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) */
78 struct MOVParseTableEntry;
80 typedef struct MOVStreamContext {
81 int ffindex; /* the ffmpeg stream id */
83 unsigned int chunk_count;
84 int64_t *chunk_offsets;
85 unsigned int stts_count;
86 MOV_stts_t *stts_data;
87 unsigned int ctts_count;
88 MOV_stts_t *ctts_data;
89 unsigned int edit_count; /* number of 'edit' (elst atom) */
90 unsigned int sample_to_chunk_sz;
91 MOV_stsc_t *sample_to_chunk;
92 int sample_to_ctime_index;
93 int sample_to_ctime_sample;
94 unsigned int sample_size;
95 unsigned int sample_count;
97 unsigned int keyframe_count;
102 unsigned int bytes_per_frame;
103 unsigned int samples_per_frame;
104 int dv_audio_container;
105 int pseudo_stream_id;
106 int16_t audio_cid; ///< stsd audio compression id
109 typedef struct MOVContext {
112 int64_t duration; /* duration of the longest track */
113 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
114 int found_mdat; /* we suppose we have enough data to read the file */
115 AVPaletteControl palette_control;
116 DVDemuxContext *dv_demux;
117 AVFormatContext *dv_fctx;
118 int isom; /* 1 if file is ISO Media (mp4/3gp) */
122 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
124 /* those functions parse an atom */
126 1: found what I wanted, exit
127 0: continue to parse next atom
128 -1: error occured, exit
130 /* links atom IDs to parse functions */
131 typedef struct MOVParseTableEntry {
133 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
134 } MOVParseTableEntry;
136 static const MOVParseTableEntry mov_default_parse_table[];
138 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
140 int64_t total_size = 0;
145 a.offset = atom.offset;
148 atom.size = INT64_MAX;
149 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
153 a.size = get_be32(pb);
154 a.type = get_le32(pb);
158 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
159 a.type, (char*)&a.type, a.size, atom.size, total_size);
160 if (a.size == 1) { /* 64 bit extended size */
161 a.size = get_be64(pb) - 8;
166 a.size = atom.size - total_size;
173 a.size = FFMIN(a.size, atom.size - total_size);
175 for (i = 0; mov_default_parse_table[i].type != 0
176 && mov_default_parse_table[i].type != a.type; i++)
179 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
180 url_fskip(pb, a.size);
182 offset_t start_pos = url_ftell(pb);
184 err = mov_default_parse_table[i].parse(c, pb, a);
185 if (c->found_moov && c->found_mdat)
187 left = a.size - url_ftell(pb) + start_pos;
188 if (left > 0) /* skip garbage at atom end */
193 total_size += a.size;
196 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
197 url_fskip(pb, atom.size - total_size);
203 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
205 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
209 get_byte(pb); /* version */
210 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
213 ctype = get_le32(pb);
214 type = get_le32(pb); /* component subtype */
216 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
217 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
218 dprintf(c->fc, "stype= %c%c%c%c\n",
219 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
222 if(type == MKTAG('v', 'i', 'd', 'e'))
223 st->codec->codec_type = CODEC_TYPE_VIDEO;
224 else if(type == MKTAG('s', 'o', 'u', 'n'))
225 st->codec->codec_type = CODEC_TYPE_AUDIO;
226 else if(type == MKTAG('m', '1', 'a', ' '))
227 st->codec->codec_id = CODEC_ID_MP2;
228 else if(type == MKTAG('s', 'u', 'b', 'p')) {
229 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
231 get_be32(pb); /* component manufacture */
232 get_be32(pb); /* component flags */
233 get_be32(pb); /* component flags mask */
236 return 0; /* nothing left to read */
238 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
242 static int mp4_read_descr_len(ByteIOContext *pb)
247 int c = get_byte(pb);
248 len = (len << 7) | (c & 0x7f);
255 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
259 len = mp4_read_descr_len(pb);
260 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
264 #define MP4ESDescrTag 0x03
265 #define MP4DecConfigDescrTag 0x04
266 #define MP4DecSpecificDescrTag 0x05
268 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
270 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
273 get_be32(pb); /* version + flags */
274 len = mp4_read_descr(c, pb, &tag);
275 if (tag == MP4ESDescrTag) {
276 get_be16(pb); /* ID */
277 get_byte(pb); /* priority */
279 get_be16(pb); /* ID */
281 len = mp4_read_descr(c, pb, &tag);
282 if (tag == MP4DecConfigDescrTag) {
283 int object_type_id = get_byte(pb);
284 get_byte(pb); /* stream type */
285 get_be24(pb); /* buffer size db */
286 get_be32(pb); /* max bitrate */
287 get_be32(pb); /* avg bitrate */
289 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
290 dprintf(c->fc, "esds object type id %d\n", object_type_id);
291 len = mp4_read_descr(c, pb, &tag);
292 if (tag == MP4DecSpecificDescrTag) {
293 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
294 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
295 if (st->codec->extradata) {
296 get_buffer(pb, st->codec->extradata, len);
297 st->codec->extradata_size = len;
299 if ((*st->codec->extradata >> 3) == 29) {
300 st->codec->codec_id = CODEC_ID_MP3ON4;
308 /* this atom contains actual media data */
309 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
311 if(atom.size == 0) /* wrong one (MP4) */
315 return 1; /* found both, just go */
316 url_fskip(pb, atom.size);
317 return 0; /* now go for moov */
320 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
322 uint32_t type = get_le32(pb);
324 if (type != MKTAG('q','t',' ',' '))
326 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
327 get_be32(pb); /* minor version */
328 url_fskip(pb, atom.size - 8);
332 /* this atom should contain all header atoms */
333 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
335 if (mov_read_default(c, pb, atom) < 0)
337 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
338 /* so we don't parse the whole file if over a network */
341 return 1; /* found both, just go */
342 return 0; /* now go for mdat */
346 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
348 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
349 MOVStreamContext *sc = st->priv_data;
350 int version = get_byte(pb);
354 return 1; /* unsupported */
356 get_byte(pb); get_byte(pb);
357 get_byte(pb); /* flags */
363 get_be32(pb); /* creation time */
364 get_be32(pb); /* modification time */
367 sc->time_scale = get_be32(pb);
368 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
370 lang = get_be16(pb); /* language */
371 ff_mov_lang_to_iso639(lang, st->language);
372 get_be16(pb); /* quality */
377 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
379 int version = get_byte(pb); /* version */
380 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
386 get_be32(pb); /* creation time */
387 get_be32(pb); /* modification time */
389 c->time_scale = get_be32(pb); /* time scale */
391 dprintf(c->fc, "time scale = %i\n", c->time_scale);
393 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
394 get_be32(pb); /* preferred scale */
396 get_be16(pb); /* preferred volume */
398 url_fskip(pb, 10); /* reserved */
400 url_fskip(pb, 36); /* display matrix */
402 get_be32(pb); /* preview time */
403 get_be32(pb); /* preview duration */
404 get_be32(pb); /* poster time */
405 get_be32(pb); /* selection time */
406 get_be32(pb); /* selection duration */
407 get_be32(pb); /* current time */
408 get_be32(pb); /* next track ID */
413 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
415 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
417 if((uint64_t)atom.size > (1<<30))
420 // currently SVQ3 decoder expect full STSD header - so let's fake it
421 // this should be fixed and just SMI header should be passed
422 av_free(st->codec->extradata);
423 st->codec->extradata_size = 0x5a + atom.size;
424 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
426 if (st->codec->extradata) {
427 memcpy(st->codec->extradata, "SVQ3", 4); // fake
428 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
429 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
431 url_fskip(pb, atom.size);
436 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
438 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
439 int little_endian = get_be16(pb);
442 switch (st->codec->codec_id) {
443 case CODEC_ID_PCM_S24BE:
444 st->codec->codec_id = CODEC_ID_PCM_S24LE;
446 case CODEC_ID_PCM_S32BE:
447 st->codec->codec_id = CODEC_ID_PCM_S32LE;
456 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
457 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
459 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
460 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
462 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
464 buf= av_realloc(st->codec->extradata, size);
467 st->codec->extradata= buf;
468 buf+= st->codec->extradata_size;
469 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
470 AV_WB32( buf , atom.size + 8);
471 AV_WL32( buf + 4, atom.type);
472 get_buffer(pb, buf + 8, atom.size);
476 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
478 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
480 if((uint64_t)atom.size > (1<<30))
483 if (st->codec->codec_id == CODEC_ID_QDM2) {
484 // pass all frma atom to codec, needed at least for QDM2
485 av_free(st->codec->extradata);
486 st->codec->extradata_size = atom.size;
487 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
489 if (st->codec->extradata) {
490 get_buffer(pb, st->codec->extradata, atom.size);
492 url_fskip(pb, atom.size);
493 } else if (atom.size > 8) { /* to read frma, esds atoms */
494 if (mov_read_default(c, pb, atom) < 0)
497 url_fskip(pb, atom.size);
502 * This function reads atom content and puts data in extradata without tag
503 * nor size unlike mov_read_extradata.
505 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
507 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
509 if((uint64_t)atom.size > (1<<30))
512 av_free(st->codec->extradata);
514 st->codec->extradata_size = atom.size;
515 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
517 if (st->codec->extradata) {
518 get_buffer(pb, st->codec->extradata, atom.size);
520 url_fskip(pb, atom.size);
525 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
527 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
528 MOVStreamContext *sc = st->priv_data;
529 unsigned int i, entries;
531 get_byte(pb); /* version */
532 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
534 entries = get_be32(pb);
536 if(entries >= UINT_MAX/sizeof(int64_t))
539 sc->chunk_count = entries;
540 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
541 if (!sc->chunk_offsets)
543 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
544 for(i=0; i<entries; i++) {
545 sc->chunk_offsets[i] = get_be32(pb);
547 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
548 for(i=0; i<entries; i++) {
549 sc->chunk_offsets[i] = get_be64(pb);
557 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
559 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
560 MOVStreamContext *sc = st->priv_data;
561 int entries, frames_per_sample;
563 uint8_t codec_name[32];
565 /* for palette traversal */
566 unsigned int color_depth;
567 unsigned int color_start;
568 unsigned int color_count;
569 unsigned int color_end;
573 const uint8_t *color_table;
574 int j, pseudo_stream_id;
575 unsigned char r, g, b;
577 get_byte(pb); /* version */
578 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
580 entries = get_be32(pb);
582 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
584 MOV_atom_t a = { 0, 0, 0 };
585 offset_t start_pos = url_ftell(pb);
586 int size = get_be32(pb); /* size */
587 format = get_le32(pb); /* data format */
589 get_be32(pb); /* reserved */
590 get_be16(pb); /* reserved */
591 get_be16(pb); /* index */
593 if (st->codec->codec_tag &&
594 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
595 : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
597 /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
598 seperate AVStream but this needs a few changes in the mov demuxer, patch
600 url_fskip(pb, size - (url_ftell(pb) - start_pos));
603 sc->pseudo_stream_id= pseudo_stream_id;
605 st->codec->codec_tag = format;
606 id = codec_get_id(codec_movaudio_tags, format);
607 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
608 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
610 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
611 st->codec->codec_type = CODEC_TYPE_AUDIO;
612 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
613 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
614 id = codec_get_id(codec_movvideo_tags, format);
616 id = codec_get_id(codec_bmp_tags, format);
618 st->codec->codec_type = CODEC_TYPE_VIDEO;
619 else if(st->codec->codec_type == CODEC_TYPE_DATA){
620 id = codec_get_id(ff_codec_movsubtitle_tags, format);
622 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
626 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
627 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
628 (format >> 24) & 0xff, st->codec->codec_type);
630 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
631 st->codec->codec_id = id;
632 get_be16(pb); /* version */
633 get_be16(pb); /* revision level */
634 get_be32(pb); /* vendor */
635 get_be32(pb); /* temporal quality */
636 get_be32(pb); /* spatial quality */
638 st->codec->width = get_be16(pb); /* width */
639 st->codec->height = get_be16(pb); /* height */
641 get_be32(pb); /* horiz resolution */
642 get_be32(pb); /* vert resolution */
643 get_be32(pb); /* data size, always 0 */
644 frames_per_sample = get_be16(pb); /* frames per samples */
646 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
648 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
649 if (codec_name[0] <= 31) {
650 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
651 st->codec->codec_name[codec_name[0]] = 0;
654 st->codec->bits_per_sample = get_be16(pb); /* depth */
655 st->codec->color_table_id = get_be16(pb); /* colortable id */
657 /* figure out the palette situation */
658 color_depth = st->codec->bits_per_sample & 0x1F;
659 color_greyscale = st->codec->bits_per_sample & 0x20;
661 /* if the depth is 2, 4, or 8 bpp, file is palettized */
662 if ((color_depth == 2) || (color_depth == 4) ||
663 (color_depth == 8)) {
664 if (color_greyscale) {
665 /* compute the greyscale palette */
666 color_count = 1 << color_depth;
668 color_dec = 256 / (color_count - 1);
669 for (j = 0; j < color_count; j++) {
670 r = g = b = color_index;
671 c->palette_control.palette[j] =
672 (r << 16) | (g << 8) | (b);
673 color_index -= color_dec;
677 } else if (st->codec->color_table_id & 0x08) {
678 /* if flag bit 3 is set, use the default palette */
679 color_count = 1 << color_depth;
680 if (color_depth == 2)
681 color_table = ff_qt_default_palette_4;
682 else if (color_depth == 4)
683 color_table = ff_qt_default_palette_16;
685 color_table = ff_qt_default_palette_256;
687 for (j = 0; j < color_count; j++) {
688 r = color_table[j * 4 + 0];
689 g = color_table[j * 4 + 1];
690 b = color_table[j * 4 + 2];
691 c->palette_control.palette[j] =
692 (r << 16) | (g << 8) | (b);
695 /* load the palette from the file */
696 color_start = get_be32(pb);
697 color_count = get_be16(pb);
698 color_end = get_be16(pb);
699 if ((color_start <= 255) &&
700 (color_end <= 255)) {
701 for (j = color_start; j <= color_end; j++) {
702 /* each R, G, or B component is 16 bits;
703 * only use the top 8 bits; skip alpha bytes
713 c->palette_control.palette[j] =
714 (r << 16) | (g << 8) | (b);
718 st->codec->palctrl = &c->palette_control;
719 st->codec->palctrl->palette_changed = 1;
721 st->codec->palctrl = NULL;
722 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
724 uint16_t version = get_be16(pb);
726 st->codec->codec_id = id;
727 get_be16(pb); /* revision level */
728 get_be32(pb); /* vendor */
730 st->codec->channels = get_be16(pb); /* channel count */
731 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
732 st->codec->bits_per_sample = get_be16(pb); /* sample size */
734 sc->audio_cid = get_be16(pb);
735 get_be16(pb); /* packet size = 0 */
737 st->codec->sample_rate = ((get_be32(pb) >> 16));
739 switch (st->codec->codec_id) {
740 case CODEC_ID_PCM_S8:
741 case CODEC_ID_PCM_U8:
742 if (st->codec->bits_per_sample == 16)
743 st->codec->codec_id = CODEC_ID_PCM_S16BE;
745 case CODEC_ID_PCM_S16LE:
746 case CODEC_ID_PCM_S16BE:
747 if (st->codec->bits_per_sample == 8)
748 st->codec->codec_id = CODEC_ID_PCM_S8;
749 else if (st->codec->bits_per_sample == 24)
750 st->codec->codec_id = CODEC_ID_PCM_S24BE;
752 /* set values for old format before stsd version 1 appeared */
754 sc->samples_per_frame = 6;
755 sc->bytes_per_frame = 2*st->codec->channels;
758 sc->samples_per_frame = 6;
759 sc->bytes_per_frame = 1*st->codec->channels;
761 case CODEC_ID_ADPCM_IMA_QT:
762 sc->samples_per_frame = 64;
763 sc->bytes_per_frame = 34*st->codec->channels;
769 //Read QT version 1 fields. In version 0 these do not exist.
770 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
773 sc->samples_per_frame = get_be32(pb);
774 get_be32(pb); /* bytes per packet */
775 sc->bytes_per_frame = get_be32(pb);
776 get_be32(pb); /* bytes per sample */
777 } else if(version==2) {
778 get_be32(pb); /* sizeof struct only */
779 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
780 st->codec->channels = get_be32(pb);
781 get_be32(pb); /* always 0x7F000000 */
782 get_be32(pb); /* bits per channel if sound is uncompressed */
783 get_be32(pb); /* lcpm format specific flag */
784 get_be32(pb); /* bytes per audio packet if constant */
785 get_be32(pb); /* lpcm frames per audio packet if constant */
789 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
790 if (bits_per_sample) {
791 st->codec->bits_per_sample = bits_per_sample;
792 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
794 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
795 st->codec->codec_id= id;
797 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
798 url_fskip(pb, size - (url_ftell(pb) - start_pos));
800 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
801 a.size = size - (url_ftell(pb) - start_pos);
803 if (mov_read_default(c, pb, a) < 0)
805 } else if (a.size > 0)
806 url_fskip(pb, a.size);
809 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
810 st->codec->sample_rate= sc->time_scale;
813 /* special codec parameters handling */
814 switch (st->codec->codec_id) {
815 #ifdef CONFIG_H261_DECODER
818 #ifdef CONFIG_H263_DECODER
821 #ifdef CONFIG_MPEG4_DECODER
824 st->codec->width= 0; /* let decoder init width/height */
825 st->codec->height= 0;
827 #ifdef CONFIG_LIBFAAD
830 #ifdef CONFIG_VORBIS_DECODER
831 case CODEC_ID_VORBIS:
833 case CODEC_ID_MP3ON4:
834 st->codec->sample_rate= 0; /* let decoder init parameters properly */
836 #ifdef CONFIG_DV_DEMUXER
837 case CODEC_ID_DVAUDIO:
838 c->dv_fctx = av_alloc_format_context();
839 c->dv_demux = dv_init_demux(c->dv_fctx);
841 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
844 sc->dv_audio_container = 1;
845 st->codec->codec_id = CODEC_ID_PCM_S16LE;
848 /* no ifdef since parameters are always those */
849 case CODEC_ID_AMR_WB:
850 st->codec->sample_rate= 16000;
851 st->codec->channels= 1; /* really needed */
853 case CODEC_ID_AMR_NB:
854 st->codec->sample_rate= 8000;
855 st->codec->channels= 1; /* really needed */
859 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
860 st->need_parsing = AVSTREAM_PARSE_FULL;
862 case CODEC_ID_ADPCM_MS:
863 case CODEC_ID_ADPCM_IMA_WAV:
864 st->codec->block_align = sc->bytes_per_frame;
873 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
875 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
876 MOVStreamContext *sc = st->priv_data;
877 unsigned int i, entries;
879 get_byte(pb); /* version */
880 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
882 entries = get_be32(pb);
884 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
887 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
889 sc->sample_to_chunk_sz = entries;
890 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
891 if (!sc->sample_to_chunk)
893 for(i=0; i<entries; i++) {
894 sc->sample_to_chunk[i].first = get_be32(pb);
895 sc->sample_to_chunk[i].count = get_be32(pb);
896 sc->sample_to_chunk[i].id = get_be32(pb);
901 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
903 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
904 MOVStreamContext *sc = st->priv_data;
905 unsigned int i, entries;
907 get_byte(pb); /* version */
908 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
910 entries = get_be32(pb);
912 if(entries >= UINT_MAX / sizeof(int))
915 sc->keyframe_count = entries;
917 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
919 sc->keyframes = av_malloc(entries * sizeof(int));
922 for(i=0; i<entries; i++) {
923 sc->keyframes[i] = get_be32(pb);
924 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
929 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
931 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
932 MOVStreamContext *sc = st->priv_data;
933 unsigned int i, entries, sample_size;
935 get_byte(pb); /* version */
936 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
938 sample_size = get_be32(pb);
939 if (!sc->sample_size) /* do not overwrite value computed in stsd */
940 sc->sample_size = sample_size;
941 entries = get_be32(pb);
942 if(entries >= UINT_MAX / sizeof(int))
945 sc->sample_count = entries;
949 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
951 sc->sample_sizes = av_malloc(entries * sizeof(int));
952 if (!sc->sample_sizes)
954 for(i=0; i<entries; i++) {
955 sc->sample_sizes[i] = get_be32(pb);
956 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
961 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
963 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
964 MOVStreamContext *sc = st->priv_data;
965 unsigned int i, entries;
967 int64_t total_sample_count=0;
969 get_byte(pb); /* version */
970 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
971 entries = get_be32(pb);
972 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
975 sc->stts_count = entries;
976 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
979 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
983 for(i=0; i<entries; i++) {
987 sample_count=get_be32(pb);
988 sample_duration = get_be32(pb);
989 sc->stts_data[i].count= sample_count;
990 sc->stts_data[i].duration= sample_duration;
992 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
994 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
996 duration+=(int64_t)sample_duration*sample_count;
997 total_sample_count+=sample_count;
1000 st->nb_frames= total_sample_count;
1002 st->duration= duration;
1006 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1008 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1009 MOVStreamContext *sc = st->priv_data;
1010 unsigned int i, entries;
1012 get_byte(pb); /* version */
1013 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1014 entries = get_be32(pb);
1015 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1018 sc->ctts_count = entries;
1019 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1022 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1024 for(i=0; i<entries; i++) {
1025 int count =get_be32(pb);
1026 int duration =get_be32(pb);
1029 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1031 url_fskip(pb, 8 * (entries - i - 1));
1034 sc->ctts_data[i].count = count;
1035 sc->ctts_data[i].duration= duration;
1037 sc->time_rate= ff_gcd(sc->time_rate, duration);
1042 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1045 MOVStreamContext *sc;
1047 st = av_new_stream(c->fc, c->fc->nb_streams);
1049 sc = av_mallocz(sizeof(MOVStreamContext));
1056 st->codec->codec_type = CODEC_TYPE_DATA;
1057 st->start_time = 0; /* XXX: check */
1059 return mov_read_default(c, pb, atom);
1062 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1064 uint16_t str_size = get_be16(pb); /* string length */;
1066 get_be16(pb); /* skip language */
1067 get_buffer(pb, str, FFMIN(size, str_size));
1070 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1072 uint64_t end = url_ftell(pb) + atom.size;
1074 while (url_ftell(pb) + 8 < end) {
1075 uint32_t tag_size = get_be32(pb);
1076 uint32_t tag = get_le32(pb);
1077 uint64_t next = url_ftell(pb) + tag_size - 8;
1079 if (next > end) // stop if tag_size is wrong
1083 case MKTAG(0xa9,'n','a','m'):
1084 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1086 case MKTAG(0xa9,'w','r','t'):
1087 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1089 case MKTAG(0xa9,'c','p','y'):
1090 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1092 case MKTAG(0xa9,'i','n','f'):
1093 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1099 url_fseek(pb, next, SEEK_SET);
1105 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1107 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1108 int version = get_byte(pb);
1110 get_byte(pb); get_byte(pb);
1111 get_byte(pb); /* flags */
1113 MOV_TRACK_ENABLED 0x0001
1114 MOV_TRACK_IN_MOVIE 0x0002
1115 MOV_TRACK_IN_PREVIEW 0x0004
1116 MOV_TRACK_IN_POSTER 0x0008
1123 get_be32(pb); /* creation time */
1124 get_be32(pb); /* modification time */
1126 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1127 get_be32(pb); /* reserved */
1128 st->start_time = 0; /* check */
1129 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1130 get_be32(pb); /* reserved */
1131 get_be32(pb); /* reserved */
1133 get_be16(pb); /* layer */
1134 get_be16(pb); /* alternate group */
1135 get_be16(pb); /* volume */
1136 get_be16(pb); /* reserved */
1138 url_fskip(pb, 36); /* display matrix */
1140 /* those are fixed-point */
1141 get_be32(pb); /* track width */
1142 get_be32(pb); /* track height */
1147 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1148 /* like the files created with Adobe Premiere 5.0, for samples see */
1149 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1150 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1155 return 0; /* continue */
1156 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1157 url_fskip(pb, atom.size - 4);
1160 atom.type = get_le32(pb);
1163 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1164 url_fskip(pb, atom.size);
1167 err = mov_read_mdat(c, pb, atom);
1171 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1176 uint8_t *moov_data; /* uncompressed data */
1177 long cmov_len, moov_len;
1180 get_be32(pb); /* dcom atom */
1181 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1183 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1184 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1187 get_be32(pb); /* cmvd atom */
1188 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1190 moov_len = get_be32(pb); /* uncompressed size */
1191 cmov_len = atom.size - 6 * 4;
1193 cmov_data = av_malloc(cmov_len);
1196 moov_data = av_malloc(moov_len);
1201 get_buffer(pb, cmov_data, cmov_len);
1202 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1204 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1206 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1208 atom.size = moov_len;
1210 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1212 ret = mov_read_default(c, &ctx, atom);
1217 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1222 /* edit list atom */
1223 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1225 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1228 get_byte(pb); /* version */
1229 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1230 edit_count= sc->edit_count = get_be32(pb); /* entries */
1232 for(i=0; i<edit_count; i++){
1234 get_be32(pb); /* Track duration */
1235 time = get_be32(pb); /* Media time */
1236 get_be32(pb); /* Media rate */
1238 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1239 "a/v desync might occur, patch welcome\n");
1241 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1245 static const MOVParseTableEntry mov_default_parse_table[] = {
1247 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1248 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1249 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1250 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1251 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1252 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1253 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1254 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1255 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1256 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1257 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1258 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1259 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1260 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1261 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1262 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1263 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1264 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1265 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1266 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1267 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1268 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1269 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1270 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1271 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1272 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1273 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1274 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1275 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1276 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1277 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1278 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1279 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1283 /* XXX: is it sufficient ? */
1284 static int mov_probe(AVProbeData *p)
1286 unsigned int offset;
1290 /* check file header */
1293 /* ignore invalid offset */
1294 if ((offset + 8) > (unsigned int)p->buf_size)
1296 tag = AV_RL32(p->buf + offset + 4);
1298 /* check for obvious tags */
1299 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1300 case MKTAG( 'm', 'o', 'o', 'v' ):
1301 case MKTAG( 'm', 'd', 'a', 't' ):
1302 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1303 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1304 return AVPROBE_SCORE_MAX;
1305 /* those are more common words, so rate then a bit less */
1306 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1307 case MKTAG( 'w', 'i', 'd', 'e' ):
1308 case MKTAG( 'f', 'r', 'e', 'e' ):
1309 case MKTAG( 'j', 'u', 'n', 'k' ):
1310 case MKTAG( 'p', 'i', 'c', 't' ):
1311 return AVPROBE_SCORE_MAX - 5;
1312 case MKTAG( 'f', 't', 'y', 'p' ):
1313 case MKTAG( 's', 'k', 'i', 'p' ):
1314 case MKTAG( 'u', 'u', 'i', 'd' ):
1315 offset = AV_RB32(p->buf+offset) + offset;
1316 /* if we only find those cause probedata is too small at least rate them */
1317 score = AVPROBE_SCORE_MAX - 50;
1320 /* unrecognized tag */
1327 static void mov_build_index(MOVContext *mov, AVStream *st)
1329 MOVStreamContext *sc = st->priv_data;
1330 offset_t current_offset;
1331 int64_t current_dts = 0;
1332 unsigned int stts_index = 0;
1333 unsigned int stsc_index = 0;
1334 unsigned int stss_index = 0;
1337 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1338 sc->audio_cid == -2) {
1339 unsigned int current_sample = 0;
1340 unsigned int stts_sample = 0;
1341 unsigned int keyframe, sample_size;
1342 unsigned int distance = 0;
1344 st->nb_frames = sc->sample_count;
1345 for (i = 0; i < sc->chunk_count; i++) {
1346 current_offset = sc->chunk_offsets[i];
1347 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1348 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1350 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1351 if (current_sample >= sc->sample_count) {
1352 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1355 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1358 if (stss_index + 1 < sc->keyframe_count)
1361 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1362 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1363 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1364 current_offset, current_dts, sample_size, distance, keyframe);
1365 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1366 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1367 keyframe ? AVINDEX_KEYFRAME : 0);
1368 current_offset += sample_size;
1369 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1370 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1374 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1380 } else { /* read whole chunk */
1381 unsigned int chunk_samples, chunk_size, chunk_duration;
1382 unsigned int frames = 1;
1383 for (i = 0; i < sc->chunk_count; i++) {
1384 current_offset = sc->chunk_offsets[i];
1385 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1386 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1388 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1389 /* get chunk size */
1390 if (sc->sample_size > 1 ||
1391 st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1392 chunk_size = chunk_samples * sc->sample_size;
1393 else if (sc->samples_per_frame > 0 &&
1394 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1395 if (sc->samples_per_frame < 1024)
1396 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1398 chunk_size = sc->bytes_per_frame;
1399 frames = chunk_samples / sc->samples_per_frame;
1400 chunk_samples = sc->samples_per_frame;
1403 av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1406 for (j = 0; j < frames; j++) {
1407 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1408 /* get chunk duration */
1410 while (chunk_samples > 0) {
1411 if (chunk_samples < sc->stts_data[stts_index].count) {
1412 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1413 sc->stts_data[stts_index].count -= chunk_samples;
1416 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1417 chunk_samples -= sc->stts_data[stts_index].count;
1418 if (stts_index + 1 < sc->stts_count)
1422 current_offset += sc->bytes_per_frame;
1423 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1424 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1425 assert(chunk_duration % sc->time_rate == 0);
1426 current_dts += chunk_duration / sc->time_rate;
1431 /* adjust sample count to avindex entries */
1432 sc->sample_count = st->nb_index_entries;
1435 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1437 MOVContext *mov = s->priv_data;
1438 ByteIOContext *pb = s->pb;
1440 MOV_atom_t atom = { 0, 0, 0 };
1444 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1445 atom.size = url_fsize(pb);
1447 atom.size = INT64_MAX;
1449 /* check MOV header */
1450 err = mov_read_default(mov, pb, atom);
1451 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1452 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1453 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1456 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1458 for(i=0; i<s->nb_streams; i++) {
1459 AVStream *st = s->streams[i];
1460 MOVStreamContext *sc = st->priv_data;
1462 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1463 (!sc->sample_size && !sc->sample_count)){
1464 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1465 sc->sample_count = 0; //ignore track
1471 sc->time_scale= mov->time_scale;
1472 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1474 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1475 st->codec->frame_size = sc->stts_data[0].duration;
1477 if(st->duration != AV_NOPTS_VALUE){
1478 assert(st->duration % sc->time_rate == 0);
1479 st->duration /= sc->time_rate;
1482 mov_build_index(mov, st);
1485 for(i=0; i<s->nb_streams; i++) {
1486 MOVStreamContext *sc = s->streams[i]->priv_data;
1487 /* Do not need those anymore. */
1488 av_freep(&sc->chunk_offsets);
1489 av_freep(&sc->sample_to_chunk);
1490 av_freep(&sc->sample_sizes);
1491 av_freep(&sc->keyframes);
1492 av_freep(&sc->stts_data);
1497 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1499 MOVContext *mov = s->priv_data;
1500 MOVStreamContext *sc = 0;
1501 AVIndexEntry *sample = 0;
1502 int64_t best_dts = INT64_MAX;
1505 for (i = 0; i < s->nb_streams; i++) {
1506 AVStream *st = s->streams[i];
1507 MOVStreamContext *msc = st->priv_data;
1508 if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1509 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1510 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1511 AV_TIME_BASE, msc->time_scale);
1512 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1513 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1514 (!url_is_streamed(s->pb) &&
1515 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1516 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1517 sample = current_sample;
1525 /* must be done just before reading, to avoid infinite loop on sample */
1526 sc->current_sample++;
1527 if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1528 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1529 sc->ffindex, sample->pos);
1532 av_get_packet(s->pb, pkt, sample->size);
1533 #ifdef CONFIG_DV_DEMUXER
1534 if (mov->dv_demux && sc->dv_audio_container) {
1535 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1538 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1542 pkt->stream_index = sc->ffindex;
1543 pkt->dts = sample->timestamp;
1544 if (sc->ctts_data) {
1545 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1546 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1547 /* update ctts context */
1548 sc->sample_to_ctime_sample++;
1549 if (sc->sample_to_ctime_index < sc->ctts_count &&
1550 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1551 sc->sample_to_ctime_index++;
1552 sc->sample_to_ctime_sample = 0;
1555 pkt->pts = pkt->dts;
1557 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1558 pkt->pos = sample->pos;
1559 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1560 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1564 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1566 MOVStreamContext *sc = st->priv_data;
1567 int sample, time_sample;
1570 sample = av_index_search_timestamp(st, timestamp, flags);
1571 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1572 if (sample < 0) /* not sure what to do */
1574 sc->current_sample = sample;
1575 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1576 /* adjust ctts index */
1577 if (sc->ctts_data) {
1579 for (i = 0; i < sc->ctts_count; i++) {
1580 int next = time_sample + sc->ctts_data[i].count;
1581 if (next > sc->current_sample) {
1582 sc->sample_to_ctime_index = i;
1583 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1592 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1595 int64_t seek_timestamp, timestamp;
1599 if (stream_index >= s->nb_streams)
1602 st = s->streams[stream_index];
1603 sample = mov_seek_stream(st, sample_time, flags);
1607 /* adjust seek timestamp to found sample timestamp */
1608 seek_timestamp = st->index_entries[sample].timestamp;
1610 for (i = 0; i < s->nb_streams; i++) {
1612 if (stream_index == i || st->discard == AVDISCARD_ALL)
1615 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1616 mov_seek_stream(st, timestamp, flags);
1621 static int mov_read_close(AVFormatContext *s)
1624 MOVContext *mov = s->priv_data;
1625 for(i=0; i<s->nb_streams; i++) {
1626 MOVStreamContext *sc = s->streams[i]->priv_data;
1627 av_freep(&sc->ctts_data);
1630 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1631 av_freep(&mov->dv_fctx->streams[i]->codec);
1632 av_freep(&mov->dv_fctx->streams[i]);
1634 av_freep(&mov->dv_fctx);
1635 av_freep(&mov->dv_demux);
1640 AVInputFormat mov_demuxer = {
1641 "mov,mp4,m4a,3gp,3g2,mj2",
1642 "QuickTime/MPEG4/Motion JPEG 2000 format",