3
* Copyright (c) 2001 Fabrice Bellard.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
7
* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* First version by Francois Revol revol@free.fr
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* Features and limitations:
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* - reads most of the QT files I have (at least the structure),
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* the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
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* FIXED, Francois Revol, 07/17/2002
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* - ffmpeg has nearly none of the usual QuickTime codecs,
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* although I succesfully dumped raw and mp3 audio tracks off .mov files.
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* Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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* - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
37
* (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
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* http://mpeg.telecomitalialab.com/faq.htm
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* - the code is quite ugly... maybe I won't do it recursive next time :-)
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* Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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* when coding this :) (it's a writer anyway)
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* Reference documents:
45
* http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
47
* http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
48
* http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
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* QuickTime is a trademark of Apple (AFAIK :))
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/* allows chunk splitting - should work now... */
59
/* in case you can't read a file, try commenting */
60
#define MOV_SPLIT_CHUNKS
62
/* Special handling for movies created with Minolta Dimaxe Xi*/
63
/* this fix should not interfere with other .mov files, but just in case*/
64
#define MOV_MINOLTA_FIX
66
/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
67
/* so we first list them as this, then clean up the list of streams we give back, */
68
/* getting rid of these */
69
#define CODEC_TYPE_MOV_OTHER (enum CodecType) 2
71
static const CodecTag mov_video_tags[] = {
72
/* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
73
/* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
74
/* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
75
/* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
80
{ CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
81
{ CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
82
{ CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
83
{ CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
84
{ CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
85
/* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
86
/* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
88
{ CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
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{ CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
90
{ CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
91
{ CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
92
{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
93
{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
94
/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
95
{ CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
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{ CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
97
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
98
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
99
/* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
100
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
101
{ CODEC_ID_NONE, 0 },
104
static const CodecTag mov_audio_tags[] = {
105
/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
106
{ CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
107
/* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
108
{ CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
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{ CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
110
{ CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
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{ CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
112
{ CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
113
{ CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
114
{ CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
116
{ CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
117
{ CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
118
{ CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
119
/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
121
{ CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG 4 AAC or audio ? */
122
/* The standard for mpeg4 audio is still not normalised AFAIK anyway */
123
{ CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
124
{ CODEC_ID_NONE, 0 },
127
/* the QuickTime file format is quite convoluted...
128
* it has lots of index tables, each indexing something in another one...
129
* Here we just use what is needed to read the chunks
132
typedef struct MOV_sample_to_chunk_tbl {
136
} MOV_sample_to_chunk_tbl;
141
int64_t size; /* total size (excluding the size and type fields) */
153
uint32_t flags; // 24bit
155
/* 0x03 ESDescrTag */
157
#define MP4ODescrTag 0x01
158
#define MP4IODescrTag 0x02
159
#define MP4ESDescrTag 0x03
160
#define MP4DecConfigDescrTag 0x04
161
#define MP4DecSpecificDescrTag 0x05
162
#define MP4SLConfigDescrTag 0x06
163
#define MP4ContentIdDescrTag 0x07
164
#define MP4SupplContentIdDescrTag 0x08
165
#define MP4IPIPtrDescrTag 0x09
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#define MP4IPMPPtrDescrTag 0x0A
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#define MP4IPMPDescrTag 0x0B
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#define MP4RegistrationDescrTag 0x0D
169
#define MP4ESIDIncDescrTag 0x0E
170
#define MP4ESIDRefDescrTag 0x0F
171
#define MP4FileIODescrTag 0x10
172
#define MP4FileODescrTag 0x11
173
#define MP4ExtProfileLevelDescrTag 0x13
174
#define MP4ExtDescrTagsStart 0x80
175
#define MP4ExtDescrTagsEnd 0xFE
176
uint8_t stream_priority;
178
/* 0x04 DecConfigDescrTag */
179
uint8_t object_type_id;
181
/* XXX: really streamType is
182
* only 6bit, followed by:
186
uint32_t buffer_size_db; // 24
187
uint32_t max_bitrate;
188
uint32_t avg_bitrate;
190
/* 0x05 DecSpecificDescrTag */
191
uint8_t decoder_cfg_len;
192
uint8_t *decoder_cfg;
194
/* 0x06 SLConfigDescrTag */
195
uint8_t sl_config_len;
199
struct MOVParseTableEntry;
201
typedef struct MOVStreamContext {
202
int ffindex; /* the ffmpeg stream id */
203
int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
206
int64_t *chunk_offsets;
207
long sample_to_chunk_sz;
208
MOV_sample_to_chunk_tbl *sample_to_chunk;
209
long sample_to_chunk_index;
215
long left_in_chunk; /* how many samples before next chunk */
216
/* specific MPEG4 header which is added at the beginning of the stream */
218
uint8_t *header_data;
222
typedef struct MOVContext {
223
int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
226
int duration; /* duration of the longest track */
227
int found_moov; /* when both 'moov' and 'mdat' sections has been found */
228
int found_mdat; /* we suppose we have enough data to read the file */
232
/* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
233
* but we need the info to be able to skip data from those streams in the 'mdat' section
235
MOVStreamContext *streams[MAX_STREAMS];
237
int64_t next_chunk_offset;
238
MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
240
MOV_ctab_t **ctab; /* color tables */
241
const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
242
/* NOTE: for recursion save to/ restore from local variable! */
246
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
248
/* those functions parse an atom */
250
1: found what I wanted, exit
251
0: continue to parse next atom
252
-1: error occured, exit
254
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
256
/* links atom IDs to parse functions */
257
typedef struct MOVParseTableEntry {
259
mov_parse_function func;
260
} MOVParseTableEntry;
264
* XXX: static sux, even more in a multithreaded environment...
265
* Avoid them. This is here just to help debugging.
267
static int debug_indent = 0;
268
void print_atom(const char *str, MOV_atom_t atom)
271
tag = (unsigned int) atom.type;
273
if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
277
printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
282
(unsigned int)atom.offset,
283
(unsigned int)atom.size);
284
assert((unsigned int)atom.size < 0x7fffffff);// catching errors
287
#define print_atom(a,b)
291
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
293
print_atom("leaf", atom);
296
url_fskip(pb, atom.size);
297
/* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
301
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
303
int64_t total_size = 0;
309
print_atom("default", atom);
313
a.offset = atom.offset;
316
atom.size = 0x7fffffffffffffffLL;
317
while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
321
a.size = get_be32(pb);
322
a.type = get_le32(pb);
326
//printf("type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
327
if (a.size == 1) { /* 64 bit extended size */
328
a.size = get_be64(pb) - 8;
333
a.size = atom.size - total_size;
337
for (i = 0; c->parse_table[i].type != 0L
338
&& c->parse_table[i].type != a.type; i++)
342
// printf(" i=%ld\n", i);
343
if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
344
// url_seek(pb, atom.offset+atom.size, SEEK_SET);
346
print_atom("unknown", a);
348
url_fskip(pb, a.size);
351
//char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
352
//print_atom(b, type, offset, size);
354
err = (c->parse_table[i].func)(c, pb, a);
358
total_size += a.size;
361
if (!err && total_size < atom.size && atom.size < 0x7ffff) {
362
//printf("RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
363
url_fskip(pb, atom.size - total_size);
372
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
376
//url_fskip(pb, atom.size); // for now
377
c->ctab = av_realloc(c->ctab, ++c->ctab_size);
378
t = c->ctab[c->ctab_size];
379
t->seed = get_be32(pb);
380
t->flags = get_be16(pb);
381
t->size = get_be16(pb) + 1;
382
len = 2 * t->size * 4;
384
t->clrs = av_malloc(len); // 16bit A R G B
386
get_buffer(pb, t->clrs, len);
392
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
394
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
399
print_atom("hdlr", atom);
401
get_byte(pb); /* version */
402
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
405
ctype = get_le32(pb);
406
type = get_le32(pb); /* component subtype */
409
printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
410
printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
413
/* XXX: yeah this is ugly... */
414
if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
415
if(type == MKTAG('v', 'i', 'd', 'e'))
417
else if(type == MKTAG('s', 'o', 'u', 'n'))
419
} else if(ctype == 0) { /* MP4 */
420
if(type == MKTAG('v', 'i', 'd', 'e'))
422
else if(type == MKTAG('s', 'o', 'u', 'n'))
424
else if(type == MKTAG('o', 'd', 's', 'm'))
426
else if(type == MKTAG('s', 'd', 's', 'm'))
428
} else puts("hdlr: meta");
431
if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
432
/* helps parsing the string hereafter... */
434
if(type == MKTAG('v', 'i', 'd', 'e'))
435
st->codec.codec_type = CODEC_TYPE_VIDEO;
436
else if(type == MKTAG('s', 'o', 'u', 'n'))
437
st->codec.codec_type = CODEC_TYPE_AUDIO;
438
} else if(ctype == 0) { /* MP4 */
439
/* helps parsing the string hereafter... */
441
if(type == MKTAG('v', 'i', 'd', 'e'))
442
st->codec.codec_type = CODEC_TYPE_VIDEO;
443
else if(type == MKTAG('s', 'o', 'u', 'n'))
444
st->codec.codec_type = CODEC_TYPE_AUDIO;
446
get_be32(pb); /* component manufacture */
447
get_be32(pb); /* component flags */
448
get_be32(pb); /* component flags mask */
451
return 0; /* nothing left to read */
452
/* XXX: MP4 uses a C string, not a pascal one */
457
while(get_byte(pb) && (++len < (atom.size - 24)));
459
/* .mov: PASCAL string */
465
buf = (uint8_t*) av_malloc(len+1);
467
get_buffer(pb, buf, len);
469
printf("**buf='%s'\n", buf);
479
static int mov_mp4_read_descr_len(ByteIOContext *pb)
484
int c = get_byte(pb);
485
len = (len << 7) | (c & 0x7f);
492
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
496
len = mov_mp4_read_descr_len(pb);
498
printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
503
static inline unsigned int get_be24(ByteIOContext *s)
506
val = get_byte(s) << 16;
507
val |= get_byte(s) << 8;
512
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
514
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
515
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
516
int64_t start_pos = url_ftell(pb);
519
print_atom("esds", atom);
521
/* Well, broken but suffisant for some MP4 streams */
522
get_be32(pb); /* version + flags */
523
len = mov_mp4_read_descr(pb, &tag);
524
if (tag == MP4ESDescrTag) {
525
get_be16(pb); /* ID */
526
get_byte(pb); /* priority */
528
get_be16(pb); /* ID */
530
len = mov_mp4_read_descr(pb, &tag);
531
if (tag == MP4DecConfigDescrTag) {
532
sc->esds.object_type_id = get_byte(pb);
533
sc->esds.stream_type = get_byte(pb);
534
sc->esds.buffer_size_db = get_be24(pb);
535
sc->esds.max_bitrate = get_be32(pb);
536
sc->esds.avg_bitrate = get_be32(pb);
538
len = mov_mp4_read_descr(pb, &tag);
539
//printf("LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
540
if (tag == MP4DecSpecificDescrTag) {
542
printf("Specific MPEG4 header len=%d\n", len);
544
st->codec.extradata = (uint8_t*) av_mallocz(len);
545
if (st->codec.extradata) {
546
get_buffer(pb, st->codec.extradata, len);
547
st->codec.extradata_size = len;
551
/* in any case, skip garbage */
552
url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
556
/* this atom contains actual media data */
557
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
559
print_atom("mdat", atom);
561
if(atom.size == 0) /* wrong one (MP4) */
564
c->mdat_offset = atom.offset;
565
c->mdat_size = atom.size;
567
return 1; /* found both, just go */
568
url_fskip(pb, atom.size);
569
return 0; /* now go for moov */
572
/* this atom should contain all header atoms */
573
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
577
print_atom("moov", atom);
579
err = mov_read_default(c, pb, atom);
580
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
581
/* so we don't parse the whole file if over a network */
584
return 1; /* found both, just go */
585
return 0; /* now go for mdat */
589
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
591
print_atom("mdhd", atom);
593
get_byte(pb); /* version */
595
get_byte(pb); get_byte(pb);
596
get_byte(pb); /* flags */
598
get_be32(pb); /* creation time */
599
get_be32(pb); /* modification time */
601
c->streams[c->total_streams]->time_scale = get_be32(pb);
604
printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
606
get_be32(pb); /* duration */
608
get_be16(pb); /* language */
609
get_be16(pb); /* quality */
614
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
616
print_atom("mvhd", atom);
618
get_byte(pb); /* version */
619
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
621
get_be32(pb); /* creation time */
622
get_be32(pb); /* modification time */
623
c->time_scale = get_be32(pb); /* time scale */
625
printf("time scale = %i\n", c->time_scale);
627
c->duration = get_be32(pb); /* duration */
628
get_be32(pb); /* preferred scale */
630
get_be16(pb); /* preferred volume */
632
url_fskip(pb, 10); /* reserved */
634
url_fskip(pb, 36); /* display matrix */
636
get_be32(pb); /* preview time */
637
get_be32(pb); /* preview duration */
638
get_be32(pb); /* poster time */
639
get_be32(pb); /* selection time */
640
get_be32(pb); /* selection duration */
641
get_be32(pb); /* current time */
642
get_be32(pb); /* next track ID */
647
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
649
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
651
// currently SVQ3 decoder expect full STSD header - so let's fake it
652
// this should be fixed and just SMI header should be passed
653
av_free(st->codec.extradata);
654
st->codec.extradata_size = 0x5a + atom.size;
655
st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
657
if (st->codec.extradata) {
658
strcpy(st->codec.extradata, "SVQ3"); // fake
659
get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
660
//printf("Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
662
url_fskip(pb, atom.size);
667
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
669
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
670
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
673
print_atom("stco", atom);
675
get_byte(pb); /* version */
676
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
678
entries = get_be32(pb);
679
sc->chunk_count = entries;
680
sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
681
if (!sc->chunk_offsets)
683
if (atom.type == MKTAG('s', 't', 'c', 'o')) {
684
for(i=0; i<entries; i++) {
685
sc->chunk_offsets[i] = get_be32(pb);
687
} else if (atom.type == MKTAG('c', 'o', '6', '4')) {
688
for(i=0; i<entries; i++) {
689
sc->chunk_offsets[i] = get_be64(pb);
695
for(i=0; i<entries; i++) {
696
printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
703
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
705
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
706
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
707
int entries, frames_per_sample;
710
print_atom("stsd", atom);
712
get_byte(pb); /* version */
713
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
715
entries = get_be32(pb);
717
while(entries--) { //Parsing Sample description table
719
int size = get_be32(pb); /* size */
720
format = get_le32(pb); /* data format */
722
get_be32(pb); /* reserved */
723
get_be16(pb); /* reserved */
724
get_be16(pb); /* index */
726
/* for MPEG4: set codec type by looking for it */
727
id = codec_get_id(mov_video_tags, format);
730
codec = avcodec_find_decoder(id);
732
st->codec.codec_type = codec->type;
735
printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
737
(format >> 0) & 0xff,
738
(format >> 8) & 0xff,
739
(format >> 16) & 0xff,
740
(format >> 24) & 0xff,
741
st->codec.codec_type);
743
st->codec.codec_tag = format;
744
if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
745
MOV_atom_t a = { 0, 0, 0 };
746
st->codec.codec_id = id;
747
get_be16(pb); /* version */
748
get_be16(pb); /* revision level */
749
get_be32(pb); /* vendor */
750
get_be32(pb); /* temporal quality */
751
get_be32(pb); /* spacial quality */
752
st->codec.width = get_be16(pb); /* width */
753
st->codec.height = get_be16(pb); /* height */
755
if (st->codec.codec_id == CODEC_ID_MPEG4) {
756
/* in some MPEG4 the width/height are not correct, so
757
we ignore this info */
759
st->codec.height = 0;
762
get_be32(pb); /* horiz resolution */
763
get_be32(pb); /* vert resolution */
764
get_be32(pb); /* data size, always 0 */
765
frames_per_sample = get_be16(pb); /* frames per samples */
767
printf("frames/samples = %d\n", frames_per_sample);
769
get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
771
st->codec.bits_per_sample = get_be16(pb); /* depth */
772
st->codec.color_table_id = get_be16(pb); /* colortable id */
774
/* These are set in mov_read_stts and might already be set!
775
st->codec.frame_rate = 25;
776
st->codec.frame_rate_base = 1;
778
size -= (16+8*4+2+32+2*2);
784
a.size = get_be32(pb);
785
a.type = get_le32(pb);
788
printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
789
(a.type >> 0) & 0xff,
790
(a.type >> 8) & 0xff,
791
(a.type >> 16) & 0xff,
792
(a.type >> 24) & 0xff,
795
start_pos = url_ftell(pb);
798
case MKTAG('e', 's', 'd', 's'):
801
/* Well, broken but suffisant for some MP4 streams */
802
get_be32(pb); /* version + flags */
803
len = mov_mp4_read_descr(pb, &tag);
806
get_be16(pb); /* ID */
807
get_byte(pb); /* priority */
808
len = mov_mp4_read_descr(pb, &tag);
811
/* MP4DecConfigDescrTag */
812
get_byte(pb); /* objectTypeId */
813
get_be32(pb); /* streamType + buffer size */
814
get_be32(pb); /* max bit rate */
815
get_be32(pb); /* avg bit rate */
816
len = mov_mp4_read_descr(pb, &tag);
819
/* MP4DecSpecificDescrTag */
821
printf("Specific MPEG4 header len=%d\n", len);
823
sc->header_data = av_mallocz(len);
824
if (sc->header_data) {
825
get_buffer(pb, sc->header_data, len);
826
sc->header_len = len;
829
/* in any case, skip garbage */
836
printf("ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
838
url_fskip(pb, (atom.size - 8) -
839
((url_ftell(pb) - start_pos)));
840
size -= atom.size - 8;
844
/* unknown extension */
849
mov_read_default(c, pb, a);
852
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
853
if(st->codec.codec_id==CODEC_ID_AMR_NB) //from TS26.244
856
printf("AMR-NB audio identified!!\n");
858
get_be32(pb);get_be32(pb); //Reserved_8
859
get_be16(pb);//Reserved_2
860
get_be16(pb);//Reserved_2
861
get_be32(pb);//Reserved_4
862
get_be16(pb);//TimeScale
863
get_be16(pb);//Reserved_2
865
//AMRSpecificBox.(10 bytes)
874
get_be32(pb); //type=='damr'
878
get_be32(pb); //vendor
879
get_byte(pb); //decoder version
880
get_be16(pb); //mode_set
881
get_byte(pb); //mode_change_period
882
get_byte(pb); //frames_per_sample
885
printf("Audio: damr_type=%c%c%c%c damr_size=%d damr_vendor=%c%c%c%c\n",
886
(damr_type >> 24) & 0xff,
887
(damr_type >> 16) & 0xff,
888
(damr_type >> 8) & 0xff,
889
(damr_type >> 0) & 0xff,
891
(damr_vendor >> 24) & 0xff,
892
(damr_vendor >> 16) & 0xff,
893
(damr_vendor >> 8) & 0xff,
894
(damr_vendor >> 0) & 0xff
898
st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
899
st->codec.sample_rate=8000;
900
st->codec.channels=1;
901
st->codec.bits_per_sample=16;
902
st->codec.bit_rate=0; /*It is not possible to tell this before we have
903
an audio frame and even then every frame can be different*/
905
else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
907
//This is some stuff for the hint track, lets ignore it!
908
//Do some mp4 auto detect.
911
url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
913
else if(size>=(16+20))
914
{//16 bytes read, reading atleast 20 more
916
printf("audio size=0x%X\n",size);
918
uint16_t version = get_be16(pb); /* version */
919
get_be16(pb); /* revision level */
920
get_be32(pb); /* vendor */
922
st->codec.channels = get_be16(pb); /* channel count */
923
st->codec.bits_per_sample = get_be16(pb); /* sample size */
925
/* handle specific s8 codec */
926
get_be16(pb); /* compression id = 0*/
927
get_be16(pb); /* packet size = 0 */
929
st->codec.sample_rate = ((get_be32(pb) >> 16));
930
//printf("CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
932
switch (st->codec.codec_id) {
933
case CODEC_ID_PCM_S16BE:
934
if (st->codec.bits_per_sample == 8)
935
st->codec.codec_id = CODEC_ID_PCM_S8;
937
case CODEC_ID_PCM_U8:
938
st->codec.bit_rate = st->codec.sample_rate * 8;
944
//Read QT version 1 fields. In version 0 theese dont exist
946
printf("version =%d mp4=%d\n",version,c->mp4);
947
printf("size-(16+20+16)=%d\n",size-(16+20+16));
949
if((version==1) && size>=(16+20+16))
951
get_be32(pb); /* samples per packet */
952
get_be32(pb); /* bytes per packet */
953
get_be32(pb); /* bytes per frame */
954
get_be32(pb); /* bytes per sample */
957
//Optional, additional atom-based fields
959
printf("offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
960
(format >> 0) & 0xff,
961
(format >> 8) & 0xff,
962
(format >> 16) & 0xff,
963
(format >> 24) & 0xff);
965
MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
966
mov_read_default(c, pb, a);
971
//We should be down to 0 bytes here, but lets make sure.
975
printf("skipping 0x%X bytes\n",size-(16+20));
983
//Unknown size, but lets do our best and skip the rest.
985
printf("Strange size, skipping 0x%X bytes\n",size);
995
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
997
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
998
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1001
print_atom("stsc", atom);
1003
get_byte(pb); /* version */
1004
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1006
entries = get_be32(pb);
1008
printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1010
sc->sample_to_chunk_sz = entries;
1011
sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1012
if (!sc->sample_to_chunk)
1014
for(i=0; i<entries; i++) {
1015
sc->sample_to_chunk[i].first = get_be32(pb);
1016
sc->sample_to_chunk[i].count = get_be32(pb);
1017
sc->sample_to_chunk[i].id = get_be32(pb);
1019
/* printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1025
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1027
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1028
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1031
print_atom("stsz", atom);
1033
get_byte(pb); /* version */
1034
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1036
sc->sample_size = get_be32(pb);
1037
entries = get_be32(pb);
1038
sc->sample_count = entries;
1040
printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1043
return 0; /* there isn't any table following */
1044
sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1045
if (!sc->sample_sizes)
1047
for(i=0; i<entries; i++) {
1048
sc->sample_sizes[i] = get_be32(pb);
1050
/* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1056
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1058
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1059
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1062
int total_sample_count=0;
1064
print_atom("stts", atom);
1066
get_byte(pb); /* version */
1067
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1068
entries = get_be32(pb);
1072
printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1074
for(i=0; i<entries; i++) {
1075
int sample_duration;
1078
sample_count=get_be32(pb);
1079
sample_duration = get_be32(pb);
1081
printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1083
duration+=sample_duration*sample_count;
1084
total_sample_count+=sample_count;
1086
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1088
if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1089
st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1090
st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1092
printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1098
#define MAX(a,b) a>b?a:b
1099
#define MIN(a,b) a>b?b:a
1100
/*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1103
//Find greatest common divisor to avoid overflow using the Euclidean Algorithm...
1104
uint32_t max=MAX(duration,total_sample_count);
1105
uint32_t min=MIN(duration,total_sample_count);
1106
uint32_t spare=max%min;
1116
total_sample_count/=min;
1118
//Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone.
1119
//To get better precision, we use the duration as frame_rate_base
1121
st->codec.frame_rate_base=duration;
1122
st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count;
1125
printf("FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->total_streams]->time_scale);
1130
st->codec.frame_rate_base = 1;
1131
st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1138
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1141
MOVStreamContext *sc;
1143
print_atom("trak", atom);
1145
st = av_new_stream(c->fc, c->fc->nb_streams);
1147
sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1153
sc->sample_to_chunk_index = -1;
1155
st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1156
st->start_time = 0; /* XXX: check */
1157
st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1158
c->streams[c->fc->nb_streams-1] = sc;
1160
return mov_read_default(c, pb, atom);
1163
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1167
print_atom("tkhd", atom);
1169
st = c->fc->streams[c->fc->nb_streams-1];
1171
get_byte(pb); /* version */
1173
get_byte(pb); get_byte(pb);
1174
get_byte(pb); /* flags */
1176
MOV_TRACK_ENABLED 0x0001
1177
MOV_TRACK_IN_MOVIE 0x0002
1178
MOV_TRACK_IN_PREVIEW 0x0004
1179
MOV_TRACK_IN_POSTER 0x0008
1182
get_be32(pb); /* creation time */
1183
get_be32(pb); /* modification time */
1184
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1185
get_be32(pb); /* reserved */
1186
st->start_time = 0; /* check */
1187
st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1188
get_be32(pb); /* reserved */
1189
get_be32(pb); /* reserved */
1191
get_be16(pb); /* layer */
1192
get_be16(pb); /* alternate group */
1193
get_be16(pb); /* volume */
1194
get_be16(pb); /* reserved */
1196
url_fskip(pb, 36); /* display matrix */
1198
/* those are fixed-point */
1199
st->codec.width = get_be32(pb) >> 16; /* track width */
1200
st->codec.height = get_be32(pb) >> 16; /* track height */
1205
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1206
/* like the files created with Adobe Premiere 5.0, for samples see */
1207
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1208
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1213
print_atom("wide", atom);
1217
return 0; /* continue */
1218
if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1219
url_fskip(pb, atom.size - 4);
1222
atom.type = get_le32(pb);
1225
if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1226
url_fskip(pb, atom.size);
1229
err = mov_read_mdat(c, pb, atom);
1238
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1243
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1247
uint8_t *moov_data; /* uncompressed data */
1248
long cmov_len, moov_len;
1251
print_atom("cmov", atom);
1253
get_be32(pb); /* dcom atom */
1254
if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1256
if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1257
dprintf("unknown compression for cmov atom !");
1260
get_be32(pb); /* cmvd atom */
1261
if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1263
moov_len = get_be32(pb); /* uncompressed size */
1264
cmov_len = atom.size - 6 * 4;
1266
cmov_data = (uint8_t *) av_malloc(cmov_len);
1269
moov_data = (uint8_t *) av_malloc(moov_len);
1274
get_buffer(pb, cmov_data, cmov_len);
1275
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1277
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1279
ctx.buf_end = ctx.buffer + moov_len;
1280
atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1282
atom.size = moov_len;
1284
{ int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1286
ret = mov_read_default(c, &ctx, atom);
1294
static const MOVParseTableEntry mov_default_parse_table[] = {
1296
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1297
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1298
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1299
{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1300
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1301
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1302
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1303
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1304
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1305
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1306
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1307
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1308
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1309
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1310
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1311
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1312
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1313
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1314
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1315
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1316
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1317
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1318
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1319
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1320
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1321
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1322
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1323
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1324
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1325
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1326
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1327
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1328
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1329
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1330
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1331
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1332
{ MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* sync sample */
1333
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1334
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1335
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1336
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1337
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1338
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1339
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1340
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1341
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1342
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1343
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1345
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1347
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1348
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1349
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1350
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1351
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1352
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1353
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1354
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1355
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1356
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1357
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1358
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1359
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1360
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1361
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1362
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1363
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1365
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1367
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1369
{ 0L, mov_read_leaf }
1372
static void mov_free_stream_context(MOVStreamContext *sc)
1375
av_free(sc->chunk_offsets);
1376
av_free(sc->sample_to_chunk);
1377
av_free(sc->sample_sizes);
1378
av_free(sc->header_data);
1383
static inline uint32_t mov_to_tag(uint8_t *buf)
1385
return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1388
static inline uint32_t to_be32(uint8_t *buf)
1390
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1393
/* XXX: is it sufficient ? */
1394
static int mov_probe(AVProbeData *p)
1396
unsigned int offset;
1399
/* check file header */
1400
if (p->buf_size <= 12)
1404
/* ignore invalid offset */
1405
if ((offset + 8) > (unsigned int)p->buf_size)
1407
tag = mov_to_tag(p->buf + offset + 4);
1409
case MKTAG( 'm', 'o', 'o', 'v' ):
1410
case MKTAG( 'w', 'i', 'd', 'e' ):
1411
case MKTAG( 'f', 'r', 'e', 'e' ):
1412
case MKTAG( 'm', 'd', 'a', 't' ):
1413
case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1414
case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1415
return AVPROBE_SCORE_MAX;
1416
case MKTAG( 'f', 't', 'y', 'p' ):
1417
case MKTAG( 's', 'k', 'i', 'p' ):
1418
offset = to_be32(p->buf+offset) + offset;
1421
/* unrecognized tag */
1428
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1430
MOVContext *mov = (MOVContext *) s->priv_data;
1431
ByteIOContext *pb = &s->pb;
1433
MOV_atom_t atom = { 0, 0, 0 };
1436
mov->parse_table = mov_default_parse_table;
1438
/* XXX: I think we should auto detect */
1439
if(s->iformat->name[1] == 'p')
1442
if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1443
atom.size = url_filesize(url_fileno(pb));
1445
atom.size = 0x7FFFFFFFFFFFFFFFLL;
1448
printf("filesz=%Ld\n", atom.size);
1451
/* check MOV header */
1452
err = mov_read_default(mov, pb, atom);
1453
if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1454
fprintf(stderr, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1455
err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1459
printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1461
/* some cleanup : make sure we are on the mdat atom */
1462
if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1463
url_fseek(pb, mov->mdat_offset, SEEK_SET);
1465
mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1468
printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1472
printf("streams= %d\n", s->nb_streams);
1474
mov->total_streams = nb = s->nb_streams;
1477
for(i=0; i<s->nb_streams;) {
1478
if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1479
av_free(s->streams[i]);
1480
for(j=i+1; j<s->nb_streams; j++)
1481
s->streams[j-1] = s->streams[j];
1486
for(i=0; i<s->nb_streams;i++) {
1487
MOVStreamContext *sc;
1488
sc = (MOVStreamContext *)s->streams[i]->priv_data;
1490
sc->is_ff_stream = 1;
1494
printf("real streams= %d\n", s->nb_streams);
1499
/* Yes, this is ugly... I didn't write the specs of QT :p */
1500
/* XXX:remove useless commented code sometime */
1501
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1503
MOVContext *mov = (MOVContext *) s->priv_data;
1504
MOVStreamContext *sc;
1505
int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1510
#ifdef MOV_SPLIT_CHUNKS
1516
idx = sc->sample_to_chunk_index;
1518
if (idx < 0) return 0;
1519
size = sc->sample_sizes[sc->current_sample];
1521
sc->current_sample++;
1522
sc->left_in_chunk--;
1524
if (sc->left_in_chunk <= 0)
1526
offset = mov->next_chunk_offset;
1527
/* extract the sample */
1535
for(i=0; i<mov->total_streams; i++) {
1536
MOVStreamContext *msc = mov->streams[i];
1537
//printf("MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1538
if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1539
&& (msc->chunk_offsets[msc->next_chunk] < offset)) {
1541
offset = msc->chunk_offsets[msc->next_chunk];
1542
//printf("SELETED %Ld i:%d\n", offset, i);
1545
if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1550
if(mov->next_chunk_offset < offset) { /* some meta data */
1551
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1552
mov->next_chunk_offset = offset;
1555
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1556
if(!sc->is_ff_stream) {
1557
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1558
mov->next_chunk_offset = offset;
1559
offset = 0x0FFFFFFFFFFFFFFFLL;
1563
/* now get the chunk size... */
1565
for(i=0; i<mov->total_streams; i++) {
1566
MOVStreamContext *msc = mov->streams[i];
1567
if ((msc->next_chunk < msc->chunk_count)
1568
&& ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1569
size = msc->chunk_offsets[msc->next_chunk] - offset;
1572
#ifdef MOV_MINOLTA_FIX
1573
//Make sure that size is according to sample_size (Needed by .mov files
1574
//created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1575
//Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1576
//but I have no such movies
1577
if (sc->sample_size > 0) {
1579
for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1580
if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1582
foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1585
/*printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
1588
if( (foundsize>0) && (foundsize<size) )
1591
/*printf("this size should actually be %d\n",foundsize);*/
1596
#endif //MOV_MINOLTA_FIX
1598
#ifdef MOV_SPLIT_CHUNKS
1599
/* split chunks into samples */
1600
if (sc->sample_size == 0) {
1601
int idx = sc->sample_to_chunk_index;
1602
if ((idx + 1 < sc->sample_to_chunk_sz)
1603
&& (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1605
sc->sample_to_chunk_index = idx;
1606
if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1608
/* we'll have to get those samples before next chunk */
1609
sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1610
size = sc->sample_sizes[sc->current_sample];
1613
sc->current_sample++;
1618
//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1619
if(size == 0x0FFFFFFF)
1620
size = mov->mdat_size + mov->mdat_offset - offset;
1625
url_fseek(&s->pb, offset, SEEK_SET);
1627
//printf("READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1628
if (sc->header_len > 0) {
1629
av_new_packet(pkt, size + sc->header_len);
1630
memcpy(pkt->data, sc->header_data, sc->header_len);
1631
get_buffer(&s->pb, pkt->data + sc->header_len, size);
1633
av_freep(&sc->header_data);
1636
av_new_packet(pkt, size);
1637
get_buffer(&s->pb, pkt->data, pkt->size);
1639
pkt->stream_index = sc->ffindex;
1643
printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1645
printf("%02x ", pkt->data[i]);
1647
printf("%c ", (pkt->data[i]) & 0x7F);
1652
mov->next_chunk_offset = offset + size;
1657
static int mov_read_close(AVFormatContext *s)
1660
MOVContext *mov = (MOVContext *) s->priv_data;
1661
for(i=0; i<mov->total_streams; i++)
1662
mov_free_stream_context(mov->streams[i]);
1663
for(i=0; i<s->nb_streams; i++)
1664
av_freep(&s->streams[i]);
1665
/* free color tabs */
1666
for(i=0; i<mov->ctab_size; i++)
1667
av_freep(&mov->ctab[i]);
1668
av_freep(&mov->ctab);
1672
static AVInputFormat mov_iformat = {
1674
"QuickTime/MPEG4 format",
1684
av_register_input_format(&mov_iformat);
added
removed
ffmpeg/libavformat/mov.c
