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;
112 typedef struct MOVContext {
115 int64_t duration; /* duration of the longest track */
116 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
117 int found_mdat; /* we suppose we have enough data to read the file */
120 MOVStreamContext *streams[MAX_STREAMS];
122 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
123 /* NOTE: for recursion save to/ restore from local variable! */
125 AVPaletteControl palette_control;
126 MOV_mdat_t *mdat_list;
128 DVDemuxContext *dv_demux;
129 AVFormatContext *dv_fctx;
130 int isom; /* 1 if file is ISO Media (mp4/3gp) */
134 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
136 /* those functions parse an atom */
138 1: found what I wanted, exit
139 0: continue to parse next atom
140 -1: error occured, exit
142 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
144 /* links atom IDs to parse functions */
145 typedef struct MOVParseTableEntry {
147 mov_parse_function func;
148 } MOVParseTableEntry;
150 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
152 int64_t total_size = 0;
157 a.offset = atom.offset;
160 atom.size = INT64_MAX;
161 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
165 a.size = get_be32(pb);
166 a.type = get_le32(pb);
170 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
171 if (a.size == 1) { /* 64 bit extended size */
172 a.size = get_be64(pb) - 8;
177 a.size = atom.size - total_size;
182 if(a.size < 0 || a.size > atom.size - total_size)
185 for (i = 0; c->parse_table[i].type != 0L
186 && c->parse_table[i].type != a.type; i++)
189 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
190 url_fskip(pb, a.size);
192 offset_t start_pos = url_ftell(pb);
194 err = (c->parse_table[i].func)(c, pb, a);
195 left = a.size - url_ftell(pb) + start_pos;
196 if (left > 0) /* skip garbage at atom end */
201 total_size += a.size;
204 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
205 url_fskip(pb, atom.size - total_size);
211 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
213 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
217 get_byte(pb); /* version */
218 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
221 ctype = get_le32(pb);
222 type = get_le32(pb); /* component subtype */
224 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
225 dprintf(c->fc, "stype= %c%c%c%c\n", *((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;
236 st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
238 get_be32(pb); /* component manufacture */
239 get_be32(pb); /* component flags */
240 get_be32(pb); /* component flags mask */
243 return 0; /* nothing left to read */
245 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
249 static int mp4_read_descr_len(ByteIOContext *pb)
254 int c = get_byte(pb);
255 len = (len << 7) | (c & 0x7f);
262 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
266 len = mp4_read_descr_len(pb);
267 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
271 #define MP4ESDescrTag 0x03
272 #define MP4DecConfigDescrTag 0x04
273 #define MP4DecSpecificDescrTag 0x05
275 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
277 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
280 get_be32(pb); /* version + flags */
281 len = mp4_read_descr(c, pb, &tag);
282 if (tag == MP4ESDescrTag) {
283 get_be16(pb); /* ID */
284 get_byte(pb); /* priority */
286 get_be16(pb); /* ID */
288 len = mp4_read_descr(c, pb, &tag);
289 if (tag == MP4DecConfigDescrTag) {
290 int object_type_id = get_byte(pb);
291 get_byte(pb); /* stream type */
292 get_be24(pb); /* buffer size db */
293 get_be32(pb); /* max bitrate */
294 get_be32(pb); /* avg bitrate */
296 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
297 dprintf(c->fc, "esds object type id %d\n", object_type_id);
298 len = mp4_read_descr(c, pb, &tag);
299 if (tag == MP4DecSpecificDescrTag) {
300 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
301 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
302 if (st->codec->extradata) {
303 get_buffer(pb, st->codec->extradata, len);
304 st->codec->extradata_size = len;
306 if ((*st->codec->extradata >> 3) == 29) {
307 st->codec->codec_id = CODEC_ID_MP3ON4;
315 /* this atom contains actual media data */
316 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
318 if(atom.size == 0) /* wrong one (MP4) */
320 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
321 c->mdat_list[c->mdat_count].offset = atom.offset;
322 c->mdat_list[c->mdat_count].size = atom.size;
325 c->mdat_offset = atom.offset;
327 return 1; /* found both, just go */
328 url_fskip(pb, atom.size);
329 return 0; /* now go for moov */
332 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
334 uint32_t type = get_le32(pb);
336 if (type != MKTAG('q','t',' ',' '))
338 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
339 get_be32(pb); /* minor version */
340 url_fskip(pb, atom.size - 8);
344 /* this atom should contain all header atoms */
345 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
349 err = mov_read_default(c, pb, atom);
350 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
351 /* so we don't parse the whole file if over a network */
354 return 1; /* found both, just go */
355 return 0; /* now go for mdat */
359 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
361 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
362 MOVStreamContext *sc = st->priv_data;
363 int version = get_byte(pb);
367 return 1; /* unsupported */
369 get_byte(pb); get_byte(pb);
370 get_byte(pb); /* flags */
376 get_be32(pb); /* creation time */
377 get_be32(pb); /* modification time */
380 sc->time_scale = get_be32(pb);
381 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
383 lang = get_be16(pb); /* language */
384 ff_mov_lang_to_iso639(lang, st->language);
385 get_be16(pb); /* quality */
390 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
392 int version = get_byte(pb); /* version */
393 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
399 get_be32(pb); /* creation time */
400 get_be32(pb); /* modification time */
402 c->time_scale = get_be32(pb); /* time scale */
404 dprintf(c->fc, "time scale = %i\n", c->time_scale);
406 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
407 get_be32(pb); /* preferred scale */
409 get_be16(pb); /* preferred volume */
411 url_fskip(pb, 10); /* reserved */
413 url_fskip(pb, 36); /* display matrix */
415 get_be32(pb); /* preview time */
416 get_be32(pb); /* preview duration */
417 get_be32(pb); /* poster time */
418 get_be32(pb); /* selection time */
419 get_be32(pb); /* selection duration */
420 get_be32(pb); /* current time */
421 get_be32(pb); /* next track ID */
426 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
428 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
430 if((uint64_t)atom.size > (1<<30))
433 // currently SVQ3 decoder expect full STSD header - so let's fake it
434 // this should be fixed and just SMI header should be passed
435 av_free(st->codec->extradata);
436 st->codec->extradata_size = 0x5a + atom.size;
437 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
439 if (st->codec->extradata) {
440 memcpy(st->codec->extradata, "SVQ3", 4); // fake
441 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
442 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
444 url_fskip(pb, atom.size);
449 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
451 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
452 int little_endian = get_be16(pb);
455 switch (st->codec->codec_id) {
456 case CODEC_ID_PCM_S24BE:
457 st->codec->codec_id = CODEC_ID_PCM_S24LE;
459 case CODEC_ID_PCM_S32BE:
460 st->codec->codec_id = CODEC_ID_PCM_S32LE;
469 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
470 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
472 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
473 if((uint64_t)atom.size > (1<<30))
475 av_free(st->codec->extradata);
476 st->codec->extradata_size = atom.size + 8;
477 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
478 if (st->codec->extradata) {
479 AV_WL32(st->codec->extradata + 4, atom.type);
480 get_buffer(pb, st->codec->extradata + 8, atom.size);
482 url_fskip(pb, 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 mov_read_default(c, pb, atom);
506 url_fskip(pb, atom.size);
510 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
512 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
514 if((uint64_t)atom.size > (1<<30))
517 av_free(st->codec->extradata);
519 st->codec->extradata_size = atom.size;
520 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
522 if (st->codec->extradata) {
523 get_buffer(pb, st->codec->extradata, atom.size);
525 url_fskip(pb, atom.size);
530 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
532 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
533 MOVStreamContext *sc = st->priv_data;
534 unsigned int i, entries;
536 get_byte(pb); /* version */
537 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
539 entries = get_be32(pb);
541 if(entries >= UINT_MAX/sizeof(int64_t))
544 sc->chunk_count = entries;
545 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
546 if (!sc->chunk_offsets)
548 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
549 for(i=0; i<entries; i++) {
550 sc->chunk_offsets[i] = get_be32(pb);
552 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
553 for(i=0; i<entries; i++) {
554 sc->chunk_offsets[i] = get_be64(pb);
562 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
564 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
565 MOVStreamContext *sc = st->priv_data;
566 int entries, frames_per_sample;
568 uint8_t codec_name[32];
570 /* for palette traversal */
578 unsigned char *color_table;
580 unsigned char r, g, b;
582 get_byte(pb); /* version */
583 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
585 entries = get_be32(pb);
587 while(entries--) { //Parsing Sample description table
589 MOV_atom_t a = { 0, 0, 0 };
590 offset_t start_pos = url_ftell(pb);
591 int size = get_be32(pb); /* size */
592 format = get_le32(pb); /* data format */
594 get_be32(pb); /* reserved */
595 get_be16(pb); /* reserved */
596 get_be16(pb); /* index */
598 if (st->codec->codec_tag) {
599 /* multiple fourcc, just skip for now */
600 url_fskip(pb, size - (url_ftell(pb) - start_pos));
604 st->codec->codec_tag = format;
605 id = codec_get_id(codec_movaudio_tags, format);
606 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
607 st->codec->codec_type = CODEC_TYPE_AUDIO;
608 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
609 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
610 id = codec_get_id(codec_movvideo_tags, format);
612 id = codec_get_id(codec_bmp_tags, format);
614 st->codec->codec_type = CODEC_TYPE_VIDEO;
617 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
619 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
620 st->codec->codec_type);
622 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
623 st->codec->codec_id = id;
624 get_be16(pb); /* version */
625 get_be16(pb); /* revision level */
626 get_be32(pb); /* vendor */
627 get_be32(pb); /* temporal quality */
628 get_be32(pb); /* spacial quality */
630 st->codec->width = get_be16(pb); /* width */
631 st->codec->height = get_be16(pb); /* height */
633 get_be32(pb); /* horiz resolution */
634 get_be32(pb); /* vert resolution */
635 get_be32(pb); /* data size, always 0 */
636 frames_per_sample = get_be16(pb); /* frames per samples */
638 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
640 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
641 if (codec_name[0] <= 31) {
642 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
643 st->codec->codec_name[codec_name[0]] = 0;
646 st->codec->bits_per_sample = get_be16(pb); /* depth */
647 st->codec->color_table_id = get_be16(pb); /* colortable id */
649 /* figure out the palette situation */
650 color_depth = st->codec->bits_per_sample & 0x1F;
651 color_greyscale = st->codec->bits_per_sample & 0x20;
653 /* if the depth is 2, 4, or 8 bpp, file is palettized */
654 if ((color_depth == 2) || (color_depth == 4) ||
655 (color_depth == 8)) {
657 if (color_greyscale) {
659 /* compute the greyscale palette */
660 color_count = 1 << color_depth;
662 color_dec = 256 / (color_count - 1);
663 for (j = 0; j < color_count; j++) {
664 r = g = b = color_index;
665 c->palette_control.palette[j] =
666 (r << 16) | (g << 8) | (b);
667 color_index -= color_dec;
672 } else if (st->codec->color_table_id & 0x08) {
674 /* if flag bit 3 is set, use the default palette */
675 color_count = 1 << color_depth;
676 if (color_depth == 2)
677 color_table = ff_qt_default_palette_4;
678 else if (color_depth == 4)
679 color_table = ff_qt_default_palette_16;
681 color_table = ff_qt_default_palette_256;
683 for (j = 0; j < color_count; j++) {
684 r = color_table[j * 4 + 0];
685 g = color_table[j * 4 + 1];
686 b = color_table[j * 4 + 2];
687 c->palette_control.palette[j] =
688 (r << 16) | (g << 8) | (b);
693 /* load the palette from the file */
694 color_start = get_be32(pb);
695 color_count = get_be16(pb);
696 color_end = get_be16(pb);
697 for (j = color_start; j <= color_end; j++) {
698 /* each R, G, or B component is 16 bits;
699 * only use the top 8 bits; skip alpha bytes
709 c->palette_control.palette[j] =
710 (r << 16) | (g << 8) | (b);
714 st->codec->palctrl = &c->palette_control;
715 st->codec->palctrl->palette_changed = 1;
717 st->codec->palctrl = NULL;
718 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
720 uint16_t version = get_be16(pb);
722 st->codec->codec_id = id;
723 get_be16(pb); /* revision level */
724 get_be32(pb); /* vendor */
726 st->codec->channels = get_be16(pb); /* channel count */
727 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
728 st->codec->bits_per_sample = get_be16(pb); /* sample size */
729 /* do we need to force to 16 for AMR ? */
731 /* handle specific s8 codec */
732 get_be16(pb); /* compression id = 0*/
733 get_be16(pb); /* packet size = 0 */
735 st->codec->sample_rate = ((get_be32(pb) >> 16));
737 switch (st->codec->codec_id) {
738 case CODEC_ID_PCM_S8:
739 case CODEC_ID_PCM_U8:
740 if (st->codec->bits_per_sample == 16)
741 st->codec->codec_id = CODEC_ID_PCM_S16BE;
743 case CODEC_ID_PCM_S16LE:
744 case CODEC_ID_PCM_S16BE:
745 if (st->codec->bits_per_sample == 8)
746 st->codec->codec_id = CODEC_ID_PCM_S8;
747 else if (st->codec->bits_per_sample == 24)
748 st->codec->codec_id = CODEC_ID_PCM_S24BE;
754 //Read QT version 1 fields. In version 0 these do not exist.
755 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
758 sc->samples_per_frame = get_be32(pb);
759 get_be32(pb); /* bytes per packet */
760 sc->bytes_per_frame = get_be32(pb);
761 get_be32(pb); /* bytes per sample */
762 } else if(version==2) {
763 get_be32(pb); /* sizeof struct only */
764 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
765 st->codec->channels = get_be32(pb);
766 get_be32(pb); /* always 0x7F000000 */
767 get_be32(pb); /* bits per channel if sound is uncompressed */
768 get_be32(pb); /* lcpm format specific flag */
769 get_be32(pb); /* bytes per audio packet if constant */
770 get_be32(pb); /* lpcm frames per audio packet if constant */
774 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
775 if (bits_per_sample) {
776 st->codec->bits_per_sample = bits_per_sample;
777 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
780 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
781 url_fskip(pb, size - (url_ftell(pb) - start_pos));
783 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
784 a.size = size - (url_ftell(pb) - start_pos);
786 mov_read_default(c, pb, a);
788 url_fskip(pb, a.size);
791 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
792 st->codec->sample_rate= sc->time_scale;
795 /* special codec parameters handling */
796 switch (st->codec->codec_id) {
797 #ifdef CONFIG_H261_DECODER
800 #ifdef CONFIG_H263_DECODER
803 #ifdef CONFIG_MPEG4_DECODER
806 st->codec->width= 0; /* let decoder init width/height */
807 st->codec->height= 0;
809 #ifdef CONFIG_LIBFAAD
812 #ifdef CONFIG_VORBIS_DECODER
813 case CODEC_ID_VORBIS:
815 case CODEC_ID_MP3ON4:
816 st->codec->sample_rate= 0; /* let decoder init parameters properly */
818 #ifdef CONFIG_DV_DEMUXER
819 case CODEC_ID_DVAUDIO:
820 c->dv_fctx = av_alloc_format_context();
821 c->dv_demux = dv_init_demux(c->dv_fctx);
823 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
826 sc->dv_audio_container = 1;
827 st->codec->codec_id = CODEC_ID_PCM_S16LE;
830 /* no ifdef since parameters are always those */
831 case CODEC_ID_AMR_WB:
832 st->codec->sample_rate= 16000;
833 st->codec->channels= 1; /* really needed */
835 case CODEC_ID_AMR_NB:
836 st->codec->sample_rate= 8000;
837 st->codec->channels= 1; /* really needed */
841 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
842 st->need_parsing = AVSTREAM_PARSE_FULL;
851 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
853 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
854 MOVStreamContext *sc = st->priv_data;
855 unsigned int i, entries;
857 get_byte(pb); /* version */
858 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
860 entries = get_be32(pb);
862 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
865 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
867 sc->sample_to_chunk_sz = entries;
868 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
869 if (!sc->sample_to_chunk)
871 for(i=0; i<entries; i++) {
872 sc->sample_to_chunk[i].first = get_be32(pb);
873 sc->sample_to_chunk[i].count = get_be32(pb);
874 sc->sample_to_chunk[i].id = get_be32(pb);
879 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
881 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
882 MOVStreamContext *sc = st->priv_data;
883 unsigned int i, entries;
885 get_byte(pb); /* version */
886 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
888 entries = get_be32(pb);
890 if(entries >= UINT_MAX / sizeof(int))
893 sc->keyframe_count = entries;
895 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
897 sc->keyframes = av_malloc(entries * sizeof(int));
900 for(i=0; i<entries; i++) {
901 sc->keyframes[i] = get_be32(pb);
902 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
907 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
909 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
910 MOVStreamContext *sc = st->priv_data;
911 unsigned int i, entries, sample_size;
913 get_byte(pb); /* version */
914 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
916 sample_size = get_be32(pb);
917 if (!sc->sample_size) /* do not overwrite value computed in stsd */
918 sc->sample_size = sample_size;
919 entries = get_be32(pb);
920 if(entries >= UINT_MAX / sizeof(int))
923 sc->sample_count = entries;
927 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
929 sc->sample_sizes = av_malloc(entries * sizeof(int));
930 if (!sc->sample_sizes)
932 for(i=0; i<entries; i++) {
933 sc->sample_sizes[i] = get_be32(pb);
934 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
939 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
941 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
942 MOVStreamContext *sc = st->priv_data;
943 unsigned int i, entries;
945 int64_t total_sample_count=0;
947 get_byte(pb); /* version */
948 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
949 entries = get_be32(pb);
950 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
953 sc->stts_count = entries;
954 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
956 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
960 for(i=0; i<entries; i++) {
964 sample_count=get_be32(pb);
965 sample_duration = get_be32(pb);
966 sc->stts_data[i].count= sample_count;
967 sc->stts_data[i].duration= sample_duration;
969 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
971 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
973 duration+=(int64_t)sample_duration*sample_count;
974 total_sample_count+=sample_count;
977 st->nb_frames= total_sample_count;
979 st->duration= duration;
983 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
985 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
986 MOVStreamContext *sc = st->priv_data;
987 unsigned int i, entries;
989 get_byte(pb); /* version */
990 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
991 entries = get_be32(pb);
992 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
995 sc->ctts_count = entries;
996 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
998 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1000 for(i=0; i<entries; i++) {
1001 int count =get_be32(pb);
1002 int duration =get_be32(pb);
1005 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1007 url_fskip(pb, 8 * (entries - i - 1));
1010 sc->ctts_data[i].count = count;
1011 sc->ctts_data[i].duration= duration;
1013 sc->time_rate= ff_gcd(sc->time_rate, duration);
1018 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1021 MOVStreamContext *sc;
1023 st = av_new_stream(c->fc, c->fc->nb_streams);
1025 sc = av_mallocz(sizeof(MOVStreamContext));
1032 st->codec->codec_type = CODEC_TYPE_DATA;
1033 st->start_time = 0; /* XXX: check */
1034 c->streams[c->fc->nb_streams-1] = sc;
1036 return mov_read_default(c, pb, atom);
1039 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1041 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1042 int version = get_byte(pb);
1044 get_byte(pb); get_byte(pb);
1045 get_byte(pb); /* flags */
1047 MOV_TRACK_ENABLED 0x0001
1048 MOV_TRACK_IN_MOVIE 0x0002
1049 MOV_TRACK_IN_PREVIEW 0x0004
1050 MOV_TRACK_IN_POSTER 0x0008
1057 get_be32(pb); /* creation time */
1058 get_be32(pb); /* modification time */
1060 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1061 get_be32(pb); /* reserved */
1062 st->start_time = 0; /* check */
1063 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1064 get_be32(pb); /* reserved */
1065 get_be32(pb); /* reserved */
1067 get_be16(pb); /* layer */
1068 get_be16(pb); /* alternate group */
1069 get_be16(pb); /* volume */
1070 get_be16(pb); /* reserved */
1072 url_fskip(pb, 36); /* display matrix */
1074 /* those are fixed-point */
1075 get_be32(pb); /* track width */
1076 get_be32(pb); /* track height */
1081 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1082 /* like the files created with Adobe Premiere 5.0, for samples see */
1083 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1084 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1089 return 0; /* continue */
1090 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1091 url_fskip(pb, atom.size - 4);
1094 atom.type = get_le32(pb);
1097 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1098 url_fskip(pb, atom.size);
1101 err = mov_read_mdat(c, pb, atom);
1105 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1110 uint8_t *moov_data; /* uncompressed data */
1111 long cmov_len, moov_len;
1114 get_be32(pb); /* dcom atom */
1115 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1117 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1118 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1121 get_be32(pb); /* cmvd atom */
1122 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1124 moov_len = get_be32(pb); /* uncompressed size */
1125 cmov_len = atom.size - 6 * 4;
1127 cmov_data = av_malloc(cmov_len);
1130 moov_data = av_malloc(moov_len);
1135 get_buffer(pb, cmov_data, cmov_len);
1136 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1138 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1140 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1142 atom.size = moov_len;
1144 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1146 ret = mov_read_default(c, &ctx, atom);
1151 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1156 /* edit list atom */
1157 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1161 get_byte(pb); /* version */
1162 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1163 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1165 for(i=0; i<edit_count; i++){
1166 get_be32(pb); /* Track duration */
1167 get_be32(pb); /* Media time */
1168 get_be32(pb); /* Media rate */
1170 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1174 static const MOVParseTableEntry mov_default_parse_table[] = {
1176 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1177 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1178 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1179 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1180 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1181 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1182 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1183 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1184 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1185 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1186 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1187 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1188 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1189 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1190 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1191 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1192 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1193 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1194 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1195 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1196 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1197 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1198 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1199 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1200 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1201 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1202 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1203 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1204 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1205 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1206 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1210 /* XXX: is it sufficient ? */
1211 static int mov_probe(AVProbeData *p)
1213 unsigned int offset;
1217 /* check file header */
1220 /* ignore invalid offset */
1221 if ((offset + 8) > (unsigned int)p->buf_size)
1223 tag = AV_RL32(p->buf + offset + 4);
1225 /* check for obvious tags */
1226 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1227 case MKTAG( 'm', 'o', 'o', 'v' ):
1228 case MKTAG( 'm', 'd', 'a', 't' ):
1229 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1230 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1231 return AVPROBE_SCORE_MAX;
1232 /* those are more common words, so rate then a bit less */
1233 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1234 case MKTAG( 'w', 'i', 'd', 'e' ):
1235 case MKTAG( 'f', 'r', 'e', 'e' ):
1236 case MKTAG( 'j', 'u', 'n', 'k' ):
1237 case MKTAG( 'p', 'i', 'c', 't' ):
1238 return AVPROBE_SCORE_MAX - 5;
1239 case MKTAG( 'f', 't', 'y', 'p' ):
1240 case MKTAG( 's', 'k', 'i', 'p' ):
1241 case MKTAG( 'u', 'u', 'i', 'd' ):
1242 offset = AV_RB32(p->buf+offset) + offset;
1243 /* if we only find those cause probedata is too small at least rate them */
1244 score = AVPROBE_SCORE_MAX - 50;
1247 /* unrecognized tag */
1254 static void mov_build_index(MOVContext *mov, AVStream *st)
1256 MOVStreamContext *sc = st->priv_data;
1257 offset_t current_offset;
1258 int64_t current_dts = 0;
1259 unsigned int stts_index = 0;
1260 unsigned int stsc_index = 0;
1261 unsigned int stss_index = 0;
1262 unsigned int i, j, k;
1264 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1265 unsigned int current_sample = 0;
1266 unsigned int stts_sample = 0;
1267 unsigned int keyframe, sample_size;
1268 unsigned int distance = 0;
1270 st->nb_frames = sc->sample_count;
1271 for (i = 0; i < sc->chunk_count; i++) {
1272 current_offset = sc->chunk_offsets[i];
1273 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1275 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1276 if (current_sample >= sc->sample_count) {
1277 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1280 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1283 if (stss_index + 1 < sc->keyframe_count)
1286 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1287 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1288 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1289 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1290 current_offset += sample_size;
1291 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1292 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1296 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1302 } else { /* read whole chunk */
1303 unsigned int chunk_samples, chunk_size, chunk_duration;
1305 for (i = 0; i < sc->chunk_count; i++) {
1306 current_offset = sc->chunk_offsets[i];
1307 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1309 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1310 /* get chunk size */
1311 if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1312 chunk_size = chunk_samples * sc->sample_size;
1313 else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1314 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1315 else { /* workaround to find nearest next chunk offset */
1316 chunk_size = INT_MAX;
1317 for (j = 0; j < mov->total_streams; j++) {
1318 MOVStreamContext *msc = mov->streams[j];
1320 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1321 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1322 chunk_size = msc->chunk_offsets[k] - current_offset;
1323 msc->next_chunk = k;
1328 /* check for last chunk */
1329 if (chunk_size == INT_MAX)
1330 for (j = 0; j < mov->mdat_count; j++) {
1331 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1332 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1333 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1334 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1336 assert(chunk_size != INT_MAX);
1337 for (j = 0; j < mov->total_streams; j++) {
1338 mov->streams[j]->next_chunk = 0;
1341 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1342 /* get chunk duration */
1344 while (chunk_samples > 0) {
1345 if (chunk_samples < sc->stts_data[stts_index].count) {
1346 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1347 sc->stts_data[stts_index].count -= chunk_samples;
1350 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1351 chunk_samples -= sc->stts_data[stts_index].count;
1352 if (stts_index + 1 < sc->stts_count) {
1357 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1358 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1359 assert(chunk_duration % sc->time_rate == 0);
1360 current_dts += chunk_duration / sc->time_rate;
1364 /* adjust sample count to avindex entries */
1365 sc->sample_count = st->nb_index_entries;
1368 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1370 MOVContext *mov = s->priv_data;
1371 ByteIOContext *pb = &s->pb;
1373 MOV_atom_t atom = { 0, 0, 0 };
1376 mov->parse_table = mov_default_parse_table;
1378 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1379 atom.size = url_fsize(pb);
1381 atom.size = INT64_MAX;
1383 /* check MOV header */
1384 err = mov_read_default(mov, pb, atom);
1385 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1386 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1387 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1390 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1392 /* some cleanup : make sure we are on the mdat atom */
1393 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1394 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1396 mov->total_streams = s->nb_streams;
1398 for(i=0; i<mov->total_streams; i++) {
1399 MOVStreamContext *sc = mov->streams[i];
1400 AVStream *st = s->streams[i];
1402 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1403 (!sc->sample_size && !sc->sample_count)){
1404 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1405 sc->sample_count = 0; //ignore track
1411 sc->time_scale= mov->time_scale;
1412 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1414 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1415 st->codec->frame_size = sc->stts_data[0].duration;
1417 if(st->duration != AV_NOPTS_VALUE){
1418 assert(st->duration % sc->time_rate == 0);
1419 st->duration /= sc->time_rate;
1422 mov_build_index(mov, st);
1425 for(i=0; i<mov->total_streams; i++) {
1426 /* Do not need those anymore. */
1427 av_freep(&mov->streams[i]->chunk_offsets);
1428 av_freep(&mov->streams[i]->sample_to_chunk);
1429 av_freep(&mov->streams[i]->sample_sizes);
1430 av_freep(&mov->streams[i]->keyframes);
1431 av_freep(&mov->streams[i]->stts_data);
1433 av_freep(&mov->mdat_list);
1437 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1439 MOVContext *mov = s->priv_data;
1440 MOVStreamContext *sc = 0;
1441 AVIndexEntry *sample = 0;
1442 int64_t best_dts = INT64_MAX;
1445 for (i = 0; i < mov->total_streams; i++) {
1446 MOVStreamContext *msc = mov->streams[i];
1448 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1449 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1450 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1452 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1453 if (dts < best_dts) {
1454 sample = current_sample;
1462 /* must be done just before reading, to avoid infinite loop on sample */
1463 sc->current_sample++;
1464 if (sample->pos >= url_fsize(&s->pb)) {
1465 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1468 #ifdef CONFIG_DV_DEMUXER
1469 if (sc->dv_audio_container) {
1470 dv_get_packet(mov->dv_demux, pkt);
1471 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1474 url_fseek(&s->pb, sample->pos, SEEK_SET);
1475 av_get_packet(&s->pb, pkt, sample->size);
1476 #ifdef CONFIG_DV_DEMUXER
1477 if (mov->dv_demux) {
1478 void *pkt_destruct_func = pkt->destruct;
1479 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1480 pkt->destruct = pkt_destruct_func;
1484 pkt->stream_index = sc->ffindex;
1485 pkt->dts = sample->timestamp;
1486 if (sc->ctts_data) {
1487 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1488 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1489 /* update ctts context */
1490 sc->sample_to_ctime_sample++;
1491 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1492 sc->sample_to_ctime_index++;
1493 sc->sample_to_ctime_sample = 0;
1496 pkt->pts = pkt->dts;
1498 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1499 pkt->pos = sample->pos;
1500 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1504 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1506 MOVStreamContext *sc = st->priv_data;
1507 int sample, time_sample;
1510 sample = av_index_search_timestamp(st, timestamp, flags);
1511 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1512 if (sample < 0) /* not sure what to do */
1514 sc->current_sample = sample;
1515 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1516 /* adjust ctts index */
1517 if (sc->ctts_data) {
1519 for (i = 0; i < sc->ctts_count; i++) {
1520 int next = time_sample + sc->ctts_data[i].count;
1521 if (next > sc->current_sample) {
1522 sc->sample_to_ctime_index = i;
1523 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1532 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1535 int64_t seek_timestamp, timestamp;
1539 if (stream_index >= s->nb_streams)
1542 st = s->streams[stream_index];
1543 sample = mov_seek_stream(st, sample_time, flags);
1547 /* adjust seek timestamp to found sample timestamp */
1548 seek_timestamp = st->index_entries[sample].timestamp;
1550 for (i = 0; i < s->nb_streams; i++) {
1552 if (stream_index == i || st->discard == AVDISCARD_ALL)
1555 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1556 mov_seek_stream(st, timestamp, flags);
1561 static int mov_read_close(AVFormatContext *s)
1564 MOVContext *mov = s->priv_data;
1565 for(i=0; i<mov->total_streams; i++) {
1566 av_freep(&mov->streams[i]->ctts_data);
1567 av_freep(&mov->streams[i]);
1570 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1571 av_freep(&mov->dv_fctx->streams[i]->codec);
1572 av_freep(&mov->dv_fctx->streams[i]);
1574 av_freep(&mov->dv_fctx);
1575 av_freep(&mov->dv_demux);
1580 AVInputFormat mov_demuxer = {
1581 "mov,mp4,m4a,3gp,3g2,mj2",
1582 "QuickTime/MPEG4/Motion JPEG 2000 format",