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