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 if((uint64_t)len > (1<<30))
296 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
297 if (!st->codec->extradata)
298 return AVERROR(ENOMEM);
299 get_buffer(pb, st->codec->extradata, len);
300 st->codec->extradata_size = len;
302 if ((*st->codec->extradata >> 3) == 29) {
303 st->codec->codec_id = CODEC_ID_MP3ON4;
310 /* this atom contains actual media data */
311 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
313 if(atom.size == 0) /* wrong one (MP4) */
317 return 1; /* found both, just go */
318 url_fskip(pb, atom.size);
319 return 0; /* now go for moov */
322 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
324 uint32_t type = get_le32(pb);
326 if (type != MKTAG('q','t',' ',' '))
328 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
329 get_be32(pb); /* minor version */
330 url_fskip(pb, atom.size - 8);
334 /* this atom should contain all header atoms */
335 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
337 if (mov_read_default(c, pb, atom) < 0)
339 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
340 /* so we don't parse the whole file if over a network */
343 return 1; /* found both, just go */
344 return 0; /* now go for mdat */
348 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
350 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
351 MOVStreamContext *sc = st->priv_data;
352 int version = get_byte(pb);
356 return 1; /* unsupported */
358 get_byte(pb); get_byte(pb);
359 get_byte(pb); /* flags */
365 get_be32(pb); /* creation time */
366 get_be32(pb); /* modification time */
369 sc->time_scale = get_be32(pb);
370 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
372 lang = get_be16(pb); /* language */
373 ff_mov_lang_to_iso639(lang, st->language);
374 get_be16(pb); /* quality */
379 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
381 int version = get_byte(pb); /* version */
382 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
388 get_be32(pb); /* creation time */
389 get_be32(pb); /* modification time */
391 c->time_scale = get_be32(pb); /* time scale */
393 dprintf(c->fc, "time scale = %i\n", c->time_scale);
395 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
396 get_be32(pb); /* preferred scale */
398 get_be16(pb); /* preferred volume */
400 url_fskip(pb, 10); /* reserved */
402 url_fskip(pb, 36); /* display matrix */
404 get_be32(pb); /* preview time */
405 get_be32(pb); /* preview duration */
406 get_be32(pb); /* poster time */
407 get_be32(pb); /* selection time */
408 get_be32(pb); /* selection duration */
409 get_be32(pb); /* current time */
410 get_be32(pb); /* next track ID */
415 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
417 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
419 if((uint64_t)atom.size > (1<<30))
422 // currently SVQ3 decoder expect full STSD header - so let's fake it
423 // this should be fixed and just SMI header should be passed
424 av_free(st->codec->extradata);
425 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
426 if (!st->codec->extradata)
427 return AVERROR(ENOMEM);
428 st->codec->extradata_size = 0x5a + atom.size;
429 memcpy(st->codec->extradata, "SVQ3", 4); // fake
430 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
431 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
435 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
437 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
438 int little_endian = get_be16(pb);
441 switch (st->codec->codec_id) {
442 case CODEC_ID_PCM_S24BE:
443 st->codec->codec_id = CODEC_ID_PCM_S24LE;
445 case CODEC_ID_PCM_S32BE:
446 st->codec->codec_id = CODEC_ID_PCM_S32LE;
455 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
456 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
458 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
459 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
461 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
463 buf= av_realloc(st->codec->extradata, size);
466 st->codec->extradata= buf;
467 buf+= st->codec->extradata_size;
468 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
469 AV_WB32( buf , atom.size + 8);
470 AV_WL32( buf + 4, atom.type);
471 get_buffer(pb, buf + 8, atom.size);
475 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
477 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
479 if((uint64_t)atom.size > (1<<30))
482 if (st->codec->codec_id == CODEC_ID_QDM2) {
483 // pass all frma atom to codec, needed at least for QDM2
484 av_free(st->codec->extradata);
485 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
486 if (!st->codec->extradata)
487 return AVERROR(ENOMEM);
488 st->codec->extradata_size = atom.size;
489 get_buffer(pb, st->codec->extradata, atom.size);
490 } else if (atom.size > 8) { /* to read frma, esds atoms */
491 if (mov_read_default(c, pb, atom) < 0)
494 url_fskip(pb, atom.size);
499 * This function reads atom content and puts data in extradata without tag
500 * nor size unlike mov_read_extradata.
502 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
504 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
506 if((uint64_t)atom.size > (1<<30))
509 av_free(st->codec->extradata);
510 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
511 if (!st->codec->extradata)
512 return AVERROR(ENOMEM);
513 st->codec->extradata_size = atom.size;
514 get_buffer(pb, st->codec->extradata, atom.size);
518 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
520 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
521 MOVStreamContext *sc = st->priv_data;
522 unsigned int i, entries;
524 get_byte(pb); /* version */
525 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
527 entries = get_be32(pb);
529 if(entries >= UINT_MAX/sizeof(int64_t))
532 sc->chunk_count = entries;
533 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
534 if (!sc->chunk_offsets)
536 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
537 for(i=0; i<entries; i++) {
538 sc->chunk_offsets[i] = get_be32(pb);
540 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
541 for(i=0; i<entries; i++) {
542 sc->chunk_offsets[i] = get_be64(pb);
550 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
552 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
553 MOVStreamContext *sc = st->priv_data;
554 int entries, frames_per_sample;
556 uint8_t codec_name[32];
558 /* for palette traversal */
559 unsigned int color_depth;
560 unsigned int color_start;
561 unsigned int color_count;
562 unsigned int color_end;
566 const uint8_t *color_table;
567 int j, pseudo_stream_id;
568 unsigned char r, g, b;
570 get_byte(pb); /* version */
571 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
573 entries = get_be32(pb);
575 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
577 MOV_atom_t a = { 0, 0, 0 };
578 offset_t start_pos = url_ftell(pb);
579 int size = get_be32(pb); /* size */
580 format = get_le32(pb); /* data format */
582 get_be32(pb); /* reserved */
583 get_be16(pb); /* reserved */
584 get_be16(pb); /* index */
586 if (st->codec->codec_tag &&
587 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
588 : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
590 /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
591 seperate AVStream but this needs a few changes in the mov demuxer, patch
593 url_fskip(pb, size - (url_ftell(pb) - start_pos));
596 sc->pseudo_stream_id= pseudo_stream_id;
598 st->codec->codec_tag = format;
599 id = codec_get_id(codec_movaudio_tags, format);
600 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
601 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
603 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
604 st->codec->codec_type = CODEC_TYPE_AUDIO;
605 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
606 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
607 id = codec_get_id(codec_movvideo_tags, format);
609 id = codec_get_id(codec_bmp_tags, format);
611 st->codec->codec_type = CODEC_TYPE_VIDEO;
612 else if(st->codec->codec_type == CODEC_TYPE_DATA){
613 id = codec_get_id(ff_codec_movsubtitle_tags, format);
615 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
619 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
620 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
621 (format >> 24) & 0xff, st->codec->codec_type);
623 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
624 st->codec->codec_id = id;
625 get_be16(pb); /* version */
626 get_be16(pb); /* revision level */
627 get_be32(pb); /* vendor */
628 get_be32(pb); /* temporal quality */
629 get_be32(pb); /* spatial quality */
631 st->codec->width = get_be16(pb); /* width */
632 st->codec->height = get_be16(pb); /* height */
634 get_be32(pb); /* horiz resolution */
635 get_be32(pb); /* vert resolution */
636 get_be32(pb); /* data size, always 0 */
637 frames_per_sample = get_be16(pb); /* frames per samples */
639 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
641 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
642 if (codec_name[0] <= 31) {
643 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
644 st->codec->codec_name[codec_name[0]] = 0;
647 st->codec->bits_per_sample = get_be16(pb); /* depth */
648 st->codec->color_table_id = get_be16(pb); /* colortable id */
650 /* figure out the palette situation */
651 color_depth = st->codec->bits_per_sample & 0x1F;
652 color_greyscale = st->codec->bits_per_sample & 0x20;
654 /* if the depth is 2, 4, or 8 bpp, file is palettized */
655 if ((color_depth == 2) || (color_depth == 4) ||
656 (color_depth == 8)) {
657 if (color_greyscale) {
658 /* compute the greyscale palette */
659 color_count = 1 << color_depth;
661 color_dec = 256 / (color_count - 1);
662 for (j = 0; j < color_count; j++) {
663 r = g = b = color_index;
664 c->palette_control.palette[j] =
665 (r << 16) | (g << 8) | (b);
666 color_index -= color_dec;
670 } else if (st->codec->color_table_id & 0x08) {
671 /* if flag bit 3 is set, use the default palette */
672 color_count = 1 << color_depth;
673 if (color_depth == 2)
674 color_table = ff_qt_default_palette_4;
675 else if (color_depth == 4)
676 color_table = ff_qt_default_palette_16;
678 color_table = ff_qt_default_palette_256;
680 for (j = 0; j < color_count; j++) {
681 r = color_table[j * 4 + 0];
682 g = color_table[j * 4 + 1];
683 b = color_table[j * 4 + 2];
684 c->palette_control.palette[j] =
685 (r << 16) | (g << 8) | (b);
688 /* load the palette from the file */
689 color_start = get_be32(pb);
690 color_count = get_be16(pb);
691 color_end = get_be16(pb);
692 if ((color_start <= 255) &&
693 (color_end <= 255)) {
694 for (j = color_start; j <= color_end; j++) {
695 /* each R, G, or B component is 16 bits;
696 * only use the top 8 bits; skip alpha bytes
706 c->palette_control.palette[j] =
707 (r << 16) | (g << 8) | (b);
711 st->codec->palctrl = &c->palette_control;
712 st->codec->palctrl->palette_changed = 1;
714 st->codec->palctrl = NULL;
715 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
717 uint16_t version = get_be16(pb);
719 st->codec->codec_id = id;
720 get_be16(pb); /* revision level */
721 get_be32(pb); /* vendor */
723 st->codec->channels = get_be16(pb); /* channel count */
724 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
725 st->codec->bits_per_sample = get_be16(pb); /* sample size */
727 sc->audio_cid = get_be16(pb);
728 get_be16(pb); /* packet size = 0 */
730 st->codec->sample_rate = ((get_be32(pb) >> 16));
732 switch (st->codec->codec_id) {
733 case CODEC_ID_PCM_S8:
734 case CODEC_ID_PCM_U8:
735 if (st->codec->bits_per_sample == 16)
736 st->codec->codec_id = CODEC_ID_PCM_S16BE;
738 case CODEC_ID_PCM_S16LE:
739 case CODEC_ID_PCM_S16BE:
740 if (st->codec->bits_per_sample == 8)
741 st->codec->codec_id = CODEC_ID_PCM_S8;
742 else if (st->codec->bits_per_sample == 24)
743 st->codec->codec_id = CODEC_ID_PCM_S24BE;
745 /* set values for old format before stsd version 1 appeared */
747 sc->samples_per_frame = 6;
748 sc->bytes_per_frame = 2*st->codec->channels;
751 sc->samples_per_frame = 6;
752 sc->bytes_per_frame = 1*st->codec->channels;
754 case CODEC_ID_ADPCM_IMA_QT:
755 sc->samples_per_frame = 64;
756 sc->bytes_per_frame = 34*st->codec->channels;
762 //Read QT version 1 fields. In version 0 these do not exist.
763 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
766 sc->samples_per_frame = get_be32(pb);
767 get_be32(pb); /* bytes per packet */
768 sc->bytes_per_frame = get_be32(pb);
769 get_be32(pb); /* bytes per sample */
770 } else if(version==2) {
771 get_be32(pb); /* sizeof struct only */
772 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
773 st->codec->channels = get_be32(pb);
774 get_be32(pb); /* always 0x7F000000 */
775 get_be32(pb); /* bits per channel if sound is uncompressed */
776 get_be32(pb); /* lcpm format specific flag */
777 get_be32(pb); /* bytes per audio packet if constant */
778 get_be32(pb); /* lpcm frames per audio packet if constant */
782 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
783 if (bits_per_sample) {
784 st->codec->bits_per_sample = bits_per_sample;
785 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
787 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
788 st->codec->codec_id= id;
790 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
791 url_fskip(pb, size - (url_ftell(pb) - start_pos));
793 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
794 a.size = size - (url_ftell(pb) - start_pos);
796 if (mov_read_default(c, pb, a) < 0)
798 } else if (a.size > 0)
799 url_fskip(pb, a.size);
802 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
803 st->codec->sample_rate= sc->time_scale;
806 /* special codec parameters handling */
807 switch (st->codec->codec_id) {
808 #ifdef CONFIG_H261_DECODER
811 #ifdef CONFIG_H263_DECODER
814 #ifdef CONFIG_MPEG4_DECODER
817 st->codec->width= 0; /* let decoder init width/height */
818 st->codec->height= 0;
820 #ifdef CONFIG_LIBFAAD
823 #ifdef CONFIG_VORBIS_DECODER
824 case CODEC_ID_VORBIS:
826 case CODEC_ID_MP3ON4:
827 st->codec->sample_rate= 0; /* let decoder init parameters properly */
829 #ifdef CONFIG_DV_DEMUXER
830 case CODEC_ID_DVAUDIO:
831 c->dv_fctx = av_alloc_format_context();
832 c->dv_demux = dv_init_demux(c->dv_fctx);
834 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
837 sc->dv_audio_container = 1;
838 st->codec->codec_id = CODEC_ID_PCM_S16LE;
841 /* no ifdef since parameters are always those */
842 case CODEC_ID_AMR_WB:
843 st->codec->sample_rate= 16000;
844 st->codec->channels= 1; /* really needed */
846 case CODEC_ID_AMR_NB:
847 st->codec->sample_rate= 8000;
848 st->codec->channels= 1; /* really needed */
852 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
853 st->need_parsing = AVSTREAM_PARSE_FULL;
855 case CODEC_ID_ADPCM_MS:
856 case CODEC_ID_ADPCM_IMA_WAV:
857 st->codec->block_align = sc->bytes_per_frame;
866 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
868 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
869 MOVStreamContext *sc = st->priv_data;
870 unsigned int i, entries;
872 get_byte(pb); /* version */
873 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
875 entries = get_be32(pb);
877 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
880 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
882 sc->sample_to_chunk_sz = entries;
883 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
884 if (!sc->sample_to_chunk)
886 for(i=0; i<entries; i++) {
887 sc->sample_to_chunk[i].first = get_be32(pb);
888 sc->sample_to_chunk[i].count = get_be32(pb);
889 sc->sample_to_chunk[i].id = get_be32(pb);
894 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
896 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
897 MOVStreamContext *sc = st->priv_data;
898 unsigned int i, entries;
900 get_byte(pb); /* version */
901 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
903 entries = get_be32(pb);
905 if(entries >= UINT_MAX / sizeof(int))
908 sc->keyframe_count = entries;
910 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
912 sc->keyframes = av_malloc(entries * sizeof(int));
915 for(i=0; i<entries; i++) {
916 sc->keyframes[i] = get_be32(pb);
917 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
922 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
924 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
925 MOVStreamContext *sc = st->priv_data;
926 unsigned int i, entries, sample_size;
928 get_byte(pb); /* version */
929 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
931 sample_size = get_be32(pb);
932 if (!sc->sample_size) /* do not overwrite value computed in stsd */
933 sc->sample_size = sample_size;
934 entries = get_be32(pb);
935 if(entries >= UINT_MAX / sizeof(int))
938 sc->sample_count = entries;
942 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
944 sc->sample_sizes = av_malloc(entries * sizeof(int));
945 if (!sc->sample_sizes)
947 for(i=0; i<entries; i++) {
948 sc->sample_sizes[i] = get_be32(pb);
949 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
954 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
956 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
957 MOVStreamContext *sc = st->priv_data;
958 unsigned int i, entries;
960 int64_t total_sample_count=0;
962 get_byte(pb); /* version */
963 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
964 entries = get_be32(pb);
965 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
968 sc->stts_count = entries;
969 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
972 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
976 for(i=0; i<entries; i++) {
980 sample_count=get_be32(pb);
981 sample_duration = get_be32(pb);
982 sc->stts_data[i].count= sample_count;
983 sc->stts_data[i].duration= sample_duration;
985 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
987 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
989 duration+=(int64_t)sample_duration*sample_count;
990 total_sample_count+=sample_count;
993 st->nb_frames= total_sample_count;
995 st->duration= duration;
999 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1001 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1002 MOVStreamContext *sc = st->priv_data;
1003 unsigned int i, entries;
1005 get_byte(pb); /* version */
1006 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1007 entries = get_be32(pb);
1008 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1011 sc->ctts_count = entries;
1012 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1015 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1017 for(i=0; i<entries; i++) {
1018 int count =get_be32(pb);
1019 int duration =get_be32(pb);
1022 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1024 url_fskip(pb, 8 * (entries - i - 1));
1027 sc->ctts_data[i].count = count;
1028 sc->ctts_data[i].duration= duration;
1030 sc->time_rate= ff_gcd(sc->time_rate, duration);
1035 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1038 MOVStreamContext *sc;
1040 st = av_new_stream(c->fc, c->fc->nb_streams);
1042 sc = av_mallocz(sizeof(MOVStreamContext));
1049 st->codec->codec_type = CODEC_TYPE_DATA;
1050 st->start_time = 0; /* XXX: check */
1052 return mov_read_default(c, pb, atom);
1055 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1057 uint16_t str_size = get_be16(pb); /* string length */;
1059 get_be16(pb); /* skip language */
1060 get_buffer(pb, str, FFMIN(size, str_size));
1063 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1065 uint64_t end = url_ftell(pb) + atom.size;
1067 while (url_ftell(pb) + 8 < end) {
1068 uint32_t tag_size = get_be32(pb);
1069 uint32_t tag = get_le32(pb);
1070 uint64_t next = url_ftell(pb) + tag_size - 8;
1072 if (next > end) // stop if tag_size is wrong
1076 case MKTAG(0xa9,'n','a','m'):
1077 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1079 case MKTAG(0xa9,'w','r','t'):
1080 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1082 case MKTAG(0xa9,'c','p','y'):
1083 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1085 case MKTAG(0xa9,'i','n','f'):
1086 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1092 url_fseek(pb, next, SEEK_SET);
1098 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1100 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1101 int version = get_byte(pb);
1103 get_byte(pb); get_byte(pb);
1104 get_byte(pb); /* flags */
1106 MOV_TRACK_ENABLED 0x0001
1107 MOV_TRACK_IN_MOVIE 0x0002
1108 MOV_TRACK_IN_PREVIEW 0x0004
1109 MOV_TRACK_IN_POSTER 0x0008
1116 get_be32(pb); /* creation time */
1117 get_be32(pb); /* modification time */
1119 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1120 get_be32(pb); /* reserved */
1121 st->start_time = 0; /* check */
1122 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1123 get_be32(pb); /* reserved */
1124 get_be32(pb); /* reserved */
1126 get_be16(pb); /* layer */
1127 get_be16(pb); /* alternate group */
1128 get_be16(pb); /* volume */
1129 get_be16(pb); /* reserved */
1131 url_fskip(pb, 36); /* display matrix */
1133 /* those are fixed-point */
1134 get_be32(pb); /* track width */
1135 get_be32(pb); /* track height */
1140 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1141 /* like the files created with Adobe Premiere 5.0, for samples see */
1142 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1143 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1148 return 0; /* continue */
1149 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1150 url_fskip(pb, atom.size - 4);
1153 atom.type = get_le32(pb);
1156 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1157 url_fskip(pb, atom.size);
1160 err = mov_read_mdat(c, pb, atom);
1164 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1169 uint8_t *moov_data; /* uncompressed data */
1170 long cmov_len, moov_len;
1173 get_be32(pb); /* dcom atom */
1174 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1176 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1177 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1180 get_be32(pb); /* cmvd atom */
1181 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1183 moov_len = get_be32(pb); /* uncompressed size */
1184 cmov_len = atom.size - 6 * 4;
1186 cmov_data = av_malloc(cmov_len);
1189 moov_data = av_malloc(moov_len);
1194 get_buffer(pb, cmov_data, cmov_len);
1195 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1197 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1199 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1201 atom.size = moov_len;
1203 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1205 ret = mov_read_default(c, &ctx, atom);
1210 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1215 /* edit list atom */
1216 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1218 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1221 get_byte(pb); /* version */
1222 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1223 edit_count= sc->edit_count = get_be32(pb); /* entries */
1225 for(i=0; i<edit_count; i++){
1227 get_be32(pb); /* Track duration */
1228 time = get_be32(pb); /* Media time */
1229 get_be32(pb); /* Media rate */
1231 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1232 "a/v desync might occur, patch welcome\n");
1234 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1238 static const MOVParseTableEntry mov_default_parse_table[] = {
1240 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1241 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1242 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1243 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1244 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1245 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1246 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1247 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1248 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1249 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1250 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1251 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1252 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1253 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1254 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1255 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1256 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1257 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1258 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1259 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1260 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1261 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1262 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1263 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1264 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1265 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1266 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1267 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1268 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1269 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1270 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1271 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1272 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1276 /* XXX: is it sufficient ? */
1277 static int mov_probe(AVProbeData *p)
1279 unsigned int offset;
1283 /* check file header */
1286 /* ignore invalid offset */
1287 if ((offset + 8) > (unsigned int)p->buf_size)
1289 tag = AV_RL32(p->buf + offset + 4);
1291 /* check for obvious tags */
1292 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1293 case MKTAG( 'm', 'o', 'o', 'v' ):
1294 case MKTAG( 'm', 'd', 'a', 't' ):
1295 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1296 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1297 return AVPROBE_SCORE_MAX;
1298 /* those are more common words, so rate then a bit less */
1299 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1300 case MKTAG( 'w', 'i', 'd', 'e' ):
1301 case MKTAG( 'f', 'r', 'e', 'e' ):
1302 case MKTAG( 'j', 'u', 'n', 'k' ):
1303 case MKTAG( 'p', 'i', 'c', 't' ):
1304 return AVPROBE_SCORE_MAX - 5;
1305 case MKTAG( 'f', 't', 'y', 'p' ):
1306 case MKTAG( 's', 'k', 'i', 'p' ):
1307 case MKTAG( 'u', 'u', 'i', 'd' ):
1308 offset = AV_RB32(p->buf+offset) + offset;
1309 /* if we only find those cause probedata is too small at least rate them */
1310 score = AVPROBE_SCORE_MAX - 50;
1313 /* unrecognized tag */
1320 static void mov_build_index(MOVContext *mov, AVStream *st)
1322 MOVStreamContext *sc = st->priv_data;
1323 offset_t current_offset;
1324 int64_t current_dts = 0;
1325 unsigned int stts_index = 0;
1326 unsigned int stsc_index = 0;
1327 unsigned int stss_index = 0;
1330 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1331 sc->audio_cid == -2) {
1332 unsigned int current_sample = 0;
1333 unsigned int stts_sample = 0;
1334 unsigned int keyframe, sample_size;
1335 unsigned int distance = 0;
1337 st->nb_frames = sc->sample_count;
1338 for (i = 0; i < sc->chunk_count; i++) {
1339 current_offset = sc->chunk_offsets[i];
1340 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1341 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1343 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1344 if (current_sample >= sc->sample_count) {
1345 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1348 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1351 if (stss_index + 1 < sc->keyframe_count)
1354 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1355 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1356 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1357 current_offset, current_dts, sample_size, distance, keyframe);
1358 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1359 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1360 keyframe ? AVINDEX_KEYFRAME : 0);
1361 current_offset += sample_size;
1362 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1363 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1367 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1373 } else { /* read whole chunk */
1374 unsigned int chunk_samples, chunk_size, chunk_duration;
1375 unsigned int frames = 1;
1376 for (i = 0; i < sc->chunk_count; i++) {
1377 current_offset = sc->chunk_offsets[i];
1378 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1379 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1381 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1382 /* get chunk size, beware of alaw/ulaw/mace */
1383 if (sc->samples_per_frame > 0 &&
1384 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1385 if (sc->samples_per_frame < 1024)
1386 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1388 chunk_size = sc->bytes_per_frame;
1389 frames = chunk_samples / sc->samples_per_frame;
1390 chunk_samples = sc->samples_per_frame;
1392 } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
1393 chunk_size = chunk_samples * sc->sample_size;
1395 av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1398 for (j = 0; j < frames; j++) {
1399 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1400 /* get chunk duration */
1402 while (chunk_samples > 0) {
1403 if (chunk_samples < sc->stts_data[stts_index].count) {
1404 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1405 sc->stts_data[stts_index].count -= chunk_samples;
1408 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1409 chunk_samples -= sc->stts_data[stts_index].count;
1410 if (stts_index + 1 < sc->stts_count)
1414 current_offset += sc->bytes_per_frame;
1415 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1416 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1417 assert(chunk_duration % sc->time_rate == 0);
1418 current_dts += chunk_duration / sc->time_rate;
1423 /* adjust sample count to avindex entries */
1424 sc->sample_count = st->nb_index_entries;
1427 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1429 MOVContext *mov = s->priv_data;
1430 ByteIOContext *pb = s->pb;
1432 MOV_atom_t atom = { 0, 0, 0 };
1436 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1437 atom.size = url_fsize(pb);
1439 atom.size = INT64_MAX;
1441 /* check MOV header */
1442 err = mov_read_default(mov, pb, atom);
1443 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1444 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1445 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1448 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1450 for(i=0; i<s->nb_streams; i++) {
1451 AVStream *st = s->streams[i];
1452 MOVStreamContext *sc = st->priv_data;
1454 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1455 (!sc->sample_size && !sc->sample_count)){
1456 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1457 sc->sample_count = 0; //ignore track
1463 sc->time_scale= mov->time_scale;
1464 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1466 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1467 st->codec->frame_size = sc->stts_data[0].duration;
1469 if(st->duration != AV_NOPTS_VALUE){
1470 assert(st->duration % sc->time_rate == 0);
1471 st->duration /= sc->time_rate;
1474 mov_build_index(mov, st);
1477 for(i=0; i<s->nb_streams; i++) {
1478 MOVStreamContext *sc = s->streams[i]->priv_data;
1479 /* Do not need those anymore. */
1480 av_freep(&sc->chunk_offsets);
1481 av_freep(&sc->sample_to_chunk);
1482 av_freep(&sc->sample_sizes);
1483 av_freep(&sc->keyframes);
1484 av_freep(&sc->stts_data);
1489 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1491 MOVContext *mov = s->priv_data;
1492 MOVStreamContext *sc = 0;
1493 AVIndexEntry *sample = 0;
1494 int64_t best_dts = INT64_MAX;
1497 for (i = 0; i < s->nb_streams; i++) {
1498 AVStream *st = s->streams[i];
1499 MOVStreamContext *msc = st->priv_data;
1500 if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1501 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1502 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1503 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",
1521 sc->ffindex, sample->pos);
1524 av_get_packet(s->pb, pkt, sample->size);
1525 #ifdef CONFIG_DV_DEMUXER
1526 if (mov->dv_demux && sc->dv_audio_container) {
1527 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1530 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1534 pkt->stream_index = sc->ffindex;
1535 pkt->dts = sample->timestamp;
1536 if (sc->ctts_data) {
1537 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1538 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1539 /* update ctts context */
1540 sc->sample_to_ctime_sample++;
1541 if (sc->sample_to_ctime_index < sc->ctts_count &&
1542 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1543 sc->sample_to_ctime_index++;
1544 sc->sample_to_ctime_sample = 0;
1547 pkt->pts = pkt->dts;
1549 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1550 pkt->pos = sample->pos;
1551 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1552 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1556 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1558 MOVStreamContext *sc = st->priv_data;
1559 int sample, time_sample;
1562 sample = av_index_search_timestamp(st, timestamp, flags);
1563 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1564 if (sample < 0) /* not sure what to do */
1566 sc->current_sample = sample;
1567 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1568 /* adjust ctts index */
1569 if (sc->ctts_data) {
1571 for (i = 0; i < sc->ctts_count; i++) {
1572 int next = time_sample + sc->ctts_data[i].count;
1573 if (next > sc->current_sample) {
1574 sc->sample_to_ctime_index = i;
1575 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1584 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1587 int64_t seek_timestamp, timestamp;
1591 if (stream_index >= s->nb_streams)
1594 st = s->streams[stream_index];
1595 sample = mov_seek_stream(st, sample_time, flags);
1599 /* adjust seek timestamp to found sample timestamp */
1600 seek_timestamp = st->index_entries[sample].timestamp;
1602 for (i = 0; i < s->nb_streams; i++) {
1604 if (stream_index == i || st->discard == AVDISCARD_ALL)
1607 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1608 mov_seek_stream(st, timestamp, flags);
1613 static int mov_read_close(AVFormatContext *s)
1616 MOVContext *mov = s->priv_data;
1617 for(i=0; i<s->nb_streams; i++) {
1618 MOVStreamContext *sc = s->streams[i]->priv_data;
1619 av_freep(&sc->ctts_data);
1622 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1623 av_freep(&mov->dv_fctx->streams[i]->codec);
1624 av_freep(&mov->dv_fctx->streams[i]);
1626 av_freep(&mov->dv_fctx);
1627 av_freep(&mov->dv_demux);
1632 AVInputFormat mov_demuxer = {
1633 "mov,mp4,m4a,3gp,3g2,mj2",
1634 "QuickTime/MPEG4/Motion JPEG 2000 format",