Rename update() function to backward_filter() and add a doxy comment
[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) {
b72708f8 835 int bits_per_sample;
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
851 switch (st->codec->codec_id) {
b72708f8
BC
852 case CODEC_ID_PCM_S8:
853 case CODEC_ID_PCM_U8:
854 if (st->codec->bits_per_sample == 16)
855 st->codec->codec_id = CODEC_ID_PCM_S16BE;
856 break;
0dd39bfe 857 case CODEC_ID_PCM_S16LE:
de23f234
BC
858 case CODEC_ID_PCM_S16BE:
859 if (st->codec->bits_per_sample == 8)
860 st->codec->codec_id = CODEC_ID_PCM_S8;
0299a87c
BC
861 else if (st->codec->bits_per_sample == 24)
862 st->codec->codec_id = CODEC_ID_PCM_S24BE;
de23f234 863 break;
53152765
BC
864 /* set values for old format before stsd version 1 appeared */
865 case CODEC_ID_MACE3:
866 sc->samples_per_frame = 6;
867 sc->bytes_per_frame = 2*st->codec->channels;
868 break;
869 case CODEC_ID_MACE6:
870 sc->samples_per_frame = 6;
871 sc->bytes_per_frame = 1*st->codec->channels;
872 break;
873 case CODEC_ID_ADPCM_IMA_QT:
874 sc->samples_per_frame = 64;
875 sc->bytes_per_frame = 34*st->codec->channels;
876 break;
cc326d2b
BC
877 case CODEC_ID_GSM:
878 sc->samples_per_frame = 160;
879 sc->bytes_per_frame = 33;
880 break;
de23f234
BC
881 default:
882 break;
6d6d7970 883 }
14342fd5 884
755bfeab 885 //Read QT version 1 fields. In version 0 these do not exist.
318c5e05 886 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
152e9a43 887 if(!c->isom) {
80c5b9a1 888 if(version==1) {
e14f79ed 889 sc->samples_per_frame = get_be32(pb);
80c5b9a1 890 get_be32(pb); /* bytes per packet */
e14f79ed 891 sc->bytes_per_frame = get_be32(pb);
80c5b9a1
BC
892 get_be32(pb); /* bytes per sample */
893 } else if(version==2) {
894 get_be32(pb); /* sizeof struct only */
895 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
896 st->codec->channels = get_be32(pb);
897 get_be32(pb); /* always 0x7F000000 */
898 get_be32(pb); /* bits per channel if sound is uncompressed */
899 get_be32(pb); /* lcpm format specific flag */
900 get_be32(pb); /* bytes per audio packet if constant */
901 get_be32(pb); /* lpcm frames per audio packet if constant */
902 }
152e9a43 903 }
9770089d
BC
904
905 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
906 if (bits_per_sample) {
907 st->codec->bits_per_sample = bits_per_sample;
908 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
909 }
cc8d87b7
MN
910 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
911 st->codec->codec_id= id;
de23f234
BC
912 } else {
913 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
914 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 915 }
de23f234
BC
916 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
917 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
918 if (a.size > 8) {
919 if (mov_read_default(c, pb, a) < 0)
920 return -1;
921 } else if (a.size > 0)
de23f234 922 url_fskip(pb, a.size);
6cea494e 923 }
115329f1 924
60f5c96e 925 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 926 st->codec->sample_rate= sc->time_scale;
e31bd3e3 927
d00f8e17 928 /* special codec parameters handling */
e31bd3e3 929 switch (st->codec->codec_id) {
989ac5a6 930#ifdef CONFIG_DV_DEMUXER
b60c0454
BC
931 case CODEC_ID_DVAUDIO:
932 c->dv_fctx = av_alloc_format_context();
933 c->dv_demux = dv_init_demux(c->dv_fctx);
934 if (!c->dv_demux) {
935 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
936 return -1;
937 }
938 sc->dv_audio_container = 1;
939 st->codec->codec_id = CODEC_ID_PCM_S16LE;
940 break;
989ac5a6 941#endif
b95319a2
BC
942 /* no ifdef since parameters are always those */
943 case CODEC_ID_AMR_WB:
944 st->codec->sample_rate= 16000;
945 st->codec->channels= 1; /* really needed */
946 break;
3f78a3a9 947 case CODEC_ID_QCELP:
b95319a2 948 case CODEC_ID_AMR_NB:
cfb5a2ab 949 st->codec->frame_size= sc->samples_per_frame;
b95319a2
BC
950 st->codec->sample_rate= 8000;
951 st->codec->channels= 1; /* really needed */
952 break;
a41104f8 953 case CODEC_ID_MP2:
c59f24e6 954 case CODEC_ID_MP3:
95a07973 955 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 956 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 957 break;
5610f20e 958 case CODEC_ID_GSM:
74e9b9ae
BC
959 case CODEC_ID_ADPCM_MS:
960 case CODEC_ID_ADPCM_IMA_WAV:
961 st->codec->block_align = sc->bytes_per_frame;
962 break;
be511925
BC
963 case CODEC_ID_ALAC:
964 if (st->codec->extradata_size == 36)
965 st->codec->frame_size = AV_RB32((st->codec->extradata+12));
966 break;
e31bd3e3
BC
967 default:
968 break;
969 }
5cd62665 970
6cea494e
ZK
971 return 0;
972}
973
5ca1d879 974static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 975{
5ca1d879 976 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 977 MOVStreamContext *sc = st->priv_data;
568e18b1 978 unsigned int i, entries;
b6a17df4 979
6cea494e 980 get_byte(pb); /* version */
23f08617 981 get_be24(pb); /* flags */
6cea494e
ZK
982
983 entries = get_be32(pb);
115329f1 984
e23848a4 985 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
568e18b1 986 return -1;
115329f1 987
f8c18cd7
BC
988 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
989
6cea494e 990 sc->sample_to_chunk_sz = entries;
e23848a4 991 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
b6a17df4
ZK
992 if (!sc->sample_to_chunk)
993 return -1;
6cea494e
ZK
994 for(i=0; i<entries; i++) {
995 sc->sample_to_chunk[i].first = get_be32(pb);
996 sc->sample_to_chunk[i].count = get_be32(pb);
997 sc->sample_to_chunk[i].id = get_be32(pb);
6cea494e
ZK
998 }
999 return 0;
1000}
1001
247d56f5
BB
1002static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1003{
1004 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1005 MOVStreamContext *sc = st->priv_data;
568e18b1 1006 unsigned int i, entries;
247d56f5 1007
247d56f5 1008 get_byte(pb); /* version */
23f08617 1009 get_be24(pb); /* flags */
247d56f5
BB
1010
1011 entries = get_be32(pb);
115329f1 1012
1c02d96f 1013 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1014 return -1;
115329f1 1015
247d56f5 1016 sc->keyframe_count = entries;
f8c18cd7
BC
1017
1018 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
1019
1c02d96f 1020 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5
BB
1021 if (!sc->keyframes)
1022 return -1;
1023 for(i=0; i<entries; i++) {
1024 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1025 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1026 }
1027 return 0;
1028}
1029
5ca1d879 1030static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1031{
5ca1d879 1032 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1033 MOVStreamContext *sc = st->priv_data;
b72708f8 1034 unsigned int i, entries, sample_size;
b6a17df4 1035
6cea494e 1036 get_byte(pb); /* version */
23f08617 1037 get_be24(pb); /* flags */
5cd62665 1038
b72708f8
BC
1039 sample_size = get_be32(pb);
1040 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1041 sc->sample_size = sample_size;
6cea494e 1042 entries = get_be32(pb);
1c02d96f 1043 if(entries >= UINT_MAX / sizeof(int))
568e18b1
MN
1044 return -1;
1045
6cea494e 1046 sc->sample_count = entries;
b72708f8
BC
1047 if (sample_size)
1048 return 0;
1049
f8c18cd7
BC
1050 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1051
1c02d96f 1052 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4
ZK
1053 if (!sc->sample_sizes)
1054 return -1;
eb61405a 1055 for(i=0; i<entries; i++)
6cea494e 1056 sc->sample_sizes[i] = get_be32(pb);
6cea494e
ZK
1057 return 0;
1058}
1059
5ca1d879 1060static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1061{
5ca1d879 1062 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1063 MOVStreamContext *sc = st->priv_data;
568e18b1 1064 unsigned int i, entries;
d957696f
MN
1065 int64_t duration=0;
1066 int64_t total_sample_count=0;
b6a17df4 1067
0147f198 1068 get_byte(pb); /* version */
23f08617 1069 get_be24(pb); /* flags */
0147f198 1070 entries = get_be32(pb);
e23848a4 1071 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
568e18b1 1072 return -1;
891f64b3 1073
cd7352d5 1074 sc->stts_count = entries;
e23848a4 1075 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1076 if (!sc->stts_data)
1077 return -1;
f8c18cd7 1078 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
cd7352d5
MN
1079
1080 sc->time_rate=0;
1081
0147f198 1082 for(i=0; i<entries; i++) {
cd461d48
MN
1083 int sample_duration;
1084 int sample_count;
0147f198 1085
891f64b3 1086 sample_count=get_be32(pb);
0147f198 1087 sample_duration = get_be32(pb);
cd7352d5
MN
1088 sc->stts_data[i].count= sample_count;
1089 sc->stts_data[i].duration= sample_duration;
1090
1091 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
961e0ccd 1092
318c5e05 1093 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1094
7e815047 1095 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1096 total_sample_count+=sample_count;
891f64b3 1097 }
1098
961e0ccd
MN
1099 st->nb_frames= total_sample_count;
1100 if(duration)
1101 st->duration= duration;
0147f198
FR
1102 return 0;
1103}
1104
c4ac052b
MN
1105static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1106{
70a61ed4 1107 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1108 MOVStreamContext *sc = st->priv_data;
c4ac052b
MN
1109 unsigned int i, entries;
1110
c4ac052b 1111 get_byte(pb); /* version */
23f08617 1112 get_be24(pb); /* flags */
c4ac052b 1113 entries = get_be32(pb);
e23848a4 1114 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
c4ac052b
MN
1115 return -1;
1116
70a61ed4 1117 sc->ctts_count = entries;
e23848a4 1118 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1119 if (!sc->ctts_data)
1120 return -1;
318c5e05 1121 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
4e5ef14f 1122
c4ac052b 1123 for(i=0; i<entries; i++) {
70a61ed4
MN
1124 int count =get_be32(pb);
1125 int duration =get_be32(pb);
1126
b0519015
BC
1127 if (duration < 0) {
1128 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1129 sc->ctts_count = 0;
1130 url_fskip(pb, 8 * (entries - i - 1));
1131 break;
1132 }
70a61ed4
MN
1133 sc->ctts_data[i].count = count;
1134 sc->ctts_data[i].duration= duration;
1135
1136 sc->time_rate= ff_gcd(sc->time_rate, duration);
c4ac052b
MN
1137 }
1138 return 0;
1139}
1140
1e77810d
BC
1141static void mov_build_index(MOVContext *mov, AVStream *st)
1142{
1143 MOVStreamContext *sc = st->priv_data;
1144 offset_t current_offset;
1145 int64_t current_dts = 0;
1146 unsigned int stts_index = 0;
1147 unsigned int stsc_index = 0;
1148 unsigned int stss_index = 0;
1149 unsigned int i, j;
1150
d3bc61ac
BC
1151 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1152 if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1153 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1154 unsigned int current_sample = 0;
1155 unsigned int stts_sample = 0;
1156 unsigned int keyframe, sample_size;
1157 unsigned int distance = 0;
1158 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1159
1160 st->nb_frames = sc->sample_count;
1161 for (i = 0; i < sc->chunk_count; i++) {
1162 current_offset = sc->chunk_offsets[i];
1163 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1164 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1165 stsc_index++;
1166 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1167 if (current_sample >= sc->sample_count) {
1168 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1169 goto out;
1170 }
1171 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1172 if (keyframe) {
1173 distance = 0;
1174 if (stss_index + 1 < sc->keyframe_count)
1175 stss_index++;
1176 }
1177 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1178 if(sc->pseudo_stream_id == -1 ||
585dac65 1179 sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id) {
1e77810d
BC
1180 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1181 keyframe ? AVINDEX_KEYFRAME : 0);
585dac65
BC
1182 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1183 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1184 current_offset, current_dts, sample_size, distance, keyframe);
1185 }
1e77810d
BC
1186 current_offset += sample_size;
1187 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1188 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1189 distance++;
1190 stts_sample++;
1191 current_sample++;
1192 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1193 stts_sample = 0;
1194 stts_index++;
1195 }
1196 }
1197 }
1198 } else { /* read whole chunk */
1199 unsigned int chunk_samples, chunk_size, chunk_duration;
1200 unsigned int frames = 1;
1201 for (i = 0; i < sc->chunk_count; i++) {
1202 current_offset = sc->chunk_offsets[i];
1203 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1204 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1205 stsc_index++;
1206 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1207 /* get chunk size, beware of alaw/ulaw/mace */
1208 if (sc->samples_per_frame > 0 &&
1209 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
3b8c000d 1210 if (sc->samples_per_frame < 160)
1e77810d
BC
1211 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1212 else {
1213 chunk_size = sc->bytes_per_frame;
1214 frames = chunk_samples / sc->samples_per_frame;
1215 chunk_samples = sc->samples_per_frame;
1216 }
48a55290 1217 } else
1e77810d 1218 chunk_size = chunk_samples * sc->sample_size;
1e77810d
BC
1219 for (j = 0; j < frames; j++) {
1220 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1221 /* get chunk duration */
1222 chunk_duration = 0;
1223 while (chunk_samples > 0) {
1224 if (chunk_samples < sc->stts_data[stts_index].count) {
1225 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1226 sc->stts_data[stts_index].count -= chunk_samples;
1227 break;
1228 } else {
1229 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1230 chunk_samples -= sc->stts_data[stts_index].count;
1231 if (stts_index + 1 < sc->stts_count)
1232 stts_index++;
1233 }
1234 }
1235 current_offset += sc->bytes_per_frame;
117a9190
BC
1236 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1237 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1238 chunk_size, chunk_duration);
1e77810d
BC
1239 assert(chunk_duration % sc->time_rate == 0);
1240 current_dts += chunk_duration / sc->time_rate;
1241 }
1242 }
1243 }
1244 out:
1245 /* adjust sample count to avindex entries */
1246 sc->sample_count = st->nb_index_entries;
1247}
bd991df2 1248
5ca1d879
ZK
1249static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1250{
1251 AVStream *st;
1252 MOVStreamContext *sc;
bd991df2 1253 int ret;
5ca1d879 1254
5ca1d879 1255 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1256 if (!st) return AVERROR(ENOMEM);
9a630c25 1257 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1258 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1259
5ca1d879 1260 st->priv_data = sc;
05edc1a7 1261 st->codec->codec_type = CODEC_TYPE_DATA;
25c4950e 1262 st->start_time = 0; /* XXX: check */
5ca1d879 1263
bd991df2
BC
1264 if ((ret = mov_read_default(c, pb, atom)) < 0)
1265 return ret;
1266
1267 /* sanity checks */
5e788d58
BC
1268 if(sc->chunk_count && (!sc->stts_count || !sc->sample_to_chunk_sz ||
1269 (!sc->sample_size && !sc->sample_count))){
6282c5f4
BC
1270 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1271 st->index);
bd991df2
BC
1272 sc->sample_count = 0; //ignore track
1273 return 0;
1274 }
1275 if(!sc->time_rate)
1276 sc->time_rate=1;
1277 if(!sc->time_scale)
1278 sc->time_scale= c->time_scale;
1279 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1280
3f78a3a9
BC
1281 if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
1282 !st->codec->frame_size && sc->stts_count == 1)
bd991df2
BC
1283 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1284
1285 if(st->duration != AV_NOPTS_VALUE){
1286 assert(st->duration % sc->time_rate == 0);
1287 st->duration /= sc->time_rate;
1288 }
1289 sc->ffindex = st->index;
1290 mov_build_index(c, st);
1291
1292 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1293 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
9e81a0ce
BC
1294 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1295 st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
bd991df2
BC
1296 } else
1297 sc->pb = c->fc->pb;
1298
1299 switch (st->codec->codec_id) {
1300#ifdef CONFIG_H261_DECODER
1301 case CODEC_ID_H261:
1302#endif
1303#ifdef CONFIG_H263_DECODER
1304 case CODEC_ID_H263:
1305#endif
1306#ifdef CONFIG_MPEG4_DECODER
1307 case CODEC_ID_MPEG4:
1308#endif
1309 st->codec->width= 0; /* let decoder init width/height */
1310 st->codec->height= 0;
1311 break;
bd991df2
BC
1312#ifdef CONFIG_VORBIS_DECODER
1313 case CODEC_ID_VORBIS:
1314#endif
bd991df2
BC
1315 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1316 break;
1317 }
f9900374
BC
1318
1319 /* Do not need those anymore. */
1320 av_freep(&sc->chunk_offsets);
1321 av_freep(&sc->sample_to_chunk);
1322 av_freep(&sc->sample_sizes);
1323 av_freep(&sc->keyframes);
1324 av_freep(&sc->stts_data);
1325
bd991df2 1326 return 0;
5ca1d879
ZK
1327}
1328
d2ace376
BF
1329static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1330{
1331 uint16_t str_size = get_be16(pb); /* string length */;
1332
1333 get_be16(pb); /* skip language */
1334 get_buffer(pb, str, FFMIN(size, str_size));
1335}
1336
1337static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1338{
1339 uint64_t end = url_ftell(pb) + atom.size;
1340
1341 while (url_ftell(pb) + 8 < end) {
1342 uint32_t tag_size = get_be32(pb);
1343 uint32_t tag = get_le32(pb);
1344 uint64_t next = url_ftell(pb) + tag_size - 8;
1345
aaac6c29
BC
1346 if (next > end) // stop if tag_size is wrong
1347 break;
1348
d2ace376
BF
1349 switch (tag) {
1350 case MKTAG(0xa9,'n','a','m'):
1351 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1352 break;
1353 case MKTAG(0xa9,'w','r','t'):
1354 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1355 break;
1356 case MKTAG(0xa9,'c','p','y'):
1357 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1358 break;
1359 case MKTAG(0xa9,'i','n','f'):
1360 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1361 break;
1362 default:
1363 break;
1364 }
1365
1366 url_fseek(pb, next, SEEK_SET);
1367 }
1368
1369 return 0;
1370}
1371
5ca1d879
ZK
1372static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1373{
f444b977
BC
1374 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1375 int version = get_byte(pb);
5ca1d879 1376
23f08617 1377 get_be24(pb); /* flags */
5ca1d879
ZK
1378 /*
1379 MOV_TRACK_ENABLED 0x0001
1380 MOV_TRACK_IN_MOVIE 0x0002
1381 MOV_TRACK_IN_PREVIEW 0x0004
1382 MOV_TRACK_IN_POSTER 0x0008
1383 */
1384
1175561e
BC
1385 if (version == 1) {
1386 get_be64(pb);
1387 get_be64(pb);
1388 } else {
1389 get_be32(pb); /* creation time */
1390 get_be32(pb); /* modification time */
1391 }
5ca1d879
ZK
1392 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1393 get_be32(pb); /* reserved */
25c4950e 1394 st->start_time = 0; /* check */
117a9190
BC
1395 /* highlevel (considering edits) duration in movie timebase */
1396 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1397 get_be32(pb); /* reserved */
1398 get_be32(pb); /* reserved */
1399
1400 get_be16(pb); /* layer */
1401 get_be16(pb); /* alternate group */
1402 get_be16(pb); /* volume */
1403 get_be16(pb); /* reserved */
1404
1405 url_fskip(pb, 36); /* display matrix */
1406
1407 /* those are fixed-point */
c3daf8d8
BC
1408 get_be32(pb); /* track width */
1409 get_be32(pb); /* track height */
5ca1d879
ZK
1410
1411 return 0;
1412}
1413
61aedb0f
BC
1414static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1415{
1416 MOVFragment *frag = &c->fragment;
1417 MOVTrackExt *trex = NULL;
1418 int flags, track_id, i;
1419
1420 get_byte(pb); /* version */
1421 flags = get_be24(pb);
1422
1423 track_id = get_be32(pb);
1424 if (!track_id || track_id > c->fc->nb_streams)
1425 return -1;
1426 frag->track_id = track_id;
1427 for (i = 0; i < c->trex_count; i++)
1428 if (c->trex_data[i].track_id == frag->track_id) {
1429 trex = &c->trex_data[i];
1430 break;
1431 }
1432 if (!trex) {
1433 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1434 return -1;
1435 }
1436
1437 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1438 else frag->base_data_offset = frag->moof_offset;
1439 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1440 else frag->stsd_id = trex->stsd_id;
1441
1442 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1443 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1444 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1445 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1446 return 0;
1447}
1448
1449static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1450{
1451 MOVTrackExt *trex;
1452
1453 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1454 return -1;
1455 c->trex_data = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1456 if (!c->trex_data)
1457 return AVERROR(ENOMEM);
1458 trex = &c->trex_data[c->trex_count++];
1459 get_byte(pb); /* version */
1460 get_be24(pb); /* flags */
1461 trex->track_id = get_be32(pb);
1462 trex->stsd_id = get_be32(pb);
1463 trex->duration = get_be32(pb);
1464 trex->size = get_be32(pb);
1465 trex->flags = get_be32(pb);
1466 return 0;
1467}
1468
1469static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1470{
1471 MOVFragment *frag = &c->fragment;
44e43aab
BC
1472 AVStream *st;
1473 MOVStreamContext *sc;
61aedb0f
BC
1474 uint64_t offset;
1475 int64_t dts;
1476 int data_offset = 0;
1477 unsigned entries, first_sample_flags = frag->flags;
1478 int flags, distance, i;
1479
44e43aab
BC
1480 if (!frag->track_id || frag->track_id > c->fc->nb_streams)
1481 return -1;
1482 st = c->fc->streams[frag->track_id-1];
1483 sc = st->priv_data;
61aedb0f
BC
1484 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1485 return 0;
61aedb0f
BC
1486 get_byte(pb); /* version */
1487 flags = get_be24(pb);
1488 entries = get_be32(pb);
1489 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1490 if (flags & 0x001) data_offset = get_be32(pb);
1491 if (flags & 0x004) first_sample_flags = get_be32(pb);
1492 if (flags & 0x800) {
1493 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1494 return -1;
1495 sc->ctts_data = av_realloc(sc->ctts_data,
1496 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1497 if (!sc->ctts_data)
1498 return AVERROR(ENOMEM);
1499 }
1500 dts = st->duration;
1501 offset = frag->base_data_offset + data_offset;
1502 distance = 0;
1503 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1504 for (i = 0; i < entries; i++) {
1505 unsigned sample_size = frag->size;
1506 int sample_flags = i ? frag->flags : first_sample_flags;
1507 unsigned sample_duration = frag->duration;
1508 int keyframe;
1509
1510 if (flags & 0x100) sample_duration = get_be32(pb);
1511 if (flags & 0x200) sample_size = get_be32(pb);
1512 if (flags & 0x400) sample_flags = get_be32(pb);
1513 if (flags & 0x800) {
1514 sc->ctts_data[sc->ctts_count].count = 1;
1515 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1516 sc->ctts_count++;
1517 }
1518 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1519 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1520 distance = 0;
1521 av_add_index_entry(st, offset, dts, sample_size, distance,
1522 keyframe ? AVINDEX_KEYFRAME : 0);
1523 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1524 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1525 offset, dts, sample_size, distance, keyframe);
1526 distance++;
1527 assert(sample_duration % sc->time_rate == 0);
1528 dts += sample_duration / sc->time_rate;
1529 offset += sample_size;
1530 }
1531 frag->moof_offset = offset;
1532 sc->sample_count = st->nb_index_entries;
1533 st->duration = dts;
1534 return 0;
1535}
1536
5ca1d879
ZK
1537/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1538/* like the files created with Adobe Premiere 5.0, for samples see */
1539/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1540static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1541{
1542 int err;
5ca1d879 1543
5ca1d879
ZK
1544 if (atom.size < 8)
1545 return 0; /* continue */
1546 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1547 url_fskip(pb, atom.size - 4);
1548 return 0;
1549 }
1550 atom.type = get_le32(pb);
1551 atom.offset += 8;
1552 atom.size -= 8;
1c126b4f 1553 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
1554 url_fskip(pb, atom.size);
1555 return 0;
1556 }
1557 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
1558 return err;
1559}
1560
5ca1d879 1561static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1562{
d966b2f0 1563#ifdef CONFIG_ZLIB
0147f198 1564 ByteIOContext ctx;
b6a17df4
ZK
1565 uint8_t *cmov_data;
1566 uint8_t *moov_data; /* uncompressed data */
0147f198 1567 long cmov_len, moov_len;
6f04eb1e 1568 int ret = -1;
b6a17df4 1569
0147f198 1570 get_be32(pb); /* dcom atom */
1c126b4f 1571 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 1572 return -1;
1c126b4f 1573 if (get_le32(pb) != MKTAG('z','l','i','b')) {
4e5ef14f 1574 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
1575 return -1;
1576 }
1577 get_be32(pb); /* cmvd atom */
1c126b4f 1578 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
1579 return -1;
1580 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1581 cmov_len = atom.size - 6 * 4;
5cd62665 1582
9a630c25 1583 cmov_data = av_malloc(cmov_len);
0147f198
FR
1584 if (!cmov_data)
1585 return -1;
9a630c25 1586 moov_data = av_malloc(moov_len);
0147f198
FR
1587 if (!moov_data) {
1588 av_free(cmov_data);
1589 return -1;
1590 }
1591 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1592 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 1593 goto free_and_return;
942f3bb5 1594 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 1595 goto free_and_return;
1c126b4f 1596 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
1597 atom.offset = 0;
1598 atom.size = moov_len;
9ed83b0a 1599#ifdef DEBUG
dbb4f00a 1600// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 1601#endif
5ca1d879 1602 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 1603free_and_return:
0147f198
FR
1604 av_free(moov_data);
1605 av_free(cmov_data);
1606 return ret;
d966b2f0
BC
1607#else
1608 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1609 return -1;
0147f198 1610#endif
d966b2f0 1611}
0147f198 1612
baf25c9d
GC
1613/* edit list atom */
1614static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1615{
7c622eed 1616 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
e0977c80
BC
1617 int i, edit_count;
1618
1619 get_byte(pb); /* version */
23f08617 1620 get_be24(pb); /* flags */
7c622eed 1621 edit_count= sc->edit_count = get_be32(pb); /* entries */
e0977c80
BC
1622
1623 for(i=0; i<edit_count; i++){
d435e520 1624 int time;
e0977c80 1625 get_be32(pb); /* Track duration */
d435e520 1626 time = get_be32(pb); /* Media time */
e0977c80 1627 get_be32(pb); /* Media rate */
d435e520
BC
1628 if (time != 0)
1629 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1630 "a/v desync might occur, patch welcome\n");
e0977c80 1631 }
7c622eed 1632 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
e0977c80 1633 return 0;
baf25c9d
GC
1634}
1635
6cea494e 1636static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 1637{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f
BC
1638{ MKTAG('c','o','6','4'), mov_read_stco },
1639{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1640{ MKTAG('d','i','n','f'), mov_read_default },
1641{ MKTAG('d','r','e','f'), mov_read_dref },
1642{ MKTAG('e','d','t','s'), mov_read_default },
1643{ MKTAG('e','l','s','t'), mov_read_elst },
1644{ MKTAG('e','n','d','a'), mov_read_enda },
1645{ MKTAG('f','i','e','l'), mov_read_extradata },
1646{ MKTAG('f','t','y','p'), mov_read_ftyp },
1647{ MKTAG('g','l','b','l'), mov_read_glbl },
1648{ MKTAG('h','d','l','r'), mov_read_hdlr },
1649{ MKTAG('j','p','2','h'), mov_read_extradata },
1650{ MKTAG('m','d','a','t'), mov_read_mdat },
1651{ MKTAG('m','d','h','d'), mov_read_mdhd },
1652{ MKTAG('m','d','i','a'), mov_read_default },
1653{ MKTAG('m','i','n','f'), mov_read_default },
1654{ MKTAG('m','o','o','f'), mov_read_moof },
1655{ MKTAG('m','o','o','v'), mov_read_moov },
1656{ MKTAG('m','v','e','x'), mov_read_default },
1657{ MKTAG('m','v','h','d'), mov_read_mvhd },
1658{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1659{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1660{ MKTAG('a','v','c','C'), mov_read_glbl },
1661{ MKTAG('s','t','b','l'), mov_read_default },
1662{ MKTAG('s','t','c','o'), mov_read_stco },
1663{ MKTAG('s','t','s','c'), mov_read_stsc },
1664{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
1665{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
1666{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
1667{ MKTAG('s','t','t','s'), mov_read_stts },
1668{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
1669{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
1670{ MKTAG('t','r','a','k'), mov_read_trak },
1671{ MKTAG('t','r','a','f'), mov_read_default },
1672{ MKTAG('t','r','e','x'), mov_read_trex },
1673{ MKTAG('t','r','u','n'), mov_read_trun },
1674{ MKTAG('u','d','t','a'), mov_read_udta },
1675{ MKTAG('w','a','v','e'), mov_read_wave },
1676{ MKTAG('e','s','d','s'), mov_read_esds },
1677{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
1678{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 1679{ 0, NULL }
6cea494e
ZK
1680};
1681
c9a65ca8
FB
1682static int mov_probe(AVProbeData *p)
1683{
0e7eed09
FB
1684 unsigned int offset;
1685 uint32_t tag;
2497479f 1686 int score = 0;
3ffe3793 1687
c9a65ca8 1688 /* check file header */
0e7eed09
FB
1689 offset = 0;
1690 for(;;) {
1691 /* ignore invalid offset */
1692 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 1693 return score;
fead30d4 1694 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 1695 switch(tag) {
2497479f 1696 /* check for obvious tags */
1c126b4f
BC
1697 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1698 case MKTAG('m','o','o','v'):
1699 case MKTAG('m','d','a','t'):
1700 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1701 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 1702 case MKTAG('f','t','y','p'):
3ffe3793 1703 return AVPROBE_SCORE_MAX;
2497479f 1704 /* those are more common words, so rate then a bit less */
1c126b4f
BC
1705 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1706 case MKTAG('w','i','d','e'):
1707 case MKTAG('f','r','e','e'):
1708 case MKTAG('j','u','n','k'):
1709 case MKTAG('p','i','c','t'):
2497479f 1710 return AVPROBE_SCORE_MAX - 5;
5469b788 1711 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
1712 case MKTAG('s','k','i','p'):
1713 case MKTAG('u','u','i','d'):
1714 case MKTAG('p','r','f','l'):
fead30d4 1715 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
1716 /* if we only find those cause probedata is too small at least rate them */
1717 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
1718 break;
1719 default:
1720 /* unrecognized tag */
2497479f 1721 return score;
0e7eed09 1722 }
3ffe3793 1723 }
2497479f 1724 return score;
c9a65ca8
FB
1725}
1726
a266644f 1727static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1728{
e4141433 1729 MOVContext *mov = s->priv_data;
899681cd 1730 ByteIOContext *pb = s->pb;
f9900374 1731 int err;
5ca1d879 1732 MOV_atom_t atom = { 0, 0, 0 };
6cea494e 1733
6cea494e 1734 mov->fc = s;
117a9190
BC
1735 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1736 if(!url_is_streamed(pb))
bb270c08 1737 atom.size = url_fsize(pb);
6cea494e 1738 else
fa22ca22 1739 atom.size = INT64_MAX;
6cea494e 1740
6cea494e 1741 /* check MOV header */
612b5cbb
BC
1742 if ((err = mov_read_default(mov, pb, atom)) < 0) {
1743 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
1744 return err;
1745 }
1746 if (!mov->found_moov) {
1747 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 1748 return -1;
6cea494e 1749 }
0265fe81 1750 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 1751
6cea494e
ZK
1752 return 0;
1753}
1754
a266644f 1755static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e 1756{
b72708f8
BC
1757 MOVContext *mov = s->priv_data;
1758 MOVStreamContext *sc = 0;
1759 AVIndexEntry *sample = 0;
86d8602f 1760 int64_t best_dts = INT64_MAX;
b72708f8 1761 int i;
433aeb62 1762 retry:
11f16b66 1763 for (i = 0; i < s->nb_streams; i++) {
7c622eed
BC
1764 AVStream *st = s->streams[i];
1765 MOVStreamContext *msc = st->priv_data;
221e21b7 1766 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
7c622eed 1767 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
29c90869
BC
1768 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1769 AV_TIME_BASE, msc->time_scale);
1c02d96f 1770 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
1771 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1772 (!url_is_streamed(s->pb) &&
221e21b7 1773 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 1774 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 1775 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
1776 sample = current_sample;
1777 best_dts = dts;
1778 sc = msc;
86d8602f 1779 }
6cea494e 1780 }
6cea494e 1781 }
433aeb62
BC
1782 if (!sample) {
1783 mov->found_mdat = 0;
1784 if (!url_is_streamed(s->pb) ||
1785 mov_read_default(mov, s->pb, (MOV_atom_t){ 0, 0, INT64_MAX }) < 0 ||
1786 url_feof(s->pb))
1787 return -1;
1788 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
1789 goto retry;
1790 }
b72708f8
BC
1791 /* must be done just before reading, to avoid infinite loop on sample */
1792 sc->current_sample++;
221e21b7 1793 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
29c90869
BC
1794 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1795 sc->ffindex, sample->pos);
bb270c08 1796 return -1;
6cea494e 1797 }
221e21b7 1798 av_get_packet(sc->pb, pkt, sample->size);
312954f0 1799#ifdef CONFIG_DV_DEMUXER
56ea717b
BC
1800 if (mov->dv_demux && sc->dv_audio_container) {
1801 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1802 av_free(pkt->data);
300aa2b0
BC
1803 pkt->size = 0;
1804 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1805 return -1;
56ea717b 1806 }
312954f0 1807#endif
b72708f8
BC
1808 pkt->stream_index = sc->ffindex;
1809 pkt->dts = sample->timestamp;
1810 if (sc->ctts_data) {
1811 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1812 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1813 /* update ctts context */
1814 sc->sample_to_ctime_sample++;
29c90869
BC
1815 if (sc->sample_to_ctime_index < sc->ctts_count &&
1816 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
b72708f8
BC
1817 sc->sample_to_ctime_index++;
1818 sc->sample_to_ctime_sample = 0;
b565ea09 1819 }
b72708f8 1820 } else {
e8430214
HG
1821 AVStream *st = s->streams[sc->ffindex];
1822 int64_t next_dts = (sc->current_sample < sc->sample_count) ?
1823 st->index_entries[sc->current_sample].timestamp : st->duration;
1824 pkt->duration = next_dts - pkt->dts;
b72708f8 1825 pkt->pts = pkt->dts;
b565ea09 1826 }
b72708f8
BC
1827 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1828 pkt->pos = sample->pos;
29c90869
BC
1829 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1830 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
1831 return 0;
1832}
3ffe3793 1833
b72708f8
BC
1834static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1835{
1836 MOVStreamContext *sc = st->priv_data;
1837 int sample, time_sample;
1838 int i;
115329f1 1839
b72708f8 1840 sample = av_index_search_timestamp(st, timestamp, flags);
318c5e05 1841 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
1842 if (sample < 0) /* not sure what to do */
1843 return -1;
1844 sc->current_sample = sample;
1c02d96f 1845 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
1846 /* adjust ctts index */
1847 if (sc->ctts_data) {
1848 time_sample = 0;
1849 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
1850 int next = time_sample + sc->ctts_data[i].count;
1851 if (next > sc->current_sample) {
b72708f8 1852 sc->sample_to_ctime_index = i;
54a5c719 1853 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
b72708f8 1854 break;
115329f1 1855 }
54a5c719 1856 time_sample = next;
247d56f5 1857 }
247d56f5 1858 }
b72708f8 1859 return sample;
6cea494e
ZK
1860}
1861
961e0ccd 1862static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 1863{
b72708f8
BC
1864 AVStream *st;
1865 int64_t seek_timestamp, timestamp;
1866 int sample;
1867 int i;
baf25c9d 1868
b72708f8 1869 if (stream_index >= s->nb_streams)
baf25c9d 1870 return -1;
baf25c9d 1871
b72708f8
BC
1872 st = s->streams[stream_index];
1873 sample = mov_seek_stream(st, sample_time, flags);
1874 if (sample < 0)
baf25c9d 1875 return -1;
baf25c9d 1876
b72708f8
BC
1877 /* adjust seek timestamp to found sample timestamp */
1878 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 1879
b72708f8
BC
1880 for (i = 0; i < s->nb_streams; i++) {
1881 st = s->streams[i];
1882 if (stream_index == i || st->discard == AVDISCARD_ALL)
1883 continue;
baf25c9d 1884
b72708f8
BC
1885 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1886 mov_seek_stream(st, timestamp, flags);
115329f1 1887 }
baf25c9d
GC
1888 return 0;
1889}
baf25c9d 1890
a266644f 1891static int mov_read_close(AVFormatContext *s)
6cea494e 1892{
221e21b7 1893 int i, j;
e4141433 1894 MOVContext *mov = s->priv_data;
11f16b66 1895 for(i=0; i<s->nb_streams; i++) {
7c622eed
BC
1896 MOVStreamContext *sc = s->streams[i]->priv_data;
1897 av_freep(&sc->ctts_data);
221e21b7
BC
1898 for (j=0; j<sc->drefs_count; j++)
1899 av_freep(&sc->drefs[j].path);
1900 av_freep(&sc->drefs);
1901 if (sc->pb && sc->pb != s->pb)
1902 url_fclose(sc->pb);
4440b118 1903 }
b60c0454
BC
1904 if(mov->dv_demux){
1905 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1906 av_freep(&mov->dv_fctx->streams[i]->codec);
1907 av_freep(&mov->dv_fctx->streams[i]);
1908 }
1909 av_freep(&mov->dv_fctx);
1910 av_freep(&mov->dv_demux);
1911 }
61aedb0f 1912 av_freep(&mov->trex_data);
6cea494e
ZK
1913 return 0;
1914}
1915
ff70e601 1916AVInputFormat mov_demuxer = {
fc5188f3 1917 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 1918 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
1919 sizeof(MOVContext),
1920 mov_probe,
6cea494e
ZK
1921 mov_read_header,
1922 mov_read_packet,
1923 mov_read_close,
baf25c9d 1924 mov_read_seek,
6cea494e 1925};