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
80 int64_t size; /* total size (excluding the size and type fields) */
83 struct MOVParseTableEntry;
85 typedef struct MOVStreamContext {
87 int ffindex; /* the ffmpeg stream id */
89 unsigned int chunk_count;
90 int64_t *chunk_offsets;
91 unsigned int stts_count;
92 MOV_stts_t *stts_data;
93 unsigned int ctts_count;
94 MOV_stts_t *ctts_data;
95 unsigned int edit_count; /* number of 'edit' (elst atom) */
96 unsigned int sample_to_chunk_sz;
97 MOV_stsc_t *sample_to_chunk;
98 int sample_to_ctime_index;
99 int sample_to_ctime_sample;
100 unsigned int sample_size;
101 unsigned int sample_count;
103 unsigned int keyframe_count;
108 unsigned int bytes_per_frame;
109 unsigned int samples_per_frame;
110 int dv_audio_container;
111 int pseudo_stream_id;
112 int16_t audio_cid; ///< stsd audio compression id
113 unsigned drefs_count;
118 typedef struct MOVContext {
121 int64_t duration; /* duration of the longest track */
122 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
123 int found_mdat; /* we suppose we have enough data to read the file */
124 AVPaletteControl palette_control;
125 DVDemuxContext *dv_demux;
126 AVFormatContext *dv_fctx;
127 int isom; /* 1 if file is ISO Media (mp4/3gp) */
131 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
133 /* those functions parse an atom */
135 1: found what I wanted, exit
136 0: continue to parse next atom
137 -1: error occured, exit
139 /* links atom IDs to parse functions */
140 typedef struct MOVParseTableEntry {
142 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143 } MOVParseTableEntry;
145 static const MOVParseTableEntry mov_default_parse_table[];
147 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
149 int64_t total_size = 0;
154 a.offset = atom.offset;
157 atom.size = INT64_MAX;
158 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
162 a.size = get_be32(pb);
163 a.type = get_le32(pb);
167 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
168 a.type, (char*)&a.type, a.size, atom.size, total_size);
169 if (a.size == 1) { /* 64 bit extended size */
170 a.size = get_be64(pb) - 8;
175 a.size = atom.size - total_size;
182 a.size = FFMIN(a.size, atom.size - total_size);
184 for (i = 0; mov_default_parse_table[i].type != 0
185 && mov_default_parse_table[i].type != a.type; i++)
188 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
189 url_fskip(pb, a.size);
191 offset_t start_pos = url_ftell(pb);
193 err = mov_default_parse_table[i].parse(c, pb, a);
194 if (c->found_moov && c->found_mdat)
196 left = a.size - url_ftell(pb) + start_pos;
197 if (left > 0) /* skip garbage at atom end */
202 total_size += a.size;
205 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
206 url_fskip(pb, atom.size - total_size);
212 static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
214 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
215 MOVStreamContext *sc = st->priv_data;
218 get_be32(pb); // version + flags
219 entries = get_be32(pb);
220 if (entries >= UINT_MAX / sizeof(*sc->drefs))
222 sc->drefs_count = entries;
223 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
225 for (i = 0; i < sc->drefs_count; i++) {
226 MOV_dref_t *dref = &sc->drefs[i];
227 uint32_t size = get_be32(pb);
228 offset_t next = url_ftell(pb) + size - 4;
230 dref->type = get_le32(pb);
231 get_be32(pb); // version + flags
232 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
234 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
235 /* macintosh alias record */
236 uint16_t volume_len, len;
242 volume_len = get_byte(pb);
243 volume_len = FFMIN(volume_len, 27);
244 get_buffer(pb, volume, 27);
245 volume[volume_len] = 0;
246 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
250 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
253 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
256 if (type == 2) { // absolute path
258 dref->path = av_mallocz(len+1);
260 return AVERROR(ENOMEM);
261 get_buffer(pb, dref->path, len);
262 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
264 memmove(dref->path, dref->path+volume_len, len);
267 for (j = 0; j < len; j++)
268 if (dref->path[j] == ':')
270 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
275 url_fseek(pb, next, SEEK_SET);
280 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
282 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
286 get_byte(pb); /* version */
287 get_be24(pb); /* flags */
290 ctype = get_le32(pb);
291 type = get_le32(pb); /* component subtype */
293 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
294 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
295 dprintf(c->fc, "stype= %c%c%c%c\n",
296 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
299 if(type == MKTAG('v', 'i', 'd', 'e'))
300 st->codec->codec_type = CODEC_TYPE_VIDEO;
301 else if(type == MKTAG('s', 'o', 'u', 'n'))
302 st->codec->codec_type = CODEC_TYPE_AUDIO;
303 else if(type == MKTAG('m', '1', 'a', ' '))
304 st->codec->codec_id = CODEC_ID_MP2;
305 else if(type == MKTAG('s', 'u', 'b', 'p')) {
306 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
308 get_be32(pb); /* component manufacture */
309 get_be32(pb); /* component flags */
310 get_be32(pb); /* component flags mask */
313 return 0; /* nothing left to read */
315 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
319 static int mp4_read_descr_len(ByteIOContext *pb)
324 int c = get_byte(pb);
325 len = (len << 7) | (c & 0x7f);
332 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
336 len = mp4_read_descr_len(pb);
337 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
341 #define MP4ESDescrTag 0x03
342 #define MP4DecConfigDescrTag 0x04
343 #define MP4DecSpecificDescrTag 0x05
345 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
347 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
350 get_be32(pb); /* version + flags */
351 len = mp4_read_descr(c, pb, &tag);
352 if (tag == MP4ESDescrTag) {
353 get_be16(pb); /* ID */
354 get_byte(pb); /* priority */
356 get_be16(pb); /* ID */
358 len = mp4_read_descr(c, pb, &tag);
359 if (tag == MP4DecConfigDescrTag) {
360 int object_type_id = get_byte(pb);
361 get_byte(pb); /* stream type */
362 get_be24(pb); /* buffer size db */
363 get_be32(pb); /* max bitrate */
364 get_be32(pb); /* avg bitrate */
366 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
367 dprintf(c->fc, "esds object type id %d\n", object_type_id);
368 len = mp4_read_descr(c, pb, &tag);
369 if (tag == MP4DecSpecificDescrTag) {
370 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
371 if((uint64_t)len > (1<<30))
373 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
374 if (!st->codec->extradata)
375 return AVERROR(ENOMEM);
376 get_buffer(pb, st->codec->extradata, len);
377 st->codec->extradata_size = len;
379 if ((*st->codec->extradata >> 3) == 29) {
380 st->codec->codec_id = CODEC_ID_MP3ON4;
387 /* this atom contains actual media data */
388 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
390 if(atom.size == 0) /* wrong one (MP4) */
394 return 1; /* found both, just go */
395 url_fskip(pb, atom.size);
396 return 0; /* now go for moov */
399 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
401 uint32_t type = get_le32(pb);
403 if (type != MKTAG('q','t',' ',' '))
405 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
406 get_be32(pb); /* minor version */
407 url_fskip(pb, atom.size - 8);
411 /* this atom should contain all header atoms */
412 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
414 if (mov_read_default(c, pb, atom) < 0)
416 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
417 /* so we don't parse the whole file if over a network */
420 return 1; /* found both, just go */
421 return 0; /* now go for mdat */
425 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
427 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
428 MOVStreamContext *sc = st->priv_data;
429 int version = get_byte(pb);
433 return 1; /* unsupported */
435 get_be24(pb); /* flags */
440 get_be32(pb); /* creation time */
441 get_be32(pb); /* modification time */
444 sc->time_scale = get_be32(pb);
445 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
447 lang = get_be16(pb); /* language */
448 ff_mov_lang_to_iso639(lang, st->language);
449 get_be16(pb); /* quality */
454 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
456 int version = get_byte(pb); /* version */
457 get_be24(pb); /* flags */
463 get_be32(pb); /* creation time */
464 get_be32(pb); /* modification time */
466 c->time_scale = get_be32(pb); /* time scale */
468 dprintf(c->fc, "time scale = %i\n", c->time_scale);
470 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
471 get_be32(pb); /* preferred scale */
473 get_be16(pb); /* preferred volume */
475 url_fskip(pb, 10); /* reserved */
477 url_fskip(pb, 36); /* display matrix */
479 get_be32(pb); /* preview time */
480 get_be32(pb); /* preview duration */
481 get_be32(pb); /* poster time */
482 get_be32(pb); /* selection time */
483 get_be32(pb); /* selection duration */
484 get_be32(pb); /* current time */
485 get_be32(pb); /* next track ID */
490 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
492 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
494 if((uint64_t)atom.size > (1<<30))
497 // currently SVQ3 decoder expect full STSD header - so let's fake it
498 // this should be fixed and just SMI header should be passed
499 av_free(st->codec->extradata);
500 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
501 if (!st->codec->extradata)
502 return AVERROR(ENOMEM);
503 st->codec->extradata_size = 0x5a + atom.size;
504 memcpy(st->codec->extradata, "SVQ3", 4); // fake
505 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
506 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
510 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
512 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
513 int little_endian = get_be16(pb);
516 switch (st->codec->codec_id) {
517 case CODEC_ID_PCM_S24BE:
518 st->codec->codec_id = CODEC_ID_PCM_S24LE;
520 case CODEC_ID_PCM_S32BE:
521 st->codec->codec_id = CODEC_ID_PCM_S32LE;
530 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
531 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
533 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
534 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
536 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
538 buf= av_realloc(st->codec->extradata, size);
541 st->codec->extradata= buf;
542 buf+= st->codec->extradata_size;
543 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
544 AV_WB32( buf , atom.size + 8);
545 AV_WL32( buf + 4, atom.type);
546 get_buffer(pb, buf + 8, atom.size);
550 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
552 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
554 if((uint64_t)atom.size > (1<<30))
557 if (st->codec->codec_id == CODEC_ID_QDM2) {
558 // pass all frma atom to codec, needed at least for QDM2
559 av_free(st->codec->extradata);
560 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
561 if (!st->codec->extradata)
562 return AVERROR(ENOMEM);
563 st->codec->extradata_size = atom.size;
564 get_buffer(pb, st->codec->extradata, atom.size);
565 } else if (atom.size > 8) { /* to read frma, esds atoms */
566 if (mov_read_default(c, pb, atom) < 0)
569 url_fskip(pb, atom.size);
574 * This function reads atom content and puts data in extradata without tag
575 * nor size unlike mov_read_extradata.
577 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
579 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
581 if((uint64_t)atom.size > (1<<30))
584 av_free(st->codec->extradata);
585 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
586 if (!st->codec->extradata)
587 return AVERROR(ENOMEM);
588 st->codec->extradata_size = atom.size;
589 get_buffer(pb, st->codec->extradata, atom.size);
593 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
595 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
596 MOVStreamContext *sc = st->priv_data;
597 unsigned int i, entries;
599 get_byte(pb); /* version */
600 get_be24(pb); /* flags */
602 entries = get_be32(pb);
604 if(entries >= UINT_MAX/sizeof(int64_t))
607 sc->chunk_count = entries;
608 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
609 if (!sc->chunk_offsets)
611 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
612 for(i=0; i<entries; i++) {
613 sc->chunk_offsets[i] = get_be32(pb);
615 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
616 for(i=0; i<entries; i++) {
617 sc->chunk_offsets[i] = get_be64(pb);
625 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
627 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
628 MOVStreamContext *sc = st->priv_data;
629 int entries, frames_per_sample;
631 uint8_t codec_name[32];
633 /* for palette traversal */
634 unsigned int color_depth;
635 unsigned int color_start;
636 unsigned int color_count;
637 unsigned int color_end;
641 const uint8_t *color_table;
642 int j, pseudo_stream_id;
643 unsigned char r, g, b;
645 get_byte(pb); /* version */
646 get_be24(pb); /* flags */
648 entries = get_be32(pb);
650 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
653 MOV_atom_t a = { 0, 0, 0 };
654 offset_t start_pos = url_ftell(pb);
655 int size = get_be32(pb); /* size */
656 format = get_le32(pb); /* data format */
658 get_be32(pb); /* reserved */
659 get_be16(pb); /* reserved */
660 dref_id = get_be16(pb);
662 if (st->codec->codec_tag &&
663 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
664 : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
666 /* Multiple fourcc, we skip JPEG. This is not correct, we should
667 * export it as a separate AVStream but this needs a few changes
668 * in the MOV demuxer, patch welcome. */
669 url_fskip(pb, size - (url_ftell(pb) - start_pos));
672 sc->pseudo_stream_id= pseudo_stream_id;
673 sc->dref_id= dref_id;
675 st->codec->codec_tag = format;
676 id = codec_get_id(codec_movaudio_tags, format);
677 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
678 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
680 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
681 st->codec->codec_type = CODEC_TYPE_AUDIO;
682 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
683 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
684 id = codec_get_id(codec_movvideo_tags, format);
686 id = codec_get_id(codec_bmp_tags, format);
688 st->codec->codec_type = CODEC_TYPE_VIDEO;
689 else if(st->codec->codec_type == CODEC_TYPE_DATA){
690 id = codec_get_id(ff_codec_movsubtitle_tags, format);
692 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
696 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
697 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
698 (format >> 24) & 0xff, st->codec->codec_type);
700 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
701 st->codec->codec_id = id;
702 get_be16(pb); /* version */
703 get_be16(pb); /* revision level */
704 get_be32(pb); /* vendor */
705 get_be32(pb); /* temporal quality */
706 get_be32(pb); /* spatial quality */
708 st->codec->width = get_be16(pb); /* width */
709 st->codec->height = get_be16(pb); /* height */
711 get_be32(pb); /* horiz resolution */
712 get_be32(pb); /* vert resolution */
713 get_be32(pb); /* data size, always 0 */
714 frames_per_sample = get_be16(pb); /* frames per samples */
716 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
718 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
719 if (codec_name[0] <= 31) {
720 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
721 st->codec->codec_name[codec_name[0]] = 0;
724 st->codec->bits_per_sample = get_be16(pb); /* depth */
725 st->codec->color_table_id = get_be16(pb); /* colortable id */
726 dprintf(c->fc, "depth %d, ctab id %d\n",
727 st->codec->bits_per_sample, st->codec->color_table_id);
728 /* figure out the palette situation */
729 color_depth = st->codec->bits_per_sample & 0x1F;
730 color_greyscale = st->codec->bits_per_sample & 0x20;
732 /* if the depth is 2, 4, or 8 bpp, file is palettized */
733 if ((color_depth == 2) || (color_depth == 4) ||
734 (color_depth == 8)) {
735 if (color_greyscale) {
736 /* compute the greyscale palette */
737 st->codec->bits_per_sample = color_depth;
738 color_count = 1 << color_depth;
740 color_dec = 256 / (color_count - 1);
741 for (j = 0; j < color_count; j++) {
742 r = g = b = color_index;
743 c->palette_control.palette[j] =
744 (r << 16) | (g << 8) | (b);
745 color_index -= color_dec;
749 } else if (st->codec->color_table_id & 0x08) {
750 /* if flag bit 3 is set, use the default palette */
751 color_count = 1 << color_depth;
752 if (color_depth == 2)
753 color_table = ff_qt_default_palette_4;
754 else if (color_depth == 4)
755 color_table = ff_qt_default_palette_16;
757 color_table = ff_qt_default_palette_256;
759 for (j = 0; j < color_count; j++) {
760 r = color_table[j * 4 + 0];
761 g = color_table[j * 4 + 1];
762 b = color_table[j * 4 + 2];
763 c->palette_control.palette[j] =
764 (r << 16) | (g << 8) | (b);
767 /* load the palette from the file */
768 color_start = get_be32(pb);
769 color_count = get_be16(pb);
770 color_end = get_be16(pb);
771 if ((color_start <= 255) &&
772 (color_end <= 255)) {
773 for (j = color_start; j <= color_end; j++) {
774 /* each R, G, or B component is 16 bits;
775 * only use the top 8 bits; skip alpha bytes
785 c->palette_control.palette[j] =
786 (r << 16) | (g << 8) | (b);
790 st->codec->palctrl = &c->palette_control;
791 st->codec->palctrl->palette_changed = 1;
793 st->codec->palctrl = NULL;
794 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
796 uint16_t version = get_be16(pb);
798 st->codec->codec_id = id;
799 get_be16(pb); /* revision level */
800 get_be32(pb); /* vendor */
802 st->codec->channels = get_be16(pb); /* channel count */
803 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
804 st->codec->bits_per_sample = get_be16(pb); /* sample size */
806 sc->audio_cid = get_be16(pb);
807 get_be16(pb); /* packet size = 0 */
809 st->codec->sample_rate = ((get_be32(pb) >> 16));
811 switch (st->codec->codec_id) {
812 case CODEC_ID_PCM_S8:
813 case CODEC_ID_PCM_U8:
814 if (st->codec->bits_per_sample == 16)
815 st->codec->codec_id = CODEC_ID_PCM_S16BE;
817 case CODEC_ID_PCM_S16LE:
818 case CODEC_ID_PCM_S16BE:
819 if (st->codec->bits_per_sample == 8)
820 st->codec->codec_id = CODEC_ID_PCM_S8;
821 else if (st->codec->bits_per_sample == 24)
822 st->codec->codec_id = CODEC_ID_PCM_S24BE;
824 /* set values for old format before stsd version 1 appeared */
826 sc->samples_per_frame = 6;
827 sc->bytes_per_frame = 2*st->codec->channels;
830 sc->samples_per_frame = 6;
831 sc->bytes_per_frame = 1*st->codec->channels;
833 case CODEC_ID_ADPCM_IMA_QT:
834 sc->samples_per_frame = 64;
835 sc->bytes_per_frame = 34*st->codec->channels;
841 //Read QT version 1 fields. In version 0 these do not exist.
842 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
845 sc->samples_per_frame = get_be32(pb);
846 get_be32(pb); /* bytes per packet */
847 sc->bytes_per_frame = get_be32(pb);
848 get_be32(pb); /* bytes per sample */
849 } else if(version==2) {
850 get_be32(pb); /* sizeof struct only */
851 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
852 st->codec->channels = get_be32(pb);
853 get_be32(pb); /* always 0x7F000000 */
854 get_be32(pb); /* bits per channel if sound is uncompressed */
855 get_be32(pb); /* lcpm format specific flag */
856 get_be32(pb); /* bytes per audio packet if constant */
857 get_be32(pb); /* lpcm frames per audio packet if constant */
861 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
862 if (bits_per_sample) {
863 st->codec->bits_per_sample = bits_per_sample;
864 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
866 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
867 st->codec->codec_id= id;
869 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
870 url_fskip(pb, size - (url_ftell(pb) - start_pos));
872 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
873 a.size = size - (url_ftell(pb) - start_pos);
875 if (mov_read_default(c, pb, a) < 0)
877 } else if (a.size > 0)
878 url_fskip(pb, a.size);
881 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
882 st->codec->sample_rate= sc->time_scale;
884 /* special codec parameters handling */
885 switch (st->codec->codec_id) {
886 #ifdef CONFIG_DV_DEMUXER
887 case CODEC_ID_DVAUDIO:
888 c->dv_fctx = av_alloc_format_context();
889 c->dv_demux = dv_init_demux(c->dv_fctx);
891 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
894 sc->dv_audio_container = 1;
895 st->codec->codec_id = CODEC_ID_PCM_S16LE;
898 /* no ifdef since parameters are always those */
899 case CODEC_ID_AMR_WB:
900 st->codec->sample_rate= 16000;
901 st->codec->channels= 1; /* really needed */
903 case CODEC_ID_AMR_NB:
904 st->codec->sample_rate= 8000;
905 st->codec->channels= 1; /* really needed */
909 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
910 st->need_parsing = AVSTREAM_PARSE_FULL;
912 case CODEC_ID_ADPCM_MS:
913 case CODEC_ID_ADPCM_IMA_WAV:
914 st->codec->block_align = sc->bytes_per_frame;
923 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
925 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
926 MOVStreamContext *sc = st->priv_data;
927 unsigned int i, entries;
929 get_byte(pb); /* version */
930 get_be24(pb); /* flags */
932 entries = get_be32(pb);
934 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
937 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
939 sc->sample_to_chunk_sz = entries;
940 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
941 if (!sc->sample_to_chunk)
943 for(i=0; i<entries; i++) {
944 sc->sample_to_chunk[i].first = get_be32(pb);
945 sc->sample_to_chunk[i].count = get_be32(pb);
946 sc->sample_to_chunk[i].id = get_be32(pb);
951 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
953 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
954 MOVStreamContext *sc = st->priv_data;
955 unsigned int i, entries;
957 get_byte(pb); /* version */
958 get_be24(pb); /* flags */
960 entries = get_be32(pb);
962 if(entries >= UINT_MAX / sizeof(int))
965 sc->keyframe_count = entries;
967 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
969 sc->keyframes = av_malloc(entries * sizeof(int));
972 for(i=0; i<entries; i++) {
973 sc->keyframes[i] = get_be32(pb);
974 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
979 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
981 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
982 MOVStreamContext *sc = st->priv_data;
983 unsigned int i, entries, sample_size;
985 get_byte(pb); /* version */
986 get_be24(pb); /* flags */
988 sample_size = get_be32(pb);
989 if (!sc->sample_size) /* do not overwrite value computed in stsd */
990 sc->sample_size = sample_size;
991 entries = get_be32(pb);
992 if(entries >= UINT_MAX / sizeof(int))
995 sc->sample_count = entries;
999 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1001 sc->sample_sizes = av_malloc(entries * sizeof(int));
1002 if (!sc->sample_sizes)
1004 for(i=0; i<entries; i++) {
1005 sc->sample_sizes[i] = get_be32(pb);
1006 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
1011 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1013 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1014 MOVStreamContext *sc = st->priv_data;
1015 unsigned int i, entries;
1017 int64_t total_sample_count=0;
1019 get_byte(pb); /* version */
1020 get_be24(pb); /* flags */
1021 entries = get_be32(pb);
1022 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1025 sc->stts_count = entries;
1026 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
1029 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1033 for(i=0; i<entries; i++) {
1034 int sample_duration;
1037 sample_count=get_be32(pb);
1038 sample_duration = get_be32(pb);
1039 sc->stts_data[i].count= sample_count;
1040 sc->stts_data[i].duration= sample_duration;
1042 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1044 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1046 duration+=(int64_t)sample_duration*sample_count;
1047 total_sample_count+=sample_count;
1050 st->nb_frames= total_sample_count;
1052 st->duration= duration;
1056 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1058 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1059 MOVStreamContext *sc = st->priv_data;
1060 unsigned int i, entries;
1062 get_byte(pb); /* version */
1063 get_be24(pb); /* flags */
1064 entries = get_be32(pb);
1065 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1068 sc->ctts_count = entries;
1069 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1072 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1074 for(i=0; i<entries; i++) {
1075 int count =get_be32(pb);
1076 int duration =get_be32(pb);
1079 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1081 url_fskip(pb, 8 * (entries - i - 1));
1084 sc->ctts_data[i].count = count;
1085 sc->ctts_data[i].duration= duration;
1087 sc->time_rate= ff_gcd(sc->time_rate, duration);
1092 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1095 MOVStreamContext *sc;
1097 st = av_new_stream(c->fc, c->fc->nb_streams);
1099 sc = av_mallocz(sizeof(MOVStreamContext));
1106 st->codec->codec_type = CODEC_TYPE_DATA;
1107 st->start_time = 0; /* XXX: check */
1109 return mov_read_default(c, pb, atom);
1112 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1114 uint16_t str_size = get_be16(pb); /* string length */;
1116 get_be16(pb); /* skip language */
1117 get_buffer(pb, str, FFMIN(size, str_size));
1120 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1122 uint64_t end = url_ftell(pb) + atom.size;
1124 while (url_ftell(pb) + 8 < end) {
1125 uint32_t tag_size = get_be32(pb);
1126 uint32_t tag = get_le32(pb);
1127 uint64_t next = url_ftell(pb) + tag_size - 8;
1129 if (next > end) // stop if tag_size is wrong
1133 case MKTAG(0xa9,'n','a','m'):
1134 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1136 case MKTAG(0xa9,'w','r','t'):
1137 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1139 case MKTAG(0xa9,'c','p','y'):
1140 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1142 case MKTAG(0xa9,'i','n','f'):
1143 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1149 url_fseek(pb, next, SEEK_SET);
1155 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1157 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1158 int version = get_byte(pb);
1160 get_be24(pb); /* flags */
1162 MOV_TRACK_ENABLED 0x0001
1163 MOV_TRACK_IN_MOVIE 0x0002
1164 MOV_TRACK_IN_PREVIEW 0x0004
1165 MOV_TRACK_IN_POSTER 0x0008
1172 get_be32(pb); /* creation time */
1173 get_be32(pb); /* modification time */
1175 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1176 get_be32(pb); /* reserved */
1177 st->start_time = 0; /* check */
1178 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1179 get_be32(pb); /* reserved */
1180 get_be32(pb); /* reserved */
1182 get_be16(pb); /* layer */
1183 get_be16(pb); /* alternate group */
1184 get_be16(pb); /* volume */
1185 get_be16(pb); /* reserved */
1187 url_fskip(pb, 36); /* display matrix */
1189 /* those are fixed-point */
1190 get_be32(pb); /* track width */
1191 get_be32(pb); /* track height */
1196 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1197 /* like the files created with Adobe Premiere 5.0, for samples see */
1198 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1199 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1204 return 0; /* continue */
1205 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1206 url_fskip(pb, atom.size - 4);
1209 atom.type = get_le32(pb);
1212 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1213 url_fskip(pb, atom.size);
1216 err = mov_read_mdat(c, pb, atom);
1220 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1225 uint8_t *moov_data; /* uncompressed data */
1226 long cmov_len, moov_len;
1229 get_be32(pb); /* dcom atom */
1230 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1232 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1233 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1236 get_be32(pb); /* cmvd atom */
1237 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1239 moov_len = get_be32(pb); /* uncompressed size */
1240 cmov_len = atom.size - 6 * 4;
1242 cmov_data = av_malloc(cmov_len);
1245 moov_data = av_malloc(moov_len);
1250 get_buffer(pb, cmov_data, cmov_len);
1251 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1253 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1255 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1257 atom.size = moov_len;
1259 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1261 ret = mov_read_default(c, &ctx, atom);
1266 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1271 /* edit list atom */
1272 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1274 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1277 get_byte(pb); /* version */
1278 get_be24(pb); /* flags */
1279 edit_count= sc->edit_count = get_be32(pb); /* entries */
1281 for(i=0; i<edit_count; i++){
1283 get_be32(pb); /* Track duration */
1284 time = get_be32(pb); /* Media time */
1285 get_be32(pb); /* Media rate */
1287 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1288 "a/v desync might occur, patch welcome\n");
1290 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1294 static const MOVParseTableEntry mov_default_parse_table[] = {
1296 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1297 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1298 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default },
1299 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_dref },
1300 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1301 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1302 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1303 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1304 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1305 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1306 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1307 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1308 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1309 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1310 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1311 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1312 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1313 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1314 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1315 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1316 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1317 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1318 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1319 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1320 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1321 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1322 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1323 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1324 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1325 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1326 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1327 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1328 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1329 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1330 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1334 /* XXX: is it sufficient ? */
1335 static int mov_probe(AVProbeData *p)
1337 unsigned int offset;
1341 /* check file header */
1344 /* ignore invalid offset */
1345 if ((offset + 8) > (unsigned int)p->buf_size)
1347 tag = AV_RL32(p->buf + offset + 4);
1349 /* check for obvious tags */
1350 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1351 case MKTAG( 'm', 'o', 'o', 'v' ):
1352 case MKTAG( 'm', 'd', 'a', 't' ):
1353 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1354 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1355 return AVPROBE_SCORE_MAX;
1356 /* those are more common words, so rate then a bit less */
1357 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1358 case MKTAG( 'w', 'i', 'd', 'e' ):
1359 case MKTAG( 'f', 'r', 'e', 'e' ):
1360 case MKTAG( 'j', 'u', 'n', 'k' ):
1361 case MKTAG( 'p', 'i', 'c', 't' ):
1362 return AVPROBE_SCORE_MAX - 5;
1363 case MKTAG(0x82,0x82,0x7f,0x7d ):
1364 case MKTAG( 'f', 't', 'y', 'p' ):
1365 case MKTAG( 's', 'k', 'i', 'p' ):
1366 case MKTAG( 'u', 'u', 'i', 'd' ):
1367 offset = AV_RB32(p->buf+offset) + offset;
1368 /* if we only find those cause probedata is too small at least rate them */
1369 score = AVPROBE_SCORE_MAX - 50;
1372 /* unrecognized tag */
1379 static void mov_build_index(MOVContext *mov, AVStream *st)
1381 MOVStreamContext *sc = st->priv_data;
1382 offset_t current_offset;
1383 int64_t current_dts = 0;
1384 unsigned int stts_index = 0;
1385 unsigned int stsc_index = 0;
1386 unsigned int stss_index = 0;
1389 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1390 sc->audio_cid == -2) {
1391 unsigned int current_sample = 0;
1392 unsigned int stts_sample = 0;
1393 unsigned int keyframe, sample_size;
1394 unsigned int distance = 0;
1395 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1397 st->nb_frames = sc->sample_count;
1398 for (i = 0; i < sc->chunk_count; i++) {
1399 current_offset = sc->chunk_offsets[i];
1400 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1401 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1403 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1404 if (current_sample >= sc->sample_count) {
1405 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1408 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1411 if (stss_index + 1 < sc->keyframe_count)
1414 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1415 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1416 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1417 current_offset, current_dts, sample_size, distance, keyframe);
1418 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1419 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1420 keyframe ? AVINDEX_KEYFRAME : 0);
1421 current_offset += sample_size;
1422 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1423 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1427 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1433 } else { /* read whole chunk */
1434 unsigned int chunk_samples, chunk_size, chunk_duration;
1435 unsigned int frames = 1;
1436 for (i = 0; i < sc->chunk_count; i++) {
1437 current_offset = sc->chunk_offsets[i];
1438 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1439 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1441 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1442 /* get chunk size, beware of alaw/ulaw/mace */
1443 if (sc->samples_per_frame > 0 &&
1444 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1445 if (sc->samples_per_frame < 1024)
1446 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1448 chunk_size = sc->bytes_per_frame;
1449 frames = chunk_samples / sc->samples_per_frame;
1450 chunk_samples = sc->samples_per_frame;
1452 } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
1453 chunk_size = chunk_samples * sc->sample_size;
1455 av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1458 for (j = 0; j < frames; j++) {
1459 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1460 /* get chunk duration */
1462 while (chunk_samples > 0) {
1463 if (chunk_samples < sc->stts_data[stts_index].count) {
1464 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1465 sc->stts_data[stts_index].count -= chunk_samples;
1468 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1469 chunk_samples -= sc->stts_data[stts_index].count;
1470 if (stts_index + 1 < sc->stts_count)
1474 current_offset += sc->bytes_per_frame;
1475 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1476 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1477 assert(chunk_duration % sc->time_rate == 0);
1478 current_dts += chunk_duration / sc->time_rate;
1483 /* adjust sample count to avindex entries */
1484 sc->sample_count = st->nb_index_entries;
1487 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1489 MOVContext *mov = s->priv_data;
1490 ByteIOContext *pb = s->pb;
1492 MOV_atom_t atom = { 0, 0, 0 };
1496 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1497 atom.size = url_fsize(pb);
1499 atom.size = INT64_MAX;
1501 /* check MOV header */
1502 err = mov_read_default(mov, pb, atom);
1503 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1504 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1505 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1508 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1510 for(i=0; i<s->nb_streams; i++) {
1511 AVStream *st = s->streams[i];
1512 MOVStreamContext *sc = st->priv_data;
1514 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1515 (!sc->sample_size && !sc->sample_count)){
1516 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1517 sc->sample_count = 0; //ignore track
1523 sc->time_scale= mov->time_scale;
1524 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1526 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1527 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1529 if(st->duration != AV_NOPTS_VALUE){
1530 assert(st->duration % sc->time_rate == 0);
1531 st->duration /= sc->time_rate;
1534 mov_build_index(mov, st);
1536 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1537 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1538 av_log(s, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
1539 st->index, strerror(errno));
1543 switch (st->codec->codec_id) {
1544 #ifdef CONFIG_H261_DECODER
1547 #ifdef CONFIG_H263_DECODER
1550 #ifdef CONFIG_MPEG4_DECODER
1551 case CODEC_ID_MPEG4:
1553 st->codec->width= 0; /* let decoder init width/height */
1554 st->codec->height= 0;
1556 #ifdef CONFIG_LIBFAAD
1559 #ifdef CONFIG_VORBIS_DECODER
1560 case CODEC_ID_VORBIS:
1562 case CODEC_ID_MP3ON4:
1563 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1568 for(i=0; i<s->nb_streams; i++) {
1569 MOVStreamContext *sc = s->streams[i]->priv_data;
1570 /* Do not need those anymore. */
1571 av_freep(&sc->chunk_offsets);
1572 av_freep(&sc->sample_to_chunk);
1573 av_freep(&sc->sample_sizes);
1574 av_freep(&sc->keyframes);
1575 av_freep(&sc->stts_data);
1580 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1582 MOVContext *mov = s->priv_data;
1583 MOVStreamContext *sc = 0;
1584 AVIndexEntry *sample = 0;
1585 int64_t best_dts = INT64_MAX;
1588 for (i = 0; i < s->nb_streams; i++) {
1589 AVStream *st = s->streams[i];
1590 MOVStreamContext *msc = st->priv_data;
1591 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
1592 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1593 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1594 AV_TIME_BASE, msc->time_scale);
1595 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1596 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1597 (!url_is_streamed(s->pb) &&
1598 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
1599 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1600 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
1601 sample = current_sample;
1609 /* must be done just before reading, to avoid infinite loop on sample */
1610 sc->current_sample++;
1611 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
1612 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1613 sc->ffindex, sample->pos);
1616 av_get_packet(sc->pb, pkt, sample->size);
1617 #ifdef CONFIG_DV_DEMUXER
1618 if (mov->dv_demux && sc->dv_audio_container) {
1619 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1622 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1626 pkt->stream_index = sc->ffindex;
1627 pkt->dts = sample->timestamp;
1628 if (sc->ctts_data) {
1629 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1630 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1631 /* update ctts context */
1632 sc->sample_to_ctime_sample++;
1633 if (sc->sample_to_ctime_index < sc->ctts_count &&
1634 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1635 sc->sample_to_ctime_index++;
1636 sc->sample_to_ctime_sample = 0;
1639 pkt->pts = pkt->dts;
1641 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1642 pkt->pos = sample->pos;
1643 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1644 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1648 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1650 MOVStreamContext *sc = st->priv_data;
1651 int sample, time_sample;
1654 sample = av_index_search_timestamp(st, timestamp, flags);
1655 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1656 if (sample < 0) /* not sure what to do */
1658 sc->current_sample = sample;
1659 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1660 /* adjust ctts index */
1661 if (sc->ctts_data) {
1663 for (i = 0; i < sc->ctts_count; i++) {
1664 int next = time_sample + sc->ctts_data[i].count;
1665 if (next > sc->current_sample) {
1666 sc->sample_to_ctime_index = i;
1667 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1676 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1679 int64_t seek_timestamp, timestamp;
1683 if (stream_index >= s->nb_streams)
1686 st = s->streams[stream_index];
1687 sample = mov_seek_stream(st, sample_time, flags);
1691 /* adjust seek timestamp to found sample timestamp */
1692 seek_timestamp = st->index_entries[sample].timestamp;
1694 for (i = 0; i < s->nb_streams; i++) {
1696 if (stream_index == i || st->discard == AVDISCARD_ALL)
1699 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1700 mov_seek_stream(st, timestamp, flags);
1705 static int mov_read_close(AVFormatContext *s)
1708 MOVContext *mov = s->priv_data;
1709 for(i=0; i<s->nb_streams; i++) {
1710 MOVStreamContext *sc = s->streams[i]->priv_data;
1711 av_freep(&sc->ctts_data);
1712 for (j=0; j<sc->drefs_count; j++)
1713 av_freep(&sc->drefs[j].path);
1714 av_freep(&sc->drefs);
1715 if (sc->pb && sc->pb != s->pb)
1719 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1720 av_freep(&mov->dv_fctx->streams[i]->codec);
1721 av_freep(&mov->dv_fctx->streams[i]);
1723 av_freep(&mov->dv_fctx);
1724 av_freep(&mov->dv_demux);
1729 AVInputFormat mov_demuxer = {
1730 "mov,mp4,m4a,3gp,3g2,mj2",
1731 "QuickTime/MPEG4/Motion JPEG 2000 format",