av_log() patch by (Michel Bardiaux <mbardiaux at peaktime dot be>)
[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 #include "avformat.h"
20 #include "avi.h"
21
22 #ifdef CONFIG_ZLIB
23 #include <zlib.h>
24 #endif
25
26 /*
27 * First version by Francois Revol revol@free.fr
28 *
29 * Features and limitations:
30 * - reads most of the QT files I have (at least the structure),
31 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
32 * FIXED, Francois Revol, 07/17/2002
33 * - ffmpeg has nearly none of the usual QuickTime codecs,
34 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
35 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
36 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
37 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
38 * http://mpeg.telecomitalialab.com/faq.htm
39 * - the code is quite ugly... maybe I won't do it recursive next time :-)
40 *
41 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
42 * when coding this :) (it's a writer anyway)
43 *
44 * Reference documents:
45 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
46 * Apple:
47 * http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
48 * http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
49 * QuickTime is a trademark of Apple (AFAIK :))
50 */
51
52 //#define DEBUG
53 #ifdef DEBUG
54 #include <stdio.h>
55 #include <fcntl.h>
56 #endif
57
58 #include "qtpalette.h"
59
60 /* allows chunk splitting - should work now... */
61 /* in case you can't read a file, try commenting */
62 #define MOV_SPLIT_CHUNKS
63
64 /* Special handling for movies created with Minolta Dimaxe Xi*/
65 /* this fix should not interfere with other .mov files, but just in case*/
66 #define MOV_MINOLTA_FIX
67
68 /* some streams in QT (and in MP4 mostly) aren't either video nor audio */
69 /* so we first list them as this, then clean up the list of streams we give back, */
70 /* getting rid of these */
71 #define CODEC_TYPE_MOV_OTHER (enum CodecType) 2
72
73 static const CodecTag mov_video_tags[] = {
74 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
75 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
76 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
77 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
78 /* Graphics */
79 /* Animation */
80 /* Apple video */
81 /* Kodak Photo CD */
82 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
83 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
84 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
85 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
86 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
87 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
88 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
89 /* Sorenson video */
90 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
91 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
92 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
93 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
94 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
95 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
96 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
97 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
98 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
99 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
100 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
101 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
102 /* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
103 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
104 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
105 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
106 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
107 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
108 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
109 { CODEC_ID_NONE, 0 },
110 };
111
112 static const CodecTag mov_audio_tags[] = {
113 /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
114 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
115 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
116 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
117 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
118 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
119 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
120 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
121 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
122 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
123
124 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
125 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
126 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
127 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
128 /* MP4 tags */
129 { CODEC_ID_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
130 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
131 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
132 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
133 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
134 { CODEC_ID_NONE, 0 },
135 };
136
137 /* the QuickTime file format is quite convoluted...
138 * it has lots of index tables, each indexing something in another one...
139 * Here we just use what is needed to read the chunks
140 */
141
142 typedef struct MOV_sample_to_chunk_tbl {
143 long first;
144 long count;
145 long id;
146 } MOV_sample_to_chunk_tbl;
147
148 typedef struct {
149 uint32_t type;
150 int64_t offset;
151 int64_t size; /* total size (excluding the size and type fields) */
152 } MOV_atom_t;
153
154 typedef struct {
155 int seed;
156 int flags;
157 int size;
158 void* clrs;
159 } MOV_ctab_t;
160
161 typedef struct {
162 uint8_t version;
163 uint32_t flags; // 24bit
164
165 /* 0x03 ESDescrTag */
166 uint16_t es_id;
167 #define MP4ODescrTag 0x01
168 #define MP4IODescrTag 0x02
169 #define MP4ESDescrTag 0x03
170 #define MP4DecConfigDescrTag 0x04
171 #define MP4DecSpecificDescrTag 0x05
172 #define MP4SLConfigDescrTag 0x06
173 #define MP4ContentIdDescrTag 0x07
174 #define MP4SupplContentIdDescrTag 0x08
175 #define MP4IPIPtrDescrTag 0x09
176 #define MP4IPMPPtrDescrTag 0x0A
177 #define MP4IPMPDescrTag 0x0B
178 #define MP4RegistrationDescrTag 0x0D
179 #define MP4ESIDIncDescrTag 0x0E
180 #define MP4ESIDRefDescrTag 0x0F
181 #define MP4FileIODescrTag 0x10
182 #define MP4FileODescrTag 0x11
183 #define MP4ExtProfileLevelDescrTag 0x13
184 #define MP4ExtDescrTagsStart 0x80
185 #define MP4ExtDescrTagsEnd 0xFE
186 uint8_t stream_priority;
187
188 /* 0x04 DecConfigDescrTag */
189 uint8_t object_type_id;
190 uint8_t stream_type;
191 /* XXX: really streamType is
192 * only 6bit, followed by:
193 * 1bit upStream
194 * 1bit reserved
195 */
196 uint32_t buffer_size_db; // 24
197 uint32_t max_bitrate;
198 uint32_t avg_bitrate;
199
200 /* 0x05 DecSpecificDescrTag */
201 uint8_t decoder_cfg_len;
202 uint8_t *decoder_cfg;
203
204 /* 0x06 SLConfigDescrTag */
205 uint8_t sl_config_len;
206 uint8_t *sl_config;
207 } MOV_esds_t;
208
209 struct MOVParseTableEntry;
210
211 typedef struct MOVStreamContext {
212 int ffindex; /* the ffmpeg stream id */
213 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
214 long next_chunk;
215 long chunk_count;
216 int64_t *chunk_offsets;
217 long sample_to_chunk_sz;
218 MOV_sample_to_chunk_tbl *sample_to_chunk;
219 long sample_to_chunk_index;
220 long sample_size;
221 long sample_count;
222 long *sample_sizes;
223 int time_scale;
224 long current_sample;
225 long left_in_chunk; /* how many samples before next chunk */
226 /* specific MPEG4 header which is added at the beginning of the stream */
227 int header_len;
228 uint8_t *header_data;
229 MOV_esds_t esds;
230 } MOVStreamContext;
231
232 typedef struct MOVContext {
233 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) */
234 AVFormatContext *fc;
235 int time_scale;
236 int duration; /* duration of the longest track */
237 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
238 int found_mdat; /* we suppose we have enough data to read the file */
239 int64_t mdat_size;
240 int64_t mdat_offset;
241 int total_streams;
242 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
243 * but we need the info to be able to skip data from those streams in the 'mdat' section
244 */
245 MOVStreamContext *streams[MAX_STREAMS];
246
247 int64_t next_chunk_offset;
248 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
249 int ctab_size;
250 MOV_ctab_t **ctab; /* color tables */
251 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
252 /* NOTE: for recursion save to/ restore from local variable! */
253
254 AVPaletteControl palette_control;
255 } MOVContext;
256
257
258 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
259
260 /* those functions parse an atom */
261 /* return code:
262 1: found what I wanted, exit
263 0: continue to parse next atom
264 -1: error occured, exit
265 */
266 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
267
268 /* links atom IDs to parse functions */
269 typedef struct MOVParseTableEntry {
270 uint32_t type;
271 mov_parse_function func;
272 } MOVParseTableEntry;
273
274 #ifdef DEBUG
275 /*
276 * XXX: static sux, even more in a multithreaded environment...
277 * Avoid them. This is here just to help debugging.
278 */
279 static int debug_indent = 0;
280 void print_atom(const char *str, MOV_atom_t atom)
281 {
282 unsigned int tag, i;
283 tag = (unsigned int) atom.type;
284 i=debug_indent;
285 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
286 while(i--)
287 printf("|");
288 printf("parse:");
289 printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
290 str, tag & 0xff,
291 (tag >> 8) & 0xff,
292 (tag >> 16) & 0xff,
293 (tag >> 24) & 0xff,
294 (unsigned int)atom.offset,
295 (unsigned int)atom.size);
296 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
297 }
298 #else
299 #define print_atom(a,b)
300 #endif
301
302
303 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
304 {
305 print_atom("leaf", atom);
306
307 if (atom.size>1)
308 url_fskip(pb, atom.size);
309 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
310 return 0;
311 }
312
313 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
314 {
315 int64_t total_size = 0;
316 MOV_atom_t a;
317 int i;
318 int err = 0;
319
320 #ifdef DEBUG
321 print_atom("default", atom);
322 debug_indent++;
323 #endif
324
325 a.offset = atom.offset;
326
327 if (atom.size < 0)
328 atom.size = 0x7fffffffffffffffLL;
329 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
330 a.size = atom.size;
331 a.type=0L;
332 if(atom.size >= 8) {
333 a.size = get_be32(pb);
334 a.type = get_le32(pb);
335 }
336 total_size += 8;
337 a.offset += 8;
338 //printf("type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
339 if (a.size == 1) { /* 64 bit extended size */
340 a.size = get_be64(pb) - 8;
341 a.offset += 8;
342 total_size += 8;
343 }
344 if (a.size == 0) {
345 a.size = atom.size - total_size;
346 if (a.size <= 8)
347 break;
348 }
349 for (i = 0; c->parse_table[i].type != 0L
350 && c->parse_table[i].type != a.type; i++)
351 /* empty */;
352
353 a.size -= 8;
354 // printf(" i=%ld\n", i);
355 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
356 // url_seek(pb, atom.offset+atom.size, SEEK_SET);
357 #ifdef DEBUG
358 print_atom("unknown", a);
359 #endif
360 url_fskip(pb, a.size);
361 } else {
362 #ifdef DEBUG
363 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
364 //print_atom(b, type, offset, size);
365 #endif
366 err = (c->parse_table[i].func)(c, pb, a);
367 }
368
369 a.offset += a.size;
370 total_size += a.size;
371 }
372
373 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
374 //printf("RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
375 url_fskip(pb, atom.size - total_size);
376 }
377
378 #ifdef DEBUG
379 debug_indent--;
380 #endif
381 return err;
382 }
383
384 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
385 {
386 unsigned int len;
387 MOV_ctab_t *t;
388 //url_fskip(pb, atom.size); // for now
389 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
390 t = c->ctab[c->ctab_size];
391 t->seed = get_be32(pb);
392 t->flags = get_be16(pb);
393 t->size = get_be16(pb) + 1;
394 len = 2 * t->size * 4;
395 if (len > 0) {
396 t->clrs = av_malloc(len); // 16bit A R G B
397 if (t->clrs)
398 get_buffer(pb, t->clrs, len);
399 }
400
401 return 0;
402 }
403
404 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
405 {
406 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
407 int len = 0;
408 uint32_t type;
409 uint32_t ctype;
410
411 print_atom("hdlr", atom);
412
413 get_byte(pb); /* version */
414 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
415
416 /* component type */
417 ctype = get_le32(pb);
418 type = get_le32(pb); /* component subtype */
419
420 #ifdef DEBUG
421 printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
422 printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
423 #endif
424 #ifdef DEBUG
425 /* XXX: yeah this is ugly... */
426 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
427 if(type == MKTAG('v', 'i', 'd', 'e'))
428 puts("hdlr: vide");
429 else if(type == MKTAG('s', 'o', 'u', 'n'))
430 puts("hdlr: soun");
431 } else if(ctype == 0) { /* MP4 */
432 if(type == MKTAG('v', 'i', 'd', 'e'))
433 puts("hdlr: vide");
434 else if(type == MKTAG('s', 'o', 'u', 'n'))
435 puts("hdlr: soun");
436 else if(type == MKTAG('o', 'd', 's', 'm'))
437 puts("hdlr: odsm");
438 else if(type == MKTAG('s', 'd', 's', 'm'))
439 puts("hdlr: sdsm");
440 } else puts("hdlr: meta");
441 #endif
442
443 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
444 /* helps parsing the string hereafter... */
445 c->mp4 = 0;
446 if(type == MKTAG('v', 'i', 'd', 'e'))
447 st->codec.codec_type = CODEC_TYPE_VIDEO;
448 else if(type == MKTAG('s', 'o', 'u', 'n'))
449 st->codec.codec_type = CODEC_TYPE_AUDIO;
450 } else if(ctype == 0) { /* MP4 */
451 /* helps parsing the string hereafter... */
452 c->mp4 = 1;
453 if(type == MKTAG('v', 'i', 'd', 'e'))
454 st->codec.codec_type = CODEC_TYPE_VIDEO;
455 else if(type == MKTAG('s', 'o', 'u', 'n'))
456 st->codec.codec_type = CODEC_TYPE_AUDIO;
457 }
458 get_be32(pb); /* component manufacture */
459 get_be32(pb); /* component flags */
460 get_be32(pb); /* component flags mask */
461
462 if(atom.size <= 24)
463 return 0; /* nothing left to read */
464 /* XXX: MP4 uses a C string, not a pascal one */
465 /* component name */
466
467 if(c->mp4) {
468 /* .mp4: C string */
469 while(get_byte(pb) && (++len < (atom.size - 24)));
470 } else {
471 /* .mov: PASCAL string */
472 #ifdef DEBUG
473 char* buf;
474 #endif
475 len = get_byte(pb);
476 #ifdef DEBUG
477 buf = (uint8_t*) av_malloc(len+1);
478 if (buf) {
479 get_buffer(pb, buf, len);
480 buf[len] = '\0';
481 printf("**buf='%s'\n", buf);
482 av_free(buf);
483 } else
484 #endif
485 url_fskip(pb, len);
486 }
487
488 return 0;
489 }
490
491 static int mov_mp4_read_descr_len(ByteIOContext *pb)
492 {
493 int len = 0;
494 int count = 4;
495 while (count--) {
496 int c = get_byte(pb);
497 len = (len << 7) | (c & 0x7f);
498 if (!(c & 0x80))
499 break;
500 }
501 return len;
502 }
503
504 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
505 {
506 int len;
507 *tag = get_byte(pb);
508 len = mov_mp4_read_descr_len(pb);
509 #ifdef DEBUG
510 printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
511 #endif
512 return len;
513 }
514
515 static inline unsigned int get_be24(ByteIOContext *s)
516 {
517 unsigned int val;
518 val = get_byte(s) << 16;
519 val |= get_byte(s) << 8;
520 val |= get_byte(s);
521 return val;
522 }
523
524 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
525 {
526 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
527 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
528 int64_t start_pos = url_ftell(pb);
529 int tag, len;
530
531 print_atom("esds", atom);
532
533 /* Well, broken but suffisant for some MP4 streams */
534 get_be32(pb); /* version + flags */
535 len = mov_mp4_read_descr(pb, &tag);
536 if (tag == MP4ESDescrTag) {
537 get_be16(pb); /* ID */
538 get_byte(pb); /* priority */
539 } else
540 get_be16(pb); /* ID */
541
542 len = mov_mp4_read_descr(pb, &tag);
543 if (tag == MP4DecConfigDescrTag) {
544 sc->esds.object_type_id = get_byte(pb);
545 sc->esds.stream_type = get_byte(pb);
546 sc->esds.buffer_size_db = get_be24(pb);
547 sc->esds.max_bitrate = get_be32(pb);
548 sc->esds.avg_bitrate = get_be32(pb);
549
550 len = mov_mp4_read_descr(pb, &tag);
551 //printf("LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
552 if (tag == MP4DecSpecificDescrTag) {
553 #ifdef DEBUG
554 printf("Specific MPEG4 header len=%d\n", len);
555 #endif
556 st->codec.extradata = (uint8_t*) av_mallocz(len);
557 if (st->codec.extradata) {
558 get_buffer(pb, st->codec.extradata, len);
559 st->codec.extradata_size = len;
560 }
561 }
562 }
563 /* in any case, skip garbage */
564 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
565 return 0;
566 }
567
568 /* this atom contains actual media data */
569 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
570 {
571 print_atom("mdat", atom);
572
573 if(atom.size == 0) /* wrong one (MP4) */
574 return 0;
575 c->found_mdat=1;
576 c->mdat_offset = atom.offset;
577 c->mdat_size = atom.size;
578 if(c->found_moov)
579 return 1; /* found both, just go */
580 url_fskip(pb, atom.size);
581 return 0; /* now go for moov */
582 }
583
584 /* this atom should contain all header atoms */
585 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
586 {
587 int err;
588
589 print_atom("moov", atom);
590
591 err = mov_read_default(c, pb, atom);
592 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
593 /* so we don't parse the whole file if over a network */
594 c->found_moov=1;
595 if(c->found_mdat)
596 return 1; /* found both, just go */
597 return 0; /* now go for mdat */
598 }
599
600
601 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
602 {
603 print_atom("mdhd", atom);
604
605 get_byte(pb); /* version */
606
607 get_byte(pb); get_byte(pb);
608 get_byte(pb); /* flags */
609
610 get_be32(pb); /* creation time */
611 get_be32(pb); /* modification time */
612
613 c->streams[c->total_streams]->time_scale = get_be32(pb);
614
615 #ifdef DEBUG
616 printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
617 #endif
618 get_be32(pb); /* duration */
619
620 get_be16(pb); /* language */
621 get_be16(pb); /* quality */
622
623 return 0;
624 }
625
626 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
627 {
628 print_atom("mvhd", atom);
629
630 get_byte(pb); /* version */
631 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
632
633 get_be32(pb); /* creation time */
634 get_be32(pb); /* modification time */
635 c->time_scale = get_be32(pb); /* time scale */
636 #ifdef DEBUG
637 printf("time scale = %i\n", c->time_scale);
638 #endif
639 c->duration = get_be32(pb); /* duration */
640 get_be32(pb); /* preferred scale */
641
642 get_be16(pb); /* preferred volume */
643
644 url_fskip(pb, 10); /* reserved */
645
646 url_fskip(pb, 36); /* display matrix */
647
648 get_be32(pb); /* preview time */
649 get_be32(pb); /* preview duration */
650 get_be32(pb); /* poster time */
651 get_be32(pb); /* selection time */
652 get_be32(pb); /* selection duration */
653 get_be32(pb); /* current time */
654 get_be32(pb); /* next track ID */
655
656 return 0;
657 }
658
659 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
660 {
661 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
662
663 // currently SVQ3 decoder expect full STSD header - so let's fake it
664 // this should be fixed and just SMI header should be passed
665 av_free(st->codec.extradata);
666 st->codec.extradata_size = 0x5a + atom.size;
667 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
668
669 if (st->codec.extradata) {
670 strcpy(st->codec.extradata, "SVQ3"); // fake
671 get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
672 //printf("Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
673 } else
674 url_fskip(pb, atom.size);
675
676 return 0;
677 }
678
679 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
680 {
681 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
682 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
683 int entries, i;
684
685 print_atom("stco", atom);
686
687 get_byte(pb); /* version */
688 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
689
690 entries = get_be32(pb);
691 sc->chunk_count = entries;
692 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
693 if (!sc->chunk_offsets)
694 return -1;
695 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
696 for(i=0; i<entries; i++) {
697 sc->chunk_offsets[i] = get_be32(pb);
698 }
699 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
700 for(i=0; i<entries; i++) {
701 sc->chunk_offsets[i] = get_be64(pb);
702 }
703 } else
704 return -1;
705 #ifdef DEBUG
706 /*
707 for(i=0; i<entries; i++) {
708 printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
709 }
710 */
711 #endif
712 return 0;
713 }
714
715 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
716 {
717 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
718 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
719 int entries, frames_per_sample;
720 uint32_t format;
721
722 /* for palette traversal */
723 int color_depth;
724 int color_start;
725 int color_count;
726 int color_end;
727 int color_index;
728 int color_dec;
729 int color_greyscale;
730 unsigned char *color_table;
731 int j;
732 unsigned char r, g, b;
733
734 print_atom("stsd", atom);
735
736 get_byte(pb); /* version */
737 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
738
739 entries = get_be32(pb);
740
741 while(entries--) { //Parsing Sample description table
742 enum CodecID id;
743 int size = get_be32(pb); /* size */
744 format = get_le32(pb); /* data format */
745
746 get_be32(pb); /* reserved */
747 get_be16(pb); /* reserved */
748 get_be16(pb); /* index */
749
750 /* for MPEG4: set codec type by looking for it */
751 id = codec_get_id(mov_video_tags, format);
752 if (id >= 0) {
753 AVCodec *codec;
754 codec = avcodec_find_decoder(id);
755 if (codec)
756 st->codec.codec_type = codec->type;
757 }
758 #ifdef DEBUG
759 printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
760 size,
761 (format >> 0) & 0xff,
762 (format >> 8) & 0xff,
763 (format >> 16) & 0xff,
764 (format >> 24) & 0xff,
765 st->codec.codec_type);
766 #endif
767 st->codec.codec_tag = format;
768 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
769 MOV_atom_t a = { 0, 0, 0 };
770 st->codec.codec_id = id;
771 get_be16(pb); /* version */
772 get_be16(pb); /* revision level */
773 get_be32(pb); /* vendor */
774 get_be32(pb); /* temporal quality */
775 get_be32(pb); /* spacial quality */
776 st->codec.width = get_be16(pb); /* width */
777 st->codec.height = get_be16(pb); /* height */
778 #if 1
779 if (st->codec.codec_id == CODEC_ID_MPEG4) {
780 /* in some MPEG4 the width/height are not correct, so
781 we ignore this info */
782 st->codec.width = 0;
783 st->codec.height = 0;
784 }
785 #endif
786 get_be32(pb); /* horiz resolution */
787 get_be32(pb); /* vert resolution */
788 get_be32(pb); /* data size, always 0 */
789 frames_per_sample = get_be16(pb); /* frames per samples */
790 #ifdef DEBUG
791 printf("frames/samples = %d\n", frames_per_sample);
792 #endif
793 get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
794
795 st->codec.bits_per_sample = get_be16(pb); /* depth */
796 st->codec.color_table_id = get_be16(pb); /* colortable id */
797
798 /* These are set in mov_read_stts and might already be set!
799 st->codec.frame_rate = 25;
800 st->codec.frame_rate_base = 1;
801 */
802 size -= (16+8*4+2+32+2*2);
803 #if 0
804 while (size >= 8) {
805 MOV_atom_t a;
806 int64_t start_pos;
807
808 a.size = get_be32(pb);
809 a.type = get_le32(pb);
810 size -= 8;
811 #ifdef DEBUG
812 printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
813 (a.type >> 0) & 0xff,
814 (a.type >> 8) & 0xff,
815 (a.type >> 16) & 0xff,
816 (a.type >> 24) & 0xff,
817 a.size, size);
818 #endif
819 start_pos = url_ftell(pb);
820
821 switch(a.type) {
822 case MKTAG('e', 's', 'd', 's'):
823 {
824 int tag, len;
825 /* Well, broken but suffisant for some MP4 streams */
826 get_be32(pb); /* version + flags */
827 len = mov_mp4_read_descr(pb, &tag);
828 if (tag == 0x03) {
829 /* MP4ESDescrTag */
830 get_be16(pb); /* ID */
831 get_byte(pb); /* priority */
832 len = mov_mp4_read_descr(pb, &tag);
833 if (tag != 0x04)
834 goto fail;
835 /* MP4DecConfigDescrTag */
836 get_byte(pb); /* objectTypeId */
837 get_be32(pb); /* streamType + buffer size */
838 get_be32(pb); /* max bit rate */
839 get_be32(pb); /* avg bit rate */
840 len = mov_mp4_read_descr(pb, &tag);
841 if (tag != 0x05)
842 goto fail;
843 /* MP4DecSpecificDescrTag */
844 #ifdef DEBUG
845 printf("Specific MPEG4 header len=%d\n", len);
846 #endif
847 sc->header_data = av_mallocz(len);
848 if (sc->header_data) {
849 get_buffer(pb, sc->header_data, len);
850 sc->header_len = len;
851 }
852 }
853 /* in any case, skip garbage */
854 }
855 break;
856 default:
857 break;
858 }
859 fail:
860 printf("ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
861 if (atom.size > 8) {
862 url_fskip(pb, (atom.size - 8) -
863 ((url_ftell(pb) - start_pos)));
864 size -= atom.size - 8;
865 }
866 }
867 if (size > 0) {
868 /* unknown extension */
869 url_fskip(pb, size);
870 }
871 #else
872
873 /* figure out the palette situation */
874 color_depth = st->codec.bits_per_sample & 0x1F;
875 color_greyscale = st->codec.bits_per_sample & 0x20;
876
877 /* if the depth is 2, 4, or 8 bpp, file is palettized */
878 if ((color_depth == 2) || (color_depth == 4) ||
879 (color_depth == 8)) {
880
881 if (color_greyscale) {
882
883 /* compute the greyscale palette */
884 color_count = 1 << color_depth;
885 color_index = 255;
886 color_dec = 256 / (color_count - 1);
887 for (j = 0; j < color_count; j++) {
888 r = g = b = color_index;
889 c->palette_control.palette[j] =
890 (r << 16) | (g << 8) | (b);
891 color_index -= color_dec;
892 if (color_index < 0)
893 color_index = 0;
894 }
895
896 } else if (st->codec.color_table_id & 0x08) {
897
898 /* if flag bit 3 is set, use the default palette */
899 color_count = 1 << color_depth;
900 if (color_depth == 2)
901 color_table = qt_default_palette_4;
902 else if (color_depth == 4)
903 color_table = qt_default_palette_16;
904 else
905 color_table = qt_default_palette_256;
906
907 for (j = 0; j < color_count; j++) {
908 r = color_table[j * 4 + 0];
909 g = color_table[j * 4 + 1];
910 b = color_table[j * 4 + 2];
911 c->palette_control.palette[j] =
912 (r << 16) | (g << 8) | (b);
913 }
914
915 } else {
916
917 /* load the palette from the file */
918 color_start = get_be32(pb);
919 color_count = get_be16(pb);
920 color_end = get_be16(pb);
921 for (j = color_start; j <= color_end; j++) {
922 /* each R, G, or B component is 16 bits;
923 * only use the top 8 bits; skip alpha bytes
924 * up front */
925 get_byte(pb);
926 get_byte(pb);
927 r = get_byte(pb);
928 get_byte(pb);
929 g = get_byte(pb);
930 get_byte(pb);
931 b = get_byte(pb);
932 get_byte(pb);
933 c->palette_control.palette[j] =
934 (r << 16) | (g << 8) | (b);
935 }
936 }
937
938 st->codec.palctrl = &c->palette_control;
939 st->codec.palctrl->palette_changed = 1;
940 } else
941 st->codec.palctrl = NULL;
942
943 a.size = size;
944 mov_read_default(c, pb, a);
945 #endif
946 } else {
947 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
948 if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
949 {
950 #ifdef DEBUG
951 printf("AMR-NB or AMR-WB audio identified!!\n");
952 #endif
953 get_be32(pb);get_be32(pb); //Reserved_8
954 get_be16(pb);//Reserved_2
955 get_be16(pb);//Reserved_2
956 get_be32(pb);//Reserved_4
957 get_be16(pb);//TimeScale
958 get_be16(pb);//Reserved_2
959
960 //AMRSpecificBox.(10 bytes)
961
962 get_be32(pb); //size
963 get_be32(pb); //type=='damr'
964 get_be32(pb); //vendor
965 get_byte(pb); //decoder version
966 get_be16(pb); //mode_set
967 get_byte(pb); //mode_change_period
968 get_byte(pb); //frames_per_sample
969
970 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
971 if(st->codec.codec_id==CODEC_ID_AMR_NB)
972 {
973 st->codec.sample_rate=8000;
974 st->codec.channels=1;
975 }
976 else //AMR-WB
977 {
978 st->codec.sample_rate=16000;
979 st->codec.channels=1;
980 }
981 st->codec.bits_per_sample=16;
982 st->codec.bit_rate=0; /*It is not possible to tell this before we have
983 an audio frame and even then every frame can be different*/
984 }
985 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
986 {
987 //This is some stuff for the hint track, lets ignore it!
988 //Do some mp4 auto detect.
989 c->mp4=1;
990 size-=(16);
991 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
992 }
993 else if(size>=(16+20))
994 {//16 bytes read, reading atleast 20 more
995 #ifdef DEBUG
996 printf("audio size=0x%X\n",size);
997 #endif
998 uint16_t version = get_be16(pb); /* version */
999 get_be16(pb); /* revision level */
1000 get_be32(pb); /* vendor */
1001
1002 st->codec.channels = get_be16(pb); /* channel count */
1003 st->codec.bits_per_sample = get_be16(pb); /* sample size */
1004
1005 /* handle specific s8 codec */
1006 get_be16(pb); /* compression id = 0*/
1007 get_be16(pb); /* packet size = 0 */
1008
1009 st->codec.sample_rate = ((get_be32(pb) >> 16));
1010 //printf("CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1011
1012 switch (st->codec.codec_id) {
1013 case CODEC_ID_PCM_S16BE:
1014 if (st->codec.bits_per_sample == 8)
1015 st->codec.codec_id = CODEC_ID_PCM_S8;
1016 /* fall */
1017 case CODEC_ID_PCM_U8:
1018 st->codec.bit_rate = st->codec.sample_rate * 8;
1019 break;
1020 default:
1021 ;
1022 }
1023
1024 //Read QT version 1 fields. In version 0 theese dont exist
1025 #ifdef DEBUG
1026 printf("version =%d mp4=%d\n",version,c->mp4);
1027 printf("size-(16+20+16)=%d\n",size-(16+20+16));
1028 #endif
1029 if((version==1) && size>=(16+20+16))
1030 {
1031 get_be32(pb); /* samples per packet */
1032 get_be32(pb); /* bytes per packet */
1033 get_be32(pb); /* bytes per frame */
1034 get_be32(pb); /* bytes per sample */
1035 if(size>(16+20+16))
1036 {
1037 //Optional, additional atom-based fields
1038 #ifdef DEBUG
1039 printf("offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
1040 (format >> 0) & 0xff,
1041 (format >> 8) & 0xff,
1042 (format >> 16) & 0xff,
1043 (format >> 24) & 0xff);
1044 #endif
1045 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1046 mov_read_default(c, pb, a);
1047 }
1048 }
1049 else
1050 {
1051 //We should be down to 0 bytes here, but lets make sure.
1052 size-=(16+20);
1053 #ifdef DEBUG
1054 if(size>0)
1055 printf("skipping 0x%X bytes\n",size-(16+20));
1056 #endif
1057 url_fskip(pb, size);
1058 }
1059 }
1060 else
1061 {
1062 size-=16;
1063 //Unknown size, but lets do our best and skip the rest.
1064 #ifdef DEBUG
1065 printf("Strange size, skipping 0x%X bytes\n",size);
1066 #endif
1067 url_fskip(pb, size);
1068 }
1069 }
1070 }
1071
1072 return 0;
1073 }
1074
1075 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1076 {
1077 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1078 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1079 int entries, i;
1080
1081 print_atom("stsc", atom);
1082
1083 get_byte(pb); /* version */
1084 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1085
1086 entries = get_be32(pb);
1087 #ifdef DEBUG
1088 printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1089 #endif
1090 sc->sample_to_chunk_sz = entries;
1091 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1092 if (!sc->sample_to_chunk)
1093 return -1;
1094 for(i=0; i<entries; i++) {
1095 sc->sample_to_chunk[i].first = get_be32(pb);
1096 sc->sample_to_chunk[i].count = get_be32(pb);
1097 sc->sample_to_chunk[i].id = get_be32(pb);
1098 #ifdef DEBUG
1099 /* printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1100 #endif
1101 }
1102 return 0;
1103 }
1104
1105 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1106 {
1107 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1108 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1109 int entries, i;
1110
1111 print_atom("stsz", atom);
1112
1113 get_byte(pb); /* version */
1114 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1115
1116 sc->sample_size = get_be32(pb);
1117 entries = get_be32(pb);
1118 sc->sample_count = entries;
1119 #ifdef DEBUG
1120 printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1121 #endif
1122 if(sc->sample_size)
1123 return 0; /* there isn't any table following */
1124 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1125 if (!sc->sample_sizes)
1126 return -1;
1127 for(i=0; i<entries; i++) {
1128 sc->sample_sizes[i] = get_be32(pb);
1129 #ifdef DEBUG
1130 /* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1131 #endif
1132 }
1133 return 0;
1134 }
1135
1136 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1137 {
1138 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1139 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1140 int entries, i;
1141 int duration=0;
1142 int total_sample_count=0;
1143
1144 print_atom("stts", atom);
1145
1146 get_byte(pb); /* version */
1147 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1148 entries = get_be32(pb);
1149
1150
1151 #ifdef DEBUG
1152 printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1153 #endif
1154 for(i=0; i<entries; i++) {
1155 int sample_duration;
1156 int sample_count;
1157
1158 sample_count=get_be32(pb);
1159 sample_duration = get_be32(pb);
1160 #ifdef DEBUG
1161 printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1162 #endif
1163 duration+=sample_duration*sample_count;
1164 total_sample_count+=sample_count;
1165
1166 #if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1167
1168 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1169 st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1170 st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1171 #ifdef DEBUG
1172 printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1173 #endif
1174 }
1175 #endif
1176 }
1177
1178 #define MAX(a,b) a>b?a:b
1179 #define MIN(a,b) a>b?b:a
1180 /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1181 if(duration>0)
1182 {
1183 //Find greatest common divisor to avoid overflow using the Euclidean Algorithm...
1184 uint32_t max=MAX(duration,total_sample_count);
1185 uint32_t min=MIN(duration,total_sample_count);
1186 uint32_t spare=max%min;
1187
1188 while(spare!=0)
1189 {
1190 max=min;
1191 min=spare;
1192 spare=max%min;
1193 }
1194
1195 duration/=min;
1196 total_sample_count/=min;
1197
1198 //Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone.
1199 //To get better precision, we use the duration as frame_rate_base
1200
1201 st->codec.frame_rate_base=duration;
1202 st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count;
1203
1204 #ifdef DEBUG
1205 printf("FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->total_streams]->time_scale);
1206 #endif
1207 }
1208 else
1209 {
1210 st->codec.frame_rate_base = 1;
1211 st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1212 }
1213 #undef MAX
1214 #undef MIN
1215 return 0;
1216 }
1217
1218 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1219 {
1220 AVStream *st;
1221 MOVStreamContext *sc;
1222
1223 print_atom("trak", atom);
1224
1225 st = av_new_stream(c->fc, c->fc->nb_streams);
1226 if (!st) return -2;
1227 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1228 if (!sc) {
1229 av_free(st);
1230 return -1;
1231 }
1232
1233 sc->sample_to_chunk_index = -1;
1234 st->priv_data = sc;
1235 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1236 st->start_time = 0; /* XXX: check */
1237 st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1238 c->streams[c->fc->nb_streams-1] = sc;
1239
1240 return mov_read_default(c, pb, atom);
1241 }
1242
1243 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1244 {
1245 AVStream *st;
1246
1247 print_atom("tkhd", atom);
1248
1249 st = c->fc->streams[c->fc->nb_streams-1];
1250
1251 get_byte(pb); /* version */
1252
1253 get_byte(pb); get_byte(pb);
1254 get_byte(pb); /* flags */
1255 /*
1256 MOV_TRACK_ENABLED 0x0001
1257 MOV_TRACK_IN_MOVIE 0x0002
1258 MOV_TRACK_IN_PREVIEW 0x0004
1259 MOV_TRACK_IN_POSTER 0x0008
1260 */
1261
1262 get_be32(pb); /* creation time */
1263 get_be32(pb); /* modification time */
1264 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1265 get_be32(pb); /* reserved */
1266 st->start_time = 0; /* check */
1267 st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1268 get_be32(pb); /* reserved */
1269 get_be32(pb); /* reserved */
1270
1271 get_be16(pb); /* layer */
1272 get_be16(pb); /* alternate group */
1273 get_be16(pb); /* volume */
1274 get_be16(pb); /* reserved */
1275
1276 url_fskip(pb, 36); /* display matrix */
1277
1278 /* those are fixed-point */
1279 st->codec.width = get_be32(pb) >> 16; /* track width */
1280 st->codec.height = get_be32(pb) >> 16; /* track height */
1281
1282 return 0;
1283 }
1284
1285 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1286 /* like the files created with Adobe Premiere 5.0, for samples see */
1287 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1288 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1289 {
1290 int err;
1291
1292 #ifdef DEBUG
1293 print_atom("wide", atom);
1294 debug_indent++;
1295 #endif
1296 if (atom.size < 8)
1297 return 0; /* continue */
1298 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1299 url_fskip(pb, atom.size - 4);
1300 return 0;
1301 }
1302 atom.type = get_le32(pb);
1303 atom.offset += 8;
1304 atom.size -= 8;
1305 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1306 url_fskip(pb, atom.size);
1307 return 0;
1308 }
1309 err = mov_read_mdat(c, pb, atom);
1310 #ifdef DEBUG
1311 debug_indent--;
1312 #endif
1313 return err;
1314 }
1315
1316
1317 #ifdef CONFIG_ZLIB
1318 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1319 {
1320 return -1;
1321 }
1322
1323 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1324 {
1325 ByteIOContext ctx;
1326 uint8_t *cmov_data;
1327 uint8_t *moov_data; /* uncompressed data */
1328 long cmov_len, moov_len;
1329 int ret;
1330
1331 print_atom("cmov", atom);
1332
1333 get_be32(pb); /* dcom atom */
1334 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1335 return -1;
1336 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1337 dprintf("unknown compression for cmov atom !");
1338 return -1;
1339 }
1340 get_be32(pb); /* cmvd atom */
1341 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1342 return -1;
1343 moov_len = get_be32(pb); /* uncompressed size */
1344 cmov_len = atom.size - 6 * 4;
1345
1346 cmov_data = (uint8_t *) av_malloc(cmov_len);
1347 if (!cmov_data)
1348 return -1;
1349 moov_data = (uint8_t *) av_malloc(moov_len);
1350 if (!moov_data) {
1351 av_free(cmov_data);
1352 return -1;
1353 }
1354 get_buffer(pb, cmov_data, cmov_len);
1355 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1356 return -1;
1357 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1358 return -1;
1359 ctx.buf_end = ctx.buffer + moov_len;
1360 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1361 atom.offset = 0;
1362 atom.size = moov_len;
1363 #ifdef DEBUG
1364 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1365 #endif
1366 ret = mov_read_default(c, &ctx, atom);
1367 av_free(moov_data);
1368 av_free(cmov_data);
1369
1370 return ret;
1371 }
1372 #endif
1373
1374 static const MOVParseTableEntry mov_default_parse_table[] = {
1375 /* mp4 atoms */
1376 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1377 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1378 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1379 { MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1380 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1381 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1382 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1383 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1384 { MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1385 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1386 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1387 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1388 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1389 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1390 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1391 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1392 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1393 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1394 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1395 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1396 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1397 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1398 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1399 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1400 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1401 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1402 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1403 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1404 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1405 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1406 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1407 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1408 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1409 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1410 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1411 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1412 { MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* sync sample */
1413 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1414 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1415 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1416 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1417 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1418 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1419 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1420 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1421 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1422 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1423 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1424 /* extra mp4 */
1425 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1426 /* QT atoms */
1427 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1428 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1429 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1430 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1431 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1432 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1433 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1434 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1435 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1436 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1437 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1438 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1439 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1440 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1441 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1442 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1443 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1444 #ifdef CONFIG_ZLIB
1445 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1446 #else
1447 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1448 #endif
1449 { 0L, mov_read_leaf }
1450 };
1451
1452 static void mov_free_stream_context(MOVStreamContext *sc)
1453 {
1454 if(sc) {
1455 av_free(sc->chunk_offsets);
1456 av_free(sc->sample_to_chunk);
1457 av_free(sc->sample_sizes);
1458 av_free(sc->header_data);
1459 av_free(sc);
1460 }
1461 }
1462
1463 static inline uint32_t mov_to_tag(uint8_t *buf)
1464 {
1465 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1466 }
1467
1468 static inline uint32_t to_be32(uint8_t *buf)
1469 {
1470 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1471 }
1472
1473 /* XXX: is it sufficient ? */
1474 static int mov_probe(AVProbeData *p)
1475 {
1476 unsigned int offset;
1477 uint32_t tag;
1478
1479 /* check file header */
1480 if (p->buf_size <= 12)
1481 return 0;
1482 offset = 0;
1483 for(;;) {
1484 /* ignore invalid offset */
1485 if ((offset + 8) > (unsigned int)p->buf_size)
1486 return 0;
1487 tag = mov_to_tag(p->buf + offset + 4);
1488 switch(tag) {
1489 case MKTAG( 'm', 'o', 'o', 'v' ):
1490 case MKTAG( 'w', 'i', 'd', 'e' ):
1491 case MKTAG( 'f', 'r', 'e', 'e' ):
1492 case MKTAG( 'm', 'd', 'a', 't' ):
1493 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1494 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1495 return AVPROBE_SCORE_MAX;
1496 case MKTAG( 'f', 't', 'y', 'p' ):
1497 case MKTAG( 's', 'k', 'i', 'p' ):
1498 offset = to_be32(p->buf+offset) + offset;
1499 break;
1500 default:
1501 /* unrecognized tag */
1502 return 0;
1503 }
1504 }
1505 return 0;
1506 }
1507
1508 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1509 {
1510 MOVContext *mov = (MOVContext *) s->priv_data;
1511 ByteIOContext *pb = &s->pb;
1512 int i, j, nb, err;
1513 MOV_atom_t atom = { 0, 0, 0 };
1514
1515 mov->fc = s;
1516 mov->parse_table = mov_default_parse_table;
1517 #if 0
1518 /* XXX: I think we should auto detect */
1519 if(s->iformat->name[1] == 'p')
1520 mov->mp4 = 1;
1521 #endif
1522 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1523 atom.size = url_filesize(url_fileno(pb));
1524 else
1525 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1526
1527 #ifdef DEBUG
1528 printf("filesz=%Ld\n", atom.size);
1529 #endif
1530
1531 /* check MOV header */
1532 err = mov_read_default(mov, pb, atom);
1533 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1534 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1535 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1536 return -1;
1537 }
1538 #ifdef DEBUG
1539 printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1540 #endif
1541 /* some cleanup : make sure we are on the mdat atom */
1542 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1543 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1544
1545 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1546
1547 #ifdef DEBUG
1548 printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1549 #endif
1550
1551 #ifdef DEBUG
1552 printf("streams= %d\n", s->nb_streams);
1553 #endif
1554 mov->total_streams = nb = s->nb_streams;
1555
1556 #if 1
1557 for(i=0; i<s->nb_streams;) {
1558 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1559 av_free(s->streams[i]);
1560 for(j=i+1; j<s->nb_streams; j++)
1561 s->streams[j-1] = s->streams[j];
1562 s->nb_streams--;
1563 } else
1564 i++;
1565 }
1566 for(i=0; i<s->nb_streams;i++) {
1567 MOVStreamContext *sc;
1568 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1569 sc->ffindex = i;
1570 sc->is_ff_stream = 1;
1571 }
1572 #endif
1573 #ifdef DEBUG
1574 printf("real streams= %d\n", s->nb_streams);
1575 #endif
1576 return 0;
1577 }
1578
1579 /* Yes, this is ugly... I didn't write the specs of QT :p */
1580 /* XXX:remove useless commented code sometime */
1581 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1582 {
1583 MOVContext *mov = (MOVContext *) s->priv_data;
1584 MOVStreamContext *sc;
1585 int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1586 int i;
1587 int size;
1588 size = 0x0FFFFFFF;
1589
1590 #ifdef MOV_SPLIT_CHUNKS
1591 if (mov->partial) {
1592
1593 int idx;
1594
1595 sc = mov->partial;
1596 idx = sc->sample_to_chunk_index;
1597
1598 if (idx < 0) return 0;
1599 size = sc->sample_sizes[sc->current_sample];
1600
1601 sc->current_sample++;
1602 sc->left_in_chunk--;
1603
1604 if (sc->left_in_chunk <= 0)
1605 mov->partial = 0;
1606 offset = mov->next_chunk_offset;
1607 /* extract the sample */
1608
1609 goto readchunk;
1610 }
1611 #endif
1612
1613 again:
1614 sc = 0;
1615 for(i=0; i<mov->total_streams; i++) {
1616 MOVStreamContext *msc = mov->streams[i];
1617 //printf("MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1618 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1619 && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1620 sc = msc;
1621 offset = msc->chunk_offsets[msc->next_chunk];
1622 //printf("SELETED %Ld i:%d\n", offset, i);
1623 }
1624 }
1625 if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1626 return -1;
1627
1628 sc->next_chunk++;
1629
1630 if(mov->next_chunk_offset < offset) { /* some meta data */
1631 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1632 mov->next_chunk_offset = offset;
1633 }
1634
1635 //printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1636 if(!sc->is_ff_stream) {
1637 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1638 mov->next_chunk_offset = offset;
1639 offset = 0x0FFFFFFFFFFFFFFFLL;
1640 goto again;
1641 }
1642
1643 /* now get the chunk size... */
1644
1645 for(i=0; i<mov->total_streams; i++) {
1646 MOVStreamContext *msc = mov->streams[i];
1647 if ((msc->next_chunk < msc->chunk_count)
1648 && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1649 size = msc->chunk_offsets[msc->next_chunk] - offset;
1650 }
1651
1652 #ifdef MOV_MINOLTA_FIX
1653 //Make sure that size is according to sample_size (Needed by .mov files
1654 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1655 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1656 //but I have no such movies
1657 if (sc->sample_size > 0) {
1658 int foundsize=0;
1659 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1660 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1661 {
1662 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1663 }
1664 #ifdef DEBUG
1665 /*printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
1666 #endif
1667 }
1668 if( (foundsize>0) && (foundsize<size) )
1669 {
1670 #ifdef DEBUG
1671 /*printf("this size should actually be %d\n",foundsize);*/
1672 #endif
1673 size=foundsize;
1674 }
1675 }
1676 #endif //MOV_MINOLTA_FIX
1677
1678 #ifdef MOV_SPLIT_CHUNKS
1679 /* split chunks into samples */
1680 if (sc->sample_size == 0) {
1681 int idx = sc->sample_to_chunk_index;
1682 if ((idx + 1 < sc->sample_to_chunk_sz)
1683 && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1684 idx++;
1685 sc->sample_to_chunk_index = idx;
1686 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1687 mov->partial = sc;
1688 /* we'll have to get those samples before next chunk */
1689 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1690 size = sc->sample_sizes[sc->current_sample];
1691 }
1692
1693 sc->current_sample++;
1694 }
1695 #endif
1696
1697 readchunk:
1698 //printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1699 if(size == 0x0FFFFFFF)
1700 size = mov->mdat_size + mov->mdat_offset - offset;
1701 if(size < 0)
1702 return -1;
1703 if(size == 0)
1704 return -1;
1705 url_fseek(&s->pb, offset, SEEK_SET);
1706
1707 //printf("READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1708 if (sc->header_len > 0) {
1709 av_new_packet(pkt, size + sc->header_len);
1710 memcpy(pkt->data, sc->header_data, sc->header_len);
1711 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1712 /* free header */
1713 av_freep(&sc->header_data);
1714 sc->header_len = 0;
1715 } else {
1716 av_new_packet(pkt, size);
1717 get_buffer(&s->pb, pkt->data, pkt->size);
1718 }
1719 pkt->stream_index = sc->ffindex;
1720
1721 #ifdef DEBUG
1722 /*
1723 printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1724 for(i=0; i<8; i++)
1725 printf("%02x ", pkt->data[i]);
1726 for(i=0; i<8; i++)
1727 printf("%c ", (pkt->data[i]) & 0x7F);
1728 puts("");
1729 */
1730 #endif
1731
1732 mov->next_chunk_offset = offset + size;
1733
1734 return 0;
1735 }
1736
1737 static int mov_read_close(AVFormatContext *s)
1738 {
1739 int i;
1740 MOVContext *mov = (MOVContext *) s->priv_data;
1741 for(i=0; i<mov->total_streams; i++)
1742 mov_free_stream_context(mov->streams[i]);
1743 /* free color tabs */
1744 for(i=0; i<mov->ctab_size; i++)
1745 av_freep(&mov->ctab[i]);
1746 av_freep(&mov->ctab);
1747 return 0;
1748 }
1749
1750 static AVInputFormat mov_iformat = {
1751 "mov,mp4,m4a,3gp",
1752 "QuickTime/MPEG4 format",
1753 sizeof(MOVContext),
1754 mov_probe,
1755 mov_read_header,
1756 mov_read_packet,
1757 mov_read_close,
1758 };
1759
1760 int mov_init(void)
1761 {
1762 av_register_input_format(&mov_iformat);
1763 return 0;
1764 }