3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define DEBUG_METADATA
27 //#define MOV_EXPORT_ALL_METADATA
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/avstring.h"
34 #include "libavcodec/mpeg4audio.h"
35 #include "libavcodec/mpegaudiodata.h"
36 #include "libavcodec/get_bits.h"
43 * First version by Francois Revol revol@free.fr
44 * Seek function by Gael Chardon gael.dev@4now.net
46 * Features and limitations:
47 * - reads most of the QT files I have (at least the structure),
48 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
49 * - the code is quite ugly... maybe I won't do it recursive next time :-)
51 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
52 * when coding this :) (it's a writer anyway)
54 * Reference documents:
55 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
57 * http://developer.apple.com/documentation/QuickTime/QTFF/
58 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
59 * QuickTime is a trademark of Apple (AFAIK :))
62 #include "qtpalette.h"
68 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
70 /* those functions parse an atom */
72 0: continue to parse next atom
73 <0: error occurred, exit
75 /* links atom IDs to parse functions */
76 typedef struct MOVParseTableEntry
{
78 int (*parse
)(MOVContext
*ctx
, ByteIOContext
*pb
, MOVAtom atom
);
81 static const MOVParseTableEntry mov_default_parse_table
[];
83 static int mov_metadata_trkn(MOVContext
*c
, ByteIOContext
*pb
, unsigned len
)
87 get_be16(pb
); // unknown
88 snprintf(buf
, sizeof(buf
), "%d", get_be16(pb
));
89 av_metadata_set(&c
->fc
->metadata
, "track", buf
);
91 get_be16(pb
); // total tracks
96 static int mov_read_udta_string(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
98 #ifdef MOV_EXPORT_ALL_METADATA
101 char str
[1024], key2
[16], language
[4] = {0};
102 const char *key
= NULL
;
104 int (*parse
)(MOVContext
*, ByteIOContext
*, unsigned) = NULL
;
107 case MKTAG(0xa9,'n','a','m'): key
= "title"; break;
108 case MKTAG(0xa9,'a','u','t'):
109 case MKTAG(0xa9,'A','R','T'):
110 case MKTAG(0xa9,'w','r','t'): key
= "author"; break;
111 case MKTAG(0xa9,'c','p','y'): key
= "copyright"; break;
112 case MKTAG(0xa9,'c','m','t'):
113 case MKTAG(0xa9,'i','n','f'): key
= "comment"; break;
114 case MKTAG(0xa9,'a','l','b'): key
= "album"; break;
115 case MKTAG(0xa9,'d','a','y'): key
= "year"; break;
116 case MKTAG(0xa9,'g','e','n'): key
= "genre"; break;
117 case MKTAG(0xa9,'t','o','o'):
118 case MKTAG(0xa9,'e','n','c'): key
= "muxer"; break;
119 case MKTAG( 't','r','k','n'): key
= "track";
120 parse
= mov_metadata_trkn
; break;
123 if (c
->itunes_metadata
&& atom
.size
> 8) {
124 int data_size
= get_be32(pb
);
125 int tag
= get_le32(pb
);
126 if (tag
== MKTAG('d','a','t','a')) {
127 get_be32(pb
); // type
128 get_be32(pb
); // unknown
129 str_size
= data_size
- 16;
132 } else if (atom
.size
> 4 && key
&& !c
->itunes_metadata
) {
133 str_size
= get_be16(pb
); // string length
134 ff_mov_lang_to_iso639(get_be16(pb
), language
);
137 str_size
= atom
.size
;
139 #ifdef MOV_EXPORT_ALL_METADATA
141 snprintf(tmp_key
, 5, "%.4s", (char*)&atom
.type
);
151 str_size
= FFMIN3(sizeof(str
)-1, str_size
, atom
.size
);
154 parse(c
, pb
, str_size
);
156 get_buffer(pb
, str
, str_size
);
158 av_metadata_set(&c
->fc
->metadata
, key
, str
);
159 if (*language
&& strcmp(language
, "und")) {
160 snprintf(key2
, sizeof(key2
), "%s-%s", key
, language
);
161 av_metadata_set(&c
->fc
->metadata
, key2
, str
);
164 #ifdef DEBUG_METADATA
165 av_log(c
->fc
, AV_LOG_DEBUG
, "lang \"%3s\" ", language
);
166 av_log(c
->fc
, AV_LOG_DEBUG
, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
167 key
, str
, (char*)&atom
.type
, str_size
, atom
.size
);
173 static int mov_read_default(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
175 int64_t total_size
= 0;
180 a
.offset
= atom
.offset
;
183 atom
.size
= INT64_MAX
;
184 while(((total_size
+ 8) < atom
.size
) && !url_feof(pb
) && !err
) {
185 int (*parse
)(MOVContext
*, ByteIOContext
*, MOVAtom
) = NULL
;
189 a
.size
= get_be32(pb
);
190 a
.type
= get_le32(pb
);
194 dprintf(c
->fc
, "type: %08x %.4s sz: %"PRIx64
" %"PRIx64
" %"PRIx64
"\n",
195 a
.type
, (char*)&a
.type
, a
.size
, atom
.size
, total_size
);
196 if (a
.size
== 1) { /* 64 bit extended size */
197 a
.size
= get_be64(pb
) - 8;
202 a
.size
= atom
.size
- total_size
;
209 a
.size
= FFMIN(a
.size
, atom
.size
- total_size
);
211 for (i
= 0; mov_default_parse_table
[i
].type
; i
++)
212 if (mov_default_parse_table
[i
].type
== a
.type
) {
213 parse
= mov_default_parse_table
[i
].parse
;
217 // container is user data
218 if (!parse
&& (atom
.type
== MKTAG('u','d','t','a') ||
219 atom
.type
== MKTAG('i','l','s','t')))
220 parse
= mov_read_udta_string
;
222 if (!parse
) { /* skip leaf atoms data */
223 url_fskip(pb
, a
.size
);
225 int64_t start_pos
= url_ftell(pb
);
227 err
= parse(c
, pb
, a
);
228 if (url_is_streamed(pb
) && c
->found_moov
&& c
->found_mdat
)
230 left
= a
.size
- url_ftell(pb
) + start_pos
;
231 if (left
> 0) /* skip garbage at atom end */
236 total_size
+= a
.size
;
239 if (!err
&& total_size
< atom
.size
&& atom
.size
< 0x7ffff)
240 url_fskip(pb
, atom
.size
- total_size
);
245 static int mov_read_dref(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
247 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
248 MOVStreamContext
*sc
= st
->priv_data
;
251 get_be32(pb
); // version + flags
252 entries
= get_be32(pb
);
253 if (entries
>= UINT_MAX
/ sizeof(*sc
->drefs
))
255 sc
->drefs
= av_mallocz(entries
* sizeof(*sc
->drefs
));
257 return AVERROR(ENOMEM
);
258 sc
->drefs_count
= entries
;
260 for (i
= 0; i
< sc
->drefs_count
; i
++) {
261 MOVDref
*dref
= &sc
->drefs
[i
];
262 uint32_t size
= get_be32(pb
);
263 int64_t next
= url_ftell(pb
) + size
- 4;
265 dref
->type
= get_le32(pb
);
266 get_be32(pb
); // version + flags
267 dprintf(c
->fc
, "type %.4s size %d\n", (char*)&dref
->type
, size
);
269 if (dref
->type
== MKTAG('a','l','i','s') && size
> 150) {
270 /* macintosh alias record */
271 uint16_t volume_len
, len
;
277 volume_len
= get_byte(pb
);
278 volume_len
= FFMIN(volume_len
, 27);
279 get_buffer(pb
, volume
, 27);
280 volume
[volume_len
] = 0;
281 av_log(c
->fc
, AV_LOG_DEBUG
, "volume %s, len %d\n", volume
, volume_len
);
285 for (type
= 0; type
!= -1 && url_ftell(pb
) < next
; ) {
288 av_log(c
->fc
, AV_LOG_DEBUG
, "type %d, len %d\n", type
, len
);
291 if (type
== 2) { // absolute path
293 dref
->path
= av_mallocz(len
+1);
295 return AVERROR(ENOMEM
);
296 get_buffer(pb
, dref
->path
, len
);
297 if (len
> volume_len
&& !strncmp(dref
->path
, volume
, volume_len
)) {
299 memmove(dref
->path
, dref
->path
+volume_len
, len
);
302 for (j
= 0; j
< len
; j
++)
303 if (dref
->path
[j
] == ':')
305 av_log(c
->fc
, AV_LOG_DEBUG
, "path %s\n", dref
->path
);
310 url_fseek(pb
, next
, SEEK_SET
);
315 static int mov_read_hdlr(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
321 if (c
->fc
->nb_streams
< 1) // meta before first trak
324 st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
326 get_byte(pb
); /* version */
327 get_be24(pb
); /* flags */
330 ctype
= get_le32(pb
);
331 type
= get_le32(pb
); /* component subtype */
333 dprintf(c
->fc
, "ctype= %.4s (0x%08x)\n", (char*)&ctype
, ctype
);
334 dprintf(c
->fc
, "stype= %.4s\n", (char*)&type
);
336 if (type
== MKTAG('v','i','d','e'))
337 st
->codec
->codec_type
= CODEC_TYPE_VIDEO
;
338 else if(type
== MKTAG('s','o','u','n'))
339 st
->codec
->codec_type
= CODEC_TYPE_AUDIO
;
340 else if(type
== MKTAG('m','1','a',' '))
341 st
->codec
->codec_id
= CODEC_ID_MP2
;
342 else if(type
== MKTAG('s','u','b','p'))
343 st
->codec
->codec_type
= CODEC_TYPE_SUBTITLE
;
345 get_be32(pb
); /* component manufacture */
346 get_be32(pb
); /* component flags */
347 get_be32(pb
); /* component flags mask */
350 return 0; /* nothing left to read */
352 url_fskip(pb
, atom
.size
- (url_ftell(pb
) - atom
.offset
));
356 static int mp4_read_descr_len(ByteIOContext
*pb
)
361 int c
= get_byte(pb
);
362 len
= (len
<< 7) | (c
& 0x7f);
369 static int mp4_read_descr(MOVContext
*c
, ByteIOContext
*pb
, int *tag
)
373 len
= mp4_read_descr_len(pb
);
374 dprintf(c
->fc
, "MPEG4 description: tag=0x%02x len=%d\n", *tag
, len
);
378 #define MP4ESDescrTag 0x03
379 #define MP4DecConfigDescrTag 0x04
380 #define MP4DecSpecificDescrTag 0x05
382 static const AVCodecTag mp4_audio_types
[] = {
383 { CODEC_ID_MP3ON4
, AOT_PS
}, /* old mp3on4 draft */
384 { CODEC_ID_MP3ON4
, AOT_L1
}, /* layer 1 */
385 { CODEC_ID_MP3ON4
, AOT_L2
}, /* layer 2 */
386 { CODEC_ID_MP3ON4
, AOT_L3
}, /* layer 3 */
387 { CODEC_ID_NONE
, AOT_NULL
},
390 static int mov_read_esds(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
392 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
395 get_be32(pb
); /* version + flags */
396 len
= mp4_read_descr(c
, pb
, &tag
);
397 if (tag
== MP4ESDescrTag
) {
398 get_be16(pb
); /* ID */
399 get_byte(pb
); /* priority */
401 get_be16(pb
); /* ID */
403 len
= mp4_read_descr(c
, pb
, &tag
);
404 if (tag
== MP4DecConfigDescrTag
) {
405 int object_type_id
= get_byte(pb
);
406 get_byte(pb
); /* stream type */
407 get_be24(pb
); /* buffer size db */
408 get_be32(pb
); /* max bitrate */
409 get_be32(pb
); /* avg bitrate */
411 st
->codec
->codec_id
= codec_get_id(ff_mp4_obj_type
, object_type_id
);
412 dprintf(c
->fc
, "esds object type id %d\n", object_type_id
);
413 len
= mp4_read_descr(c
, pb
, &tag
);
414 if (tag
== MP4DecSpecificDescrTag
) {
415 dprintf(c
->fc
, "Specific MPEG4 header len=%d\n", len
);
416 if((uint64_t)len
> (1<<30))
418 st
->codec
->extradata
= av_mallocz(len
+ FF_INPUT_BUFFER_PADDING_SIZE
);
419 if (!st
->codec
->extradata
)
420 return AVERROR(ENOMEM
);
421 get_buffer(pb
, st
->codec
->extradata
, len
);
422 st
->codec
->extradata_size
= len
;
423 if (st
->codec
->codec_id
== CODEC_ID_AAC
) {
424 MPEG4AudioConfig cfg
;
425 ff_mpeg4audio_get_config(&cfg
, st
->codec
->extradata
,
426 st
->codec
->extradata_size
);
427 if (cfg
.chan_config
> 7)
429 st
->codec
->channels
= ff_mpeg4audio_channels
[cfg
.chan_config
];
430 if (cfg
.object_type
== 29 && cfg
.sampling_index
< 3) // old mp3on4
431 st
->codec
->sample_rate
= ff_mpa_freq_tab
[cfg
.sampling_index
];
433 st
->codec
->sample_rate
= cfg
.sample_rate
; // ext sample rate ?
434 dprintf(c
->fc
, "mp4a config channels %d obj %d ext obj %d "
435 "sample rate %d ext sample rate %d\n", st
->codec
->channels
,
436 cfg
.object_type
, cfg
.ext_object_type
,
437 cfg
.sample_rate
, cfg
.ext_sample_rate
);
438 if (!(st
->codec
->codec_id
= codec_get_id(mp4_audio_types
,
440 st
->codec
->codec_id
= CODEC_ID_AAC
;
447 static int mov_read_pasp(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
449 const int num
= get_be32(pb
);
450 const int den
= get_be32(pb
);
451 AVStream
* const st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
453 if ((st
->sample_aspect_ratio
.den
!= 1 || st
->sample_aspect_ratio
.num
) && // default
454 (den
!= st
->sample_aspect_ratio
.den
|| num
!= st
->sample_aspect_ratio
.num
))
455 av_log(c
->fc
, AV_LOG_WARNING
,
456 "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
457 st
->sample_aspect_ratio
.num
, st
->sample_aspect_ratio
.den
);
458 st
->sample_aspect_ratio
.num
= num
;
459 st
->sample_aspect_ratio
.den
= den
;
464 /* this atom contains actual media data */
465 static int mov_read_mdat(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
467 if(atom
.size
== 0) /* wrong one (MP4) */
470 return 0; /* now go for moov */
473 static int mov_read_ftyp(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
475 uint32_t type
= get_le32(pb
);
477 if (type
!= MKTAG('q','t',' ',' '))
479 av_log(c
->fc
, AV_LOG_DEBUG
, "ISO: File Type Major Brand: %.4s\n",(char *)&type
);
480 get_be32(pb
); /* minor version */
481 url_fskip(pb
, atom
.size
- 8);
485 /* this atom should contain all header atoms */
486 static int mov_read_moov(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
488 if (mov_read_default(c
, pb
, atom
) < 0)
490 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
491 /* so we don't parse the whole file if over a network */
493 return 0; /* now go for mdat */
496 static int mov_read_moof(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
498 c
->fragment
.moof_offset
= url_ftell(pb
) - 8;
499 dprintf(c
->fc
, "moof offset %llx\n", c
->fragment
.moof_offset
);
500 return mov_read_default(c
, pb
, atom
);
503 static int mov_read_mdhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
505 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
506 MOVStreamContext
*sc
= st
->priv_data
;
507 int version
= get_byte(pb
);
508 char language
[4] = {0};
512 return -1; /* unsupported */
514 get_be24(pb
); /* flags */
519 get_be32(pb
); /* creation time */
520 get_be32(pb
); /* modification time */
523 sc
->time_scale
= get_be32(pb
);
524 st
->duration
= (version
== 1) ? get_be64(pb
) : get_be32(pb
); /* duration */
526 lang
= get_be16(pb
); /* language */
527 if (ff_mov_lang_to_iso639(lang
, language
))
528 av_metadata_set(&st
->metadata
, "language", language
);
529 get_be16(pb
); /* quality */
534 static int mov_read_mvhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
536 int version
= get_byte(pb
); /* version */
537 get_be24(pb
); /* flags */
543 get_be32(pb
); /* creation time */
544 get_be32(pb
); /* modification time */
546 c
->time_scale
= get_be32(pb
); /* time scale */
548 dprintf(c
->fc
, "time scale = %i\n", c
->time_scale
);
550 c
->duration
= (version
== 1) ? get_be64(pb
) : get_be32(pb
); /* duration */
551 get_be32(pb
); /* preferred scale */
553 get_be16(pb
); /* preferred volume */
555 url_fskip(pb
, 10); /* reserved */
557 url_fskip(pb
, 36); /* display matrix */
559 get_be32(pb
); /* preview time */
560 get_be32(pb
); /* preview duration */
561 get_be32(pb
); /* poster time */
562 get_be32(pb
); /* selection time */
563 get_be32(pb
); /* selection duration */
564 get_be32(pb
); /* current time */
565 get_be32(pb
); /* next track ID */
570 static int mov_read_smi(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
572 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
574 if((uint64_t)atom
.size
> (1<<30))
577 // currently SVQ3 decoder expect full STSD header - so let's fake it
578 // this should be fixed and just SMI header should be passed
579 av_free(st
->codec
->extradata
);
580 st
->codec
->extradata
= av_mallocz(atom
.size
+ 0x5a + FF_INPUT_BUFFER_PADDING_SIZE
);
581 if (!st
->codec
->extradata
)
582 return AVERROR(ENOMEM
);
583 st
->codec
->extradata_size
= 0x5a + atom
.size
;
584 memcpy(st
->codec
->extradata
, "SVQ3", 4); // fake
585 get_buffer(pb
, st
->codec
->extradata
+ 0x5a, atom
.size
);
586 dprintf(c
->fc
, "Reading SMI %"PRId64
" %s\n", atom
.size
, st
->codec
->extradata
+ 0x5a);
590 static int mov_read_enda(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
592 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
593 int little_endian
= get_be16(pb
);
595 dprintf(c
->fc
, "enda %d\n", little_endian
);
596 if (little_endian
== 1) {
597 switch (st
->codec
->codec_id
) {
598 case CODEC_ID_PCM_S24BE
:
599 st
->codec
->codec_id
= CODEC_ID_PCM_S24LE
;
601 case CODEC_ID_PCM_S32BE
:
602 st
->codec
->codec_id
= CODEC_ID_PCM_S32LE
;
604 case CODEC_ID_PCM_F32BE
:
605 st
->codec
->codec_id
= CODEC_ID_PCM_F32LE
;
607 case CODEC_ID_PCM_F64BE
:
608 st
->codec
->codec_id
= CODEC_ID_PCM_F64LE
;
617 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
618 static int mov_read_extradata(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
624 if (c
->fc
->nb_streams
< 1) // will happen with jp2 files
626 st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
627 size
= (uint64_t)st
->codec
->extradata_size
+ atom
.size
+ 8 + FF_INPUT_BUFFER_PADDING_SIZE
;
628 if(size
> INT_MAX
|| (uint64_t)atom
.size
> INT_MAX
)
630 buf
= av_realloc(st
->codec
->extradata
, size
);
633 st
->codec
->extradata
= buf
;
634 buf
+= st
->codec
->extradata_size
;
635 st
->codec
->extradata_size
= size
- FF_INPUT_BUFFER_PADDING_SIZE
;
636 AV_WB32( buf
, atom
.size
+ 8);
637 AV_WL32( buf
+ 4, atom
.type
);
638 get_buffer(pb
, buf
+ 8, atom
.size
);
642 static int mov_read_wave(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
644 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
646 if((uint64_t)atom
.size
> (1<<30))
649 if (st
->codec
->codec_id
== CODEC_ID_QDM2
) {
650 // pass all frma atom to codec, needed at least for QDM2
651 av_free(st
->codec
->extradata
);
652 st
->codec
->extradata
= av_mallocz(atom
.size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
653 if (!st
->codec
->extradata
)
654 return AVERROR(ENOMEM
);
655 st
->codec
->extradata_size
= atom
.size
;
656 get_buffer(pb
, st
->codec
->extradata
, atom
.size
);
657 } else if (atom
.size
> 8) { /* to read frma, esds atoms */
658 if (mov_read_default(c
, pb
, atom
) < 0)
661 url_fskip(pb
, atom
.size
);
666 * This function reads atom content and puts data in extradata without tag
667 * nor size unlike mov_read_extradata.
669 static int mov_read_glbl(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
671 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
673 if((uint64_t)atom
.size
> (1<<30))
676 av_free(st
->codec
->extradata
);
677 st
->codec
->extradata
= av_mallocz(atom
.size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
678 if (!st
->codec
->extradata
)
679 return AVERROR(ENOMEM
);
680 st
->codec
->extradata_size
= atom
.size
;
681 get_buffer(pb
, st
->codec
->extradata
, atom
.size
);
685 static int mov_read_stco(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
687 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
688 MOVStreamContext
*sc
= st
->priv_data
;
689 unsigned int i
, entries
;
691 get_byte(pb
); /* version */
692 get_be24(pb
); /* flags */
694 entries
= get_be32(pb
);
696 if(entries
>= UINT_MAX
/sizeof(int64_t))
699 sc
->chunk_offsets
= av_malloc(entries
* sizeof(int64_t));
700 if (!sc
->chunk_offsets
)
701 return AVERROR(ENOMEM
);
702 sc
->chunk_count
= entries
;
704 if (atom
.type
== MKTAG('s','t','c','o'))
705 for(i
=0; i
<entries
; i
++)
706 sc
->chunk_offsets
[i
] = get_be32(pb
);
707 else if (atom
.type
== MKTAG('c','o','6','4'))
708 for(i
=0; i
<entries
; i
++)
709 sc
->chunk_offsets
[i
] = get_be64(pb
);
717 * Compute codec id for 'lpcm' tag.
718 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
720 static enum CodecID
mov_get_lpcm_codec_id(int bps
, int flags
)
722 if (flags
& 1) { // floating point
723 if (flags
& 2) { // big endian
724 if (bps
== 32) return CODEC_ID_PCM_F32BE
;
725 else if (bps
== 64) return CODEC_ID_PCM_F64BE
;
727 if (bps
== 32) return CODEC_ID_PCM_F32LE
;
728 else if (bps
== 64) return CODEC_ID_PCM_F64LE
;
734 if (flags
& 4) return CODEC_ID_PCM_S8
;
735 else return CODEC_ID_PCM_U8
;
736 else if (bps
== 16) return CODEC_ID_PCM_S16BE
;
737 else if (bps
== 24) return CODEC_ID_PCM_S24BE
;
738 else if (bps
== 32) return CODEC_ID_PCM_S32BE
;
741 if (flags
& 4) return CODEC_ID_PCM_S8
;
742 else return CODEC_ID_PCM_U8
;
743 else if (bps
== 16) return CODEC_ID_PCM_S16LE
;
744 else if (bps
== 24) return CODEC_ID_PCM_S24LE
;
745 else if (bps
== 32) return CODEC_ID_PCM_S32LE
;
748 return CODEC_ID_NONE
;
751 static int mov_read_stsd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
753 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
754 MOVStreamContext
*sc
= st
->priv_data
;
755 int j
, entries
, pseudo_stream_id
;
757 get_byte(pb
); /* version */
758 get_be24(pb
); /* flags */
760 entries
= get_be32(pb
);
762 for(pseudo_stream_id
=0; pseudo_stream_id
<entries
; pseudo_stream_id
++) {
763 //Parsing Sample description table
766 MOVAtom a
= { 0, 0, 0 };
767 int64_t start_pos
= url_ftell(pb
);
768 int size
= get_be32(pb
); /* size */
769 uint32_t format
= get_le32(pb
); /* data format */
771 get_be32(pb
); /* reserved */
772 get_be16(pb
); /* reserved */
773 dref_id
= get_be16(pb
);
775 if (st
->codec
->codec_tag
&&
776 st
->codec
->codec_tag
!= format
&&
777 (c
->fc
->video_codec_id
? codec_get_id(codec_movvideo_tags
, format
) != c
->fc
->video_codec_id
778 : st
->codec
->codec_tag
!= MKTAG('j','p','e','g'))
780 /* Multiple fourcc, we skip JPEG. This is not correct, we should
781 * export it as a separate AVStream but this needs a few changes
782 * in the MOV demuxer, patch welcome. */
783 av_log(c
->fc
, AV_LOG_WARNING
, "multiple fourcc not supported\n");
784 url_fskip(pb
, size
- (url_ftell(pb
) - start_pos
));
787 sc
->pseudo_stream_id
= st
->codec
->codec_tag
? -1 : pseudo_stream_id
;
788 sc
->dref_id
= dref_id
;
790 st
->codec
->codec_tag
= format
;
791 id
= codec_get_id(codec_movaudio_tags
, format
);
792 if (id
<=0 && (format
&0xFFFF) == 'm'+('s'<<8))
793 id
= codec_get_id(codec_wav_tags
, bswap_32(format
)&0xFFFF);
795 if (st
->codec
->codec_type
!= CODEC_TYPE_VIDEO
&& id
> 0) {
796 st
->codec
->codec_type
= CODEC_TYPE_AUDIO
;
797 } else if (st
->codec
->codec_type
!= CODEC_TYPE_AUDIO
&& /* do not overwrite codec type */
798 format
&& format
!= MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
799 id
= codec_get_id(codec_movvideo_tags
, format
);
801 id
= codec_get_id(codec_bmp_tags
, format
);
803 st
->codec
->codec_type
= CODEC_TYPE_VIDEO
;
804 else if(st
->codec
->codec_type
== CODEC_TYPE_DATA
){
805 id
= codec_get_id(ff_codec_movsubtitle_tags
, format
);
807 st
->codec
->codec_type
= CODEC_TYPE_SUBTITLE
;
811 dprintf(c
->fc
, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size
,
812 (format
>> 0) & 0xff, (format
>> 8) & 0xff, (format
>> 16) & 0xff,
813 (format
>> 24) & 0xff, st
->codec
->codec_type
);
815 if(st
->codec
->codec_type
==CODEC_TYPE_VIDEO
) {
816 uint8_t codec_name
[32];
817 unsigned int color_depth
;
820 st
->codec
->codec_id
= id
;
821 get_be16(pb
); /* version */
822 get_be16(pb
); /* revision level */
823 get_be32(pb
); /* vendor */
824 get_be32(pb
); /* temporal quality */
825 get_be32(pb
); /* spatial quality */
827 st
->codec
->width
= get_be16(pb
); /* width */
828 st
->codec
->height
= get_be16(pb
); /* height */
830 get_be32(pb
); /* horiz resolution */
831 get_be32(pb
); /* vert resolution */
832 get_be32(pb
); /* data size, always 0 */
833 get_be16(pb
); /* frames per samples */
835 get_buffer(pb
, codec_name
, 32); /* codec name, pascal string */
836 if (codec_name
[0] <= 31) {
837 memcpy(st
->codec
->codec_name
, &codec_name
[1],codec_name
[0]);
838 st
->codec
->codec_name
[codec_name
[0]] = 0;
841 st
->codec
->bits_per_coded_sample
= get_be16(pb
); /* depth */
842 st
->codec
->color_table_id
= get_be16(pb
); /* colortable id */
843 dprintf(c
->fc
, "depth %d, ctab id %d\n",
844 st
->codec
->bits_per_coded_sample
, st
->codec
->color_table_id
);
845 /* figure out the palette situation */
846 color_depth
= st
->codec
->bits_per_coded_sample
& 0x1F;
847 color_greyscale
= st
->codec
->bits_per_coded_sample
& 0x20;
849 /* if the depth is 2, 4, or 8 bpp, file is palettized */
850 if ((color_depth
== 2) || (color_depth
== 4) ||
851 (color_depth
== 8)) {
852 /* for palette traversal */
853 unsigned int color_start
, color_count
, color_end
;
854 unsigned char r
, g
, b
;
856 st
->codec
->palctrl
= av_malloc(sizeof(*st
->codec
->palctrl
));
857 if (color_greyscale
) {
858 int color_index
, color_dec
;
859 /* compute the greyscale palette */
860 st
->codec
->bits_per_coded_sample
= color_depth
;
861 color_count
= 1 << color_depth
;
863 color_dec
= 256 / (color_count
- 1);
864 for (j
= 0; j
< color_count
; j
++) {
865 r
= g
= b
= color_index
;
866 st
->codec
->palctrl
->palette
[j
] =
867 (r
<< 16) | (g
<< 8) | (b
);
868 color_index
-= color_dec
;
872 } else if (st
->codec
->color_table_id
) {
873 const uint8_t *color_table
;
874 /* if flag bit 3 is set, use the default palette */
875 color_count
= 1 << color_depth
;
876 if (color_depth
== 2)
877 color_table
= ff_qt_default_palette_4
;
878 else if (color_depth
== 4)
879 color_table
= ff_qt_default_palette_16
;
881 color_table
= ff_qt_default_palette_256
;
883 for (j
= 0; j
< color_count
; j
++) {
884 r
= color_table
[j
* 3 + 0];
885 g
= color_table
[j
* 3 + 1];
886 b
= color_table
[j
* 3 + 2];
887 st
->codec
->palctrl
->palette
[j
] =
888 (r
<< 16) | (g
<< 8) | (b
);
891 /* load the palette from the file */
892 color_start
= get_be32(pb
);
893 color_count
= get_be16(pb
);
894 color_end
= get_be16(pb
);
895 if ((color_start
<= 255) &&
896 (color_end
<= 255)) {
897 for (j
= color_start
; j
<= color_end
; j
++) {
898 /* each R, G, or B component is 16 bits;
899 * only use the top 8 bits; skip alpha bytes
909 st
->codec
->palctrl
->palette
[j
] =
910 (r
<< 16) | (g
<< 8) | (b
);
914 st
->codec
->palctrl
->palette_changed
= 1;
916 } else if(st
->codec
->codec_type
==CODEC_TYPE_AUDIO
) {
917 int bits_per_sample
, flags
;
918 uint16_t version
= get_be16(pb
);
920 st
->codec
->codec_id
= id
;
921 get_be16(pb
); /* revision level */
922 get_be32(pb
); /* vendor */
924 st
->codec
->channels
= get_be16(pb
); /* channel count */
925 dprintf(c
->fc
, "audio channels %d\n", st
->codec
->channels
);
926 st
->codec
->bits_per_coded_sample
= get_be16(pb
); /* sample size */
928 sc
->audio_cid
= get_be16(pb
);
929 get_be16(pb
); /* packet size = 0 */
931 st
->codec
->sample_rate
= ((get_be32(pb
) >> 16));
933 //Read QT version 1 fields. In version 0 these do not exist.
934 dprintf(c
->fc
, "version =%d, isom =%d\n",version
,c
->isom
);
937 sc
->samples_per_frame
= get_be32(pb
);
938 get_be32(pb
); /* bytes per packet */
939 sc
->bytes_per_frame
= get_be32(pb
);
940 get_be32(pb
); /* bytes per sample */
941 } else if(version
==2) {
942 get_be32(pb
); /* sizeof struct only */
943 st
->codec
->sample_rate
= av_int2dbl(get_be64(pb
)); /* float 64 */
944 st
->codec
->channels
= get_be32(pb
);
945 get_be32(pb
); /* always 0x7F000000 */
946 st
->codec
->bits_per_coded_sample
= get_be32(pb
); /* bits per channel if sound is uncompressed */
947 flags
= get_be32(pb
); /* lcpm format specific flag */
948 sc
->bytes_per_frame
= get_be32(pb
); /* bytes per audio packet if constant */
949 sc
->samples_per_frame
= get_be32(pb
); /* lpcm frames per audio packet if constant */
950 if (format
== MKTAG('l','p','c','m'))
951 st
->codec
->codec_id
= mov_get_lpcm_codec_id(st
->codec
->bits_per_coded_sample
, flags
);
955 switch (st
->codec
->codec_id
) {
956 case CODEC_ID_PCM_S8
:
957 case CODEC_ID_PCM_U8
:
958 if (st
->codec
->bits_per_coded_sample
== 16)
959 st
->codec
->codec_id
= CODEC_ID_PCM_S16BE
;
961 case CODEC_ID_PCM_S16LE
:
962 case CODEC_ID_PCM_S16BE
:
963 if (st
->codec
->bits_per_coded_sample
== 8)
964 st
->codec
->codec_id
= CODEC_ID_PCM_S8
;
965 else if (st
->codec
->bits_per_coded_sample
== 24)
966 st
->codec
->codec_id
=
967 st
->codec
->codec_id
== CODEC_ID_PCM_S16BE
?
968 CODEC_ID_PCM_S24BE
: CODEC_ID_PCM_S24LE
;
970 /* set values for old format before stsd version 1 appeared */
972 sc
->samples_per_frame
= 6;
973 sc
->bytes_per_frame
= 2*st
->codec
->channels
;
976 sc
->samples_per_frame
= 6;
977 sc
->bytes_per_frame
= 1*st
->codec
->channels
;
979 case CODEC_ID_ADPCM_IMA_QT
:
980 sc
->samples_per_frame
= 64;
981 sc
->bytes_per_frame
= 34*st
->codec
->channels
;
984 sc
->samples_per_frame
= 160;
985 sc
->bytes_per_frame
= 33;
991 bits_per_sample
= av_get_bits_per_sample(st
->codec
->codec_id
);
992 if (bits_per_sample
) {
993 st
->codec
->bits_per_coded_sample
= bits_per_sample
;
994 sc
->sample_size
= (bits_per_sample
>> 3) * st
->codec
->channels
;
996 } else if(st
->codec
->codec_type
==CODEC_TYPE_SUBTITLE
){
997 // ttxt stsd contains display flags, justification, background
998 // color, fonts, and default styles, so fake an atom to read it
999 MOVAtom fake_atom
= { .size
= size
- (url_ftell(pb
) - start_pos
) };
1000 if (format
!= AV_RL32("mp4s")) // mp4s contains a regular esds atom
1001 mov_read_glbl(c
, pb
, fake_atom
);
1002 st
->codec
->codec_id
= id
;
1003 st
->codec
->width
= sc
->width
;
1004 st
->codec
->height
= sc
->height
;
1006 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1007 url_fskip(pb
, size
- (url_ftell(pb
) - start_pos
));
1009 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1010 a
.size
= size
- (url_ftell(pb
) - start_pos
);
1012 if (mov_read_default(c
, pb
, a
) < 0)
1014 } else if (a
.size
> 0)
1015 url_fskip(pb
, a
.size
);
1018 if(st
->codec
->codec_type
==CODEC_TYPE_AUDIO
&& st
->codec
->sample_rate
==0 && sc
->time_scale
>1)
1019 st
->codec
->sample_rate
= sc
->time_scale
;
1021 /* special codec parameters handling */
1022 switch (st
->codec
->codec_id
) {
1023 #if CONFIG_DV_DEMUXER
1024 case CODEC_ID_DVAUDIO
:
1025 c
->dv_fctx
= avformat_alloc_context();
1026 c
->dv_demux
= dv_init_demux(c
->dv_fctx
);
1028 av_log(c
->fc
, AV_LOG_ERROR
, "dv demux context init error\n");
1031 sc
->dv_audio_container
= 1;
1032 st
->codec
->codec_id
= CODEC_ID_PCM_S16LE
;
1035 /* no ifdef since parameters are always those */
1036 case CODEC_ID_QCELP
:
1037 // force sample rate for qcelp when not stored in mov
1038 if (st
->codec
->codec_tag
!= MKTAG('Q','c','l','p'))
1039 st
->codec
->sample_rate
= 8000;
1040 st
->codec
->frame_size
= 160;
1041 st
->codec
->channels
= 1; /* really needed */
1043 case CODEC_ID_AMR_NB
:
1044 case CODEC_ID_AMR_WB
:
1045 st
->codec
->frame_size
= sc
->samples_per_frame
;
1046 st
->codec
->channels
= 1; /* really needed */
1047 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1048 if (st
->codec
->codec_id
== CODEC_ID_AMR_NB
)
1049 st
->codec
->sample_rate
= 8000;
1050 else if (st
->codec
->codec_id
== CODEC_ID_AMR_WB
)
1051 st
->codec
->sample_rate
= 16000;
1055 st
->codec
->codec_type
= CODEC_TYPE_AUDIO
; /* force type after stsd for m1a hdlr */
1056 st
->need_parsing
= AVSTREAM_PARSE_FULL
;
1059 case CODEC_ID_ADPCM_MS
:
1060 case CODEC_ID_ADPCM_IMA_WAV
:
1061 st
->codec
->block_align
= sc
->bytes_per_frame
;
1064 if (st
->codec
->extradata_size
== 36) {
1065 st
->codec
->frame_size
= AV_RB32(st
->codec
->extradata
+12);
1066 st
->codec
->channels
= AV_RB8 (st
->codec
->extradata
+21);
1076 static int mov_read_stsc(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1078 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1079 MOVStreamContext
*sc
= st
->priv_data
;
1080 unsigned int i
, entries
;
1082 get_byte(pb
); /* version */
1083 get_be24(pb
); /* flags */
1085 entries
= get_be32(pb
);
1087 dprintf(c
->fc
, "track[%i].stsc.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1089 if(entries
>= UINT_MAX
/ sizeof(*sc
->stsc_data
))
1091 sc
->stsc_data
= av_malloc(entries
* sizeof(*sc
->stsc_data
));
1093 return AVERROR(ENOMEM
);
1094 sc
->stsc_count
= entries
;
1096 for(i
=0; i
<entries
; i
++) {
1097 sc
->stsc_data
[i
].first
= get_be32(pb
);
1098 sc
->stsc_data
[i
].count
= get_be32(pb
);
1099 sc
->stsc_data
[i
].id
= get_be32(pb
);
1104 static int mov_read_stss(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1106 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1107 MOVStreamContext
*sc
= st
->priv_data
;
1108 unsigned int i
, entries
;
1110 get_byte(pb
); /* version */
1111 get_be24(pb
); /* flags */
1113 entries
= get_be32(pb
);
1115 dprintf(c
->fc
, "keyframe_count = %d\n", entries
);
1117 if(entries
>= UINT_MAX
/ sizeof(int))
1119 sc
->keyframes
= av_malloc(entries
* sizeof(int));
1121 return AVERROR(ENOMEM
);
1122 sc
->keyframe_count
= entries
;
1124 for(i
=0; i
<entries
; i
++) {
1125 sc
->keyframes
[i
] = get_be32(pb
);
1126 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1131 static int mov_read_stsz(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1133 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1134 MOVStreamContext
*sc
= st
->priv_data
;
1135 unsigned int i
, entries
, sample_size
, field_size
, num_bytes
;
1139 get_byte(pb
); /* version */
1140 get_be24(pb
); /* flags */
1142 if (atom
.type
== MKTAG('s','t','s','z')) {
1143 sample_size
= get_be32(pb
);
1144 if (!sc
->sample_size
) /* do not overwrite value computed in stsd */
1145 sc
->sample_size
= sample_size
;
1149 get_be24(pb
); /* reserved */
1150 field_size
= get_byte(pb
);
1152 entries
= get_be32(pb
);
1154 dprintf(c
->fc
, "sample_size = %d sample_count = %d\n", sc
->sample_size
, entries
);
1156 sc
->sample_count
= entries
;
1160 if (field_size
!= 4 && field_size
!= 8 && field_size
!= 16 && field_size
!= 32) {
1161 av_log(c
->fc
, AV_LOG_ERROR
, "Invalid sample field size %d\n", field_size
);
1165 if(entries
>= UINT_MAX
/ sizeof(int))
1167 sc
->sample_sizes
= av_malloc(entries
* sizeof(int));
1168 if (!sc
->sample_sizes
)
1169 return AVERROR(ENOMEM
);
1171 num_bytes
= (entries
*field_size
+4)>>3;
1173 buf
= av_malloc(num_bytes
+FF_INPUT_BUFFER_PADDING_SIZE
);
1175 av_freep(&sc
->sample_sizes
);
1176 return AVERROR(ENOMEM
);
1179 if (get_buffer(pb
, buf
, num_bytes
) < num_bytes
) {
1180 av_freep(&sc
->sample_sizes
);
1185 init_get_bits(&gb
, buf
, 8*num_bytes
);
1187 for(i
=0; i
<entries
; i
++)
1188 sc
->sample_sizes
[i
] = get_bits_long(&gb
, field_size
);
1194 static int mov_read_stts(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1196 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1197 MOVStreamContext
*sc
= st
->priv_data
;
1198 unsigned int i
, entries
;
1200 int64_t total_sample_count
=0;
1202 get_byte(pb
); /* version */
1203 get_be24(pb
); /* flags */
1204 entries
= get_be32(pb
);
1206 dprintf(c
->fc
, "track[%i].stts.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1208 if(entries
>= UINT_MAX
/ sizeof(*sc
->stts_data
))
1210 sc
->stts_data
= av_malloc(entries
* sizeof(*sc
->stts_data
));
1212 return AVERROR(ENOMEM
);
1213 sc
->stts_count
= entries
;
1215 for(i
=0; i
<entries
; i
++) {
1216 int sample_duration
;
1219 sample_count
=get_be32(pb
);
1220 sample_duration
= get_be32(pb
);
1221 sc
->stts_data
[i
].count
= sample_count
;
1222 sc
->stts_data
[i
].duration
= sample_duration
;
1224 sc
->time_rate
= av_gcd(sc
->time_rate
, sample_duration
);
1226 dprintf(c
->fc
, "sample_count=%d, sample_duration=%d\n",sample_count
,sample_duration
);
1228 duration
+=(int64_t)sample_duration
*sample_count
;
1229 total_sample_count
+=sample_count
;
1232 st
->nb_frames
= total_sample_count
;
1234 st
->duration
= duration
;
1238 static int mov_read_ctts(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1240 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1241 MOVStreamContext
*sc
= st
->priv_data
;
1242 unsigned int i
, entries
;
1244 get_byte(pb
); /* version */
1245 get_be24(pb
); /* flags */
1246 entries
= get_be32(pb
);
1248 dprintf(c
->fc
, "track[%i].ctts.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1250 if(entries
>= UINT_MAX
/ sizeof(*sc
->ctts_data
))
1252 sc
->ctts_data
= av_malloc(entries
* sizeof(*sc
->ctts_data
));
1254 return AVERROR(ENOMEM
);
1255 sc
->ctts_count
= entries
;
1257 for(i
=0; i
<entries
; i
++) {
1258 int count
=get_be32(pb
);
1259 int duration
=get_be32(pb
);
1263 st
->codec
->has_b_frames
= 1;
1265 sc
->ctts_data
[i
].count
= count
;
1266 sc
->ctts_data
[i
].duration
= duration
;
1268 sc
->time_rate
= av_gcd(sc
->time_rate
, FFABS(duration
));
1273 static void mov_build_index(MOVContext
*mov
, AVStream
*st
)
1275 MOVStreamContext
*sc
= st
->priv_data
;
1276 int64_t current_offset
;
1277 int64_t current_dts
= 0;
1278 unsigned int stts_index
= 0;
1279 unsigned int stsc_index
= 0;
1280 unsigned int stss_index
= 0;
1283 /* adjust first dts according to edit list */
1284 if (sc
->time_offset
) {
1285 int rescaled
= sc
->time_offset
< 0 ? av_rescale(sc
->time_offset
, sc
->time_scale
, mov
->time_scale
) : sc
->time_offset
;
1286 assert(sc
->time_offset
% sc
->time_rate
== 0);
1287 current_dts
= - (rescaled
/ sc
->time_rate
);
1288 if (sc
->ctts_data
&& sc
->ctts_data
[0].duration
/ sc
->stts_data
[0].duration
> 16) {
1289 /* more than 16 frames delay, dts are likely wrong
1290 this happens with files created by iMovie */
1292 st
->codec
->has_b_frames
= 1;
1296 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1297 if (!(st
->codec
->codec_type
== CODEC_TYPE_AUDIO
&&
1298 sc
->stts_count
== 1 && sc
->stts_data
[0].duration
== 1)) {
1299 unsigned int current_sample
= 0;
1300 unsigned int stts_sample
= 0;
1301 unsigned int keyframe
, sample_size
;
1302 unsigned int distance
= 0;
1303 int key_off
= sc
->keyframes
&& sc
->keyframes
[0] == 1;
1305 st
->nb_frames
= sc
->sample_count
;
1306 for (i
= 0; i
< sc
->chunk_count
; i
++) {
1307 current_offset
= sc
->chunk_offsets
[i
];
1308 if (stsc_index
+ 1 < sc
->stsc_count
&&
1309 i
+ 1 == sc
->stsc_data
[stsc_index
+ 1].first
)
1311 for (j
= 0; j
< sc
->stsc_data
[stsc_index
].count
; j
++) {
1312 if (current_sample
>= sc
->sample_count
) {
1313 av_log(mov
->fc
, AV_LOG_ERROR
, "wrong sample count\n");
1316 keyframe
= !sc
->keyframe_count
|| current_sample
+key_off
== sc
->keyframes
[stss_index
];
1319 if (stss_index
+ 1 < sc
->keyframe_count
)
1322 sample_size
= sc
->sample_size
> 0 ? sc
->sample_size
: sc
->sample_sizes
[current_sample
];
1323 if(sc
->pseudo_stream_id
== -1 ||
1324 sc
->stsc_data
[stsc_index
].id
- 1 == sc
->pseudo_stream_id
) {
1325 av_add_index_entry(st
, current_offset
, current_dts
, sample_size
, distance
,
1326 keyframe
? AVINDEX_KEYFRAME
: 0);
1327 dprintf(mov
->fc
, "AVIndex stream %d, sample %d, offset %"PRIx64
", dts %"PRId64
", "
1328 "size %d, distance %d, keyframe %d\n", st
->index
, current_sample
,
1329 current_offset
, current_dts
, sample_size
, distance
, keyframe
);
1332 current_offset
+= sample_size
;
1333 assert(sc
->stts_data
[stts_index
].duration
% sc
->time_rate
== 0);
1334 current_dts
+= sc
->stts_data
[stts_index
].duration
/ sc
->time_rate
;
1338 if (stts_index
+ 1 < sc
->stts_count
&& stts_sample
== sc
->stts_data
[stts_index
].count
) {
1344 } else { /* read whole chunk */
1345 unsigned int chunk_samples
, chunk_size
, chunk_duration
;
1346 unsigned int frames
= 1;
1347 for (i
= 0; i
< sc
->chunk_count
; i
++) {
1348 current_offset
= sc
->chunk_offsets
[i
];
1349 if (stsc_index
+ 1 < sc
->stsc_count
&&
1350 i
+ 1 == sc
->stsc_data
[stsc_index
+ 1].first
)
1352 chunk_samples
= sc
->stsc_data
[stsc_index
].count
;
1353 /* get chunk size, beware of alaw/ulaw/mace */
1354 if (sc
->samples_per_frame
> 0 &&
1355 (chunk_samples
* sc
->bytes_per_frame
% sc
->samples_per_frame
== 0)) {
1356 if (sc
->samples_per_frame
< 160)
1357 chunk_size
= chunk_samples
* sc
->bytes_per_frame
/ sc
->samples_per_frame
;
1359 chunk_size
= sc
->bytes_per_frame
;
1360 frames
= chunk_samples
/ sc
->samples_per_frame
;
1361 chunk_samples
= sc
->samples_per_frame
;
1364 chunk_size
= chunk_samples
* sc
->sample_size
;
1365 for (j
= 0; j
< frames
; j
++) {
1366 av_add_index_entry(st
, current_offset
, current_dts
, chunk_size
, 0, AVINDEX_KEYFRAME
);
1367 /* get chunk duration */
1369 while (chunk_samples
> 0) {
1370 if (chunk_samples
< sc
->stts_data
[stts_index
].count
) {
1371 chunk_duration
+= sc
->stts_data
[stts_index
].duration
* chunk_samples
;
1372 sc
->stts_data
[stts_index
].count
-= chunk_samples
;
1375 chunk_duration
+= sc
->stts_data
[stts_index
].duration
* chunk_samples
;
1376 chunk_samples
-= sc
->stts_data
[stts_index
].count
;
1377 if (stts_index
+ 1 < sc
->stts_count
)
1381 current_offset
+= sc
->bytes_per_frame
;
1382 dprintf(mov
->fc
, "AVIndex stream %d, chunk %d, offset %"PRIx64
", dts %"PRId64
", "
1383 "size %d, duration %d\n", st
->index
, i
, current_offset
, current_dts
,
1384 chunk_size
, chunk_duration
);
1385 assert(chunk_duration
% sc
->time_rate
== 0);
1386 current_dts
+= chunk_duration
/ sc
->time_rate
;
1392 static int mov_read_trak(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1395 MOVStreamContext
*sc
;
1398 st
= av_new_stream(c
->fc
, c
->fc
->nb_streams
);
1399 if (!st
) return AVERROR(ENOMEM
);
1400 sc
= av_mallocz(sizeof(MOVStreamContext
));
1401 if (!sc
) return AVERROR(ENOMEM
);
1404 st
->codec
->codec_type
= CODEC_TYPE_DATA
;
1405 sc
->ffindex
= st
->index
;
1407 if ((ret
= mov_read_default(c
, pb
, atom
)) < 0)
1411 if (sc
->chunk_count
&& (!sc
->stts_count
|| !sc
->stsc_count
||
1412 (!sc
->sample_size
&& !sc
->sample_count
))) {
1413 av_log(c
->fc
, AV_LOG_ERROR
, "stream %d, missing mandatory atoms, broken header\n",
1420 if (!sc
->time_scale
)
1421 sc
->time_scale
= c
->time_scale
;
1423 av_set_pts_info(st
, 64, sc
->time_rate
, sc
->time_scale
);
1425 if (st
->codec
->codec_type
== CODEC_TYPE_AUDIO
&&
1426 !st
->codec
->frame_size
&& sc
->stts_count
== 1) {
1427 st
->codec
->frame_size
= av_rescale(sc
->stts_data
[0].duration
,
1428 st
->codec
->sample_rate
, sc
->time_scale
);
1429 dprintf(c
->fc
, "frame size %d\n", st
->codec
->frame_size
);
1432 if (st
->duration
!= AV_NOPTS_VALUE
) {
1433 assert(st
->duration
% sc
->time_rate
== 0);
1434 st
->duration
/= sc
->time_rate
;
1437 mov_build_index(c
, st
);
1439 if (sc
->dref_id
-1 < sc
->drefs_count
&& sc
->drefs
[sc
->dref_id
-1].path
) {
1440 if (url_fopen(&sc
->pb
, sc
->drefs
[sc
->dref_id
-1].path
, URL_RDONLY
) < 0)
1441 av_log(c
->fc
, AV_LOG_ERROR
, "stream %d, error opening file %s: %s\n",
1442 st
->index
, sc
->drefs
[sc
->dref_id
-1].path
, strerror(errno
));
1446 switch (st
->codec
->codec_id
) {
1447 #if CONFIG_H261_DECODER
1450 #if CONFIG_H263_DECODER
1453 #if CONFIG_H264_DECODER
1456 #if CONFIG_MPEG4_DECODER
1457 case CODEC_ID_MPEG4
:
1459 st
->codec
->width
= 0; /* let decoder init width/height */
1460 st
->codec
->height
= 0;
1464 /* Do not need those anymore. */
1465 av_freep(&sc
->chunk_offsets
);
1466 av_freep(&sc
->stsc_data
);
1467 av_freep(&sc
->sample_sizes
);
1468 av_freep(&sc
->keyframes
);
1469 av_freep(&sc
->stts_data
);
1474 static int mov_read_ilst(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1477 c
->itunes_metadata
= 1;
1478 ret
= mov_read_default(c
, pb
, atom
);
1479 c
->itunes_metadata
= 0;
1483 static int mov_read_meta(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1485 while (atom
.size
> 8) {
1486 uint32_t tag
= get_le32(pb
);
1488 if (tag
== MKTAG('h','d','l','r')) {
1489 url_fseek(pb
, -8, SEEK_CUR
);
1491 return mov_read_default(c
, pb
, atom
);
1497 static int mov_read_tkhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1502 int64_t disp_transform
[2];
1503 int display_matrix
[3][2];
1504 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1505 MOVStreamContext
*sc
= st
->priv_data
;
1506 int version
= get_byte(pb
);
1508 get_be24(pb
); /* flags */
1510 MOV_TRACK_ENABLED 0x0001
1511 MOV_TRACK_IN_MOVIE 0x0002
1512 MOV_TRACK_IN_PREVIEW 0x0004
1513 MOV_TRACK_IN_POSTER 0x0008
1520 get_be32(pb
); /* creation time */
1521 get_be32(pb
); /* modification time */
1523 st
->id
= (int)get_be32(pb
); /* track id (NOT 0 !)*/
1524 get_be32(pb
); /* reserved */
1526 /* highlevel (considering edits) duration in movie timebase */
1527 (version
== 1) ? get_be64(pb
) : get_be32(pb
);
1528 get_be32(pb
); /* reserved */
1529 get_be32(pb
); /* reserved */
1531 get_be16(pb
); /* layer */
1532 get_be16(pb
); /* alternate group */
1533 get_be16(pb
); /* volume */
1534 get_be16(pb
); /* reserved */
1536 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1537 // they're kept in fixed point format through all calculations
1538 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1539 for (i
= 0; i
< 3; i
++) {
1540 display_matrix
[i
][0] = get_be32(pb
); // 16.16 fixed point
1541 display_matrix
[i
][1] = get_be32(pb
); // 16.16 fixed point
1542 get_be32(pb
); // 2.30 fixed point (not used)
1545 width
= get_be32(pb
); // 16.16 fixed point track width
1546 height
= get_be32(pb
); // 16.16 fixed point track height
1547 sc
->width
= width
>> 16;
1548 sc
->height
= height
>> 16;
1550 //transform the display width/height according to the matrix
1551 // skip this if the display matrix is the default identity matrix
1552 // to keep the same scale, use [width height 1<<16]
1553 if (width
&& height
&&
1554 (display_matrix
[0][0] != 65536 || display_matrix
[0][1] ||
1555 display_matrix
[1][0] || display_matrix
[1][1] != 65536 ||
1556 display_matrix
[2][0] || display_matrix
[2][1])) {
1557 for (i
= 0; i
< 2; i
++)
1559 (int64_t) width
* display_matrix
[0][i
] +
1560 (int64_t) height
* display_matrix
[1][i
] +
1561 ((int64_t) display_matrix
[2][i
] << 16);
1563 //sample aspect ratio is new width/height divided by old width/height
1564 st
->sample_aspect_ratio
= av_d2q(
1565 ((double) disp_transform
[0] * height
) /
1566 ((double) disp_transform
[1] * width
), INT_MAX
);
1571 static int mov_read_tfhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1573 MOVFragment
*frag
= &c
->fragment
;
1574 MOVTrackExt
*trex
= NULL
;
1575 int flags
, track_id
, i
;
1577 get_byte(pb
); /* version */
1578 flags
= get_be24(pb
);
1580 track_id
= get_be32(pb
);
1583 frag
->track_id
= track_id
;
1584 for (i
= 0; i
< c
->trex_count
; i
++)
1585 if (c
->trex_data
[i
].track_id
== frag
->track_id
) {
1586 trex
= &c
->trex_data
[i
];
1590 av_log(c
->fc
, AV_LOG_ERROR
, "could not find corresponding trex\n");
1594 if (flags
& 0x01) frag
->base_data_offset
= get_be64(pb
);
1595 else frag
->base_data_offset
= frag
->moof_offset
;
1596 if (flags
& 0x02) frag
->stsd_id
= get_be32(pb
);
1597 else frag
->stsd_id
= trex
->stsd_id
;
1599 frag
->duration
= flags
& 0x08 ? get_be32(pb
) : trex
->duration
;
1600 frag
->size
= flags
& 0x10 ? get_be32(pb
) : trex
->size
;
1601 frag
->flags
= flags
& 0x20 ? get_be32(pb
) : trex
->flags
;
1602 dprintf(c
->fc
, "frag flags 0x%x\n", frag
->flags
);
1606 static int mov_read_trex(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1610 if ((uint64_t)c
->trex_count
+1 >= UINT_MAX
/ sizeof(*c
->trex_data
))
1612 trex
= av_realloc(c
->trex_data
, (c
->trex_count
+1)*sizeof(*c
->trex_data
));
1614 return AVERROR(ENOMEM
);
1615 c
->trex_data
= trex
;
1616 trex
= &c
->trex_data
[c
->trex_count
++];
1617 get_byte(pb
); /* version */
1618 get_be24(pb
); /* flags */
1619 trex
->track_id
= get_be32(pb
);
1620 trex
->stsd_id
= get_be32(pb
);
1621 trex
->duration
= get_be32(pb
);
1622 trex
->size
= get_be32(pb
);
1623 trex
->flags
= get_be32(pb
);
1627 static int mov_read_trun(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1629 MOVFragment
*frag
= &c
->fragment
;
1630 AVStream
*st
= NULL
;
1631 MOVStreamContext
*sc
;
1634 int data_offset
= 0;
1635 unsigned entries
, first_sample_flags
= frag
->flags
;
1636 int flags
, distance
, i
;
1638 for (i
= 0; i
< c
->fc
->nb_streams
; i
++) {
1639 if (c
->fc
->streams
[i
]->id
== frag
->track_id
) {
1640 st
= c
->fc
->streams
[i
];
1645 av_log(c
->fc
, AV_LOG_ERROR
, "could not find corresponding track id %d\n", frag
->track_id
);
1649 if (sc
->pseudo_stream_id
+1 != frag
->stsd_id
)
1651 get_byte(pb
); /* version */
1652 flags
= get_be24(pb
);
1653 entries
= get_be32(pb
);
1654 dprintf(c
->fc
, "flags 0x%x entries %d\n", flags
, entries
);
1655 if (flags
& 0x001) data_offset
= get_be32(pb
);
1656 if (flags
& 0x004) first_sample_flags
= get_be32(pb
);
1657 if (flags
& 0x800) {
1659 if ((uint64_t)entries
+sc
->ctts_count
>= UINT_MAX
/sizeof(*sc
->ctts_data
))
1661 ctts_data
= av_realloc(sc
->ctts_data
,
1662 (entries
+sc
->ctts_count
)*sizeof(*sc
->ctts_data
));
1664 return AVERROR(ENOMEM
);
1665 sc
->ctts_data
= ctts_data
;
1668 offset
= frag
->base_data_offset
+ data_offset
;
1670 dprintf(c
->fc
, "first sample flags 0x%x\n", first_sample_flags
);
1671 for (i
= 0; i
< entries
; i
++) {
1672 unsigned sample_size
= frag
->size
;
1673 int sample_flags
= i
? frag
->flags
: first_sample_flags
;
1674 unsigned sample_duration
= frag
->duration
;
1677 if (flags
& 0x100) sample_duration
= get_be32(pb
);
1678 if (flags
& 0x200) sample_size
= get_be32(pb
);
1679 if (flags
& 0x400) sample_flags
= get_be32(pb
);
1680 if (flags
& 0x800) {
1681 sc
->ctts_data
[sc
->ctts_count
].count
= 1;
1682 sc
->ctts_data
[sc
->ctts_count
].duration
= get_be32(pb
);
1685 if ((keyframe
= st
->codec
->codec_type
== CODEC_TYPE_AUDIO
||
1686 (flags
& 0x004 && !i
&& !sample_flags
) || sample_flags
& 0x2000000))
1688 av_add_index_entry(st
, offset
, dts
, sample_size
, distance
,
1689 keyframe
? AVINDEX_KEYFRAME
: 0);
1690 dprintf(c
->fc
, "AVIndex stream %d, sample %d, offset %"PRIx64
", dts %"PRId64
", "
1691 "size %d, distance %d, keyframe %d\n", st
->index
, sc
->sample_count
+i
,
1692 offset
, dts
, sample_size
, distance
, keyframe
);
1694 assert(sample_duration
% sc
->time_rate
== 0);
1695 dts
+= sample_duration
/ sc
->time_rate
;
1696 offset
+= sample_size
;
1698 frag
->moof_offset
= offset
;
1703 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1704 /* like the files created with Adobe Premiere 5.0, for samples see */
1705 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1706 static int mov_read_wide(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1711 return 0; /* continue */
1712 if (get_be32(pb
) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1713 url_fskip(pb
, atom
.size
- 4);
1716 atom
.type
= get_le32(pb
);
1719 if (atom
.type
!= MKTAG('m','d','a','t')) {
1720 url_fskip(pb
, atom
.size
);
1723 err
= mov_read_mdat(c
, pb
, atom
);
1727 static int mov_read_cmov(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1732 uint8_t *moov_data
; /* uncompressed data */
1733 long cmov_len
, moov_len
;
1736 get_be32(pb
); /* dcom atom */
1737 if (get_le32(pb
) != MKTAG('d','c','o','m'))
1739 if (get_le32(pb
) != MKTAG('z','l','i','b')) {
1740 av_log(c
->fc
, AV_LOG_ERROR
, "unknown compression for cmov atom !");
1743 get_be32(pb
); /* cmvd atom */
1744 if (get_le32(pb
) != MKTAG('c','m','v','d'))
1746 moov_len
= get_be32(pb
); /* uncompressed size */
1747 cmov_len
= atom
.size
- 6 * 4;
1749 cmov_data
= av_malloc(cmov_len
);
1751 return AVERROR(ENOMEM
);
1752 moov_data
= av_malloc(moov_len
);
1755 return AVERROR(ENOMEM
);
1757 get_buffer(pb
, cmov_data
, cmov_len
);
1758 if(uncompress (moov_data
, (uLongf
*) &moov_len
, (const Bytef
*)cmov_data
, cmov_len
) != Z_OK
)
1759 goto free_and_return
;
1760 if(init_put_byte(&ctx
, moov_data
, moov_len
, 0, NULL
, NULL
, NULL
, NULL
) != 0)
1761 goto free_and_return
;
1762 atom
.type
= MKTAG('m','o','o','v');
1764 atom
.size
= moov_len
;
1766 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1768 ret
= mov_read_default(c
, &ctx
, atom
);
1774 av_log(c
->fc
, AV_LOG_ERROR
, "this file requires zlib support compiled in\n");
1779 /* edit list atom */
1780 static int mov_read_elst(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1782 MOVStreamContext
*sc
= c
->fc
->streams
[c
->fc
->nb_streams
-1]->priv_data
;
1785 get_byte(pb
); /* version */
1786 get_be24(pb
); /* flags */
1787 edit_count
= get_be32(pb
); /* entries */
1789 for(i
=0; i
<edit_count
; i
++){
1791 int duration
= get_be32(pb
); /* Track duration */
1792 time
= get_be32(pb
); /* Media time */
1793 get_be32(pb
); /* Media rate */
1794 if (i
== 0 && time
>= -1) {
1795 sc
->time_offset
= time
!= -1 ? time
: -duration
;
1796 sc
->time_rate
= av_gcd(sc
->time_rate
, FFABS(sc
->time_offset
));
1801 av_log(c
->fc
, AV_LOG_WARNING
, "multiple edit list entries, "
1802 "a/v desync might occur, patch welcome\n");
1804 dprintf(c
->fc
, "track[%i].edit_count = %i\n", c
->fc
->nb_streams
-1, edit_count
);
1808 static const MOVParseTableEntry mov_default_parse_table
[] = {
1809 { MKTAG('a','v','s','s'), mov_read_extradata
},
1810 { MKTAG('c','o','6','4'), mov_read_stco
},
1811 { MKTAG('c','t','t','s'), mov_read_ctts
}, /* composition time to sample */
1812 { MKTAG('d','i','n','f'), mov_read_default
},
1813 { MKTAG('d','r','e','f'), mov_read_dref
},
1814 { MKTAG('e','d','t','s'), mov_read_default
},
1815 { MKTAG('e','l','s','t'), mov_read_elst
},
1816 { MKTAG('e','n','d','a'), mov_read_enda
},
1817 { MKTAG('f','i','e','l'), mov_read_extradata
},
1818 { MKTAG('f','t','y','p'), mov_read_ftyp
},
1819 { MKTAG('g','l','b','l'), mov_read_glbl
},
1820 { MKTAG('h','d','l','r'), mov_read_hdlr
},
1821 { MKTAG('i','l','s','t'), mov_read_ilst
},
1822 { MKTAG('j','p','2','h'), mov_read_extradata
},
1823 { MKTAG('m','d','a','t'), mov_read_mdat
},
1824 { MKTAG('m','d','h','d'), mov_read_mdhd
},
1825 { MKTAG('m','d','i','a'), mov_read_default
},
1826 { MKTAG('m','e','t','a'), mov_read_meta
},
1827 { MKTAG('m','i','n','f'), mov_read_default
},
1828 { MKTAG('m','o','o','f'), mov_read_moof
},
1829 { MKTAG('m','o','o','v'), mov_read_moov
},
1830 { MKTAG('m','v','e','x'), mov_read_default
},
1831 { MKTAG('m','v','h','d'), mov_read_mvhd
},
1832 { MKTAG('S','M','I',' '), mov_read_smi
}, /* Sorenson extension ??? */
1833 { MKTAG('a','l','a','c'), mov_read_extradata
}, /* alac specific atom */
1834 { MKTAG('a','v','c','C'), mov_read_glbl
},
1835 { MKTAG('p','a','s','p'), mov_read_pasp
},
1836 { MKTAG('s','t','b','l'), mov_read_default
},
1837 { MKTAG('s','t','c','o'), mov_read_stco
},
1838 { MKTAG('s','t','s','c'), mov_read_stsc
},
1839 { MKTAG('s','t','s','d'), mov_read_stsd
}, /* sample description */
1840 { MKTAG('s','t','s','s'), mov_read_stss
}, /* sync sample */
1841 { MKTAG('s','t','s','z'), mov_read_stsz
}, /* sample size */
1842 { MKTAG('s','t','t','s'), mov_read_stts
},
1843 { MKTAG('s','t','z','2'), mov_read_stsz
}, /* compact sample size */
1844 { MKTAG('t','k','h','d'), mov_read_tkhd
}, /* track header */
1845 { MKTAG('t','f','h','d'), mov_read_tfhd
}, /* track fragment header */
1846 { MKTAG('t','r','a','k'), mov_read_trak
},
1847 { MKTAG('t','r','a','f'), mov_read_default
},
1848 { MKTAG('t','r','e','x'), mov_read_trex
},
1849 { MKTAG('t','r','u','n'), mov_read_trun
},
1850 { MKTAG('u','d','t','a'), mov_read_default
},
1851 { MKTAG('w','a','v','e'), mov_read_wave
},
1852 { MKTAG('e','s','d','s'), mov_read_esds
},
1853 { MKTAG('w','i','d','e'), mov_read_wide
}, /* place holder */
1854 { MKTAG('c','m','o','v'), mov_read_cmov
},
1858 static int mov_probe(AVProbeData
*p
)
1860 unsigned int offset
;
1864 /* check file header */
1867 /* ignore invalid offset */
1868 if ((offset
+ 8) > (unsigned int)p
->buf_size
)
1870 tag
= AV_RL32(p
->buf
+ offset
+ 4);
1872 /* check for obvious tags */
1873 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1874 case MKTAG('m','o','o','v'):
1875 case MKTAG('m','d','a','t'):
1876 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1877 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
1878 case MKTAG('f','t','y','p'):
1879 return AVPROBE_SCORE_MAX
;
1880 /* those are more common words, so rate then a bit less */
1881 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1882 case MKTAG('w','i','d','e'):
1883 case MKTAG('f','r','e','e'):
1884 case MKTAG('j','u','n','k'):
1885 case MKTAG('p','i','c','t'):
1886 return AVPROBE_SCORE_MAX
- 5;
1887 case MKTAG(0x82,0x82,0x7f,0x7d):
1888 case MKTAG('s','k','i','p'):
1889 case MKTAG('u','u','i','d'):
1890 case MKTAG('p','r','f','l'):
1891 offset
= AV_RB32(p
->buf
+offset
) + offset
;
1892 /* if we only find those cause probedata is too small at least rate them */
1893 score
= AVPROBE_SCORE_MAX
- 50;
1896 /* unrecognized tag */
1903 static int mov_read_header(AVFormatContext
*s
, AVFormatParameters
*ap
)
1905 MOVContext
*mov
= s
->priv_data
;
1906 ByteIOContext
*pb
= s
->pb
;
1908 MOVAtom atom
= { 0, 0, 0 };
1911 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1912 if(!url_is_streamed(pb
))
1913 atom
.size
= url_fsize(pb
);
1915 atom
.size
= INT64_MAX
;
1917 /* check MOV header */
1918 if ((err
= mov_read_default(mov
, pb
, atom
)) < 0) {
1919 av_log(s
, AV_LOG_ERROR
, "error reading header: %d\n", err
);
1922 if (!mov
->found_moov
) {
1923 av_log(s
, AV_LOG_ERROR
, "moov atom not found\n");
1926 dprintf(mov
->fc
, "on_parse_exit_offset=%lld\n", url_ftell(pb
));
1931 static int mov_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
1933 MOVContext
*mov
= s
->priv_data
;
1934 MOVStreamContext
*sc
= 0;
1935 AVIndexEntry
*sample
= 0;
1936 int64_t best_dts
= INT64_MAX
;
1939 for (i
= 0; i
< s
->nb_streams
; i
++) {
1940 AVStream
*st
= s
->streams
[i
];
1941 MOVStreamContext
*msc
= st
->priv_data
;
1942 if (st
->discard
!= AVDISCARD_ALL
&& msc
->pb
&& msc
->current_sample
< st
->nb_index_entries
) {
1943 AVIndexEntry
*current_sample
= &st
->index_entries
[msc
->current_sample
];
1944 int64_t dts
= av_rescale(current_sample
->timestamp
* (int64_t)msc
->time_rate
,
1945 AV_TIME_BASE
, msc
->time_scale
);
1946 dprintf(s
, "stream %d, sample %d, dts %"PRId64
"\n", i
, msc
->current_sample
, dts
);
1947 if (!sample
|| (url_is_streamed(s
->pb
) && current_sample
->pos
< sample
->pos
) ||
1948 (!url_is_streamed(s
->pb
) &&
1949 ((msc
->pb
!= s
->pb
&& dts
< best_dts
) || (msc
->pb
== s
->pb
&&
1950 ((FFABS(best_dts
- dts
) <= AV_TIME_BASE
&& current_sample
->pos
< sample
->pos
) ||
1951 (FFABS(best_dts
- dts
) > AV_TIME_BASE
&& dts
< best_dts
)))))) {
1952 sample
= current_sample
;
1959 mov
->found_mdat
= 0;
1960 if (!url_is_streamed(s
->pb
) ||
1961 mov_read_default(mov
, s
->pb
, (MOVAtom
){ 0, 0, INT64_MAX
}) < 0 ||
1964 dprintf(s
, "read fragments, offset 0x%llx\n", url_ftell(s
->pb
));
1967 /* must be done just before reading, to avoid infinite loop on sample */
1968 sc
->current_sample
++;
1969 if (url_fseek(sc
->pb
, sample
->pos
, SEEK_SET
) != sample
->pos
) {
1970 av_log(mov
->fc
, AV_LOG_ERROR
, "stream %d, offset 0x%"PRIx64
": partial file\n",
1971 sc
->ffindex
, sample
->pos
);
1974 ret
= av_get_packet(sc
->pb
, pkt
, sample
->size
);
1977 #if CONFIG_DV_DEMUXER
1978 if (mov
->dv_demux
&& sc
->dv_audio_container
) {
1979 dv_produce_packet(mov
->dv_demux
, pkt
, pkt
->data
, pkt
->size
);
1982 if (dv_get_packet(mov
->dv_demux
, pkt
) < 0)
1986 pkt
->stream_index
= sc
->ffindex
;
1987 pkt
->dts
= sample
->timestamp
;
1988 if (sc
->ctts_data
) {
1989 assert(sc
->ctts_data
[sc
->ctts_index
].duration
% sc
->time_rate
== 0);
1990 pkt
->pts
= pkt
->dts
+ sc
->ctts_data
[sc
->ctts_index
].duration
/ sc
->time_rate
;
1991 /* update ctts context */
1993 if (sc
->ctts_index
< sc
->ctts_count
&&
1994 sc
->ctts_data
[sc
->ctts_index
].count
== sc
->ctts_sample
) {
1996 sc
->ctts_sample
= 0;
1999 pkt
->dts
= AV_NOPTS_VALUE
;
2001 AVStream
*st
= s
->streams
[sc
->ffindex
];
2002 int64_t next_dts
= (sc
->current_sample
< st
->nb_index_entries
) ?
2003 st
->index_entries
[sc
->current_sample
].timestamp
: st
->duration
;
2004 pkt
->duration
= next_dts
- pkt
->dts
;
2005 pkt
->pts
= pkt
->dts
;
2007 pkt
->flags
|= sample
->flags
& AVINDEX_KEYFRAME
? PKT_FLAG_KEY
: 0;
2008 pkt
->pos
= sample
->pos
;
2009 dprintf(s
, "stream %d, pts %"PRId64
", dts %"PRId64
", pos 0x%"PRIx64
", duration %d\n",
2010 pkt
->stream_index
, pkt
->pts
, pkt
->dts
, pkt
->pos
, pkt
->duration
);
2014 static int mov_seek_stream(AVStream
*st
, int64_t timestamp
, int flags
)
2016 MOVStreamContext
*sc
= st
->priv_data
;
2017 int sample
, time_sample
;
2020 sample
= av_index_search_timestamp(st
, timestamp
, flags
);
2021 dprintf(st
->codec
, "stream %d, timestamp %"PRId64
", sample %d\n", st
->index
, timestamp
, sample
);
2022 if (sample
< 0) /* not sure what to do */
2024 sc
->current_sample
= sample
;
2025 dprintf(st
->codec
, "stream %d, found sample %d\n", st
->index
, sc
->current_sample
);
2026 /* adjust ctts index */
2027 if (sc
->ctts_data
) {
2029 for (i
= 0; i
< sc
->ctts_count
; i
++) {
2030 int next
= time_sample
+ sc
->ctts_data
[i
].count
;
2031 if (next
> sc
->current_sample
) {
2033 sc
->ctts_sample
= sc
->current_sample
- time_sample
;
2042 static int mov_read_seek(AVFormatContext
*s
, int stream_index
, int64_t sample_time
, int flags
)
2045 int64_t seek_timestamp
, timestamp
;
2049 if (stream_index
>= s
->nb_streams
)
2051 if (sample_time
< 0)
2054 st
= s
->streams
[stream_index
];
2055 sample
= mov_seek_stream(st
, sample_time
, flags
);
2059 /* adjust seek timestamp to found sample timestamp */
2060 seek_timestamp
= st
->index_entries
[sample
].timestamp
;
2062 for (i
= 0; i
< s
->nb_streams
; i
++) {
2064 if (stream_index
== i
|| st
->discard
== AVDISCARD_ALL
)
2067 timestamp
= av_rescale_q(seek_timestamp
, s
->streams
[stream_index
]->time_base
, st
->time_base
);
2068 mov_seek_stream(st
, timestamp
, flags
);
2073 static int mov_read_close(AVFormatContext
*s
)
2075 MOVContext
*mov
= s
->priv_data
;
2078 for (i
= 0; i
< s
->nb_streams
; i
++) {
2079 AVStream
*st
= s
->streams
[i
];
2080 MOVStreamContext
*sc
= st
->priv_data
;
2082 av_freep(&sc
->ctts_data
);
2083 for (j
= 0; j
< sc
->drefs_count
; j
++)
2084 av_freep(&sc
->drefs
[j
].path
);
2085 av_freep(&sc
->drefs
);
2086 if (sc
->pb
&& sc
->pb
!= s
->pb
)
2089 av_freep(&st
->codec
->palctrl
);
2092 if (mov
->dv_demux
) {
2093 for(i
= 0; i
< mov
->dv_fctx
->nb_streams
; i
++) {
2094 av_freep(&mov
->dv_fctx
->streams
[i
]->codec
);
2095 av_freep(&mov
->dv_fctx
->streams
[i
]);
2097 av_freep(&mov
->dv_fctx
);
2098 av_freep(&mov
->dv_demux
);
2101 av_freep(&mov
->trex_data
);
2106 AVInputFormat mov_demuxer
= {
2107 "mov,mp4,m4a,3gp,3g2,mj2",
2108 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),