Libav 0.7.1
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 Libav.
00008  *
00009  * Libav 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  * Libav 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 Libav; 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/opt.h"
00036 #include "libavutil/dict.h"
00037 #include "rtpenc.h"
00038 
00039 #undef NDEBUG
00040 #include <assert.h>
00041 
00042 static const AVOption options[] = {
00043     { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), FF_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00044     { "rtphint", "Add RTP hint tracks", 0, FF_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00045     FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
00046     { NULL },
00047 };
00048 
00049 static const AVClass mov_muxer_class = {
00050     .class_name = "MOV/3GP/MP4/3G2 muxer",
00051     .item_name  = av_default_item_name,
00052     .option     = options,
00053     .version    = LIBAVUTIL_VERSION_INT,
00054 };
00055 
00056 //FIXME support 64 bit variant with wide placeholders
00057 static int64_t updateSize(AVIOContext *pb, int64_t pos)
00058 {
00059     int64_t curpos = avio_tell(pb);
00060     avio_seek(pb, pos, SEEK_SET);
00061     avio_wb32(pb, curpos - pos); /* rewrite size */
00062     avio_seek(pb, curpos, SEEK_SET);
00063 
00064     return curpos - pos;
00065 }
00066 
00067 /* Chunk offset atom */
00068 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
00069 {
00070     int i;
00071     int mode64 = 0; //   use 32 bit size variant if possible
00072     int64_t pos = avio_tell(pb);
00073     avio_wb32(pb, 0); /* size */
00074     if (pos > UINT32_MAX) {
00075         mode64 = 1;
00076         ffio_wfourcc(pb, "co64");
00077     } else
00078         ffio_wfourcc(pb, "stco");
00079     avio_wb32(pb, 0); /* version & flags */
00080     avio_wb32(pb, track->entry); /* entry count */
00081     for (i=0; i<track->entry; i++) {
00082         if(mode64 == 1)
00083             avio_wb64(pb, track->cluster[i].pos);
00084         else
00085             avio_wb32(pb, track->cluster[i].pos);
00086     }
00087     return updateSize(pb, pos);
00088 }
00089 
00090 /* Sample size atom */
00091 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
00092 {
00093     int equalChunks = 1;
00094     int i, j, entries = 0, tst = -1, oldtst = -1;
00095 
00096     int64_t pos = avio_tell(pb);
00097     avio_wb32(pb, 0); /* size */
00098     ffio_wfourcc(pb, "stsz");
00099     avio_wb32(pb, 0); /* version & flags */
00100 
00101     for (i=0; i<track->entry; i++) {
00102         tst = track->cluster[i].size/track->cluster[i].entries;
00103         if(oldtst != -1 && tst != oldtst) {
00104             equalChunks = 0;
00105         }
00106         oldtst = tst;
00107         entries += track->cluster[i].entries;
00108     }
00109     if (equalChunks) {
00110         int sSize = track->cluster[0].size/track->cluster[0].entries;
00111         sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
00112         avio_wb32(pb, sSize); // sample size
00113         avio_wb32(pb, entries); // sample count
00114     }
00115     else {
00116         avio_wb32(pb, 0); // sample size
00117         avio_wb32(pb, entries); // sample count
00118         for (i=0; i<track->entry; i++) {
00119             for (j=0; j<track->cluster[i].entries; j++) {
00120                 avio_wb32(pb, track->cluster[i].size /
00121                          track->cluster[i].entries);
00122             }
00123         }
00124     }
00125     return updateSize(pb, pos);
00126 }
00127 
00128 /* Sample to chunk atom */
00129 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
00130 {
00131     int index = 0, oldval = -1, i;
00132     int64_t entryPos, curpos;
00133 
00134     int64_t pos = avio_tell(pb);
00135     avio_wb32(pb, 0); /* size */
00136     ffio_wfourcc(pb, "stsc");
00137     avio_wb32(pb, 0); // version & flags
00138     entryPos = avio_tell(pb);
00139     avio_wb32(pb, track->entry); // entry count
00140     for (i=0; i<track->entry; i++) {
00141         if(oldval != track->cluster[i].samplesInChunk)
00142         {
00143             avio_wb32(pb, i+1); // first chunk
00144             avio_wb32(pb, track->cluster[i].samplesInChunk); // samples per chunk
00145             avio_wb32(pb, 0x1); // sample description index
00146             oldval = track->cluster[i].samplesInChunk;
00147             index++;
00148         }
00149     }
00150     curpos = avio_tell(pb);
00151     avio_seek(pb, entryPos, SEEK_SET);
00152     avio_wb32(pb, index); // rewrite size
00153     avio_seek(pb, curpos, SEEK_SET);
00154 
00155     return updateSize(pb, pos);
00156 }
00157 
00158 /* Sync sample atom */
00159 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
00160 {
00161     int64_t curpos, entryPos;
00162     int i, index = 0;
00163     int64_t pos = avio_tell(pb);
00164     avio_wb32(pb, 0); // size
00165     ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
00166     avio_wb32(pb, 0); // version & flags
00167     entryPos = avio_tell(pb);
00168     avio_wb32(pb, track->entry); // entry count
00169     for (i=0; i<track->entry; i++) {
00170         if (track->cluster[i].flags & flag) {
00171             avio_wb32(pb, i+1);
00172             index++;
00173         }
00174     }
00175     curpos = avio_tell(pb);
00176     avio_seek(pb, entryPos, SEEK_SET);
00177     avio_wb32(pb, index); // rewrite size
00178     avio_seek(pb, curpos, SEEK_SET);
00179     return updateSize(pb, pos);
00180 }
00181 
00182 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
00183 {
00184     avio_wb32(pb, 0x11); /* size */
00185     if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
00186     else                         ffio_wfourcc(pb, "damr");
00187     ffio_wfourcc(pb, "FFMP");
00188     avio_w8(pb, 0); /* decoder version */
00189 
00190     avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
00191     avio_w8(pb, 0x00); /* Mode change period (no restriction) */
00192     avio_w8(pb, 0x01); /* Frames per sample */
00193     return 0x11;
00194 }
00195 
00196 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
00197 {
00198     GetBitContext gbc;
00199     PutBitContext pbc;
00200     uint8_t buf[3];
00201     int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
00202 
00203     if (track->vosLen < 7)
00204         return -1;
00205 
00206     avio_wb32(pb, 11);
00207     ffio_wfourcc(pb, "dac3");
00208 
00209     init_get_bits(&gbc, track->vosData+4, (track->vosLen-4) * 8);
00210     fscod      = get_bits(&gbc, 2);
00211     frmsizecod = get_bits(&gbc, 6);
00212     bsid       = get_bits(&gbc, 5);
00213     bsmod      = get_bits(&gbc, 3);
00214     acmod      = get_bits(&gbc, 3);
00215     if (acmod == 2) {
00216         skip_bits(&gbc, 2); // dsurmod
00217     } else {
00218         if ((acmod & 1) && acmod != 1)
00219             skip_bits(&gbc, 2); // cmixlev
00220         if (acmod & 4)
00221             skip_bits(&gbc, 2); // surmixlev
00222     }
00223     lfeon = get_bits1(&gbc);
00224 
00225     init_put_bits(&pbc, buf, sizeof(buf));
00226     put_bits(&pbc, 2, fscod);
00227     put_bits(&pbc, 5, bsid);
00228     put_bits(&pbc, 3, bsmod);
00229     put_bits(&pbc, 3, acmod);
00230     put_bits(&pbc, 1, lfeon);
00231     put_bits(&pbc, 5, frmsizecod>>1); // bit_rate_code
00232     put_bits(&pbc, 5, 0); // reserved
00233 
00234     flush_put_bits(&pbc);
00235     avio_write(pb, buf, sizeof(buf));
00236 
00237     return 11;
00238 }
00239 
00244 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
00245 {
00246     avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00247     return track->enc->extradata_size;
00248 }
00249 
00250 static int mov_write_enda_tag(AVIOContext *pb)
00251 {
00252     avio_wb32(pb, 10);
00253     ffio_wfourcc(pb, "enda");
00254     avio_wb16(pb, 1); /* little endian */
00255     return 10;
00256 }
00257 
00258 static void putDescr(AVIOContext *pb, int tag, unsigned int size)
00259 {
00260     int i = 3;
00261     avio_w8(pb, tag);
00262     for(; i>0; i--)
00263         avio_w8(pb, (size>>(7*i)) | 0x80);
00264     avio_w8(pb, size & 0x7F);
00265 }
00266 
00267 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
00268 {
00269     int64_t pos = avio_tell(pb);
00270     int decoderSpecificInfoLen = track->vosLen ? 5+track->vosLen : 0;
00271 
00272     avio_wb32(pb, 0); // size
00273     ffio_wfourcc(pb, "esds");
00274     avio_wb32(pb, 0); // Version
00275 
00276     // ES descriptor
00277     putDescr(pb, 0x03, 3 + 5+13 + decoderSpecificInfoLen + 5+1);
00278     avio_wb16(pb, track->trackID);
00279     avio_w8(pb, 0x00); // flags (= no flags)
00280 
00281     // DecoderConfig descriptor
00282     putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
00283 
00284     // Object type indication
00285     if ((track->enc->codec_id == CODEC_ID_MP2 ||
00286          track->enc->codec_id == CODEC_ID_MP3) &&
00287         track->enc->sample_rate > 24000)
00288         avio_w8(pb, 0x6B); // 11172-3
00289     else
00290         avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
00291 
00292     // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
00293     // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
00294     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00295         avio_w8(pb, 0x15); // flags (= Audiostream)
00296     else
00297         avio_w8(pb, 0x11); // flags (= Visualstream)
00298 
00299     avio_w8(pb,  track->enc->rc_buffer_size>>(3+16));      // Buffersize DB (24 bits)
00300     avio_wb16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB
00301 
00302     avio_wb32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
00303     if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)
00304         avio_wb32(pb, 0); // vbr
00305     else
00306         avio_wb32(pb, track->enc->rc_max_rate); // avg bitrate
00307 
00308     if (track->vosLen) {
00309         // DecoderSpecific info descriptor
00310         putDescr(pb, 0x05, track->vosLen);
00311         avio_write(pb, track->vosData, track->vosLen);
00312     }
00313 
00314     // SL descriptor
00315     putDescr(pb, 0x06, 1);
00316     avio_w8(pb, 0x02);
00317     return updateSize(pb, pos);
00318 }
00319 
00320 static int mov_pcm_le_gt16(enum CodecID codec_id)
00321 {
00322     return codec_id == CODEC_ID_PCM_S24LE ||
00323            codec_id == CODEC_ID_PCM_S32LE ||
00324            codec_id == CODEC_ID_PCM_F32LE ||
00325            codec_id == CODEC_ID_PCM_F64LE;
00326 }
00327 
00328 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
00329 {
00330     int64_t pos = avio_tell(pb);
00331     avio_wb32(pb, 0);
00332     avio_wl32(pb, track->tag); // store it byteswapped
00333     track->enc->codec_tag = av_bswap16(track->tag >> 16);
00334     ff_put_wav_header(pb, track->enc);
00335     return updateSize(pb, pos);
00336 }
00337 
00338 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
00339 {
00340     int64_t pos = avio_tell(pb);
00341 
00342     avio_wb32(pb, 0);     /* size */
00343     ffio_wfourcc(pb, "wave");
00344 
00345     avio_wb32(pb, 12);    /* size */
00346     ffio_wfourcc(pb, "frma");
00347     avio_wl32(pb, track->tag);
00348 
00349     if (track->enc->codec_id == CODEC_ID_AAC) {
00350         /* useless atom needed by mplayer, ipod, not needed by quicktime */
00351         avio_wb32(pb, 12); /* size */
00352         ffio_wfourcc(pb, "mp4a");
00353         avio_wb32(pb, 0);
00354         mov_write_esds_tag(pb, track);
00355     } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
00356         mov_write_enda_tag(pb);
00357     } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {
00358         mov_write_amr_tag(pb, track);
00359     } else if (track->enc->codec_id == CODEC_ID_AC3) {
00360         mov_write_ac3_tag(pb, track);
00361     } else if (track->enc->codec_id == CODEC_ID_ALAC) {
00362         mov_write_extradata_tag(pb, track);
00363     } else if (track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00364                track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00365         mov_write_ms_tag(pb, track);
00366     }
00367 
00368     avio_wb32(pb, 8);     /* size */
00369     avio_wb32(pb, 0);     /* null tag */
00370 
00371     return updateSize(pb, pos);
00372 }
00373 
00374 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
00375 {
00376     avio_wb32(pb, track->vosLen+8);
00377     ffio_wfourcc(pb, "glbl");
00378     avio_write(pb, track->vosData, track->vosLen);
00379     return 8+track->vosLen;
00380 }
00381 
00386 static int mov_get_lpcm_flags(enum CodecID codec_id)
00387 {
00388     switch (codec_id) {
00389     case CODEC_ID_PCM_F32BE:
00390     case CODEC_ID_PCM_F64BE:
00391         return 11;
00392     case CODEC_ID_PCM_F32LE:
00393     case CODEC_ID_PCM_F64LE:
00394         return 9;
00395     case CODEC_ID_PCM_U8:
00396         return 10;
00397     case CODEC_ID_PCM_S16BE:
00398     case CODEC_ID_PCM_S24BE:
00399     case CODEC_ID_PCM_S32BE:
00400         return 14;
00401     case CODEC_ID_PCM_S8:
00402     case CODEC_ID_PCM_S16LE:
00403     case CODEC_ID_PCM_S24LE:
00404     case CODEC_ID_PCM_S32LE:
00405         return 12;
00406     default:
00407         return 0;
00408     }
00409 }
00410 
00411 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
00412 {
00413     int64_t pos = avio_tell(pb);
00414     int version = 0;
00415     uint32_t tag = track->tag;
00416 
00417     if (track->mode == MODE_MOV) {
00418         if (track->timescale > UINT16_MAX) {
00419             if (mov_get_lpcm_flags(track->enc->codec_id))
00420                 tag = AV_RL32("lpcm");
00421             version = 2;
00422         } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
00423                    track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00424                    track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00425             version = 1;
00426         }
00427     }
00428 
00429     avio_wb32(pb, 0); /* size */
00430     avio_wl32(pb, tag); // store it byteswapped
00431     avio_wb32(pb, 0); /* Reserved */
00432     avio_wb16(pb, 0); /* Reserved */
00433     avio_wb16(pb, 1); /* Data-reference index, XXX  == 1 */
00434 
00435     /* SoundDescription */
00436     avio_wb16(pb, version); /* Version */
00437     avio_wb16(pb, 0); /* Revision level */
00438     avio_wb32(pb, 0); /* Reserved */
00439 
00440     if (version == 2) {
00441         avio_wb16(pb, 3);
00442         avio_wb16(pb, 16);
00443         avio_wb16(pb, 0xfffe);
00444         avio_wb16(pb, 0);
00445         avio_wb32(pb, 0x00010000);
00446         avio_wb32(pb, 72);
00447         avio_wb64(pb, av_dbl2int(track->timescale));
00448         avio_wb32(pb, track->enc->channels);
00449         avio_wb32(pb, 0x7F000000);
00450         avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
00451         avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
00452         avio_wb32(pb, track->sampleSize);
00453         avio_wb32(pb, track->enc->frame_size);
00454     } else {
00455         if (track->mode == MODE_MOV) {
00456             avio_wb16(pb, track->enc->channels);
00457             if (track->enc->codec_id == CODEC_ID_PCM_U8 ||
00458                 track->enc->codec_id == CODEC_ID_PCM_S8)
00459                 avio_wb16(pb, 8); /* bits per sample */
00460             else
00461                 avio_wb16(pb, 16);
00462             avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
00463         } else { /* reserved for mp4/3gp */
00464             avio_wb16(pb, 2);
00465             avio_wb16(pb, 16);
00466             avio_wb16(pb, 0);
00467         }
00468 
00469         avio_wb16(pb, 0); /* packet size (= 0) */
00470         avio_wb16(pb, track->timescale); /* Time scale */
00471         avio_wb16(pb, 0); /* Reserved */
00472     }
00473 
00474     if(version == 1) { /* SoundDescription V1 extended info */
00475         avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
00476         avio_wb32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
00477         avio_wb32(pb, track->sampleSize); /* Bytes per frame */
00478         avio_wb32(pb, 2); /* Bytes per sample */
00479     }
00480 
00481     if(track->mode == MODE_MOV &&
00482        (track->enc->codec_id == CODEC_ID_AAC ||
00483         track->enc->codec_id == CODEC_ID_AC3 ||
00484         track->enc->codec_id == CODEC_ID_AMR_NB ||
00485         track->enc->codec_id == CODEC_ID_ALAC ||
00486         track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00487         track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV ||
00488         mov_pcm_le_gt16(track->enc->codec_id)))
00489         mov_write_wave_tag(pb, track);
00490     else if(track->tag == MKTAG('m','p','4','a'))
00491         mov_write_esds_tag(pb, track);
00492     else if(track->enc->codec_id == CODEC_ID_AMR_NB)
00493         mov_write_amr_tag(pb, track);
00494     else if(track->enc->codec_id == CODEC_ID_AC3)
00495         mov_write_ac3_tag(pb, track);
00496     else if(track->enc->codec_id == CODEC_ID_ALAC)
00497         mov_write_extradata_tag(pb, track);
00498     else if(track->vosLen > 0)
00499         mov_write_glbl_tag(pb, track);
00500 
00501     return updateSize(pb, pos);
00502 }
00503 
00504 static int mov_write_d263_tag(AVIOContext *pb)
00505 {
00506     avio_wb32(pb, 0xf); /* size */
00507     ffio_wfourcc(pb, "d263");
00508     ffio_wfourcc(pb, "FFMP");
00509     avio_w8(pb, 0); /* decoder version */
00510     /* FIXME use AVCodecContext level/profile, when encoder will set values */
00511     avio_w8(pb, 0xa); /* level */
00512     avio_w8(pb, 0); /* profile */
00513     return 0xf;
00514 }
00515 
00516 /* TODO: No idea about these values */
00517 static int mov_write_svq3_tag(AVIOContext *pb)
00518 {
00519     avio_wb32(pb, 0x15);
00520     ffio_wfourcc(pb, "SMI ");
00521     ffio_wfourcc(pb, "SEQH");
00522     avio_wb32(pb, 0x5);
00523     avio_wb32(pb, 0xe2c0211d);
00524     avio_wb32(pb, 0xc0000000);
00525     avio_w8(pb, 0);
00526     return 0x15;
00527 }
00528 
00529 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
00530 {
00531     int64_t pos = avio_tell(pb);
00532 
00533     avio_wb32(pb, 0);
00534     ffio_wfourcc(pb, "avcC");
00535     ff_isom_write_avcc(pb, track->vosData, track->vosLen);
00536     return updateSize(pb, pos);
00537 }
00538 
00539 /* also used by all avid codecs (dv, imx, meridien) and their variants */
00540 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
00541 {
00542     int i;
00543     avio_wb32(pb, 24); /* size */
00544     ffio_wfourcc(pb, "ACLR");
00545     ffio_wfourcc(pb, "ACLR");
00546     ffio_wfourcc(pb, "0001");
00547     avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
00548     avio_wb32(pb, 0); /* unknown */
00549 
00550     avio_wb32(pb, 24); /* size */
00551     ffio_wfourcc(pb, "APRG");
00552     ffio_wfourcc(pb, "APRG");
00553     ffio_wfourcc(pb, "0001");
00554     avio_wb32(pb, 1); /* unknown */
00555     avio_wb32(pb, 0); /* unknown */
00556 
00557     avio_wb32(pb, 120); /* size */
00558     ffio_wfourcc(pb, "ARES");
00559     ffio_wfourcc(pb, "ARES");
00560     ffio_wfourcc(pb, "0001");
00561     avio_wb32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */
00562     avio_wb32(pb, track->enc->width);
00563     /* values below are based on samples created with quicktime and avid codecs */
00564     if (track->vosData[5] & 2) { // interlaced
00565         avio_wb32(pb, track->enc->height/2);
00566         avio_wb32(pb, 2); /* unknown */
00567         avio_wb32(pb, 0); /* unknown */
00568         avio_wb32(pb, 4); /* unknown */
00569     } else {
00570         avio_wb32(pb, track->enc->height);
00571         avio_wb32(pb, 1); /* unknown */
00572         avio_wb32(pb, 0); /* unknown */
00573         if (track->enc->height == 1080)
00574             avio_wb32(pb, 5); /* unknown */
00575         else
00576             avio_wb32(pb, 6); /* unknown */
00577     }
00578     /* padding */
00579     for (i = 0; i < 10; i++)
00580         avio_wb64(pb, 0);
00581 
00582     /* extra padding for stsd needed */
00583     avio_wb32(pb, 0);
00584     return 0;
00585 }
00586 
00587 static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00588 {
00589     int tag = track->enc->codec_tag;
00590 
00591     if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
00592         return 0;
00593 
00594     if      (track->enc->codec_id == CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
00595     else if (track->enc->codec_id == CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
00596     else if (track->enc->codec_id == CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
00597     else if (track->enc->codec_id == CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');
00598     else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
00599     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
00600 
00601     return tag;
00602 }
00603 
00604 static const AVCodecTag codec_ipod_tags[] = {
00605     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00606     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00607     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00608     { CODEC_ID_ALAC,   MKTAG('a','l','a','c') },
00609     { CODEC_ID_AC3,    MKTAG('a','c','-','3') },
00610     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00611     { CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
00612     { CODEC_ID_NONE, 0 },
00613 };
00614 
00615 static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00616 {
00617     int tag = track->enc->codec_tag;
00618 
00619     // keep original tag for subs, ipod supports both formats
00620     if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
00621         (tag == MKTAG('t','x','3','g') ||
00622          tag == MKTAG('t','e','x','t'))))
00623         tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
00624 
00625     if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
00626         av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
00627                "Quicktime/Ipod might not play the file\n");
00628 
00629     return tag;
00630 }
00631 
00632 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
00633 {
00634     int tag;
00635 
00636     if (track->enc->width == 720) /* SD */
00637         if (track->enc->height == 480) /* NTSC */
00638             if  (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
00639             else                                         tag = MKTAG('d','v','c',' ');
00640         else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
00641         else if (track->enc->pix_fmt == PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
00642         else                                             tag = MKTAG('d','v','p','p');
00643     else if (track->enc->height == 720) /* HD 720 line */
00644         if  (track->enc->time_base.den == 50)            tag = MKTAG('d','v','h','q');
00645         else                                             tag = MKTAG('d','v','h','p');
00646     else if (track->enc->height == 1080) /* HD 1080 line */
00647         if  (track->enc->time_base.den == 25)            tag = MKTAG('d','v','h','5');
00648         else                                             tag = MKTAG('d','v','h','6');
00649     else {
00650         av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
00651         return 0;
00652     }
00653 
00654     return tag;
00655 }
00656 
00657 static const struct {
00658     enum PixelFormat pix_fmt;
00659     uint32_t tag;
00660     unsigned bps;
00661 } mov_pix_fmt_tags[] = {
00662     { PIX_FMT_YUYV422, MKTAG('y','u','v','s'),  0 },
00663     { PIX_FMT_UYVY422, MKTAG('2','v','u','y'),  0 },
00664     { PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
00665     { PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
00666     { PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
00667     { PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
00668     { PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
00669     { PIX_FMT_RGB24,   MKTAG('r','a','w',' '), 24 },
00670     { PIX_FMT_BGR24,   MKTAG('2','4','B','G'), 24 },
00671     { PIX_FMT_ARGB,    MKTAG('r','a','w',' '), 32 },
00672     { PIX_FMT_BGRA,    MKTAG('B','G','R','A'), 32 },
00673     { PIX_FMT_RGBA,    MKTAG('R','G','B','A'), 32 },
00674     { PIX_FMT_ABGR,    MKTAG('A','B','G','R'), 32 },
00675     { PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
00676 };
00677 
00678 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
00679 {
00680     int tag = track->enc->codec_tag;
00681     int i;
00682 
00683     for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
00684         if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
00685             tag = mov_pix_fmt_tags[i].tag;
00686             track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
00687             break;
00688         }
00689     }
00690 
00691     return tag;
00692 }
00693 
00694 static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00695 {
00696     int tag = track->enc->codec_tag;
00697 
00698     if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
00699                  (track->enc->codec_id == CODEC_ID_DVVIDEO ||
00700                   track->enc->codec_id == CODEC_ID_RAWVIDEO ||
00701                   track->enc->codec_id == CODEC_ID_H263 ||
00702                   av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
00703         if (track->enc->codec_id == CODEC_ID_DVVIDEO)
00704             tag = mov_get_dv_codec_tag(s, track);
00705         else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)
00706             tag = mov_get_rawvideo_codec_tag(s, track);
00707         else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
00708             tag = ff_codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
00709             if (!tag) { // if no mac fcc found, try with Microsoft tags
00710                 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
00711                 if (tag)
00712                     av_log(s, AV_LOG_INFO, "Warning, using MS style video codec tag, "
00713                            "the file may be unplayable!\n");
00714             }
00715         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
00716             tag = ff_codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
00717             if (!tag) { // if no mac fcc found, try with Microsoft tags
00718                 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
00719                 if (ms_tag) {
00720                     tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
00721                     av_log(s, AV_LOG_INFO, "Warning, using MS style audio codec tag, "
00722                            "the file may be unplayable!\n");
00723                 }
00724             }
00725         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00726             tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
00727     }
00728 
00729     return tag;
00730 }
00731 
00732 static const AVCodecTag codec_3gp_tags[] = {
00733     { CODEC_ID_H263,   MKTAG('s','2','6','3') },
00734     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00735     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00736     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00737     { CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
00738     { CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
00739     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00740     { CODEC_ID_NONE, 0 },
00741 };
00742 
00743 static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
00744 {
00745     int tag = track->enc->codec_tag;
00746 
00747     if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
00748         tag = mp4_get_codec_tag(s, track);
00749     else if (track->mode == MODE_IPOD)
00750         tag = ipod_get_codec_tag(s, track);
00751     else if (track->mode & MODE_3GP)
00752         tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
00753     else
00754         tag = mov_get_codec_tag(s, track);
00755 
00756     return tag;
00757 }
00758 
00763 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
00764 {
00765     avio_wb32(pb, 28);
00766     ffio_wfourcc(pb, "uuid");
00767     avio_wb32(pb, 0x6b6840f2);
00768     avio_wb32(pb, 0x5f244fc5);
00769     avio_wb32(pb, 0xba39a51b);
00770     avio_wb32(pb, 0xcf0323f3);
00771     avio_wb32(pb, 0x0);
00772     return 28;
00773 }
00774 
00775 static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
00776 {
00777     int64_t pos = avio_tell(pb);
00778     avio_wb32(pb, 0);    /* size */
00779     avio_wl32(pb, track->tag); // store it byteswapped
00780     avio_wb32(pb, 0);    /* Reserved */
00781     avio_wb16(pb, 0);    /* Reserved */
00782     avio_wb16(pb, 1);    /* Data-reference index */
00783 
00784     if (track->enc->extradata_size)
00785         avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00786 
00787     return updateSize(pb, pos);
00788 }
00789 
00790 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
00791 {
00792     AVRational sar;
00793     av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
00794               track->enc->sample_aspect_ratio.den, INT_MAX);
00795 
00796     avio_wb32(pb, 16);
00797     ffio_wfourcc(pb, "pasp");
00798     avio_wb32(pb, sar.num);
00799     avio_wb32(pb, sar.den);
00800     return 16;
00801 }
00802 
00803 static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
00804 {
00805     int64_t pos = avio_tell(pb);
00806     char compressor_name[32];
00807 
00808     avio_wb32(pb, 0); /* size */
00809     avio_wl32(pb, track->tag); // store it byteswapped
00810     avio_wb32(pb, 0); /* Reserved */
00811     avio_wb16(pb, 0); /* Reserved */
00812     avio_wb16(pb, 1); /* Data-reference index */
00813 
00814     avio_wb16(pb, 0); /* Codec stream version */
00815     avio_wb16(pb, 0); /* Codec stream revision (=0) */
00816     if (track->mode == MODE_MOV) {
00817         ffio_wfourcc(pb, "FFMP"); /* Vendor */
00818         if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
00819             avio_wb32(pb, 0); /* Temporal Quality */
00820             avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
00821         } else {
00822             avio_wb32(pb, 0x200); /* Temporal Quality = normal */
00823             avio_wb32(pb, 0x200); /* Spatial Quality = normal */
00824         }
00825     } else {
00826         avio_wb32(pb, 0); /* Reserved */
00827         avio_wb32(pb, 0); /* Reserved */
00828         avio_wb32(pb, 0); /* Reserved */
00829     }
00830     avio_wb16(pb, track->enc->width); /* Video width */
00831     avio_wb16(pb, track->height); /* Video height */
00832     avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
00833     avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
00834     avio_wb32(pb, 0); /* Data size (= 0) */
00835     avio_wb16(pb, 1); /* Frame count (= 1) */
00836 
00837     memset(compressor_name,0,32);
00838     /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
00839     if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
00840         av_strlcpy(compressor_name,track->enc->codec->name,32);
00841     avio_w8(pb, strlen(compressor_name));
00842     avio_write(pb, compressor_name, 31);
00843 
00844     if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
00845         avio_wb16(pb, track->enc->bits_per_coded_sample);
00846     else
00847         avio_wb16(pb, 0x18); /* Reserved */
00848     avio_wb16(pb, 0xffff); /* Reserved */
00849     if(track->tag == MKTAG('m','p','4','v'))
00850         mov_write_esds_tag(pb, track);
00851     else if(track->enc->codec_id == CODEC_ID_H263)
00852         mov_write_d263_tag(pb);
00853     else if(track->enc->codec_id == CODEC_ID_SVQ3)
00854         mov_write_svq3_tag(pb);
00855     else if(track->enc->codec_id == CODEC_ID_DNXHD)
00856         mov_write_avid_tag(pb, track);
00857     else if(track->enc->codec_id == CODEC_ID_H264) {
00858         mov_write_avcc_tag(pb, track);
00859         if(track->mode == MODE_IPOD)
00860             mov_write_uuid_tag_ipod(pb);
00861     } else if(track->vosLen > 0)
00862         mov_write_glbl_tag(pb, track);
00863 
00864     if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
00865         track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
00866         mov_write_pasp_tag(pb, track);
00867     }
00868 
00869     return updateSize(pb, pos);
00870 }
00871 
00872 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
00873 {
00874     int64_t pos = avio_tell(pb);
00875     avio_wb32(pb, 0); /* size */
00876     ffio_wfourcc(pb, "rtp ");
00877     avio_wb32(pb, 0); /* Reserved */
00878     avio_wb16(pb, 0); /* Reserved */
00879     avio_wb16(pb, 1); /* Data-reference index */
00880 
00881     avio_wb16(pb, 1); /* Hint track version */
00882     avio_wb16(pb, 1); /* Highest compatible version */
00883     avio_wb32(pb, track->max_packet_size); /* Max packet size */
00884 
00885     avio_wb32(pb, 12); /* size */
00886     ffio_wfourcc(pb, "tims");
00887     avio_wb32(pb, track->timescale);
00888 
00889     return updateSize(pb, pos);
00890 }
00891 
00892 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
00893 {
00894     int64_t pos = avio_tell(pb);
00895     avio_wb32(pb, 0); /* size */
00896     ffio_wfourcc(pb, "stsd");
00897     avio_wb32(pb, 0); /* version & flags */
00898     avio_wb32(pb, 1); /* entry count */
00899     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
00900         mov_write_video_tag(pb, track);
00901     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00902         mov_write_audio_tag(pb, track);
00903     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00904         mov_write_subtitle_tag(pb, track);
00905     else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
00906         mov_write_rtp_tag(pb, track);
00907     return updateSize(pb, pos);
00908 }
00909 
00910 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
00911 {
00912     MOVStts *ctts_entries;
00913     uint32_t entries = 0;
00914     uint32_t atom_size;
00915     int i;
00916 
00917     ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
00918     ctts_entries[0].count = 1;
00919     ctts_entries[0].duration = track->cluster[0].cts;
00920     for (i=1; i<track->entry; i++) {
00921         if (track->cluster[i].cts == ctts_entries[entries].duration) {
00922             ctts_entries[entries].count++; /* compress */
00923         } else {
00924             entries++;
00925             ctts_entries[entries].duration = track->cluster[i].cts;
00926             ctts_entries[entries].count = 1;
00927         }
00928     }
00929     entries++; /* last one */
00930     atom_size = 16 + (entries * 8);
00931     avio_wb32(pb, atom_size); /* size */
00932     ffio_wfourcc(pb, "ctts");
00933     avio_wb32(pb, 0); /* version & flags */
00934     avio_wb32(pb, entries); /* entry count */
00935     for (i=0; i<entries; i++) {
00936         avio_wb32(pb, ctts_entries[i].count);
00937         avio_wb32(pb, ctts_entries[i].duration);
00938     }
00939     av_free(ctts_entries);
00940     return atom_size;
00941 }
00942 
00943 /* Time to sample atom */
00944 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
00945 {
00946     MOVStts *stts_entries;
00947     uint32_t entries = -1;
00948     uint32_t atom_size;
00949     int i;
00950 
00951     if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
00952         stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
00953         stts_entries[0].count = track->sampleCount;
00954         stts_entries[0].duration = 1;
00955         entries = 1;
00956     } else {
00957         stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */
00958         for (i=0; i<track->entry; i++) {
00959             int64_t duration = i + 1 == track->entry ?
00960                 track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
00961                 track->cluster[i+1].dts - track->cluster[i].dts;
00962             if (i && duration == stts_entries[entries].duration) {
00963                 stts_entries[entries].count++; /* compress */
00964             } else {
00965                 entries++;
00966                 stts_entries[entries].duration = duration;
00967                 stts_entries[entries].count = 1;
00968             }
00969         }
00970         entries++; /* last one */
00971     }
00972     atom_size = 16 + (entries * 8);
00973     avio_wb32(pb, atom_size); /* size */
00974     ffio_wfourcc(pb, "stts");
00975     avio_wb32(pb, 0); /* version & flags */
00976     avio_wb32(pb, entries); /* entry count */
00977     for (i=0; i<entries; i++) {
00978         avio_wb32(pb, stts_entries[i].count);
00979         avio_wb32(pb, stts_entries[i].duration);
00980     }
00981     av_free(stts_entries);
00982     return atom_size;
00983 }
00984 
00985 static int mov_write_dref_tag(AVIOContext *pb)
00986 {
00987     avio_wb32(pb, 28); /* size */
00988     ffio_wfourcc(pb, "dref");
00989     avio_wb32(pb, 0); /* version & flags */
00990     avio_wb32(pb, 1); /* entry count */
00991 
00992     avio_wb32(pb, 0xc); /* size */
00993     ffio_wfourcc(pb, "url ");
00994     avio_wb32(pb, 1); /* version & flags */
00995 
00996     return 28;
00997 }
00998 
00999 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
01000 {
01001     int64_t pos = avio_tell(pb);
01002     avio_wb32(pb, 0); /* size */
01003     ffio_wfourcc(pb, "stbl");
01004     mov_write_stsd_tag(pb, track);
01005     mov_write_stts_tag(pb, track);
01006     if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01007          track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
01008         track->hasKeyframes && track->hasKeyframes < track->entry)
01009         mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
01010     if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
01011         mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
01012     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
01013         track->flags & MOV_TRACK_CTTS)
01014         mov_write_ctts_tag(pb, track);
01015     mov_write_stsc_tag(pb, track);
01016     mov_write_stsz_tag(pb, track);
01017     mov_write_stco_tag(pb, track);
01018     return updateSize(pb, pos);
01019 }
01020 
01021 static int mov_write_dinf_tag(AVIOContext *pb)
01022 {
01023     int64_t pos = avio_tell(pb);
01024     avio_wb32(pb, 0); /* size */
01025     ffio_wfourcc(pb, "dinf");
01026     mov_write_dref_tag(pb);
01027     return updateSize(pb, pos);
01028 }
01029 
01030 static int mov_write_nmhd_tag(AVIOContext *pb)
01031 {
01032     avio_wb32(pb, 12);
01033     ffio_wfourcc(pb, "nmhd");
01034     avio_wb32(pb, 0);
01035     return 12;
01036 }
01037 
01038 static int mov_write_gmhd_tag(AVIOContext *pb)
01039 {
01040     avio_wb32(pb, 0x20);   /* size */
01041     ffio_wfourcc(pb, "gmhd");
01042     avio_wb32(pb, 0x18);   /* gmin size */
01043     ffio_wfourcc(pb, "gmin");/* generic media info */
01044     avio_wb32(pb, 0);      /* version & flags */
01045     avio_wb16(pb, 0x40);   /* graphics mode = */
01046     avio_wb16(pb, 0x8000); /* opColor (r?) */
01047     avio_wb16(pb, 0x8000); /* opColor (g?) */
01048     avio_wb16(pb, 0x8000); /* opColor (b?) */
01049     avio_wb16(pb, 0);      /* balance */
01050     avio_wb16(pb, 0);      /* reserved */
01051     return 0x20;
01052 }
01053 
01054 static int mov_write_smhd_tag(AVIOContext *pb)
01055 {
01056     avio_wb32(pb, 16); /* size */
01057     ffio_wfourcc(pb, "smhd");
01058     avio_wb32(pb, 0); /* version & flags */
01059     avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
01060     avio_wb16(pb, 0); /* reserved */
01061     return 16;
01062 }
01063 
01064 static int mov_write_vmhd_tag(AVIOContext *pb)
01065 {
01066     avio_wb32(pb, 0x14); /* size (always 0x14) */
01067     ffio_wfourcc(pb, "vmhd");
01068     avio_wb32(pb, 0x01); /* version & flags */
01069     avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
01070     return 0x14;
01071 }
01072 
01073 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
01074 {
01075     const char *hdlr, *descr = NULL, *hdlr_type = NULL;
01076     int64_t pos = avio_tell(pb);
01077 
01078     if (!track) { /* no media --> data handler */
01079         hdlr = "dhlr";
01080         hdlr_type = "url ";
01081         descr = "DataHandler";
01082     } else {
01083         hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
01084         if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01085             hdlr_type = "vide";
01086             descr = "VideoHandler";
01087         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
01088             hdlr_type = "soun";
01089             descr = "SoundHandler";
01090         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01091             if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
01092             else                                      hdlr_type = "text";
01093             descr = "SubtitleHandler";
01094         } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
01095             hdlr_type = "hint";
01096             descr = "HintHandler";
01097         }
01098     }
01099 
01100     avio_wb32(pb, 0); /* size */
01101     ffio_wfourcc(pb, "hdlr");
01102     avio_wb32(pb, 0); /* Version & flags */
01103     avio_write(pb, hdlr, 4); /* handler */
01104     ffio_wfourcc(pb, hdlr_type); /* handler type */
01105     avio_wb32(pb ,0); /* reserved */
01106     avio_wb32(pb ,0); /* reserved */
01107     avio_wb32(pb ,0); /* reserved */
01108     if (!track || track->mode == MODE_MOV)
01109         avio_w8(pb, strlen(descr)); /* pascal string */
01110     avio_write(pb, descr, strlen(descr)); /* handler description */
01111     if (track && track->mode != MODE_MOV)
01112         avio_w8(pb, 0); /* c string */
01113     return updateSize(pb, pos);
01114 }
01115 
01116 static int mov_write_hmhd_tag(AVIOContext *pb)
01117 {
01118     /* This atom must be present, but leaving the values at zero
01119      * seems harmless. */
01120     avio_wb32(pb, 28); /* size */
01121     ffio_wfourcc(pb, "hmhd");
01122     avio_wb32(pb, 0); /* version, flags */
01123     avio_wb16(pb, 0); /* maxPDUsize */
01124     avio_wb16(pb, 0); /* avgPDUsize */
01125     avio_wb32(pb, 0); /* maxbitrate */
01126     avio_wb32(pb, 0); /* avgbitrate */
01127     avio_wb32(pb, 0); /* reserved */
01128     return 28;
01129 }
01130 
01131 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
01132 {
01133     int64_t pos = avio_tell(pb);
01134     avio_wb32(pb, 0); /* size */
01135     ffio_wfourcc(pb, "minf");
01136     if(track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
01137         mov_write_vmhd_tag(pb);
01138     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01139         mov_write_smhd_tag(pb);
01140     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01141         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
01142         else                                      mov_write_nmhd_tag(pb);
01143     } else if (track->tag == MKTAG('r','t','p',' ')) {
01144         mov_write_hmhd_tag(pb);
01145     }
01146     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
01147         mov_write_hdlr_tag(pb, NULL);
01148     mov_write_dinf_tag(pb);
01149     mov_write_stbl_tag(pb, track);
01150     return updateSize(pb, pos);
01151 }
01152 
01153 static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
01154 {
01155     int version = track->trackDuration < INT32_MAX ? 0 : 1;
01156 
01157     (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
01158     ffio_wfourcc(pb, "mdhd");
01159     avio_w8(pb, version);
01160     avio_wb24(pb, 0); /* flags */
01161     if (version == 1) {
01162         avio_wb64(pb, track->time);
01163         avio_wb64(pb, track->time);
01164     } else {
01165         avio_wb32(pb, track->time); /* creation time */
01166         avio_wb32(pb, track->time); /* modification time */
01167     }
01168     avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
01169     (version == 1) ? avio_wb64(pb, track->trackDuration) : avio_wb32(pb, track->trackDuration); /* duration */
01170     avio_wb16(pb, track->language); /* language */
01171     avio_wb16(pb, 0); /* reserved (quality) */
01172 
01173     if(version!=0 && track->mode == MODE_MOV){
01174         av_log(NULL, AV_LOG_ERROR,
01175             "FATAL error, file duration too long for timebase, this file will not be\n"
01176             "playable with quicktime. Choose a different timebase or a different\n"
01177             "container format\n");
01178     }
01179 
01180     return 32;
01181 }
01182 
01183 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
01184 {
01185     int64_t pos = avio_tell(pb);
01186     avio_wb32(pb, 0); /* size */
01187     ffio_wfourcc(pb, "mdia");
01188     mov_write_mdhd_tag(pb, track);
01189     mov_write_hdlr_tag(pb, track);
01190     mov_write_minf_tag(pb, track);
01191     return updateSize(pb, pos);
01192 }
01193 
01194 static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
01195 {
01196     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01197                                       track->timescale, AV_ROUND_UP);
01198     int version = duration < INT32_MAX ? 0 : 1;
01199 
01200     (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
01201     ffio_wfourcc(pb, "tkhd");
01202     avio_w8(pb, version);
01203     avio_wb24(pb, 0xf); /* flags (track enabled) */
01204     if (version == 1) {
01205         avio_wb64(pb, track->time);
01206         avio_wb64(pb, track->time);
01207     } else {
01208         avio_wb32(pb, track->time); /* creation time */
01209         avio_wb32(pb, track->time); /* modification time */
01210     }
01211     avio_wb32(pb, track->trackID); /* track-id */
01212     avio_wb32(pb, 0); /* reserved */
01213     (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
01214 
01215     avio_wb32(pb, 0); /* reserved */
01216     avio_wb32(pb, 0); /* reserved */
01217     avio_wb16(pb, 0); /* layer */
01218     avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
01219     /* Volume, only for audio */
01220     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01221         avio_wb16(pb, 0x0100);
01222     else
01223         avio_wb16(pb, 0);
01224     avio_wb16(pb, 0); /* reserved */
01225 
01226     /* Matrix structure */
01227     avio_wb32(pb, 0x00010000); /* reserved */
01228     avio_wb32(pb, 0x0); /* reserved */
01229     avio_wb32(pb, 0x0); /* reserved */
01230     avio_wb32(pb, 0x0); /* reserved */
01231     avio_wb32(pb, 0x00010000); /* reserved */
01232     avio_wb32(pb, 0x0); /* reserved */
01233     avio_wb32(pb, 0x0); /* reserved */
01234     avio_wb32(pb, 0x0); /* reserved */
01235     avio_wb32(pb, 0x40000000); /* reserved */
01236 
01237     /* Track width and height, for visual only */
01238     if(st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01239               track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
01240         if(track->mode == MODE_MOV) {
01241             avio_wb32(pb, track->enc->width << 16);
01242             avio_wb32(pb, track->height << 16);
01243         } else {
01244             double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01245             if(!sample_aspect_ratio || track->height != track->enc->height)
01246                 sample_aspect_ratio = 1;
01247             avio_wb32(pb, sample_aspect_ratio * track->enc->width*0x10000);
01248             avio_wb32(pb, track->height*0x10000);
01249         }
01250     }
01251     else {
01252         avio_wb32(pb, 0);
01253         avio_wb32(pb, 0);
01254     }
01255     return 0x5c;
01256 }
01257 
01258 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
01259 {
01260     int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
01261                                track->enc->sample_aspect_ratio.den);
01262 
01263     int64_t pos = avio_tell(pb);
01264 
01265     avio_wb32(pb, 0); /* size */
01266     ffio_wfourcc(pb, "tapt");
01267 
01268     avio_wb32(pb, 20);
01269     ffio_wfourcc(pb, "clef");
01270     avio_wb32(pb, 0);
01271     avio_wb32(pb, width << 16);
01272     avio_wb32(pb, track->enc->height << 16);
01273 
01274     avio_wb32(pb, 20);
01275     ffio_wfourcc(pb, "enof");
01276     avio_wb32(pb, 0);
01277     avio_wb32(pb, track->enc->width << 16);
01278     avio_wb32(pb, track->enc->height << 16);
01279 
01280     return updateSize(pb, pos);
01281 };
01282 
01283 // This box seems important for the psp playback ... without it the movie seems to hang
01284 static int mov_write_edts_tag(AVIOContext *pb, MOVTrack *track)
01285 {
01286     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01287                                       track->timescale, AV_ROUND_UP);
01288     int version = duration < INT32_MAX ? 0 : 1;
01289     int entry_size, entry_count, size;
01290     int64_t delay, start_ct = track->cluster[0].cts;
01291     delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
01292                            track->timescale, AV_ROUND_DOWN);
01293     version |= delay < INT32_MAX ? 0 : 1;
01294 
01295     entry_size = (version == 1) ? 20 : 12;
01296     entry_count = 1 + (delay > 0);
01297     size = 24 + entry_count * entry_size;
01298 
01299     /* write the atom data */
01300     avio_wb32(pb, size);
01301     ffio_wfourcc(pb, "edts");
01302     avio_wb32(pb, size - 8);
01303     ffio_wfourcc(pb, "elst");
01304     avio_w8(pb, version);
01305     avio_wb24(pb, 0); /* flags */
01306 
01307     avio_wb32(pb, entry_count);
01308     if (delay > 0) { /* add an empty edit to delay presentation */
01309         if (version == 1) {
01310             avio_wb64(pb, delay);
01311             avio_wb64(pb, -1);
01312         } else {
01313             avio_wb32(pb, delay);
01314             avio_wb32(pb, -1);
01315         }
01316         avio_wb32(pb, 0x00010000);
01317     }
01318 
01319     /* duration */
01320     if (version == 1) {
01321         avio_wb64(pb, duration);
01322         avio_wb64(pb, start_ct);
01323     } else {
01324         avio_wb32(pb, duration);
01325         avio_wb32(pb, start_ct);
01326     }
01327     avio_wb32(pb, 0x00010000);
01328     return size;
01329 }
01330 
01331 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
01332 {
01333     avio_wb32(pb, 20);   // size
01334     ffio_wfourcc(pb, "tref");
01335     avio_wb32(pb, 12);   // size (subatom)
01336     avio_wl32(pb, track->tref_tag);
01337     avio_wb32(pb, track->tref_id);
01338     return 20;
01339 }
01340 
01341 // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)
01342 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
01343 {
01344     avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
01345     ffio_wfourcc(pb, "uuid");
01346     ffio_wfourcc(pb, "USMT");
01347     avio_wb32(pb, 0x21d24fce);
01348     avio_wb32(pb, 0xbb88695c);
01349     avio_wb32(pb, 0xfac9c740);
01350     avio_wb32(pb, 0x1c);     // another size here!
01351     ffio_wfourcc(pb, "MTDT");
01352     avio_wb32(pb, 0x00010012);
01353     avio_wb32(pb, 0x0a);
01354     avio_wb32(pb, 0x55c40000);
01355     avio_wb32(pb, 0x1);
01356     avio_wb32(pb, 0x0);
01357     return 0x34;
01358 }
01359 
01360 static int mov_write_udta_sdp(AVIOContext *pb, AVFormatContext *ctx, int index)
01361 {
01362     char buf[1000] = "";
01363     int len;
01364 
01365     ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0]->codec, NULL, NULL, 0, 0, ctx);
01366     av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);
01367     len = strlen(buf);
01368 
01369     avio_wb32(pb, len + 24);
01370     ffio_wfourcc(pb, "udta");
01371     avio_wb32(pb, len + 16);
01372     ffio_wfourcc(pb, "hnti");
01373     avio_wb32(pb, len + 8);
01374     ffio_wfourcc(pb, "sdp ");
01375     avio_write(pb, buf, len);
01376     return len + 24;
01377 }
01378 
01379 static int mov_write_trak_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
01380 {
01381     int64_t pos = avio_tell(pb);
01382     avio_wb32(pb, 0); /* size */
01383     ffio_wfourcc(pb, "trak");
01384     mov_write_tkhd_tag(pb, track, st);
01385     if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS || track->cluster[0].dts)
01386         mov_write_edts_tag(pb, track);  // PSP Movies require edts box
01387     if (track->tref_tag)
01388         mov_write_tref_tag(pb, track);
01389     mov_write_mdia_tag(pb, track);
01390     if (track->mode == MODE_PSP)
01391         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box
01392     if (track->tag == MKTAG('r','t','p',' '))
01393         mov_write_udta_sdp(pb, track->rtp_ctx, track->trackID);
01394     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
01395         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01396         if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
01397             mov_write_tapt_tag(pb, track);
01398     };
01399     return updateSize(pb, pos);
01400 }
01401 
01402 #if 0
01403 /* TODO: Not sorted out, but not necessary either */
01404 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
01405 {
01406     avio_wb32(pb, 0x15); /* size */
01407     ffio_wfourcc(pb, "iods");
01408     avio_wb32(pb, 0);    /* version & flags */
01409     avio_wb16(pb, 0x1007);
01410     avio_w8(pb, 0);
01411     avio_wb16(pb, 0x4fff);
01412     avio_wb16(pb, 0xfffe);
01413     avio_wb16(pb, 0x01ff);
01414     return 0x15;
01415 }
01416 #endif
01417 
01418 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
01419 {
01420     int maxTrackID = 1, i;
01421     int64_t maxTrackLenTemp, maxTrackLen = 0;
01422     int version;
01423 
01424     for (i=0; i<mov->nb_streams; i++) {
01425         if(mov->tracks[i].entry > 0) {
01426             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,
01427                                              MOV_TIMESCALE,
01428                                              mov->tracks[i].timescale,
01429                                              AV_ROUND_UP);
01430             if(maxTrackLen < maxTrackLenTemp)
01431                 maxTrackLen = maxTrackLenTemp;
01432             if(maxTrackID < mov->tracks[i].trackID)
01433                 maxTrackID = mov->tracks[i].trackID;
01434         }
01435     }
01436 
01437     version = maxTrackLen < UINT32_MAX ? 0 : 1;
01438     (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
01439     ffio_wfourcc(pb, "mvhd");
01440     avio_w8(pb, version);
01441     avio_wb24(pb, 0); /* flags */
01442     if (version == 1) {
01443         avio_wb64(pb, mov->time);
01444         avio_wb64(pb, mov->time);
01445     } else {
01446         avio_wb32(pb, mov->time); /* creation time */
01447         avio_wb32(pb, mov->time); /* modification time */
01448     }
01449     avio_wb32(pb, MOV_TIMESCALE);
01450     (version == 1) ? avio_wb64(pb, maxTrackLen) : avio_wb32(pb, maxTrackLen); /* duration of longest track */
01451 
01452     avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
01453     avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
01454     avio_wb16(pb, 0); /* reserved */
01455     avio_wb32(pb, 0); /* reserved */
01456     avio_wb32(pb, 0); /* reserved */
01457 
01458     /* Matrix structure */
01459     avio_wb32(pb, 0x00010000); /* reserved */
01460     avio_wb32(pb, 0x0); /* reserved */
01461     avio_wb32(pb, 0x0); /* reserved */
01462     avio_wb32(pb, 0x0); /* reserved */
01463     avio_wb32(pb, 0x00010000); /* reserved */
01464     avio_wb32(pb, 0x0); /* reserved */
01465     avio_wb32(pb, 0x0); /* reserved */
01466     avio_wb32(pb, 0x0); /* reserved */
01467     avio_wb32(pb, 0x40000000); /* reserved */
01468 
01469     avio_wb32(pb, 0); /* reserved (preview time) */
01470     avio_wb32(pb, 0); /* reserved (preview duration) */
01471     avio_wb32(pb, 0); /* reserved (poster time) */
01472     avio_wb32(pb, 0); /* reserved (selection time) */
01473     avio_wb32(pb, 0); /* reserved (selection duration) */
01474     avio_wb32(pb, 0); /* reserved (current time) */
01475     avio_wb32(pb, maxTrackID+1); /* Next track id */
01476     return 0x6c;
01477 }
01478 
01479 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
01480                                      AVFormatContext *s)
01481 {
01482     avio_wb32(pb, 33); /* size */
01483     ffio_wfourcc(pb, "hdlr");
01484     avio_wb32(pb, 0);
01485     avio_wb32(pb, 0);
01486     ffio_wfourcc(pb, "mdir");
01487     ffio_wfourcc(pb, "appl");
01488     avio_wb32(pb, 0);
01489     avio_wb32(pb, 0);
01490     avio_w8(pb, 0);
01491     return 33;
01492 }
01493 
01494 /* helper function to write a data tag with the specified string as data */
01495 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
01496 {
01497     if(long_style){
01498         int size = 16 + strlen(data);
01499         avio_wb32(pb, size); /* size */
01500         ffio_wfourcc(pb, "data");
01501         avio_wb32(pb, 1);
01502         avio_wb32(pb, 0);
01503         avio_write(pb, data, strlen(data));
01504         return size;
01505     }else{
01506         if (!lang)
01507             lang = ff_mov_iso639_to_lang("und", 1);
01508         avio_wb16(pb, strlen(data)); /* string length */
01509         avio_wb16(pb, lang);
01510         avio_write(pb, data, strlen(data));
01511         return strlen(data) + 4;
01512     }
01513 }
01514 
01515 static int mov_write_string_tag(AVIOContext *pb, const char *name, const char *value, int lang, int long_style){
01516     int size = 0;
01517     if (value && value[0]) {
01518         int64_t pos = avio_tell(pb);
01519         avio_wb32(pb, 0); /* size */
01520         ffio_wfourcc(pb, name);
01521         mov_write_string_data_tag(pb, value, lang, long_style);
01522         size= updateSize(pb, pos);
01523     }
01524     return size;
01525 }
01526 
01527 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
01528                                      const char *name, const char *tag,
01529                                      int long_style)
01530 {
01531     int l, lang = 0, len, len2;
01532     AVDictionaryEntry *t, *t2 = NULL;
01533     char tag2[16];
01534 
01535     if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
01536         return 0;
01537 
01538     len = strlen(t->key);
01539     snprintf(tag2, sizeof(tag2), "%s-", tag);
01540     while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
01541         len2 = strlen(t2->key);
01542         if (len2 == len+4 && !strcmp(t->value, t2->value)
01543             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 1)) >= 0) {
01544             lang = l;
01545             break;
01546         }
01547     }
01548     return mov_write_string_tag(pb, name, t->value, lang, long_style);
01549 }
01550 
01551 /* iTunes track number */
01552 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
01553                               AVFormatContext *s)
01554 {
01555     AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
01556     int size = 0, track = t ? atoi(t->value) : 0;
01557     if (track) {
01558         avio_wb32(pb, 32); /* size */
01559         ffio_wfourcc(pb, "trkn");
01560             avio_wb32(pb, 24); /* size */
01561             ffio_wfourcc(pb, "data");
01562             avio_wb32(pb, 0);        // 8 bytes empty
01563             avio_wb32(pb, 0);
01564             avio_wb16(pb, 0);        // empty
01565             avio_wb16(pb, track);    // track number
01566             avio_wb16(pb, 0);        // total track number
01567             avio_wb16(pb, 0);        // empty
01568         size = 32;
01569     }
01570     return size;
01571 }
01572 
01573 /* iTunes meta data list */
01574 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
01575                               AVFormatContext *s)
01576 {
01577     int64_t pos = avio_tell(pb);
01578     avio_wb32(pb, 0); /* size */
01579     ffio_wfourcc(pb, "ilst");
01580     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);
01581     mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);
01582     mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
01583     mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
01584     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);
01585     mov_write_string_metadata(s, pb, "\251day", "date"     , 1);
01586     mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
01587     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);
01588     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);
01589     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
01590     mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
01591     mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);
01592     mov_write_string_metadata(s, pb, "desc",    "description",1);
01593     mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);
01594     mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);
01595     mov_write_string_metadata(s, pb, "tven",    "episode_id",1);
01596     mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);
01597     mov_write_trkn_tag(pb, mov, s);
01598     return updateSize(pb, pos);
01599 }
01600 
01601 /* iTunes meta data tag */
01602 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
01603                               AVFormatContext *s)
01604 {
01605     int size = 0;
01606     int64_t pos = avio_tell(pb);
01607     avio_wb32(pb, 0); /* size */
01608     ffio_wfourcc(pb, "meta");
01609     avio_wb32(pb, 0);
01610     mov_write_itunes_hdlr_tag(pb, mov, s);
01611     mov_write_ilst_tag(pb, mov, s);
01612     size = updateSize(pb, pos);
01613     return size;
01614 }
01615 
01616 static int utf8len(const uint8_t *b)
01617 {
01618     int len=0;
01619     int val;
01620     while(*b){
01621         GET_UTF8(val, *b++, return -1;)
01622         len++;
01623     }
01624     return len;
01625 }
01626 
01627 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
01628 {
01629     int val;
01630     while(*b){
01631         GET_UTF8(val, *b++, return -1;)
01632         avio_wb16(pb, val);
01633     }
01634     avio_wb16(pb, 0x00);
01635     return 0;
01636 }
01637 
01638 static uint16_t language_code(const char *str)
01639 {
01640     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);
01641 }
01642 
01643 static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
01644                                   const char *tag, const char *str)
01645 {
01646     int64_t pos = avio_tell(pb);
01647     AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
01648     if (!t || !utf8len(t->value))
01649         return 0;
01650     avio_wb32(pb, 0);   /* size */
01651     ffio_wfourcc(pb, tag); /* type */
01652     avio_wb32(pb, 0);   /* version + flags */
01653     if (!strcmp(tag, "yrrc"))
01654         avio_wb16(pb, atoi(t->value));
01655     else {
01656         avio_wb16(pb, language_code("eng")); /* language */
01657         avio_write(pb, t->value, strlen(t->value)+1); /* UTF8 string value */
01658         if (!strcmp(tag, "albm") &&
01659             (t = av_dict_get(s->metadata, "track", NULL, 0)))
01660             avio_w8(pb, atoi(t->value));
01661     }
01662     return updateSize(pb, pos);
01663 }
01664 
01665 static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
01666 {
01667     int64_t pos = avio_tell(pb);
01668     int i, nb_chapters = FFMIN(s->nb_chapters, 255);
01669 
01670     avio_wb32(pb, 0);            // size
01671     ffio_wfourcc(pb, "chpl");
01672     avio_wb32(pb, 0x01000000);   // version + flags
01673     avio_wb32(pb, 0);            // unknown
01674     avio_w8(pb, nb_chapters);
01675 
01676     for (i = 0; i < nb_chapters; i++) {
01677         AVChapter *c = s->chapters[i];
01678         AVDictionaryEntry *t;
01679         avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
01680 
01681         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
01682             int len = FFMIN(strlen(t->value), 255);
01683             avio_w8(pb, len);
01684             avio_write(pb, t->value, len);
01685         } else
01686             avio_w8(pb, 0);
01687     }
01688     return updateSize(pb, pos);
01689 }
01690 
01691 static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
01692                               AVFormatContext *s)
01693 {
01694     AVIOContext *pb_buf;
01695     int i, ret, size;
01696     uint8_t *buf;
01697 
01698     for (i = 0; i < s->nb_streams; i++)
01699         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
01700             return 0;
01701         }
01702 
01703     ret = avio_open_dyn_buf(&pb_buf);
01704     if(ret < 0)
01705         return ret;
01706 
01707         if (mov->mode & MODE_3GP) {
01708             mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
01709             mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
01710             mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
01711             mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
01712             mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
01713             mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
01714             mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
01715             mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
01716         } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
01717             mov_write_string_metadata(s, pb_buf, "\251ART", "artist"     , 0);
01718             mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);
01719             mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);
01720             mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);
01721             mov_write_string_metadata(s, pb_buf, "\251day", "date"       , 0);
01722             mov_write_string_metadata(s, pb_buf, "\251swr", "encoder"    , 0);
01723             mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);
01724             mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);
01725             mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);
01726         } else {
01727             /* iTunes meta data */
01728             mov_write_meta_tag(pb_buf, mov, s);
01729         }
01730 
01731         if (s->nb_chapters)
01732             mov_write_chpl_tag(pb_buf, s);
01733 
01734     if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
01735         avio_wb32(pb, size+8);
01736         ffio_wfourcc(pb, "udta");
01737         avio_write(pb, buf, size);
01738     }
01739     av_free(buf);
01740 
01741     return 0;
01742 }
01743 
01744 static void mov_write_psp_udta_tag(AVIOContext *pb,
01745                                   const char *str, const char *lang, int type)
01746 {
01747     int len = utf8len(str)+1;
01748     if(len<=0)
01749         return;
01750     avio_wb16(pb, len*2+10);            /* size */
01751     avio_wb32(pb, type);                /* type */
01752     avio_wb16(pb, language_code(lang)); /* language */
01753     avio_wb16(pb, 0x01);                /* ? */
01754     ascii_to_wc(pb, str);
01755 }
01756 
01757 static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
01758 {
01759     AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
01760     int64_t pos, pos2;
01761 
01762     if (title) {
01763         pos = avio_tell(pb);
01764         avio_wb32(pb, 0); /* size placeholder*/
01765         ffio_wfourcc(pb, "uuid");
01766         ffio_wfourcc(pb, "USMT");
01767         avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
01768         avio_wb32(pb, 0xbb88695c);
01769         avio_wb32(pb, 0xfac9c740);
01770 
01771         pos2 = avio_tell(pb);
01772         avio_wb32(pb, 0); /* size placeholder*/
01773         ffio_wfourcc(pb, "MTDT");
01774         avio_wb16(pb, 4);
01775 
01776         // ?
01777         avio_wb16(pb, 0x0C);                 /* size */
01778         avio_wb32(pb, 0x0B);                 /* type */
01779         avio_wb16(pb, language_code("und")); /* language */
01780         avio_wb16(pb, 0x0);                  /* ? */
01781         avio_wb16(pb, 0x021C);               /* data */
01782 
01783         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);
01784         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);
01785 //        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);
01786         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
01787 
01788         updateSize(pb, pos2);
01789         return updateSize(pb, pos);
01790     }
01791 
01792     return 0;
01793 }
01794 
01795 static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
01796                               AVFormatContext *s)
01797 {
01798     int i;
01799     int64_t pos = avio_tell(pb);
01800     avio_wb32(pb, 0); /* size placeholder*/
01801     ffio_wfourcc(pb, "moov");
01802 
01803     for (i=0; i<mov->nb_streams; i++) {
01804         if(mov->tracks[i].entry <= 0) continue;
01805 
01806         mov->tracks[i].time = mov->time;
01807         mov->tracks[i].trackID = i+1;
01808     }
01809 
01810     if (mov->chapter_track)
01811         for (i=0; i<s->nb_streams; i++) {
01812             mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
01813             mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].trackID;
01814         }
01815     for (i = 0; i < mov->nb_streams; i++) {
01816         if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
01817             mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
01818             mov->tracks[i].tref_id =
01819                 mov->tracks[mov->tracks[i].src_track].trackID;
01820         }
01821     }
01822 
01823     mov_write_mvhd_tag(pb, mov);
01824     //mov_write_iods_tag(pb, mov);
01825     for (i=0; i<mov->nb_streams; i++) {
01826         if(mov->tracks[i].entry > 0) {
01827             mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
01828         }
01829     }
01830 
01831     if (mov->mode == MODE_PSP)
01832         mov_write_uuidusmt_tag(pb, s);
01833     else
01834         mov_write_udta_tag(pb, mov, s);
01835 
01836     return updateSize(pb, pos);
01837 }
01838 
01839 static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
01840 {
01841     avio_wb32(pb, 8);    // placeholder for extended size field (64 bit)
01842     ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
01843 
01844     mov->mdat_pos = avio_tell(pb);
01845     avio_wb32(pb, 0); /* size placeholder*/
01846     ffio_wfourcc(pb, "mdat");
01847     return 0;
01848 }
01849 
01850 /* TODO: This needs to be more general */
01851 static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
01852 {
01853     MOVMuxContext *mov = s->priv_data;
01854     int64_t pos = avio_tell(pb);
01855     int has_h264 = 0, has_video = 0;
01856     int minor = 0x200;
01857     int i;
01858 
01859     for (i = 0; i < s->nb_streams; i++) {
01860         AVStream *st = s->streams[i];
01861         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
01862             has_video = 1;
01863         if (st->codec->codec_id == CODEC_ID_H264)
01864             has_h264 = 1;
01865     }
01866 
01867     avio_wb32(pb, 0); /* size */
01868     ffio_wfourcc(pb, "ftyp");
01869 
01870     if (mov->mode == MODE_3GP) {
01871         ffio_wfourcc(pb, has_h264 ? "3gp6"  : "3gp4");
01872         minor =     has_h264 ?   0x100 :   0x200;
01873     } else if (mov->mode & MODE_3G2) {
01874         ffio_wfourcc(pb, has_h264 ? "3g2b"  : "3g2a");
01875         minor =     has_h264 ? 0x20000 : 0x10000;
01876     }else if (mov->mode == MODE_PSP)
01877         ffio_wfourcc(pb, "MSNV");
01878     else if (mov->mode == MODE_MP4)
01879         ffio_wfourcc(pb, "isom");
01880     else if (mov->mode == MODE_IPOD)
01881         ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
01882     else
01883         ffio_wfourcc(pb, "qt  ");
01884 
01885     avio_wb32(pb, minor);
01886 
01887     if(mov->mode == MODE_MOV)
01888         ffio_wfourcc(pb, "qt  ");
01889     else{
01890         ffio_wfourcc(pb, "isom");
01891         ffio_wfourcc(pb, "iso2");
01892         if(has_h264)
01893             ffio_wfourcc(pb, "avc1");
01894     }
01895 
01896     if (mov->mode == MODE_3GP)
01897         ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
01898     else if (mov->mode & MODE_3G2)
01899         ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
01900     else if (mov->mode == MODE_PSP)
01901         ffio_wfourcc(pb, "MSNV");
01902     else if (mov->mode == MODE_MP4)
01903         ffio_wfourcc(pb, "mp41");
01904     return updateSize(pb, pos);
01905 }
01906 
01907 static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
01908 {
01909     AVCodecContext *VideoCodec = s->streams[0]->codec;
01910     AVCodecContext *AudioCodec = s->streams[1]->codec;
01911     int AudioRate = AudioCodec->sample_rate;
01912     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);
01913     int audio_kbitrate= AudioCodec->bit_rate / 1000;
01914     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);
01915 
01916     avio_wb32(pb, 0x94); /* size */
01917     ffio_wfourcc(pb, "uuid");
01918     ffio_wfourcc(pb, "PROF");
01919 
01920     avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
01921     avio_wb32(pb, 0xbb88695c);
01922     avio_wb32(pb, 0xfac9c740);
01923 
01924     avio_wb32(pb, 0x0);  /* ? */
01925     avio_wb32(pb, 0x3);  /* 3 sections ? */
01926 
01927     avio_wb32(pb, 0x14); /* size */
01928     ffio_wfourcc(pb, "FPRF");
01929     avio_wb32(pb, 0x0);  /* ? */
01930     avio_wb32(pb, 0x0);  /* ? */
01931     avio_wb32(pb, 0x0);  /* ? */
01932 
01933     avio_wb32(pb, 0x2c);  /* size */
01934     ffio_wfourcc(pb, "APRF");/* audio */
01935     avio_wb32(pb, 0x0);
01936     avio_wb32(pb, 0x2);   /* TrackID */
01937     ffio_wfourcc(pb, "mp4a");
01938     avio_wb32(pb, 0x20f);
01939     avio_wb32(pb, 0x0);
01940     avio_wb32(pb, audio_kbitrate);
01941     avio_wb32(pb, audio_kbitrate);
01942     avio_wb32(pb, AudioRate);
01943     avio_wb32(pb, AudioCodec->channels);
01944 
01945     avio_wb32(pb, 0x34);  /* size */
01946     ffio_wfourcc(pb, "VPRF");   /* video */
01947     avio_wb32(pb, 0x0);
01948     avio_wb32(pb, 0x1);    /* TrackID */
01949     if (VideoCodec->codec_id == CODEC_ID_H264) {
01950         ffio_wfourcc(pb, "avc1");
01951         avio_wb16(pb, 0x014D);
01952         avio_wb16(pb, 0x0015);
01953     } else {
01954         ffio_wfourcc(pb, "mp4v");
01955         avio_wb16(pb, 0x0000);
01956         avio_wb16(pb, 0x0103);
01957     }
01958     avio_wb32(pb, 0x0);
01959     avio_wb32(pb, video_kbitrate);
01960     avio_wb32(pb, video_kbitrate);
01961     avio_wb32(pb, FrameRate);
01962     avio_wb32(pb, FrameRate);
01963     avio_wb16(pb, VideoCodec->width);
01964     avio_wb16(pb, VideoCodec->height);
01965     avio_wb32(pb, 0x010001); /* ? */
01966 }
01967 
01968 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
01969 {
01970     uint32_t c = -1;
01971     int i, closed_gop = 0;
01972 
01973     for (i = 0; i < pkt->size - 4; i++) {
01974         c = (c<<8) + pkt->data[i];
01975         if (c == 0x1b8) { // gop
01976             closed_gop = pkt->data[i+4]>>6 & 0x01;
01977         } else if (c == 0x100) { // pic
01978             int temp_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
01979             if (!temp_ref || closed_gop) // I picture is not reordered
01980                 *flags = MOV_SYNC_SAMPLE;
01981             else
01982                 *flags = MOV_PARTIAL_SYNC_SAMPLE;
01983             break;
01984         }
01985     }
01986     return 0;
01987 }
01988 
01989 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
01990 {
01991     MOVMuxContext *mov = s->priv_data;
01992     AVIOContext *pb = s->pb;
01993     MOVTrack *trk = &mov->tracks[pkt->stream_index];
01994     AVCodecContext *enc = trk->enc;
01995     unsigned int samplesInChunk = 0;
01996     int size= pkt->size;
01997 
01998     if (!s->pb->seekable) return 0; /* Can't handle that */
01999     if (!size) return 0; /* Discard 0 sized packets */
02000 
02001     if (enc->codec_id == CODEC_ID_AMR_NB) {
02002         /* We must find out how many AMR blocks there are in one packet */
02003         static uint16_t packed_size[16] =
02004             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
02005         int len = 0;
02006 
02007         while (len < size && samplesInChunk < 100) {
02008             len += packed_size[(pkt->data[len] >> 3) & 0x0F];
02009             samplesInChunk++;
02010         }
02011         if(samplesInChunk > 1){
02012             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
02013             return -1;
02014         }
02015     } else if (enc->codec_id == CODEC_ID_ADPCM_MS ||
02016                enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
02017         samplesInChunk = enc->frame_size;
02018     } else if (trk->sampleSize)
02019         samplesInChunk = size/trk->sampleSize;
02020     else
02021         samplesInChunk = 1;
02022 
02023     /* copy extradata if it exists */
02024     if (trk->vosLen == 0 && enc->extradata_size > 0) {
02025         trk->vosLen = enc->extradata_size;
02026         trk->vosData = av_malloc(trk->vosLen);
02027         memcpy(trk->vosData, enc->extradata, trk->vosLen);
02028     }
02029 
02030     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {
02031         /* from x264 or from bytestream h264 */
02032         /* nal reformating needed */
02033         size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
02034     } else {
02035         avio_write(pb, pkt->data, size);
02036     }
02037 
02038     if ((enc->codec_id == CODEC_ID_DNXHD ||
02039          enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {
02040         /* copy frame to create needed atoms */
02041         trk->vosLen = size;
02042         trk->vosData = av_malloc(size);
02043         if (!trk->vosData)
02044             return AVERROR(ENOMEM);
02045         memcpy(trk->vosData, pkt->data, size);
02046     }
02047 
02048     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {
02049         trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));
02050         if (!trk->cluster)
02051             return -1;
02052     }
02053 
02054     trk->cluster[trk->entry].pos = avio_tell(pb) - size;
02055     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
02056     trk->cluster[trk->entry].size = size;
02057     trk->cluster[trk->entry].entries = samplesInChunk;
02058     trk->cluster[trk->entry].dts = pkt->dts;
02059     trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;
02060 
02061     if (pkt->pts == AV_NOPTS_VALUE) {
02062         av_log(s, AV_LOG_WARNING, "pts has no value\n");
02063         pkt->pts = pkt->dts;
02064     }
02065     if (pkt->dts != pkt->pts)
02066         trk->flags |= MOV_TRACK_CTTS;
02067     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
02068     trk->cluster[trk->entry].flags = 0;
02069     if (pkt->flags & AV_PKT_FLAG_KEY) {
02070         if (mov->mode == MODE_MOV && enc->codec_id == CODEC_ID_MPEG2VIDEO &&
02071             trk->entry > 0) { // force sync sample for the first key frame
02072             mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
02073             if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
02074                 trk->flags |= MOV_TRACK_STPS;
02075         } else {
02076             trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
02077         }
02078         if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
02079             trk->hasKeyframes++;
02080     }
02081     trk->entry++;
02082     trk->sampleCount += samplesInChunk;
02083     mov->mdat_size += size;
02084 
02085     avio_flush(pb);
02086 
02087     if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
02088         ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry);
02089     return 0;
02090 }
02091 
02092 // QuickTime chapters involve an additional text track with the chapter names
02093 // as samples, and a tref pointing from the other tracks to the chapter one.
02094 static void mov_create_chapter_track(AVFormatContext *s, int tracknum)
02095 {
02096     MOVMuxContext *mov = s->priv_data;
02097     MOVTrack *track = &mov->tracks[tracknum];
02098     AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
02099     int i, len;
02100 
02101     track->mode = mov->mode;
02102     track->tag = MKTAG('t','e','x','t');
02103     track->timescale = MOV_TIMESCALE;
02104     track->enc = avcodec_alloc_context();
02105     track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
02106 
02107     for (i = 0; i < s->nb_chapters; i++) {
02108         AVChapter *c = s->chapters[i];
02109         AVDictionaryEntry *t;
02110 
02111         int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
02112         pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
02113         pkt.duration = end - pkt.dts;
02114 
02115         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
02116             len = strlen(t->value);
02117             pkt.size = len+2;
02118             pkt.data = av_malloc(pkt.size);
02119             AV_WB16(pkt.data, len);
02120             memcpy(pkt.data+2, t->value, len);
02121             ff_mov_write_packet(s, &pkt);
02122             av_freep(&pkt.data);
02123         }
02124     }
02125 }
02126 
02127 static int mov_write_header(AVFormatContext *s)
02128 {
02129     AVIOContext *pb = s->pb;
02130     MOVMuxContext *mov = s->priv_data;
02131     int i, hint_track = 0;
02132 
02133     if (!s->pb->seekable) {
02134         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
02135         return -1;
02136     }
02137 
02138     /* Default mode == MP4 */
02139     mov->mode = MODE_MP4;
02140 
02141     if (s->oformat != NULL) {
02142         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
02143         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
02144         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
02145         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
02146         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
02147 
02148         mov_write_ftyp_tag(pb,s);
02149         if (mov->mode == MODE_PSP) {
02150             if (s->nb_streams != 2) {
02151                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
02152                 return -1;
02153             }
02154             mov_write_uuidprof_tag(pb,s);
02155         }
02156     }
02157 
02158     mov->nb_streams = s->nb_streams;
02159     if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)
02160         mov->chapter_track = mov->nb_streams++;
02161 
02162 #if FF_API_FLAG_RTP_HINT
02163     if (s->flags & AVFMT_FLAG_RTP_HINT) {
02164         av_log(s, AV_LOG_WARNING, "The RTP_HINT flag is deprecated, enable it "
02165                                   "via the -movflags rtphint muxer option "
02166                                   "instead.\n");
02167         mov->flags |= FF_MOV_FLAG_RTP_HINT;
02168     }
02169 #endif
02170     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02171         /* Add hint tracks for each audio and video stream */
02172         hint_track = mov->nb_streams;
02173         for (i = 0; i < s->nb_streams; i++) {
02174             AVStream *st = s->streams[i];
02175             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02176                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02177                 mov->nb_streams++;
02178             }
02179         }
02180     }
02181 
02182     mov->tracks = av_mallocz(mov->nb_streams*sizeof(*mov->tracks));
02183     if (!mov->tracks)
02184         return AVERROR(ENOMEM);
02185 
02186     for(i=0; i<s->nb_streams; i++){
02187         AVStream *st= s->streams[i];
02188         MOVTrack *track= &mov->tracks[i];
02189         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
02190 
02191         track->enc = st->codec;
02192         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
02193         if (track->language < 0)
02194             track->language = 0;
02195         track->mode = mov->mode;
02196         track->tag = mov_find_codec_tag(s, track);
02197         if (!track->tag) {
02198             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
02199                    "codec not currently supported in container\n", i);
02200             goto error;
02201         }
02202         /* If hinting of this track is enabled by a later hint track,
02203          * this is updated. */
02204         track->hint_track = -1;
02205         if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
02206             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
02207                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
02208                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
02209                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
02210                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
02211                     goto error;
02212                 }
02213                 track->height = track->tag>>24 == 'n' ? 486 : 576;
02214             }
02215             track->timescale = st->codec->time_base.den;
02216             if (track->mode == MODE_MOV && track->timescale > 100000)
02217                 av_log(s, AV_LOG_WARNING,
02218                        "WARNING codec timebase is very high. If duration is too long,\n"
02219                        "file may not be playable by quicktime. Specify a shorter timebase\n"
02220                        "or choose different container.\n");
02221         }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
02222             track->timescale = st->codec->sample_rate;
02223             if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {
02224                 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);
02225                 goto error;
02226             }else if(st->codec->codec_id == CODEC_ID_ADPCM_MS ||
02227                      st->codec->codec_id == CODEC_ID_ADPCM_IMA_WAV){
02228                 if (!st->codec->block_align) {
02229                     av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
02230                     goto error;
02231                 }
02232                 track->sampleSize = st->codec->block_align;
02233             }else if(st->codec->frame_size > 1){ /* assume compressed audio */
02234                 track->audio_vbr = 1;
02235             }else{
02236                 st->codec->frame_size = 1;
02237                 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
02238             }
02239             if (track->mode != MODE_MOV) {
02240                 if (track->timescale > UINT16_MAX) {
02241                     av_log(s, AV_LOG_ERROR, "track %d: output format does not support "
02242                            "sample rate %dhz\n", i, track->timescale);
02243                     goto error;
02244                 }
02245                 if (track->enc->codec_id == CODEC_ID_MP3 && track->timescale < 16000) {
02246                     av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
02247                            i, track->enc->sample_rate);
02248                     goto error;
02249                 }
02250             }
02251         }else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){
02252             track->timescale = st->codec->time_base.den;
02253         }
02254         if (!track->height)
02255             track->height = st->codec->height;
02256 
02257         av_set_pts_info(st, 64, 1, track->timescale);
02258     }
02259 
02260     mov_write_mdat_tag(pb, mov);
02261     mov->time = s->timestamp + 0x7C25B080; //1970 based -> 1904 based
02262 
02263     if (mov->chapter_track)
02264         mov_create_chapter_track(s, mov->chapter_track);
02265 
02266     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02267         /* Initialize the hint tracks for each audio and video stream */
02268         for (i = 0; i < s->nb_streams; i++) {
02269             AVStream *st = s->streams[i];
02270             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02271                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02272                 ff_mov_init_hinting(s, hint_track, i);
02273                 hint_track++;
02274             }
02275         }
02276     }
02277 
02278     avio_flush(pb);
02279 
02280     return 0;
02281  error:
02282     av_freep(&mov->tracks);
02283     return -1;
02284 }
02285 
02286 static int mov_write_trailer(AVFormatContext *s)
02287 {
02288     MOVMuxContext *mov = s->priv_data;
02289     AVIOContext *pb = s->pb;
02290     int res = 0;
02291     int i;
02292 
02293     int64_t moov_pos = avio_tell(pb);
02294 
02295     /* Write size of mdat tag */
02296     if (mov->mdat_size+8 <= UINT32_MAX) {
02297         avio_seek(pb, mov->mdat_pos, SEEK_SET);
02298         avio_wb32(pb, mov->mdat_size+8);
02299     } else {
02300         /* overwrite 'wide' placeholder atom */
02301         avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
02302         avio_wb32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */
02303         ffio_wfourcc(pb, "mdat");
02304         avio_wb64(pb, mov->mdat_size+16);
02305     }
02306     avio_seek(pb, moov_pos, SEEK_SET);
02307 
02308     mov_write_moov_tag(pb, mov, s);
02309 
02310     if (mov->chapter_track)
02311         av_freep(&mov->tracks[mov->chapter_track].enc);
02312 
02313     for (i=0; i<mov->nb_streams; i++) {
02314         if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
02315             ff_mov_close_hinting(&mov->tracks[i]);
02316         av_freep(&mov->tracks[i].cluster);
02317 
02318         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
02319 
02320     }
02321 
02322     avio_flush(pb);
02323 
02324     av_freep(&mov->tracks);
02325 
02326     return res;
02327 }
02328 
02329 #if CONFIG_MOV_MUXER
02330 AVOutputFormat ff_mov_muxer = {
02331     "mov",
02332     NULL_IF_CONFIG_SMALL("MOV format"),
02333     NULL,
02334     "mov",
02335     sizeof(MOVMuxContext),
02336     CODEC_ID_AAC,
02337     CODEC_ID_MPEG4,
02338     mov_write_header,
02339     ff_mov_write_packet,
02340     mov_write_trailer,
02341     .flags = AVFMT_GLOBALHEADER,
02342     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},
02343     .priv_class = &mov_muxer_class,
02344 };
02345 #endif
02346 #if CONFIG_TGP_MUXER
02347 AVOutputFormat ff_tgp_muxer = {
02348     "3gp",
02349     NULL_IF_CONFIG_SMALL("3GP format"),
02350     NULL,
02351     "3gp",
02352     sizeof(MOVMuxContext),
02353     CODEC_ID_AMR_NB,
02354     CODEC_ID_H263,
02355     mov_write_header,
02356     ff_mov_write_packet,
02357     mov_write_trailer,
02358     .flags = AVFMT_GLOBALHEADER,
02359     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
02360     .priv_class = &mov_muxer_class,
02361 };
02362 #endif
02363 #if CONFIG_MP4_MUXER
02364 AVOutputFormat ff_mp4_muxer = {
02365     "mp4",
02366     NULL_IF_CONFIG_SMALL("MP4 format"),
02367     "application/mp4",
02368     "mp4",
02369     sizeof(MOVMuxContext),
02370     CODEC_ID_AAC,
02371     CODEC_ID_MPEG4,
02372     mov_write_header,
02373     ff_mov_write_packet,
02374     mov_write_trailer,
02375     .flags = AVFMT_GLOBALHEADER,
02376     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
02377     .priv_class = &mov_muxer_class,
02378 };
02379 #endif
02380 #if CONFIG_PSP_MUXER
02381 AVOutputFormat ff_psp_muxer = {
02382     "psp",
02383     NULL_IF_CONFIG_SMALL("PSP MP4 format"),
02384     NULL,
02385     "mp4,psp",
02386     sizeof(MOVMuxContext),
02387     CODEC_ID_AAC,
02388     CODEC_ID_MPEG4,
02389     mov_write_header,
02390     ff_mov_write_packet,
02391     mov_write_trailer,
02392     .flags = AVFMT_GLOBALHEADER,
02393     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
02394     .priv_class = &mov_muxer_class,
02395 };
02396 #endif
02397 #if CONFIG_TG2_MUXER
02398 AVOutputFormat ff_tg2_muxer = {
02399     "3g2",
02400     NULL_IF_CONFIG_SMALL("3GP2 format"),
02401     NULL,
02402     "3g2",
02403     sizeof(MOVMuxContext),
02404     CODEC_ID_AMR_NB,
02405     CODEC_ID_H263,
02406     mov_write_header,
02407     ff_mov_write_packet,
02408     mov_write_trailer,
02409     .flags = AVFMT_GLOBALHEADER,
02410     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
02411     .priv_class = &mov_muxer_class,
02412 };
02413 #endif
02414 #if CONFIG_IPOD_MUXER
02415 AVOutputFormat ff_ipod_muxer = {
02416     "ipod",
02417     NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),
02418     "application/mp4",
02419     "m4v,m4a",
02420     sizeof(MOVMuxContext),
02421     CODEC_ID_AAC,
02422     CODEC_ID_H264,
02423     mov_write_header,
02424     ff_mov_write_packet,
02425     mov_write_trailer,
02426     .flags = AVFMT_GLOBALHEADER,
02427     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
02428     .priv_class = &mov_muxer_class,
02429 };
02430 #endif