efec9d41293b368b5d5543e5d32de2ac1c8cda92
[libav.git] / libavformat / mov.c
1 /*
2 * MOV decoder.
3 * Copyright (c) 2001 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 #include <limits.h>
21
22 #include "avformat.h"
23 #include "avi.h"
24
25 #ifdef CONFIG_ZLIB
26 #include <zlib.h>
27 #endif
28
29 /*
30 * First version by Francois Revol revol@free.fr
31 * Seek function by Gael Chardon gael.dev@4now.net
32 *
33 * Features and limitations:
34 * - reads most of the QT files I have (at least the structure),
35 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
36 * FIXED, Francois Revol, 07/17/2002
37 * - ffmpeg has nearly none of the usual QuickTime codecs,
38 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
39 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
40 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
41 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
42 * http://mpeg.telecomitalialab.com/faq.htm
43 * - the code is quite ugly... maybe I won't do it recursive next time :-)
44 * - seek is not supported with files that contain edit list
45 *
46 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47 * when coding this :) (it's a writer anyway)
48 *
49 * Reference documents:
50 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
51 * Apple:
52 * http://developer.apple.com/documentation/QuickTime/QTFF/
53 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
54 * QuickTime is a trademark of Apple (AFAIK :))
55 */
56
57 //#define DEBUG
58 #ifdef DEBUG
59 #include <stdio.h>
60 #include <fcntl.h>
61 #endif
62
63 #include "qtpalette.h"
64
65
66 /* Allows seeking (MOV_SPLIT_CHUNKS should also be defined) */
67 #define MOV_SEEK
68
69 /* allows chunk splitting - should work now... */
70 /* in case you can't read a file, try commenting */
71 #define MOV_SPLIT_CHUNKS
72
73 /* Special handling for movies created with Minolta Dimaxe Xi*/
74 /* this fix should not interfere with other .mov files, but just in case*/
75 #define MOV_MINOLTA_FIX
76
77 /* some streams in QT (and in MP4 mostly) aren't either video nor audio */
78 /* so we first list them as this, then clean up the list of streams we give back, */
79 /* getting rid of these */
80 #define CODEC_TYPE_MOV_OTHER (enum CodecType) 2
81
82 static const CodecTag mov_video_tags[] = {
83 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
84 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
85 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
86 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
87 /* Graphics */
88 /* Animation */
89 /* Apple video */
90 /* Kodak Photo CD */
91 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
92 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
93 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
94 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
95 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
96 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
97 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
98 /* Sorenson video */
99 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
100 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
101 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
102 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
103 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
104 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
105 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
106 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
107 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
108 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
111 /* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
112 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
113 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
114 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
115 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
116 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
117 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
118 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
119 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
120 { CODEC_ID_NONE, 0 },
121 };
122
123 static const CodecTag mov_audio_tags[] = {
124 /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
125 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
126 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
127 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
128 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
129 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
130 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
131 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
132 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
133 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
134
135 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
136 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
137 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
138 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
139 /* MP4 tags */
140 { CODEC_ID_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
141 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
142 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
143 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
144 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
145 { CODEC_ID_NONE, 0 },
146 };
147
148 /* the QuickTime file format is quite convoluted...
149 * it has lots of index tables, each indexing something in another one...
150 * Here we just use what is needed to read the chunks
151 */
152
153 typedef struct MOV_sample_to_chunk_tbl {
154 long first;
155 long count;
156 long id;
157 } MOV_sample_to_chunk_tbl;
158
159 typedef struct {
160 uint32_t type;
161 int64_t offset;
162 int64_t size; /* total size (excluding the size and type fields) */
163 } MOV_atom_t;
164
165 typedef struct {
166 int seed;
167 int flags;
168 int size;
169 void* clrs;
170 } MOV_ctab_t;
171
172 typedef struct {
173 uint8_t version;
174 uint32_t flags; // 24bit
175
176 /* 0x03 ESDescrTag */
177 uint16_t es_id;
178 #define MP4ODescrTag 0x01
179 #define MP4IODescrTag 0x02
180 #define MP4ESDescrTag 0x03
181 #define MP4DecConfigDescrTag 0x04
182 #define MP4DecSpecificDescrTag 0x05
183 #define MP4SLConfigDescrTag 0x06
184 #define MP4ContentIdDescrTag 0x07
185 #define MP4SupplContentIdDescrTag 0x08
186 #define MP4IPIPtrDescrTag 0x09
187 #define MP4IPMPPtrDescrTag 0x0A
188 #define MP4IPMPDescrTag 0x0B
189 #define MP4RegistrationDescrTag 0x0D
190 #define MP4ESIDIncDescrTag 0x0E
191 #define MP4ESIDRefDescrTag 0x0F
192 #define MP4FileIODescrTag 0x10
193 #define MP4FileODescrTag 0x11
194 #define MP4ExtProfileLevelDescrTag 0x13
195 #define MP4ExtDescrTagsStart 0x80
196 #define MP4ExtDescrTagsEnd 0xFE
197 uint8_t stream_priority;
198
199 /* 0x04 DecConfigDescrTag */
200 uint8_t object_type_id;
201 uint8_t stream_type;
202 /* XXX: really streamType is
203 * only 6bit, followed by:
204 * 1bit upStream
205 * 1bit reserved
206 */
207 uint32_t buffer_size_db; // 24
208 uint32_t max_bitrate;
209 uint32_t avg_bitrate;
210
211 /* 0x05 DecSpecificDescrTag */
212 uint8_t decoder_cfg_len;
213 uint8_t *decoder_cfg;
214
215 /* 0x06 SLConfigDescrTag */
216 uint8_t sl_config_len;
217 uint8_t *sl_config;
218 } MOV_esds_t;
219
220 struct MOVParseTableEntry;
221
222 typedef struct MOVStreamContext {
223 int ffindex; /* the ffmpeg stream id */
224 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
225 long next_chunk;
226 long chunk_count;
227 int64_t *chunk_offsets;
228 int32_t stts_count;
229 uint64_t *stts_data; /* concatenated data from the time-to-sample atom (count|duration) */
230 int32_t edit_count; /* number of 'edit' (elst atom) */
231 long sample_to_chunk_sz;
232 MOV_sample_to_chunk_tbl *sample_to_chunk;
233 long sample_to_chunk_index;
234 long sample_size;
235 long sample_count;
236 long *sample_sizes;
237 long keyframe_count;
238 long *keyframes;
239 int time_scale;
240 long current_sample;
241 long left_in_chunk; /* how many samples before next chunk */
242 /* specific MPEG4 header which is added at the beginning of the stream */
243 unsigned int header_len;
244 uint8_t *header_data;
245 MOV_esds_t esds;
246 } MOVStreamContext;
247
248 typedef struct MOVContext {
249 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) */
250 AVFormatContext *fc;
251 int time_scale;
252 int duration; /* duration of the longest track */
253 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
254 int found_mdat; /* we suppose we have enough data to read the file */
255 int64_t mdat_size;
256 int64_t mdat_offset;
257 int total_streams;
258 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
259 * but we need the info to be able to skip data from those streams in the 'mdat' section
260 */
261 MOVStreamContext *streams[MAX_STREAMS];
262
263 int64_t next_chunk_offset;
264 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
265 int ctab_size;
266 MOV_ctab_t **ctab; /* color tables */
267 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
268 /* NOTE: for recursion save to/ restore from local variable! */
269
270 AVPaletteControl palette_control;
271 } MOVContext;
272
273
274 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
275
276 /* those functions parse an atom */
277 /* return code:
278 1: found what I wanted, exit
279 0: continue to parse next atom
280 -1: error occured, exit
281 */
282 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
283
284 /* links atom IDs to parse functions */
285 typedef struct MOVParseTableEntry {
286 uint32_t type;
287 mov_parse_function func;
288 } MOVParseTableEntry;
289
290 #ifdef DEBUG
291 /*
292 * XXX: static sux, even more in a multithreaded environment...
293 * Avoid them. This is here just to help debugging.
294 */
295 static int debug_indent = 0;
296 void print_atom(const char *str, MOV_atom_t atom)
297 {
298 unsigned int tag, i;
299 tag = (unsigned int) atom.type;
300 i=debug_indent;
301 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
302 while(i--)
303 av_log(NULL, AV_LOG_DEBUG, "|");
304 av_log(NULL, AV_LOG_DEBUG, "parse:");
305 av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
306 str, tag & 0xff,
307 (tag >> 8) & 0xff,
308 (tag >> 16) & 0xff,
309 (tag >> 24) & 0xff,
310 (unsigned int)atom.offset,
311 (unsigned int)atom.size);
312 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
313 }
314 #else
315 #define print_atom(a,b)
316 #endif
317
318
319 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
320 {
321 print_atom("leaf", atom);
322
323 if (atom.size>1)
324 url_fskip(pb, atom.size);
325 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
326 return 0;
327 }
328
329 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
330 {
331 int64_t total_size = 0;
332 MOV_atom_t a;
333 int i;
334 int err = 0;
335
336 #ifdef DEBUG
337 print_atom("default", atom);
338 debug_indent++;
339 #endif
340
341 a.offset = atom.offset;
342
343 if (atom.size < 0)
344 atom.size = 0x7fffffffffffffffLL;
345 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
346 a.size = atom.size;
347 a.type=0L;
348 if(atom.size >= 8) {
349 a.size = get_be32(pb);
350 a.type = get_le32(pb);
351 }
352 total_size += 8;
353 a.offset += 8;
354 //av_log(NULL, AV_LOG_DEBUG, "type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
355 if (a.size == 1) { /* 64 bit extended size */
356 a.size = get_be64(pb) - 8;
357 a.offset += 8;
358 total_size += 8;
359 }
360 if (a.size == 0) {
361 a.size = atom.size - total_size;
362 if (a.size <= 8)
363 break;
364 }
365 for (i = 0; c->parse_table[i].type != 0L
366 && c->parse_table[i].type != a.type; i++)
367 /* empty */;
368
369 a.size -= 8;
370 // av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
371 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
372 // url_seek(pb, atom.offset+atom.size, SEEK_SET);
373 #ifdef DEBUG
374 print_atom("unknown", a);
375 #endif
376 url_fskip(pb, a.size);
377 } else {
378 #ifdef DEBUG
379 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
380 //print_atom(b, type, offset, size);
381 #endif
382 err = (c->parse_table[i].func)(c, pb, a);
383 }
384
385 a.offset += a.size;
386 total_size += a.size;
387 }
388
389 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
390 //av_log(NULL, AV_LOG_DEBUG, "RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
391 url_fskip(pb, atom.size - total_size);
392 }
393
394 #ifdef DEBUG
395 debug_indent--;
396 #endif
397 return err;
398 }
399
400 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
401 {
402 unsigned int len;
403 MOV_ctab_t *t;
404 //url_fskip(pb, atom.size); // for now
405 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
406 t = c->ctab[c->ctab_size];
407 t->seed = get_be32(pb);
408 t->flags = get_be16(pb);
409 t->size = get_be16(pb) + 1;
410 len = 2 * t->size * 4;
411 if (len > 0) {
412 t->clrs = av_malloc(len); // 16bit A R G B
413 if (t->clrs)
414 get_buffer(pb, t->clrs, len);
415 }
416
417 return 0;
418 }
419
420 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
421 {
422 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
423 int len = 0;
424 uint32_t type;
425 uint32_t ctype;
426
427 print_atom("hdlr", atom);
428
429 get_byte(pb); /* version */
430 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
431
432 /* component type */
433 ctype = get_le32(pb);
434 type = get_le32(pb); /* component subtype */
435
436 #ifdef DEBUG
437 av_log(NULL, AV_LOG_DEBUG, "ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
438 av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
439 #endif
440 #ifdef DEBUG
441 /* XXX: yeah this is ugly... */
442 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
443 if(type == MKTAG('v', 'i', 'd', 'e'))
444 puts("hdlr: vide");
445 else if(type == MKTAG('s', 'o', 'u', 'n'))
446 puts("hdlr: soun");
447 } else if(ctype == 0) { /* MP4 */
448 if(type == MKTAG('v', 'i', 'd', 'e'))
449 puts("hdlr: vide");
450 else if(type == MKTAG('s', 'o', 'u', 'n'))
451 puts("hdlr: soun");
452 else if(type == MKTAG('o', 'd', 's', 'm'))
453 puts("hdlr: odsm");
454 else if(type == MKTAG('s', 'd', 's', 'm'))
455 puts("hdlr: sdsm");
456 } else puts("hdlr: meta");
457 #endif
458
459 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
460 /* helps parsing the string hereafter... */
461 c->mp4 = 0;
462 if(type == MKTAG('v', 'i', 'd', 'e'))
463 st->codec.codec_type = CODEC_TYPE_VIDEO;
464 else if(type == MKTAG('s', 'o', 'u', 'n'))
465 st->codec.codec_type = CODEC_TYPE_AUDIO;
466 } else if(ctype == 0) { /* MP4 */
467 /* helps parsing the string hereafter... */
468 c->mp4 = 1;
469 if(type == MKTAG('v', 'i', 'd', 'e'))
470 st->codec.codec_type = CODEC_TYPE_VIDEO;
471 else if(type == MKTAG('s', 'o', 'u', 'n'))
472 st->codec.codec_type = CODEC_TYPE_AUDIO;
473 }
474 get_be32(pb); /* component manufacture */
475 get_be32(pb); /* component flags */
476 get_be32(pb); /* component flags mask */
477
478 if(atom.size <= 24)
479 return 0; /* nothing left to read */
480 /* XXX: MP4 uses a C string, not a pascal one */
481 /* component name */
482
483 if(c->mp4) {
484 /* .mp4: C string */
485 while(get_byte(pb) && (++len < (atom.size - 24)));
486 } else {
487 /* .mov: PASCAL string */
488 #ifdef DEBUG
489 char* buf;
490 #endif
491 len = get_byte(pb);
492 #ifdef DEBUG
493 buf = (uint8_t*) av_malloc(len+1);
494 if (buf) {
495 get_buffer(pb, buf, len);
496 buf[len] = '\0';
497 av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
498 av_free(buf);
499 } else
500 #endif
501 url_fskip(pb, len);
502 }
503
504 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
505 return 0;
506 }
507
508 static int mov_mp4_read_descr_len(ByteIOContext *pb)
509 {
510 int len = 0;
511 int count = 4;
512 while (count--) {
513 int c = get_byte(pb);
514 len = (len << 7) | (c & 0x7f);
515 if (!(c & 0x80))
516 break;
517 }
518 return len;
519 }
520
521 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
522 {
523 int len;
524 *tag = get_byte(pb);
525 len = mov_mp4_read_descr_len(pb);
526 #ifdef DEBUG
527 av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
528 #endif
529 return len;
530 }
531
532 static inline unsigned int get_be24(ByteIOContext *s)
533 {
534 unsigned int val;
535 val = get_byte(s) << 16;
536 val |= get_byte(s) << 8;
537 val |= get_byte(s);
538 return val;
539 }
540
541 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
542 {
543 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
544 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
545 int64_t start_pos = url_ftell(pb);
546 int tag, len;
547
548 print_atom("esds", atom);
549
550 /* Well, broken but suffisant for some MP4 streams */
551 get_be32(pb); /* version + flags */
552 len = mov_mp4_read_descr(pb, &tag);
553 if (tag == MP4ESDescrTag) {
554 get_be16(pb); /* ID */
555 get_byte(pb); /* priority */
556 } else
557 get_be16(pb); /* ID */
558
559 len = mov_mp4_read_descr(pb, &tag);
560 if (tag == MP4DecConfigDescrTag) {
561 sc->esds.object_type_id = get_byte(pb);
562 sc->esds.stream_type = get_byte(pb);
563 sc->esds.buffer_size_db = get_be24(pb);
564 sc->esds.max_bitrate = get_be32(pb);
565 sc->esds.avg_bitrate = get_be32(pb);
566
567 len = mov_mp4_read_descr(pb, &tag);
568 //av_log(NULL, AV_LOG_DEBUG, "LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
569 if (tag == MP4DecSpecificDescrTag) {
570 #ifdef DEBUG
571 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
572 #endif
573 st->codec.extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
574 if (st->codec.extradata) {
575 get_buffer(pb, st->codec.extradata, len);
576 st->codec.extradata_size = len;
577 }
578 }
579 }
580 /* in any case, skip garbage */
581 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
582 return 0;
583 }
584
585 /* this atom contains actual media data */
586 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
587 {
588 print_atom("mdat", atom);
589
590 if(atom.size == 0) /* wrong one (MP4) */
591 return 0;
592 c->found_mdat=1;
593 c->mdat_offset = atom.offset;
594 c->mdat_size = atom.size;
595 if(c->found_moov)
596 return 1; /* found both, just go */
597 url_fskip(pb, atom.size);
598 return 0; /* now go for moov */
599 }
600
601 /* this atom should contain all header atoms */
602 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
603 {
604 int err;
605
606 print_atom("moov", atom);
607
608 err = mov_read_default(c, pb, atom);
609 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
610 /* so we don't parse the whole file if over a network */
611 c->found_moov=1;
612 if(c->found_mdat)
613 return 1; /* found both, just go */
614 return 0; /* now go for mdat */
615 }
616
617
618 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
619 {
620 print_atom("mdhd", atom);
621
622 get_byte(pb); /* version */
623
624 get_byte(pb); get_byte(pb);
625 get_byte(pb); /* flags */
626
627 get_be32(pb); /* creation time */
628 get_be32(pb); /* modification time */
629
630 c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
631
632 #ifdef DEBUG
633 av_log(NULL, AV_LOG_DEBUG, "track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->time_scale); /* time scale */
634 #endif
635 get_be32(pb); /* duration */
636
637 get_be16(pb); /* language */
638 get_be16(pb); /* quality */
639
640 return 0;
641 }
642
643 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
644 {
645 print_atom("mvhd", atom);
646
647 get_byte(pb); /* version */
648 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
649
650 get_be32(pb); /* creation time */
651 get_be32(pb); /* modification time */
652 c->time_scale = get_be32(pb); /* time scale */
653 #ifdef DEBUG
654 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
655 #endif
656 c->duration = get_be32(pb); /* duration */
657 get_be32(pb); /* preferred scale */
658
659 get_be16(pb); /* preferred volume */
660
661 url_fskip(pb, 10); /* reserved */
662
663 url_fskip(pb, 36); /* display matrix */
664
665 get_be32(pb); /* preview time */
666 get_be32(pb); /* preview duration */
667 get_be32(pb); /* poster time */
668 get_be32(pb); /* selection time */
669 get_be32(pb); /* selection duration */
670 get_be32(pb); /* current time */
671 get_be32(pb); /* next track ID */
672
673 return 0;
674 }
675
676 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
677 {
678 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
679
680 // currently SVQ3 decoder expect full STSD header - so let's fake it
681 // this should be fixed and just SMI header should be passed
682 av_free(st->codec.extradata);
683 st->codec.extradata_size = 0x5a + atom.size;
684 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
685
686 if (st->codec.extradata) {
687 strcpy(st->codec.extradata, "SVQ3"); // fake
688 get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
689 //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
690 } else
691 url_fskip(pb, atom.size);
692
693 return 0;
694 }
695
696 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
697 {
698 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
699
700 av_free(st->codec.extradata);
701
702 st->codec.extradata_size = atom.size;
703 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
704
705 if (st->codec.extradata) {
706 get_buffer(pb, st->codec.extradata, atom.size);
707 } else
708 url_fskip(pb, atom.size);
709
710 return 0;
711 }
712
713 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
714 {
715 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
716 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
717 int entries, i;
718
719 print_atom("stco", atom);
720
721 get_byte(pb); /* version */
722 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
723
724 entries = get_be32(pb);
725 sc->chunk_count = entries;
726 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
727 if (!sc->chunk_offsets)
728 return -1;
729 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
730 for(i=0; i<entries; i++) {
731 sc->chunk_offsets[i] = get_be32(pb);
732 }
733 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
734 for(i=0; i<entries; i++) {
735 sc->chunk_offsets[i] = get_be64(pb);
736 }
737 } else
738 return -1;
739 #ifdef DEBUG
740 /*
741 for(i=0; i<entries; i++) {
742 av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
743 }
744 */
745 #endif
746 return 0;
747 }
748
749 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
750 {
751 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
752 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
753 int entries, frames_per_sample;
754 uint32_t format;
755
756 /* for palette traversal */
757 int color_depth;
758 int color_start;
759 int color_count;
760 int color_end;
761 int color_index;
762 int color_dec;
763 int color_greyscale;
764 unsigned char *color_table;
765 int j;
766 unsigned char r, g, b;
767
768 print_atom("stsd", atom);
769
770 get_byte(pb); /* version */
771 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
772
773 entries = get_be32(pb);
774
775 while(entries--) { //Parsing Sample description table
776 enum CodecID id;
777 int size = get_be32(pb); /* size */
778 format = get_le32(pb); /* data format */
779
780 get_be32(pb); /* reserved */
781 get_be16(pb); /* reserved */
782 get_be16(pb); /* index */
783
784 /* for MPEG4: set codec type by looking for it */
785 id = codec_get_id(mov_video_tags, format);
786 if (id >= 0) {
787 AVCodec *codec;
788 codec = avcodec_find_decoder(id);
789 if (codec)
790 st->codec.codec_type = codec->type;
791 }
792 #ifdef DEBUG
793 av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
794 size,
795 (format >> 0) & 0xff,
796 (format >> 8) & 0xff,
797 (format >> 16) & 0xff,
798 (format >> 24) & 0xff,
799 st->codec.codec_type);
800 #endif
801 st->codec.codec_tag = format;
802 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
803 MOV_atom_t a = { 0, 0, 0 };
804 st->codec.codec_id = id;
805 get_be16(pb); /* version */
806 get_be16(pb); /* revision level */
807 get_be32(pb); /* vendor */
808 get_be32(pb); /* temporal quality */
809 get_be32(pb); /* spacial quality */
810 st->codec.width = get_be16(pb); /* width */
811 st->codec.height = get_be16(pb); /* height */
812 #if 1
813 if (st->codec.codec_id == CODEC_ID_MPEG4) {
814 /* in some MPEG4 the width/height are not correct, so
815 we ignore this info */
816 st->codec.width = 0;
817 st->codec.height = 0;
818 }
819 #endif
820 get_be32(pb); /* horiz resolution */
821 get_be32(pb); /* vert resolution */
822 get_be32(pb); /* data size, always 0 */
823 frames_per_sample = get_be16(pb); /* frames per samples */
824 #ifdef DEBUG
825 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
826 #endif
827 get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
828
829 st->codec.bits_per_sample = get_be16(pb); /* depth */
830 st->codec.color_table_id = get_be16(pb); /* colortable id */
831
832 /* These are set in mov_read_stts and might already be set!
833 st->codec.frame_rate = 25;
834 st->codec.frame_rate_base = 1;
835 */
836 size -= (16+8*4+2+32+2*2);
837 #if 0
838 while (size >= 8) {
839 MOV_atom_t a;
840 int64_t start_pos;
841
842 a.size = get_be32(pb);
843 a.type = get_le32(pb);
844 size -= 8;
845 #ifdef DEBUG
846 av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
847 (a.type >> 0) & 0xff,
848 (a.type >> 8) & 0xff,
849 (a.type >> 16) & 0xff,
850 (a.type >> 24) & 0xff,
851 a.size, size);
852 #endif
853 start_pos = url_ftell(pb);
854
855 switch(a.type) {
856 case MKTAG('e', 's', 'd', 's'):
857 {
858 int tag, len;
859 /* Well, broken but suffisant for some MP4 streams */
860 get_be32(pb); /* version + flags */
861 len = mov_mp4_read_descr(pb, &tag);
862 if (tag == 0x03) {
863 /* MP4ESDescrTag */
864 get_be16(pb); /* ID */
865 get_byte(pb); /* priority */
866 len = mov_mp4_read_descr(pb, &tag);
867 if (tag != 0x04)
868 goto fail;
869 /* MP4DecConfigDescrTag */
870 get_byte(pb); /* objectTypeId */
871 get_be32(pb); /* streamType + buffer size */
872 get_be32(pb); /* max bit rate */
873 get_be32(pb); /* avg bit rate */
874 len = mov_mp4_read_descr(pb, &tag);
875 if (tag != 0x05)
876 goto fail;
877 /* MP4DecSpecificDescrTag */
878 #ifdef DEBUG
879 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
880 #endif
881 sc->header_data = av_mallocz(len);
882 if (sc->header_data) {
883 get_buffer(pb, sc->header_data, len);
884 sc->header_len = len;
885 }
886 }
887 /* in any case, skip garbage */
888 }
889 break;
890 default:
891 break;
892 }
893 fail:
894 av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
895 if (atom.size > 8) {
896 url_fskip(pb, (atom.size - 8) -
897 ((url_ftell(pb) - start_pos)));
898 size -= atom.size - 8;
899 }
900 }
901 if (size > 0) {
902 /* unknown extension */
903 url_fskip(pb, size);
904 }
905 #else
906
907 /* figure out the palette situation */
908 color_depth = st->codec.bits_per_sample & 0x1F;
909 color_greyscale = st->codec.bits_per_sample & 0x20;
910
911 /* if the depth is 2, 4, or 8 bpp, file is palettized */
912 if ((color_depth == 2) || (color_depth == 4) ||
913 (color_depth == 8)) {
914
915 if (color_greyscale) {
916
917 /* compute the greyscale palette */
918 color_count = 1 << color_depth;
919 color_index = 255;
920 color_dec = 256 / (color_count - 1);
921 for (j = 0; j < color_count; j++) {
922 r = g = b = color_index;
923 c->palette_control.palette[j] =
924 (r << 16) | (g << 8) | (b);
925 color_index -= color_dec;
926 if (color_index < 0)
927 color_index = 0;
928 }
929
930 } else if (st->codec.color_table_id & 0x08) {
931
932 /* if flag bit 3 is set, use the default palette */
933 color_count = 1 << color_depth;
934 if (color_depth == 2)
935 color_table = ff_qt_default_palette_4;
936 else if (color_depth == 4)
937 color_table = ff_qt_default_palette_16;
938 else
939 color_table = ff_qt_default_palette_256;
940
941 for (j = 0; j < color_count; j++) {
942 r = color_table[j * 4 + 0];
943 g = color_table[j * 4 + 1];
944 b = color_table[j * 4 + 2];
945 c->palette_control.palette[j] =
946 (r << 16) | (g << 8) | (b);
947 }
948
949 } else {
950
951 /* load the palette from the file */
952 color_start = get_be32(pb);
953 color_count = get_be16(pb);
954 color_end = get_be16(pb);
955 for (j = color_start; j <= color_end; j++) {
956 /* each R, G, or B component is 16 bits;
957 * only use the top 8 bits; skip alpha bytes
958 * up front */
959 get_byte(pb);
960 get_byte(pb);
961 r = get_byte(pb);
962 get_byte(pb);
963 g = get_byte(pb);
964 get_byte(pb);
965 b = get_byte(pb);
966 get_byte(pb);
967 c->palette_control.palette[j] =
968 (r << 16) | (g << 8) | (b);
969 }
970 }
971
972 st->codec.palctrl = &c->palette_control;
973 st->codec.palctrl->palette_changed = 1;
974 } else
975 st->codec.palctrl = NULL;
976
977 a.size = size;
978 mov_read_default(c, pb, a);
979 #endif
980 } else {
981 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
982 if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
983 {
984 #ifdef DEBUG
985 av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
986 #endif
987 get_be32(pb);get_be32(pb); //Reserved_8
988 get_be16(pb);//Reserved_2
989 get_be16(pb);//Reserved_2
990 get_be32(pb);//Reserved_4
991 get_be16(pb);//TimeScale
992 get_be16(pb);//Reserved_2
993
994 //AMRSpecificBox.(10 bytes)
995
996 get_be32(pb); //size
997 get_be32(pb); //type=='damr'
998 get_be32(pb); //vendor
999 get_byte(pb); //decoder version
1000 get_be16(pb); //mode_set
1001 get_byte(pb); //mode_change_period
1002 get_byte(pb); //frames_per_sample
1003
1004 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
1005 if(st->codec.codec_id==CODEC_ID_AMR_NB)
1006 {
1007 st->codec.sample_rate=8000;
1008 st->codec.channels=1;
1009 }
1010 else //AMR-WB
1011 {
1012 st->codec.sample_rate=16000;
1013 st->codec.channels=1;
1014 }
1015 st->codec.bits_per_sample=16;
1016 st->codec.bit_rate=0; /*It is not possible to tell this before we have
1017 an audio frame and even then every frame can be different*/
1018 }
1019 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1020 {
1021 //This is some stuff for the hint track, lets ignore it!
1022 //Do some mp4 auto detect.
1023 c->mp4=1;
1024 size-=(16);
1025 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1026 }
1027 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1028 {
1029 /* Handle mp4 audio tag */
1030 get_be32(pb); /* version */
1031 get_be32(pb);
1032 st->codec.channels = get_be16(pb); /* channels */
1033 st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1034 get_be32(pb);
1035 st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
1036 get_be16(pb);
1037 c->mp4=1;
1038 {
1039 MOV_atom_t a = { format, url_ftell(pb), size - (20 + 20 + 8) };
1040 mov_read_default(c, pb, a);
1041 }
1042 /* Get correct sample rate from extradata */
1043 if(st->codec.extradata_size) {
1044 const int samplerate_table[] = {
1045 96000, 88200, 64000, 48000, 44100, 32000,
1046 24000, 22050, 16000, 12000, 11025, 8000,
1047 7350, 0, 0, 0
1048 };
1049 unsigned char *px = st->codec.extradata;
1050 // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1051 int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1052 st->codec.sample_rate = samplerate_table[samplerate_index];
1053 }
1054 }
1055 else if(size>=(16+20))
1056 {//16 bytes read, reading atleast 20 more
1057 #ifdef DEBUG
1058 av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
1059 #endif
1060 uint16_t version = get_be16(pb); /* version */
1061 get_be16(pb); /* revision level */
1062 get_be32(pb); /* vendor */
1063
1064 st->codec.channels = get_be16(pb); /* channel count */
1065 st->codec.bits_per_sample = get_be16(pb); /* sample size */
1066
1067 /* handle specific s8 codec */
1068 get_be16(pb); /* compression id = 0*/
1069 get_be16(pb); /* packet size = 0 */
1070
1071 st->codec.sample_rate = ((get_be32(pb) >> 16));
1072 //av_log(NULL, AV_LOG_DEBUG, "CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1073
1074 switch (st->codec.codec_id) {
1075 case CODEC_ID_PCM_S16BE:
1076 if (st->codec.bits_per_sample == 8)
1077 st->codec.codec_id = CODEC_ID_PCM_S8;
1078 /* fall */
1079 case CODEC_ID_PCM_U8:
1080 st->codec.bit_rate = st->codec.sample_rate * 8;
1081 break;
1082 default:
1083 ;
1084 }
1085
1086 //Read QT version 1 fields. In version 0 theese dont exist
1087 #ifdef DEBUG
1088 av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1089 av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
1090 #endif
1091 if((version==1) && size>=(16+20+16))
1092 {
1093 get_be32(pb); /* samples per packet */
1094 get_be32(pb); /* bytes per packet */
1095 get_be32(pb); /* bytes per frame */
1096 get_be32(pb); /* bytes per sample */
1097 if(size>(16+20+16))
1098 {
1099 //Optional, additional atom-based fields
1100 #ifdef DEBUG
1101 av_log(NULL, AV_LOG_DEBUG, "offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
1102 (format >> 0) & 0xff,
1103 (format >> 8) & 0xff,
1104 (format >> 16) & 0xff,
1105 (format >> 24) & 0xff);
1106 #endif
1107 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1108 mov_read_default(c, pb, a);
1109 }
1110 }
1111 else
1112 {
1113 //We should be down to 0 bytes here, but lets make sure.
1114 size-=(16+20);
1115 #ifdef DEBUG
1116 if(size>0)
1117 av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
1118 #endif
1119 url_fskip(pb, size);
1120 }
1121 }
1122 else
1123 {
1124 size-=16;
1125 //Unknown size, but lets do our best and skip the rest.
1126 #ifdef DEBUG
1127 av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
1128 #endif
1129 url_fskip(pb, size);
1130 }
1131 }
1132 }
1133
1134 return 0;
1135 }
1136
1137 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1138 {
1139 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1140 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1141 int entries, i;
1142
1143 print_atom("stsc", atom);
1144
1145 get_byte(pb); /* version */
1146 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1147
1148 entries = get_be32(pb);
1149 #ifdef DEBUG
1150 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1151 #endif
1152 sc->sample_to_chunk_sz = entries;
1153 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1154 if (!sc->sample_to_chunk)
1155 return -1;
1156 for(i=0; i<entries; i++) {
1157 sc->sample_to_chunk[i].first = get_be32(pb);
1158 sc->sample_to_chunk[i].count = get_be32(pb);
1159 sc->sample_to_chunk[i].id = get_be32(pb);
1160 #ifdef DEBUG
1161 /* av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1162 #endif
1163 }
1164 return 0;
1165 }
1166
1167 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1168 {
1169 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1170 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1171 int entries, i;
1172
1173 print_atom("stss", atom);
1174
1175 get_byte(pb); /* version */
1176 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1177
1178 entries = get_be32(pb);
1179 sc->keyframe_count = entries;
1180 #ifdef DEBUG
1181 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1182 #endif
1183 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1184 if (!sc->keyframes)
1185 return -1;
1186 for(i=0; i<entries; i++) {
1187 sc->keyframes[i] = get_be32(pb);
1188 #ifdef DEBUG
1189 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1190 #endif
1191 }
1192 return 0;
1193 }
1194
1195 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1196 {
1197 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1198 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1199 int entries, i;
1200
1201 print_atom("stsz", atom);
1202
1203 get_byte(pb); /* version */
1204 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1205
1206 sc->sample_size = get_be32(pb);
1207 entries = get_be32(pb);
1208 sc->sample_count = entries;
1209 #ifdef DEBUG
1210 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1211 #endif
1212 if(sc->sample_size)
1213 return 0; /* there isn't any table following */
1214 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1215 if (!sc->sample_sizes)
1216 return -1;
1217 for(i=0; i<entries; i++) {
1218 sc->sample_sizes[i] = get_be32(pb);
1219 #ifdef DEBUG
1220 /* av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1221 #endif
1222 }
1223 return 0;
1224 }
1225
1226 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1227 {
1228 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1229 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1230 int entries, i;
1231 int64_t duration=0;
1232 int64_t total_sample_count=0;
1233
1234 print_atom("stts", atom);
1235
1236 get_byte(pb); /* version */
1237 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1238 entries = get_be32(pb);
1239
1240 c->streams[c->fc->nb_streams-1]->stts_count = entries;
1241 c->streams[c->fc->nb_streams-1]->stts_data = (uint64_t*) av_malloc(entries * sizeof(uint64_t));
1242
1243 #ifdef DEBUG
1244 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1245 #endif
1246 for(i=0; i<entries; i++) {
1247 int32_t sample_duration;
1248 int32_t sample_count;
1249
1250 sample_count=get_be32(pb);
1251 sample_duration = get_be32(pb);
1252 c->streams[c->fc->nb_streams - 1]->stts_data[i] = (uint64_t)sample_count<<32 | (uint64_t)sample_duration;
1253 #ifdef DEBUG
1254 av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1255 #endif
1256 duration+=sample_duration*sample_count;
1257 total_sample_count+=sample_count;
1258
1259 #if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1260
1261 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1262 st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1263 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1264 #ifdef DEBUG
1265 av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1266 #endif
1267 }
1268 #endif
1269 }
1270
1271 /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1272 if(duration>0)
1273 {
1274 av_reduce(
1275 &st->codec.frame_rate,
1276 &st->codec.frame_rate_base,
1277 c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
1278 duration,
1279 INT_MAX
1280 );
1281
1282 #ifdef DEBUG
1283 av_log(NULL, AV_LOG_DEBUG, "FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
1284 #endif
1285 }
1286 else
1287 {
1288 st->codec.frame_rate_base = 1;
1289 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1290 }
1291 return 0;
1292 }
1293
1294 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1295 {
1296 AVStream *st;
1297 MOVStreamContext *sc;
1298
1299 print_atom("trak", atom);
1300
1301 st = av_new_stream(c->fc, c->fc->nb_streams);
1302 if (!st) return -2;
1303 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1304 if (!sc) {
1305 av_free(st);
1306 return -1;
1307 }
1308
1309 sc->sample_to_chunk_index = -1;
1310 st->priv_data = sc;
1311 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1312 st->start_time = 0; /* XXX: check */
1313 st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1314 c->streams[c->fc->nb_streams-1] = sc;
1315
1316 return mov_read_default(c, pb, atom);
1317 }
1318
1319 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1320 {
1321 AVStream *st;
1322
1323 print_atom("tkhd", atom);
1324
1325 st = c->fc->streams[c->fc->nb_streams-1];
1326
1327 get_byte(pb); /* version */
1328
1329 get_byte(pb); get_byte(pb);
1330 get_byte(pb); /* flags */
1331 /*
1332 MOV_TRACK_ENABLED 0x0001
1333 MOV_TRACK_IN_MOVIE 0x0002
1334 MOV_TRACK_IN_PREVIEW 0x0004
1335 MOV_TRACK_IN_POSTER 0x0008
1336 */
1337
1338 get_be32(pb); /* creation time */
1339 get_be32(pb); /* modification time */
1340 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1341 get_be32(pb); /* reserved */
1342 st->start_time = 0; /* check */
1343 st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1344 get_be32(pb); /* reserved */
1345 get_be32(pb); /* reserved */
1346
1347 get_be16(pb); /* layer */
1348 get_be16(pb); /* alternate group */
1349 get_be16(pb); /* volume */
1350 get_be16(pb); /* reserved */
1351
1352 url_fskip(pb, 36); /* display matrix */
1353
1354 /* those are fixed-point */
1355 st->codec.width = get_be32(pb) >> 16; /* track width */
1356 st->codec.height = get_be32(pb) >> 16; /* track height */
1357
1358 return 0;
1359 }
1360
1361 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1362 /* like the files created with Adobe Premiere 5.0, for samples see */
1363 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1364 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1365 {
1366 int err;
1367
1368 #ifdef DEBUG
1369 print_atom("wide", atom);
1370 debug_indent++;
1371 #endif
1372 if (atom.size < 8)
1373 return 0; /* continue */
1374 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1375 url_fskip(pb, atom.size - 4);
1376 return 0;
1377 }
1378 atom.type = get_le32(pb);
1379 atom.offset += 8;
1380 atom.size -= 8;
1381 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1382 url_fskip(pb, atom.size);
1383 return 0;
1384 }
1385 err = mov_read_mdat(c, pb, atom);
1386 #ifdef DEBUG
1387 debug_indent--;
1388 #endif
1389 return err;
1390 }
1391
1392
1393 #ifdef CONFIG_ZLIB
1394 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1395 {
1396 return -1;
1397 }
1398
1399 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1400 {
1401 ByteIOContext ctx;
1402 uint8_t *cmov_data;
1403 uint8_t *moov_data; /* uncompressed data */
1404 long cmov_len, moov_len;
1405 int ret;
1406
1407 print_atom("cmov", atom);
1408
1409 get_be32(pb); /* dcom atom */
1410 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1411 return -1;
1412 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1413 av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
1414 return -1;
1415 }
1416 get_be32(pb); /* cmvd atom */
1417 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1418 return -1;
1419 moov_len = get_be32(pb); /* uncompressed size */
1420 cmov_len = atom.size - 6 * 4;
1421
1422 cmov_data = (uint8_t *) av_malloc(cmov_len);
1423 if (!cmov_data)
1424 return -1;
1425 moov_data = (uint8_t *) av_malloc(moov_len);
1426 if (!moov_data) {
1427 av_free(cmov_data);
1428 return -1;
1429 }
1430 get_buffer(pb, cmov_data, cmov_len);
1431 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1432 return -1;
1433 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1434 return -1;
1435 ctx.buf_end = ctx.buffer + moov_len;
1436 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1437 atom.offset = 0;
1438 atom.size = moov_len;
1439 #ifdef DEBUG
1440 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1441 #endif
1442 ret = mov_read_default(c, &ctx, atom);
1443 av_free(moov_data);
1444 av_free(cmov_data);
1445
1446 return ret;
1447 }
1448 #endif
1449
1450 /* edit list atom */
1451 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1452 {
1453 int i, edit_count;
1454 print_atom("elst", atom);
1455
1456 get_byte(pb); /* version */
1457 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1458 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1459
1460 for(i=0; i<edit_count; i++){
1461 get_be32(pb); /* Track duration */
1462 get_be32(pb); /* Media time */
1463 get_be32(pb); /* Media rate */
1464 }
1465 #ifdef DEBUG
1466 av_log(NULL, AV_LOG_DEBUG, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1467 #endif
1468 return 0;
1469 }
1470
1471 static const MOVParseTableEntry mov_default_parse_table[] = {
1472 /* mp4 atoms */
1473 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1474 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1475 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1476 { MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1477 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1478 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1479 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1480 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1481 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1482 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1483 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1484 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1485 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1486 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1487 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1488 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1489 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1490 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1491 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1492 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1493 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1494 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1495 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1496 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1497 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1498 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1499 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1500 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1501 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1502 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1503 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1504 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1505 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1506 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1507 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1508 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1509 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1510 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1511 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1512 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1513 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1514 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1515 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1516 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1517 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1518 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1519 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1520 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1521 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1522 /* extra mp4 */
1523 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1524 /* QT atoms */
1525 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1526 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1527 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1528 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1529 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1530 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1531 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1532 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1533 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1534 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1535 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1536 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1537 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1538 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1539 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1540 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1541 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1542 #ifdef CONFIG_ZLIB
1543 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1544 #else
1545 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1546 #endif
1547 { 0L, mov_read_leaf }
1548 };
1549
1550 static void mov_free_stream_context(MOVStreamContext *sc)
1551 {
1552 if(sc) {
1553 av_free(sc->chunk_offsets);
1554 av_free(sc->sample_to_chunk);
1555 av_free(sc->sample_sizes);
1556 av_free(sc->keyframes);
1557 av_free(sc->header_data);
1558 av_free(sc->stts_data);
1559 av_free(sc);
1560 }
1561 }
1562
1563 static inline uint32_t mov_to_tag(uint8_t *buf)
1564 {
1565 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1566 }
1567
1568 static inline uint32_t to_be32(uint8_t *buf)
1569 {
1570 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1571 }
1572
1573 /* XXX: is it sufficient ? */
1574 static int mov_probe(AVProbeData *p)
1575 {
1576 unsigned int offset;
1577 uint32_t tag;
1578
1579 /* check file header */
1580 if (p->buf_size <= 12)
1581 return 0;
1582 offset = 0;
1583 for(;;) {
1584 /* ignore invalid offset */
1585 if ((offset + 8) > (unsigned int)p->buf_size)
1586 return 0;
1587 tag = mov_to_tag(p->buf + offset + 4);
1588 switch(tag) {
1589 case MKTAG( 'm', 'o', 'o', 'v' ):
1590 case MKTAG( 'w', 'i', 'd', 'e' ):
1591 case MKTAG( 'f', 'r', 'e', 'e' ):
1592 case MKTAG( 'm', 'd', 'a', 't' ):
1593 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1594 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1595 return AVPROBE_SCORE_MAX;
1596 case MKTAG( 'f', 't', 'y', 'p' ):
1597 case MKTAG( 's', 'k', 'i', 'p' ):
1598 offset = to_be32(p->buf+offset) + offset;
1599 break;
1600 default:
1601 /* unrecognized tag */
1602 return 0;
1603 }
1604 }
1605 return 0;
1606 }
1607
1608 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1609 {
1610 MOVContext *mov = (MOVContext *) s->priv_data;
1611 ByteIOContext *pb = &s->pb;
1612 int i, j, nb, err;
1613 MOV_atom_t atom = { 0, 0, 0 };
1614
1615 mov->fc = s;
1616 mov->parse_table = mov_default_parse_table;
1617 #if 0
1618 /* XXX: I think we should auto detect */
1619 if(s->iformat->name[1] == 'p')
1620 mov->mp4 = 1;
1621 #endif
1622 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1623 atom.size = url_filesize(url_fileno(pb));
1624 else
1625 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1626
1627 #ifdef DEBUG
1628 av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
1629 #endif
1630
1631 /* check MOV header */
1632 err = mov_read_default(mov, pb, atom);
1633 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1634 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1635 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1636 return -1;
1637 }
1638 #ifdef DEBUG
1639 av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1640 #endif
1641 /* some cleanup : make sure we are on the mdat atom */
1642 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1643 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1644
1645 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1646
1647 #ifdef DEBUG
1648 av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
1649 #endif
1650
1651 #ifdef DEBUG
1652 av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
1653 #endif
1654 mov->total_streams = nb = s->nb_streams;
1655
1656 #if 1
1657 for(i=0; i<s->nb_streams;) {
1658 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1659 av_free(s->streams[i]);
1660 for(j=i+1; j<s->nb_streams; j++)
1661 s->streams[j-1] = s->streams[j];
1662 s->nb_streams--;
1663 } else
1664 i++;
1665 }
1666 for(i=0; i<s->nb_streams;i++) {
1667 MOVStreamContext *sc;
1668 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1669 sc->ffindex = i;
1670 sc->is_ff_stream = 1;
1671 }
1672 #endif
1673 #ifdef DEBUG
1674 av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
1675 #endif
1676 return 0;
1677 }
1678
1679 /* Yes, this is ugly... I didn't write the specs of QT :p */
1680 /* XXX:remove useless commented code sometime */
1681 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1682 {
1683 MOVContext *mov = (MOVContext *) s->priv_data;
1684 MOVStreamContext *sc;
1685 int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1686 int i, a, b, m;
1687 int size;
1688 size = 0x0FFFFFFF;
1689
1690 #ifdef MOV_SPLIT_CHUNKS
1691 if (mov->partial) {
1692
1693 int idx;
1694
1695 sc = mov->partial;
1696 idx = sc->sample_to_chunk_index;
1697
1698 if (idx < 0) return 0;
1699 size = sc->sample_sizes[sc->current_sample];
1700
1701 sc->current_sample++;
1702 sc->left_in_chunk--;
1703
1704 if (sc->left_in_chunk <= 0)
1705 mov->partial = 0;
1706 offset = mov->next_chunk_offset;
1707 /* extract the sample */
1708
1709 goto readchunk;
1710 }
1711 #endif
1712
1713 again:
1714 sc = 0;
1715 for(i=0; i<mov->total_streams; i++) {
1716 MOVStreamContext *msc = mov->streams[i];
1717 //av_log(NULL, AV_LOG_DEBUG, "MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1718 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1719 && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1720 sc = msc;
1721 offset = msc->chunk_offsets[msc->next_chunk];
1722 //av_log(NULL, AV_LOG_DEBUG, "SELETED %Ld i:%d\n", offset, i);
1723 }
1724 }
1725 if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1726 return -1;
1727
1728 sc->next_chunk++;
1729
1730 if(mov->next_chunk_offset < offset) { /* some meta data */
1731 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1732 mov->next_chunk_offset = offset;
1733 }
1734
1735 //av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1736 if(!sc->is_ff_stream) {
1737 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1738 mov->next_chunk_offset = offset;
1739 offset = 0x0FFFFFFFFFFFFFFFLL;
1740 goto again;
1741 }
1742
1743 /* now get the chunk size... */
1744
1745 for(i=0; i<mov->total_streams; i++) {
1746 MOVStreamContext *msc = mov->streams[i];
1747 if ((msc->next_chunk < msc->chunk_count)
1748 && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1749 size = msc->chunk_offsets[msc->next_chunk] - offset;
1750 }
1751
1752 #ifdef MOV_MINOLTA_FIX
1753 //Make sure that size is according to sample_size (Needed by .mov files
1754 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1755 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1756 //but I have no such movies
1757 if (sc->sample_size > 0) {
1758 int foundsize=0;
1759 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1760 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1761 {
1762 // I can't figure out why for PCM audio sample_size is always 1
1763 // (it should actually be channels*bits_per_second/8) but it is.
1764 AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1765 if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1766 foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1767 else
1768 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1769 }
1770 #ifdef DEBUG
1771 /*av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
1772 #endif
1773 }
1774 if( (foundsize>0) && (foundsize<size) )
1775 {
1776 #ifdef DEBUG
1777 /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
1778 #endif
1779 size=foundsize;
1780 }
1781 }
1782 #endif //MOV_MINOLTA_FIX
1783
1784 #ifdef MOV_SPLIT_CHUNKS
1785 /* split chunks into samples */
1786 if (sc->sample_size == 0) {
1787 int idx = sc->sample_to_chunk_index;
1788 if ((idx + 1 < sc->sample_to_chunk_sz)
1789 && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1790 idx++;
1791 sc->sample_to_chunk_index = idx;
1792 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1793 mov->partial = sc;
1794 /* we'll have to get those samples before next chunk */
1795 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1796 size = sc->sample_sizes[sc->current_sample];
1797 }
1798
1799 sc->current_sample++;
1800 }
1801 #endif
1802
1803 readchunk:
1804 //av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1805 if(size == 0x0FFFFFFF)
1806 size = mov->mdat_size + mov->mdat_offset - offset;
1807 if(size < 0)
1808 return -1;
1809 if(size == 0)
1810 return -1;
1811 url_fseek(&s->pb, offset, SEEK_SET);
1812
1813 //av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1814 if (sc->header_len > 0) {
1815 av_new_packet(pkt, size + sc->header_len);
1816 memcpy(pkt->data, sc->header_data, sc->header_len);
1817 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1818 /* free header */
1819 av_freep(&sc->header_data);
1820 sc->header_len = 0;
1821 } else {
1822 av_new_packet(pkt, size);
1823 get_buffer(&s->pb, pkt->data, pkt->size);
1824 }
1825 pkt->stream_index = sc->ffindex;
1826
1827 // If the keyframes table exists, mark any samples that are in the table as key frames.
1828 // If no table exists, treat very sample as a key frame.
1829 if (sc->keyframes) {
1830 a = 0;
1831 b = sc->keyframe_count - 1;
1832
1833 while (a < b) {
1834 m = (a + b + 1) >> 1;
1835 if (sc->keyframes[m] > sc->current_sample) {
1836 b = m - 1;
1837 } else {
1838 a = m;
1839 }
1840 }
1841
1842 if (sc->keyframes[a] == sc->current_sample)
1843 pkt->flags |= PKT_FLAG_KEY;
1844 }
1845 else
1846 pkt->flags |= PKT_FLAG_KEY;
1847
1848 #ifdef DEBUG
1849 /*
1850 av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1851 for(i=0; i<8; i++)
1852 av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
1853 for(i=0; i<8; i++)
1854 av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
1855 puts("");
1856 */
1857 #endif
1858
1859 mov->next_chunk_offset = offset + size;
1860
1861 return 0;
1862 }
1863
1864 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
1865 /**
1866 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
1867 */
1868 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1869 {
1870 MOVContext* mov = (MOVContext *) s->priv_data;
1871 MOVStreamContext* sc;
1872 int32_t i, a, b, m;
1873 int64_t sample_time;
1874 int64_t start_time;
1875 int32_t seek_sample, sample;
1876 int32_t duration;
1877 int32_t count;
1878 int32_t chunk;
1879 int32_t left_in_chunk;
1880 int64_t chunk_file_offset;
1881 int64_t sample_file_offset;
1882 int32_t first_chunk_sample;
1883 int32_t sample_to_chunk_idx;
1884 int mov_idx;
1885
1886 // Find the corresponding mov stream
1887 for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
1888 if (mov->streams[mov_idx]->ffindex == stream_index)
1889 break;
1890 if (mov_idx == mov->total_streams) {
1891 av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
1892 return -1;
1893 }
1894 sc = mov->streams[mov_idx];
1895
1896 // Step 1. Find the edit that contains the requested time (elst)
1897 if (sc->edit_count) {
1898 // FIXME should handle edit list
1899 av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
1900 return -1;
1901 }
1902
1903 // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
1904 #ifdef DEBUG
1905 av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
1906 #endif
1907 // convert timestamp from time_base unit to timescale unit
1908 sample_time = av_rescale( timestamp,
1909 (int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
1910 (int64_t)s->streams[stream_index]->time_base.den);
1911 start_time = 0; // FIXME use elst atom
1912 sample = 1; // sample are 0 based in table
1913 #ifdef DEBUG
1914 av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
1915 #endif
1916 for (i = 0; i < sc->stts_count; i++) {
1917 count = (uint32_t)(sc->stts_data[i]>>32);
1918 duration = (uint32_t)(sc->stts_data[i]&0xffff);
1919 //av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);
1920 //av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);
1921 if ((start_time + count*duration) > sample_time) {
1922 sample += (sample_time - start_time) / duration;
1923 break;
1924 }
1925 sample += count;
1926 start_time += count * duration;
1927 }
1928 /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
1929 is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
1930
1931 #ifdef DEBUG
1932 av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
1933 #endif
1934 if (sample > sc->sample_count) {
1935 av_log(s, AV_LOG_ERROR, "mov: sample pos is too high, unable to seek (req. sample=%i, sample count=%ld)\n", sample, sc->sample_count);
1936 return -1;
1937 }
1938
1939 // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
1940 if (sc->keyframes) {
1941 a = 0;
1942 b = sc->keyframe_count - 1;
1943 while (a < b) {
1944 m = (a + b + 1) >> 1;
1945 if (sc->keyframes[m] > sample) {
1946 b = m - 1;
1947 } else {
1948 a = m;
1949 }
1950 #ifdef DEBUG
1951 // av_log(s, AV_LOG_DEBUG, "a=%i (%i) b=%i (%i) m=%i (%i) stream #%i\n", a, sc->keyframes[a], b, sc->keyframes[b], m, sc->keyframes[m], mov_idx);
1952 #endif
1953 }
1954 seek_sample = sc->keyframes[a];
1955 }
1956 else
1957 seek_sample = sample; // else all samples are key frames
1958 #ifdef DEBUG
1959 av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
1960 #endif
1961
1962 // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
1963 for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
1964 b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
1965 if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
1966 break;
1967 first_chunk_sample += b;
1968 }
1969 chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
1970 left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
1971 first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
1972 sample_to_chunk_idx = i;
1973 #ifdef DEBUG
1974 av_log(s, AV_LOG_DEBUG, "Sample was found in chunk #%i at sample offset %i (idx %i)\n", chunk, seek_sample - first_chunk_sample, sample_to_chunk_idx);
1975 #endif
1976
1977 // Step 5. Find the offset of the chunk using the chunk offset atom
1978 if (!sc->chunk_offsets) {
1979 av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
1980 return -1;
1981 }
1982 if (chunk > sc->chunk_count) {
1983 av_log(s, AV_LOG_ERROR, "mov: chunk offset atom too short, unable to seek (req. chunk=%i, chunk count=%li)\n", chunk, sc->chunk_count);
1984 return -1;
1985 }
1986 chunk_file_offset = sc->chunk_offsets[chunk - 1];
1987 #ifdef DEBUG
1988 av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
1989 #endif
1990
1991 // Step 6. Find the byte offset within the chunk using the sample size atom
1992 sample_file_offset = chunk_file_offset;
1993 if (sc->sample_size)
1994 sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
1995 else {
1996 for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
1997 sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
1998 }
1999 }
2000 #ifdef DEBUG
2001 av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
2002 #endif
2003
2004 // Step 6. Update the parser
2005 mov->partial = sc;
2006 mov->next_chunk_offset = sample_file_offset;
2007 // Update current stream state
2008 sc->current_sample = seek_sample - 1; // zero based
2009 sc->left_in_chunk = left_in_chunk;
2010 sc->next_chunk = chunk; // +1 -1 (zero based)
2011 sc->sample_to_chunk_index = sample_to_chunk_idx;
2012
2013 // Update other streams
2014 for (i = 0; i<mov->total_streams; i++) {
2015 MOVStreamContext *msc;
2016 if (i == mov_idx) continue;
2017 // Find the nearest 'next' chunk
2018 msc = mov->streams[i];
2019 a = 0;
2020 b = msc->chunk_count - 1;
2021 while (a < b) {
2022 m = (a + b + 1) >> 1;
2023 if (msc->chunk_offsets[m] > chunk_file_offset) {
2024 b = m - 1;
2025 } else {
2026 a = m;
2027 }
2028 #ifdef DEBUG
2029 /* av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2030 , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m], i); */
2031 #endif
2032 }
2033 msc->next_chunk = a;
2034 if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2035 msc->next_chunk ++;
2036 #ifdef DEBUG
2037 av_log(s, AV_LOG_DEBUG, "Nearest next chunk for stream #%i is #%i @%lli\n", i, msc->next_chunk+1, msc->chunk_offsets[msc->next_chunk]);
2038 #endif
2039 // Compute sample count and index in the sample_to_chunk table (what a pity)
2040 msc->sample_to_chunk_index = 0;
2041 msc->current_sample = 0;
2042 for(; msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2043 && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2044 msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2045 * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2046 }
2047 msc->current_sample += (msc->next_chunk - (msc->sample_to_chunk[msc->sample_to_chunk_index].first - 1)) * sc->sample_to_chunk[msc->sample_to_chunk_index].count;
2048 msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2049 #ifdef DEBUG
2050 av_log(s, AV_LOG_DEBUG, "Next Sample for stream #%i is #%i @%i\n", i, msc->current_sample + 1, msc->sample_to_chunk_index + 1);
2051 #endif
2052 }
2053 return 0;
2054 }
2055 #endif
2056
2057 static int mov_read_close(AVFormatContext *s)
2058 {
2059 int i;
2060 MOVContext *mov = (MOVContext *) s->priv_data;
2061 for(i=0; i<mov->total_streams; i++)
2062 mov_free_stream_context(mov->streams[i]);
2063 /* free color tabs */
2064 for(i=0; i<mov->ctab_size; i++)
2065 av_freep(&mov->ctab[i]);
2066 av_freep(&mov->ctab);
2067 return 0;
2068 }
2069
2070 static AVInputFormat mov_iformat = {
2071 "mov,mp4,m4a,3gp",
2072 "QuickTime/MPEG4 format",
2073 sizeof(MOVContext),
2074 mov_probe,
2075 mov_read_header,
2076 mov_read_packet,
2077 mov_read_close,
2078 #if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2079 mov_read_seek,
2080 #endif
2081 };
2082
2083 int mov_init(void)
2084 {
2085 av_register_input_format(&mov_iformat);
2086 return 0;
2087 }