support vdva fourcc (dv + dv audio in mov)
[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., 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 #include "dv.h"
28
29 #ifdef CONFIG_ZLIB
30 #include <zlib.h>
31 #endif
32
33 /*
34 * First version by Francois Revol revol@free.fr
35 * Seek function by Gael Chardon gael.dev@4now.net
36 *
37 * Features and limitations:
38 * - reads most of the QT files I have (at least the structure),
39 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
40 * FIXED, Francois Revol, 07/17/2002
41 * - ffmpeg has nearly none of the usual QuickTime codecs,
42 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
43 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
44 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
45 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
46 * http://mpeg.telecomitalialab.com/faq.htm
47 * - the code is quite ugly... maybe I won't do it recursive next time :-)
48 * - seek is not supported with files that contain edit list
49 *
50 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
51 * when coding this :) (it's a writer anyway)
52 *
53 * Reference documents:
54 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
55 * Apple:
56 * http://developer.apple.com/documentation/QuickTime/QTFF/
57 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
58 * QuickTime is a trademark of Apple (AFAIK :))
59 */
60
61 #include "qtpalette.h"
62
63
64 #undef NDEBUG
65 #include <assert.h>
66
67 static const CodecTag mov_video_tags[] = {
68 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
69 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
70 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
71 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
72 /* Graphics */
73 /* Animation */
74 /* Apple video */
75 /* Kodak Photo CD */
76 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
77 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
78 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
79 { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
80 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
81 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
82 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
83 /* Sorenson video */
84 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
85 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
86 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
87 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
88 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
89 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
90 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
91 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
92 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
93 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
94 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
95 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
96 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
97 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
98 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
99 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
100 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
101 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
102 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
103 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
104 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
105 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 produced by Sony HD camera */
106 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* HDV produced by FCP */
107 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
108 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
109 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
110 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
111 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
112 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
113 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
114 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
115 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
116 { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
117 //{ CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
118 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
119 { CODEC_ID_NONE, 0 },
120 };
121
122 static const CodecTag mov_audio_tags[] = {
123 { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
124 { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
125 { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */
126 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 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_ADPCM_MS, MKTAG('m', 's', 0x00, 0x02) }, /* MS ADPCM */
133 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
134 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
135
136 { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
137 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
138 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
139 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
140 /* MP4 tags */
141 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
142 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
143 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
144 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
145 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
146 { CODEC_ID_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
147 { CODEC_ID_QDM2,MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
148 { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },
149 { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') },
150 { CODEC_ID_NONE, 0 },
151 };
152
153 /* the QuickTime file format is quite convoluted...
154 * it has lots of index tables, each indexing something in another one...
155 * Here we just use what is needed to read the chunks
156 */
157
158 typedef struct MOV_sample_to_chunk_tbl {
159 long first;
160 long count;
161 long id;
162 } MOV_sample_to_chunk_tbl;
163
164 typedef struct {
165 uint32_t type;
166 int64_t offset;
167 int64_t size; /* total size (excluding the size and type fields) */
168 } MOV_atom_t;
169
170 typedef struct {
171 int seed;
172 int flags;
173 int size;
174 void* clrs;
175 } MOV_ctab_t;
176
177 typedef struct MOV_mdat_atom_s {
178 offset_t offset;
179 int64_t size;
180 } MOV_mdat_atom_t;
181
182 typedef struct {
183 uint8_t version;
184 uint32_t flags; // 24bit
185
186 /* 0x03 ESDescrTag */
187 uint16_t es_id;
188 #define MP4ODescrTag 0x01
189 #define MP4IODescrTag 0x02
190 #define MP4ESDescrTag 0x03
191 #define MP4DecConfigDescrTag 0x04
192 #define MP4DecSpecificDescrTag 0x05
193 #define MP4SLConfigDescrTag 0x06
194 #define MP4ContentIdDescrTag 0x07
195 #define MP4SupplContentIdDescrTag 0x08
196 #define MP4IPIPtrDescrTag 0x09
197 #define MP4IPMPPtrDescrTag 0x0A
198 #define MP4IPMPDescrTag 0x0B
199 #define MP4RegistrationDescrTag 0x0D
200 #define MP4ESIDIncDescrTag 0x0E
201 #define MP4ESIDRefDescrTag 0x0F
202 #define MP4FileIODescrTag 0x10
203 #define MP4FileODescrTag 0x11
204 #define MP4ExtProfileLevelDescrTag 0x13
205 #define MP4ExtDescrTagsStart 0x80
206 #define MP4ExtDescrTagsEnd 0xFE
207 uint8_t stream_priority;
208
209 /* 0x04 DecConfigDescrTag */
210 uint8_t object_type_id;
211 uint8_t stream_type;
212 /* XXX: really streamType is
213 * only 6bit, followed by:
214 * 1bit upStream
215 * 1bit reserved
216 */
217 uint32_t buffer_size_db; // 24
218 uint32_t max_bitrate;
219 uint32_t avg_bitrate;
220
221 /* 0x05 DecSpecificDescrTag */
222 uint8_t decoder_cfg_len;
223 uint8_t *decoder_cfg;
224
225 /* 0x06 SLConfigDescrTag */
226 uint8_t sl_config_len;
227 uint8_t *sl_config;
228 } MOV_esds_t;
229
230 struct MOVParseTableEntry;
231
232 typedef struct MOVStreamContext {
233 int ffindex; /* the ffmpeg stream id */
234 long next_chunk;
235 long chunk_count;
236 int64_t *chunk_offsets;
237 int stts_count;
238 Time2Sample *stts_data;
239 int ctts_count;
240 Time2Sample *ctts_data;
241 int edit_count; /* number of 'edit' (elst atom) */
242 long sample_to_chunk_sz;
243 MOV_sample_to_chunk_tbl *sample_to_chunk;
244 int sample_to_ctime_index;
245 int sample_to_ctime_sample;
246 long sample_size;
247 long sample_count;
248 long *sample_sizes;
249 long keyframe_count;
250 long *keyframes;
251 int time_scale;
252 int time_rate;
253 long current_sample;
254 MOV_esds_t esds;
255 AVRational sample_size_v1;
256 int dv_audio_container;
257 } MOVStreamContext;
258
259 typedef struct MOVContext {
260 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) */
261 AVFormatContext *fc;
262 int time_scale;
263 int64_t duration; /* duration of the longest track */
264 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
265 int found_mdat; /* we suppose we have enough data to read the file */
266 int64_t mdat_size;
267 int64_t mdat_offset;
268 int total_streams;
269 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
270 * but we need the info to be able to skip data from those streams in the 'mdat' section
271 */
272 MOVStreamContext *streams[MAX_STREAMS];
273
274 int ctab_size;
275 MOV_ctab_t **ctab; /* color tables */
276 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
277 /* NOTE: for recursion save to/ restore from local variable! */
278
279 AVPaletteControl palette_control;
280 MOV_mdat_atom_t *mdat_list;
281 int mdat_count;
282 DVDemuxContext *dv_demux;
283 AVFormatContext *dv_fctx;
284 } MOVContext;
285
286
287 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
288
289 /* those functions parse an atom */
290 /* return code:
291 1: found what I wanted, exit
292 0: continue to parse next atom
293 -1: error occured, exit
294 */
295 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
296
297 /* links atom IDs to parse functions */
298 typedef struct MOVParseTableEntry {
299 uint32_t type;
300 mov_parse_function func;
301 } MOVParseTableEntry;
302
303 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
304 {
305 if (atom.size>1)
306 url_fskip(pb, atom.size);
307 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
308 return 0;
309 }
310
311 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
312 {
313 int64_t total_size = 0;
314 MOV_atom_t a;
315 int i;
316 int err = 0;
317
318 a.offset = atom.offset;
319
320 if (atom.size < 0)
321 atom.size = 0x7fffffffffffffffLL;
322 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
323 a.size = atom.size;
324 a.type=0L;
325 if(atom.size >= 8) {
326 a.size = get_be32(pb);
327 a.type = get_le32(pb);
328 }
329 total_size += 8;
330 a.offset += 8;
331 dprintf("type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
332 if (a.size == 1) { /* 64 bit extended size */
333 a.size = get_be64(pb) - 8;
334 a.offset += 8;
335 total_size += 8;
336 }
337 if (a.size == 0) {
338 a.size = atom.size - total_size;
339 if (a.size <= 8)
340 break;
341 }
342 for (i = 0; c->parse_table[i].type != 0L
343 && c->parse_table[i].type != a.type; i++)
344 /* empty */;
345
346 a.size -= 8;
347
348 if(a.size < 0)
349 break;
350
351 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
352 url_fskip(pb, a.size);
353 } else {
354 offset_t start_pos = url_ftell(pb);
355 int64_t left;
356 err = (c->parse_table[i].func)(c, pb, a);
357 left = a.size - url_ftell(pb) + start_pos;
358 if (left > 0) /* skip garbage at atom end */
359 url_fskip(pb, left);
360 }
361
362 a.offset += a.size;
363 total_size += a.size;
364 }
365
366 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
367 url_fskip(pb, atom.size - total_size);
368 }
369
370 return err;
371 }
372
373 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
374 {
375 #if 1
376 url_fskip(pb, atom.size); // for now
377 #else
378 VERY VERY BROKEN, NEVER execute this, needs rewrite
379 unsigned int len;
380 MOV_ctab_t *t;
381 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
382 t = c->ctab[c->ctab_size];
383 t->seed = get_be32(pb);
384 t->flags = get_be16(pb);
385 t->size = get_be16(pb) + 1;
386 len = 2 * t->size * 4;
387 if (len > 0) {
388 t->clrs = av_malloc(len); // 16bit A R G B
389 if (t->clrs)
390 get_buffer(pb, t->clrs, len);
391 }
392 #endif
393
394 return 0;
395 }
396
397 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
398 {
399 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
400 int len = 0;
401 uint32_t type;
402 uint32_t ctype;
403
404 get_byte(pb); /* version */
405 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
406
407 /* component type */
408 ctype = get_le32(pb);
409 type = get_le32(pb); /* component subtype */
410
411 dprintf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
412 dprintf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
413 if(ctype == MKTAG('m', 'h', 'l', 'r')) /* MOV */
414 c->mp4 = 0;
415 else if(ctype == 0)
416 c->mp4 = 1;
417 if(type == MKTAG('v', 'i', 'd', 'e'))
418 st->codec->codec_type = CODEC_TYPE_VIDEO;
419 else if(type == MKTAG('s', 'o', 'u', 'n'))
420 st->codec->codec_type = CODEC_TYPE_AUDIO;
421 get_be32(pb); /* component manufacture */
422 get_be32(pb); /* component flags */
423 get_be32(pb); /* component flags mask */
424
425 if(atom.size <= 24)
426 return 0; /* nothing left to read */
427 /* XXX: MP4 uses a C string, not a pascal one */
428 /* component name */
429
430 if(c->mp4) {
431 /* .mp4: C string */
432 while(get_byte(pb) && (++len < (atom.size - 24)));
433 } else {
434 /* .mov: PASCAL string */
435 len = get_byte(pb);
436 url_fskip(pb, len);
437 }
438
439 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
440 return 0;
441 }
442
443 static int mov_mp4_read_descr_len(ByteIOContext *pb)
444 {
445 int len = 0;
446 int count = 4;
447 while (count--) {
448 int c = get_byte(pb);
449 len = (len << 7) | (c & 0x7f);
450 if (!(c & 0x80))
451 break;
452 }
453 return len;
454 }
455
456 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
457 {
458 int len;
459 *tag = get_byte(pb);
460 len = mov_mp4_read_descr_len(pb);
461 dprintf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
462 return len;
463 }
464
465 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
466 {
467 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
468 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
469 int tag, len;
470
471 /* Well, broken but suffisant for some MP4 streams */
472 get_be32(pb); /* version + flags */
473 len = mov_mp4_read_descr(pb, &tag);
474 if (tag == MP4ESDescrTag) {
475 get_be16(pb); /* ID */
476 get_byte(pb); /* priority */
477 } else
478 get_be16(pb); /* ID */
479
480 len = mov_mp4_read_descr(pb, &tag);
481 if (tag == MP4DecConfigDescrTag) {
482 sc->esds.object_type_id = get_byte(pb);
483 sc->esds.stream_type = get_byte(pb);
484 sc->esds.buffer_size_db = get_be24(pb);
485 sc->esds.max_bitrate = get_be32(pb);
486 sc->esds.avg_bitrate = get_be32(pb);
487
488 st->codec->codec_id= codec_get_id(ff_mov_obj_type, sc->esds.object_type_id);
489 dprintf("esds object type id %d\n", sc->esds.object_type_id);
490 len = mov_mp4_read_descr(pb, &tag);
491 if (tag == MP4DecSpecificDescrTag) {
492 dprintf("Specific MPEG4 header len=%d\n", len);
493 st->codec->extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
494 if (st->codec->extradata) {
495 get_buffer(pb, st->codec->extradata, len);
496 st->codec->extradata_size = len;
497 /* from mplayer */
498 if ((*(uint8_t *)st->codec->extradata >> 3) == 29) {
499 st->codec->codec_id = CODEC_ID_MP3ON4;
500 }
501 }
502 }
503 }
504 return 0;
505 }
506
507 /* this atom contains actual media data */
508 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
509 {
510 if(atom.size == 0) /* wrong one (MP4) */
511 return 0;
512 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
513 c->mdat_list[c->mdat_count].offset = atom.offset;
514 c->mdat_list[c->mdat_count].size = atom.size;
515 c->mdat_count++;
516 c->found_mdat=1;
517 c->mdat_offset = atom.offset;
518 c->mdat_size = atom.size;
519 if(c->found_moov)
520 return 1; /* found both, just go */
521 url_fskip(pb, atom.size);
522 return 0; /* now go for moov */
523 }
524
525 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
526 {
527 uint32_t type = get_le32(pb);
528
529 /* from mplayer */
530 switch (type) {
531 case MKTAG('i', 's', 'o', 'm'):
532 case MKTAG('m', 'p', '4', '1'):
533 case MKTAG('m', 'p', '4', '2'):
534 case MKTAG('3', 'g', 'p', '1'):
535 case MKTAG('3', 'g', 'p', '2'):
536 case MKTAG('3', 'g', '2', 'a'):
537 case MKTAG('3', 'g', 'p', '3'):
538 case MKTAG('3', 'g', 'p', '4'):
539 case MKTAG('3', 'g', 'p', '5'):
540 case MKTAG('m', 'm', 'p', '4'): /* Mobile MP4 */
541 case MKTAG('M', '4', 'A', ' '): /* Apple iTunes AAC-LC Audio */
542 case MKTAG('M', '4', 'P', ' '): /* Apple iTunes AAC-LC Protected Audio */
543 case MKTAG('m', 'j', 'p', '2'): /* Motion Jpeg 2000 */
544 c->mp4 = 1;
545 case MKTAG('q', 't', ' ', ' '):
546 default:
547 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
548 }
549 get_be32(pb); /* minor version */
550 url_fskip(pb, atom.size - 8);
551 return 0;
552 }
553
554 /* this atom should contain all header atoms */
555 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
556 {
557 int err;
558
559 err = mov_read_default(c, pb, atom);
560 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
561 /* so we don't parse the whole file if over a network */
562 c->found_moov=1;
563 if(c->found_mdat)
564 return 1; /* found both, just go */
565 return 0; /* now go for mdat */
566 }
567
568
569 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
570 {
571 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
572 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
573 int version = get_byte(pb);
574 int lang;
575
576 if (version > 1)
577 return 1; /* unsupported */
578
579 get_byte(pb); get_byte(pb);
580 get_byte(pb); /* flags */
581
582 if (version == 1) {
583 get_be64(pb);
584 get_be64(pb);
585 } else {
586 get_be32(pb); /* creation time */
587 get_be32(pb); /* modification time */
588 }
589
590 sc->time_scale = get_be32(pb);
591 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
592
593 lang = get_be16(pb); /* language */
594 ff_mov_lang_to_iso639(lang, st->language);
595 get_be16(pb); /* quality */
596
597 return 0;
598 }
599
600 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
601 {
602 int version = get_byte(pb); /* version */
603 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
604
605 if (version == 1) {
606 get_be64(pb);
607 get_be64(pb);
608 } else {
609 get_be32(pb); /* creation time */
610 get_be32(pb); /* modification time */
611 }
612 c->time_scale = get_be32(pb); /* time scale */
613 #ifdef DEBUG
614 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
615 #endif
616 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
617 get_be32(pb); /* preferred scale */
618
619 get_be16(pb); /* preferred volume */
620
621 url_fskip(pb, 10); /* reserved */
622
623 url_fskip(pb, 36); /* display matrix */
624
625 get_be32(pb); /* preview time */
626 get_be32(pb); /* preview duration */
627 get_be32(pb); /* poster time */
628 get_be32(pb); /* selection time */
629 get_be32(pb); /* selection duration */
630 get_be32(pb); /* current time */
631 get_be32(pb); /* next track ID */
632
633 return 0;
634 }
635
636 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
637 {
638 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
639
640 if((uint64_t)atom.size > (1<<30))
641 return -1;
642
643 // currently SVQ3 decoder expect full STSD header - so let's fake it
644 // this should be fixed and just SMI header should be passed
645 av_free(st->codec->extradata);
646 st->codec->extradata_size = 0x5a + atom.size;
647 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
648
649 if (st->codec->extradata) {
650 strcpy(st->codec->extradata, "SVQ3"); // fake
651 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
652 dprintf("Reading SMI %"PRId64" %s\n", atom.size, (char*)st->codec->extradata + 0x5a);
653 } else
654 url_fskip(pb, atom.size);
655
656 return 0;
657 }
658
659 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
660 {
661 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
662 int little_endian = get_be16(pb);
663
664 if (little_endian) {
665 switch (st->codec->codec_id) {
666 case CODEC_ID_PCM_S24BE:
667 st->codec->codec_id = CODEC_ID_PCM_S24LE;
668 break;
669 case CODEC_ID_PCM_S32BE:
670 st->codec->codec_id = CODEC_ID_PCM_S32LE;
671 break;
672 default:
673 break;
674 }
675 }
676 return 0;
677 }
678
679 static int mov_read_alac(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
680 {
681 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
682
683 // currently ALAC decoder expect full atom header - so let's fake it
684 // this should be fixed and just ALAC header should be passed
685
686 av_free(st->codec->extradata);
687 st->codec->extradata_size = 36;
688 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
689
690 if (st->codec->extradata) {
691 strcpy(st->codec->extradata + 4, "alac"); // fake
692 get_buffer(pb, st->codec->extradata + 8, 36 - 8);
693 dprintf("Reading alac %d %s\n", st->codec->extradata_size, (char*)st->codec->extradata);
694 } else
695 url_fskip(pb, atom.size);
696 return 0;
697 }
698
699 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
700 {
701 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
702
703 if((uint64_t)atom.size > (1<<30))
704 return -1;
705
706 if (st->codec->codec_id == CODEC_ID_QDM2) {
707 // pass all frma atom to codec, needed at least for QDM2
708 av_free(st->codec->extradata);
709 st->codec->extradata_size = atom.size;
710 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
711
712 if (st->codec->extradata) {
713 get_buffer(pb, st->codec->extradata, atom.size);
714 } else
715 url_fskip(pb, atom.size);
716 } else if (atom.size > 8) { /* to read frma, esds atoms */
717 mov_read_default(c, pb, atom);
718 } else
719 url_fskip(pb, atom.size);
720 return 0;
721 }
722
723 static int mov_read_jp2h(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
724 {
725 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
726
727 if((uint64_t)atom.size > (1<<30))
728 return -1;
729
730 av_free(st->codec->extradata);
731
732 st->codec->extradata_size = atom.size + 8;
733 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
734
735 /* pass all jp2h atom to codec */
736 if (st->codec->extradata) {
737 strcpy(st->codec->extradata + 4, "jp2h");
738 get_buffer(pb, st->codec->extradata + 8, atom.size);
739 } else
740 url_fskip(pb, atom.size);
741 return 0;
742 }
743
744 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
745 {
746 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
747
748 if((uint64_t)atom.size > (1<<30))
749 return -1;
750
751 av_free(st->codec->extradata);
752
753 st->codec->extradata_size = atom.size;
754 st->codec->extradata = (uint8_t*) av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
755
756 if (st->codec->extradata) {
757 get_buffer(pb, st->codec->extradata, atom.size);
758 } else
759 url_fskip(pb, atom.size);
760
761 return 0;
762 }
763
764 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
765 {
766 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
767 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
768 unsigned int i, entries;
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 if(entries >= UINT_MAX/sizeof(int64_t))
776 return -1;
777
778 sc->chunk_count = entries;
779 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
780 if (!sc->chunk_offsets)
781 return -1;
782 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
783 for(i=0; i<entries; i++) {
784 sc->chunk_offsets[i] = get_be32(pb);
785 }
786 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
787 for(i=0; i<entries; i++) {
788 sc->chunk_offsets[i] = get_be64(pb);
789 }
790 } else
791 return -1;
792
793 return 0;
794 }
795
796 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
797 {
798 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
799 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
800 int entries, frames_per_sample;
801 uint32_t format;
802 uint8_t codec_name[32];
803
804 /* for palette traversal */
805 int color_depth;
806 int color_start;
807 int color_count;
808 int color_end;
809 int color_index;
810 int color_dec;
811 int color_greyscale;
812 unsigned char *color_table;
813 int j;
814 unsigned char r, g, b;
815
816 get_byte(pb); /* version */
817 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
818
819 entries = get_be32(pb);
820
821 while(entries--) { //Parsing Sample description table
822 enum CodecID id;
823 MOV_atom_t a = { 0, 0, 0 };
824 offset_t start_pos = url_ftell(pb);
825 int size = get_be32(pb); /* size */
826 format = get_le32(pb); /* data format */
827
828 get_be32(pb); /* reserved */
829 get_be16(pb); /* reserved */
830 get_be16(pb); /* index */
831
832 if (st->codec->codec_tag) {
833 /* multiple fourcc, just skip for now */
834 url_fskip(pb, size - (url_ftell(pb) - start_pos));
835 continue;
836 }
837
838 st->codec->codec_tag = format;
839 id = codec_get_id(mov_audio_tags, format);
840 if (id > 0) {
841 st->codec->codec_type = CODEC_TYPE_AUDIO;
842 } else if (format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
843 id = codec_get_id(mov_video_tags, format);
844 if (id <= 0)
845 id = codec_get_id(codec_bmp_tags, format);
846 if (id > 0)
847 st->codec->codec_type = CODEC_TYPE_VIDEO;
848 }
849
850 dprintf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
851 size,
852 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
853 st->codec->codec_type);
854
855 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
856 st->codec->codec_id = id;
857 get_be16(pb); /* version */
858 get_be16(pb); /* revision level */
859 get_be32(pb); /* vendor */
860 get_be32(pb); /* temporal quality */
861 get_be32(pb); /* spacial quality */
862
863 st->codec->width = get_be16(pb); /* width */
864 st->codec->height = get_be16(pb); /* height */
865
866 get_be32(pb); /* horiz resolution */
867 get_be32(pb); /* vert resolution */
868 get_be32(pb); /* data size, always 0 */
869 frames_per_sample = get_be16(pb); /* frames per samples */
870 #ifdef DEBUG
871 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
872 #endif
873 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
874 if (codec_name[0] <= 31) {
875 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
876 st->codec->codec_name[codec_name[0]] = 0;
877 }
878
879 st->codec->bits_per_sample = get_be16(pb); /* depth */
880 st->codec->color_table_id = get_be16(pb); /* colortable id */
881
882 /* figure out the palette situation */
883 color_depth = st->codec->bits_per_sample & 0x1F;
884 color_greyscale = st->codec->bits_per_sample & 0x20;
885
886 /* if the depth is 2, 4, or 8 bpp, file is palettized */
887 if ((color_depth == 2) || (color_depth == 4) ||
888 (color_depth == 8)) {
889
890 if (color_greyscale) {
891
892 /* compute the greyscale palette */
893 color_count = 1 << color_depth;
894 color_index = 255;
895 color_dec = 256 / (color_count - 1);
896 for (j = 0; j < color_count; j++) {
897 r = g = b = color_index;
898 c->palette_control.palette[j] =
899 (r << 16) | (g << 8) | (b);
900 color_index -= color_dec;
901 if (color_index < 0)
902 color_index = 0;
903 }
904
905 } else if (st->codec->color_table_id & 0x08) {
906
907 /* if flag bit 3 is set, use the default palette */
908 color_count = 1 << color_depth;
909 if (color_depth == 2)
910 color_table = ff_qt_default_palette_4;
911 else if (color_depth == 4)
912 color_table = ff_qt_default_palette_16;
913 else
914 color_table = ff_qt_default_palette_256;
915
916 for (j = 0; j < color_count; j++) {
917 r = color_table[j * 4 + 0];
918 g = color_table[j * 4 + 1];
919 b = color_table[j * 4 + 2];
920 c->palette_control.palette[j] =
921 (r << 16) | (g << 8) | (b);
922 }
923
924 } else {
925
926 /* load the palette from the file */
927 color_start = get_be32(pb);
928 color_count = get_be16(pb);
929 color_end = get_be16(pb);
930 for (j = color_start; j <= color_end; j++) {
931 /* each R, G, or B component is 16 bits;
932 * only use the top 8 bits; skip alpha bytes
933 * up front */
934 get_byte(pb);
935 get_byte(pb);
936 r = get_byte(pb);
937 get_byte(pb);
938 g = get_byte(pb);
939 get_byte(pb);
940 b = get_byte(pb);
941 get_byte(pb);
942 c->palette_control.palette[j] =
943 (r << 16) | (g << 8) | (b);
944 }
945 }
946
947 st->codec->palctrl = &c->palette_control;
948 st->codec->palctrl->palette_changed = 1;
949 } else
950 st->codec->palctrl = NULL;
951 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
952 int bits_per_sample;
953 uint16_t version = get_be16(pb);
954
955 st->codec->codec_id = id;
956 get_be16(pb); /* revision level */
957 get_be32(pb); /* vendor */
958
959 st->codec->channels = get_be16(pb); /* channel count */
960 dprintf("audio channels %d\n", st->codec->channels);
961 st->codec->bits_per_sample = get_be16(pb); /* sample size */
962 /* do we need to force to 16 for AMR ? */
963
964 /* handle specific s8 codec */
965 get_be16(pb); /* compression id = 0*/
966 get_be16(pb); /* packet size = 0 */
967
968 st->codec->sample_rate = ((get_be32(pb) >> 16));
969
970 switch (st->codec->codec_id) {
971 case CODEC_ID_PCM_S8:
972 case CODEC_ID_PCM_U8:
973 if (st->codec->bits_per_sample == 16)
974 st->codec->codec_id = CODEC_ID_PCM_S16BE;
975 break;
976 case CODEC_ID_PCM_S16LE:
977 case CODEC_ID_PCM_S16BE:
978 if (st->codec->bits_per_sample == 8)
979 st->codec->codec_id = CODEC_ID_PCM_S8;
980 break;
981 case CODEC_ID_AMR_WB:
982 st->codec->sample_rate = 16000; /* should really we ? */
983 st->codec->channels=1; /* really needed */
984 break;
985 case CODEC_ID_AMR_NB:
986 st->codec->sample_rate = 8000; /* should really we ? */
987 st->codec->channels=1; /* really needed */
988 break;
989 default:
990 break;
991 }
992
993 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
994 if (bits_per_sample) {
995 st->codec->bits_per_sample = bits_per_sample;
996 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
997 }
998
999 //Read QT version 1 fields. In version 0 theese dont exist
1000 dprintf("version =%d mp4=%d\n",version,c->mp4);
1001 if(version==1) {
1002 sc->sample_size_v1.den = get_be32(pb); /* samples per packet */
1003 get_be32(pb); /* bytes per packet */
1004 sc->sample_size_v1.num = get_be32(pb); /* bytes per frame */
1005 get_be32(pb); /* bytes per sample */
1006 } else if(version==2) {
1007 get_be32(pb); /* sizeof struct only */
1008 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1009 st->codec->channels = get_be32(pb);
1010 get_be32(pb); /* always 0x7F000000 */
1011 get_be32(pb); /* bits per channel if sound is uncompressed */
1012 get_be32(pb); /* lcpm format specific flag */
1013 get_be32(pb); /* bytes per audio packet if constant */
1014 get_be32(pb); /* lpcm frames per audio packet if constant */
1015 }
1016 } else {
1017 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1018 url_fskip(pb, size - (url_ftell(pb) - start_pos));
1019 }
1020 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1021 a.size = size - (url_ftell(pb) - start_pos);
1022 if (a.size > 8)
1023 mov_read_default(c, pb, a);
1024 else if (a.size > 0)
1025 url_fskip(pb, a.size);
1026 }
1027
1028 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
1029 st->codec->sample_rate= sc->time_scale;
1030 }
1031
1032 switch (st->codec->codec_id) {
1033 #ifdef CONFIG_FAAD
1034 case CODEC_ID_AAC:
1035 #endif
1036 #ifdef CONFIG_VORBIS_DECODER
1037 case CODEC_ID_VORBIS:
1038 #endif
1039 case CODEC_ID_MP3ON4:
1040 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1041 break;
1042 case CODEC_ID_DVAUDIO:
1043 c->dv_fctx = av_alloc_format_context();
1044 c->dv_demux = dv_init_demux(c->dv_fctx);
1045 if (!c->dv_demux) {
1046 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1047 return -1;
1048 }
1049 sc->dv_audio_container = 1;
1050 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1051 break;
1052 default:
1053 break;
1054 }
1055
1056 return 0;
1057 }
1058
1059 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1060 {
1061 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1062 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1063 unsigned int i, entries;
1064
1065 get_byte(pb); /* version */
1066 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1067
1068 entries = get_be32(pb);
1069
1070 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1071 return -1;
1072
1073 #ifdef DEBUG
1074 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1075 #endif
1076 sc->sample_to_chunk_sz = entries;
1077 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1078 if (!sc->sample_to_chunk)
1079 return -1;
1080 for(i=0; i<entries; i++) {
1081 sc->sample_to_chunk[i].first = get_be32(pb);
1082 sc->sample_to_chunk[i].count = get_be32(pb);
1083 sc->sample_to_chunk[i].id = get_be32(pb);
1084 }
1085 return 0;
1086 }
1087
1088 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1089 {
1090 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1091 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1092 unsigned int i, entries;
1093
1094 get_byte(pb); /* version */
1095 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1096
1097 entries = get_be32(pb);
1098
1099 if(entries >= UINT_MAX / sizeof(long))
1100 return -1;
1101
1102 sc->keyframe_count = entries;
1103 #ifdef DEBUG
1104 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1105 #endif
1106 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1107 if (!sc->keyframes)
1108 return -1;
1109 for(i=0; i<entries; i++) {
1110 sc->keyframes[i] = get_be32(pb);
1111 #ifdef DEBUG
1112 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1113 #endif
1114 }
1115 return 0;
1116 }
1117
1118 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1119 {
1120 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1121 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1122 unsigned int i, entries, sample_size;
1123
1124 get_byte(pb); /* version */
1125 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1126
1127 sample_size = get_be32(pb);
1128 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1129 sc->sample_size = sample_size;
1130 entries = get_be32(pb);
1131 if(entries >= UINT_MAX / sizeof(long))
1132 return -1;
1133
1134 sc->sample_count = entries;
1135 if (sample_size)
1136 return 0;
1137
1138 #ifdef DEBUG
1139 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1140 #endif
1141 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1142 if (!sc->sample_sizes)
1143 return -1;
1144 for(i=0; i<entries; i++) {
1145 sc->sample_sizes[i] = get_be32(pb);
1146 #ifdef DEBUG
1147 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1148 #endif
1149 }
1150 return 0;
1151 }
1152
1153 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1154 {
1155 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1156 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1157 unsigned int i, entries;
1158 int64_t duration=0;
1159 int64_t total_sample_count=0;
1160
1161 get_byte(pb); /* version */
1162 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1163 entries = get_be32(pb);
1164 if(entries >= UINT_MAX / sizeof(Time2Sample))
1165 return -1;
1166
1167 sc->stts_count = entries;
1168 sc->stts_data = av_malloc(entries * sizeof(Time2Sample));
1169
1170 #ifdef DEBUG
1171 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1172 #endif
1173
1174 sc->time_rate=0;
1175
1176 for(i=0; i<entries; i++) {
1177 int sample_duration;
1178 int sample_count;
1179
1180 sample_count=get_be32(pb);
1181 sample_duration = get_be32(pb);
1182 sc->stts_data[i].count= sample_count;
1183 sc->stts_data[i].duration= sample_duration;
1184
1185 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1186
1187 dprintf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1188
1189 duration+=(int64_t)sample_duration*sample_count;
1190 total_sample_count+=sample_count;
1191 }
1192
1193 st->nb_frames= total_sample_count;
1194 if(duration)
1195 st->duration= duration;
1196 return 0;
1197 }
1198
1199 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1200 {
1201 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1202 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1203 unsigned int i, entries;
1204
1205 get_byte(pb); /* version */
1206 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1207 entries = get_be32(pb);
1208 if(entries >= UINT_MAX / sizeof(Time2Sample))
1209 return -1;
1210
1211 sc->ctts_count = entries;
1212 sc->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1213
1214 dprintf("track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1215
1216 for(i=0; i<entries; i++) {
1217 int count =get_be32(pb);
1218 int duration =get_be32(pb);
1219
1220 if (duration < 0) {
1221 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1222 sc->ctts_count = 0;
1223 url_fskip(pb, 8 * (entries - i - 1));
1224 break;
1225 }
1226 sc->ctts_data[i].count = count;
1227 sc->ctts_data[i].duration= duration;
1228
1229 sc->time_rate= ff_gcd(sc->time_rate, duration);
1230 }
1231 return 0;
1232 }
1233
1234 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1235 {
1236 AVStream *st;
1237 MOVStreamContext *sc;
1238
1239 st = av_new_stream(c->fc, c->fc->nb_streams);
1240 if (!st) return -2;
1241 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1242 if (!sc) {
1243 av_free(st);
1244 return -1;
1245 }
1246
1247 st->priv_data = sc;
1248 st->codec->codec_type = CODEC_TYPE_DATA;
1249 st->start_time = 0; /* XXX: check */
1250 c->streams[c->fc->nb_streams-1] = sc;
1251
1252 return mov_read_default(c, pb, atom);
1253 }
1254
1255 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1256 {
1257 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1258 int version = get_byte(pb);
1259
1260 get_byte(pb); get_byte(pb);
1261 get_byte(pb); /* flags */
1262 /*
1263 MOV_TRACK_ENABLED 0x0001
1264 MOV_TRACK_IN_MOVIE 0x0002
1265 MOV_TRACK_IN_PREVIEW 0x0004
1266 MOV_TRACK_IN_POSTER 0x0008
1267 */
1268
1269 if (version == 1) {
1270 get_be64(pb);
1271 get_be64(pb);
1272 } else {
1273 get_be32(pb); /* creation time */
1274 get_be32(pb); /* modification time */
1275 }
1276 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1277 get_be32(pb); /* reserved */
1278 st->start_time = 0; /* check */
1279 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1280 get_be32(pb); /* reserved */
1281 get_be32(pb); /* reserved */
1282
1283 get_be16(pb); /* layer */
1284 get_be16(pb); /* alternate group */
1285 get_be16(pb); /* volume */
1286 get_be16(pb); /* reserved */
1287
1288 url_fskip(pb, 36); /* display matrix */
1289
1290 /* those are fixed-point */
1291 get_be32(pb); /* track width */
1292 get_be32(pb); /* track height */
1293
1294 return 0;
1295 }
1296
1297 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1298 /* like the files created with Adobe Premiere 5.0, for samples see */
1299 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1300 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1301 {
1302 int err;
1303
1304 if (atom.size < 8)
1305 return 0; /* continue */
1306 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1307 url_fskip(pb, atom.size - 4);
1308 return 0;
1309 }
1310 atom.type = get_le32(pb);
1311 atom.offset += 8;
1312 atom.size -= 8;
1313 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1314 url_fskip(pb, atom.size);
1315 return 0;
1316 }
1317 err = mov_read_mdat(c, pb, atom);
1318 return err;
1319 }
1320
1321
1322 #ifdef CONFIG_ZLIB
1323 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1324 {
1325 return -1;
1326 }
1327
1328 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1329 {
1330 ByteIOContext ctx;
1331 uint8_t *cmov_data;
1332 uint8_t *moov_data; /* uncompressed data */
1333 long cmov_len, moov_len;
1334 int ret;
1335
1336 get_be32(pb); /* dcom atom */
1337 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1338 return -1;
1339 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1340 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1341 return -1;
1342 }
1343 get_be32(pb); /* cmvd atom */
1344 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1345 return -1;
1346 moov_len = get_be32(pb); /* uncompressed size */
1347 cmov_len = atom.size - 6 * 4;
1348
1349 cmov_data = (uint8_t *) av_malloc(cmov_len);
1350 if (!cmov_data)
1351 return -1;
1352 moov_data = (uint8_t *) av_malloc(moov_len);
1353 if (!moov_data) {
1354 av_free(cmov_data);
1355 return -1;
1356 }
1357 get_buffer(pb, cmov_data, cmov_len);
1358 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1359 return -1;
1360 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1361 return -1;
1362 ctx.buf_end = ctx.buffer + moov_len;
1363 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1364 atom.offset = 0;
1365 atom.size = moov_len;
1366 #ifdef DEBUG
1367 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1368 #endif
1369 ret = mov_read_default(c, &ctx, atom);
1370 av_free(moov_data);
1371 av_free(cmov_data);
1372
1373 return ret;
1374 }
1375 #endif
1376
1377 /* edit list atom */
1378 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1379 {
1380 int i, edit_count;
1381
1382 get_byte(pb); /* version */
1383 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1384 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1385
1386 for(i=0; i<edit_count; i++){
1387 get_be32(pb); /* Track duration */
1388 get_be32(pb); /* Media time */
1389 get_be32(pb); /* Media rate */
1390 }
1391 dprintf("track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1392 return 0;
1393 }
1394
1395 static const MOVParseTableEntry mov_default_parse_table[] = {
1396 /* mp4 atoms */
1397 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1398 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1399 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1400 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1401 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1402 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1403 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1404 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1405 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1406 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1407 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1408 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1409 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1410 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1411 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1412 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1413 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_jp2h },
1414 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1415 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1416 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1417 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1418 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1419 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1420 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1421 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1422 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1423 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1424 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1425 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1426 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1427 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1428 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1429 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1430 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_alac }, /* alac specific atom */
1431 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1432 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1433 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1434 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1435 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1436 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1437 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1438 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1439 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1440 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1441 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1442 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1443 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1444 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1445 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1446 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1447 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
1448 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1449 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1450 /* extra mp4 */
1451 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1452 /* QT atoms */
1453 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1454 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1455 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1456 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1457 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1458 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1459 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1460 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1461 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1462 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1463 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1464 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1465 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1466 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1467 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1468 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1469 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1470 #ifdef CONFIG_ZLIB
1471 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1472 #else
1473 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1474 #endif
1475 { 0L, mov_read_leaf }
1476 };
1477
1478 static void mov_free_stream_context(MOVStreamContext *sc)
1479 {
1480 if(sc) {
1481 av_freep(&sc->ctts_data);
1482 av_freep(&sc);
1483 }
1484 }
1485
1486 /* XXX: is it sufficient ? */
1487 static int mov_probe(AVProbeData *p)
1488 {
1489 unsigned int offset;
1490 uint32_t tag;
1491 int score = 0;
1492
1493 /* check file header */
1494 if (p->buf_size <= 12)
1495 return 0;
1496 offset = 0;
1497 for(;;) {
1498 /* ignore invalid offset */
1499 if ((offset + 8) > (unsigned int)p->buf_size)
1500 return score;
1501 tag = LE_32(p->buf + offset + 4);
1502 switch(tag) {
1503 /* check for obvious tags */
1504 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1505 case MKTAG( 'm', 'o', 'o', 'v' ):
1506 case MKTAG( 'm', 'd', 'a', 't' ):
1507 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1508 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1509 return AVPROBE_SCORE_MAX;
1510 /* those are more common words, so rate then a bit less */
1511 case MKTAG( 'w', 'i', 'd', 'e' ):
1512 case MKTAG( 'f', 'r', 'e', 'e' ):
1513 case MKTAG( 'j', 'u', 'n', 'k' ):
1514 case MKTAG( 'p', 'i', 'c', 't' ):
1515 return AVPROBE_SCORE_MAX - 5;
1516 case MKTAG( 'f', 't', 'y', 'p' ):
1517 case MKTAG( 's', 'k', 'i', 'p' ):
1518 case MKTAG( 'u', 'u', 'i', 'd' ):
1519 offset = BE_32(p->buf+offset) + offset;
1520 /* if we only find those cause probedata is too small at least rate them */
1521 score = AVPROBE_SCORE_MAX - 50;
1522 break;
1523 default:
1524 /* unrecognized tag */
1525 return score;
1526 }
1527 }
1528 return score;
1529 }
1530
1531 static void mov_build_index(MOVContext *mov, AVStream *st)
1532 {
1533 MOVStreamContext *sc = st->priv_data;
1534 offset_t current_offset;
1535 int64_t current_dts = 0;
1536 int stts_index = 0;
1537 int stsc_index = 0;
1538 int stss_index = 0;
1539 int i, j, k;
1540
1541 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1542 int keyframe, sample_size;
1543 int current_sample = 0;
1544 int stts_sample = 0;
1545 int distance = 0;
1546
1547 st->nb_frames = sc->sample_count;
1548 for (i = 0; i < sc->chunk_count; i++) {
1549 current_offset = sc->chunk_offsets[i];
1550 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1551 stsc_index++;
1552 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1553 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1554 if (keyframe) {
1555 distance = 0;
1556 if (stss_index + 1 < sc->keyframe_count)
1557 stss_index++;
1558 }
1559 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1560 dprintf("AVIndex stream %d, sample %d, offset %llx, dts %lld, size %d, distance %d, keyframe %d\n",
1561 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1562 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1563 current_offset += sample_size;
1564 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1565 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1566 distance++;
1567 stts_sample++;
1568 if (current_sample + 1 < sc->sample_count)
1569 current_sample++;
1570 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1571 stts_sample = 0;
1572 stts_index++;
1573 }
1574 }
1575 }
1576 } else { /* read whole chunk */
1577 int chunk_samples, chunk_size, chunk_duration;
1578
1579 for (i = 0; i < sc->chunk_count; i++) {
1580 current_offset = sc->chunk_offsets[i];
1581 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1582 stsc_index++;
1583 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1584 /* get chunk size */
1585 if (sc->sample_size > 1 || st->codec->bits_per_sample == 8)
1586 chunk_size = chunk_samples * sc->sample_size;
1587 else if (sc->sample_size_v1.den > 0 && (chunk_samples * sc->sample_size_v1.num % sc->sample_size_v1.den == 0))
1588 chunk_size = chunk_samples * sc->sample_size_v1.num / sc->sample_size_v1.den;
1589 else { /* workaround to find nearest next chunk offset */
1590 chunk_size = INT_MAX;
1591 for (j = 0; j < mov->total_streams; j++) {
1592 MOVStreamContext *msc = mov->streams[j];
1593
1594 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1595 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1596 chunk_size = msc->chunk_offsets[k] - current_offset;
1597 msc->next_chunk = k;
1598 break;
1599 }
1600 }
1601 }
1602 /* check for last chunk */
1603 if (chunk_size == INT_MAX)
1604 for (j = 0; j < mov->mdat_count; j++) {
1605 dprintf("mdat %d, offset %llx, size %lld, current offset %llx\n",
1606 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1607 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1608 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1609 }
1610 assert(chunk_size != INT_MAX);
1611 for (j = 0; j < mov->total_streams; j++) {
1612 mov->streams[j]->next_chunk = 0;
1613 }
1614 }
1615 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1616 /* get chunk duration */
1617 chunk_duration = 0;
1618 while (chunk_samples > 0) {
1619 if (chunk_samples < sc->stts_data[stts_index].count) {
1620 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1621 sc->stts_data[stts_index].count -= chunk_samples;
1622 break;
1623 } else {
1624 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1625 chunk_samples -= sc->stts_data[stts_index].count;
1626 if (stts_index + 1 < sc->stts_count) {
1627 stts_index++;
1628 }
1629 }
1630 }
1631 dprintf("AVIndex stream %d, chunk %d, offset %llx, dts %lld, size %d, duration %d\n",
1632 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1633 assert(chunk_duration % sc->time_rate == 0);
1634 current_dts += chunk_duration / sc->time_rate;
1635 }
1636 }
1637 /* adjust sample count to avindex entries */
1638 sc->sample_count = st->nb_index_entries;
1639 }
1640
1641 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1642 {
1643 MOVContext *mov = (MOVContext *) s->priv_data;
1644 ByteIOContext *pb = &s->pb;
1645 int i, err;
1646 MOV_atom_t atom = { 0, 0, 0 };
1647
1648 mov->fc = s;
1649 mov->parse_table = mov_default_parse_table;
1650
1651 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1652 atom.size = url_fsize(pb);
1653 else
1654 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1655
1656 /* check MOV header */
1657 err = mov_read_default(mov, pb, atom);
1658 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1659 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1660 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1661 return -1;
1662 }
1663 dprintf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1664
1665 /* some cleanup : make sure we are on the mdat atom */
1666 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1667 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1668
1669 mov->total_streams = s->nb_streams;
1670
1671 for(i=0; i<mov->total_streams; i++) {
1672 MOVStreamContext *sc = mov->streams[i];
1673
1674 if(!sc->time_rate)
1675 sc->time_rate=1;
1676 if(!sc->time_scale)
1677 sc->time_scale= mov->time_scale;
1678 av_set_pts_info(s->streams[i], 64, sc->time_rate, sc->time_scale);
1679
1680 if(s->streams[i]->duration != AV_NOPTS_VALUE){
1681 assert(s->streams[i]->duration % sc->time_rate == 0);
1682 s->streams[i]->duration /= sc->time_rate;
1683 }
1684 sc->ffindex = i;
1685 mov_build_index(mov, s->streams[i]);
1686 }
1687
1688 for(i=0; i<mov->total_streams; i++) {
1689 /* dont need those anymore */
1690 av_freep(&mov->streams[i]->chunk_offsets);
1691 av_freep(&mov->streams[i]->sample_to_chunk);
1692 av_freep(&mov->streams[i]->sample_sizes);
1693 av_freep(&mov->streams[i]->keyframes);
1694 av_freep(&mov->streams[i]->stts_data);
1695 }
1696 av_freep(&mov->mdat_list);
1697 return 0;
1698 }
1699
1700 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1701 {
1702 MOVContext *mov = s->priv_data;
1703 MOVStreamContext *sc = 0;
1704 AVIndexEntry *sample = 0;
1705 int64_t best_dts = INT64_MAX;
1706 int i;
1707
1708 for (i = 0; i < mov->total_streams; i++) {
1709 MOVStreamContext *msc = mov->streams[i];
1710
1711 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1712 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1713 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1714
1715 dprintf("stream %d, sample %ld, dts %lld\n", i, msc->current_sample, dts);
1716 if (dts < best_dts) {
1717 sample = current_sample;
1718 best_dts = dts;
1719 sc = msc;
1720 }
1721 }
1722 }
1723 if (!sample)
1724 return -1;
1725 /* must be done just before reading, to avoid infinite loop on sample */
1726 sc->current_sample++;
1727 if (sample->pos >= url_fsize(&s->pb)) {
1728 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%llx: partial file\n", sc->ffindex, sample->pos);
1729 return -1;
1730 }
1731
1732 if (sc->dv_audio_container) {
1733 dv_get_packet(mov->dv_demux, pkt);
1734 dprintf("dv audio pkt size %d\n", pkt->size);
1735 } else {
1736 url_fseek(&s->pb, sample->pos, SEEK_SET);
1737 av_get_packet(&s->pb, pkt, sample->size);
1738 if (mov->dv_demux) {
1739 void *pkt_destruct_func = pkt->destruct;
1740 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1741 pkt->destruct = pkt_destruct_func;
1742 }
1743 }
1744 pkt->stream_index = sc->ffindex;
1745 pkt->dts = sample->timestamp;
1746 if (sc->ctts_data) {
1747 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1748 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1749 /* update ctts context */
1750 sc->sample_to_ctime_sample++;
1751 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1752 sc->sample_to_ctime_index++;
1753 sc->sample_to_ctime_sample = 0;
1754 }
1755 } else {
1756 pkt->pts = pkt->dts;
1757 }
1758 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1759 pkt->pos = sample->pos;
1760 dprintf("stream %d, pts %lld, dts %lld, pos 0x%llx, duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1761 return 0;
1762 }
1763
1764 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1765 {
1766 MOVStreamContext *sc = st->priv_data;
1767 int sample, time_sample;
1768 int i;
1769
1770 sample = av_index_search_timestamp(st, timestamp, flags);
1771 dprintf("stream %d, timestamp %lld, sample %d\n", st->index, timestamp, sample);
1772 if (sample < 0) /* not sure what to do */
1773 return -1;
1774 sc->current_sample = sample;
1775 dprintf("stream %d, found sample %ld\n", st->index, sc->current_sample);
1776 /* adjust ctts index */
1777 if (sc->ctts_data) {
1778 time_sample = 0;
1779 for (i = 0; i < sc->ctts_count; i++) {
1780 time_sample += sc->ctts_data[i].count;
1781 if (time_sample >= sc->current_sample) {
1782 sc->sample_to_ctime_index = i;
1783 sc->sample_to_ctime_sample = time_sample - sc->current_sample;
1784 break;
1785 }
1786 }
1787 }
1788 return sample;
1789 }
1790
1791 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1792 {
1793 AVStream *st;
1794 int64_t seek_timestamp, timestamp;
1795 int sample;
1796 int i;
1797
1798 if (stream_index >= s->nb_streams)
1799 return -1;
1800
1801 st = s->streams[stream_index];
1802 sample = mov_seek_stream(st, sample_time, flags);
1803 if (sample < 0)
1804 return -1;
1805
1806 /* adjust seek timestamp to found sample timestamp */
1807 seek_timestamp = st->index_entries[sample].timestamp;
1808
1809 for (i = 0; i < s->nb_streams; i++) {
1810 st = s->streams[i];
1811 if (stream_index == i || st->discard == AVDISCARD_ALL)
1812 continue;
1813
1814 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1815 mov_seek_stream(st, timestamp, flags);
1816 }
1817 return 0;
1818 }
1819
1820 static int mov_read_close(AVFormatContext *s)
1821 {
1822 int i;
1823 MOVContext *mov = (MOVContext *) s->priv_data;
1824 for(i=0; i<mov->total_streams; i++)
1825 mov_free_stream_context(mov->streams[i]);
1826 /* free color tabs */
1827 for(i=0; i<mov->ctab_size; i++)
1828 av_freep(&mov->ctab[i]);
1829 if(mov->dv_demux){
1830 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1831 av_freep(&mov->dv_fctx->streams[i]->codec);
1832 av_freep(&mov->dv_fctx->streams[i]);
1833 }
1834 av_freep(&mov->dv_fctx);
1835 av_freep(&mov->dv_demux);
1836 }
1837 av_freep(&mov->ctab);
1838 return 0;
1839 }
1840
1841 AVInputFormat mov_demuxer = {
1842 "mov,mp4,m4a,3gp,3g2,mj2",
1843 "QuickTime/MPEG4/Motion JPEG 2000 format",
1844 sizeof(MOVContext),
1845 mov_probe,
1846 mov_read_header,
1847 mov_read_packet,
1848 mov_read_close,
1849 mov_read_seek,
1850 };