Remove .pc files on distclean.
[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_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
107 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
108 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
109 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
111 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
112 /* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
113 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
114 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
115 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
116 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
117 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
118 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
119 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
120 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
121 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 produced by Sony HD camera */
122 { CODEC_ID_NONE, 0 },
123 };
124
125 static const CodecTag mov_audio_tags[] = {
126 /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
127 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
128 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
129 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
130 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
131 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
132 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
133 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
134 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
135 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
136
137 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
138 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
139 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
140 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
141 /* MP4 tags */
142 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
143 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
144 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
145 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
146 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
147 { CODEC_ID_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
148 { CODEC_ID_NONE, 0 },
149 };
150
151 /* the QuickTime file format is quite convoluted...
152 * it has lots of index tables, each indexing something in another one...
153 * Here we just use what is needed to read the chunks
154 */
155
156 typedef struct MOV_sample_to_chunk_tbl {
157 long first;
158 long count;
159 long id;
160 } MOV_sample_to_chunk_tbl;
161
162 typedef struct {
163 uint32_t type;
164 int64_t offset;
165 int64_t size; /* total size (excluding the size and type fields) */
166 } MOV_atom_t;
167
168 typedef struct {
169 int seed;
170 int flags;
171 int size;
172 void* clrs;
173 } MOV_ctab_t;
174
175 typedef struct {
176 uint8_t version;
177 uint32_t flags; // 24bit
178
179 /* 0x03 ESDescrTag */
180 uint16_t es_id;
181 #define MP4ODescrTag 0x01
182 #define MP4IODescrTag 0x02
183 #define MP4ESDescrTag 0x03
184 #define MP4DecConfigDescrTag 0x04
185 #define MP4DecSpecificDescrTag 0x05
186 #define MP4SLConfigDescrTag 0x06
187 #define MP4ContentIdDescrTag 0x07
188 #define MP4SupplContentIdDescrTag 0x08
189 #define MP4IPIPtrDescrTag 0x09
190 #define MP4IPMPPtrDescrTag 0x0A
191 #define MP4IPMPDescrTag 0x0B
192 #define MP4RegistrationDescrTag 0x0D
193 #define MP4ESIDIncDescrTag 0x0E
194 #define MP4ESIDRefDescrTag 0x0F
195 #define MP4FileIODescrTag 0x10
196 #define MP4FileODescrTag 0x11
197 #define MP4ExtProfileLevelDescrTag 0x13
198 #define MP4ExtDescrTagsStart 0x80
199 #define MP4ExtDescrTagsEnd 0xFE
200 uint8_t stream_priority;
201
202 /* 0x04 DecConfigDescrTag */
203 uint8_t object_type_id;
204 uint8_t stream_type;
205 /* XXX: really streamType is
206 * only 6bit, followed by:
207 * 1bit upStream
208 * 1bit reserved
209 */
210 uint32_t buffer_size_db; // 24
211 uint32_t max_bitrate;
212 uint32_t avg_bitrate;
213
214 /* 0x05 DecSpecificDescrTag */
215 uint8_t decoder_cfg_len;
216 uint8_t *decoder_cfg;
217
218 /* 0x06 SLConfigDescrTag */
219 uint8_t sl_config_len;
220 uint8_t *sl_config;
221 } MOV_esds_t;
222
223 struct MOVParseTableEntry;
224
225 typedef struct Time2Sample{
226 int count;
227 int duration;
228 }Time2Sample;
229
230 typedef struct MOVStreamContext {
231 int ffindex; /* the ffmpeg stream id */
232 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
233 long next_chunk;
234 long chunk_count;
235 int64_t *chunk_offsets;
236 int stts_count;
237 Time2Sample *stts_data;
238 int ctts_count;
239 Time2Sample *ctts_data;
240 int edit_count; /* number of 'edit' (elst atom) */
241 long sample_to_chunk_sz;
242 MOV_sample_to_chunk_tbl *sample_to_chunk;
243 long sample_to_chunk_index;
244 int sample_to_time_index;
245 long sample_to_time_sample;
246 uint64_t sample_to_time_time;
247 int sample_to_ctime_index;
248 int sample_to_ctime_sample;
249 long sample_size;
250 long sample_count;
251 long *sample_sizes;
252 long keyframe_count;
253 long *keyframes;
254 int time_scale;
255 long current_sample;
256 long left_in_chunk; /* how many samples before next chunk */
257 MOV_esds_t esds;
258 } MOVStreamContext;
259
260 typedef struct MOVContext {
261 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) */
262 AVFormatContext *fc;
263 int time_scale;
264 int duration; /* duration of the longest track */
265 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
266 int found_mdat; /* we suppose we have enough data to read the file */
267 int64_t mdat_size;
268 int64_t mdat_offset;
269 int ni; ///< non interleaved mode
270 int total_streams;
271 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
272 * but we need the info to be able to skip data from those streams in the 'mdat' section
273 */
274 MOVStreamContext *streams[MAX_STREAMS];
275
276 int64_t next_chunk_offset;
277 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
278 int ctab_size;
279 MOV_ctab_t **ctab; /* color tables */
280 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
281 /* NOTE: for recursion save to/ restore from local variable! */
282
283 AVPaletteControl palette_control;
284 } MOVContext;
285
286
287 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
288
289 /* those functions parse an atom */
290 /* return code:
291 1: found what I wanted, exit
292 0: continue to parse next atom
293 -1: error occured, exit
294 */
295 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
296
297 /* links atom IDs to parse functions */
298 typedef struct MOVParseTableEntry {
299 uint32_t type;
300 mov_parse_function func;
301 } MOVParseTableEntry;
302
303 #ifdef DEBUG
304 /*
305 * XXX: static sux, even more in a multithreaded environment...
306 * Avoid them. This is here just to help debugging.
307 */
308 static int debug_indent = 0;
309 void print_atom(const char *str, MOV_atom_t atom)
310 {
311 unsigned int tag, i;
312 tag = (unsigned int) atom.type;
313 i=debug_indent;
314 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
315 while(i--)
316 av_log(NULL, AV_LOG_DEBUG, "|");
317 av_log(NULL, AV_LOG_DEBUG, "parse:");
318 av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
319 str, tag & 0xff,
320 (tag >> 8) & 0xff,
321 (tag >> 16) & 0xff,
322 (tag >> 24) & 0xff,
323 (unsigned int)atom.offset,
324 (unsigned int)atom.size);
325 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
326 }
327 #else
328 #define print_atom(a,b)
329 #endif
330
331
332 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
333 {
334 print_atom("leaf", atom);
335
336 if (atom.size>1)
337 url_fskip(pb, atom.size);
338 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
339 return 0;
340 }
341
342 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
343 {
344 int64_t total_size = 0;
345 MOV_atom_t a;
346 int i;
347 int err = 0;
348
349 #ifdef DEBUG
350 print_atom("default", atom);
351 debug_indent++;
352 #endif
353
354 a.offset = atom.offset;
355
356 if (atom.size < 0)
357 atom.size = 0x7fffffffffffffffLL;
358 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
359 a.size = atom.size;
360 a.type=0L;
361 if(atom.size >= 8) {
362 a.size = get_be32(pb);
363 a.type = get_le32(pb);
364 }
365 total_size += 8;
366 a.offset += 8;
367 //av_log(NULL, AV_LOG_DEBUG, "type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
368 if (a.size == 1) { /* 64 bit extended size */
369 a.size = get_be64(pb) - 8;
370 a.offset += 8;
371 total_size += 8;
372 }
373 if (a.size == 0) {
374 a.size = atom.size - total_size;
375 if (a.size <= 8)
376 break;
377 }
378 for (i = 0; c->parse_table[i].type != 0L
379 && c->parse_table[i].type != a.type; i++)
380 /* empty */;
381
382 a.size -= 8;
383
384 if(a.size < 0)
385 break;
386
387 // av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
388 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
389 // url_seek(pb, atom.offset+atom.size, SEEK_SET);
390 #ifdef DEBUG
391 print_atom("unknown", a);
392 #endif
393 url_fskip(pb, a.size);
394 } else {
395 #ifdef DEBUG
396 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
397 //print_atom(b, type, offset, size);
398 #endif
399 err = (c->parse_table[i].func)(c, pb, a);
400 }
401
402 a.offset += a.size;
403 total_size += a.size;
404 }
405
406 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
407 //av_log(NULL, AV_LOG_DEBUG, "RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
408 url_fskip(pb, atom.size - total_size);
409 }
410
411 #ifdef DEBUG
412 debug_indent--;
413 #endif
414 return err;
415 }
416
417 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
418 {
419 #if 1
420 url_fskip(pb, atom.size); // for now
421 #else
422 VERY VERY BROKEN, NEVER execute this, needs rewrite
423 unsigned int len;
424 MOV_ctab_t *t;
425 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
426 t = c->ctab[c->ctab_size];
427 t->seed = get_be32(pb);
428 t->flags = get_be16(pb);
429 t->size = get_be16(pb) + 1;
430 len = 2 * t->size * 4;
431 if (len > 0) {
432 t->clrs = av_malloc(len); // 16bit A R G B
433 if (t->clrs)
434 get_buffer(pb, t->clrs, len);
435 }
436 #endif
437
438 return 0;
439 }
440
441 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
442 {
443 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
444 int len = 0;
445 uint32_t type;
446 uint32_t ctype;
447
448 print_atom("hdlr", atom);
449
450 get_byte(pb); /* version */
451 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
452
453 /* component type */
454 ctype = get_le32(pb);
455 type = get_le32(pb); /* component subtype */
456
457 #ifdef DEBUG
458 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);
459 av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
460 #endif
461 #ifdef DEBUG
462 /* XXX: yeah this is ugly... */
463 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
464 if(type == MKTAG('v', 'i', 'd', 'e'))
465 puts("hdlr: vide");
466 else if(type == MKTAG('s', 'o', 'u', 'n'))
467 puts("hdlr: soun");
468 } else if(ctype == 0) { /* MP4 */
469 if(type == MKTAG('v', 'i', 'd', 'e'))
470 puts("hdlr: vide");
471 else if(type == MKTAG('s', 'o', 'u', 'n'))
472 puts("hdlr: soun");
473 else if(type == MKTAG('o', 'd', 's', 'm'))
474 puts("hdlr: odsm");
475 else if(type == MKTAG('s', 'd', 's', 'm'))
476 puts("hdlr: sdsm");
477 } else puts("hdlr: meta");
478 #endif
479
480 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
481 /* helps parsing the string hereafter... */
482 c->mp4 = 0;
483 if(type == MKTAG('v', 'i', 'd', 'e'))
484 st->codec->codec_type = CODEC_TYPE_VIDEO;
485 else if(type == MKTAG('s', 'o', 'u', 'n'))
486 st->codec->codec_type = CODEC_TYPE_AUDIO;
487 } else if(ctype == 0) { /* MP4 */
488 /* helps parsing the string hereafter... */
489 c->mp4 = 1;
490 if(type == MKTAG('v', 'i', 'd', 'e'))
491 st->codec->codec_type = CODEC_TYPE_VIDEO;
492 else if(type == MKTAG('s', 'o', 'u', 'n'))
493 st->codec->codec_type = CODEC_TYPE_AUDIO;
494 }
495 get_be32(pb); /* component manufacture */
496 get_be32(pb); /* component flags */
497 get_be32(pb); /* component flags mask */
498
499 if(atom.size <= 24)
500 return 0; /* nothing left to read */
501 /* XXX: MP4 uses a C string, not a pascal one */
502 /* component name */
503
504 if(c->mp4) {
505 /* .mp4: C string */
506 while(get_byte(pb) && (++len < (atom.size - 24)));
507 } else {
508 /* .mov: PASCAL string */
509 #ifdef DEBUG
510 char* buf;
511 #endif
512 len = get_byte(pb);
513 #ifdef DEBUG
514 buf = (uint8_t*) av_malloc(len+1);
515 if (buf) {
516 get_buffer(pb, buf, len);
517 buf[len] = '\0';
518 av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
519 av_free(buf);
520 } else
521 #endif
522 url_fskip(pb, len);
523 }
524
525 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
526 return 0;
527 }
528
529 static int mov_mp4_read_descr_len(ByteIOContext *pb)
530 {
531 int len = 0;
532 int count = 4;
533 while (count--) {
534 int c = get_byte(pb);
535 len = (len << 7) | (c & 0x7f);
536 if (!(c & 0x80))
537 break;
538 }
539 return len;
540 }
541
542 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
543 {
544 int len;
545 *tag = get_byte(pb);
546 len = mov_mp4_read_descr_len(pb);
547 #ifdef DEBUG
548 av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
549 #endif
550 return len;
551 }
552
553 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
554 {
555 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
556 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
557 int64_t start_pos = url_ftell(pb);
558 int tag, len;
559
560 print_atom("esds", atom);
561
562 /* Well, broken but suffisant for some MP4 streams */
563 get_be32(pb); /* version + flags */
564 len = mov_mp4_read_descr(pb, &tag);
565 if (tag == MP4ESDescrTag) {
566 get_be16(pb); /* ID */
567 get_byte(pb); /* priority */
568 } else
569 get_be16(pb); /* ID */
570
571 len = mov_mp4_read_descr(pb, &tag);
572 if (tag == MP4DecConfigDescrTag) {
573 sc->esds.object_type_id = get_byte(pb);
574 sc->esds.stream_type = get_byte(pb);
575 sc->esds.buffer_size_db = get_be24(pb);
576 sc->esds.max_bitrate = get_be32(pb);
577 sc->esds.avg_bitrate = get_be32(pb);
578
579 len = mov_mp4_read_descr(pb, &tag);
580 //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);
581 if (tag == MP4DecSpecificDescrTag) {
582 #ifdef DEBUG
583 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
584 #endif
585 st->codec->extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
586 if (st->codec->extradata) {
587 get_buffer(pb, st->codec->extradata, len);
588 st->codec->extradata_size = len;
589 }
590 }
591 }
592 /* in any case, skip garbage */
593 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
594 return 0;
595 }
596
597 /* this atom contains actual media data */
598 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
599 {
600 print_atom("mdat", atom);
601
602 if(atom.size == 0) /* wrong one (MP4) */
603 return 0;
604 c->found_mdat=1;
605 c->mdat_offset = atom.offset;
606 c->mdat_size = atom.size;
607 if(c->found_moov)
608 return 1; /* found both, just go */
609 url_fskip(pb, atom.size);
610 return 0; /* now go for moov */
611 }
612
613 /* this atom should contain all header atoms */
614 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
615 {
616 int err;
617
618 print_atom("moov", atom);
619
620 err = mov_read_default(c, pb, atom);
621 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
622 /* so we don't parse the whole file if over a network */
623 c->found_moov=1;
624 if(c->found_mdat)
625 return 1; /* found both, just go */
626 return 0; /* now go for mdat */
627 }
628
629
630 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
631 {
632 print_atom("mdhd", atom);
633
634 get_byte(pb); /* version */
635
636 get_byte(pb); get_byte(pb);
637 get_byte(pb); /* flags */
638
639 get_be32(pb); /* creation time */
640 get_be32(pb); /* modification time */
641
642 c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
643 av_set_pts_info(c->fc->streams[c->fc->nb_streams-1], 64, 1, c->streams[c->fc->nb_streams-1]->time_scale);
644
645 #ifdef DEBUG
646 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 */
647 #endif
648 c->fc->streams[c->fc->nb_streams-1]->duration= get_be32(pb); /* duration */
649
650 get_be16(pb); /* language */
651 get_be16(pb); /* quality */
652
653 return 0;
654 }
655
656 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
657 {
658 print_atom("mvhd", atom);
659
660 get_byte(pb); /* version */
661 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
662
663 get_be32(pb); /* creation time */
664 get_be32(pb); /* modification time */
665 c->time_scale = get_be32(pb); /* time scale */
666 #ifdef DEBUG
667 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
668 #endif
669 c->duration = get_be32(pb); /* duration */
670 get_be32(pb); /* preferred scale */
671
672 get_be16(pb); /* preferred volume */
673
674 url_fskip(pb, 10); /* reserved */
675
676 url_fskip(pb, 36); /* display matrix */
677
678 get_be32(pb); /* preview time */
679 get_be32(pb); /* preview duration */
680 get_be32(pb); /* poster time */
681 get_be32(pb); /* selection time */
682 get_be32(pb); /* selection duration */
683 get_be32(pb); /* current time */
684 get_be32(pb); /* next track ID */
685
686 return 0;
687 }
688
689 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
690 {
691 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
692
693 if((uint64_t)atom.size > (1<<30))
694 return -1;
695
696 // currently SVQ3 decoder expect full STSD header - so let's fake it
697 // this should be fixed and just SMI header should be passed
698 av_free(st->codec->extradata);
699 st->codec->extradata_size = 0x5a + atom.size;
700 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
701
702 if (st->codec->extradata) {
703 strcpy(st->codec->extradata, "SVQ3"); // fake
704 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
705 //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld %s\n", atom.size, (char*)st->codec->extradata + 0x5a);
706 } else
707 url_fskip(pb, atom.size);
708
709 return 0;
710 }
711
712 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
713 {
714 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
715
716 if((uint64_t)atom.size > (1<<30))
717 return -1;
718
719 av_free(st->codec->extradata);
720
721 st->codec->extradata_size = atom.size;
722 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
723
724 if (st->codec->extradata) {
725 get_buffer(pb, st->codec->extradata, atom.size);
726 } else
727 url_fskip(pb, atom.size);
728
729 return 0;
730 }
731
732 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
733 {
734 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
735 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
736 unsigned int i, entries;
737
738 print_atom("stco", atom);
739
740 get_byte(pb); /* version */
741 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
742
743 entries = get_be32(pb);
744
745 if(entries >= UINT_MAX/sizeof(int64_t))
746 return -1;
747
748 sc->chunk_count = entries;
749 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
750 if (!sc->chunk_offsets)
751 return -1;
752 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
753 for(i=0; i<entries; i++) {
754 sc->chunk_offsets[i] = get_be32(pb);
755 }
756 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
757 for(i=0; i<entries; i++) {
758 sc->chunk_offsets[i] = get_be64(pb);
759 }
760 } else
761 return -1;
762
763 for(i=0; i<c->fc->nb_streams; i++){
764 MOVStreamContext *sc2 = (MOVStreamContext *)c->fc->streams[i]->priv_data;
765 if(sc2 && sc2->chunk_offsets){
766 int64_t first= sc2->chunk_offsets[0];
767 int64_t last= sc2->chunk_offsets[sc2->chunk_count-1];
768 if(first >= sc->chunk_offsets[entries-1] || last <= sc->chunk_offsets[0])
769 c->ni=1;
770 }
771 }
772 #ifdef DEBUG
773 /*
774 for(i=0; i<entries; i++) {
775 av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
776 }
777 */
778 #endif
779 return 0;
780 }
781
782 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
783 {
784 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
785 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
786 int entries, frames_per_sample;
787 uint32_t format;
788 uint8_t codec_name[32];
789
790 /* for palette traversal */
791 int color_depth;
792 int color_start;
793 int color_count;
794 int color_end;
795 int color_index;
796 int color_dec;
797 int color_greyscale;
798 unsigned char *color_table;
799 int j;
800 unsigned char r, g, b;
801
802 print_atom("stsd", atom);
803
804 get_byte(pb); /* version */
805 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
806
807 entries = get_be32(pb);
808
809 while(entries--) { //Parsing Sample description table
810 enum CodecID id;
811 int size = get_be32(pb); /* size */
812 format = get_le32(pb); /* data format */
813
814 get_be32(pb); /* reserved */
815 get_be16(pb); /* reserved */
816 get_be16(pb); /* index */
817
818 /* for MPEG4: set codec type by looking for it */
819 id = codec_get_id(mov_video_tags, format);
820 if (id >= 0) {
821 AVCodec *codec;
822 codec = avcodec_find_decoder(id);
823 if (codec)
824 st->codec->codec_type = codec->type;
825 }
826 #ifdef DEBUG
827 av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
828 size,
829 (format >> 0) & 0xff,
830 (format >> 8) & 0xff,
831 (format >> 16) & 0xff,
832 (format >> 24) & 0xff,
833 st->codec->codec_type);
834 #endif
835 st->codec->codec_tag = format;
836 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
837 MOV_atom_t a = { 0, 0, 0 };
838 st->codec->codec_id = id;
839 get_be16(pb); /* version */
840 get_be16(pb); /* revision level */
841 get_be32(pb); /* vendor */
842 get_be32(pb); /* temporal quality */
843 get_be32(pb); /* spacial quality */
844 if(st->codec->codec_id == CODEC_ID_MPEG4){ //FIXME this is silly
845 get_be16(pb);
846 get_be16(pb);
847 }else{
848 st->codec->width = get_be16(pb); /* width */
849 st->codec->height = get_be16(pb); /* height */
850 }
851 get_be32(pb); /* horiz resolution */
852 get_be32(pb); /* vert resolution */
853 get_be32(pb); /* data size, always 0 */
854 frames_per_sample = get_be16(pb); /* frames per samples */
855 #ifdef DEBUG
856 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
857 #endif
858 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
859 if (codec_name[0] <= 31) {
860 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
861 st->codec->codec_name[codec_name[0]] = 0;
862 }
863
864 st->codec->bits_per_sample = get_be16(pb); /* depth */
865 st->codec->color_table_id = get_be16(pb); /* colortable id */
866
867 /* These are set in mov_read_stts and might already be set!
868 st->codec->time_base.den = 25;
869 st->codec->time_base.num = 1;
870 */
871 size -= (16+8*4+2+32+2*2);
872 #if 0
873 while (size >= 8) {
874 MOV_atom_t a;
875 int64_t start_pos;
876
877 a.size = get_be32(pb);
878 a.type = get_le32(pb);
879 size -= 8;
880 #ifdef DEBUG
881 av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
882 (a.type >> 0) & 0xff,
883 (a.type >> 8) & 0xff,
884 (a.type >> 16) & 0xff,
885 (a.type >> 24) & 0xff,
886 a.size, size);
887 #endif
888 start_pos = url_ftell(pb);
889
890 switch(a.type) {
891 case MKTAG('e', 's', 'd', 's'):
892 {
893 int tag, len;
894 /* Well, broken but suffisant for some MP4 streams */
895 get_be32(pb); /* version + flags */
896 len = mov_mp4_read_descr(pb, &tag);
897 if (tag == 0x03) {
898 /* MP4ESDescrTag */
899 get_be16(pb); /* ID */
900 get_byte(pb); /* priority */
901 len = mov_mp4_read_descr(pb, &tag);
902 if (tag != 0x04)
903 goto fail;
904 /* MP4DecConfigDescrTag */
905 get_byte(pb); /* objectTypeId */
906 get_be32(pb); /* streamType + buffer size */
907 get_be32(pb); /* max bit rate */
908 get_be32(pb); /* avg bit rate */
909 len = mov_mp4_read_descr(pb, &tag);
910 if (tag != 0x05)
911 goto fail;
912 /* MP4DecSpecificDescrTag */
913 #ifdef DEBUG
914 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
915 #endif
916 sc->header_data = av_mallocz(len);
917 if (sc->header_data) {
918 get_buffer(pb, sc->header_data, len);
919 sc->header_len = len;
920 }
921 }
922 /* in any case, skip garbage */
923 }
924 break;
925 default:
926 break;
927 }
928 fail:
929 av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
930 if (atom.size > 8) {
931 url_fskip(pb, (atom.size - 8) -
932 ((url_ftell(pb) - start_pos)));
933 size -= atom.size - 8;
934 }
935 }
936 if (size > 0) {
937 /* unknown extension */
938 url_fskip(pb, size);
939 }
940 #else
941
942 /* figure out the palette situation */
943 color_depth = st->codec->bits_per_sample & 0x1F;
944 color_greyscale = st->codec->bits_per_sample & 0x20;
945
946 /* if the depth is 2, 4, or 8 bpp, file is palettized */
947 if ((color_depth == 2) || (color_depth == 4) ||
948 (color_depth == 8)) {
949
950 if (color_greyscale) {
951
952 /* compute the greyscale palette */
953 color_count = 1 << color_depth;
954 color_index = 255;
955 color_dec = 256 / (color_count - 1);
956 for (j = 0; j < color_count; j++) {
957 r = g = b = color_index;
958 c->palette_control.palette[j] =
959 (r << 16) | (g << 8) | (b);
960 color_index -= color_dec;
961 if (color_index < 0)
962 color_index = 0;
963 }
964
965 } else if (st->codec->color_table_id & 0x08) {
966
967 /* if flag bit 3 is set, use the default palette */
968 color_count = 1 << color_depth;
969 if (color_depth == 2)
970 color_table = ff_qt_default_palette_4;
971 else if (color_depth == 4)
972 color_table = ff_qt_default_palette_16;
973 else
974 color_table = ff_qt_default_palette_256;
975
976 for (j = 0; j < color_count; j++) {
977 r = color_table[j * 4 + 0];
978 g = color_table[j * 4 + 1];
979 b = color_table[j * 4 + 2];
980 c->palette_control.palette[j] =
981 (r << 16) | (g << 8) | (b);
982 }
983
984 } else {
985
986 /* load the palette from the file */
987 color_start = get_be32(pb);
988 color_count = get_be16(pb);
989 color_end = get_be16(pb);
990 for (j = color_start; j <= color_end; j++) {
991 /* each R, G, or B component is 16 bits;
992 * only use the top 8 bits; skip alpha bytes
993 * up front */
994 get_byte(pb);
995 get_byte(pb);
996 r = get_byte(pb);
997 get_byte(pb);
998 g = get_byte(pb);
999 get_byte(pb);
1000 b = get_byte(pb);
1001 get_byte(pb);
1002 c->palette_control.palette[j] =
1003 (r << 16) | (g << 8) | (b);
1004 }
1005 }
1006
1007 st->codec->palctrl = &c->palette_control;
1008 st->codec->palctrl->palette_changed = 1;
1009 } else
1010 st->codec->palctrl = NULL;
1011
1012 a.size = size;
1013 mov_read_default(c, pb, a);
1014 #endif
1015 } else {
1016 st->codec->codec_id = codec_get_id(mov_audio_tags, format);
1017 if(st->codec->codec_id==CODEC_ID_AMR_NB || st->codec->codec_id==CODEC_ID_AMR_WB) //from TS26.244
1018 {
1019 #ifdef DEBUG
1020 av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
1021 #endif
1022 get_be32(pb);get_be32(pb); //Reserved_8
1023 get_be16(pb);//Reserved_2
1024 get_be16(pb);//Reserved_2
1025 get_be32(pb);//Reserved_4
1026 get_be16(pb);//TimeScale
1027 get_be16(pb);//Reserved_2
1028
1029 //AMRSpecificBox.(10 bytes)
1030
1031 get_be32(pb); //size
1032 get_be32(pb); //type=='damr'
1033 get_be32(pb); //vendor
1034 get_byte(pb); //decoder version
1035 get_be16(pb); //mode_set
1036 get_byte(pb); //mode_change_period
1037 get_byte(pb); //frames_per_sample
1038
1039 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
1040 if(st->codec->codec_id==CODEC_ID_AMR_NB)
1041 {
1042 st->codec->sample_rate=8000;
1043 st->codec->channels=1;
1044 }
1045 else //AMR-WB
1046 {
1047 st->codec->sample_rate=16000;
1048 st->codec->channels=1;
1049 }
1050 st->codec->bits_per_sample=16;
1051 st->codec->bit_rate=0; /*It is not possible to tell this before we have
1052 an audio frame and even then every frame can be different*/
1053 }
1054 else if( st->codec->codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1055 {
1056 //This is some stuff for the hint track, lets ignore it!
1057 //Do some mp4 auto detect.
1058 c->mp4=1;
1059 size-=(16);
1060 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1061 }
1062 else if( st->codec->codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1063 {
1064 MOV_atom_t a;
1065 int mp4_version;
1066
1067 /* Handle mp4 audio tag */
1068 mp4_version=get_be16(pb);/*version*/
1069 get_be16(pb); /*revesion*/
1070 get_be32(pb);
1071 st->codec->channels = get_be16(pb); /* channels */
1072 st->codec->bits_per_sample = get_be16(pb); /* bits per sample */
1073 get_be32(pb);
1074 st->codec->sample_rate = get_be16(pb); /* sample rate, not always correct */
1075 if(st->codec->sample_rate == 1) //nonsese rate? -> ignore
1076 st->codec->sample_rate= 0;
1077
1078 get_be16(pb);
1079 c->mp4=1;
1080
1081 if(mp4_version==1)
1082 {
1083 url_fskip(pb,16);
1084 a.size=size-(16+20+16);
1085 }
1086 else
1087 a.size=size-(16+20);
1088
1089 a.offset=url_ftell(pb);
1090
1091 mov_read_default(c, pb, a);
1092
1093 /* Get correct sample rate from extradata */
1094 if(st->codec->extradata_size) {
1095 const int samplerate_table[] = {
1096 96000, 88200, 64000, 48000, 44100, 32000,
1097 24000, 22050, 16000, 12000, 11025, 8000,
1098 7350, 0, 0, 0
1099 };
1100 unsigned char *px = st->codec->extradata;
1101 // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1102 int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1103 st->codec->sample_rate = samplerate_table[samplerate_index];
1104 st->codec->channels = (px[1] >> 3) & 15;
1105 }
1106 }
1107 else if( st->codec->codec_tag == MKTAG( 'a', 'l', 'a', 'c' ))
1108 {
1109 /* Handle alac audio tag + special extradata */
1110 get_be32(pb); /* version */
1111 get_be32(pb);
1112 st->codec->channels = get_be16(pb); /* channels */
1113 st->codec->bits_per_sample = get_be16(pb); /* bits per sample */
1114 get_be32(pb);
1115 st->codec->sample_rate = get_be16(pb);
1116 get_be16(pb);
1117
1118 /* fetch the 36-byte extradata needed for alac decoding */
1119 st->codec->extradata_size = 36;
1120 st->codec->extradata = (uint8_t*)
1121 av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
1122 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
1123 }
1124 else if(size>=(16+20))
1125 {//16 bytes read, reading atleast 20 more
1126 uint16_t version;
1127 #ifdef DEBUG
1128 av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
1129 #endif
1130 version = get_be16(pb); /* version */
1131 get_be16(pb); /* revision level */
1132 get_be32(pb); /* vendor */
1133
1134 st->codec->channels = get_be16(pb); /* channel count */
1135 st->codec->bits_per_sample = get_be16(pb); /* sample size */
1136
1137 /* handle specific s8 codec */
1138 get_be16(pb); /* compression id = 0*/
1139 get_be16(pb); /* packet size = 0 */
1140
1141 st->codec->sample_rate = ((get_be32(pb) >> 16));
1142 //av_log(NULL, AV_LOG_DEBUG, "CODECID %d %d %.4s\n", st->codec->codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1143
1144 switch (st->codec->codec_id) {
1145 case CODEC_ID_PCM_S16BE:
1146 if (st->codec->bits_per_sample == 8)
1147 st->codec->codec_id = CODEC_ID_PCM_S8;
1148 /* fall */
1149 case CODEC_ID_PCM_U8:
1150 st->codec->bit_rate = st->codec->sample_rate * 8;
1151 break;
1152 default:
1153 ;
1154 }
1155
1156 //Read QT version 1 fields. In version 0 theese dont exist
1157 #ifdef DEBUG
1158 av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1159 av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
1160 #endif
1161 if((version==1) && size>=(16+20+16))
1162 {
1163 get_be32(pb); /* samples per packet */
1164 get_be32(pb); /* bytes per packet */
1165 get_be32(pb); /* bytes per frame */
1166 get_be32(pb); /* bytes per sample */
1167 if(size>(16+20+16))
1168 {
1169 //Optional, additional atom-based fields
1170 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1171 #ifdef DEBUG
1172 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 ),
1173 (format >> 0) & 0xff,
1174 (format >> 8) & 0xff,
1175 (format >> 16) & 0xff,
1176 (format >> 24) & 0xff);
1177 #endif
1178 mov_read_default(c, pb, a);
1179 }
1180 }
1181 else
1182 {
1183 //We should be down to 0 bytes here, but lets make sure.
1184 size-=(16+20);
1185 #ifdef DEBUG
1186 if(size>0)
1187 av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
1188 #endif
1189 url_fskip(pb, size);
1190 }
1191 }
1192 else
1193 {
1194 size-=16;
1195 //Unknown size, but lets do our best and skip the rest.
1196 #ifdef DEBUG
1197 av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
1198 #endif
1199 url_fskip(pb, size);
1200 }
1201 }
1202 }
1203
1204 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
1205 st->codec->sample_rate= sc->time_scale;
1206 }
1207
1208 return 0;
1209 }
1210
1211 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1212 {
1213 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1214 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1215 unsigned int i, entries;
1216
1217 print_atom("stsc", atom);
1218
1219 get_byte(pb); /* version */
1220 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1221
1222 entries = get_be32(pb);
1223
1224 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1225 return -1;
1226
1227 #ifdef DEBUG
1228 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1229 #endif
1230 sc->sample_to_chunk_sz = entries;
1231 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1232 if (!sc->sample_to_chunk)
1233 return -1;
1234 for(i=0; i<entries; i++) {
1235 sc->sample_to_chunk[i].first = get_be32(pb);
1236 sc->sample_to_chunk[i].count = get_be32(pb);
1237 sc->sample_to_chunk[i].id = get_be32(pb);
1238 #ifdef DEBUG
1239 /* 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); */
1240 #endif
1241 }
1242 return 0;
1243 }
1244
1245 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1246 {
1247 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1248 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1249 unsigned int i, entries;
1250
1251 print_atom("stss", atom);
1252
1253 get_byte(pb); /* version */
1254 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1255
1256 entries = get_be32(pb);
1257
1258 if(entries >= UINT_MAX / sizeof(long))
1259 return -1;
1260
1261 sc->keyframe_count = entries;
1262 #ifdef DEBUG
1263 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1264 #endif
1265 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1266 if (!sc->keyframes)
1267 return -1;
1268 for(i=0; i<entries; i++) {
1269 sc->keyframes[i] = get_be32(pb);
1270 #ifdef DEBUG
1271 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1272 #endif
1273 }
1274 return 0;
1275 }
1276
1277 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1278 {
1279 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1280 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1281 unsigned int i, entries;
1282
1283 print_atom("stsz", atom);
1284
1285 get_byte(pb); /* version */
1286 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1287
1288 sc->sample_size = get_be32(pb);
1289 entries = get_be32(pb);
1290 if(entries >= UINT_MAX / sizeof(long))
1291 return -1;
1292
1293 sc->sample_count = entries;
1294 #ifdef DEBUG
1295 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1296 #endif
1297 if(sc->sample_size)
1298 return 0; /* there isn't any table following */
1299 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1300 if (!sc->sample_sizes)
1301 return -1;
1302 for(i=0; i<entries; i++) {
1303 sc->sample_sizes[i] = get_be32(pb);
1304 #ifdef DEBUG
1305 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1306 #endif
1307 }
1308 return 0;
1309 }
1310
1311 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1312 {
1313 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1314 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1315 unsigned int i, entries;
1316 int64_t duration=0;
1317 int64_t total_sample_count=0;
1318
1319 print_atom("stts", atom);
1320
1321 get_byte(pb); /* version */
1322 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1323 entries = get_be32(pb);
1324 if(entries >= UINT_MAX / sizeof(Time2Sample))
1325 return -1;
1326
1327 c->streams[c->fc->nb_streams-1]->stts_count = entries;
1328 c->streams[c->fc->nb_streams-1]->stts_data = av_malloc(entries * sizeof(Time2Sample));
1329
1330 #ifdef DEBUG
1331 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1332 #endif
1333 for(i=0; i<entries; i++) {
1334 int sample_duration;
1335 int sample_count;
1336
1337 sample_count=get_be32(pb);
1338 sample_duration = get_be32(pb);
1339 c->streams[c->fc->nb_streams - 1]->stts_data[i].count= sample_count;
1340 c->streams[c->fc->nb_streams - 1]->stts_data[i].duration= sample_duration;
1341
1342 #ifdef DEBUG
1343 av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1344 #endif
1345 duration+=sample_duration*sample_count;
1346 total_sample_count+=sample_count;
1347 }
1348
1349 st->nb_frames= total_sample_count;
1350 if(duration)
1351 st->duration= duration;
1352 return 0;
1353 }
1354
1355 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1356 {
1357 // AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1358 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1359 unsigned int i, entries;
1360
1361 print_atom("ctts", atom);
1362
1363 get_byte(pb); /* version */
1364 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1365 entries = get_be32(pb);
1366 if(entries >= UINT_MAX / sizeof(Time2Sample))
1367 return -1;
1368
1369 c->streams[c->fc->nb_streams-1]->ctts_count = entries;
1370 c->streams[c->fc->nb_streams-1]->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1371
1372 // #ifdef DEBUG
1373 av_log(NULL, AV_LOG_DEBUG, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1374 // #endif
1375 for(i=0; i<entries; i++) {
1376 c->streams[c->fc->nb_streams - 1]->ctts_data[i].count= get_be32(pb);
1377 c->streams[c->fc->nb_streams - 1]->ctts_data[i].duration= get_be32(pb);
1378 }
1379 return 0;
1380 }
1381
1382 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1383 {
1384 AVStream *st;
1385 MOVStreamContext *sc;
1386
1387 print_atom("trak", atom);
1388
1389 st = av_new_stream(c->fc, c->fc->nb_streams);
1390 if (!st) return -2;
1391 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1392 if (!sc) {
1393 av_free(st);
1394 return -1;
1395 }
1396
1397 sc->sample_to_chunk_index = -1;
1398 st->priv_data = sc;
1399 st->codec->codec_type = CODEC_TYPE_MOV_OTHER;
1400 st->start_time = 0; /* XXX: check */
1401 c->streams[c->fc->nb_streams-1] = sc;
1402
1403 return mov_read_default(c, pb, atom);
1404 }
1405
1406 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1407 {
1408 AVStream *st;
1409
1410 print_atom("tkhd", atom);
1411
1412 st = c->fc->streams[c->fc->nb_streams-1];
1413
1414 get_byte(pb); /* version */
1415
1416 get_byte(pb); get_byte(pb);
1417 get_byte(pb); /* flags */
1418 /*
1419 MOV_TRACK_ENABLED 0x0001
1420 MOV_TRACK_IN_MOVIE 0x0002
1421 MOV_TRACK_IN_PREVIEW 0x0004
1422 MOV_TRACK_IN_POSTER 0x0008
1423 */
1424
1425 get_be32(pb); /* creation time */
1426 get_be32(pb); /* modification time */
1427 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1428 get_be32(pb); /* reserved */
1429 st->start_time = 0; /* check */
1430 get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1431 get_be32(pb); /* reserved */
1432 get_be32(pb); /* reserved */
1433
1434 get_be16(pb); /* layer */
1435 get_be16(pb); /* alternate group */
1436 get_be16(pb); /* volume */
1437 get_be16(pb); /* reserved */
1438
1439 url_fskip(pb, 36); /* display matrix */
1440
1441 /* those are fixed-point */
1442 /*st->codec->width =*/ get_be32(pb) >> 16; /* track width */
1443 /*st->codec->height =*/ get_be32(pb) >> 16; /* track height */
1444
1445 return 0;
1446 }
1447
1448 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1449 /* like the files created with Adobe Premiere 5.0, for samples see */
1450 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1451 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1452 {
1453 int err;
1454
1455 #ifdef DEBUG
1456 print_atom("wide", atom);
1457 debug_indent++;
1458 #endif
1459 if (atom.size < 8)
1460 return 0; /* continue */
1461 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1462 url_fskip(pb, atom.size - 4);
1463 return 0;
1464 }
1465 atom.type = get_le32(pb);
1466 atom.offset += 8;
1467 atom.size -= 8;
1468 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1469 url_fskip(pb, atom.size);
1470 return 0;
1471 }
1472 err = mov_read_mdat(c, pb, atom);
1473 #ifdef DEBUG
1474 debug_indent--;
1475 #endif
1476 return err;
1477 }
1478
1479
1480 #ifdef CONFIG_ZLIB
1481 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1482 {
1483 return -1;
1484 }
1485
1486 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1487 {
1488 ByteIOContext ctx;
1489 uint8_t *cmov_data;
1490 uint8_t *moov_data; /* uncompressed data */
1491 long cmov_len, moov_len;
1492 int ret;
1493
1494 print_atom("cmov", atom);
1495
1496 get_be32(pb); /* dcom atom */
1497 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1498 return -1;
1499 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1500 av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
1501 return -1;
1502 }
1503 get_be32(pb); /* cmvd atom */
1504 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1505 return -1;
1506 moov_len = get_be32(pb); /* uncompressed size */
1507 cmov_len = atom.size - 6 * 4;
1508
1509 cmov_data = (uint8_t *) av_malloc(cmov_len);
1510 if (!cmov_data)
1511 return -1;
1512 moov_data = (uint8_t *) av_malloc(moov_len);
1513 if (!moov_data) {
1514 av_free(cmov_data);
1515 return -1;
1516 }
1517 get_buffer(pb, cmov_data, cmov_len);
1518 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1519 return -1;
1520 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1521 return -1;
1522 ctx.buf_end = ctx.buffer + moov_len;
1523 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1524 atom.offset = 0;
1525 atom.size = moov_len;
1526 #ifdef DEBUG
1527 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1528 #endif
1529 ret = mov_read_default(c, &ctx, atom);
1530 av_free(moov_data);
1531 av_free(cmov_data);
1532
1533 return ret;
1534 }
1535 #endif
1536
1537 /* edit list atom */
1538 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1539 {
1540 int i, edit_count;
1541 print_atom("elst", atom);
1542
1543 get_byte(pb); /* version */
1544 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1545 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1546
1547 for(i=0; i<edit_count; i++){
1548 get_be32(pb); /* Track duration */
1549 get_be32(pb); /* Media time */
1550 get_be32(pb); /* Media rate */
1551 }
1552 #ifdef DEBUG
1553 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);
1554 #endif
1555 return 0;
1556 }
1557
1558 static const MOVParseTableEntry mov_default_parse_table[] = {
1559 /* mp4 atoms */
1560 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1561 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1562 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1563 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1564 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1565 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1566 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1567 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1568 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1569 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1570 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1571 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1572 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1573 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1574 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1575 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1576 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1577 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1578 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1579 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1580 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1581 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1582 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1583 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1584 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1585 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1586 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1587 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1588 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1589 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1590 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1591 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1592 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1593 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1594 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1595 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1596 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1597 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1598 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1599 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1600 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1601 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1602 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1603 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1604 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1605 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1606 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
1607 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1608 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1609 /* extra mp4 */
1610 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1611 /* QT atoms */
1612 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1613 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1614 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1615 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1616 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1617 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1618 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1619 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1620 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1621 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1622 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1623 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1624 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1625 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1626 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1627 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1628 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1629 #ifdef CONFIG_ZLIB
1630 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1631 #else
1632 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1633 #endif
1634 { 0L, mov_read_leaf }
1635 };
1636
1637 static void mov_free_stream_context(MOVStreamContext *sc)
1638 {
1639 if(sc) {
1640 av_freep(&sc->chunk_offsets);
1641 av_freep(&sc->sample_to_chunk);
1642 av_freep(&sc->sample_sizes);
1643 av_freep(&sc->keyframes);
1644 av_freep(&sc->stts_data);
1645 av_freep(&sc->ctts_data);
1646 av_freep(&sc);
1647 }
1648 }
1649
1650 static inline uint32_t mov_to_tag(uint8_t *buf)
1651 {
1652 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1653 }
1654
1655 static inline uint32_t to_be32(uint8_t *buf)
1656 {
1657 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1658 }
1659
1660 /* XXX: is it sufficient ? */
1661 static int mov_probe(AVProbeData *p)
1662 {
1663 unsigned int offset;
1664 uint32_t tag;
1665 int score = 0;
1666
1667 /* check file header */
1668 if (p->buf_size <= 12)
1669 return 0;
1670 offset = 0;
1671 for(;;) {
1672 /* ignore invalid offset */
1673 if ((offset + 8) > (unsigned int)p->buf_size)
1674 return score;
1675 tag = mov_to_tag(p->buf + offset + 4);
1676 switch(tag) {
1677 /* check for obvious tags */
1678 case MKTAG( 'm', 'o', 'o', 'v' ):
1679 case MKTAG( 'm', 'd', 'a', 't' ):
1680 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1681 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1682 return AVPROBE_SCORE_MAX;
1683 /* those are more common words, so rate then a bit less */
1684 case MKTAG( 'w', 'i', 'd', 'e' ):
1685 case MKTAG( 'f', 'r', 'e', 'e' ):
1686 case MKTAG( 'j', 'u', 'n', 'k' ):
1687 case MKTAG( 'p', 'i', 'c', 't' ):
1688 return AVPROBE_SCORE_MAX - 5;
1689 case MKTAG( 'f', 't', 'y', 'p' ):
1690 case MKTAG( 's', 'k', 'i', 'p' ):
1691 case MKTAG( 'u', 'u', 'i', 'd' ):
1692 offset = to_be32(p->buf+offset) + offset;
1693 /* if we only find those cause probedata is too small at least rate them */
1694 score = AVPROBE_SCORE_MAX - 50;
1695 break;
1696 default:
1697 /* unrecognized tag */
1698 return score;
1699 }
1700 }
1701 return score;
1702 }
1703
1704 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1705 {
1706 MOVContext *mov = (MOVContext *) s->priv_data;
1707 ByteIOContext *pb = &s->pb;
1708 int i, j, nb, err;
1709 MOV_atom_t atom = { 0, 0, 0 };
1710
1711 mov->fc = s;
1712 mov->parse_table = mov_default_parse_table;
1713 #if 0
1714 /* XXX: I think we should auto detect */
1715 if(s->iformat->name[1] == 'p')
1716 mov->mp4 = 1;
1717 #endif
1718 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1719 atom.size = url_fsize(pb);
1720 else
1721 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1722
1723 #ifdef DEBUG
1724 av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
1725 #endif
1726
1727 /* check MOV header */
1728 err = mov_read_default(mov, pb, atom);
1729 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1730 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1731 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1732 return -1;
1733 }
1734 #ifdef DEBUG
1735 av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1736 #endif
1737 /* some cleanup : make sure we are on the mdat atom */
1738 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1739 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1740
1741 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1742
1743 #ifdef DEBUG
1744 av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
1745 #endif
1746
1747 #ifdef DEBUG
1748 av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
1749 #endif
1750 mov->total_streams = nb = s->nb_streams;
1751
1752 #if 1
1753 for(i=0; i<s->nb_streams;) {
1754 if(s->streams[i]->codec->codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1755 av_free(s->streams[i]);
1756 for(j=i+1; j<s->nb_streams; j++)
1757 s->streams[j-1] = s->streams[j];
1758 s->nb_streams--;
1759 } else
1760 i++;
1761 }
1762 for(i=0; i<s->nb_streams;i++) {
1763 MOVStreamContext *sc;
1764 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1765 sc->ffindex = i;
1766 sc->is_ff_stream = 1;
1767 }
1768 #endif
1769 #ifdef DEBUG
1770 av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
1771 #endif
1772 return 0;
1773 }
1774
1775 /* Yes, this is ugly... I didn't write the specs of QT :p */
1776 /* XXX:remove useless commented code sometime */
1777 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1778 {
1779 MOVContext *mov = (MOVContext *) s->priv_data;
1780 MOVStreamContext *sc;
1781 int64_t offset = INT64_MAX;
1782 int64_t best_dts = INT64_MAX;
1783 int i, a, b, m;
1784 int size;
1785 int idx;
1786 size = 0x0FFFFFFF;
1787
1788 #ifdef MOV_SPLIT_CHUNKS
1789 if (mov->partial) {
1790 sc = mov->partial;
1791 idx = sc->sample_to_chunk_index;
1792
1793 if (idx < 0) return 0;
1794 #ifdef DEBUG
1795 fprintf(stderr, "sc[ffid %d]->sample_size = %d\n", sc->ffindex, sc->sample_size);
1796 #endif
1797 //size = sc->sample_sizes[sc->current_sample];
1798 // that ain't working...
1799 //size = (sc->sample_size)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1800 size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1801
1802 sc->current_sample++;
1803 sc->left_in_chunk--;
1804
1805 if (sc->left_in_chunk <= 0)
1806 mov->partial = 0;
1807 offset = mov->next_chunk_offset;
1808 /* extract the sample */
1809
1810 goto readchunk;
1811 }
1812 #endif
1813
1814 again:
1815 sc = 0;
1816 if(offset == INT64_MAX)
1817 best_dts= INT64_MAX;
1818 for(i=0; i<mov->total_streams; i++) {
1819 MOVStreamContext *msc = mov->streams[i];
1820
1821 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0){
1822 if (msc->sample_to_time_index < msc->stts_count && mov->ni) {
1823 int64_t dts;
1824 int index= msc->sample_to_time_index;
1825 int sample= msc->sample_to_time_sample;
1826 int time= msc->sample_to_time_time;
1827 int duration = msc->stts_data[index].duration;
1828 int count = msc->stts_data[index].count;
1829 if (sample + count < msc->current_sample) {
1830 sample += count;
1831 time += count*duration;
1832 index ++;
1833 duration = msc->stts_data[index].duration;
1834 }
1835 dts = time + (msc->current_sample-1 - sample) * (int64_t)duration;
1836 dts = av_rescale(dts, AV_TIME_BASE, msc->time_scale);
1837 // av_log(NULL, AV_LOG_DEBUG, "%d %Ld %Ld %Ld \n", i, dts, best_dts, offset);
1838 if(dts < best_dts){
1839 best_dts= dts;
1840 sc = msc;
1841 offset = msc->chunk_offsets[msc->next_chunk];
1842 }
1843 }else{
1844 //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));
1845 if ((msc->chunk_offsets[msc->next_chunk] < offset)) {
1846 sc = msc;
1847 offset = msc->chunk_offsets[msc->next_chunk];
1848 //av_log(NULL, AV_LOG_DEBUG, "SELETED %Ld i:%d\n", offset, i);
1849 }
1850 }
1851 }
1852 }
1853 if (!sc || offset==INT64_MAX)
1854 return -1;
1855
1856 sc->next_chunk++;
1857
1858 if(mov->next_chunk_offset < offset) { /* some meta data */
1859 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1860 mov->next_chunk_offset = offset;
1861 }
1862
1863 //av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1864 if(!sc->is_ff_stream || (s->streams[sc->ffindex]->discard >= AVDISCARD_ALL)) {
1865 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1866 mov->next_chunk_offset = offset;
1867 offset = INT64_MAX;
1868 goto again;
1869 }
1870
1871 /* now get the chunk size... */
1872
1873 for(i=0; i<mov->total_streams; i++) {
1874 MOVStreamContext *msc = mov->streams[i];
1875 if ((msc->next_chunk < msc->chunk_count)
1876 && msc->chunk_offsets[msc->next_chunk] - offset < size
1877 && msc->chunk_offsets[msc->next_chunk] > offset)
1878 size = msc->chunk_offsets[msc->next_chunk] - offset;
1879 }
1880
1881 #ifdef MOV_MINOLTA_FIX
1882 //Make sure that size is according to sample_size (Needed by .mov files
1883 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1884 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1885 //but I have no such movies
1886 if (sc->sample_size > 0) {
1887 int foundsize=0;
1888 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1889 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) )
1890 {
1891 // I can't figure out why for PCM audio sample_size is always 1
1892 // (it should actually be channels*bits_per_second/8) but it is.
1893 AVCodecContext* cod = s->streams[sc->ffindex]->codec;
1894 if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1895 foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1896 else
1897 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1898 }
1899 #ifdef DEBUG
1900 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);
1901 #endif
1902 }
1903 if( (foundsize>0) && (foundsize<size) )
1904 {
1905 #ifdef DEBUG
1906 /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
1907 #endif
1908 size=foundsize;
1909 }
1910 }
1911 #endif //MOV_MINOLTA_FIX
1912
1913 idx = sc->sample_to_chunk_index;
1914 if (idx + 1 < sc->sample_to_chunk_sz && sc->next_chunk >= sc->sample_to_chunk[idx + 1].first)
1915 idx++;
1916 sc->sample_to_chunk_index = idx;
1917 #ifdef MOV_SPLIT_CHUNKS
1918 /* split chunks into samples */
1919 if (sc->sample_size == 0 || sc->sample_size > 100) {
1920 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1921 mov->partial = sc;
1922 /* we'll have to get those samples before next chunk */
1923 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1924 size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1925 }
1926
1927 sc->current_sample++;
1928 }else if(idx + 1 < sc->sample_to_chunk_sz){
1929 sc->current_sample += sc->sample_size * sc->sample_to_chunk[idx].count;
1930 }
1931 #endif
1932
1933 readchunk:
1934 #ifdef DEBUG
1935 av_log(NULL, AV_LOG_DEBUG, "chunk: %lli -> %lli (%i)\n", offset, offset + size, size);
1936 #endif
1937 if(size == 0x0FFFFFFF)
1938 size = mov->mdat_size + mov->mdat_offset - offset;
1939 if(size < 0)
1940 return -1;
1941 if(size == 0)
1942 return -1;
1943 url_fseek(&s->pb, offset, SEEK_SET);
1944
1945 av_get_packet(&s->pb, pkt, size);
1946 pkt->stream_index = sc->ffindex;
1947
1948 // If the keyframes table exists, mark any samples that are in the table as key frames.
1949 // If no table exists, treat very sample as a key frame.
1950 if (sc->keyframes) {
1951 a = 0;
1952 b = sc->keyframe_count - 1;
1953
1954 while (a < b) {
1955 m = (a + b + 1) >> 1;
1956 if (sc->keyframes[m] > sc->current_sample) {
1957 b = m - 1;
1958 } else {
1959 a = m;
1960 }
1961 }
1962
1963 if (sc->keyframes[a] == sc->current_sample)
1964 pkt->flags |= PKT_FLAG_KEY;
1965 }
1966 else
1967 pkt->flags |= PKT_FLAG_KEY;
1968
1969 #ifdef DEBUG
1970 /*
1971 av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %ld) ", pkt->stream_index, pkt->size);
1972 for(i=0; i<8; i++)
1973 av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
1974 for(i=0; i<8; i++)
1975 av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
1976 av_log(NULL, AV_LOG_DEBUG, "\n");
1977 */
1978 #endif
1979
1980 mov->next_chunk_offset = offset + size;
1981
1982 /* find the corresponding dts */
1983 if (sc && sc->sample_to_time_index < sc->stts_count && pkt) {
1984 unsigned int count;
1985 uint64_t dts, pts;
1986 unsigned int duration = sc->stts_data[sc->sample_to_time_index].duration;
1987 count = sc->stts_data[sc->sample_to_time_index].count;
1988 if ((sc->sample_to_time_sample + count) < sc->current_sample) {
1989 sc->sample_to_time_sample += count;
1990 sc->sample_to_time_time += count*duration;
1991 sc->sample_to_time_index ++;
1992 duration = sc->stts_data[sc->sample_to_time_index].duration;
1993 }
1994 dts = sc->sample_to_time_time + (sc->current_sample-1 - sc->sample_to_time_sample) * (int64_t)duration;
1995 /* find the corresponding pts */
1996 if (sc->sample_to_ctime_index < sc->ctts_count) {
1997 int duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
1998 int count = sc->ctts_data[sc->sample_to_ctime_index].count;
1999
2000 if ((sc->sample_to_ctime_sample + count) < sc->current_sample) {
2001 sc->sample_to_ctime_sample += count;
2002 sc->sample_to_ctime_index ++;
2003 duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
2004 }
2005 pts = dts + duration;
2006 }else
2007 pts = dts;
2008 pkt->pts = pts;
2009 pkt->dts = dts;
2010 #ifdef DEBUG
2011 av_log(NULL, AV_LOG_DEBUG, "stream #%d smp #%ld dts = %lld pts = %lld (smp:%ld time:%lld idx:%d ent:%d count:%d dur:%d)\n"
2012 , pkt->stream_index, sc->current_sample-1, pkt->dts, pkt->pts
2013 , sc->sample_to_time_sample
2014 , sc->sample_to_time_time
2015 , sc->sample_to_time_index
2016 , sc->stts_count
2017 , count
2018 , duration);
2019 #endif
2020 }
2021
2022 return 0;
2023 }
2024
2025 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2026 /**
2027 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
2028 */
2029 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2030 {
2031 MOVContext* mov = (MOVContext *) s->priv_data;
2032 MOVStreamContext* sc;
2033 int32_t i, a, b, m;
2034 int64_t start_time;
2035 int32_t seek_sample, sample;
2036 int32_t duration;
2037 int32_t count;
2038 int32_t chunk;
2039 int32_t left_in_chunk;
2040 int64_t chunk_file_offset;
2041 int64_t sample_file_offset;
2042 int32_t first_chunk_sample;
2043 int32_t sample_to_chunk_idx;
2044 int sample_to_time_index;
2045 long sample_to_time_sample = 0;
2046 uint64_t sample_to_time_time = 0;
2047 int mov_idx;
2048
2049 // Find the corresponding mov stream
2050 for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
2051 if (mov->streams[mov_idx]->ffindex == stream_index)
2052 break;
2053 if (mov_idx == mov->total_streams) {
2054 av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
2055 return -1;
2056 }
2057 sc = mov->streams[mov_idx];
2058
2059 // Step 1. Find the edit that contains the requested time (elst)
2060 if (sc->edit_count) {
2061 // FIXME should handle edit list
2062 av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
2063 return -1;
2064 }
2065
2066 // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
2067 #ifdef DEBUG
2068 av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
2069 #endif
2070 start_time = 0; // FIXME use elst atom
2071 sample = 1; // sample are 0 based in table
2072 #ifdef DEBUG
2073 av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
2074 #endif
2075 for (i = 0; i < sc->stts_count; i++) {
2076 count = sc->stts_data[i].count;
2077 duration = sc->stts_data[i].duration;
2078 //av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);
2079 //av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);
2080 if ((start_time + count*duration) > sample_time) {
2081 sample_to_time_time = start_time;
2082 sample_to_time_index = i;
2083 sample_to_time_sample = sample;
2084 sample += (sample_time - start_time) / duration;
2085 break;
2086 }
2087 sample += count;
2088 start_time += count * duration;
2089 }
2090 sample_to_time_time = start_time;
2091 sample_to_time_index = i;
2092 /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
2093 is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
2094
2095 #ifdef DEBUG
2096 av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
2097 #endif
2098 if (sample > sc->sample_count) {
2099 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);
2100 return -1;
2101 }
2102
2103 // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
2104 if (sc->keyframes) {
2105 a = 0;
2106 b = sc->keyframe_count - 1;
2107 while (a < b) {
2108 m = (a + b + 1) >> 1;
2109 if (sc->keyframes[m] > sample) {
2110 b = m - 1;
2111 } else {
2112 a = m;
2113 }
2114 #ifdef DEBUG
2115 // 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);
2116 #endif
2117 }
2118 // for low latency prob: always use the previous keyframe, just uncomment the next line
2119 // if (a) a--;
2120 seek_sample = sc->keyframes[a];
2121 }
2122 else
2123 seek_sample = sample; // else all samples are key frames
2124 #ifdef DEBUG
2125 av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
2126 #endif
2127
2128 // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
2129 for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
2130 b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
2131 if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
2132 break;
2133 first_chunk_sample += b;
2134 }
2135 chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
2136 left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
2137 first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
2138 sample_to_chunk_idx = i;
2139 #ifdef DEBUG
2140 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);
2141 #endif
2142
2143 // Step 5. Find the offset of the chunk using the chunk offset atom
2144 if (!sc->chunk_offsets) {
2145 av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
2146 return -1;
2147 }
2148 if (chunk > sc->chunk_count) {
2149 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);
2150 return -1;
2151 }
2152 chunk_file_offset = sc->chunk_offsets[chunk - 1];
2153 #ifdef DEBUG
2154 av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
2155 #endif
2156
2157 // Step 6. Find the byte offset within the chunk using the sample size atom
2158 sample_file_offset = chunk_file_offset;
2159 if (sc->sample_size)
2160 sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
2161 else {
2162 for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
2163 sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
2164 }
2165 }
2166 #ifdef DEBUG
2167 av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
2168 #endif
2169
2170 // Step 6. Update the parser
2171 mov->partial = sc;
2172 mov->next_chunk_offset = sample_file_offset;
2173 // Update current stream state
2174 sc->current_sample = seek_sample - 1; // zero based
2175 sc->left_in_chunk = left_in_chunk;
2176 sc->next_chunk = chunk; // +1 -1 (zero based)
2177 sc->sample_to_chunk_index = sample_to_chunk_idx;
2178
2179 // Update other streams
2180 for (i = 0; i<mov->total_streams; i++) {
2181 MOVStreamContext *msc;
2182 if (i == mov_idx) continue;
2183 // Find the nearest 'next' chunk
2184 msc = mov->streams[i];
2185 a = 0;
2186 b = msc->chunk_count - 1;
2187 while (a < b) {
2188 m = (a + b + 1) >> 1;
2189 if (msc->chunk_offsets[m] > chunk_file_offset) {
2190 b = m - 1;
2191 } else {
2192 a = m;
2193 }
2194 #ifdef DEBUG
2195 /* av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2196 , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m], i); */
2197 #endif
2198 }
2199 msc->next_chunk = a;
2200 if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2201 msc->next_chunk ++;
2202 #ifdef DEBUG
2203 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]);
2204 #endif
2205 // Compute sample count and index in the sample_to_chunk table (what a pity)
2206 msc->sample_to_chunk_index = 0;
2207 msc->current_sample = 0;
2208 for(; msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2209 && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2210 msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2211 * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2212 }
2213 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;
2214 msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2215 // Find corresponding position in stts (used later to compute dts)
2216 sample = 0;
2217 start_time = 0;
2218 for (msc->sample_to_time_index = 0; msc->sample_to_time_index < msc->stts_count; msc->sample_to_time_index++) {
2219 count = msc->stts_data[msc->sample_to_time_index].count;
2220 duration = msc->stts_data[msc->sample_to_time_index].duration;
2221 if ((sample + count - 1) > msc->current_sample) {
2222 msc->sample_to_time_time = start_time;
2223 msc->sample_to_time_sample = sample;
2224 break;
2225 }
2226 sample += count;
2227 start_time += count * duration;
2228 }
2229 sample = 0;
2230 for (msc->sample_to_ctime_index = 0; msc->sample_to_ctime_index < msc->ctts_count; msc->sample_to_ctime_index++) {
2231 count = msc->ctts_data[msc->sample_to_ctime_index].count;
2232 duration = msc->ctts_data[msc->sample_to_ctime_index].duration;
2233 if ((sample + count - 1) > msc->current_sample) {
2234 msc->sample_to_ctime_sample = sample;
2235 break;
2236 }
2237 sample += count;
2238 }
2239 #ifdef DEBUG
2240 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);
2241 #endif
2242 }
2243 return 0;
2244 }
2245 #endif
2246
2247 static int mov_read_close(AVFormatContext *s)
2248 {
2249 int i;
2250 MOVContext *mov = (MOVContext *) s->priv_data;
2251 for(i=0; i<mov->total_streams; i++)
2252 mov_free_stream_context(mov->streams[i]);
2253 /* free color tabs */
2254 for(i=0; i<mov->ctab_size; i++)
2255 av_freep(&mov->ctab[i]);
2256 av_freep(&mov->ctab);
2257 return 0;
2258 }
2259
2260 static AVInputFormat mov_iformat = {
2261 "mov,mp4,m4a,3gp,3g2",
2262 "QuickTime/MPEG4 format",
2263 sizeof(MOVContext),
2264 mov_probe,
2265 mov_read_header,
2266 mov_read_packet,
2267 mov_read_close,
2268 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2269 mov_read_seek,
2270 #endif
2271 };
2272
2273 int mov_init(void)
2274 {
2275 av_register_input_format(&mov_iformat);
2276 return 0;
2277 }