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_MP4ALS
, AOT_ALS
}, /* MPEG-4 ALS */
388 { CODEC_ID_NONE
, AOT_NULL
},
391 static int mov_read_esds(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
393 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
396 get_be32(pb
); /* version + flags */
397 len
= mp4_read_descr(c
, pb
, &tag
);
398 if (tag
== MP4ESDescrTag
) {
399 get_be16(pb
); /* ID */
400 get_byte(pb
); /* priority */
402 get_be16(pb
); /* ID */
404 len
= mp4_read_descr(c
, pb
, &tag
);
405 if (tag
== MP4DecConfigDescrTag
) {
406 int object_type_id
= get_byte(pb
);
407 get_byte(pb
); /* stream type */
408 get_be24(pb
); /* buffer size db */
409 get_be32(pb
); /* max bitrate */
410 get_be32(pb
); /* avg bitrate */
412 st
->codec
->codec_id
= codec_get_id(ff_mp4_obj_type
, object_type_id
);
413 dprintf(c
->fc
, "esds object type id %d\n", object_type_id
);
414 len
= mp4_read_descr(c
, pb
, &tag
);
415 if (tag
== MP4DecSpecificDescrTag
) {
416 dprintf(c
->fc
, "Specific MPEG4 header len=%d\n", len
);
417 if((uint64_t)len
> (1<<30))
419 st
->codec
->extradata
= av_mallocz(len
+ FF_INPUT_BUFFER_PADDING_SIZE
);
420 if (!st
->codec
->extradata
)
421 return AVERROR(ENOMEM
);
422 get_buffer(pb
, st
->codec
->extradata
, len
);
423 st
->codec
->extradata_size
= len
;
424 if (st
->codec
->codec_id
== CODEC_ID_AAC
) {
425 MPEG4AudioConfig cfg
;
426 ff_mpeg4audio_get_config(&cfg
, st
->codec
->extradata
,
427 st
->codec
->extradata_size
);
428 if (cfg
.chan_config
> 7)
430 st
->codec
->channels
= ff_mpeg4audio_channels
[cfg
.chan_config
];
431 if (cfg
.object_type
== 29 && cfg
.sampling_index
< 3) // old mp3on4
432 st
->codec
->sample_rate
= ff_mpa_freq_tab
[cfg
.sampling_index
];
434 st
->codec
->sample_rate
= cfg
.sample_rate
; // ext sample rate ?
435 dprintf(c
->fc
, "mp4a config channels %d obj %d ext obj %d "
436 "sample rate %d ext sample rate %d\n", st
->codec
->channels
,
437 cfg
.object_type
, cfg
.ext_object_type
,
438 cfg
.sample_rate
, cfg
.ext_sample_rate
);
439 if (!(st
->codec
->codec_id
= codec_get_id(mp4_audio_types
,
441 st
->codec
->codec_id
= CODEC_ID_AAC
;
448 static int mov_read_pasp(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
450 const int num
= get_be32(pb
);
451 const int den
= get_be32(pb
);
452 AVStream
* const st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
454 if ((st
->sample_aspect_ratio
.den
!= 1 || st
->sample_aspect_ratio
.num
) && // default
455 (den
!= st
->sample_aspect_ratio
.den
|| num
!= st
->sample_aspect_ratio
.num
))
456 av_log(c
->fc
, AV_LOG_WARNING
,
457 "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
458 st
->sample_aspect_ratio
.num
, st
->sample_aspect_ratio
.den
);
459 st
->sample_aspect_ratio
.num
= num
;
460 st
->sample_aspect_ratio
.den
= den
;
465 /* this atom contains actual media data */
466 static int mov_read_mdat(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
468 if(atom
.size
== 0) /* wrong one (MP4) */
471 return 0; /* now go for moov */
474 static int mov_read_ftyp(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
476 uint32_t type
= get_le32(pb
);
478 if (type
!= MKTAG('q','t',' ',' '))
480 av_log(c
->fc
, AV_LOG_DEBUG
, "ISO: File Type Major Brand: %.4s\n",(char *)&type
);
481 get_be32(pb
); /* minor version */
482 url_fskip(pb
, atom
.size
- 8);
486 /* this atom should contain all header atoms */
487 static int mov_read_moov(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
489 if (mov_read_default(c
, pb
, atom
) < 0)
491 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
492 /* so we don't parse the whole file if over a network */
494 return 0; /* now go for mdat */
497 static int mov_read_moof(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
499 c
->fragment
.moof_offset
= url_ftell(pb
) - 8;
500 dprintf(c
->fc
, "moof offset %llx\n", c
->fragment
.moof_offset
);
501 return mov_read_default(c
, pb
, atom
);
504 static int mov_read_mdhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
506 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
507 MOVStreamContext
*sc
= st
->priv_data
;
508 int version
= get_byte(pb
);
509 char language
[4] = {0};
513 return -1; /* unsupported */
515 get_be24(pb
); /* flags */
520 get_be32(pb
); /* creation time */
521 get_be32(pb
); /* modification time */
524 sc
->time_scale
= get_be32(pb
);
525 st
->duration
= (version
== 1) ? get_be64(pb
) : get_be32(pb
); /* duration */
527 lang
= get_be16(pb
); /* language */
528 if (ff_mov_lang_to_iso639(lang
, language
))
529 av_metadata_set(&st
->metadata
, "language", language
);
530 get_be16(pb
); /* quality */
535 static int mov_read_mvhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
537 int version
= get_byte(pb
); /* version */
538 get_be24(pb
); /* flags */
544 get_be32(pb
); /* creation time */
545 get_be32(pb
); /* modification time */
547 c
->time_scale
= get_be32(pb
); /* time scale */
549 dprintf(c
->fc
, "time scale = %i\n", c
->time_scale
);
551 c
->duration
= (version
== 1) ? get_be64(pb
) : get_be32(pb
); /* duration */
552 get_be32(pb
); /* preferred scale */
554 get_be16(pb
); /* preferred volume */
556 url_fskip(pb
, 10); /* reserved */
558 url_fskip(pb
, 36); /* display matrix */
560 get_be32(pb
); /* preview time */
561 get_be32(pb
); /* preview duration */
562 get_be32(pb
); /* poster time */
563 get_be32(pb
); /* selection time */
564 get_be32(pb
); /* selection duration */
565 get_be32(pb
); /* current time */
566 get_be32(pb
); /* next track ID */
571 static int mov_read_smi(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
573 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
575 if((uint64_t)atom
.size
> (1<<30))
578 // currently SVQ3 decoder expect full STSD header - so let's fake it
579 // this should be fixed and just SMI header should be passed
580 av_free(st
->codec
->extradata
);
581 st
->codec
->extradata
= av_mallocz(atom
.size
+ 0x5a + FF_INPUT_BUFFER_PADDING_SIZE
);
582 if (!st
->codec
->extradata
)
583 return AVERROR(ENOMEM
);
584 st
->codec
->extradata_size
= 0x5a + atom
.size
;
585 memcpy(st
->codec
->extradata
, "SVQ3", 4); // fake
586 get_buffer(pb
, st
->codec
->extradata
+ 0x5a, atom
.size
);
587 dprintf(c
->fc
, "Reading SMI %"PRId64
" %s\n", atom
.size
, st
->codec
->extradata
+ 0x5a);
591 static int mov_read_enda(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
593 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
594 int little_endian
= get_be16(pb
);
596 dprintf(c
->fc
, "enda %d\n", little_endian
);
597 if (little_endian
== 1) {
598 switch (st
->codec
->codec_id
) {
599 case CODEC_ID_PCM_S24BE
:
600 st
->codec
->codec_id
= CODEC_ID_PCM_S24LE
;
602 case CODEC_ID_PCM_S32BE
:
603 st
->codec
->codec_id
= CODEC_ID_PCM_S32LE
;
605 case CODEC_ID_PCM_F32BE
:
606 st
->codec
->codec_id
= CODEC_ID_PCM_F32LE
;
608 case CODEC_ID_PCM_F64BE
:
609 st
->codec
->codec_id
= CODEC_ID_PCM_F64LE
;
618 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
619 static int mov_read_extradata(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
625 if (c
->fc
->nb_streams
< 1) // will happen with jp2 files
627 st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
628 size
= (uint64_t)st
->codec
->extradata_size
+ atom
.size
+ 8 + FF_INPUT_BUFFER_PADDING_SIZE
;
629 if(size
> INT_MAX
|| (uint64_t)atom
.size
> INT_MAX
)
631 buf
= av_realloc(st
->codec
->extradata
, size
);
634 st
->codec
->extradata
= buf
;
635 buf
+= st
->codec
->extradata_size
;
636 st
->codec
->extradata_size
= size
- FF_INPUT_BUFFER_PADDING_SIZE
;
637 AV_WB32( buf
, atom
.size
+ 8);
638 AV_WL32( buf
+ 4, atom
.type
);
639 get_buffer(pb
, buf
+ 8, atom
.size
);
643 static int mov_read_wave(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
645 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
647 if((uint64_t)atom
.size
> (1<<30))
650 if (st
->codec
->codec_id
== CODEC_ID_QDM2
) {
651 // pass all frma atom to codec, needed at least for QDM2
652 av_free(st
->codec
->extradata
);
653 st
->codec
->extradata
= av_mallocz(atom
.size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
654 if (!st
->codec
->extradata
)
655 return AVERROR(ENOMEM
);
656 st
->codec
->extradata_size
= atom
.size
;
657 get_buffer(pb
, st
->codec
->extradata
, atom
.size
);
658 } else if (atom
.size
> 8) { /* to read frma, esds atoms */
659 if (mov_read_default(c
, pb
, atom
) < 0)
662 url_fskip(pb
, atom
.size
);
667 * This function reads atom content and puts data in extradata without tag
668 * nor size unlike mov_read_extradata.
670 static int mov_read_glbl(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
672 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
674 if((uint64_t)atom
.size
> (1<<30))
677 av_free(st
->codec
->extradata
);
678 st
->codec
->extradata
= av_mallocz(atom
.size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
679 if (!st
->codec
->extradata
)
680 return AVERROR(ENOMEM
);
681 st
->codec
->extradata_size
= atom
.size
;
682 get_buffer(pb
, st
->codec
->extradata
, atom
.size
);
686 static int mov_read_stco(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
688 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
689 MOVStreamContext
*sc
= st
->priv_data
;
690 unsigned int i
, entries
;
692 get_byte(pb
); /* version */
693 get_be24(pb
); /* flags */
695 entries
= get_be32(pb
);
697 if(entries
>= UINT_MAX
/sizeof(int64_t))
700 sc
->chunk_offsets
= av_malloc(entries
* sizeof(int64_t));
701 if (!sc
->chunk_offsets
)
702 return AVERROR(ENOMEM
);
703 sc
->chunk_count
= entries
;
705 if (atom
.type
== MKTAG('s','t','c','o'))
706 for(i
=0; i
<entries
; i
++)
707 sc
->chunk_offsets
[i
] = get_be32(pb
);
708 else if (atom
.type
== MKTAG('c','o','6','4'))
709 for(i
=0; i
<entries
; i
++)
710 sc
->chunk_offsets
[i
] = get_be64(pb
);
718 * Compute codec id for 'lpcm' tag.
719 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
721 static enum CodecID
mov_get_lpcm_codec_id(int bps
, int flags
)
723 if (flags
& 1) { // floating point
724 if (flags
& 2) { // big endian
725 if (bps
== 32) return CODEC_ID_PCM_F32BE
;
726 else if (bps
== 64) return CODEC_ID_PCM_F64BE
;
728 if (bps
== 32) return CODEC_ID_PCM_F32LE
;
729 else if (bps
== 64) return CODEC_ID_PCM_F64LE
;
735 if (flags
& 4) return CODEC_ID_PCM_S8
;
736 else return CODEC_ID_PCM_U8
;
737 else if (bps
== 16) return CODEC_ID_PCM_S16BE
;
738 else if (bps
== 24) return CODEC_ID_PCM_S24BE
;
739 else if (bps
== 32) return CODEC_ID_PCM_S32BE
;
742 if (flags
& 4) return CODEC_ID_PCM_S8
;
743 else return CODEC_ID_PCM_U8
;
744 else if (bps
== 16) return CODEC_ID_PCM_S16LE
;
745 else if (bps
== 24) return CODEC_ID_PCM_S24LE
;
746 else if (bps
== 32) return CODEC_ID_PCM_S32LE
;
749 return CODEC_ID_NONE
;
752 static int mov_read_stsd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
754 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
755 MOVStreamContext
*sc
= st
->priv_data
;
756 int j
, entries
, pseudo_stream_id
;
758 get_byte(pb
); /* version */
759 get_be24(pb
); /* flags */
761 entries
= get_be32(pb
);
763 for(pseudo_stream_id
=0; pseudo_stream_id
<entries
; pseudo_stream_id
++) {
764 //Parsing Sample description table
767 MOVAtom a
= { 0, 0, 0 };
768 int64_t start_pos
= url_ftell(pb
);
769 int size
= get_be32(pb
); /* size */
770 uint32_t format
= get_le32(pb
); /* data format */
772 get_be32(pb
); /* reserved */
773 get_be16(pb
); /* reserved */
774 dref_id
= get_be16(pb
);
776 if (st
->codec
->codec_tag
&&
777 st
->codec
->codec_tag
!= format
&&
778 (c
->fc
->video_codec_id
? codec_get_id(codec_movvideo_tags
, format
) != c
->fc
->video_codec_id
779 : st
->codec
->codec_tag
!= MKTAG('j','p','e','g'))
781 /* Multiple fourcc, we skip JPEG. This is not correct, we should
782 * export it as a separate AVStream but this needs a few changes
783 * in the MOV demuxer, patch welcome. */
784 av_log(c
->fc
, AV_LOG_WARNING
, "multiple fourcc not supported\n");
785 url_fskip(pb
, size
- (url_ftell(pb
) - start_pos
));
788 sc
->pseudo_stream_id
= st
->codec
->codec_tag
? -1 : pseudo_stream_id
;
789 sc
->dref_id
= dref_id
;
791 st
->codec
->codec_tag
= format
;
792 id
= codec_get_id(codec_movaudio_tags
, format
);
793 if (id
<=0 && (format
&0xFFFF) == 'm'+('s'<<8))
794 id
= codec_get_id(codec_wav_tags
, bswap_32(format
)&0xFFFF);
796 if (st
->codec
->codec_type
!= CODEC_TYPE_VIDEO
&& id
> 0) {
797 st
->codec
->codec_type
= CODEC_TYPE_AUDIO
;
798 } else if (st
->codec
->codec_type
!= CODEC_TYPE_AUDIO
&& /* do not overwrite codec type */
799 format
&& format
!= MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
800 id
= codec_get_id(codec_movvideo_tags
, format
);
802 id
= codec_get_id(codec_bmp_tags
, format
);
804 st
->codec
->codec_type
= CODEC_TYPE_VIDEO
;
805 else if(st
->codec
->codec_type
== CODEC_TYPE_DATA
){
806 id
= codec_get_id(ff_codec_movsubtitle_tags
, format
);
808 st
->codec
->codec_type
= CODEC_TYPE_SUBTITLE
;
812 dprintf(c
->fc
, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size
,
813 (format
>> 0) & 0xff, (format
>> 8) & 0xff, (format
>> 16) & 0xff,
814 (format
>> 24) & 0xff, st
->codec
->codec_type
);
816 if(st
->codec
->codec_type
==CODEC_TYPE_VIDEO
) {
817 uint8_t codec_name
[32];
818 unsigned int color_depth
;
821 st
->codec
->codec_id
= id
;
822 get_be16(pb
); /* version */
823 get_be16(pb
); /* revision level */
824 get_be32(pb
); /* vendor */
825 get_be32(pb
); /* temporal quality */
826 get_be32(pb
); /* spatial quality */
828 st
->codec
->width
= get_be16(pb
); /* width */
829 st
->codec
->height
= get_be16(pb
); /* height */
831 get_be32(pb
); /* horiz resolution */
832 get_be32(pb
); /* vert resolution */
833 get_be32(pb
); /* data size, always 0 */
834 get_be16(pb
); /* frames per samples */
836 get_buffer(pb
, codec_name
, 32); /* codec name, pascal string */
837 if (codec_name
[0] <= 31) {
838 memcpy(st
->codec
->codec_name
, &codec_name
[1],codec_name
[0]);
839 st
->codec
->codec_name
[codec_name
[0]] = 0;
842 st
->codec
->bits_per_coded_sample
= get_be16(pb
); /* depth */
843 st
->codec
->color_table_id
= get_be16(pb
); /* colortable id */
844 dprintf(c
->fc
, "depth %d, ctab id %d\n",
845 st
->codec
->bits_per_coded_sample
, st
->codec
->color_table_id
);
846 /* figure out the palette situation */
847 color_depth
= st
->codec
->bits_per_coded_sample
& 0x1F;
848 color_greyscale
= st
->codec
->bits_per_coded_sample
& 0x20;
850 /* if the depth is 2, 4, or 8 bpp, file is palettized */
851 if ((color_depth
== 2) || (color_depth
== 4) ||
852 (color_depth
== 8)) {
853 /* for palette traversal */
854 unsigned int color_start
, color_count
, color_end
;
855 unsigned char r
, g
, b
;
857 st
->codec
->palctrl
= av_malloc(sizeof(*st
->codec
->palctrl
));
858 if (color_greyscale
) {
859 int color_index
, color_dec
;
860 /* compute the greyscale palette */
861 st
->codec
->bits_per_coded_sample
= color_depth
;
862 color_count
= 1 << color_depth
;
864 color_dec
= 256 / (color_count
- 1);
865 for (j
= 0; j
< color_count
; j
++) {
866 r
= g
= b
= color_index
;
867 st
->codec
->palctrl
->palette
[j
] =
868 (r
<< 16) | (g
<< 8) | (b
);
869 color_index
-= color_dec
;
873 } else if (st
->codec
->color_table_id
) {
874 const uint8_t *color_table
;
875 /* if flag bit 3 is set, use the default palette */
876 color_count
= 1 << color_depth
;
877 if (color_depth
== 2)
878 color_table
= ff_qt_default_palette_4
;
879 else if (color_depth
== 4)
880 color_table
= ff_qt_default_palette_16
;
882 color_table
= ff_qt_default_palette_256
;
884 for (j
= 0; j
< color_count
; j
++) {
885 r
= color_table
[j
* 3 + 0];
886 g
= color_table
[j
* 3 + 1];
887 b
= color_table
[j
* 3 + 2];
888 st
->codec
->palctrl
->palette
[j
] =
889 (r
<< 16) | (g
<< 8) | (b
);
892 /* load the palette from the file */
893 color_start
= get_be32(pb
);
894 color_count
= get_be16(pb
);
895 color_end
= get_be16(pb
);
896 if ((color_start
<= 255) &&
897 (color_end
<= 255)) {
898 for (j
= color_start
; j
<= color_end
; j
++) {
899 /* each R, G, or B component is 16 bits;
900 * only use the top 8 bits; skip alpha bytes
910 st
->codec
->palctrl
->palette
[j
] =
911 (r
<< 16) | (g
<< 8) | (b
);
915 st
->codec
->palctrl
->palette_changed
= 1;
917 } else if(st
->codec
->codec_type
==CODEC_TYPE_AUDIO
) {
918 int bits_per_sample
, flags
;
919 uint16_t version
= get_be16(pb
);
921 st
->codec
->codec_id
= id
;
922 get_be16(pb
); /* revision level */
923 get_be32(pb
); /* vendor */
925 st
->codec
->channels
= get_be16(pb
); /* channel count */
926 dprintf(c
->fc
, "audio channels %d\n", st
->codec
->channels
);
927 st
->codec
->bits_per_coded_sample
= get_be16(pb
); /* sample size */
929 sc
->audio_cid
= get_be16(pb
);
930 get_be16(pb
); /* packet size = 0 */
932 st
->codec
->sample_rate
= ((get_be32(pb
) >> 16));
934 //Read QT version 1 fields. In version 0 these do not exist.
935 dprintf(c
->fc
, "version =%d, isom =%d\n",version
,c
->isom
);
938 sc
->samples_per_frame
= get_be32(pb
);
939 get_be32(pb
); /* bytes per packet */
940 sc
->bytes_per_frame
= get_be32(pb
);
941 get_be32(pb
); /* bytes per sample */
942 } else if(version
==2) {
943 get_be32(pb
); /* sizeof struct only */
944 st
->codec
->sample_rate
= av_int2dbl(get_be64(pb
)); /* float 64 */
945 st
->codec
->channels
= get_be32(pb
);
946 get_be32(pb
); /* always 0x7F000000 */
947 st
->codec
->bits_per_coded_sample
= get_be32(pb
); /* bits per channel if sound is uncompressed */
948 flags
= get_be32(pb
); /* lcpm format specific flag */
949 sc
->bytes_per_frame
= get_be32(pb
); /* bytes per audio packet if constant */
950 sc
->samples_per_frame
= get_be32(pb
); /* lpcm frames per audio packet if constant */
951 if (format
== MKTAG('l','p','c','m'))
952 st
->codec
->codec_id
= mov_get_lpcm_codec_id(st
->codec
->bits_per_coded_sample
, flags
);
956 switch (st
->codec
->codec_id
) {
957 case CODEC_ID_PCM_S8
:
958 case CODEC_ID_PCM_U8
:
959 if (st
->codec
->bits_per_coded_sample
== 16)
960 st
->codec
->codec_id
= CODEC_ID_PCM_S16BE
;
962 case CODEC_ID_PCM_S16LE
:
963 case CODEC_ID_PCM_S16BE
:
964 if (st
->codec
->bits_per_coded_sample
== 8)
965 st
->codec
->codec_id
= CODEC_ID_PCM_S8
;
966 else if (st
->codec
->bits_per_coded_sample
== 24)
967 st
->codec
->codec_id
=
968 st
->codec
->codec_id
== CODEC_ID_PCM_S16BE
?
969 CODEC_ID_PCM_S24BE
: CODEC_ID_PCM_S24LE
;
971 /* set values for old format before stsd version 1 appeared */
973 sc
->samples_per_frame
= 6;
974 sc
->bytes_per_frame
= 2*st
->codec
->channels
;
977 sc
->samples_per_frame
= 6;
978 sc
->bytes_per_frame
= 1*st
->codec
->channels
;
980 case CODEC_ID_ADPCM_IMA_QT
:
981 sc
->samples_per_frame
= 64;
982 sc
->bytes_per_frame
= 34*st
->codec
->channels
;
985 sc
->samples_per_frame
= 160;
986 sc
->bytes_per_frame
= 33;
992 bits_per_sample
= av_get_bits_per_sample(st
->codec
->codec_id
);
993 if (bits_per_sample
) {
994 st
->codec
->bits_per_coded_sample
= bits_per_sample
;
995 sc
->sample_size
= (bits_per_sample
>> 3) * st
->codec
->channels
;
997 } else if(st
->codec
->codec_type
==CODEC_TYPE_SUBTITLE
){
998 // ttxt stsd contains display flags, justification, background
999 // color, fonts, and default styles, so fake an atom to read it
1000 MOVAtom fake_atom
= { .size
= size
- (url_ftell(pb
) - start_pos
) };
1001 if (format
!= AV_RL32("mp4s")) // mp4s contains a regular esds atom
1002 mov_read_glbl(c
, pb
, fake_atom
);
1003 st
->codec
->codec_id
= id
;
1004 st
->codec
->width
= sc
->width
;
1005 st
->codec
->height
= sc
->height
;
1007 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1008 url_fskip(pb
, size
- (url_ftell(pb
) - start_pos
));
1010 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1011 a
.size
= size
- (url_ftell(pb
) - start_pos
);
1013 if (mov_read_default(c
, pb
, a
) < 0)
1015 } else if (a
.size
> 0)
1016 url_fskip(pb
, a
.size
);
1019 if(st
->codec
->codec_type
==CODEC_TYPE_AUDIO
&& st
->codec
->sample_rate
==0 && sc
->time_scale
>1)
1020 st
->codec
->sample_rate
= sc
->time_scale
;
1022 /* special codec parameters handling */
1023 switch (st
->codec
->codec_id
) {
1024 #if CONFIG_DV_DEMUXER
1025 case CODEC_ID_DVAUDIO
:
1026 c
->dv_fctx
= avformat_alloc_context();
1027 c
->dv_demux
= dv_init_demux(c
->dv_fctx
);
1029 av_log(c
->fc
, AV_LOG_ERROR
, "dv demux context init error\n");
1032 sc
->dv_audio_container
= 1;
1033 st
->codec
->codec_id
= CODEC_ID_PCM_S16LE
;
1036 /* no ifdef since parameters are always those */
1037 case CODEC_ID_QCELP
:
1038 // force sample rate for qcelp when not stored in mov
1039 if (st
->codec
->codec_tag
!= MKTAG('Q','c','l','p'))
1040 st
->codec
->sample_rate
= 8000;
1041 st
->codec
->frame_size
= 160;
1042 st
->codec
->channels
= 1; /* really needed */
1044 case CODEC_ID_AMR_NB
:
1045 case CODEC_ID_AMR_WB
:
1046 st
->codec
->frame_size
= sc
->samples_per_frame
;
1047 st
->codec
->channels
= 1; /* really needed */
1048 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1049 if (st
->codec
->codec_id
== CODEC_ID_AMR_NB
)
1050 st
->codec
->sample_rate
= 8000;
1051 else if (st
->codec
->codec_id
== CODEC_ID_AMR_WB
)
1052 st
->codec
->sample_rate
= 16000;
1056 st
->codec
->codec_type
= CODEC_TYPE_AUDIO
; /* force type after stsd for m1a hdlr */
1057 st
->need_parsing
= AVSTREAM_PARSE_FULL
;
1060 case CODEC_ID_ADPCM_MS
:
1061 case CODEC_ID_ADPCM_IMA_WAV
:
1062 st
->codec
->block_align
= sc
->bytes_per_frame
;
1065 if (st
->codec
->extradata_size
== 36) {
1066 st
->codec
->frame_size
= AV_RB32(st
->codec
->extradata
+12);
1067 st
->codec
->channels
= AV_RB8 (st
->codec
->extradata
+21);
1077 static int mov_read_stsc(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1079 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1080 MOVStreamContext
*sc
= st
->priv_data
;
1081 unsigned int i
, entries
;
1083 get_byte(pb
); /* version */
1084 get_be24(pb
); /* flags */
1086 entries
= get_be32(pb
);
1088 dprintf(c
->fc
, "track[%i].stsc.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1090 if(entries
>= UINT_MAX
/ sizeof(*sc
->stsc_data
))
1092 sc
->stsc_data
= av_malloc(entries
* sizeof(*sc
->stsc_data
));
1094 return AVERROR(ENOMEM
);
1095 sc
->stsc_count
= entries
;
1097 for(i
=0; i
<entries
; i
++) {
1098 sc
->stsc_data
[i
].first
= get_be32(pb
);
1099 sc
->stsc_data
[i
].count
= get_be32(pb
);
1100 sc
->stsc_data
[i
].id
= get_be32(pb
);
1105 static int mov_read_stss(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1107 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1108 MOVStreamContext
*sc
= st
->priv_data
;
1109 unsigned int i
, entries
;
1111 get_byte(pb
); /* version */
1112 get_be24(pb
); /* flags */
1114 entries
= get_be32(pb
);
1116 dprintf(c
->fc
, "keyframe_count = %d\n", entries
);
1118 if(entries
>= UINT_MAX
/ sizeof(int))
1120 sc
->keyframes
= av_malloc(entries
* sizeof(int));
1122 return AVERROR(ENOMEM
);
1123 sc
->keyframe_count
= entries
;
1125 for(i
=0; i
<entries
; i
++) {
1126 sc
->keyframes
[i
] = get_be32(pb
);
1127 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1132 static int mov_read_stsz(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1134 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1135 MOVStreamContext
*sc
= st
->priv_data
;
1136 unsigned int i
, entries
, sample_size
, field_size
, num_bytes
;
1140 get_byte(pb
); /* version */
1141 get_be24(pb
); /* flags */
1143 if (atom
.type
== MKTAG('s','t','s','z')) {
1144 sample_size
= get_be32(pb
);
1145 if (!sc
->sample_size
) /* do not overwrite value computed in stsd */
1146 sc
->sample_size
= sample_size
;
1150 get_be24(pb
); /* reserved */
1151 field_size
= get_byte(pb
);
1153 entries
= get_be32(pb
);
1155 dprintf(c
->fc
, "sample_size = %d sample_count = %d\n", sc
->sample_size
, entries
);
1157 sc
->sample_count
= entries
;
1161 if (field_size
!= 4 && field_size
!= 8 && field_size
!= 16 && field_size
!= 32) {
1162 av_log(c
->fc
, AV_LOG_ERROR
, "Invalid sample field size %d\n", field_size
);
1166 if(entries
>= UINT_MAX
/ sizeof(int))
1168 sc
->sample_sizes
= av_malloc(entries
* sizeof(int));
1169 if (!sc
->sample_sizes
)
1170 return AVERROR(ENOMEM
);
1172 num_bytes
= (entries
*field_size
+4)>>3;
1174 buf
= av_malloc(num_bytes
+FF_INPUT_BUFFER_PADDING_SIZE
);
1176 av_freep(&sc
->sample_sizes
);
1177 return AVERROR(ENOMEM
);
1180 if (get_buffer(pb
, buf
, num_bytes
) < num_bytes
) {
1181 av_freep(&sc
->sample_sizes
);
1186 init_get_bits(&gb
, buf
, 8*num_bytes
);
1188 for(i
=0; i
<entries
; i
++)
1189 sc
->sample_sizes
[i
] = get_bits_long(&gb
, field_size
);
1195 static int mov_read_stts(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1197 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1198 MOVStreamContext
*sc
= st
->priv_data
;
1199 unsigned int i
, entries
;
1201 int64_t total_sample_count
=0;
1203 get_byte(pb
); /* version */
1204 get_be24(pb
); /* flags */
1205 entries
= get_be32(pb
);
1207 dprintf(c
->fc
, "track[%i].stts.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1209 if(entries
>= UINT_MAX
/ sizeof(*sc
->stts_data
))
1211 sc
->stts_data
= av_malloc(entries
* sizeof(*sc
->stts_data
));
1213 return AVERROR(ENOMEM
);
1214 sc
->stts_count
= entries
;
1216 for(i
=0; i
<entries
; i
++) {
1217 int sample_duration
;
1220 sample_count
=get_be32(pb
);
1221 sample_duration
= get_be32(pb
);
1222 sc
->stts_data
[i
].count
= sample_count
;
1223 sc
->stts_data
[i
].duration
= sample_duration
;
1225 sc
->time_rate
= av_gcd(sc
->time_rate
, sample_duration
);
1227 dprintf(c
->fc
, "sample_count=%d, sample_duration=%d\n",sample_count
,sample_duration
);
1229 duration
+=(int64_t)sample_duration
*sample_count
;
1230 total_sample_count
+=sample_count
;
1233 st
->nb_frames
= total_sample_count
;
1235 st
->duration
= duration
;
1239 static int mov_read_ctts(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1241 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1242 MOVStreamContext
*sc
= st
->priv_data
;
1243 unsigned int i
, entries
;
1245 get_byte(pb
); /* version */
1246 get_be24(pb
); /* flags */
1247 entries
= get_be32(pb
);
1249 dprintf(c
->fc
, "track[%i].ctts.entries = %i\n", c
->fc
->nb_streams
-1, entries
);
1251 if(entries
>= UINT_MAX
/ sizeof(*sc
->ctts_data
))
1253 sc
->ctts_data
= av_malloc(entries
* sizeof(*sc
->ctts_data
));
1255 return AVERROR(ENOMEM
);
1256 sc
->ctts_count
= entries
;
1258 for(i
=0; i
<entries
; i
++) {
1259 int count
=get_be32(pb
);
1260 int duration
=get_be32(pb
);
1264 st
->codec
->has_b_frames
= 1;
1266 sc
->ctts_data
[i
].count
= count
;
1267 sc
->ctts_data
[i
].duration
= duration
;
1269 sc
->time_rate
= av_gcd(sc
->time_rate
, FFABS(duration
));
1274 static void mov_build_index(MOVContext
*mov
, AVStream
*st
)
1276 MOVStreamContext
*sc
= st
->priv_data
;
1277 int64_t current_offset
;
1278 int64_t current_dts
= 0;
1279 unsigned int stts_index
= 0;
1280 unsigned int stsc_index
= 0;
1281 unsigned int stss_index
= 0;
1284 /* adjust first dts according to edit list */
1285 if (sc
->time_offset
) {
1286 int rescaled
= sc
->time_offset
< 0 ? av_rescale(sc
->time_offset
, sc
->time_scale
, mov
->time_scale
) : sc
->time_offset
;
1287 assert(sc
->time_offset
% sc
->time_rate
== 0);
1288 current_dts
= - (rescaled
/ sc
->time_rate
);
1289 if (sc
->ctts_data
&& sc
->ctts_data
[0].duration
/ sc
->stts_data
[0].duration
> 16) {
1290 /* more than 16 frames delay, dts are likely wrong
1291 this happens with files created by iMovie */
1293 st
->codec
->has_b_frames
= 1;
1297 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1298 if (!(st
->codec
->codec_type
== CODEC_TYPE_AUDIO
&&
1299 sc
->stts_count
== 1 && sc
->stts_data
[0].duration
== 1)) {
1300 unsigned int current_sample
= 0;
1301 unsigned int stts_sample
= 0;
1302 unsigned int keyframe
, sample_size
;
1303 unsigned int distance
= 0;
1304 int key_off
= sc
->keyframes
&& sc
->keyframes
[0] == 1;
1306 st
->nb_frames
= sc
->sample_count
;
1307 for (i
= 0; i
< sc
->chunk_count
; i
++) {
1308 current_offset
= sc
->chunk_offsets
[i
];
1309 if (stsc_index
+ 1 < sc
->stsc_count
&&
1310 i
+ 1 == sc
->stsc_data
[stsc_index
+ 1].first
)
1312 for (j
= 0; j
< sc
->stsc_data
[stsc_index
].count
; j
++) {
1313 if (current_sample
>= sc
->sample_count
) {
1314 av_log(mov
->fc
, AV_LOG_ERROR
, "wrong sample count\n");
1317 keyframe
= !sc
->keyframe_count
|| current_sample
+key_off
== sc
->keyframes
[stss_index
];
1320 if (stss_index
+ 1 < sc
->keyframe_count
)
1323 sample_size
= sc
->sample_size
> 0 ? sc
->sample_size
: sc
->sample_sizes
[current_sample
];
1324 if(sc
->pseudo_stream_id
== -1 ||
1325 sc
->stsc_data
[stsc_index
].id
- 1 == sc
->pseudo_stream_id
) {
1326 av_add_index_entry(st
, current_offset
, current_dts
, sample_size
, distance
,
1327 keyframe
? AVINDEX_KEYFRAME
: 0);
1328 dprintf(mov
->fc
, "AVIndex stream %d, sample %d, offset %"PRIx64
", dts %"PRId64
", "
1329 "size %d, distance %d, keyframe %d\n", st
->index
, current_sample
,
1330 current_offset
, current_dts
, sample_size
, distance
, keyframe
);
1333 current_offset
+= sample_size
;
1334 assert(sc
->stts_data
[stts_index
].duration
% sc
->time_rate
== 0);
1335 current_dts
+= sc
->stts_data
[stts_index
].duration
/ sc
->time_rate
;
1339 if (stts_index
+ 1 < sc
->stts_count
&& stts_sample
== sc
->stts_data
[stts_index
].count
) {
1345 } else { /* read whole chunk */
1346 unsigned int chunk_samples
, chunk_size
, chunk_duration
;
1347 unsigned int frames
= 1;
1348 for (i
= 0; i
< sc
->chunk_count
; i
++) {
1349 current_offset
= sc
->chunk_offsets
[i
];
1350 if (stsc_index
+ 1 < sc
->stsc_count
&&
1351 i
+ 1 == sc
->stsc_data
[stsc_index
+ 1].first
)
1353 chunk_samples
= sc
->stsc_data
[stsc_index
].count
;
1354 /* get chunk size, beware of alaw/ulaw/mace */
1355 if (sc
->samples_per_frame
> 0 &&
1356 (chunk_samples
* sc
->bytes_per_frame
% sc
->samples_per_frame
== 0)) {
1357 if (sc
->samples_per_frame
< 160)
1358 chunk_size
= chunk_samples
* sc
->bytes_per_frame
/ sc
->samples_per_frame
;
1360 chunk_size
= sc
->bytes_per_frame
;
1361 frames
= chunk_samples
/ sc
->samples_per_frame
;
1362 chunk_samples
= sc
->samples_per_frame
;
1365 chunk_size
= chunk_samples
* sc
->sample_size
;
1366 for (j
= 0; j
< frames
; j
++) {
1367 av_add_index_entry(st
, current_offset
, current_dts
, chunk_size
, 0, AVINDEX_KEYFRAME
);
1368 /* get chunk duration */
1370 while (chunk_samples
> 0) {
1371 if (chunk_samples
< sc
->stts_data
[stts_index
].count
) {
1372 chunk_duration
+= sc
->stts_data
[stts_index
].duration
* chunk_samples
;
1373 sc
->stts_data
[stts_index
].count
-= chunk_samples
;
1376 chunk_duration
+= sc
->stts_data
[stts_index
].duration
* chunk_samples
;
1377 chunk_samples
-= sc
->stts_data
[stts_index
].count
;
1378 if (stts_index
+ 1 < sc
->stts_count
)
1382 current_offset
+= sc
->bytes_per_frame
;
1383 dprintf(mov
->fc
, "AVIndex stream %d, chunk %d, offset %"PRIx64
", dts %"PRId64
", "
1384 "size %d, duration %d\n", st
->index
, i
, current_offset
, current_dts
,
1385 chunk_size
, chunk_duration
);
1386 assert(chunk_duration
% sc
->time_rate
== 0);
1387 current_dts
+= chunk_duration
/ sc
->time_rate
;
1393 static int mov_read_trak(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1396 MOVStreamContext
*sc
;
1399 st
= av_new_stream(c
->fc
, c
->fc
->nb_streams
);
1400 if (!st
) return AVERROR(ENOMEM
);
1401 sc
= av_mallocz(sizeof(MOVStreamContext
));
1402 if (!sc
) return AVERROR(ENOMEM
);
1405 st
->codec
->codec_type
= CODEC_TYPE_DATA
;
1406 sc
->ffindex
= st
->index
;
1408 if ((ret
= mov_read_default(c
, pb
, atom
)) < 0)
1412 if (sc
->chunk_count
&& (!sc
->stts_count
|| !sc
->stsc_count
||
1413 (!sc
->sample_size
&& !sc
->sample_count
))) {
1414 av_log(c
->fc
, AV_LOG_ERROR
, "stream %d, missing mandatory atoms, broken header\n",
1421 if (!sc
->time_scale
)
1422 sc
->time_scale
= c
->time_scale
;
1424 av_set_pts_info(st
, 64, sc
->time_rate
, sc
->time_scale
);
1426 if (st
->codec
->codec_type
== CODEC_TYPE_AUDIO
&&
1427 !st
->codec
->frame_size
&& sc
->stts_count
== 1) {
1428 st
->codec
->frame_size
= av_rescale(sc
->stts_data
[0].duration
,
1429 st
->codec
->sample_rate
, sc
->time_scale
);
1430 dprintf(c
->fc
, "frame size %d\n", st
->codec
->frame_size
);
1433 if (st
->duration
!= AV_NOPTS_VALUE
) {
1434 assert(st
->duration
% sc
->time_rate
== 0);
1435 st
->duration
/= sc
->time_rate
;
1438 mov_build_index(c
, st
);
1440 if (sc
->dref_id
-1 < sc
->drefs_count
&& sc
->drefs
[sc
->dref_id
-1].path
) {
1441 if (url_fopen(&sc
->pb
, sc
->drefs
[sc
->dref_id
-1].path
, URL_RDONLY
) < 0)
1442 av_log(c
->fc
, AV_LOG_ERROR
, "stream %d, error opening file %s: %s\n",
1443 st
->index
, sc
->drefs
[sc
->dref_id
-1].path
, strerror(errno
));
1447 switch (st
->codec
->codec_id
) {
1448 #if CONFIG_H261_DECODER
1451 #if CONFIG_H263_DECODER
1454 #if CONFIG_H264_DECODER
1457 #if CONFIG_MPEG4_DECODER
1458 case CODEC_ID_MPEG4
:
1460 st
->codec
->width
= 0; /* let decoder init width/height */
1461 st
->codec
->height
= 0;
1465 /* Do not need those anymore. */
1466 av_freep(&sc
->chunk_offsets
);
1467 av_freep(&sc
->stsc_data
);
1468 av_freep(&sc
->sample_sizes
);
1469 av_freep(&sc
->keyframes
);
1470 av_freep(&sc
->stts_data
);
1475 static int mov_read_ilst(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1478 c
->itunes_metadata
= 1;
1479 ret
= mov_read_default(c
, pb
, atom
);
1480 c
->itunes_metadata
= 0;
1484 static int mov_read_meta(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1486 while (atom
.size
> 8) {
1487 uint32_t tag
= get_le32(pb
);
1489 if (tag
== MKTAG('h','d','l','r')) {
1490 url_fseek(pb
, -8, SEEK_CUR
);
1492 return mov_read_default(c
, pb
, atom
);
1498 static int mov_read_tkhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1503 int64_t disp_transform
[2];
1504 int display_matrix
[3][2];
1505 AVStream
*st
= c
->fc
->streams
[c
->fc
->nb_streams
-1];
1506 MOVStreamContext
*sc
= st
->priv_data
;
1507 int version
= get_byte(pb
);
1509 get_be24(pb
); /* flags */
1511 MOV_TRACK_ENABLED 0x0001
1512 MOV_TRACK_IN_MOVIE 0x0002
1513 MOV_TRACK_IN_PREVIEW 0x0004
1514 MOV_TRACK_IN_POSTER 0x0008
1521 get_be32(pb
); /* creation time */
1522 get_be32(pb
); /* modification time */
1524 st
->id
= (int)get_be32(pb
); /* track id (NOT 0 !)*/
1525 get_be32(pb
); /* reserved */
1527 /* highlevel (considering edits) duration in movie timebase */
1528 (version
== 1) ? get_be64(pb
) : get_be32(pb
);
1529 get_be32(pb
); /* reserved */
1530 get_be32(pb
); /* reserved */
1532 get_be16(pb
); /* layer */
1533 get_be16(pb
); /* alternate group */
1534 get_be16(pb
); /* volume */
1535 get_be16(pb
); /* reserved */
1537 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1538 // they're kept in fixed point format through all calculations
1539 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1540 for (i
= 0; i
< 3; i
++) {
1541 display_matrix
[i
][0] = get_be32(pb
); // 16.16 fixed point
1542 display_matrix
[i
][1] = get_be32(pb
); // 16.16 fixed point
1543 get_be32(pb
); // 2.30 fixed point (not used)
1546 width
= get_be32(pb
); // 16.16 fixed point track width
1547 height
= get_be32(pb
); // 16.16 fixed point track height
1548 sc
->width
= width
>> 16;
1549 sc
->height
= height
>> 16;
1551 //transform the display width/height according to the matrix
1552 // skip this if the display matrix is the default identity matrix
1553 // to keep the same scale, use [width height 1<<16]
1554 if (width
&& height
&&
1555 (display_matrix
[0][0] != 65536 || display_matrix
[0][1] ||
1556 display_matrix
[1][0] || display_matrix
[1][1] != 65536 ||
1557 display_matrix
[2][0] || display_matrix
[2][1])) {
1558 for (i
= 0; i
< 2; i
++)
1560 (int64_t) width
* display_matrix
[0][i
] +
1561 (int64_t) height
* display_matrix
[1][i
] +
1562 ((int64_t) display_matrix
[2][i
] << 16);
1564 //sample aspect ratio is new width/height divided by old width/height
1565 st
->sample_aspect_ratio
= av_d2q(
1566 ((double) disp_transform
[0] * height
) /
1567 ((double) disp_transform
[1] * width
), INT_MAX
);
1572 static int mov_read_tfhd(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1574 MOVFragment
*frag
= &c
->fragment
;
1575 MOVTrackExt
*trex
= NULL
;
1576 int flags
, track_id
, i
;
1578 get_byte(pb
); /* version */
1579 flags
= get_be24(pb
);
1581 track_id
= get_be32(pb
);
1584 frag
->track_id
= track_id
;
1585 for (i
= 0; i
< c
->trex_count
; i
++)
1586 if (c
->trex_data
[i
].track_id
== frag
->track_id
) {
1587 trex
= &c
->trex_data
[i
];
1591 av_log(c
->fc
, AV_LOG_ERROR
, "could not find corresponding trex\n");
1595 if (flags
& 0x01) frag
->base_data_offset
= get_be64(pb
);
1596 else frag
->base_data_offset
= frag
->moof_offset
;
1597 if (flags
& 0x02) frag
->stsd_id
= get_be32(pb
);
1598 else frag
->stsd_id
= trex
->stsd_id
;
1600 frag
->duration
= flags
& 0x08 ? get_be32(pb
) : trex
->duration
;
1601 frag
->size
= flags
& 0x10 ? get_be32(pb
) : trex
->size
;
1602 frag
->flags
= flags
& 0x20 ? get_be32(pb
) : trex
->flags
;
1603 dprintf(c
->fc
, "frag flags 0x%x\n", frag
->flags
);
1607 static int mov_read_trex(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1611 if ((uint64_t)c
->trex_count
+1 >= UINT_MAX
/ sizeof(*c
->trex_data
))
1613 trex
= av_realloc(c
->trex_data
, (c
->trex_count
+1)*sizeof(*c
->trex_data
));
1615 return AVERROR(ENOMEM
);
1616 c
->trex_data
= trex
;
1617 trex
= &c
->trex_data
[c
->trex_count
++];
1618 get_byte(pb
); /* version */
1619 get_be24(pb
); /* flags */
1620 trex
->track_id
= get_be32(pb
);
1621 trex
->stsd_id
= get_be32(pb
);
1622 trex
->duration
= get_be32(pb
);
1623 trex
->size
= get_be32(pb
);
1624 trex
->flags
= get_be32(pb
);
1628 static int mov_read_trun(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1630 MOVFragment
*frag
= &c
->fragment
;
1631 AVStream
*st
= NULL
;
1632 MOVStreamContext
*sc
;
1635 int data_offset
= 0;
1636 unsigned entries
, first_sample_flags
= frag
->flags
;
1637 int flags
, distance
, i
;
1639 for (i
= 0; i
< c
->fc
->nb_streams
; i
++) {
1640 if (c
->fc
->streams
[i
]->id
== frag
->track_id
) {
1641 st
= c
->fc
->streams
[i
];
1646 av_log(c
->fc
, AV_LOG_ERROR
, "could not find corresponding track id %d\n", frag
->track_id
);
1650 if (sc
->pseudo_stream_id
+1 != frag
->stsd_id
)
1652 get_byte(pb
); /* version */
1653 flags
= get_be24(pb
);
1654 entries
= get_be32(pb
);
1655 dprintf(c
->fc
, "flags 0x%x entries %d\n", flags
, entries
);
1656 if (flags
& 0x001) data_offset
= get_be32(pb
);
1657 if (flags
& 0x004) first_sample_flags
= get_be32(pb
);
1658 if (flags
& 0x800) {
1660 if ((uint64_t)entries
+sc
->ctts_count
>= UINT_MAX
/sizeof(*sc
->ctts_data
))
1662 ctts_data
= av_realloc(sc
->ctts_data
,
1663 (entries
+sc
->ctts_count
)*sizeof(*sc
->ctts_data
));
1665 return AVERROR(ENOMEM
);
1666 sc
->ctts_data
= ctts_data
;
1669 offset
= frag
->base_data_offset
+ data_offset
;
1671 dprintf(c
->fc
, "first sample flags 0x%x\n", first_sample_flags
);
1672 for (i
= 0; i
< entries
; i
++) {
1673 unsigned sample_size
= frag
->size
;
1674 int sample_flags
= i
? frag
->flags
: first_sample_flags
;
1675 unsigned sample_duration
= frag
->duration
;
1678 if (flags
& 0x100) sample_duration
= get_be32(pb
);
1679 if (flags
& 0x200) sample_size
= get_be32(pb
);
1680 if (flags
& 0x400) sample_flags
= get_be32(pb
);
1681 if (flags
& 0x800) {
1682 sc
->ctts_data
[sc
->ctts_count
].count
= 1;
1683 sc
->ctts_data
[sc
->ctts_count
].duration
= get_be32(pb
);
1686 if ((keyframe
= st
->codec
->codec_type
== CODEC_TYPE_AUDIO
||
1687 (flags
& 0x004 && !i
&& !sample_flags
) || sample_flags
& 0x2000000))
1689 av_add_index_entry(st
, offset
, dts
, sample_size
, distance
,
1690 keyframe
? AVINDEX_KEYFRAME
: 0);
1691 dprintf(c
->fc
, "AVIndex stream %d, sample %d, offset %"PRIx64
", dts %"PRId64
", "
1692 "size %d, distance %d, keyframe %d\n", st
->index
, sc
->sample_count
+i
,
1693 offset
, dts
, sample_size
, distance
, keyframe
);
1695 assert(sample_duration
% sc
->time_rate
== 0);
1696 dts
+= sample_duration
/ sc
->time_rate
;
1697 offset
+= sample_size
;
1699 frag
->moof_offset
= offset
;
1704 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1705 /* like the files created with Adobe Premiere 5.0, for samples see */
1706 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1707 static int mov_read_wide(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1712 return 0; /* continue */
1713 if (get_be32(pb
) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1714 url_fskip(pb
, atom
.size
- 4);
1717 atom
.type
= get_le32(pb
);
1720 if (atom
.type
!= MKTAG('m','d','a','t')) {
1721 url_fskip(pb
, atom
.size
);
1724 err
= mov_read_mdat(c
, pb
, atom
);
1728 static int mov_read_cmov(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1733 uint8_t *moov_data
; /* uncompressed data */
1734 long cmov_len
, moov_len
;
1737 get_be32(pb
); /* dcom atom */
1738 if (get_le32(pb
) != MKTAG('d','c','o','m'))
1740 if (get_le32(pb
) != MKTAG('z','l','i','b')) {
1741 av_log(c
->fc
, AV_LOG_ERROR
, "unknown compression for cmov atom !");
1744 get_be32(pb
); /* cmvd atom */
1745 if (get_le32(pb
) != MKTAG('c','m','v','d'))
1747 moov_len
= get_be32(pb
); /* uncompressed size */
1748 cmov_len
= atom
.size
- 6 * 4;
1750 cmov_data
= av_malloc(cmov_len
);
1752 return AVERROR(ENOMEM
);
1753 moov_data
= av_malloc(moov_len
);
1756 return AVERROR(ENOMEM
);
1758 get_buffer(pb
, cmov_data
, cmov_len
);
1759 if(uncompress (moov_data
, (uLongf
*) &moov_len
, (const Bytef
*)cmov_data
, cmov_len
) != Z_OK
)
1760 goto free_and_return
;
1761 if(init_put_byte(&ctx
, moov_data
, moov_len
, 0, NULL
, NULL
, NULL
, NULL
) != 0)
1762 goto free_and_return
;
1763 atom
.type
= MKTAG('m','o','o','v');
1765 atom
.size
= moov_len
;
1767 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1769 ret
= mov_read_default(c
, &ctx
, atom
);
1775 av_log(c
->fc
, AV_LOG_ERROR
, "this file requires zlib support compiled in\n");
1780 /* edit list atom */
1781 static int mov_read_elst(MOVContext
*c
, ByteIOContext
*pb
, MOVAtom atom
)
1783 MOVStreamContext
*sc
= c
->fc
->streams
[c
->fc
->nb_streams
-1]->priv_data
;
1786 get_byte(pb
); /* version */
1787 get_be24(pb
); /* flags */
1788 edit_count
= get_be32(pb
); /* entries */
1790 for(i
=0; i
<edit_count
; i
++){
1792 int duration
= get_be32(pb
); /* Track duration */
1793 time
= get_be32(pb
); /* Media time */
1794 get_be32(pb
); /* Media rate */
1795 if (i
== 0 && time
>= -1) {
1796 sc
->time_offset
= time
!= -1 ? time
: -duration
;
1797 sc
->time_rate
= av_gcd(sc
->time_rate
, FFABS(sc
->time_offset
));
1802 av_log(c
->fc
, AV_LOG_WARNING
, "multiple edit list entries, "
1803 "a/v desync might occur, patch welcome\n");
1805 dprintf(c
->fc
, "track[%i].edit_count = %i\n", c
->fc
->nb_streams
-1, edit_count
);
1809 static const MOVParseTableEntry mov_default_parse_table
[] = {
1810 { MKTAG('a','v','s','s'), mov_read_extradata
},
1811 { MKTAG('c','o','6','4'), mov_read_stco
},
1812 { MKTAG('c','t','t','s'), mov_read_ctts
}, /* composition time to sample */
1813 { MKTAG('d','i','n','f'), mov_read_default
},
1814 { MKTAG('d','r','e','f'), mov_read_dref
},
1815 { MKTAG('e','d','t','s'), mov_read_default
},
1816 { MKTAG('e','l','s','t'), mov_read_elst
},
1817 { MKTAG('e','n','d','a'), mov_read_enda
},
1818 { MKTAG('f','i','e','l'), mov_read_extradata
},
1819 { MKTAG('f','t','y','p'), mov_read_ftyp
},
1820 { MKTAG('g','l','b','l'), mov_read_glbl
},
1821 { MKTAG('h','d','l','r'), mov_read_hdlr
},
1822 { MKTAG('i','l','s','t'), mov_read_ilst
},
1823 { MKTAG('j','p','2','h'), mov_read_extradata
},
1824 { MKTAG('m','d','a','t'), mov_read_mdat
},
1825 { MKTAG('m','d','h','d'), mov_read_mdhd
},
1826 { MKTAG('m','d','i','a'), mov_read_default
},
1827 { MKTAG('m','e','t','a'), mov_read_meta
},
1828 { MKTAG('m','i','n','f'), mov_read_default
},
1829 { MKTAG('m','o','o','f'), mov_read_moof
},
1830 { MKTAG('m','o','o','v'), mov_read_moov
},
1831 { MKTAG('m','v','e','x'), mov_read_default
},
1832 { MKTAG('m','v','h','d'), mov_read_mvhd
},
1833 { MKTAG('S','M','I',' '), mov_read_smi
}, /* Sorenson extension ??? */
1834 { MKTAG('a','l','a','c'), mov_read_extradata
}, /* alac specific atom */
1835 { MKTAG('a','v','c','C'), mov_read_glbl
},
1836 { MKTAG('p','a','s','p'), mov_read_pasp
},
1837 { MKTAG('s','t','b','l'), mov_read_default
},
1838 { MKTAG('s','t','c','o'), mov_read_stco
},
1839 { MKTAG('s','t','s','c'), mov_read_stsc
},
1840 { MKTAG('s','t','s','d'), mov_read_stsd
}, /* sample description */
1841 { MKTAG('s','t','s','s'), mov_read_stss
}, /* sync sample */
1842 { MKTAG('s','t','s','z'), mov_read_stsz
}, /* sample size */
1843 { MKTAG('s','t','t','s'), mov_read_stts
},
1844 { MKTAG('s','t','z','2'), mov_read_stsz
}, /* compact sample size */
1845 { MKTAG('t','k','h','d'), mov_read_tkhd
}, /* track header */
1846 { MKTAG('t','f','h','d'), mov_read_tfhd
}, /* track fragment header */
1847 { MKTAG('t','r','a','k'), mov_read_trak
},
1848 { MKTAG('t','r','a','f'), mov_read_default
},
1849 { MKTAG('t','r','e','x'), mov_read_trex
},
1850 { MKTAG('t','r','u','n'), mov_read_trun
},
1851 { MKTAG('u','d','t','a'), mov_read_default
},
1852 { MKTAG('w','a','v','e'), mov_read_wave
},
1853 { MKTAG('e','s','d','s'), mov_read_esds
},
1854 { MKTAG('w','i','d','e'), mov_read_wide
}, /* place holder */
1855 { MKTAG('c','m','o','v'), mov_read_cmov
},
1859 static int mov_probe(AVProbeData
*p
)
1861 unsigned int offset
;
1865 /* check file header */
1868 /* ignore invalid offset */
1869 if ((offset
+ 8) > (unsigned int)p
->buf_size
)
1871 tag
= AV_RL32(p
->buf
+ offset
+ 4);
1873 /* check for obvious tags */
1874 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1875 case MKTAG('m','o','o','v'):
1876 case MKTAG('m','d','a','t'):
1877 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1878 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
1879 case MKTAG('f','t','y','p'):
1880 return AVPROBE_SCORE_MAX
;
1881 /* those are more common words, so rate then a bit less */
1882 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1883 case MKTAG('w','i','d','e'):
1884 case MKTAG('f','r','e','e'):
1885 case MKTAG('j','u','n','k'):
1886 case MKTAG('p','i','c','t'):
1887 return AVPROBE_SCORE_MAX
- 5;
1888 case MKTAG(0x82,0x82,0x7f,0x7d):
1889 case MKTAG('s','k','i','p'):
1890 case MKTAG('u','u','i','d'):
1891 case MKTAG('p','r','f','l'):
1892 offset
= AV_RB32(p
->buf
+offset
) + offset
;
1893 /* if we only find those cause probedata is too small at least rate them */
1894 score
= AVPROBE_SCORE_MAX
- 50;
1897 /* unrecognized tag */
1904 static int mov_read_header(AVFormatContext
*s
, AVFormatParameters
*ap
)
1906 MOVContext
*mov
= s
->priv_data
;
1907 ByteIOContext
*pb
= s
->pb
;
1909 MOVAtom atom
= { 0, 0, 0 };
1912 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1913 if(!url_is_streamed(pb
))
1914 atom
.size
= url_fsize(pb
);
1916 atom
.size
= INT64_MAX
;
1918 /* check MOV header */
1919 if ((err
= mov_read_default(mov
, pb
, atom
)) < 0) {
1920 av_log(s
, AV_LOG_ERROR
, "error reading header: %d\n", err
);
1923 if (!mov
->found_moov
) {
1924 av_log(s
, AV_LOG_ERROR
, "moov atom not found\n");
1927 dprintf(mov
->fc
, "on_parse_exit_offset=%lld\n", url_ftell(pb
));
1932 static int mov_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
1934 MOVContext
*mov
= s
->priv_data
;
1935 MOVStreamContext
*sc
= 0;
1936 AVIndexEntry
*sample
= 0;
1937 int64_t best_dts
= INT64_MAX
;
1940 for (i
= 0; i
< s
->nb_streams
; i
++) {
1941 AVStream
*st
= s
->streams
[i
];
1942 MOVStreamContext
*msc
= st
->priv_data
;
1943 if (st
->discard
!= AVDISCARD_ALL
&& msc
->pb
&& msc
->current_sample
< st
->nb_index_entries
) {
1944 AVIndexEntry
*current_sample
= &st
->index_entries
[msc
->current_sample
];
1945 int64_t dts
= av_rescale(current_sample
->timestamp
* (int64_t)msc
->time_rate
,
1946 AV_TIME_BASE
, msc
->time_scale
);
1947 dprintf(s
, "stream %d, sample %d, dts %"PRId64
"\n", i
, msc
->current_sample
, dts
);
1948 if (!sample
|| (url_is_streamed(s
->pb
) && current_sample
->pos
< sample
->pos
) ||
1949 (!url_is_streamed(s
->pb
) &&
1950 ((msc
->pb
!= s
->pb
&& dts
< best_dts
) || (msc
->pb
== s
->pb
&&
1951 ((FFABS(best_dts
- dts
) <= AV_TIME_BASE
&& current_sample
->pos
< sample
->pos
) ||
1952 (FFABS(best_dts
- dts
) > AV_TIME_BASE
&& dts
< best_dts
)))))) {
1953 sample
= current_sample
;
1960 mov
->found_mdat
= 0;
1961 if (!url_is_streamed(s
->pb
) ||
1962 mov_read_default(mov
, s
->pb
, (MOVAtom
){ 0, 0, INT64_MAX
}) < 0 ||
1965 dprintf(s
, "read fragments, offset 0x%llx\n", url_ftell(s
->pb
));
1968 /* must be done just before reading, to avoid infinite loop on sample */
1969 sc
->current_sample
++;
1970 if (url_fseek(sc
->pb
, sample
->pos
, SEEK_SET
) != sample
->pos
) {
1971 av_log(mov
->fc
, AV_LOG_ERROR
, "stream %d, offset 0x%"PRIx64
": partial file\n",
1972 sc
->ffindex
, sample
->pos
);
1975 ret
= av_get_packet(sc
->pb
, pkt
, sample
->size
);
1978 #if CONFIG_DV_DEMUXER
1979 if (mov
->dv_demux
&& sc
->dv_audio_container
) {
1980 dv_produce_packet(mov
->dv_demux
, pkt
, pkt
->data
, pkt
->size
);
1983 if (dv_get_packet(mov
->dv_demux
, pkt
) < 0)
1987 pkt
->stream_index
= sc
->ffindex
;
1988 pkt
->dts
= sample
->timestamp
;
1989 if (sc
->ctts_data
) {
1990 assert(sc
->ctts_data
[sc
->ctts_index
].duration
% sc
->time_rate
== 0);
1991 pkt
->pts
= pkt
->dts
+ sc
->ctts_data
[sc
->ctts_index
].duration
/ sc
->time_rate
;
1992 /* update ctts context */
1994 if (sc
->ctts_index
< sc
->ctts_count
&&
1995 sc
->ctts_data
[sc
->ctts_index
].count
== sc
->ctts_sample
) {
1997 sc
->ctts_sample
= 0;
2000 pkt
->dts
= AV_NOPTS_VALUE
;
2002 AVStream
*st
= s
->streams
[sc
->ffindex
];
2003 int64_t next_dts
= (sc
->current_sample
< st
->nb_index_entries
) ?
2004 st
->index_entries
[sc
->current_sample
].timestamp
: st
->duration
;
2005 pkt
->duration
= next_dts
- pkt
->dts
;
2006 pkt
->pts
= pkt
->dts
;
2008 pkt
->flags
|= sample
->flags
& AVINDEX_KEYFRAME
? PKT_FLAG_KEY
: 0;
2009 pkt
->pos
= sample
->pos
;
2010 dprintf(s
, "stream %d, pts %"PRId64
", dts %"PRId64
", pos 0x%"PRIx64
", duration %d\n",
2011 pkt
->stream_index
, pkt
->pts
, pkt
->dts
, pkt
->pos
, pkt
->duration
);
2015 static int mov_seek_stream(AVStream
*st
, int64_t timestamp
, int flags
)
2017 MOVStreamContext
*sc
= st
->priv_data
;
2018 int sample
, time_sample
;
2021 sample
= av_index_search_timestamp(st
, timestamp
, flags
);
2022 dprintf(st
->codec
, "stream %d, timestamp %"PRId64
", sample %d\n", st
->index
, timestamp
, sample
);
2023 if (sample
< 0) /* not sure what to do */
2025 sc
->current_sample
= sample
;
2026 dprintf(st
->codec
, "stream %d, found sample %d\n", st
->index
, sc
->current_sample
);
2027 /* adjust ctts index */
2028 if (sc
->ctts_data
) {
2030 for (i
= 0; i
< sc
->ctts_count
; i
++) {
2031 int next
= time_sample
+ sc
->ctts_data
[i
].count
;
2032 if (next
> sc
->current_sample
) {
2034 sc
->ctts_sample
= sc
->current_sample
- time_sample
;
2043 static int mov_read_seek(AVFormatContext
*s
, int stream_index
, int64_t sample_time
, int flags
)
2046 int64_t seek_timestamp
, timestamp
;
2050 if (stream_index
>= s
->nb_streams
)
2052 if (sample_time
< 0)
2055 st
= s
->streams
[stream_index
];
2056 sample
= mov_seek_stream(st
, sample_time
, flags
);
2060 /* adjust seek timestamp to found sample timestamp */
2061 seek_timestamp
= st
->index_entries
[sample
].timestamp
;
2063 for (i
= 0; i
< s
->nb_streams
; i
++) {
2065 if (stream_index
== i
|| st
->discard
== AVDISCARD_ALL
)
2068 timestamp
= av_rescale_q(seek_timestamp
, s
->streams
[stream_index
]->time_base
, st
->time_base
);
2069 mov_seek_stream(st
, timestamp
, flags
);
2074 static int mov_read_close(AVFormatContext
*s
)
2076 MOVContext
*mov
= s
->priv_data
;
2079 for (i
= 0; i
< s
->nb_streams
; i
++) {
2080 AVStream
*st
= s
->streams
[i
];
2081 MOVStreamContext
*sc
= st
->priv_data
;
2083 av_freep(&sc
->ctts_data
);
2084 for (j
= 0; j
< sc
->drefs_count
; j
++)
2085 av_freep(&sc
->drefs
[j
].path
);
2086 av_freep(&sc
->drefs
);
2087 if (sc
->pb
&& sc
->pb
!= s
->pb
)
2090 av_freep(&st
->codec
->palctrl
);
2093 if (mov
->dv_demux
) {
2094 for(i
= 0; i
< mov
->dv_fctx
->nb_streams
; i
++) {
2095 av_freep(&mov
->dv_fctx
->streams
[i
]->codec
);
2096 av_freep(&mov
->dv_fctx
->streams
[i
]);
2098 av_freep(&mov
->dv_fctx
);
2099 av_freep(&mov
->dv_demux
);
2102 av_freep(&mov
->trex_data
);
2107 AVInputFormat mov_demuxer
= {
2108 "mov,mp4,m4a,3gp,3g2,mj2",
2109 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),