970d10142741a3b3d396d216cbf8e944ae6f77d1
[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_NONE, 0 },
102 };
103
104 static const CodecTag mov_audio_tags[] = {
105 /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
106 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
107 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
108 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
109 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
110 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
111 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
112 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
113 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
114 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
115
116 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
117 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
118 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
119 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
120 /* MP4 tags */
121 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG 4 AAC or audio ? */
122 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
123 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
124 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
125 { CODEC_ID_NONE, 0 },
126 };
127
128 /* the QuickTime file format is quite convoluted...
129 * it has lots of index tables, each indexing something in another one...
130 * Here we just use what is needed to read the chunks
131 */
132
133 typedef struct MOV_sample_to_chunk_tbl {
134 long first;
135 long count;
136 long id;
137 } MOV_sample_to_chunk_tbl;
138
139 typedef struct {
140 uint32_t type;
141 int64_t offset;
142 int64_t size; /* total size (excluding the size and type fields) */
143 } MOV_atom_t;
144
145 typedef struct {
146 int seed;
147 int flags;
148 int size;
149 void* clrs;
150 } MOV_ctab_t;
151
152 typedef struct {
153 uint8_t version;
154 uint32_t flags; // 24bit
155
156 /* 0x03 ESDescrTag */
157 uint16_t es_id;
158 #define MP4ODescrTag 0x01
159 #define MP4IODescrTag 0x02
160 #define MP4ESDescrTag 0x03
161 #define MP4DecConfigDescrTag 0x04
162 #define MP4DecSpecificDescrTag 0x05
163 #define MP4SLConfigDescrTag 0x06
164 #define MP4ContentIdDescrTag 0x07
165 #define MP4SupplContentIdDescrTag 0x08
166 #define MP4IPIPtrDescrTag 0x09
167 #define MP4IPMPPtrDescrTag 0x0A
168 #define MP4IPMPDescrTag 0x0B
169 #define MP4RegistrationDescrTag 0x0D
170 #define MP4ESIDIncDescrTag 0x0E
171 #define MP4ESIDRefDescrTag 0x0F
172 #define MP4FileIODescrTag 0x10
173 #define MP4FileODescrTag 0x11
174 #define MP4ExtProfileLevelDescrTag 0x13
175 #define MP4ExtDescrTagsStart 0x80
176 #define MP4ExtDescrTagsEnd 0xFE
177 uint8_t stream_priority;
178
179 /* 0x04 DecConfigDescrTag */
180 uint8_t object_type_id;
181 uint8_t stream_type;
182 /* XXX: really streamType is
183 * only 6bit, followed by:
184 * 1bit upStream
185 * 1bit reserved
186 */
187 uint32_t buffer_size_db; // 24
188 uint32_t max_bitrate;
189 uint32_t avg_bitrate;
190
191 /* 0x05 DecSpecificDescrTag */
192 uint8_t decoder_cfg_len;
193 uint8_t *decoder_cfg;
194
195 /* 0x06 SLConfigDescrTag */
196 uint8_t sl_config_len;
197 uint8_t *sl_config;
198 } MOV_esds_t;
199
200 struct MOVParseTableEntry;
201
202 typedef struct MOVStreamContext {
203 int ffindex; /* the ffmpeg stream id */
204 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
205 long next_chunk;
206 long chunk_count;
207 int64_t *chunk_offsets;
208 long sample_to_chunk_sz;
209 MOV_sample_to_chunk_tbl *sample_to_chunk;
210 long sample_to_chunk_index;
211 long sample_size;
212 long sample_count;
213 long *sample_sizes;
214 int time_scale;
215 long current_sample;
216 long left_in_chunk; /* how many samples before next chunk */
217 /* specific MPEG4 header which is added at the beginning of the stream */
218 int header_len;
219 uint8_t *header_data;
220 MOV_esds_t esds;
221 } MOVStreamContext;
222
223 typedef struct MOVContext {
224 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) */
225 AVFormatContext *fc;
226 int time_scale;
227 int duration; /* duration of the longest track */
228 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
229 int found_mdat; /* we suppose we have enough data to read the file */
230 int64_t mdat_size;
231 int64_t mdat_offset;
232 int total_streams;
233 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
234 * but we need the info to be able to skip data from those streams in the 'mdat' section
235 */
236 MOVStreamContext *streams[MAX_STREAMS];
237
238 int64_t next_chunk_offset;
239 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
240 int ctab_size;
241 MOV_ctab_t **ctab; /* color tables */
242 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
243 /* NOTE: for recursion save to/ restore from local variable! */
244 } MOVContext;
245
246
247 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
248
249 /* those functions parse an atom */
250 /* return code:
251 1: found what I wanted, exit
252 0: continue to parse next atom
253 -1: error occured, exit
254 */
255 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
256
257 /* links atom IDs to parse functions */
258 typedef struct MOVParseTableEntry {
259 uint32_t type;
260 mov_parse_function func;
261 } MOVParseTableEntry;
262
263 #ifdef DEBUG
264 /*
265 * XXX: static sux, even more in a multithreaded environment...
266 * Avoid them. This is here just to help debugging.
267 */
268 static int debug_indent = 0;
269 void print_atom(const char *str, MOV_atom_t atom)
270 {
271 unsigned int tag, i;
272 tag = (unsigned int) atom.type;
273 i=debug_indent;
274 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
275 while(i--)
276 printf("|");
277 printf("parse:");
278 printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
279 str, tag & 0xff,
280 (tag >> 8) & 0xff,
281 (tag >> 16) & 0xff,
282 (tag >> 24) & 0xff,
283 (unsigned int)atom.offset,
284 (unsigned int)atom.size);
285 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
286 }
287 #else
288 #define print_atom(a,b)
289 #endif
290
291
292 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
293 {
294 print_atom("leaf", atom);
295
296 if (atom.size>1)
297 url_fskip(pb, atom.size);
298 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
299 return 0;
300 }
301
302 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
303 {
304 int64_t total_size = 0;
305 MOV_atom_t a;
306 int i;
307 int err = 0;
308
309 #ifdef DEBUG
310 print_atom("default", atom);
311 debug_indent++;
312 #endif
313
314 a.offset = atom.offset;
315
316 if (atom.size < 0)
317 atom.size = 0x7fffffffffffffffLL;
318 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
319 a.size = atom.size;
320 a.type=0L;
321 if(atom.size >= 8) {
322 a.size = get_be32(pb);
323 a.type = get_le32(pb);
324 }
325 total_size += 8;
326 a.offset += 8;
327 //printf("type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
328 if (a.size == 1) { /* 64 bit extended size */
329 a.size = get_be64(pb) - 8;
330 a.offset += 8;
331 total_size += 8;
332 }
333 if (a.size == 0) {
334 a.size = atom.size - total_size;
335 if (a.size <= 8)
336 break;
337 }
338 for (i = 0; c->parse_table[i].type != 0L
339 && c->parse_table[i].type != a.type; i++)
340 /* empty */;
341
342 a.size -= 8;
343 // printf(" i=%ld\n", i);
344 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
345 // url_seek(pb, atom.offset+atom.size, SEEK_SET);
346 #ifdef DEBUG
347 print_atom("unknown", a);
348 #endif
349 url_fskip(pb, a.size);
350 } else {
351 #ifdef DEBUG
352 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
353 //print_atom(b, type, offset, size);
354 #endif
355 err = (c->parse_table[i].func)(c, pb, a);
356 }
357
358 a.offset += a.size;
359 total_size += a.size;
360 }
361
362 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
363 //printf("RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
364 url_fskip(pb, atom.size - total_size);
365 }
366
367 #ifdef DEBUG
368 debug_indent--;
369 #endif
370 return err;
371 }
372
373 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
374 {
375 unsigned int len;
376 MOV_ctab_t *t;
377 //url_fskip(pb, atom.size); // for now
378 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
379 t = c->ctab[c->ctab_size];
380 t->seed = get_be32(pb);
381 t->flags = get_be16(pb);
382 t->size = get_be16(pb) + 1;
383 len = 2 * t->size * 4;
384 if (len > 0) {
385 t->clrs = av_malloc(len); // 16bit A R G B
386 if (t->clrs)
387 get_buffer(pb, t->clrs, len);
388 }
389
390 return 0;
391 }
392
393 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
394 {
395 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
396 int len = 0;
397 uint32_t type;
398 uint32_t ctype;
399
400 print_atom("hdlr", atom);
401
402 get_byte(pb); /* version */
403 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
404
405 /* component type */
406 ctype = get_le32(pb);
407 type = get_le32(pb); /* component subtype */
408
409 #ifdef DEBUG
410 printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
411 printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
412 #endif
413 #ifdef DEBUG
414 /* XXX: yeah this is ugly... */
415 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
416 if(type == MKTAG('v', 'i', 'd', 'e'))
417 puts("hdlr: vide");
418 else if(type == MKTAG('s', 'o', 'u', 'n'))
419 puts("hdlr: soun");
420 } else if(ctype == 0) { /* MP4 */
421 if(type == MKTAG('v', 'i', 'd', 'e'))
422 puts("hdlr: vide");
423 else if(type == MKTAG('s', 'o', 'u', 'n'))
424 puts("hdlr: soun");
425 else if(type == MKTAG('o', 'd', 's', 'm'))
426 puts("hdlr: odsm");
427 else if(type == MKTAG('s', 'd', 's', 'm'))
428 puts("hdlr: sdsm");
429 } else puts("hdlr: meta");
430 #endif
431
432 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
433 /* helps parsing the string hereafter... */
434 c->mp4 = 0;
435 if(type == MKTAG('v', 'i', 'd', 'e'))
436 st->codec.codec_type = CODEC_TYPE_VIDEO;
437 else if(type == MKTAG('s', 'o', 'u', 'n'))
438 st->codec.codec_type = CODEC_TYPE_AUDIO;
439 } else if(ctype == 0) { /* MP4 */
440 /* helps parsing the string hereafter... */
441 c->mp4 = 1;
442 if(type == MKTAG('v', 'i', 'd', 'e'))
443 st->codec.codec_type = CODEC_TYPE_VIDEO;
444 else if(type == MKTAG('s', 'o', 'u', 'n'))
445 st->codec.codec_type = CODEC_TYPE_AUDIO;
446 }
447 get_be32(pb); /* component manufacture */
448 get_be32(pb); /* component flags */
449 get_be32(pb); /* component flags mask */
450
451 if(atom.size <= 24)
452 return 0; /* nothing left to read */
453 /* XXX: MP4 uses a C string, not a pascal one */
454 /* component name */
455
456 if(c->mp4) {
457 /* .mp4: C string */
458 while(get_byte(pb) && (++len < (atom.size - 24)));
459 } else {
460 /* .mov: PASCAL string */
461 #ifdef DEBUG
462 char* buf;
463 #endif
464 len = get_byte(pb);
465 #ifdef DEBUG
466 buf = (uint8_t*) av_malloc(len+1);
467 if (buf) {
468 get_buffer(pb, buf, len);
469 buf[len] = '\0';
470 printf("**buf='%s'\n", buf);
471 av_free(buf);
472 } else
473 #endif
474 url_fskip(pb, len);
475 }
476
477 return 0;
478 }
479
480 static int mov_mp4_read_descr_len(ByteIOContext *pb)
481 {
482 int len = 0;
483 int count = 4;
484 while (count--) {
485 int c = get_byte(pb);
486 len = (len << 7) | (c & 0x7f);
487 if (!(c & 0x80))
488 break;
489 }
490 return len;
491 }
492
493 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
494 {
495 int len;
496 *tag = get_byte(pb);
497 len = mov_mp4_read_descr_len(pb);
498 #ifdef DEBUG
499 printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
500 #endif
501 return len;
502 }
503
504 static inline unsigned int get_be24(ByteIOContext *s)
505 {
506 unsigned int val;
507 val = get_byte(s) << 16;
508 val |= get_byte(s) << 8;
509 val |= get_byte(s);
510 return val;
511 }
512
513 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
514 {
515 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
516 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
517 int64_t start_pos = url_ftell(pb);
518 int tag, len;
519
520 print_atom("esds", atom);
521
522 /* Well, broken but suffisant for some MP4 streams */
523 get_be32(pb); /* version + flags */
524 len = mov_mp4_read_descr(pb, &tag);
525 if (tag == MP4ESDescrTag) {
526 get_be16(pb); /* ID */
527 get_byte(pb); /* priority */
528 } else
529 get_be16(pb); /* ID */
530
531 len = mov_mp4_read_descr(pb, &tag);
532 if (tag == MP4DecConfigDescrTag) {
533 sc->esds.object_type_id = get_byte(pb);
534 sc->esds.stream_type = get_byte(pb);
535 sc->esds.buffer_size_db = get_be24(pb);
536 sc->esds.max_bitrate = get_be32(pb);
537 sc->esds.avg_bitrate = get_be32(pb);
538
539 len = mov_mp4_read_descr(pb, &tag);
540 //printf("LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
541 if (tag == MP4DecSpecificDescrTag) {
542 #ifdef DEBUG
543 printf("Specific MPEG4 header len=%d\n", len);
544 #endif
545 st->codec.extradata = (uint8_t*) av_mallocz(len);
546 if (st->codec.extradata) {
547 get_buffer(pb, st->codec.extradata, len);
548 st->codec.extradata_size = len;
549 }
550 }
551 }
552 /* in any case, skip garbage */
553 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
554 return 0;
555 }
556
557 /* this atom contains actual media data */
558 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
559 {
560 print_atom("mdat", atom);
561
562 if(atom.size == 0) /* wrong one (MP4) */
563 return 0;
564 c->found_mdat=1;
565 c->mdat_offset = atom.offset;
566 c->mdat_size = atom.size;
567 if(c->found_moov)
568 return 1; /* found both, just go */
569 url_fskip(pb, atom.size);
570 return 0; /* now go for moov */
571 }
572
573 /* this atom should contain all header atoms */
574 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
575 {
576 int err;
577
578 print_atom("moov", atom);
579
580 err = mov_read_default(c, pb, atom);
581 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
582 /* so we don't parse the whole file if over a network */
583 c->found_moov=1;
584 if(c->found_mdat)
585 return 1; /* found both, just go */
586 return 0; /* now go for mdat */
587 }
588
589
590 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
591 {
592 print_atom("mdhd", atom);
593
594 get_byte(pb); /* version */
595
596 get_byte(pb); get_byte(pb);
597 get_byte(pb); /* flags */
598
599 get_be32(pb); /* creation time */
600 get_be32(pb); /* modification time */
601
602 c->streams[c->total_streams]->time_scale = get_be32(pb);
603
604 #ifdef DEBUG
605 printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
606 #endif
607 get_be32(pb); /* duration */
608
609 get_be16(pb); /* language */
610 get_be16(pb); /* quality */
611
612 return 0;
613 }
614
615 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
616 {
617 print_atom("mvhd", atom);
618
619 get_byte(pb); /* version */
620 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
621
622 get_be32(pb); /* creation time */
623 get_be32(pb); /* modification time */
624 c->time_scale = get_be32(pb); /* time scale */
625 #ifdef DEBUG
626 printf("time scale = %i\n", c->time_scale);
627 #endif
628 c->duration = get_be32(pb); /* duration */
629 get_be32(pb); /* preferred scale */
630
631 get_be16(pb); /* preferred volume */
632
633 url_fskip(pb, 10); /* reserved */
634
635 url_fskip(pb, 36); /* display matrix */
636
637 get_be32(pb); /* preview time */
638 get_be32(pb); /* preview duration */
639 get_be32(pb); /* poster time */
640 get_be32(pb); /* selection time */
641 get_be32(pb); /* selection duration */
642 get_be32(pb); /* current time */
643 get_be32(pb); /* next track ID */
644
645 return 0;
646 }
647
648 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
649 {
650 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
651
652 // currently SVQ3 decoder expect full STSD header - so let's fake it
653 // this should be fixed and just SMI header should be passed
654 av_free(st->codec.extradata);
655 st->codec.extradata_size = 0x5a + atom.size;
656 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
657
658 if (st->codec.extradata) {
659 strcpy(st->codec.extradata, "SVQ3"); // fake
660 get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
661 //printf("Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
662 } else
663 url_fskip(pb, atom.size);
664
665 return 0;
666 }
667
668 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
669 {
670 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
671 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
672 int entries, i;
673
674 print_atom("stco", atom);
675
676 get_byte(pb); /* version */
677 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
678
679 entries = get_be32(pb);
680 sc->chunk_count = entries;
681 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
682 if (!sc->chunk_offsets)
683 return -1;
684 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
685 for(i=0; i<entries; i++) {
686 sc->chunk_offsets[i] = get_be32(pb);
687 }
688 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
689 for(i=0; i<entries; i++) {
690 sc->chunk_offsets[i] = get_be64(pb);
691 }
692 } else
693 return -1;
694 #ifdef DEBUG
695 /*
696 for(i=0; i<entries; i++) {
697 printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
698 }
699 */
700 #endif
701 return 0;
702 }
703
704 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
705 {
706 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
707 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
708 int entries, frames_per_sample;
709 uint32_t format;
710
711 print_atom("stsd", atom);
712
713 get_byte(pb); /* version */
714 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
715
716 entries = get_be32(pb);
717
718 while(entries--) { //Parsing Sample description table
719 enum CodecID id;
720 int size = get_be32(pb); /* size */
721 format = get_le32(pb); /* data format */
722
723 get_be32(pb); /* reserved */
724 get_be16(pb); /* reserved */
725 get_be16(pb); /* index */
726
727 /* for MPEG4: set codec type by looking for it */
728 id = codec_get_id(mov_video_tags, format);
729 if (id >= 0) {
730 AVCodec *codec;
731 codec = avcodec_find_decoder(id);
732 if (codec)
733 st->codec.codec_type = codec->type;
734 }
735 #ifdef DEBUG
736 printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
737 size,
738 (format >> 0) & 0xff,
739 (format >> 8) & 0xff,
740 (format >> 16) & 0xff,
741 (format >> 24) & 0xff,
742 st->codec.codec_type);
743 #endif
744 st->codec.codec_tag = format;
745 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
746 MOV_atom_t a = { 0, 0, 0 };
747 st->codec.codec_id = id;
748 get_be16(pb); /* version */
749 get_be16(pb); /* revision level */
750 get_be32(pb); /* vendor */
751 get_be32(pb); /* temporal quality */
752 get_be32(pb); /* spacial quality */
753 st->codec.width = get_be16(pb); /* width */
754 st->codec.height = get_be16(pb); /* height */
755 #if 1
756 if (st->codec.codec_id == CODEC_ID_MPEG4) {
757 /* in some MPEG4 the width/height are not correct, so
758 we ignore this info */
759 st->codec.width = 0;
760 st->codec.height = 0;
761 }
762 #endif
763 get_be32(pb); /* horiz resolution */
764 get_be32(pb); /* vert resolution */
765 get_be32(pb); /* data size, always 0 */
766 frames_per_sample = get_be16(pb); /* frames per samples */
767 #ifdef DEBUG
768 printf("frames/samples = %d\n", frames_per_sample);
769 #endif
770 get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
771
772 st->codec.bits_per_sample = get_be16(pb); /* depth */
773 st->codec.color_table_id = get_be16(pb); /* colortable id */
774
775 /* These are set in mov_read_stts and might already be set!
776 st->codec.frame_rate = 25;
777 st->codec.frame_rate_base = 1;
778 */
779 size -= (16+8*4+2+32+2*2);
780 #if 0
781 while (size >= 8) {
782 MOV_atom_t a;
783 int64_t start_pos;
784
785 a.size = get_be32(pb);
786 a.type = get_le32(pb);
787 size -= 8;
788 #ifdef DEBUG
789 printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
790 (a.type >> 0) & 0xff,
791 (a.type >> 8) & 0xff,
792 (a.type >> 16) & 0xff,
793 (a.type >> 24) & 0xff,
794 a.size, size);
795 #endif
796 start_pos = url_ftell(pb);
797
798 switch(a.type) {
799 case MKTAG('e', 's', 'd', 's'):
800 {
801 int tag, len;
802 /* Well, broken but suffisant for some MP4 streams */
803 get_be32(pb); /* version + flags */
804 len = mov_mp4_read_descr(pb, &tag);
805 if (tag == 0x03) {
806 /* MP4ESDescrTag */
807 get_be16(pb); /* ID */
808 get_byte(pb); /* priority */
809 len = mov_mp4_read_descr(pb, &tag);
810 if (tag != 0x04)
811 goto fail;
812 /* MP4DecConfigDescrTag */
813 get_byte(pb); /* objectTypeId */
814 get_be32(pb); /* streamType + buffer size */
815 get_be32(pb); /* max bit rate */
816 get_be32(pb); /* avg bit rate */
817 len = mov_mp4_read_descr(pb, &tag);
818 if (tag != 0x05)
819 goto fail;
820 /* MP4DecSpecificDescrTag */
821 #ifdef DEBUG
822 printf("Specific MPEG4 header len=%d\n", len);
823 #endif
824 sc->header_data = av_mallocz(len);
825 if (sc->header_data) {
826 get_buffer(pb, sc->header_data, len);
827 sc->header_len = len;
828 }
829 }
830 /* in any case, skip garbage */
831 }
832 break;
833 default:
834 break;
835 }
836 fail:
837 printf("ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
838 if (atom.size > 8) {
839 url_fskip(pb, (atom.size - 8) -
840 ((url_ftell(pb) - start_pos)));
841 size -= atom.size - 8;
842 }
843 }
844 if (size > 0) {
845 /* unknown extension */
846 url_fskip(pb, size);
847 }
848 #else
849 a.size = size;
850 mov_read_default(c, pb, a);
851 #endif
852 } else {
853 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
854 if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
855 {
856 #ifdef DEBUG
857 printf("AMR-NB or AMR-WB audio identified!!\n");
858 #endif
859 get_be32(pb);get_be32(pb); //Reserved_8
860 get_be16(pb);//Reserved_2
861 get_be16(pb);//Reserved_2
862 get_be32(pb);//Reserved_4
863 get_be16(pb);//TimeScale
864 get_be16(pb);//Reserved_2
865
866 //AMRSpecificBox.(10 bytes)
867
868 get_be32(pb); //size
869 get_be32(pb); //type=='damr'
870 get_be32(pb); //vendor
871 get_byte(pb); //decoder version
872 get_be16(pb); //mode_set
873 get_byte(pb); //mode_change_period
874 get_byte(pb); //frames_per_sample
875
876 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
877 if(st->codec.codec_id==CODEC_ID_AMR_NB)
878 {
879 st->codec.sample_rate=8000;
880 st->codec.channels=1;
881 }
882 else //AMR-WB
883 {
884 st->codec.sample_rate=16000;
885 st->codec.channels=1;
886 }
887 st->codec.bits_per_sample=16;
888 st->codec.bit_rate=0; /*It is not possible to tell this before we have
889 an audio frame and even then every frame can be different*/
890 }
891 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
892 {
893 //This is some stuff for the hint track, lets ignore it!
894 //Do some mp4 auto detect.
895 c->mp4=1;
896 size-=(16);
897 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
898 }
899 else if(size>=(16+20))
900 {//16 bytes read, reading atleast 20 more
901 #ifdef DEBUG
902 printf("audio size=0x%X\n",size);
903 #endif
904 uint16_t version = get_be16(pb); /* version */
905 get_be16(pb); /* revision level */
906 get_be32(pb); /* vendor */
907
908 st->codec.channels = get_be16(pb); /* channel count */
909 st->codec.bits_per_sample = get_be16(pb); /* sample size */
910
911 /* handle specific s8 codec */
912 get_be16(pb); /* compression id = 0*/
913 get_be16(pb); /* packet size = 0 */
914
915 st->codec.sample_rate = ((get_be32(pb) >> 16));
916 //printf("CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
917
918 switch (st->codec.codec_id) {
919 case CODEC_ID_PCM_S16BE:
920 if (st->codec.bits_per_sample == 8)
921 st->codec.codec_id = CODEC_ID_PCM_S8;
922 /* fall */
923 case CODEC_ID_PCM_U8:
924 st->codec.bit_rate = st->codec.sample_rate * 8;
925 break;
926 default:
927 ;
928 }
929
930 //Read QT version 1 fields. In version 0 theese dont exist
931 #ifdef DEBUG
932 printf("version =%d mp4=%d\n",version,c->mp4);
933 printf("size-(16+20+16)=%d\n",size-(16+20+16));
934 #endif
935 if((version==1) && size>=(16+20+16))
936 {
937 get_be32(pb); /* samples per packet */
938 get_be32(pb); /* bytes per packet */
939 get_be32(pb); /* bytes per frame */
940 get_be32(pb); /* bytes per sample */
941 if(size>(16+20+16))
942 {
943 //Optional, additional atom-based fields
944 #ifdef DEBUG
945 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 ),
946 (format >> 0) & 0xff,
947 (format >> 8) & 0xff,
948 (format >> 16) & 0xff,
949 (format >> 24) & 0xff);
950 #endif
951 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
952 mov_read_default(c, pb, a);
953 }
954 }
955 else
956 {
957 //We should be down to 0 bytes here, but lets make sure.
958 size-=(16+20);
959 #ifdef DEBUG
960 if(size>0)
961 printf("skipping 0x%X bytes\n",size-(16+20));
962 #endif
963 url_fskip(pb, size);
964 }
965 }
966 else
967 {
968 size-=16;
969 //Unknown size, but lets do our best and skip the rest.
970 #ifdef DEBUG
971 printf("Strange size, skipping 0x%X bytes\n",size);
972 #endif
973 url_fskip(pb, size);
974 }
975 }
976 }
977
978 return 0;
979 }
980
981 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
982 {
983 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
984 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
985 int entries, i;
986
987 print_atom("stsc", atom);
988
989 get_byte(pb); /* version */
990 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
991
992 entries = get_be32(pb);
993 #ifdef DEBUG
994 printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
995 #endif
996 sc->sample_to_chunk_sz = entries;
997 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
998 if (!sc->sample_to_chunk)
999 return -1;
1000 for(i=0; i<entries; i++) {
1001 sc->sample_to_chunk[i].first = get_be32(pb);
1002 sc->sample_to_chunk[i].count = get_be32(pb);
1003 sc->sample_to_chunk[i].id = get_be32(pb);
1004 #ifdef DEBUG
1005 /* 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); */
1006 #endif
1007 }
1008 return 0;
1009 }
1010
1011 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1012 {
1013 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1014 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1015 int entries, i;
1016
1017 print_atom("stsz", atom);
1018
1019 get_byte(pb); /* version */
1020 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1021
1022 sc->sample_size = get_be32(pb);
1023 entries = get_be32(pb);
1024 sc->sample_count = entries;
1025 #ifdef DEBUG
1026 printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1027 #endif
1028 if(sc->sample_size)
1029 return 0; /* there isn't any table following */
1030 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1031 if (!sc->sample_sizes)
1032 return -1;
1033 for(i=0; i<entries; i++) {
1034 sc->sample_sizes[i] = get_be32(pb);
1035 #ifdef DEBUG
1036 /* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1037 #endif
1038 }
1039 return 0;
1040 }
1041
1042 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1043 {
1044 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1045 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1046 int entries, i;
1047 int duration=0;
1048 int total_sample_count=0;
1049
1050 print_atom("stts", atom);
1051
1052 get_byte(pb); /* version */
1053 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1054 entries = get_be32(pb);
1055
1056
1057 #ifdef DEBUG
1058 printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1059 #endif
1060 for(i=0; i<entries; i++) {
1061 int sample_duration;
1062 int sample_count;
1063
1064 sample_count=get_be32(pb);
1065 sample_duration = get_be32(pb);
1066 #ifdef DEBUG
1067 printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1068 #endif
1069 duration+=sample_duration*sample_count;
1070 total_sample_count+=sample_count;
1071
1072 #if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1073
1074 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1075 st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1076 st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1077 #ifdef DEBUG
1078 printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1079 #endif
1080 }
1081 #endif
1082 }
1083
1084 #define MAX(a,b) a>b?a:b
1085 #define MIN(a,b) a>b?b:a
1086 /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1087 if(duration>0)
1088 {
1089 //Find greatest common divisor to avoid overflow using the Euclidean Algorithm...
1090 uint32_t max=MAX(duration,total_sample_count);
1091 uint32_t min=MIN(duration,total_sample_count);
1092 uint32_t spare=max%min;
1093
1094 while(spare!=0)
1095 {
1096 max=min;
1097 min=spare;
1098 spare=max%min;
1099 }
1100
1101 duration/=min;
1102 total_sample_count/=min;
1103
1104 //Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone.
1105 //To get better precision, we use the duration as frame_rate_base
1106
1107 st->codec.frame_rate_base=duration;
1108 st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count;
1109
1110 #ifdef DEBUG
1111 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);
1112 #endif
1113 }
1114 else
1115 {
1116 st->codec.frame_rate_base = 1;
1117 st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1118 }
1119 #undef MAX
1120 #undef MIN
1121 return 0;
1122 }
1123
1124 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1125 {
1126 AVStream *st;
1127 MOVStreamContext *sc;
1128
1129 print_atom("trak", atom);
1130
1131 st = av_new_stream(c->fc, c->fc->nb_streams);
1132 if (!st) return -2;
1133 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1134 if (!sc) {
1135 av_free(st);
1136 return -1;
1137 }
1138
1139 sc->sample_to_chunk_index = -1;
1140 st->priv_data = sc;
1141 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1142 st->start_time = 0; /* XXX: check */
1143 st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1144 c->streams[c->fc->nb_streams-1] = sc;
1145
1146 return mov_read_default(c, pb, atom);
1147 }
1148
1149 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1150 {
1151 AVStream *st;
1152
1153 print_atom("tkhd", atom);
1154
1155 st = c->fc->streams[c->fc->nb_streams-1];
1156
1157 get_byte(pb); /* version */
1158
1159 get_byte(pb); get_byte(pb);
1160 get_byte(pb); /* flags */
1161 /*
1162 MOV_TRACK_ENABLED 0x0001
1163 MOV_TRACK_IN_MOVIE 0x0002
1164 MOV_TRACK_IN_PREVIEW 0x0004
1165 MOV_TRACK_IN_POSTER 0x0008
1166 */
1167
1168 get_be32(pb); /* creation time */
1169 get_be32(pb); /* modification time */
1170 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1171 get_be32(pb); /* reserved */
1172 st->start_time = 0; /* check */
1173 st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1174 get_be32(pb); /* reserved */
1175 get_be32(pb); /* reserved */
1176
1177 get_be16(pb); /* layer */
1178 get_be16(pb); /* alternate group */
1179 get_be16(pb); /* volume */
1180 get_be16(pb); /* reserved */
1181
1182 url_fskip(pb, 36); /* display matrix */
1183
1184 /* those are fixed-point */
1185 st->codec.width = get_be32(pb) >> 16; /* track width */
1186 st->codec.height = get_be32(pb) >> 16; /* track height */
1187
1188 return 0;
1189 }
1190
1191 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1192 /* like the files created with Adobe Premiere 5.0, for samples see */
1193 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1194 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1195 {
1196 int err;
1197
1198 #ifdef DEBUG
1199 print_atom("wide", atom);
1200 debug_indent++;
1201 #endif
1202 if (atom.size < 8)
1203 return 0; /* continue */
1204 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1205 url_fskip(pb, atom.size - 4);
1206 return 0;
1207 }
1208 atom.type = get_le32(pb);
1209 atom.offset += 8;
1210 atom.size -= 8;
1211 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1212 url_fskip(pb, atom.size);
1213 return 0;
1214 }
1215 err = mov_read_mdat(c, pb, atom);
1216 #ifdef DEBUG
1217 debug_indent--;
1218 #endif
1219 return err;
1220 }
1221
1222
1223 #ifdef CONFIG_ZLIB
1224 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1225 {
1226 return -1;
1227 }
1228
1229 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1230 {
1231 ByteIOContext ctx;
1232 uint8_t *cmov_data;
1233 uint8_t *moov_data; /* uncompressed data */
1234 long cmov_len, moov_len;
1235 int ret;
1236
1237 print_atom("cmov", atom);
1238
1239 get_be32(pb); /* dcom atom */
1240 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1241 return -1;
1242 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1243 dprintf("unknown compression for cmov atom !");
1244 return -1;
1245 }
1246 get_be32(pb); /* cmvd atom */
1247 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1248 return -1;
1249 moov_len = get_be32(pb); /* uncompressed size */
1250 cmov_len = atom.size - 6 * 4;
1251
1252 cmov_data = (uint8_t *) av_malloc(cmov_len);
1253 if (!cmov_data)
1254 return -1;
1255 moov_data = (uint8_t *) av_malloc(moov_len);
1256 if (!moov_data) {
1257 av_free(cmov_data);
1258 return -1;
1259 }
1260 get_buffer(pb, cmov_data, cmov_len);
1261 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1262 return -1;
1263 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1264 return -1;
1265 ctx.buf_end = ctx.buffer + moov_len;
1266 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1267 atom.offset = 0;
1268 atom.size = moov_len;
1269 #ifdef DEBUG
1270 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1271 #endif
1272 ret = mov_read_default(c, &ctx, atom);
1273 av_free(moov_data);
1274 av_free(cmov_data);
1275
1276 return ret;
1277 }
1278 #endif
1279
1280 static const MOVParseTableEntry mov_default_parse_table[] = {
1281 /* mp4 atoms */
1282 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1283 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1284 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1285 { MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1286 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1287 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1288 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1289 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1290 { MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1291 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1292 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1293 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1294 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1295 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1296 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1297 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1298 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1299 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1300 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1301 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1302 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1303 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1304 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1305 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1306 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1307 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1308 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1309 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1310 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1311 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1312 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1313 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1314 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1315 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1316 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1317 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1318 { MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* sync sample */
1319 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1320 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1321 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1322 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1323 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1324 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1325 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1326 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1327 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1328 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1329 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1330 /* extra mp4 */
1331 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1332 /* QT atoms */
1333 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1334 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1335 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1336 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1337 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1338 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1339 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1340 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1341 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1342 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1343 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1344 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1345 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1346 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1347 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1348 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1349 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1350 #ifdef CONFIG_ZLIB
1351 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1352 #else
1353 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1354 #endif
1355 { 0L, mov_read_leaf }
1356 };
1357
1358 static void mov_free_stream_context(MOVStreamContext *sc)
1359 {
1360 if(sc) {
1361 av_free(sc->chunk_offsets);
1362 av_free(sc->sample_to_chunk);
1363 av_free(sc->sample_sizes);
1364 av_free(sc->header_data);
1365 av_free(sc);
1366 }
1367 }
1368
1369 static inline uint32_t mov_to_tag(uint8_t *buf)
1370 {
1371 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1372 }
1373
1374 static inline uint32_t to_be32(uint8_t *buf)
1375 {
1376 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1377 }
1378
1379 /* XXX: is it sufficient ? */
1380 static int mov_probe(AVProbeData *p)
1381 {
1382 unsigned int offset;
1383 uint32_t tag;
1384
1385 /* check file header */
1386 if (p->buf_size <= 12)
1387 return 0;
1388 offset = 0;
1389 for(;;) {
1390 /* ignore invalid offset */
1391 if ((offset + 8) > (unsigned int)p->buf_size)
1392 return 0;
1393 tag = mov_to_tag(p->buf + offset + 4);
1394 switch(tag) {
1395 case MKTAG( 'm', 'o', 'o', 'v' ):
1396 case MKTAG( 'w', 'i', 'd', 'e' ):
1397 case MKTAG( 'f', 'r', 'e', 'e' ):
1398 case MKTAG( 'm', 'd', 'a', 't' ):
1399 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1400 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1401 return AVPROBE_SCORE_MAX;
1402 case MKTAG( 'f', 't', 'y', 'p' ):
1403 case MKTAG( 's', 'k', 'i', 'p' ):
1404 offset = to_be32(p->buf+offset) + offset;
1405 break;
1406 default:
1407 /* unrecognized tag */
1408 return 0;
1409 }
1410 }
1411 return 0;
1412 }
1413
1414 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1415 {
1416 MOVContext *mov = (MOVContext *) s->priv_data;
1417 ByteIOContext *pb = &s->pb;
1418 int i, j, nb, err;
1419 MOV_atom_t atom = { 0, 0, 0 };
1420
1421 mov->fc = s;
1422 mov->parse_table = mov_default_parse_table;
1423 #if 0
1424 /* XXX: I think we should auto detect */
1425 if(s->iformat->name[1] == 'p')
1426 mov->mp4 = 1;
1427 #endif
1428 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1429 atom.size = url_filesize(url_fileno(pb));
1430 else
1431 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1432
1433 #ifdef DEBUG
1434 printf("filesz=%Ld\n", atom.size);
1435 #endif
1436
1437 /* check MOV header */
1438 err = mov_read_default(mov, pb, atom);
1439 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1440 fprintf(stderr, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1441 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1442 return -1;
1443 }
1444 #ifdef DEBUG
1445 printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1446 #endif
1447 /* some cleanup : make sure we are on the mdat atom */
1448 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1449 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1450
1451 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1452
1453 #ifdef DEBUG
1454 printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1455 #endif
1456
1457 #ifdef DEBUG
1458 printf("streams= %d\n", s->nb_streams);
1459 #endif
1460 mov->total_streams = nb = s->nb_streams;
1461
1462 #if 1
1463 for(i=0; i<s->nb_streams;) {
1464 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1465 av_free(s->streams[i]);
1466 for(j=i+1; j<s->nb_streams; j++)
1467 s->streams[j-1] = s->streams[j];
1468 s->nb_streams--;
1469 } else
1470 i++;
1471 }
1472 for(i=0; i<s->nb_streams;i++) {
1473 MOVStreamContext *sc;
1474 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1475 sc->ffindex = i;
1476 sc->is_ff_stream = 1;
1477 }
1478 #endif
1479 #ifdef DEBUG
1480 printf("real streams= %d\n", s->nb_streams);
1481 #endif
1482 return 0;
1483 }
1484
1485 /* Yes, this is ugly... I didn't write the specs of QT :p */
1486 /* XXX:remove useless commented code sometime */
1487 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1488 {
1489 MOVContext *mov = (MOVContext *) s->priv_data;
1490 MOVStreamContext *sc;
1491 int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1492 int i;
1493 int size;
1494 size = 0x0FFFFFFF;
1495
1496 #ifdef MOV_SPLIT_CHUNKS
1497 if (mov->partial) {
1498
1499 int idx;
1500
1501 sc = mov->partial;
1502 idx = sc->sample_to_chunk_index;
1503
1504 if (idx < 0) return 0;
1505 size = sc->sample_sizes[sc->current_sample];
1506
1507 sc->current_sample++;
1508 sc->left_in_chunk--;
1509
1510 if (sc->left_in_chunk <= 0)
1511 mov->partial = 0;
1512 offset = mov->next_chunk_offset;
1513 /* extract the sample */
1514
1515 goto readchunk;
1516 }
1517 #endif
1518
1519 again:
1520 sc = 0;
1521 for(i=0; i<mov->total_streams; i++) {
1522 MOVStreamContext *msc = mov->streams[i];
1523 //printf("MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1524 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1525 && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1526 sc = msc;
1527 offset = msc->chunk_offsets[msc->next_chunk];
1528 //printf("SELETED %Ld i:%d\n", offset, i);
1529 }
1530 }
1531 if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1532 return -1;
1533
1534 sc->next_chunk++;
1535
1536 if(mov->next_chunk_offset < offset) { /* some meta data */
1537 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1538 mov->next_chunk_offset = offset;
1539 }
1540
1541 //printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1542 if(!sc->is_ff_stream) {
1543 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1544 mov->next_chunk_offset = offset;
1545 offset = 0x0FFFFFFFFFFFFFFFLL;
1546 goto again;
1547 }
1548
1549 /* now get the chunk size... */
1550
1551 for(i=0; i<mov->total_streams; i++) {
1552 MOVStreamContext *msc = mov->streams[i];
1553 if ((msc->next_chunk < msc->chunk_count)
1554 && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1555 size = msc->chunk_offsets[msc->next_chunk] - offset;
1556 }
1557
1558 #ifdef MOV_MINOLTA_FIX
1559 //Make sure that size is according to sample_size (Needed by .mov files
1560 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1561 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1562 //but I have no such movies
1563 if (sc->sample_size > 0) {
1564 int foundsize=0;
1565 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1566 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1567 {
1568 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1569 }
1570 #ifdef DEBUG
1571 /*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);*/
1572 #endif
1573 }
1574 if( (foundsize>0) && (foundsize<size) )
1575 {
1576 #ifdef DEBUG
1577 /*printf("this size should actually be %d\n",foundsize);*/
1578 #endif
1579 size=foundsize;
1580 }
1581 }
1582 #endif //MOV_MINOLTA_FIX
1583
1584 #ifdef MOV_SPLIT_CHUNKS
1585 /* split chunks into samples */
1586 if (sc->sample_size == 0) {
1587 int idx = sc->sample_to_chunk_index;
1588 if ((idx + 1 < sc->sample_to_chunk_sz)
1589 && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1590 idx++;
1591 sc->sample_to_chunk_index = idx;
1592 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1593 mov->partial = sc;
1594 /* we'll have to get those samples before next chunk */
1595 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1596 size = sc->sample_sizes[sc->current_sample];
1597 }
1598
1599 sc->current_sample++;
1600 }
1601 #endif
1602
1603 readchunk:
1604 //printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1605 if(size == 0x0FFFFFFF)
1606 size = mov->mdat_size + mov->mdat_offset - offset;
1607 if(size < 0)
1608 return -1;
1609 if(size == 0)
1610 return -1;
1611 url_fseek(&s->pb, offset, SEEK_SET);
1612
1613 //printf("READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1614 if (sc->header_len > 0) {
1615 av_new_packet(pkt, size + sc->header_len);
1616 memcpy(pkt->data, sc->header_data, sc->header_len);
1617 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1618 /* free header */
1619 av_freep(&sc->header_data);
1620 sc->header_len = 0;
1621 } else {
1622 av_new_packet(pkt, size);
1623 get_buffer(&s->pb, pkt->data, pkt->size);
1624 }
1625 pkt->stream_index = sc->ffindex;
1626
1627 #ifdef DEBUG
1628 /*
1629 printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1630 for(i=0; i<8; i++)
1631 printf("%02x ", pkt->data[i]);
1632 for(i=0; i<8; i++)
1633 printf("%c ", (pkt->data[i]) & 0x7F);
1634 puts("");
1635 */
1636 #endif
1637
1638 mov->next_chunk_offset = offset + size;
1639
1640 return 0;
1641 }
1642
1643 static int mov_read_close(AVFormatContext *s)
1644 {
1645 int i;
1646 MOVContext *mov = (MOVContext *) s->priv_data;
1647 for(i=0; i<mov->total_streams; i++)
1648 mov_free_stream_context(mov->streams[i]);
1649 for(i=0; i<s->nb_streams; i++)
1650 av_freep(&s->streams[i]);
1651 /* free color tabs */
1652 for(i=0; i<mov->ctab_size; i++)
1653 av_freep(&mov->ctab[i]);
1654 av_freep(&mov->ctab);
1655 return 0;
1656 }
1657
1658 static AVInputFormat mov_iformat = {
1659 "mov",
1660 "QuickTime/MPEG4 format",
1661 sizeof(MOVContext),
1662 mov_probe,
1663 mov_read_header,
1664 mov_read_packet,
1665 mov_read_close,
1666 };
1667
1668 int mov_init(void)
1669 {
1670 av_register_input_format(&mov_iformat);
1671 return 0;
1672 }