2 * MOV, 3GP, MP4 encoder.
3 * Copyright (c) 2003 Thomas Raivio.
4 * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #define MOV_INDEX_CLUSTER_SIZE 16384
28 #define globalTimescale 1000
34 typedef struct MOVIentry {
35 unsigned int flags, pos, size;
36 unsigned int samplesInChunk;
41 typedef struct MOVIndex {
67 MOVTrack tracks[MAX_STREAMS];
70 static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track);
72 //FIXME supprt 64bit varaint with wide placeholders
73 static int updateSize (ByteIOContext *pb, int pos)
75 long curpos = url_ftell(pb);
76 url_fseek(pb, pos, SEEK_SET);
77 put_be32(pb, curpos - pos); /* rewrite size */
78 url_fseek(pb, curpos, SEEK_SET);
83 /* Chunk offset atom */
84 static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
87 int pos = url_ftell(pb);
88 put_be32(pb, 0); /* size */
90 put_be32(pb, 0); /* version & flags */
91 put_be32(pb, track->entry); /* entry count */
92 for (i=0; i<track->entry; i++) {
93 int cl = i / MOV_INDEX_CLUSTER_SIZE;
94 int id = i % MOV_INDEX_CLUSTER_SIZE;
95 put_be32(pb, track->cluster[cl][id].pos);
97 return updateSize (pb, pos);
100 /* Sample size atom */
101 static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack* track)
104 int i, j, entries = 0, tst = -1, oldtst = -1;
106 int pos = url_ftell(pb);
107 put_be32(pb, 0); /* size */
109 put_be32(pb, 0); /* version & flags */
111 for (i=0; i<track->entry; i++) {
112 int cl = i / MOV_INDEX_CLUSTER_SIZE;
113 int id = i % MOV_INDEX_CLUSTER_SIZE;
114 tst = track->cluster[cl][id].size/track->cluster[cl][id].entries;
115 if(oldtst != -1 && tst != oldtst) {
119 entries += track->cluster[cl][id].entries;
122 int sSize = track->cluster[0][0].size/track->cluster[0][0].entries;
123 put_be32(pb, sSize); // sample size
124 put_be32(pb, entries); // sample count
127 put_be32(pb, 0); // sample size
128 put_be32(pb, entries); // sample count
129 for (i=0; i<track->entry; i++) {
130 int cl = i / MOV_INDEX_CLUSTER_SIZE;
131 int id = i % MOV_INDEX_CLUSTER_SIZE;
132 for ( j=0; j<track->cluster[cl][id].entries; j++) {
133 put_be32(pb, track->cluster[cl][id].size /
134 track->cluster[cl][id].entries);
138 return updateSize (pb, pos);
141 /* Sample to chunk atom */
142 static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack* track)
144 int index = 0, oldval = -1, i, entryPos, curpos;
146 int pos = url_ftell(pb);
147 put_be32(pb, 0); /* size */
149 put_be32(pb, 0); // version & flags
150 entryPos = url_ftell(pb);
151 put_be32(pb, track->entry); // entry count
152 for (i=0; i<track->entry; i++) {
153 int cl = i / MOV_INDEX_CLUSTER_SIZE;
154 int id = i % MOV_INDEX_CLUSTER_SIZE;
155 if(oldval != track->cluster[cl][id].samplesInChunk)
157 put_be32(pb, i+1); // first chunk
158 put_be32(pb, track->cluster[cl][id].samplesInChunk); // samples per chunk
159 put_be32(pb, 0x1); // sample description index
160 oldval = track->cluster[cl][id].samplesInChunk;
164 curpos = url_ftell(pb);
165 url_fseek(pb, entryPos, SEEK_SET);
166 put_be32(pb, index); // rewrite size
167 url_fseek(pb, curpos, SEEK_SET);
169 return updateSize (pb, pos);
172 /* Sync sample atom */
173 static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack* track)
176 int i, index = 0, entryPos;
177 int pos = url_ftell(pb);
178 put_be32(pb, 0); // size
180 put_be32(pb, 0); // version & flags
181 entryPos = url_ftell(pb);
182 put_be32(pb, track->entry); // entry count
183 for (i=0; i<track->entry; i++) {
184 int cl = i / MOV_INDEX_CLUSTER_SIZE;
185 int id = i % MOV_INDEX_CLUSTER_SIZE;
186 if(track->cluster[cl][id].key_frame == 1) {
191 curpos = url_ftell(pb);
192 url_fseek(pb, entryPos, SEEK_SET);
193 put_be32(pb, index); // rewrite size
194 url_fseek(pb, curpos, SEEK_SET);
195 return updateSize (pb, pos);
198 static int mov_write_damr_tag(ByteIOContext *pb)
200 put_be32(pb, 0x11); /* size */
205 put_be16(pb, 0x80); /* Mode set (all modes for AMR_NB) */
206 put_be16(pb, 0xa); /* Mode change period (no restriction) */
207 //put_be16(pb, 0x81ff); /* Mode set (all modes for AMR_NB) */
208 //put_be16(pb, 1); /* Mode change period (no restriction) */
212 static int mov_write_wave_tag(ByteIOContext *pb, MOVTrack* track)
214 int pos = url_ftell(pb);
216 put_be32(pb, 0); /* size */
219 put_be32(pb, 12); /* size */
223 put_be32(pb, 12); /* size */
227 mov_write_esds_tag(pb, track);
229 put_be32(pb, 12); /* size */
233 put_be32(pb, 8); /* size */
234 put_be32(pb, 0); /* null tag */
236 return updateSize (pb, pos);
239 const CodecTag codec_movaudio_tags[] = {
240 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') },
241 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') },
242 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') },
243 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') },
244 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') },
245 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') },
246 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') },
247 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') },
248 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') },
249 { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') },
253 static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
255 int pos = url_ftell(pb), tag;
257 put_be32(pb, 0); /* size */
259 tag = codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
260 // if no mac fcc found, try with Microsoft tags
263 int tmp = codec_get_tag(codec_wav_tags, track->enc->codec_id);
265 tag = MKTAG('m', 's', ((tmp >> 8) & 0xff), (tmp & 0xff));
270 put_le32(pb, tag); // store it byteswapped
272 put_be32(pb, 0); /* Reserved */
273 put_be16(pb, 0); /* Reserved */
274 put_be16(pb, 1); /* Data-reference index, XXX == 1 */
276 /* SoundDescription */
277 if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
278 put_be16(pb, 1); /* Version 1 */
280 put_be16(pb, 0); /* Version 0 */
281 put_be16(pb, 0); /* Revision level */
282 put_be32(pb, 0); /* Reserved */
284 put_be16(pb, track->enc->channels); /* Number of channels */
285 /* TODO: Currently hard-coded to 16-bit, there doesn't seem
286 to be a good way to get number of bits of audio */
287 put_be16(pb, 0x10); /* Reserved */
288 put_be16(pb, 0); /* compression ID (= 0) */
289 put_be16(pb, 0); /* packet size (= 0) */
290 put_be16(pb, track->timescale); /* Time scale */
291 put_be16(pb, 0); /* Reserved */
293 if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
295 /* SoundDescription V1 extended info */
296 put_be32(pb, track->enc->frame_size); /* Samples per packet */
297 put_be32(pb, 1536); /* Bytes per packet */
298 put_be32(pb, 2); /* Bytes per frame */
299 put_be32(pb, 2); /* Bytes per sample */
302 if(track->enc->codec_id == CODEC_ID_AAC) {
303 if( track->mode == MODE_MOV ) mov_write_wave_tag(pb, track);
304 else mov_write_esds_tag(pb, track);
306 if(track->enc->codec_id == CODEC_ID_AMR_NB)
307 mov_write_damr_tag(pb);
308 return updateSize (pb, pos);
311 static int mov_write_d263_tag(ByteIOContext *pb)
313 put_be32(pb, 0xf); /* size */
321 /* TODO: No idea about these values */
322 static int mov_write_svq3_tag(ByteIOContext *pb)
328 put_be32(pb, 0xe2c0211d);
329 put_be32(pb, 0xc0000000);
334 static unsigned int descrLength(unsigned int len)
336 if (len < 0x00000080)
338 else if (len < 0x00004000)
340 else if(len < 0x00200000)
346 static void putDescr(ByteIOContext *pb, int tag, int size)
352 vals[3] = (uint8_t)(len & 0x7f);
354 vals[2] = (uint8_t)((len & 0x7f) | 0x80);
356 vals[1] = (uint8_t)((len & 0x7f) | 0x80);
358 vals[0] = (uint8_t)((len & 0x7f) | 0x80);
360 put_byte(pb, tag); // DescriptorTag
362 if (size < 0x00000080)
364 put_byte(pb, vals[3]);
366 else if (size < 0x00004000)
368 put_byte(pb, vals[2]);
369 put_byte(pb, vals[3]);
371 else if (size < 0x00200000)
373 put_byte(pb, vals[1]);
374 put_byte(pb, vals[2]);
375 put_byte(pb, vals[3]);
377 else if (size < 0x10000000)
379 put_byte(pb, vals[0]);
380 put_byte(pb, vals[1]);
381 put_byte(pb, vals[2]);
382 put_byte(pb, vals[3]);
386 static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
388 int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
389 int pos = url_ftell(pb);
391 put_be32(pb, 0); // size
393 put_be32(pb, 0); // Version
396 putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
398 put_be16(pb, 0x0001); // ID (= 1)
399 put_byte(pb, 0x00); // flags (= no flags)
401 // DecoderConfig descriptor
402 putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
404 if(track->enc->codec_id == CODEC_ID_AAC)
405 put_byte(pb, 0x40); // Object type indication
406 else if(track->enc->codec_id == CODEC_ID_MPEG4)
407 put_byte(pb, 0x20); // Object type indication (Visual 14496-2)
409 if(track->enc->codec_type == CODEC_TYPE_AUDIO)
410 put_byte(pb, 0x15); // flags (= Audiostream)
412 put_byte(pb, 0x11); // flags (= Visualstream)
414 put_byte(pb, 0x0); // Buffersize DB (24 bits)
415 put_be16(pb, 0x0dd2); // Buffersize DB
417 // TODO: find real values for these
418 put_be32(pb, 0x0002e918); // maxbitrate
419 put_be32(pb, 0x00017e6b); // avg bitrate
423 // DecoderSpecific info descriptor
424 putDescr(pb, 0x05, track->vosLen);
425 put_buffer(pb, track->vosData, track->vosLen);
429 putDescr(pb, 0x06, 1);
431 return updateSize (pb, pos);
434 const CodecTag codec_movvideo_tags[] = {
435 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') },
436 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
437 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
438 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') },
439 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
443 static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
445 int pos = url_ftell(pb), tag;
447 put_be32(pb, 0); /* size */
449 tag = codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
450 // if no mac fcc found, try with Microsoft tags
452 tag = codec_get_tag(codec_bmp_tags, track->enc->codec_id);
456 put_le32(pb, tag); // store it byteswapped
458 put_be32(pb, 0); /* Reserved */
459 put_be16(pb, 0); /* Reserved */
460 put_be16(pb, 1); /* Data-reference index */
462 put_be32(pb, 0); /* Reserved (= 02000c) */
463 put_be32(pb, 0); /* Reserved ("SVis")*/
464 put_be32(pb, 0); /* Reserved */
465 put_be32(pb, 0); /* Reserved (400)*/
466 put_be16(pb, track->enc->width); /* Video width */
467 put_be16(pb, track->enc->height); /* Video height */
468 put_be32(pb, 0x00480000); /* Reserved */
469 put_be32(pb, 0x00480000); /* Reserved */
470 put_be32(pb, 0); /* Data size (= 0) */
471 put_be16(pb, 1); /* Frame count (= 1) */
473 put_be32(pb, 0); /* Reserved */
474 put_be32(pb, 0); /* Reserved */
475 put_be32(pb, 0); /* Reserved */
476 put_be32(pb, 0); /* Reserved */
477 put_be32(pb, 0); /* Reserved */
478 put_be32(pb, 0); /* Reserved */
479 put_be32(pb, 0); /* Reserved */
480 put_be32(pb, 0); /* Reserved */
482 put_be16(pb, 0x18); /* Reserved */
483 put_be16(pb, 0xffff); /* Reserved */
484 if(track->enc->codec_id == CODEC_ID_MPEG4)
485 mov_write_esds_tag(pb, track);
486 else if(track->enc->codec_id == CODEC_ID_H263)
487 mov_write_d263_tag(pb);
488 else if(track->enc->codec_id == CODEC_ID_SVQ3)
489 mov_write_svq3_tag(pb);
491 return updateSize (pb, pos);
494 static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
496 int pos = url_ftell(pb);
497 put_be32(pb, 0); /* size */
499 put_be32(pb, 0); /* version & flags */
500 put_be32(pb, 1); /* entry count */
501 if (track->enc->codec_type == CODEC_TYPE_VIDEO)
502 mov_write_video_tag(pb, track);
503 else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
504 mov_write_audio_tag(pb, track);
505 return updateSize(pb, pos);
508 /* TODO?: Currently all samples/frames seem to have same duration */
509 /* Time to sample atom */
510 static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
512 put_be32(pb, 0x18); /* size */
514 put_be32(pb, 0); /* version & flags */
515 put_be32(pb, 1); /* entry count */
517 put_be32(pb, track->sampleCount); /* sample count */
518 put_be32(pb, track->sampleDuration); /* sample duration */
522 static int mov_write_dref_tag(ByteIOContext *pb)
524 put_be32(pb, 28); /* size */
526 put_be32(pb, 0); /* version & flags */
527 put_be32(pb, 1); /* entry count */
529 put_be32(pb, 0xc); /* size */
531 put_be32(pb, 1); /* version & flags */
536 static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
538 int pos = url_ftell(pb);
539 put_be32(pb, 0); /* size */
541 mov_write_stsd_tag(pb, track);
542 mov_write_stts_tag(pb, track);
543 if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
545 mov_write_stss_tag(pb, track);
546 mov_write_stsc_tag(pb, track);
547 mov_write_stsz_tag(pb, track);
548 mov_write_stco_tag(pb, track);
549 return updateSize(pb, pos);
552 static int mov_write_dinf_tag(ByteIOContext *pb)
554 int pos = url_ftell(pb);
555 put_be32(pb, 0); /* size */
557 mov_write_dref_tag(pb);
558 return updateSize(pb, pos);
561 static int mov_write_smhd_tag(ByteIOContext *pb)
563 put_be32(pb, 16); /* size */
565 put_be32(pb, 0); /* version & flags */
566 put_be16(pb, 0); /* reserved (balance, normally = 0) */
567 put_be16(pb, 0); /* reserved */
571 static int mov_write_vmhd_tag(ByteIOContext *pb)
573 put_be32(pb, 0x14); /* size (always 0x14) */
575 put_be32(pb, 0x01); /* version & flags */
576 put_be64(pb, 0); /* reserved (graphics mode = copy) */
580 static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
582 char *descr, *hdlr, *hdlr_type;
583 int pos = url_ftell(pb);
585 if (!track) { /* no media --> data handler */
588 descr = "DataHandler";
590 hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
591 if (track->enc->codec_type == CODEC_TYPE_VIDEO) {
593 descr = "VideoHandler";
596 descr = "SoundHandler";
600 put_be32(pb, 0); /* size */
602 put_be32(pb, 0); /* Version & flags */
603 put_buffer(pb, hdlr, 4); /* handler */
604 put_tag(pb, hdlr_type); /* handler type */
605 put_be32(pb ,0); /* reserved */
606 put_be32(pb ,0); /* reserved */
607 put_be32(pb ,0); /* reserved */
608 put_byte(pb, strlen(descr)); /* string counter */
609 put_buffer(pb, descr, strlen(descr)); /* handler description */
610 return updateSize(pb, pos);
613 static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack* track)
615 int pos = url_ftell(pb);
616 put_be32(pb, 0); /* size */
618 if(track->enc->codec_type == CODEC_TYPE_VIDEO)
619 mov_write_vmhd_tag(pb);
621 mov_write_smhd_tag(pb);
622 if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
623 mov_write_hdlr_tag(pb, NULL);
624 mov_write_dinf_tag(pb);
625 mov_write_stbl_tag(pb, track);
626 return updateSize(pb, pos);
629 static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
631 put_be32(pb, 32); /* size */
633 put_be32(pb, 0); /* Version & flags */
634 put_be32(pb, track->time); /* creation time */
635 put_be32(pb, track->time); /* modification time */
636 put_be32(pb, track->timescale); /* time scale (sample rate for audio) */
637 put_be32(pb, track->trackDuration); /* duration */
638 put_be16(pb, 0); /* language, 0 = english */
639 put_be16(pb, 0); /* reserved (quality) */
643 static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
645 int pos = url_ftell(pb);
646 put_be32(pb, 0); /* size */
648 mov_write_mdhd_tag(pb, track);
649 mov_write_hdlr_tag(pb, track);
650 mov_write_minf_tag(pb, track);
651 return updateSize(pb, pos);
654 static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack* track)
656 int64_t maxTrackLenTemp;
657 put_be32(pb, 0x5c); /* size (always 0x5c) */
659 put_be32(pb, 0xf); /* version & flags (track enabled) */
660 put_be32(pb, track->time); /* creation time */
661 put_be32(pb, track->time); /* modification time */
662 put_be32(pb, track->trackID); /* track-id */
663 put_be32(pb, 0); /* reserved */
664 maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)track->trackDuration)/(int64_t)track->timescale;
665 put_be32(pb, (long)maxTrackLenTemp); /* duration */
667 put_be32(pb, 0); /* reserved */
668 put_be32(pb, 0); /* reserved */
669 put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */
670 /* Volume, only for audio */
671 if(track->enc->codec_type == CODEC_TYPE_AUDIO)
672 put_be16(pb, 0x0100);
675 put_be16(pb, 0); /* reserved */
677 /* Matrix structure */
678 put_be32(pb, 0x00010000); /* reserved */
679 put_be32(pb, 0x0); /* reserved */
680 put_be32(pb, 0x0); /* reserved */
681 put_be32(pb, 0x0); /* reserved */
682 put_be32(pb, 0x00010000); /* reserved */
683 put_be32(pb, 0x0); /* reserved */
684 put_be32(pb, 0x0); /* reserved */
685 put_be32(pb, 0x0); /* reserved */
686 put_be32(pb, 0x40000000); /* reserved */
688 /* Track width and height, for visual only */
689 if(track->enc->codec_type == CODEC_TYPE_VIDEO) {
690 double sample_aspect_ratio = av_q2d(track->enc->sample_aspect_ratio);
691 if( !sample_aspect_ratio ) sample_aspect_ratio = 1;
692 put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);
693 put_be32(pb, track->enc->height*0x10000);
702 static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack* track)
704 int pos = url_ftell(pb);
705 put_be32(pb, 0); /* size */
707 mov_write_tkhd_tag(pb, track);
708 mov_write_mdia_tag(pb, track);
709 return updateSize(pb, pos);
712 /* TODO: Not sorted out, but not necessary either */
713 static int mov_write_iods_tag(ByteIOContext *pb, MOVContext *mov)
715 put_be32(pb, 0x15); /* size */
717 put_be32(pb, 0); /* version & flags */
718 put_be16(pb, 0x1007);
720 put_be16(pb, 0x4fff);
721 put_be16(pb, 0xfffe);
722 put_be16(pb, 0x01ff);
726 static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov)
728 int maxTrackID = 1, maxTrackLen = 0, i;
729 int64_t maxTrackLenTemp;
731 put_be32(pb, 0x6c); /* size (always 0x6c) */
733 put_be32(pb, 0); /* version & flags */
734 put_be32(pb, mov->time); /* creation time */
735 put_be32(pb, mov->time); /* modification time */
736 put_be32(pb, mov->timescale); /* timescale */
737 for (i=0; i<MAX_STREAMS; i++) {
738 if(mov->tracks[i].entry > 0) {
739 maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)mov->tracks[i].trackDuration)/(int64_t)mov->tracks[i].timescale;
740 if(maxTrackLen < maxTrackLenTemp)
741 maxTrackLen = maxTrackLenTemp;
742 if(maxTrackID < mov->tracks[i].trackID)
743 maxTrackID = mov->tracks[i].trackID;
746 put_be32(pb, maxTrackLen); /* duration of longest track */
748 put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
749 put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
750 put_be16(pb, 0); /* reserved */
751 put_be32(pb, 0); /* reserved */
752 put_be32(pb, 0); /* reserved */
754 /* Matrix structure */
755 put_be32(pb, 0x00010000); /* reserved */
756 put_be32(pb, 0x0); /* reserved */
757 put_be32(pb, 0x0); /* reserved */
758 put_be32(pb, 0x0); /* reserved */
759 put_be32(pb, 0x00010000); /* reserved */
760 put_be32(pb, 0x0); /* reserved */
761 put_be32(pb, 0x0); /* reserved */
762 put_be32(pb, 0x0); /* reserved */
763 put_be32(pb, 0x40000000); /* reserved */
765 put_be32(pb, 0); /* reserved (preview time) */
766 put_be32(pb, 0); /* reserved (preview duration) */
767 put_be32(pb, 0); /* reserved (poster time) */
768 put_be32(pb, 0); /* reserved (selection time) */
769 put_be32(pb, 0); /* reserved (selection duration) */
770 put_be32(pb, 0); /* reserved (current time) */
771 put_be32(pb, maxTrackID+1); /* Next track id */
775 static int mov_write_udta_tag(ByteIOContext *pb, MOVContext* mov,
778 int pos = url_ftell(pb);
781 put_be32(pb, 0); /* size */
785 for (i=0; i<MAX_STREAMS; i++) {
786 if(mov->tracks[i].entry <= 0) continue;
787 if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
788 mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
789 int pos = url_ftell(pb);
790 put_be32(pb, 0); /* size */
791 put_tag(pb, "\251req");
792 put_be16(pb, sizeof("QuickTime 6.0 or greater") - 1);
794 put_buffer(pb, "QuickTime 6.0 or greater",
795 sizeof("QuickTime 6.0 or greater") - 1);
802 if(!(mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))
804 int pos = url_ftell(pb);
805 put_be32(pb, 0); /* size */
806 put_tag(pb, "\251enc");
807 put_be16(pb, sizeof(LIBAVFORMAT_IDENT) - 1); /* string length */
809 put_buffer(pb, LIBAVFORMAT_IDENT, sizeof(LIBAVFORMAT_IDENT) - 1);
815 int pos = url_ftell(pb);
816 put_be32(pb, 0); /* size */
817 put_tag(pb, "\251nam");
818 put_be16(pb, strlen(s->title)); /* string length */
820 put_buffer(pb, s->title, strlen(s->title));
826 int pos = url_ftell(pb);
827 put_be32(pb, 0); /* size */
828 put_tag(pb, /*"\251aut"*/ "\251day" );
829 put_be16(pb, strlen(s->author)); /* string length */
831 put_buffer(pb, s->author, strlen(s->author));
837 int pos = url_ftell(pb);
838 put_be32(pb, 0); /* size */
839 put_tag(pb, "\251des");
840 put_be16(pb, strlen(s->comment)); /* string length */
842 put_buffer(pb, s->comment, strlen(s->comment));
846 return updateSize(pb, pos);
849 static int mov_write_moov_tag(ByteIOContext *pb, MOVContext *mov,
854 put_be32(pb, 0); /* size placeholder*/
856 mov->timescale = globalTimescale;
858 for (i=0; i<MAX_STREAMS; i++) {
859 if(mov->tracks[i].entry <= 0) continue;
861 if(mov->tracks[i].enc->codec_type == CODEC_TYPE_VIDEO) {
862 mov->tracks[i].timescale = mov->tracks[i].enc->frame_rate;
863 mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_rate_base;
865 else if(mov->tracks[i].enc->codec_type == CODEC_TYPE_AUDIO) {
866 /* If AMR, track timescale = 8000, AMR_WB = 16000 */
867 if(mov->tracks[i].enc->codec_id == CODEC_ID_AMR_NB) {
868 mov->tracks[i].sampleDuration = 160; // Bytes per chunk
869 mov->tracks[i].timescale = 8000;
872 mov->tracks[i].timescale = mov->tracks[i].enc->sample_rate;
873 mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_size;
877 mov->tracks[i].trackDuration =
878 mov->tracks[i].sampleCount * mov->tracks[i].sampleDuration;
879 mov->tracks[i].time = mov->time;
880 mov->tracks[i].trackID = i+1;
883 mov_write_mvhd_tag(pb, mov);
884 //mov_write_iods_tag(pb, mov);
885 for (i=0; i<MAX_STREAMS; i++) {
886 if(mov->tracks[i].entry > 0) {
887 mov_write_trak_tag(pb, &(mov->tracks[i]));
891 mov_write_udta_tag(pb, mov, s);
893 return updateSize(pb, pos);
896 int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* mov)
898 mov->mdat_pos = url_ftell(pb);
899 put_be32(pb, 0); /* size placeholder*/
904 /* TODO: This needs to be more general */
905 int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
907 MOVContext *mov = s->priv_data;
909 put_be32(pb, 0x14 ); /* size */
912 if ( mov->mode == MODE_3GP )
917 put_be32(pb, 0x200 );
919 if ( mov->mode == MODE_3GP )
927 static int mov_write_header(AVFormatContext *s)
929 ByteIOContext *pb = &s->pb;
930 MOVContext *mov = s->priv_data;
933 /* Default mode == MP4 */
934 mov->mode = MODE_MP4;
936 if (s->oformat != NULL) {
937 if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
938 else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
940 if ( mov->mode == MODE_3GP || mov->mode == MODE_MP4 )
941 mov_write_ftyp_tag(pb,s);
944 for (i=0; i<MAX_STREAMS; i++) {
945 mov->tracks[i].mode = mov->mode;
948 put_flush_packet(pb);
953 static int mov_write_packet(AVFormatContext *s, int stream_index,
954 const uint8_t *buf, int size, int64_t pts)
956 MOVContext *mov = s->priv_data;
957 ByteIOContext *pb = &s->pb;
958 AVCodecContext *enc = &s->streams[stream_index]->codec;
959 MOVTrack* trk = &mov->tracks[stream_index];
961 unsigned int samplesInChunk = 0;
963 if (url_is_streamed(&s->pb)) return 0; /* Can't handle that */
964 if (!size) return 0; /* Discard 0 sized packets */
966 if (enc->codec_type == CODEC_TYPE_VIDEO ) {
969 else if (enc->codec_type == CODEC_TYPE_AUDIO ) {
970 if( enc->codec_id == CODEC_ID_AMR_NB) {
971 /* We must find out how many AMR blocks there are in one packet */
972 static uint16_t packed_size[16] =
973 {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
976 while (len < size && samplesInChunk < 100) {
977 len += packed_size[(buf[len] >> 3) & 0x0F];
981 else if(enc->codec_id == CODEC_ID_PCM_ALAW) {
982 samplesInChunk = size/enc->channels;
984 else if(enc->codec_id == CODEC_ID_PCM_S16BE || enc->codec_id == CODEC_ID_PCM_S16LE) {
985 samplesInChunk = size/(2*enc->channels);
992 if ((enc->codec_id == CODEC_ID_MPEG4 || enc->codec_id == CODEC_ID_AAC)
993 && trk->vosLen == 0) {
994 // assert(enc->extradata_size);
996 trk->vosLen = enc->extradata_size;
997 trk->vosData = av_malloc(trk->vosLen);
998 memcpy(trk->vosData, enc->extradata, trk->vosLen);
1001 cl = trk->entry / MOV_INDEX_CLUSTER_SIZE;
1002 id = trk->entry % MOV_INDEX_CLUSTER_SIZE;
1004 if (trk->ents_allocated <= trk->entry) {
1005 trk->cluster = av_realloc(trk->cluster, (cl+1)*sizeof(void*));
1008 trk->cluster[cl] = av_malloc(MOV_INDEX_CLUSTER_SIZE*sizeof(MOVIentry));
1009 if (!trk->cluster[cl])
1011 trk->ents_allocated += MOV_INDEX_CLUSTER_SIZE;
1013 if (mov->mdat_written == 0) {
1014 mov_write_mdat_tag(pb, mov);
1015 mov->mdat_written = 1;
1016 mov->time = s->timestamp;
1019 trk->cluster[cl][id].pos = url_ftell(pb);
1020 trk->cluster[cl][id].samplesInChunk = samplesInChunk;
1021 trk->cluster[cl][id].size = size;
1022 trk->cluster[cl][id].entries = samplesInChunk;
1023 if(enc->codec_type == CODEC_TYPE_VIDEO) {
1024 trk->cluster[cl][id].key_frame = enc->coded_frame->key_frame;
1025 if(enc->coded_frame->pict_type == FF_I_TYPE)
1026 trk->hasKeyframes = 1;
1030 trk->sampleCount += samplesInChunk;
1031 trk->mdat_size += size;
1033 put_buffer(pb, buf, size);
1035 put_flush_packet(pb);
1039 static int mov_write_trailer(AVFormatContext *s)
1041 MOVContext *mov = s->priv_data;
1042 ByteIOContext *pb = &s->pb;
1046 offset_t moov_pos = url_ftell(pb);
1048 /* Write size of mdat tag */
1049 for (i=0, j=0; i<MAX_STREAMS; i++) {
1050 if(mov->tracks[i].ents_allocated > 0) {
1051 j += mov->tracks[i].mdat_size;
1054 url_fseek(pb, mov->mdat_pos, SEEK_SET);
1056 url_fseek(pb, moov_pos, SEEK_SET);
1058 mov_write_moov_tag(pb, mov, s);
1060 for (i=0; i<MAX_STREAMS; i++) {
1061 for (j=0; j<mov->tracks[i].ents_allocated/MOV_INDEX_CLUSTER_SIZE; j++) {
1062 av_free(mov->tracks[i].cluster[j]);
1064 av_free(mov->tracks[i].cluster);
1065 if( mov->tracks[i].vosLen ) av_free( mov->tracks[i].vosData );
1067 mov->tracks[i].cluster = NULL;
1068 mov->tracks[i].ents_allocated = mov->tracks[i].entry = 0;
1071 put_flush_packet(pb);
1076 static AVOutputFormat mov_oformat = {
1089 static AVOutputFormat _3gp_oformat = {
1102 static AVOutputFormat mp4_oformat = {
1115 int movenc_init(void)
1117 av_register_output_format(&mov_oformat);
1118 av_register_output_format(&_3gp_oformat);
1119 av_register_output_format(&mp4_oformat);