0d2ddce733571ceef6f37260e5d4ac16fbd9c98d
[libav.git] / libavformat / mov.c
1 /*
2 * MOV decoder.
3 * Copyright (c) 2001 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 #include <limits.h>
21
22 #include "avformat.h"
23 #include "avi.h"
24
25 #ifdef CONFIG_ZLIB
26 #include <zlib.h>
27 #endif
28
29 /*
30 * First version by Francois Revol revol@free.fr
31 * Seek function by Gael Chardon gael.dev@4now.net
32 *
33 * Features and limitations:
34 * - reads most of the QT files I have (at least the structure),
35 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
36 * FIXED, Francois Revol, 07/17/2002
37 * - ffmpeg has nearly none of the usual QuickTime codecs,
38 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
39 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
40 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
41 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
42 * http://mpeg.telecomitalialab.com/faq.htm
43 * - the code is quite ugly... maybe I won't do it recursive next time :-)
44 * - seek is not supported with files that contain edit list
45 *
46 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47 * when coding this :) (it's a writer anyway)
48 *
49 * Reference documents:
50 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
51 * Apple:
52 * http://developer.apple.com/documentation/QuickTime/QTFF/
53 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
54 * QuickTime is a trademark of Apple (AFAIK :))
55 */
56
57 //#define DEBUG
58 #ifdef DEBUG
59 #include <stdio.h>
60 #include <fcntl.h>
61 #endif
62
63 #include "qtpalette.h"
64
65
66 /* Allows seeking (MOV_SPLIT_CHUNKS should also be defined) */
67 #define MOV_SEEK
68
69 /* allows chunk splitting - should work now... */
70 /* in case you can't read a file, try commenting */
71 #define MOV_SPLIT_CHUNKS
72
73 /* Special handling for movies created with Minolta Dimaxe Xi*/
74 /* this fix should not interfere with other .mov files, but just in case*/
75 #define MOV_MINOLTA_FIX
76
77 /* some streams in QT (and in MP4 mostly) aren't either video nor audio */
78 /* so we first list them as this, then clean up the list of streams we give back, */
79 /* getting rid of these */
80 #define CODEC_TYPE_MOV_OTHER (enum CodecType) 2
81
82 static const CodecTag mov_video_tags[] = {
83 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
84 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
85 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
86 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
87 /* Graphics */
88 /* Animation */
89 /* Apple video */
90 /* Kodak Photo CD */
91 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
92 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
93 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
94 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
95 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
96 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
97 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
98 /* Sorenson video */
99 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
100 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
101 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
102 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
103 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
104 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
105 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
106 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
107 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
108 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
111 /* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
112 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
113 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
114 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
115 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
116 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
117 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
118 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
119 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
120 { CODEC_ID_NONE, 0 },
121 };
122
123 static const CodecTag mov_audio_tags[] = {
124 /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
125 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
126 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
127 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
128 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
129 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
130 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
131 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
132 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
133 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
134
135 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
136 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
137 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
138 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
139 /* MP4 tags */
140 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
141 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
142 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
143 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
144 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
145 { CODEC_ID_NONE, 0 },
146 };
147
148 /* the QuickTime file format is quite convoluted...
149 * it has lots of index tables, each indexing something in another one...
150 * Here we just use what is needed to read the chunks
151 */
152
153 typedef struct MOV_sample_to_chunk_tbl {
154 long first;
155 long count;
156 long id;
157 } MOV_sample_to_chunk_tbl;
158
159 typedef struct {
160 uint32_t type;
161 int64_t offset;
162 int64_t size; /* total size (excluding the size and type fields) */
163 } MOV_atom_t;
164
165 typedef struct {
166 int seed;
167 int flags;
168 int size;
169 void* clrs;
170 } MOV_ctab_t;
171
172 typedef struct {
173 uint8_t version;
174 uint32_t flags; // 24bit
175
176 /* 0x03 ESDescrTag */
177 uint16_t es_id;
178 #define MP4ODescrTag 0x01
179 #define MP4IODescrTag 0x02
180 #define MP4ESDescrTag 0x03
181 #define MP4DecConfigDescrTag 0x04
182 #define MP4DecSpecificDescrTag 0x05
183 #define MP4SLConfigDescrTag 0x06
184 #define MP4ContentIdDescrTag 0x07
185 #define MP4SupplContentIdDescrTag 0x08
186 #define MP4IPIPtrDescrTag 0x09
187 #define MP4IPMPPtrDescrTag 0x0A
188 #define MP4IPMPDescrTag 0x0B
189 #define MP4RegistrationDescrTag 0x0D
190 #define MP4ESIDIncDescrTag 0x0E
191 #define MP4ESIDRefDescrTag 0x0F
192 #define MP4FileIODescrTag 0x10
193 #define MP4FileODescrTag 0x11
194 #define MP4ExtProfileLevelDescrTag 0x13
195 #define MP4ExtDescrTagsStart 0x80
196 #define MP4ExtDescrTagsEnd 0xFE
197 uint8_t stream_priority;
198
199 /* 0x04 DecConfigDescrTag */
200 uint8_t object_type_id;
201 uint8_t stream_type;
202 /* XXX: really streamType is
203 * only 6bit, followed by:
204 * 1bit upStream
205 * 1bit reserved
206 */
207 uint32_t buffer_size_db; // 24
208 uint32_t max_bitrate;
209 uint32_t avg_bitrate;
210
211 /* 0x05 DecSpecificDescrTag */
212 uint8_t decoder_cfg_len;
213 uint8_t *decoder_cfg;
214
215 /* 0x06 SLConfigDescrTag */
216 uint8_t sl_config_len;
217 uint8_t *sl_config;
218 } MOV_esds_t;
219
220 struct MOVParseTableEntry;
221
222 typedef struct MOVStreamContext {
223 int ffindex; /* the ffmpeg stream id */
224 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
225 long next_chunk;
226 long chunk_count;
227 int64_t *chunk_offsets;
228 int32_t stts_count;
229 uint64_t *stts_data; /* concatenated data from the time-to-sample atom (count|duration) */
230 int32_t edit_count; /* number of 'edit' (elst atom) */
231 long sample_to_chunk_sz;
232 MOV_sample_to_chunk_tbl *sample_to_chunk;
233 long sample_to_chunk_index;
234 int sample_to_time_index;
235 long sample_to_time_sample;
236 uint64_t sample_to_time_time;
237 long sample_size;
238 long sample_count;
239 long *sample_sizes;
240 long keyframe_count;
241 long *keyframes;
242 int time_scale;
243 long current_sample;
244 long left_in_chunk; /* how many samples before next chunk */
245 /* specific MPEG4 header which is added at the beginning of the stream */
246 unsigned int header_len;
247 uint8_t *header_data;
248 MOV_esds_t esds;
249 } MOVStreamContext;
250
251 typedef struct MOVContext {
252 int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
253 AVFormatContext *fc;
254 int time_scale;
255 int duration; /* duration of the longest track */
256 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
257 int found_mdat; /* we suppose we have enough data to read the file */
258 int64_t mdat_size;
259 int64_t mdat_offset;
260 int total_streams;
261 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
262 * but we need the info to be able to skip data from those streams in the 'mdat' section
263 */
264 MOVStreamContext *streams[MAX_STREAMS];
265
266 int64_t next_chunk_offset;
267 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
268 int ctab_size;
269 MOV_ctab_t **ctab; /* color tables */
270 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
271 /* NOTE: for recursion save to/ restore from local variable! */
272
273 AVPaletteControl palette_control;
274 } MOVContext;
275
276
277 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
278
279 /* those functions parse an atom */
280 /* return code:
281 1: found what I wanted, exit
282 0: continue to parse next atom
283 -1: error occured, exit
284 */
285 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
286
287 /* links atom IDs to parse functions */
288 typedef struct MOVParseTableEntry {
289 uint32_t type;
290 mov_parse_function func;
291 } MOVParseTableEntry;
292
293 #ifdef DEBUG
294 /*
295 * XXX: static sux, even more in a multithreaded environment...
296 * Avoid them. This is here just to help debugging.
297 */
298 static int debug_indent = 0;
299 void print_atom(const char *str, MOV_atom_t atom)
300 {
301 unsigned int tag, i;
302 tag = (unsigned int) atom.type;
303 i=debug_indent;
304 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
305 while(i--)
306 av_log(NULL, AV_LOG_DEBUG, "|");
307 av_log(NULL, AV_LOG_DEBUG, "parse:");
308 av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
309 str, tag & 0xff,
310 (tag >> 8) & 0xff,
311 (tag >> 16) & 0xff,
312 (tag >> 24) & 0xff,
313 (unsigned int)atom.offset,
314 (unsigned int)atom.size);
315 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
316 }
317 #else
318 #define print_atom(a,b)
319 #endif
320
321
322 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
323 {
324 print_atom("leaf", atom);
325
326 if (atom.size>1)
327 url_fskip(pb, atom.size);
328 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
329 return 0;
330 }
331
332 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
333 {
334 int64_t total_size = 0;
335 MOV_atom_t a;
336 int i;
337 int err = 0;
338
339 #ifdef DEBUG
340 print_atom("default", atom);
341 debug_indent++;
342 #endif
343
344 a.offset = atom.offset;
345
346 if (atom.size < 0)
347 atom.size = 0x7fffffffffffffffLL;
348 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
349 a.size = atom.size;
350 a.type=0L;
351 if(atom.size >= 8) {
352 a.size = get_be32(pb);
353 a.type = get_le32(pb);
354 }
355 total_size += 8;
356 a.offset += 8;
357 //av_log(NULL, AV_LOG_DEBUG, "type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
358 if (a.size == 1) { /* 64 bit extended size */
359 a.size = get_be64(pb) - 8;
360 a.offset += 8;
361 total_size += 8;
362 }
363 if (a.size == 0) {
364 a.size = atom.size - total_size;
365 if (a.size <= 8)
366 break;
367 }
368 for (i = 0; c->parse_table[i].type != 0L
369 && c->parse_table[i].type != a.type; i++)
370 /* empty */;
371
372 a.size -= 8;
373
374 if(a.size < 0)
375 break;
376
377 // av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
378 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
379 // url_seek(pb, atom.offset+atom.size, SEEK_SET);
380 #ifdef DEBUG
381 print_atom("unknown", a);
382 #endif
383 url_fskip(pb, a.size);
384 } else {
385 #ifdef DEBUG
386 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
387 //print_atom(b, type, offset, size);
388 #endif
389 err = (c->parse_table[i].func)(c, pb, a);
390 }
391
392 a.offset += a.size;
393 total_size += a.size;
394 }
395
396 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
397 //av_log(NULL, AV_LOG_DEBUG, "RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
398 url_fskip(pb, atom.size - total_size);
399 }
400
401 #ifdef DEBUG
402 debug_indent--;
403 #endif
404 return err;
405 }
406
407 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
408 {
409 unsigned int len;
410 MOV_ctab_t *t;
411 #if 1
412 url_fskip(pb, atom.size); // for now
413 #else
414 VERY VERY BROKEN, NEVER execute this, needs rewrite
415 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
416 t = c->ctab[c->ctab_size];
417 t->seed = get_be32(pb);
418 t->flags = get_be16(pb);
419 t->size = get_be16(pb) + 1;
420 len = 2 * t->size * 4;
421 if (len > 0) {
422 t->clrs = av_malloc(len); // 16bit A R G B
423 if (t->clrs)
424 get_buffer(pb, t->clrs, len);
425 }
426 #endif
427
428 return 0;
429 }
430
431 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
432 {
433 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
434 int len = 0;
435 uint32_t type;
436 uint32_t ctype;
437
438 print_atom("hdlr", atom);
439
440 get_byte(pb); /* version */
441 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
442
443 /* component type */
444 ctype = get_le32(pb);
445 type = get_le32(pb); /* component subtype */
446
447 #ifdef DEBUG
448 av_log(NULL, AV_LOG_DEBUG, "ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
449 av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
450 #endif
451 #ifdef DEBUG
452 /* XXX: yeah this is ugly... */
453 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
454 if(type == MKTAG('v', 'i', 'd', 'e'))
455 puts("hdlr: vide");
456 else if(type == MKTAG('s', 'o', 'u', 'n'))
457 puts("hdlr: soun");
458 } else if(ctype == 0) { /* MP4 */
459 if(type == MKTAG('v', 'i', 'd', 'e'))
460 puts("hdlr: vide");
461 else if(type == MKTAG('s', 'o', 'u', 'n'))
462 puts("hdlr: soun");
463 else if(type == MKTAG('o', 'd', 's', 'm'))
464 puts("hdlr: odsm");
465 else if(type == MKTAG('s', 'd', 's', 'm'))
466 puts("hdlr: sdsm");
467 } else puts("hdlr: meta");
468 #endif
469
470 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
471 /* helps parsing the string hereafter... */
472 c->mp4 = 0;
473 if(type == MKTAG('v', 'i', 'd', 'e'))
474 st->codec.codec_type = CODEC_TYPE_VIDEO;
475 else if(type == MKTAG('s', 'o', 'u', 'n'))
476 st->codec.codec_type = CODEC_TYPE_AUDIO;
477 } else if(ctype == 0) { /* MP4 */
478 /* helps parsing the string hereafter... */
479 c->mp4 = 1;
480 if(type == MKTAG('v', 'i', 'd', 'e'))
481 st->codec.codec_type = CODEC_TYPE_VIDEO;
482 else if(type == MKTAG('s', 'o', 'u', 'n'))
483 st->codec.codec_type = CODEC_TYPE_AUDIO;
484 }
485 get_be32(pb); /* component manufacture */
486 get_be32(pb); /* component flags */
487 get_be32(pb); /* component flags mask */
488
489 if(atom.size <= 24)
490 return 0; /* nothing left to read */
491 /* XXX: MP4 uses a C string, not a pascal one */
492 /* component name */
493
494 if(c->mp4) {
495 /* .mp4: C string */
496 while(get_byte(pb) && (++len < (atom.size - 24)));
497 } else {
498 /* .mov: PASCAL string */
499 #ifdef DEBUG
500 char* buf;
501 #endif
502 len = get_byte(pb);
503 #ifdef DEBUG
504 buf = (uint8_t*) av_malloc(len+1);
505 if (buf) {
506 get_buffer(pb, buf, len);
507 buf[len] = '\0';
508 av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
509 av_free(buf);
510 } else
511 #endif
512 url_fskip(pb, len);
513 }
514
515 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
516 return 0;
517 }
518
519 static int mov_mp4_read_descr_len(ByteIOContext *pb)
520 {
521 int len = 0;
522 int count = 4;
523 while (count--) {
524 int c = get_byte(pb);
525 len = (len << 7) | (c & 0x7f);
526 if (!(c & 0x80))
527 break;
528 }
529 return len;
530 }
531
532 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
533 {
534 int len;
535 *tag = get_byte(pb);
536 len = mov_mp4_read_descr_len(pb);
537 #ifdef DEBUG
538 av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
539 #endif
540 return len;
541 }
542
543 static inline unsigned int get_be24(ByteIOContext *s)
544 {
545 unsigned int val;
546 val = get_byte(s) << 16;
547 val |= get_byte(s) << 8;
548 val |= get_byte(s);
549 return val;
550 }
551
552 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
553 {
554 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
555 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
556 int64_t start_pos = url_ftell(pb);
557 int tag, len;
558
559 print_atom("esds", atom);
560
561 /* Well, broken but suffisant for some MP4 streams */
562 get_be32(pb); /* version + flags */
563 len = mov_mp4_read_descr(pb, &tag);
564 if (tag == MP4ESDescrTag) {
565 get_be16(pb); /* ID */
566 get_byte(pb); /* priority */
567 } else
568 get_be16(pb); /* ID */
569
570 len = mov_mp4_read_descr(pb, &tag);
571 if (tag == MP4DecConfigDescrTag) {
572 sc->esds.object_type_id = get_byte(pb);
573 sc->esds.stream_type = get_byte(pb);
574 sc->esds.buffer_size_db = get_be24(pb);
575 sc->esds.max_bitrate = get_be32(pb);
576 sc->esds.avg_bitrate = get_be32(pb);
577
578 len = mov_mp4_read_descr(pb, &tag);
579 //av_log(NULL, AV_LOG_DEBUG, "LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
580 if (tag == MP4DecSpecificDescrTag) {
581 #ifdef DEBUG
582 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
583 #endif
584 st->codec.extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
585 if (st->codec.extradata) {
586 get_buffer(pb, st->codec.extradata, len);
587 st->codec.extradata_size = len;
588 }
589 }
590 }
591 /* in any case, skip garbage */
592 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
593 return 0;
594 }
595
596 /* this atom contains actual media data */
597 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
598 {
599 print_atom("mdat", atom);
600
601 if(atom.size == 0) /* wrong one (MP4) */
602 return 0;
603 c->found_mdat=1;
604 c->mdat_offset = atom.offset;
605 c->mdat_size = atom.size;
606 if(c->found_moov)
607 return 1; /* found both, just go */
608 url_fskip(pb, atom.size);
609 return 0; /* now go for moov */
610 }
611
612 /* this atom should contain all header atoms */
613 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
614 {
615 int err;
616
617 print_atom("moov", atom);
618
619 err = mov_read_default(c, pb, atom);
620 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
621 /* so we don't parse the whole file if over a network */
622 c->found_moov=1;
623 if(c->found_mdat)
624 return 1; /* found both, just go */
625 return 0; /* now go for mdat */
626 }
627
628
629 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
630 {
631 print_atom("mdhd", atom);
632
633 get_byte(pb); /* version */
634
635 get_byte(pb); get_byte(pb);
636 get_byte(pb); /* flags */
637
638 get_be32(pb); /* creation time */
639 get_be32(pb); /* modification time */
640
641 c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
642
643 #ifdef DEBUG
644 av_log(NULL, AV_LOG_DEBUG, "track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->time_scale); /* time scale */
645 #endif
646 get_be32(pb); /* duration */
647
648 get_be16(pb); /* language */
649 get_be16(pb); /* quality */
650
651 return 0;
652 }
653
654 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
655 {
656 print_atom("mvhd", atom);
657
658 get_byte(pb); /* version */
659 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
660
661 get_be32(pb); /* creation time */
662 get_be32(pb); /* modification time */
663 c->time_scale = get_be32(pb); /* time scale */
664 #ifdef DEBUG
665 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
666 #endif
667 c->duration = get_be32(pb); /* duration */
668 get_be32(pb); /* preferred scale */
669
670 get_be16(pb); /* preferred volume */
671
672 url_fskip(pb, 10); /* reserved */
673
674 url_fskip(pb, 36); /* display matrix */
675
676 get_be32(pb); /* preview time */
677 get_be32(pb); /* preview duration */
678 get_be32(pb); /* poster time */
679 get_be32(pb); /* selection time */
680 get_be32(pb); /* selection duration */
681 get_be32(pb); /* current time */
682 get_be32(pb); /* next track ID */
683
684 return 0;
685 }
686
687 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
688 {
689 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
690
691 if((uint64_t)atom.size > (1<<30))
692 return -1;
693
694 // currently SVQ3 decoder expect full STSD header - so let's fake it
695 // this should be fixed and just SMI header should be passed
696 av_free(st->codec.extradata);
697 st->codec.extradata_size = 0x5a + atom.size;
698 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
699
700 if (st->codec.extradata) {
701 strcpy(st->codec.extradata, "SVQ3"); // fake
702 get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
703 //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
704 } else
705 url_fskip(pb, atom.size);
706
707 return 0;
708 }
709
710 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
711 {
712 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
713
714 if((uint64_t)atom.size > (1<<30))
715 return -1;
716
717 av_free(st->codec.extradata);
718
719 st->codec.extradata_size = atom.size;
720 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
721
722 if (st->codec.extradata) {
723 get_buffer(pb, st->codec.extradata, atom.size);
724 } else
725 url_fskip(pb, atom.size);
726
727 return 0;
728 }
729
730 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
731 {
732 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
733 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
734 unsigned int i, entries;
735
736 print_atom("stco", atom);
737
738 get_byte(pb); /* version */
739 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
740
741 entries = get_be32(pb);
742
743 if(entries >= UINT_MAX/sizeof(int64_t))
744 return -1;
745
746 sc->chunk_count = entries;
747 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
748 if (!sc->chunk_offsets)
749 return -1;
750 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
751 for(i=0; i<entries; i++) {
752 sc->chunk_offsets[i] = get_be32(pb);
753 }
754 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
755 for(i=0; i<entries; i++) {
756 sc->chunk_offsets[i] = get_be64(pb);
757 }
758 } else
759 return -1;
760 #ifdef DEBUG
761 /*
762 for(i=0; i<entries; i++) {
763 av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
764 }
765 */
766 #endif
767 return 0;
768 }
769
770 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
771 {
772 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
773 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
774 int entries, frames_per_sample;
775 uint32_t format;
776 uint8_t codec_name[32];
777
778 /* for palette traversal */
779 int color_depth;
780 int color_start;
781 int color_count;
782 int color_end;
783 int color_index;
784 int color_dec;
785 int color_greyscale;
786 unsigned char *color_table;
787 int j;
788 unsigned char r, g, b;
789
790 print_atom("stsd", atom);
791
792 get_byte(pb); /* version */
793 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
794
795 entries = get_be32(pb);
796
797 while(entries--) { //Parsing Sample description table
798 enum CodecID id;
799 int size = get_be32(pb); /* size */
800 format = get_le32(pb); /* data format */
801
802 get_be32(pb); /* reserved */
803 get_be16(pb); /* reserved */
804 get_be16(pb); /* index */
805
806 /* for MPEG4: set codec type by looking for it */
807 id = codec_get_id(mov_video_tags, format);
808 if (id >= 0) {
809 AVCodec *codec;
810 codec = avcodec_find_decoder(id);
811 if (codec)
812 st->codec.codec_type = codec->type;
813 }
814 #ifdef DEBUG
815 av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
816 size,
817 (format >> 0) & 0xff,
818 (format >> 8) & 0xff,
819 (format >> 16) & 0xff,
820 (format >> 24) & 0xff,
821 st->codec.codec_type);
822 #endif
823 st->codec.codec_tag = format;
824 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
825 MOV_atom_t a = { 0, 0, 0 };
826 st->codec.codec_id = id;
827 get_be16(pb); /* version */
828 get_be16(pb); /* revision level */
829 get_be32(pb); /* vendor */
830 get_be32(pb); /* temporal quality */
831 get_be32(pb); /* spacial quality */
832 st->codec.width = get_be16(pb); /* width */
833 st->codec.height = get_be16(pb); /* height */
834 #if 1
835 if (st->codec.codec_id == CODEC_ID_MPEG4) {
836 /* in some MPEG4 the width/height are not correct, so
837 we ignore this info */
838 st->codec.width = 0;
839 st->codec.height = 0;
840 }
841 #endif
842 get_be32(pb); /* horiz resolution */
843 get_be32(pb); /* vert resolution */
844 get_be32(pb); /* data size, always 0 */
845 frames_per_sample = get_be16(pb); /* frames per samples */
846 #ifdef DEBUG
847 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
848 #endif
849 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
850 if (codec_name[0] <= 31) {
851 memcpy(st->codec.codec_name, &codec_name[1],codec_name[0]);
852 st->codec.codec_name[codec_name[0]] = 0;
853 }
854
855 st->codec.bits_per_sample = get_be16(pb); /* depth */
856 st->codec.color_table_id = get_be16(pb); /* colortable id */
857
858 /* These are set in mov_read_stts and might already be set!
859 st->codec.frame_rate = 25;
860 st->codec.frame_rate_base = 1;
861 */
862 size -= (16+8*4+2+32+2*2);
863 #if 0
864 while (size >= 8) {
865 MOV_atom_t a;
866 int64_t start_pos;
867
868 a.size = get_be32(pb);
869 a.type = get_le32(pb);
870 size -= 8;
871 #ifdef DEBUG
872 av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
873 (a.type >> 0) & 0xff,
874 (a.type >> 8) & 0xff,
875 (a.type >> 16) & 0xff,
876 (a.type >> 24) & 0xff,
877 a.size, size);
878 #endif
879 start_pos = url_ftell(pb);
880
881 switch(a.type) {
882 case MKTAG('e', 's', 'd', 's'):
883 {
884 int tag, len;
885 /* Well, broken but suffisant for some MP4 streams */
886 get_be32(pb); /* version + flags */
887 len = mov_mp4_read_descr(pb, &tag);
888 if (tag == 0x03) {
889 /* MP4ESDescrTag */
890 get_be16(pb); /* ID */
891 get_byte(pb); /* priority */
892 len = mov_mp4_read_descr(pb, &tag);
893 if (tag != 0x04)
894 goto fail;
895 /* MP4DecConfigDescrTag */
896 get_byte(pb); /* objectTypeId */
897 get_be32(pb); /* streamType + buffer size */
898 get_be32(pb); /* max bit rate */
899 get_be32(pb); /* avg bit rate */
900 len = mov_mp4_read_descr(pb, &tag);
901 if (tag != 0x05)
902 goto fail;
903 /* MP4DecSpecificDescrTag */
904 #ifdef DEBUG
905 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
906 #endif
907 sc->header_data = av_mallocz(len);
908 if (sc->header_data) {
909 get_buffer(pb, sc->header_data, len);
910 sc->header_len = len;
911 }
912 }
913 /* in any case, skip garbage */
914 }
915 break;
916 default:
917 break;
918 }
919 fail:
920 av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
921 if (atom.size > 8) {
922 url_fskip(pb, (atom.size - 8) -
923 ((url_ftell(pb) - start_pos)));
924 size -= atom.size - 8;
925 }
926 }
927 if (size > 0) {
928 /* unknown extension */
929 url_fskip(pb, size);
930 }
931 #else
932
933 /* figure out the palette situation */
934 color_depth = st->codec.bits_per_sample & 0x1F;
935 color_greyscale = st->codec.bits_per_sample & 0x20;
936
937 /* if the depth is 2, 4, or 8 bpp, file is palettized */
938 if ((color_depth == 2) || (color_depth == 4) ||
939 (color_depth == 8)) {
940
941 if (color_greyscale) {
942
943 /* compute the greyscale palette */
944 color_count = 1 << color_depth;
945 color_index = 255;
946 color_dec = 256 / (color_count - 1);
947 for (j = 0; j < color_count; j++) {
948 r = g = b = color_index;
949 c->palette_control.palette[j] =
950 (r << 16) | (g << 8) | (b);
951 color_index -= color_dec;
952 if (color_index < 0)
953 color_index = 0;
954 }
955
956 } else if (st->codec.color_table_id & 0x08) {
957
958 /* if flag bit 3 is set, use the default palette */
959 color_count = 1 << color_depth;
960 if (color_depth == 2)
961 color_table = ff_qt_default_palette_4;
962 else if (color_depth == 4)
963 color_table = ff_qt_default_palette_16;
964 else
965 color_table = ff_qt_default_palette_256;
966
967 for (j = 0; j < color_count; j++) {
968 r = color_table[j * 4 + 0];
969 g = color_table[j * 4 + 1];
970 b = color_table[j * 4 + 2];
971 c->palette_control.palette[j] =
972 (r << 16) | (g << 8) | (b);
973 }
974
975 } else {
976
977 /* load the palette from the file */
978 color_start = get_be32(pb);
979 color_count = get_be16(pb);
980 color_end = get_be16(pb);
981 for (j = color_start; j <= color_end; j++) {
982 /* each R, G, or B component is 16 bits;
983 * only use the top 8 bits; skip alpha bytes
984 * up front */
985 get_byte(pb);
986 get_byte(pb);
987 r = get_byte(pb);
988 get_byte(pb);
989 g = get_byte(pb);
990 get_byte(pb);
991 b = get_byte(pb);
992 get_byte(pb);
993 c->palette_control.palette[j] =
994 (r << 16) | (g << 8) | (b);
995 }
996 }
997
998 st->codec.palctrl = &c->palette_control;
999 st->codec.palctrl->palette_changed = 1;
1000 } else
1001 st->codec.palctrl = NULL;
1002
1003 a.size = size;
1004 mov_read_default(c, pb, a);
1005 #endif
1006 } else {
1007 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
1008 if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
1009 {
1010 #ifdef DEBUG
1011 av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
1012 #endif
1013 get_be32(pb);get_be32(pb); //Reserved_8
1014 get_be16(pb);//Reserved_2
1015 get_be16(pb);//Reserved_2
1016 get_be32(pb);//Reserved_4
1017 get_be16(pb);//TimeScale
1018 get_be16(pb);//Reserved_2
1019
1020 //AMRSpecificBox.(10 bytes)
1021
1022 get_be32(pb); //size
1023 get_be32(pb); //type=='damr'
1024 get_be32(pb); //vendor
1025 get_byte(pb); //decoder version
1026 get_be16(pb); //mode_set
1027 get_byte(pb); //mode_change_period
1028 get_byte(pb); //frames_per_sample
1029
1030 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
1031 if(st->codec.codec_id==CODEC_ID_AMR_NB)
1032 {
1033 st->codec.sample_rate=8000;
1034 st->codec.channels=1;
1035 }
1036 else //AMR-WB
1037 {
1038 st->codec.sample_rate=16000;
1039 st->codec.channels=1;
1040 }
1041 st->codec.bits_per_sample=16;
1042 st->codec.bit_rate=0; /*It is not possible to tell this before we have
1043 an audio frame and even then every frame can be different*/
1044 }
1045 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1046 {
1047 //This is some stuff for the hint track, lets ignore it!
1048 //Do some mp4 auto detect.
1049 c->mp4=1;
1050 size-=(16);
1051 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1052 }
1053 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1054 {
1055 /* Handle mp4 audio tag */
1056 get_be32(pb); /* version */
1057 get_be32(pb);
1058 st->codec.channels = get_be16(pb); /* channels */
1059 st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1060 get_be32(pb);
1061 st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
1062 get_be16(pb);
1063 c->mp4=1;
1064 {
1065 MOV_atom_t a = { format, url_ftell(pb), size - (20 + 20 + 8) };
1066 mov_read_default(c, pb, a);
1067 }
1068 /* Get correct sample rate from extradata */
1069 if(st->codec.extradata_size) {
1070 const int samplerate_table[] = {
1071 96000, 88200, 64000, 48000, 44100, 32000,
1072 24000, 22050, 16000, 12000, 11025, 8000,
1073 7350, 0, 0, 0
1074 };
1075 unsigned char *px = st->codec.extradata;
1076 // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1077 int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1078 st->codec.sample_rate = samplerate_table[samplerate_index];
1079 st->codec.channels = (px[1] >> 3) & 15;
1080 }
1081 }
1082 else if(size>=(16+20))
1083 {//16 bytes read, reading atleast 20 more
1084 uint16_t version;
1085 #ifdef DEBUG
1086 av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
1087 #endif
1088 version = get_be16(pb); /* version */
1089 get_be16(pb); /* revision level */
1090 get_be32(pb); /* vendor */
1091
1092 st->codec.channels = get_be16(pb); /* channel count */
1093 st->codec.bits_per_sample = get_be16(pb); /* sample size */
1094
1095 /* handle specific s8 codec */
1096 get_be16(pb); /* compression id = 0*/
1097 get_be16(pb); /* packet size = 0 */
1098
1099 st->codec.sample_rate = ((get_be32(pb) >> 16));
1100 //av_log(NULL, AV_LOG_DEBUG, "CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1101
1102 switch (st->codec.codec_id) {
1103 case CODEC_ID_PCM_S16BE:
1104 if (st->codec.bits_per_sample == 8)
1105 st->codec.codec_id = CODEC_ID_PCM_S8;
1106 /* fall */
1107 case CODEC_ID_PCM_U8:
1108 st->codec.bit_rate = st->codec.sample_rate * 8;
1109 break;
1110 default:
1111 ;
1112 }
1113
1114 //Read QT version 1 fields. In version 0 theese dont exist
1115 #ifdef DEBUG
1116 av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1117 av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
1118 #endif
1119 if((version==1) && size>=(16+20+16))
1120 {
1121 get_be32(pb); /* samples per packet */
1122 get_be32(pb); /* bytes per packet */
1123 get_be32(pb); /* bytes per frame */
1124 get_be32(pb); /* bytes per sample */
1125 if(size>(16+20+16))
1126 {
1127 //Optional, additional atom-based fields
1128 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1129 #ifdef DEBUG
1130 av_log(NULL, AV_LOG_DEBUG, "offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
1131 (format >> 0) & 0xff,
1132 (format >> 8) & 0xff,
1133 (format >> 16) & 0xff,
1134 (format >> 24) & 0xff);
1135 #endif
1136 mov_read_default(c, pb, a);
1137 }
1138 }
1139 else
1140 {
1141 //We should be down to 0 bytes here, but lets make sure.
1142 size-=(16+20);
1143 #ifdef DEBUG
1144 if(size>0)
1145 av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
1146 #endif
1147 url_fskip(pb, size);
1148 }
1149 }
1150 else
1151 {
1152 size-=16;
1153 //Unknown size, but lets do our best and skip the rest.
1154 #ifdef DEBUG
1155 av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
1156 #endif
1157 url_fskip(pb, size);
1158 }
1159 }
1160 }
1161
1162 return 0;
1163 }
1164
1165 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1166 {
1167 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1168 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1169 unsigned int i, entries;
1170
1171 print_atom("stsc", atom);
1172
1173 get_byte(pb); /* version */
1174 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1175
1176 entries = get_be32(pb);
1177
1178 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1179 return -1;
1180
1181 #ifdef DEBUG
1182 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1183 #endif
1184 sc->sample_to_chunk_sz = entries;
1185 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1186 if (!sc->sample_to_chunk)
1187 return -1;
1188 for(i=0; i<entries; i++) {
1189 sc->sample_to_chunk[i].first = get_be32(pb);
1190 sc->sample_to_chunk[i].count = get_be32(pb);
1191 sc->sample_to_chunk[i].id = get_be32(pb);
1192 #ifdef DEBUG
1193 /* av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1194 #endif
1195 }
1196 return 0;
1197 }
1198
1199 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1200 {
1201 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1202 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1203 unsigned int i, entries;
1204
1205 print_atom("stss", atom);
1206
1207 get_byte(pb); /* version */
1208 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1209
1210 entries = get_be32(pb);
1211
1212 if(entries >= UINT_MAX / sizeof(long))
1213 return -1;
1214
1215 sc->keyframe_count = entries;
1216 #ifdef DEBUG
1217 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1218 #endif
1219 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1220 if (!sc->keyframes)
1221 return -1;
1222 for(i=0; i<entries; i++) {
1223 sc->keyframes[i] = get_be32(pb);
1224 #ifdef DEBUG
1225 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1226 #endif
1227 }
1228 return 0;
1229 }
1230
1231 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1232 {
1233 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1234 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1235 unsigned int i, entries;
1236
1237 print_atom("stsz", atom);
1238
1239 get_byte(pb); /* version */
1240 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1241
1242 sc->sample_size = get_be32(pb);
1243 entries = get_be32(pb);
1244 if(entries >= UINT_MAX / sizeof(long))
1245 return -1;
1246
1247 sc->sample_count = entries;
1248 #ifdef DEBUG
1249 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1250 #endif
1251 if(sc->sample_size)
1252 return 0; /* there isn't any table following */
1253 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1254 if (!sc->sample_sizes)
1255 return -1;
1256 for(i=0; i<entries; i++) {
1257 sc->sample_sizes[i] = get_be32(pb);
1258 #ifdef DEBUG
1259 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1260 #endif
1261 }
1262 return 0;
1263 }
1264
1265 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1266 {
1267 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1268 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1269 unsigned int i, entries;
1270 int64_t duration=0;
1271 int64_t total_sample_count=0;
1272
1273 print_atom("stts", atom);
1274
1275 get_byte(pb); /* version */
1276 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1277 entries = get_be32(pb);
1278 if(entries >= UINT_MAX / sizeof(uint64_t))
1279 return -1;
1280
1281 c->streams[c->fc->nb_streams-1]->stts_count = entries;
1282 c->streams[c->fc->nb_streams-1]->stts_data = (uint64_t*) av_malloc(entries * sizeof(uint64_t));
1283
1284 #ifdef DEBUG
1285 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1286 #endif
1287 for(i=0; i<entries; i++) {
1288 int32_t sample_duration;
1289 int32_t sample_count;
1290
1291 sample_count=get_be32(pb);
1292 sample_duration = get_be32(pb);
1293 c->streams[c->fc->nb_streams - 1]->stts_data[i] = (uint64_t)sample_count<<32 | (uint64_t)sample_duration;
1294 #ifdef DEBUG
1295 av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1296 #endif
1297 duration+=sample_duration*sample_count;
1298 total_sample_count+=sample_count;
1299
1300 #if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1301
1302 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1303 st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1304 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1305 #ifdef DEBUG
1306 av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1307 #endif
1308 }
1309 #endif
1310 }
1311
1312 /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1313 if(duration>0)
1314 {
1315 av_reduce(
1316 &st->codec.frame_rate,
1317 &st->codec.frame_rate_base,
1318 c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
1319 duration,
1320 INT_MAX
1321 );
1322
1323 #ifdef DEBUG
1324 av_log(NULL, AV_LOG_DEBUG, "FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
1325 #endif
1326 }
1327 else
1328 {
1329 st->codec.frame_rate_base = 1;
1330 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1331 }
1332 return 0;
1333 }
1334
1335 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1336 {
1337 AVStream *st;
1338 MOVStreamContext *sc;
1339
1340 print_atom("trak", atom);
1341
1342 st = av_new_stream(c->fc, c->fc->nb_streams);
1343 if (!st) return -2;
1344 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1345 if (!sc) {
1346 av_free(st);
1347 return -1;
1348 }
1349
1350 sc->sample_to_chunk_index = -1;
1351 st->priv_data = sc;
1352 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1353 st->start_time = 0; /* XXX: check */
1354 st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1355 c->streams[c->fc->nb_streams-1] = sc;
1356
1357 return mov_read_default(c, pb, atom);
1358 }
1359
1360 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1361 {
1362 AVStream *st;
1363
1364 print_atom("tkhd", atom);
1365
1366 st = c->fc->streams[c->fc->nb_streams-1];
1367
1368 get_byte(pb); /* version */
1369
1370 get_byte(pb); get_byte(pb);
1371 get_byte(pb); /* flags */
1372 /*
1373 MOV_TRACK_ENABLED 0x0001
1374 MOV_TRACK_IN_MOVIE 0x0002
1375 MOV_TRACK_IN_PREVIEW 0x0004
1376 MOV_TRACK_IN_POSTER 0x0008
1377 */
1378
1379 get_be32(pb); /* creation time */
1380 get_be32(pb); /* modification time */
1381 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1382 get_be32(pb); /* reserved */
1383 st->start_time = 0; /* check */
1384 st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1385 get_be32(pb); /* reserved */
1386 get_be32(pb); /* reserved */
1387
1388 get_be16(pb); /* layer */
1389 get_be16(pb); /* alternate group */
1390 get_be16(pb); /* volume */
1391 get_be16(pb); /* reserved */
1392
1393 url_fskip(pb, 36); /* display matrix */
1394
1395 /* those are fixed-point */
1396 st->codec.width = get_be32(pb) >> 16; /* track width */
1397 st->codec.height = get_be32(pb) >> 16; /* track height */
1398
1399 return 0;
1400 }
1401
1402 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1403 /* like the files created with Adobe Premiere 5.0, for samples see */
1404 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1405 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1406 {
1407 int err;
1408
1409 #ifdef DEBUG
1410 print_atom("wide", atom);
1411 debug_indent++;
1412 #endif
1413 if (atom.size < 8)
1414 return 0; /* continue */
1415 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1416 url_fskip(pb, atom.size - 4);
1417 return 0;
1418 }
1419 atom.type = get_le32(pb);
1420 atom.offset += 8;
1421 atom.size -= 8;
1422 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1423 url_fskip(pb, atom.size);
1424 return 0;
1425 }
1426 err = mov_read_mdat(c, pb, atom);
1427 #ifdef DEBUG
1428 debug_indent--;
1429 #endif
1430 return err;
1431 }
1432
1433
1434 #ifdef CONFIG_ZLIB
1435 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1436 {
1437 return -1;
1438 }
1439
1440 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1441 {
1442 ByteIOContext ctx;
1443 uint8_t *cmov_data;
1444 uint8_t *moov_data; /* uncompressed data */
1445 long cmov_len, moov_len;
1446 int ret;
1447
1448 print_atom("cmov", atom);
1449
1450 get_be32(pb); /* dcom atom */
1451 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1452 return -1;
1453 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1454 av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
1455 return -1;
1456 }
1457 get_be32(pb); /* cmvd atom */
1458 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1459 return -1;
1460 moov_len = get_be32(pb); /* uncompressed size */
1461 cmov_len = atom.size - 6 * 4;
1462
1463 cmov_data = (uint8_t *) av_malloc(cmov_len);
1464 if (!cmov_data)
1465 return -1;
1466 moov_data = (uint8_t *) av_malloc(moov_len);
1467 if (!moov_data) {
1468 av_free(cmov_data);
1469 return -1;
1470 }
1471 get_buffer(pb, cmov_data, cmov_len);
1472 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1473 return -1;
1474 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1475 return -1;
1476 ctx.buf_end = ctx.buffer + moov_len;
1477 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1478 atom.offset = 0;
1479 atom.size = moov_len;
1480 #ifdef DEBUG
1481 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1482 #endif
1483 ret = mov_read_default(c, &ctx, atom);
1484 av_free(moov_data);
1485 av_free(cmov_data);
1486
1487 return ret;
1488 }
1489 #endif
1490
1491 /* edit list atom */
1492 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1493 {
1494 int i, edit_count;
1495 print_atom("elst", atom);
1496
1497 get_byte(pb); /* version */
1498 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1499 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1500
1501 for(i=0; i<edit_count; i++){
1502 get_be32(pb); /* Track duration */
1503 get_be32(pb); /* Media time */
1504 get_be32(pb); /* Media rate */
1505 }
1506 #ifdef DEBUG
1507 av_log(NULL, AV_LOG_DEBUG, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1508 #endif
1509 return 0;
1510 }
1511
1512 static const MOVParseTableEntry mov_default_parse_table[] = {
1513 /* mp4 atoms */
1514 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1515 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1516 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1517 { MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1518 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1519 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1520 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1521 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1522 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1523 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1524 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1525 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1526 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1527 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1528 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1529 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1530 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1531 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1532 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1533 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1534 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1535 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1536 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1537 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1538 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1539 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1540 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1541 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1542 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1543 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1544 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1545 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1546 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1547 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1548 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1549 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1550 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1551 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1552 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1553 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1554 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1555 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1556 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1557 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1558 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1559 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1560 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1561 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1562 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1563 /* extra mp4 */
1564 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1565 /* QT atoms */
1566 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1567 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1568 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1569 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1570 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1571 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1572 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1573 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1574 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1575 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1576 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1577 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1578 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1579 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1580 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1581 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1582 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1583 #ifdef CONFIG_ZLIB
1584 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1585 #else
1586 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1587 #endif
1588 { 0L, mov_read_leaf }
1589 };
1590
1591 static void mov_free_stream_context(MOVStreamContext *sc)
1592 {
1593 if(sc) {
1594 av_free(sc->chunk_offsets);
1595 av_free(sc->sample_to_chunk);
1596 av_free(sc->sample_sizes);
1597 av_free(sc->keyframes);
1598 av_free(sc->header_data);
1599 av_free(sc->stts_data);
1600 av_free(sc);
1601 }
1602 }
1603
1604 static inline uint32_t mov_to_tag(uint8_t *buf)
1605 {
1606 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1607 }
1608
1609 static inline uint32_t to_be32(uint8_t *buf)
1610 {
1611 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1612 }
1613
1614 /* XXX: is it sufficient ? */
1615 static int mov_probe(AVProbeData *p)
1616 {
1617 unsigned int offset;
1618 uint32_t tag;
1619
1620 /* check file header */
1621 if (p->buf_size <= 12)
1622 return 0;
1623 offset = 0;
1624 for(;;) {
1625 /* ignore invalid offset */
1626 if ((offset + 8) > (unsigned int)p->buf_size)
1627 return 0;
1628 tag = mov_to_tag(p->buf + offset + 4);
1629 switch(tag) {
1630 case MKTAG( 'm', 'o', 'o', 'v' ):
1631 case MKTAG( 'w', 'i', 'd', 'e' ):
1632 case MKTAG( 'f', 'r', 'e', 'e' ):
1633 case MKTAG( 'm', 'd', 'a', 't' ):
1634 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1635 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1636 return AVPROBE_SCORE_MAX;
1637 case MKTAG( 'f', 't', 'y', 'p' ):
1638 case MKTAG( 's', 'k', 'i', 'p' ):
1639 offset = to_be32(p->buf+offset) + offset;
1640 break;
1641 default:
1642 /* unrecognized tag */
1643 return 0;
1644 }
1645 }
1646 return 0;
1647 }
1648
1649 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1650 {
1651 MOVContext *mov = (MOVContext *) s->priv_data;
1652 ByteIOContext *pb = &s->pb;
1653 int i, j, nb, err;
1654 MOV_atom_t atom = { 0, 0, 0 };
1655
1656 mov->fc = s;
1657 mov->parse_table = mov_default_parse_table;
1658 #if 0
1659 /* XXX: I think we should auto detect */
1660 if(s->iformat->name[1] == 'p')
1661 mov->mp4 = 1;
1662 #endif
1663 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1664 atom.size = url_filesize(url_fileno(pb));
1665 else
1666 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1667
1668 #ifdef DEBUG
1669 av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
1670 #endif
1671
1672 /* check MOV header */
1673 err = mov_read_default(mov, pb, atom);
1674 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1675 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1676 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1677 return -1;
1678 }
1679 #ifdef DEBUG
1680 av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1681 #endif
1682 /* some cleanup : make sure we are on the mdat atom */
1683 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1684 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1685
1686 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1687
1688 #ifdef DEBUG
1689 av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
1690 #endif
1691
1692 #ifdef DEBUG
1693 av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
1694 #endif
1695 mov->total_streams = nb = s->nb_streams;
1696
1697 #if 1
1698 for(i=0; i<s->nb_streams;) {
1699 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1700 av_free(s->streams[i]);
1701 for(j=i+1; j<s->nb_streams; j++)
1702 s->streams[j-1] = s->streams[j];
1703 s->nb_streams--;
1704 } else
1705 i++;
1706 }
1707 for(i=0; i<s->nb_streams;i++) {
1708 MOVStreamContext *sc;
1709 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1710 sc->ffindex = i;
1711 sc->is_ff_stream = 1;
1712 }
1713 #endif
1714 #ifdef DEBUG
1715 av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
1716 #endif
1717 return 0;
1718 }
1719
1720 /* Yes, this is ugly... I didn't write the specs of QT :p */
1721 /* XXX:remove useless commented code sometime */
1722 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1723 {
1724 MOVContext *mov = (MOVContext *) s->priv_data;
1725 MOVStreamContext *sc;
1726 int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1727 int i, a, b, m;
1728 int size;
1729 int idx;
1730 size = 0x0FFFFFFF;
1731
1732 #ifdef MOV_SPLIT_CHUNKS
1733 if (mov->partial) {
1734 sc = mov->partial;
1735 idx = sc->sample_to_chunk_index;
1736
1737 if (idx < 0) return 0;
1738 #ifdef DEBUG
1739 fprintf(stderr, "sc[ffid %d]->sample_size = %d\n", sc->ffindex, sc->sample_size);
1740 #endif
1741 //size = sc->sample_sizes[sc->current_sample];
1742 // that ain't working...
1743 //size = (sc->sample_size)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1744 size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1745
1746 sc->current_sample++;
1747 sc->left_in_chunk--;
1748
1749 if (sc->left_in_chunk <= 0)
1750 mov->partial = 0;
1751 offset = mov->next_chunk_offset;
1752 /* extract the sample */
1753
1754 goto readchunk;
1755 }
1756 #endif
1757
1758 again:
1759 sc = 0;
1760 for(i=0; i<mov->total_streams; i++) {
1761 MOVStreamContext *msc = mov->streams[i];
1762 //av_log(NULL, AV_LOG_DEBUG, "MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1763 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1764 && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1765 sc = msc;
1766 offset = msc->chunk_offsets[msc->next_chunk];
1767 //av_log(NULL, AV_LOG_DEBUG, "SELETED %Ld i:%d\n", offset, i);
1768 }
1769 }
1770 if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1771 return -1;
1772
1773 sc->next_chunk++;
1774
1775 if(mov->next_chunk_offset < offset) { /* some meta data */
1776 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1777 mov->next_chunk_offset = offset;
1778 }
1779
1780 //av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1781 if(!sc->is_ff_stream || s->streams[sc->ffindex]->discard) {
1782 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1783 mov->next_chunk_offset = offset;
1784 offset = 0x0FFFFFFFFFFFFFFFLL;
1785 goto again;
1786 }
1787
1788 /* now get the chunk size... */
1789
1790 for(i=0; i<mov->total_streams; i++) {
1791 MOVStreamContext *msc = mov->streams[i];
1792 if ((msc->next_chunk < msc->chunk_count)
1793 && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1794 size = msc->chunk_offsets[msc->next_chunk] - offset;
1795 }
1796
1797 #ifdef MOV_MINOLTA_FIX
1798 //Make sure that size is according to sample_size (Needed by .mov files
1799 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1800 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1801 //but I have no such movies
1802 if (sc->sample_size > 0) {
1803 int foundsize=0;
1804 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1805 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1806 {
1807 // I can't figure out why for PCM audio sample_size is always 1
1808 // (it should actually be channels*bits_per_second/8) but it is.
1809 AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1810 if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1811 foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1812 else
1813 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1814 }
1815 #ifdef DEBUG
1816 av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);
1817 #endif
1818 }
1819 if( (foundsize>0) && (foundsize<size) )
1820 {
1821 #ifdef DEBUG
1822 /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
1823 #endif
1824 size=foundsize;
1825 }
1826 }
1827 #endif //MOV_MINOLTA_FIX
1828
1829 #ifdef MOV_SPLIT_CHUNKS
1830 /* split chunks into samples */
1831 if (sc->sample_size == 0) {
1832 idx = sc->sample_to_chunk_index;
1833 if ((idx + 1 < sc->sample_to_chunk_sz)
1834 && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1835 idx++;
1836 sc->sample_to_chunk_index = idx;
1837 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1838 mov->partial = sc;
1839 /* we'll have to get those samples before next chunk */
1840 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1841 size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1842 }
1843
1844 sc->current_sample++;
1845 }
1846 #endif
1847
1848 readchunk:
1849 #ifdef DEBUG
1850 av_log(NULL, AV_LOG_DEBUG, "chunk: %lli -> %lli (%i)\n", offset, offset + size, size);
1851 #endif
1852 if(size == 0x0FFFFFFF)
1853 size = mov->mdat_size + mov->mdat_offset - offset;
1854 if(size < 0)
1855 return -1;
1856 if(size == 0)
1857 return -1;
1858 url_fseek(&s->pb, offset, SEEK_SET);
1859
1860 //av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1861 if (sc->header_len > 0) {
1862 av_new_packet(pkt, size + sc->header_len);
1863 memcpy(pkt->data, sc->header_data, sc->header_len);
1864 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1865 /* free header */
1866 av_freep(&sc->header_data);
1867 sc->header_len = 0;
1868 } else {
1869 av_new_packet(pkt, size);
1870 get_buffer(&s->pb, pkt->data, pkt->size);
1871 }
1872 pkt->stream_index = sc->ffindex;
1873
1874 // If the keyframes table exists, mark any samples that are in the table as key frames.
1875 // If no table exists, treat very sample as a key frame.
1876 if (sc->keyframes) {
1877 a = 0;
1878 b = sc->keyframe_count - 1;
1879
1880 while (a < b) {
1881 m = (a + b + 1) >> 1;
1882 if (sc->keyframes[m] > sc->current_sample) {
1883 b = m - 1;
1884 } else {
1885 a = m;
1886 }
1887 }
1888
1889 if (sc->keyframes[a] == sc->current_sample)
1890 pkt->flags |= PKT_FLAG_KEY;
1891 }
1892 else
1893 pkt->flags |= PKT_FLAG_KEY;
1894
1895 #ifdef DEBUG
1896 /*
1897 av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %ld) ", pkt->stream_index, pkt->size);
1898 for(i=0; i<8; i++)
1899 av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
1900 for(i=0; i<8; i++)
1901 av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
1902 av_log(NULL, AV_LOG_DEBUG, "\n");
1903 */
1904 #endif
1905
1906 mov->next_chunk_offset = offset + size;
1907
1908 /* find the corresponding dts */
1909 if (sc && sc->sample_to_time_index < sc->stts_count && pkt) {
1910 uint32_t count;
1911 uint64_t dts;
1912 uint32_t duration = (uint32_t)(sc->stts_data[sc->sample_to_time_index]&0xffff);
1913 count = (uint32_t)(sc->stts_data[sc->sample_to_time_index]>>32);
1914 if ((sc->sample_to_time_sample + count) < sc->current_sample) {
1915 sc->sample_to_time_sample += count;
1916 sc->sample_to_time_time += count*duration;
1917 sc->sample_to_time_index ++;
1918 duration = (uint32_t)(sc->stts_data[sc->sample_to_time_index]&0xffff);
1919 }
1920 dts = sc->sample_to_time_time + (sc->current_sample-1 - sc->sample_to_time_sample) * duration;
1921 dts = av_rescale( dts,
1922 (int64_t)s->streams[sc->ffindex]->time_base.den,
1923 (int64_t)sc->time_scale * (int64_t)s->streams[sc->ffindex]->time_base.num );
1924 pkt->dts = dts;
1925 // audio pts = dts, true for video only in low_latency mode (FIXME a good way to know if we are in a low latency stream ?)
1926 if (s->streams[sc->ffindex]->codec.codec_type == CODEC_TYPE_AUDIO)
1927 pkt->pts = dts;
1928 else
1929 pkt->pts = AV_NOPTS_VALUE;
1930 #ifdef DEBUG
1931 /* av_log(NULL, AV_LOG_DEBUG, "stream #%d smp #%ld dts = %ld (smp:%ld time:%ld idx:%ld ent:%d count:%ld dur:%ld)\n"
1932 , pkt->stream_index, sc->current_sample-1, (long)pkt->dts
1933 , (long)sc->sample_to_time_sample
1934 , (long)sc->sample_to_time_time
1935 , (long)sc->sample_to_time_index
1936 , (long)sc->stts_count
1937 , count
1938 , duration);*/
1939 #endif
1940 }
1941
1942 return 0;
1943 }
1944
1945 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
1946 /**
1947 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
1948 */
1949 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1950 {
1951 MOVContext* mov = (MOVContext *) s->priv_data;
1952 MOVStreamContext* sc;
1953 int32_t i, a, b, m;
1954 int64_t sample_time;
1955 int64_t start_time;
1956 int32_t seek_sample, sample;
1957 int32_t duration;
1958 int32_t count;
1959 int32_t chunk;
1960 int32_t left_in_chunk;
1961 int64_t chunk_file_offset;
1962 int64_t sample_file_offset;
1963 int32_t first_chunk_sample;
1964 int32_t sample_to_chunk_idx;
1965 int sample_to_time_index;
1966 long sample_to_time_sample = 0;
1967 uint64_t sample_to_time_time = 0;
1968 int mov_idx;
1969
1970 // Find the corresponding mov stream
1971 for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
1972 if (mov->streams[mov_idx]->ffindex == stream_index)
1973 break;
1974 if (mov_idx == mov->total_streams) {
1975 av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
1976 return -1;
1977 }
1978 sc = mov->streams[mov_idx];
1979
1980 // Step 1. Find the edit that contains the requested time (elst)
1981 if (sc->edit_count) {
1982 // FIXME should handle edit list
1983 av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
1984 return -1;
1985 }
1986
1987 // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
1988 #ifdef DEBUG
1989 av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
1990 #endif
1991 // convert timestamp from time_base unit to timescale unit
1992 sample_time = av_rescale( timestamp,
1993 (int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
1994 (int64_t)s->streams[stream_index]->time_base.den);
1995 start_time = 0; // FIXME use elst atom
1996 sample = 1; // sample are 0 based in table
1997 #ifdef DEBUG
1998 av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
1999 #endif
2000 for (i = 0; i < sc->stts_count; i++) {
2001 count = (uint32_t)(sc->stts_data[i]>>32);
2002 duration = (uint32_t)(sc->stts_data[i]&0xffff);
2003 //av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);
2004 //av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);
2005 if ((start_time + count*duration) > sample_time) {
2006 sample_to_time_time = start_time;
2007 sample_to_time_index = i;
2008 sample_to_time_sample = sample;
2009 sample += (sample_time - start_time) / duration;
2010 break;
2011 }
2012 sample += count;
2013 start_time += count * duration;
2014 }
2015 sample_to_time_time = start_time;
2016 sample_to_time_index = i;
2017 /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
2018 is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
2019
2020 #ifdef DEBUG
2021 av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
2022 #endif
2023 if (sample > sc->sample_count) {
2024 av_log(s, AV_LOG_ERROR, "mov: sample pos is too high, unable to seek (req. sample=%i, sample count=%ld)\n", sample, sc->sample_count);
2025 return -1;
2026 }
2027
2028 // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
2029 if (sc->keyframes) {
2030 a = 0;
2031 b = sc->keyframe_count - 1;
2032 while (a < b) {
2033 m = (a + b + 1) >> 1;
2034 if (sc->keyframes[m] > sample) {
2035 b = m - 1;
2036 } else {
2037 a = m;
2038 }
2039 #ifdef DEBUG
2040 // av_log(s, AV_LOG_DEBUG, "a=%i (%i) b=%i (%i) m=%i (%i) stream #%i\n", a, sc->keyframes[a], b, sc->keyframes[b], m, sc->keyframes[m], mov_idx);
2041 #endif
2042 }
2043 // for low latency prob: always use the previous keyframe, just uncomment the next line
2044 // if (a) a--;
2045 seek_sample = sc->keyframes[a];
2046 }
2047 else
2048 seek_sample = sample; // else all samples are key frames
2049 #ifdef DEBUG
2050 av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
2051 #endif
2052
2053 // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
2054 for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
2055 b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
2056 if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
2057 break;
2058 first_chunk_sample += b;
2059 }
2060 chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
2061 left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
2062 first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
2063 sample_to_chunk_idx = i;
2064 #ifdef DEBUG
2065 av_log(s, AV_LOG_DEBUG, "Sample was found in chunk #%i at sample offset %i (idx %i)\n", chunk, seek_sample - first_chunk_sample, sample_to_chunk_idx);
2066 #endif
2067
2068 // Step 5. Find the offset of the chunk using the chunk offset atom
2069 if (!sc->chunk_offsets) {
2070 av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
2071 return -1;
2072 }
2073 if (chunk > sc->chunk_count) {
2074 av_log(s, AV_LOG_ERROR, "mov: chunk offset atom too short, unable to seek (req. chunk=%i, chunk count=%li)\n", chunk, sc->chunk_count);
2075 return -1;
2076 }
2077 chunk_file_offset = sc->chunk_offsets[chunk - 1];
2078 #ifdef DEBUG
2079 av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
2080 #endif
2081
2082 // Step 6. Find the byte offset within the chunk using the sample size atom
2083 sample_file_offset = chunk_file_offset;
2084 if (sc->sample_size)
2085 sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
2086 else {
2087 for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
2088 sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
2089 }
2090 }
2091 #ifdef DEBUG
2092 av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
2093 #endif
2094
2095 // Step 6. Update the parser
2096 mov->partial = sc;
2097 mov->next_chunk_offset = sample_file_offset;
2098 // Update current stream state
2099 sc->current_sample = seek_sample - 1; // zero based
2100 sc->left_in_chunk = left_in_chunk;
2101 sc->next_chunk = chunk; // +1 -1 (zero based)
2102 sc->sample_to_chunk_index = sample_to_chunk_idx;
2103
2104 // Update other streams
2105 for (i = 0; i<mov->total_streams; i++) {
2106 MOVStreamContext *msc;
2107 if (i == mov_idx) continue;
2108 // Find the nearest 'next' chunk
2109 msc = mov->streams[i];
2110 a = 0;
2111 b = msc->chunk_count - 1;
2112 while (a < b) {
2113 m = (a + b + 1) >> 1;
2114 if (msc->chunk_offsets[m] > chunk_file_offset) {
2115 b = m - 1;
2116 } else {
2117 a = m;
2118 }
2119 #ifdef DEBUG
2120 /* av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2121 , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m], i); */
2122 #endif
2123 }
2124 msc->next_chunk = a;
2125 if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2126 msc->next_chunk ++;
2127 #ifdef DEBUG
2128 av_log(s, AV_LOG_DEBUG, "Nearest next chunk for stream #%i is #%i @%lli\n", i, msc->next_chunk+1, msc->chunk_offsets[msc->next_chunk]);
2129 #endif
2130 // Compute sample count and index in the sample_to_chunk table (what a pity)
2131 msc->sample_to_chunk_index = 0;
2132 msc->current_sample = 0;
2133 for(; msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2134 && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2135 msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2136 * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2137 }
2138 msc->current_sample += (msc->next_chunk - (msc->sample_to_chunk[msc->sample_to_chunk_index].first - 1)) * sc->sample_to_chunk[msc->sample_to_chunk_index].count;
2139 msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2140 // Find corresponding position in stts (used later to compute dts)
2141 sample = 0;
2142 start_time = 0;
2143 for (msc->sample_to_time_index = 0; msc->sample_to_time_index < msc->stts_count; msc->sample_to_time_index++) {
2144 count = (uint32_t)(msc->stts_data[msc->sample_to_time_index]>>32);
2145 duration = (uint32_t)(msc->stts_data[msc->sample_to_time_index]&0xffff);
2146 if ((sample + count - 1) > msc->current_sample) {
2147 msc->sample_to_time_time = start_time;
2148 msc->sample_to_time_sample = sample;
2149 break;
2150 }
2151 sample += count;
2152 start_time += count * duration;
2153 }
2154 #ifdef DEBUG
2155 av_log(s, AV_LOG_DEBUG, "Next Sample for stream #%i is #%i @%i\n", i, msc->current_sample + 1, msc->sample_to_chunk_index + 1);
2156 #endif
2157 }
2158 return 0;
2159 }
2160 #endif
2161
2162 static int mov_read_close(AVFormatContext *s)
2163 {
2164 int i;
2165 MOVContext *mov = (MOVContext *) s->priv_data;
2166 for(i=0; i<mov->total_streams; i++)
2167 mov_free_stream_context(mov->streams[i]);
2168 /* free color tabs */
2169 for(i=0; i<mov->ctab_size; i++)
2170 av_freep(&mov->ctab[i]);
2171 av_freep(&mov->ctab);
2172 return 0;
2173 }
2174
2175 static AVInputFormat mov_iformat = {
2176 "mov,mp4,m4a,3gp",
2177 "QuickTime/MPEG4 format",
2178 sizeof(MOVContext),
2179 mov_probe,
2180 mov_read_header,
2181 mov_read_packet,
2182 mov_read_close,
2183 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2184 mov_read_seek,
2185 #endif
2186 };
2187
2188 int mov_init(void)
2189 {
2190 av_register_input_format(&mov_iformat);
2191 return 0;
2192 }