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;
184 a.size = FFMIN(a.size, atom.size - total_size);
186 for (i = 0; c->parse_table[i].type != 0L
187 && c->parse_table[i].type != a.type; i++)
190 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
191 url_fskip(pb, a.size);
193 offset_t start_pos = url_ftell(pb);
195 err = (c->parse_table[i].func)(c, pb, a);
196 if (c->found_moov && c->found_mdat)
198 left = a.size - url_ftell(pb) + start_pos;
199 if (left > 0) /* skip garbage at atom end */
204 total_size += a.size;
207 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
208 url_fskip(pb, atom.size - total_size);
214 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
216 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
220 get_byte(pb); /* version */
221 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
224 ctype = get_le32(pb);
225 type = get_le32(pb); /* component subtype */
227 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
228 dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
231 if(type == MKTAG('v', 'i', 'd', 'e'))
232 st->codec->codec_type = CODEC_TYPE_VIDEO;
233 else if(type == MKTAG('s', 'o', 'u', 'n'))
234 st->codec->codec_type = CODEC_TYPE_AUDIO;
235 else if(type == MKTAG('m', '1', 'a', ' '))
236 st->codec->codec_id = CODEC_ID_MP2;
237 else if(type == MKTAG('s', 'u', 'b', 'p')) {
238 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
239 st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
241 get_be32(pb); /* component manufacture */
242 get_be32(pb); /* component flags */
243 get_be32(pb); /* component flags mask */
246 return 0; /* nothing left to read */
248 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
252 static int mp4_read_descr_len(ByteIOContext *pb)
257 int c = get_byte(pb);
258 len = (len << 7) | (c & 0x7f);
265 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
269 len = mp4_read_descr_len(pb);
270 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
274 #define MP4ESDescrTag 0x03
275 #define MP4DecConfigDescrTag 0x04
276 #define MP4DecSpecificDescrTag 0x05
278 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
280 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
283 get_be32(pb); /* version + flags */
284 len = mp4_read_descr(c, pb, &tag);
285 if (tag == MP4ESDescrTag) {
286 get_be16(pb); /* ID */
287 get_byte(pb); /* priority */
289 get_be16(pb); /* ID */
291 len = mp4_read_descr(c, pb, &tag);
292 if (tag == MP4DecConfigDescrTag) {
293 int object_type_id = get_byte(pb);
294 get_byte(pb); /* stream type */
295 get_be24(pb); /* buffer size db */
296 get_be32(pb); /* max bitrate */
297 get_be32(pb); /* avg bitrate */
299 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
300 dprintf(c->fc, "esds object type id %d\n", object_type_id);
301 len = mp4_read_descr(c, pb, &tag);
302 if (tag == MP4DecSpecificDescrTag) {
303 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
304 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
305 if (st->codec->extradata) {
306 get_buffer(pb, st->codec->extradata, len);
307 st->codec->extradata_size = len;
309 if ((*st->codec->extradata >> 3) == 29) {
310 st->codec->codec_id = CODEC_ID_MP3ON4;
318 /* this atom contains actual media data */
319 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
321 if(atom.size == 0) /* wrong one (MP4) */
323 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
324 c->mdat_list[c->mdat_count].offset = atom.offset;
325 c->mdat_list[c->mdat_count].size = atom.size;
328 c->mdat_offset = atom.offset;
330 return 1; /* found both, just go */
331 url_fskip(pb, atom.size);
332 return 0; /* now go for moov */
335 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
337 uint32_t type = get_le32(pb);
339 if (type != MKTAG('q','t',' ',' '))
341 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
342 get_be32(pb); /* minor version */
343 url_fskip(pb, atom.size - 8);
347 /* this atom should contain all header atoms */
348 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
350 if (mov_read_default(c, pb, atom) < 0)
352 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
353 /* so we don't parse the whole file if over a network */
356 return 1; /* found both, just go */
357 return 0; /* now go for mdat */
361 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
363 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
364 MOVStreamContext *sc = st->priv_data;
365 int version = get_byte(pb);
369 return 1; /* unsupported */
371 get_byte(pb); get_byte(pb);
372 get_byte(pb); /* flags */
378 get_be32(pb); /* creation time */
379 get_be32(pb); /* modification time */
382 sc->time_scale = get_be32(pb);
383 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
385 lang = get_be16(pb); /* language */
386 ff_mov_lang_to_iso639(lang, st->language);
387 get_be16(pb); /* quality */
392 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
394 int version = get_byte(pb); /* version */
395 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
401 get_be32(pb); /* creation time */
402 get_be32(pb); /* modification time */
404 c->time_scale = get_be32(pb); /* time scale */
406 dprintf(c->fc, "time scale = %i\n", c->time_scale);
408 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
409 get_be32(pb); /* preferred scale */
411 get_be16(pb); /* preferred volume */
413 url_fskip(pb, 10); /* reserved */
415 url_fskip(pb, 36); /* display matrix */
417 get_be32(pb); /* preview time */
418 get_be32(pb); /* preview duration */
419 get_be32(pb); /* poster time */
420 get_be32(pb); /* selection time */
421 get_be32(pb); /* selection duration */
422 get_be32(pb); /* current time */
423 get_be32(pb); /* next track ID */
428 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
430 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
432 if((uint64_t)atom.size > (1<<30))
435 // currently SVQ3 decoder expect full STSD header - so let's fake it
436 // this should be fixed and just SMI header should be passed
437 av_free(st->codec->extradata);
438 st->codec->extradata_size = 0x5a + atom.size;
439 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
441 if (st->codec->extradata) {
442 memcpy(st->codec->extradata, "SVQ3", 4); // fake
443 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
444 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
446 url_fskip(pb, atom.size);
451 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
453 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
454 int little_endian = get_be16(pb);
457 switch (st->codec->codec_id) {
458 case CODEC_ID_PCM_S24BE:
459 st->codec->codec_id = CODEC_ID_PCM_S24LE;
461 case CODEC_ID_PCM_S32BE:
462 st->codec->codec_id = CODEC_ID_PCM_S32LE;
471 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
472 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
474 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
475 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
477 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
479 buf= av_realloc(st->codec->extradata, size);
482 st->codec->extradata= buf;
483 buf+= st->codec->extradata_size;
484 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
485 AV_WB32( buf , atom.size + 8);
486 AV_WL32( buf + 4, atom.type);
487 get_buffer(pb, buf + 8, atom.size);
491 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
493 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
495 if((uint64_t)atom.size > (1<<30))
498 if (st->codec->codec_id == CODEC_ID_QDM2) {
499 // pass all frma atom to codec, needed at least for QDM2
500 av_free(st->codec->extradata);
501 st->codec->extradata_size = atom.size;
502 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
504 if (st->codec->extradata) {
505 get_buffer(pb, st->codec->extradata, atom.size);
507 url_fskip(pb, atom.size);
508 } else if (atom.size > 8) { /* to read frma, esds atoms */
509 if (mov_read_default(c, pb, atom) < 0)
512 url_fskip(pb, atom.size);
516 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
518 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
520 if((uint64_t)atom.size > (1<<30))
523 av_free(st->codec->extradata);
525 st->codec->extradata_size = atom.size;
526 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
528 if (st->codec->extradata) {
529 get_buffer(pb, st->codec->extradata, atom.size);
531 url_fskip(pb, atom.size);
536 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
538 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
539 MOVStreamContext *sc = st->priv_data;
540 unsigned int i, entries;
542 get_byte(pb); /* version */
543 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
545 entries = get_be32(pb);
547 if(entries >= UINT_MAX/sizeof(int64_t))
550 sc->chunk_count = entries;
551 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
552 if (!sc->chunk_offsets)
554 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
555 for(i=0; i<entries; i++) {
556 sc->chunk_offsets[i] = get_be32(pb);
558 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
559 for(i=0; i<entries; i++) {
560 sc->chunk_offsets[i] = get_be64(pb);
568 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
570 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
571 MOVStreamContext *sc = st->priv_data;
572 int entries, frames_per_sample;
574 uint8_t codec_name[32];
576 /* for palette traversal */
577 unsigned int color_depth;
578 unsigned int color_start;
579 unsigned int color_count;
580 unsigned int color_end;
584 const uint8_t *color_table;
586 unsigned char r, g, b;
588 get_byte(pb); /* version */
589 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
591 entries = get_be32(pb);
593 while(entries--) { //Parsing Sample description table
595 MOV_atom_t a = { 0, 0, 0 };
596 offset_t start_pos = url_ftell(pb);
597 int size = get_be32(pb); /* size */
598 format = get_le32(pb); /* data format */
600 get_be32(pb); /* reserved */
601 get_be16(pb); /* reserved */
602 get_be16(pb); /* index */
604 if (st->codec->codec_tag) {
605 /* multiple fourcc, just skip for now */
606 url_fskip(pb, size - (url_ftell(pb) - start_pos));
610 st->codec->codec_tag = format;
611 id = codec_get_id(codec_movaudio_tags, format);
612 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
613 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
615 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
616 st->codec->codec_type = CODEC_TYPE_AUDIO;
617 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
618 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
619 id = codec_get_id(codec_movvideo_tags, format);
621 id = codec_get_id(codec_bmp_tags, format);
623 st->codec->codec_type = CODEC_TYPE_VIDEO;
626 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
628 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
629 st->codec->codec_type);
631 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
632 st->codec->codec_id = id;
633 get_be16(pb); /* version */
634 get_be16(pb); /* revision level */
635 get_be32(pb); /* vendor */
636 get_be32(pb); /* temporal quality */
637 get_be32(pb); /* spatial quality */
639 st->codec->width = get_be16(pb); /* width */
640 st->codec->height = get_be16(pb); /* height */
642 get_be32(pb); /* horiz resolution */
643 get_be32(pb); /* vert resolution */
644 get_be32(pb); /* data size, always 0 */
645 frames_per_sample = get_be16(pb); /* frames per samples */
647 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
649 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
650 if (codec_name[0] <= 31) {
651 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
652 st->codec->codec_name[codec_name[0]] = 0;
655 st->codec->bits_per_sample = get_be16(pb); /* depth */
656 st->codec->color_table_id = get_be16(pb); /* colortable id */
658 /* figure out the palette situation */
659 color_depth = st->codec->bits_per_sample & 0x1F;
660 color_greyscale = st->codec->bits_per_sample & 0x20;
662 /* if the depth is 2, 4, or 8 bpp, file is palettized */
663 if ((color_depth == 2) || (color_depth == 4) ||
664 (color_depth == 8)) {
665 if (color_greyscale) {
666 /* compute the greyscale palette */
667 color_count = 1 << color_depth;
669 color_dec = 256 / (color_count - 1);
670 for (j = 0; j < color_count; j++) {
671 r = g = b = color_index;
672 c->palette_control.palette[j] =
673 (r << 16) | (g << 8) | (b);
674 color_index -= color_dec;
678 } else if (st->codec->color_table_id & 0x08) {
679 /* if flag bit 3 is set, use the default palette */
680 color_count = 1 << color_depth;
681 if (color_depth == 2)
682 color_table = ff_qt_default_palette_4;
683 else if (color_depth == 4)
684 color_table = ff_qt_default_palette_16;
686 color_table = ff_qt_default_palette_256;
688 for (j = 0; j < color_count; j++) {
689 r = color_table[j * 4 + 0];
690 g = color_table[j * 4 + 1];
691 b = color_table[j * 4 + 2];
692 c->palette_control.palette[j] =
693 (r << 16) | (g << 8) | (b);
696 /* load the palette from the file */
697 color_start = get_be32(pb);
698 color_count = get_be16(pb);
699 color_end = get_be16(pb);
700 if ((color_start <= 255) &&
701 (color_end <= 255)) {
702 for (j = color_start; j <= color_end; j++) {
703 /* each R, G, or B component is 16 bits;
704 * only use the top 8 bits; skip alpha bytes
714 c->palette_control.palette[j] =
715 (r << 16) | (g << 8) | (b);
719 st->codec->palctrl = &c->palette_control;
720 st->codec->palctrl->palette_changed = 1;
722 st->codec->palctrl = NULL;
723 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
725 uint16_t version = get_be16(pb);
727 st->codec->codec_id = id;
728 get_be16(pb); /* revision level */
729 get_be32(pb); /* vendor */
731 st->codec->channels = get_be16(pb); /* channel count */
732 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
733 st->codec->bits_per_sample = get_be16(pb); /* sample size */
734 /* do we need to force to 16 for AMR ? */
736 /* handle specific s8 codec */
737 get_be16(pb); /* compression id = 0*/
738 get_be16(pb); /* packet size = 0 */
740 st->codec->sample_rate = ((get_be32(pb) >> 16));
742 switch (st->codec->codec_id) {
743 case CODEC_ID_PCM_S8:
744 case CODEC_ID_PCM_U8:
745 if (st->codec->bits_per_sample == 16)
746 st->codec->codec_id = CODEC_ID_PCM_S16BE;
748 case CODEC_ID_PCM_S16LE:
749 case CODEC_ID_PCM_S16BE:
750 if (st->codec->bits_per_sample == 8)
751 st->codec->codec_id = CODEC_ID_PCM_S8;
752 else if (st->codec->bits_per_sample == 24)
753 st->codec->codec_id = CODEC_ID_PCM_S24BE;
759 //Read QT version 1 fields. In version 0 these do not exist.
760 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
763 sc->samples_per_frame = get_be32(pb);
764 get_be32(pb); /* bytes per packet */
765 sc->bytes_per_frame = get_be32(pb);
766 get_be32(pb); /* bytes per sample */
767 } else if(version==2) {
768 get_be32(pb); /* sizeof struct only */
769 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
770 st->codec->channels = get_be32(pb);
771 get_be32(pb); /* always 0x7F000000 */
772 get_be32(pb); /* bits per channel if sound is uncompressed */
773 get_be32(pb); /* lcpm format specific flag */
774 get_be32(pb); /* bytes per audio packet if constant */
775 get_be32(pb); /* lpcm frames per audio packet if constant */
779 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
780 if (bits_per_sample) {
781 st->codec->bits_per_sample = bits_per_sample;
782 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
785 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
786 url_fskip(pb, size - (url_ftell(pb) - start_pos));
788 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
789 a.size = size - (url_ftell(pb) - start_pos);
791 if (mov_read_default(c, pb, a) < 0)
793 } else if (a.size > 0)
794 url_fskip(pb, a.size);
797 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
798 st->codec->sample_rate= sc->time_scale;
801 /* special codec parameters handling */
802 switch (st->codec->codec_id) {
803 #ifdef CONFIG_H261_DECODER
806 #ifdef CONFIG_H263_DECODER
809 #ifdef CONFIG_MPEG4_DECODER
812 st->codec->width= 0; /* let decoder init width/height */
813 st->codec->height= 0;
815 #ifdef CONFIG_LIBFAAD
818 #ifdef CONFIG_VORBIS_DECODER
819 case CODEC_ID_VORBIS:
821 case CODEC_ID_MP3ON4:
822 st->codec->sample_rate= 0; /* let decoder init parameters properly */
824 #ifdef CONFIG_DV_DEMUXER
825 case CODEC_ID_DVAUDIO:
826 c->dv_fctx = av_alloc_format_context();
827 c->dv_demux = dv_init_demux(c->dv_fctx);
829 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
832 sc->dv_audio_container = 1;
833 st->codec->codec_id = CODEC_ID_PCM_S16LE;
836 /* no ifdef since parameters are always those */
837 case CODEC_ID_AMR_WB:
838 st->codec->sample_rate= 16000;
839 st->codec->channels= 1; /* really needed */
841 case CODEC_ID_AMR_NB:
842 st->codec->sample_rate= 8000;
843 st->codec->channels= 1; /* really needed */
847 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
848 st->need_parsing = AVSTREAM_PARSE_FULL;
850 case CODEC_ID_ADPCM_MS:
851 case CODEC_ID_ADPCM_IMA_WAV:
852 st->codec->block_align = sc->bytes_per_frame;
861 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
863 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
864 MOVStreamContext *sc = st->priv_data;
865 unsigned int i, entries;
867 get_byte(pb); /* version */
868 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
870 entries = get_be32(pb);
872 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
875 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
877 sc->sample_to_chunk_sz = entries;
878 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
879 if (!sc->sample_to_chunk)
881 for(i=0; i<entries; i++) {
882 sc->sample_to_chunk[i].first = get_be32(pb);
883 sc->sample_to_chunk[i].count = get_be32(pb);
884 sc->sample_to_chunk[i].id = get_be32(pb);
889 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
891 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
892 MOVStreamContext *sc = st->priv_data;
893 unsigned int i, entries;
895 get_byte(pb); /* version */
896 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
898 entries = get_be32(pb);
900 if(entries >= UINT_MAX / sizeof(int))
903 sc->keyframe_count = entries;
905 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
907 sc->keyframes = av_malloc(entries * sizeof(int));
910 for(i=0; i<entries; i++) {
911 sc->keyframes[i] = get_be32(pb);
912 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
917 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
919 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
920 MOVStreamContext *sc = st->priv_data;
921 unsigned int i, entries, sample_size;
923 get_byte(pb); /* version */
924 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
926 sample_size = get_be32(pb);
927 if (!sc->sample_size) /* do not overwrite value computed in stsd */
928 sc->sample_size = sample_size;
929 entries = get_be32(pb);
930 if(entries >= UINT_MAX / sizeof(int))
933 sc->sample_count = entries;
937 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
939 sc->sample_sizes = av_malloc(entries * sizeof(int));
940 if (!sc->sample_sizes)
942 for(i=0; i<entries; i++) {
943 sc->sample_sizes[i] = get_be32(pb);
944 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
949 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
951 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
952 MOVStreamContext *sc = st->priv_data;
953 unsigned int i, entries;
955 int64_t total_sample_count=0;
957 get_byte(pb); /* version */
958 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
959 entries = get_be32(pb);
960 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
963 sc->stts_count = entries;
964 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
967 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
971 for(i=0; i<entries; i++) {
975 sample_count=get_be32(pb);
976 sample_duration = get_be32(pb);
977 sc->stts_data[i].count= sample_count;
978 sc->stts_data[i].duration= sample_duration;
980 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
982 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
984 duration+=(int64_t)sample_duration*sample_count;
985 total_sample_count+=sample_count;
988 st->nb_frames= total_sample_count;
990 st->duration= duration;
994 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
996 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
997 MOVStreamContext *sc = st->priv_data;
998 unsigned int i, entries;
1000 get_byte(pb); /* version */
1001 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1002 entries = get_be32(pb);
1003 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1006 sc->ctts_count = entries;
1007 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1010 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1012 for(i=0; i<entries; i++) {
1013 int count =get_be32(pb);
1014 int duration =get_be32(pb);
1017 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1019 url_fskip(pb, 8 * (entries - i - 1));
1022 sc->ctts_data[i].count = count;
1023 sc->ctts_data[i].duration= duration;
1025 sc->time_rate= ff_gcd(sc->time_rate, duration);
1030 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1033 MOVStreamContext *sc;
1035 st = av_new_stream(c->fc, c->fc->nb_streams);
1037 sc = av_mallocz(sizeof(MOVStreamContext));
1044 st->codec->codec_type = CODEC_TYPE_DATA;
1045 st->start_time = 0; /* XXX: check */
1046 c->streams[c->fc->nb_streams-1] = sc;
1048 return mov_read_default(c, pb, atom);
1051 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1053 uint16_t str_size = get_be16(pb); /* string length */;
1055 get_be16(pb); /* skip language */
1056 get_buffer(pb, str, FFMIN(size, str_size));
1059 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1061 uint64_t end = url_ftell(pb) + atom.size;
1063 while (url_ftell(pb) + 8 < end) {
1064 uint32_t tag_size = get_be32(pb);
1065 uint32_t tag = get_le32(pb);
1066 uint64_t next = url_ftell(pb) + tag_size - 8;
1068 if (next > end) // stop if tag_size is wrong
1072 case MKTAG(0xa9,'n','a','m'):
1073 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1075 case MKTAG(0xa9,'w','r','t'):
1076 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1078 case MKTAG(0xa9,'c','p','y'):
1079 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1081 case MKTAG(0xa9,'i','n','f'):
1082 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1088 url_fseek(pb, next, SEEK_SET);
1094 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1096 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1097 int version = get_byte(pb);
1099 get_byte(pb); get_byte(pb);
1100 get_byte(pb); /* flags */
1102 MOV_TRACK_ENABLED 0x0001
1103 MOV_TRACK_IN_MOVIE 0x0002
1104 MOV_TRACK_IN_PREVIEW 0x0004
1105 MOV_TRACK_IN_POSTER 0x0008
1112 get_be32(pb); /* creation time */
1113 get_be32(pb); /* modification time */
1115 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1116 get_be32(pb); /* reserved */
1117 st->start_time = 0; /* check */
1118 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1119 get_be32(pb); /* reserved */
1120 get_be32(pb); /* reserved */
1122 get_be16(pb); /* layer */
1123 get_be16(pb); /* alternate group */
1124 get_be16(pb); /* volume */
1125 get_be16(pb); /* reserved */
1127 url_fskip(pb, 36); /* display matrix */
1129 /* those are fixed-point */
1130 get_be32(pb); /* track width */
1131 get_be32(pb); /* track height */
1136 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1137 /* like the files created with Adobe Premiere 5.0, for samples see */
1138 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1139 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1144 return 0; /* continue */
1145 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1146 url_fskip(pb, atom.size - 4);
1149 atom.type = get_le32(pb);
1152 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1153 url_fskip(pb, atom.size);
1156 err = mov_read_mdat(c, pb, atom);
1160 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1165 uint8_t *moov_data; /* uncompressed data */
1166 long cmov_len, moov_len;
1169 get_be32(pb); /* dcom atom */
1170 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1172 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1173 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1176 get_be32(pb); /* cmvd atom */
1177 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1179 moov_len = get_be32(pb); /* uncompressed size */
1180 cmov_len = atom.size - 6 * 4;
1182 cmov_data = av_malloc(cmov_len);
1185 moov_data = av_malloc(moov_len);
1190 get_buffer(pb, cmov_data, cmov_len);
1191 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1193 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1195 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1197 atom.size = moov_len;
1199 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1201 ret = mov_read_default(c, &ctx, atom);
1206 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1211 /* edit list atom */
1212 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1216 get_byte(pb); /* version */
1217 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1218 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1220 for(i=0; i<edit_count; i++){
1221 get_be32(pb); /* Track duration */
1222 get_be32(pb); /* Media time */
1223 get_be32(pb); /* Media rate */
1225 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1229 static const MOVParseTableEntry mov_default_parse_table[] = {
1231 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1232 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1233 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1234 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1235 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1236 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1237 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1238 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1239 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1240 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1241 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1242 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1243 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1244 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1245 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1246 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1247 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1248 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1249 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1250 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1251 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1252 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1253 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1254 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1255 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1256 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1257 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1258 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1259 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1260 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1261 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1262 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1266 /* XXX: is it sufficient ? */
1267 static int mov_probe(AVProbeData *p)
1269 unsigned int offset;
1273 /* check file header */
1276 /* ignore invalid offset */
1277 if ((offset + 8) > (unsigned int)p->buf_size)
1279 tag = AV_RL32(p->buf + offset + 4);
1281 /* check for obvious tags */
1282 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1283 case MKTAG( 'm', 'o', 'o', 'v' ):
1284 case MKTAG( 'm', 'd', 'a', 't' ):
1285 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1286 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1287 return AVPROBE_SCORE_MAX;
1288 /* those are more common words, so rate then a bit less */
1289 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1290 case MKTAG( 'w', 'i', 'd', 'e' ):
1291 case MKTAG( 'f', 'r', 'e', 'e' ):
1292 case MKTAG( 'j', 'u', 'n', 'k' ):
1293 case MKTAG( 'p', 'i', 'c', 't' ):
1294 return AVPROBE_SCORE_MAX - 5;
1295 case MKTAG( 'f', 't', 'y', 'p' ):
1296 case MKTAG( 's', 'k', 'i', 'p' ):
1297 case MKTAG( 'u', 'u', 'i', 'd' ):
1298 offset = AV_RB32(p->buf+offset) + offset;
1299 /* if we only find those cause probedata is too small at least rate them */
1300 score = AVPROBE_SCORE_MAX - 50;
1303 /* unrecognized tag */
1310 static void mov_build_index(MOVContext *mov, AVStream *st)
1312 MOVStreamContext *sc = st->priv_data;
1313 offset_t current_offset;
1314 int64_t current_dts = 0;
1315 unsigned int stts_index = 0;
1316 unsigned int stsc_index = 0;
1317 unsigned int stss_index = 0;
1318 unsigned int i, j, k;
1320 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1321 unsigned int current_sample = 0;
1322 unsigned int stts_sample = 0;
1323 unsigned int keyframe, sample_size;
1324 unsigned int distance = 0;
1326 st->nb_frames = sc->sample_count;
1327 for (i = 0; i < sc->chunk_count; i++) {
1328 current_offset = sc->chunk_offsets[i];
1329 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1331 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1332 if (current_sample >= sc->sample_count) {
1333 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1336 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1339 if (stss_index + 1 < sc->keyframe_count)
1342 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1343 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1344 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1345 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1346 current_offset += sample_size;
1347 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1348 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1352 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1358 } else { /* read whole chunk */
1359 unsigned int chunk_samples, chunk_size, chunk_duration;
1360 for (i = 0; i < sc->chunk_count; i++) {
1361 current_offset = sc->chunk_offsets[i];
1362 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1364 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1365 /* get chunk size */
1366 if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1367 chunk_size = chunk_samples * sc->sample_size;
1368 else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1369 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1370 else { /* workaround to find nearest next chunk offset */
1371 chunk_size = INT_MAX;
1372 for (j = 0; j < mov->total_streams; j++) {
1373 MOVStreamContext *msc = mov->streams[j];
1374 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1375 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1376 chunk_size = msc->chunk_offsets[k] - current_offset;
1377 msc->next_chunk = k;
1382 /* check for last chunk */
1383 if (chunk_size == INT_MAX)
1384 for (j = 0; j < mov->mdat_count; j++) {
1385 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1386 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1387 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1388 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1390 assert(chunk_size != INT_MAX);
1391 for (j = 0; j < mov->total_streams; j++) {
1392 mov->streams[j]->next_chunk = 0;
1395 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1396 /* get chunk duration */
1398 while (chunk_samples > 0) {
1399 if (chunk_samples < sc->stts_data[stts_index].count) {
1400 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1401 sc->stts_data[stts_index].count -= chunk_samples;
1404 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1405 chunk_samples -= sc->stts_data[stts_index].count;
1406 if (stts_index + 1 < sc->stts_count) {
1411 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1412 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1413 assert(chunk_duration % sc->time_rate == 0);
1414 current_dts += chunk_duration / sc->time_rate;
1418 /* adjust sample count to avindex entries */
1419 sc->sample_count = st->nb_index_entries;
1422 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1424 MOVContext *mov = s->priv_data;
1425 ByteIOContext *pb = s->pb;
1427 MOV_atom_t atom = { 0, 0, 0 };
1430 mov->parse_table = mov_default_parse_table;
1432 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1433 atom.size = url_fsize(pb);
1435 atom.size = INT64_MAX;
1437 /* check MOV header */
1438 err = mov_read_default(mov, pb, atom);
1439 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1440 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1441 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1444 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1446 /* some cleanup : make sure we are on the mdat atom */
1447 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1448 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1450 mov->total_streams = s->nb_streams;
1452 for(i=0; i<mov->total_streams; i++) {
1453 MOVStreamContext *sc = mov->streams[i];
1454 AVStream *st = s->streams[i];
1456 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1457 (!sc->sample_size && !sc->sample_count)){
1458 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1459 sc->sample_count = 0; //ignore track
1465 sc->time_scale= mov->time_scale;
1466 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1468 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1469 st->codec->frame_size = sc->stts_data[0].duration;
1471 if(st->duration != AV_NOPTS_VALUE){
1472 assert(st->duration % sc->time_rate == 0);
1473 st->duration /= sc->time_rate;
1476 mov_build_index(mov, st);
1479 for(i=0; i<mov->total_streams; i++) {
1480 /* Do not need those anymore. */
1481 av_freep(&mov->streams[i]->chunk_offsets);
1482 av_freep(&mov->streams[i]->sample_to_chunk);
1483 av_freep(&mov->streams[i]->sample_sizes);
1484 av_freep(&mov->streams[i]->keyframes);
1485 av_freep(&mov->streams[i]->stts_data);
1487 av_freep(&mov->mdat_list);
1491 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1493 MOVContext *mov = s->priv_data;
1494 MOVStreamContext *sc = 0;
1495 AVIndexEntry *sample = 0;
1496 int64_t best_dts = INT64_MAX;
1499 for (i = 0; i < mov->total_streams; i++) {
1500 MOVStreamContext *msc = mov->streams[i];
1501 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1502 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1503 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1504 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1505 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1506 (!url_is_streamed(s->pb) &&
1507 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1508 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1509 sample = current_sample;
1517 /* must be done just before reading, to avoid infinite loop on sample */
1518 sc->current_sample++;
1519 if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1520 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1523 #ifdef CONFIG_DV_DEMUXER
1524 if (sc->dv_audio_container) {
1525 dv_get_packet(mov->dv_demux, pkt);
1526 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1529 av_get_packet(s->pb, pkt, sample->size);
1530 #ifdef CONFIG_DV_DEMUXER
1531 if (mov->dv_demux) {
1532 void *pkt_destruct_func = pkt->destruct;
1533 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1534 pkt->destruct = pkt_destruct_func;
1538 pkt->stream_index = sc->ffindex;
1539 pkt->dts = sample->timestamp;
1540 if (sc->ctts_data) {
1541 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1542 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1543 /* update ctts context */
1544 sc->sample_to_ctime_sample++;
1545 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1546 sc->sample_to_ctime_index++;
1547 sc->sample_to_ctime_sample = 0;
1550 pkt->pts = pkt->dts;
1552 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1553 pkt->pos = sample->pos;
1554 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);
1558 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1560 MOVStreamContext *sc = st->priv_data;
1561 int sample, time_sample;
1564 sample = av_index_search_timestamp(st, timestamp, flags);
1565 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1566 if (sample < 0) /* not sure what to do */
1568 sc->current_sample = sample;
1569 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1570 /* adjust ctts index */
1571 if (sc->ctts_data) {
1573 for (i = 0; i < sc->ctts_count; i++) {
1574 int next = time_sample + sc->ctts_data[i].count;
1575 if (next > sc->current_sample) {
1576 sc->sample_to_ctime_index = i;
1577 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1586 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1589 int64_t seek_timestamp, timestamp;
1593 if (stream_index >= s->nb_streams)
1596 st = s->streams[stream_index];
1597 sample = mov_seek_stream(st, sample_time, flags);
1601 /* adjust seek timestamp to found sample timestamp */
1602 seek_timestamp = st->index_entries[sample].timestamp;
1604 for (i = 0; i < s->nb_streams; i++) {
1606 if (stream_index == i || st->discard == AVDISCARD_ALL)
1609 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1610 mov_seek_stream(st, timestamp, flags);
1615 static int mov_read_close(AVFormatContext *s)
1618 MOVContext *mov = s->priv_data;
1619 for(i=0; i<mov->total_streams; i++) {
1620 av_freep(&mov->streams[i]->ctts_data);
1621 av_freep(&mov->streams[i]);
1624 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1625 av_freep(&mov->dv_fctx->streams[i]->codec);
1626 av_freep(&mov->dv_fctx->streams[i]);
1628 av_freep(&mov->dv_fctx);
1629 av_freep(&mov->dv_demux);
1634 AVInputFormat mov_demuxer = {
1635 "mov,mp4,m4a,3gp,3g2,mj2",
1636 "QuickTime/MPEG4/Motion JPEG 2000 format",