-fPIC compileable
[libav.git] / libavformat / mov.c
CommitLineData
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1/*
2 * MOV decoder.
19720f15 3 * Copyright (c) 2001 Fabrice Bellard.
6cea494e 4 *
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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.
6cea494e 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
6cea494e 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
6cea494e 14 *
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15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 */
19#include "avformat.h"
20#include "avi.h"
21
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22#ifdef CONFIG_ZLIB
23#include <zlib.h>
24#endif
25
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26/*
27 * First version by Francois Revol revol@free.fr
28 *
29 * Features and limitations:
30 * - reads most of the QT files I have (at least the structure),
31 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
0147f198 32 * FIXED, Francois Revol, 07/17/2002
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33 * - ffmpeg has nearly none of the usual QuickTime codecs,
34 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
35 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
36 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
37 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
38 * http://mpeg.telecomitalialab.com/faq.htm
39 * - the code is quite ugly... maybe I won't do it recursive next time :-)
40 *
41 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
42 * when coding this :) (it's a writer anyway)
43 *
44 * Reference documents:
45 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
46 * Apple:
47 * http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
48 * http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
49 * QuickTime is a trademark of Apple (AFAIK :))
50 */
51
c9a65ca8 52//#define DEBUG
6cea494e 53
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54/* allows chunk splitting - should work now... */
55/* in case you can't read a file, try commenting */
56#define MOV_SPLIT_CHUNKS
57
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58#ifdef DEBUG
59/*
60 * XXX: static sux, even more in a multithreaded environment...
61 * Avoid them. This is here just to help debugging.
62 */
63static int debug_indent = 0;
64void print_atom(const char *str, UINT32 type, UINT64 offset, UINT64 size)
65{
66 unsigned int tag, i;
67 tag = (unsigned int) type;
68 i=debug_indent;
69 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
70 while(i--)
71 printf("|");
72 printf("parse:");
3ffe3793 73 printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
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74 str, tag & 0xff,
75 (tag >> 8) & 0xff,
76 (tag >> 16) & 0xff,
77 (tag >> 24) & 0xff,
78 (unsigned int)offset,
79 (unsigned int)size);
80}
81#endif
82
83/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
84/* so we first list them as this, then clean up the list of streams we give back, */
85/* getting rid of these */
86#define CODEC_TYPE_MOV_OTHER 2
87
a266644f 88static const CodecTag mov_video_tags[] = {
6cea494e 89/* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
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90/* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
91/* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
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92/* Graphics */
93/* Animation */
94/* Apple video */
95/* Kodak Photo CD */
3ffe3793 96 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
6cea494e 97 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
3ffe3793 98 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
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99 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
100/* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
101/* Sorenson video */
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102 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
103 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
3ffe3793 104 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
0e7eed09 105 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
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106 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
107/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
0147f198 108 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
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109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
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111 { 0, 0 },
112};
113
a266644f 114static const CodecTag mov_audio_tags[] = {
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115/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
116 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
117 { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') }, /* 8 bits */
118 { CODEC_ID_PCM_U8, 0x20776172 }, /* 8 bits unsigned */
119 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
120 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
121 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
0147f198 122 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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123 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
124 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
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125
126 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
127 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
128 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
129/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
130/* MP4 tags */
131/* { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, *//* MPEG 4 AAC or audio ? */
132 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
133 { 0, 0 },
134};
135
136/* the QuickTime file format is quite convoluted...
137 * it has lots of index tables, each indexing something in another one...
138 * Here we just use what is needed to read the chunks
139 */
140
141typedef struct MOV_sample_to_chunk_tbl {
142 long first;
143 long count;
144 long id;
145} MOV_sample_to_chunk_tbl;
146
147typedef struct MOVStreamContext {
148 int ffindex; /* the ffmpeg stream id */
149 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
150 long next_chunk;
151 long chunk_count;
152 INT64 *chunk_offsets;
153 long sample_to_chunk_sz;
154 MOV_sample_to_chunk_tbl *sample_to_chunk;
3ffe3793 155 long sample_to_chunk_index;
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156 long sample_size;
157 long sample_count;
158 long *sample_sizes;
0147f198 159 long time_scale;
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160 long current_sample;
161 long left_in_chunk; /* how many samples before next chunk */
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162 /* specific MPEG4 header which is added at the beginning of the stream */
163 int header_len;
164 uint8_t *header_data;
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165} MOVStreamContext;
166
167typedef struct MOVContext {
168 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) */
169 AVFormatContext *fc;
170 long time_scale;
171 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
172 int found_mdat; /* we suppose we have enough data to read the file */
173 INT64 mdat_size;
174 INT64 mdat_offset;
175 int total_streams;
176 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
177 * but we need the info to be able to skip data from those streams in the 'mdat' section
178 */
179 MOVStreamContext *streams[MAX_STREAMS];
180
181 INT64 next_chunk_offset;
3ffe3793 182 int partial; /* != 0 : there is still to read in the current chunk (=id of the stream + 1) */
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183} MOVContext;
184
185
186struct MOVParseTableEntry;
187
188/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
189
190/* those functions parse an atom */
191/* return code:
192 1: found what I wanted, exit
193 0: continue to parse next atom
194 -1: error occured, exit
195 */
684f44d9 196typedef int (*mov_parse_function)(const struct MOVParseTableEntry *parse_table,
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197 ByteIOContext *pb,
198 UINT32 atom_type,
199 INT64 atom_offset, /* after the size and type field (and eventually the extended size) */
200 INT64 atom_size, /* total size (excluding the size and type fields) */
201 void *param);
202
203/* links atom IDs to parse functions */
204typedef struct MOVParseTableEntry {
205 UINT32 type;
206 mov_parse_function func;
207} MOVParseTableEntry;
208
684f44d9 209static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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210{
211#ifdef DEBUG
212 print_atom("leaf", atom_type, atom_offset, atom_size);
213#endif
214 if(atom_size>1)
215 url_fskip(pb, atom_size);
216/* url_seek(pb, atom_offset+atom_size, SEEK_SET); */
217 return 0;
218}
219
220
684f44d9 221static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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222{
223 UINT32 type, foo=0;
224 UINT64 offset, size;
225 UINT64 total_size = 0;
226 int i;
227 int err = 0;
228 foo=0;
229#ifdef DEBUG
230 print_atom("default", atom_type, atom_offset, atom_size);
231 debug_indent++;
232#endif
233
234 offset = atom_offset;
235
236 if(atom_size < 0)
237 atom_size = 0x0FFFFFFFFFFFFFFF;
238 while((total_size < atom_size) && !url_feof(pb) && !err) {
239 size=atom_size;
240 type=0L;
241 if(atom_size >= 8) {
242 size = get_be32(pb);
243 type = get_le32(pb);
244 }
245 total_size += 8;
246 offset+=8;
247// printf("type: %08lx sz: %08lx", type, size);
248 if(size == 1) { /* 64 bit extended size */
249 size = get_be64(pb);
250 offset+=8;
251 total_size+=8;
252 size-=8;
253 }
254 if(size == 0)
255 size = atom_size - total_size;
256 size-=8;
257 for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++);
258
259// printf(" i=%ld\n", i);
684f44d9 260 if (parse_table[i].type == 0) { /* skip leaf atoms data */
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261// url_seek(pb, atom_offset+atom_size, SEEK_SET);
262#ifdef DEBUG
263 print_atom("unknown", type, offset, size);
264#endif
265 url_fskip(pb, size);
266 } else
267 err = (parse_table[i].func)(parse_table, pb, type, offset, size, param);
268
269 offset+=size;
270 total_size+=size;
271 }
272
273#ifdef DEBUG
274 debug_indent--;
275#endif
276 return err;
277}
278
684f44d9 279static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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280{
281 MOVContext *c;
282#ifdef DEBUG
283 print_atom("mvhd", atom_type, atom_offset, atom_size);
284#endif
285 c = (MOVContext *)param;
286
287 get_byte(pb); /* version */
288 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
289
290 get_be32(pb); /* creation time */
291 get_be32(pb); /* modification time */
292 c->time_scale = get_be32(pb); /* time scale */
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293#ifdef DEBUG
294 printf("time scale = %li\n", c->time_scale);
295#endif
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296 get_be32(pb); /* duration */
297 get_be32(pb); /* preferred scale */
298
299 get_be16(pb); /* preferred volume */
300
301 url_fskip(pb, 10); /* reserved */
302
303 url_fskip(pb, 36); /* display matrix */
304
305 get_be32(pb); /* preview time */
306 get_be32(pb); /* preview duration */
307 get_be32(pb); /* poster time */
308 get_be32(pb); /* selection time */
309 get_be32(pb); /* selection duration */
310 get_be32(pb); /* current time */
311 get_be32(pb); /* next track ID */
312
313 return 0;
314}
315
316/* this atom should contain all header atoms */
684f44d9 317static int parse_moov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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318{
319 int err;
320 MOVContext *c;
321#ifdef DEBUG
322 print_atom("moov", atom_type, atom_offset, atom_size);
323#endif
324 c = (MOVContext *)param;
325
326 err = parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
327 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
328 /* so we don't parse the whole file if over a network */
329 c->found_moov=1;
330 if(c->found_mdat)
331 return 1; /* found both, just go */
332 return 0; /* now go for mdat */
333}
334
335/* this atom contains actual media data */
684f44d9 336static int parse_mdat(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e 337{
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338 MOVContext *c;
339#ifdef DEBUG
340 print_atom("mdat", atom_type, atom_offset, atom_size);
341#endif
342 c = (MOVContext *)param;
343
344 if(atom_size == 0) /* wrong one (MP4) */
345 return 0;
346 c->found_mdat=1;
347 c->mdat_offset = atom_offset;
348 c->mdat_size = atom_size;
349 if(c->found_moov)
350 return 1; /* found both, just go */
351 url_fskip(pb, atom_size);
352 return 0; /* now go for moov */
353}
354
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355/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
356/* like the files created with Adobe Premiere 5.0, for samples see */
357/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
358static int parse_wide(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
359{
360 int err;
361 UINT32 type;
362#ifdef DEBUG
363 print_atom("wide", atom_type, atom_offset, atom_size);
364 debug_indent++;
365#endif
366 if (atom_size < 8)
367 return 0; /* continue */
368 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
369 url_fskip(pb, atom_size - 4);
370 return 0;
371 }
372 type = get_le32(pb);
373 if (type != MKTAG('m', 'd', 'a', 't')) {
374 url_fskip(pb, atom_size - 8);
375 return 0;
376 }
377 err = parse_mdat(parse_table, pb, type, atom_offset + 8, atom_size - 8, param);
378#ifdef DEBUG
379 debug_indent--;
380#endif
381 return err;
382}
383
684f44d9 384static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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385{
386 MOVContext *c;
387 AVStream *st;
388 MOVStreamContext *sc;
389#ifdef DEBUG
390 print_atom("trak", atom_type, atom_offset, atom_size);
391#endif
392
393 c = (MOVContext *)param;
3ffe3793 394 st = av_new_stream(c->fc, c->fc->nb_streams);
1ea4f593 395 if (!st) return -2;
1ea4f593 396 sc = av_malloc(sizeof(MOVStreamContext));
3ffe3793 397 sc->sample_to_chunk_index = -1;
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398 st->priv_data = sc;
399 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
3ffe3793 400 c->streams[c->fc->nb_streams-1] = sc;
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401 return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
402}
403
684f44d9 404static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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405{
406 MOVContext *c;
407 AVStream *st;
408#ifdef DEBUG
409 print_atom("tkhd", atom_type, atom_offset, atom_size);
410#endif
411
412 c = (MOVContext *)param;
413 st = c->fc->streams[c->fc->nb_streams-1];
414
415 get_byte(pb); /* version */
416
417 get_byte(pb); get_byte(pb);
418 get_byte(pb); /* flags */
419 /*
420 MOV_TRACK_ENABLED 0x0001
421 MOV_TRACK_IN_MOVIE 0x0002
422 MOV_TRACK_IN_PREVIEW 0x0004
423 MOV_TRACK_IN_POSTER 0x0008
424 */
425
426 get_be32(pb); /* creation time */
427 get_be32(pb); /* modification time */
428 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
429 get_be32(pb); /* reserved */
430 get_be32(pb); /* duration */
431 get_be32(pb); /* reserved */
432 get_be32(pb); /* reserved */
433
434 get_be16(pb); /* layer */
435 get_be16(pb); /* alternate group */
436 get_be16(pb); /* volume */
437 get_be16(pb); /* reserved */
438
439 url_fskip(pb, 36); /* display matrix */
440
441 /* those are fixed-point */
442 st->codec.width = get_be32(pb) >> 16; /* track width */
443 st->codec.height = get_be32(pb) >> 16; /* track height */
444
445 return 0;
446}
447
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448static int parse_mdhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
449{
450 MOVContext *c;
451 AVStream *st;
452#ifdef DEBUG
453 print_atom("mdhd", atom_type, atom_offset, atom_size);
454#endif
455
456 c = (MOVContext *)param;
457 st = c->fc->streams[c->fc->nb_streams-1];
458
459 get_byte(pb); /* version */
460
461 get_byte(pb); get_byte(pb);
462 get_byte(pb); /* flags */
463
464 get_be32(pb); /* creation time */
465 get_be32(pb); /* modification time */
466
467 c->streams[c->total_streams]->time_scale = get_be32(pb);
468
469#ifdef DEBUG
470 printf("track[%i].time_scale = %li\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
471#endif
472 get_be32(pb); /* duration */
473
474 get_be16(pb); /* language */
475 get_be16(pb); /* quality */
476
477 return 0;
478}
479
684f44d9 480static int parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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481{
482 MOVContext *c;
3ffe3793 483 int len = 0;
c9a65ca8 484 char *buf;
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485 UINT32 type;
486 AVStream *st;
487 UINT32 ctype;
488#ifdef DEBUG
489 print_atom("hdlr", atom_type, atom_offset, atom_size);
490#endif
491 c = (MOVContext *)param;
492 st = c->fc->streams[c->fc->nb_streams-1];
493
494 get_byte(pb); /* version */
495 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
496
497 /* component type */
498 ctype = get_le32(pb);
499 type = get_le32(pb); /* component subtype */
500
501#ifdef DEBUG
684f44d9 502 printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
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503 printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
504#endif
505#ifdef DEBUG
506/* XXX: yeah this is ugly... */
507 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
508 if(type == MKTAG('v', 'i', 'd', 'e'))
509 puts("hdlr: vide");
510 else if(type == MKTAG('s', 'o', 'u', 'n'))
511 puts("hdlr: soun");
512 } else if(ctype == 0) { /* MP4 */
513 if(type == MKTAG('v', 'i', 'd', 'e'))
514 puts("hdlr: vide");
515 else if(type == MKTAG('s', 'o', 'u', 'n'))
516 puts("hdlr: soun");
517 else if(type == MKTAG('o', 'd', 's', 'm'))
518 puts("hdlr: odsm");
519 else if(type == MKTAG('s', 'd', 's', 'm'))
520 puts("hdlr: sdsm");
521 } else puts("hdlr: meta");
522#endif
523
524 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
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525 /* helps parsing the string hereafter... */
526 c->mp4 = 0;
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527 if(type == MKTAG('v', 'i', 'd', 'e'))
528 st->codec.codec_type = CODEC_TYPE_VIDEO;
529 else if(type == MKTAG('s', 'o', 'u', 'n'))
530 st->codec.codec_type = CODEC_TYPE_AUDIO;
531 } else if(ctype == 0) { /* MP4 */
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532 /* helps parsing the string hereafter... */
533 c->mp4 = 1;
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534 if(type == MKTAG('v', 'i', 'd', 'e'))
535 st->codec.codec_type = CODEC_TYPE_VIDEO;
536 else if(type == MKTAG('s', 'o', 'u', 'n'))
537 st->codec.codec_type = CODEC_TYPE_AUDIO;
538 }
539 get_be32(pb); /* component manufacture */
540 get_be32(pb); /* component flags */
541 get_be32(pb); /* component flags mask */
542
543 if(atom_size <= 24)
544 return 0; /* nothing left to read */
545 /* XXX: MP4 uses a C string, not a pascal one */
546 /* component name */
0147f198
FR
547
548 if(c->mp4) {
549 /* .mp4: C string */
550 while(get_byte(pb) && (++len < (atom_size - 24)));
551 } else {
552 /* .mov: PASCAL string */
553 len = get_byte(pb);
554 buf = av_malloc(len+1);
555 get_buffer(pb, buf, len);
556 buf[len] = '\0';
557#ifdef DEBUG
558 printf("**buf='%s'\n", buf);
559#endif
560 av_free(buf);
561 }
562#if 0
c9a65ca8
FB
563 len = get_byte(pb);
564 /* XXX: use a better heuristic */
565 if(len < 32) {
566 /* assume that it is a Pascal like string */
567 buf = av_malloc(len+1);
568 get_buffer(pb, buf, len);
569 buf[len] = '\0';
6cea494e 570#ifdef DEBUG
c9a65ca8 571 printf("**buf='%s'\n", buf);
6cea494e 572#endif
c9a65ca8 573 av_free(buf);
6cea494e 574 } else {
c9a65ca8
FB
575 /* MP4 string */
576 for(;;) {
577 if (len == 0)
578 break;
579 len = get_byte(pb);
6cea494e
ZK
580 }
581 }
0147f198 582#endif
6cea494e
ZK
583
584 return 0;
585}
586
0e7eed09
FB
587static int mp4_read_descr_len(ByteIOContext *pb)
588{
589 int c, len, count;
590
591 len = 0;
592 count = 0;
593 for(;;) {
594 c = get_byte(pb);
595 len = (len << 7) | (c & 0x7f);
596 if ((c & 0x80) == 0)
597 break;
598 if (++count == 4)
599 break;
600 }
601 return len;
602}
603
604static int mp4_read_descr(ByteIOContext *pb, int *tag)
605{
606 int len;
607 *tag = get_byte(pb);
608 len = mp4_read_descr_len(pb);
609#ifdef DEBUG
610 printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
611#endif
612 return len;
613}
614
684f44d9 615static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
616{
617 MOVContext *c;
0e7eed09 618 int entries, size, samp_sz, frames_per_sample, id;
6cea494e
ZK
619 UINT32 format;
620 AVStream *st;
0e7eed09 621 MOVStreamContext *sc;
6cea494e
ZK
622#ifdef DEBUG
623 print_atom("stsd", atom_type, atom_offset, atom_size);
624#endif
625 c = (MOVContext *)param;
626 st = c->fc->streams[c->fc->nb_streams-1];
0e7eed09 627 sc = (MOVStreamContext *)st->priv_data;
6cea494e
ZK
628
629 get_byte(pb); /* version */
630 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
631
6cea494e
ZK
632 entries = get_be32(pb);
633
634 while(entries--) {
635 size = get_be32(pb); /* size */
636 format = get_le32(pb); /* data format */
637
638 get_be32(pb); /* reserved */
639 get_be16(pb); /* reserved */
640 get_be16(pb); /* index */
0e7eed09
FB
641
642 /* for MPEG4: set codec type by looking for it */
643 id = codec_get_id(mov_video_tags, format);
644 if (id >= 0) {
645 AVCodec *codec;
646 codec = avcodec_find_decoder(id);
647 if (codec)
648 st->codec.codec_type = codec->type;
649 }
650#ifdef DEBUG
651 printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
652 size,
653 (format >> 0) & 0xff,
654 (format >> 8) & 0xff,
655 (format >> 16) & 0xff,
656 (format >> 24) & 0xff,
657 st->codec.codec_type);
658#endif
6cea494e
ZK
659 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
660 st->codec.codec_tag = format;
661 st->codec.codec_id = codec_get_id(mov_video_tags, format);
662 get_be16(pb); /* version */
663 get_be16(pb); /* revision level */
664 get_be32(pb); /* vendor */
665 get_be32(pb); /* temporal quality */
666 get_be32(pb); /* spacial quality */
667 st->codec.width = get_be16(pb); /* width */
668 st->codec.height = get_be16(pb); /* height */
0e7eed09
FB
669#if 1
670 if (st->codec.codec_id == CODEC_ID_MPEG4) {
671 /* in some MPEG4 the width/height are not correct, so
672 we ignore this info */
673 st->codec.width = 0;
674 st->codec.height = 0;
675 }
676#endif
6cea494e
ZK
677 get_be32(pb); /* horiz resolution */
678 get_be32(pb); /* vert resolution */
679 get_be32(pb); /* data size, always 0 */
680 frames_per_sample = get_be16(pb); /* frame per samples */
681#ifdef DEBUG
684f44d9 682 printf("frames/samples = %d\n", frames_per_sample);
6cea494e
ZK
683#endif
684 url_fskip(pb, 32); /* codec name */
685
686 get_be16(pb); /* depth */
687 get_be16(pb); /* colortable id */
6cea494e 688
0e7eed09 689 st->codec.frame_rate = 25 * FRAME_RATE_BASE;
6cea494e 690
0e7eed09
FB
691 size -= (16+8*4+2+32+2*2);
692 while (size >= 8) {
693 int atom_size, atom_type;
694 INT64 start_pos;
695
696 atom_size = get_be32(pb);
697 atom_type = get_le32(pb);
698 size -= 8;
699#ifdef DEBUG
700 printf("VIDEO: atom_type=%c%c%c%c atom_size=%d size_left=%d\n",
701 (atom_type >> 0) & 0xff,
702 (atom_type >> 8) & 0xff,
703 (atom_type >> 16) & 0xff,
704 (atom_type >> 24) & 0xff,
705 atom_size, size);
706#endif
707 start_pos = url_ftell(pb);
708
709 switch(atom_type) {
710 case MKTAG('e', 's', 'd', 's'):
711 {
712 int tag, len;
713 /* Well, broken but suffisant for some MP4 streams */
714 get_be32(pb); /* version + flags */
715 len = mp4_read_descr(pb, &tag);
716 if (tag == 0x03) {
717 /* MP4ESDescrTag */
718 get_be16(pb); /* ID */
719 get_byte(pb); /* priority */
720 len = mp4_read_descr(pb, &tag);
721 if (tag != 0x04)
722 goto fail;
723 /* MP4DecConfigDescrTag */
724 get_byte(pb); /* objectTypeId */
725 get_be32(pb); /* streamType + buffer size */
726 get_be32(pb); /* max bit rate */
727 get_be32(pb); /* avg bit rate */
728 len = mp4_read_descr(pb, &tag);
729 if (tag != 0x05)
730 goto fail;
731 /* MP4DecSpecificDescrTag */
732#ifdef DEBUG
733 printf("Specific MPEG4 header len=%d\n", len);
734#endif
735 sc->header_data = av_mallocz(len);
736 if (sc->header_data) {
737 get_buffer(pb, sc->header_data, len);
738 sc->header_len = len;
739 }
740 }
741 /* in any case, skip garbage */
742 }
743 break;
744 default:
745 break;
746 }
747 fail:
748 url_fskip(pb, (atom_size - 8) -
749 ((url_ftell(pb) - start_pos)));
750 size -= atom_size - 8;
751 }
752 if (size > 0) {
753 /* unknown extension */
754 url_fskip(pb, size);
755 }
6cea494e
ZK
756 } else {
757 st->codec.codec_tag = format;
758
759 get_be16(pb); /* version */
760 get_be16(pb); /* revision level */
761 get_be32(pb); /* vendor */
762
763 st->codec.channels = get_be16(pb);/* channel count */
764 samp_sz = get_be16(pb); /* sample size */
765#ifdef DEBUG
766 if(samp_sz != 16)
767 puts("!!! stsd: audio sample size is not 16 bit !");
768#endif
769 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
770 /* handle specific s8 codec */
771 if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8)
772 st->codec.codec_id = CODEC_ID_PCM_S8;
773
774 get_be16(pb); /* compression id = 0*/
775 get_be16(pb); /* packet size = 0 */
776
777 st->codec.sample_rate = ((get_be32(pb) >> 16));
778 st->codec.bit_rate = 0;
6cea494e
ZK
779#if 0
780
781 get_be16(pb); get_be16(pb); /* */
782 get_be16(pb); /* */
783 get_be16(pb); /* */
784 get_be16(pb); /* */
785 get_be16(pb); /* */
786#endif
787 if(size > 16)
788 url_fskip(pb, size-(16+20));
789 }
6cea494e
ZK
790 }
791/*
792 if(len) {
1ea4f593 793 buf = av_malloc(len+1);
6cea494e
ZK
794 get_buffer(pb, buf, len);
795 buf[len] = '\0';
796 puts(buf);
1ea4f593 797 av_free(buf);
6cea494e
ZK
798 }
799*/
800 return 0;
801}
802
684f44d9 803static int parse_stco(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
804{
805 MOVContext *c;
806 int entries, i;
807 AVStream *st;
808 MOVStreamContext *sc;
809#ifdef DEBUG
810 print_atom("stco", atom_type, atom_offset, atom_size);
811#endif
812 c = (MOVContext *)param;
813 st = c->fc->streams[c->fc->nb_streams-1];
814 sc = (MOVStreamContext *)st->priv_data;
815
816 get_byte(pb); /* version */
817 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
818
819 entries = get_be32(pb);
820 sc->chunk_count = entries;
1ea4f593 821 sc->chunk_offsets = av_malloc(entries * sizeof(INT64));
6cea494e
ZK
822 if(atom_type == MKTAG('s', 't', 'c', 'o')) {
823 for(i=0; i<entries; i++) {
824 sc->chunk_offsets[i] = get_be32(pb);
6cea494e
ZK
825 }
826 } else if(atom_type == MKTAG('c', 'o', '6', '4')) {
827 for(i=0; i<entries; i++) {
828 sc->chunk_offsets[i] = get_be64(pb);
6cea494e
ZK
829 }
830 } else
831 return -1;
0e7eed09 832#ifdef DEBUG
3f95e843 833/*
0e7eed09
FB
834 for(i=0; i<entries; i++) {
835 printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
836 }
3f95e843 837*/
0e7eed09 838#endif
6cea494e
ZK
839 return 0;
840}
841
684f44d9 842static int parse_stsc(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
843{
844 MOVContext *c;
845 int entries, i;
846 AVStream *st;
847 MOVStreamContext *sc;
848#ifdef DEBUG
849 print_atom("stsc", atom_type, atom_offset, atom_size);
850#endif
851 c = (MOVContext *)param;
852 st = c->fc->streams[c->fc->nb_streams-1];
853 sc = (MOVStreamContext *)st->priv_data;
854
855 get_byte(pb); /* version */
856 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
857
858 entries = get_be32(pb);
3ffe3793
FR
859#ifdef DEBUG
860printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
861#endif
6cea494e 862 sc->sample_to_chunk_sz = entries;
1ea4f593 863 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
6cea494e
ZK
864 for(i=0; i<entries; i++) {
865 sc->sample_to_chunk[i].first = get_be32(pb);
866 sc->sample_to_chunk[i].count = get_be32(pb);
867 sc->sample_to_chunk[i].id = get_be32(pb);
868#ifdef DEBUG
869/* printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
870#endif
871 }
872 return 0;
873}
874
684f44d9 875static int parse_stsz(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
876{
877 MOVContext *c;
878 int entries, i;
879 AVStream *st;
880 MOVStreamContext *sc;
881#ifdef DEBUG
882 print_atom("stsz", atom_type, atom_offset, atom_size);
883#endif
884 c = (MOVContext *)param;
885 st = c->fc->streams[c->fc->nb_streams-1];
886 sc = (MOVStreamContext *)st->priv_data;
887
888 get_byte(pb); /* version */
889 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
890
891 sc->sample_size = get_be32(pb);
892 entries = get_be32(pb);
893 sc->sample_count = entries;
0147f198 894#ifdef DEBUG
6cea494e 895 printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
0147f198 896#endif
6cea494e
ZK
897 if(sc->sample_size)
898 return 0; /* there isn't any table following */
1ea4f593 899 sc->sample_sizes = av_malloc(entries * sizeof(long));
6cea494e
ZK
900 for(i=0; i<entries; i++) {
901 sc->sample_sizes[i] = get_be32(pb);
902#ifdef DEBUG
903/* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
904#endif
905 }
906 return 0;
907}
908
0147f198
FR
909static int parse_stts(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
910{
911 MOVContext *c;
912 int entries, i;
913 AVStream *st;
914 MOVStreamContext *sc;
915#ifdef DEBUG
916 print_atom("stts", atom_type, atom_offset, atom_size);
917#endif
918 c = (MOVContext *)param;
919 st = c->fc->streams[c->fc->nb_streams-1];
920 sc = (MOVStreamContext *)st->priv_data;
921
922 get_byte(pb); /* version */
923 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
924 entries = get_be32(pb);
3ffe3793
FR
925#ifdef DEBUG
926printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
927#endif
0147f198
FR
928 for(i=0; i<entries; i++) {
929 int sample_duration;
930
931 get_be32(pb);
932 sample_duration = get_be32(pb);
933
934 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
3ffe3793
FR
935 st->codec.frame_rate = FRAME_RATE_BASE * c->streams[c->total_streams]->time_scale;
936 if (sample_duration)
937 st->codec.frame_rate /= sample_duration;
0147f198 938#ifdef DEBUG
3ffe3793 939 printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
0147f198
FR
940#endif
941 }
942 }
943 return 0;
944}
945
946#ifdef CONFIG_ZLIB
947static int null_read_packet(void *opaque, UINT8 *buf, int buf_size)
948{
949 return -1;
950}
951
952static int parse_cmov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
953{
954 MOVContext *c;
955 ByteIOContext ctx;
956 char *cmov_data;
957 unsigned char *moov_data; /* uncompressed data */
958 long cmov_len, moov_len;
959 int ret;
960#ifdef DEBUG
961 print_atom("cmov", atom_type, atom_offset, atom_size);
962#endif
963 c = (MOVContext *)param;
964
965 get_be32(pb); /* dcom atom */
966 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
967 return -1;
968 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
969 puts("unknown compression for cmov atom !");
970 return -1;
971 }
972 get_be32(pb); /* cmvd atom */
973 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
974 return -1;
975 moov_len = get_be32(pb); /* uncompressed size */
976 cmov_len = atom_size - 6 * 4;
977
978 cmov_data = av_malloc(cmov_len);
979 if (!cmov_data)
980 return -1;
981 moov_data = av_malloc(moov_len);
982 if (!moov_data) {
983 av_free(cmov_data);
984 return -1;
985 }
986 get_buffer(pb, cmov_data, cmov_len);
987 if(uncompress (moov_data, &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
988 return -1;
989 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
990 return -1;
991 ctx.buf_end = ctx.buffer + moov_len;
992 ret = parse_default(parse_table, &ctx, MKTAG( 'm', 'o', 'o', 'v' ), 0, moov_len, param);
993 av_free(moov_data);
994 av_free(cmov_data);
995 return ret;
996}
997#endif
998
6cea494e
ZK
999static const MOVParseTableEntry mov_default_parse_table[] = {
1000/* mp4 atoms */
1001{ MKTAG( 'm', 'p', '4', 'a' ), parse_default },
1002{ MKTAG( 'c', 'o', '6', '4' ), parse_stco },
1003{ MKTAG( 's', 't', 'c', 'o' ), parse_stco },
1004{ MKTAG( 'c', 'r', 'h', 'd' ), parse_default },
1005{ MKTAG( 'c', 't', 't', 's' ), parse_leaf },
1006{ MKTAG( 'c', 'p', 'r', 't' ), parse_default },
1007{ MKTAG( 'u', 'r', 'l', ' ' ), parse_leaf },
1008{ MKTAG( 'u', 'r', 'n', ' ' ), parse_leaf },
1009{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default },
1010{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf },
1011{ MKTAG( 's', 't', 'd', 'p' ), parse_default },
1012{ MKTAG( 'e', 's', 'd', 's' ), parse_default },
1013{ MKTAG( 'e', 'd', 't', 's' ), parse_default },
1014{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf },
1015{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default },
1016{ MKTAG( 'f', 'r', 'e', 'e' ), parse_leaf },
1017{ MKTAG( 'h', 'd', 'l', 'r' ), parse_hdlr },
3ffe3793 1018{ MKTAG( 'h', 'm', 'h', 'd' ), parse_leaf },
6cea494e
ZK
1019{ MKTAG( 'h', 'i', 'n', 't' ), parse_leaf },
1020{ MKTAG( 'n', 'm', 'h', 'd' ), parse_leaf },
1021{ MKTAG( 'm', 'p', '4', 's' ), parse_default },
1022{ MKTAG( 'm', 'd', 'i', 'a' ), parse_default },
1023{ MKTAG( 'm', 'd', 'a', 't' ), parse_mdat },
0147f198 1024{ MKTAG( 'm', 'd', 'h', 'd' ), parse_mdhd },
6cea494e
ZK
1025{ MKTAG( 'm', 'i', 'n', 'f' ), parse_default },
1026{ MKTAG( 'm', 'o', 'o', 'v' ), parse_moov },
1027{ MKTAG( 'm', 'v', 'h', 'd' ), parse_mvhd },
1028{ MKTAG( 'i', 'o', 'd', 's' ), parse_leaf },
1029{ MKTAG( 'o', 'd', 'h', 'd' ), parse_default },
1030{ MKTAG( 'm', 'p', 'o', 'd' ), parse_leaf },
1031{ MKTAG( 's', 't', 's', 'd' ), parse_stsd },
1032{ MKTAG( 's', 't', 's', 'z' ), parse_stsz },
1033{ MKTAG( 's', 't', 'b', 'l' ), parse_default },
1034{ MKTAG( 's', 't', 's', 'c' ), parse_stsc },
1035{ MKTAG( 's', 'd', 'h', 'd' ), parse_default },
1036{ MKTAG( 's', 't', 's', 'h' ), parse_default },
1037{ MKTAG( 's', 'k', 'i', 'p' ), parse_default },
1038{ MKTAG( 's', 'm', 'h', 'd' ), parse_leaf },
1039{ MKTAG( 'd', 'p', 'n', 'd' ), parse_leaf },
1040{ MKTAG( 's', 't', 's', 's' ), parse_leaf },
0147f198 1041{ MKTAG( 's', 't', 't', 's' ), parse_stts },
6cea494e
ZK
1042{ MKTAG( 't', 'r', 'a', 'k' ), parse_trak },
1043{ MKTAG( 't', 'k', 'h', 'd' ), parse_tkhd },
1044{ MKTAG( 't', 'r', 'e', 'f' ), parse_default }, /* not really */
1045{ MKTAG( 'u', 'd', 't', 'a' ), parse_leaf },
1046{ MKTAG( 'v', 'm', 'h', 'd' ), parse_leaf },
1047{ MKTAG( 'm', 'p', '4', 'v' ), parse_default },
1048/* extra mp4 */
1049{ MKTAG( 'M', 'D', 'E', 'S' ), parse_leaf },
1050/* QT atoms */
1051{ MKTAG( 'c', 'h', 'a', 'p' ), parse_leaf },
1052{ MKTAG( 'c', 'l', 'i', 'p' ), parse_default },
1053{ MKTAG( 'c', 'r', 'g', 'n' ), parse_leaf },
1054{ MKTAG( 'k', 'm', 'a', 't' ), parse_leaf },
1055{ MKTAG( 'm', 'a', 't', 't' ), parse_default },
1056{ MKTAG( 'r', 'd', 'r', 'f' ), parse_leaf },
1057{ MKTAG( 'r', 'm', 'd', 'a' ), parse_default },
1058{ MKTAG( 'r', 'm', 'd', 'r' ), parse_leaf },
1059//{ MKTAG( 'r', 'm', 'q', 'u' ), parse_leaf },
1060{ MKTAG( 'r', 'm', 'r', 'a' ), parse_default },
1061{ MKTAG( 's', 'c', 'p', 't' ), parse_leaf },
1062{ MKTAG( 's', 'y', 'n', 'c' ), parse_leaf },
1063{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf },
1064{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf },
3ffe3793 1065{ MKTAG( 'w', 'i', 'd', 'e' ), parse_wide }, /* place holder */
0147f198
FR
1066#ifdef CONFIG_ZLIB
1067{ MKTAG( 'c', 'm', 'o', 'v' ), parse_cmov },
1068#else
1069{ MKTAG( 'c', 'm', 'o', 'v' ), parse_leaf },
1070#endif
6cea494e
ZK
1071{ 0L, parse_leaf }
1072};
1073
1074static void mov_free_stream_context(MOVStreamContext *sc)
1075{
1076 if(sc) {
1ea4f593
FB
1077 av_free(sc->chunk_offsets);
1078 av_free(sc->sample_to_chunk);
0e7eed09 1079 av_free(sc->header_data);
1ea4f593 1080 av_free(sc);
6cea494e
ZK
1081 }
1082}
1083
0e7eed09
FB
1084static uint32_t to_tag(uint8_t *buf)
1085{
1086 return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
1087}
1088
1089static uint32_t to_be32(uint8_t *buf)
1090{
1091 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1092}
1093
c9a65ca8
FB
1094/* XXX: is it suffisant ? */
1095static int mov_probe(AVProbeData *p)
1096{
0e7eed09
FB
1097 unsigned int offset;
1098 uint32_t tag;
3ffe3793 1099
c9a65ca8
FB
1100 /* check file header */
1101 if (p->buf_size <= 12)
1102 return 0;
0e7eed09
FB
1103 offset = 0;
1104 for(;;) {
1105 /* ignore invalid offset */
1106 if ((offset + 8) > (unsigned int)p->buf_size)
3ffe3793 1107 return 0;
0e7eed09
FB
1108 tag = to_tag(p->buf + offset + 4);
1109 switch(tag) {
1110 case MKTAG( 'm', 'o', 'o', 'v' ):
1111 case MKTAG( 'w', 'i', 'd', 'e' ):
1112 case MKTAG( 'f', 'r', 'e', 'e' ):
8b879f18
FR
1113 case MKTAG( 'm', 'd', 'a', 't' ):
1114 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
3ffe3793 1115 return AVPROBE_SCORE_MAX;
0e7eed09
FB
1116 case MKTAG( 'f', 't', 'y', 'p' ):
1117 case MKTAG( 's', 'k', 'i', 'p' ):
1118 offset = to_be32(p->buf) + offset;
1119 break;
1120 default:
1121 /* unrecognized tag */
1122 return 0;
1123 }
3ffe3793
FR
1124 }
1125 return 0;
c9a65ca8
FB
1126}
1127
a266644f 1128static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1129{
c9a65ca8 1130 MOVContext *mov = s->priv_data;
6cea494e 1131 ByteIOContext *pb = &s->pb;
684f44d9 1132 int i, j, nb, err;
6cea494e 1133 INT64 size;
6cea494e 1134
6cea494e 1135 mov->fc = s;
c9a65ca8
FB
1136#if 0
1137 /* XXX: I think we should auto detect */
1138 if(s->iformat->name[1] == 'p')
6cea494e 1139 mov->mp4 = 1;
c9a65ca8 1140#endif
6cea494e
ZK
1141 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1142 size = url_filesize(url_fileno(pb));
1143 else
1144 size = 0x7FFFFFFFFFFFFFFF;
1145
1146#ifdef DEBUG
684f44d9 1147 printf("filesz=%Ld\n", size);
6cea494e
ZK
1148#endif
1149
1150 /* check MOV header */
1151 err = parse_default(mov_default_parse_table, pb, 0L, 0LL, size, mov);
1152 if(err<0 || (!mov->found_moov || !mov->found_mdat)) {
1153 puts("header not found !!!");
1154 exit(1);
1155 }
1156#ifdef DEBUG
684f44d9 1157 printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1158#endif
1159 /* some cleanup : make sure we are on the mdat atom */
1160 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1161 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1162
1163 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1164
1165#ifdef DEBUG
684f44d9 1166 printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1167#endif
1168
1169#ifdef DEBUG
684f44d9 1170 printf("streams= %d\n", s->nb_streams);
6cea494e
ZK
1171#endif
1172 mov->total_streams = nb = s->nb_streams;
1173
1174#if 1
1175 for(i=0; i<s->nb_streams;) {
1176 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1ea4f593 1177 av_free(s->streams[i]);
6cea494e
ZK
1178 for(j=i+1; j<s->nb_streams; j++)
1179 s->streams[j-1] = s->streams[j];
1180 s->nb_streams--;
1181 } else
1182 i++;
1183 }
1184 for(i=0; i<s->nb_streams;i++) {
1185 MOVStreamContext *sc;
1186 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1187 sc->ffindex = i;
1188 sc->is_ff_stream = 1;
1189 }
1190#endif
1191#ifdef DEBUG
684f44d9 1192 printf("real streams= %d\n", s->nb_streams);
6cea494e
ZK
1193#endif
1194 return 0;
1195}
1196
1197/* Yes, this is ugly... I didn't write the specs of QT :p */
1198/* XXX:remove useless commented code sometime */
a266644f 1199static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e
ZK
1200{
1201 MOVContext *mov = s->priv_data;
0e7eed09 1202 MOVStreamContext *sc;
6cea494e 1203 INT64 offset = 0x0FFFFFFFFFFFFFFF;
684f44d9 1204 int i;
6cea494e
ZK
1205 int st_id = 0, size;
1206 size = 0x0FFFFFFF;
0e7eed09 1207
3ffe3793
FR
1208#ifdef MOV_SPLIT_CHUNKS
1209 if (mov->partial) {
1210
1211 int idx;
1212
1213 st_id = mov->partial - 1;
1214 idx = mov->streams[st_id]->sample_to_chunk_index;
1215 if (idx < 0) return 0;
1216 size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
1217
1218 mov->streams[st_id]->current_sample++;
1219 mov->streams[st_id]->left_in_chunk--;
1220
1221 if(mov->streams[st_id]->left_in_chunk <= 0)
1222 mov->partial = 0;
1223 offset = mov->next_chunk_offset;
1224 /* extract the sample */
1225
1226 goto readchunk;
1227 }
1228#endif
1229
6cea494e
ZK
1230again:
1231 for(i=0; i<mov->total_streams; i++) {
6cea494e
ZK
1232 if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
1233 && (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) {
6cea494e
ZK
1234 st_id = i;
1235 offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk];
1236 }
6cea494e
ZK
1237 }
1238 mov->streams[st_id]->next_chunk++;
1239 if(offset==0x0FFFFFFFFFFFFFFF)
1240 return -1;
1241
3ffe3793 1242 if(mov->next_chunk_offset < offset) { /* some meta data */
6cea494e 1243 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
3ffe3793
FR
1244 mov->next_chunk_offset = offset;
1245 }
1246
1247//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
6cea494e
ZK
1248 if(!mov->streams[st_id]->is_ff_stream) {
1249 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
3ffe3793 1250 mov->next_chunk_offset = offset;
6cea494e 1251 offset = 0x0FFFFFFFFFFFFFFF;
6cea494e
ZK
1252 goto again;
1253 }
6cea494e
ZK
1254
1255 /* now get the chunk size... */
1256
1257 for(i=0; i<mov->total_streams; i++) {
6cea494e
ZK
1258 if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
1259 && ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) {
6cea494e
ZK
1260 size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset;
1261 }
6cea494e 1262 }
3ffe3793
FR
1263#ifdef MOV_SPLIT_CHUNKS
1264 /* split chunks into samples */
1265 if(mov->streams[st_id]->sample_size == 0) {
1266 int idx;
1267 idx = mov->streams[st_id]->sample_to_chunk_index;
1268 if ((idx + 1 < mov->streams[st_id]->sample_to_chunk_sz)
1269 && (mov->streams[st_id]->next_chunk >= mov->streams[st_id]->sample_to_chunk[idx + 1].first))
1270 idx++;
1271 mov->streams[st_id]->sample_to_chunk_index = idx;
1272 if(idx >= 0 && mov->streams[st_id]->sample_to_chunk[idx].count != 1) {
1273 mov->partial = st_id+1;
1274 /* we'll have to get those samples before next chunk */
1275 mov->streams[st_id]->left_in_chunk = (mov->streams[st_id]->sample_to_chunk[idx].count) - 1;
1276 size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
1277 }
1278
1279 mov->streams[st_id]->current_sample++;
1280 }
1281#endif
1282
1283readchunk:
3ffe3793 1284//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
6cea494e
ZK
1285 if(size == 0x0FFFFFFF)
1286 size = mov->mdat_size + mov->mdat_offset - offset;
1287 if(size < 0)
1288 return -1;
1289 if(size == 0)
1290 return -1;
0e7eed09
FB
1291 url_fseek(&s->pb, offset, SEEK_SET);
1292 sc = mov->streams[st_id];
1293 if (sc->header_len > 0) {
1294 av_new_packet(pkt, size + sc->header_len);
1295 memcpy(pkt->data, sc->header_data, sc->header_len);
1296 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1297 /* free header */
1298 av_freep(&sc->header_data);
1299 sc->header_len = 0;
1300 } else {
1301 av_new_packet(pkt, size);
1302 get_buffer(&s->pb, pkt->data, pkt->size);
1303 }
1304 pkt->stream_index = sc->ffindex;
6cea494e
ZK
1305
1306#ifdef DEBUG
1307/*
1308 printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1309 for(i=0; i<8; i++)
1310 printf("%02x ", pkt->data[i]);
1311 for(i=0; i<8; i++)
1312 printf("%c ", (pkt->data[i]) & 0x7F);
1313 puts("");
1314*/
1315#endif
1316
1317 mov->next_chunk_offset = offset + size;
1318
1319 return 0;
1320}
1321
a266644f 1322static int mov_read_close(AVFormatContext *s)
6cea494e
ZK
1323{
1324 int i;
1325 MOVContext *mov = s->priv_data;
1326 for(i=0; i<mov->total_streams; i++)
1327 mov_free_stream_context(mov->streams[i]);
1328 for(i=0; i<s->nb_streams; i++)
4533d2d6 1329 av_freep(&s->streams[i]);
6cea494e
ZK
1330 return 0;
1331}
1332
c9a65ca8 1333static AVInputFormat mov_iformat = {
6cea494e 1334 "mov",
c9a65ca8
FB
1335 "QuickTime/MPEG4 format",
1336 sizeof(MOVContext),
1337 mov_probe,
6cea494e
ZK
1338 mov_read_header,
1339 mov_read_packet,
1340 mov_read_close,
1341};
1342
c9a65ca8
FB
1343int mov_init(void)
1344{
1345 av_register_input_format(&mov_iformat);
1346 return 0;
1347}