3 * Copyright (c) 2001 Fabrice Bellard.
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
36 * First version by Francois Revol revol@free.fr
37 * Seek function by Gael Chardon gael.dev@4now.net
39 * Features and limitations:
40 * - reads most of the QT files I have (at least the structure),
41 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
42 * - the code is quite ugly... maybe I won't do it recursive next time :-)
44 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
45 * when coding this :) (it's a writer anyway)
47 * Reference documents:
48 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
50 * http://developer.apple.com/documentation/QuickTime/QTFF/
51 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
52 * QuickTime is a trademark of Apple (AFAIK :))
55 #include "qtpalette.h"
61 /* the QuickTime file format is quite convoluted...
62 * it has lots of index tables, each indexing something in another one...
63 * Here we just use what is needed to read the chunks
75 int64_t size; /* total size (excluding the size and type fields) */
83 struct MOVParseTableEntry;
85 typedef struct MOVStreamContext {
86 int ffindex; /* the ffmpeg stream id */
88 unsigned int chunk_count;
89 int64_t *chunk_offsets;
90 unsigned int stts_count;
91 MOV_stts_t *stts_data;
92 unsigned int ctts_count;
93 MOV_stts_t *ctts_data;
94 unsigned int edit_count; /* number of 'edit' (elst atom) */
95 unsigned int sample_to_chunk_sz;
96 MOV_stsc_t *sample_to_chunk;
97 int sample_to_ctime_index;
98 int sample_to_ctime_sample;
99 unsigned int sample_size;
100 unsigned int sample_count;
102 unsigned int keyframe_count;
107 unsigned int bytes_per_frame;
108 unsigned int samples_per_frame;
109 int dv_audio_container;
110 int pseudo_stream_id;
113 typedef struct MOVContext {
116 int64_t duration; /* duration of the longest track */
117 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
118 int found_mdat; /* we suppose we have enough data to read the file */
119 AVPaletteControl palette_control;
120 MOV_mdat_t *mdat_list;
122 DVDemuxContext *dv_demux;
123 AVFormatContext *dv_fctx;
124 int isom; /* 1 if file is ISO Media (mp4/3gp) */
128 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
130 /* those functions parse an atom */
132 1: found what I wanted, exit
133 0: continue to parse next atom
134 -1: error occured, exit
136 /* links atom IDs to parse functions */
137 typedef struct MOVParseTableEntry {
139 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
140 } MOVParseTableEntry;
142 static const MOVParseTableEntry mov_default_parse_table[];
144 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
146 int64_t total_size = 0;
151 a.offset = atom.offset;
154 atom.size = INT64_MAX;
155 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
159 a.size = get_be32(pb);
160 a.type = get_le32(pb);
164 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
165 a.type, (char*)&a.type, a.size, atom.size, total_size);
166 if (a.size == 1) { /* 64 bit extended size */
167 a.size = get_be64(pb) - 8;
172 a.size = atom.size - total_size;
179 a.size = FFMIN(a.size, atom.size - total_size);
181 for (i = 0; mov_default_parse_table[i].type != 0
182 && mov_default_parse_table[i].type != a.type; i++)
185 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
186 url_fskip(pb, a.size);
188 offset_t start_pos = url_ftell(pb);
190 err = mov_default_parse_table[i].parse(c, pb, a);
191 if (c->found_moov && c->found_mdat)
193 left = a.size - url_ftell(pb) + start_pos;
194 if (left > 0) /* skip garbage at atom end */
199 total_size += a.size;
202 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
203 url_fskip(pb, atom.size - total_size);
209 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
211 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
215 get_byte(pb); /* version */
216 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
219 ctype = get_le32(pb);
220 type = get_le32(pb); /* component subtype */
222 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
223 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
224 dprintf(c->fc, "stype= %c%c%c%c\n",
225 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
228 if(type == MKTAG('v', 'i', 'd', 'e'))
229 st->codec->codec_type = CODEC_TYPE_VIDEO;
230 else if(type == MKTAG('s', 'o', 'u', 'n'))
231 st->codec->codec_type = CODEC_TYPE_AUDIO;
232 else if(type == MKTAG('m', '1', 'a', ' '))
233 st->codec->codec_id = CODEC_ID_MP2;
234 else if(type == MKTAG('s', 'u', 'b', 'p')) {
235 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
237 get_be32(pb); /* component manufacture */
238 get_be32(pb); /* component flags */
239 get_be32(pb); /* component flags mask */
242 return 0; /* nothing left to read */
244 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
248 static int mp4_read_descr_len(ByteIOContext *pb)
253 int c = get_byte(pb);
254 len = (len << 7) | (c & 0x7f);
261 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
265 len = mp4_read_descr_len(pb);
266 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
270 #define MP4ESDescrTag 0x03
271 #define MP4DecConfigDescrTag 0x04
272 #define MP4DecSpecificDescrTag 0x05
274 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
276 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
279 get_be32(pb); /* version + flags */
280 len = mp4_read_descr(c, pb, &tag);
281 if (tag == MP4ESDescrTag) {
282 get_be16(pb); /* ID */
283 get_byte(pb); /* priority */
285 get_be16(pb); /* ID */
287 len = mp4_read_descr(c, pb, &tag);
288 if (tag == MP4DecConfigDescrTag) {
289 int object_type_id = get_byte(pb);
290 get_byte(pb); /* stream type */
291 get_be24(pb); /* buffer size db */
292 get_be32(pb); /* max bitrate */
293 get_be32(pb); /* avg bitrate */
295 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
296 dprintf(c->fc, "esds object type id %d\n", object_type_id);
297 len = mp4_read_descr(c, pb, &tag);
298 if (tag == MP4DecSpecificDescrTag) {
299 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
300 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
301 if (st->codec->extradata) {
302 get_buffer(pb, st->codec->extradata, len);
303 st->codec->extradata_size = len;
305 if ((*st->codec->extradata >> 3) == 29) {
306 st->codec->codec_id = CODEC_ID_MP3ON4;
314 /* this atom contains actual media data */
315 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317 if(atom.size == 0) /* wrong one (MP4) */
319 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
320 c->mdat_list[c->mdat_count].offset = atom.offset;
321 c->mdat_list[c->mdat_count].size = atom.size;
325 return 1; /* found both, just go */
326 url_fskip(pb, atom.size);
327 return 0; /* now go for moov */
330 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
332 uint32_t type = get_le32(pb);
334 if (type != MKTAG('q','t',' ',' '))
336 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
337 get_be32(pb); /* minor version */
338 url_fskip(pb, atom.size - 8);
342 /* this atom should contain all header atoms */
343 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
345 if (mov_read_default(c, pb, atom) < 0)
347 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
348 /* so we don't parse the whole file if over a network */
351 return 1; /* found both, just go */
352 return 0; /* now go for mdat */
356 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
358 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
359 MOVStreamContext *sc = st->priv_data;
360 int version = get_byte(pb);
364 return 1; /* unsupported */
366 get_byte(pb); get_byte(pb);
367 get_byte(pb); /* flags */
373 get_be32(pb); /* creation time */
374 get_be32(pb); /* modification time */
377 sc->time_scale = get_be32(pb);
378 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
380 lang = get_be16(pb); /* language */
381 ff_mov_lang_to_iso639(lang, st->language);
382 get_be16(pb); /* quality */
387 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
389 int version = get_byte(pb); /* version */
390 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
396 get_be32(pb); /* creation time */
397 get_be32(pb); /* modification time */
399 c->time_scale = get_be32(pb); /* time scale */
401 dprintf(c->fc, "time scale = %i\n", c->time_scale);
403 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
404 get_be32(pb); /* preferred scale */
406 get_be16(pb); /* preferred volume */
408 url_fskip(pb, 10); /* reserved */
410 url_fskip(pb, 36); /* display matrix */
412 get_be32(pb); /* preview time */
413 get_be32(pb); /* preview duration */
414 get_be32(pb); /* poster time */
415 get_be32(pb); /* selection time */
416 get_be32(pb); /* selection duration */
417 get_be32(pb); /* current time */
418 get_be32(pb); /* next track ID */
423 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
425 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
427 if((uint64_t)atom.size > (1<<30))
430 // currently SVQ3 decoder expect full STSD header - so let's fake it
431 // this should be fixed and just SMI header should be passed
432 av_free(st->codec->extradata);
433 st->codec->extradata_size = 0x5a + atom.size;
434 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
436 if (st->codec->extradata) {
437 memcpy(st->codec->extradata, "SVQ3", 4); // fake
438 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
439 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
441 url_fskip(pb, atom.size);
446 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
448 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
449 int little_endian = get_be16(pb);
452 switch (st->codec->codec_id) {
453 case CODEC_ID_PCM_S24BE:
454 st->codec->codec_id = CODEC_ID_PCM_S24LE;
456 case CODEC_ID_PCM_S32BE:
457 st->codec->codec_id = CODEC_ID_PCM_S32LE;
466 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
467 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
469 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
470 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
472 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
474 buf= av_realloc(st->codec->extradata, size);
477 st->codec->extradata= buf;
478 buf+= st->codec->extradata_size;
479 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
480 AV_WB32( buf , atom.size + 8);
481 AV_WL32( buf + 4, atom.type);
482 get_buffer(pb, buf + 8, atom.size);
486 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
488 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
490 if((uint64_t)atom.size > (1<<30))
493 if (st->codec->codec_id == CODEC_ID_QDM2) {
494 // pass all frma atom to codec, needed at least for QDM2
495 av_free(st->codec->extradata);
496 st->codec->extradata_size = atom.size;
497 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
499 if (st->codec->extradata) {
500 get_buffer(pb, st->codec->extradata, atom.size);
502 url_fskip(pb, atom.size);
503 } else if (atom.size > 8) { /* to read frma, esds atoms */
504 if (mov_read_default(c, pb, atom) < 0)
507 url_fskip(pb, atom.size);
512 * This function reads atom content and puts data in extradata without tag
513 * nor size unlike mov_read_extradata.
515 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
517 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
519 if((uint64_t)atom.size > (1<<30))
522 av_free(st->codec->extradata);
524 st->codec->extradata_size = atom.size;
525 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
527 if (st->codec->extradata) {
528 get_buffer(pb, st->codec->extradata, atom.size);
530 url_fskip(pb, atom.size);
535 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
537 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
538 MOVStreamContext *sc = st->priv_data;
539 unsigned int i, entries;
541 get_byte(pb); /* version */
542 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
544 entries = get_be32(pb);
546 if(entries >= UINT_MAX/sizeof(int64_t))
549 sc->chunk_count = entries;
550 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
551 if (!sc->chunk_offsets)
553 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
554 for(i=0; i<entries; i++) {
555 sc->chunk_offsets[i] = get_be32(pb);
557 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
558 for(i=0; i<entries; i++) {
559 sc->chunk_offsets[i] = get_be64(pb);
567 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
569 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
570 MOVStreamContext *sc = st->priv_data;
571 int entries, frames_per_sample;
573 uint8_t codec_name[32];
575 /* for palette traversal */
576 unsigned int color_depth;
577 unsigned int color_start;
578 unsigned int color_count;
579 unsigned int color_end;
583 const uint8_t *color_table;
584 int j, pseudo_stream_id;
585 unsigned char r, g, b;
587 get_byte(pb); /* version */
588 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
590 entries = get_be32(pb);
592 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
594 MOV_atom_t a = { 0, 0, 0 };
595 offset_t start_pos = url_ftell(pb);
596 int size = get_be32(pb); /* size */
597 format = get_le32(pb); /* data format */
599 get_be32(pb); /* reserved */
600 get_be16(pb); /* reserved */
601 get_be16(pb); /* index */
603 if (st->codec->codec_tag && st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g')) {
604 /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
605 seperate AVStream but this needs a few changes in the mov demuxer, patch
607 url_fskip(pb, size - (url_ftell(pb) - start_pos));
610 sc->pseudo_stream_id= pseudo_stream_id;
612 st->codec->codec_tag = format;
613 id = codec_get_id(codec_movaudio_tags, format);
614 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
615 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
617 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
618 st->codec->codec_type = CODEC_TYPE_AUDIO;
619 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
620 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
621 id = codec_get_id(codec_movvideo_tags, format);
623 id = codec_get_id(codec_bmp_tags, format);
625 st->codec->codec_type = CODEC_TYPE_VIDEO;
626 else if(st->codec->codec_type == CODEC_TYPE_DATA){
627 id = codec_get_id(ff_codec_movsubtitle_tags, format);
629 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
633 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
634 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
635 (format >> 24) & 0xff, st->codec->codec_type);
637 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
638 st->codec->codec_id = id;
639 get_be16(pb); /* version */
640 get_be16(pb); /* revision level */
641 get_be32(pb); /* vendor */
642 get_be32(pb); /* temporal quality */
643 get_be32(pb); /* spatial quality */
645 st->codec->width = get_be16(pb); /* width */
646 st->codec->height = get_be16(pb); /* height */
648 get_be32(pb); /* horiz resolution */
649 get_be32(pb); /* vert resolution */
650 get_be32(pb); /* data size, always 0 */
651 frames_per_sample = get_be16(pb); /* frames per samples */
653 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
655 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
656 if (codec_name[0] <= 31) {
657 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
658 st->codec->codec_name[codec_name[0]] = 0;
661 st->codec->bits_per_sample = get_be16(pb); /* depth */
662 st->codec->color_table_id = get_be16(pb); /* colortable id */
664 /* figure out the palette situation */
665 color_depth = st->codec->bits_per_sample & 0x1F;
666 color_greyscale = st->codec->bits_per_sample & 0x20;
668 /* if the depth is 2, 4, or 8 bpp, file is palettized */
669 if ((color_depth == 2) || (color_depth == 4) ||
670 (color_depth == 8)) {
671 if (color_greyscale) {
672 /* compute the greyscale palette */
673 color_count = 1 << color_depth;
675 color_dec = 256 / (color_count - 1);
676 for (j = 0; j < color_count; j++) {
677 r = g = b = color_index;
678 c->palette_control.palette[j] =
679 (r << 16) | (g << 8) | (b);
680 color_index -= color_dec;
684 } else if (st->codec->color_table_id & 0x08) {
685 /* if flag bit 3 is set, use the default palette */
686 color_count = 1 << color_depth;
687 if (color_depth == 2)
688 color_table = ff_qt_default_palette_4;
689 else if (color_depth == 4)
690 color_table = ff_qt_default_palette_16;
692 color_table = ff_qt_default_palette_256;
694 for (j = 0; j < color_count; j++) {
695 r = color_table[j * 4 + 0];
696 g = color_table[j * 4 + 1];
697 b = color_table[j * 4 + 2];
698 c->palette_control.palette[j] =
699 (r << 16) | (g << 8) | (b);
702 /* load the palette from the file */
703 color_start = get_be32(pb);
704 color_count = get_be16(pb);
705 color_end = get_be16(pb);
706 if ((color_start <= 255) &&
707 (color_end <= 255)) {
708 for (j = color_start; j <= color_end; j++) {
709 /* each R, G, or B component is 16 bits;
710 * only use the top 8 bits; skip alpha bytes
720 c->palette_control.palette[j] =
721 (r << 16) | (g << 8) | (b);
725 st->codec->palctrl = &c->palette_control;
726 st->codec->palctrl->palette_changed = 1;
728 st->codec->palctrl = NULL;
729 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
731 uint16_t version = get_be16(pb);
733 st->codec->codec_id = id;
734 get_be16(pb); /* revision level */
735 get_be32(pb); /* vendor */
737 st->codec->channels = get_be16(pb); /* channel count */
738 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
739 st->codec->bits_per_sample = get_be16(pb); /* sample size */
740 /* do we need to force to 16 for AMR ? */
742 /* handle specific s8 codec */
743 get_be16(pb); /* compression id = 0*/
744 get_be16(pb); /* packet size = 0 */
746 st->codec->sample_rate = ((get_be32(pb) >> 16));
748 switch (st->codec->codec_id) {
749 case CODEC_ID_PCM_S8:
750 case CODEC_ID_PCM_U8:
751 if (st->codec->bits_per_sample == 16)
752 st->codec->codec_id = CODEC_ID_PCM_S16BE;
754 case CODEC_ID_PCM_S16LE:
755 case CODEC_ID_PCM_S16BE:
756 if (st->codec->bits_per_sample == 8)
757 st->codec->codec_id = CODEC_ID_PCM_S8;
758 else if (st->codec->bits_per_sample == 24)
759 st->codec->codec_id = CODEC_ID_PCM_S24BE;
765 //Read QT version 1 fields. In version 0 these do not exist.
766 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
769 sc->samples_per_frame = get_be32(pb);
770 get_be32(pb); /* bytes per packet */
771 sc->bytes_per_frame = get_be32(pb);
772 get_be32(pb); /* bytes per sample */
773 } else if(version==2) {
774 get_be32(pb); /* sizeof struct only */
775 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
776 st->codec->channels = get_be32(pb);
777 get_be32(pb); /* always 0x7F000000 */
778 get_be32(pb); /* bits per channel if sound is uncompressed */
779 get_be32(pb); /* lcpm format specific flag */
780 get_be32(pb); /* bytes per audio packet if constant */
781 get_be32(pb); /* lpcm frames per audio packet if constant */
785 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
786 if (bits_per_sample) {
787 st->codec->bits_per_sample = bits_per_sample;
788 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
790 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
791 st->codec->codec_id= id;
793 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
794 url_fskip(pb, size - (url_ftell(pb) - start_pos));
796 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
797 a.size = size - (url_ftell(pb) - start_pos);
799 if (mov_read_default(c, pb, a) < 0)
801 } else if (a.size > 0)
802 url_fskip(pb, a.size);
805 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
806 st->codec->sample_rate= sc->time_scale;
809 /* special codec parameters handling */
810 switch (st->codec->codec_id) {
811 #ifdef CONFIG_H261_DECODER
814 #ifdef CONFIG_H263_DECODER
817 #ifdef CONFIG_MPEG4_DECODER
820 st->codec->width= 0; /* let decoder init width/height */
821 st->codec->height= 0;
823 #ifdef CONFIG_LIBFAAD
826 #ifdef CONFIG_VORBIS_DECODER
827 case CODEC_ID_VORBIS:
829 case CODEC_ID_MP3ON4:
830 st->codec->sample_rate= 0; /* let decoder init parameters properly */
832 #ifdef CONFIG_DV_DEMUXER
833 case CODEC_ID_DVAUDIO:
834 c->dv_fctx = av_alloc_format_context();
835 c->dv_demux = dv_init_demux(c->dv_fctx);
837 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
840 sc->dv_audio_container = 1;
841 st->codec->codec_id = CODEC_ID_PCM_S16LE;
844 /* no ifdef since parameters are always those */
845 case CODEC_ID_AMR_WB:
846 st->codec->sample_rate= 16000;
847 st->codec->channels= 1; /* really needed */
849 case CODEC_ID_AMR_NB:
850 st->codec->sample_rate= 8000;
851 st->codec->channels= 1; /* really needed */
855 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
856 st->need_parsing = AVSTREAM_PARSE_FULL;
858 case CODEC_ID_ADPCM_MS:
859 case CODEC_ID_ADPCM_IMA_WAV:
860 st->codec->block_align = sc->bytes_per_frame;
869 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
871 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
872 MOVStreamContext *sc = st->priv_data;
873 unsigned int i, entries;
875 get_byte(pb); /* version */
876 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
878 entries = get_be32(pb);
880 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
883 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
885 sc->sample_to_chunk_sz = entries;
886 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
887 if (!sc->sample_to_chunk)
889 for(i=0; i<entries; i++) {
890 sc->sample_to_chunk[i].first = get_be32(pb);
891 sc->sample_to_chunk[i].count = get_be32(pb);
892 sc->sample_to_chunk[i].id = get_be32(pb);
897 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
899 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
900 MOVStreamContext *sc = st->priv_data;
901 unsigned int i, entries;
903 get_byte(pb); /* version */
904 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
906 entries = get_be32(pb);
908 if(entries >= UINT_MAX / sizeof(int))
911 sc->keyframe_count = entries;
913 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
915 sc->keyframes = av_malloc(entries * sizeof(int));
918 for(i=0; i<entries; i++) {
919 sc->keyframes[i] = get_be32(pb);
920 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
925 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
927 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
928 MOVStreamContext *sc = st->priv_data;
929 unsigned int i, entries, sample_size;
931 get_byte(pb); /* version */
932 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
934 sample_size = get_be32(pb);
935 if (!sc->sample_size) /* do not overwrite value computed in stsd */
936 sc->sample_size = sample_size;
937 entries = get_be32(pb);
938 if(entries >= UINT_MAX / sizeof(int))
941 sc->sample_count = entries;
945 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
947 sc->sample_sizes = av_malloc(entries * sizeof(int));
948 if (!sc->sample_sizes)
950 for(i=0; i<entries; i++) {
951 sc->sample_sizes[i] = get_be32(pb);
952 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
957 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
959 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
960 MOVStreamContext *sc = st->priv_data;
961 unsigned int i, entries;
963 int64_t total_sample_count=0;
965 get_byte(pb); /* version */
966 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
967 entries = get_be32(pb);
968 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
971 sc->stts_count = entries;
972 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
975 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
979 for(i=0; i<entries; i++) {
983 sample_count=get_be32(pb);
984 sample_duration = get_be32(pb);
985 sc->stts_data[i].count= sample_count;
986 sc->stts_data[i].duration= sample_duration;
988 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
990 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
992 duration+=(int64_t)sample_duration*sample_count;
993 total_sample_count+=sample_count;
996 st->nb_frames= total_sample_count;
998 st->duration= duration;
1002 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1004 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1005 MOVStreamContext *sc = st->priv_data;
1006 unsigned int i, entries;
1008 get_byte(pb); /* version */
1009 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1010 entries = get_be32(pb);
1011 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1014 sc->ctts_count = entries;
1015 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1018 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1020 for(i=0; i<entries; i++) {
1021 int count =get_be32(pb);
1022 int duration =get_be32(pb);
1025 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1027 url_fskip(pb, 8 * (entries - i - 1));
1030 sc->ctts_data[i].count = count;
1031 sc->ctts_data[i].duration= duration;
1033 sc->time_rate= ff_gcd(sc->time_rate, duration);
1038 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1041 MOVStreamContext *sc;
1043 st = av_new_stream(c->fc, c->fc->nb_streams);
1045 sc = av_mallocz(sizeof(MOVStreamContext));
1052 st->codec->codec_type = CODEC_TYPE_DATA;
1053 st->start_time = 0; /* XXX: check */
1055 return mov_read_default(c, pb, atom);
1058 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1060 uint16_t str_size = get_be16(pb); /* string length */;
1062 get_be16(pb); /* skip language */
1063 get_buffer(pb, str, FFMIN(size, str_size));
1066 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1068 uint64_t end = url_ftell(pb) + atom.size;
1070 while (url_ftell(pb) + 8 < end) {
1071 uint32_t tag_size = get_be32(pb);
1072 uint32_t tag = get_le32(pb);
1073 uint64_t next = url_ftell(pb) + tag_size - 8;
1075 if (next > end) // stop if tag_size is wrong
1079 case MKTAG(0xa9,'n','a','m'):
1080 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1082 case MKTAG(0xa9,'w','r','t'):
1083 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1085 case MKTAG(0xa9,'c','p','y'):
1086 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1088 case MKTAG(0xa9,'i','n','f'):
1089 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1095 url_fseek(pb, next, SEEK_SET);
1101 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1103 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1104 int version = get_byte(pb);
1106 get_byte(pb); get_byte(pb);
1107 get_byte(pb); /* flags */
1109 MOV_TRACK_ENABLED 0x0001
1110 MOV_TRACK_IN_MOVIE 0x0002
1111 MOV_TRACK_IN_PREVIEW 0x0004
1112 MOV_TRACK_IN_POSTER 0x0008
1119 get_be32(pb); /* creation time */
1120 get_be32(pb); /* modification time */
1122 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1123 get_be32(pb); /* reserved */
1124 st->start_time = 0; /* check */
1125 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1126 get_be32(pb); /* reserved */
1127 get_be32(pb); /* reserved */
1129 get_be16(pb); /* layer */
1130 get_be16(pb); /* alternate group */
1131 get_be16(pb); /* volume */
1132 get_be16(pb); /* reserved */
1134 url_fskip(pb, 36); /* display matrix */
1136 /* those are fixed-point */
1137 get_be32(pb); /* track width */
1138 get_be32(pb); /* track height */
1143 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1144 /* like the files created with Adobe Premiere 5.0, for samples see */
1145 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1146 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1151 return 0; /* continue */
1152 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1153 url_fskip(pb, atom.size - 4);
1156 atom.type = get_le32(pb);
1159 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1160 url_fskip(pb, atom.size);
1163 err = mov_read_mdat(c, pb, atom);
1167 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1172 uint8_t *moov_data; /* uncompressed data */
1173 long cmov_len, moov_len;
1176 get_be32(pb); /* dcom atom */
1177 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1179 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1180 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1183 get_be32(pb); /* cmvd atom */
1184 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1186 moov_len = get_be32(pb); /* uncompressed size */
1187 cmov_len = atom.size - 6 * 4;
1189 cmov_data = av_malloc(cmov_len);
1192 moov_data = av_malloc(moov_len);
1197 get_buffer(pb, cmov_data, cmov_len);
1198 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1200 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1202 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1204 atom.size = moov_len;
1206 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1208 ret = mov_read_default(c, &ctx, atom);
1213 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1218 /* edit list atom */
1219 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1221 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1224 get_byte(pb); /* version */
1225 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1226 edit_count= sc->edit_count = get_be32(pb); /* entries */
1228 for(i=0; i<edit_count; i++){
1229 get_be32(pb); /* Track duration */
1230 get_be32(pb); /* Media time */
1231 get_be32(pb); /* Media rate */
1233 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1237 static const MOVParseTableEntry mov_default_parse_table[] = {
1239 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1240 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1241 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1242 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1243 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1244 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1245 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1246 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1247 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1248 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1249 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1250 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1251 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1252 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1253 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1254 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1255 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1256 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1257 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1258 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1259 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1260 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1261 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1262 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1263 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1264 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1265 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1266 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1267 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1268 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1269 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1270 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1271 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1275 /* XXX: is it sufficient ? */
1276 static int mov_probe(AVProbeData *p)
1278 unsigned int offset;
1282 /* check file header */
1285 /* ignore invalid offset */
1286 if ((offset + 8) > (unsigned int)p->buf_size)
1288 tag = AV_RL32(p->buf + offset + 4);
1290 /* check for obvious tags */
1291 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1292 case MKTAG( 'm', 'o', 'o', 'v' ):
1293 case MKTAG( 'm', 'd', 'a', 't' ):
1294 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1295 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1296 return AVPROBE_SCORE_MAX;
1297 /* those are more common words, so rate then a bit less */
1298 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1299 case MKTAG( 'w', 'i', 'd', 'e' ):
1300 case MKTAG( 'f', 'r', 'e', 'e' ):
1301 case MKTAG( 'j', 'u', 'n', 'k' ):
1302 case MKTAG( 'p', 'i', 'c', 't' ):
1303 return AVPROBE_SCORE_MAX - 5;
1304 case MKTAG( 'f', 't', 'y', 'p' ):
1305 case MKTAG( 's', 'k', 'i', 'p' ):
1306 case MKTAG( 'u', 'u', 'i', 'd' ):
1307 offset = AV_RB32(p->buf+offset) + offset;
1308 /* if we only find those cause probedata is too small at least rate them */
1309 score = AVPROBE_SCORE_MAX - 50;
1312 /* unrecognized tag */
1319 static void mov_build_index(MOVContext *mov, AVStream *st)
1321 MOVStreamContext *sc = st->priv_data;
1322 offset_t current_offset;
1323 int64_t current_dts = 0;
1324 unsigned int stts_index = 0;
1325 unsigned int stsc_index = 0;
1326 unsigned int stss_index = 0;
1327 unsigned int i, j, k;
1329 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1330 unsigned int current_sample = 0;
1331 unsigned int stts_sample = 0;
1332 unsigned int keyframe, sample_size;
1333 unsigned int distance = 0;
1335 st->nb_frames = sc->sample_count;
1336 for (i = 0; i < sc->chunk_count; i++) {
1337 current_offset = sc->chunk_offsets[i];
1338 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1339 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1341 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1342 if (current_sample >= sc->sample_count) {
1343 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1346 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1349 if (stss_index + 1 < sc->keyframe_count)
1352 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1353 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1354 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1355 current_offset, current_dts, sample_size, distance, keyframe);
1356 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1357 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1358 keyframe ? AVINDEX_KEYFRAME : 0);
1359 current_offset += sample_size;
1360 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1361 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1365 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1371 } else { /* read whole chunk */
1372 unsigned int chunk_samples, chunk_size, chunk_duration;
1373 for (i = 0; i < sc->chunk_count; i++) {
1374 current_offset = sc->chunk_offsets[i];
1375 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1376 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1378 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1379 /* get chunk size */
1380 if (sc->sample_size > 1 ||
1381 st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1382 chunk_size = chunk_samples * sc->sample_size;
1383 else if (sc->samples_per_frame > 0 &&
1384 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1385 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1386 else { /* workaround to find nearest next chunk offset */
1387 chunk_size = INT_MAX;
1388 for (j = 0; j < mov->fc->nb_streams; j++) {
1389 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1390 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1391 if (msc->chunk_offsets[k] > current_offset &&
1392 msc->chunk_offsets[k] - current_offset < chunk_size) {
1393 chunk_size = msc->chunk_offsets[k] - current_offset;
1394 msc->next_chunk = k;
1399 /* check for last chunk */
1400 if (chunk_size == INT_MAX)
1401 for (j = 0; j < mov->mdat_count; j++) {
1402 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1403 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1404 if (mov->mdat_list[j].offset <= current_offset &&
1405 mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1406 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1408 assert(chunk_size != INT_MAX);
1409 for (j = 0; j < mov->fc->nb_streams; j++) {
1410 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1411 msc->next_chunk = 0;
1414 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1415 /* get chunk duration */
1417 while (chunk_samples > 0) {
1418 if (chunk_samples < sc->stts_data[stts_index].count) {
1419 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1420 sc->stts_data[stts_index].count -= chunk_samples;
1423 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1424 chunk_samples -= sc->stts_data[stts_index].count;
1425 if (stts_index + 1 < sc->stts_count) {
1430 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1431 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1432 assert(chunk_duration % sc->time_rate == 0);
1433 current_dts += chunk_duration / sc->time_rate;
1437 /* adjust sample count to avindex entries */
1438 sc->sample_count = st->nb_index_entries;
1441 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1443 MOVContext *mov = s->priv_data;
1444 ByteIOContext *pb = s->pb;
1446 MOV_atom_t atom = { 0, 0, 0 };
1450 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1451 atom.size = url_fsize(pb);
1453 atom.size = INT64_MAX;
1455 /* check MOV header */
1456 err = mov_read_default(mov, pb, atom);
1457 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1458 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1459 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1462 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1464 for(i=0; i<s->nb_streams; i++) {
1465 AVStream *st = s->streams[i];
1466 MOVStreamContext *sc = st->priv_data;
1468 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1469 (!sc->sample_size && !sc->sample_count)){
1470 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1471 sc->sample_count = 0; //ignore track
1477 sc->time_scale= mov->time_scale;
1478 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1480 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1481 st->codec->frame_size = sc->stts_data[0].duration;
1483 if(st->duration != AV_NOPTS_VALUE){
1484 assert(st->duration % sc->time_rate == 0);
1485 st->duration /= sc->time_rate;
1488 mov_build_index(mov, st);
1491 for(i=0; i<s->nb_streams; i++) {
1492 MOVStreamContext *sc = s->streams[i]->priv_data;
1493 /* Do not need those anymore. */
1494 av_freep(&sc->chunk_offsets);
1495 av_freep(&sc->sample_to_chunk);
1496 av_freep(&sc->sample_sizes);
1497 av_freep(&sc->keyframes);
1498 av_freep(&sc->stts_data);
1500 av_freep(&mov->mdat_list);
1504 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1506 MOVContext *mov = s->priv_data;
1507 MOVStreamContext *sc = 0;
1508 AVIndexEntry *sample = 0;
1509 int64_t best_dts = INT64_MAX;
1512 for (i = 0; i < s->nb_streams; i++) {
1513 AVStream *st = s->streams[i];
1514 MOVStreamContext *msc = st->priv_data;
1515 if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1516 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1517 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1518 AV_TIME_BASE, msc->time_scale);
1519 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1520 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1521 (!url_is_streamed(s->pb) &&
1522 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1523 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1524 sample = current_sample;
1532 /* must be done just before reading, to avoid infinite loop on sample */
1533 sc->current_sample++;
1534 if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1535 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1536 sc->ffindex, sample->pos);
1539 #ifdef CONFIG_DV_DEMUXER
1540 if (sc->dv_audio_container) {
1541 dv_get_packet(mov->dv_demux, pkt);
1542 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1545 av_get_packet(s->pb, pkt, sample->size);
1546 #ifdef CONFIG_DV_DEMUXER
1547 if (mov->dv_demux) {
1548 void *pkt_destruct_func = pkt->destruct;
1549 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1550 pkt->destruct = pkt_destruct_func;
1554 pkt->stream_index = sc->ffindex;
1555 pkt->dts = sample->timestamp;
1556 if (sc->ctts_data) {
1557 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1558 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1559 /* update ctts context */
1560 sc->sample_to_ctime_sample++;
1561 if (sc->sample_to_ctime_index < sc->ctts_count &&
1562 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1563 sc->sample_to_ctime_index++;
1564 sc->sample_to_ctime_sample = 0;
1567 pkt->pts = pkt->dts;
1569 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1570 pkt->pos = sample->pos;
1571 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1572 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1576 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1578 MOVStreamContext *sc = st->priv_data;
1579 int sample, time_sample;
1582 sample = av_index_search_timestamp(st, timestamp, flags);
1583 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1584 if (sample < 0) /* not sure what to do */
1586 sc->current_sample = sample;
1587 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1588 /* adjust ctts index */
1589 if (sc->ctts_data) {
1591 for (i = 0; i < sc->ctts_count; i++) {
1592 int next = time_sample + sc->ctts_data[i].count;
1593 if (next > sc->current_sample) {
1594 sc->sample_to_ctime_index = i;
1595 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1604 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1607 int64_t seek_timestamp, timestamp;
1611 if (stream_index >= s->nb_streams)
1614 st = s->streams[stream_index];
1615 sample = mov_seek_stream(st, sample_time, flags);
1619 /* adjust seek timestamp to found sample timestamp */
1620 seek_timestamp = st->index_entries[sample].timestamp;
1622 for (i = 0; i < s->nb_streams; i++) {
1624 if (stream_index == i || st->discard == AVDISCARD_ALL)
1627 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1628 mov_seek_stream(st, timestamp, flags);
1633 static int mov_read_close(AVFormatContext *s)
1636 MOVContext *mov = s->priv_data;
1637 for(i=0; i<s->nb_streams; i++) {
1638 MOVStreamContext *sc = s->streams[i]->priv_data;
1639 av_freep(&sc->ctts_data);
1642 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1643 av_freep(&mov->dv_fctx->streams[i]->codec);
1644 av_freep(&mov->dv_fctx->streams[i]);
1646 av_freep(&mov->dv_fctx);
1647 av_freep(&mov->dv_demux);
1652 AVInputFormat mov_demuxer = {
1653 "mov,mp4,m4a,3gp,3g2,mj2",
1654 "QuickTime/MPEG4/Motion JPEG 2000 format",