7cbfbbc8b05cf77fe7a0f7ba5309d43974b0efa7
[libav.git] / libavformat / mov.c
1 /*
2 * MOV decoder.
3 * Copyright (c) 2001 Fabrice Bellard.
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <limits.h>
23
24 //#define DEBUG
25
26 #include "avformat.h"
27 #include "riff.h"
28 #include "isom.h"
29 #include "dv.h"
30
31 #ifdef CONFIG_ZLIB
32 #include <zlib.h>
33 #endif
34
35 /*
36 * First version by Francois Revol revol@free.fr
37 * Seek function by Gael Chardon gael.dev@4now.net
38 *
39 * Features and limitations:
40 * - reads most of the QT files I have (at least the structure),
41 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
42 * FIXED, Francois Revol, 07/17/2002
43 * - ffmpeg has nearly none of the usual QuickTime codecs,
44 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
45 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
46 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
47 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
48 * http://mpeg.telecomitalialab.com/faq.htm
49 * - the code is quite ugly... maybe I won't do it recursive next time :-)
50 * - seek is not supported with files that contain edit list
51 *
52 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
53 * when coding this :) (it's a writer anyway)
54 *
55 * Reference documents:
56 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
57 * Apple:
58 * http://developer.apple.com/documentation/QuickTime/QTFF/
59 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
60 * QuickTime is a trademark of Apple (AFAIK :))
61 */
62
63 #include "qtpalette.h"
64
65
66 #undef NDEBUG
67 #include <assert.h>
68
69 static const CodecTag mov_video_tags[] = {
70 /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
71 /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
72 /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
73 /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
74 /* Graphics */
75 /* Animation */
76 /* Apple video */
77 /* Kodak Photo CD */
78 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
79 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
80 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
81 { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
82 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
83 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
84 /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
85 /* Sorenson video */
86 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
87 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
88 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
89 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
90 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
91 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
92 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
93 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
94 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
95 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
96 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
97 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
98 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
99 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
100 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
101 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
102 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
103 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
104 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
105 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
106 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
107 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 produced by Sony HD camera */
108 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* HDV produced by FCP */
109 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
110 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
111 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
112 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
113 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
114 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
115 //{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
116 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
117 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
118 { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
119 //{ CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
120 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */
121 { CODEC_ID_TIFF, MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */
122 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
123 { CODEC_ID_NONE, 0 },
124 };
125
126 static const CodecTag mov_audio_tags[] = {
127 { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
128 { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
129 { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */
130 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
131 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
132 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
133 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
134 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
135 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
136 { CODEC_ID_ADPCM_MS, MKTAG('m', 's', 0x00, 0x02) }, /* MS ADPCM */
137 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
138 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
139
140 { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
141 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
142 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
143 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
144 /* MP4 tags */
145 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
146 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
147 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
148 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
149 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
150 { CODEC_ID_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
151 { CODEC_ID_QDM2,MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
152 { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },
153 { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') },
154 { CODEC_ID_PCM_S16LE, MKTAG('l', 'p', 'c', 'm') },
155 { CODEC_ID_NONE, 0 },
156 };
157
158 /* the QuickTime file format is quite convoluted...
159 * it has lots of index tables, each indexing something in another one...
160 * Here we just use what is needed to read the chunks
161 */
162
163 typedef struct MOV_sample_to_chunk_tbl {
164 long first;
165 long count;
166 long id;
167 } MOV_sample_to_chunk_tbl;
168
169 typedef struct {
170 uint32_t type;
171 int64_t offset;
172 int64_t size; /* total size (excluding the size and type fields) */
173 } MOV_atom_t;
174
175 typedef struct {
176 int seed;
177 int flags;
178 int size;
179 void* clrs;
180 } MOV_ctab_t;
181
182 typedef struct MOV_mdat_atom_s {
183 offset_t offset;
184 int64_t size;
185 } MOV_mdat_atom_t;
186
187 typedef struct {
188 uint8_t version;
189 uint32_t flags; // 24bit
190
191 /* 0x03 ESDescrTag */
192 uint16_t es_id;
193 #define MP4ODescrTag 0x01
194 #define MP4IODescrTag 0x02
195 #define MP4ESDescrTag 0x03
196 #define MP4DecConfigDescrTag 0x04
197 #define MP4DecSpecificDescrTag 0x05
198 #define MP4SLConfigDescrTag 0x06
199 #define MP4ContentIdDescrTag 0x07
200 #define MP4SupplContentIdDescrTag 0x08
201 #define MP4IPIPtrDescrTag 0x09
202 #define MP4IPMPPtrDescrTag 0x0A
203 #define MP4IPMPDescrTag 0x0B
204 #define MP4RegistrationDescrTag 0x0D
205 #define MP4ESIDIncDescrTag 0x0E
206 #define MP4ESIDRefDescrTag 0x0F
207 #define MP4FileIODescrTag 0x10
208 #define MP4FileODescrTag 0x11
209 #define MP4ExtProfileLevelDescrTag 0x13
210 #define MP4ExtDescrTagsStart 0x80
211 #define MP4ExtDescrTagsEnd 0xFE
212 uint8_t stream_priority;
213
214 /* 0x04 DecConfigDescrTag */
215 uint8_t object_type_id;
216 uint8_t stream_type;
217 /* XXX: really streamType is
218 * only 6bit, followed by:
219 * 1bit upStream
220 * 1bit reserved
221 */
222 uint32_t buffer_size_db; // 24
223 uint32_t max_bitrate;
224 uint32_t avg_bitrate;
225
226 /* 0x05 DecSpecificDescrTag */
227 uint8_t decoder_cfg_len;
228 uint8_t *decoder_cfg;
229
230 /* 0x06 SLConfigDescrTag */
231 uint8_t sl_config_len;
232 uint8_t *sl_config;
233 } MOV_esds_t;
234
235 struct MOVParseTableEntry;
236
237 typedef struct MOVStreamContext {
238 int ffindex; /* the ffmpeg stream id */
239 long next_chunk;
240 long chunk_count;
241 int64_t *chunk_offsets;
242 int stts_count;
243 Time2Sample *stts_data;
244 int ctts_count;
245 Time2Sample *ctts_data;
246 int edit_count; /* number of 'edit' (elst atom) */
247 long sample_to_chunk_sz;
248 MOV_sample_to_chunk_tbl *sample_to_chunk;
249 int sample_to_ctime_index;
250 int sample_to_ctime_sample;
251 long sample_size;
252 long sample_count;
253 long *sample_sizes;
254 long keyframe_count;
255 long *keyframes;
256 int time_scale;
257 int time_rate;
258 long current_sample;
259 MOV_esds_t esds;
260 AVRational sample_size_v1;
261 int dv_audio_container;
262 } MOVStreamContext;
263
264 typedef struct MOVContext {
265 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) */
266 AVFormatContext *fc;
267 int time_scale;
268 int64_t duration; /* duration of the longest track */
269 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
270 int found_mdat; /* we suppose we have enough data to read the file */
271 int64_t mdat_size;
272 int64_t mdat_offset;
273 int total_streams;
274 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
275 * but we need the info to be able to skip data from those streams in the 'mdat' section
276 */
277 MOVStreamContext *streams[MAX_STREAMS];
278
279 int ctab_size;
280 MOV_ctab_t **ctab; /* color tables */
281 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
282 /* NOTE: for recursion save to/ restore from local variable! */
283
284 AVPaletteControl palette_control;
285 MOV_mdat_atom_t *mdat_list;
286 int mdat_count;
287 DVDemuxContext *dv_demux;
288 AVFormatContext *dv_fctx;
289 } MOVContext;
290
291
292 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
293
294 /* those functions parse an atom */
295 /* return code:
296 1: found what I wanted, exit
297 0: continue to parse next atom
298 -1: error occured, exit
299 */
300 typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
301
302 /* links atom IDs to parse functions */
303 typedef struct MOVParseTableEntry {
304 uint32_t type;
305 mov_parse_function func;
306 } MOVParseTableEntry;
307
308 static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
309 {
310 if (atom.size>1)
311 url_fskip(pb, atom.size);
312 /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
313 return 0;
314 }
315
316 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317 {
318 int64_t total_size = 0;
319 MOV_atom_t a;
320 int i;
321 int err = 0;
322
323 a.offset = atom.offset;
324
325 if (atom.size < 0)
326 atom.size = 0x7fffffffffffffffLL;
327 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
328 a.size = atom.size;
329 a.type=0L;
330 if(atom.size >= 8) {
331 a.size = get_be32(pb);
332 a.type = get_le32(pb);
333 }
334 total_size += 8;
335 a.offset += 8;
336 dprintf("type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
337 if (a.size == 1) { /* 64 bit extended size */
338 a.size = get_be64(pb) - 8;
339 a.offset += 8;
340 total_size += 8;
341 }
342 if (a.size == 0) {
343 a.size = atom.size - total_size;
344 if (a.size <= 8)
345 break;
346 }
347 for (i = 0; c->parse_table[i].type != 0L
348 && c->parse_table[i].type != a.type; i++)
349 /* empty */;
350
351 a.size -= 8;
352
353 if(a.size < 0)
354 break;
355
356 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
357 url_fskip(pb, a.size);
358 } else {
359 offset_t start_pos = url_ftell(pb);
360 int64_t left;
361 err = (c->parse_table[i].func)(c, pb, a);
362 left = a.size - url_ftell(pb) + start_pos;
363 if (left > 0) /* skip garbage at atom end */
364 url_fskip(pb, left);
365 }
366
367 a.offset += a.size;
368 total_size += a.size;
369 }
370
371 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
372 url_fskip(pb, atom.size - total_size);
373 }
374
375 return err;
376 }
377
378 static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
379 {
380 #if 1
381 url_fskip(pb, atom.size); // for now
382 #else
383 VERY VERY BROKEN, NEVER execute this, needs rewrite
384 unsigned int len;
385 MOV_ctab_t *t;
386 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
387 t = c->ctab[c->ctab_size];
388 t->seed = get_be32(pb);
389 t->flags = get_be16(pb);
390 t->size = get_be16(pb) + 1;
391 len = 2 * t->size * 4;
392 if (len > 0) {
393 t->clrs = av_malloc(len); // 16bit A R G B
394 if (t->clrs)
395 get_buffer(pb, t->clrs, len);
396 }
397 #endif
398
399 return 0;
400 }
401
402 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
403 {
404 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
405 int len = 0;
406 uint32_t type;
407 uint32_t ctype;
408
409 get_byte(pb); /* version */
410 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
411
412 /* component type */
413 ctype = get_le32(pb);
414 type = get_le32(pb); /* component subtype */
415
416 dprintf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
417 dprintf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
418 if(ctype == MKTAG('m', 'h', 'l', 'r')) /* MOV */
419 c->mp4 = 0;
420 else if(ctype == 0)
421 c->mp4 = 1;
422 if(type == MKTAG('v', 'i', 'd', 'e'))
423 st->codec->codec_type = CODEC_TYPE_VIDEO;
424 else if(type == MKTAG('s', 'o', 'u', 'n'))
425 st->codec->codec_type = CODEC_TYPE_AUDIO;
426 get_be32(pb); /* component manufacture */
427 get_be32(pb); /* component flags */
428 get_be32(pb); /* component flags mask */
429
430 if(atom.size <= 24)
431 return 0; /* nothing left to read */
432 /* XXX: MP4 uses a C string, not a pascal one */
433 /* component name */
434
435 if(c->mp4) {
436 /* .mp4: C string */
437 while(get_byte(pb) && (++len < (atom.size - 24)));
438 } else {
439 /* .mov: PASCAL string */
440 len = get_byte(pb);
441 url_fskip(pb, len);
442 }
443
444 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
445 return 0;
446 }
447
448 static int mov_mp4_read_descr_len(ByteIOContext *pb)
449 {
450 int len = 0;
451 int count = 4;
452 while (count--) {
453 int c = get_byte(pb);
454 len = (len << 7) | (c & 0x7f);
455 if (!(c & 0x80))
456 break;
457 }
458 return len;
459 }
460
461 static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
462 {
463 int len;
464 *tag = get_byte(pb);
465 len = mov_mp4_read_descr_len(pb);
466 dprintf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
467 return len;
468 }
469
470 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
471 {
472 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
473 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
474 int tag, len;
475
476 /* Well, broken but suffisant for some MP4 streams */
477 get_be32(pb); /* version + flags */
478 len = mov_mp4_read_descr(pb, &tag);
479 if (tag == MP4ESDescrTag) {
480 get_be16(pb); /* ID */
481 get_byte(pb); /* priority */
482 } else
483 get_be16(pb); /* ID */
484
485 len = mov_mp4_read_descr(pb, &tag);
486 if (tag == MP4DecConfigDescrTag) {
487 sc->esds.object_type_id = get_byte(pb);
488 sc->esds.stream_type = get_byte(pb);
489 sc->esds.buffer_size_db = get_be24(pb);
490 sc->esds.max_bitrate = get_be32(pb);
491 sc->esds.avg_bitrate = get_be32(pb);
492
493 st->codec->codec_id= codec_get_id(ff_mov_obj_type, sc->esds.object_type_id);
494 dprintf("esds object type id %d\n", sc->esds.object_type_id);
495 len = mov_mp4_read_descr(pb, &tag);
496 if (tag == MP4DecSpecificDescrTag) {
497 dprintf("Specific MPEG4 header len=%d\n", len);
498 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
499 if (st->codec->extradata) {
500 get_buffer(pb, st->codec->extradata, len);
501 st->codec->extradata_size = len;
502 /* from mplayer */
503 if ((*st->codec->extradata >> 3) == 29) {
504 st->codec->codec_id = CODEC_ID_MP3ON4;
505 }
506 }
507 }
508 }
509 return 0;
510 }
511
512 /* this atom contains actual media data */
513 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
514 {
515 if(atom.size == 0) /* wrong one (MP4) */
516 return 0;
517 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
518 c->mdat_list[c->mdat_count].offset = atom.offset;
519 c->mdat_list[c->mdat_count].size = atom.size;
520 c->mdat_count++;
521 c->found_mdat=1;
522 c->mdat_offset = atom.offset;
523 c->mdat_size = atom.size;
524 if(c->found_moov)
525 return 1; /* found both, just go */
526 url_fskip(pb, atom.size);
527 return 0; /* now go for moov */
528 }
529
530 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
531 {
532 uint32_t type = get_le32(pb);
533
534 /* from mplayer */
535 switch (type) {
536 case MKTAG('i', 's', 'o', 'm'):
537 case MKTAG('m', 'p', '4', '1'):
538 case MKTAG('m', 'p', '4', '2'):
539 case MKTAG('3', 'g', 'p', '1'):
540 case MKTAG('3', 'g', 'p', '2'):
541 case MKTAG('3', 'g', '2', 'a'):
542 case MKTAG('3', 'g', 'p', '3'):
543 case MKTAG('3', 'g', 'p', '4'):
544 case MKTAG('3', 'g', 'p', '5'):
545 case MKTAG('m', 'm', 'p', '4'): /* Mobile MP4 */
546 case MKTAG('M', '4', 'A', ' '): /* Apple iTunes AAC-LC Audio */
547 case MKTAG('M', '4', 'P', ' '): /* Apple iTunes AAC-LC Protected Audio */
548 case MKTAG('m', 'j', 'p', '2'): /* Motion Jpeg 2000 */
549 c->mp4 = 1;
550 case MKTAG('q', 't', ' ', ' '):
551 default:
552 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
553 }
554 get_be32(pb); /* minor version */
555 url_fskip(pb, atom.size - 8);
556 return 0;
557 }
558
559 /* this atom should contain all header atoms */
560 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
561 {
562 int err;
563
564 err = mov_read_default(c, pb, atom);
565 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
566 /* so we don't parse the whole file if over a network */
567 c->found_moov=1;
568 if(c->found_mdat)
569 return 1; /* found both, just go */
570 return 0; /* now go for mdat */
571 }
572
573
574 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
575 {
576 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
577 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
578 int version = get_byte(pb);
579 int lang;
580
581 if (version > 1)
582 return 1; /* unsupported */
583
584 get_byte(pb); get_byte(pb);
585 get_byte(pb); /* flags */
586
587 if (version == 1) {
588 get_be64(pb);
589 get_be64(pb);
590 } else {
591 get_be32(pb); /* creation time */
592 get_be32(pb); /* modification time */
593 }
594
595 sc->time_scale = get_be32(pb);
596 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
597
598 lang = get_be16(pb); /* language */
599 ff_mov_lang_to_iso639(lang, st->language);
600 get_be16(pb); /* quality */
601
602 return 0;
603 }
604
605 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
606 {
607 int version = get_byte(pb); /* version */
608 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
609
610 if (version == 1) {
611 get_be64(pb);
612 get_be64(pb);
613 } else {
614 get_be32(pb); /* creation time */
615 get_be32(pb); /* modification time */
616 }
617 c->time_scale = get_be32(pb); /* time scale */
618 #ifdef DEBUG
619 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
620 #endif
621 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
622 get_be32(pb); /* preferred scale */
623
624 get_be16(pb); /* preferred volume */
625
626 url_fskip(pb, 10); /* reserved */
627
628 url_fskip(pb, 36); /* display matrix */
629
630 get_be32(pb); /* preview time */
631 get_be32(pb); /* preview duration */
632 get_be32(pb); /* poster time */
633 get_be32(pb); /* selection time */
634 get_be32(pb); /* selection duration */
635 get_be32(pb); /* current time */
636 get_be32(pb); /* next track ID */
637
638 return 0;
639 }
640
641 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
642 {
643 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
644
645 if((uint64_t)atom.size > (1<<30))
646 return -1;
647
648 // currently SVQ3 decoder expect full STSD header - so let's fake it
649 // this should be fixed and just SMI header should be passed
650 av_free(st->codec->extradata);
651 st->codec->extradata_size = 0x5a + atom.size;
652 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
653
654 if (st->codec->extradata) {
655 strcpy(st->codec->extradata, "SVQ3"); // fake
656 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
657 dprintf("Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
658 } else
659 url_fskip(pb, atom.size);
660
661 return 0;
662 }
663
664 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
665 {
666 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
667 int little_endian = get_be16(pb);
668
669 if (little_endian) {
670 switch (st->codec->codec_id) {
671 case CODEC_ID_PCM_S24BE:
672 st->codec->codec_id = CODEC_ID_PCM_S24LE;
673 break;
674 case CODEC_ID_PCM_S32BE:
675 st->codec->codec_id = CODEC_ID_PCM_S32LE;
676 break;
677 default:
678 break;
679 }
680 }
681 return 0;
682 }
683
684 static int mov_read_alac(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
685 {
686 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
687
688 // currently ALAC decoder expect full atom header - so let's fake it
689 // this should be fixed and just ALAC header should be passed
690
691 av_free(st->codec->extradata);
692 st->codec->extradata_size = 36;
693 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
694
695 if (st->codec->extradata) {
696 strcpy(st->codec->extradata + 4, "alac"); // fake
697 get_buffer(pb, st->codec->extradata + 8, 36 - 8);
698 dprintf("Reading alac %d %s\n", st->codec->extradata_size, st->codec->extradata);
699 } else
700 url_fskip(pb, atom.size);
701 return 0;
702 }
703
704 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
705 {
706 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
707
708 if((uint64_t)atom.size > (1<<30))
709 return -1;
710
711 if (st->codec->codec_id == CODEC_ID_QDM2) {
712 // pass all frma atom to codec, needed at least for QDM2
713 av_free(st->codec->extradata);
714 st->codec->extradata_size = atom.size;
715 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
716
717 if (st->codec->extradata) {
718 get_buffer(pb, st->codec->extradata, atom.size);
719 } else
720 url_fskip(pb, atom.size);
721 } else if (atom.size > 8) { /* to read frma, esds atoms */
722 mov_read_default(c, pb, atom);
723 } else
724 url_fskip(pb, atom.size);
725 return 0;
726 }
727
728 static int mov_read_jp2h(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
729 {
730 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
731
732 if((uint64_t)atom.size > (1<<30))
733 return -1;
734
735 av_free(st->codec->extradata);
736
737 st->codec->extradata_size = atom.size + 8;
738 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
739
740 /* pass all jp2h atom to codec */
741 if (st->codec->extradata) {
742 strcpy(st->codec->extradata + 4, "jp2h");
743 get_buffer(pb, st->codec->extradata + 8, atom.size);
744 } else
745 url_fskip(pb, atom.size);
746 return 0;
747 }
748
749 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
750 {
751 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
752
753 if((uint64_t)atom.size > (1<<30))
754 return -1;
755
756 av_free(st->codec->extradata);
757
758 st->codec->extradata_size = atom.size;
759 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
760
761 if (st->codec->extradata) {
762 get_buffer(pb, st->codec->extradata, atom.size);
763 } else
764 url_fskip(pb, atom.size);
765
766 return 0;
767 }
768
769 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
770 {
771 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
772 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
773 unsigned int i, entries;
774
775 get_byte(pb); /* version */
776 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
777
778 entries = get_be32(pb);
779
780 if(entries >= UINT_MAX/sizeof(int64_t))
781 return -1;
782
783 sc->chunk_count = entries;
784 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
785 if (!sc->chunk_offsets)
786 return -1;
787 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
788 for(i=0; i<entries; i++) {
789 sc->chunk_offsets[i] = get_be32(pb);
790 }
791 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
792 for(i=0; i<entries; i++) {
793 sc->chunk_offsets[i] = get_be64(pb);
794 }
795 } else
796 return -1;
797
798 return 0;
799 }
800
801 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
802 {
803 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
804 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
805 int entries, frames_per_sample;
806 uint32_t format;
807 uint8_t codec_name[32];
808
809 /* for palette traversal */
810 int color_depth;
811 int color_start;
812 int color_count;
813 int color_end;
814 int color_index;
815 int color_dec;
816 int color_greyscale;
817 unsigned char *color_table;
818 int j;
819 unsigned char r, g, b;
820
821 get_byte(pb); /* version */
822 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
823
824 entries = get_be32(pb);
825
826 while(entries--) { //Parsing Sample description table
827 enum CodecID id;
828 MOV_atom_t a = { 0, 0, 0 };
829 offset_t start_pos = url_ftell(pb);
830 int size = get_be32(pb); /* size */
831 format = get_le32(pb); /* data format */
832
833 get_be32(pb); /* reserved */
834 get_be16(pb); /* reserved */
835 get_be16(pb); /* index */
836
837 if (st->codec->codec_tag) {
838 /* multiple fourcc, just skip for now */
839 url_fskip(pb, size - (url_ftell(pb) - start_pos));
840 continue;
841 }
842
843 st->codec->codec_tag = format;
844 id = codec_get_id(mov_audio_tags, format);
845 if (id > 0) {
846 st->codec->codec_type = CODEC_TYPE_AUDIO;
847 } else if (format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
848 id = codec_get_id(mov_video_tags, format);
849 if (id <= 0)
850 id = codec_get_id(codec_bmp_tags, format);
851 if (id > 0)
852 st->codec->codec_type = CODEC_TYPE_VIDEO;
853 }
854
855 dprintf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
856 size,
857 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
858 st->codec->codec_type);
859
860 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
861 st->codec->codec_id = id;
862 get_be16(pb); /* version */
863 get_be16(pb); /* revision level */
864 get_be32(pb); /* vendor */
865 get_be32(pb); /* temporal quality */
866 get_be32(pb); /* spacial quality */
867
868 st->codec->width = get_be16(pb); /* width */
869 st->codec->height = get_be16(pb); /* height */
870
871 get_be32(pb); /* horiz resolution */
872 get_be32(pb); /* vert resolution */
873 get_be32(pb); /* data size, always 0 */
874 frames_per_sample = get_be16(pb); /* frames per samples */
875 #ifdef DEBUG
876 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
877 #endif
878 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
879 if (codec_name[0] <= 31) {
880 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
881 st->codec->codec_name[codec_name[0]] = 0;
882 }
883
884 st->codec->bits_per_sample = get_be16(pb); /* depth */
885 st->codec->color_table_id = get_be16(pb); /* colortable id */
886
887 /* figure out the palette situation */
888 color_depth = st->codec->bits_per_sample & 0x1F;
889 color_greyscale = st->codec->bits_per_sample & 0x20;
890
891 /* if the depth is 2, 4, or 8 bpp, file is palettized */
892 if ((color_depth == 2) || (color_depth == 4) ||
893 (color_depth == 8)) {
894
895 if (color_greyscale) {
896
897 /* compute the greyscale palette */
898 color_count = 1 << color_depth;
899 color_index = 255;
900 color_dec = 256 / (color_count - 1);
901 for (j = 0; j < color_count; j++) {
902 r = g = b = color_index;
903 c->palette_control.palette[j] =
904 (r << 16) | (g << 8) | (b);
905 color_index -= color_dec;
906 if (color_index < 0)
907 color_index = 0;
908 }
909
910 } else if (st->codec->color_table_id & 0x08) {
911
912 /* if flag bit 3 is set, use the default palette */
913 color_count = 1 << color_depth;
914 if (color_depth == 2)
915 color_table = ff_qt_default_palette_4;
916 else if (color_depth == 4)
917 color_table = ff_qt_default_palette_16;
918 else
919 color_table = ff_qt_default_palette_256;
920
921 for (j = 0; j < color_count; j++) {
922 r = color_table[j * 4 + 0];
923 g = color_table[j * 4 + 1];
924 b = color_table[j * 4 + 2];
925 c->palette_control.palette[j] =
926 (r << 16) | (g << 8) | (b);
927 }
928
929 } else {
930
931 /* load the palette from the file */
932 color_start = get_be32(pb);
933 color_count = get_be16(pb);
934 color_end = get_be16(pb);
935 for (j = color_start; j <= color_end; j++) {
936 /* each R, G, or B component is 16 bits;
937 * only use the top 8 bits; skip alpha bytes
938 * up front */
939 get_byte(pb);
940 get_byte(pb);
941 r = get_byte(pb);
942 get_byte(pb);
943 g = get_byte(pb);
944 get_byte(pb);
945 b = get_byte(pb);
946 get_byte(pb);
947 c->palette_control.palette[j] =
948 (r << 16) | (g << 8) | (b);
949 }
950 }
951
952 st->codec->palctrl = &c->palette_control;
953 st->codec->palctrl->palette_changed = 1;
954 } else
955 st->codec->palctrl = NULL;
956 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
957 int bits_per_sample;
958 uint16_t version = get_be16(pb);
959
960 st->codec->codec_id = id;
961 get_be16(pb); /* revision level */
962 get_be32(pb); /* vendor */
963
964 st->codec->channels = get_be16(pb); /* channel count */
965 dprintf("audio channels %d\n", st->codec->channels);
966 st->codec->bits_per_sample = get_be16(pb); /* sample size */
967 /* do we need to force to 16 for AMR ? */
968
969 /* handle specific s8 codec */
970 get_be16(pb); /* compression id = 0*/
971 get_be16(pb); /* packet size = 0 */
972
973 st->codec->sample_rate = ((get_be32(pb) >> 16));
974
975 switch (st->codec->codec_id) {
976 case CODEC_ID_PCM_S8:
977 case CODEC_ID_PCM_U8:
978 if (st->codec->bits_per_sample == 16)
979 st->codec->codec_id = CODEC_ID_PCM_S16BE;
980 break;
981 case CODEC_ID_PCM_S16LE:
982 case CODEC_ID_PCM_S16BE:
983 if (st->codec->bits_per_sample == 8)
984 st->codec->codec_id = CODEC_ID_PCM_S8;
985 else if (st->codec->bits_per_sample == 24)
986 st->codec->codec_id = CODEC_ID_PCM_S24BE;
987 break;
988 default:
989 break;
990 }
991
992 //Read QT version 1 fields. In version 0 theese dont exist
993 dprintf("version =%d mp4=%d\n",version,c->mp4);
994 if(version==1) {
995 sc->sample_size_v1.den = get_be32(pb); /* samples per packet */
996 get_be32(pb); /* bytes per packet */
997 sc->sample_size_v1.num = get_be32(pb); /* bytes per frame */
998 get_be32(pb); /* bytes per sample */
999 } else if(version==2) {
1000 get_be32(pb); /* sizeof struct only */
1001 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1002 st->codec->channels = get_be32(pb);
1003 get_be32(pb); /* always 0x7F000000 */
1004 get_be32(pb); /* bits per channel if sound is uncompressed */
1005 get_be32(pb); /* lcpm format specific flag */
1006 get_be32(pb); /* bytes per audio packet if constant */
1007 get_be32(pb); /* lpcm frames per audio packet if constant */
1008 }
1009
1010 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1011 if (bits_per_sample) {
1012 st->codec->bits_per_sample = bits_per_sample;
1013 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1014 }
1015 } else {
1016 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1017 url_fskip(pb, size - (url_ftell(pb) - start_pos));
1018 }
1019 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1020 a.size = size - (url_ftell(pb) - start_pos);
1021 if (a.size > 8)
1022 mov_read_default(c, pb, a);
1023 else if (a.size > 0)
1024 url_fskip(pb, a.size);
1025 }
1026
1027 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
1028 st->codec->sample_rate= sc->time_scale;
1029 }
1030
1031 /* special codec parameters handling */
1032 switch (st->codec->codec_id) {
1033 #ifdef CONFIG_H261_DECODER
1034 case CODEC_ID_H261:
1035 #endif
1036 #ifdef CONFIG_H263_DECODER
1037 case CODEC_ID_H263:
1038 #endif
1039 #ifdef CONFIG_MPEG4_DECODER
1040 case CODEC_ID_MPEG4:
1041 #endif
1042 st->codec->width= 0; /* let decoder init width/height */
1043 st->codec->height= 0;
1044 break;
1045 #ifdef CONFIG_FAAD
1046 case CODEC_ID_AAC:
1047 #endif
1048 #ifdef CONFIG_VORBIS_DECODER
1049 case CODEC_ID_VORBIS:
1050 #endif
1051 case CODEC_ID_MP3ON4:
1052 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1053 break;
1054 #ifdef CONFIG_DV_DEMUXER
1055 case CODEC_ID_DVAUDIO:
1056 c->dv_fctx = av_alloc_format_context();
1057 c->dv_demux = dv_init_demux(c->dv_fctx);
1058 if (!c->dv_demux) {
1059 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1060 return -1;
1061 }
1062 sc->dv_audio_container = 1;
1063 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1064 break;
1065 #endif
1066 /* no ifdef since parameters are always those */
1067 case CODEC_ID_AMR_WB:
1068 st->codec->sample_rate= 16000;
1069 st->codec->channels= 1; /* really needed */
1070 break;
1071 case CODEC_ID_AMR_NB:
1072 st->codec->sample_rate= 8000;
1073 st->codec->channels= 1; /* really needed */
1074 break;
1075 case CODEC_ID_MP2:
1076 st->need_parsing = 1;
1077 break;
1078 default:
1079 break;
1080 }
1081
1082 return 0;
1083 }
1084
1085 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1086 {
1087 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1088 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1089 unsigned int i, entries;
1090
1091 get_byte(pb); /* version */
1092 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1093
1094 entries = get_be32(pb);
1095
1096 if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1097 return -1;
1098
1099 #ifdef DEBUG
1100 av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1101 #endif
1102 sc->sample_to_chunk_sz = entries;
1103 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1104 if (!sc->sample_to_chunk)
1105 return -1;
1106 for(i=0; i<entries; i++) {
1107 sc->sample_to_chunk[i].first = get_be32(pb);
1108 sc->sample_to_chunk[i].count = get_be32(pb);
1109 sc->sample_to_chunk[i].id = get_be32(pb);
1110 }
1111 return 0;
1112 }
1113
1114 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1115 {
1116 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1117 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1118 unsigned int i, entries;
1119
1120 get_byte(pb); /* version */
1121 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1122
1123 entries = get_be32(pb);
1124
1125 if(entries >= UINT_MAX / sizeof(long))
1126 return -1;
1127
1128 sc->keyframe_count = entries;
1129 #ifdef DEBUG
1130 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1131 #endif
1132 sc->keyframes = av_malloc(entries * sizeof(long));
1133 if (!sc->keyframes)
1134 return -1;
1135 for(i=0; i<entries; i++) {
1136 sc->keyframes[i] = get_be32(pb);
1137 #ifdef DEBUG
1138 /* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1139 #endif
1140 }
1141 return 0;
1142 }
1143
1144 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1145 {
1146 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1147 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1148 unsigned int i, entries, sample_size;
1149
1150 get_byte(pb); /* version */
1151 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1152
1153 sample_size = get_be32(pb);
1154 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1155 sc->sample_size = sample_size;
1156 entries = get_be32(pb);
1157 if(entries >= UINT_MAX / sizeof(long))
1158 return -1;
1159
1160 sc->sample_count = entries;
1161 if (sample_size)
1162 return 0;
1163
1164 #ifdef DEBUG
1165 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1166 #endif
1167 sc->sample_sizes = av_malloc(entries * sizeof(long));
1168 if (!sc->sample_sizes)
1169 return -1;
1170 for(i=0; i<entries; i++) {
1171 sc->sample_sizes[i] = get_be32(pb);
1172 #ifdef DEBUG
1173 av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1174 #endif
1175 }
1176 return 0;
1177 }
1178
1179 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1180 {
1181 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1182 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1183 unsigned int i, entries;
1184 int64_t duration=0;
1185 int64_t total_sample_count=0;
1186
1187 get_byte(pb); /* version */
1188 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1189 entries = get_be32(pb);
1190 if(entries >= UINT_MAX / sizeof(Time2Sample))
1191 return -1;
1192
1193 sc->stts_count = entries;
1194 sc->stts_data = av_malloc(entries * sizeof(Time2Sample));
1195
1196 #ifdef DEBUG
1197 av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1198 #endif
1199
1200 sc->time_rate=0;
1201
1202 for(i=0; i<entries; i++) {
1203 int sample_duration;
1204 int sample_count;
1205
1206 sample_count=get_be32(pb);
1207 sample_duration = get_be32(pb);
1208 sc->stts_data[i].count= sample_count;
1209 sc->stts_data[i].duration= sample_duration;
1210
1211 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1212
1213 dprintf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1214
1215 duration+=(int64_t)sample_duration*sample_count;
1216 total_sample_count+=sample_count;
1217 }
1218
1219 st->nb_frames= total_sample_count;
1220 if(duration)
1221 st->duration= duration;
1222 return 0;
1223 }
1224
1225 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1226 {
1227 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1228 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1229 unsigned int i, entries;
1230
1231 get_byte(pb); /* version */
1232 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1233 entries = get_be32(pb);
1234 if(entries >= UINT_MAX / sizeof(Time2Sample))
1235 return -1;
1236
1237 sc->ctts_count = entries;
1238 sc->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1239
1240 dprintf("track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1241
1242 for(i=0; i<entries; i++) {
1243 int count =get_be32(pb);
1244 int duration =get_be32(pb);
1245
1246 if (duration < 0) {
1247 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1248 sc->ctts_count = 0;
1249 url_fskip(pb, 8 * (entries - i - 1));
1250 break;
1251 }
1252 sc->ctts_data[i].count = count;
1253 sc->ctts_data[i].duration= duration;
1254
1255 sc->time_rate= ff_gcd(sc->time_rate, duration);
1256 }
1257 return 0;
1258 }
1259
1260 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1261 {
1262 AVStream *st;
1263 MOVStreamContext *sc;
1264
1265 st = av_new_stream(c->fc, c->fc->nb_streams);
1266 if (!st) return -2;
1267 sc = av_mallocz(sizeof(MOVStreamContext));
1268 if (!sc) {
1269 av_free(st);
1270 return -1;
1271 }
1272
1273 st->priv_data = sc;
1274 st->codec->codec_type = CODEC_TYPE_DATA;
1275 st->start_time = 0; /* XXX: check */
1276 c->streams[c->fc->nb_streams-1] = sc;
1277
1278 return mov_read_default(c, pb, atom);
1279 }
1280
1281 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1282 {
1283 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1284 int version = get_byte(pb);
1285
1286 get_byte(pb); get_byte(pb);
1287 get_byte(pb); /* flags */
1288 /*
1289 MOV_TRACK_ENABLED 0x0001
1290 MOV_TRACK_IN_MOVIE 0x0002
1291 MOV_TRACK_IN_PREVIEW 0x0004
1292 MOV_TRACK_IN_POSTER 0x0008
1293 */
1294
1295 if (version == 1) {
1296 get_be64(pb);
1297 get_be64(pb);
1298 } else {
1299 get_be32(pb); /* creation time */
1300 get_be32(pb); /* modification time */
1301 }
1302 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1303 get_be32(pb); /* reserved */
1304 st->start_time = 0; /* check */
1305 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1306 get_be32(pb); /* reserved */
1307 get_be32(pb); /* reserved */
1308
1309 get_be16(pb); /* layer */
1310 get_be16(pb); /* alternate group */
1311 get_be16(pb); /* volume */
1312 get_be16(pb); /* reserved */
1313
1314 url_fskip(pb, 36); /* display matrix */
1315
1316 /* those are fixed-point */
1317 get_be32(pb); /* track width */
1318 get_be32(pb); /* track height */
1319
1320 return 0;
1321 }
1322
1323 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1324 /* like the files created with Adobe Premiere 5.0, for samples see */
1325 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1326 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1327 {
1328 int err;
1329
1330 if (atom.size < 8)
1331 return 0; /* continue */
1332 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1333 url_fskip(pb, atom.size - 4);
1334 return 0;
1335 }
1336 atom.type = get_le32(pb);
1337 atom.offset += 8;
1338 atom.size -= 8;
1339 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1340 url_fskip(pb, atom.size);
1341 return 0;
1342 }
1343 err = mov_read_mdat(c, pb, atom);
1344 return err;
1345 }
1346
1347
1348 #ifdef CONFIG_ZLIB
1349 static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1350 {
1351 return -1;
1352 }
1353
1354 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1355 {
1356 ByteIOContext ctx;
1357 uint8_t *cmov_data;
1358 uint8_t *moov_data; /* uncompressed data */
1359 long cmov_len, moov_len;
1360 int ret;
1361
1362 get_be32(pb); /* dcom atom */
1363 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1364 return -1;
1365 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1366 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1367 return -1;
1368 }
1369 get_be32(pb); /* cmvd atom */
1370 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1371 return -1;
1372 moov_len = get_be32(pb); /* uncompressed size */
1373 cmov_len = atom.size - 6 * 4;
1374
1375 cmov_data = av_malloc(cmov_len);
1376 if (!cmov_data)
1377 return -1;
1378 moov_data = av_malloc(moov_len);
1379 if (!moov_data) {
1380 av_free(cmov_data);
1381 return -1;
1382 }
1383 get_buffer(pb, cmov_data, cmov_len);
1384 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1385 return -1;
1386 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1387 return -1;
1388 ctx.buf_end = ctx.buffer + moov_len;
1389 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1390 atom.offset = 0;
1391 atom.size = moov_len;
1392 #ifdef DEBUG
1393 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1394 #endif
1395 ret = mov_read_default(c, &ctx, atom);
1396 av_free(moov_data);
1397 av_free(cmov_data);
1398
1399 return ret;
1400 }
1401 #endif
1402
1403 /* edit list atom */
1404 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1405 {
1406 int i, edit_count;
1407
1408 get_byte(pb); /* version */
1409 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1410 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1411
1412 for(i=0; i<edit_count; i++){
1413 get_be32(pb); /* Track duration */
1414 get_be32(pb); /* Media time */
1415 get_be32(pb); /* Media rate */
1416 }
1417 dprintf("track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1418 return 0;
1419 }
1420
1421 static const MOVParseTableEntry mov_default_parse_table[] = {
1422 /* mp4 atoms */
1423 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1424 { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1425 { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1426 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1427 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1428 { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1429 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1430 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1431 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1432 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1433 { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1434 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1435 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1436 { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1437 { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1438 { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1439 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_jp2h },
1440 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1441 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1442 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1443 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1444 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1445 { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1446 { MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1447 { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1448 { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1449 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1450 { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1451 { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1452 { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1453 { MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1454 { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1455 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1456 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_alac }, /* alac specific atom */
1457 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1458 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1459 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1460 { MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1461 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1462 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1463 { MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1464 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1465 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1466 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1467 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1468 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1469 { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1470 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1471 { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1472 { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1473 { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
1474 { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1475 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1476 /* extra mp4 */
1477 { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1478 /* QT atoms */
1479 { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1480 { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1481 { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1482 { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1483 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1484 { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1485 { MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1486 { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1487 { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1488 { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1489 { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1490 { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1491 { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1492 { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1493 { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1494 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1495 //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1496 #ifdef CONFIG_ZLIB
1497 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1498 #else
1499 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1500 #endif
1501 { 0L, mov_read_leaf }
1502 };
1503
1504 static void mov_free_stream_context(MOVStreamContext *sc)
1505 {
1506 if(sc) {
1507 av_freep(&sc->ctts_data);
1508 av_freep(&sc);
1509 }
1510 }
1511
1512 /* XXX: is it sufficient ? */
1513 static int mov_probe(AVProbeData *p)
1514 {
1515 unsigned int offset;
1516 uint32_t tag;
1517 int score = 0;
1518
1519 /* check file header */
1520 if (p->buf_size <= 12)
1521 return 0;
1522 offset = 0;
1523 for(;;) {
1524 /* ignore invalid offset */
1525 if ((offset + 8) > (unsigned int)p->buf_size)
1526 return score;
1527 tag = LE_32(p->buf + offset + 4);
1528 switch(tag) {
1529 /* check for obvious tags */
1530 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1531 case MKTAG( 'm', 'o', 'o', 'v' ):
1532 case MKTAG( 'm', 'd', 'a', 't' ):
1533 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1534 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1535 return AVPROBE_SCORE_MAX;
1536 /* those are more common words, so rate then a bit less */
1537 case MKTAG( 'w', 'i', 'd', 'e' ):
1538 case MKTAG( 'f', 'r', 'e', 'e' ):
1539 case MKTAG( 'j', 'u', 'n', 'k' ):
1540 case MKTAG( 'p', 'i', 'c', 't' ):
1541 return AVPROBE_SCORE_MAX - 5;
1542 case MKTAG( 'f', 't', 'y', 'p' ):
1543 case MKTAG( 's', 'k', 'i', 'p' ):
1544 case MKTAG( 'u', 'u', 'i', 'd' ):
1545 offset = BE_32(p->buf+offset) + offset;
1546 /* if we only find those cause probedata is too small at least rate them */
1547 score = AVPROBE_SCORE_MAX - 50;
1548 break;
1549 default:
1550 /* unrecognized tag */
1551 return score;
1552 }
1553 }
1554 return score;
1555 }
1556
1557 static void mov_build_index(MOVContext *mov, AVStream *st)
1558 {
1559 MOVStreamContext *sc = st->priv_data;
1560 offset_t current_offset;
1561 int64_t current_dts = 0;
1562 int stts_index = 0;
1563 int stsc_index = 0;
1564 int stss_index = 0;
1565 int i, j, k;
1566
1567 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1568 int keyframe, sample_size;
1569 int current_sample = 0;
1570 int stts_sample = 0;
1571 int distance = 0;
1572
1573 st->nb_frames = sc->sample_count;
1574 for (i = 0; i < sc->chunk_count; i++) {
1575 current_offset = sc->chunk_offsets[i];
1576 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1577 stsc_index++;
1578 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1579 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1580 if (keyframe) {
1581 distance = 0;
1582 if (stss_index + 1 < sc->keyframe_count)
1583 stss_index++;
1584 }
1585 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1586 dprintf("AVIndex stream %d, sample %d, offset %llx, dts %lld, size %d, distance %d, keyframe %d\n",
1587 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1588 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1589 current_offset += sample_size;
1590 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1591 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1592 distance++;
1593 stts_sample++;
1594 if (current_sample + 1 < sc->sample_count)
1595 current_sample++;
1596 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1597 stts_sample = 0;
1598 stts_index++;
1599 }
1600 }
1601 }
1602 } else { /* read whole chunk */
1603 int chunk_samples, chunk_size, chunk_duration;
1604
1605 for (i = 0; i < sc->chunk_count; i++) {
1606 current_offset = sc->chunk_offsets[i];
1607 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1608 stsc_index++;
1609 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1610 /* get chunk size */
1611 if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1612 chunk_size = chunk_samples * sc->sample_size;
1613 else if (sc->sample_size_v1.den > 0 && (chunk_samples * sc->sample_size_v1.num % sc->sample_size_v1.den == 0))
1614 chunk_size = chunk_samples * sc->sample_size_v1.num / sc->sample_size_v1.den;
1615 else { /* workaround to find nearest next chunk offset */
1616 chunk_size = INT_MAX;
1617 for (j = 0; j < mov->total_streams; j++) {
1618 MOVStreamContext *msc = mov->streams[j];
1619
1620 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1621 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1622 chunk_size = msc->chunk_offsets[k] - current_offset;
1623 msc->next_chunk = k;
1624 break;
1625 }
1626 }
1627 }
1628 /* check for last chunk */
1629 if (chunk_size == INT_MAX)
1630 for (j = 0; j < mov->mdat_count; j++) {
1631 dprintf("mdat %d, offset %llx, size %lld, current offset %llx\n",
1632 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1633 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1634 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1635 }
1636 assert(chunk_size != INT_MAX);
1637 for (j = 0; j < mov->total_streams; j++) {
1638 mov->streams[j]->next_chunk = 0;
1639 }
1640 }
1641 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1642 /* get chunk duration */
1643 chunk_duration = 0;
1644 while (chunk_samples > 0) {
1645 if (chunk_samples < sc->stts_data[stts_index].count) {
1646 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1647 sc->stts_data[stts_index].count -= chunk_samples;
1648 break;
1649 } else {
1650 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1651 chunk_samples -= sc->stts_data[stts_index].count;
1652 if (stts_index + 1 < sc->stts_count) {
1653 stts_index++;
1654 }
1655 }
1656 }
1657 dprintf("AVIndex stream %d, chunk %d, offset %llx, dts %lld, size %d, duration %d\n",
1658 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1659 assert(chunk_duration % sc->time_rate == 0);
1660 current_dts += chunk_duration / sc->time_rate;
1661 }
1662 }
1663 /* adjust sample count to avindex entries */
1664 sc->sample_count = st->nb_index_entries;
1665 }
1666
1667 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1668 {
1669 MOVContext *mov = (MOVContext *) s->priv_data;
1670 ByteIOContext *pb = &s->pb;
1671 int i, err;
1672 MOV_atom_t atom = { 0, 0, 0 };
1673
1674 mov->fc = s;
1675 mov->parse_table = mov_default_parse_table;
1676
1677 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1678 atom.size = url_fsize(pb);
1679 else
1680 atom.size = 0x7FFFFFFFFFFFFFFFLL;
1681
1682 /* check MOV header */
1683 err = mov_read_default(mov, pb, atom);
1684 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1685 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1686 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1687 return -1;
1688 }
1689 dprintf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1690
1691 /* some cleanup : make sure we are on the mdat atom */
1692 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1693 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1694
1695 mov->total_streams = s->nb_streams;
1696
1697 for(i=0; i<mov->total_streams; i++) {
1698 MOVStreamContext *sc = mov->streams[i];
1699
1700 if(!sc->time_rate)
1701 sc->time_rate=1;
1702 if(!sc->time_scale)
1703 sc->time_scale= mov->time_scale;
1704 av_set_pts_info(s->streams[i], 64, sc->time_rate, sc->time_scale);
1705
1706 if(s->streams[i]->duration != AV_NOPTS_VALUE){
1707 assert(s->streams[i]->duration % sc->time_rate == 0);
1708 s->streams[i]->duration /= sc->time_rate;
1709 }
1710 sc->ffindex = i;
1711 mov_build_index(mov, s->streams[i]);
1712 }
1713
1714 for(i=0; i<mov->total_streams; i++) {
1715 /* dont need those anymore */
1716 av_freep(&mov->streams[i]->chunk_offsets);
1717 av_freep(&mov->streams[i]->sample_to_chunk);
1718 av_freep(&mov->streams[i]->sample_sizes);
1719 av_freep(&mov->streams[i]->keyframes);
1720 av_freep(&mov->streams[i]->stts_data);
1721 }
1722 av_freep(&mov->mdat_list);
1723 return 0;
1724 }
1725
1726 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1727 {
1728 MOVContext *mov = s->priv_data;
1729 MOVStreamContext *sc = 0;
1730 AVIndexEntry *sample = 0;
1731 int64_t best_dts = INT64_MAX;
1732 int i;
1733
1734 for (i = 0; i < mov->total_streams; i++) {
1735 MOVStreamContext *msc = mov->streams[i];
1736
1737 if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1738 AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1739 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1740
1741 dprintf("stream %d, sample %ld, dts %lld\n", i, msc->current_sample, dts);
1742 if (dts < best_dts) {
1743 sample = current_sample;
1744 best_dts = dts;
1745 sc = msc;
1746 }
1747 }
1748 }
1749 if (!sample)
1750 return -1;
1751 /* must be done just before reading, to avoid infinite loop on sample */
1752 sc->current_sample++;
1753 if (sample->pos >= url_fsize(&s->pb)) {
1754 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%llx: partial file\n", sc->ffindex, sample->pos);
1755 return -1;
1756 }
1757 #ifdef CONFIG_DV_DEMUXER
1758 if (sc->dv_audio_container) {
1759 dv_get_packet(mov->dv_demux, pkt);
1760 dprintf("dv audio pkt size %d\n", pkt->size);
1761 } else {
1762 #endif
1763 url_fseek(&s->pb, sample->pos, SEEK_SET);
1764 av_get_packet(&s->pb, pkt, sample->size);
1765 #ifdef CONFIG_DV_DEMUXER
1766 if (mov->dv_demux) {
1767 void *pkt_destruct_func = pkt->destruct;
1768 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1769 pkt->destruct = pkt_destruct_func;
1770 }
1771 }
1772 #endif
1773 pkt->stream_index = sc->ffindex;
1774 pkt->dts = sample->timestamp;
1775 if (sc->ctts_data) {
1776 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1777 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1778 /* update ctts context */
1779 sc->sample_to_ctime_sample++;
1780 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1781 sc->sample_to_ctime_index++;
1782 sc->sample_to_ctime_sample = 0;
1783 }
1784 } else {
1785 pkt->pts = pkt->dts;
1786 }
1787 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1788 pkt->pos = sample->pos;
1789 dprintf("stream %d, pts %lld, dts %lld, pos 0x%llx, duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1790 return 0;
1791 }
1792
1793 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1794 {
1795 MOVStreamContext *sc = st->priv_data;
1796 int sample, time_sample;
1797 int i;
1798
1799 sample = av_index_search_timestamp(st, timestamp, flags);
1800 dprintf("stream %d, timestamp %lld, sample %d\n", st->index, timestamp, sample);
1801 if (sample < 0) /* not sure what to do */
1802 return -1;
1803 sc->current_sample = sample;
1804 dprintf("stream %d, found sample %ld\n", st->index, sc->current_sample);
1805 /* adjust ctts index */
1806 if (sc->ctts_data) {
1807 time_sample = 0;
1808 for (i = 0; i < sc->ctts_count; i++) {
1809 time_sample += sc->ctts_data[i].count;
1810 if (time_sample >= sc->current_sample) {
1811 sc->sample_to_ctime_index = i;
1812 sc->sample_to_ctime_sample = time_sample - sc->current_sample;
1813 break;
1814 }
1815 }
1816 }
1817 return sample;
1818 }
1819
1820 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1821 {
1822 AVStream *st;
1823 int64_t seek_timestamp, timestamp;
1824 int sample;
1825 int i;
1826
1827 if (stream_index >= s->nb_streams)
1828 return -1;
1829
1830 st = s->streams[stream_index];
1831 sample = mov_seek_stream(st, sample_time, flags);
1832 if (sample < 0)
1833 return -1;
1834
1835 /* adjust seek timestamp to found sample timestamp */
1836 seek_timestamp = st->index_entries[sample].timestamp;
1837
1838 for (i = 0; i < s->nb_streams; i++) {
1839 st = s->streams[i];
1840 if (stream_index == i || st->discard == AVDISCARD_ALL)
1841 continue;
1842
1843 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1844 mov_seek_stream(st, timestamp, flags);
1845 }
1846 return 0;
1847 }
1848
1849 static int mov_read_close(AVFormatContext *s)
1850 {
1851 int i;
1852 MOVContext *mov = (MOVContext *) s->priv_data;
1853 for(i=0; i<mov->total_streams; i++)
1854 mov_free_stream_context(mov->streams[i]);
1855 /* free color tabs */
1856 for(i=0; i<mov->ctab_size; i++)
1857 av_freep(&mov->ctab[i]);
1858 if(mov->dv_demux){
1859 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1860 av_freep(&mov->dv_fctx->streams[i]->codec);
1861 av_freep(&mov->dv_fctx->streams[i]);
1862 }
1863 av_freep(&mov->dv_fctx);
1864 av_freep(&mov->dv_demux);
1865 }
1866 av_freep(&mov->ctab);
1867 return 0;
1868 }
1869
1870 AVInputFormat mov_demuxer = {
1871 "mov,mp4,m4a,3gp,3g2,mj2",
1872 "QuickTime/MPEG4/Motion JPEG 2000 format",
1873 sizeof(MOVContext),
1874 mov_probe,
1875 mov_read_header,
1876 mov_read_packet,
1877 mov_read_close,
1878 mov_read_seek,
1879 };