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libavformat/movenc.c

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00001 /*
00002  * MOV, 3GP, MP4 muxer
00003  * Copyright (c) 2003 Thomas Raivio
00004  * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
00005  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
00006  *
00007  * This file is part of FFmpeg.
00008  *
00009  * FFmpeg is free software; you can redistribute it and/or
00010  * modify it under the terms of the GNU Lesser General Public
00011  * License as published by the Free Software Foundation; either
00012  * version 2.1 of the License, or (at your option) any later version.
00013  *
00014  * FFmpeg is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017  * Lesser General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU Lesser General Public
00020  * License along with FFmpeg; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00022  */
00023 
00024 #include "movenc.h"
00025 #include "avformat.h"
00026 #include "avio_internal.h"
00027 #include "riff.h"
00028 #include "avio.h"
00029 #include "isom.h"
00030 #include "avc.h"
00031 #include "libavcodec/get_bits.h"
00032 #include "libavcodec/put_bits.h"
00033 #include "internal.h"
00034 #include "libavutil/avstring.h"
00035 #include "libavutil/intfloat.h"
00036 #include "libavutil/mathematics.h"
00037 #include "libavutil/opt.h"
00038 #include "libavutil/dict.h"
00039 #include "rtpenc.h"
00040 #include "mov_chan.h"
00041 
00042 #undef NDEBUG
00043 #include <assert.h>
00044 
00045 static const AVOption options[] = {
00046     { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00047     { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00048     { "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
00049     { "empty_moov", "Make the initial moov atom empty (not supported by QuickTime)", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00050     { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00051     { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00052     { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00053     FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
00054     { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.dbl = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
00055     { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
00056     { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
00057     { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
00058     { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
00059     { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
00060     { NULL },
00061 };
00062 
00063 #define MOV_CLASS(flavor)\
00064 static const AVClass flavor ## _muxer_class = {\
00065     .class_name = #flavor " muxer",\
00066     .item_name  = av_default_item_name,\
00067     .option     = options,\
00068     .version    = LIBAVUTIL_VERSION_INT,\
00069 };
00070 
00071 //FIXME support 64 bit variant with wide placeholders
00072 static int64_t updateSize(AVIOContext *pb, int64_t pos)
00073 {
00074     int64_t curpos = avio_tell(pb);
00075     avio_seek(pb, pos, SEEK_SET);
00076     avio_wb32(pb, curpos - pos); /* rewrite size */
00077     avio_seek(pb, curpos, SEEK_SET);
00078 
00079     return curpos - pos;
00080 }
00081 
00082 /* Chunk offset atom */
00083 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
00084 {
00085     int i;
00086     int mode64 = 0; //   use 32 bit size variant if possible
00087     int64_t pos = avio_tell(pb);
00088     avio_wb32(pb, 0); /* size */
00089     if (pos > UINT32_MAX) {
00090         mode64 = 1;
00091         ffio_wfourcc(pb, "co64");
00092     } else
00093         ffio_wfourcc(pb, "stco");
00094     avio_wb32(pb, 0); /* version & flags */
00095     avio_wb32(pb, track->chunkCount); /* entry count */
00096     for (i=0; i<track->entry; i++) {
00097         if(!track->cluster[i].chunkNum)
00098             continue;
00099         if(mode64 == 1)
00100             avio_wb64(pb, track->cluster[i].pos);
00101         else
00102             avio_wb32(pb, track->cluster[i].pos);
00103     }
00104     return updateSize(pb, pos);
00105 }
00106 
00107 /* Sample size atom */
00108 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
00109 {
00110     int equalChunks = 1;
00111     int i, j, entries = 0, tst = -1, oldtst = -1;
00112 
00113     int64_t pos = avio_tell(pb);
00114     avio_wb32(pb, 0); /* size */
00115     ffio_wfourcc(pb, "stsz");
00116     avio_wb32(pb, 0); /* version & flags */
00117 
00118     for (i=0; i<track->entry; i++) {
00119         tst = track->cluster[i].size/track->cluster[i].entries;
00120         if(oldtst != -1 && tst != oldtst) {
00121             equalChunks = 0;
00122         }
00123         oldtst = tst;
00124         entries += track->cluster[i].entries;
00125     }
00126     if (equalChunks && track->entry) {
00127         int sSize = track->entry ? track->cluster[0].size/track->cluster[0].entries : 0;
00128         sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
00129         avio_wb32(pb, sSize); // sample size
00130         avio_wb32(pb, entries); // sample count
00131     }
00132     else {
00133         avio_wb32(pb, 0); // sample size
00134         avio_wb32(pb, entries); // sample count
00135         for (i=0; i<track->entry; i++) {
00136             for (j=0; j<track->cluster[i].entries; j++) {
00137                 avio_wb32(pb, track->cluster[i].size /
00138                          track->cluster[i].entries);
00139             }
00140         }
00141     }
00142     return updateSize(pb, pos);
00143 }
00144 
00145 /* Sample to chunk atom */
00146 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
00147 {
00148     int index = 0, oldval = -1, i;
00149     int64_t entryPos, curpos;
00150 
00151     int64_t pos = avio_tell(pb);
00152     avio_wb32(pb, 0); /* size */
00153     ffio_wfourcc(pb, "stsc");
00154     avio_wb32(pb, 0); // version & flags
00155     entryPos = avio_tell(pb);
00156     avio_wb32(pb, track->chunkCount); // entry count
00157     for (i=0; i<track->entry; i++) {
00158         if(oldval != track->cluster[i].samplesInChunk && track->cluster[i].chunkNum)
00159         {
00160             avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
00161             avio_wb32(pb, track->cluster[i].samplesInChunk); // samples per chunk
00162             avio_wb32(pb, 0x1); // sample description index
00163             oldval = track->cluster[i].samplesInChunk;
00164             index++;
00165         }
00166     }
00167     curpos = avio_tell(pb);
00168     avio_seek(pb, entryPos, SEEK_SET);
00169     avio_wb32(pb, index); // rewrite size
00170     avio_seek(pb, curpos, SEEK_SET);
00171 
00172     return updateSize(pb, pos);
00173 }
00174 
00175 /* Sync sample atom */
00176 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
00177 {
00178     int64_t curpos, entryPos;
00179     int i, index = 0;
00180     int64_t pos = avio_tell(pb);
00181     avio_wb32(pb, 0); // size
00182     ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
00183     avio_wb32(pb, 0); // version & flags
00184     entryPos = avio_tell(pb);
00185     avio_wb32(pb, track->entry); // entry count
00186     for (i=0; i<track->entry; i++) {
00187         if (track->cluster[i].flags & flag) {
00188             avio_wb32(pb, i+1);
00189             index++;
00190         }
00191     }
00192     curpos = avio_tell(pb);
00193     avio_seek(pb, entryPos, SEEK_SET);
00194     avio_wb32(pb, index); // rewrite size
00195     avio_seek(pb, curpos, SEEK_SET);
00196     return updateSize(pb, pos);
00197 }
00198 
00199 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
00200 {
00201     avio_wb32(pb, 0x11); /* size */
00202     if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
00203     else                         ffio_wfourcc(pb, "damr");
00204     ffio_wfourcc(pb, "FFMP");
00205     avio_w8(pb, 0); /* decoder version */
00206 
00207     avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
00208     avio_w8(pb, 0x00); /* Mode change period (no restriction) */
00209     avio_w8(pb, 0x01); /* Frames per sample */
00210     return 0x11;
00211 }
00212 
00213 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
00214 {
00215     GetBitContext gbc;
00216     PutBitContext pbc;
00217     uint8_t buf[3];
00218     int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
00219 
00220     if (track->vosLen < 7)
00221         return -1;
00222 
00223     avio_wb32(pb, 11);
00224     ffio_wfourcc(pb, "dac3");
00225 
00226     init_get_bits(&gbc, track->vosData+4, (track->vosLen-4) * 8);
00227     fscod      = get_bits(&gbc, 2);
00228     frmsizecod = get_bits(&gbc, 6);
00229     bsid       = get_bits(&gbc, 5);
00230     bsmod      = get_bits(&gbc, 3);
00231     acmod      = get_bits(&gbc, 3);
00232     if (acmod == 2) {
00233         skip_bits(&gbc, 2); // dsurmod
00234     } else {
00235         if ((acmod & 1) && acmod != 1)
00236             skip_bits(&gbc, 2); // cmixlev
00237         if (acmod & 4)
00238             skip_bits(&gbc, 2); // surmixlev
00239     }
00240     lfeon = get_bits1(&gbc);
00241 
00242     init_put_bits(&pbc, buf, sizeof(buf));
00243     put_bits(&pbc, 2, fscod);
00244     put_bits(&pbc, 5, bsid);
00245     put_bits(&pbc, 3, bsmod);
00246     put_bits(&pbc, 3, acmod);
00247     put_bits(&pbc, 1, lfeon);
00248     put_bits(&pbc, 5, frmsizecod>>1); // bit_rate_code
00249     put_bits(&pbc, 5, 0); // reserved
00250 
00251     flush_put_bits(&pbc);
00252     avio_write(pb, buf, sizeof(buf));
00253 
00254     return 11;
00255 }
00256 
00261 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
00262 {
00263     avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00264     return track->enc->extradata_size;
00265 }
00266 
00267 static int mov_write_enda_tag(AVIOContext *pb)
00268 {
00269     avio_wb32(pb, 10);
00270     ffio_wfourcc(pb, "enda");
00271     avio_wb16(pb, 1); /* little endian */
00272     return 10;
00273 }
00274 
00275 static void putDescr(AVIOContext *pb, int tag, unsigned int size)
00276 {
00277     int i = 3;
00278     avio_w8(pb, tag);
00279     for(; i>0; i--)
00280         avio_w8(pb, (size>>(7*i)) | 0x80);
00281     avio_w8(pb, size & 0x7F);
00282 }
00283 
00284 static unsigned compute_avg_bitrate(MOVTrack *track)
00285 {
00286     uint64_t size = 0;
00287     int i;
00288     for (i = 0; i < track->entry; i++)
00289         size += track->cluster[i].size;
00290     return size * 8 * track->timescale / track->trackDuration;
00291 }
00292 
00293 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
00294 {
00295     int64_t pos = avio_tell(pb);
00296     int decoderSpecificInfoLen = track->vosLen ? 5+track->vosLen : 0;
00297     unsigned avg_bitrate;
00298 
00299     avio_wb32(pb, 0); // size
00300     ffio_wfourcc(pb, "esds");
00301     avio_wb32(pb, 0); // Version
00302 
00303     // ES descriptor
00304     putDescr(pb, 0x03, 3 + 5+13 + decoderSpecificInfoLen + 5+1);
00305     avio_wb16(pb, track->trackID);
00306     avio_w8(pb, 0x00); // flags (= no flags)
00307 
00308     // DecoderConfig descriptor
00309     putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
00310 
00311     // Object type indication
00312     if ((track->enc->codec_id == CODEC_ID_MP2 ||
00313          track->enc->codec_id == CODEC_ID_MP3) &&
00314         track->enc->sample_rate > 24000)
00315         avio_w8(pb, 0x6B); // 11172-3
00316     else
00317         avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
00318 
00319     // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
00320     // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
00321     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00322         avio_w8(pb, 0x15); // flags (= Audiostream)
00323     else
00324         avio_w8(pb, 0x11); // flags (= Visualstream)
00325 
00326     avio_w8(pb,  track->enc->rc_buffer_size>>(3+16));      // Buffersize DB (24 bits)
00327     avio_wb16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB
00328 
00329     avg_bitrate = compute_avg_bitrate(track);
00330     // maxbitrate (FIXME should be max rate in any 1 sec window)
00331     avio_wb32(pb, FFMAX3(track->enc->bit_rate, track->enc->rc_max_rate, avg_bitrate));
00332     avio_wb32(pb, avg_bitrate);
00333 
00334     if (track->vosLen) {
00335         // DecoderSpecific info descriptor
00336         putDescr(pb, 0x05, track->vosLen);
00337         avio_write(pb, track->vosData, track->vosLen);
00338     }
00339 
00340     // SL descriptor
00341     putDescr(pb, 0x06, 1);
00342     avio_w8(pb, 0x02);
00343     return updateSize(pb, pos);
00344 }
00345 
00346 static int mov_pcm_le_gt16(enum CodecID codec_id)
00347 {
00348     return codec_id == CODEC_ID_PCM_S24LE ||
00349            codec_id == CODEC_ID_PCM_S32LE ||
00350            codec_id == CODEC_ID_PCM_F32LE ||
00351            codec_id == CODEC_ID_PCM_F64LE;
00352 }
00353 
00354 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
00355 {
00356     int64_t pos = avio_tell(pb);
00357     avio_wb32(pb, 0);
00358     avio_wl32(pb, track->tag); // store it byteswapped
00359     track->enc->codec_tag = av_bswap16(track->tag >> 16);
00360     ff_put_wav_header(pb, track->enc);
00361     return updateSize(pb, pos);
00362 }
00363 
00364 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
00365 {
00366     uint32_t layout_tag, bitmap;
00367     int64_t pos = avio_tell(pb);
00368 
00369     layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
00370                                                track->enc->channel_layout,
00371                                                &bitmap);
00372     if (!layout_tag) {
00373         av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
00374                "lack of channel information\n");
00375         return 0;
00376     }
00377 
00378     avio_wb32(pb, 0);           // Size
00379     ffio_wfourcc(pb, "chan");   // Type
00380     avio_w8(pb, 0);             // Version
00381     avio_wb24(pb, 0);           // Flags
00382     avio_wb32(pb, layout_tag);  // mChannelLayoutTag
00383     avio_wb32(pb, bitmap);      // mChannelBitmap
00384     avio_wb32(pb, 0);           // mNumberChannelDescriptions
00385 
00386     return updateSize(pb, pos);
00387 }
00388 
00389 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
00390 {
00391     int64_t pos = avio_tell(pb);
00392 
00393     avio_wb32(pb, 0);     /* size */
00394     ffio_wfourcc(pb, "wave");
00395 
00396     avio_wb32(pb, 12);    /* size */
00397     ffio_wfourcc(pb, "frma");
00398     avio_wl32(pb, track->tag);
00399 
00400     if (track->enc->codec_id == CODEC_ID_AAC) {
00401         /* useless atom needed by mplayer, ipod, not needed by quicktime */
00402         avio_wb32(pb, 12); /* size */
00403         ffio_wfourcc(pb, "mp4a");
00404         avio_wb32(pb, 0);
00405         mov_write_esds_tag(pb, track);
00406     } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
00407         mov_write_enda_tag(pb);
00408     } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {
00409         mov_write_amr_tag(pb, track);
00410     } else if (track->enc->codec_id == CODEC_ID_AC3) {
00411         mov_write_chan_tag(pb, track);
00412         mov_write_ac3_tag(pb, track);
00413     } else if (track->enc->codec_id == CODEC_ID_ALAC) {
00414         mov_write_extradata_tag(pb, track);
00415     } else if (track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00416                track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00417         mov_write_ms_tag(pb, track);
00418     }
00419 
00420     avio_wb32(pb, 8);     /* size */
00421     avio_wb32(pb, 0);     /* null tag */
00422 
00423     return updateSize(pb, pos);
00424 }
00425 
00426 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
00427 {
00428     avio_wb32(pb, track->vosLen+8);
00429     ffio_wfourcc(pb, "glbl");
00430     avio_write(pb, track->vosData, track->vosLen);
00431     return 8+track->vosLen;
00432 }
00433 
00438 static int mov_get_lpcm_flags(enum CodecID codec_id)
00439 {
00440     switch (codec_id) {
00441     case CODEC_ID_PCM_F32BE:
00442     case CODEC_ID_PCM_F64BE:
00443         return 11;
00444     case CODEC_ID_PCM_F32LE:
00445     case CODEC_ID_PCM_F64LE:
00446         return 9;
00447     case CODEC_ID_PCM_U8:
00448         return 10;
00449     case CODEC_ID_PCM_S16BE:
00450     case CODEC_ID_PCM_S24BE:
00451     case CODEC_ID_PCM_S32BE:
00452         return 14;
00453     case CODEC_ID_PCM_S8:
00454     case CODEC_ID_PCM_S16LE:
00455     case CODEC_ID_PCM_S24LE:
00456     case CODEC_ID_PCM_S32LE:
00457         return 12;
00458     default:
00459         return 0;
00460     }
00461 }
00462 
00463 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
00464 {
00465     int64_t pos = avio_tell(pb);
00466     int version = 0;
00467     uint32_t tag = track->tag;
00468 
00469     if (track->mode == MODE_MOV) {
00470         if (track->timescale > UINT16_MAX) {
00471             if (mov_get_lpcm_flags(track->enc->codec_id))
00472                 tag = AV_RL32("lpcm");
00473             version = 2;
00474         } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
00475                    track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00476                    track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00477             version = 1;
00478         }
00479     }
00480 
00481     avio_wb32(pb, 0); /* size */
00482     avio_wl32(pb, tag); // store it byteswapped
00483     avio_wb32(pb, 0); /* Reserved */
00484     avio_wb16(pb, 0); /* Reserved */
00485     avio_wb16(pb, 1); /* Data-reference index, XXX  == 1 */
00486 
00487     /* SoundDescription */
00488     avio_wb16(pb, version); /* Version */
00489     avio_wb16(pb, 0); /* Revision level */
00490     avio_wb32(pb, 0); /* Reserved */
00491 
00492     if (version == 2) {
00493         avio_wb16(pb, 3);
00494         avio_wb16(pb, 16);
00495         avio_wb16(pb, 0xfffe);
00496         avio_wb16(pb, 0);
00497         avio_wb32(pb, 0x00010000);
00498         avio_wb32(pb, 72);
00499         avio_wb64(pb, av_double2int(track->enc->sample_rate));
00500         avio_wb32(pb, track->enc->channels);
00501         avio_wb32(pb, 0x7F000000);
00502         avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
00503         avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
00504         avio_wb32(pb, track->sampleSize);
00505         avio_wb32(pb, track->enc->frame_size);
00506     } else {
00507         if (track->mode == MODE_MOV) {
00508             avio_wb16(pb, track->enc->channels);
00509             if (track->enc->codec_id == CODEC_ID_PCM_U8 ||
00510                 track->enc->codec_id == CODEC_ID_PCM_S8)
00511                 avio_wb16(pb, 8); /* bits per sample */
00512             else
00513                 avio_wb16(pb, 16);
00514             avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
00515         } else { /* reserved for mp4/3gp */
00516             avio_wb16(pb, 2);
00517             avio_wb16(pb, 16);
00518             avio_wb16(pb, 0);
00519         }
00520 
00521         avio_wb16(pb, 0); /* packet size (= 0) */
00522         avio_wb16(pb, track->enc->sample_rate);
00523         avio_wb16(pb, 0); /* Reserved */
00524     }
00525 
00526     if(version == 1) { /* SoundDescription V1 extended info */
00527         avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
00528         avio_wb32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
00529         avio_wb32(pb, track->sampleSize); /* Bytes per frame */
00530         avio_wb32(pb, 2); /* Bytes per sample */
00531     }
00532 
00533     if(track->mode == MODE_MOV &&
00534        (track->enc->codec_id == CODEC_ID_AAC ||
00535         track->enc->codec_id == CODEC_ID_AC3 ||
00536         track->enc->codec_id == CODEC_ID_AMR_NB ||
00537         track->enc->codec_id == CODEC_ID_ALAC ||
00538         track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00539         track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV ||
00540         mov_pcm_le_gt16(track->enc->codec_id)))
00541         mov_write_wave_tag(pb, track);
00542     else if(track->tag == MKTAG('m','p','4','a'))
00543         mov_write_esds_tag(pb, track);
00544     else if(track->enc->codec_id == CODEC_ID_AMR_NB)
00545         mov_write_amr_tag(pb, track);
00546     else if(track->enc->codec_id == CODEC_ID_AC3)
00547         mov_write_ac3_tag(pb, track);
00548     else if(track->enc->codec_id == CODEC_ID_ALAC)
00549         mov_write_extradata_tag(pb, track);
00550     else if(track->vosLen > 0)
00551         mov_write_glbl_tag(pb, track);
00552 
00553     return updateSize(pb, pos);
00554 }
00555 
00556 static int mov_write_d263_tag(AVIOContext *pb)
00557 {
00558     avio_wb32(pb, 0xf); /* size */
00559     ffio_wfourcc(pb, "d263");
00560     ffio_wfourcc(pb, "FFMP");
00561     avio_w8(pb, 0); /* decoder version */
00562     /* FIXME use AVCodecContext level/profile, when encoder will set values */
00563     avio_w8(pb, 0xa); /* level */
00564     avio_w8(pb, 0); /* profile */
00565     return 0xf;
00566 }
00567 
00568 /* TODO: No idea about these values */
00569 static int mov_write_svq3_tag(AVIOContext *pb)
00570 {
00571     avio_wb32(pb, 0x15);
00572     ffio_wfourcc(pb, "SMI ");
00573     ffio_wfourcc(pb, "SEQH");
00574     avio_wb32(pb, 0x5);
00575     avio_wb32(pb, 0xe2c0211d);
00576     avio_wb32(pb, 0xc0000000);
00577     avio_w8(pb, 0);
00578     return 0x15;
00579 }
00580 
00581 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
00582 {
00583     int64_t pos = avio_tell(pb);
00584 
00585     avio_wb32(pb, 0);
00586     ffio_wfourcc(pb, "avcC");
00587     ff_isom_write_avcc(pb, track->vosData, track->vosLen);
00588     return updateSize(pb, pos);
00589 }
00590 
00591 /* also used by all avid codecs (dv, imx, meridien) and their variants */
00592 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
00593 {
00594     int i;
00595     avio_wb32(pb, 24); /* size */
00596     ffio_wfourcc(pb, "ACLR");
00597     ffio_wfourcc(pb, "ACLR");
00598     ffio_wfourcc(pb, "0001");
00599     avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
00600     avio_wb32(pb, 0); /* unknown */
00601 
00602     avio_wb32(pb, 24); /* size */
00603     ffio_wfourcc(pb, "APRG");
00604     ffio_wfourcc(pb, "APRG");
00605     ffio_wfourcc(pb, "0001");
00606     avio_wb32(pb, 1); /* unknown */
00607     avio_wb32(pb, 0); /* unknown */
00608 
00609     avio_wb32(pb, 120); /* size */
00610     ffio_wfourcc(pb, "ARES");
00611     ffio_wfourcc(pb, "ARES");
00612     ffio_wfourcc(pb, "0001");
00613     avio_wb32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */
00614     avio_wb32(pb, track->enc->width);
00615     /* values below are based on samples created with quicktime and avid codecs */
00616     if (track->vosData[5] & 2) { // interlaced
00617         avio_wb32(pb, track->enc->height/2);
00618         avio_wb32(pb, 2); /* unknown */
00619         avio_wb32(pb, 0); /* unknown */
00620         avio_wb32(pb, 4); /* unknown */
00621     } else {
00622         avio_wb32(pb, track->enc->height);
00623         avio_wb32(pb, 1); /* unknown */
00624         avio_wb32(pb, 0); /* unknown */
00625         if (track->enc->height == 1080)
00626             avio_wb32(pb, 5); /* unknown */
00627         else
00628             avio_wb32(pb, 6); /* unknown */
00629     }
00630     /* padding */
00631     for (i = 0; i < 10; i++)
00632         avio_wb64(pb, 0);
00633 
00634     /* extra padding for stsd needed */
00635     avio_wb32(pb, 0);
00636     return 0;
00637 }
00638 
00639 static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00640 {
00641     int tag = track->enc->codec_tag;
00642 
00643     if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
00644         return 0;
00645 
00646     if      (track->enc->codec_id == CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
00647     else if (track->enc->codec_id == CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
00648     else if (track->enc->codec_id == CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
00649     else if (track->enc->codec_id == CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');
00650     else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
00651     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
00652 
00653     return tag;
00654 }
00655 
00656 static const AVCodecTag codec_ipod_tags[] = {
00657     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00658     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00659     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00660     { CODEC_ID_ALAC,   MKTAG('a','l','a','c') },
00661     { CODEC_ID_AC3,    MKTAG('a','c','-','3') },
00662     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00663     { CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
00664     { CODEC_ID_NONE, 0 },
00665 };
00666 
00667 static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00668 {
00669     int tag = track->enc->codec_tag;
00670 
00671     // keep original tag for subs, ipod supports both formats
00672     if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
00673         (tag == MKTAG('t','x','3','g') ||
00674          tag == MKTAG('t','e','x','t'))))
00675         tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
00676 
00677     if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
00678         av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
00679                "Quicktime/Ipod might not play the file\n");
00680 
00681     return tag;
00682 }
00683 
00684 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
00685 {
00686     int tag;
00687 
00688     if (track->enc->width == 720) /* SD */
00689         if (track->enc->height == 480) /* NTSC */
00690             if  (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
00691             else                                         tag = MKTAG('d','v','c',' ');
00692         else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
00693         else if (track->enc->pix_fmt == PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
00694         else                                             tag = MKTAG('d','v','p','p');
00695     else if (track->enc->height == 720) /* HD 720 line */
00696         if  (track->enc->time_base.den == 50)            tag = MKTAG('d','v','h','q');
00697         else                                             tag = MKTAG('d','v','h','p');
00698     else if (track->enc->height == 1080) /* HD 1080 line */
00699         if  (track->enc->time_base.den == 25)            tag = MKTAG('d','v','h','5');
00700         else                                             tag = MKTAG('d','v','h','6');
00701     else {
00702         av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
00703         return 0;
00704     }
00705 
00706     return tag;
00707 }
00708 
00709 static const struct {
00710     enum PixelFormat pix_fmt;
00711     uint32_t tag;
00712     unsigned bps;
00713 } mov_pix_fmt_tags[] = {
00714     { PIX_FMT_YUYV422, MKTAG('y','u','v','s'),  0 },
00715     { PIX_FMT_UYVY422, MKTAG('2','v','u','y'),  0 },
00716     { PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
00717     { PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
00718     { PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
00719     { PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
00720     { PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
00721     { PIX_FMT_RGB24,   MKTAG('r','a','w',' '), 24 },
00722     { PIX_FMT_BGR24,   MKTAG('2','4','B','G'), 24 },
00723     { PIX_FMT_ARGB,    MKTAG('r','a','w',' '), 32 },
00724     { PIX_FMT_BGRA,    MKTAG('B','G','R','A'), 32 },
00725     { PIX_FMT_RGBA,    MKTAG('R','G','B','A'), 32 },
00726     { PIX_FMT_ABGR,    MKTAG('A','B','G','R'), 32 },
00727     { PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
00728 };
00729 
00730 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
00731 {
00732     int tag = track->enc->codec_tag;
00733     int i;
00734 
00735     for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
00736         if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
00737             tag = mov_pix_fmt_tags[i].tag;
00738             track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
00739             break;
00740         }
00741     }
00742 
00743     return tag;
00744 }
00745 
00746 static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00747 {
00748     int tag = track->enc->codec_tag;
00749 
00750     if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
00751                  (track->enc->codec_id == CODEC_ID_DVVIDEO ||
00752                   track->enc->codec_id == CODEC_ID_RAWVIDEO ||
00753                   track->enc->codec_id == CODEC_ID_H263 ||
00754                   av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
00755         if (track->enc->codec_id == CODEC_ID_DVVIDEO)
00756             tag = mov_get_dv_codec_tag(s, track);
00757         else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)
00758             tag = mov_get_rawvideo_codec_tag(s, track);
00759         else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
00760             tag = ff_codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
00761             if (!tag) { // if no mac fcc found, try with Microsoft tags
00762                 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
00763                 if (tag)
00764                     av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
00765                            "the file may be unplayable!\n");
00766             }
00767         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
00768             tag = ff_codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
00769             if (!tag) { // if no mac fcc found, try with Microsoft tags
00770                 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
00771                 if (ms_tag) {
00772                     tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
00773                     av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
00774                            "the file may be unplayable!\n");
00775                 }
00776             }
00777         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00778             tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
00779     }
00780 
00781     return tag;
00782 }
00783 
00784 static const AVCodecTag codec_3gp_tags[] = {
00785     { CODEC_ID_H263,   MKTAG('s','2','6','3') },
00786     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00787     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00788     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00789     { CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
00790     { CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
00791     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00792     { CODEC_ID_NONE, 0 },
00793 };
00794 
00795 static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
00796 {
00797     int tag = track->enc->codec_tag;
00798 
00799     if (track->mode == MODE_MP4 || track->mode == MODE_PSP || track->mode == MODE_ISM)
00800         tag = mp4_get_codec_tag(s, track);
00801     else if (track->mode == MODE_IPOD)
00802         tag = ipod_get_codec_tag(s, track);
00803     else if (track->mode & MODE_3GP)
00804         tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
00805     else
00806         tag = mov_get_codec_tag(s, track);
00807 
00808     return tag;
00809 }
00810 
00815 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
00816 {
00817     avio_wb32(pb, 28);
00818     ffio_wfourcc(pb, "uuid");
00819     avio_wb32(pb, 0x6b6840f2);
00820     avio_wb32(pb, 0x5f244fc5);
00821     avio_wb32(pb, 0xba39a51b);
00822     avio_wb32(pb, 0xcf0323f3);
00823     avio_wb32(pb, 0x0);
00824     return 28;
00825 }
00826 
00827 static const uint16_t fiel_data[] = {
00828     0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
00829 };
00830 
00831 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
00832 {
00833     unsigned mov_field_order = 0;
00834     if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
00835         mov_field_order = fiel_data[track->enc->field_order];
00836     else
00837         return 0;
00838     avio_wb32(pb, 10);
00839     ffio_wfourcc(pb, "fiel");
00840     avio_wb16(pb, mov_field_order);
00841     return 10;
00842 }
00843 
00844 static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
00845 {
00846     int64_t pos = avio_tell(pb);
00847     avio_wb32(pb, 0);    /* size */
00848     avio_wl32(pb, track->tag); // store it byteswapped
00849     avio_wb32(pb, 0);    /* Reserved */
00850     avio_wb16(pb, 0);    /* Reserved */
00851     avio_wb16(pb, 1);    /* Data-reference index */
00852 
00853     if (track->enc->extradata_size)
00854         avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00855 
00856     return updateSize(pb, pos);
00857 }
00858 
00859 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
00860 {
00861     AVRational sar;
00862     av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
00863               track->enc->sample_aspect_ratio.den, INT_MAX);
00864 
00865     avio_wb32(pb, 16);
00866     ffio_wfourcc(pb, "pasp");
00867     avio_wb32(pb, sar.num);
00868     avio_wb32(pb, sar.den);
00869     return 16;
00870 }
00871 
00872 static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
00873 {
00874     int64_t pos = avio_tell(pb);
00875     char compressor_name[32];
00876 
00877     avio_wb32(pb, 0); /* size */
00878     avio_wl32(pb, track->tag); // store it byteswapped
00879     avio_wb32(pb, 0); /* Reserved */
00880     avio_wb16(pb, 0); /* Reserved */
00881     avio_wb16(pb, 1); /* Data-reference index */
00882 
00883     avio_wb16(pb, 0); /* Codec stream version */
00884     avio_wb16(pb, 0); /* Codec stream revision (=0) */
00885     if (track->mode == MODE_MOV) {
00886         ffio_wfourcc(pb, "FFMP"); /* Vendor */
00887         if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
00888             avio_wb32(pb, 0); /* Temporal Quality */
00889             avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
00890         } else {
00891             avio_wb32(pb, 0x200); /* Temporal Quality = normal */
00892             avio_wb32(pb, 0x200); /* Spatial Quality = normal */
00893         }
00894     } else {
00895         avio_wb32(pb, 0); /* Reserved */
00896         avio_wb32(pb, 0); /* Reserved */
00897         avio_wb32(pb, 0); /* Reserved */
00898     }
00899     avio_wb16(pb, track->enc->width); /* Video width */
00900     avio_wb16(pb, track->height); /* Video height */
00901     avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
00902     avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
00903     avio_wb32(pb, 0); /* Data size (= 0) */
00904     avio_wb16(pb, 1); /* Frame count (= 1) */
00905 
00906     memset(compressor_name,0,32);
00907     /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
00908     if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
00909         av_strlcpy(compressor_name,track->enc->codec->name,32);
00910     avio_w8(pb, strlen(compressor_name));
00911     avio_write(pb, compressor_name, 31);
00912 
00913     if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
00914         avio_wb16(pb, track->enc->bits_per_coded_sample);
00915     else
00916         avio_wb16(pb, 0x18); /* Reserved */
00917     avio_wb16(pb, 0xffff); /* Reserved */
00918     if(track->tag == MKTAG('m','p','4','v'))
00919         mov_write_esds_tag(pb, track);
00920     else if(track->enc->codec_id == CODEC_ID_H263)
00921         mov_write_d263_tag(pb);
00922     else if(track->enc->codec_id == CODEC_ID_SVQ3)
00923         mov_write_svq3_tag(pb);
00924     else if(track->enc->codec_id == CODEC_ID_DNXHD)
00925         mov_write_avid_tag(pb, track);
00926     else if(track->enc->codec_id == CODEC_ID_H264) {
00927         mov_write_avcc_tag(pb, track);
00928         if(track->mode == MODE_IPOD)
00929             mov_write_uuid_tag_ipod(pb);
00930     } else if (track->enc->field_order != AV_FIELD_UNKNOWN)
00931         mov_write_fiel_tag(pb, track);
00932     else if(track->vosLen > 0)
00933         mov_write_glbl_tag(pb, track);
00934 
00935     if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
00936         track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
00937         mov_write_pasp_tag(pb, track);
00938     }
00939 
00940     return updateSize(pb, pos);
00941 }
00942 
00943 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
00944 {
00945     int64_t pos = avio_tell(pb);
00946     avio_wb32(pb, 0); /* size */
00947     ffio_wfourcc(pb, "rtp ");
00948     avio_wb32(pb, 0); /* Reserved */
00949     avio_wb16(pb, 0); /* Reserved */
00950     avio_wb16(pb, 1); /* Data-reference index */
00951 
00952     avio_wb16(pb, 1); /* Hint track version */
00953     avio_wb16(pb, 1); /* Highest compatible version */
00954     avio_wb32(pb, track->max_packet_size); /* Max packet size */
00955 
00956     avio_wb32(pb, 12); /* size */
00957     ffio_wfourcc(pb, "tims");
00958     avio_wb32(pb, track->timescale);
00959 
00960     return updateSize(pb, pos);
00961 }
00962 
00963 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
00964 {
00965     int64_t pos = avio_tell(pb);
00966     avio_wb32(pb, 0); /* size */
00967     ffio_wfourcc(pb, "stsd");
00968     avio_wb32(pb, 0); /* version & flags */
00969     avio_wb32(pb, 1); /* entry count */
00970     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
00971         mov_write_video_tag(pb, track);
00972     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00973         mov_write_audio_tag(pb, track);
00974     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00975         mov_write_subtitle_tag(pb, track);
00976     else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
00977         mov_write_rtp_tag(pb, track);
00978     return updateSize(pb, pos);
00979 }
00980 
00981 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
00982 {
00983     MOVStts *ctts_entries;
00984     uint32_t entries = 0;
00985     uint32_t atom_size;
00986     int i;
00987 
00988     ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
00989     ctts_entries[0].count = 1;
00990     ctts_entries[0].duration = track->cluster[0].cts;
00991     for (i=1; i<track->entry; i++) {
00992         if (track->cluster[i].cts == ctts_entries[entries].duration) {
00993             ctts_entries[entries].count++; /* compress */
00994         } else {
00995             entries++;
00996             ctts_entries[entries].duration = track->cluster[i].cts;
00997             ctts_entries[entries].count = 1;
00998         }
00999     }
01000     entries++; /* last one */
01001     atom_size = 16 + (entries * 8);
01002     avio_wb32(pb, atom_size); /* size */
01003     ffio_wfourcc(pb, "ctts");
01004     avio_wb32(pb, 0); /* version & flags */
01005     avio_wb32(pb, entries); /* entry count */
01006     for (i=0; i<entries; i++) {
01007         avio_wb32(pb, ctts_entries[i].count);
01008         avio_wb32(pb, ctts_entries[i].duration);
01009     }
01010     av_free(ctts_entries);
01011     return atom_size;
01012 }
01013 
01014 /* Time to sample atom */
01015 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
01016 {
01017     MOVStts *stts_entries;
01018     uint32_t entries = -1;
01019     uint32_t atom_size;
01020     int i;
01021 
01022     if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
01023         stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
01024         stts_entries[0].count = track->sampleCount;
01025         stts_entries[0].duration = 1;
01026         entries = 1;
01027     } else {
01028         stts_entries = track->entry ?
01029                        av_malloc(track->entry * sizeof(*stts_entries)) : /* worst case */
01030                        NULL;
01031         for (i=0; i<track->entry; i++) {
01032             int64_t duration = i + 1 == track->entry ?
01033                 track->trackDuration - track->cluster[i].dts + track->start_dts : /* readjusting */
01034                 track->cluster[i+1].dts - track->cluster[i].dts;
01035             if (i && duration == stts_entries[entries].duration) {
01036                 stts_entries[entries].count++; /* compress */
01037             } else {
01038                 entries++;
01039                 stts_entries[entries].duration = duration;
01040                 stts_entries[entries].count = 1;
01041             }
01042         }
01043         entries++; /* last one */
01044     }
01045     atom_size = 16 + (entries * 8);
01046     avio_wb32(pb, atom_size); /* size */
01047     ffio_wfourcc(pb, "stts");
01048     avio_wb32(pb, 0); /* version & flags */
01049     avio_wb32(pb, entries); /* entry count */
01050     for (i=0; i<entries; i++) {
01051         avio_wb32(pb, stts_entries[i].count);
01052         avio_wb32(pb, stts_entries[i].duration);
01053     }
01054     av_free(stts_entries);
01055     return atom_size;
01056 }
01057 
01058 static int mov_write_dref_tag(AVIOContext *pb)
01059 {
01060     avio_wb32(pb, 28); /* size */
01061     ffio_wfourcc(pb, "dref");
01062     avio_wb32(pb, 0); /* version & flags */
01063     avio_wb32(pb, 1); /* entry count */
01064 
01065     avio_wb32(pb, 0xc); /* size */
01066     //FIXME add the alis and rsrc atom
01067     ffio_wfourcc(pb, "url ");
01068     avio_wb32(pb, 1); /* version & flags */
01069 
01070     return 28;
01071 }
01072 
01073 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
01074 {
01075     int64_t pos = avio_tell(pb);
01076     avio_wb32(pb, 0); /* size */
01077     ffio_wfourcc(pb, "stbl");
01078     mov_write_stsd_tag(pb, track);
01079     mov_write_stts_tag(pb, track);
01080     if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01081          track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
01082         track->hasKeyframes && track->hasKeyframes < track->entry)
01083         mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
01084     if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
01085         mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
01086     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
01087         track->flags & MOV_TRACK_CTTS)
01088         mov_write_ctts_tag(pb, track);
01089     mov_write_stsc_tag(pb, track);
01090     mov_write_stsz_tag(pb, track);
01091     mov_write_stco_tag(pb, track);
01092     return updateSize(pb, pos);
01093 }
01094 
01095 static int mov_write_dinf_tag(AVIOContext *pb)
01096 {
01097     int64_t pos = avio_tell(pb);
01098     avio_wb32(pb, 0); /* size */
01099     ffio_wfourcc(pb, "dinf");
01100     mov_write_dref_tag(pb);
01101     return updateSize(pb, pos);
01102 }
01103 
01104 static int mov_write_nmhd_tag(AVIOContext *pb)
01105 {
01106     avio_wb32(pb, 12);
01107     ffio_wfourcc(pb, "nmhd");
01108     avio_wb32(pb, 0);
01109     return 12;
01110 }
01111 
01112 static int mov_write_gmhd_tag(AVIOContext *pb)
01113 {
01114     avio_wb32(pb, 0x20);   /* size */
01115     ffio_wfourcc(pb, "gmhd");
01116     avio_wb32(pb, 0x18);   /* gmin size */
01117     ffio_wfourcc(pb, "gmin");/* generic media info */
01118     avio_wb32(pb, 0);      /* version & flags */
01119     avio_wb16(pb, 0x40);   /* graphics mode = */
01120     avio_wb16(pb, 0x8000); /* opColor (r?) */
01121     avio_wb16(pb, 0x8000); /* opColor (g?) */
01122     avio_wb16(pb, 0x8000); /* opColor (b?) */
01123     avio_wb16(pb, 0);      /* balance */
01124     avio_wb16(pb, 0);      /* reserved */
01125     return 0x20;
01126 }
01127 
01128 static int mov_write_smhd_tag(AVIOContext *pb)
01129 {
01130     avio_wb32(pb, 16); /* size */
01131     ffio_wfourcc(pb, "smhd");
01132     avio_wb32(pb, 0); /* version & flags */
01133     avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
01134     avio_wb16(pb, 0); /* reserved */
01135     return 16;
01136 }
01137 
01138 static int mov_write_vmhd_tag(AVIOContext *pb)
01139 {
01140     avio_wb32(pb, 0x14); /* size (always 0x14) */
01141     ffio_wfourcc(pb, "vmhd");
01142     avio_wb32(pb, 0x01); /* version & flags */
01143     avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
01144     return 0x14;
01145 }
01146 
01147 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
01148 {
01149     const char *hdlr, *descr = NULL, *hdlr_type = NULL;
01150     int64_t pos = avio_tell(pb);
01151 
01152     if (!track) { /* no media --> data handler */
01153         hdlr = "dhlr";
01154         hdlr_type = "url ";
01155         descr = "DataHandler";
01156     } else {
01157         hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
01158         if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01159             hdlr_type = "vide";
01160             descr = "VideoHandler";
01161         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
01162             hdlr_type = "soun";
01163             descr = "SoundHandler";
01164         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01165             if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
01166             else                                      hdlr_type = "text";
01167             descr = "SubtitleHandler";
01168         } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
01169             hdlr_type = "hint";
01170             descr = "HintHandler";
01171         }
01172     }
01173 
01174     avio_wb32(pb, 0); /* size */
01175     ffio_wfourcc(pb, "hdlr");
01176     avio_wb32(pb, 0); /* Version & flags */
01177     avio_write(pb, hdlr, 4); /* handler */
01178     ffio_wfourcc(pb, hdlr_type); /* handler type */
01179     avio_wb32(pb ,0); /* reserved */
01180     avio_wb32(pb ,0); /* reserved */
01181     avio_wb32(pb ,0); /* reserved */
01182     if (!track || track->mode == MODE_MOV)
01183         avio_w8(pb, strlen(descr)); /* pascal string */
01184     avio_write(pb, descr, strlen(descr)); /* handler description */
01185     if (track && track->mode != MODE_MOV)
01186         avio_w8(pb, 0); /* c string */
01187     return updateSize(pb, pos);
01188 }
01189 
01190 static int mov_write_hmhd_tag(AVIOContext *pb)
01191 {
01192     /* This atom must be present, but leaving the values at zero
01193      * seems harmless. */
01194     avio_wb32(pb, 28); /* size */
01195     ffio_wfourcc(pb, "hmhd");
01196     avio_wb32(pb, 0); /* version, flags */
01197     avio_wb16(pb, 0); /* maxPDUsize */
01198     avio_wb16(pb, 0); /* avgPDUsize */
01199     avio_wb32(pb, 0); /* maxbitrate */
01200     avio_wb32(pb, 0); /* avgbitrate */
01201     avio_wb32(pb, 0); /* reserved */
01202     return 28;
01203 }
01204 
01205 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
01206 {
01207     int64_t pos = avio_tell(pb);
01208     avio_wb32(pb, 0); /* size */
01209     ffio_wfourcc(pb, "minf");
01210     if(track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
01211         mov_write_vmhd_tag(pb);
01212     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01213         mov_write_smhd_tag(pb);
01214     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01215         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
01216         else                                      mov_write_nmhd_tag(pb);
01217     } else if (track->tag == MKTAG('r','t','p',' ')) {
01218         mov_write_hmhd_tag(pb);
01219     }
01220     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
01221         mov_write_hdlr_tag(pb, NULL);
01222     mov_write_dinf_tag(pb);
01223     mov_write_stbl_tag(pb, track);
01224     return updateSize(pb, pos);
01225 }
01226 
01227 static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
01228 {
01229     int version = track->trackDuration < INT32_MAX ? 0 : 1;
01230 
01231     (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
01232     ffio_wfourcc(pb, "mdhd");
01233     avio_w8(pb, version);
01234     avio_wb24(pb, 0); /* flags */
01235     if (version == 1) {
01236         avio_wb64(pb, track->time);
01237         avio_wb64(pb, track->time);
01238     } else {
01239         avio_wb32(pb, track->time); /* creation time */
01240         avio_wb32(pb, track->time); /* modification time */
01241     }
01242     avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
01243     (version == 1) ? avio_wb64(pb, track->trackDuration) : avio_wb32(pb, track->trackDuration); /* duration */
01244     avio_wb16(pb, track->language); /* language */
01245     avio_wb16(pb, 0); /* reserved (quality) */
01246 
01247     if(version!=0 && track->mode == MODE_MOV){
01248         av_log(NULL, AV_LOG_ERROR,
01249             "FATAL error, file duration too long for timebase, this file will not be\n"
01250             "playable with quicktime. Choose a different timebase or a different\n"
01251             "container format\n");
01252     }
01253 
01254     return 32;
01255 }
01256 
01257 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
01258 {
01259     int64_t pos = avio_tell(pb);
01260     avio_wb32(pb, 0); /* size */
01261     ffio_wfourcc(pb, "mdia");
01262     mov_write_mdhd_tag(pb, track);
01263     mov_write_hdlr_tag(pb, track);
01264     mov_write_minf_tag(pb, track);
01265     return updateSize(pb, pos);
01266 }
01267 
01268 static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
01269 {
01270     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01271                                       track->timescale, AV_ROUND_UP);
01272     int version = duration < INT32_MAX ? 0 : 1;
01273 
01274     (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
01275     ffio_wfourcc(pb, "tkhd");
01276     avio_w8(pb, version);
01277     avio_wb24(pb, 0xf); /* flags (track enabled) */
01278     if (version == 1) {
01279         avio_wb64(pb, track->time);
01280         avio_wb64(pb, track->time);
01281     } else {
01282         avio_wb32(pb, track->time); /* creation time */
01283         avio_wb32(pb, track->time); /* modification time */
01284     }
01285     avio_wb32(pb, track->trackID); /* track-id */
01286     avio_wb32(pb, 0); /* reserved */
01287     (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
01288 
01289     avio_wb32(pb, 0); /* reserved */
01290     avio_wb32(pb, 0); /* reserved */
01291     avio_wb16(pb, 0); /* layer */
01292     avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
01293     /* Volume, only for audio */
01294     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01295         avio_wb16(pb, 0x0100);
01296     else
01297         avio_wb16(pb, 0);
01298     avio_wb16(pb, 0); /* reserved */
01299 
01300     /* Matrix structure */
01301     avio_wb32(pb, 0x00010000); /* reserved */
01302     avio_wb32(pb, 0x0); /* reserved */
01303     avio_wb32(pb, 0x0); /* reserved */
01304     avio_wb32(pb, 0x0); /* reserved */
01305     avio_wb32(pb, 0x00010000); /* reserved */
01306     avio_wb32(pb, 0x0); /* reserved */
01307     avio_wb32(pb, 0x0); /* reserved */
01308     avio_wb32(pb, 0x0); /* reserved */
01309     avio_wb32(pb, 0x40000000); /* reserved */
01310 
01311     /* Track width and height, for visual only */
01312     if(st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01313               track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
01314         if(track->mode == MODE_MOV) {
01315             avio_wb32(pb, track->enc->width << 16);
01316             avio_wb32(pb, track->height << 16);
01317         } else {
01318             double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01319             if(!sample_aspect_ratio || track->height != track->enc->height)
01320                 sample_aspect_ratio = 1;
01321             avio_wb32(pb, sample_aspect_ratio * track->enc->width*0x10000);
01322             avio_wb32(pb, track->height*0x10000);
01323         }
01324     }
01325     else {
01326         avio_wb32(pb, 0);
01327         avio_wb32(pb, 0);
01328     }
01329     return 0x5c;
01330 }
01331 
01332 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
01333 {
01334     int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
01335                                track->enc->sample_aspect_ratio.den);
01336 
01337     int64_t pos = avio_tell(pb);
01338 
01339     avio_wb32(pb, 0); /* size */
01340     ffio_wfourcc(pb, "tapt");
01341 
01342     avio_wb32(pb, 20);
01343     ffio_wfourcc(pb, "clef");
01344     avio_wb32(pb, 0);
01345     avio_wb32(pb, width << 16);
01346     avio_wb32(pb, track->enc->height << 16);
01347 
01348     avio_wb32(pb, 20);
01349     ffio_wfourcc(pb, "enof");
01350     avio_wb32(pb, 0);
01351     avio_wb32(pb, track->enc->width << 16);
01352     avio_wb32(pb, track->enc->height << 16);
01353 
01354     return updateSize(pb, pos);
01355 }
01356 
01357 // This box seems important for the psp playback ... without it the movie seems to hang
01358 static int mov_write_edts_tag(AVIOContext *pb, MOVTrack *track)
01359 {
01360     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01361                                       track->timescale, AV_ROUND_UP);
01362     int version = duration < INT32_MAX ? 0 : 1;
01363     int entry_size, entry_count, size;
01364     int64_t delay, start_ct = track->cluster[0].cts;
01365     delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
01366                            track->timescale, AV_ROUND_DOWN);
01367     version |= delay < INT32_MAX ? 0 : 1;
01368 
01369     entry_size = (version == 1) ? 20 : 12;
01370     entry_count = 1 + (delay > 0);
01371     size = 24 + entry_count * entry_size;
01372 
01373     /* write the atom data */
01374     avio_wb32(pb, size);
01375     ffio_wfourcc(pb, "edts");
01376     avio_wb32(pb, size - 8);
01377     ffio_wfourcc(pb, "elst");
01378     avio_w8(pb, version);
01379     avio_wb24(pb, 0); /* flags */
01380 
01381     avio_wb32(pb, entry_count);
01382     if (delay > 0) { /* add an empty edit to delay presentation */
01383         if (version == 1) {
01384             avio_wb64(pb, delay);
01385             avio_wb64(pb, -1);
01386         } else {
01387             avio_wb32(pb, delay);
01388             avio_wb32(pb, -1);
01389         }
01390         avio_wb32(pb, 0x00010000);
01391     }
01392 
01393     /* duration */
01394     if (version == 1) {
01395         avio_wb64(pb, duration);
01396         avio_wb64(pb, start_ct);
01397     } else {
01398         avio_wb32(pb, duration);
01399         avio_wb32(pb, start_ct);
01400     }
01401     avio_wb32(pb, 0x00010000);
01402     return size;
01403 }
01404 
01405 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
01406 {
01407     avio_wb32(pb, 20);   // size
01408     ffio_wfourcc(pb, "tref");
01409     avio_wb32(pb, 12);   // size (subatom)
01410     avio_wl32(pb, track->tref_tag);
01411     avio_wb32(pb, track->tref_id);
01412     return 20;
01413 }
01414 
01415 // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)
01416 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
01417 {
01418     avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
01419     ffio_wfourcc(pb, "uuid");
01420     ffio_wfourcc(pb, "USMT");
01421     avio_wb32(pb, 0x21d24fce);
01422     avio_wb32(pb, 0xbb88695c);
01423     avio_wb32(pb, 0xfac9c740);
01424     avio_wb32(pb, 0x1c);     // another size here!
01425     ffio_wfourcc(pb, "MTDT");
01426     avio_wb32(pb, 0x00010012);
01427     avio_wb32(pb, 0x0a);
01428     avio_wb32(pb, 0x55c40000);
01429     avio_wb32(pb, 0x1);
01430     avio_wb32(pb, 0x0);
01431     return 0x34;
01432 }
01433 
01434 static int mov_write_udta_sdp(AVIOContext *pb, AVFormatContext *ctx, int index)
01435 {
01436     char buf[1000] = "";
01437     int len;
01438 
01439     ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0]->codec, NULL, NULL, 0, 0, ctx);
01440     av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);
01441     len = strlen(buf);
01442 
01443     avio_wb32(pb, len + 24);
01444     ffio_wfourcc(pb, "udta");
01445     avio_wb32(pb, len + 16);
01446     ffio_wfourcc(pb, "hnti");
01447     avio_wb32(pb, len + 8);
01448     ffio_wfourcc(pb, "sdp ");
01449     avio_write(pb, buf, len);
01450     return len + 24;
01451 }
01452 
01453 static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
01454                               MOVTrack *track, AVStream *st)
01455 {
01456     int64_t pos = avio_tell(pb);
01457     avio_wb32(pb, 0); /* size */
01458     ffio_wfourcc(pb, "trak");
01459     mov_write_tkhd_tag(pb, track, st);
01460     if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) // EDTS with fragments is tricky as we dont know the duration when its written
01461         mov_write_edts_tag(pb, track);  // PSP Movies and several other cases require edts box
01462     if (track->tref_tag)
01463         mov_write_tref_tag(pb, track);
01464     mov_write_mdia_tag(pb, track);
01465     if (track->mode == MODE_PSP)
01466         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box
01467     if (track->tag == MKTAG('r','t','p',' '))
01468         mov_write_udta_sdp(pb, track->rtp_ctx, track->trackID);
01469     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
01470         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01471         if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
01472             mov_write_tapt_tag(pb, track);
01473     };
01474     return updateSize(pb, pos);
01475 }
01476 
01477 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
01478 {
01479     int i, has_audio = 0, has_video = 0;
01480     int64_t pos = avio_tell(pb);
01481     int audio_profile = mov->iods_audio_profile;
01482     int video_profile = mov->iods_video_profile;
01483     for (i = 0; i < mov->nb_streams; i++) {
01484         if(mov->tracks[i].entry > 0) {
01485             has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
01486             has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
01487         }
01488     }
01489     if (audio_profile < 0)
01490         audio_profile = 0xFF - has_audio;
01491     if (video_profile < 0)
01492         video_profile = 0xFF - has_video;
01493     avio_wb32(pb, 0x0); /* size */
01494     ffio_wfourcc(pb, "iods");
01495     avio_wb32(pb, 0);    /* version & flags */
01496     putDescr(pb, 0x10, 7);
01497     avio_wb16(pb, 0x004f);
01498     avio_w8(pb, 0xff);
01499     avio_w8(pb, 0xff);
01500     avio_w8(pb, audio_profile);
01501     avio_w8(pb, video_profile);
01502     avio_w8(pb, 0xff);
01503     return updateSize(pb, pos);
01504 }
01505 
01506 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
01507 {
01508     avio_wb32(pb, 0x20); /* size */
01509     ffio_wfourcc(pb, "trex");
01510     avio_wb32(pb, 0);   /* version & flags */
01511     avio_wb32(pb, track->trackID); /* track ID */
01512     avio_wb32(pb, 1);   /* default sample description index */
01513     avio_wb32(pb, 0);   /* default sample duration */
01514     avio_wb32(pb, 0);   /* default sample size */
01515     avio_wb32(pb, 0);   /* default sample flags */
01516     return 0;
01517 }
01518 
01519 static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
01520 {
01521     int64_t pos = avio_tell(pb);
01522     int i;
01523     avio_wb32(pb, 0x0); /* size */
01524     ffio_wfourcc(pb, "mvex");
01525     for (i = 0; i < mov->nb_streams; i++)
01526         mov_write_trex_tag(pb, &mov->tracks[i]);
01527     return updateSize(pb, pos);
01528 }
01529 
01530 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
01531 {
01532     int maxTrackID = 1, i;
01533     int64_t maxTrackLenTemp, maxTrackLen = 0;
01534     int version;
01535 
01536     for (i=0; i<mov->nb_streams; i++) {
01537         if(mov->tracks[i].entry > 0) {
01538             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,
01539                                              MOV_TIMESCALE,
01540                                              mov->tracks[i].timescale,
01541                                              AV_ROUND_UP);
01542             if(maxTrackLen < maxTrackLenTemp)
01543                 maxTrackLen = maxTrackLenTemp;
01544             if(maxTrackID < mov->tracks[i].trackID)
01545                 maxTrackID = mov->tracks[i].trackID;
01546         }
01547     }
01548 
01549     version = maxTrackLen < UINT32_MAX ? 0 : 1;
01550     (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
01551     ffio_wfourcc(pb, "mvhd");
01552     avio_w8(pb, version);
01553     avio_wb24(pb, 0); /* flags */
01554     if (version == 1) {
01555         avio_wb64(pb, mov->time);
01556         avio_wb64(pb, mov->time);
01557     } else {
01558         avio_wb32(pb, mov->time); /* creation time */
01559         avio_wb32(pb, mov->time); /* modification time */
01560     }
01561     avio_wb32(pb, MOV_TIMESCALE);
01562     (version == 1) ? avio_wb64(pb, maxTrackLen) : avio_wb32(pb, maxTrackLen); /* duration of longest track */
01563 
01564     avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
01565     avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
01566     avio_wb16(pb, 0); /* reserved */
01567     avio_wb32(pb, 0); /* reserved */
01568     avio_wb32(pb, 0); /* reserved */
01569 
01570     /* Matrix structure */
01571     avio_wb32(pb, 0x00010000); /* reserved */
01572     avio_wb32(pb, 0x0); /* reserved */
01573     avio_wb32(pb, 0x0); /* reserved */
01574     avio_wb32(pb, 0x0); /* reserved */
01575     avio_wb32(pb, 0x00010000); /* reserved */
01576     avio_wb32(pb, 0x0); /* reserved */
01577     avio_wb32(pb, 0x0); /* reserved */
01578     avio_wb32(pb, 0x0); /* reserved */
01579     avio_wb32(pb, 0x40000000); /* reserved */
01580 
01581     avio_wb32(pb, 0); /* reserved (preview time) */
01582     avio_wb32(pb, 0); /* reserved (preview duration) */
01583     avio_wb32(pb, 0); /* reserved (poster time) */
01584     avio_wb32(pb, 0); /* reserved (selection time) */
01585     avio_wb32(pb, 0); /* reserved (selection duration) */
01586     avio_wb32(pb, 0); /* reserved (current time) */
01587     avio_wb32(pb, maxTrackID+1); /* Next track id */
01588     return 0x6c;
01589 }
01590 
01591 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
01592                                      AVFormatContext *s)
01593 {
01594     avio_wb32(pb, 33); /* size */
01595     ffio_wfourcc(pb, "hdlr");
01596     avio_wb32(pb, 0);
01597     avio_wb32(pb, 0);
01598     ffio_wfourcc(pb, "mdir");
01599     ffio_wfourcc(pb, "appl");
01600     avio_wb32(pb, 0);
01601     avio_wb32(pb, 0);
01602     avio_w8(pb, 0);
01603     return 33;
01604 }
01605 
01606 /* helper function to write a data tag with the specified string as data */
01607 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
01608 {
01609     if(long_style){
01610         int size = 16 + strlen(data);
01611         avio_wb32(pb, size); /* size */
01612         ffio_wfourcc(pb, "data");
01613         avio_wb32(pb, 1);
01614         avio_wb32(pb, 0);
01615         avio_write(pb, data, strlen(data));
01616         return size;
01617     }else{
01618         if (!lang)
01619             lang = ff_mov_iso639_to_lang("und", 1);
01620         avio_wb16(pb, strlen(data)); /* string length */
01621         avio_wb16(pb, lang);
01622         avio_write(pb, data, strlen(data));
01623         return strlen(data) + 4;
01624     }
01625 }
01626 
01627 static int mov_write_string_tag(AVIOContext *pb, const char *name, const char *value, int lang, int long_style){
01628     int size = 0;
01629     if (value && value[0]) {
01630         int64_t pos = avio_tell(pb);
01631         avio_wb32(pb, 0); /* size */
01632         ffio_wfourcc(pb, name);
01633         mov_write_string_data_tag(pb, value, lang, long_style);
01634         size= updateSize(pb, pos);
01635     }
01636     return size;
01637 }
01638 
01639 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
01640                                      const char *name, const char *tag,
01641                                      int long_style)
01642 {
01643     int l, lang = 0, len, len2;
01644     AVDictionaryEntry *t, *t2 = NULL;
01645     char tag2[16];
01646 
01647     if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
01648         return 0;
01649 
01650     len = strlen(t->key);
01651     snprintf(tag2, sizeof(tag2), "%s-", tag);
01652     while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
01653         len2 = strlen(t2->key);
01654         if (len2 == len+4 && !strcmp(t->value, t2->value)
01655             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 1)) >= 0) {
01656             lang = l;
01657             break;
01658         }
01659     }
01660     return mov_write_string_tag(pb, name, t->value, lang, long_style);
01661 }
01662 
01663 /* iTunes track number */
01664 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
01665                               AVFormatContext *s)
01666 {
01667     AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
01668     int size = 0, track = t ? atoi(t->value) : 0;
01669     if (track) {
01670         avio_wb32(pb, 32); /* size */
01671         ffio_wfourcc(pb, "trkn");
01672             avio_wb32(pb, 24); /* size */
01673             ffio_wfourcc(pb, "data");
01674             avio_wb32(pb, 0);        // 8 bytes empty
01675             avio_wb32(pb, 0);
01676             avio_wb16(pb, 0);        // empty
01677             avio_wb16(pb, track);    // track number
01678             avio_wb16(pb, 0);        // total track number
01679             avio_wb16(pb, 0);        // empty
01680         size = 32;
01681     }
01682     return size;
01683 }
01684 
01685 /* iTunes meta data list */
01686 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
01687                               AVFormatContext *s)
01688 {
01689     int64_t pos = avio_tell(pb);
01690     avio_wb32(pb, 0); /* size */
01691     ffio_wfourcc(pb, "ilst");
01692     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);
01693     mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);
01694     mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
01695     mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
01696     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);
01697     mov_write_string_metadata(s, pb, "\251day", "date"     , 1);
01698     mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
01699     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);
01700     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);
01701     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
01702     mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
01703     mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);
01704     mov_write_string_metadata(s, pb, "desc",    "description",1);
01705     mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);
01706     mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);
01707     mov_write_string_metadata(s, pb, "tven",    "episode_id",1);
01708     mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);
01709     mov_write_trkn_tag(pb, mov, s);
01710     return updateSize(pb, pos);
01711 }
01712 
01713 /* iTunes meta data tag */
01714 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
01715                               AVFormatContext *s)
01716 {
01717     int size = 0;
01718     int64_t pos = avio_tell(pb);
01719     avio_wb32(pb, 0); /* size */
01720     ffio_wfourcc(pb, "meta");
01721     avio_wb32(pb, 0);
01722     mov_write_itunes_hdlr_tag(pb, mov, s);
01723     mov_write_ilst_tag(pb, mov, s);
01724     size = updateSize(pb, pos);
01725     return size;
01726 }
01727 
01728 static int utf8len(const uint8_t *b)
01729 {
01730     int len=0;
01731     int val;
01732     while(*b){
01733         GET_UTF8(val, *b++, return -1;)
01734         len++;
01735     }
01736     return len;
01737 }
01738 
01739 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
01740 {
01741     int val;
01742     while(*b){
01743         GET_UTF8(val, *b++, return -1;)
01744         avio_wb16(pb, val);
01745     }
01746     avio_wb16(pb, 0x00);
01747     return 0;
01748 }
01749 
01750 static uint16_t language_code(const char *str)
01751 {
01752     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);
01753 }
01754 
01755 static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
01756                                   const char *tag, const char *str)
01757 {
01758     int64_t pos = avio_tell(pb);
01759     AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
01760     if (!t || !utf8len(t->value))
01761         return 0;
01762     avio_wb32(pb, 0);   /* size */
01763     ffio_wfourcc(pb, tag); /* type */
01764     avio_wb32(pb, 0);   /* version + flags */
01765     if (!strcmp(tag, "yrrc"))
01766         avio_wb16(pb, atoi(t->value));
01767     else {
01768         avio_wb16(pb, language_code("eng")); /* language */
01769         avio_write(pb, t->value, strlen(t->value)+1); /* UTF8 string value */
01770         if (!strcmp(tag, "albm") &&
01771             (t = av_dict_get(s->metadata, "track", NULL, 0)))
01772             avio_w8(pb, atoi(t->value));
01773     }
01774     return updateSize(pb, pos);
01775 }
01776 
01777 static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
01778 {
01779     int64_t pos = avio_tell(pb);
01780     int i, nb_chapters = FFMIN(s->nb_chapters, 255);
01781 
01782     avio_wb32(pb, 0);            // size
01783     ffio_wfourcc(pb, "chpl");
01784     avio_wb32(pb, 0x01000000);   // version + flags
01785     avio_wb32(pb, 0);            // unknown
01786     avio_w8(pb, nb_chapters);
01787 
01788     for (i = 0; i < nb_chapters; i++) {
01789         AVChapter *c = s->chapters[i];
01790         AVDictionaryEntry *t;
01791         avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
01792 
01793         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
01794             int len = FFMIN(strlen(t->value), 255);
01795             avio_w8(pb, len);
01796             avio_write(pb, t->value, len);
01797         } else
01798             avio_w8(pb, 0);
01799     }
01800     return updateSize(pb, pos);
01801 }
01802 
01803 static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
01804                               AVFormatContext *s)
01805 {
01806     AVIOContext *pb_buf;
01807     int i, ret, size;
01808     uint8_t *buf;
01809 
01810     for (i = 0; i < s->nb_streams; i++)
01811         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
01812             return 0;
01813         }
01814 
01815     ret = avio_open_dyn_buf(&pb_buf);
01816     if(ret < 0)
01817         return ret;
01818 
01819     if (mov->mode & MODE_3GP) {
01820         mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
01821         mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
01822         mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
01823         mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
01824         mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
01825         mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
01826         mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
01827         mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
01828     } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
01829         mov_write_string_metadata(s, pb_buf, "\251ART", "artist"     , 0);
01830         mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);
01831         mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);
01832         mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);
01833         mov_write_string_metadata(s, pb_buf, "\251day", "date"       , 0);
01834         mov_write_string_metadata(s, pb_buf, "\251swr", "encoder"    , 0);
01835         mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);
01836         mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);
01837         mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);
01838     } else {
01839         /* iTunes meta data */
01840         mov_write_meta_tag(pb_buf, mov, s);
01841     }
01842 
01843     if (s->nb_chapters)
01844         mov_write_chpl_tag(pb_buf, s);
01845 
01846     if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
01847         avio_wb32(pb, size+8);
01848         ffio_wfourcc(pb, "udta");
01849         avio_write(pb, buf, size);
01850     }
01851     av_free(buf);
01852 
01853     return 0;
01854 }
01855 
01856 static void mov_write_psp_udta_tag(AVIOContext *pb,
01857                                   const char *str, const char *lang, int type)
01858 {
01859     int len = utf8len(str)+1;
01860     if(len<=0)
01861         return;
01862     avio_wb16(pb, len*2+10);            /* size */
01863     avio_wb32(pb, type);                /* type */
01864     avio_wb16(pb, language_code(lang)); /* language */
01865     avio_wb16(pb, 0x01);                /* ? */
01866     ascii_to_wc(pb, str);
01867 }
01868 
01869 static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
01870 {
01871     AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
01872     int64_t pos, pos2;
01873 
01874     if (title) {
01875         pos = avio_tell(pb);
01876         avio_wb32(pb, 0); /* size placeholder*/
01877         ffio_wfourcc(pb, "uuid");
01878         ffio_wfourcc(pb, "USMT");
01879         avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
01880         avio_wb32(pb, 0xbb88695c);
01881         avio_wb32(pb, 0xfac9c740);
01882 
01883         pos2 = avio_tell(pb);
01884         avio_wb32(pb, 0); /* size placeholder*/
01885         ffio_wfourcc(pb, "MTDT");
01886         avio_wb16(pb, 4);
01887 
01888         // ?
01889         avio_wb16(pb, 0x0C);                 /* size */
01890         avio_wb32(pb, 0x0B);                 /* type */
01891         avio_wb16(pb, language_code("und")); /* language */
01892         avio_wb16(pb, 0x0);                  /* ? */
01893         avio_wb16(pb, 0x021C);               /* data */
01894 
01895         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);
01896         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);
01897 //        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);
01898         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
01899 
01900         updateSize(pb, pos2);
01901         return updateSize(pb, pos);
01902     }
01903 
01904     return 0;
01905 }
01906 
01907 static void build_chunks(MOVTrack *trk)
01908 {
01909     int i;
01910     MOVIentry *chunk= &trk->cluster[0];
01911     uint64_t chunkSize = chunk->size;
01912     chunk->chunkNum= 1;
01913     trk->chunkCount= 1;
01914     for(i=1; i<trk->entry; i++){
01915         if(chunk->pos + chunkSize == trk->cluster[i].pos &&
01916             chunkSize + trk->cluster[i].size < (1<<20)){
01917             chunkSize             += trk->cluster[i].size;
01918             chunk->samplesInChunk += trk->cluster[i].entries;
01919         }else{
01920             trk->cluster[i].chunkNum = chunk->chunkNum+1;
01921             chunk=&trk->cluster[i];
01922             chunkSize = chunk->size;
01923             trk->chunkCount++;
01924         }
01925     }
01926 }
01927 
01928 static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
01929                               AVFormatContext *s)
01930 {
01931     int i;
01932     int64_t pos = avio_tell(pb);
01933     avio_wb32(pb, 0); /* size placeholder*/
01934     ffio_wfourcc(pb, "moov");
01935 
01936     for (i=0; i<mov->nb_streams; i++) {
01937         if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
01938             continue;
01939 
01940         mov->tracks[i].time = mov->time;
01941         mov->tracks[i].trackID = i+1;
01942 
01943         build_chunks(&mov->tracks[i]);
01944     }
01945 
01946     if (mov->chapter_track)
01947         for (i=0; i<s->nb_streams; i++) {
01948             mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
01949             mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].trackID;
01950         }
01951     for (i = 0; i < mov->nb_streams; i++) {
01952         if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
01953             mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
01954             mov->tracks[i].tref_id =
01955                 mov->tracks[mov->tracks[i].src_track].trackID;
01956         }
01957     }
01958 
01959     mov_write_mvhd_tag(pb, mov);
01960     if (mov->mode != MODE_MOV && !mov->iods_skip)
01961         mov_write_iods_tag(pb, mov);
01962     for (i=0; i<mov->nb_streams; i++) {
01963         if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
01964             mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
01965         }
01966     }
01967     if (mov->flags & FF_MOV_FLAG_FRAGMENT)
01968         mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
01969 
01970     if (mov->mode == MODE_PSP)
01971         mov_write_uuidusmt_tag(pb, s);
01972     else
01973         mov_write_udta_tag(pb, mov, s);
01974 
01975     return updateSize(pb, pos);
01976 }
01977 
01978 static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)
01979 {
01980     avio_wb32(pb, 16);
01981     ffio_wfourcc(pb, "mfhd");
01982     avio_wb32(pb, 0);
01983     avio_wb32(pb, mov->fragments);
01984     return 0;
01985 }
01986 
01987 static int mov_write_tfhd_tag(AVIOContext *pb, MOVTrack *track,
01988                               int64_t moof_offset)
01989 {
01990     int64_t pos = avio_tell(pb);
01991     /* default-sample-size + default-sample-duration + base-data-offset */
01992     uint32_t flags = 0x19;
01993     if (!track->entry) {
01994         flags |= 0x010000; /* duration-is-empty */
01995     } else {
01996         flags |= 0x20; /* default-sample-flags-present */
01997     }
01998 
01999     /* Don't set a default sample size when creating data for silverlight,
02000      * the player refuses to play files with that set. */
02001     if (track->mode == MODE_ISM)
02002         flags &= ~0x10;
02003 
02004     avio_wb32(pb, 0); /* size placeholder */
02005     ffio_wfourcc(pb, "tfhd");
02006     avio_w8(pb, 0); /* version */
02007     avio_wb24(pb, flags);
02008 
02009     avio_wb32(pb, track->trackID); /* track-id */
02010     if (flags & 0x01)
02011         avio_wb64(pb, moof_offset);
02012     if (flags & 0x08) {
02013         track->default_duration = track->audio_vbr ? track->enc->frame_size : 1;
02014         avio_wb32(pb, track->default_duration);
02015     }
02016     if (flags & 0x10) {
02017         track->default_size = track->entry ? track->cluster[0].size : 1;
02018         avio_wb32(pb, track->default_size);
02019     } else
02020         track->default_size = -1;
02021 
02022     if (flags & 0x20) {
02023         track->default_sample_flags =
02024             track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
02025             0x01010000 : 0x02000000;
02026         avio_wb32(pb, track->default_sample_flags);
02027     }
02028 
02029     return updateSize(pb, pos);
02030 }
02031 
02032 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
02033 {
02034     return entry->flags & MOV_SYNC_SAMPLE ? 0x02000000 : 0x01010000;
02035 }
02036 
02037 static int mov_write_trun_tag(AVIOContext *pb, MOVTrack *track)
02038 {
02039     int64_t pos = avio_tell(pb);
02040     uint32_t flags = 1; /* data-offset-present */
02041     int i;
02042 
02043     for (i = 0; i < track->entry; i++) {
02044         int64_t duration = i + 1 == track->entry ?
02045             track->trackDuration - track->cluster[i].dts + track->start_dts :
02046             track->cluster[i + 1].dts - track->cluster[i].dts;
02047         if (duration != track->default_duration)
02048             flags |= 0x100; /* sample-duration-present */
02049         if (track->cluster[i].size != track->default_size)
02050             flags |= 0x200; /* sample-size-present */
02051         if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
02052             flags |= 0x400; /* sample-flags-present */
02053     }
02054     if (!(flags & 0x400))
02055         flags |= 0x4; /* first-sample-flags-present */
02056     if (track->flags & MOV_TRACK_CTTS)
02057         flags |= 0x800; /* sample-composition-time-offsets-present */
02058 
02059     avio_wb32(pb, 0); /* size placeholder */
02060     ffio_wfourcc(pb, "trun");
02061     avio_w8(pb, 0); /* version */
02062     avio_wb24(pb, flags);
02063 
02064     avio_wb32(pb, track->entry); /* sample count */
02065     track->moof_size_offset = avio_tell(pb);
02066     avio_wb32(pb, 0); /* data offset */
02067     if (flags & 0x4) /* first sample flags */
02068         avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
02069 
02070     for (i = 0; i < track->entry; i++) {
02071         int64_t duration = i + 1 == track->entry ?
02072             track->trackDuration - track->cluster[i].dts + track->start_dts :
02073             track->cluster[i + 1].dts - track->cluster[i].dts;
02074         if (flags & 0x100)
02075             avio_wb32(pb, duration);
02076         if (flags & 0x200)
02077             avio_wb32(pb, track->cluster[i].size);
02078         if (flags & 0x400)
02079             avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
02080         if (flags & 0x800)
02081             avio_wb32(pb, track->cluster[i].cts);
02082     }
02083 
02084     return updateSize(pb, pos);
02085 }
02086 
02087 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
02088 {
02089     int64_t pos = avio_tell(pb);
02090     const uint8_t uuid[] = {
02091         0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
02092         0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
02093     };
02094 
02095     avio_wb32(pb, 0); /* size placeholder */
02096     ffio_wfourcc(pb, "uuid");
02097     avio_write(pb, uuid, sizeof(uuid));
02098     avio_w8(pb, 1);
02099     avio_wb24(pb, 0);
02100     avio_wb64(pb, track->frag_start);
02101     avio_wb64(pb, track->start_dts + track->trackDuration -
02102                   track->cluster[0].dts);
02103 
02104     return updateSize(pb, pos);
02105 }
02106 
02107 static int mov_write_tfrf_tag(AVIOContext *pb, MOVMuxContext *mov,
02108                               MOVTrack *track, int entry)
02109 {
02110     int n = track->nb_frag_info - 1 - entry, i;
02111     int size = 8 + 16 + 4 + 1 + 16*n;
02112     const uint8_t uuid[] = {
02113         0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
02114         0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
02115     };
02116 
02117     if (entry < 0)
02118         return 0;
02119 
02120     avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
02121     avio_wb32(pb, size);
02122     ffio_wfourcc(pb, "uuid");
02123     avio_write(pb, uuid, sizeof(uuid));
02124     avio_w8(pb, 1);
02125     avio_wb24(pb, 0);
02126     avio_w8(pb, n);
02127     for (i = 0; i < n; i++) {
02128         int index = entry + 1 + i;
02129         avio_wb64(pb, track->frag_info[index].time);
02130         avio_wb64(pb, track->frag_info[index].duration);
02131     }
02132     if (n < mov->ism_lookahead) {
02133         int free_size = 16*(mov->ism_lookahead - n);
02134         avio_wb32(pb, free_size);
02135         ffio_wfourcc(pb, "free");
02136         for (i = 0; i < free_size - 8; i++)
02137             avio_w8(pb, 0);
02138     }
02139 
02140     return 0;
02141 }
02142 
02143 static int mov_write_tfrf_tags(AVIOContext *pb, MOVMuxContext *mov,
02144                                MOVTrack *track)
02145 {
02146     int64_t pos = avio_tell(pb);
02147     int i;
02148     for (i = 0; i < mov->ism_lookahead; i++) {
02149         /* Update the tfrf tag for the last ism_lookahead fragments,
02150          * nb_frag_info - 1 is the next fragment to be written. */
02151         mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
02152     }
02153     avio_seek(pb, pos, SEEK_SET);
02154     return 0;
02155 }
02156 
02157 static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,
02158                               MOVTrack *track, int64_t moof_offset)
02159 {
02160     int64_t pos = avio_tell(pb);
02161     avio_wb32(pb, 0); /* size placeholder */
02162     ffio_wfourcc(pb, "traf");
02163 
02164     mov_write_tfhd_tag(pb, track, moof_offset);
02165     mov_write_trun_tag(pb, track);
02166     if (mov->mode == MODE_ISM) {
02167         mov_write_tfxd_tag(pb, track);
02168 
02169         if (mov->ism_lookahead) {
02170             int i, size = 16 + 4 + 1 + 16*mov->ism_lookahead;
02171 
02172             track->tfrf_offset = avio_tell(pb);
02173             avio_wb32(pb, 8 + size);
02174             ffio_wfourcc(pb, "free");
02175             for (i = 0; i < size; i++)
02176                 avio_w8(pb, 0);
02177         }
02178     }
02179 
02180     return updateSize(pb, pos);
02181 }
02182 
02183 static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks)
02184 {
02185     int64_t pos = avio_tell(pb), end;
02186     int i, moof_size;
02187 
02188     avio_wb32(pb, 0); /* size placeholder */
02189     ffio_wfourcc(pb, "moof");
02190 
02191     mov_write_mfhd_tag(pb, mov);
02192     for (i = 0; i < mov->nb_streams; i++) {
02193         MOVTrack *track = &mov->tracks[i];
02194         if (tracks >= 0 && i != tracks)
02195             continue;
02196         if (!track->entry)
02197             continue;
02198         mov_write_traf_tag(pb, mov, track, pos);
02199     }
02200 
02201     end = avio_tell(pb);
02202     moof_size = end - pos;
02203     for (i = 0; i < mov->nb_streams; i++) {
02204         MOVTrack *track = &mov->tracks[i];
02205         if (tracks >= 0 && i != tracks)
02206             continue;
02207         if (!track->entry)
02208             continue;
02209         avio_seek(pb, mov->tracks[i].moof_size_offset, SEEK_SET);
02210         avio_wb32(pb, moof_size + 8 + mov->tracks[i].data_offset);
02211     }
02212     avio_seek(pb, end, SEEK_SET);
02213 
02214     return updateSize(pb, pos);
02215 }
02216 
02217 static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
02218 {
02219     int64_t pos = avio_tell(pb);
02220     int i;
02221 
02222     avio_wb32(pb, 0); /* size placeholder */
02223     ffio_wfourcc(pb, "tfra");
02224     avio_w8(pb, 1); /* version */
02225     avio_wb24(pb, 0);
02226 
02227     avio_wb32(pb, track->trackID);
02228     avio_wb32(pb, 0); /* length of traf/trun/sample num */
02229     avio_wb32(pb, track->nb_frag_info);
02230     for (i = 0; i < track->nb_frag_info; i++) {
02231         avio_wb64(pb, track->frag_info[i].time);
02232         avio_wb64(pb, track->frag_info[i].offset);
02233         avio_w8(pb, 1); /* traf number */
02234         avio_w8(pb, 1); /* trun number */
02235         avio_w8(pb, 1); /* sample number */
02236     }
02237 
02238     return updateSize(pb, pos);
02239 }
02240 
02241 static int mov_write_mfra_tag(AVIOContext *pb, MOVMuxContext *mov)
02242 {
02243     int64_t pos = avio_tell(pb);
02244     int i;
02245 
02246     avio_wb32(pb, 0); /* size placeholder */
02247     ffio_wfourcc(pb, "mfra");
02248 
02249     for (i = 0; i < mov->nb_streams; i++) {
02250         MOVTrack *track = &mov->tracks[i];
02251         if (track->nb_frag_info)
02252             mov_write_tfra_tag(pb, track);
02253     }
02254 
02255     avio_wb32(pb, 16);
02256     ffio_wfourcc(pb, "mfro");
02257     avio_wb32(pb, 0); /* version + flags */
02258     avio_wb32(pb, avio_tell(pb) + 4 - pos);
02259 
02260     return updateSize(pb, pos);
02261 }
02262 
02263 static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
02264 {
02265     avio_wb32(pb, 8);    // placeholder for extended size field (64 bit)
02266     ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
02267 
02268     mov->mdat_pos = avio_tell(pb);
02269     avio_wb32(pb, 0); /* size placeholder*/
02270     ffio_wfourcc(pb, "mdat");
02271     return 0;
02272 }
02273 
02274 /* TODO: This needs to be more general */
02275 static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
02276 {
02277     MOVMuxContext *mov = s->priv_data;
02278     int64_t pos = avio_tell(pb);
02279     int has_h264 = 0, has_video = 0;
02280     int minor = 0x200;
02281     int i;
02282 
02283     for (i = 0; i < s->nb_streams; i++) {
02284         AVStream *st = s->streams[i];
02285         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
02286             has_video = 1;
02287         if (st->codec->codec_id == CODEC_ID_H264)
02288             has_h264 = 1;
02289     }
02290 
02291     avio_wb32(pb, 0); /* size */
02292     ffio_wfourcc(pb, "ftyp");
02293 
02294     if (mov->mode == MODE_3GP) {
02295         ffio_wfourcc(pb, has_h264 ? "3gp6"  : "3gp4");
02296         minor =     has_h264 ?   0x100 :   0x200;
02297     } else if (mov->mode & MODE_3G2) {
02298         ffio_wfourcc(pb, has_h264 ? "3g2b"  : "3g2a");
02299         minor =     has_h264 ? 0x20000 : 0x10000;
02300     }else if (mov->mode == MODE_PSP)
02301         ffio_wfourcc(pb, "MSNV");
02302     else if (mov->mode == MODE_MP4)
02303         ffio_wfourcc(pb, "isom");
02304     else if (mov->mode == MODE_IPOD)
02305         ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
02306     else if (mov->mode == MODE_ISM)
02307         ffio_wfourcc(pb, "isml");
02308     else
02309         ffio_wfourcc(pb, "qt  ");
02310 
02311     avio_wb32(pb, minor);
02312 
02313     if(mov->mode == MODE_MOV)
02314         ffio_wfourcc(pb, "qt  ");
02315     else if (mov->mode == MODE_ISM) {
02316         ffio_wfourcc(pb, "piff");
02317         ffio_wfourcc(pb, "iso2");
02318     } else {
02319         ffio_wfourcc(pb, "isom");
02320         ffio_wfourcc(pb, "iso2");
02321         if(has_h264)
02322             ffio_wfourcc(pb, "avc1");
02323     }
02324 
02325     if (mov->mode == MODE_3GP)
02326         ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
02327     else if (mov->mode & MODE_3G2)
02328         ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
02329     else if (mov->mode == MODE_PSP)
02330         ffio_wfourcc(pb, "MSNV");
02331     else if (mov->mode == MODE_MP4)
02332         ffio_wfourcc(pb, "mp41");
02333     return updateSize(pb, pos);
02334 }
02335 
02336 static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
02337 {
02338     AVCodecContext *VideoCodec = s->streams[0]->codec;
02339     AVCodecContext *AudioCodec = s->streams[1]->codec;
02340     int AudioRate = AudioCodec->sample_rate;
02341     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);
02342     int audio_kbitrate= AudioCodec->bit_rate / 1000;
02343     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);
02344 
02345     avio_wb32(pb, 0x94); /* size */
02346     ffio_wfourcc(pb, "uuid");
02347     ffio_wfourcc(pb, "PROF");
02348 
02349     avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
02350     avio_wb32(pb, 0xbb88695c);
02351     avio_wb32(pb, 0xfac9c740);
02352 
02353     avio_wb32(pb, 0x0);  /* ? */
02354     avio_wb32(pb, 0x3);  /* 3 sections ? */
02355 
02356     avio_wb32(pb, 0x14); /* size */
02357     ffio_wfourcc(pb, "FPRF");
02358     avio_wb32(pb, 0x0);  /* ? */
02359     avio_wb32(pb, 0x0);  /* ? */
02360     avio_wb32(pb, 0x0);  /* ? */
02361 
02362     avio_wb32(pb, 0x2c);  /* size */
02363     ffio_wfourcc(pb, "APRF");/* audio */
02364     avio_wb32(pb, 0x0);
02365     avio_wb32(pb, 0x2);   /* TrackID */
02366     ffio_wfourcc(pb, "mp4a");
02367     avio_wb32(pb, 0x20f);
02368     avio_wb32(pb, 0x0);
02369     avio_wb32(pb, audio_kbitrate);
02370     avio_wb32(pb, audio_kbitrate);
02371     avio_wb32(pb, AudioRate);
02372     avio_wb32(pb, AudioCodec->channels);
02373 
02374     avio_wb32(pb, 0x34);  /* size */
02375     ffio_wfourcc(pb, "VPRF");   /* video */
02376     avio_wb32(pb, 0x0);
02377     avio_wb32(pb, 0x1);    /* TrackID */
02378     if (VideoCodec->codec_id == CODEC_ID_H264) {
02379         ffio_wfourcc(pb, "avc1");
02380         avio_wb16(pb, 0x014D);
02381         avio_wb16(pb, 0x0015);
02382     } else {
02383         ffio_wfourcc(pb, "mp4v");
02384         avio_wb16(pb, 0x0000);
02385         avio_wb16(pb, 0x0103);
02386     }
02387     avio_wb32(pb, 0x0);
02388     avio_wb32(pb, video_kbitrate);
02389     avio_wb32(pb, video_kbitrate);
02390     avio_wb32(pb, FrameRate);
02391     avio_wb32(pb, FrameRate);
02392     avio_wb16(pb, VideoCodec->width);
02393     avio_wb16(pb, VideoCodec->height);
02394     avio_wb32(pb, 0x010001); /* ? */
02395 }
02396 
02397 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
02398 {
02399     uint32_t c = -1;
02400     int i, closed_gop = 0;
02401 
02402     for (i = 0; i < pkt->size - 4; i++) {
02403         c = (c<<8) + pkt->data[i];
02404         if (c == 0x1b8) { // gop
02405             closed_gop = pkt->data[i+4]>>6 & 0x01;
02406         } else if (c == 0x100) { // pic
02407             int temp_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
02408             if (!temp_ref || closed_gop) // I picture is not reordered
02409                 *flags = MOV_SYNC_SAMPLE;
02410             else
02411                 *flags = MOV_PARTIAL_SYNC_SAMPLE;
02412             break;
02413         }
02414     }
02415     return 0;
02416 }
02417 
02418 static int mov_flush_fragment(AVFormatContext *s)
02419 {
02420     MOVMuxContext *mov = s->priv_data;
02421     int i, first_track = -1;
02422     int64_t mdat_size = 0;
02423 
02424     if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
02425         return 0;
02426 
02427     if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
02428         int64_t pos = avio_tell(s->pb);
02429 
02430         for (i = 0; i < mov->nb_streams; i++)
02431             if (!mov->tracks[i].entry)
02432                 break;
02433         /* Don't write the initial moov unless all tracks have data */
02434         if (i < mov->nb_streams)
02435             return 0;
02436         avio_seek(s->pb, mov->mdat_pos, SEEK_SET);
02437         avio_wb32(s->pb, mov->mdat_size + 8);
02438         avio_seek(s->pb, pos, SEEK_SET);
02439         mov_write_moov_tag(s->pb, mov, s);
02440         mov->fragments++;
02441         mov->mdat_size = 0;
02442         for (i = 0; i < mov->nb_streams; i++) {
02443             if (mov->tracks[i].entry)
02444                 mov->tracks[i].frag_start += mov->tracks[i].start_dts +
02445                                              mov->tracks[i].trackDuration -
02446                                              mov->tracks[i].cluster[0].dts;
02447             mov->tracks[i].entry = 0;
02448         }
02449         return 0;
02450     }
02451 
02452     for (i = 0; i < mov->nb_streams; i++) {
02453         MOVTrack *track = &mov->tracks[i];
02454         if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
02455             track->data_offset = 0;
02456         else
02457             track->data_offset = mdat_size;
02458         if (!track->mdat_buf)
02459             continue;
02460         mdat_size += avio_tell(track->mdat_buf);
02461         if (first_track < 0)
02462             first_track = i;
02463     }
02464 
02465     if (!mdat_size)
02466         return 0;
02467 
02468     for (i = 0; i < mov->nb_streams; i++) {
02469         MOVTrack *track = &mov->tracks[i];
02470         int buf_size, write_moof = 1, moof_tracks = -1;
02471         uint8_t *buf;
02472         int64_t duration = 0;
02473 
02474         if (track->entry)
02475             duration = track->start_dts + track->trackDuration -
02476                        track->cluster[0].dts;
02477         if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
02478             if (!track->mdat_buf)
02479                 continue;
02480             mdat_size = avio_tell(track->mdat_buf);
02481             moof_tracks = i;
02482         } else {
02483             write_moof = i == first_track;
02484         }
02485 
02486         if (write_moof) {
02487             MOVFragmentInfo *info;
02488             track->nb_frag_info++;
02489             track->frag_info = av_realloc(track->frag_info,
02490                                           sizeof(*track->frag_info) *
02491                                           track->nb_frag_info);
02492             info = &track->frag_info[track->nb_frag_info - 1];
02493             info->offset   = avio_tell(s->pb);
02494             info->time     = mov->tracks[i].frag_start;
02495             info->duration = duration;
02496             mov_write_tfrf_tags(s->pb, mov, track);
02497 
02498             mov_write_moof_tag(s->pb, mov, moof_tracks);
02499             info->tfrf_offset = track->tfrf_offset;
02500             mov->fragments++;
02501 
02502             avio_wb32(s->pb, mdat_size + 8);
02503             ffio_wfourcc(s->pb, "mdat");
02504         }
02505 
02506         if (track->entry)
02507             track->frag_start += duration;
02508         track->entry = 0;
02509         if (!track->mdat_buf)
02510             continue;
02511         buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
02512         track->mdat_buf = NULL;
02513 
02514         avio_write(s->pb, buf, buf_size);
02515         av_free(buf);
02516     }
02517 
02518     mov->mdat_size = 0;
02519 
02520     return 0;
02521 }
02522 
02523 static int mov_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
02524 {
02525     MOVMuxContext *mov = s->priv_data;
02526     AVIOContext *pb = s->pb;
02527     MOVTrack *trk = &mov->tracks[pkt->stream_index];
02528     AVCodecContext *enc = trk->enc;
02529     unsigned int samplesInChunk = 0;
02530     int size= pkt->size;
02531     uint8_t *reformatted_data = NULL;
02532 
02533     if (!s->pb->seekable) return 0; /* Can't handle that */
02534     if (!size) return 0; /* Discard 0 sized packets */
02535 
02536     if ((mov->max_fragment_duration && trk->entry &&
02537          av_rescale_q(pkt->dts - trk->cluster[0].dts,
02538                       s->streams[pkt->stream_index]->time_base,
02539                       AV_TIME_BASE_Q) >= mov->max_fragment_duration) ||
02540          (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
02541          (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
02542           enc->codec_type == AVMEDIA_TYPE_VIDEO &&
02543           trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
02544         mov_flush_fragment(s);
02545     }
02546 
02547     if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->fragments > 0) {
02548         if (!trk->mdat_buf) {
02549             int ret;
02550             if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
02551                 return ret;
02552         }
02553         pb = trk->mdat_buf;
02554     }
02555 
02556     if (enc->codec_id == CODEC_ID_AMR_NB) {
02557         /* We must find out how many AMR blocks there are in one packet */
02558         static uint16_t packed_size[16] =
02559             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
02560         int len = 0;
02561 
02562         while (len < size && samplesInChunk < 100) {
02563             len += packed_size[(pkt->data[len] >> 3) & 0x0F];
02564             samplesInChunk++;
02565         }
02566         if(samplesInChunk > 1){
02567             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
02568             return -1;
02569         }
02570     } else if (enc->codec_id == CODEC_ID_ADPCM_MS ||
02571                enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
02572         samplesInChunk = enc->frame_size;
02573     } else if (trk->sampleSize)
02574         samplesInChunk = size/trk->sampleSize;
02575     else
02576         samplesInChunk = 1;
02577 
02578     /* copy extradata if it exists */
02579     if (trk->vosLen == 0 && enc->extradata_size > 0) {
02580         trk->vosLen = enc->extradata_size;
02581         trk->vosData = av_malloc(trk->vosLen);
02582         memcpy(trk->vosData, enc->extradata, trk->vosLen);
02583     }
02584 
02585     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {
02586         /* from x264 or from bytestream h264 */
02587         /* nal reformating needed */
02588         if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
02589             ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
02590                                        &size);
02591             avio_write(pb, reformatted_data, size);
02592         } else {
02593             size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
02594         }
02595     } else if (enc->codec_id == CODEC_ID_AAC && pkt->size > 2 &&
02596                (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
02597         av_log(s, AV_LOG_ERROR, "malformated aac bitstream, use -absf aac_adtstoasc\n");
02598         return -1;
02599     } else {
02600         avio_write(pb, pkt->data, size);
02601     }
02602 
02603     if ((enc->codec_id == CODEC_ID_DNXHD ||
02604          enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {
02605         /* copy frame to create needed atoms */
02606         trk->vosLen = size;
02607         trk->vosData = av_malloc(size);
02608         if (!trk->vosData)
02609             return AVERROR(ENOMEM);
02610         memcpy(trk->vosData, pkt->data, size);
02611     }
02612 
02613     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {
02614         trk->cluster = av_realloc_f(trk->cluster, sizeof(*trk->cluster), (trk->entry + MOV_INDEX_CLUSTER_SIZE));
02615         if (!trk->cluster)
02616             return -1;
02617     }
02618 
02619     trk->cluster[trk->entry].pos = avio_tell(pb) - size;
02620     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
02621     trk->cluster[trk->entry].chunkNum = 0;
02622     trk->cluster[trk->entry].size = size;
02623     trk->cluster[trk->entry].entries = samplesInChunk;
02624     trk->cluster[trk->entry].dts = pkt->dts;
02625     if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
02626         /* First packet of a new fragment. We already wrote the duration
02627          * of the last packet of the previous fragment based on trackDuration,
02628          * which might not exactly match our dts. Therefore adjust the dts
02629          * of this packet to be what the previous packets duration implies. */
02630         trk->cluster[trk->entry].dts = trk->start_dts + trk->trackDuration;
02631     }
02632     if (trk->start_dts == AV_NOPTS_VALUE)
02633         trk->start_dts = pkt->dts;
02634     trk->trackDuration = pkt->dts - trk->start_dts + pkt->duration;
02635 
02636     if (pkt->pts == AV_NOPTS_VALUE) {
02637         av_log(s, AV_LOG_WARNING, "pts has no value\n");
02638         pkt->pts = pkt->dts;
02639     }
02640     if (pkt->dts != pkt->pts)
02641         trk->flags |= MOV_TRACK_CTTS;
02642     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
02643     trk->cluster[trk->entry].flags = 0;
02644     if (pkt->flags & AV_PKT_FLAG_KEY) {
02645         if (mov->mode == MODE_MOV && enc->codec_id == CODEC_ID_MPEG2VIDEO &&
02646             trk->entry > 0) { // force sync sample for the first key frame
02647             mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
02648             if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
02649                 trk->flags |= MOV_TRACK_STPS;
02650         } else {
02651             trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
02652         }
02653         if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
02654             trk->hasKeyframes++;
02655     }
02656     trk->entry++;
02657     trk->sampleCount += samplesInChunk;
02658     mov->mdat_size += size;
02659 
02660     avio_flush(pb);
02661 
02662     if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
02663         ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
02664                                  reformatted_data, size);
02665     av_free(reformatted_data);
02666     return 0;
02667 }
02668 
02669 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
02670 {
02671     if (!pkt) {
02672         mov_flush_fragment(s);
02673         return 1;
02674     } else {
02675         return mov_write_packet_internal(s, pkt);
02676     }
02677 }
02678 
02679 // QuickTime chapters involve an additional text track with the chapter names
02680 // as samples, and a tref pointing from the other tracks to the chapter one.
02681 static void mov_create_chapter_track(AVFormatContext *s, int tracknum)
02682 {
02683     MOVMuxContext *mov = s->priv_data;
02684     MOVTrack *track = &mov->tracks[tracknum];
02685     AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
02686     int i, len;
02687 
02688     track->mode = mov->mode;
02689     track->tag = MKTAG('t','e','x','t');
02690     track->timescale = MOV_TIMESCALE;
02691     track->enc = avcodec_alloc_context3(NULL);
02692     track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
02693 
02694     for (i = 0; i < s->nb_chapters; i++) {
02695         AVChapter *c = s->chapters[i];
02696         AVDictionaryEntry *t;
02697 
02698         int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
02699         pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
02700         pkt.duration = end - pkt.dts;
02701 
02702         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
02703             len = strlen(t->value);
02704             pkt.size = len+2;
02705             pkt.data = av_malloc(pkt.size);
02706             AV_WB16(pkt.data, len);
02707             memcpy(pkt.data+2, t->value, len);
02708             ff_mov_write_packet(s, &pkt);
02709             av_freep(&pkt.data);
02710         }
02711     }
02712 }
02713 
02714 static int mov_write_header(AVFormatContext *s)
02715 {
02716     AVIOContext *pb = s->pb;
02717     MOVMuxContext *mov = s->priv_data;
02718     AVDictionaryEntry *t;
02719     int i, hint_track = 0;
02720 
02721     if (!s->pb->seekable) {
02722         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
02723         return -1;
02724     }
02725 
02726     /* Default mode == MP4 */
02727     mov->mode = MODE_MP4;
02728 
02729     if (s->oformat != NULL) {
02730         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
02731         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
02732         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
02733         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
02734         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
02735         else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;
02736 
02737         mov_write_ftyp_tag(pb,s);
02738         if (mov->mode == MODE_PSP) {
02739             if (s->nb_streams != 2) {
02740                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
02741                 return -1;
02742             }
02743             mov_write_uuidprof_tag(pb,s);
02744         }
02745     }
02746 
02747     mov->nb_streams = s->nb_streams;
02748     if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)
02749         mov->chapter_track = mov->nb_streams++;
02750 
02751 #if FF_API_FLAG_RTP_HINT
02752     if (s->flags & AVFMT_FLAG_RTP_HINT) {
02753         av_log(s, AV_LOG_WARNING, "The RTP_HINT flag is deprecated, enable it "
02754                                   "via the -movflags rtphint muxer option "
02755                                   "instead.\n");
02756         mov->flags |= FF_MOV_FLAG_RTP_HINT;
02757     }
02758 #endif
02759     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02760         /* Add hint tracks for each audio and video stream */
02761         hint_track = mov->nb_streams;
02762         for (i = 0; i < s->nb_streams; i++) {
02763             AVStream *st = s->streams[i];
02764             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02765                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02766                 mov->nb_streams++;
02767             }
02768         }
02769     }
02770 
02771     mov->tracks = av_mallocz(mov->nb_streams*sizeof(*mov->tracks));
02772     if (!mov->tracks)
02773         return AVERROR(ENOMEM);
02774 
02775     for(i=0; i<s->nb_streams; i++){
02776         AVStream *st= s->streams[i];
02777         MOVTrack *track= &mov->tracks[i];
02778         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
02779 
02780         track->enc = st->codec;
02781         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
02782         if (track->language < 0)
02783             track->language = 0;
02784         track->mode = mov->mode;
02785         track->tag = mov_find_codec_tag(s, track);
02786         if (!track->tag) {
02787             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
02788                    "codec not currently supported in container\n", i);
02789             goto error;
02790         }
02791         /* If hinting of this track is enabled by a later hint track,
02792          * this is updated. */
02793         track->hint_track = -1;
02794         track->start_dts = AV_NOPTS_VALUE;
02795         if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
02796             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
02797                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
02798                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
02799                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
02800                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
02801                     goto error;
02802                 }
02803                 track->height = track->tag>>24 == 'n' ? 486 : 576;
02804             }
02805             track->timescale = st->codec->time_base.den;
02806             if (track->mode == MODE_MOV && track->timescale > 100000)
02807                 av_log(s, AV_LOG_WARNING,
02808                        "WARNING codec timebase is very high. If duration is too long,\n"
02809                        "file may not be playable by quicktime. Specify a shorter timebase\n"
02810                        "or choose different container.\n");
02811         }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
02812             track->timescale = st->codec->sample_rate;
02813             if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {
02814                 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);
02815                 goto error;
02816             }else if(st->codec->codec_id == CODEC_ID_ADPCM_MS ||
02817                      st->codec->codec_id == CODEC_ID_ADPCM_IMA_WAV){
02818                 if (!st->codec->block_align) {
02819                     av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
02820                     goto error;
02821                 }
02822                 track->sampleSize = st->codec->block_align;
02823             }else if(st->codec->frame_size > 1){ /* assume compressed audio */
02824                 track->audio_vbr = 1;
02825             }else{
02826                 st->codec->frame_size = 1;
02827                 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
02828             }
02829             if (track->mode != MODE_MOV) {
02830                 if (track->timescale > UINT16_MAX) {
02831                     av_log(s, AV_LOG_ERROR, "track %d: output format does not support "
02832                            "sample rate %dhz\n", i, track->timescale);
02833                     goto error;
02834                 }
02835                 if (track->enc->codec_id == CODEC_ID_MP3 && track->timescale < 16000) {
02836                     av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
02837                            i, track->enc->sample_rate);
02838                     goto error;
02839                 }
02840             }
02841         }else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){
02842             track->timescale = st->codec->time_base.den;
02843         }
02844         if (!track->height)
02845             track->height = st->codec->height;
02846         /* The ism specific timescale isn't mandatory, but is assumed by
02847          * some tools, such as mp4split. */
02848         if (mov->mode == MODE_ISM)
02849             track->timescale = 10000000;
02850 
02851         avpriv_set_pts_info(st, 64, 1, track->timescale);
02852 
02853         /* copy extradata if it exists */
02854         if (st->codec->extradata_size) {
02855             track->vosLen  = st->codec->extradata_size;
02856             track->vosData = av_malloc(track->vosLen);
02857             memcpy(track->vosData, st->codec->extradata, track->vosLen);
02858         }
02859     }
02860 
02861     if (mov->mode == MODE_ISM) {
02862         /* If no fragmentation options have been set, set a default. */
02863         if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |
02864                             FF_MOV_FLAG_FRAG_CUSTOM)) &&
02865             !mov->max_fragment_duration && !mov->max_fragment_size)
02866             mov->max_fragment_duration = 5000000;
02867         mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF;
02868     }
02869 
02870     if(mov->reserved_moov_size){
02871         mov->reserved_moov_pos= avio_tell(pb);
02872         avio_skip(pb, mov->reserved_moov_size);
02873     }
02874 
02875     /* Set the FRAGMENT flag if any of the fragmentation methods are
02876      * enabled. */
02877     if (mov->max_fragment_duration || mov->max_fragment_size ||
02878         mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |
02879                       FF_MOV_FLAG_FRAG_KEYFRAME |
02880                       FF_MOV_FLAG_FRAG_CUSTOM))
02881         mov->flags |= FF_MOV_FLAG_FRAGMENT;
02882 
02883     if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV))
02884         mov_write_mdat_tag(pb, mov);
02885 
02886 #if FF_API_TIMESTAMP
02887     if (s->timestamp)
02888         mov->time = s->timestamp;
02889     else
02890 #endif
02891     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
02892         mov->time = ff_iso8601_to_unix_time(t->value);
02893     if (mov->time)
02894         mov->time += 0x7C25B080; // 1970 based -> 1904 based
02895 
02896     if (mov->chapter_track)
02897         mov_create_chapter_track(s, mov->chapter_track);
02898 
02899     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02900         /* Initialize the hint tracks for each audio and video stream */
02901         for (i = 0; i < s->nb_streams; i++) {
02902             AVStream *st = s->streams[i];
02903             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02904                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02905                 ff_mov_init_hinting(s, hint_track, i);
02906                 hint_track++;
02907             }
02908         }
02909     }
02910 
02911     avio_flush(pb);
02912 
02913     if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
02914         mov_write_moov_tag(pb, mov, s);
02915         mov->fragments++;
02916     }
02917 
02918     return 0;
02919  error:
02920     av_freep(&mov->tracks);
02921     return -1;
02922 }
02923 
02924 static int mov_write_trailer(AVFormatContext *s)
02925 {
02926     MOVMuxContext *mov = s->priv_data;
02927     AVIOContext *pb = s->pb;
02928     int res = 0;
02929     int i;
02930 
02931     int64_t moov_pos = avio_tell(pb);
02932 
02933     if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
02934         /* Write size of mdat tag */
02935         if (mov->mdat_size + 8 <= UINT32_MAX) {
02936             avio_seek(pb, mov->mdat_pos, SEEK_SET);
02937             avio_wb32(pb, mov->mdat_size + 8);
02938         } else {
02939             /* overwrite 'wide' placeholder atom */
02940             avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
02941             /* special value: real atom size will be 64 bit value after
02942              * tag field */
02943             avio_wb32(pb, 1);
02944             ffio_wfourcc(pb, "mdat");
02945             avio_wb64(pb, mov->mdat_size + 16);
02946         }
02947         avio_seek(pb, mov->reserved_moov_size ? mov->reserved_moov_pos : moov_pos, SEEK_SET);
02948 
02949         mov_write_moov_tag(pb, mov, s);
02950         if(mov->reserved_moov_size){
02951             int64_t size=  mov->reserved_moov_size - (avio_tell(pb) - mov->reserved_moov_pos);
02952             if(size < 8){
02953                 av_log(s, AV_LOG_ERROR, "reserved_moov_size is too small, needed %"PRId64" additional\n", 8-size);
02954                 return -1;
02955             }
02956             avio_wb32(pb, size);
02957             ffio_wfourcc(pb, "free");
02958             for(i=0; i<size; i++)
02959                 avio_w8(pb, 0);
02960             avio_seek(pb, moov_pos, SEEK_SET);
02961         }
02962     } else {
02963         mov_flush_fragment(s);
02964         mov_write_mfra_tag(pb, mov);
02965     }
02966 
02967     if (mov->chapter_track)
02968         av_freep(&mov->tracks[mov->chapter_track].enc);
02969 
02970     for (i=0; i<mov->nb_streams; i++) {
02971         if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
02972             ff_mov_close_hinting(&mov->tracks[i]);
02973         av_freep(&mov->tracks[i].cluster);
02974         av_freep(&mov->tracks[i].frag_info);
02975 
02976         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
02977 
02978     }
02979 
02980     avio_flush(pb);
02981 
02982     av_freep(&mov->tracks);
02983 
02984     return res;
02985 }
02986 
02987 #if CONFIG_MOV_MUXER
02988 MOV_CLASS(mov)
02989 AVOutputFormat ff_mov_muxer = {
02990     .name              = "mov",
02991     .long_name         = NULL_IF_CONFIG_SMALL("MOV format"),
02992     .extensions        = "mov",
02993     .priv_data_size    = sizeof(MOVMuxContext),
02994     .audio_codec       = CODEC_ID_AAC,
02995 #if CONFIG_LIBX264_ENCODER
02996     .video_codec       = CODEC_ID_H264,
02997 #else
02998     .video_codec       = CODEC_ID_MPEG4,
02999 #endif
03000     .write_header      = mov_write_header,
03001     .write_packet      = ff_mov_write_packet,
03002     .write_trailer     = mov_write_trailer,
03003     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03004     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},
03005     .priv_class = &mov_muxer_class,
03006 };
03007 #endif
03008 #if CONFIG_TGP_MUXER
03009 MOV_CLASS(tgp)
03010 AVOutputFormat ff_tgp_muxer = {
03011     .name              = "3gp",
03012     .long_name         = NULL_IF_CONFIG_SMALL("3GP format"),
03013     .extensions        = "3gp",
03014     .priv_data_size    = sizeof(MOVMuxContext),
03015     .audio_codec       = CODEC_ID_AMR_NB,
03016     .video_codec       = CODEC_ID_H263,
03017     .write_header      = mov_write_header,
03018     .write_packet      = ff_mov_write_packet,
03019     .write_trailer     = mov_write_trailer,
03020     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03021     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
03022     .priv_class = &tgp_muxer_class,
03023 };
03024 #endif
03025 #if CONFIG_MP4_MUXER
03026 MOV_CLASS(mp4)
03027 AVOutputFormat ff_mp4_muxer = {
03028     .name              = "mp4",
03029     .long_name         = NULL_IF_CONFIG_SMALL("MP4 format"),
03030     .mime_type         = "application/mp4",
03031     .extensions        = "mp4",
03032     .priv_data_size    = sizeof(MOVMuxContext),
03033     .audio_codec       = CODEC_ID_AAC,
03034 #if CONFIG_LIBX264_ENCODER
03035     .video_codec       = CODEC_ID_H264,
03036 #else
03037     .video_codec       = CODEC_ID_MPEG4,
03038 #endif
03039     .write_header      = mov_write_header,
03040     .write_packet      = ff_mov_write_packet,
03041     .write_trailer     = mov_write_trailer,
03042     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03043     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
03044     .priv_class = &mp4_muxer_class,
03045 };
03046 #endif
03047 #if CONFIG_PSP_MUXER
03048 MOV_CLASS(psp)
03049 AVOutputFormat ff_psp_muxer = {
03050     .name              = "psp",
03051     .long_name         = NULL_IF_CONFIG_SMALL("PSP MP4 format"),
03052     .extensions        = "mp4,psp",
03053     .priv_data_size    = sizeof(MOVMuxContext),
03054     .audio_codec       = CODEC_ID_AAC,
03055 #if CONFIG_LIBX264_ENCODER
03056     .video_codec       = CODEC_ID_H264,
03057 #else
03058     .video_codec       = CODEC_ID_MPEG4,
03059 #endif
03060     .write_header      = mov_write_header,
03061     .write_packet      = ff_mov_write_packet,
03062     .write_trailer     = mov_write_trailer,
03063     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03064     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
03065     .priv_class = &psp_muxer_class,
03066 };
03067 #endif
03068 #if CONFIG_TG2_MUXER
03069 MOV_CLASS(tg2)
03070 AVOutputFormat ff_tg2_muxer = {
03071     .name              = "3g2",
03072     .long_name         = NULL_IF_CONFIG_SMALL("3GP2 format"),
03073     .extensions        = "3g2",
03074     .priv_data_size    = sizeof(MOVMuxContext),
03075     .audio_codec       = CODEC_ID_AMR_NB,
03076     .video_codec       = CODEC_ID_H263,
03077     .write_header      = mov_write_header,
03078     .write_packet      = ff_mov_write_packet,
03079     .write_trailer     = mov_write_trailer,
03080     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03081     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
03082     .priv_class = &tg2_muxer_class,
03083 };
03084 #endif
03085 #if CONFIG_IPOD_MUXER
03086 MOV_CLASS(ipod)
03087 AVOutputFormat ff_ipod_muxer = {
03088     .name              = "ipod",
03089     .long_name         = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),
03090     .mime_type         = "application/mp4",
03091     .extensions        = "m4v,m4a",
03092     .priv_data_size    = sizeof(MOVMuxContext),
03093     .audio_codec       = CODEC_ID_AAC,
03094     .video_codec       = CODEC_ID_H264,
03095     .write_header      = mov_write_header,
03096     .write_packet      = ff_mov_write_packet,
03097     .write_trailer     = mov_write_trailer,
03098     .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03099     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
03100     .priv_class = &ipod_muxer_class,
03101 };
03102 #endif
03103 #if CONFIG_ISMV_MUXER
03104 MOV_CLASS(ismv)
03105 AVOutputFormat ff_ismv_muxer = {
03106     .name              = "ismv",
03107     .long_name         = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming) format"),
03108     .mime_type         = "application/mp4",
03109     .extensions        = "ismv,isma",
03110     .priv_data_size    = sizeof(MOVMuxContext),
03111     .audio_codec       = CODEC_ID_AAC,
03112     .video_codec       = CODEC_ID_H264,
03113     .write_header      = mov_write_header,
03114     .write_packet      = ff_mov_write_packet,
03115     .write_trailer     = mov_write_trailer,
03116     .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
03117     .codec_tag         = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
03118     .priv_class        = &ismv_muxer_class,
03119 };
03120 #endif
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