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Added codec id for QCELP.
[FFMpeg-mirror/ordered_chapters.git] / libavformat / mov.c
blob84a5b6722844c21a91537f85d22f67217a76614e
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 #include <limits.h>
21
22 //#define DEBUG
23
24 #include "avformat.h"
25 #include "riff.h"
26 #include "isom.h"
27
28 #ifdef CONFIG_ZLIB
29 #include <zlib.h>
30 #endif
31
32 /*
33 * First version by Francois Revol revol@free.fr
34 * Seek function by Gael Chardon gael.dev@4now.net
35 *
36 * Features and limitations:
37 * - reads most of the QT files I have (at least the structure),
38 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
39 * FIXED, Francois Revol, 07/17/2002
40 * - ffmpeg has nearly none of the usual QuickTime codecs,
41 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
42 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
43 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
44 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
45 * http://mpeg.telecomitalialab.com/faq.htm
46 * - the code is quite ugly... maybe I won't do it recursive next time :-)
47 * - seek is not supported with files that contain edit list
48 *
49 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
50 * when coding this :) (it's a writer anyway)
51 *
52 * Reference documents:
53 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
54 * Apple:
55 * http://developer.apple.com/documentation/QuickTime/QTFF/
56 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
57 * QuickTime is a trademark of Apple (AFAIK :))
58 */
59
60 #include "qtpalette.h"
61
62
63 #undef NDEBUG
64 #include <assert.h>
65
66 static const CodecTag mov_video_tags[] = {
67 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
68 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
69 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
70 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
71 /* Graphics */
72 /* Animation */
73 /* Apple video */
74 /* Kodak Photo CD */
75 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
76 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
77 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
78 { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
79 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
80 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
81 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
82 /* Sorenson video */
83 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
84 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
85 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
86 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
87 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
88 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
89 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
90 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
91 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
92 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
93 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
94 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
95 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
96 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
97 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
98 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
99 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
100 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
101 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
102 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
103 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
104 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 produced by Sony HD camera */
105 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* HDV produced by FCP */
106 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
107 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
108 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
109 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
111 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
112 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
113 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
114 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
115 { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
116 //{ CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
117 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
118 { CODEC_ID_NONE, 0 },
119 };
120
121 static const CodecTag mov_audio_tags[] = {
122 { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
123 { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
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_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
127 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
128 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
129 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
130 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
131 { CODEC_ID_ADPCM_MS, MKTAG('m', 's', 0x00, 0x02) }, /* MS 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_MP3, 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_AAC, 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_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
146 { CODEC_ID_QDM2,MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
147 { CODEC_ID_NONE, 0 },
148 };
149
150 /* the QuickTime file format is quite convoluted...
151 * it has lots of index tables, each indexing something in another one...
152 * Here we just use what is needed to read the chunks
153 */
154
155 typedef struct MOV_sample_to_chunk_tbl {
156 long first;
157 long count;
158 long id;
159 } MOV_sample_to_chunk_tbl;
160
161 typedef struct {
162 uint32_t type;
163 int64_t offset;
164 int64_t size; /* total size (excluding the size and type fields) */
165 } MOV_atom_t;
166
167 typedef struct {
168 int seed;
169 int flags;
170 int size;
171 void* clrs;
172 } MOV_ctab_t;
173
174 typedef struct MOV_mdat_atom_s {
175 offset_t offset;
176 int64_t size;
177 } MOV_mdat_atom_t;
178
179 typedef struct {
180 uint8_t version;
181 uint32_t flags; // 24bit
182
183 /* 0x03 ESDescrTag */
184 uint16_t es_id;
185 #define MP4ODescrTag 0x01
186 #define MP4IODescrTag 0x02
187 #define MP4ESDescrTag 0x03
188 #define MP4DecConfigDescrTag 0x04
189 #define MP4DecSpecificDescrTag 0x05
190 #define MP4SLConfigDescrTag 0x06
191 #define MP4ContentIdDescrTag 0x07
192 #define MP4SupplContentIdDescrTag 0x08
193 #define MP4IPIPtrDescrTag 0x09
194 #define MP4IPMPPtrDescrTag 0x0A
195 #define MP4IPMPDescrTag 0x0B
196 #define MP4RegistrationDescrTag 0x0D
197 #define MP4ESIDIncDescrTag 0x0E
198 #define MP4ESIDRefDescrTag 0x0F
199 #define MP4FileIODescrTag 0x10
200 #define MP4FileODescrTag 0x11
201 #define MP4ExtProfileLevelDescrTag 0x13
202 #define MP4ExtDescrTagsStart 0x80
203 #define MP4ExtDescrTagsEnd 0xFE
204 uint8_t stream_priority;
205
206 /* 0x04 DecConfigDescrTag */
207 uint8_t object_type_id;
208 uint8_t stream_type;
209 /* XXX: really streamType is
210 * only 6bit, followed by:
211 * 1bit upStream
212 * 1bit reserved
213 */
214 uint32_t buffer_size_db; // 24
215 uint32_t max_bitrate;
216 uint32_t avg_bitrate;
217
218 /* 0x05 DecSpecificDescrTag */
219 uint8_t decoder_cfg_len;
220 uint8_t *decoder_cfg;
221
222 /* 0x06 SLConfigDescrTag */
223 uint8_t sl_config_len;
224 uint8_t *sl_config;
225 } MOV_esds_t;
226
227 struct MOVParseTableEntry;
228
229 typedef struct MOVStreamContext {
230 int ffindex; /* the ffmpeg stream id */
231 long next_chunk;
232 long chunk_count;
233 int64_t *chunk_offsets;
234 int stts_count;
235 Time2Sample *stts_data;
236 int ctts_count;
237 Time2Sample *ctts_data;
238 int edit_count; /* number of 'edit' (elst atom) */
239 long sample_to_chunk_sz;
240 MOV_sample_to_chunk_tbl *sample_to_chunk;
241 int sample_to_ctime_index;
242 int sample_to_ctime_sample;
243 long sample_size;
244 long sample_count;
245 long *sample_sizes;
246 long keyframe_count;
247 long *keyframes;
248 int time_scale;
249 int time_rate;
250 long current_sample;
251 MOV_esds_t esds;
252 AVRational sample_size_v1;
253 } MOVStreamContext;
254
255 typedef struct MOVContext {
256 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) */
257 AVFormatContext *fc;
258 int time_scale;
259 int64_t duration; /* duration of the longest track */
260 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
261 int found_mdat; /* we suppose we have enough data to read the file */
262 int64_t mdat_size;
263 int64_t mdat_offset;
264 int total_streams;
265 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
266 * but we need the info to be able to skip data from those streams in the 'mdat' section
267 */
268 MOVStreamContext *streams[MAX_STREAMS];
269
270 int ctab_size;
271 MOV_ctab_t **ctab; /* color tables */
272 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
273 /* NOTE: for recursion save to/ restore from local variable! */
274
275 AVPaletteControl palette_control;
276 MOV_mdat_atom_t *mdat_list;
277 int mdat_count;
278 } MOVContext;
279
280
281 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
282
283 /* those functions parse an atom */
284 /* return code:
285 1: found what I wanted, exit
286 0: continue to parse next atom
287 -1: error occured, exit
288 */
289 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
290
291 /* links atom IDs to parse functions */
292 typedef struct MOVParseTableEntry {
293 uint32_t type;
294 mov_parse_function func;
295 } MOVParseTableEntry;
296
297 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
298 {
299 if (atom.size>1)
300 url_fskip(pb, atom.size);
301 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
302 return 0;
303 }
304
305 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
306 {
307 int64_t total_size = 0;
308 MOV_atom_t a;
309 int i;
310 int err = 0;
311
312 a.offset = atom.offset;
313
314 if (atom.size < 0)
315 atom.size = 0x7fffffffffffffffLL;
316 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
317 a.size = atom.size;
318 a.type=0L;
319 if(atom.size >= 8) {
320 a.size = get_be32(pb);
321 a.type = get_le32(pb);
322 }
323 total_size += 8;
324 a.offset += 8;
325 dprintf("type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
326 if (a.size == 1) { /* 64 bit extended size */
327 a.size = get_be64(pb) - 8;
328 a.offset += 8;
329 total_size += 8;
330 }
331 if (a.size == 0) {
332 a.size = atom.size - total_size;
333 if (a.size <= 8)
334 break;
335 }
336 for (i = 0; c->parse_table[i].type != 0L
337 && c->parse_table[i].type != a.type; i++)
338 /* empty */;
339
340 a.size -= 8;
341
342 if(a.size < 0)
343 break;
344
345 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
346 url_fskip(pb, a.size);
347 } else {
348 offset_t start_pos = url_ftell(pb);
349 int64_t left;
350 err = (c->parse_table[i].func)(c, pb, a);
351 left = a.size - url_ftell(pb) + start_pos;
352 if (left > 0) /* skip garbage at atom end */
353 url_fskip(pb, left);
354 }
355
356 a.offset += a.size;
357 total_size += a.size;
358 }
359
360 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
361 url_fskip(pb, atom.size - total_size);
362 }
363
364 return err;
365 }
366
367 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
368 {
369 #if 1
370 url_fskip(pb, atom.size); // for now
371 #else
372 VERY VERY BROKEN, NEVER execute this, needs rewrite
373 unsigned int len;
374 MOV_ctab_t *t;
375 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
376 t = c->ctab[c->ctab_size];
377 t->seed = get_be32(pb);
378 t->flags = get_be16(pb);
379 t->size = get_be16(pb) + 1;
380 len = 2 * t->size * 4;
381 if (len > 0) {
382 t->clrs = av_malloc(len); // 16bit A R G B
383 if (t->clrs)
384 get_buffer(pb, t->clrs, len);
385 }
386 #endif
387
388 return 0;
389 }
390
391 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
392 {
393 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
394 int len = 0;
395 uint32_t type;
396 uint32_t ctype;
397
398 get_byte(pb); /* version */
399 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
400
401 /* component type */
402 ctype = get_le32(pb);
403 type = get_le32(pb); /* component subtype */
404
405 dprintf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
406 dprintf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
407 if(ctype == MKTAG('m', 'h', 'l', 'r')) /* MOV */
408 c->mp4 = 0;
409 else if(ctype == 0)
410 c->mp4 = 1;
411 if(type == MKTAG('v', 'i', 'd', 'e'))
412 st->codec->codec_type = CODEC_TYPE_VIDEO;
413 else if(type == MKTAG('s', 'o', 'u', 'n'))
414 st->codec->codec_type = CODEC_TYPE_AUDIO;
415 get_be32(pb); /* component manufacture */
416 get_be32(pb); /* component flags */
417 get_be32(pb); /* component flags mask */
418
419 if(atom.size <= 24)
420 return 0; /* nothing left to read */
421 /* XXX: MP4 uses a C string, not a pascal one */
422 /* component name */
423
424 if(c->mp4) {
425 /* .mp4: C string */
426 while(get_byte(pb) && (++len < (atom.size - 24)));
427 } else {
428 /* .mov: PASCAL string */
429 len = get_byte(pb);
430 url_fskip(pb, len);
431 }
432
433 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
434 return 0;
435 }
436
437 static int mov_mp4_read_descr_len(ByteIOContext *pb)
438 {
439 int len = 0;
440 int count = 4;
441 while (count--) {
442 int c = get_byte(pb);
443 len = (len << 7) | (c & 0x7f);
444 if (!(c & 0x80))
445 break;
446 }
447 return len;
448 }
449
450 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
451 {
452 int len;
453 *tag = get_byte(pb);
454 len = mov_mp4_read_descr_len(pb);
455 dprintf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
456 return len;
457 }
458
459 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
460 {
461 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
462 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
463 int tag, len;
464
465 /* Well, broken but suffisant for some MP4 streams */
466 get_be32(pb); /* version + flags */
467 len = mov_mp4_read_descr(pb, &tag);
468 if (tag == MP4ESDescrTag) {
469 get_be16(pb); /* ID */
470 get_byte(pb); /* priority */
471 } else
472 get_be16(pb); /* ID */
473
474 len = mov_mp4_read_descr(pb, &tag);
475 if (tag == MP4DecConfigDescrTag) {
476 sc->esds.object_type_id = get_byte(pb);
477 sc->esds.stream_type = get_byte(pb);
478 sc->esds.buffer_size_db = get_be24(pb);
479 sc->esds.max_bitrate = get_be32(pb);
480 sc->esds.avg_bitrate = get_be32(pb);
481
482 st->codec->codec_id= codec_get_id(ff_mov_obj_type, sc->esds.object_type_id);
483 dprintf("esds object type id %d\n", sc->esds.object_type_id);
484 len = mov_mp4_read_descr(pb, &tag);
485 if (tag == MP4DecSpecificDescrTag) {
486 dprintf("Specific MPEG4 header len=%d\n", len);
487 st->codec->extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
488 if (st->codec->extradata) {
489 get_buffer(pb, st->codec->extradata, len);
490 st->codec->extradata_size = len;
491 /* from mplayer */
492 if ((*(uint8_t *)st->codec->extradata >> 3) == 29) {
493 st->codec->codec_id = CODEC_ID_MP3ON4;
494 }
495 }
496 }
497 }
498 return 0;
499 }
500
501 /* this atom contains actual media data */
502 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
503 {
504 if(atom.size == 0) /* wrong one (MP4) */
505 return 0;
506 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
507 c->mdat_list[c->mdat_count].offset = atom.offset;
508 c->mdat_list[c->mdat_count].size = atom.size;
509 c->mdat_count++;
510 c->found_mdat=1;
511 c->mdat_offset = atom.offset;
512 c->mdat_size = atom.size;
513 if(c->found_moov)
514 return 1; /* found both, just go */
515 url_fskip(pb, atom.size);
516 return 0; /* now go for moov */
517 }
518
519 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
520 {
521 uint32_t type = get_le32(pb);
522
523 /* from mplayer */
524 switch (type) {
525 case MKTAG('i', 's', 'o', 'm'):
526 case MKTAG('m', 'p', '4', '1'):
527 case MKTAG('m', 'p', '4', '2'):
528 case MKTAG('3', 'g', 'p', '1'):
529 case MKTAG('3', 'g', 'p', '2'):
530 case MKTAG('3', 'g', '2', 'a'):
531 case MKTAG('3', 'g', 'p', '3'):
532 case MKTAG('3', 'g', 'p', '4'):
533 case MKTAG('3', 'g', 'p', '5'):
534 case MKTAG('m', 'm', 'p', '4'): /* Mobile MP4 */
535 case MKTAG('M', '4', 'A', ' '): /* Apple iTunes AAC-LC Audio */
536 case MKTAG('M', '4', 'P', ' '): /* Apple iTunes AAC-LC Protected Audio */
537 case MKTAG('m', 'j', 'p', '2'): /* Motion Jpeg 2000 */
538 c->mp4 = 1;
539 case MKTAG('q', 't', ' ', ' '):
540 default:
541 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
542 }
543 get_be32(pb); /* minor version */
544 url_fskip(pb, atom.size - 8);
545 return 0;
546 }
547
548 /* this atom should contain all header atoms */
549 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
550 {
551 int err;
552
553 err = mov_read_default(c, pb, atom);
554 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
555 /* so we don't parse the whole file if over a network */
556 c->found_moov=1;
557 if(c->found_mdat)
558 return 1; /* found both, just go */
559 return 0; /* now go for mdat */
560 }
561
562
563 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
564 {
565 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
566 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
567 int version = get_byte(pb);
568 int lang;
569
570 if (version > 1)
571 return 1; /* unsupported */
572
573 get_byte(pb); get_byte(pb);
574 get_byte(pb); /* flags */
575
576 if (version == 1) {
577 get_be64(pb);
578 get_be64(pb);
579 } else {
580 get_be32(pb); /* creation time */
581 get_be32(pb); /* modification time */
582 }
583
584 sc->time_scale = get_be32(pb);
585 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
586
587 lang = get_be16(pb); /* language */
588 ff_mov_lang_to_iso639(lang, st->language);
589 get_be16(pb); /* quality */
590
591 return 0;
592 }
593
594 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
595 {
596 int version = get_byte(pb); /* version */
597 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
598
599 if (version == 1) {
600 get_be64(pb);
601 get_be64(pb);
602 } else {
603 get_be32(pb); /* creation time */
604 get_be32(pb); /* modification time */
605 }
606 c->time_scale = get_be32(pb); /* time scale */
607 #ifdef DEBUG
608 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
609 #endif
610 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
611 get_be32(pb); /* preferred scale */
612
613 get_be16(pb); /* preferred volume */
614
615 url_fskip(pb, 10); /* reserved */
616
617 url_fskip(pb, 36); /* display matrix */
618
619 get_be32(pb); /* preview time */
620 get_be32(pb); /* preview duration */
621 get_be32(pb); /* poster time */
622 get_be32(pb); /* selection time */
623 get_be32(pb); /* selection duration */
624 get_be32(pb); /* current time */
625 get_be32(pb); /* next track ID */
626
627 return 0;
628 }
629
630 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
631 {
632 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
633
634 if((uint64_t)atom.size > (1<<30))
635 return -1;
636
637 // currently SVQ3 decoder expect full STSD header - so let's fake it
638 // this should be fixed and just SMI header should be passed
639 av_free(st->codec->extradata);
640 st->codec->extradata_size = 0x5a + atom.size;
641 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
642
643 if (st->codec->extradata) {
644 strcpy(st->codec->extradata, "SVQ3"); // fake
645 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
646 dprintf("Reading SMI %"PRId64" %s\n", atom.size, (char*)st->codec->extradata + 0x5a);
647 } else
648 url_fskip(pb, atom.size);
649
650 return 0;
651 }
652
653 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
654 {
655 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
656 int little_endian = get_be16(pb);
657
658 if (little_endian) {
659 switch (st->codec->codec_id) {
660 case CODEC_ID_PCM_S24BE:
661 st->codec->codec_id = CODEC_ID_PCM_S24LE;
662 break;
663 case CODEC_ID_PCM_S32BE:
664 st->codec->codec_id = CODEC_ID_PCM_S32LE;
665 break;
666 default:
667 break;
668 }
669 }
670 return 0;
671 }
672
673 static int mov_read_alac(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
674 {
675 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
676
677 // currently ALAC decoder expect full atom header - so let's fake it
678 // this should be fixed and just ALAC header should be passed
679
680 av_free(st->codec->extradata);
681 st->codec->extradata_size = 36;
682 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
683
684 if (st->codec->extradata) {
685 strcpy(st->codec->extradata + 4, "alac"); // fake
686 get_buffer(pb, st->codec->extradata + 8, 36 - 8);
687 dprintf("Reading alac %d %s\n", st->codec->extradata_size, (char*)st->codec->extradata);
688 } else
689 url_fskip(pb, atom.size);
690 return 0;
691 }
692
693 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
694 {
695 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
696
697 if((uint64_t)atom.size > (1<<30))
698 return -1;
699
700 if (st->codec->codec_id == CODEC_ID_QDM2) {
701 // pass all frma atom to codec, needed at least for QDM2
702 av_free(st->codec->extradata);
703 st->codec->extradata_size = atom.size;
704 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
705
706 if (st->codec->extradata) {
707 get_buffer(pb, st->codec->extradata, atom.size);
708 } else
709 url_fskip(pb, atom.size);
710 } else if (atom.size > 8) { /* to read frma, esds atoms */
711 mov_read_default(c, pb, atom);
712 } else
713 url_fskip(pb, atom.size);
714 return 0;
715 }
716
717 static int mov_read_jp2h(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
718 {
719 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
720
721 if((uint64_t)atom.size > (1<<30))
722 return -1;
723
724 av_free(st->codec->extradata);
725
726 st->codec->extradata_size = atom.size + 8;
727 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
728
729 /* pass all jp2h atom to codec */
730 if (st->codec->extradata) {
731 strcpy(st->codec->extradata + 4, "jp2h");
732 get_buffer(pb, st->codec->extradata + 8, atom.size);
733 } else
734 url_fskip(pb, atom.size);
735 return 0;
736 }
737
738 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
739 {
740 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
741
742 if((uint64_t)atom.size > (1<<30))
743 return -1;
744
745 av_free(st->codec->extradata);
746
747 st->codec->extradata_size = atom.size;
748 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
749
750 if (st->codec->extradata) {
751 get_buffer(pb, st->codec->extradata, atom.size);
752 } else
753 url_fskip(pb, atom.size);
754
755 return 0;
756 }
757
758 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
759 {
760 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
761 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
762 unsigned int i, entries;
763
764 get_byte(pb); /* version */
765 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
766
767 entries = get_be32(pb);
768
769 if(entries >= UINT_MAX/sizeof(int64_t))
770 return -1;
771
772 sc->chunk_count = entries;
773 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
774 if (!sc->chunk_offsets)
775 return -1;
776 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
777 for(i=0; i<entries; i++) {
778 sc->chunk_offsets[i] = get_be32(pb);
779 }
780 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
781 for(i=0; i<entries; i++) {
782 sc->chunk_offsets[i] = get_be64(pb);
783 }
784 } else
785 return -1;
786
787 return 0;
788 }
789
790 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
791 {
792 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
793 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
794 int entries, frames_per_sample;
795 uint32_t format;
796 uint8_t codec_name[32];
797
798 /* for palette traversal */
799 int color_depth;
800 int color_start;
801 int color_count;
802 int color_end;
803 int color_index;
804 int color_dec;
805 int color_greyscale;
806 unsigned char *color_table;
807 int j;
808 unsigned char r, g, b;
809
810 get_byte(pb); /* version */
811 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
812
813 entries = get_be32(pb);
814
815 while(entries--) { //Parsing Sample description table
816 enum CodecID id;
817 MOV_atom_t a = { 0, 0, 0 };
818 offset_t start_pos = url_ftell(pb);
819 int size = get_be32(pb); /* size */
820 format = get_le32(pb); /* data format */
821
822 get_be32(pb); /* reserved */
823 get_be16(pb); /* reserved */
824 get_be16(pb); /* index */
825
826 if (st->codec->codec_tag) {
827 /* multiple fourcc, just skip for now */
828 url_fskip(pb, size - (url_ftell(pb) - start_pos));
829 continue;
830 }
831
832 st->codec->codec_tag = format;
833 id = codec_get_id(mov_audio_tags, format);
834 if (id > 0) {
835 st->codec->codec_type = CODEC_TYPE_AUDIO;
836 } else if (format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
837 id = codec_get_id(mov_video_tags, format);
838 if (id <= 0)
839 id = codec_get_id(codec_bmp_tags, format);
840 if (id > 0)
841 st->codec->codec_type = CODEC_TYPE_VIDEO;
842 }
843
844 dprintf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
845 size,
846 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
847 st->codec->codec_type);
848
849 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
850 st->codec->codec_id = id;
851 get_be16(pb); /* version */
852 get_be16(pb); /* revision level */
853 get_be32(pb); /* vendor */
854 get_be32(pb); /* temporal quality */
855 get_be32(pb); /* spacial quality */
856
857 st->codec->width = get_be16(pb); /* width */
858 st->codec->height = get_be16(pb); /* height */
859
860 get_be32(pb); /* horiz resolution */
861 get_be32(pb); /* vert resolution */
862 get_be32(pb); /* data size, always 0 */
863 frames_per_sample = get_be16(pb); /* frames per samples */
864 #ifdef DEBUG
865 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
866 #endif
867 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
868 if (codec_name[0] <= 31) {
869 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
870 st->codec->codec_name[codec_name[0]] = 0;
871 }
872
873 st->codec->bits_per_sample = get_be16(pb); /* depth */
874 st->codec->color_table_id = get_be16(pb); /* colortable id */
875
876 /* figure out the palette situation */
877 color_depth = st->codec->bits_per_sample & 0x1F;
878 color_greyscale = st->codec->bits_per_sample & 0x20;
879
880 /* if the depth is 2, 4, or 8 bpp, file is palettized */
881 if ((color_depth == 2) || (color_depth == 4) ||
882 (color_depth == 8)) {
883
884 if (color_greyscale) {
885
886 /* compute the greyscale palette */
887 color_count = 1 << color_depth;
888 color_index = 255;
889 color_dec = 256 / (color_count - 1);
890 for (j = 0; j < color_count; j++) {
891 r = g = b = color_index;
892 c->palette_control.palette[j] =
893 (r << 16) | (g << 8) | (b);
894 color_index -= color_dec;
895 if (color_index < 0)
896 color_index = 0;
897 }
898
899 } else if (st->codec->color_table_id & 0x08) {
900
901 /* if flag bit 3 is set, use the default palette */
902 color_count = 1 << color_depth;
903 if (color_depth == 2)
904 color_table = ff_qt_default_palette_4;
905 else if (color_depth == 4)
906 color_table = ff_qt_default_palette_16;
907 else
908 color_table = ff_qt_default_palette_256;
909
910 for (j = 0; j < color_count; j++) {
911 r = color_table[j * 4 + 0];
912 g = color_table[j * 4 + 1];
913 b = color_table[j * 4 + 2];
914 c->palette_control.palette[j] =
915 (r << 16) | (g << 8) | (b);
916 }
917
918 } else {
919
920 /* load the palette from the file */
921 color_start = get_be32(pb);
922 color_count = get_be16(pb);
923 color_end = get_be16(pb);
924 for (j = color_start; j <= color_end; j++) {
925 /* each R, G, or B component is 16 bits;
926 * only use the top 8 bits; skip alpha bytes
927 * up front */
928 get_byte(pb);
929 get_byte(pb);
930 r = get_byte(pb);
931 get_byte(pb);
932 g = get_byte(pb);
933 get_byte(pb);
934 b = get_byte(pb);
935 get_byte(pb);
936 c->palette_control.palette[j] =
937 (r << 16) | (g << 8) | (b);
938 }
939 }
940
941 st->codec->palctrl = &c->palette_control;
942 st->codec->palctrl->palette_changed = 1;
943 } else
944 st->codec->palctrl = NULL;
945 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
946 int bits_per_sample;
947 uint16_t version = get_be16(pb);
948
949 st->codec->codec_id = id;
950 get_be16(pb); /* revision level */
951 get_be32(pb); /* vendor */
952
953 st->codec->channels = get_be16(pb); /* channel count */
954 dprintf("audio channels %d\n", st->codec->channels);
955 st->codec->bits_per_sample = get_be16(pb); /* sample size */
956 /* do we need to force to 16 for AMR ? */
957
958 /* handle specific s8 codec */
959 get_be16(pb); /* compression id = 0*/
960 get_be16(pb); /* packet size = 0 */
961
962 st->codec->sample_rate = ((get_be32(pb) >> 16));
963
964 switch (st->codec->codec_id) {
965 case CODEC_ID_PCM_S8:
966 case CODEC_ID_PCM_U8:
967 if (st->codec->bits_per_sample == 16)
968 st->codec->codec_id = CODEC_ID_PCM_S16BE;
969 break;
970 case CODEC_ID_PCM_S16LE:
971 case CODEC_ID_PCM_S16BE:
972 if (st->codec->bits_per_sample == 8)
973 st->codec->codec_id = CODEC_ID_PCM_S8;
974 break;
975 case CODEC_ID_AMR_WB:
976 st->codec->sample_rate = 16000; /* should really we ? */
977 st->codec->channels=1; /* really needed */
978 break;
979 case CODEC_ID_AMR_NB:
980 st->codec->sample_rate = 8000; /* should really we ? */
981 st->codec->channels=1; /* really needed */
982 break;
983 default:
984 break;
985 }
986
987 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
988 if (bits_per_sample) {
989 st->codec->bits_per_sample = bits_per_sample;
990 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
991 }
992
993 //Read QT version 1 fields. In version 0 theese dont exist
994 dprintf("version =%d mp4=%d\n",version,c->mp4);
995 if(version==1) {
996 sc->sample_size_v1.den = get_be32(pb); /* samples per packet */
997 get_be32(pb); /* bytes per packet */
998 sc->sample_size_v1.num = get_be32(pb); /* bytes per frame */
999 get_be32(pb); /* bytes per sample */
1000 } else if(version==2) {
1001 get_be32(pb); /* sizeof struct only */
1002 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1003 st->codec->channels = get_be32(pb);
1004 get_be32(pb); /* always 0x7F000000 */
1005 get_be32(pb); /* bits per channel if sound is uncompressed */
1006 get_be32(pb); /* lcpm format specific flag */
1007 get_be32(pb); /* bytes per audio packet if constant */
1008 get_be32(pb); /* lpcm frames per audio packet if constant */
1009 }
1010 } else {
1011 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1012 url_fskip(pb, size - (url_ftell(pb) - start_pos));
1013 }
1014 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1015 a.size = size - (url_ftell(pb) - start_pos);
1016 if (a.size > 8)
1017 mov_read_default(c, pb, a);
1018 else if (a.size > 0)
1019 url_fskip(pb, a.size);
1020 }
1021
1022 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
1023 st->codec->sample_rate= sc->time_scale;
1024 }
1025
1026 switch (st->codec->codec_id) {
1027 #ifdef CONFIG_FAAD
1028 case CODEC_ID_AAC:
1029 #endif
1030 #ifdef CONFIG_VORBIS_DECODER
1031 case CODEC_ID_VORBIS:
1032 #endif
1033 case CODEC_ID_MP3ON4:
1034 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1035 break;
1036 default:
1037 break;
1038 }
1039
1040 return 0;
1041 }
1042
1043 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1044 {
1045 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1046 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1047 unsigned int i, entries;
1048
1049 get_byte(pb); /* version */
1050 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1051
1052 entries = get_be32(pb);
1053
1054 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1055 return -1;
1056
1057 #ifdef DEBUG
1058 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1059 #endif
1060 sc->sample_to_chunk_sz = entries;
1061 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1062 if (!sc->sample_to_chunk)
1063 return -1;
1064 for(i=0; i<entries; i++) {
1065 sc->sample_to_chunk[i].first = get_be32(pb);
1066 sc->sample_to_chunk[i].count = get_be32(pb);
1067 sc->sample_to_chunk[i].id = get_be32(pb);
1068 }
1069 return 0;
1070 }
1071
1072 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1073 {
1074 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1075 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1076 unsigned int i, entries;
1077
1078 get_byte(pb); /* version */
1079 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1080
1081 entries = get_be32(pb);
1082
1083 if(entries >= UINT_MAX / sizeof(long))
1084 return -1;
1085
1086 sc->keyframe_count = entries;
1087 #ifdef DEBUG
1088 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1089 #endif
1090 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1091 if (!sc->keyframes)
1092 return -1;
1093 for(i=0; i<entries; i++) {
1094 sc->keyframes[i] = get_be32(pb);
1095 #ifdef DEBUG
1096 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1097 #endif
1098 }
1099 return 0;
1100 }
1101
1102 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1103 {
1104 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1105 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1106 unsigned int i, entries, sample_size;
1107
1108 get_byte(pb); /* version */
1109 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1110
1111 sample_size = get_be32(pb);
1112 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1113 sc->sample_size = sample_size;
1114 entries = get_be32(pb);
1115 if(entries >= UINT_MAX / sizeof(long))
1116 return -1;
1117
1118 sc->sample_count = entries;
1119 if (sample_size)
1120 return 0;
1121
1122 #ifdef DEBUG
1123 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1124 #endif
1125 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1126 if (!sc->sample_sizes)
1127 return -1;
1128 for(i=0; i<entries; i++) {
1129 sc->sample_sizes[i] = get_be32(pb);
1130 #ifdef DEBUG
1131 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1132 #endif
1133 }
1134 return 0;
1135 }
1136
1137 static int mov_read_stts(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 unsigned int i, entries;
1142 int64_t duration=0;
1143 int64_t total_sample_count=0;
1144
1145 get_byte(pb); /* version */
1146 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1147 entries = get_be32(pb);
1148 if(entries >= UINT_MAX / sizeof(Time2Sample))
1149 return -1;
1150
1151 sc->stts_count = entries;
1152 sc->stts_data = av_malloc(entries * sizeof(Time2Sample));
1153
1154 #ifdef DEBUG
1155 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1156 #endif
1157
1158 sc->time_rate=0;
1159
1160 for(i=0; i<entries; i++) {
1161 int sample_duration;
1162 int sample_count;
1163
1164 sample_count=get_be32(pb);
1165 sample_duration = get_be32(pb);
1166 sc->stts_data[i].count= sample_count;
1167 sc->stts_data[i].duration= sample_duration;
1168
1169 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1170
1171 dprintf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1172
1173 duration+=(int64_t)sample_duration*sample_count;
1174 total_sample_count+=sample_count;
1175 }
1176
1177 st->nb_frames= total_sample_count;
1178 if(duration)
1179 st->duration= duration;
1180 return 0;
1181 }
1182
1183 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1184 {
1185 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1186 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1187 unsigned int i, entries;
1188
1189 get_byte(pb); /* version */
1190 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1191 entries = get_be32(pb);
1192 if(entries >= UINT_MAX / sizeof(Time2Sample))
1193 return -1;
1194
1195 sc->ctts_count = entries;
1196 sc->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1197
1198 dprintf("track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1199
1200 for(i=0; i<entries; i++) {
1201 int count =get_be32(pb);
1202 int duration =get_be32(pb);
1203
1204 if (duration < 0) {
1205 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1206 sc->ctts_count = 0;
1207 url_fskip(pb, 8 * (entries - i - 1));
1208 break;
1209 }
1210 sc->ctts_data[i].count = count;
1211 sc->ctts_data[i].duration= duration;
1212
1213 sc->time_rate= ff_gcd(sc->time_rate, duration);
1214 }
1215 return 0;
1216 }
1217
1218 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1219 {
1220 AVStream *st;
1221 MOVStreamContext *sc;
1222
1223 st = av_new_stream(c->fc, c->fc->nb_streams);
1224 if (!st) return -2;
1225 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1226 if (!sc) {
1227 av_free(st);
1228 return -1;
1229 }
1230
1231 st->priv_data = sc;
1232 st->codec->codec_type = CODEC_TYPE_DATA;
1233 st->start_time = 0; /* XXX: check */
1234 c->streams[c->fc->nb_streams-1] = sc;
1235
1236 return mov_read_default(c, pb, atom);
1237 }
1238
1239 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1240 {
1241 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1242 int version = get_byte(pb);
1243
1244 get_byte(pb); get_byte(pb);
1245 get_byte(pb); /* flags */
1246 /*
1247 MOV_TRACK_ENABLED 0x0001
1248 MOV_TRACK_IN_MOVIE 0x0002
1249 MOV_TRACK_IN_PREVIEW 0x0004
1250 MOV_TRACK_IN_POSTER 0x0008
1251 */
1252
1253 if (version == 1) {
1254 get_be64(pb);
1255 get_be64(pb);
1256 } else {
1257 get_be32(pb); /* creation time */
1258 get_be32(pb); /* modification time */
1259 }
1260 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1261 get_be32(pb); /* reserved */
1262 st->start_time = 0; /* check */
1263 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1264 get_be32(pb); /* reserved */
1265 get_be32(pb); /* reserved */
1266
1267 get_be16(pb); /* layer */
1268 get_be16(pb); /* alternate group */
1269 get_be16(pb); /* volume */
1270 get_be16(pb); /* reserved */
1271
1272 url_fskip(pb, 36); /* display matrix */
1273
1274 /* those are fixed-point */
1275 get_be32(pb); /* track width */
1276 get_be32(pb); /* track height */
1277
1278 return 0;
1279 }
1280
1281 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1282 /* like the files created with Adobe Premiere 5.0, for samples see */
1283 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1284 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1285 {
1286 int err;
1287
1288 if (atom.size < 8)
1289 return 0; /* continue */
1290 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1291 url_fskip(pb, atom.size - 4);
1292 return 0;
1293 }
1294 atom.type = get_le32(pb);
1295 atom.offset += 8;
1296 atom.size -= 8;
1297 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1298 url_fskip(pb, atom.size);
1299 return 0;
1300 }
1301 err = mov_read_mdat(c, pb, atom);
1302 return err;
1303 }
1304
1305
1306 #ifdef CONFIG_ZLIB
1307 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1308 {
1309 return -1;
1310 }
1311
1312 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1313 {
1314 ByteIOContext ctx;
1315 uint8_t *cmov_data;
1316 uint8_t *moov_data; /* uncompressed data */
1317 long cmov_len, moov_len;
1318 int ret;
1319
1320 get_be32(pb); /* dcom atom */
1321 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1322 return -1;
1323 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1324 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1325 return -1;
1326 }
1327 get_be32(pb); /* cmvd atom */
1328 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1329 return -1;
1330 moov_len = get_be32(pb); /* uncompressed size */
1331 cmov_len = atom.size - 6 * 4;
1332
1333 cmov_data = (uint8_t *) av_malloc(cmov_len);
1334 if (!cmov_data)
1335 return -1;
1336 moov_data = (uint8_t *) av_malloc(moov_len);
1337 if (!moov_data) {
1338 av_free(cmov_data);
1339 return -1;
1340 }
1341 get_buffer(pb, cmov_data, cmov_len);
1342 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1343 return -1;
1344 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1345 return -1;
1346 ctx.buf_end = ctx.buffer + moov_len;
1347 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1348 atom.offset = 0;
1349 atom.size = moov_len;
1350 #ifdef DEBUG
1351 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1352 #endif
1353 ret = mov_read_default(c, &ctx, atom);
1354 av_free(moov_data);
1355 av_free(cmov_data);
1356
1357 return ret;
1358 }
1359 #endif
1360
1361 /* edit list atom */
1362 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1363 {
1364 int i, edit_count;
1365
1366 get_byte(pb); /* version */
1367 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1368 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1369
1370 for(i=0; i<edit_count; i++){
1371 get_be32(pb); /* Track duration */
1372 get_be32(pb); /* Media time */
1373 get_be32(pb); /* Media rate */
1374 }
1375 dprintf("track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1376 return 0;
1377 }
1378
1379 static const MOVParseTableEntry mov_default_parse_table[] = {
1380 /* mp4 atoms */
1381 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1382 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1383 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1384 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1385 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1386 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1387 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1388 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1389 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1390 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1391 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1392 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1393 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1394 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1395 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1396 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1397 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_jp2h },
1398 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1399 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1400 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1401 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1402 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1403 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1404 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1405 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1406 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1407 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1408 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1409 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1410 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1411 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1412 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1413 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1414 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_alac }, /* alac specific atom */
1415 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1416 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1417 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1418 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1419 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1420 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1421 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1422 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1423 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1424 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1425 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1426 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1427 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1428 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1429 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1430 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1431 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
1432 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1433 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1434 /* extra mp4 */
1435 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1436 /* QT atoms */
1437 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1438 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1439 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1440 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1441 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1442 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1443 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1444 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1445 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1446 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1447 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1448 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1449 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1450 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1451 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1452 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1453 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1454 #ifdef CONFIG_ZLIB
1455 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1456 #else
1457 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1458 #endif
1459 { 0L, mov_read_leaf }
1460 };
1461
1462 static void mov_free_stream_context(MOVStreamContext *sc)
1463 {
1464 if(sc) {
1465 av_freep(&sc->ctts_data);
1466 av_freep(&sc);
1467 }
1468 }
1469
1470 /* XXX: is it sufficient ? */
1471 static int mov_probe(AVProbeData *p)
1472 {
1473 unsigned int offset;
1474 uint32_t tag;
1475 int score = 0;
1476
1477 /* check file header */
1478 if (p->buf_size <= 12)
1479 return 0;
1480 offset = 0;
1481 for(;;) {
1482 /* ignore invalid offset */
1483 if ((offset + 8) > (unsigned int)p->buf_size)
1484 return score;
1485 tag = LE_32(p->buf + offset + 4);
1486 switch(tag) {
1487 /* check for obvious tags */
1488 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1489 case MKTAG( 'm', 'o', 'o', 'v' ):
1490 case MKTAG( 'm', 'd', 'a', 't' ):
1491 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1492 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1493 return AVPROBE_SCORE_MAX;
1494 /* those are more common words, so rate then a bit less */
1495 case MKTAG( 'w', 'i', 'd', 'e' ):
1496 case MKTAG( 'f', 'r', 'e', 'e' ):
1497 case MKTAG( 'j', 'u', 'n', 'k' ):
1498 case MKTAG( 'p', 'i', 'c', 't' ):
1499 return AVPROBE_SCORE_MAX - 5;
1500 case MKTAG( 'f', 't', 'y', 'p' ):
1501 case MKTAG( 's', 'k', 'i', 'p' ):
1502 case MKTAG( 'u', 'u', 'i', 'd' ):
1503 offset = BE_32(p->buf+offset) + offset;
1504 /* if we only find those cause probedata is too small at least rate them */
1505 score = AVPROBE_SCORE_MAX - 50;
1506 break;
1507 default:
1508 /* unrecognized tag */
1509 return score;
1510 }
1511 }
1512 return score;
1513 }
1514
1515 static void mov_build_index(MOVContext *mov, AVStream *st)
1516 {
1517 MOVStreamContext *sc = st->priv_data;
1518 offset_t current_offset;
1519 int64_t current_dts = 0;
1520 int stts_index = 0;
1521 int stsc_index = 0;
1522 int stss_index = 0;
1523 int i, j, k;
1524
1525 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO) {
1526 int keyframe, sample_size;
1527 int current_sample = 0;
1528 int stts_sample = 0;
1529 int distance = 0;
1530
1531 st->nb_frames = sc->sample_count;
1532 for (i = 0; i < sc->chunk_count; i++) {
1533 current_offset = sc->chunk_offsets[i];
1534 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1535 stsc_index++;
1536 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1537 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1538 if (keyframe) {
1539 distance = 0;
1540 if (stss_index + 1 < sc->keyframe_count)
1541 stss_index++;
1542 }
1543 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1544 dprintf("AVIndex stream %d, sample %d, offset %llx, dts %lld, size %d, distance %d, keyframe %d\n",
1545 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1546 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1547 current_offset += sample_size;
1548 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1549 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1550 distance++;
1551 stts_sample++;
1552 if (current_sample + 1 < sc->sample_count)
1553 current_sample++;
1554 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1555 stts_sample = 0;
1556 stts_index++;
1557 }
1558 }
1559 }
1560 } else { /* read whole chunk */
1561 int chunk_samples, chunk_size, chunk_duration;
1562
1563 for (i = 0; i < sc->chunk_count; i++) {
1564 current_offset = sc->chunk_offsets[i];
1565 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1566 stsc_index++;
1567 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1568 /* get chunk size */
1569 if (sc->sample_size > 1 || st->codec->bits_per_sample == 8)
1570 chunk_size = chunk_samples * sc->sample_size;
1571 else if (sc->sample_size_v1.den > 0 && (chunk_samples * sc->sample_size_v1.num % sc->sample_size_v1.den == 0))
1572 chunk_size = chunk_samples * sc->sample_size_v1.num / sc->sample_size_v1.den;
1573 else { /* workaround to find nearest next chunk offset */
1574 chunk_size = INT_MAX;
1575 for (j = 0; j < mov->total_streams; j++) {
1576 MOVStreamContext *msc = mov->streams[j];
1577
1578 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1579 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1580 chunk_size = msc->chunk_offsets[k] - current_offset;
1581 msc->next_chunk = k;
1582 break;
1583 }
1584 }
1585 }
1586 /* check for last chunk */
1587 if (chunk_size == INT_MAX)
1588 for (j = 0; j < mov->mdat_count; j++) {
1589 dprintf("mdat %d, offset %llx, size %lld, current offset %llx\n",
1590 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1591 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1592 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1593 }
1594 assert(chunk_size != INT_MAX);
1595 for (j = 0; j < mov->total_streams; j++) {
1596 mov->streams[j]->next_chunk = 0;
1597 }
1598 }
1599 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1600 /* get chunk duration */
1601 chunk_duration = 0;
1602 while (chunk_samples > 0) {
1603 if (chunk_samples < sc->stts_data[stts_index].count) {
1604 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1605 sc->stts_data[stts_index].count -= chunk_samples;
1606 break;
1607 } else {
1608 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1609 chunk_samples -= sc->stts_data[stts_index].count;
1610 if (stts_index + 1 < sc->stts_count) {
1611 stts_index++;
1612 }
1613 }
1614 }
1615 dprintf("AVIndex stream %d, chunk %d, offset %llx, dts %lld, size %d, duration %d\n",
1616 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1617 assert(chunk_duration % sc->time_rate == 0);
1618 current_dts += chunk_duration / sc->time_rate;
1619 }
1620 }
1621 /* adjust sample count to avindex entries */
1622 sc->sample_count = st->nb_index_entries;
1623 }
1624
1625 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1626 {
1627 MOVContext *mov = (MOVContext *) s->priv_data;
1628 ByteIOContext *pb = &s->pb;
1629 int i, err;
1630 MOV_atom_t atom = { 0, 0, 0 };
1631
1632 mov->fc = s;
1633 mov->parse_table = mov_default_parse_table;
1634
1635 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1636 atom.size = url_fsize(pb);
1637 else
1638 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1639
1640 /* check MOV header */
1641 err = mov_read_default(mov, pb, atom);
1642 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1643 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1644 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1645 return -1;
1646 }
1647 dprintf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1648
1649 /* some cleanup : make sure we are on the mdat atom */
1650 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1651 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1652
1653 mov->total_streams = s->nb_streams;
1654
1655 for(i=0; i<mov->total_streams; i++) {
1656 MOVStreamContext *sc = mov->streams[i];
1657
1658 if(!sc->time_rate)
1659 sc->time_rate=1;
1660 if(!sc->time_scale)
1661 sc->time_scale= mov->time_scale;
1662 av_set_pts_info(s->streams[i], 64, sc->time_rate, sc->time_scale);
1663
1664 if(s->streams[i]->duration != AV_NOPTS_VALUE){
1665 assert(s->streams[i]->duration % sc->time_rate == 0);
1666 s->streams[i]->duration /= sc->time_rate;
1667 }
1668 sc->ffindex = i;
1669 mov_build_index(mov, s->streams[i]);
1670 }
1671
1672 for(i=0; i<mov->total_streams; i++) {
1673 /* dont need those anymore */
1674 av_freep(&mov->streams[i]->chunk_offsets);
1675 av_freep(&mov->streams[i]->sample_to_chunk);
1676 av_freep(&mov->streams[i]->sample_sizes);
1677 av_freep(&mov->streams[i]->keyframes);
1678 av_freep(&mov->streams[i]->stts_data);
1679 }
1680 av_freep(&mov->mdat_list);
1681 return 0;
1682 }
1683
1684 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1685 {
1686 MOVContext *mov = s->priv_data;
1687 MOVStreamContext *sc = 0;
1688 AVIndexEntry *sample = 0;
1689 int64_t best_dts = INT64_MAX;
1690 int i;
1691
1692 for (i = 0; i < mov->total_streams; i++) {
1693 MOVStreamContext *msc = mov->streams[i];
1694
1695 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1696 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1697 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1698
1699 dprintf("stream %d, sample %ld, dts %lld\n", i, msc->current_sample, dts);
1700 if (dts < best_dts) {
1701 sample = current_sample;
1702 best_dts = dts;
1703 sc = msc;
1704 }
1705 }
1706 }
1707 if (!sample)
1708 return -1;
1709 /* must be done just before reading, to avoid infinite loop on sample */
1710 sc->current_sample++;
1711 if (sample->pos >= url_fsize(&s->pb)) {
1712 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%llx: partial file\n", sc->ffindex, sample->pos);
1713 return -1;
1714 }
1715 url_fseek(&s->pb, sample->pos, SEEK_SET);
1716 av_get_packet(&s->pb, pkt, sample->size);
1717 pkt->stream_index = sc->ffindex;
1718 pkt->dts = sample->timestamp;
1719 if (sc->ctts_data) {
1720 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1721 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1722 /* update ctts context */
1723 sc->sample_to_ctime_sample++;
1724 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1725 sc->sample_to_ctime_index++;
1726 sc->sample_to_ctime_sample = 0;
1727 }
1728 } else {
1729 pkt->pts = pkt->dts;
1730 }
1731 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1732 pkt->pos = sample->pos;
1733 dprintf("stream %d, pts %lld, dts %lld, pos 0x%llx, duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1734 return 0;
1735 }
1736
1737 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1738 {
1739 MOVStreamContext *sc = st->priv_data;
1740 int sample, time_sample;
1741 int i;
1742
1743 sample = av_index_search_timestamp(st, timestamp, flags);
1744 dprintf("stream %d, timestamp %lld, sample %d\n", st->index, timestamp, sample);
1745 if (sample < 0) /* not sure what to do */
1746 return -1;
1747 sc->current_sample = sample;
1748 dprintf("stream %d, found sample %ld\n", st->index, sc->current_sample);
1749 /* adjust ctts index */
1750 if (sc->ctts_data) {
1751 time_sample = 0;
1752 for (i = 0; i < sc->ctts_count; i++) {
1753 time_sample += sc->ctts_data[i].count;
1754 if (time_sample >= sc->current_sample) {
1755 sc->sample_to_ctime_index = i;
1756 sc->sample_to_ctime_sample = time_sample - sc->current_sample;
1757 break;
1758 }
1759 }
1760 }
1761 return sample;
1762 }
1763
1764 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1765 {
1766 AVStream *st;
1767 int64_t seek_timestamp, timestamp;
1768 int sample;
1769 int i;
1770
1771 if (stream_index >= s->nb_streams)
1772 return -1;
1773
1774 st = s->streams[stream_index];
1775 sample = mov_seek_stream(st, sample_time, flags);
1776 if (sample < 0)
1777 return -1;
1778
1779 /* adjust seek timestamp to found sample timestamp */
1780 seek_timestamp = st->index_entries[sample].timestamp;
1781
1782 for (i = 0; i < s->nb_streams; i++) {
1783 st = s->streams[i];
1784 if (stream_index == i || st->discard == AVDISCARD_ALL)
1785 continue;
1786
1787 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1788 mov_seek_stream(st, timestamp, flags);
1789 }
1790 return 0;
1791 }
1792
1793 static int mov_read_close(AVFormatContext *s)
1794 {
1795 int i;
1796 MOVContext *mov = (MOVContext *) s->priv_data;
1797 for(i=0; i<mov->total_streams; i++)
1798 mov_free_stream_context(mov->streams[i]);
1799 /* free color tabs */
1800 for(i=0; i<mov->ctab_size; i++)
1801 av_freep(&mov->ctab[i]);
1802 av_freep(&mov->ctab);
1803 return 0;
1804 }
1805
1806 AVInputFormat mov_demuxer = {
1807 "mov,mp4,m4a,3gp,3g2,mj2",
1808 "QuickTime/MPEG4/Motion JPEG 2000 format",
1809 sizeof(MOVContext),
1810 mov_probe,
1811 mov_read_header,
1812 mov_read_packet,
1813 mov_read_close,
1814 mov_read_seek,
1815 };
ffmpeg with support for matroska ordered chapters