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 */
118 AVPaletteControl palette_control;
119 MOV_mdat_t *mdat_list;
121 DVDemuxContext *dv_demux;
122 AVFormatContext *dv_fctx;
123 int isom; /* 1 if file is ISO Media (mp4/3gp) */
127 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
129 /* those functions parse an atom */
131 1: found what I wanted, exit
132 0: continue to parse next atom
133 -1: error occured, exit
135 /* links atom IDs to parse functions */
136 typedef struct MOVParseTableEntry {
138 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
139 } MOVParseTableEntry;
141 static const MOVParseTableEntry mov_default_parse_table[];
143 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
145 int64_t total_size = 0;
150 a.offset = atom.offset;
153 atom.size = INT64_MAX;
154 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
158 a.size = get_be32(pb);
159 a.type = get_le32(pb);
163 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
164 a.type, (char*)&a.type, a.size, atom.size, total_size);
165 if (a.size == 1) { /* 64 bit extended size */
166 a.size = get_be64(pb) - 8;
171 a.size = atom.size - total_size;
178 a.size = FFMIN(a.size, atom.size - total_size);
180 for (i = 0; mov_default_parse_table[i].type != 0
181 && mov_default_parse_table[i].type != a.type; i++)
184 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
185 url_fskip(pb, a.size);
187 offset_t start_pos = url_ftell(pb);
189 err = mov_default_parse_table[i].parse(c, pb, a);
190 if (c->found_moov && c->found_mdat)
192 left = a.size - url_ftell(pb) + start_pos;
193 if (left > 0) /* skip garbage at atom end */
198 total_size += a.size;
201 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
202 url_fskip(pb, atom.size - total_size);
208 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
210 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
214 get_byte(pb); /* version */
215 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
218 ctype = get_le32(pb);
219 type = get_le32(pb); /* component subtype */
221 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
222 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
223 dprintf(c->fc, "stype= %c%c%c%c\n",
224 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
227 if(type == MKTAG('v', 'i', 'd', 'e'))
228 st->codec->codec_type = CODEC_TYPE_VIDEO;
229 else if(type == MKTAG('s', 'o', 'u', 'n'))
230 st->codec->codec_type = CODEC_TYPE_AUDIO;
231 else if(type == MKTAG('m', '1', 'a', ' '))
232 st->codec->codec_id = CODEC_ID_MP2;
233 else if(type == MKTAG('s', 'u', 'b', 'p')) {
234 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
235 st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
237 get_be32(pb); /* component manufacture */
238 get_be32(pb); /* component flags */
239 get_be32(pb); /* component flags mask */
242 return 0; /* nothing left to read */
244 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
248 static int mp4_read_descr_len(ByteIOContext *pb)
253 int c = get_byte(pb);
254 len = (len << 7) | (c & 0x7f);
261 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
265 len = mp4_read_descr_len(pb);
266 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
270 #define MP4ESDescrTag 0x03
271 #define MP4DecConfigDescrTag 0x04
272 #define MP4DecSpecificDescrTag 0x05
274 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
276 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
279 get_be32(pb); /* version + flags */
280 len = mp4_read_descr(c, pb, &tag);
281 if (tag == MP4ESDescrTag) {
282 get_be16(pb); /* ID */
283 get_byte(pb); /* priority */
285 get_be16(pb); /* ID */
287 len = mp4_read_descr(c, pb, &tag);
288 if (tag == MP4DecConfigDescrTag) {
289 int object_type_id = get_byte(pb);
290 get_byte(pb); /* stream type */
291 get_be24(pb); /* buffer size db */
292 get_be32(pb); /* max bitrate */
293 get_be32(pb); /* avg bitrate */
295 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
296 dprintf(c->fc, "esds object type id %d\n", object_type_id);
297 len = mp4_read_descr(c, pb, &tag);
298 if (tag == MP4DecSpecificDescrTag) {
299 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
300 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
301 if (st->codec->extradata) {
302 get_buffer(pb, st->codec->extradata, len);
303 st->codec->extradata_size = len;
305 if ((*st->codec->extradata >> 3) == 29) {
306 st->codec->codec_id = CODEC_ID_MP3ON4;
314 /* this atom contains actual media data */
315 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317 if(atom.size == 0) /* wrong one (MP4) */
319 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
320 c->mdat_list[c->mdat_count].offset = atom.offset;
321 c->mdat_list[c->mdat_count].size = atom.size;
325 return 1; /* found both, just go */
326 url_fskip(pb, atom.size);
327 return 0; /* now go for moov */
330 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
332 uint32_t type = get_le32(pb);
334 if (type != MKTAG('q','t',' ',' '))
336 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
337 get_be32(pb); /* minor version */
338 url_fskip(pb, atom.size - 8);
342 /* this atom should contain all header atoms */
343 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
345 if (mov_read_default(c, pb, atom) < 0)
347 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
348 /* so we don't parse the whole file if over a network */
351 return 1; /* found both, just go */
352 return 0; /* now go for mdat */
356 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
358 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
359 MOVStreamContext *sc = st->priv_data;
360 int version = get_byte(pb);
364 return 1; /* unsupported */
366 get_byte(pb); get_byte(pb);
367 get_byte(pb); /* flags */
373 get_be32(pb); /* creation time */
374 get_be32(pb); /* modification time */
377 sc->time_scale = get_be32(pb);
378 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
380 lang = get_be16(pb); /* language */
381 ff_mov_lang_to_iso639(lang, st->language);
382 get_be16(pb); /* quality */
387 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
389 int version = get_byte(pb); /* version */
390 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
396 get_be32(pb); /* creation time */
397 get_be32(pb); /* modification time */
399 c->time_scale = get_be32(pb); /* time scale */
401 dprintf(c->fc, "time scale = %i\n", c->time_scale);
403 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
404 get_be32(pb); /* preferred scale */
406 get_be16(pb); /* preferred volume */
408 url_fskip(pb, 10); /* reserved */
410 url_fskip(pb, 36); /* display matrix */
412 get_be32(pb); /* preview time */
413 get_be32(pb); /* preview duration */
414 get_be32(pb); /* poster time */
415 get_be32(pb); /* selection time */
416 get_be32(pb); /* selection duration */
417 get_be32(pb); /* current time */
418 get_be32(pb); /* next track ID */
423 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
425 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
427 if((uint64_t)atom.size > (1<<30))
430 // currently SVQ3 decoder expect full STSD header - so let's fake it
431 // this should be fixed and just SMI header should be passed
432 av_free(st->codec->extradata);
433 st->codec->extradata_size = 0x5a + atom.size;
434 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
436 if (st->codec->extradata) {
437 memcpy(st->codec->extradata, "SVQ3", 4); // fake
438 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
439 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
441 url_fskip(pb, atom.size);
446 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
448 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
449 int little_endian = get_be16(pb);
452 switch (st->codec->codec_id) {
453 case CODEC_ID_PCM_S24BE:
454 st->codec->codec_id = CODEC_ID_PCM_S24LE;
456 case CODEC_ID_PCM_S32BE:
457 st->codec->codec_id = CODEC_ID_PCM_S32LE;
466 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
467 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
469 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
470 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
472 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
474 buf= av_realloc(st->codec->extradata, size);
477 st->codec->extradata= buf;
478 buf+= st->codec->extradata_size;
479 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
480 AV_WB32( buf , atom.size + 8);
481 AV_WL32( buf + 4, atom.type);
482 get_buffer(pb, buf + 8, atom.size);
486 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
488 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
490 if((uint64_t)atom.size > (1<<30))
493 if (st->codec->codec_id == CODEC_ID_QDM2) {
494 // pass all frma atom to codec, needed at least for QDM2
495 av_free(st->codec->extradata);
496 st->codec->extradata_size = atom.size;
497 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
499 if (st->codec->extradata) {
500 get_buffer(pb, st->codec->extradata, atom.size);
502 url_fskip(pb, atom.size);
503 } else if (atom.size > 8) { /* to read frma, esds atoms */
504 if (mov_read_default(c, pb, atom) < 0)
507 url_fskip(pb, atom.size);
512 * This function reads atom content and puts data in extradata without tag
513 * nor size unlike mov_read_extradata.
515 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
517 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
519 if((uint64_t)atom.size > (1<<30))
522 av_free(st->codec->extradata);
524 st->codec->extradata_size = atom.size;
525 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
527 if (st->codec->extradata) {
528 get_buffer(pb, st->codec->extradata, atom.size);
530 url_fskip(pb, atom.size);
535 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
537 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
538 MOVStreamContext *sc = st->priv_data;
539 unsigned int i, entries;
541 get_byte(pb); /* version */
542 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
544 entries = get_be32(pb);
546 if(entries >= UINT_MAX/sizeof(int64_t))
549 sc->chunk_count = entries;
550 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
551 if (!sc->chunk_offsets)
553 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
554 for(i=0; i<entries; i++) {
555 sc->chunk_offsets[i] = get_be32(pb);
557 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
558 for(i=0; i<entries; i++) {
559 sc->chunk_offsets[i] = get_be64(pb);
567 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
569 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
570 MOVStreamContext *sc = st->priv_data;
571 int entries, frames_per_sample;
573 uint8_t codec_name[32];
575 /* for palette traversal */
576 unsigned int color_depth;
577 unsigned int color_start;
578 unsigned int color_count;
579 unsigned int color_end;
583 const uint8_t *color_table;
585 unsigned char r, g, b;
587 get_byte(pb); /* version */
588 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
590 entries = get_be32(pb);
592 while(entries--) { //Parsing Sample description table
594 MOV_atom_t a = { 0, 0, 0 };
595 offset_t start_pos = url_ftell(pb);
596 int size = get_be32(pb); /* size */
597 format = get_le32(pb); /* data format */
599 get_be32(pb); /* reserved */
600 get_be16(pb); /* reserved */
601 get_be16(pb); /* index */
603 if (st->codec->codec_tag) {
604 /* multiple fourcc, just skip for now */
605 url_fskip(pb, size - (url_ftell(pb) - start_pos));
609 st->codec->codec_tag = format;
610 id = codec_get_id(codec_movaudio_tags, format);
611 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
612 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
614 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
615 st->codec->codec_type = CODEC_TYPE_AUDIO;
616 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
617 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
618 id = codec_get_id(codec_movvideo_tags, format);
620 id = codec_get_id(codec_bmp_tags, format);
622 st->codec->codec_type = CODEC_TYPE_VIDEO;
625 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
626 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
627 (format >> 24) & 0xff, st->codec->codec_type);
629 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
630 st->codec->codec_id = id;
631 get_be16(pb); /* version */
632 get_be16(pb); /* revision level */
633 get_be32(pb); /* vendor */
634 get_be32(pb); /* temporal quality */
635 get_be32(pb); /* spatial quality */
637 st->codec->width = get_be16(pb); /* width */
638 st->codec->height = get_be16(pb); /* height */
640 get_be32(pb); /* horiz resolution */
641 get_be32(pb); /* vert resolution */
642 get_be32(pb); /* data size, always 0 */
643 frames_per_sample = get_be16(pb); /* frames per samples */
645 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
647 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
648 if (codec_name[0] <= 31) {
649 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
650 st->codec->codec_name[codec_name[0]] = 0;
653 st->codec->bits_per_sample = get_be16(pb); /* depth */
654 st->codec->color_table_id = get_be16(pb); /* colortable id */
656 /* figure out the palette situation */
657 color_depth = st->codec->bits_per_sample & 0x1F;
658 color_greyscale = st->codec->bits_per_sample & 0x20;
660 /* if the depth is 2, 4, or 8 bpp, file is palettized */
661 if ((color_depth == 2) || (color_depth == 4) ||
662 (color_depth == 8)) {
663 if (color_greyscale) {
664 /* compute the greyscale palette */
665 color_count = 1 << color_depth;
667 color_dec = 256 / (color_count - 1);
668 for (j = 0; j < color_count; j++) {
669 r = g = b = color_index;
670 c->palette_control.palette[j] =
671 (r << 16) | (g << 8) | (b);
672 color_index -= color_dec;
676 } else if (st->codec->color_table_id & 0x08) {
677 /* if flag bit 3 is set, use the default palette */
678 color_count = 1 << color_depth;
679 if (color_depth == 2)
680 color_table = ff_qt_default_palette_4;
681 else if (color_depth == 4)
682 color_table = ff_qt_default_palette_16;
684 color_table = ff_qt_default_palette_256;
686 for (j = 0; j < color_count; j++) {
687 r = color_table[j * 4 + 0];
688 g = color_table[j * 4 + 1];
689 b = color_table[j * 4 + 2];
690 c->palette_control.palette[j] =
691 (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 if ((color_start <= 255) &&
699 (color_end <= 255)) {
700 for (j = color_start; j <= color_end; j++) {
701 /* each R, G, or B component is 16 bits;
702 * only use the top 8 bits; skip alpha bytes
712 c->palette_control.palette[j] =
713 (r << 16) | (g << 8) | (b);
717 st->codec->palctrl = &c->palette_control;
718 st->codec->palctrl->palette_changed = 1;
720 st->codec->palctrl = NULL;
721 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
723 uint16_t version = get_be16(pb);
725 st->codec->codec_id = id;
726 get_be16(pb); /* revision level */
727 get_be32(pb); /* vendor */
729 st->codec->channels = get_be16(pb); /* channel count */
730 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
731 st->codec->bits_per_sample = get_be16(pb); /* sample size */
732 /* do we need to force to 16 for AMR ? */
734 /* handle specific s8 codec */
735 get_be16(pb); /* compression id = 0*/
736 get_be16(pb); /* packet size = 0 */
738 st->codec->sample_rate = ((get_be32(pb) >> 16));
740 switch (st->codec->codec_id) {
741 case CODEC_ID_PCM_S8:
742 case CODEC_ID_PCM_U8:
743 if (st->codec->bits_per_sample == 16)
744 st->codec->codec_id = CODEC_ID_PCM_S16BE;
746 case CODEC_ID_PCM_S16LE:
747 case CODEC_ID_PCM_S16BE:
748 if (st->codec->bits_per_sample == 8)
749 st->codec->codec_id = CODEC_ID_PCM_S8;
750 else if (st->codec->bits_per_sample == 24)
751 st->codec->codec_id = CODEC_ID_PCM_S24BE;
757 //Read QT version 1 fields. In version 0 these do not exist.
758 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
761 sc->samples_per_frame = get_be32(pb);
762 get_be32(pb); /* bytes per packet */
763 sc->bytes_per_frame = get_be32(pb);
764 get_be32(pb); /* bytes per sample */
765 } else if(version==2) {
766 get_be32(pb); /* sizeof struct only */
767 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
768 st->codec->channels = get_be32(pb);
769 get_be32(pb); /* always 0x7F000000 */
770 get_be32(pb); /* bits per channel if sound is uncompressed */
771 get_be32(pb); /* lcpm format specific flag */
772 get_be32(pb); /* bytes per audio packet if constant */
773 get_be32(pb); /* lpcm frames per audio packet if constant */
777 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
778 if (bits_per_sample) {
779 st->codec->bits_per_sample = bits_per_sample;
780 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
783 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
784 url_fskip(pb, size - (url_ftell(pb) - start_pos));
786 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
787 a.size = size - (url_ftell(pb) - start_pos);
789 if (mov_read_default(c, pb, a) < 0)
791 } else if (a.size > 0)
792 url_fskip(pb, a.size);
795 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
796 st->codec->sample_rate= sc->time_scale;
799 /* special codec parameters handling */
800 switch (st->codec->codec_id) {
801 #ifdef CONFIG_H261_DECODER
804 #ifdef CONFIG_H263_DECODER
807 #ifdef CONFIG_MPEG4_DECODER
810 st->codec->width= 0; /* let decoder init width/height */
811 st->codec->height= 0;
813 #ifdef CONFIG_LIBFAAD
816 #ifdef CONFIG_VORBIS_DECODER
817 case CODEC_ID_VORBIS:
819 case CODEC_ID_MP3ON4:
820 st->codec->sample_rate= 0; /* let decoder init parameters properly */
822 #ifdef CONFIG_DV_DEMUXER
823 case CODEC_ID_DVAUDIO:
824 c->dv_fctx = av_alloc_format_context();
825 c->dv_demux = dv_init_demux(c->dv_fctx);
827 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
830 sc->dv_audio_container = 1;
831 st->codec->codec_id = CODEC_ID_PCM_S16LE;
834 /* no ifdef since parameters are always those */
835 case CODEC_ID_AMR_WB:
836 st->codec->sample_rate= 16000;
837 st->codec->channels= 1; /* really needed */
839 case CODEC_ID_AMR_NB:
840 st->codec->sample_rate= 8000;
841 st->codec->channels= 1; /* really needed */
845 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
846 st->need_parsing = AVSTREAM_PARSE_FULL;
848 case CODEC_ID_ADPCM_MS:
849 case CODEC_ID_ADPCM_IMA_WAV:
850 st->codec->block_align = sc->bytes_per_frame;
859 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
861 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
862 MOVStreamContext *sc = st->priv_data;
863 unsigned int i, entries;
865 get_byte(pb); /* version */
866 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
868 entries = get_be32(pb);
870 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
873 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
875 sc->sample_to_chunk_sz = entries;
876 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
877 if (!sc->sample_to_chunk)
879 for(i=0; i<entries; i++) {
880 sc->sample_to_chunk[i].first = get_be32(pb);
881 sc->sample_to_chunk[i].count = get_be32(pb);
882 sc->sample_to_chunk[i].id = get_be32(pb);
887 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
889 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
890 MOVStreamContext *sc = st->priv_data;
891 unsigned int i, entries;
893 get_byte(pb); /* version */
894 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
896 entries = get_be32(pb);
898 if(entries >= UINT_MAX / sizeof(int))
901 sc->keyframe_count = entries;
903 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
905 sc->keyframes = av_malloc(entries * sizeof(int));
908 for(i=0; i<entries; i++) {
909 sc->keyframes[i] = get_be32(pb);
910 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
915 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
917 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
918 MOVStreamContext *sc = st->priv_data;
919 unsigned int i, entries, sample_size;
921 get_byte(pb); /* version */
922 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
924 sample_size = get_be32(pb);
925 if (!sc->sample_size) /* do not overwrite value computed in stsd */
926 sc->sample_size = sample_size;
927 entries = get_be32(pb);
928 if(entries >= UINT_MAX / sizeof(int))
931 sc->sample_count = entries;
935 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
937 sc->sample_sizes = av_malloc(entries * sizeof(int));
938 if (!sc->sample_sizes)
940 for(i=0; i<entries; i++) {
941 sc->sample_sizes[i] = get_be32(pb);
942 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
947 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
949 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
950 MOVStreamContext *sc = st->priv_data;
951 unsigned int i, entries;
953 int64_t total_sample_count=0;
955 get_byte(pb); /* version */
956 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
957 entries = get_be32(pb);
958 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
961 sc->stts_count = entries;
962 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
965 dprintf(c->fc, "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(MOV_stts_t))
1004 sc->ctts_count = entries;
1005 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1008 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1010 for(i=0; i<entries; i++) {
1011 int count =get_be32(pb);
1012 int duration =get_be32(pb);
1015 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1017 url_fskip(pb, 8 * (entries - i - 1));
1020 sc->ctts_data[i].count = count;
1021 sc->ctts_data[i].duration= duration;
1023 sc->time_rate= ff_gcd(sc->time_rate, duration);
1028 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1031 MOVStreamContext *sc;
1033 st = av_new_stream(c->fc, c->fc->nb_streams);
1035 sc = av_mallocz(sizeof(MOVStreamContext));
1042 st->codec->codec_type = CODEC_TYPE_DATA;
1043 st->start_time = 0; /* XXX: check */
1045 return mov_read_default(c, pb, atom);
1048 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1050 uint16_t str_size = get_be16(pb); /* string length */;
1052 get_be16(pb); /* skip language */
1053 get_buffer(pb, str, FFMIN(size, str_size));
1056 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1058 uint64_t end = url_ftell(pb) + atom.size;
1060 while (url_ftell(pb) + 8 < end) {
1061 uint32_t tag_size = get_be32(pb);
1062 uint32_t tag = get_le32(pb);
1063 uint64_t next = url_ftell(pb) + tag_size - 8;
1065 if (next > end) // stop if tag_size is wrong
1069 case MKTAG(0xa9,'n','a','m'):
1070 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1072 case MKTAG(0xa9,'w','r','t'):
1073 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1075 case MKTAG(0xa9,'c','p','y'):
1076 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1078 case MKTAG(0xa9,'i','n','f'):
1079 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1085 url_fseek(pb, next, SEEK_SET);
1091 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1093 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1094 int version = get_byte(pb);
1096 get_byte(pb); get_byte(pb);
1097 get_byte(pb); /* flags */
1099 MOV_TRACK_ENABLED 0x0001
1100 MOV_TRACK_IN_MOVIE 0x0002
1101 MOV_TRACK_IN_PREVIEW 0x0004
1102 MOV_TRACK_IN_POSTER 0x0008
1109 get_be32(pb); /* creation time */
1110 get_be32(pb); /* modification time */
1112 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1113 get_be32(pb); /* reserved */
1114 st->start_time = 0; /* check */
1115 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1116 get_be32(pb); /* reserved */
1117 get_be32(pb); /* reserved */
1119 get_be16(pb); /* layer */
1120 get_be16(pb); /* alternate group */
1121 get_be16(pb); /* volume */
1122 get_be16(pb); /* reserved */
1124 url_fskip(pb, 36); /* display matrix */
1126 /* those are fixed-point */
1127 get_be32(pb); /* track width */
1128 get_be32(pb); /* track height */
1133 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1134 /* like the files created with Adobe Premiere 5.0, for samples see */
1135 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1136 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1141 return 0; /* continue */
1142 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1143 url_fskip(pb, atom.size - 4);
1146 atom.type = get_le32(pb);
1149 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1150 url_fskip(pb, atom.size);
1153 err = mov_read_mdat(c, pb, atom);
1157 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1162 uint8_t *moov_data; /* uncompressed data */
1163 long cmov_len, moov_len;
1166 get_be32(pb); /* dcom atom */
1167 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1169 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1170 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1173 get_be32(pb); /* cmvd atom */
1174 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1176 moov_len = get_be32(pb); /* uncompressed size */
1177 cmov_len = atom.size - 6 * 4;
1179 cmov_data = av_malloc(cmov_len);
1182 moov_data = av_malloc(moov_len);
1187 get_buffer(pb, cmov_data, cmov_len);
1188 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1190 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1192 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1194 atom.size = moov_len;
1196 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1198 ret = mov_read_default(c, &ctx, atom);
1203 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1208 /* edit list atom */
1209 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1211 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1214 get_byte(pb); /* version */
1215 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1216 edit_count= sc->edit_count = get_be32(pb); /* entries */
1218 for(i=0; i<edit_count; i++){
1219 get_be32(pb); /* Track duration */
1220 get_be32(pb); /* Media time */
1221 get_be32(pb); /* Media rate */
1223 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1227 static const MOVParseTableEntry mov_default_parse_table[] = {
1229 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1230 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1231 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1232 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1233 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1234 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1235 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1236 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1237 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1238 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1239 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1240 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1241 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1242 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1243 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1244 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1245 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1246 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1247 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1248 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1249 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1250 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1251 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1252 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1253 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1254 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1255 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1256 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1257 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1258 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1259 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1260 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1261 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1265 /* XXX: is it sufficient ? */
1266 static int mov_probe(AVProbeData *p)
1268 unsigned int offset;
1272 /* check file header */
1275 /* ignore invalid offset */
1276 if ((offset + 8) > (unsigned int)p->buf_size)
1278 tag = AV_RL32(p->buf + offset + 4);
1280 /* check for obvious tags */
1281 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1282 case MKTAG( 'm', 'o', 'o', 'v' ):
1283 case MKTAG( 'm', 'd', 'a', 't' ):
1284 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1285 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1286 return AVPROBE_SCORE_MAX;
1287 /* those are more common words, so rate then a bit less */
1288 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1289 case MKTAG( 'w', 'i', 'd', 'e' ):
1290 case MKTAG( 'f', 'r', 'e', 'e' ):
1291 case MKTAG( 'j', 'u', 'n', 'k' ):
1292 case MKTAG( 'p', 'i', 'c', 't' ):
1293 return AVPROBE_SCORE_MAX - 5;
1294 case MKTAG( 'f', 't', 'y', 'p' ):
1295 case MKTAG( 's', 'k', 'i', 'p' ):
1296 case MKTAG( 'u', 'u', 'i', 'd' ):
1297 offset = AV_RB32(p->buf+offset) + offset;
1298 /* if we only find those cause probedata is too small at least rate them */
1299 score = AVPROBE_SCORE_MAX - 50;
1302 /* unrecognized tag */
1309 static void mov_build_index(MOVContext *mov, AVStream *st)
1311 MOVStreamContext *sc = st->priv_data;
1312 offset_t current_offset;
1313 int64_t current_dts = 0;
1314 unsigned int stts_index = 0;
1315 unsigned int stsc_index = 0;
1316 unsigned int stss_index = 0;
1317 unsigned int i, j, k;
1319 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1320 unsigned int current_sample = 0;
1321 unsigned int stts_sample = 0;
1322 unsigned int keyframe, sample_size;
1323 unsigned int distance = 0;
1325 st->nb_frames = sc->sample_count;
1326 for (i = 0; i < sc->chunk_count; i++) {
1327 current_offset = sc->chunk_offsets[i];
1328 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1329 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", "
1344 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1345 current_offset, current_dts, sample_size, distance, keyframe);
1346 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1347 keyframe ? AVINDEX_KEYFRAME : 0);
1348 current_offset += sample_size;
1349 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1350 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1354 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1360 } else { /* read whole chunk */
1361 unsigned int chunk_samples, chunk_size, chunk_duration;
1362 for (i = 0; i < sc->chunk_count; i++) {
1363 current_offset = sc->chunk_offsets[i];
1364 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1365 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1367 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1368 /* get chunk size */
1369 if (sc->sample_size > 1 ||
1370 st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1371 chunk_size = chunk_samples * sc->sample_size;
1372 else if (sc->samples_per_frame > 0 &&
1373 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1374 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1375 else { /* workaround to find nearest next chunk offset */
1376 chunk_size = INT_MAX;
1377 for (j = 0; j < mov->fc->nb_streams; j++) {
1378 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1379 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1380 if (msc->chunk_offsets[k] > current_offset &&
1381 msc->chunk_offsets[k] - current_offset < chunk_size) {
1382 chunk_size = msc->chunk_offsets[k] - current_offset;
1383 msc->next_chunk = k;
1388 /* check for last chunk */
1389 if (chunk_size == INT_MAX)
1390 for (j = 0; j < mov->mdat_count; j++) {
1391 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1392 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1393 if (mov->mdat_list[j].offset <= current_offset &&
1394 mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1395 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1397 assert(chunk_size != INT_MAX);
1398 for (j = 0; j < mov->fc->nb_streams; j++) {
1399 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1400 msc->next_chunk = 0;
1403 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1404 /* get chunk duration */
1406 while (chunk_samples > 0) {
1407 if (chunk_samples < sc->stts_data[stts_index].count) {
1408 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1409 sc->stts_data[stts_index].count -= chunk_samples;
1412 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1413 chunk_samples -= sc->stts_data[stts_index].count;
1414 if (stts_index + 1 < sc->stts_count) {
1419 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1420 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1421 assert(chunk_duration % sc->time_rate == 0);
1422 current_dts += chunk_duration / sc->time_rate;
1426 /* adjust sample count to avindex entries */
1427 sc->sample_count = st->nb_index_entries;
1430 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1432 MOVContext *mov = s->priv_data;
1433 ByteIOContext *pb = s->pb;
1435 MOV_atom_t atom = { 0, 0, 0 };
1439 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1440 atom.size = url_fsize(pb);
1442 atom.size = INT64_MAX;
1444 /* check MOV header */
1445 err = mov_read_default(mov, pb, atom);
1446 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1447 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1448 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1451 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1453 for(i=0; i<s->nb_streams; i++) {
1454 AVStream *st = s->streams[i];
1455 MOVStreamContext *sc = st->priv_data;
1457 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1458 (!sc->sample_size && !sc->sample_count)){
1459 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1460 sc->sample_count = 0; //ignore track
1466 sc->time_scale= mov->time_scale;
1467 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1469 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1470 st->codec->frame_size = sc->stts_data[0].duration;
1472 if(st->duration != AV_NOPTS_VALUE){
1473 assert(st->duration % sc->time_rate == 0);
1474 st->duration /= sc->time_rate;
1477 mov_build_index(mov, st);
1480 for(i=0; i<s->nb_streams; i++) {
1481 MOVStreamContext *sc = s->streams[i]->priv_data;
1482 /* Do not need those anymore. */
1483 av_freep(&sc->chunk_offsets);
1484 av_freep(&sc->sample_to_chunk);
1485 av_freep(&sc->sample_sizes);
1486 av_freep(&sc->keyframes);
1487 av_freep(&sc->stts_data);
1489 av_freep(&mov->mdat_list);
1493 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1495 MOVContext *mov = s->priv_data;
1496 MOVStreamContext *sc = 0;
1497 AVIndexEntry *sample = 0;
1498 int64_t best_dts = INT64_MAX;
1501 for (i = 0; i < s->nb_streams; i++) {
1502 AVStream *st = s->streams[i];
1503 MOVStreamContext *msc = st->priv_data;
1504 if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1505 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1506 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1507 AV_TIME_BASE, msc->time_scale);
1508 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1509 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1510 (!url_is_streamed(s->pb) &&
1511 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1512 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1513 sample = current_sample;
1521 /* must be done just before reading, to avoid infinite loop on sample */
1522 sc->current_sample++;
1523 if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1524 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1525 sc->ffindex, sample->pos);
1528 #ifdef CONFIG_DV_DEMUXER
1529 if (sc->dv_audio_container) {
1530 dv_get_packet(mov->dv_demux, pkt);
1531 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1534 av_get_packet(s->pb, pkt, sample->size);
1535 #ifdef CONFIG_DV_DEMUXER
1536 if (mov->dv_demux) {
1537 void *pkt_destruct_func = pkt->destruct;
1538 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1539 pkt->destruct = pkt_destruct_func;
1543 pkt->stream_index = sc->ffindex;
1544 pkt->dts = sample->timestamp;
1545 if (sc->ctts_data) {
1546 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1547 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1548 /* update ctts context */
1549 sc->sample_to_ctime_sample++;
1550 if (sc->sample_to_ctime_index < sc->ctts_count &&
1551 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1552 sc->sample_to_ctime_index++;
1553 sc->sample_to_ctime_sample = 0;
1556 pkt->pts = pkt->dts;
1558 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1559 pkt->pos = sample->pos;
1560 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1561 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1565 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1567 MOVStreamContext *sc = st->priv_data;
1568 int sample, time_sample;
1571 sample = av_index_search_timestamp(st, timestamp, flags);
1572 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1573 if (sample < 0) /* not sure what to do */
1575 sc->current_sample = sample;
1576 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1577 /* adjust ctts index */
1578 if (sc->ctts_data) {
1580 for (i = 0; i < sc->ctts_count; i++) {
1581 int next = time_sample + sc->ctts_data[i].count;
1582 if (next > sc->current_sample) {
1583 sc->sample_to_ctime_index = i;
1584 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1593 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1596 int64_t seek_timestamp, timestamp;
1600 if (stream_index >= s->nb_streams)
1603 st = s->streams[stream_index];
1604 sample = mov_seek_stream(st, sample_time, flags);
1608 /* adjust seek timestamp to found sample timestamp */
1609 seek_timestamp = st->index_entries[sample].timestamp;
1611 for (i = 0; i < s->nb_streams; i++) {
1613 if (stream_index == i || st->discard == AVDISCARD_ALL)
1616 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1617 mov_seek_stream(st, timestamp, flags);
1622 static int mov_read_close(AVFormatContext *s)
1625 MOVContext *mov = s->priv_data;
1626 for(i=0; i<s->nb_streams; i++) {
1627 MOVStreamContext *sc = s->streams[i]->priv_data;
1628 av_freep(&sc->ctts_data);
1631 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1632 av_freep(&mov->dv_fctx->streams[i]->codec);
1633 av_freep(&mov->dv_fctx->streams[i]);
1635 av_freep(&mov->dv_fctx);
1636 av_freep(&mov->dv_demux);
1641 AVInputFormat mov_demuxer = {
1642 "mov,mp4,m4a,3gp,3g2,mj2",
1643 "QuickTime/MPEG4/Motion JPEG 2000 format",