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/intfloat.h"
00036 #include "libavutil/mathematics.h"
00037 #include "libavutil/opt.h"
00038 #include "libavutil/dict.h"
00039 #include "rtpenc.h"
00040 #include "mov_chan.h"
00041 
00042 #undef NDEBUG
00043 #include <assert.h>
00044 
00045 static const AVOption options[] = {
00046     { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00047     { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
00048     FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
00049     { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
00050     { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
00051     { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
00052     { NULL },
00053 };
00054 
00055 #define MOV_CLASS(flavor)\
00056 static const AVClass flavor ## _muxer_class = {\
00057     .class_name = #flavor " muxer",\
00058     .item_name  = av_default_item_name,\
00059     .option     = options,\
00060     .version    = LIBAVUTIL_VERSION_INT,\
00061 };
00062 
00063 //FIXME support 64 bit variant with wide placeholders
00064 static int64_t updateSize(AVIOContext *pb, int64_t pos)
00065 {
00066     int64_t curpos = avio_tell(pb);
00067     avio_seek(pb, pos, SEEK_SET);
00068     avio_wb32(pb, curpos - pos); /* rewrite size */
00069     avio_seek(pb, curpos, SEEK_SET);
00070 
00071     return curpos - pos;
00072 }
00073 
00074 /* Chunk offset atom */
00075 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
00076 {
00077     int i;
00078     int mode64 = 0; //   use 32 bit size variant if possible
00079     int64_t pos = avio_tell(pb);
00080     avio_wb32(pb, 0); /* size */
00081     if (pos > UINT32_MAX) {
00082         mode64 = 1;
00083         ffio_wfourcc(pb, "co64");
00084     } else
00085         ffio_wfourcc(pb, "stco");
00086     avio_wb32(pb, 0); /* version & flags */
00087     avio_wb32(pb, track->entry); /* entry count */
00088     for (i=0; i<track->entry; i++) {
00089         if(mode64 == 1)
00090             avio_wb64(pb, track->cluster[i].pos);
00091         else
00092             avio_wb32(pb, track->cluster[i].pos);
00093     }
00094     return updateSize(pb, pos);
00095 }
00096 
00097 /* Sample size atom */
00098 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
00099 {
00100     int equalChunks = 1;
00101     int i, j, entries = 0, tst = -1, oldtst = -1;
00102 
00103     int64_t pos = avio_tell(pb);
00104     avio_wb32(pb, 0); /* size */
00105     ffio_wfourcc(pb, "stsz");
00106     avio_wb32(pb, 0); /* version & flags */
00107 
00108     for (i=0; i<track->entry; i++) {
00109         tst = track->cluster[i].size/track->cluster[i].entries;
00110         if(oldtst != -1 && tst != oldtst) {
00111             equalChunks = 0;
00112         }
00113         oldtst = tst;
00114         entries += track->cluster[i].entries;
00115     }
00116     if (equalChunks) {
00117         int sSize = track->cluster[0].size/track->cluster[0].entries;
00118         sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
00119         avio_wb32(pb, sSize); // sample size
00120         avio_wb32(pb, entries); // sample count
00121     }
00122     else {
00123         avio_wb32(pb, 0); // sample size
00124         avio_wb32(pb, entries); // sample count
00125         for (i=0; i<track->entry; i++) {
00126             for (j=0; j<track->cluster[i].entries; j++) {
00127                 avio_wb32(pb, track->cluster[i].size /
00128                          track->cluster[i].entries);
00129             }
00130         }
00131     }
00132     return updateSize(pb, pos);
00133 }
00134 
00135 /* Sample to chunk atom */
00136 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
00137 {
00138     int index = 0, oldval = -1, i;
00139     int64_t entryPos, curpos;
00140 
00141     int64_t pos = avio_tell(pb);
00142     avio_wb32(pb, 0); /* size */
00143     ffio_wfourcc(pb, "stsc");
00144     avio_wb32(pb, 0); // version & flags
00145     entryPos = avio_tell(pb);
00146     avio_wb32(pb, track->entry); // entry count
00147     for (i=0; i<track->entry; i++) {
00148         if(oldval != track->cluster[i].samplesInChunk)
00149         {
00150             avio_wb32(pb, i+1); // first chunk
00151             avio_wb32(pb, track->cluster[i].samplesInChunk); // samples per chunk
00152             avio_wb32(pb, 0x1); // sample description index
00153             oldval = track->cluster[i].samplesInChunk;
00154             index++;
00155         }
00156     }
00157     curpos = avio_tell(pb);
00158     avio_seek(pb, entryPos, SEEK_SET);
00159     avio_wb32(pb, index); // rewrite size
00160     avio_seek(pb, curpos, SEEK_SET);
00161 
00162     return updateSize(pb, pos);
00163 }
00164 
00165 /* Sync sample atom */
00166 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
00167 {
00168     int64_t curpos, entryPos;
00169     int i, index = 0;
00170     int64_t pos = avio_tell(pb);
00171     avio_wb32(pb, 0); // size
00172     ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
00173     avio_wb32(pb, 0); // version & flags
00174     entryPos = avio_tell(pb);
00175     avio_wb32(pb, track->entry); // entry count
00176     for (i=0; i<track->entry; i++) {
00177         if (track->cluster[i].flags & flag) {
00178             avio_wb32(pb, i+1);
00179             index++;
00180         }
00181     }
00182     curpos = avio_tell(pb);
00183     avio_seek(pb, entryPos, SEEK_SET);
00184     avio_wb32(pb, index); // rewrite size
00185     avio_seek(pb, curpos, SEEK_SET);
00186     return updateSize(pb, pos);
00187 }
00188 
00189 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
00190 {
00191     avio_wb32(pb, 0x11); /* size */
00192     if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
00193     else                         ffio_wfourcc(pb, "damr");
00194     ffio_wfourcc(pb, "FFMP");
00195     avio_w8(pb, 0); /* decoder version */
00196 
00197     avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
00198     avio_w8(pb, 0x00); /* Mode change period (no restriction) */
00199     avio_w8(pb, 0x01); /* Frames per sample */
00200     return 0x11;
00201 }
00202 
00203 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
00204 {
00205     GetBitContext gbc;
00206     PutBitContext pbc;
00207     uint8_t buf[3];
00208     int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
00209 
00210     if (track->vosLen < 7)
00211         return -1;
00212 
00213     avio_wb32(pb, 11);
00214     ffio_wfourcc(pb, "dac3");
00215 
00216     init_get_bits(&gbc, track->vosData+4, (track->vosLen-4) * 8);
00217     fscod      = get_bits(&gbc, 2);
00218     frmsizecod = get_bits(&gbc, 6);
00219     bsid       = get_bits(&gbc, 5);
00220     bsmod      = get_bits(&gbc, 3);
00221     acmod      = get_bits(&gbc, 3);
00222     if (acmod == 2) {
00223         skip_bits(&gbc, 2); // dsurmod
00224     } else {
00225         if ((acmod & 1) && acmod != 1)
00226             skip_bits(&gbc, 2); // cmixlev
00227         if (acmod & 4)
00228             skip_bits(&gbc, 2); // surmixlev
00229     }
00230     lfeon = get_bits1(&gbc);
00231 
00232     init_put_bits(&pbc, buf, sizeof(buf));
00233     put_bits(&pbc, 2, fscod);
00234     put_bits(&pbc, 5, bsid);
00235     put_bits(&pbc, 3, bsmod);
00236     put_bits(&pbc, 3, acmod);
00237     put_bits(&pbc, 1, lfeon);
00238     put_bits(&pbc, 5, frmsizecod>>1); // bit_rate_code
00239     put_bits(&pbc, 5, 0); // reserved
00240 
00241     flush_put_bits(&pbc);
00242     avio_write(pb, buf, sizeof(buf));
00243 
00244     return 11;
00245 }
00246 
00251 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
00252 {
00253     avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00254     return track->enc->extradata_size;
00255 }
00256 
00257 static int mov_write_enda_tag(AVIOContext *pb)
00258 {
00259     avio_wb32(pb, 10);
00260     ffio_wfourcc(pb, "enda");
00261     avio_wb16(pb, 1); /* little endian */
00262     return 10;
00263 }
00264 
00265 static void putDescr(AVIOContext *pb, int tag, unsigned int size)
00266 {
00267     int i = 3;
00268     avio_w8(pb, tag);
00269     for(; i>0; i--)
00270         avio_w8(pb, (size>>(7*i)) | 0x80);
00271     avio_w8(pb, size & 0x7F);
00272 }
00273 
00274 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
00275 {
00276     int64_t pos = avio_tell(pb);
00277     int decoderSpecificInfoLen = track->vosLen ? 5+track->vosLen : 0;
00278 
00279     avio_wb32(pb, 0); // size
00280     ffio_wfourcc(pb, "esds");
00281     avio_wb32(pb, 0); // Version
00282 
00283     // ES descriptor
00284     putDescr(pb, 0x03, 3 + 5+13 + decoderSpecificInfoLen + 5+1);
00285     avio_wb16(pb, track->trackID);
00286     avio_w8(pb, 0x00); // flags (= no flags)
00287 
00288     // DecoderConfig descriptor
00289     putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
00290 
00291     // Object type indication
00292     if ((track->enc->codec_id == CODEC_ID_MP2 ||
00293          track->enc->codec_id == CODEC_ID_MP3) &&
00294         track->enc->sample_rate > 24000)
00295         avio_w8(pb, 0x6B); // 11172-3
00296     else
00297         avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
00298 
00299     // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
00300     // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
00301     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00302         avio_w8(pb, 0x15); // flags (= Audiostream)
00303     else
00304         avio_w8(pb, 0x11); // flags (= Visualstream)
00305 
00306     avio_w8(pb,  track->enc->rc_buffer_size>>(3+16));      // Buffersize DB (24 bits)
00307     avio_wb16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB
00308 
00309     avio_wb32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
00310     if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)
00311         avio_wb32(pb, 0); // vbr
00312     else
00313         avio_wb32(pb, track->enc->rc_max_rate); // avg bitrate
00314 
00315     if (track->vosLen) {
00316         // DecoderSpecific info descriptor
00317         putDescr(pb, 0x05, track->vosLen);
00318         avio_write(pb, track->vosData, track->vosLen);
00319     }
00320 
00321     // SL descriptor
00322     putDescr(pb, 0x06, 1);
00323     avio_w8(pb, 0x02);
00324     return updateSize(pb, pos);
00325 }
00326 
00327 static int mov_pcm_le_gt16(enum CodecID codec_id)
00328 {
00329     return codec_id == CODEC_ID_PCM_S24LE ||
00330            codec_id == CODEC_ID_PCM_S32LE ||
00331            codec_id == CODEC_ID_PCM_F32LE ||
00332            codec_id == CODEC_ID_PCM_F64LE;
00333 }
00334 
00335 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
00336 {
00337     int64_t pos = avio_tell(pb);
00338     avio_wb32(pb, 0);
00339     avio_wl32(pb, track->tag); // store it byteswapped
00340     track->enc->codec_tag = av_bswap16(track->tag >> 16);
00341     ff_put_wav_header(pb, track->enc);
00342     return updateSize(pb, pos);
00343 }
00344 
00345 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
00346 {
00347     uint32_t layout_tag, bitmap;
00348     int64_t pos = avio_tell(pb);
00349 
00350     layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
00351                                                track->enc->channel_layout,
00352                                                &bitmap);
00353     if (!layout_tag) {
00354         av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
00355                "lack of channel information\n");
00356         return 0;
00357     }
00358 
00359     avio_wb32(pb, 0);           // Size
00360     ffio_wfourcc(pb, "chan");   // Type
00361     avio_w8(pb, 0);             // Version
00362     avio_wb24(pb, 0);           // Flags
00363     avio_wb32(pb, layout_tag);  // mChannelLayoutTag
00364     avio_wb32(pb, bitmap);      // mChannelBitmap
00365     avio_wb32(pb, 0);           // mNumberChannelDescriptions
00366 
00367     return updateSize(pb, pos);
00368 }
00369 
00370 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
00371 {
00372     int64_t pos = avio_tell(pb);
00373 
00374     avio_wb32(pb, 0);     /* size */
00375     ffio_wfourcc(pb, "wave");
00376 
00377     avio_wb32(pb, 12);    /* size */
00378     ffio_wfourcc(pb, "frma");
00379     avio_wl32(pb, track->tag);
00380 
00381     if (track->enc->codec_id == CODEC_ID_AAC) {
00382         /* useless atom needed by mplayer, ipod, not needed by quicktime */
00383         avio_wb32(pb, 12); /* size */
00384         ffio_wfourcc(pb, "mp4a");
00385         avio_wb32(pb, 0);
00386         mov_write_esds_tag(pb, track);
00387     } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
00388         mov_write_enda_tag(pb);
00389     } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {
00390         mov_write_amr_tag(pb, track);
00391     } else if (track->enc->codec_id == CODEC_ID_AC3) {
00392         mov_write_chan_tag(pb, track);
00393         mov_write_ac3_tag(pb, track);
00394     } else if (track->enc->codec_id == CODEC_ID_ALAC) {
00395         mov_write_extradata_tag(pb, track);
00396     } else if (track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00397                track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00398         mov_write_ms_tag(pb, track);
00399     }
00400 
00401     avio_wb32(pb, 8);     /* size */
00402     avio_wb32(pb, 0);     /* null tag */
00403 
00404     return updateSize(pb, pos);
00405 }
00406 
00407 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
00408 {
00409     avio_wb32(pb, track->vosLen+8);
00410     ffio_wfourcc(pb, "glbl");
00411     avio_write(pb, track->vosData, track->vosLen);
00412     return 8+track->vosLen;
00413 }
00414 
00419 static int mov_get_lpcm_flags(enum CodecID codec_id)
00420 {
00421     switch (codec_id) {
00422     case CODEC_ID_PCM_F32BE:
00423     case CODEC_ID_PCM_F64BE:
00424         return 11;
00425     case CODEC_ID_PCM_F32LE:
00426     case CODEC_ID_PCM_F64LE:
00427         return 9;
00428     case CODEC_ID_PCM_U8:
00429         return 10;
00430     case CODEC_ID_PCM_S16BE:
00431     case CODEC_ID_PCM_S24BE:
00432     case CODEC_ID_PCM_S32BE:
00433         return 14;
00434     case CODEC_ID_PCM_S8:
00435     case CODEC_ID_PCM_S16LE:
00436     case CODEC_ID_PCM_S24LE:
00437     case CODEC_ID_PCM_S32LE:
00438         return 12;
00439     default:
00440         return 0;
00441     }
00442 }
00443 
00444 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
00445 {
00446     int64_t pos = avio_tell(pb);
00447     int version = 0;
00448     uint32_t tag = track->tag;
00449 
00450     if (track->mode == MODE_MOV) {
00451         if (mov_get_lpcm_flags(track->enc->codec_id))
00452             tag = AV_RL32("lpcm");
00453         version = 2;
00454     }
00455 
00456     avio_wb32(pb, 0); /* size */
00457     avio_wl32(pb, tag); // store it byteswapped
00458     avio_wb32(pb, 0); /* Reserved */
00459     avio_wb16(pb, 0); /* Reserved */
00460     avio_wb16(pb, 1); /* Data-reference index, XXX  == 1 */
00461 
00462     /* SoundDescription */
00463     avio_wb16(pb, version); /* Version */
00464     avio_wb16(pb, 0); /* Revision level */
00465     avio_wb32(pb, 0); /* Reserved */
00466 
00467     if (version == 2) {
00468         avio_wb16(pb, 3);
00469         avio_wb16(pb, 16);
00470         avio_wb16(pb, 0xfffe);
00471         avio_wb16(pb, 0);
00472         avio_wb32(pb, 0x00010000);
00473         avio_wb32(pb, 72);
00474         avio_wb64(pb, av_double2int(track->timescale));
00475         avio_wb32(pb, track->enc->channels);
00476         avio_wb32(pb, 0x7F000000);
00477         avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
00478         avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
00479         avio_wb32(pb, track->sampleSize);
00480         avio_wb32(pb, track->audio_vbr ? track->enc->frame_size : 1);
00481     } else {
00482         /* reserved for mp4/3gp */
00483         avio_wb16(pb, 2);
00484         avio_wb16(pb, 16);
00485         avio_wb16(pb, 0);
00486 
00487         avio_wb16(pb, 0); /* packet size (= 0) */
00488         avio_wb16(pb, track->timescale); /* Time scale */
00489         avio_wb16(pb, 0); /* Reserved */
00490     }
00491 
00492     if(track->mode == MODE_MOV &&
00493        (track->enc->codec_id == CODEC_ID_AAC ||
00494         track->enc->codec_id == CODEC_ID_AC3 ||
00495         track->enc->codec_id == CODEC_ID_AMR_NB ||
00496         track->enc->codec_id == CODEC_ID_ALAC ||
00497         track->enc->codec_id == CODEC_ID_ADPCM_MS ||
00498         track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV ||
00499         mov_pcm_le_gt16(track->enc->codec_id)))
00500         mov_write_wave_tag(pb, track);
00501     else if(track->tag == MKTAG('m','p','4','a'))
00502         mov_write_esds_tag(pb, track);
00503     else if(track->enc->codec_id == CODEC_ID_AMR_NB)
00504         mov_write_amr_tag(pb, track);
00505     else if(track->enc->codec_id == CODEC_ID_AC3)
00506         mov_write_ac3_tag(pb, track);
00507     else if(track->enc->codec_id == CODEC_ID_ALAC)
00508         mov_write_extradata_tag(pb, track);
00509     else if(track->vosLen > 0)
00510         mov_write_glbl_tag(pb, track);
00511 
00512     return updateSize(pb, pos);
00513 }
00514 
00515 static int mov_write_d263_tag(AVIOContext *pb)
00516 {
00517     avio_wb32(pb, 0xf); /* size */
00518     ffio_wfourcc(pb, "d263");
00519     ffio_wfourcc(pb, "FFMP");
00520     avio_w8(pb, 0); /* decoder version */
00521     /* FIXME use AVCodecContext level/profile, when encoder will set values */
00522     avio_w8(pb, 0xa); /* level */
00523     avio_w8(pb, 0); /* profile */
00524     return 0xf;
00525 }
00526 
00527 /* TODO: No idea about these values */
00528 static int mov_write_svq3_tag(AVIOContext *pb)
00529 {
00530     avio_wb32(pb, 0x15);
00531     ffio_wfourcc(pb, "SMI ");
00532     ffio_wfourcc(pb, "SEQH");
00533     avio_wb32(pb, 0x5);
00534     avio_wb32(pb, 0xe2c0211d);
00535     avio_wb32(pb, 0xc0000000);
00536     avio_w8(pb, 0);
00537     return 0x15;
00538 }
00539 
00540 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
00541 {
00542     int64_t pos = avio_tell(pb);
00543 
00544     avio_wb32(pb, 0);
00545     ffio_wfourcc(pb, "avcC");
00546     ff_isom_write_avcc(pb, track->vosData, track->vosLen);
00547     return updateSize(pb, pos);
00548 }
00549 
00550 /* also used by all avid codecs (dv, imx, meridien) and their variants */
00551 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
00552 {
00553     int i;
00554     avio_wb32(pb, 24); /* size */
00555     ffio_wfourcc(pb, "ACLR");
00556     ffio_wfourcc(pb, "ACLR");
00557     ffio_wfourcc(pb, "0001");
00558     avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
00559     avio_wb32(pb, 0); /* unknown */
00560 
00561     avio_wb32(pb, 24); /* size */
00562     ffio_wfourcc(pb, "APRG");
00563     ffio_wfourcc(pb, "APRG");
00564     ffio_wfourcc(pb, "0001");
00565     avio_wb32(pb, 1); /* unknown */
00566     avio_wb32(pb, 0); /* unknown */
00567 
00568     avio_wb32(pb, 120); /* size */
00569     ffio_wfourcc(pb, "ARES");
00570     ffio_wfourcc(pb, "ARES");
00571     ffio_wfourcc(pb, "0001");
00572     avio_wb32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */
00573     avio_wb32(pb, track->enc->width);
00574     /* values below are based on samples created with quicktime and avid codecs */
00575     if (track->vosData[5] & 2) { // interlaced
00576         avio_wb32(pb, track->enc->height/2);
00577         avio_wb32(pb, 2); /* unknown */
00578         avio_wb32(pb, 0); /* unknown */
00579         avio_wb32(pb, 4); /* unknown */
00580     } else {
00581         avio_wb32(pb, track->enc->height);
00582         avio_wb32(pb, 1); /* unknown */
00583         avio_wb32(pb, 0); /* unknown */
00584         if (track->enc->height == 1080)
00585             avio_wb32(pb, 5); /* unknown */
00586         else
00587             avio_wb32(pb, 6); /* unknown */
00588     }
00589     /* padding */
00590     for (i = 0; i < 10; i++)
00591         avio_wb64(pb, 0);
00592 
00593     /* extra padding for stsd needed */
00594     avio_wb32(pb, 0);
00595     return 0;
00596 }
00597 
00598 static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00599 {
00600     int tag = track->enc->codec_tag;
00601 
00602     if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
00603         return 0;
00604 
00605     if      (track->enc->codec_id == CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
00606     else if (track->enc->codec_id == CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
00607     else if (track->enc->codec_id == CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
00608     else if (track->enc->codec_id == CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');
00609     else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
00610     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
00611 
00612     return tag;
00613 }
00614 
00615 static const AVCodecTag codec_ipod_tags[] = {
00616     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00617     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00618     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00619     { CODEC_ID_ALAC,   MKTAG('a','l','a','c') },
00620     { CODEC_ID_AC3,    MKTAG('a','c','-','3') },
00621     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00622     { CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
00623     { CODEC_ID_NONE, 0 },
00624 };
00625 
00626 static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00627 {
00628     int tag = track->enc->codec_tag;
00629 
00630     // keep original tag for subs, ipod supports both formats
00631     if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
00632         (tag == MKTAG('t','x','3','g') ||
00633          tag == MKTAG('t','e','x','t'))))
00634         tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
00635 
00636     if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
00637         av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
00638                "Quicktime/Ipod might not play the file\n");
00639 
00640     return tag;
00641 }
00642 
00643 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
00644 {
00645     int tag;
00646 
00647     if (track->enc->width == 720) /* SD */
00648         if (track->enc->height == 480) /* NTSC */
00649             if  (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
00650             else                                         tag = MKTAG('d','v','c',' ');
00651         else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
00652         else if (track->enc->pix_fmt == PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
00653         else                                             tag = MKTAG('d','v','p','p');
00654     else if (track->enc->height == 720) /* HD 720 line */
00655         if  (track->enc->time_base.den == 50)            tag = MKTAG('d','v','h','q');
00656         else                                             tag = MKTAG('d','v','h','p');
00657     else if (track->enc->height == 1080) /* HD 1080 line */
00658         if  (track->enc->time_base.den == 25)            tag = MKTAG('d','v','h','5');
00659         else                                             tag = MKTAG('d','v','h','6');
00660     else {
00661         av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
00662         return 0;
00663     }
00664 
00665     return tag;
00666 }
00667 
00668 static const struct {
00669     enum PixelFormat pix_fmt;
00670     uint32_t tag;
00671     unsigned bps;
00672 } mov_pix_fmt_tags[] = {
00673     { PIX_FMT_YUYV422, MKTAG('y','u','v','s'),  0 },
00674     { PIX_FMT_UYVY422, MKTAG('2','v','u','y'),  0 },
00675     { PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
00676     { PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
00677     { PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
00678     { PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
00679     { PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
00680     { PIX_FMT_RGB24,   MKTAG('r','a','w',' '), 24 },
00681     { PIX_FMT_BGR24,   MKTAG('2','4','B','G'), 24 },
00682     { PIX_FMT_ARGB,    MKTAG('r','a','w',' '), 32 },
00683     { PIX_FMT_BGRA,    MKTAG('B','G','R','A'), 32 },
00684     { PIX_FMT_RGBA,    MKTAG('R','G','B','A'), 32 },
00685     { PIX_FMT_ABGR,    MKTAG('A','B','G','R'), 32 },
00686     { PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
00687 };
00688 
00689 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
00690 {
00691     int tag = track->enc->codec_tag;
00692     int i;
00693 
00694     for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
00695         if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
00696             tag = mov_pix_fmt_tags[i].tag;
00697             track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
00698             break;
00699         }
00700     }
00701 
00702     return tag;
00703 }
00704 
00705 static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
00706 {
00707     int tag = track->enc->codec_tag;
00708 
00709     if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
00710                  (track->enc->codec_id == CODEC_ID_DVVIDEO ||
00711                   track->enc->codec_id == CODEC_ID_RAWVIDEO ||
00712                   track->enc->codec_id == CODEC_ID_H263 ||
00713                   av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
00714         if (track->enc->codec_id == CODEC_ID_DVVIDEO)
00715             tag = mov_get_dv_codec_tag(s, track);
00716         else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)
00717             tag = mov_get_rawvideo_codec_tag(s, track);
00718         else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
00719             tag = ff_codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
00720             if (!tag) { // if no mac fcc found, try with Microsoft tags
00721                 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
00722                 if (tag)
00723                     av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
00724                            "the file may be unplayable!\n");
00725             }
00726         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
00727             tag = ff_codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
00728             if (!tag) { // if no mac fcc found, try with Microsoft tags
00729                 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
00730                 if (ms_tag) {
00731                     tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
00732                     av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
00733                            "the file may be unplayable!\n");
00734                 }
00735             }
00736         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00737             tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
00738     }
00739 
00740     return tag;
00741 }
00742 
00743 static const AVCodecTag codec_3gp_tags[] = {
00744     { CODEC_ID_H263,   MKTAG('s','2','6','3') },
00745     { CODEC_ID_H264,   MKTAG('a','v','c','1') },
00746     { CODEC_ID_MPEG4,  MKTAG('m','p','4','v') },
00747     { CODEC_ID_AAC,    MKTAG('m','p','4','a') },
00748     { CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
00749     { CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
00750     { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
00751     { CODEC_ID_NONE, 0 },
00752 };
00753 
00754 static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
00755 {
00756     int tag = track->enc->codec_tag;
00757 
00758     if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
00759         tag = mp4_get_codec_tag(s, track);
00760     else if (track->mode == MODE_IPOD)
00761         tag = ipod_get_codec_tag(s, track);
00762     else if (track->mode & MODE_3GP)
00763         tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
00764     else
00765         tag = mov_get_codec_tag(s, track);
00766 
00767     return tag;
00768 }
00769 
00774 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
00775 {
00776     avio_wb32(pb, 28);
00777     ffio_wfourcc(pb, "uuid");
00778     avio_wb32(pb, 0x6b6840f2);
00779     avio_wb32(pb, 0x5f244fc5);
00780     avio_wb32(pb, 0xba39a51b);
00781     avio_wb32(pb, 0xcf0323f3);
00782     avio_wb32(pb, 0x0);
00783     return 28;
00784 }
00785 
00786 static const uint16_t fiel_data[] = {
00787     0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
00788 };
00789 
00790 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
00791 {
00792     unsigned mov_field_order = 0;
00793     if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
00794         mov_field_order = fiel_data[track->enc->field_order];
00795     else
00796         return 0;
00797     avio_wb32(pb, 10);
00798     ffio_wfourcc(pb, "fiel");
00799     avio_wb16(pb, mov_field_order);
00800     return 10;
00801 }
00802 
00803 static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
00804 {
00805     int64_t pos = avio_tell(pb);
00806     avio_wb32(pb, 0);    /* size */
00807     avio_wl32(pb, track->tag); // store it byteswapped
00808     avio_wb32(pb, 0);    /* Reserved */
00809     avio_wb16(pb, 0);    /* Reserved */
00810     avio_wb16(pb, 1);    /* Data-reference index */
00811 
00812     if (track->enc->extradata_size)
00813         avio_write(pb, track->enc->extradata, track->enc->extradata_size);
00814 
00815     return updateSize(pb, pos);
00816 }
00817 
00818 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
00819 {
00820     AVRational sar;
00821     av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
00822               track->enc->sample_aspect_ratio.den, INT_MAX);
00823 
00824     avio_wb32(pb, 16);
00825     ffio_wfourcc(pb, "pasp");
00826     avio_wb32(pb, sar.num);
00827     avio_wb32(pb, sar.den);
00828     return 16;
00829 }
00830 
00831 static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
00832 {
00833     int64_t pos = avio_tell(pb);
00834     char compressor_name[32];
00835 
00836     avio_wb32(pb, 0); /* size */
00837     avio_wl32(pb, track->tag); // store it byteswapped
00838     avio_wb32(pb, 0); /* Reserved */
00839     avio_wb16(pb, 0); /* Reserved */
00840     avio_wb16(pb, 1); /* Data-reference index */
00841 
00842     avio_wb16(pb, 0); /* Codec stream version */
00843     avio_wb16(pb, 0); /* Codec stream revision (=0) */
00844     if (track->mode == MODE_MOV) {
00845         ffio_wfourcc(pb, "FFMP"); /* Vendor */
00846         if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
00847             avio_wb32(pb, 0); /* Temporal Quality */
00848             avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
00849         } else {
00850             avio_wb32(pb, 0x200); /* Temporal Quality = normal */
00851             avio_wb32(pb, 0x200); /* Spatial Quality = normal */
00852         }
00853     } else {
00854         avio_wb32(pb, 0); /* Reserved */
00855         avio_wb32(pb, 0); /* Reserved */
00856         avio_wb32(pb, 0); /* Reserved */
00857     }
00858     avio_wb16(pb, track->enc->width); /* Video width */
00859     avio_wb16(pb, track->height); /* Video height */
00860     avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
00861     avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
00862     avio_wb32(pb, 0); /* Data size (= 0) */
00863     avio_wb16(pb, 1); /* Frame count (= 1) */
00864 
00865     memset(compressor_name,0,32);
00866     /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
00867     if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
00868         av_strlcpy(compressor_name,track->enc->codec->name,32);
00869     avio_w8(pb, strlen(compressor_name));
00870     avio_write(pb, compressor_name, 31);
00871 
00872     if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
00873         avio_wb16(pb, track->enc->bits_per_coded_sample);
00874     else
00875         avio_wb16(pb, 0x18); /* Reserved */
00876     avio_wb16(pb, 0xffff); /* Reserved */
00877     if(track->tag == MKTAG('m','p','4','v'))
00878         mov_write_esds_tag(pb, track);
00879     else if(track->enc->codec_id == CODEC_ID_H263)
00880         mov_write_d263_tag(pb);
00881     else if(track->enc->codec_id == CODEC_ID_SVQ3)
00882         mov_write_svq3_tag(pb);
00883     else if(track->enc->codec_id == CODEC_ID_DNXHD)
00884         mov_write_avid_tag(pb, track);
00885     else if(track->enc->codec_id == CODEC_ID_H264) {
00886         mov_write_avcc_tag(pb, track);
00887         if(track->mode == MODE_IPOD)
00888             mov_write_uuid_tag_ipod(pb);
00889     } else if (track->enc->field_order != AV_FIELD_UNKNOWN)
00890         mov_write_fiel_tag(pb, track);
00891     else if(track->vosLen > 0)
00892         mov_write_glbl_tag(pb, track);
00893 
00894     if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
00895         track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
00896         mov_write_pasp_tag(pb, track);
00897     }
00898 
00899     return updateSize(pb, pos);
00900 }
00901 
00902 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
00903 {
00904     int64_t pos = avio_tell(pb);
00905     avio_wb32(pb, 0); /* size */
00906     ffio_wfourcc(pb, "rtp ");
00907     avio_wb32(pb, 0); /* Reserved */
00908     avio_wb16(pb, 0); /* Reserved */
00909     avio_wb16(pb, 1); /* Data-reference index */
00910 
00911     avio_wb16(pb, 1); /* Hint track version */
00912     avio_wb16(pb, 1); /* Highest compatible version */
00913     avio_wb32(pb, track->max_packet_size); /* Max packet size */
00914 
00915     avio_wb32(pb, 12); /* size */
00916     ffio_wfourcc(pb, "tims");
00917     avio_wb32(pb, track->timescale);
00918 
00919     return updateSize(pb, pos);
00920 }
00921 
00922 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
00923 {
00924     int64_t pos = avio_tell(pb);
00925     avio_wb32(pb, 0); /* size */
00926     ffio_wfourcc(pb, "stsd");
00927     avio_wb32(pb, 0); /* version & flags */
00928     avio_wb32(pb, 1); /* entry count */
00929     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
00930         mov_write_video_tag(pb, track);
00931     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
00932         mov_write_audio_tag(pb, track);
00933     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
00934         mov_write_subtitle_tag(pb, track);
00935     else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
00936         mov_write_rtp_tag(pb, track);
00937     return updateSize(pb, pos);
00938 }
00939 
00940 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
00941 {
00942     MOVStts *ctts_entries;
00943     uint32_t entries = 0;
00944     uint32_t atom_size;
00945     int i;
00946 
00947     ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
00948     ctts_entries[0].count = 1;
00949     ctts_entries[0].duration = track->cluster[0].cts;
00950     for (i=1; i<track->entry; i++) {
00951         if (track->cluster[i].cts == ctts_entries[entries].duration) {
00952             ctts_entries[entries].count++; /* compress */
00953         } else {
00954             entries++;
00955             ctts_entries[entries].duration = track->cluster[i].cts;
00956             ctts_entries[entries].count = 1;
00957         }
00958     }
00959     entries++; /* last one */
00960     atom_size = 16 + (entries * 8);
00961     avio_wb32(pb, atom_size); /* size */
00962     ffio_wfourcc(pb, "ctts");
00963     avio_wb32(pb, 0); /* version & flags */
00964     avio_wb32(pb, entries); /* entry count */
00965     for (i=0; i<entries; i++) {
00966         avio_wb32(pb, ctts_entries[i].count);
00967         avio_wb32(pb, ctts_entries[i].duration);
00968     }
00969     av_free(ctts_entries);
00970     return atom_size;
00971 }
00972 
00973 /* Time to sample atom */
00974 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
00975 {
00976     MOVStts *stts_entries;
00977     uint32_t entries = -1;
00978     uint32_t atom_size;
00979     int i;
00980 
00981     if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
00982         stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
00983         stts_entries[0].count = track->sampleCount;
00984         stts_entries[0].duration = 1;
00985         entries = 1;
00986     } else {
00987         stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */
00988         for (i=0; i<track->entry; i++) {
00989             int64_t duration = i + 1 == track->entry ?
00990                 track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
00991                 track->cluster[i+1].dts - track->cluster[i].dts;
00992             if (i && duration == stts_entries[entries].duration) {
00993                 stts_entries[entries].count++; /* compress */
00994             } else {
00995                 entries++;
00996                 stts_entries[entries].duration = duration;
00997                 stts_entries[entries].count = 1;
00998             }
00999         }
01000         entries++; /* last one */
01001     }
01002     atom_size = 16 + (entries * 8);
01003     avio_wb32(pb, atom_size); /* size */
01004     ffio_wfourcc(pb, "stts");
01005     avio_wb32(pb, 0); /* version & flags */
01006     avio_wb32(pb, entries); /* entry count */
01007     for (i=0; i<entries; i++) {
01008         avio_wb32(pb, stts_entries[i].count);
01009         avio_wb32(pb, stts_entries[i].duration);
01010     }
01011     av_free(stts_entries);
01012     return atom_size;
01013 }
01014 
01015 static int mov_write_dref_tag(AVIOContext *pb)
01016 {
01017     avio_wb32(pb, 28); /* size */
01018     ffio_wfourcc(pb, "dref");
01019     avio_wb32(pb, 0); /* version & flags */
01020     avio_wb32(pb, 1); /* entry count */
01021 
01022     avio_wb32(pb, 0xc); /* size */
01023     ffio_wfourcc(pb, "url ");
01024     avio_wb32(pb, 1); /* version & flags */
01025 
01026     return 28;
01027 }
01028 
01029 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
01030 {
01031     int64_t pos = avio_tell(pb);
01032     avio_wb32(pb, 0); /* size */
01033     ffio_wfourcc(pb, "stbl");
01034     mov_write_stsd_tag(pb, track);
01035     mov_write_stts_tag(pb, track);
01036     if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01037          track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
01038         track->hasKeyframes && track->hasKeyframes < track->entry)
01039         mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
01040     if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
01041         mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
01042     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
01043         track->flags & MOV_TRACK_CTTS)
01044         mov_write_ctts_tag(pb, track);
01045     mov_write_stsc_tag(pb, track);
01046     mov_write_stsz_tag(pb, track);
01047     mov_write_stco_tag(pb, track);
01048     return updateSize(pb, pos);
01049 }
01050 
01051 static int mov_write_dinf_tag(AVIOContext *pb)
01052 {
01053     int64_t pos = avio_tell(pb);
01054     avio_wb32(pb, 0); /* size */
01055     ffio_wfourcc(pb, "dinf");
01056     mov_write_dref_tag(pb);
01057     return updateSize(pb, pos);
01058 }
01059 
01060 static int mov_write_nmhd_tag(AVIOContext *pb)
01061 {
01062     avio_wb32(pb, 12);
01063     ffio_wfourcc(pb, "nmhd");
01064     avio_wb32(pb, 0);
01065     return 12;
01066 }
01067 
01068 static int mov_write_gmhd_tag(AVIOContext *pb)
01069 {
01070     avio_wb32(pb, 0x20);   /* size */
01071     ffio_wfourcc(pb, "gmhd");
01072     avio_wb32(pb, 0x18);   /* gmin size */
01073     ffio_wfourcc(pb, "gmin");/* generic media info */
01074     avio_wb32(pb, 0);      /* version & flags */
01075     avio_wb16(pb, 0x40);   /* graphics mode = */
01076     avio_wb16(pb, 0x8000); /* opColor (r?) */
01077     avio_wb16(pb, 0x8000); /* opColor (g?) */
01078     avio_wb16(pb, 0x8000); /* opColor (b?) */
01079     avio_wb16(pb, 0);      /* balance */
01080     avio_wb16(pb, 0);      /* reserved */
01081     return 0x20;
01082 }
01083 
01084 static int mov_write_smhd_tag(AVIOContext *pb)
01085 {
01086     avio_wb32(pb, 16); /* size */
01087     ffio_wfourcc(pb, "smhd");
01088     avio_wb32(pb, 0); /* version & flags */
01089     avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
01090     avio_wb16(pb, 0); /* reserved */
01091     return 16;
01092 }
01093 
01094 static int mov_write_vmhd_tag(AVIOContext *pb)
01095 {
01096     avio_wb32(pb, 0x14); /* size (always 0x14) */
01097     ffio_wfourcc(pb, "vmhd");
01098     avio_wb32(pb, 0x01); /* version & flags */
01099     avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
01100     return 0x14;
01101 }
01102 
01103 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
01104 {
01105     const char *hdlr, *descr = NULL, *hdlr_type = NULL;
01106     int64_t pos = avio_tell(pb);
01107 
01108     if (!track) { /* no media --> data handler */
01109         hdlr = "dhlr";
01110         hdlr_type = "url ";
01111         descr = "DataHandler";
01112     } else {
01113         hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
01114         if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01115             hdlr_type = "vide";
01116             descr = "VideoHandler";
01117         } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
01118             hdlr_type = "soun";
01119             descr = "SoundHandler";
01120         } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01121             if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
01122             else                                      hdlr_type = "text";
01123             descr = "SubtitleHandler";
01124         } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
01125             hdlr_type = "hint";
01126             descr = "HintHandler";
01127         }
01128     }
01129 
01130     avio_wb32(pb, 0); /* size */
01131     ffio_wfourcc(pb, "hdlr");
01132     avio_wb32(pb, 0); /* Version & flags */
01133     avio_write(pb, hdlr, 4); /* handler */
01134     ffio_wfourcc(pb, hdlr_type); /* handler type */
01135     avio_wb32(pb ,0); /* reserved */
01136     avio_wb32(pb ,0); /* reserved */
01137     avio_wb32(pb ,0); /* reserved */
01138     if (!track || track->mode == MODE_MOV)
01139         avio_w8(pb, strlen(descr)); /* pascal string */
01140     avio_write(pb, descr, strlen(descr)); /* handler description */
01141     if (track && track->mode != MODE_MOV)
01142         avio_w8(pb, 0); /* c string */
01143     return updateSize(pb, pos);
01144 }
01145 
01146 static int mov_write_hmhd_tag(AVIOContext *pb)
01147 {
01148     /* This atom must be present, but leaving the values at zero
01149      * seems harmless. */
01150     avio_wb32(pb, 28); /* size */
01151     ffio_wfourcc(pb, "hmhd");
01152     avio_wb32(pb, 0); /* version, flags */
01153     avio_wb16(pb, 0); /* maxPDUsize */
01154     avio_wb16(pb, 0); /* avgPDUsize */
01155     avio_wb32(pb, 0); /* maxbitrate */
01156     avio_wb32(pb, 0); /* avgbitrate */
01157     avio_wb32(pb, 0); /* reserved */
01158     return 28;
01159 }
01160 
01161 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
01162 {
01163     int64_t pos = avio_tell(pb);
01164     avio_wb32(pb, 0); /* size */
01165     ffio_wfourcc(pb, "minf");
01166     if(track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
01167         mov_write_vmhd_tag(pb);
01168     else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01169         mov_write_smhd_tag(pb);
01170     else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
01171         if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
01172         else                                      mov_write_nmhd_tag(pb);
01173     } else if (track->tag == MKTAG('r','t','p',' ')) {
01174         mov_write_hmhd_tag(pb);
01175     }
01176     if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
01177         mov_write_hdlr_tag(pb, NULL);
01178     mov_write_dinf_tag(pb);
01179     mov_write_stbl_tag(pb, track);
01180     return updateSize(pb, pos);
01181 }
01182 
01183 static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
01184 {
01185     int version = track->trackDuration < INT32_MAX ? 0 : 1;
01186 
01187     (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
01188     ffio_wfourcc(pb, "mdhd");
01189     avio_w8(pb, version);
01190     avio_wb24(pb, 0); /* flags */
01191     if (version == 1) {
01192         avio_wb64(pb, track->time);
01193         avio_wb64(pb, track->time);
01194     } else {
01195         avio_wb32(pb, track->time); /* creation time */
01196         avio_wb32(pb, track->time); /* modification time */
01197     }
01198     avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
01199     (version == 1) ? avio_wb64(pb, track->trackDuration) : avio_wb32(pb, track->trackDuration); /* duration */
01200     avio_wb16(pb, track->language); /* language */
01201     avio_wb16(pb, 0); /* reserved (quality) */
01202 
01203     if(version!=0 && track->mode == MODE_MOV){
01204         av_log(NULL, AV_LOG_ERROR,
01205             "FATAL error, file duration too long for timebase, this file will not be\n"
01206             "playable with quicktime. Choose a different timebase or a different\n"
01207             "container format\n");
01208     }
01209 
01210     return 32;
01211 }
01212 
01213 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
01214 {
01215     int64_t pos = avio_tell(pb);
01216     avio_wb32(pb, 0); /* size */
01217     ffio_wfourcc(pb, "mdia");
01218     mov_write_mdhd_tag(pb, track);
01219     mov_write_hdlr_tag(pb, track);
01220     mov_write_minf_tag(pb, track);
01221     return updateSize(pb, pos);
01222 }
01223 
01224 static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
01225 {
01226     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01227                                       track->timescale, AV_ROUND_UP);
01228     int version = duration < INT32_MAX ? 0 : 1;
01229 
01230     (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
01231     ffio_wfourcc(pb, "tkhd");
01232     avio_w8(pb, version);
01233     avio_wb24(pb, 0xf); /* flags (track enabled) */
01234     if (version == 1) {
01235         avio_wb64(pb, track->time);
01236         avio_wb64(pb, track->time);
01237     } else {
01238         avio_wb32(pb, track->time); /* creation time */
01239         avio_wb32(pb, track->time); /* modification time */
01240     }
01241     avio_wb32(pb, track->trackID); /* track-id */
01242     avio_wb32(pb, 0); /* reserved */
01243     (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
01244 
01245     avio_wb32(pb, 0); /* reserved */
01246     avio_wb32(pb, 0); /* reserved */
01247     avio_wb16(pb, 0); /* layer */
01248     avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
01249     /* Volume, only for audio */
01250     if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
01251         avio_wb16(pb, 0x0100);
01252     else
01253         avio_wb16(pb, 0);
01254     avio_wb16(pb, 0); /* reserved */
01255 
01256     /* Matrix structure */
01257     avio_wb32(pb, 0x00010000); /* reserved */
01258     avio_wb32(pb, 0x0); /* reserved */
01259     avio_wb32(pb, 0x0); /* reserved */
01260     avio_wb32(pb, 0x0); /* reserved */
01261     avio_wb32(pb, 0x00010000); /* reserved */
01262     avio_wb32(pb, 0x0); /* reserved */
01263     avio_wb32(pb, 0x0); /* reserved */
01264     avio_wb32(pb, 0x0); /* reserved */
01265     avio_wb32(pb, 0x40000000); /* reserved */
01266 
01267     /* Track width and height, for visual only */
01268     if(st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
01269               track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
01270         if(track->mode == MODE_MOV) {
01271             avio_wb32(pb, track->enc->width << 16);
01272             avio_wb32(pb, track->height << 16);
01273         } else {
01274             double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01275             if(!sample_aspect_ratio || track->height != track->enc->height)
01276                 sample_aspect_ratio = 1;
01277             avio_wb32(pb, sample_aspect_ratio * track->enc->width*0x10000);
01278             avio_wb32(pb, track->height*0x10000);
01279         }
01280     }
01281     else {
01282         avio_wb32(pb, 0);
01283         avio_wb32(pb, 0);
01284     }
01285     return 0x5c;
01286 }
01287 
01288 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
01289 {
01290     int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
01291                                track->enc->sample_aspect_ratio.den);
01292 
01293     int64_t pos = avio_tell(pb);
01294 
01295     avio_wb32(pb, 0); /* size */
01296     ffio_wfourcc(pb, "tapt");
01297 
01298     avio_wb32(pb, 20);
01299     ffio_wfourcc(pb, "clef");
01300     avio_wb32(pb, 0);
01301     avio_wb32(pb, width << 16);
01302     avio_wb32(pb, track->enc->height << 16);
01303 
01304     avio_wb32(pb, 20);
01305     ffio_wfourcc(pb, "enof");
01306     avio_wb32(pb, 0);
01307     avio_wb32(pb, track->enc->width << 16);
01308     avio_wb32(pb, track->enc->height << 16);
01309 
01310     return updateSize(pb, pos);
01311 }
01312 
01313 // This box seems important for the psp playback ... without it the movie seems to hang
01314 static int mov_write_edts_tag(AVIOContext *pb, MOVTrack *track)
01315 {
01316     int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
01317                                       track->timescale, AV_ROUND_UP);
01318     int version = duration < INT32_MAX ? 0 : 1;
01319     int entry_size, entry_count, size;
01320     int64_t delay, start_ct = track->cluster[0].cts;
01321     delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
01322                            track->timescale, AV_ROUND_DOWN);
01323     version |= delay < INT32_MAX ? 0 : 1;
01324 
01325     entry_size = (version == 1) ? 20 : 12;
01326     entry_count = 1 + (delay > 0);
01327     size = 24 + entry_count * entry_size;
01328 
01329     /* write the atom data */
01330     avio_wb32(pb, size);
01331     ffio_wfourcc(pb, "edts");
01332     avio_wb32(pb, size - 8);
01333     ffio_wfourcc(pb, "elst");
01334     avio_w8(pb, version);
01335     avio_wb24(pb, 0); /* flags */
01336 
01337     avio_wb32(pb, entry_count);
01338     if (delay > 0) { /* add an empty edit to delay presentation */
01339         if (version == 1) {
01340             avio_wb64(pb, delay);
01341             avio_wb64(pb, -1);
01342         } else {
01343             avio_wb32(pb, delay);
01344             avio_wb32(pb, -1);
01345         }
01346         avio_wb32(pb, 0x00010000);
01347     }
01348 
01349     /* duration */
01350     if (version == 1) {
01351         avio_wb64(pb, duration);
01352         avio_wb64(pb, start_ct);
01353     } else {
01354         avio_wb32(pb, duration);
01355         avio_wb32(pb, start_ct);
01356     }
01357     avio_wb32(pb, 0x00010000);
01358     return size;
01359 }
01360 
01361 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
01362 {
01363     avio_wb32(pb, 20);   // size
01364     ffio_wfourcc(pb, "tref");
01365     avio_wb32(pb, 12);   // size (subatom)
01366     avio_wl32(pb, track->tref_tag);
01367     avio_wb32(pb, track->tref_id);
01368     return 20;
01369 }
01370 
01371 // goes at the end of each track!  ... Critical for PSP playback ("Incompatible data" without it)
01372 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
01373 {
01374     avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
01375     ffio_wfourcc(pb, "uuid");
01376     ffio_wfourcc(pb, "USMT");
01377     avio_wb32(pb, 0x21d24fce);
01378     avio_wb32(pb, 0xbb88695c);
01379     avio_wb32(pb, 0xfac9c740);
01380     avio_wb32(pb, 0x1c);     // another size here!
01381     ffio_wfourcc(pb, "MTDT");
01382     avio_wb32(pb, 0x00010012);
01383     avio_wb32(pb, 0x0a);
01384     avio_wb32(pb, 0x55c40000);
01385     avio_wb32(pb, 0x1);
01386     avio_wb32(pb, 0x0);
01387     return 0x34;
01388 }
01389 
01390 static int mov_write_udta_sdp(AVIOContext *pb, AVFormatContext *ctx, int index)
01391 {
01392     char buf[1000] = "";
01393     int len;
01394 
01395     ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0]->codec, NULL, NULL, 0, 0, ctx);
01396     av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);
01397     len = strlen(buf);
01398 
01399     avio_wb32(pb, len + 24);
01400     ffio_wfourcc(pb, "udta");
01401     avio_wb32(pb, len + 16);
01402     ffio_wfourcc(pb, "hnti");
01403     avio_wb32(pb, len + 8);
01404     ffio_wfourcc(pb, "sdp ");
01405     avio_write(pb, buf, len);
01406     return len + 24;
01407 }
01408 
01409 static int mov_write_trak_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
01410 {
01411     int64_t pos = avio_tell(pb);
01412     avio_wb32(pb, 0); /* size */
01413     ffio_wfourcc(pb, "trak");
01414     mov_write_tkhd_tag(pb, track, st);
01415     if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS || track->cluster[0].dts)
01416         mov_write_edts_tag(pb, track);  // PSP Movies require edts box
01417     if (track->tref_tag)
01418         mov_write_tref_tag(pb, track);
01419     mov_write_mdia_tag(pb, track);
01420     if (track->mode == MODE_PSP)
01421         mov_write_uuid_tag_psp(pb,track);  // PSP Movies require this uuid box
01422     if (track->tag == MKTAG('r','t','p',' '))
01423         mov_write_udta_sdp(pb, track->rtp_ctx, track->trackID);
01424     if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
01425         double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
01426         if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
01427             mov_write_tapt_tag(pb, track);
01428     };
01429     return updateSize(pb, pos);
01430 }
01431 
01432 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
01433 {
01434     int i, has_audio = 0, has_video = 0;
01435     int64_t pos = avio_tell(pb);
01436     int audio_profile = mov->iods_audio_profile;
01437     int video_profile = mov->iods_video_profile;
01438     for (i = 0; i < mov->nb_streams; i++) {
01439         if(mov->tracks[i].entry > 0) {
01440             has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
01441             has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
01442         }
01443     }
01444     if (audio_profile < 0)
01445         audio_profile = 0xFF - has_audio;
01446     if (video_profile < 0)
01447         video_profile = 0xFF - has_video;
01448     avio_wb32(pb, 0x0); /* size */
01449     ffio_wfourcc(pb, "iods");
01450     avio_wb32(pb, 0);    /* version & flags */
01451     putDescr(pb, 0x10, 7);
01452     avio_wb16(pb, 0x004f);
01453     avio_w8(pb, 0xff);
01454     avio_w8(pb, 0xff);
01455     avio_w8(pb, audio_profile);
01456     avio_w8(pb, video_profile);
01457     avio_w8(pb, 0xff);
01458     return updateSize(pb, pos);
01459 }
01460 
01461 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
01462 {
01463     int maxTrackID = 1, i;
01464     int64_t maxTrackLenTemp, maxTrackLen = 0;
01465     int version;
01466 
01467     for (i=0; i<mov->nb_streams; i++) {
01468         if(mov->tracks[i].entry > 0) {
01469             maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,
01470                                              MOV_TIMESCALE,
01471                                              mov->tracks[i].timescale,
01472                                              AV_ROUND_UP);
01473             if(maxTrackLen < maxTrackLenTemp)
01474                 maxTrackLen = maxTrackLenTemp;
01475             if(maxTrackID < mov->tracks[i].trackID)
01476                 maxTrackID = mov->tracks[i].trackID;
01477         }
01478     }
01479 
01480     version = maxTrackLen < UINT32_MAX ? 0 : 1;
01481     (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
01482     ffio_wfourcc(pb, "mvhd");
01483     avio_w8(pb, version);
01484     avio_wb24(pb, 0); /* flags */
01485     if (version == 1) {
01486         avio_wb64(pb, mov->time);
01487         avio_wb64(pb, mov->time);
01488     } else {
01489         avio_wb32(pb, mov->time); /* creation time */
01490         avio_wb32(pb, mov->time); /* modification time */
01491     }
01492     avio_wb32(pb, MOV_TIMESCALE);
01493     (version == 1) ? avio_wb64(pb, maxTrackLen) : avio_wb32(pb, maxTrackLen); /* duration of longest track */
01494 
01495     avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
01496     avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
01497     avio_wb16(pb, 0); /* reserved */
01498     avio_wb32(pb, 0); /* reserved */
01499     avio_wb32(pb, 0); /* reserved */
01500 
01501     /* Matrix structure */
01502     avio_wb32(pb, 0x00010000); /* reserved */
01503     avio_wb32(pb, 0x0); /* reserved */
01504     avio_wb32(pb, 0x0); /* reserved */
01505     avio_wb32(pb, 0x0); /* reserved */
01506     avio_wb32(pb, 0x00010000); /* reserved */
01507     avio_wb32(pb, 0x0); /* reserved */
01508     avio_wb32(pb, 0x0); /* reserved */
01509     avio_wb32(pb, 0x0); /* reserved */
01510     avio_wb32(pb, 0x40000000); /* reserved */
01511 
01512     avio_wb32(pb, 0); /* reserved (preview time) */
01513     avio_wb32(pb, 0); /* reserved (preview duration) */
01514     avio_wb32(pb, 0); /* reserved (poster time) */
01515     avio_wb32(pb, 0); /* reserved (selection time) */
01516     avio_wb32(pb, 0); /* reserved (selection duration) */
01517     avio_wb32(pb, 0); /* reserved (current time) */
01518     avio_wb32(pb, maxTrackID+1); /* Next track id */
01519     return 0x6c;
01520 }
01521 
01522 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
01523                                      AVFormatContext *s)
01524 {
01525     avio_wb32(pb, 33); /* size */
01526     ffio_wfourcc(pb, "hdlr");
01527     avio_wb32(pb, 0);
01528     avio_wb32(pb, 0);
01529     ffio_wfourcc(pb, "mdir");
01530     ffio_wfourcc(pb, "appl");
01531     avio_wb32(pb, 0);
01532     avio_wb32(pb, 0);
01533     avio_w8(pb, 0);
01534     return 33;
01535 }
01536 
01537 /* helper function to write a data tag with the specified string as data */
01538 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
01539 {
01540     if(long_style){
01541         int size = 16 + strlen(data);
01542         avio_wb32(pb, size); /* size */
01543         ffio_wfourcc(pb, "data");
01544         avio_wb32(pb, 1);
01545         avio_wb32(pb, 0);
01546         avio_write(pb, data, strlen(data));
01547         return size;
01548     }else{
01549         if (!lang)
01550             lang = ff_mov_iso639_to_lang("und", 1);
01551         avio_wb16(pb, strlen(data)); /* string length */
01552         avio_wb16(pb, lang);
01553         avio_write(pb, data, strlen(data));
01554         return strlen(data) + 4;
01555     }
01556 }
01557 
01558 static int mov_write_string_tag(AVIOContext *pb, const char *name, const char *value, int lang, int long_style){
01559     int size = 0;
01560     if (value && value[0]) {
01561         int64_t pos = avio_tell(pb);
01562         avio_wb32(pb, 0); /* size */
01563         ffio_wfourcc(pb, name);
01564         mov_write_string_data_tag(pb, value, lang, long_style);
01565         size= updateSize(pb, pos);
01566     }
01567     return size;
01568 }
01569 
01570 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
01571                                      const char *name, const char *tag,
01572                                      int long_style)
01573 {
01574     int l, lang = 0, len, len2;
01575     AVDictionaryEntry *t, *t2 = NULL;
01576     char tag2[16];
01577 
01578     if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
01579         return 0;
01580 
01581     len = strlen(t->key);
01582     snprintf(tag2, sizeof(tag2), "%s-", tag);
01583     while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
01584         len2 = strlen(t2->key);
01585         if (len2 == len+4 && !strcmp(t->value, t2->value)
01586             && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 1)) >= 0) {
01587             lang = l;
01588             break;
01589         }
01590     }
01591     return mov_write_string_tag(pb, name, t->value, lang, long_style);
01592 }
01593 
01594 /* iTunes track number */
01595 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
01596                               AVFormatContext *s)
01597 {
01598     AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
01599     int size = 0, track = t ? atoi(t->value) : 0;
01600     if (track) {
01601         avio_wb32(pb, 32); /* size */
01602         ffio_wfourcc(pb, "trkn");
01603             avio_wb32(pb, 24); /* size */
01604             ffio_wfourcc(pb, "data");
01605             avio_wb32(pb, 0);        // 8 bytes empty
01606             avio_wb32(pb, 0);
01607             avio_wb16(pb, 0);        // empty
01608             avio_wb16(pb, track);    // track number
01609             avio_wb16(pb, 0);        // total track number
01610             avio_wb16(pb, 0);        // empty
01611         size = 32;
01612     }
01613     return size;
01614 }
01615 
01616 /* iTunes meta data list */
01617 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
01618                               AVFormatContext *s)
01619 {
01620     int64_t pos = avio_tell(pb);
01621     avio_wb32(pb, 0); /* size */
01622     ffio_wfourcc(pb, "ilst");
01623     mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);
01624     mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);
01625     mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
01626     mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
01627     mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);
01628     mov_write_string_metadata(s, pb, "\251day", "date"     , 1);
01629     if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
01630         mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
01631     mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);
01632     mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);
01633     mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
01634     mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
01635     mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);
01636     mov_write_string_metadata(s, pb, "desc",    "description",1);
01637     mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);
01638     mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);
01639     mov_write_string_metadata(s, pb, "tven",    "episode_id",1);
01640     mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);
01641     mov_write_trkn_tag(pb, mov, s);
01642     return updateSize(pb, pos);
01643 }
01644 
01645 /* iTunes meta data tag */
01646 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
01647                               AVFormatContext *s)
01648 {
01649     int size = 0;
01650     int64_t pos = avio_tell(pb);
01651     avio_wb32(pb, 0); /* size */
01652     ffio_wfourcc(pb, "meta");
01653     avio_wb32(pb, 0);
01654     mov_write_itunes_hdlr_tag(pb, mov, s);
01655     mov_write_ilst_tag(pb, mov, s);
01656     size = updateSize(pb, pos);
01657     return size;
01658 }
01659 
01660 static int utf8len(const uint8_t *b)
01661 {
01662     int len=0;
01663     int val;
01664     while(*b){
01665         GET_UTF8(val, *b++, return -1;)
01666         len++;
01667     }
01668     return len;
01669 }
01670 
01671 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
01672 {
01673     int val;
01674     while(*b){
01675         GET_UTF8(val, *b++, return -1;)
01676         avio_wb16(pb, val);
01677     }
01678     avio_wb16(pb, 0x00);
01679     return 0;
01680 }
01681 
01682 static uint16_t language_code(const char *str)
01683 {
01684     return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);
01685 }
01686 
01687 static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
01688                                   const char *tag, const char *str)
01689 {
01690     int64_t pos = avio_tell(pb);
01691     AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
01692     if (!t || !utf8len(t->value))
01693         return 0;
01694     avio_wb32(pb, 0);   /* size */
01695     ffio_wfourcc(pb, tag); /* type */
01696     avio_wb32(pb, 0);   /* version + flags */
01697     if (!strcmp(tag, "yrrc"))
01698         avio_wb16(pb, atoi(t->value));
01699     else {
01700         avio_wb16(pb, language_code("eng")); /* language */
01701         avio_write(pb, t->value, strlen(t->value)+1); /* UTF8 string value */
01702         if (!strcmp(tag, "albm") &&
01703             (t = av_dict_get(s->metadata, "track", NULL, 0)))
01704             avio_w8(pb, atoi(t->value));
01705     }
01706     return updateSize(pb, pos);
01707 }
01708 
01709 static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
01710 {
01711     int64_t pos = avio_tell(pb);
01712     int i, nb_chapters = FFMIN(s->nb_chapters, 255);
01713 
01714     avio_wb32(pb, 0);            // size
01715     ffio_wfourcc(pb, "chpl");
01716     avio_wb32(pb, 0x01000000);   // version + flags
01717     avio_wb32(pb, 0);            // unknown
01718     avio_w8(pb, nb_chapters);
01719 
01720     for (i = 0; i < nb_chapters; i++) {
01721         AVChapter *c = s->chapters[i];
01722         AVDictionaryEntry *t;
01723         avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
01724 
01725         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
01726             int len = FFMIN(strlen(t->value), 255);
01727             avio_w8(pb, len);
01728             avio_write(pb, t->value, len);
01729         } else
01730             avio_w8(pb, 0);
01731     }
01732     return updateSize(pb, pos);
01733 }
01734 
01735 static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
01736                               AVFormatContext *s)
01737 {
01738     AVIOContext *pb_buf;
01739     int i, ret, size;
01740     uint8_t *buf;
01741 
01742     for (i = 0; i < s->nb_streams; i++)
01743         if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
01744             return 0;
01745         }
01746 
01747     ret = avio_open_dyn_buf(&pb_buf);
01748     if(ret < 0)
01749         return ret;
01750 
01751         if (mov->mode & MODE_3GP) {
01752             mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
01753             mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
01754             mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
01755             mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
01756             mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
01757             mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
01758             mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
01759             mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
01760         } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
01761             mov_write_string_metadata(s, pb_buf, "\251ART", "artist"     , 0);
01762             mov_write_string_metadata(s, pb_buf, "\251nam", "title"      , 0);
01763             mov_write_string_metadata(s, pb_buf, "\251aut", "author"     , 0);
01764             mov_write_string_metadata(s, pb_buf, "\251alb", "album"      , 0);
01765             mov_write_string_metadata(s, pb_buf, "\251day", "date"       , 0);
01766             mov_write_string_metadata(s, pb_buf, "\251swr", "encoder"    , 0);
01767             mov_write_string_metadata(s, pb_buf, "\251des", "comment"    , 0);
01768             mov_write_string_metadata(s, pb_buf, "\251gen", "genre"      , 0);
01769             mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright"  , 0);
01770         } else {
01771             /* iTunes meta data */
01772             mov_write_meta_tag(pb_buf, mov, s);
01773         }
01774 
01775         if (s->nb_chapters)
01776             mov_write_chpl_tag(pb_buf, s);
01777 
01778     if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
01779         avio_wb32(pb, size+8);
01780         ffio_wfourcc(pb, "udta");
01781         avio_write(pb, buf, size);
01782     }
01783     av_free(buf);
01784 
01785     return 0;
01786 }
01787 
01788 static void mov_write_psp_udta_tag(AVIOContext *pb,
01789                                   const char *str, const char *lang, int type)
01790 {
01791     int len = utf8len(str)+1;
01792     if(len<=0)
01793         return;
01794     avio_wb16(pb, len*2+10);            /* size */
01795     avio_wb32(pb, type);                /* type */
01796     avio_wb16(pb, language_code(lang)); /* language */
01797     avio_wb16(pb, 0x01);                /* ? */
01798     ascii_to_wc(pb, str);
01799 }
01800 
01801 static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
01802 {
01803     AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
01804     int64_t pos, pos2;
01805 
01806     if (title) {
01807         pos = avio_tell(pb);
01808         avio_wb32(pb, 0); /* size placeholder*/
01809         ffio_wfourcc(pb, "uuid");
01810         ffio_wfourcc(pb, "USMT");
01811         avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
01812         avio_wb32(pb, 0xbb88695c);
01813         avio_wb32(pb, 0xfac9c740);
01814 
01815         pos2 = avio_tell(pb);
01816         avio_wb32(pb, 0); /* size placeholder*/
01817         ffio_wfourcc(pb, "MTDT");
01818         avio_wb16(pb, 4);
01819 
01820         // ?
01821         avio_wb16(pb, 0x0C);                 /* size */
01822         avio_wb32(pb, 0x0B);                 /* type */
01823         avio_wb16(pb, language_code("und")); /* language */
01824         avio_wb16(pb, 0x0);                  /* ? */
01825         avio_wb16(pb, 0x021C);               /* data */
01826 
01827         mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);
01828         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);
01829 //        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);
01830         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
01831 
01832         updateSize(pb, pos2);
01833         return updateSize(pb, pos);
01834     }
01835 
01836     return 0;
01837 }
01838 
01839 static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
01840                               AVFormatContext *s)
01841 {
01842     int i;
01843     int64_t pos = avio_tell(pb);
01844     avio_wb32(pb, 0); /* size placeholder*/
01845     ffio_wfourcc(pb, "moov");
01846 
01847     for (i=0; i<mov->nb_streams; i++) {
01848         if(mov->tracks[i].entry <= 0) continue;
01849 
01850         mov->tracks[i].time = mov->time;
01851         mov->tracks[i].trackID = i+1;
01852     }
01853 
01854     if (mov->chapter_track)
01855         for (i=0; i<s->nb_streams; i++) {
01856             mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
01857             mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].trackID;
01858         }
01859     for (i = 0; i < mov->nb_streams; i++) {
01860         if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
01861             mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
01862             mov->tracks[i].tref_id =
01863                 mov->tracks[mov->tracks[i].src_track].trackID;
01864         }
01865     }
01866 
01867     mov_write_mvhd_tag(pb, mov);
01868     if (mov->mode != MODE_MOV && !mov->iods_skip)
01869         mov_write_iods_tag(pb, mov);
01870     for (i=0; i<mov->nb_streams; i++) {
01871         if(mov->tracks[i].entry > 0) {
01872             mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
01873         }
01874     }
01875 
01876     if (mov->mode == MODE_PSP)
01877         mov_write_uuidusmt_tag(pb, s);
01878     else
01879         mov_write_udta_tag(pb, mov, s);
01880 
01881     return updateSize(pb, pos);
01882 }
01883 
01884 static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
01885 {
01886     avio_wb32(pb, 8);    // placeholder for extended size field (64 bit)
01887     ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
01888 
01889     mov->mdat_pos = avio_tell(pb);
01890     avio_wb32(pb, 0); /* size placeholder*/
01891     ffio_wfourcc(pb, "mdat");
01892     return 0;
01893 }
01894 
01895 /* TODO: This needs to be more general */
01896 static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
01897 {
01898     MOVMuxContext *mov = s->priv_data;
01899     int64_t pos = avio_tell(pb);
01900     int has_h264 = 0, has_video = 0;
01901     int minor = 0x200;
01902     int i;
01903 
01904     for (i = 0; i < s->nb_streams; i++) {
01905         AVStream *st = s->streams[i];
01906         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
01907             has_video = 1;
01908         if (st->codec->codec_id == CODEC_ID_H264)
01909             has_h264 = 1;
01910     }
01911 
01912     avio_wb32(pb, 0); /* size */
01913     ffio_wfourcc(pb, "ftyp");
01914 
01915     if (mov->mode == MODE_3GP) {
01916         ffio_wfourcc(pb, has_h264 ? "3gp6"  : "3gp4");
01917         minor =     has_h264 ?   0x100 :   0x200;
01918     } else if (mov->mode & MODE_3G2) {
01919         ffio_wfourcc(pb, has_h264 ? "3g2b"  : "3g2a");
01920         minor =     has_h264 ? 0x20000 : 0x10000;
01921     }else if (mov->mode == MODE_PSP)
01922         ffio_wfourcc(pb, "MSNV");
01923     else if (mov->mode == MODE_MP4)
01924         ffio_wfourcc(pb, "isom");
01925     else if (mov->mode == MODE_IPOD)
01926         ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
01927     else
01928         ffio_wfourcc(pb, "qt  ");
01929 
01930     avio_wb32(pb, minor);
01931 
01932     if(mov->mode == MODE_MOV)
01933         ffio_wfourcc(pb, "qt  ");
01934     else{
01935         ffio_wfourcc(pb, "isom");
01936         ffio_wfourcc(pb, "iso2");
01937         if(has_h264)
01938             ffio_wfourcc(pb, "avc1");
01939     }
01940 
01941     if (mov->mode == MODE_3GP)
01942         ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
01943     else if (mov->mode & MODE_3G2)
01944         ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
01945     else if (mov->mode == MODE_PSP)
01946         ffio_wfourcc(pb, "MSNV");
01947     else if (mov->mode == MODE_MP4)
01948         ffio_wfourcc(pb, "mp41");
01949     return updateSize(pb, pos);
01950 }
01951 
01952 static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
01953 {
01954     AVCodecContext *VideoCodec = s->streams[0]->codec;
01955     AVCodecContext *AudioCodec = s->streams[1]->codec;
01956     int AudioRate = AudioCodec->sample_rate;
01957     int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);
01958     int audio_kbitrate= AudioCodec->bit_rate / 1000;
01959     int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);
01960 
01961     avio_wb32(pb, 0x94); /* size */
01962     ffio_wfourcc(pb, "uuid");
01963     ffio_wfourcc(pb, "PROF");
01964 
01965     avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
01966     avio_wb32(pb, 0xbb88695c);
01967     avio_wb32(pb, 0xfac9c740);
01968 
01969     avio_wb32(pb, 0x0);  /* ? */
01970     avio_wb32(pb, 0x3);  /* 3 sections ? */
01971 
01972     avio_wb32(pb, 0x14); /* size */
01973     ffio_wfourcc(pb, "FPRF");
01974     avio_wb32(pb, 0x0);  /* ? */
01975     avio_wb32(pb, 0x0);  /* ? */
01976     avio_wb32(pb, 0x0);  /* ? */
01977 
01978     avio_wb32(pb, 0x2c);  /* size */
01979     ffio_wfourcc(pb, "APRF");/* audio */
01980     avio_wb32(pb, 0x0);
01981     avio_wb32(pb, 0x2);   /* TrackID */
01982     ffio_wfourcc(pb, "mp4a");
01983     avio_wb32(pb, 0x20f);
01984     avio_wb32(pb, 0x0);
01985     avio_wb32(pb, audio_kbitrate);
01986     avio_wb32(pb, audio_kbitrate);
01987     avio_wb32(pb, AudioRate);
01988     avio_wb32(pb, AudioCodec->channels);
01989 
01990     avio_wb32(pb, 0x34);  /* size */
01991     ffio_wfourcc(pb, "VPRF");   /* video */
01992     avio_wb32(pb, 0x0);
01993     avio_wb32(pb, 0x1);    /* TrackID */
01994     if (VideoCodec->codec_id == CODEC_ID_H264) {
01995         ffio_wfourcc(pb, "avc1");
01996         avio_wb16(pb, 0x014D);
01997         avio_wb16(pb, 0x0015);
01998     } else {
01999         ffio_wfourcc(pb, "mp4v");
02000         avio_wb16(pb, 0x0000);
02001         avio_wb16(pb, 0x0103);
02002     }
02003     avio_wb32(pb, 0x0);
02004     avio_wb32(pb, video_kbitrate);
02005     avio_wb32(pb, video_kbitrate);
02006     avio_wb32(pb, FrameRate);
02007     avio_wb32(pb, FrameRate);
02008     avio_wb16(pb, VideoCodec->width);
02009     avio_wb16(pb, VideoCodec->height);
02010     avio_wb32(pb, 0x010001); /* ? */
02011 }
02012 
02013 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
02014 {
02015     uint32_t c = -1;
02016     int i, closed_gop = 0;
02017 
02018     for (i = 0; i < pkt->size - 4; i++) {
02019         c = (c<<8) + pkt->data[i];
02020         if (c == 0x1b8) { // gop
02021             closed_gop = pkt->data[i+4]>>6 & 0x01;
02022         } else if (c == 0x100) { // pic
02023             int temp_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
02024             if (!temp_ref || closed_gop) // I picture is not reordered
02025                 *flags = MOV_SYNC_SAMPLE;
02026             else
02027                 *flags = MOV_PARTIAL_SYNC_SAMPLE;
02028             break;
02029         }
02030     }
02031     return 0;
02032 }
02033 
02034 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
02035 {
02036     MOVMuxContext *mov = s->priv_data;
02037     AVIOContext *pb = s->pb;
02038     MOVTrack *trk = &mov->tracks[pkt->stream_index];
02039     AVCodecContext *enc = trk->enc;
02040     unsigned int samplesInChunk = 0;
02041     int size= pkt->size;
02042     uint8_t *reformatted_data = NULL;
02043 
02044     if (!s->pb->seekable) return 0; /* Can't handle that */
02045     if (!size) return 0; /* Discard 0 sized packets */
02046 
02047     if (enc->codec_id == CODEC_ID_AMR_NB) {
02048         /* We must find out how many AMR blocks there are in one packet */
02049         static uint16_t packed_size[16] =
02050             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
02051         int len = 0;
02052 
02053         while (len < size && samplesInChunk < 100) {
02054             len += packed_size[(pkt->data[len] >> 3) & 0x0F];
02055             samplesInChunk++;
02056         }
02057         if(samplesInChunk > 1){
02058             av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
02059             return -1;
02060         }
02061     } else if (trk->sampleSize)
02062         samplesInChunk = size/trk->sampleSize;
02063     else
02064         samplesInChunk = 1;
02065 
02066     /* copy extradata if it exists */
02067     if (trk->vosLen == 0 && enc->extradata_size > 0) {
02068         trk->vosLen = enc->extradata_size;
02069         trk->vosData = av_malloc(trk->vosLen);
02070         memcpy(trk->vosData, enc->extradata, trk->vosLen);
02071     }
02072 
02073     if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {
02074         /* from x264 or from bytestream h264 */
02075         /* nal reformating needed */
02076         if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
02077             ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
02078                                        &size);
02079             avio_write(pb, reformatted_data, size);
02080         } else {
02081             size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
02082         }
02083     } else {
02084         avio_write(pb, pkt->data, size);
02085     }
02086 
02087     if ((enc->codec_id == CODEC_ID_DNXHD ||
02088          enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {
02089         /* copy frame to create needed atoms */
02090         trk->vosLen = size;
02091         trk->vosData = av_malloc(size);
02092         if (!trk->vosData)
02093             return AVERROR(ENOMEM);
02094         memcpy(trk->vosData, pkt->data, size);
02095     }
02096 
02097     if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {
02098         trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));
02099         if (!trk->cluster)
02100             return -1;
02101     }
02102 
02103     trk->cluster[trk->entry].pos = avio_tell(pb) - size;
02104     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
02105     trk->cluster[trk->entry].size = size;
02106     trk->cluster[trk->entry].entries = samplesInChunk;
02107     trk->cluster[trk->entry].dts = pkt->dts;
02108     trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;
02109 
02110     if (pkt->pts == AV_NOPTS_VALUE) {
02111         av_log(s, AV_LOG_WARNING, "pts has no value\n");
02112         pkt->pts = pkt->dts;
02113     }
02114     if (pkt->dts != pkt->pts)
02115         trk->flags |= MOV_TRACK_CTTS;
02116     trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
02117     trk->cluster[trk->entry].flags = 0;
02118     if (pkt->flags & AV_PKT_FLAG_KEY) {
02119         if (mov->mode == MODE_MOV && enc->codec_id == CODEC_ID_MPEG2VIDEO &&
02120             trk->entry > 0) { // force sync sample for the first key frame
02121             mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
02122             if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
02123                 trk->flags |= MOV_TRACK_STPS;
02124         } else {
02125             trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
02126         }
02127         if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
02128             trk->hasKeyframes++;
02129     }
02130     trk->entry++;
02131     trk->sampleCount += samplesInChunk;
02132     mov->mdat_size += size;
02133 
02134     avio_flush(pb);
02135 
02136     if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
02137         ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
02138                                  reformatted_data, size);
02139     av_free(reformatted_data);
02140     return 0;
02141 }
02142 
02143 // QuickTime chapters involve an additional text track with the chapter names
02144 // as samples, and a tref pointing from the other tracks to the chapter one.
02145 static void mov_create_chapter_track(AVFormatContext *s, int tracknum)
02146 {
02147     MOVMuxContext *mov = s->priv_data;
02148     MOVTrack *track = &mov->tracks[tracknum];
02149     AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
02150     int i, len;
02151 
02152     track->mode = mov->mode;
02153     track->tag = MKTAG('t','e','x','t');
02154     track->timescale = MOV_TIMESCALE;
02155     track->enc = avcodec_alloc_context3(NULL);
02156     track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
02157 
02158     for (i = 0; i < s->nb_chapters; i++) {
02159         AVChapter *c = s->chapters[i];
02160         AVDictionaryEntry *t;
02161 
02162         int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
02163         pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
02164         pkt.duration = end - pkt.dts;
02165 
02166         if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
02167             len = strlen(t->value);
02168             pkt.size = len+2;
02169             pkt.data = av_malloc(pkt.size);
02170             AV_WB16(pkt.data, len);
02171             memcpy(pkt.data+2, t->value, len);
02172             ff_mov_write_packet(s, &pkt);
02173             av_freep(&pkt.data);
02174         }
02175     }
02176 }
02177 
02178 static int mov_write_header(AVFormatContext *s)
02179 {
02180     AVIOContext *pb = s->pb;
02181     MOVMuxContext *mov = s->priv_data;
02182     AVDictionaryEntry *t;
02183     int i, hint_track = 0;
02184 
02185     if (!s->pb->seekable) {
02186         av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
02187         return -1;
02188     }
02189 
02190     /* Default mode == MP4 */
02191     mov->mode = MODE_MP4;
02192 
02193     if (s->oformat != NULL) {
02194         if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
02195         else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
02196         else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
02197         else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
02198         else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
02199 
02200         mov_write_ftyp_tag(pb,s);
02201         if (mov->mode == MODE_PSP) {
02202             if (s->nb_streams != 2) {
02203                 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
02204                 return -1;
02205             }
02206             mov_write_uuidprof_tag(pb,s);
02207         }
02208     }
02209 
02210     mov->nb_streams = s->nb_streams;
02211     if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)
02212         mov->chapter_track = mov->nb_streams++;
02213 
02214 #if FF_API_FLAG_RTP_HINT
02215     if (s->flags & AVFMT_FLAG_RTP_HINT) {
02216         av_log(s, AV_LOG_WARNING, "The RTP_HINT flag is deprecated, enable it "
02217                                   "via the -movflags rtphint muxer option "
02218                                   "instead.\n");
02219         mov->flags |= FF_MOV_FLAG_RTP_HINT;
02220     }
02221 #endif
02222     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02223         /* Add hint tracks for each audio and video stream */
02224         hint_track = mov->nb_streams;
02225         for (i = 0; i < s->nb_streams; i++) {
02226             AVStream *st = s->streams[i];
02227             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02228                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02229                 mov->nb_streams++;
02230             }
02231         }
02232     }
02233 
02234     mov->tracks = av_mallocz(mov->nb_streams*sizeof(*mov->tracks));
02235     if (!mov->tracks)
02236         return AVERROR(ENOMEM);
02237 
02238     for(i=0; i<s->nb_streams; i++){
02239         AVStream *st= s->streams[i];
02240         MOVTrack *track= &mov->tracks[i];
02241         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
02242 
02243         track->enc = st->codec;
02244         track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
02245         if (track->language < 0)
02246             track->language = 0;
02247         track->mode = mov->mode;
02248         track->tag = mov_find_codec_tag(s, track);
02249         if (!track->tag) {
02250             av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
02251                    "codec not currently supported in container\n", i);
02252             goto error;
02253         }
02254         /* If hinting of this track is enabled by a later hint track,
02255          * this is updated. */
02256         track->hint_track = -1;
02257         if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
02258             if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
02259                 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
02260                 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
02261                 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
02262                     av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
02263                     goto error;
02264                 }
02265                 track->height = track->tag>>24 == 'n' ? 486 : 576;
02266             }
02267             track->timescale = st->codec->time_base.den;
02268             if (track->mode == MODE_MOV && track->timescale > 100000)
02269                 av_log(s, AV_LOG_WARNING,
02270                        "WARNING codec timebase is very high. If duration is too long,\n"
02271                        "file may not be playable by quicktime. Specify a shorter timebase\n"
02272                        "or choose different container.\n");
02273         }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
02274             track->timescale = st->codec->sample_rate;
02275             /* set sampleSize for PCM and ADPCM */
02276             if (av_get_bits_per_sample(st->codec->codec_id)) {
02277                 if (!st->codec->block_align) {
02278                     av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set\n", i);
02279                     goto error;
02280                 }
02281                 track->sampleSize = st->codec->block_align;
02282             }
02283             /* set audio_vbr for compressed audio */
02284             if (av_get_bits_per_sample(st->codec->codec_id) < 8) {
02285                 if (!st->codec->frame_size) {
02286                     av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);
02287                     goto error;
02288                 }
02289                 track->audio_vbr = 1;
02290             }
02291             if (track->mode != MODE_MOV) {
02292                 if (track->timescale > UINT16_MAX) {
02293                     av_log(s, AV_LOG_ERROR, "track %d: output format does not support "
02294                            "sample rate %dhz\n", i, track->timescale);
02295                     goto error;
02296                 }
02297                 if (track->enc->codec_id == CODEC_ID_MP3 && track->timescale < 16000) {
02298                     av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
02299                            i, track->enc->sample_rate);
02300                     goto error;
02301                 }
02302             }
02303         }else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){
02304             track->timescale = st->codec->time_base.den;
02305         }
02306         if (!track->height)
02307             track->height = st->codec->height;
02308 
02309         avpriv_set_pts_info(st, 64, 1, track->timescale);
02310     }
02311 
02312     mov_write_mdat_tag(pb, mov);
02313 
02314 #if FF_API_TIMESTAMP
02315     if (s->timestamp)
02316         mov->time = s->timestamp;
02317     else
02318 #endif
02319     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
02320         mov->time = ff_iso8601_to_unix_time(t->value);
02321     if (mov->time)
02322         mov->time += 0x7C25B080; // 1970 based -> 1904 based
02323 
02324     if (mov->chapter_track)
02325         mov_create_chapter_track(s, mov->chapter_track);
02326 
02327     if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
02328         /* Initialize the hint tracks for each audio and video stream */
02329         for (i = 0; i < s->nb_streams; i++) {
02330             AVStream *st = s->streams[i];
02331             if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
02332                 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
02333                 ff_mov_init_hinting(s, hint_track, i);
02334                 hint_track++;
02335             }
02336         }
02337     }
02338 
02339     avio_flush(pb);
02340 
02341     return 0;
02342  error:
02343     av_freep(&mov->tracks);
02344     return -1;
02345 }
02346 
02347 static int mov_write_trailer(AVFormatContext *s)
02348 {
02349     MOVMuxContext *mov = s->priv_data;
02350     AVIOContext *pb = s->pb;
02351     int res = 0;
02352     int i;
02353 
02354     int64_t moov_pos = avio_tell(pb);
02355 
02356     /* Write size of mdat tag */
02357     if (mov->mdat_size+8 <= UINT32_MAX) {
02358         avio_seek(pb, mov->mdat_pos, SEEK_SET);
02359         avio_wb32(pb, mov->mdat_size+8);
02360     } else {
02361         /* overwrite 'wide' placeholder atom */
02362         avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
02363         avio_wb32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */
02364         ffio_wfourcc(pb, "mdat");
02365         avio_wb64(pb, mov->mdat_size+16);
02366     }
02367     avio_seek(pb, moov_pos, SEEK_SET);
02368 
02369     mov_write_moov_tag(pb, mov, s);
02370 
02371     if (mov->chapter_track)
02372         av_freep(&mov->tracks[mov->chapter_track].enc);
02373 
02374     for (i=0; i<mov->nb_streams; i++) {
02375         if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
02376             ff_mov_close_hinting(&mov->tracks[i]);
02377         av_freep(&mov->tracks[i].cluster);
02378 
02379         if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
02380 
02381     }
02382 
02383     avio_flush(pb);
02384 
02385     av_freep(&mov->tracks);
02386 
02387     return res;
02388 }
02389 
02390 #if CONFIG_MOV_MUXER
02391 MOV_CLASS(mov)
02392 AVOutputFormat ff_mov_muxer = {
02393     .name              = "mov",
02394     .long_name         = NULL_IF_CONFIG_SMALL("MOV format"),
02395     .extensions        = "mov",
02396     .priv_data_size    = sizeof(MOVMuxContext),
02397     .audio_codec       = CODEC_ID_AAC,
02398 #if CONFIG_LIBX264_ENCODER
02399     .video_codec       = CODEC_ID_H264,
02400 #else
02401     .video_codec       = CODEC_ID_MPEG4,
02402 #endif
02403     .write_header      = mov_write_header,
02404     .write_packet      = ff_mov_write_packet,
02405     .write_trailer     = mov_write_trailer,
02406     .flags = AVFMT_GLOBALHEADER,
02407     .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},
02408     .priv_class = &mov_muxer_class,
02409 };
02410 #endif
02411 #if CONFIG_TGP_MUXER
02412 MOV_CLASS(tgp)
02413 AVOutputFormat ff_tgp_muxer = {
02414     .name              = "3gp",
02415     .long_name         = NULL_IF_CONFIG_SMALL("3GP format"),
02416     .extensions        = "3gp",
02417     .priv_data_size    = sizeof(MOVMuxContext),
02418     .audio_codec       = CODEC_ID_AMR_NB,
02419     .video_codec       = CODEC_ID_H263,
02420     .write_header      = mov_write_header,
02421     .write_packet      = ff_mov_write_packet,
02422     .write_trailer     = mov_write_trailer,
02423     .flags = AVFMT_GLOBALHEADER,
02424     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
02425     .priv_class = &tgp_muxer_class,
02426 };
02427 #endif
02428 #if CONFIG_MP4_MUXER
02429 MOV_CLASS(mp4)
02430 AVOutputFormat ff_mp4_muxer = {
02431     .name              = "mp4",
02432     .long_name         = NULL_IF_CONFIG_SMALL("MP4 format"),
02433     .mime_type         = "application/mp4",
02434     .extensions        = "mp4",
02435     .priv_data_size    = sizeof(MOVMuxContext),
02436     .audio_codec       = CODEC_ID_AAC,
02437 #if CONFIG_LIBX264_ENCODER
02438     .video_codec       = CODEC_ID_H264,
02439 #else
02440     .video_codec       = CODEC_ID_MPEG4,
02441 #endif
02442     .write_header      = mov_write_header,
02443     .write_packet      = ff_mov_write_packet,
02444     .write_trailer     = mov_write_trailer,
02445     .flags = AVFMT_GLOBALHEADER,
02446     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
02447     .priv_class = &mp4_muxer_class,
02448 };
02449 #endif
02450 #if CONFIG_PSP_MUXER
02451 MOV_CLASS(psp)
02452 AVOutputFormat ff_psp_muxer = {
02453     .name              = "psp",
02454     .long_name         = NULL_IF_CONFIG_SMALL("PSP MP4 format"),
02455     .extensions        = "mp4,psp",
02456     .priv_data_size    = sizeof(MOVMuxContext),
02457     .audio_codec       = CODEC_ID_AAC,
02458 #if CONFIG_LIBX264_ENCODER
02459     .video_codec       = CODEC_ID_H264,
02460 #else
02461     .video_codec       = CODEC_ID_MPEG4,
02462 #endif
02463     .write_header      = mov_write_header,
02464     .write_packet      = ff_mov_write_packet,
02465     .write_trailer     = mov_write_trailer,
02466     .flags = AVFMT_GLOBALHEADER,
02467     .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
02468     .priv_class = &psp_muxer_class,
02469 };
02470 #endif
02471 #if CONFIG_TG2_MUXER
02472 MOV_CLASS(tg2)
02473 AVOutputFormat ff_tg2_muxer = {
02474     .name              = "3g2",
02475     .long_name         = NULL_IF_CONFIG_SMALL("3GP2 format"),
02476     .extensions        = "3g2",
02477     .priv_data_size    = sizeof(MOVMuxContext),
02478     .audio_codec       = CODEC_ID_AMR_NB,
02479     .video_codec       = CODEC_ID_H263,
02480     .write_header      = mov_write_header,
02481     .write_packet      = ff_mov_write_packet,
02482     .write_trailer     = mov_write_trailer,
02483     .flags = AVFMT_GLOBALHEADER,
02484     .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
02485     .priv_class = &tg2_muxer_class,
02486 };
02487 #endif
02488 #if CONFIG_IPOD_MUXER
02489 MOV_CLASS(ipod)
02490 AVOutputFormat ff_ipod_muxer = {
02491     .name              = "ipod",
02492     .long_name         = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),
02493     .mime_type         = "application/mp4",
02494     .extensions        = "m4v,m4a",
02495     .priv_data_size    = sizeof(MOVMuxContext),
02496     .audio_codec       = CODEC_ID_AAC,
02497     .video_codec       = CODEC_ID_H264,
02498     .write_header      = mov_write_header,
02499     .write_packet      = ff_mov_write_packet,
02500     .write_trailer     = mov_write_trailer,
02501     .flags = AVFMT_GLOBALHEADER,
02502     .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
02503     .priv_class = &ipod_muxer_class,
02504 };
02505 #endif