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
66 typedef struct MOV_sample_to_chunk_tbl {
70 } MOV_sample_to_chunk_tbl;
75 int64_t size; /* total size (excluding the size and type fields) */
78 typedef struct MOV_mdat_atom_s {
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 Time2Sample *stts_data;
92 unsigned int ctts_count;
93 Time2Sample *ctts_data;
94 unsigned int edit_count; /* number of 'edit' (elst atom) */
95 unsigned int sample_to_chunk_sz;
96 MOV_sample_to_chunk_tbl *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_atom_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 /* Well, broken but suffisant for some MP4 streams */
281 get_be32(pb); /* version + flags */
282 len = mp4_read_descr(c, pb, &tag);
283 if (tag == MP4ESDescrTag) {
284 get_be16(pb); /* ID */
285 get_byte(pb); /* priority */
287 get_be16(pb); /* ID */
289 len = mp4_read_descr(c, pb, &tag);
290 if (tag == MP4DecConfigDescrTag) {
291 int object_type_id = get_byte(pb);
292 get_byte(pb); /* stream type */
293 get_be24(pb); /* buffer size db */
294 get_be32(pb); /* max bitrate */
295 get_be32(pb); /* avg bitrate */
297 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
298 dprintf(c->fc, "esds object type id %d\n", object_type_id);
299 len = mp4_read_descr(c, pb, &tag);
300 if (tag == MP4DecSpecificDescrTag) {
301 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
302 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
303 if (st->codec->extradata) {
304 get_buffer(pb, st->codec->extradata, len);
305 st->codec->extradata_size = len;
307 if ((*st->codec->extradata >> 3) == 29) {
308 st->codec->codec_id = CODEC_ID_MP3ON4;
316 /* this atom contains actual media data */
317 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
319 if(atom.size == 0) /* wrong one (MP4) */
321 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
322 c->mdat_list[c->mdat_count].offset = atom.offset;
323 c->mdat_list[c->mdat_count].size = atom.size;
326 c->mdat_offset = atom.offset;
328 return 1; /* found both, just go */
329 url_fskip(pb, atom.size);
330 return 0; /* now go for moov */
333 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
335 uint32_t type = get_le32(pb);
337 if (type != MKTAG('q','t',' ',' '))
339 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
340 get_be32(pb); /* minor version */
341 url_fskip(pb, atom.size - 8);
345 /* this atom should contain all header atoms */
346 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
350 err = mov_read_default(c, pb, atom);
351 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
352 /* so we don't parse the whole file if over a network */
355 return 1; /* found both, just go */
356 return 0; /* now go for mdat */
360 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
362 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
363 MOVStreamContext *sc = st->priv_data;
364 int version = get_byte(pb);
368 return 1; /* unsupported */
370 get_byte(pb); get_byte(pb);
371 get_byte(pb); /* flags */
377 get_be32(pb); /* creation time */
378 get_be32(pb); /* modification time */
381 sc->time_scale = get_be32(pb);
382 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
384 lang = get_be16(pb); /* language */
385 ff_mov_lang_to_iso639(lang, st->language);
386 get_be16(pb); /* quality */
391 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
393 int version = get_byte(pb); /* version */
394 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
400 get_be32(pb); /* creation time */
401 get_be32(pb); /* modification time */
403 c->time_scale = get_be32(pb); /* time scale */
405 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
407 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
408 get_be32(pb); /* preferred scale */
410 get_be16(pb); /* preferred volume */
412 url_fskip(pb, 10); /* reserved */
414 url_fskip(pb, 36); /* display matrix */
416 get_be32(pb); /* preview time */
417 get_be32(pb); /* preview duration */
418 get_be32(pb); /* poster time */
419 get_be32(pb); /* selection time */
420 get_be32(pb); /* selection duration */
421 get_be32(pb); /* current time */
422 get_be32(pb); /* next track ID */
427 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
429 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
431 if((uint64_t)atom.size > (1<<30))
434 // currently SVQ3 decoder expect full STSD header - so let's fake it
435 // this should be fixed and just SMI header should be passed
436 av_free(st->codec->extradata);
437 st->codec->extradata_size = 0x5a + atom.size;
438 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
440 if (st->codec->extradata) {
441 memcpy(st->codec->extradata, "SVQ3", 4); // fake
442 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
443 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
445 url_fskip(pb, atom.size);
450 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
452 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
453 int little_endian = get_be16(pb);
456 switch (st->codec->codec_id) {
457 case CODEC_ID_PCM_S24BE:
458 st->codec->codec_id = CODEC_ID_PCM_S24LE;
460 case CODEC_ID_PCM_S32BE:
461 st->codec->codec_id = CODEC_ID_PCM_S32LE;
470 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
471 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
473 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
474 if((uint64_t)atom.size > (1<<30))
476 av_free(st->codec->extradata);
477 st->codec->extradata_size = atom.size + 8;
478 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
479 if (st->codec->extradata) {
480 AV_WL32(st->codec->extradata + 4, atom.type);
481 get_buffer(pb, st->codec->extradata + 8, atom.size);
483 url_fskip(pb, atom.size);
487 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
489 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
491 if((uint64_t)atom.size > (1<<30))
494 if (st->codec->codec_id == CODEC_ID_QDM2) {
495 // pass all frma atom to codec, needed at least for QDM2
496 av_free(st->codec->extradata);
497 st->codec->extradata_size = atom.size;
498 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
500 if (st->codec->extradata) {
501 get_buffer(pb, st->codec->extradata, atom.size);
503 url_fskip(pb, atom.size);
504 } else if (atom.size > 8) { /* to read frma, esds atoms */
505 mov_read_default(c, pb, atom);
507 url_fskip(pb, atom.size);
511 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
513 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
515 if((uint64_t)atom.size > (1<<30))
518 av_free(st->codec->extradata);
520 st->codec->extradata_size = atom.size;
521 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
523 if (st->codec->extradata) {
524 get_buffer(pb, st->codec->extradata, atom.size);
526 url_fskip(pb, atom.size);
531 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
533 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
534 MOVStreamContext *sc = st->priv_data;
535 unsigned int i, entries;
537 get_byte(pb); /* version */
538 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
540 entries = get_be32(pb);
542 if(entries >= UINT_MAX/sizeof(int64_t))
545 sc->chunk_count = entries;
546 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
547 if (!sc->chunk_offsets)
549 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
550 for(i=0; i<entries; i++) {
551 sc->chunk_offsets[i] = get_be32(pb);
553 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
554 for(i=0; i<entries; i++) {
555 sc->chunk_offsets[i] = get_be64(pb);
563 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
565 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
566 MOVStreamContext *sc = st->priv_data;
567 int entries, frames_per_sample;
569 uint8_t codec_name[32];
571 /* for palette traversal */
579 unsigned char *color_table;
581 unsigned char r, g, b;
583 get_byte(pb); /* version */
584 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
586 entries = get_be32(pb);
588 while(entries--) { //Parsing Sample description table
590 MOV_atom_t a = { 0, 0, 0 };
591 offset_t start_pos = url_ftell(pb);
592 int size = get_be32(pb); /* size */
593 format = get_le32(pb); /* data format */
595 get_be32(pb); /* reserved */
596 get_be16(pb); /* reserved */
597 get_be16(pb); /* index */
599 if (st->codec->codec_tag) {
600 /* multiple fourcc, just skip for now */
601 url_fskip(pb, size - (url_ftell(pb) - start_pos));
605 st->codec->codec_tag = format;
606 id = codec_get_id(codec_movaudio_tags, format);
607 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
608 st->codec->codec_type = CODEC_TYPE_AUDIO;
609 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
610 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
611 id = codec_get_id(codec_movvideo_tags, format);
613 id = codec_get_id(codec_bmp_tags, format);
615 st->codec->codec_type = CODEC_TYPE_VIDEO;
618 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
620 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
621 st->codec->codec_type);
623 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
624 st->codec->codec_id = id;
625 get_be16(pb); /* version */
626 get_be16(pb); /* revision level */
627 get_be32(pb); /* vendor */
628 get_be32(pb); /* temporal quality */
629 get_be32(pb); /* spacial quality */
631 st->codec->width = get_be16(pb); /* width */
632 st->codec->height = get_be16(pb); /* height */
634 get_be32(pb); /* horiz resolution */
635 get_be32(pb); /* vert resolution */
636 get_be32(pb); /* data size, always 0 */
637 frames_per_sample = get_be16(pb); /* frames per samples */
639 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
641 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
642 if (codec_name[0] <= 31) {
643 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
644 st->codec->codec_name[codec_name[0]] = 0;
647 st->codec->bits_per_sample = get_be16(pb); /* depth */
648 st->codec->color_table_id = get_be16(pb); /* colortable id */
650 /* figure out the palette situation */
651 color_depth = st->codec->bits_per_sample & 0x1F;
652 color_greyscale = st->codec->bits_per_sample & 0x20;
654 /* if the depth is 2, 4, or 8 bpp, file is palettized */
655 if ((color_depth == 2) || (color_depth == 4) ||
656 (color_depth == 8)) {
658 if (color_greyscale) {
660 /* compute the greyscale palette */
661 color_count = 1 << color_depth;
663 color_dec = 256 / (color_count - 1);
664 for (j = 0; j < color_count; j++) {
665 r = g = b = color_index;
666 c->palette_control.palette[j] =
667 (r << 16) | (g << 8) | (b);
668 color_index -= color_dec;
673 } else if (st->codec->color_table_id & 0x08) {
675 /* if flag bit 3 is set, use the default palette */
676 color_count = 1 << color_depth;
677 if (color_depth == 2)
678 color_table = ff_qt_default_palette_4;
679 else if (color_depth == 4)
680 color_table = ff_qt_default_palette_16;
682 color_table = ff_qt_default_palette_256;
684 for (j = 0; j < color_count; j++) {
685 r = color_table[j * 4 + 0];
686 g = color_table[j * 4 + 1];
687 b = color_table[j * 4 + 2];
688 c->palette_control.palette[j] =
689 (r << 16) | (g << 8) | (b);
694 /* load the palette from the file */
695 color_start = get_be32(pb);
696 color_count = get_be16(pb);
697 color_end = get_be16(pb);
698 for (j = color_start; j <= color_end; j++) {
699 /* each R, G, or B component is 16 bits;
700 * only use the top 8 bits; skip alpha bytes
710 c->palette_control.palette[j] =
711 (r << 16) | (g << 8) | (b);
715 st->codec->palctrl = &c->palette_control;
716 st->codec->palctrl->palette_changed = 1;
718 st->codec->palctrl = NULL;
719 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
721 uint16_t version = get_be16(pb);
723 st->codec->codec_id = id;
724 get_be16(pb); /* revision level */
725 get_be32(pb); /* vendor */
727 st->codec->channels = get_be16(pb); /* channel count */
728 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
729 st->codec->bits_per_sample = get_be16(pb); /* sample size */
730 /* do we need to force to 16 for AMR ? */
732 /* handle specific s8 codec */
733 get_be16(pb); /* compression id = 0*/
734 get_be16(pb); /* packet size = 0 */
736 st->codec->sample_rate = ((get_be32(pb) >> 16));
738 switch (st->codec->codec_id) {
739 case CODEC_ID_PCM_S8:
740 case CODEC_ID_PCM_U8:
741 if (st->codec->bits_per_sample == 16)
742 st->codec->codec_id = CODEC_ID_PCM_S16BE;
744 case CODEC_ID_PCM_S16LE:
745 case CODEC_ID_PCM_S16BE:
746 if (st->codec->bits_per_sample == 8)
747 st->codec->codec_id = CODEC_ID_PCM_S8;
748 else if (st->codec->bits_per_sample == 24)
749 st->codec->codec_id = CODEC_ID_PCM_S24BE;
755 //Read QT version 1 fields. In version 0 theese dont exist
756 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
759 sc->samples_per_frame = get_be32(pb);
760 get_be32(pb); /* bytes per packet */
761 sc->bytes_per_frame = get_be32(pb);
762 get_be32(pb); /* bytes per sample */
763 } else if(version==2) {
764 get_be32(pb); /* sizeof struct only */
765 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
766 st->codec->channels = get_be32(pb);
767 get_be32(pb); /* always 0x7F000000 */
768 get_be32(pb); /* bits per channel if sound is uncompressed */
769 get_be32(pb); /* lcpm format specific flag */
770 get_be32(pb); /* bytes per audio packet if constant */
771 get_be32(pb); /* lpcm frames per audio packet if constant */
775 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
776 if (bits_per_sample) {
777 st->codec->bits_per_sample = bits_per_sample;
778 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
781 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
782 url_fskip(pb, size - (url_ftell(pb) - start_pos));
784 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
785 a.size = size - (url_ftell(pb) - start_pos);
787 mov_read_default(c, pb, a);
789 url_fskip(pb, a.size);
792 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
793 st->codec->sample_rate= sc->time_scale;
796 /* special codec parameters handling */
797 switch (st->codec->codec_id) {
798 #ifdef CONFIG_H261_DECODER
801 #ifdef CONFIG_H263_DECODER
804 #ifdef CONFIG_MPEG4_DECODER
807 st->codec->width= 0; /* let decoder init width/height */
808 st->codec->height= 0;
810 #ifdef CONFIG_LIBFAAD
813 #ifdef CONFIG_VORBIS_DECODER
814 case CODEC_ID_VORBIS:
816 case CODEC_ID_MP3ON4:
817 st->codec->sample_rate= 0; /* let decoder init parameters properly */
819 #ifdef CONFIG_DV_DEMUXER
820 case CODEC_ID_DVAUDIO:
821 c->dv_fctx = av_alloc_format_context();
822 c->dv_demux = dv_init_demux(c->dv_fctx);
824 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
827 sc->dv_audio_container = 1;
828 st->codec->codec_id = CODEC_ID_PCM_S16LE;
831 /* no ifdef since parameters are always those */
832 case CODEC_ID_AMR_WB:
833 st->codec->sample_rate= 16000;
834 st->codec->channels= 1; /* really needed */
836 case CODEC_ID_AMR_NB:
837 st->codec->sample_rate= 8000;
838 st->codec->channels= 1; /* really needed */
842 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
843 st->need_parsing = AVSTREAM_PARSE_FULL;
852 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
854 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
855 MOVStreamContext *sc = st->priv_data;
856 unsigned int i, entries;
858 get_byte(pb); /* version */
859 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
861 entries = get_be32(pb);
863 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
867 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
869 sc->sample_to_chunk_sz = entries;
870 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
871 if (!sc->sample_to_chunk)
873 for(i=0; i<entries; i++) {
874 sc->sample_to_chunk[i].first = get_be32(pb);
875 sc->sample_to_chunk[i].count = get_be32(pb);
876 sc->sample_to_chunk[i].id = get_be32(pb);
881 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
883 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
884 MOVStreamContext *sc = st->priv_data;
885 unsigned int i, entries;
887 get_byte(pb); /* version */
888 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
890 entries = get_be32(pb);
892 if(entries >= UINT_MAX / sizeof(int))
895 sc->keyframe_count = entries;
897 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %d\n", sc->keyframe_count);
899 sc->keyframes = av_malloc(entries * sizeof(int));
902 for(i=0; i<entries; i++) {
903 sc->keyframes[i] = get_be32(pb);
905 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%d\n", sc->keyframes[i]); */
911 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
913 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
914 MOVStreamContext *sc = st->priv_data;
915 unsigned int i, entries, sample_size;
917 get_byte(pb); /* version */
918 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
920 sample_size = get_be32(pb);
921 if (!sc->sample_size) /* do not overwrite value computed in stsd */
922 sc->sample_size = sample_size;
923 entries = get_be32(pb);
924 if(entries >= UINT_MAX / sizeof(int))
927 sc->sample_count = entries;
932 av_log(NULL, AV_LOG_DEBUG, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
934 sc->sample_sizes = av_malloc(entries * sizeof(int));
935 if (!sc->sample_sizes)
937 for(i=0; i<entries; i++) {
938 sc->sample_sizes[i] = get_be32(pb);
940 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
946 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
948 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
949 MOVStreamContext *sc = st->priv_data;
950 unsigned int i, entries;
952 int64_t total_sample_count=0;
954 get_byte(pb); /* version */
955 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
956 entries = get_be32(pb);
957 if(entries >= UINT_MAX / sizeof(Time2Sample))
960 sc->stts_count = entries;
961 sc->stts_data = av_malloc(entries * sizeof(Time2Sample));
964 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
969 for(i=0; i<entries; i++) {
973 sample_count=get_be32(pb);
974 sample_duration = get_be32(pb);
975 sc->stts_data[i].count= sample_count;
976 sc->stts_data[i].duration= sample_duration;
978 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
980 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
982 duration+=(int64_t)sample_duration*sample_count;
983 total_sample_count+=sample_count;
986 st->nb_frames= total_sample_count;
988 st->duration= duration;
992 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
994 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
995 MOVStreamContext *sc = st->priv_data;
996 unsigned int i, entries;
998 get_byte(pb); /* version */
999 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1000 entries = get_be32(pb);
1001 if(entries >= UINT_MAX / sizeof(Time2Sample))
1004 sc->ctts_count = entries;
1005 sc->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1007 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1009 for(i=0; i<entries; i++) {
1010 int count =get_be32(pb);
1011 int duration =get_be32(pb);
1014 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1016 url_fskip(pb, 8 * (entries - i - 1));
1019 sc->ctts_data[i].count = count;
1020 sc->ctts_data[i].duration= duration;
1022 sc->time_rate= ff_gcd(sc->time_rate, duration);
1027 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1030 MOVStreamContext *sc;
1032 st = av_new_stream(c->fc, c->fc->nb_streams);
1034 sc = av_mallocz(sizeof(MOVStreamContext));
1041 st->codec->codec_type = CODEC_TYPE_DATA;
1042 st->start_time = 0; /* XXX: check */
1043 c->streams[c->fc->nb_streams-1] = sc;
1045 return mov_read_default(c, pb, atom);
1048 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1050 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1051 int version = get_byte(pb);
1053 get_byte(pb); get_byte(pb);
1054 get_byte(pb); /* flags */
1056 MOV_TRACK_ENABLED 0x0001
1057 MOV_TRACK_IN_MOVIE 0x0002
1058 MOV_TRACK_IN_PREVIEW 0x0004
1059 MOV_TRACK_IN_POSTER 0x0008
1066 get_be32(pb); /* creation time */
1067 get_be32(pb); /* modification time */
1069 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1070 get_be32(pb); /* reserved */
1071 st->start_time = 0; /* check */
1072 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1073 get_be32(pb); /* reserved */
1074 get_be32(pb); /* reserved */
1076 get_be16(pb); /* layer */
1077 get_be16(pb); /* alternate group */
1078 get_be16(pb); /* volume */
1079 get_be16(pb); /* reserved */
1081 url_fskip(pb, 36); /* display matrix */
1083 /* those are fixed-point */
1084 get_be32(pb); /* track width */
1085 get_be32(pb); /* track height */
1090 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1091 /* like the files created with Adobe Premiere 5.0, for samples see */
1092 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1093 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1098 return 0; /* continue */
1099 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1100 url_fskip(pb, atom.size - 4);
1103 atom.type = get_le32(pb);
1106 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1107 url_fskip(pb, atom.size);
1110 err = mov_read_mdat(c, pb, atom);
1114 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1119 uint8_t *moov_data; /* uncompressed data */
1120 long cmov_len, moov_len;
1123 get_be32(pb); /* dcom atom */
1124 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1126 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1127 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1130 get_be32(pb); /* cmvd atom */
1131 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1133 moov_len = get_be32(pb); /* uncompressed size */
1134 cmov_len = atom.size - 6 * 4;
1136 cmov_data = av_malloc(cmov_len);
1139 moov_data = av_malloc(moov_len);
1144 get_buffer(pb, cmov_data, cmov_len);
1145 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1147 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1149 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1151 atom.size = moov_len;
1153 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1155 ret = mov_read_default(c, &ctx, atom);
1160 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1165 /* edit list atom */
1166 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1170 get_byte(pb); /* version */
1171 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1172 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1174 for(i=0; i<edit_count; i++){
1175 get_be32(pb); /* Track duration */
1176 get_be32(pb); /* Media time */
1177 get_be32(pb); /* Media rate */
1179 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1183 static const MOVParseTableEntry mov_default_parse_table[] = {
1185 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1186 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1187 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1188 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1189 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1190 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1191 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1192 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1193 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1194 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1195 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1196 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1197 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1198 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1199 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1200 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1201 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1202 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1203 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1204 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1205 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1206 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1207 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1208 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1209 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1210 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1211 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1212 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1213 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1214 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1215 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1219 static void mov_free_stream_context(MOVStreamContext *sc)
1222 av_freep(&sc->ctts_data);
1227 /* XXX: is it sufficient ? */
1228 static int mov_probe(AVProbeData *p)
1230 unsigned int offset;
1234 /* check file header */
1237 /* ignore invalid offset */
1238 if ((offset + 8) > (unsigned int)p->buf_size)
1240 tag = AV_RL32(p->buf + offset + 4);
1242 /* check for obvious tags */
1243 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1244 case MKTAG( 'm', 'o', 'o', 'v' ):
1245 case MKTAG( 'm', 'd', 'a', 't' ):
1246 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1247 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1248 return AVPROBE_SCORE_MAX;
1249 /* those are more common words, so rate then a bit less */
1250 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1251 case MKTAG( 'w', 'i', 'd', 'e' ):
1252 case MKTAG( 'f', 'r', 'e', 'e' ):
1253 case MKTAG( 'j', 'u', 'n', 'k' ):
1254 case MKTAG( 'p', 'i', 'c', 't' ):
1255 return AVPROBE_SCORE_MAX - 5;
1256 case MKTAG( 'f', 't', 'y', 'p' ):
1257 case MKTAG( 's', 'k', 'i', 'p' ):
1258 case MKTAG( 'u', 'u', 'i', 'd' ):
1259 offset = AV_RB32(p->buf+offset) + offset;
1260 /* if we only find those cause probedata is too small at least rate them */
1261 score = AVPROBE_SCORE_MAX - 50;
1264 /* unrecognized tag */
1271 static void mov_build_index(MOVContext *mov, AVStream *st)
1273 MOVStreamContext *sc = st->priv_data;
1274 offset_t current_offset;
1275 int64_t current_dts = 0;
1276 unsigned int stts_index = 0;
1277 unsigned int stsc_index = 0;
1278 unsigned int stss_index = 0;
1279 unsigned int i, j, k;
1281 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1282 unsigned int current_sample = 0;
1283 unsigned int stts_sample = 0;
1284 unsigned int keyframe, sample_size;
1285 unsigned int distance = 0;
1287 st->nb_frames = sc->sample_count;
1288 for (i = 0; i < sc->chunk_count; i++) {
1289 current_offset = sc->chunk_offsets[i];
1290 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1292 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1293 if (current_sample >= sc->sample_count) {
1294 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1297 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1300 if (stss_index + 1 < sc->keyframe_count)
1303 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1304 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1305 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1306 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1307 current_offset += sample_size;
1308 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1309 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1313 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1319 } else { /* read whole chunk */
1320 unsigned int chunk_samples, chunk_size, chunk_duration;
1322 for (i = 0; i < sc->chunk_count; i++) {
1323 current_offset = sc->chunk_offsets[i];
1324 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1326 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1327 /* get chunk size */
1328 if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1329 chunk_size = chunk_samples * sc->sample_size;
1330 else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1331 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1332 else { /* workaround to find nearest next chunk offset */
1333 chunk_size = INT_MAX;
1334 for (j = 0; j < mov->total_streams; j++) {
1335 MOVStreamContext *msc = mov->streams[j];
1337 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1338 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1339 chunk_size = msc->chunk_offsets[k] - current_offset;
1340 msc->next_chunk = k;
1345 /* check for last chunk */
1346 if (chunk_size == INT_MAX)
1347 for (j = 0; j < mov->mdat_count; j++) {
1348 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1349 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1350 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1351 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1353 assert(chunk_size != INT_MAX);
1354 for (j = 0; j < mov->total_streams; j++) {
1355 mov->streams[j]->next_chunk = 0;
1358 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1359 /* get chunk duration */
1361 while (chunk_samples > 0) {
1362 if (chunk_samples < sc->stts_data[stts_index].count) {
1363 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1364 sc->stts_data[stts_index].count -= chunk_samples;
1367 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1368 chunk_samples -= sc->stts_data[stts_index].count;
1369 if (stts_index + 1 < sc->stts_count) {
1374 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1375 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1376 assert(chunk_duration % sc->time_rate == 0);
1377 current_dts += chunk_duration / sc->time_rate;
1381 /* adjust sample count to avindex entries */
1382 sc->sample_count = st->nb_index_entries;
1385 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1387 MOVContext *mov = s->priv_data;
1388 ByteIOContext *pb = &s->pb;
1390 MOV_atom_t atom = { 0, 0, 0 };
1393 mov->parse_table = mov_default_parse_table;
1395 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1396 atom.size = url_fsize(pb);
1398 atom.size = INT64_MAX;
1400 /* check MOV header */
1401 err = mov_read_default(mov, pb, atom);
1402 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1403 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1404 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1407 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1409 /* some cleanup : make sure we are on the mdat atom */
1410 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1411 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1413 mov->total_streams = s->nb_streams;
1415 for(i=0; i<mov->total_streams; i++) {
1416 MOVStreamContext *sc = mov->streams[i];
1417 AVStream *st = s->streams[i];
1419 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1420 (!sc->sample_size && !sc->sample_count)){
1421 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1422 sc->sample_count = 0; //ignore track
1428 sc->time_scale= mov->time_scale;
1429 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1431 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1432 st->codec->frame_size = sc->stts_data[0].duration;
1434 if(st->duration != AV_NOPTS_VALUE){
1435 assert(st->duration % sc->time_rate == 0);
1436 st->duration /= sc->time_rate;
1439 mov_build_index(mov, st);
1442 for(i=0; i<mov->total_streams; i++) {
1443 /* dont need those anymore */
1444 av_freep(&mov->streams[i]->chunk_offsets);
1445 av_freep(&mov->streams[i]->sample_to_chunk);
1446 av_freep(&mov->streams[i]->sample_sizes);
1447 av_freep(&mov->streams[i]->keyframes);
1448 av_freep(&mov->streams[i]->stts_data);
1450 av_freep(&mov->mdat_list);
1454 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1456 MOVContext *mov = s->priv_data;
1457 MOVStreamContext *sc = 0;
1458 AVIndexEntry *sample = 0;
1459 int64_t best_dts = INT64_MAX;
1462 for (i = 0; i < mov->total_streams; i++) {
1463 MOVStreamContext *msc = mov->streams[i];
1465 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1466 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1467 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1469 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1470 if (dts < best_dts) {
1471 sample = current_sample;
1479 /* must be done just before reading, to avoid infinite loop on sample */
1480 sc->current_sample++;
1481 if (sample->pos >= url_fsize(&s->pb)) {
1482 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1485 #ifdef CONFIG_DV_DEMUXER
1486 if (sc->dv_audio_container) {
1487 dv_get_packet(mov->dv_demux, pkt);
1488 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1491 url_fseek(&s->pb, sample->pos, SEEK_SET);
1492 av_get_packet(&s->pb, pkt, sample->size);
1493 #ifdef CONFIG_DV_DEMUXER
1494 if (mov->dv_demux) {
1495 void *pkt_destruct_func = pkt->destruct;
1496 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1497 pkt->destruct = pkt_destruct_func;
1501 pkt->stream_index = sc->ffindex;
1502 pkt->dts = sample->timestamp;
1503 if (sc->ctts_data) {
1504 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1505 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1506 /* update ctts context */
1507 sc->sample_to_ctime_sample++;
1508 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1509 sc->sample_to_ctime_index++;
1510 sc->sample_to_ctime_sample = 0;
1513 pkt->pts = pkt->dts;
1515 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1516 pkt->pos = sample->pos;
1517 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);
1521 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1523 MOVStreamContext *sc = st->priv_data;
1524 int sample, time_sample;
1527 sample = av_index_search_timestamp(st, timestamp, flags);
1528 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1529 if (sample < 0) /* not sure what to do */
1531 sc->current_sample = sample;
1532 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1533 /* adjust ctts index */
1534 if (sc->ctts_data) {
1536 for (i = 0; i < sc->ctts_count; i++) {
1537 time_sample += sc->ctts_data[i].count;
1538 if (time_sample >= sc->current_sample) {
1539 sc->sample_to_ctime_index = i;
1540 sc->sample_to_ctime_sample = time_sample - sc->current_sample;
1548 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1551 int64_t seek_timestamp, timestamp;
1555 if (stream_index >= s->nb_streams)
1558 st = s->streams[stream_index];
1559 sample = mov_seek_stream(st, sample_time, flags);
1563 /* adjust seek timestamp to found sample timestamp */
1564 seek_timestamp = st->index_entries[sample].timestamp;
1566 for (i = 0; i < s->nb_streams; i++) {
1568 if (stream_index == i || st->discard == AVDISCARD_ALL)
1571 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1572 mov_seek_stream(st, timestamp, flags);
1577 static int mov_read_close(AVFormatContext *s)
1580 MOVContext *mov = s->priv_data;
1581 for(i=0; i<mov->total_streams; i++)
1582 mov_free_stream_context(mov->streams[i]);
1584 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1585 av_freep(&mov->dv_fctx->streams[i]->codec);
1586 av_freep(&mov->dv_fctx->streams[i]);
1588 av_freep(&mov->dv_fctx);
1589 av_freep(&mov->dv_demux);
1594 AVInputFormat mov_demuxer = {
1595 "mov,mp4,m4a,3gp,3g2,mj2",
1596 "QuickTime/MPEG4/Motion JPEG 2000 format",