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 <0: 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);
1009 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1011 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1012 MOVStreamContext *sc = st->priv_data;
1013 unsigned int i, entries;
1015 int64_t total_sample_count=0;
1017 get_byte(pb); /* version */
1018 get_be24(pb); /* flags */
1019 entries = get_be32(pb);
1020 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1023 sc->stts_count = entries;
1024 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
1027 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1031 for(i=0; i<entries; i++) {
1032 int sample_duration;
1035 sample_count=get_be32(pb);
1036 sample_duration = get_be32(pb);
1037 sc->stts_data[i].count= sample_count;
1038 sc->stts_data[i].duration= sample_duration;
1040 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1042 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1044 duration+=(int64_t)sample_duration*sample_count;
1045 total_sample_count+=sample_count;
1048 st->nb_frames= total_sample_count;
1050 st->duration= duration;
1054 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1056 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1057 MOVStreamContext *sc = st->priv_data;
1058 unsigned int i, entries;
1060 get_byte(pb); /* version */
1061 get_be24(pb); /* flags */
1062 entries = get_be32(pb);
1063 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1066 sc->ctts_count = entries;
1067 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1070 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1072 for(i=0; i<entries; i++) {
1073 int count =get_be32(pb);
1074 int duration =get_be32(pb);
1077 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1079 url_fskip(pb, 8 * (entries - i - 1));
1082 sc->ctts_data[i].count = count;
1083 sc->ctts_data[i].duration= duration;
1085 sc->time_rate= ff_gcd(sc->time_rate, duration);
1090 static void mov_build_index(MOVContext *mov, AVStream *st)
1092 MOVStreamContext *sc = st->priv_data;
1093 offset_t current_offset;
1094 int64_t current_dts = 0;
1095 unsigned int stts_index = 0;
1096 unsigned int stsc_index = 0;
1097 unsigned int stss_index = 0;
1100 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1101 sc->audio_cid == -2) {
1102 unsigned int current_sample = 0;
1103 unsigned int stts_sample = 0;
1104 unsigned int keyframe, sample_size;
1105 unsigned int distance = 0;
1106 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1108 st->nb_frames = sc->sample_count;
1109 for (i = 0; i < sc->chunk_count; i++) {
1110 current_offset = sc->chunk_offsets[i];
1111 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1112 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1114 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1115 if (current_sample >= sc->sample_count) {
1116 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1119 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1122 if (stss_index + 1 < sc->keyframe_count)
1125 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1126 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1127 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1128 current_offset, current_dts, sample_size, distance, keyframe);
1129 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1130 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1131 keyframe ? AVINDEX_KEYFRAME : 0);
1132 current_offset += sample_size;
1133 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1134 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1138 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1144 } else { /* read whole chunk */
1145 unsigned int chunk_samples, chunk_size, chunk_duration;
1146 unsigned int frames = 1;
1147 for (i = 0; i < sc->chunk_count; i++) {
1148 current_offset = sc->chunk_offsets[i];
1149 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1150 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1152 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1153 /* get chunk size, beware of alaw/ulaw/mace */
1154 if (sc->samples_per_frame > 0 &&
1155 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1156 if (sc->samples_per_frame < 1024)
1157 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1159 chunk_size = sc->bytes_per_frame;
1160 frames = chunk_samples / sc->samples_per_frame;
1161 chunk_samples = sc->samples_per_frame;
1163 } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
1164 chunk_size = chunk_samples * sc->sample_size;
1166 av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1169 for (j = 0; j < frames; j++) {
1170 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1171 /* get chunk duration */
1173 while (chunk_samples > 0) {
1174 if (chunk_samples < sc->stts_data[stts_index].count) {
1175 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1176 sc->stts_data[stts_index].count -= chunk_samples;
1179 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1180 chunk_samples -= sc->stts_data[stts_index].count;
1181 if (stts_index + 1 < sc->stts_count)
1185 current_offset += sc->bytes_per_frame;
1186 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1187 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1188 assert(chunk_duration % sc->time_rate == 0);
1189 current_dts += chunk_duration / sc->time_rate;
1194 /* adjust sample count to avindex entries */
1195 sc->sample_count = st->nb_index_entries;
1198 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1201 MOVStreamContext *sc;
1204 st = av_new_stream(c->fc, c->fc->nb_streams);
1205 if (!st) return AVERROR(ENOMEM);
1206 sc = av_mallocz(sizeof(MOVStreamContext));
1207 if (!sc) return AVERROR(ENOMEM);
1210 st->codec->codec_type = CODEC_TYPE_DATA;
1211 st->start_time = 0; /* XXX: check */
1213 if ((ret = mov_read_default(c, pb, atom)) < 0)
1217 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1218 (!sc->sample_size && !sc->sample_count)){
1219 av_log(c->fc, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1220 sc->sample_count = 0; //ignore track
1226 sc->time_scale= c->time_scale;
1227 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1229 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1230 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1232 if(st->duration != AV_NOPTS_VALUE){
1233 assert(st->duration % sc->time_rate == 0);
1234 st->duration /= sc->time_rate;
1236 sc->ffindex = st->index;
1237 mov_build_index(c, st);
1239 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1240 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1241 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
1242 st->index, strerror(errno));
1246 switch (st->codec->codec_id) {
1247 #ifdef CONFIG_H261_DECODER
1250 #ifdef CONFIG_H263_DECODER
1253 #ifdef CONFIG_MPEG4_DECODER
1254 case CODEC_ID_MPEG4:
1256 st->codec->width= 0; /* let decoder init width/height */
1257 st->codec->height= 0;
1259 #ifdef CONFIG_LIBFAAD
1262 #ifdef CONFIG_VORBIS_DECODER
1263 case CODEC_ID_VORBIS:
1265 case CODEC_ID_MP3ON4:
1266 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1270 /* Do not need those anymore. */
1271 av_freep(&sc->chunk_offsets);
1272 av_freep(&sc->sample_to_chunk);
1273 av_freep(&sc->sample_sizes);
1274 av_freep(&sc->keyframes);
1275 av_freep(&sc->stts_data);
1280 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1282 uint16_t str_size = get_be16(pb); /* string length */;
1284 get_be16(pb); /* skip language */
1285 get_buffer(pb, str, FFMIN(size, str_size));
1288 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1290 uint64_t end = url_ftell(pb) + atom.size;
1292 while (url_ftell(pb) + 8 < end) {
1293 uint32_t tag_size = get_be32(pb);
1294 uint32_t tag = get_le32(pb);
1295 uint64_t next = url_ftell(pb) + tag_size - 8;
1297 if (next > end) // stop if tag_size is wrong
1301 case MKTAG(0xa9,'n','a','m'):
1302 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1304 case MKTAG(0xa9,'w','r','t'):
1305 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1307 case MKTAG(0xa9,'c','p','y'):
1308 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1310 case MKTAG(0xa9,'i','n','f'):
1311 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1317 url_fseek(pb, next, SEEK_SET);
1323 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1325 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1326 int version = get_byte(pb);
1328 get_be24(pb); /* flags */
1330 MOV_TRACK_ENABLED 0x0001
1331 MOV_TRACK_IN_MOVIE 0x0002
1332 MOV_TRACK_IN_PREVIEW 0x0004
1333 MOV_TRACK_IN_POSTER 0x0008
1340 get_be32(pb); /* creation time */
1341 get_be32(pb); /* modification time */
1343 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1344 get_be32(pb); /* reserved */
1345 st->start_time = 0; /* check */
1346 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1347 get_be32(pb); /* reserved */
1348 get_be32(pb); /* reserved */
1350 get_be16(pb); /* layer */
1351 get_be16(pb); /* alternate group */
1352 get_be16(pb); /* volume */
1353 get_be16(pb); /* reserved */
1355 url_fskip(pb, 36); /* display matrix */
1357 /* those are fixed-point */
1358 get_be32(pb); /* track width */
1359 get_be32(pb); /* track height */
1364 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1365 /* like the files created with Adobe Premiere 5.0, for samples see */
1366 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1367 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1372 return 0; /* continue */
1373 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1374 url_fskip(pb, atom.size - 4);
1377 atom.type = get_le32(pb);
1380 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1381 url_fskip(pb, atom.size);
1384 err = mov_read_mdat(c, pb, atom);
1388 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1393 uint8_t *moov_data; /* uncompressed data */
1394 long cmov_len, moov_len;
1397 get_be32(pb); /* dcom atom */
1398 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1400 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1401 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1404 get_be32(pb); /* cmvd atom */
1405 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1407 moov_len = get_be32(pb); /* uncompressed size */
1408 cmov_len = atom.size - 6 * 4;
1410 cmov_data = av_malloc(cmov_len);
1413 moov_data = av_malloc(moov_len);
1418 get_buffer(pb, cmov_data, cmov_len);
1419 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1421 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1423 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1425 atom.size = moov_len;
1427 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1429 ret = mov_read_default(c, &ctx, atom);
1434 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1439 /* edit list atom */
1440 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1442 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1445 get_byte(pb); /* version */
1446 get_be24(pb); /* flags */
1447 edit_count= sc->edit_count = get_be32(pb); /* entries */
1449 for(i=0; i<edit_count; i++){
1451 get_be32(pb); /* Track duration */
1452 time = get_be32(pb); /* Media time */
1453 get_be32(pb); /* Media rate */
1455 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1456 "a/v desync might occur, patch welcome\n");
1458 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1462 static const MOVParseTableEntry mov_default_parse_table[] = {
1463 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1464 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1465 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default },
1466 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_dref },
1467 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1468 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1469 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1470 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1471 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1472 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1473 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1474 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1475 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1476 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1477 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1478 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1479 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1480 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1481 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1482 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1483 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1484 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1485 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1486 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1487 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1488 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1489 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1490 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1491 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1492 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1493 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1494 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1495 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1496 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1497 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1501 static int mov_probe(AVProbeData *p)
1503 unsigned int offset;
1507 /* check file header */
1510 /* ignore invalid offset */
1511 if ((offset + 8) > (unsigned int)p->buf_size)
1513 tag = AV_RL32(p->buf + offset + 4);
1515 /* check for obvious tags */
1516 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1517 case MKTAG( 'm', 'o', 'o', 'v' ):
1518 case MKTAG( 'm', 'd', 'a', 't' ):
1519 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1520 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1521 return AVPROBE_SCORE_MAX;
1522 /* those are more common words, so rate then a bit less */
1523 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1524 case MKTAG( 'w', 'i', 'd', 'e' ):
1525 case MKTAG( 'f', 'r', 'e', 'e' ):
1526 case MKTAG( 'j', 'u', 'n', 'k' ):
1527 case MKTAG( 'p', 'i', 'c', 't' ):
1528 return AVPROBE_SCORE_MAX - 5;
1529 case MKTAG(0x82,0x82,0x7f,0x7d ):
1530 case MKTAG( 'f', 't', 'y', 'p' ):
1531 case MKTAG( 's', 'k', 'i', 'p' ):
1532 case MKTAG( 'u', 'u', 'i', 'd' ):
1533 offset = AV_RB32(p->buf+offset) + offset;
1534 /* if we only find those cause probedata is too small at least rate them */
1535 score = AVPROBE_SCORE_MAX - 50;
1538 /* unrecognized tag */
1545 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1547 MOVContext *mov = s->priv_data;
1548 ByteIOContext *pb = s->pb;
1550 MOV_atom_t atom = { 0, 0, 0 };
1554 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1555 atom.size = url_fsize(pb);
1557 atom.size = INT64_MAX;
1559 /* check MOV header */
1560 err = mov_read_default(mov, pb, atom);
1561 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1562 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1563 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1566 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1571 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1573 MOVContext *mov = s->priv_data;
1574 MOVStreamContext *sc = 0;
1575 AVIndexEntry *sample = 0;
1576 int64_t best_dts = INT64_MAX;
1579 for (i = 0; i < s->nb_streams; i++) {
1580 AVStream *st = s->streams[i];
1581 MOVStreamContext *msc = st->priv_data;
1582 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
1583 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1584 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1585 AV_TIME_BASE, msc->time_scale);
1586 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1587 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1588 (!url_is_streamed(s->pb) &&
1589 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
1590 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1591 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
1592 sample = current_sample;
1600 /* must be done just before reading, to avoid infinite loop on sample */
1601 sc->current_sample++;
1602 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
1603 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1604 sc->ffindex, sample->pos);
1607 av_get_packet(sc->pb, pkt, sample->size);
1608 #ifdef CONFIG_DV_DEMUXER
1609 if (mov->dv_demux && sc->dv_audio_container) {
1610 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1613 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1617 pkt->stream_index = sc->ffindex;
1618 pkt->dts = sample->timestamp;
1619 if (sc->ctts_data) {
1620 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1621 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1622 /* update ctts context */
1623 sc->sample_to_ctime_sample++;
1624 if (sc->sample_to_ctime_index < sc->ctts_count &&
1625 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1626 sc->sample_to_ctime_index++;
1627 sc->sample_to_ctime_sample = 0;
1630 pkt->pts = pkt->dts;
1632 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1633 pkt->pos = sample->pos;
1634 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1635 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1639 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1641 MOVStreamContext *sc = st->priv_data;
1642 int sample, time_sample;
1645 sample = av_index_search_timestamp(st, timestamp, flags);
1646 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1647 if (sample < 0) /* not sure what to do */
1649 sc->current_sample = sample;
1650 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1651 /* adjust ctts index */
1652 if (sc->ctts_data) {
1654 for (i = 0; i < sc->ctts_count; i++) {
1655 int next = time_sample + sc->ctts_data[i].count;
1656 if (next > sc->current_sample) {
1657 sc->sample_to_ctime_index = i;
1658 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1667 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1670 int64_t seek_timestamp, timestamp;
1674 if (stream_index >= s->nb_streams)
1677 st = s->streams[stream_index];
1678 sample = mov_seek_stream(st, sample_time, flags);
1682 /* adjust seek timestamp to found sample timestamp */
1683 seek_timestamp = st->index_entries[sample].timestamp;
1685 for (i = 0; i < s->nb_streams; i++) {
1687 if (stream_index == i || st->discard == AVDISCARD_ALL)
1690 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1691 mov_seek_stream(st, timestamp, flags);
1696 static int mov_read_close(AVFormatContext *s)
1699 MOVContext *mov = s->priv_data;
1700 for(i=0; i<s->nb_streams; i++) {
1701 MOVStreamContext *sc = s->streams[i]->priv_data;
1702 av_freep(&sc->ctts_data);
1703 for (j=0; j<sc->drefs_count; j++)
1704 av_freep(&sc->drefs[j].path);
1705 av_freep(&sc->drefs);
1706 if (sc->pb && sc->pb != s->pb)
1710 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1711 av_freep(&mov->dv_fctx->streams[i]->codec);
1712 av_freep(&mov->dv_fctx->streams[i]);
1714 av_freep(&mov->dv_fctx);
1715 av_freep(&mov->dv_demux);
1720 AVInputFormat mov_demuxer = {
1721 "mov,mp4,m4a,3gp,3g2,mj2",
1722 "QuickTime/MPEG4/Motion JPEG 2000 format",