<mov->nb_streams; i++) {

  1541.         if(mov->tracks[i].entry <= 0) continue;

  1542. 

  1543.         mov->tracks[i].time = mov->time;

  1544.         mov->tracks[i].trackID = i+1;

  1545.     }

  1546. 

  1547.     mov_write_mvhd_tag(pb, mov);

  1548.     //mov_write_iods_tag(pb, mov);

  1549.     for (i=0; i<mov->nb_streams; i++) {

  1550.         if(mov->tracks[i].entry > 0) {

  1551.             mov_write_trak_tag(pb, &(mov->tracks[i]), s->streams[i]);

  1552.         }

  1553.     }

  1554. 

  1555.     if (mov->mode == MODE_PSP)

  1556.         mov_write_uuidusmt_tag(pb, s);

  1557.     else

  1558.         mov_write_udta_tag(pb, mov, s);

  1559. 

  1560.     return updateSize(pb, pos);

  1561. }

  1562. 

  1563. static int mov_write_mdat_tag(ByteIOContext *pb, MOVMuxContext *mov)

  1564. {

  1565.     put_be32(pb, 8);    // placeholder for extended size field (64 bit)

  1566.     put_tag(pb, mov->mode == MODE_MOV ? "wide" : "free");

  1567. 

  1568.     mov->mdat_pos = url_ftell(pb);

  1569.     put_be32(pb, 0); /* size placeholder*/

  1570.     put_tag(pb, "mdat");

  1571.     return 0;

  1572. }

  1573. 

  1574. /* TODO: This needs to be more general */

  1575. static int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)

  1576. {

  1577.     MOVMuxContext *mov = s->priv_data;

  1578.     int64_t pos = url_ftell(pb);

  1579.     int has_h264 = 0, has_video = 0;

  1580.     int minor = 0x200;

  1581.     int i;

  1582. 

  1583.     for (i = 0; i < s->nb_streams; i++) {

  1584.         AVStream *st = s->streams[i];

  1585.         if (st->codec->codec_type == CODEC_TYPE_VIDEO)

  1586.             has_video = 1;

  1587.         if (st->codec->codec_id == CODEC_ID_H264)

  1588.             has_h264 = 1;

  1589.     }

  1590. 

  1591.     put_be32(pb, 0); /* size */

  1592.     put_tag(pb, "ftyp");

  1593. 

  1594.     if (mov->mode == MODE_3GP) {

  1595.         put_tag(pb, has_h264 ? "3gp6"  : "3gp4");

  1596.         minor =     has_h264 ?   0x100 :   0x200;

  1597.     } else if (mov->mode & MODE_3G2) {

  1598.         put_tag(pb, has_h264 ? "3g2b"  : "3g2a");

  1599.         minor =     has_h264 ? 0x20000 : 0x10000;

  1600.     }else if (mov->mode == MODE_PSP)

  1601.         put_tag(pb, "MSNV");

  1602.     else if (mov->mode == MODE_MP4)

  1603.         put_tag(pb, "isom");

  1604.     else if (mov->mode == MODE_IPOD)

  1605.         put_tag(pb, has_video ? "M4V ":"M4A ");

  1606.     else

  1607.         put_tag(pb, "qt  ");

  1608. 

  1609.     put_be32(pb, minor);

  1610. 

  1611.     if(mov->mode == MODE_MOV)

  1612.         put_tag(pb, "qt  ");

  1613.     else{

  1614.         put_tag(pb, "isom");

  1615.         put_tag(pb, "iso2");

  1616.         if(has_h264)

  1617.             put_tag(pb, "avc1");

  1618.     }

  1619. 

  1620.     if (mov->mode == MODE_3GP)

  1621.         put_tag(pb, has_h264 ? "3gp6":"3gp4");

  1622.     else if (mov->mode & MODE_3G2)

  1623.         put_tag(pb, has_h264 ? "3g2b":"3g2a");

  1624.     else if (mov->mode == MODE_PSP)

  1625.         put_tag(pb, "MSNV");

  1626.     else if (mov->mode == MODE_MP4)

  1627.         put_tag(pb, "mp41");

  1628.     return updateSize(pb, pos);

  1629. }

  1630. 

  1631. static void mov_write_uuidprof_tag(ByteIOContext *pb, AVFormatContext *s)

  1632. {

  1633.     AVCodecContext *VideoCodec = s->streams[0]->codec;

  1634.     AVCodecContext *AudioCodec = s->streams[1]->codec;

  1635.     int AudioRate = AudioCodec->sample_rate;

  1636.     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);

  1637.     int audio_kbitrate= AudioCodec->bit_rate / 1000;

  1638.     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);

  1639. 

  1640.     put_be32(pb, 0x94); /* size */

  1641.     put_tag(pb, "uuid");

  1642.     put_tag(pb, "PROF");

  1643. 

  1644.     put_be32(pb, 0x21d24fce); /* 96 bit UUID */

  1645.     put_be32(pb, 0xbb88695c);

  1646.     put_be32(pb, 0xfac9c740);

  1647. 

  1648.     put_be32(pb, 0x0);  /* ? */

  1649.     put_be32(pb, 0x3);  /* 3 sections ? */

  1650. 

  1651.     put_be32(pb, 0x14); /* size */

  1652.     put_tag(pb, "FPRF");

  1653.     put_be32(pb, 0x0);  /* ? */

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

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

  1656. 

  1657.     put_be32(pb, 0x2c);  /* size */

  1658.     put_tag(pb, "APRF");   /* audio */

  1659.     put_be32(pb, 0x0);

  1660.     put_be32(pb, 0x2);   /* TrackID */

  1661.     put_tag(pb, "mp4a");

  1662.     put_be32(pb, 0x20f);

  1663.     put_be32(pb, 0x0);

  1664.     put_be32(pb, audio_kbitrate);

  1665.     put_be32(pb, audio_kbitrate);

  1666.     put_be32(pb, AudioRate);

  1667.     put_be32(pb, AudioCodec->channels);

  1668. 

  1669.     put_be32(pb, 0x34);  /* size */

  1670.     put_tag(pb, "VPRF");   /* video */

  1671.     put_be32(pb, 0x0);

  1672.     put_be32(pb, 0x1);    /* TrackID */

  1673.     if (VideoCodec->codec_id == CODEC_ID_H264) {

  1674.         put_tag(pb, "avc1");

  1675.         put_be16(pb, 0x014D);

  1676.         put_be16(pb, 0x0015);

  1677.     } else {

  1678.         put_tag(pb, "mp4v");

  1679.         put_be16(pb, 0x0000);

  1680.         put_be16(pb, 0x0103);

  1681.     }

  1682.     put_be32(pb, 0x0);

  1683.     put_be32(pb, video_kbitrate);

  1684.     put_be32(pb, video_kbitrate);

  1685.     put_be32(pb, FrameRate);

  1686.     put_be32(pb, FrameRate);

  1687.     put_be16(pb, VideoCodec->width);

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

  1689.     put_be32(pb, 0x010001); /* ? */

  1690. }

  1691. 

  1692. static int mov_write_header(AVFormatContext *s)

  1693. {

  1694.     ByteIOContext *pb = s->pb;

  1695.     MOVMuxContext *mov = s->priv_data;

  1696.     int i;

  1697. 

  1698.     if (url_is_streamed(s->pb)) {

  1699.         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");

  1700.         return -1;

  1701.     }

  1702. 

  1703.     /* Default mode == MP4 */

  1704.     mov->mode = MODE_MP4;

  1705. 

  1706.     if (s->oformat != NULL) {

  1707.         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;

  1708.         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;

  1709.         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;

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

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

  1712. 

  1713.         mov_write_ftyp_tag(pb,s);

  1714.         if (mov->mode == MODE_PSP) {

  1715.             if (s->nb_streams != 2) {

  1716.                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");

  1717.                 return -1;

  1718.             }

  1719.             mov_write_uuidprof_tag(pb,s);

  1720.         }

  1721.     }

  1722. 

  1723.     mov->tracks = av_mallocz(s->nb_streams*sizeof(*mov->tracks));

  1724.     if (!mov->tracks)

  1725.         return AVERROR(ENOMEM);

  1726. 

  1727.     for(i=0; i<s->nb_streams; i++){

  1728.         AVStream *st= s->streams[i];

  1729.         MOVTrack *track= &mov->tracks[i];

  1730.         AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL,0);

  1731. 

  1732.         track->enc = st->codec;

  1733.         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);

  1734.         if (track->language < 0)

  1735.             track->language = 0;

  1736.         track->mode = mov->mode;

  1737.         track->tag = mov_find_codec_tag(s, track);

  1738.         if (!track->tag) {

  1739.             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "

  1740.                    "codec not currently supported in container\n", i);

  1741.             goto error;

  1742.         }

  1743.         if(st->codec->codec_type == CODEC_TYPE_VIDEO){

  1744.             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||

  1745.                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||

  1746.                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {

  1747.                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {

  1748.                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");

  1749.                     goto error;

  1750.                 }

  1751.                 track->height = track->tag>>24 == 'n' ? 486 : 576;

  1752.             }

  1753.             track->timescale = st->codec->time_base.den;

  1754.             av_set_pts_info(st, 64, 1, st->codec->time_base.den);

  1755.             if (track->mode == MODE_MOV && track->timescale > 100000)

  1756.                 av_log(s, AV_LOG_WARNING,

  1757.                        "WARNING codec timebase is very high. If duration is too long,\n"

  1758.                        "file may not be playable by quicktime. Specify a shorter timebase\n"

  1759.                        "or choose different container.\n");

  1760.         }else if(st->codec->codec_type == CODEC_TYPE_AUDIO){

  1761.             track->timescale = st->codec->sample_rate;

  1762.             av_set_pts_info(st, 64, 1, st->codec->sample_rate);

  1763.             if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {

  1764.                 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);

  1765.                 goto error;

  1766.             }else if(st->codec->frame_size > 1){ /* assume compressed audio */

  1767.                 track->audio_vbr = 1;

  1768.             }else{

  1769.                 st->codec->frame_size = 1;

  1770.                 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;

  1771.             }

  1772.             if(track->mode != MODE_MOV &&

  1773.                track->enc->codec_id == CODEC_ID_MP3 && track->enc->sample_rate < 16000){

  1774.                 av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",

  1775.                        i, track->enc->sample_rate);

  1776.                 goto error;

  1777.             }

  1778.         }else if(st->codec->codec_type == CODEC_TYPE_SUBTITLE){

  1779.             track->timescale = st->codec->time_base.den;

  1780.             av_set_pts_info(st, 64, 1, st->codec->time_base.den);

  1781.         }

  1782.         if (!track->height)

  1783.             track->height = st->codec->height;

  1784.     }

  1785. 

  1786.     mov_write_mdat_tag(pb, mov);

  1787.     mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based

  1788.     mov->nb_streams = s->nb_streams;

  1789. 

  1790.     put_flush_packet(pb);

  1791. 

  1792.     return 0;

  1793.  error:

  1794.     av_freep(&mov->tracks);

  1795.     return -1;

  1796. }

  1797. 

  1798. static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)

  1799. {

  1800.     MOVMuxContext *mov = s->priv_data;

  1801.     ByteIOContext *pb = s->pb;

  1802.     MOVTrack *trk = &mov->tracks[pkt->stream_index];

  1803.     AVCodecContext *enc = trk->enc;

  1804.     unsigned int samplesInChunk = 0;

  1805.     int size= pkt->size;

  1806. 

  1807.     if (url_is_streamed(s->pb)) return 0; /* Can't handle that */

  1808.     if (!size) return 0; /* Discard 0 sized packets */

  1809. 

  1810.     if (enc->codec_id == CODEC_ID_AMR_NB) {

  1811.         /* We must find out how many AMR blocks there are in one packet */

  1812.         static uint16_t packed_size[16] =

  1813.             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};

  1814.         int len = 0;

  1815. 

  1816.         while (len < size && samplesInChunk < 100) {

  1817.             len += packed_size[(pkt->data[len] >> 3) & 0x0F];

  1818.             samplesInChunk++;

  1819.         }

  1820.         if(samplesInChunk > 1){

  1821.             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");

  1822.             return -1;

  1823.         }

  1824.     } else if (trk->sampleSize)

  1825.         samplesInChunk = size/trk->sampleSize;

  1826.     else

  1827.         samplesInChunk = 1;

  1828. 

  1829.     /* copy extradata if it exists */

  1830.     if (trk->vosLen == 0 && enc->extradata_size > 0) {

  1831.         trk->vosLen = enc->extradata_size;

  1832.         trk->vosData = av_malloc(trk->vosLen);

  1833.         memcpy(trk->vosData, enc->extradata, trk->vosLen);

  1834.     }

  1835. 

  1836.     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {

  1837.         /* from x264 or from bytestream h264 */

  1838.         /* nal reformating needed */

  1839.         size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);

  1840.     } else {

  1841.         put_buffer(pb, pkt->data, size);

  1842.     }

  1843. 

  1844.     if ((enc->codec_id == CODEC_ID_DNXHD ||

  1845.                 enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {

  1846.         /* copy frame to create needed atoms */

  1847.         trk->vosLen = size;

  1848.         trk->vosData = av_malloc(size);

  1849.         if (!trk->vosData)

  1850.             return AVERROR(ENOMEM);

  1851.         memcpy(trk->vosData, pkt->data, size);

  1852.     }

  1853. 

  1854.     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {

  1855.         trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));

  1856.         if (!trk->cluster)

  1857.             return -1;

  1858.     }

  1859. 

  1860.     trk->cluster[trk->entry].pos = url_ftell(pb) - size;

  1861.     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;

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

  1863.     trk->cluster[trk->entry].entries = samplesInChunk;

  1864.     trk->cluster[trk->entry].dts = pkt->dts;

  1865.     trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;

  1866. 

  1867.     if (pkt->pts == AV_NOPTS_VALUE) {

  1868.         av_log(s, AV_LOG_WARNING, "pts has no value\n");

  1869.         pkt->pts = pkt->dts;

  1870.     }

  1871.     if (pkt->dts != pkt->pts)

  1872.         trk->hasBframes = 1;

  1873.     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;

  1874.     trk->cluster[trk->entry].key_frame = !!(pkt->flags & PKT_FLAG_KEY);

  1875.     if(trk->cluster[trk->entry].key_frame)

  1876.         trk->hasKeyframes++;

  1877.     trk->entry++;

  1878.     trk->sampleCount += samplesInChunk;

  1879.     mov->mdat_size += size;

  1880. 

  1881.     put_flush_packet(pb);

  1882.     return 0;

  1883. }

  1884. 

  1885. static int mov_write_trailer(AVFormatContext *s)

  1886. {

  1887.     MOVMuxContext *mov = s->priv_data;

  1888.     ByteIOContext *pb = s->pb;

  1889.     int res = 0;

  1890.     int i;

  1891. 

  1892.     int64_t moov_pos = url_ftell(pb);

  1893. 

  1894.     /* Write size of mdat tag */

  1895.     if (mov->mdat_size+8 <= UINT32_MAX) {

  1896.         url_fseek(pb, mov->mdat_pos, SEEK_SET);

  1897.         put_be32(pb, mov->mdat_size+8);

  1898.     } else {

  1899.         /* overwrite 'wide' placeholder atom */

  1900.         url_fseek(pb, mov->mdat_pos - 8, SEEK_SET);

  1901.         put_be32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */

  1902.         put_tag(pb, "mdat");

  1903.         put_be64(pb, mov->mdat_size+16);

  1904.     }

  1905.     url_fseek(pb, moov_pos, SEEK_SET);

  1906. 

  1907.     mov_write_moov_tag(pb, mov, s);

  1908. 

  1909.     for (i=0; i<mov->nb_streams; i++) {

  1910.         av_freep(&mov->tracks[i].cluster);

  1911. 

  1912.         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);

  1913. 

  1914.     }

  1915. 

  1916.     put_flush_packet(pb);

  1917. 

  1918.     av_freep(&mov->tracks);

  1919. 

  1920.     return res;

  1921. }

  1922. 

  1923. #if CONFIG_MOV_MUXER

  1924. AVOutputFormat mov_muxer = {

  1925.     "mov",

  1926.     NULL_IF_CONFIG_SMALL("MOV format"),

  1927.     NULL,

  1928.     "mov",

  1929.     sizeof(MOVMuxContext),

  1930.     CODEC_ID_AAC,

  1931.     CODEC_ID_MPEG4,

  1932.     mov_write_header,

  1933.     mov_write_packet,

  1934.     mov_write_trailer,

  1935.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  1936.     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},

  1937. };

  1938. #endif

  1939. #if CONFIG_TGP_MUXER

  1940. AVOutputFormat tgp_muxer = {

  1941.     "3gp",

  1942.     NULL_IF_CONFIG_SMALL("3GP format"),

  1943.     NULL,

  1944.     "3gp",

  1945.     sizeof(MOVMuxContext),

  1946.     CODEC_ID_AMR_NB,

  1947.     CODEC_ID_H263,

  1948.     mov_write_header,

  1949.     mov_write_packet,

  1950.     mov_write_trailer,

  1951.     .flags = AVFMT_GLOBALHEADER,

  1952.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  1953. };

  1954. #endif

  1955. #if CONFIG_MP4_MUXER

  1956. AVOutputFormat mp4_muxer = {

  1957.     "mp4",

  1958.     NULL_IF_CONFIG_SMALL("MP4 format"),

  1959.     "application/mp4",

  1960.     "mp4",

  1961.     sizeof(MOVMuxContext),

  1962.     CODEC_ID_AAC,

  1963.     CODEC_ID_MPEG4,

  1964.     mov_write_header,

  1965.     mov_write_packet,

  1966.     mov_write_trailer,

  1967.     .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,

  1968.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  1969. };

  1970. #endif

  1971. #if CONFIG_PSP_MUXER

  1972. AVOutputFormat psp_muxer = {

  1973.     "psp",

  1974.     NULL_IF_CONFIG_SMALL("PSP MP4 format"),

  1975.     NULL,

  1976.     "mp4,psp",

  1977.     sizeof(MOVMuxContext),

  1978.     CODEC_ID_AAC,

  1979.     CODEC_ID_MPEG4,

  1980.     mov_write_header,

  1981.     mov_write_packet,

  1982.     mov_write_trailer,

  1983.     .flags = AVFMT_GLOBALHEADER,

  1984.     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},

  1985. };

  1986. #endif

  1987. #if CONFIG_TG2_MUXER

  1988. AVOutputFormat tg2_muxer = {

  1989.     "3g2",

  1990.     NULL_IF_CONFIG_SMALL("3GP2 format"),

  1991.     NULL,

  1992.     "3g2",

  1993.     sizeof(MOVMuxContext),

  1994.     CODEC_ID_AMR_NB,

  1995.     CODEC_ID_H263,

  1996.     mov_write_header,

  1997.     mov_write_packet,

  1998.     mov_write_trailer,

  1999.     .flags = AVFMT_GLOBALHEADER,

  2000.     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},

  2001. };

  2002. #endif

  2003. #if CONFIG_IPOD_MUXER

  2004. AVOutputFormat ipod_muxer = {

  2005.     "ipod",

  2006.     NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),

  2007.     "application/mp4",

  2008.     "m4v,m4a",

  2009.     sizeof(MOVMuxContext),

  2010.     CODEC_ID_AAC,

  2011.     CODEC_ID_H264,

  2012.     mov_write_header,

  2013.     mov_write_packet,

  2014.     mov_write_trailer,

  2015.     .flags = AVFMT_GLOBALHEADER,

  2016.     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},

  2017. };

  2018. #endif