cosmetics: make all references to AC-3 capitalized and hyphenated
[libav.git] / libavformat / mov.c
CommitLineData
6cea494e 1/*
7fbde343 2 * MOV demuxer
19720f15 3 * Copyright (c) 2001 Fabrice Bellard.
6cea494e 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
6cea494e 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
6cea494e 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
6cea494e 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6cea494e 20 */
d957696f
MN
21
22#include <limits.h>
115329f1 23
bfc2a19d 24//#define DEBUG
4e5ef14f 25
6cea494e 26#include "avformat.h"
9d9f4119 27#include "riff.h"
e40ee6a2 28#include "isom.h"
b60c0454 29#include "dv.h"
245976da
DB
30#include "libavcodec/mpeg4audio.h"
31#include "libavcodec/mpegaudiodata.h"
6cea494e 32
0147f198
FR
33#ifdef CONFIG_ZLIB
34#include <zlib.h>
35#endif
36
6cea494e
ZK
37/*
38 * First version by Francois Revol revol@free.fr
115329f1 39 * Seek function by Gael Chardon gael.dev@4now.net
5ca1d879 40 *
6cea494e 41 * Features and limitations:
5ca1d879 42 * - reads most of the QT files I have (at least the structure),
6cea494e 43 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
6cea494e 44 * - the code is quite ugly... maybe I won't do it recursive next time :-)
5ca1d879 45 *
6cea494e
ZK
46 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47 * when coding this :) (it's a writer anyway)
5ca1d879 48 *
6cea494e
ZK
49 * Reference documents:
50 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
51 * Apple:
baf25c9d 52 * http://developer.apple.com/documentation/QuickTime/QTFF/
15c8dbe7 53 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
6cea494e
ZK
54 * QuickTime is a trademark of Apple (AFAIK :))
55 */
56
b595afaa
MM
57#include "qtpalette.h"
58
baf25c9d 59
cd7352d5
MN
60#undef NDEBUG
61#include <assert.h>
62
6cea494e
ZK
63/* the QuickTime file format is quite convoluted...
64 * it has lots of index tables, each indexing something in another one...
65 * Here we just use what is needed to read the chunks
66 */
67
e23848a4 68typedef struct {
1c02d96f
BC
69 int first;
70 int count;
71 int id;
e23848a4 72} MOV_stsc_t;
6cea494e 73
5cd62665 74typedef struct {
5ca1d879 75 uint32_t type;
221e21b7
BC
76 char *path;
77} MOV_dref_t;
78
79typedef struct {
80 uint32_t type;
5ca1d879
ZK
81 int64_t offset;
82 int64_t size; /* total size (excluding the size and type fields) */
83} MOV_atom_t;
84
b6a17df4
ZK
85struct MOVParseTableEntry;
86
61aedb0f
BC
87typedef struct {
88 unsigned track_id;
89 uint64_t base_data_offset;
90 uint64_t moof_offset;
91 unsigned stsd_id;
92 unsigned duration;
93 unsigned size;
94 unsigned flags;
95} MOVFragment;
96
97typedef struct {
98 unsigned track_id;
99 unsigned stsd_id;
100 unsigned duration;
101 unsigned size;
102 unsigned flags;
103} MOVTrackExt;
104
6cea494e 105typedef struct MOVStreamContext {
221e21b7 106 ByteIOContext *pb;
6cea494e 107 int ffindex; /* the ffmpeg stream id */
1c02d96f 108 int next_chunk;
44d3fea5 109 unsigned int chunk_count;
0c1a9eda 110 int64_t *chunk_offsets;
44d3fea5 111 unsigned int stts_count;
e23848a4 112 MOV_stts_t *stts_data;
44d3fea5 113 unsigned int ctts_count;
e23848a4 114 MOV_stts_t *ctts_data;
44d3fea5
BC
115 unsigned int edit_count; /* number of 'edit' (elst atom) */
116 unsigned int sample_to_chunk_sz;
e23848a4 117 MOV_stsc_t *sample_to_chunk;
c4ac052b
MN
118 int sample_to_ctime_index;
119 int sample_to_ctime_sample;
44d3fea5
BC
120 unsigned int sample_size;
121 unsigned int sample_count;
1c02d96f 122 int *sample_sizes;
44d3fea5 123 unsigned int keyframe_count;
1c02d96f 124 int *keyframes;
5cd62665 125 int time_scale;
cd7352d5 126 int time_rate;
1c02d96f 127 int current_sample;
e14f79ed
BC
128 unsigned int bytes_per_frame;
129 unsigned int samples_per_frame;
b60c0454 130 int dv_audio_container;
978677a7 131 int pseudo_stream_id; ///< -1 means demux all ids
77c75437 132 int16_t audio_cid; ///< stsd audio compression id
221e21b7
BC
133 unsigned drefs_count;
134 MOV_dref_t *drefs;
135 int dref_id;
6cea494e
ZK
136} MOVStreamContext;
137
138typedef struct MOVContext {
6cea494e 139 AVFormatContext *fc;
5cd62665 140 int time_scale;
7e815047 141 int64_t duration; /* duration of the longest track */
6cea494e
ZK
142 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
143 int found_mdat; /* we suppose we have enough data to read the file */
b595afaa 144 AVPaletteControl palette_control;
b60c0454
BC
145 DVDemuxContext *dv_demux;
146 AVFormatContext *dv_fctx;
152e9a43 147 int isom; /* 1 if file is ISO Media (mp4/3gp) */
61aedb0f
BC
148 MOVFragment fragment; ///< current fragment in moof atom
149 MOVTrackExt *trex_data;
150 unsigned trex_count;
6cea494e
ZK
151} MOVContext;
152
153
6cea494e
ZK
154/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
155
156/* those functions parse an atom */
157/* return code:
e3c4740f 158 0: continue to parse next atom
d9526386 159 <0: error occurred, exit
e3c4740f 160*/
6cea494e
ZK
161/* links atom IDs to parse functions */
162typedef struct MOVParseTableEntry {
0c1a9eda 163 uint32_t type;
03dc32f6 164 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
6cea494e
ZK
165} MOVParseTableEntry;
166
73d07c27
BC
167static const MOVParseTableEntry mov_default_parse_table[];
168
5ca1d879 169static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 170{
b6a17df4 171 int64_t total_size = 0;
5ca1d879 172 MOV_atom_t a;
6cea494e
ZK
173 int i;
174 int err = 0;
5ca1d879 175
5ca1d879 176 a.offset = atom.offset;
6cea494e 177
9ed83b0a 178 if (atom.size < 0)
fa22ca22 179 atom.size = INT64_MAX;
5ca1d879 180 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
bb270c08 181 a.size = atom.size;
bcfe2ba0 182 a.type=0;
5ca1d879 183 if(atom.size >= 8) {
bb270c08 184 a.size = get_be32(pb);
5ca1d879 185 a.type = get_le32(pb);
6cea494e 186 }
bb270c08 187 total_size += 8;
5ca1d879 188 a.offset += 8;
29c90869
BC
189 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
190 a.type, (char*)&a.type, a.size, atom.size, total_size);
5ca1d879 191 if (a.size == 1) { /* 64 bit extended size */
bb270c08 192 a.size = get_be64(pb) - 8;
5ca1d879
ZK
193 a.offset += 8;
194 total_size += 8;
6cea494e 195 }
bb270c08
DB
196 if (a.size == 0) {
197 a.size = atom.size - total_size;
198 if (a.size <= 8)
5cd62665 199 break;
bb270c08 200 }
bb270c08 201 a.size -= 8;
8622613d 202 if(a.size < 0)
568e18b1 203 break;
3d2308b0 204 a.size = FFMIN(a.size, atom.size - total_size);
115329f1 205
bcfe2ba0 206 for (i = 0; mov_default_parse_table[i].type != 0
73d07c27 207 && mov_default_parse_table[i].type != a.type; i++)
11979c46
BC
208 /* empty */;
209
73d07c27 210 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
5ca1d879 211 url_fskip(pb, a.size);
bb270c08 212 } else {
5c72cad8
BC
213 offset_t start_pos = url_ftell(pb);
214 int64_t left;
03dc32f6 215 err = mov_default_parse_table[i].parse(c, pb, a);
db3ee6cc 216 if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
687f35f3 217 break;
5c72cad8
BC
218 left = a.size - url_ftell(pb) + start_pos;
219 if (left > 0) /* skip garbage at atom end */
220 url_fskip(pb, left);
bb270c08 221 }
6cea494e 222
bb270c08 223 a.offset += a.size;
5ca1d879 224 total_size += a.size;
6cea494e
ZK
225 }
226
9ce84dd8 227 if (!err && total_size < atom.size && atom.size < 0x7ffff)
5ca1d879 228 url_fskip(pb, atom.size - total_size);
5cd62665 229
6cea494e
ZK
230 return err;
231}
232
221e21b7
BC
233static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
234{
235 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
236 MOVStreamContext *sc = st->priv_data;
237 int entries, i, j;
238
239 get_be32(pb); // version + flags
240 entries = get_be32(pb);
241 if (entries >= UINT_MAX / sizeof(*sc->drefs))
242 return -1;
243 sc->drefs_count = entries;
244 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
245
246 for (i = 0; i < sc->drefs_count; i++) {
247 MOV_dref_t *dref = &sc->drefs[i];
248 uint32_t size = get_be32(pb);
249 offset_t next = url_ftell(pb) + size - 4;
250
251 dref->type = get_le32(pb);
252 get_be32(pb); // version + flags
253 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
254
255 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
256 /* macintosh alias record */
257 uint16_t volume_len, len;
258 char volume[28];
259 int16_t type;
260
261 url_fskip(pb, 10);
262
263 volume_len = get_byte(pb);
264 volume_len = FFMIN(volume_len, 27);
265 get_buffer(pb, volume, 27);
266 volume[volume_len] = 0;
267 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
268
269 url_fskip(pb, 112);
270
271 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
272 type = get_be16(pb);
273 len = get_be16(pb);
274 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
275 if (len&1)
276 len += 1;
277 if (type == 2) { // absolute path
dbb37657 278 av_free(dref->path);
221e21b7 279 dref->path = av_mallocz(len+1);
2f4568e5
BC
280 if (!dref->path)
281 return AVERROR(ENOMEM);
221e21b7 282 get_buffer(pb, dref->path, len);
dbb7cbf2 283 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
221e21b7
BC
284 len -= volume_len;
285 memmove(dref->path, dref->path+volume_len, len);
286 dref->path[len] = 0;
287 }
288 for (j = 0; j < len; j++)
289 if (dref->path[j] == ':')
290 dref->path[j] = '/';
291 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
292 } else
293 url_fskip(pb, len);
294 }
295 }
296 url_fseek(pb, next, SEEK_SET);
297 }
298 return 0;
299}
300
5ca1d879 301static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 302{
5ca1d879 303 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
0c1a9eda 304 uint32_t type;
0c1a9eda 305 uint32_t ctype;
b6a17df4 306
6cea494e 307 get_byte(pb); /* version */
23f08617 308 get_be24(pb); /* flags */
6cea494e
ZK
309
310 /* component type */
311 ctype = get_le32(pb);
312 type = get_le32(pb); /* component subtype */
313
29c90869
BC
314 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
315 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
316 dprintf(c->fc, "stype= %c%c%c%c\n",
317 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
152e9a43
BC
318 if(!ctype)
319 c->isom = 1;
37ffe34b 320 if (type == MKTAG('v','i','d','e'))
73920f07 321 st->codec->codec_type = CODEC_TYPE_VIDEO;
1c126b4f 322 else if(type == MKTAG('s','o','u','n'))
73920f07 323 st->codec->codec_type = CODEC_TYPE_AUDIO;
1c126b4f 324 else if(type == MKTAG('m','1','a',' '))
95a07973 325 st->codec->codec_id = CODEC_ID_MP2;
1c126b4f 326 else if(type == MKTAG('s','u','b','p')) {
8cb97693 327 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
8cb97693 328 }
6cea494e
ZK
329 get_be32(pb); /* component manufacture */
330 get_be32(pb); /* component flags */
331 get_be32(pb); /* component flags mask */
332
5ca1d879 333 if(atom.size <= 24)
6cea494e 334 return 0; /* nothing left to read */
5cd62665 335
3c13647a 336 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
6cea494e
ZK
337 return 0;
338}
339
9e40addd 340static int mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 341{
5cd62665 342 int len = 0;
5ca1d879
ZK
343 int count = 4;
344 while (count--) {
5cd62665 345 int c = get_byte(pb);
bb270c08
DB
346 len = (len << 7) | (c & 0x7f);
347 if (!(c & 0x80))
348 break;
0e7eed09
FB
349 }
350 return len;
351}
352
9e40addd 353static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
0e7eed09
FB
354{
355 int len;
356 *tag = get_byte(pb);
9e40addd 357 len = mp4_read_descr_len(pb);
318c5e05 358 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
359 return len;
360}
361
0b07ac42
BC
362#define MP4ESDescrTag 0x03
363#define MP4DecConfigDescrTag 0x04
364#define MP4DecSpecificDescrTag 0x05
365
1dec3994
BC
366static const AVCodecTag mp4_audio_types[] = {
367 { CODEC_ID_MP3ON4, 29 }, /* old mp3on4 draft */
368 { CODEC_ID_MP3ON4, 32 }, /* layer 1 */
369 { CODEC_ID_MP3ON4, 33 }, /* layer 2 */
370 { CODEC_ID_MP3ON4, 34 }, /* layer 3 */
371 { CODEC_ID_NONE, 0 },
372};
373
5ca1d879 374static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
5cd62665 375{
5cd62665 376 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
5cd62665 377 int tag, len;
b6a17df4 378
5cd62665 379 get_be32(pb); /* version + flags */
9e40addd 380 len = mp4_read_descr(c, pb, &tag);
5cd62665 381 if (tag == MP4ESDescrTag) {
bb270c08
DB
382 get_be16(pb); /* ID */
383 get_byte(pb); /* priority */
5cd62665 384 } else
bb270c08 385 get_be16(pb); /* ID */
5cd62665 386
9e40addd 387 len = mp4_read_descr(c, pb, &tag);
5cd62665 388 if (tag == MP4DecConfigDescrTag) {
0b07ac42
BC
389 int object_type_id = get_byte(pb);
390 get_byte(pb); /* stream type */
391 get_be24(pb); /* buffer size db */
392 get_be32(pb); /* max bitrate */
393 get_be32(pb); /* avg bitrate */
394
395 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
396 dprintf(c->fc, "esds object type id %d\n", object_type_id);
9e40addd 397 len = mp4_read_descr(c, pb, &tag);
bb270c08 398 if (tag == MP4DecSpecificDescrTag) {
318c5e05 399 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
852859ff
BC
400 if((uint64_t)len > (1<<30))
401 return -1;
9a630c25 402 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
b014dd76
BC
403 if (!st->codec->extradata)
404 return AVERROR(ENOMEM);
17871a02
BC
405 get_buffer(pb, st->codec->extradata, len);
406 st->codec->extradata_size = len;
1dec3994
BC
407 if (st->codec->codec_id == CODEC_ID_AAC) {
408 MPEG4AudioConfig cfg;
409 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
410 st->codec->extradata_size);
391872e4 411 if (cfg.chan_config > 7)
45a97d30
BC
412 return -1;
413 st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
414 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
415 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
416 else
417 st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
418 dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
419 "sample rate %d ext sample rate %d\n", st->codec->channels,
420 cfg.object_type, cfg.ext_object_type,
421 cfg.sample_rate, cfg.ext_sample_rate);
1dec3994
BC
422 if (!(st->codec->codec_id = codec_get_id(mp4_audio_types,
423 cfg.object_type)))
424 st->codec->codec_id = CODEC_ID_AAC;
17871a02 425 }
bb270c08 426 }
5cd62665 427 }
5cd62665
ZK
428 return 0;
429}
430
5ca1d879
ZK
431/* this atom contains actual media data */
432static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 433{
5ca1d879
ZK
434 if(atom.size == 0) /* wrong one (MP4) */
435 return 0;
436 c->found_mdat=1;
5ca1d879
ZK
437 return 0; /* now go for moov */
438}
439
4ea28253
BC
440static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
441{
442 uint32_t type = get_le32(pb);
443
152e9a43
BC
444 if (type != MKTAG('q','t',' ',' '))
445 c->isom = 1;
a512446e 446 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
4ea28253
BC
447 get_be32(pb); /* minor version */
448 url_fskip(pb, atom.size - 8);
449 return 0;
450}
451
5ca1d879
ZK
452/* this atom should contain all header atoms */
453static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
454{
9cf0419b
PI
455 if (mov_read_default(c, pb, atom) < 0)
456 return -1;
5ca1d879
ZK
457 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
458 /* so we don't parse the whole file if over a network */
459 c->found_moov=1;
5ca1d879
ZK
460 return 0; /* now go for mdat */
461}
462
61aedb0f
BC
463static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
464{
465 c->fragment.moof_offset = url_ftell(pb) - 8;
466 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
467 return mov_read_default(c, pb, atom);
468}
5ca1d879
ZK
469
470static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
471{
f444b977 472 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 473 MOVStreamContext *sc = st->priv_data;
f444b977 474 int version = get_byte(pb);
b9a87c4d 475 int lang;
5ca1d879 476
b9a87c4d 477 if (version > 1)
7e627332 478 return -1; /* unsupported */
5ca1d879 479
23f08617 480 get_be24(pb); /* flags */
f444b977
BC
481 if (version == 1) {
482 get_be64(pb);
483 get_be64(pb);
484 } else {
485 get_be32(pb); /* creation time */
486 get_be32(pb); /* modification time */
487 }
5ca1d879 488
f444b977
BC
489 sc->time_scale = get_be32(pb);
490 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879 491
b9a87c4d 492 lang = get_be16(pb); /* language */
f444b977 493 ff_mov_lang_to_iso639(lang, st->language);
5ca1d879
ZK
494 get_be16(pb); /* quality */
495
496 return 0;
497}
498
499static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
500{
1175561e 501 int version = get_byte(pb); /* version */
23f08617 502 get_be24(pb); /* flags */
5ca1d879 503
1175561e
BC
504 if (version == 1) {
505 get_be64(pb);
506 get_be64(pb);
507 } else {
508 get_be32(pb); /* creation time */
509 get_be32(pb); /* modification time */
510 }
5ca1d879 511 c->time_scale = get_be32(pb); /* time scale */
f8c18cd7
BC
512
513 dprintf(c->fc, "time scale = %i\n", c->time_scale);
514
1175561e 515 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879
ZK
516 get_be32(pb); /* preferred scale */
517
518 get_be16(pb); /* preferred volume */
519
520 url_fskip(pb, 10); /* reserved */
521
522 url_fskip(pb, 36); /* display matrix */
523
524 get_be32(pb); /* preview time */
525 get_be32(pb); /* preview duration */
526 get_be32(pb); /* poster time */
527 get_be32(pb); /* selection time */
528 get_be32(pb); /* selection duration */
529 get_be32(pb); /* current time */
530 get_be32(pb); /* next track ID */
531
532 return 0;
533}
534
9ed83b0a
ZK
535static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
536{
537 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
538
568e18b1
MN
539 if((uint64_t)atom.size > (1<<30))
540 return -1;
115329f1 541
9ed83b0a
ZK
542 // currently SVQ3 decoder expect full STSD header - so let's fake it
543 // this should be fixed and just SMI header should be passed
01f4895c 544 av_free(st->codec->extradata);
b014dd76
BC
545 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
546 if (!st->codec->extradata)
547 return AVERROR(ENOMEM);
17871a02
BC
548 st->codec->extradata_size = 0x5a + atom.size;
549 memcpy(st->codec->extradata, "SVQ3", 4); // fake
550 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
551 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
552 return 0;
553}
5ca1d879 554
de23f234
BC
555static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
556{
557 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
558 int little_endian = get_be16(pb);
559
560 if (little_endian) {
561 switch (st->codec->codec_id) {
562 case CODEC_ID_PCM_S24BE:
563 st->codec->codec_id = CODEC_ID_PCM_S24LE;
564 break;
565 case CODEC_ID_PCM_S32BE:
566 st->codec->codec_id = CODEC_ID_PCM_S32LE;
567 break;
568 default:
569 break;
570 }
571 }
572 return 0;
573}
574
014a5102
BC
575/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
576static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
de23f234
BC
577{
578 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
68bc33fa
BC
579 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
580 uint8_t *buf;
581 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 582 return -1;
68bc33fa
BC
583 buf= av_realloc(st->codec->extradata, size);
584 if(!buf)
585 return -1;
586 st->codec->extradata= buf;
587 buf+= st->codec->extradata_size;
588 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
589 AV_WB32( buf , atom.size + 8);
590 AV_WL32( buf + 4, atom.type);
591 get_buffer(pb, buf + 8, atom.size);
de23f234
BC
592 return 0;
593}
594
d9b1c197
RT
595static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
596{
597 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
598
599 if((uint64_t)atom.size > (1<<30))
600 return -1;
115329f1 601
3840147e
MN
602 if (st->codec->codec_id == CODEC_ID_QDM2) {
603 // pass all frma atom to codec, needed at least for QDM2
604 av_free(st->codec->extradata);
b014dd76
BC
605 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
606 if (!st->codec->extradata)
607 return AVERROR(ENOMEM);
3840147e 608 st->codec->extradata_size = atom.size;
b014dd76 609 get_buffer(pb, st->codec->extradata, atom.size);
3840147e 610 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
611 if (mov_read_default(c, pb, atom) < 0)
612 return -1;
5c72cad8 613 } else
bb270c08 614 url_fskip(pb, atom.size);
d9b1c197
RT
615 return 0;
616}
617
bde24601
BC
618/**
619 * This function reads atom content and puts data in extradata without tag
620 * nor size unlike mov_read_extradata.
621 */
622static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
169eb021
MM
623{
624 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
625
568e18b1
MN
626 if((uint64_t)atom.size > (1<<30))
627 return -1;
628
01f4895c 629 av_free(st->codec->extradata);
b014dd76
BC
630 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
631 if (!st->codec->extradata)
632 return AVERROR(ENOMEM);
01f4895c 633 st->codec->extradata_size = atom.size;
b014dd76 634 get_buffer(pb, st->codec->extradata, atom.size);
169eb021
MM
635 return 0;
636}
637
5ca1d879
ZK
638static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
639{
640 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 641 MOVStreamContext *sc = st->priv_data;
568e18b1 642 unsigned int i, entries;
5ca1d879 643
5ca1d879 644 get_byte(pb); /* version */
23f08617 645 get_be24(pb); /* flags */
5ca1d879
ZK
646
647 entries = get_be32(pb);
115329f1 648
568e18b1
MN
649 if(entries >= UINT_MAX/sizeof(int64_t))
650 return -1;
115329f1 651
5ca1d879 652 sc->chunk_count = entries;
9a630c25 653 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879
ZK
654 if (!sc->chunk_offsets)
655 return -1;
37ffe34b
BC
656 if (atom.type == MKTAG('s','t','c','o'))
657 for(i=0; i<entries; i++)
5ca1d879 658 sc->chunk_offsets[i] = get_be32(pb);
37ffe34b
BC
659 else if (atom.type == MKTAG('c','o','6','4'))
660 for(i=0; i<entries; i++)
5ca1d879 661 sc->chunk_offsets[i] = get_be64(pb);
37ffe34b 662 else
5ca1d879 663 return -1;
115329f1 664
5ca1d879
ZK
665 return 0;
666}
667
668static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
669{
670 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 671 MOVStreamContext *sc = st->priv_data;
baf9fb32 672 int j, entries, pseudo_stream_id;
b595afaa 673
6cea494e 674 get_byte(pb); /* version */
23f08617 675 get_be24(pb); /* flags */
6cea494e 676
6cea494e
ZK
677 entries = get_be32(pb);
678
117a9190
BC
679 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
680 //Parsing Sample description table
b6a17df4 681 enum CodecID id;
221e21b7 682 int dref_id;
de23f234 683 MOV_atom_t a = { 0, 0, 0 };
3840147e 684 offset_t start_pos = url_ftell(pb);
bb270c08 685 int size = get_be32(pb); /* size */
baf9fb32 686 uint32_t format = get_le32(pb); /* data format */
5cd62665 687
6cea494e
ZK
688 get_be32(pb); /* reserved */
689 get_be16(pb); /* reserved */
221e21b7 690 dref_id = get_be16(pb);
0e7eed09 691
744a9c75 692 if (st->codec->codec_tag &&
978677a7 693 st->codec->codec_tag != format &&
744a9c75 694 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 695 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 696 ){
7ce68923
DB
697 /* Multiple fourcc, we skip JPEG. This is not correct, we should
698 * export it as a separate AVStream but this needs a few changes
699 * in the MOV demuxer, patch welcome. */
285a3da9 700 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
e7cc4b52
BC
701 url_fskip(pb, size - (url_ftell(pb) - start_pos));
702 continue;
703 }
978677a7 704 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 705 sc->dref_id= dref_id;
e7cc4b52 706
bb270c08 707 st->codec->codec_tag = format;
1e5f5e3b 708 id = codec_get_id(codec_movaudio_tags, format);
1c126b4f 709 if (id<=0 && (format&0xFFFF) == 'm'+('s'<<8))
bca7db35
MN
710 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
711
48855b26 712 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
99487f42 713 st->codec->codec_type = CODEC_TYPE_AUDIO;
48855b26 714 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 715 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1e5f5e3b 716 id = codec_get_id(codec_movvideo_tags, format);
99487f42 717 if (id <= 0)
de23f234 718 id = codec_get_id(codec_bmp_tags, format);
99487f42
BC
719 if (id > 0)
720 st->codec->codec_type = CODEC_TYPE_VIDEO;
1e3c9307
MN
721 else if(st->codec->codec_type == CODEC_TYPE_DATA){
722 id = codec_get_id(ff_codec_movsubtitle_tags, format);
723 if(id > 0)
724 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
725 }
99487f42
BC
726 }
727
29c90869
BC
728 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
729 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
730 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 731
99487f42 732 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
baf9fb32
BC
733 uint8_t codec_name[32];
734 unsigned int color_depth;
735 int color_greyscale;
baf9fb32 736
01f4895c 737 st->codec->codec_id = id;
6cea494e
ZK
738 get_be16(pb); /* version */
739 get_be16(pb); /* revision level */
740 get_be32(pb); /* vendor */
741 get_be32(pb); /* temporal quality */
94472c1d 742 get_be32(pb); /* spatial quality */
3cb4ee51
BC
743
744 st->codec->width = get_be16(pb); /* width */
745 st->codec->height = get_be16(pb); /* height */
746
6cea494e
ZK
747 get_be32(pb); /* horiz resolution */
748 get_be32(pb); /* vert resolution */
749 get_be32(pb); /* data size, always 0 */
43612ffe 750 get_be16(pb); /* frames per samples */
f8c18cd7 751
eb034aca 752 get_buffer(pb, codec_name, 32); /* codec name, pascal string */
576f1445
BC
753 if (codec_name[0] <= 31) {
754 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
755 st->codec->codec_name[codec_name[0]] = 0;
756 }
5cd62665 757
bb270c08 758 st->codec->bits_per_sample = get_be16(pb); /* depth */
01f4895c 759 st->codec->color_table_id = get_be16(pb); /* colortable id */
0de2157f
BC
760 dprintf(c->fc, "depth %d, ctab id %d\n",
761 st->codec->bits_per_sample, st->codec->color_table_id);
b595afaa 762 /* figure out the palette situation */
01f4895c
MN
763 color_depth = st->codec->bits_per_sample & 0x1F;
764 color_greyscale = st->codec->bits_per_sample & 0x20;
b595afaa
MM
765
766 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 767 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 768 (color_depth == 8)) {
47e1d7ef
BC
769 /* for palette traversal */
770 unsigned int color_start, color_count, color_end;
771 unsigned char r, g, b;
772
b595afaa 773 if (color_greyscale) {
47e1d7ef 774 int color_index, color_dec;
b595afaa 775 /* compute the greyscale palette */
0de2157f 776 st->codec->bits_per_sample = color_depth;
b595afaa
MM
777 color_count = 1 << color_depth;
778 color_index = 255;
779 color_dec = 256 / (color_count - 1);
780 for (j = 0; j < color_count; j++) {
781 r = g = b = color_index;
782 c->palette_control.palette[j] =
783 (r << 16) | (g << 8) | (b);
784 color_index -= color_dec;
785 if (color_index < 0)
786 color_index = 0;
787 }
71f36235 788 } else if (st->codec->color_table_id) {
47e1d7ef 789 const uint8_t *color_table;
b595afaa
MM
790 /* if flag bit 3 is set, use the default palette */
791 color_count = 1 << color_depth;
792 if (color_depth == 2)
a90466f7 793 color_table = ff_qt_default_palette_4;
b595afaa 794 else if (color_depth == 4)
a90466f7 795 color_table = ff_qt_default_palette_16;
b595afaa 796 else
a90466f7 797 color_table = ff_qt_default_palette_256;
b595afaa
MM
798
799 for (j = 0; j < color_count; j++) {
800 r = color_table[j * 4 + 0];
801 g = color_table[j * 4 + 1];
802 b = color_table[j * 4 + 2];
803 c->palette_control.palette[j] =
804 (r << 16) | (g << 8) | (b);
805 }
b595afaa 806 } else {
b595afaa
MM
807 /* load the palette from the file */
808 color_start = get_be32(pb);
809 color_count = get_be16(pb);
810 color_end = get_be16(pb);
8b35bd80
MM
811 if ((color_start <= 255) &&
812 (color_end <= 255)) {
9de2919c
MM
813 for (j = color_start; j <= color_end; j++) {
814 /* each R, G, or B component is 16 bits;
815 * only use the top 8 bits; skip alpha bytes
816 * up front */
817 get_byte(pb);
818 get_byte(pb);
819 r = get_byte(pb);
820 get_byte(pb);
821 g = get_byte(pb);
822 get_byte(pb);
823 b = get_byte(pb);
824 get_byte(pb);
825 c->palette_control.palette[j] =
826 (r << 16) | (g << 8) | (b);
8b35bd80 827 }
b595afaa
MM
828 }
829 }
01f4895c
MN
830 st->codec->palctrl = &c->palette_control;
831 st->codec->palctrl->palette_changed = 1;
b595afaa 832 } else
01f4895c 833 st->codec->palctrl = NULL;
de23f234 834 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
aaef2bb3 835 int bits_per_sample, flags;
de23f234 836 uint16_t version = get_be16(pb);
b595afaa 837
99487f42 838 st->codec->codec_id = id;
de23f234
BC
839 get_be16(pb); /* revision level */
840 get_be32(pb); /* vendor */
6d6d7970 841
de23f234 842 st->codec->channels = get_be16(pb); /* channel count */
318c5e05 843 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
de23f234 844 st->codec->bits_per_sample = get_be16(pb); /* sample size */
de23f234 845
77c75437 846 sc->audio_cid = get_be16(pb);
de23f234
BC
847 get_be16(pb); /* packet size = 0 */
848
849 st->codec->sample_rate = ((get_be32(pb) >> 16));
850
5ef3ad59
BC
851 //Read QT version 1 fields. In version 0 these do not exist.
852 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
853 if(!c->isom) {
854 if(version==1) {
855 sc->samples_per_frame = get_be32(pb);
856 get_be32(pb); /* bytes per packet */
857 sc->bytes_per_frame = get_be32(pb);
858 get_be32(pb); /* bytes per sample */
859 } else if(version==2) {
860 get_be32(pb); /* sizeof struct only */
861 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
862 st->codec->channels = get_be32(pb);
863 get_be32(pb); /* always 0x7F000000 */
9184d53a 864 st->codec->bits_per_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
aaef2bb3 865 flags = get_be32(pb); /* lcpm format specific flag */
9184d53a
BC
866 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
867 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
aaef2bb3
BC
868 if (flags & 2) // big endian
869 st->codec->codec_id = CODEC_ID_PCM_S16BE;
5ef3ad59
BC
870 }
871 }
872
de23f234 873 switch (st->codec->codec_id) {
b72708f8
BC
874 case CODEC_ID_PCM_S8:
875 case CODEC_ID_PCM_U8:
876 if (st->codec->bits_per_sample == 16)
877 st->codec->codec_id = CODEC_ID_PCM_S16BE;
878 break;
0dd39bfe 879 case CODEC_ID_PCM_S16LE:
de23f234
BC
880 case CODEC_ID_PCM_S16BE:
881 if (st->codec->bits_per_sample == 8)
882 st->codec->codec_id = CODEC_ID_PCM_S8;
0299a87c 883 else if (st->codec->bits_per_sample == 24)
6b477e1b
BC
884 st->codec->codec_id =
885 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
886 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 887 break;
53152765
BC
888 /* set values for old format before stsd version 1 appeared */
889 case CODEC_ID_MACE3:
890 sc->samples_per_frame = 6;
891 sc->bytes_per_frame = 2*st->codec->channels;
892 break;
893 case CODEC_ID_MACE6:
894 sc->samples_per_frame = 6;
895 sc->bytes_per_frame = 1*st->codec->channels;
896 break;
897 case CODEC_ID_ADPCM_IMA_QT:
898 sc->samples_per_frame = 64;
899 sc->bytes_per_frame = 34*st->codec->channels;
900 break;
cc326d2b
BC
901 case CODEC_ID_GSM:
902 sc->samples_per_frame = 160;
903 sc->bytes_per_frame = 33;
904 break;
de23f234
BC
905 default:
906 break;
6d6d7970 907 }
14342fd5 908
9770089d
BC
909 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
910 if (bits_per_sample) {
911 st->codec->bits_per_sample = bits_per_sample;
912 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
913 }
cc8d87b7
MN
914 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
915 st->codec->codec_id= id;
de23f234
BC
916 } else {
917 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
918 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 919 }
de23f234
BC
920 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
921 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
922 if (a.size > 8) {
923 if (mov_read_default(c, pb, a) < 0)
924 return -1;
925 } else if (a.size > 0)
de23f234 926 url_fskip(pb, a.size);
6cea494e 927 }
115329f1 928
60f5c96e 929 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 930 st->codec->sample_rate= sc->time_scale;
e31bd3e3 931
d00f8e17 932 /* special codec parameters handling */
e31bd3e3 933 switch (st->codec->codec_id) {
989ac5a6 934#ifdef CONFIG_DV_DEMUXER
b60c0454
BC
935 case CODEC_ID_DVAUDIO:
936 c->dv_fctx = av_alloc_format_context();
937 c->dv_demux = dv_init_demux(c->dv_fctx);
938 if (!c->dv_demux) {
939 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
940 return -1;
941 }
942 sc->dv_audio_container = 1;
943 st->codec->codec_id = CODEC_ID_PCM_S16LE;
944 break;
989ac5a6 945#endif
b95319a2
BC
946 /* no ifdef since parameters are always those */
947 case CODEC_ID_AMR_WB:
948 st->codec->sample_rate= 16000;
949 st->codec->channels= 1; /* really needed */
950 break;
3f78a3a9 951 case CODEC_ID_QCELP:
b95319a2 952 case CODEC_ID_AMR_NB:
cfb5a2ab 953 st->codec->frame_size= sc->samples_per_frame;
b95319a2
BC
954 st->codec->sample_rate= 8000;
955 st->codec->channels= 1; /* really needed */
956 break;
a41104f8 957 case CODEC_ID_MP2:
c59f24e6 958 case CODEC_ID_MP3:
95a07973 959 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 960 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 961 break;
5610f20e 962 case CODEC_ID_GSM:
74e9b9ae
BC
963 case CODEC_ID_ADPCM_MS:
964 case CODEC_ID_ADPCM_IMA_WAV:
965 st->codec->block_align = sc->bytes_per_frame;
966 break;
be511925
BC
967 case CODEC_ID_ALAC:
968 if (st->codec->extradata_size == 36)
969 st->codec->frame_size = AV_RB32((st->codec->extradata+12));
970 break;
e31bd3e3
BC
971 default:
972 break;
973 }
5cd62665 974
6cea494e
ZK
975 return 0;
976}
977
5ca1d879 978static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 979{
5ca1d879 980 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 981 MOVStreamContext *sc = st->priv_data;
568e18b1 982 unsigned int i, entries;
b6a17df4 983
6cea494e 984 get_byte(pb); /* version */
23f08617 985 get_be24(pb); /* flags */
6cea494e
ZK
986
987 entries = get_be32(pb);
115329f1 988
e23848a4 989 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
568e18b1 990 return -1;
115329f1 991
f8c18cd7
BC
992 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
993
6cea494e 994 sc->sample_to_chunk_sz = entries;
e23848a4 995 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
b6a17df4
ZK
996 if (!sc->sample_to_chunk)
997 return -1;
6cea494e
ZK
998 for(i=0; i<entries; i++) {
999 sc->sample_to_chunk[i].first = get_be32(pb);
1000 sc->sample_to_chunk[i].count = get_be32(pb);
1001 sc->sample_to_chunk[i].id = get_be32(pb);
6cea494e
ZK
1002 }
1003 return 0;
1004}
1005
247d56f5
BB
1006static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1007{
1008 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1009 MOVStreamContext *sc = st->priv_data;
568e18b1 1010 unsigned int i, entries;
247d56f5 1011
247d56f5 1012 get_byte(pb); /* version */
23f08617 1013 get_be24(pb); /* flags */
247d56f5
BB
1014
1015 entries = get_be32(pb);
115329f1 1016
1c02d96f 1017 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1018 return -1;
115329f1 1019
247d56f5 1020 sc->keyframe_count = entries;
f8c18cd7
BC
1021
1022 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
1023
1c02d96f 1024 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5
BB
1025 if (!sc->keyframes)
1026 return -1;
1027 for(i=0; i<entries; i++) {
1028 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1029 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1030 }
1031 return 0;
1032}
1033
5ca1d879 1034static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1035{
5ca1d879 1036 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1037 MOVStreamContext *sc = st->priv_data;
b72708f8 1038 unsigned int i, entries, sample_size;
b6a17df4 1039
6cea494e 1040 get_byte(pb); /* version */
23f08617 1041 get_be24(pb); /* flags */
5cd62665 1042
b72708f8
BC
1043 sample_size = get_be32(pb);
1044 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1045 sc->sample_size = sample_size;
6cea494e 1046 entries = get_be32(pb);
1c02d96f 1047 if(entries >= UINT_MAX / sizeof(int))
568e18b1
MN
1048 return -1;
1049
6cea494e 1050 sc->sample_count = entries;
b72708f8
BC
1051 if (sample_size)
1052 return 0;
1053
f8c18cd7
BC
1054 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1055
1c02d96f 1056 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4
ZK
1057 if (!sc->sample_sizes)
1058 return -1;
eb61405a 1059 for(i=0; i<entries; i++)
6cea494e 1060 sc->sample_sizes[i] = get_be32(pb);
6cea494e
ZK
1061 return 0;
1062}
1063
5ca1d879 1064static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1065{
5ca1d879 1066 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1067 MOVStreamContext *sc = st->priv_data;
568e18b1 1068 unsigned int i, entries;
d957696f
MN
1069 int64_t duration=0;
1070 int64_t total_sample_count=0;
b6a17df4 1071
0147f198 1072 get_byte(pb); /* version */
23f08617 1073 get_be24(pb); /* flags */
0147f198 1074 entries = get_be32(pb);
e23848a4 1075 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
568e18b1 1076 return -1;
891f64b3 1077
cd7352d5 1078 sc->stts_count = entries;
e23848a4 1079 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1080 if (!sc->stts_data)
1081 return -1;
f8c18cd7 1082 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
cd7352d5
MN
1083
1084 sc->time_rate=0;
1085
0147f198 1086 for(i=0; i<entries; i++) {
cd461d48
MN
1087 int sample_duration;
1088 int sample_count;
0147f198 1089
891f64b3 1090 sample_count=get_be32(pb);
0147f198 1091 sample_duration = get_be32(pb);
cd7352d5
MN
1092 sc->stts_data[i].count= sample_count;
1093 sc->stts_data[i].duration= sample_duration;
1094
1095 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
961e0ccd 1096
318c5e05 1097 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1098
7e815047 1099 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1100 total_sample_count+=sample_count;
891f64b3 1101 }
1102
961e0ccd
MN
1103 st->nb_frames= total_sample_count;
1104 if(duration)
1105 st->duration= duration;
0147f198
FR
1106 return 0;
1107}
1108
c4ac052b
MN
1109static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1110{
70a61ed4 1111 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1112 MOVStreamContext *sc = st->priv_data;
c4ac052b
MN
1113 unsigned int i, entries;
1114
c4ac052b 1115 get_byte(pb); /* version */
23f08617 1116 get_be24(pb); /* flags */
c4ac052b 1117 entries = get_be32(pb);
e23848a4 1118 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
c4ac052b
MN
1119 return -1;
1120
70a61ed4 1121 sc->ctts_count = entries;
e23848a4 1122 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1123 if (!sc->ctts_data)
1124 return -1;
318c5e05 1125 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
4e5ef14f 1126
c4ac052b 1127 for(i=0; i<entries; i++) {
70a61ed4
MN
1128 int count =get_be32(pb);
1129 int duration =get_be32(pb);
1130
b0519015 1131 if (duration < 0) {
138568e9 1132 av_log(c->fc, AV_LOG_WARNING, "negative ctts, ignoring\n");
b0519015
BC
1133 sc->ctts_count = 0;
1134 url_fskip(pb, 8 * (entries - i - 1));
1135 break;
1136 }
70a61ed4
MN
1137 sc->ctts_data[i].count = count;
1138 sc->ctts_data[i].duration= duration;
1139
1140 sc->time_rate= ff_gcd(sc->time_rate, duration);
c4ac052b
MN
1141 }
1142 return 0;
1143}
1144
1e77810d
BC
1145static void mov_build_index(MOVContext *mov, AVStream *st)
1146{
1147 MOVStreamContext *sc = st->priv_data;
1148 offset_t current_offset;
1149 int64_t current_dts = 0;
1150 unsigned int stts_index = 0;
1151 unsigned int stsc_index = 0;
1152 unsigned int stss_index = 0;
1153 unsigned int i, j;
1154
d3bc61ac
BC
1155 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1156 if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1157 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1158 unsigned int current_sample = 0;
1159 unsigned int stts_sample = 0;
1160 unsigned int keyframe, sample_size;
1161 unsigned int distance = 0;
1162 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1163
1164 st->nb_frames = sc->sample_count;
1165 for (i = 0; i < sc->chunk_count; i++) {
1166 current_offset = sc->chunk_offsets[i];
1167 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1168 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1169 stsc_index++;
1170 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1171 if (current_sample >= sc->sample_count) {
1172 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1173 goto out;
1174 }
1175 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1176 if (keyframe) {
1177 distance = 0;
1178 if (stss_index + 1 < sc->keyframe_count)
1179 stss_index++;
1180 }
1181 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1182 if(sc->pseudo_stream_id == -1 ||
585dac65 1183 sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id) {
1e77810d
BC
1184 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1185 keyframe ? AVINDEX_KEYFRAME : 0);
585dac65
BC
1186 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1187 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1188 current_offset, current_dts, sample_size, distance, keyframe);
1189 }
1e77810d
BC
1190 current_offset += sample_size;
1191 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1192 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1193 distance++;
1194 stts_sample++;
1195 current_sample++;
1196 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1197 stts_sample = 0;
1198 stts_index++;
1199 }
1200 }
1201 }
1202 } else { /* read whole chunk */
1203 unsigned int chunk_samples, chunk_size, chunk_duration;
1204 unsigned int frames = 1;
1205 for (i = 0; i < sc->chunk_count; i++) {
1206 current_offset = sc->chunk_offsets[i];
1207 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1208 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1209 stsc_index++;
1210 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1211 /* get chunk size, beware of alaw/ulaw/mace */
1212 if (sc->samples_per_frame > 0 &&
1213 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
3b8c000d 1214 if (sc->samples_per_frame < 160)
1e77810d
BC
1215 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1216 else {
1217 chunk_size = sc->bytes_per_frame;
1218 frames = chunk_samples / sc->samples_per_frame;
1219 chunk_samples = sc->samples_per_frame;
1220 }
48a55290 1221 } else
1e77810d 1222 chunk_size = chunk_samples * sc->sample_size;
1e77810d
BC
1223 for (j = 0; j < frames; j++) {
1224 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1225 /* get chunk duration */
1226 chunk_duration = 0;
1227 while (chunk_samples > 0) {
1228 if (chunk_samples < sc->stts_data[stts_index].count) {
1229 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1230 sc->stts_data[stts_index].count -= chunk_samples;
1231 break;
1232 } else {
1233 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1234 chunk_samples -= sc->stts_data[stts_index].count;
1235 if (stts_index + 1 < sc->stts_count)
1236 stts_index++;
1237 }
1238 }
1239 current_offset += sc->bytes_per_frame;
117a9190
BC
1240 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1241 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1242 chunk_size, chunk_duration);
1e77810d
BC
1243 assert(chunk_duration % sc->time_rate == 0);
1244 current_dts += chunk_duration / sc->time_rate;
1245 }
1246 }
1247 }
1248 out:
1249 /* adjust sample count to avindex entries */
1250 sc->sample_count = st->nb_index_entries;
1251}
bd991df2 1252
5ca1d879
ZK
1253static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1254{
1255 AVStream *st;
1256 MOVStreamContext *sc;
bd991df2 1257 int ret;
5ca1d879 1258
5ca1d879 1259 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1260 if (!st) return AVERROR(ENOMEM);
9a630c25 1261 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1262 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1263
5ca1d879 1264 st->priv_data = sc;
05edc1a7 1265 st->codec->codec_type = CODEC_TYPE_DATA;
25c4950e 1266 st->start_time = 0; /* XXX: check */
5ca1d879 1267
bd991df2
BC
1268 if ((ret = mov_read_default(c, pb, atom)) < 0)
1269 return ret;
1270
1271 /* sanity checks */
5e788d58
BC
1272 if(sc->chunk_count && (!sc->stts_count || !sc->sample_to_chunk_sz ||
1273 (!sc->sample_size && !sc->sample_count))){
6282c5f4
BC
1274 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1275 st->index);
bd991df2
BC
1276 sc->sample_count = 0; //ignore track
1277 return 0;
1278 }
1279 if(!sc->time_rate)
1280 sc->time_rate=1;
1281 if(!sc->time_scale)
1282 sc->time_scale= c->time_scale;
1283 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1284
3f78a3a9
BC
1285 if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
1286 !st->codec->frame_size && sc->stts_count == 1)
bd991df2
BC
1287 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1288
1289 if(st->duration != AV_NOPTS_VALUE){
1290 assert(st->duration % sc->time_rate == 0);
1291 st->duration /= sc->time_rate;
1292 }
1293 sc->ffindex = st->index;
1294 mov_build_index(c, st);
1295
1296 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1297 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
9e81a0ce
BC
1298 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1299 st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
bd991df2
BC
1300 } else
1301 sc->pb = c->fc->pb;
1302
1303 switch (st->codec->codec_id) {
1304#ifdef CONFIG_H261_DECODER
1305 case CODEC_ID_H261:
1306#endif
1307#ifdef CONFIG_H263_DECODER
1308 case CODEC_ID_H263:
1309#endif
1310#ifdef CONFIG_MPEG4_DECODER
1311 case CODEC_ID_MPEG4:
1312#endif
1313 st->codec->width= 0; /* let decoder init width/height */
1314 st->codec->height= 0;
1315 break;
bd991df2
BC
1316#ifdef CONFIG_VORBIS_DECODER
1317 case CODEC_ID_VORBIS:
1318#endif
bd991df2
BC
1319 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1320 break;
1321 }
f9900374
BC
1322
1323 /* Do not need those anymore. */
1324 av_freep(&sc->chunk_offsets);
1325 av_freep(&sc->sample_to_chunk);
1326 av_freep(&sc->sample_sizes);
1327 av_freep(&sc->keyframes);
1328 av_freep(&sc->stts_data);
1329
bd991df2 1330 return 0;
5ca1d879
ZK
1331}
1332
d2ace376
BF
1333static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1334{
1335 uint16_t str_size = get_be16(pb); /* string length */;
1336
1337 get_be16(pb); /* skip language */
1338 get_buffer(pb, str, FFMIN(size, str_size));
1339}
1340
1341static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1342{
1343 uint64_t end = url_ftell(pb) + atom.size;
1344
1345 while (url_ftell(pb) + 8 < end) {
1346 uint32_t tag_size = get_be32(pb);
1347 uint32_t tag = get_le32(pb);
1348 uint64_t next = url_ftell(pb) + tag_size - 8;
1349
aaac6c29
BC
1350 if (next > end) // stop if tag_size is wrong
1351 break;
1352
d2ace376
BF
1353 switch (tag) {
1354 case MKTAG(0xa9,'n','a','m'):
1355 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1356 break;
1357 case MKTAG(0xa9,'w','r','t'):
1358 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1359 break;
1360 case MKTAG(0xa9,'c','p','y'):
1361 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1362 break;
1363 case MKTAG(0xa9,'i','n','f'):
1364 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1365 break;
1366 default:
1367 break;
1368 }
1369
1370 url_fseek(pb, next, SEEK_SET);
1371 }
1372
1373 return 0;
1374}
1375
5ca1d879
ZK
1376static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1377{
ec072669
JS
1378 int i;
1379 int width;
1380 int height;
1381 int64_t disp_transform[2];
1382 int display_matrix[3][2];
f444b977
BC
1383 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1384 int version = get_byte(pb);
5ca1d879 1385
23f08617 1386 get_be24(pb); /* flags */
5ca1d879
ZK
1387 /*
1388 MOV_TRACK_ENABLED 0x0001
1389 MOV_TRACK_IN_MOVIE 0x0002
1390 MOV_TRACK_IN_PREVIEW 0x0004
1391 MOV_TRACK_IN_POSTER 0x0008
1392 */
1393
1175561e
BC
1394 if (version == 1) {
1395 get_be64(pb);
1396 get_be64(pb);
1397 } else {
1398 get_be32(pb); /* creation time */
1399 get_be32(pb); /* modification time */
1400 }
5ca1d879
ZK
1401 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1402 get_be32(pb); /* reserved */
25c4950e 1403 st->start_time = 0; /* check */
117a9190
BC
1404 /* highlevel (considering edits) duration in movie timebase */
1405 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1406 get_be32(pb); /* reserved */
1407 get_be32(pb); /* reserved */
1408
1409 get_be16(pb); /* layer */
1410 get_be16(pb); /* alternate group */
1411 get_be16(pb); /* volume */
1412 get_be16(pb); /* reserved */
1413
ec072669
JS
1414 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1415 // they're kept in fixed point format through all calculations
1416 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1417 for (i = 0; i < 3; i++) {
1418 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1419 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1420 get_be32(pb); // 2.30 fixed point (not used)
1421 }
5ca1d879 1422
ec072669
JS
1423 width = get_be32(pb); // 16.16 fixed point track width
1424 height = get_be32(pb); // 16.16 fixed point track height
1425
1426 //transform the display width/height according to the matrix
1427 // skip this if the display matrix is the default identity matrix
1428 // to keep the same scale, use [width height 1<<16]
1429 if (width && height &&
1430 (display_matrix[0][0] != 65536 || display_matrix[0][1] ||
1431 display_matrix[1][0] || display_matrix[1][1] != 65536 ||
1432 display_matrix[2][0] || display_matrix[2][1])) {
1433 for (i = 0; i < 2; i++)
1434 disp_transform[i] =
1435 (int64_t) width * display_matrix[0][i] +
1436 (int64_t) height * display_matrix[1][i] +
1437 ((int64_t) display_matrix[2][i] << 16);
1438
1439 //sample aspect ratio is new width/height divided by old width/height
1440 st->codec->sample_aspect_ratio = av_d2q(
1441 ((double) disp_transform[0] * height) /
1442 ((double) disp_transform[1] * width), INT_MAX);
1443 }
5ca1d879
ZK
1444 return 0;
1445}
1446
61aedb0f
BC
1447static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1448{
1449 MOVFragment *frag = &c->fragment;
1450 MOVTrackExt *trex = NULL;
1451 int flags, track_id, i;
1452
1453 get_byte(pb); /* version */
1454 flags = get_be24(pb);
1455
1456 track_id = get_be32(pb);
1457 if (!track_id || track_id > c->fc->nb_streams)
1458 return -1;
1459 frag->track_id = track_id;
1460 for (i = 0; i < c->trex_count; i++)
1461 if (c->trex_data[i].track_id == frag->track_id) {
1462 trex = &c->trex_data[i];
1463 break;
1464 }
1465 if (!trex) {
1466 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1467 return -1;
1468 }
1469
1470 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1471 else frag->base_data_offset = frag->moof_offset;
1472 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1473 else frag->stsd_id = trex->stsd_id;
1474
1475 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1476 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1477 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1478 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1479 return 0;
1480}
1481
1482static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1483{
1484 MOVTrackExt *trex;
1485
1486 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1487 return -1;
1488 c->trex_data = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1489 if (!c->trex_data)
1490 return AVERROR(ENOMEM);
1491 trex = &c->trex_data[c->trex_count++];
1492 get_byte(pb); /* version */
1493 get_be24(pb); /* flags */
1494 trex->track_id = get_be32(pb);
1495 trex->stsd_id = get_be32(pb);
1496 trex->duration = get_be32(pb);
1497 trex->size = get_be32(pb);
1498 trex->flags = get_be32(pb);
1499 return 0;
1500}
1501
1502static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1503{
1504 MOVFragment *frag = &c->fragment;
44e43aab
BC
1505 AVStream *st;
1506 MOVStreamContext *sc;
61aedb0f
BC
1507 uint64_t offset;
1508 int64_t dts;
1509 int data_offset = 0;
1510 unsigned entries, first_sample_flags = frag->flags;
1511 int flags, distance, i;
1512
44e43aab
BC
1513 if (!frag->track_id || frag->track_id > c->fc->nb_streams)
1514 return -1;
1515 st = c->fc->streams[frag->track_id-1];
1516 sc = st->priv_data;
61aedb0f
BC
1517 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1518 return 0;
61aedb0f
BC
1519 get_byte(pb); /* version */
1520 flags = get_be24(pb);
1521 entries = get_be32(pb);
1522 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1523 if (flags & 0x001) data_offset = get_be32(pb);
1524 if (flags & 0x004) first_sample_flags = get_be32(pb);
1525 if (flags & 0x800) {
1526 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1527 return -1;
1528 sc->ctts_data = av_realloc(sc->ctts_data,
1529 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1530 if (!sc->ctts_data)
1531 return AVERROR(ENOMEM);
1532 }
1533 dts = st->duration;
1534 offset = frag->base_data_offset + data_offset;
1535 distance = 0;
1536 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1537 for (i = 0; i < entries; i++) {
1538 unsigned sample_size = frag->size;
1539 int sample_flags = i ? frag->flags : first_sample_flags;
1540 unsigned sample_duration = frag->duration;
1541 int keyframe;
1542
1543 if (flags & 0x100) sample_duration = get_be32(pb);
1544 if (flags & 0x200) sample_size = get_be32(pb);
1545 if (flags & 0x400) sample_flags = get_be32(pb);
1546 if (flags & 0x800) {
1547 sc->ctts_data[sc->ctts_count].count = 1;
1548 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1549 sc->ctts_count++;
1550 }
1551 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1552 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1553 distance = 0;
1554 av_add_index_entry(st, offset, dts, sample_size, distance,
1555 keyframe ? AVINDEX_KEYFRAME : 0);
1556 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1557 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1558 offset, dts, sample_size, distance, keyframe);
1559 distance++;
1560 assert(sample_duration % sc->time_rate == 0);
1561 dts += sample_duration / sc->time_rate;
1562 offset += sample_size;
1563 }
1564 frag->moof_offset = offset;
1565 sc->sample_count = st->nb_index_entries;
1566 st->duration = dts;
1567 return 0;
1568}
1569
5ca1d879
ZK
1570/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1571/* like the files created with Adobe Premiere 5.0, for samples see */
1572/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1573static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1574{
1575 int err;
5ca1d879 1576
5ca1d879
ZK
1577 if (atom.size < 8)
1578 return 0; /* continue */
1579 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1580 url_fskip(pb, atom.size - 4);
1581 return 0;
1582 }
1583 atom.type = get_le32(pb);
1584 atom.offset += 8;
1585 atom.size -= 8;
1c126b4f 1586 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
1587 url_fskip(pb, atom.size);
1588 return 0;
1589 }
1590 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
1591 return err;
1592}
1593
5ca1d879 1594static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1595{
d966b2f0 1596#ifdef CONFIG_ZLIB
0147f198 1597 ByteIOContext ctx;
b6a17df4
ZK
1598 uint8_t *cmov_data;
1599 uint8_t *moov_data; /* uncompressed data */
0147f198 1600 long cmov_len, moov_len;
6f04eb1e 1601 int ret = -1;
b6a17df4 1602
0147f198 1603 get_be32(pb); /* dcom atom */
1c126b4f 1604 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 1605 return -1;
1c126b4f 1606 if (get_le32(pb) != MKTAG('z','l','i','b')) {
4e5ef14f 1607 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
1608 return -1;
1609 }
1610 get_be32(pb); /* cmvd atom */
1c126b4f 1611 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
1612 return -1;
1613 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1614 cmov_len = atom.size - 6 * 4;
5cd62665 1615
9a630c25 1616 cmov_data = av_malloc(cmov_len);
0147f198
FR
1617 if (!cmov_data)
1618 return -1;
9a630c25 1619 moov_data = av_malloc(moov_len);
0147f198
FR
1620 if (!moov_data) {
1621 av_free(cmov_data);
1622 return -1;
1623 }
1624 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1625 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 1626 goto free_and_return;
942f3bb5 1627 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 1628 goto free_and_return;
1c126b4f 1629 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
1630 atom.offset = 0;
1631 atom.size = moov_len;
9ed83b0a 1632#ifdef DEBUG
dbb4f00a 1633// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 1634#endif
5ca1d879 1635 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 1636free_and_return:
0147f198
FR
1637 av_free(moov_data);
1638 av_free(cmov_data);
1639 return ret;
d966b2f0
BC
1640#else
1641 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1642 return -1;
0147f198 1643#endif
d966b2f0 1644}
0147f198 1645
baf25c9d
GC
1646/* edit list atom */
1647static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1648{
7c622eed 1649 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
e0977c80
BC
1650 int i, edit_count;
1651
1652 get_byte(pb); /* version */
23f08617 1653 get_be24(pb); /* flags */
7c622eed 1654 edit_count= sc->edit_count = get_be32(pb); /* entries */
e0977c80
BC
1655
1656 for(i=0; i<edit_count; i++){
d435e520 1657 int time;
e0977c80 1658 get_be32(pb); /* Track duration */
d435e520 1659 time = get_be32(pb); /* Media time */
e0977c80 1660 get_be32(pb); /* Media rate */
d435e520
BC
1661 if (time != 0)
1662 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1663 "a/v desync might occur, patch welcome\n");
e0977c80 1664 }
7c622eed 1665 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
e0977c80 1666 return 0;
baf25c9d
GC
1667}
1668
6cea494e 1669static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 1670{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f
BC
1671{ MKTAG('c','o','6','4'), mov_read_stco },
1672{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1673{ MKTAG('d','i','n','f'), mov_read_default },
1674{ MKTAG('d','r','e','f'), mov_read_dref },
1675{ MKTAG('e','d','t','s'), mov_read_default },
1676{ MKTAG('e','l','s','t'), mov_read_elst },
1677{ MKTAG('e','n','d','a'), mov_read_enda },
1678{ MKTAG('f','i','e','l'), mov_read_extradata },
1679{ MKTAG('f','t','y','p'), mov_read_ftyp },
1680{ MKTAG('g','l','b','l'), mov_read_glbl },
1681{ MKTAG('h','d','l','r'), mov_read_hdlr },
1682{ MKTAG('j','p','2','h'), mov_read_extradata },
1683{ MKTAG('m','d','a','t'), mov_read_mdat },
1684{ MKTAG('m','d','h','d'), mov_read_mdhd },
1685{ MKTAG('m','d','i','a'), mov_read_default },
1686{ MKTAG('m','i','n','f'), mov_read_default },
1687{ MKTAG('m','o','o','f'), mov_read_moof },
1688{ MKTAG('m','o','o','v'), mov_read_moov },
1689{ MKTAG('m','v','e','x'), mov_read_default },
1690{ MKTAG('m','v','h','d'), mov_read_mvhd },
1691{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1692{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1693{ MKTAG('a','v','c','C'), mov_read_glbl },
1694{ MKTAG('s','t','b','l'), mov_read_default },
1695{ MKTAG('s','t','c','o'), mov_read_stco },
1696{ MKTAG('s','t','s','c'), mov_read_stsc },
1697{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
1698{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
1699{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
1700{ MKTAG('s','t','t','s'), mov_read_stts },
1701{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
1702{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
1703{ MKTAG('t','r','a','k'), mov_read_trak },
1704{ MKTAG('t','r','a','f'), mov_read_default },
1705{ MKTAG('t','r','e','x'), mov_read_trex },
1706{ MKTAG('t','r','u','n'), mov_read_trun },
1707{ MKTAG('u','d','t','a'), mov_read_udta },
1708{ MKTAG('w','a','v','e'), mov_read_wave },
1709{ MKTAG('e','s','d','s'), mov_read_esds },
1710{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
1711{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 1712{ 0, NULL }
6cea494e
ZK
1713};
1714
c9a65ca8
FB
1715static int mov_probe(AVProbeData *p)
1716{
0e7eed09
FB
1717 unsigned int offset;
1718 uint32_t tag;
2497479f 1719 int score = 0;
3ffe3793 1720
c9a65ca8 1721 /* check file header */
0e7eed09
FB
1722 offset = 0;
1723 for(;;) {
1724 /* ignore invalid offset */
1725 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 1726 return score;
fead30d4 1727 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 1728 switch(tag) {
2497479f 1729 /* check for obvious tags */
1c126b4f
BC
1730 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1731 case MKTAG('m','o','o','v'):
1732 case MKTAG('m','d','a','t'):
1733 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1734 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 1735 case MKTAG('f','t','y','p'):
3ffe3793 1736 return AVPROBE_SCORE_MAX;
2497479f 1737 /* those are more common words, so rate then a bit less */
1c126b4f
BC
1738 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1739 case MKTAG('w','i','d','e'):
1740 case MKTAG('f','r','e','e'):
1741 case MKTAG('j','u','n','k'):
1742 case MKTAG('p','i','c','t'):
2497479f 1743 return AVPROBE_SCORE_MAX - 5;
5469b788 1744 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
1745 case MKTAG('s','k','i','p'):
1746 case MKTAG('u','u','i','d'):
1747 case MKTAG('p','r','f','l'):
fead30d4 1748 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
1749 /* if we only find those cause probedata is too small at least rate them */
1750 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
1751 break;
1752 default:
1753 /* unrecognized tag */
2497479f 1754 return score;
0e7eed09 1755 }
3ffe3793 1756 }
2497479f 1757 return score;
c9a65ca8
FB
1758}
1759
a266644f 1760static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1761{
e4141433 1762 MOVContext *mov = s->priv_data;
899681cd 1763 ByteIOContext *pb = s->pb;
f9900374 1764 int err;
5ca1d879 1765 MOV_atom_t atom = { 0, 0, 0 };
6cea494e 1766
6cea494e 1767 mov->fc = s;
117a9190
BC
1768 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1769 if(!url_is_streamed(pb))
bb270c08 1770 atom.size = url_fsize(pb);
6cea494e 1771 else
fa22ca22 1772 atom.size = INT64_MAX;
6cea494e 1773
6cea494e 1774 /* check MOV header */
612b5cbb
BC
1775 if ((err = mov_read_default(mov, pb, atom)) < 0) {
1776 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
1777 return err;
1778 }
1779 if (!mov->found_moov) {
1780 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 1781 return -1;
6cea494e 1782 }
0265fe81 1783 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 1784
6cea494e
ZK
1785 return 0;
1786}
1787
a266644f 1788static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e 1789{
b72708f8
BC
1790 MOVContext *mov = s->priv_data;
1791 MOVStreamContext *sc = 0;
1792 AVIndexEntry *sample = 0;
86d8602f 1793 int64_t best_dts = INT64_MAX;
b72708f8 1794 int i;
433aeb62 1795 retry:
11f16b66 1796 for (i = 0; i < s->nb_streams; i++) {
7c622eed
BC
1797 AVStream *st = s->streams[i];
1798 MOVStreamContext *msc = st->priv_data;
221e21b7 1799 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
7c622eed 1800 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
29c90869
BC
1801 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1802 AV_TIME_BASE, msc->time_scale);
1c02d96f 1803 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
1804 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1805 (!url_is_streamed(s->pb) &&
221e21b7 1806 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 1807 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 1808 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
1809 sample = current_sample;
1810 best_dts = dts;
1811 sc = msc;
86d8602f 1812 }
6cea494e 1813 }
6cea494e 1814 }
433aeb62
BC
1815 if (!sample) {
1816 mov->found_mdat = 0;
1817 if (!url_is_streamed(s->pb) ||
1818 mov_read_default(mov, s->pb, (MOV_atom_t){ 0, 0, INT64_MAX }) < 0 ||
1819 url_feof(s->pb))
1820 return -1;
1821 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
1822 goto retry;
1823 }
b72708f8
BC
1824 /* must be done just before reading, to avoid infinite loop on sample */
1825 sc->current_sample++;
221e21b7 1826 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
29c90869
BC
1827 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1828 sc->ffindex, sample->pos);
bb270c08 1829 return -1;
6cea494e 1830 }
221e21b7 1831 av_get_packet(sc->pb, pkt, sample->size);
312954f0 1832#ifdef CONFIG_DV_DEMUXER
56ea717b
BC
1833 if (mov->dv_demux && sc->dv_audio_container) {
1834 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1835 av_free(pkt->data);
300aa2b0
BC
1836 pkt->size = 0;
1837 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1838 return -1;
56ea717b 1839 }
312954f0 1840#endif
b72708f8
BC
1841 pkt->stream_index = sc->ffindex;
1842 pkt->dts = sample->timestamp;
1843 if (sc->ctts_data) {
1844 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1845 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1846 /* update ctts context */
1847 sc->sample_to_ctime_sample++;
29c90869
BC
1848 if (sc->sample_to_ctime_index < sc->ctts_count &&
1849 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
b72708f8
BC
1850 sc->sample_to_ctime_index++;
1851 sc->sample_to_ctime_sample = 0;
b565ea09 1852 }
b72708f8 1853 } else {
e8430214
HG
1854 AVStream *st = s->streams[sc->ffindex];
1855 int64_t next_dts = (sc->current_sample < sc->sample_count) ?
1856 st->index_entries[sc->current_sample].timestamp : st->duration;
1857 pkt->duration = next_dts - pkt->dts;
b72708f8 1858 pkt->pts = pkt->dts;
b565ea09 1859 }
b72708f8
BC
1860 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1861 pkt->pos = sample->pos;
29c90869
BC
1862 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1863 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
1864 return 0;
1865}
3ffe3793 1866
b72708f8
BC
1867static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1868{
1869 MOVStreamContext *sc = st->priv_data;
1870 int sample, time_sample;
1871 int i;
115329f1 1872
b72708f8 1873 sample = av_index_search_timestamp(st, timestamp, flags);
318c5e05 1874 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
1875 if (sample < 0) /* not sure what to do */
1876 return -1;
1877 sc->current_sample = sample;
1c02d96f 1878 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
1879 /* adjust ctts index */
1880 if (sc->ctts_data) {
1881 time_sample = 0;
1882 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
1883 int next = time_sample + sc->ctts_data[i].count;
1884 if (next > sc->current_sample) {
b72708f8 1885 sc->sample_to_ctime_index = i;
54a5c719 1886 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
b72708f8 1887 break;
115329f1 1888 }
54a5c719 1889 time_sample = next;
247d56f5 1890 }
247d56f5 1891 }
b72708f8 1892 return sample;
6cea494e
ZK
1893}
1894
961e0ccd 1895static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 1896{
b72708f8
BC
1897 AVStream *st;
1898 int64_t seek_timestamp, timestamp;
1899 int sample;
1900 int i;
baf25c9d 1901
b72708f8 1902 if (stream_index >= s->nb_streams)
baf25c9d 1903 return -1;
baf25c9d 1904
b72708f8
BC
1905 st = s->streams[stream_index];
1906 sample = mov_seek_stream(st, sample_time, flags);
1907 if (sample < 0)
baf25c9d 1908 return -1;
baf25c9d 1909
b72708f8
BC
1910 /* adjust seek timestamp to found sample timestamp */
1911 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 1912
b72708f8
BC
1913 for (i = 0; i < s->nb_streams; i++) {
1914 st = s->streams[i];
1915 if (stream_index == i || st->discard == AVDISCARD_ALL)
1916 continue;
baf25c9d 1917
b72708f8
BC
1918 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1919 mov_seek_stream(st, timestamp, flags);
115329f1 1920 }
baf25c9d
GC
1921 return 0;
1922}
baf25c9d 1923
a266644f 1924static int mov_read_close(AVFormatContext *s)
6cea494e 1925{
221e21b7 1926 int i, j;
e4141433 1927 MOVContext *mov = s->priv_data;
11f16b66 1928 for(i=0; i<s->nb_streams; i++) {
7c622eed
BC
1929 MOVStreamContext *sc = s->streams[i]->priv_data;
1930 av_freep(&sc->ctts_data);
221e21b7
BC
1931 for (j=0; j<sc->drefs_count; j++)
1932 av_freep(&sc->drefs[j].path);
1933 av_freep(&sc->drefs);
1934 if (sc->pb && sc->pb != s->pb)
1935 url_fclose(sc->pb);
4440b118 1936 }
b60c0454
BC
1937 if(mov->dv_demux){
1938 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1939 av_freep(&mov->dv_fctx->streams[i]->codec);
1940 av_freep(&mov->dv_fctx->streams[i]);
1941 }
1942 av_freep(&mov->dv_fctx);
1943 av_freep(&mov->dv_demux);
1944 }
61aedb0f 1945 av_freep(&mov->trex_data);
6cea494e
ZK
1946 return 0;
1947}
1948
ff70e601 1949AVInputFormat mov_demuxer = {
fc5188f3 1950 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 1951 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
1952 sizeof(MOVContext),
1953 mov_probe,
6cea494e
ZK
1954 mov_read_header,
1955 mov_read_packet,
1956 mov_read_close,
baf25c9d 1957 mov_read_seek,
6cea494e 1958};