mpeg4 header parser clenup (needed for parsing of VOL header in avctx->extradata)
[libav.git] / libav / 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[] = {
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89/* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
90/* { CODEC_ID_JPEG, MKTAG('j', 'p', 'e', 'g') }, *//* JPEG */
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91/* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
92/* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
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93/* Graphics */
94/* Animation */
95/* Apple video */
96/* Kodak Photo CD */
3ffe3793 97 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
6cea494e 98 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
3ffe3793 99 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
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100 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
101/* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
102/* Sorenson video */
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103 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
104 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
3ffe3793 105 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
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106 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, /* OpenDiVX *//* yeah ! */
107 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
108/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
0147f198 109 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
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110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
111 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
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112 { 0, 0 },
113};
114
a266644f 115static const CodecTag mov_audio_tags[] = {
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116/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
117 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
118 { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') }, /* 8 bits */
119 { CODEC_ID_PCM_U8, 0x20776172 }, /* 8 bits unsigned */
120 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
121 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
122 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
0147f198 123 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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124
125 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
126 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
127 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
128/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
129/* MP4 tags */
130/* { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, *//* MPEG 4 AAC or audio ? */
131 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
132 { 0, 0 },
133};
134
135/* the QuickTime file format is quite convoluted...
136 * it has lots of index tables, each indexing something in another one...
137 * Here we just use what is needed to read the chunks
138 */
139
140typedef struct MOV_sample_to_chunk_tbl {
141 long first;
142 long count;
143 long id;
144} MOV_sample_to_chunk_tbl;
145
146typedef struct MOVStreamContext {
147 int ffindex; /* the ffmpeg stream id */
148 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
149 long next_chunk;
150 long chunk_count;
151 INT64 *chunk_offsets;
152 long sample_to_chunk_sz;
153 MOV_sample_to_chunk_tbl *sample_to_chunk;
3ffe3793 154 long sample_to_chunk_index;
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155 long sample_size;
156 long sample_count;
157 long *sample_sizes;
0147f198 158 long time_scale;
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159 long current_sample;
160 long left_in_chunk; /* how many samples before next chunk */
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161} MOVStreamContext;
162
163typedef struct MOVContext {
164 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) */
165 AVFormatContext *fc;
166 long time_scale;
167 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
168 int found_mdat; /* we suppose we have enough data to read the file */
169 INT64 mdat_size;
170 INT64 mdat_offset;
171 int total_streams;
172 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
173 * but we need the info to be able to skip data from those streams in the 'mdat' section
174 */
175 MOVStreamContext *streams[MAX_STREAMS];
176
177 INT64 next_chunk_offset;
3ffe3793 178 int partial; /* != 0 : there is still to read in the current chunk (=id of the stream + 1) */
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179} MOVContext;
180
181
182struct MOVParseTableEntry;
183
184/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
185
186/* those functions parse an atom */
187/* return code:
188 1: found what I wanted, exit
189 0: continue to parse next atom
190 -1: error occured, exit
191 */
684f44d9 192typedef int (*mov_parse_function)(const struct MOVParseTableEntry *parse_table,
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193 ByteIOContext *pb,
194 UINT32 atom_type,
195 INT64 atom_offset, /* after the size and type field (and eventually the extended size) */
196 INT64 atom_size, /* total size (excluding the size and type fields) */
197 void *param);
198
199/* links atom IDs to parse functions */
200typedef struct MOVParseTableEntry {
201 UINT32 type;
202 mov_parse_function func;
203} MOVParseTableEntry;
204
684f44d9 205static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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206{
207#ifdef DEBUG
208 print_atom("leaf", atom_type, atom_offset, atom_size);
209#endif
210 if(atom_size>1)
211 url_fskip(pb, atom_size);
212/* url_seek(pb, atom_offset+atom_size, SEEK_SET); */
213 return 0;
214}
215
216
684f44d9 217static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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218{
219 UINT32 type, foo=0;
220 UINT64 offset, size;
221 UINT64 total_size = 0;
222 int i;
223 int err = 0;
224 foo=0;
225#ifdef DEBUG
226 print_atom("default", atom_type, atom_offset, atom_size);
227 debug_indent++;
228#endif
229
230 offset = atom_offset;
231
232 if(atom_size < 0)
233 atom_size = 0x0FFFFFFFFFFFFFFF;
234 while((total_size < atom_size) && !url_feof(pb) && !err) {
235 size=atom_size;
236 type=0L;
237 if(atom_size >= 8) {
238 size = get_be32(pb);
239 type = get_le32(pb);
240 }
241 total_size += 8;
242 offset+=8;
243// printf("type: %08lx sz: %08lx", type, size);
244 if(size == 1) { /* 64 bit extended size */
245 size = get_be64(pb);
246 offset+=8;
247 total_size+=8;
248 size-=8;
249 }
250 if(size == 0)
251 size = atom_size - total_size;
252 size-=8;
253 for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++);
254
255// printf(" i=%ld\n", i);
684f44d9 256 if (parse_table[i].type == 0) { /* skip leaf atoms data */
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257// url_seek(pb, atom_offset+atom_size, SEEK_SET);
258#ifdef DEBUG
259 print_atom("unknown", type, offset, size);
260#endif
261 url_fskip(pb, size);
262 } else
263 err = (parse_table[i].func)(parse_table, pb, type, offset, size, param);
264
265 offset+=size;
266 total_size+=size;
267 }
268
269#ifdef DEBUG
270 debug_indent--;
271#endif
272 return err;
273}
274
684f44d9 275static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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276{
277 MOVContext *c;
278#ifdef DEBUG
279 print_atom("mvhd", atom_type, atom_offset, atom_size);
280#endif
281 c = (MOVContext *)param;
282
283 get_byte(pb); /* version */
284 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
285
286 get_be32(pb); /* creation time */
287 get_be32(pb); /* modification time */
288 c->time_scale = get_be32(pb); /* time scale */
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289#ifdef DEBUG
290 printf("time scale = %li\n", c->time_scale);
291#endif
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292 get_be32(pb); /* duration */
293 get_be32(pb); /* preferred scale */
294
295 get_be16(pb); /* preferred volume */
296
297 url_fskip(pb, 10); /* reserved */
298
299 url_fskip(pb, 36); /* display matrix */
300
301 get_be32(pb); /* preview time */
302 get_be32(pb); /* preview duration */
303 get_be32(pb); /* poster time */
304 get_be32(pb); /* selection time */
305 get_be32(pb); /* selection duration */
306 get_be32(pb); /* current time */
307 get_be32(pb); /* next track ID */
308
309 return 0;
310}
311
312/* this atom should contain all header atoms */
684f44d9 313static int parse_moov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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314{
315 int err;
316 MOVContext *c;
317#ifdef DEBUG
318 print_atom("moov", atom_type, atom_offset, atom_size);
319#endif
320 c = (MOVContext *)param;
321
322 err = parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
323 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
324 /* so we don't parse the whole file if over a network */
325 c->found_moov=1;
326 if(c->found_mdat)
327 return 1; /* found both, just go */
328 return 0; /* now go for mdat */
329}
330
331/* this atom contains actual media data */
684f44d9 332static int parse_mdat(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e 333{
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334 MOVContext *c;
335#ifdef DEBUG
336 print_atom("mdat", atom_type, atom_offset, atom_size);
337#endif
338 c = (MOVContext *)param;
339
340 if(atom_size == 0) /* wrong one (MP4) */
341 return 0;
342 c->found_mdat=1;
343 c->mdat_offset = atom_offset;
344 c->mdat_size = atom_size;
345 if(c->found_moov)
346 return 1; /* found both, just go */
347 url_fskip(pb, atom_size);
348 return 0; /* now go for moov */
349}
350
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351/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
352/* like the files created with Adobe Premiere 5.0, for samples see */
353/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
354static int parse_wide(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
355{
356 int err;
357 UINT32 type;
358#ifdef DEBUG
359 print_atom("wide", atom_type, atom_offset, atom_size);
360 debug_indent++;
361#endif
362 if (atom_size < 8)
363 return 0; /* continue */
364 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
365 url_fskip(pb, atom_size - 4);
366 return 0;
367 }
368 type = get_le32(pb);
369 if (type != MKTAG('m', 'd', 'a', 't')) {
370 url_fskip(pb, atom_size - 8);
371 return 0;
372 }
373 err = parse_mdat(parse_table, pb, type, atom_offset + 8, atom_size - 8, param);
374#ifdef DEBUG
375 debug_indent--;
376#endif
377 return err;
378}
379
684f44d9 380static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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381{
382 MOVContext *c;
383 AVStream *st;
384 MOVStreamContext *sc;
385#ifdef DEBUG
386 print_atom("trak", atom_type, atom_offset, atom_size);
387#endif
388
389 c = (MOVContext *)param;
3ffe3793 390 st = av_new_stream(c->fc, c->fc->nb_streams);
1ea4f593 391 if (!st) return -2;
1ea4f593 392 sc = av_malloc(sizeof(MOVStreamContext));
3ffe3793 393 sc->sample_to_chunk_index = -1;
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394 st->priv_data = sc;
395 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
3ffe3793 396 c->streams[c->fc->nb_streams-1] = sc;
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397 return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
398}
399
684f44d9 400static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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401{
402 MOVContext *c;
403 AVStream *st;
404#ifdef DEBUG
405 print_atom("tkhd", atom_type, atom_offset, atom_size);
406#endif
407
408 c = (MOVContext *)param;
409 st = c->fc->streams[c->fc->nb_streams-1];
410
411 get_byte(pb); /* version */
412
413 get_byte(pb); get_byte(pb);
414 get_byte(pb); /* flags */
415 /*
416 MOV_TRACK_ENABLED 0x0001
417 MOV_TRACK_IN_MOVIE 0x0002
418 MOV_TRACK_IN_PREVIEW 0x0004
419 MOV_TRACK_IN_POSTER 0x0008
420 */
421
422 get_be32(pb); /* creation time */
423 get_be32(pb); /* modification time */
424 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
425 get_be32(pb); /* reserved */
426 get_be32(pb); /* duration */
427 get_be32(pb); /* reserved */
428 get_be32(pb); /* reserved */
429
430 get_be16(pb); /* layer */
431 get_be16(pb); /* alternate group */
432 get_be16(pb); /* volume */
433 get_be16(pb); /* reserved */
434
435 url_fskip(pb, 36); /* display matrix */
436
437 /* those are fixed-point */
438 st->codec.width = get_be32(pb) >> 16; /* track width */
439 st->codec.height = get_be32(pb) >> 16; /* track height */
440
441 return 0;
442}
443
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444static int parse_mdhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
445{
446 MOVContext *c;
447 AVStream *st;
448#ifdef DEBUG
449 print_atom("mdhd", atom_type, atom_offset, atom_size);
450#endif
451
452 c = (MOVContext *)param;
453 st = c->fc->streams[c->fc->nb_streams-1];
454
455 get_byte(pb); /* version */
456
457 get_byte(pb); get_byte(pb);
458 get_byte(pb); /* flags */
459
460 get_be32(pb); /* creation time */
461 get_be32(pb); /* modification time */
462
463 c->streams[c->total_streams]->time_scale = get_be32(pb);
464
465#ifdef DEBUG
466 printf("track[%i].time_scale = %li\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
467#endif
468 get_be32(pb); /* duration */
469
470 get_be16(pb); /* language */
471 get_be16(pb); /* quality */
472
473 return 0;
474}
475
684f44d9 476static int parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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477{
478 MOVContext *c;
3ffe3793 479 int len = 0;
c9a65ca8 480 char *buf;
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481 UINT32 type;
482 AVStream *st;
483 UINT32 ctype;
484#ifdef DEBUG
485 print_atom("hdlr", atom_type, atom_offset, atom_size);
486#endif
487 c = (MOVContext *)param;
488 st = c->fc->streams[c->fc->nb_streams-1];
489
490 get_byte(pb); /* version */
491 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
492
493 /* component type */
494 ctype = get_le32(pb);
495 type = get_le32(pb); /* component subtype */
496
497#ifdef DEBUG
684f44d9 498 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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499 printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
500#endif
501#ifdef DEBUG
502/* XXX: yeah this is ugly... */
503 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
504 if(type == MKTAG('v', 'i', 'd', 'e'))
505 puts("hdlr: vide");
506 else if(type == MKTAG('s', 'o', 'u', 'n'))
507 puts("hdlr: soun");
508 } else if(ctype == 0) { /* MP4 */
509 if(type == MKTAG('v', 'i', 'd', 'e'))
510 puts("hdlr: vide");
511 else if(type == MKTAG('s', 'o', 'u', 'n'))
512 puts("hdlr: soun");
513 else if(type == MKTAG('o', 'd', 's', 'm'))
514 puts("hdlr: odsm");
515 else if(type == MKTAG('s', 'd', 's', 'm'))
516 puts("hdlr: sdsm");
517 } else puts("hdlr: meta");
518#endif
519
520 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
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521 /* helps parsing the string hereafter... */
522 c->mp4 = 0;
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523 if(type == MKTAG('v', 'i', 'd', 'e'))
524 st->codec.codec_type = CODEC_TYPE_VIDEO;
525 else if(type == MKTAG('s', 'o', 'u', 'n'))
526 st->codec.codec_type = CODEC_TYPE_AUDIO;
527 } else if(ctype == 0) { /* MP4 */
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528 /* helps parsing the string hereafter... */
529 c->mp4 = 1;
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530 if(type == MKTAG('v', 'i', 'd', 'e'))
531 st->codec.codec_type = CODEC_TYPE_VIDEO;
532 else if(type == MKTAG('s', 'o', 'u', 'n'))
533 st->codec.codec_type = CODEC_TYPE_AUDIO;
534 }
535 get_be32(pb); /* component manufacture */
536 get_be32(pb); /* component flags */
537 get_be32(pb); /* component flags mask */
538
539 if(atom_size <= 24)
540 return 0; /* nothing left to read */
541 /* XXX: MP4 uses a C string, not a pascal one */
542 /* component name */
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FR
543
544 if(c->mp4) {
545 /* .mp4: C string */
546 while(get_byte(pb) && (++len < (atom_size - 24)));
547 } else {
548 /* .mov: PASCAL string */
549 len = get_byte(pb);
550 buf = av_malloc(len+1);
551 get_buffer(pb, buf, len);
552 buf[len] = '\0';
553#ifdef DEBUG
554 printf("**buf='%s'\n", buf);
555#endif
556 av_free(buf);
557 }
558#if 0
c9a65ca8
FB
559 len = get_byte(pb);
560 /* XXX: use a better heuristic */
561 if(len < 32) {
562 /* assume that it is a Pascal like string */
563 buf = av_malloc(len+1);
564 get_buffer(pb, buf, len);
565 buf[len] = '\0';
6cea494e 566#ifdef DEBUG
c9a65ca8 567 printf("**buf='%s'\n", buf);
6cea494e 568#endif
c9a65ca8 569 av_free(buf);
6cea494e 570 } else {
c9a65ca8
FB
571 /* MP4 string */
572 for(;;) {
573 if (len == 0)
574 break;
575 len = get_byte(pb);
6cea494e
ZK
576 }
577 }
0147f198 578#endif
6cea494e
ZK
579
580 return 0;
581}
582
684f44d9 583static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
584{
585 MOVContext *c;
586 int entries, size, samp_sz, frames_per_sample;
6cea494e
ZK
587 UINT32 format;
588 AVStream *st;
589#ifdef DEBUG
590 print_atom("stsd", atom_type, atom_offset, atom_size);
591#endif
592 c = (MOVContext *)param;
593 st = c->fc->streams[c->fc->nb_streams-1];
594
595 get_byte(pb); /* version */
596 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
597
598
599 entries = get_be32(pb);
600
601 while(entries--) {
602 size = get_be32(pb); /* size */
603 format = get_le32(pb); /* data format */
604
605 get_be32(pb); /* reserved */
606 get_be16(pb); /* reserved */
607 get_be16(pb); /* index */
608/* if(format == MKTAG('m', 'p', '4', 'v')) */
609/* st->codec.codec_type=CODEC_TYPE_VIDEO; *//* force things (XXX: was this for .mp4 ?) */
610 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
611 st->codec.codec_tag = format;
612 st->codec.codec_id = codec_get_id(mov_video_tags, format);
613 get_be16(pb); /* version */
614 get_be16(pb); /* revision level */
615 get_be32(pb); /* vendor */
616 get_be32(pb); /* temporal quality */
617 get_be32(pb); /* spacial quality */
618 st->codec.width = get_be16(pb); /* width */
619 st->codec.height = get_be16(pb); /* height */
620 get_be32(pb); /* horiz resolution */
621 get_be32(pb); /* vert resolution */
622 get_be32(pb); /* data size, always 0 */
623 frames_per_sample = get_be16(pb); /* frame per samples */
624#ifdef DEBUG
684f44d9 625 printf("frames/samples = %d\n", frames_per_sample);
6cea494e
ZK
626#endif
627 url_fskip(pb, 32); /* codec name */
628
629 get_be16(pb); /* depth */
630 get_be16(pb); /* colortable id */
631 get_be16(pb); /* */
632 get_be16(pb); /* */
633
634 st->codec.sample_rate = 25 * FRAME_RATE_BASE;
635
636 if(size > 16)
637 url_fskip(pb, size-(16+24+18+32));
638 } else {
639 st->codec.codec_tag = format;
640
641 get_be16(pb); /* version */
642 get_be16(pb); /* revision level */
643 get_be32(pb); /* vendor */
644
645 st->codec.channels = get_be16(pb);/* channel count */
646 samp_sz = get_be16(pb); /* sample size */
647#ifdef DEBUG
648 if(samp_sz != 16)
649 puts("!!! stsd: audio sample size is not 16 bit !");
650#endif
651 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
652 /* handle specific s8 codec */
653 if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8)
654 st->codec.codec_id = CODEC_ID_PCM_S8;
655
656 get_be16(pb); /* compression id = 0*/
657 get_be16(pb); /* packet size = 0 */
658
659 st->codec.sample_rate = ((get_be32(pb) >> 16));
660 st->codec.bit_rate = 0;
661
662 /* this is for .mp4 files */
663 if(format == MKTAG('m', 'p', '4', 'v')) { /* XXX */
664 st->codec.codec_type=CODEC_TYPE_VIDEO; /* force things */
665 st->codec.codec_id = CODEC_ID_MPEG4;
0147f198 666 st->codec.frame_rate = 25 * FRAME_RATE_BASE;
6cea494e
ZK
667 st->codec.bit_rate = 100000;
668 }
3ffe3793
FR
669// if(format == MKTAG('m', 'p', '4', 'a')) { /* XXX */
670// st->codec.codec_type=CODEC_TYPE_AUDIO; /* force things */
671// st->codec.codec_id = CODEC_ID_AAC;
672//// st->codec.frame_rate = 25 * FRAME_RATE_BASE;
673//// st->codec.bit_rate = 100000;
674// }
6cea494e
ZK
675
676#if 0
677
678 get_be16(pb); get_be16(pb); /* */
679 get_be16(pb); /* */
680 get_be16(pb); /* */
681 get_be16(pb); /* */
682 get_be16(pb); /* */
683#endif
684 if(size > 16)
685 url_fskip(pb, size-(16+20));
686 }
687#ifdef DEBUG
688 printf("4CC= %c%c%c%c\n", *((char *)&format), ((char *)&format)[1], ((char *)&format)[2], ((char *)&format)[3]);
689#endif
690 }
691/*
692 if(len) {
1ea4f593 693 buf = av_malloc(len+1);
6cea494e
ZK
694 get_buffer(pb, buf, len);
695 buf[len] = '\0';
696 puts(buf);
1ea4f593 697 av_free(buf);
6cea494e
ZK
698 }
699*/
700 return 0;
701}
702
684f44d9 703static int parse_stco(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
704{
705 MOVContext *c;
706 int entries, i;
707 AVStream *st;
708 MOVStreamContext *sc;
709#ifdef DEBUG
710 print_atom("stco", atom_type, atom_offset, atom_size);
711#endif
712 c = (MOVContext *)param;
713 st = c->fc->streams[c->fc->nb_streams-1];
714 sc = (MOVStreamContext *)st->priv_data;
715
716 get_byte(pb); /* version */
717 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
718
719 entries = get_be32(pb);
720 sc->chunk_count = entries;
1ea4f593 721 sc->chunk_offsets = av_malloc(entries * sizeof(INT64));
6cea494e
ZK
722 if(atom_type == MKTAG('s', 't', 'c', 'o')) {
723 for(i=0; i<entries; i++) {
724 sc->chunk_offsets[i] = get_be32(pb);
725 /*printf("chunk offset=%ld\n", sc->chunk_offsets[i]);*/
726 }
727 } else if(atom_type == MKTAG('c', 'o', '6', '4')) {
728 for(i=0; i<entries; i++) {
729 sc->chunk_offsets[i] = get_be64(pb);
730 /*printf("chunk offset=%ld\n", sc->chunk_offsets[i]);*/
731 }
732 } else
733 return -1;
734 return 0;
735}
736
684f44d9 737static int parse_stsc(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
738{
739 MOVContext *c;
740 int entries, i;
741 AVStream *st;
742 MOVStreamContext *sc;
743#ifdef DEBUG
744 print_atom("stsc", atom_type, atom_offset, atom_size);
745#endif
746 c = (MOVContext *)param;
747 st = c->fc->streams[c->fc->nb_streams-1];
748 sc = (MOVStreamContext *)st->priv_data;
749
750 get_byte(pb); /* version */
751 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
752
753 entries = get_be32(pb);
3ffe3793
FR
754#ifdef DEBUG
755printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
756#endif
6cea494e 757 sc->sample_to_chunk_sz = entries;
1ea4f593 758 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
6cea494e
ZK
759 for(i=0; i<entries; i++) {
760 sc->sample_to_chunk[i].first = get_be32(pb);
761 sc->sample_to_chunk[i].count = get_be32(pb);
762 sc->sample_to_chunk[i].id = get_be32(pb);
763#ifdef DEBUG
764/* 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); */
765#endif
766 }
767 return 0;
768}
769
684f44d9 770static int parse_stsz(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
6cea494e
ZK
771{
772 MOVContext *c;
773 int entries, i;
774 AVStream *st;
775 MOVStreamContext *sc;
776#ifdef DEBUG
777 print_atom("stsz", atom_type, atom_offset, atom_size);
778#endif
779 c = (MOVContext *)param;
780 st = c->fc->streams[c->fc->nb_streams-1];
781 sc = (MOVStreamContext *)st->priv_data;
782
783 get_byte(pb); /* version */
784 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
785
786 sc->sample_size = get_be32(pb);
787 entries = get_be32(pb);
788 sc->sample_count = entries;
0147f198 789#ifdef DEBUG
6cea494e 790 printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
0147f198 791#endif
6cea494e
ZK
792 if(sc->sample_size)
793 return 0; /* there isn't any table following */
1ea4f593 794 sc->sample_sizes = av_malloc(entries * sizeof(long));
6cea494e
ZK
795 for(i=0; i<entries; i++) {
796 sc->sample_sizes[i] = get_be32(pb);
797#ifdef DEBUG
798/* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
799#endif
800 }
801 return 0;
802}
803
0147f198
FR
804static int parse_stts(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
805{
806 MOVContext *c;
807 int entries, i;
808 AVStream *st;
809 MOVStreamContext *sc;
810#ifdef DEBUG
811 print_atom("stts", atom_type, atom_offset, atom_size);
812#endif
813 c = (MOVContext *)param;
814 st = c->fc->streams[c->fc->nb_streams-1];
815 sc = (MOVStreamContext *)st->priv_data;
816
817 get_byte(pb); /* version */
818 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
819 entries = get_be32(pb);
3ffe3793
FR
820#ifdef DEBUG
821printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
822#endif
0147f198
FR
823 for(i=0; i<entries; i++) {
824 int sample_duration;
825
826 get_be32(pb);
827 sample_duration = get_be32(pb);
828
829 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
3ffe3793
FR
830 st->codec.frame_rate = FRAME_RATE_BASE * c->streams[c->total_streams]->time_scale;
831 if (sample_duration)
832 st->codec.frame_rate /= sample_duration;
0147f198 833#ifdef DEBUG
3ffe3793 834 printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
0147f198
FR
835#endif
836 }
837 }
838 return 0;
839}
840
841#ifdef CONFIG_ZLIB
842static int null_read_packet(void *opaque, UINT8 *buf, int buf_size)
843{
844 return -1;
845}
846
847static int parse_cmov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
848{
849 MOVContext *c;
850 ByteIOContext ctx;
851 char *cmov_data;
852 unsigned char *moov_data; /* uncompressed data */
853 long cmov_len, moov_len;
854 int ret;
855#ifdef DEBUG
856 print_atom("cmov", atom_type, atom_offset, atom_size);
857#endif
858 c = (MOVContext *)param;
859
860 get_be32(pb); /* dcom atom */
861 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
862 return -1;
863 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
864 puts("unknown compression for cmov atom !");
865 return -1;
866 }
867 get_be32(pb); /* cmvd atom */
868 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
869 return -1;
870 moov_len = get_be32(pb); /* uncompressed size */
871 cmov_len = atom_size - 6 * 4;
872
873 cmov_data = av_malloc(cmov_len);
874 if (!cmov_data)
875 return -1;
876 moov_data = av_malloc(moov_len);
877 if (!moov_data) {
878 av_free(cmov_data);
879 return -1;
880 }
881 get_buffer(pb, cmov_data, cmov_len);
882 if(uncompress (moov_data, &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
883 return -1;
884 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
885 return -1;
886 ctx.buf_end = ctx.buffer + moov_len;
887 ret = parse_default(parse_table, &ctx, MKTAG( 'm', 'o', 'o', 'v' ), 0, moov_len, param);
888 av_free(moov_data);
889 av_free(cmov_data);
890 return ret;
891}
892#endif
893
6cea494e
ZK
894static const MOVParseTableEntry mov_default_parse_table[] = {
895/* mp4 atoms */
896{ MKTAG( 'm', 'p', '4', 'a' ), parse_default },
897{ MKTAG( 'c', 'o', '6', '4' ), parse_stco },
898{ MKTAG( 's', 't', 'c', 'o' ), parse_stco },
899{ MKTAG( 'c', 'r', 'h', 'd' ), parse_default },
900{ MKTAG( 'c', 't', 't', 's' ), parse_leaf },
901{ MKTAG( 'c', 'p', 'r', 't' ), parse_default },
902{ MKTAG( 'u', 'r', 'l', ' ' ), parse_leaf },
903{ MKTAG( 'u', 'r', 'n', ' ' ), parse_leaf },
904{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default },
905{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf },
906{ MKTAG( 's', 't', 'd', 'p' ), parse_default },
907{ MKTAG( 'e', 's', 'd', 's' ), parse_default },
908{ MKTAG( 'e', 'd', 't', 's' ), parse_default },
909{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf },
910{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default },
911{ MKTAG( 'f', 'r', 'e', 'e' ), parse_leaf },
912{ MKTAG( 'h', 'd', 'l', 'r' ), parse_hdlr },
3ffe3793 913{ MKTAG( 'h', 'm', 'h', 'd' ), parse_leaf },
6cea494e
ZK
914{ MKTAG( 'h', 'i', 'n', 't' ), parse_leaf },
915{ MKTAG( 'n', 'm', 'h', 'd' ), parse_leaf },
916{ MKTAG( 'm', 'p', '4', 's' ), parse_default },
917{ MKTAG( 'm', 'd', 'i', 'a' ), parse_default },
918{ MKTAG( 'm', 'd', 'a', 't' ), parse_mdat },
0147f198 919{ MKTAG( 'm', 'd', 'h', 'd' ), parse_mdhd },
6cea494e
ZK
920{ MKTAG( 'm', 'i', 'n', 'f' ), parse_default },
921{ MKTAG( 'm', 'o', 'o', 'v' ), parse_moov },
922{ MKTAG( 'm', 'v', 'h', 'd' ), parse_mvhd },
923{ MKTAG( 'i', 'o', 'd', 's' ), parse_leaf },
924{ MKTAG( 'o', 'd', 'h', 'd' ), parse_default },
925{ MKTAG( 'm', 'p', 'o', 'd' ), parse_leaf },
926{ MKTAG( 's', 't', 's', 'd' ), parse_stsd },
927{ MKTAG( 's', 't', 's', 'z' ), parse_stsz },
928{ MKTAG( 's', 't', 'b', 'l' ), parse_default },
929{ MKTAG( 's', 't', 's', 'c' ), parse_stsc },
930{ MKTAG( 's', 'd', 'h', 'd' ), parse_default },
931{ MKTAG( 's', 't', 's', 'h' ), parse_default },
932{ MKTAG( 's', 'k', 'i', 'p' ), parse_default },
933{ MKTAG( 's', 'm', 'h', 'd' ), parse_leaf },
934{ MKTAG( 'd', 'p', 'n', 'd' ), parse_leaf },
935{ MKTAG( 's', 't', 's', 's' ), parse_leaf },
0147f198 936{ MKTAG( 's', 't', 't', 's' ), parse_stts },
6cea494e
ZK
937{ MKTAG( 't', 'r', 'a', 'k' ), parse_trak },
938{ MKTAG( 't', 'k', 'h', 'd' ), parse_tkhd },
939{ MKTAG( 't', 'r', 'e', 'f' ), parse_default }, /* not really */
940{ MKTAG( 'u', 'd', 't', 'a' ), parse_leaf },
941{ MKTAG( 'v', 'm', 'h', 'd' ), parse_leaf },
942{ MKTAG( 'm', 'p', '4', 'v' ), parse_default },
943/* extra mp4 */
944{ MKTAG( 'M', 'D', 'E', 'S' ), parse_leaf },
945/* QT atoms */
946{ MKTAG( 'c', 'h', 'a', 'p' ), parse_leaf },
947{ MKTAG( 'c', 'l', 'i', 'p' ), parse_default },
948{ MKTAG( 'c', 'r', 'g', 'n' ), parse_leaf },
949{ MKTAG( 'k', 'm', 'a', 't' ), parse_leaf },
950{ MKTAG( 'm', 'a', 't', 't' ), parse_default },
951{ MKTAG( 'r', 'd', 'r', 'f' ), parse_leaf },
952{ MKTAG( 'r', 'm', 'd', 'a' ), parse_default },
953{ MKTAG( 'r', 'm', 'd', 'r' ), parse_leaf },
954//{ MKTAG( 'r', 'm', 'q', 'u' ), parse_leaf },
955{ MKTAG( 'r', 'm', 'r', 'a' ), parse_default },
956{ MKTAG( 's', 'c', 'p', 't' ), parse_leaf },
957{ MKTAG( 's', 'y', 'n', 'c' ), parse_leaf },
958{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf },
959{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf },
3ffe3793 960{ MKTAG( 'w', 'i', 'd', 'e' ), parse_wide }, /* place holder */
0147f198
FR
961#ifdef CONFIG_ZLIB
962{ MKTAG( 'c', 'm', 'o', 'v' ), parse_cmov },
963#else
964{ MKTAG( 'c', 'm', 'o', 'v' ), parse_leaf },
965#endif
6cea494e
ZK
966{ 0L, parse_leaf }
967};
968
969static void mov_free_stream_context(MOVStreamContext *sc)
970{
971 if(sc) {
1ea4f593
FB
972 av_free(sc->chunk_offsets);
973 av_free(sc->sample_to_chunk);
974 av_free(sc);
6cea494e
ZK
975 }
976}
977
c9a65ca8
FB
978/* XXX: is it suffisant ? */
979static int mov_probe(AVProbeData *p)
980{
3ffe3793
FR
981 int offset;
982
c9a65ca8
FB
983 /* check file header */
984 if (p->buf_size <= 12)
985 return 0;
986 if ((p->buf[4] == 'm' && p->buf[5] == 'o' &&
987 p->buf[6] == 'o' && p->buf[7] == 'v') ||
0147f198
FR
988 (p->buf[4] == 'w' && p->buf[5] == 'i' &&
989 p->buf[6] == 'd' && p->buf[7] == 'e') ||
990 (p->buf[4] == 'f' && p->buf[5] == 'r' &&
991 p->buf[6] == 'e' && p->buf[7] == 'e') ||
c9a65ca8
FB
992 (p->buf[4] == 'm' && p->buf[5] == 'd' &&
993 p->buf[6] == 'a' && p->buf[7] == 't'))
994 return AVPROBE_SCORE_MAX;
3ffe3793
FR
995 if (p->buf[4] == 'f' && p->buf[5] == 't' &&
996 p->buf[6] == 'y' && p->buf[7] == 'p') {
997 offset = p->buf[0]; offset <<= 8;
998 offset |= p->buf[1]; offset <<= 8;
999 offset |= p->buf[2]; offset <<= 8;
1000 offset |= p->buf[3];
1001 if (offset > p->buf_size)
1002 return 0;
1003 if ((p->buf[offset+4] == 'm' && p->buf[offset+5] == 'o' &&
1004 p->buf[offset+6] == 'o' && p->buf[offset+7] == 'v') ||
1005 (p->buf[offset+4] == 'w' && p->buf[offset+5] == 'i' &&
1006 p->buf[offset+6] == 'd' && p->buf[offset+7] == 'e') ||
1007 (p->buf[offset+4] == 'm' && p->buf[offset+5] == 'd' &&
1008 p->buf[offset+6] == 'a' && p->buf[offset+7] == 't'))
1009 return AVPROBE_SCORE_MAX;
1010
1011 }
1012 return 0;
c9a65ca8
FB
1013}
1014
a266644f 1015static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1016{
c9a65ca8 1017 MOVContext *mov = s->priv_data;
6cea494e 1018 ByteIOContext *pb = &s->pb;
684f44d9 1019 int i, j, nb, err;
6cea494e 1020 INT64 size;
6cea494e 1021
6cea494e 1022 mov->fc = s;
c9a65ca8
FB
1023#if 0
1024 /* XXX: I think we should auto detect */
1025 if(s->iformat->name[1] == 'p')
6cea494e 1026 mov->mp4 = 1;
c9a65ca8 1027#endif
6cea494e
ZK
1028 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1029 size = url_filesize(url_fileno(pb));
1030 else
1031 size = 0x7FFFFFFFFFFFFFFF;
1032
1033#ifdef DEBUG
684f44d9 1034 printf("filesz=%Ld\n", size);
6cea494e
ZK
1035#endif
1036
1037 /* check MOV header */
1038 err = parse_default(mov_default_parse_table, pb, 0L, 0LL, size, mov);
1039 if(err<0 || (!mov->found_moov || !mov->found_mdat)) {
1040 puts("header not found !!!");
1041 exit(1);
1042 }
1043#ifdef DEBUG
684f44d9 1044 printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1045#endif
1046 /* some cleanup : make sure we are on the mdat atom */
1047 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1048 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1049
1050 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1051
1052#ifdef DEBUG
684f44d9 1053 printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1054#endif
1055
1056#ifdef DEBUG
684f44d9 1057 printf("streams= %d\n", s->nb_streams);
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1058#endif
1059 mov->total_streams = nb = s->nb_streams;
1060
1061#if 1
1062 for(i=0; i<s->nb_streams;) {
1063 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1ea4f593 1064 av_free(s->streams[i]);
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1065 for(j=i+1; j<s->nb_streams; j++)
1066 s->streams[j-1] = s->streams[j];
1067 s->nb_streams--;
1068 } else
1069 i++;
1070 }
1071 for(i=0; i<s->nb_streams;i++) {
1072 MOVStreamContext *sc;
1073 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1074 sc->ffindex = i;
1075 sc->is_ff_stream = 1;
1076 }
1077#endif
1078#ifdef DEBUG
684f44d9 1079 printf("real streams= %d\n", s->nb_streams);
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1080#endif
1081 return 0;
1082}
1083
1084/* Yes, this is ugly... I didn't write the specs of QT :p */
1085/* XXX:remove useless commented code sometime */
a266644f 1086static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
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1087{
1088 MOVContext *mov = s->priv_data;
1089 INT64 offset = 0x0FFFFFFFFFFFFFFF;
684f44d9 1090 int i;
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1091 int st_id = 0, size;
1092 size = 0x0FFFFFFF;
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1093
1094#ifdef MOV_SPLIT_CHUNKS
1095 if (mov->partial) {
1096
1097 int idx;
1098
1099 st_id = mov->partial - 1;
1100 idx = mov->streams[st_id]->sample_to_chunk_index;
1101 if (idx < 0) return 0;
1102 size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
1103
1104 mov->streams[st_id]->current_sample++;
1105 mov->streams[st_id]->left_in_chunk--;
1106
1107 if(mov->streams[st_id]->left_in_chunk <= 0)
1108 mov->partial = 0;
1109 offset = mov->next_chunk_offset;
1110 /* extract the sample */
1111
1112 goto readchunk;
1113 }
1114#endif
1115
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1116again:
1117 for(i=0; i<mov->total_streams; i++) {
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1118 if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
1119 && (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) {
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1120 st_id = i;
1121 offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk];
1122 }
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1123 }
1124 mov->streams[st_id]->next_chunk++;
1125 if(offset==0x0FFFFFFFFFFFFFFF)
1126 return -1;
1127
3ffe3793 1128 if(mov->next_chunk_offset < offset) { /* some meta data */
6cea494e 1129 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
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1130 mov->next_chunk_offset = offset;
1131 }
1132
1133//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
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1134 if(!mov->streams[st_id]->is_ff_stream) {
1135 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
3ffe3793 1136 mov->next_chunk_offset = offset;
6cea494e 1137 offset = 0x0FFFFFFFFFFFFFFF;
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1138 goto again;
1139 }
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1140
1141 /* now get the chunk size... */
1142
1143 for(i=0; i<mov->total_streams; i++) {
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1144 if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
1145 && ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) {
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1146 size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset;
1147 }
6cea494e 1148 }
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1149#ifdef MOV_SPLIT_CHUNKS
1150 /* split chunks into samples */
1151 if(mov->streams[st_id]->sample_size == 0) {
1152 int idx;
1153 idx = mov->streams[st_id]->sample_to_chunk_index;
1154 if ((idx + 1 < mov->streams[st_id]->sample_to_chunk_sz)
1155 && (mov->streams[st_id]->next_chunk >= mov->streams[st_id]->sample_to_chunk[idx + 1].first))
1156 idx++;
1157 mov->streams[st_id]->sample_to_chunk_index = idx;
1158 if(idx >= 0 && mov->streams[st_id]->sample_to_chunk[idx].count != 1) {
1159 mov->partial = st_id+1;
1160 /* we'll have to get those samples before next chunk */
1161 mov->streams[st_id]->left_in_chunk = (mov->streams[st_id]->sample_to_chunk[idx].count) - 1;
1162 size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
1163 }
1164
1165 mov->streams[st_id]->current_sample++;
1166 }
1167#endif
1168
1169readchunk:
1170
1171//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
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1172 if(size == 0x0FFFFFFF)
1173 size = mov->mdat_size + mov->mdat_offset - offset;
1174 if(size < 0)
1175 return -1;
1176 if(size == 0)
1177 return -1;
1178 av_new_packet(pkt, size);
1179 pkt->stream_index = mov->streams[st_id]->ffindex;
1180
1181 get_buffer(&s->pb, pkt->data, pkt->size);
1182
1183#ifdef DEBUG
1184/*
1185 printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1186 for(i=0; i<8; i++)
1187 printf("%02x ", pkt->data[i]);
1188 for(i=0; i<8; i++)
1189 printf("%c ", (pkt->data[i]) & 0x7F);
1190 puts("");
1191*/
1192#endif
1193
1194 mov->next_chunk_offset = offset + size;
1195
1196 return 0;
1197}
1198
a266644f 1199static int mov_read_close(AVFormatContext *s)
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1200{
1201 int i;
1202 MOVContext *mov = s->priv_data;
1203 for(i=0; i<mov->total_streams; i++)
1204 mov_free_stream_context(mov->streams[i]);
1205 for(i=0; i<s->nb_streams; i++)
1ea4f593 1206 av_free(s->streams[i]);
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1207 return 0;
1208}
1209
c9a65ca8 1210static AVInputFormat mov_iformat = {
6cea494e 1211 "mov",
c9a65ca8
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1212 "QuickTime/MPEG4 format",
1213 sizeof(MOVContext),
1214 mov_probe,
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1215 mov_read_header,
1216 mov_read_packet,
1217 mov_read_close,
1218};
1219
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1220int mov_init(void)
1221{
1222 av_register_input_format(&mov_iformat);
1223 return 0;
1224}