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 static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
241 int pos = url_ftell(pb);
242 put_be32(pb, 0); /* size */
244 if(track->enc->codec_id == CODEC_ID_PCM_MULAW)
246 else if(track->enc->codec_id == CODEC_ID_PCM_ALAW)
248 else if(track->enc->codec_id == CODEC_ID_ADPCM_IMA_QT)
250 else if(track->enc->codec_id == CODEC_ID_MACE3)
252 else if(track->enc->codec_id == CODEC_ID_MACE6)
254 else if(track->enc->codec_id == CODEC_ID_AAC)
256 else if(track->enc->codec_id == CODEC_ID_AMR_NB)
258 else if(track->enc->codec_id == CODEC_ID_PCM_S16BE)
260 else if(track->enc->codec_id == CODEC_ID_PCM_S16LE)
265 put_be32(pb, 0); /* Reserved */
266 put_be16(pb, 0); /* Reserved */
267 put_be16(pb, 1); /* Data-reference index, XXX == 1 */
269 /* SoundDescription */
270 if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
271 put_be16(pb, 1); /* Version 1 */
273 put_be16(pb, 0); /* Version 0 */
274 put_be16(pb, 0); /* Revision level */
275 put_be32(pb, 0); /* Reserved */
277 put_be16(pb, track->enc->channels); /* Number of channels */
278 /* TODO: Currently hard-coded to 16-bit, there doesn't seem
279 to be a good way to get number of bits of audio */
280 put_be16(pb, 0x10); /* Reserved */
281 put_be16(pb, 0xfffe); /* compression ID (= 0) */
282 put_be16(pb, 0xac); /* packet size (= 0) */
283 put_be16(pb, track->timescale); /* Time scale */
284 put_be16(pb, 0); /* Reserved */
286 if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
288 /* SoundDescription V1 extended info */
289 put_be32(pb, track->enc->frame_size); /* Samples per packet */
290 put_be32(pb, 1536); /* Bytes per packet */
291 put_be32(pb, 2); /* Bytes per frame */
292 put_be32(pb, 2); /* Bytes per sample */
295 if(track->enc->codec_id == CODEC_ID_AAC) {
296 if( track->mode == MODE_MOV ) mov_write_wave_tag(pb, track);
297 else mov_write_esds_tag(pb, track);
299 if(track->enc->codec_id == CODEC_ID_AMR_NB)
300 mov_write_damr_tag(pb);
301 return updateSize (pb, pos);
304 static int mov_write_d263_tag(ByteIOContext *pb)
306 put_be32(pb, 0xf); /* size */
314 /* TODO: No idea about these values */
315 static int mov_write_svq3_tag(ByteIOContext *pb)
321 put_be32(pb, 0xe2c0211d);
322 put_be32(pb, 0xc0000000);
327 static unsigned int descrLength(unsigned int len)
329 if (len < 0x00000080)
331 else if (len < 0x00004000)
333 else if(len < 0x00200000)
339 static void putDescr(ByteIOContext *pb, int tag, int size)
345 vals[3] = (uint8_t)(len & 0x7f);
347 vals[2] = (uint8_t)((len & 0x7f) | 0x80);
349 vals[1] = (uint8_t)((len & 0x7f) | 0x80);
351 vals[0] = (uint8_t)((len & 0x7f) | 0x80);
353 put_byte(pb, tag); // DescriptorTag
355 if (size < 0x00000080)
357 put_byte(pb, vals[3]);
359 else if (size < 0x00004000)
361 put_byte(pb, vals[2]);
362 put_byte(pb, vals[3]);
364 else if (size < 0x00200000)
366 put_byte(pb, vals[1]);
367 put_byte(pb, vals[2]);
368 put_byte(pb, vals[3]);
370 else if (size < 0x10000000)
372 put_byte(pb, vals[0]);
373 put_byte(pb, vals[1]);
374 put_byte(pb, vals[2]);
375 put_byte(pb, vals[3]);
379 static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
381 int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
382 int pos = url_ftell(pb);
384 put_be32(pb, 0); // size
386 put_be32(pb, 0); // Version
389 putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
391 put_be16(pb, 0x0001); // ID (= 1)
392 put_byte(pb, 0x00); // flags (= no flags)
394 // DecoderConfig descriptor
395 putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
397 if(track->enc->codec_id == CODEC_ID_AAC)
398 put_byte(pb, 0x40); // Object type indication
399 else if(track->enc->codec_id == CODEC_ID_MPEG4)
400 put_byte(pb, 0x20); // Object type indication (Visual 14496-2)
402 if(track->enc->codec_type == CODEC_TYPE_AUDIO)
403 put_byte(pb, 0x15); // flags (= Audiostream)
405 put_byte(pb, 0x11); // flags (= Visualstream)
407 put_byte(pb, 0x0); // Buffersize DB (24 bits)
408 put_be16(pb, 0x0dd2); // Buffersize DB
410 // TODO: find real values for these
411 put_be32(pb, 0x0002e918); // maxbitrate
412 put_be32(pb, 0x00017e6b); // avg bitrate
416 // DecoderSpecific info descriptor
417 putDescr(pb, 0x05, track->vosLen);
418 put_buffer(pb, track->vosData, track->vosLen);
422 putDescr(pb, 0x06, 1);
424 return updateSize (pb, pos);
427 static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
429 int pos = url_ftell(pb);
430 put_be32(pb, 0); /* size */
431 if(track->enc->codec_id == CODEC_ID_SVQ1)
433 else if(track->enc->codec_id == CODEC_ID_SVQ3)
435 else if(track->enc->codec_id == CODEC_ID_MPEG4)
437 else if(track->enc->codec_id == CODEC_ID_H263)
439 else if(track->enc->codec_id == CODEC_ID_DVVIDEO)
442 put_tag(pb, " "); /* Unknown tag */
444 put_be32(pb, 0); /* Reserved */
445 put_be16(pb, 0); /* Reserved */
446 put_be16(pb, 1); /* Data-reference index */
448 put_be32(pb, 0); /* Reserved (= 02000c) */
449 put_be32(pb, 0); /* Reserved ("SVis")*/
450 put_be32(pb, 0); /* Reserved */
451 put_be32(pb, 0); /* Reserved (400)*/
452 put_be16(pb, track->enc->width); /* Video width */
453 put_be16(pb, track->enc->height); /* Video height */
454 put_be32(pb, 0x00480000); /* Reserved */
455 put_be32(pb, 0x00480000); /* Reserved */
456 put_be32(pb, 0); /* Reserved */
457 put_be32(pb, 0); /* Reserved */
458 put_be32(pb, 0); /* Reserved */
459 put_be32(pb, 0); /* Reserved */
460 put_be32(pb, 0); /* Reserved */
461 put_be32(pb, 0); /* Reserved */
463 put_be16(pb, 0); /* Reserved */
464 put_be32(pb, 0); /* Reserved */
465 put_be32(pb, 0); /* Reserved */
466 put_be32(pb, 0); /* Reserved */
467 put_be16(pb, 0x18); /* Reserved */
468 put_be16(pb, 0xffff); /* Reserved */
469 if(track->enc->codec_id == CODEC_ID_MPEG4)
470 mov_write_esds_tag(pb, track);
471 else if(track->enc->codec_id == CODEC_ID_H263)
472 mov_write_d263_tag(pb);
473 else if(track->enc->codec_id == CODEC_ID_SVQ3)
474 mov_write_svq3_tag(pb);
476 return updateSize (pb, pos);
479 static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
481 int pos = url_ftell(pb);
482 put_be32(pb, 0); /* size */
484 put_be32(pb, 0); /* version & flags */
485 put_be32(pb, 1); /* entry count */
486 if (track->enc->codec_type == CODEC_TYPE_VIDEO)
487 mov_write_video_tag(pb, track);
488 else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
489 mov_write_audio_tag(pb, track);
490 return updateSize(pb, pos);
493 /* TODO?: Currently all samples/frames seem to have same duration */
494 /* Time to sample atom */
495 static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
497 put_be32(pb, 0x18); /* size */
499 put_be32(pb, 0); /* version & flags */
500 put_be32(pb, 1); /* entry count */
502 put_be32(pb, track->sampleCount); /* sample count */
503 put_be32(pb, track->sampleDuration); /* sample duration */
507 static int mov_write_dref_tag(ByteIOContext *pb)
509 put_be32(pb, 28); /* size */
511 put_be32(pb, 0); /* version & flags */
512 put_be32(pb, 1); /* entry count */
514 put_be32(pb, 0xc); /* size */
516 put_be32(pb, 1); /* version & flags */
521 static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
523 int pos = url_ftell(pb);
524 put_be32(pb, 0); /* size */
526 mov_write_stsd_tag(pb, track);
527 mov_write_stts_tag(pb, track);
528 if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
530 mov_write_stss_tag(pb, track);
531 mov_write_stsc_tag(pb, track);
532 mov_write_stsz_tag(pb, track);
533 mov_write_stco_tag(pb, track);
534 return updateSize(pb, pos);
537 static int mov_write_dinf_tag(ByteIOContext *pb)
539 int pos = url_ftell(pb);
540 put_be32(pb, 0); /* size */
542 mov_write_dref_tag(pb);
543 return updateSize(pb, pos);
546 static int mov_write_smhd_tag(ByteIOContext *pb)
548 put_be32(pb, 16); /* size */
550 put_be32(pb, 0); /* version & flags */
551 put_be16(pb, 0); /* reserved (balance, normally = 0) */
552 put_be16(pb, 0); /* reserved */
556 static int mov_write_vmhd_tag(ByteIOContext *pb)
558 put_be32(pb, 0x14); /* size (always 0x14) */
560 put_be32(pb, 0x01); /* version & flags */
561 put_be64(pb, 0); /* reserved (graphics mode = copy) */
565 static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack* track)
567 int pos = url_ftell(pb);
568 put_be32(pb, 0); /* size */
570 if(track->enc->codec_type == CODEC_TYPE_VIDEO)
571 mov_write_vmhd_tag(pb);
573 mov_write_smhd_tag(pb);
574 mov_write_dinf_tag(pb);
575 mov_write_stbl_tag(pb, track);
576 return updateSize(pb, pos);
579 static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
582 int pos = url_ftell(pb);
583 put_be32(pb, 0); /* size */
585 put_be32(pb, 0); /* Version & flags */
586 if (track->mode == MODE_MOV)
587 put_tag(pb, "mhlr"); /* handler */
589 put_be32(pb, 0); /* reserved */
590 if(track->enc->codec_type == CODEC_TYPE_VIDEO)
591 put_tag(pb, "vide"); /* handler type */
593 put_tag(pb, "soun"); /* handler type */
594 put_be32(pb ,0); /* reserved */
595 put_be32(pb ,0); /* reserved */
596 put_be32(pb ,0); /* reserved */
597 if(track->enc->codec_type == CODEC_TYPE_VIDEO)
598 str = "VideoHandler";
600 str = "SoundHandler";
601 put_byte(pb, strlen(str)); /* string counter */
602 put_buffer(pb, str, strlen(str));
603 return updateSize(pb, pos);
606 static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
608 put_be32(pb, 32); /* size */
610 put_be32(pb, 0); /* Version & flags */
611 put_be32(pb, track->time); /* creation time */
612 put_be32(pb, track->time); /* modification time */
613 put_be32(pb, track->timescale); /* time scale (sample rate for audio) */
614 put_be32(pb, track->trackDuration); /* duration */
615 put_be16(pb, 0); /* language, 0 = english */
616 put_be16(pb, 0); /* reserved (quality) */
620 static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
622 int pos = url_ftell(pb);
623 put_be32(pb, 0); /* size */
625 mov_write_mdhd_tag(pb, track);
626 mov_write_hdlr_tag(pb, track);
627 mov_write_minf_tag(pb, track);
628 return updateSize(pb, pos);
631 static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack* track)
633 int64_t maxTrackLenTemp;
634 put_be32(pb, 0x5c); /* size (always 0x5c) */
636 put_be32(pb, 0xf); /* version & flags (track enabled) */
637 put_be32(pb, track->time); /* creation time */
638 put_be32(pb, track->time); /* modification time */
639 put_be32(pb, track->trackID); /* track-id */
640 put_be32(pb, 0); /* reserved */
641 maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)track->trackDuration)/(int64_t)track->timescale;
642 put_be32(pb, (long)maxTrackLenTemp); /* duration */
644 put_be32(pb, 0); /* reserved */
645 put_be32(pb, 0); /* reserved */
646 put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */
647 /* Volume, only for audio */
648 if(track->enc->codec_type == CODEC_TYPE_AUDIO)
649 put_be16(pb, 0x0100);
652 put_be16(pb, 0); /* reserved */
654 /* Matrix structure */
655 put_be32(pb, 0x00010000); /* reserved */
656 put_be32(pb, 0x0); /* reserved */
657 put_be32(pb, 0x0); /* reserved */
658 put_be32(pb, 0x0); /* reserved */
659 put_be32(pb, 0x00010000); /* reserved */
660 put_be32(pb, 0x0); /* reserved */
661 put_be32(pb, 0x0); /* reserved */
662 put_be32(pb, 0x0); /* reserved */
663 put_be32(pb, 0x40000000); /* reserved */
665 /* Track width and height, for visual only */
666 if(track->enc->codec_type == CODEC_TYPE_VIDEO) {
667 double sample_aspect_ratio = av_q2d(track->enc->sample_aspect_ratio);
668 if( !sample_aspect_ratio ) sample_aspect_ratio = 1;
669 put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);
670 put_be32(pb, track->enc->height*0x10000);
679 static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack* track)
681 int pos = url_ftell(pb);
682 put_be32(pb, 0); /* size */
684 mov_write_tkhd_tag(pb, track);
685 mov_write_mdia_tag(pb, track);
686 return updateSize(pb, pos);
689 /* TODO: Not sorted out, but not necessary either */
690 static int mov_write_iods_tag(ByteIOContext *pb, MOVContext *mov)
692 put_be32(pb, 0x15); /* size */
694 put_be32(pb, 0); /* version & flags */
695 put_be16(pb, 0x1007);
697 put_be16(pb, 0x4fff);
698 put_be16(pb, 0xfffe);
699 put_be16(pb, 0x01ff);
703 static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov)
705 int maxTrackID = 1, maxTrackLen = 0, i;
706 int64_t maxTrackLenTemp;
708 put_be32(pb, 0x6c); /* size (always 0x6c) */
710 put_be32(pb, 0); /* version & flags */
711 put_be32(pb, mov->time); /* creation time */
712 put_be32(pb, mov->time); /* modification time */
713 put_be32(pb, mov->timescale); /* timescale */
714 for (i=0; i<MAX_STREAMS; i++) {
715 if(mov->tracks[i].entry > 0) {
716 maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)mov->tracks[i].trackDuration)/(int64_t)mov->tracks[i].timescale;
717 if(maxTrackLen < maxTrackLenTemp)
718 maxTrackLen = maxTrackLenTemp;
719 if(maxTrackID < mov->tracks[i].trackID)
720 maxTrackID = mov->tracks[i].trackID;
723 put_be32(pb, maxTrackLen); /* duration of longest track */
725 put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
726 put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
727 put_be16(pb, 0); /* reserved */
728 put_be32(pb, 0); /* reserved */
729 put_be32(pb, 0); /* reserved */
731 /* Matrix structure */
732 put_be32(pb, 0x00010000); /* reserved */
733 put_be32(pb, 0x0); /* reserved */
734 put_be32(pb, 0x0); /* reserved */
735 put_be32(pb, 0x0); /* reserved */
736 put_be32(pb, 0x00010000); /* reserved */
737 put_be32(pb, 0x0); /* reserved */
738 put_be32(pb, 0x0); /* reserved */
739 put_be32(pb, 0x0); /* reserved */
740 put_be32(pb, 0x40000000); /* reserved */
742 put_be32(pb, 0); /* reserved (preview time) */
743 put_be32(pb, 0); /* reserved (preview duration) */
744 put_be32(pb, 0); /* reserved (poster time) */
745 put_be32(pb, 0); /* reserved (selection time) */
746 put_be32(pb, 0); /* reserved (selection duration) */
747 put_be32(pb, 0); /* reserved (current time) */
748 put_be32(pb, maxTrackID+1); /* Next track id */
752 static int mov_write_udta_tag(ByteIOContext *pb, MOVContext* mov,
755 int pos = url_ftell(pb);
758 put_be32(pb, 0); /* size */
762 for (i=0; i<MAX_STREAMS; i++) {
763 if(mov->tracks[i].entry <= 0) continue;
764 if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
765 mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
766 int pos = url_ftell(pb);
767 put_be32(pb, 0); /* size */
768 put_tag(pb, "\251req");
769 put_be16(pb, sizeof("QuickTime 6.0 or greater") - 1);
771 put_buffer(pb, "QuickTime 6.0 or greater",
772 sizeof("QuickTime 6.0 or greater") - 1);
780 int pos = url_ftell(pb);
781 put_be32(pb, 0); /* size */
782 put_tag(pb, "\251enc");
783 put_be16(pb, sizeof(LIBAVFORMAT_IDENT) - 1); /* string length */
785 put_buffer(pb, LIBAVFORMAT_IDENT, sizeof(LIBAVFORMAT_IDENT) - 1);
791 int pos = url_ftell(pb);
792 put_be32(pb, 0); /* size */
793 put_tag(pb, "\251nam");
794 put_be16(pb, strlen(s->title)); /* string length */
796 put_buffer(pb, s->title, strlen(s->title));
802 int pos = url_ftell(pb);
803 put_be32(pb, 0); /* size */
804 put_tag(pb, /*"\251aut"*/ "\251day" );
805 put_be16(pb, strlen(s->author)); /* string length */
807 put_buffer(pb, s->author, strlen(s->author));
813 int pos = url_ftell(pb);
814 put_be32(pb, 0); /* size */
815 put_tag(pb, "\251des");
816 put_be16(pb, strlen(s->comment)); /* string length */
818 put_buffer(pb, s->comment, strlen(s->comment));
822 return updateSize(pb, pos);
825 static int mov_write_moov_tag(ByteIOContext *pb, MOVContext *mov,
830 put_be32(pb, 0); /* size placeholder*/
832 mov->timescale = globalTimescale;
834 for (i=0; i<MAX_STREAMS; i++) {
835 if(mov->tracks[i].entry <= 0) continue;
837 if(mov->tracks[i].enc->codec_type == CODEC_TYPE_VIDEO) {
838 mov->tracks[i].timescale = mov->tracks[i].enc->frame_rate;
839 mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_rate_base;
841 else if(mov->tracks[i].enc->codec_type == CODEC_TYPE_AUDIO) {
842 /* If AMR, track timescale = 8000, AMR_WB = 16000 */
843 if(mov->tracks[i].enc->codec_id == CODEC_ID_AMR_NB) {
844 mov->tracks[i].sampleDuration = 160; // Bytes per chunk
845 mov->tracks[i].timescale = 8000;
848 mov->tracks[i].timescale = mov->tracks[i].enc->sample_rate;
849 mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_size;
853 mov->tracks[i].trackDuration =
854 mov->tracks[i].sampleCount * mov->tracks[i].sampleDuration;
855 mov->tracks[i].time = mov->time;
856 mov->tracks[i].trackID = i+1;
859 mov_write_mvhd_tag(pb, mov);
860 //mov_write_iods_tag(pb, mov);
861 for (i=0; i<MAX_STREAMS; i++) {
862 if(mov->tracks[i].entry > 0) {
863 mov_write_trak_tag(pb, &(mov->tracks[i]));
867 mov_write_udta_tag(pb, mov, s);
869 return updateSize(pb, pos);
872 int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* mov)
874 mov->mdat_pos = url_ftell(pb);
875 put_be32(pb, 0); /* size placeholder*/
880 /* TODO: This needs to be more general */
881 int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
883 MOVContext *mov = s->priv_data;
885 put_be32(pb, 0x14 ); /* size */
888 if ( mov->mode == MODE_3GP )
893 put_be32(pb, 0x200 );
895 if ( mov->mode == MODE_3GP )
903 static int mov_write_header(AVFormatContext *s)
905 ByteIOContext *pb = &s->pb;
906 MOVContext *mov = s->priv_data;
909 /* Default mode == MP4 */
910 mov->mode = MODE_MP4;
912 if (s->oformat != NULL) {
913 if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
914 else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
916 if ( mov->mode == MODE_3GP || mov->mode == MODE_MP4 )
917 mov_write_ftyp_tag(pb,s);
920 for (i=0; i<MAX_STREAMS; i++) {
921 mov->tracks[i].mode = mov->mode;
924 put_flush_packet(pb);
929 static int Timestamp(void) {
930 return 1067949799U+(24107*86400); //its the modification time of this line :)
933 static int mov_write_packet(AVFormatContext *s, int stream_index,
934 const uint8_t *buf, int size, int64_t pts)
936 MOVContext *mov = s->priv_data;
937 ByteIOContext *pb = &s->pb;
938 AVCodecContext *enc = &s->streams[stream_index]->codec;
939 MOVTrack* trk = &mov->tracks[stream_index];
941 unsigned int samplesInChunk = 0;
943 if (url_is_streamed(&s->pb)) return 0; /* Can't handle that */
944 if (!size) return 0; /* Discard 0 sized packets */
946 if (enc->codec_type == CODEC_TYPE_VIDEO ) {
949 else if (enc->codec_type == CODEC_TYPE_AUDIO ) {
950 if( enc->codec_id == CODEC_ID_AMR_NB) {
951 /* We must find out how many AMR blocks there are in one packet */
952 static uint16_t packed_size[16] =
953 {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
956 while (len < size && samplesInChunk < 100) {
957 len += packed_size[(buf[len] >> 3) & 0x0F];
961 else if(enc->codec_id == CODEC_ID_PCM_ALAW) {
962 samplesInChunk = size/enc->channels;
969 if ((enc->codec_id == CODEC_ID_MPEG4 || enc->codec_id == CODEC_ID_AAC)
970 && trk->vosLen == 0) {
971 assert(enc->extradata_size);
973 trk->vosLen = enc->extradata_size;
974 trk->vosData = av_malloc(trk->vosLen);
975 memcpy(trk->vosData, enc->extradata, trk->vosLen);
978 cl = trk->entry / MOV_INDEX_CLUSTER_SIZE;
979 id = trk->entry % MOV_INDEX_CLUSTER_SIZE;
981 if (trk->ents_allocated <= trk->entry) {
982 trk->cluster = av_realloc(trk->cluster, (cl+1)*sizeof(void*));
985 trk->cluster[cl] = av_malloc(MOV_INDEX_CLUSTER_SIZE*sizeof(MOVIentry));
986 if (!trk->cluster[cl])
988 trk->ents_allocated += MOV_INDEX_CLUSTER_SIZE;
990 if (mov->mdat_written == 0) {
991 mov_write_mdat_tag(pb, mov);
992 mov->mdat_written = 1;
993 mov->time = Timestamp();
996 trk->cluster[cl][id].pos = url_ftell(pb);
997 trk->cluster[cl][id].samplesInChunk = samplesInChunk;
998 trk->cluster[cl][id].size = size;
999 trk->cluster[cl][id].entries = samplesInChunk;
1000 if(enc->codec_type == CODEC_TYPE_VIDEO) {
1001 trk->cluster[cl][id].key_frame = enc->coded_frame->key_frame;
1002 if(enc->coded_frame->pict_type == FF_I_TYPE)
1003 trk->hasKeyframes = 1;
1007 trk->sampleCount += samplesInChunk;
1008 trk->mdat_size += size;
1010 put_buffer(pb, buf, size);
1012 put_flush_packet(pb);
1016 static int mov_write_trailer(AVFormatContext *s)
1018 MOVContext *mov = s->priv_data;
1019 ByteIOContext *pb = &s->pb;
1023 offset_t moov_pos = url_ftell(pb);
1025 /* Write size of mdat tag */
1026 for (i=0, j=0; i<MAX_STREAMS; i++) {
1027 if(mov->tracks[i].ents_allocated > 0) {
1028 j += mov->tracks[i].mdat_size;
1031 url_fseek(pb, mov->mdat_pos, SEEK_SET);
1033 url_fseek(pb, moov_pos, SEEK_SET);
1035 mov_write_moov_tag(pb, mov, s);
1037 for (i=0; i<MAX_STREAMS; i++) {
1038 for (j=0; j<mov->tracks[i].ents_allocated/MOV_INDEX_CLUSTER_SIZE; j++) {
1039 av_free(mov->tracks[i].cluster[j]);
1041 av_free(mov->tracks[i].cluster);
1042 if( mov->tracks[i].vosLen ) av_free( mov->tracks[i].vosData );
1044 mov->tracks[i].cluster = NULL;
1045 mov->tracks[i].ents_allocated = mov->tracks[i].entry = 0;
1048 put_flush_packet(pb);
1053 static AVOutputFormat mov_oformat = {
1066 static AVOutputFormat _3gp_oformat = {
1079 static AVOutputFormat mp4_oformat = {
1092 int movenc_init(void)
1094 av_register_output_format(&mov_oformat);
1095 av_register_output_format(&_3gp_oformat);
1096 av_register_output_format(&mp4_oformat);