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AVI: support WAVEFORMATEXTENSIBLE for audio
[vlc/vlc-skelet.git] / modules / demux / avi / avi.c
blob03b0fe2d1f975f73312155e23d14cb2cd7fa949c
1 /*****************************************************************************
2 * avi.c : AVI file Stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2009 the VideoLAN team
5 * $Id$
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
22
23 /*****************************************************************************
24 * Preamble
25 *****************************************************************************/
26
27 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
30 #include <assert.h>
31
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_demux.h>
35 #include <vlc_input.h>
36
37 #include <vlc_dialog.h>
38
39 #include <vlc_meta.h>
40 #include <vlc_codecs.h>
41 #include <vlc_charset.h>
42 #include <vlc_memory.h>
43
44 #include "libavi.h"
45
46 /*****************************************************************************
47 * Module descriptor
48 *****************************************************************************/
49
50 #define INTERLEAVE_TEXT N_("Force interleaved method" )
51 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
52
53 #define INDEX_TEXT N_("Force index creation")
54 #define INDEX_LONGTEXT N_( \
55 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
56 "or incomplete (not seekable)." )
57
58 static int Open ( vlc_object_t * );
59 static void Close( vlc_object_t * );
60
61 static const int pi_index[] = {0,1,2};
62
63 static const char *const ppsz_indexes[] = { N_("Ask for action"),
64 N_("Always fix"),
65 N_("Never fix") };
66
67 vlc_module_begin ()
68 set_shortname( "AVI" )
69 set_description( N_("AVI demuxer") )
70 set_capability( "demux", 212 )
71 set_category( CAT_INPUT )
72 set_subcategory( SUBCAT_INPUT_DEMUX )
73
74 add_bool( "avi-interleaved", false,
75 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true )
76 add_integer( "avi-index", 0,
77 INDEX_TEXT, INDEX_LONGTEXT, false )
78 change_integer_list( pi_index, ppsz_indexes )
79
80 set_callbacks( Open, Close )
81 vlc_module_end ()
82
83 /*****************************************************************************
84 * Local prototypes
85 *****************************************************************************/
86 static int Control ( demux_t *, int, va_list );
87 static int Seek ( demux_t *, mtime_t, int );
88 static int Demux_Seekable ( demux_t * );
89 static int Demux_UnSeekable( demux_t * );
90
91 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
92
93 static char *FromACP( const char *str )
94 {
95 return FromCharset(vlc_pgettext("GetACP", "CP1252"), str, strlen(str));
96 }
97
98 typedef struct
99 {
100 vlc_fourcc_t i_fourcc;
101 off_t i_pos;
102 uint32_t i_size;
103 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
104
105 uint8_t i_peek[8]; /* first 8 bytes */
106
107 unsigned int i_stream;
108 unsigned int i_cat;
109 } avi_packet_t;
110
111
112 typedef struct
113 {
114 vlc_fourcc_t i_id;
115 uint32_t i_flags;
116 off_t i_pos;
117 uint32_t i_length;
118 int64_t i_lengthtotal;
119
120 } avi_entry_t;
121
122 typedef struct
123 {
124 unsigned int i_size;
125 unsigned int i_max;
126 avi_entry_t *p_entry;
127
128 } avi_index_t;
129 static void avi_index_Init( avi_index_t * );
130 static void avi_index_Clean( avi_index_t * );
131 static void avi_index_Append( avi_index_t *, off_t *, avi_entry_t * );
132
133 typedef struct
134 {
135 bool b_activated;
136 bool b_eof;
137
138 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
139 vlc_fourcc_t i_codec;
140
141 int i_rate;
142 int i_scale;
143 unsigned int i_samplesize;
144
145 es_out_id_t *p_es;
146
147 /* Avi Index */
148 avi_index_t idx;
149
150 unsigned int i_idxposc; /* numero of chunk */
151 unsigned int i_idxposb; /* byte in the current chunk */
152
153 /* For VBR audio only */
154 unsigned int i_blockno;
155 unsigned int i_blocksize;
156
157 /* For muxed streams */
158 stream_t *p_out_muxed;
159 } avi_track_t;
160
161 struct demux_sys_t
162 {
163 mtime_t i_time;
164 mtime_t i_length;
165
166 bool b_seekable;
167 bool b_muxed;
168 avi_chunk_t ck_root;
169
170 bool b_odml;
171
172 off_t i_movi_begin;
173 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
174
175 /* number of streams and information */
176 unsigned int i_track;
177 avi_track_t **track;
178
179 /* meta */
180 vlc_meta_t *meta;
181
182 unsigned int i_attachment;
183 input_attachment_t **attachment;
184 };
185
186 static inline off_t __EVEN( off_t i )
187 {
188 return (i & 1) ? i + 1 : i;
189 }
190
191 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
192 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
193 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
194 static mtime_t AVI_GetPTS ( avi_track_t * );
195
196
197 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
198 static int AVI_StreamChunkSet ( demux_t *,
199 unsigned int i_stream, unsigned int i_ck );
200 static int AVI_StreamBytesSet ( demux_t *,
201 unsigned int i_stream, off_t i_byte );
202
203 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
204 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
205
206 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
207 static int AVI_PacketNext ( demux_t * );
208 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
209 static int AVI_PacketSearch ( demux_t * );
210
211 static void AVI_IndexLoad ( demux_t * );
212 static void AVI_IndexCreate ( demux_t * );
213
214 static void AVI_ExtractSubtitle( demux_t *, unsigned int i_stream, avi_chunk_list_t *, avi_chunk_STRING_t * );
215
216 static mtime_t AVI_MovieGetLength( demux_t * );
217
218 static void AVI_MetaLoad( demux_t *, avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih );
219
220 /*****************************************************************************
221 * Stream management
222 *****************************************************************************/
223 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
224 static int AVI_TrackStopFinishedStreams( demux_t *);
225
226 /* Remarks:
227 - For VBR mp3 stream:
228 count blocks by rounded-up chunksizes instead of chunks
229 we need full emulation of dshow avi demuxer bugs :(
230 fixes silly nandub-style a-v delaying in avi with vbr mp3...
231 (from mplayer 2002/08/02)
232 - to complete....
233 */
234
235 /*****************************************************************************
236 * Open: check file and initializes AVI structures
237 *****************************************************************************/
238 static int Open( vlc_object_t * p_this )
239 {
240 demux_t *p_demux = (demux_t *)p_this;
241 demux_sys_t *p_sys;
242
243 bool b_index = false;
244 int i_do_index;
245
246 avi_chunk_list_t *p_riff;
247 avi_chunk_list_t *p_hdrl, *p_movi;
248 avi_chunk_avih_t *p_avih;
249
250 unsigned int i_track;
251 unsigned int i, i_peeker;
252
253 const uint8_t *p_peek;
254
255 /* Is it an avi file ? */
256 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
257
258 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
259 {
260 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
261 break;
262 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
263 break;
264 p_peek++;
265 }
266 if( i_peeker == 188 )
267 {
268 return VLC_EGENERIC;
269 }
270
271 /* Initialize input structures. */
272 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
273 memset( p_sys, 0, sizeof( demux_sys_t ) );
274 p_sys->i_time = 0;
275 p_sys->i_length = 0;
276 p_sys->i_movi_lastchunk_pos = 0;
277 p_sys->b_odml = false;
278 p_sys->b_muxed = false;
279 p_sys->i_track = 0;
280 p_sys->track = NULL;
281 p_sys->meta = NULL;
282 TAB_INIT(p_sys->i_attachment, p_sys->attachment);
283
284 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
285
286 p_demux->pf_control = Control;
287 p_demux->pf_demux = Demux_Seekable;
288
289 /* For unseekable stream, automatically use Demux_UnSeekable */
290 if( !p_sys->b_seekable
291 || var_InheritBool( p_demux, "avi-interleaved" ) )
292 {
293 p_demux->pf_demux = Demux_UnSeekable;
294 }
295
296 if( i_peeker > 0 )
297 {
298 stream_Read( p_demux->s, NULL, i_peeker );
299 }
300
301 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
302 {
303 msg_Err( p_demux, "avi module discarded (invalid file)" );
304 free(p_sys);
305 return VLC_EGENERIC;
306 }
307
308 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
309 {
310 unsigned int i_count =
311 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
312
313 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
314 for( i = 1; i < i_count; i++ )
315 {
316 avi_chunk_list_t *p_sysx;
317
318 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
319 if( p_sysx->i_type == AVIFOURCC_AVIX )
320 {
321 msg_Warn( p_demux, "detected OpenDML file" );
322 p_sys->b_odml = true;
323 break;
324 }
325 }
326 }
327
328 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
329 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
330 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
331
332 if( !p_hdrl || !p_movi )
333 {
334 msg_Err( p_demux, "avi module discarded (invalid file)" );
335 goto error;
336 }
337
338 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
339 {
340 msg_Err( p_demux, "cannot find avih chunk" );
341 goto error;
342 }
343 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
344 if( p_avih->i_streams != i_track )
345 {
346 msg_Warn( p_demux,
347 "found %d stream but %d are declared",
348 i_track, p_avih->i_streams );
349 }
350 if( i_track == 0 )
351 {
352 msg_Err( p_demux, "no stream defined!" );
353 goto error;
354 }
355
356 /* print information on streams */
357 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
358 i_track,
359 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
360 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
361 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
362 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
363
364 AVI_MetaLoad( p_demux, p_riff, p_avih );
365
366 /* now read info on each stream and create ES */
367 for( i = 0 ; i < i_track; i++ )
368 {
369 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
370 if( !tk )
371 goto error;
372
373 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
374 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
375 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
376 avi_chunk_strf_auds_t *p_auds = NULL;
377 avi_chunk_strf_vids_t *p_vids = NULL;
378 es_format_t fmt;
379
380 memset( tk, 0, sizeof(*tk) );
381 tk->b_eof = false;
382 tk->b_activated = true;
383
384 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
385 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
386
387 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
388 {
389 msg_Warn( p_demux, "stream[%d] incomplete", i );
390 free( tk );
391 continue;
392 }
393
394 tk->i_rate = p_strh->i_rate;
395 tk->i_scale = p_strh->i_scale;
396 tk->i_samplesize = p_strh->i_samplesize;
397 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
398 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
399
400 switch( p_strh->i_type )
401 {
402 case( AVIFOURCC_auds ):
403 tk->i_cat = AUDIO_ES;
404 if( p_auds->p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
405 p_auds->p_wf->cbSize >= sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX) )
406 {
407 WAVEFORMATEXTENSIBLE *p_wfe = (WAVEFORMATEXTENSIBLE *)p_auds->p_wf;
408 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
409 p_wfe->SubFormat.Data1 );
410 }
411 else
412 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
413 p_auds->p_wf->wFormatTag );
414
415 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
416 if( tk->i_blocksize == 0 )
417 {
418 if( p_auds->p_wf->wFormatTag == 1 )
419 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
420 else
421 tk->i_blocksize = 1;
422 }
423 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
424 {
425 msg_Warn( p_demux, "track[%d] samplesize=%d and blocksize=%d are not equal."
426 "Using blocksize as a workaround.",
427 i, tk->i_samplesize, tk->i_blocksize );
428 tk->i_samplesize = tk->i_blocksize;
429 }
430
431 if( tk->i_codec == VLC_CODEC_VORBIS )
432 {
433 tk->i_blocksize = 0; /* fix vorbis VBR decoding */
434 }
435
436 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
437
438 fmt.audio.i_channels = p_auds->p_wf->nChannels;
439 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
440 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
441 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
442 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
443 fmt.b_packetized = !tk->i_blocksize;
444
445 msg_Dbg( p_demux,
446 "stream[%d] audio(0x%x) %d channels %dHz %dbits",
447 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
448 p_auds->p_wf->nSamplesPerSec,
449 p_auds->p_wf->wBitsPerSample );
450
451 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
452 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
453 if( fmt.i_extra > 0 )
454 {
455 fmt.p_extra = malloc( fmt.i_extra );
456 if( !fmt.p_extra ) goto error;
457 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
458 }
459 break;
460
461 case( AVIFOURCC_vids ):
462 tk->i_cat = VIDEO_ES;
463 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
464 p_vids->p_bih->biCompression );
465 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
466 {
467 msg_Dbg( p_demux, "stream[%d] subtitles", i );
468 es_format_Init( &fmt, SPU_ES, p_vids->p_bih->biCompression );
469 tk->i_cat = SPU_ES;
470 break;
471 }
472 else if( p_vids->p_bih->biCompression == 0x00 )
473 {
474 switch( p_vids->p_bih->biBitCount )
475 {
476 case 32:
477 tk->i_codec = VLC_CODEC_RGB32;
478 break;
479 case 24:
480 tk->i_codec = VLC_CODEC_RGB24;
481 break;
482 case 16: /* Yes it is RV15 */
483 case 15:
484 tk->i_codec = VLC_CODEC_RGB15;
485 break;
486 case 9: /* <- TODO check that */
487 tk->i_codec = VLC_CODEC_I410;
488 break;
489 case 8: /* <- TODO check that */
490 tk->i_codec = VLC_CODEC_GREY;
491 break;
492 }
493 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
494
495 switch( tk->i_codec )
496 {
497 case VLC_CODEC_RGB24:
498 case VLC_CODEC_RGB32:
499 fmt.video.i_rmask = 0x00ff0000;
500 fmt.video.i_gmask = 0x0000ff00;
501 fmt.video.i_bmask = 0x000000ff;
502 break;
503 case VLC_CODEC_RGB15:
504 fmt.video.i_rmask = 0x7c00;
505 fmt.video.i_gmask = 0x03e0;
506 fmt.video.i_bmask = 0x001f;
507 break;
508 default:
509 break;
510 }
511 }
512 else
513 {
514 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
515 if( tk->i_codec == VLC_CODEC_MP4V &&
516 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
517 {
518 fmt.i_codec =
519 fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
520 }
521 }
522 tk->i_samplesize = 0;
523 fmt.video.i_width = p_vids->p_bih->biWidth;
524 fmt.video.i_height = p_vids->p_bih->biHeight;
525 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
526 fmt.video.i_frame_rate = tk->i_rate;
527 fmt.video.i_frame_rate_base = tk->i_scale;
528 fmt.i_extra =
529 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
530 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
531 if( fmt.i_extra > 0 )
532 {
533 fmt.p_extra = malloc( fmt.i_extra );
534 if( !fmt.p_extra ) goto error;
535 memcpy( fmt.p_extra, &p_vids->p_bih[1], fmt.i_extra );
536 }
537
538 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
539 i, (char*)&p_vids->p_bih->biCompression,
540 (uint32_t)p_vids->p_bih->biWidth,
541 (uint32_t)p_vids->p_bih->biHeight,
542 p_vids->p_bih->biBitCount,
543 (float)tk->i_rate/(float)tk->i_scale );
544
545 if( p_vids->p_bih->biCompression == 0x00 )
546 {
547 /* RGB DIB are coded from bottom to top */
548 fmt.video.i_height =
549 (unsigned int)(-(int)p_vids->p_bih->biHeight);
550 }
551
552 /* Extract palette from extradata if bpp <= 8
553 * (assumes that extradata contains only palette but appears
554 * to be true for all palettized codecs we support) */
555 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
556 {
557 /* The palette is not always included in biSize */
558 fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
559 if( fmt.i_extra > 0 )
560 {
561 const uint8_t *p_pal = fmt.p_extra;
562
563 fmt.video.p_palette = calloc( 1, sizeof(video_palette_t) );
564 fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
565
566 for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
567 {
568 for( int j = 0; j < 4; j++ )
569 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
570 }
571 }
572 }
573 break;
574
575 case( AVIFOURCC_txts):
576 msg_Dbg( p_demux, "stream[%d] subtitle attachment", i );
577 AVI_ExtractSubtitle( p_demux, i, p_strl, p_strn );
578 free( tk );
579 continue;
580
581 case( AVIFOURCC_iavs):
582 case( AVIFOURCC_ivas):
583 p_sys->b_muxed = true;
584 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
585 if( p_strh->i_handler == FOURCC_dvsd ||
586 p_strh->i_handler == FOURCC_dvhd ||
587 p_strh->i_handler == FOURCC_dvsl ||
588 p_strh->i_handler == FOURCC_dv25 ||
589 p_strh->i_handler == FOURCC_dv50 )
590 {
591 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
592 if( !tk->p_out_muxed )
593 msg_Err( p_demux, "could not load the DV parser" );
594 else break;
595 }
596 free( tk );
597 continue;
598
599 case( AVIFOURCC_mids):
600 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
601
602 default:
603 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
604 free( tk );
605 continue;
606 }
607 if( p_strn )
608 fmt.psz_description = FromACP( p_strn->p_str );
609 if( tk->p_out_muxed == NULL )
610 tk->p_es = es_out_Add( p_demux->out, &fmt );
611 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
612 if(!p_sys->b_muxed )
613 {
614 es_format_Clean( &fmt );
615 }
616 }
617
618 if( p_sys->i_track <= 0 )
619 {
620 msg_Err( p_demux, "no valid track" );
621 goto error;
622 }
623
624 i_do_index = var_InheritInteger( p_demux, "avi-index" );
625 if( i_do_index == 1 ) /* Always fix */
626 {
627 aviindex:
628 if( p_sys->b_seekable )
629 {
630 AVI_IndexCreate( p_demux );
631 }
632 else
633 {
634 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
635 AVI_IndexLoad( p_demux );
636 }
637 }
638 else
639 {
640 AVI_IndexLoad( p_demux );
641 }
642
643 /* *** movie length in sec *** */
644 p_sys->i_length = AVI_MovieGetLength( p_demux );
645
646 /* Check the index completeness */
647 unsigned int i_idx_totalframes = 0;
648 for( unsigned int i = 0; i < p_sys->i_track; i++ )
649 {
650 const avi_track_t *tk = p_sys->track[i];
651 if( tk->i_cat == VIDEO_ES && tk->idx.p_entry )
652 i_idx_totalframes = __MAX(i_idx_totalframes, tk->idx.i_size);
653 continue;
654 }
655 if( i_idx_totalframes != p_avih->i_totalframes &&
656 p_sys->i_length < (mtime_t)p_avih->i_totalframes *
657 (mtime_t)p_avih->i_microsecperframe /
658 (mtime_t)1000000 )
659 {
660 if( !vlc_object_alive( p_demux) )
661 goto error;
662
663 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
664 "approximative or will exhibit strange behavior" );
665 if( i_do_index == 0 && !b_index )
666 {
667 if( !p_sys->b_seekable ) {
668 b_index = true;
669 goto aviindex;
670 }
671 switch( dialog_Question( p_demux, _("Broken or missing AVI Index") ,
672 _( "Because this AVI file index is broken or missing, "
673 "seeking will not work correctly.\n"
674 "VLC won't repair your file but can temporary fix this "
675 "problem by building an index in memory.\n"
676 "This step might take a long time on a large file.\n"
677 "What do you want to do ?" ),
678 _( "Build index then play" ), _( "Play as is" ), _( "Do not play") ) )
679 {
680 case 1:
681 b_index = true;
682 msg_Dbg( p_demux, "Fixing AVI index" );
683 goto aviindex;
684 case 3:
685 /* Kill input */
686 vlc_object_kill( p_demux->p_parent );
687 goto error;
688 }
689 }
690 }
691
692 /* fix some BeOS MediaKit generated file */
693 for( i = 0 ; i < p_sys->i_track; i++ )
694 {
695 avi_track_t *tk = p_sys->track[i];
696 avi_chunk_list_t *p_strl;
697 avi_chunk_strh_t *p_strh;
698 avi_chunk_strf_auds_t *p_auds;
699
700 if( tk->i_cat != AUDIO_ES )
701 {
702 continue;
703 }
704 if( tk->idx.i_size < 1 ||
705 tk->i_scale != 1 ||
706 tk->i_samplesize != 0 )
707 {
708 continue;
709 }
710 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
711 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
712 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
713
714 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
715 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
716 {
717 int64_t i_track_length =
718 tk->idx.p_entry[tk->idx.i_size-1].i_length +
719 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal;
720 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
721 (mtime_t)p_avih->i_microsecperframe;
722
723 if( i_length == 0 )
724 {
725 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
726 continue;
727 }
728 tk->i_samplesize = 1;
729 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
730 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
731 }
732 }
733
734 if( p_sys->b_seekable )
735 {
736 /* we have read all chunk so go back to movi */
737 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
738 }
739 /* Skip movi header */
740 stream_Read( p_demux->s, NULL, 12 );
741
742 p_sys->i_movi_begin = p_movi->i_chunk_pos;
743 return VLC_SUCCESS;
744
745 error:
746 for( unsigned i = 0; i < p_sys->i_attachment; i++)
747 vlc_input_attachment_Delete(p_sys->attachment[i]);
748 free(p_sys->attachment);
749
750 if( p_sys->meta )
751 vlc_meta_Delete( p_sys->meta );
752
753 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
754 free( p_sys );
755 return vlc_object_alive( p_demux ) ? VLC_EGENERIC : VLC_ETIMEOUT;
756 }
757
758 /*****************************************************************************
759 * Close: frees unused data
760 *****************************************************************************/
761 static void Close ( vlc_object_t * p_this )
762 {
763 demux_t * p_demux = (demux_t *)p_this;
764 unsigned int i;
765 demux_sys_t *p_sys = p_demux->p_sys ;
766
767 for( i = 0; i < p_sys->i_track; i++ )
768 {
769 if( p_sys->track[i] )
770 {
771 if( p_sys->track[i]->p_out_muxed )
772 stream_Delete( p_sys->track[i]->p_out_muxed );
773 avi_index_Clean( &p_sys->track[i]->idx );
774 free( p_sys->track[i] );
775 }
776 }
777 free( p_sys->track );
778 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
779 vlc_meta_Delete( p_sys->meta );
780 for( unsigned i = 0; i < p_sys->i_attachment; i++)
781 vlc_input_attachment_Delete(p_sys->attachment[i]);
782 free(p_sys->attachment);
783
784 free( p_sys );
785 }
786
787 /*****************************************************************************
788 * Demux_Seekable: reads and demuxes data packets for stream seekable
789 *****************************************************************************
790 * AVIDemux: reads and demuxes data packets
791 *****************************************************************************
792 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
793 *****************************************************************************/
794 typedef struct
795 {
796 bool b_ok;
797
798 int i_toread;
799
800 off_t i_posf; /* where we will read :
801 if i_idxposb == 0 : begining of chunk (+8 to acces data)
802 else : point on data directly */
803 } avi_track_toread_t;
804
805 static int Demux_Seekable( demux_t *p_demux )
806 {
807 demux_sys_t *p_sys = p_demux->p_sys;
808
809 unsigned int i_track_count = 0;
810 unsigned int i_track;
811 /* cannot be more than 100 stream (dcXX or wbXX) */
812 avi_track_toread_t toread[100];
813
814
815 /* detect new selected/unselected streams */
816 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
817 {
818 avi_track_t *tk = p_sys->track[i_track];
819 bool b;
820
821 if( p_sys->b_muxed && tk->p_out_muxed )
822 {
823 i_track_count++;
824 tk->b_activated = true;
825 continue;
826 }
827
828 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
829 if( b && !tk->b_activated )
830 {
831 if( p_sys->b_seekable)
832 {
833 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
834 }
835 tk->b_activated = true;
836 }
837 else if( !b && tk->b_activated )
838 {
839 tk->b_activated = false;
840 }
841 if( b )
842 {
843 i_track_count++;
844 }
845 }
846
847 if( i_track_count <= 0 )
848 {
849 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
850
851 p_sys->i_time += 25*1000; /* read 25ms */
852 if( i_length > 0 )
853 {
854 if( p_sys->i_time >= i_length )
855 return 0;
856 return 1;
857 }
858 msg_Warn( p_demux, "no track selected, exiting..." );
859 return 0;
860 }
861
862 /* wait for the good time */
863 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
864 p_sys->i_time += 25*1000; /* read 25ms */
865
866 /* init toread */
867 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
868 {
869 avi_track_t *tk = p_sys->track[i_track];
870 mtime_t i_dpts;
871
872 toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
873 if( tk->i_idxposc < tk->idx.i_size )
874 {
875 toread[i_track].i_posf = tk->idx.p_entry[tk->i_idxposc].i_pos;
876 if( tk->i_idxposb > 0 )
877 {
878 toread[i_track].i_posf += 8 + tk->i_idxposb;
879 }
880 }
881 else
882 {
883 toread[i_track].i_posf = -1;
884 }
885
886 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
887
888 if( tk->i_samplesize )
889 {
890 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
891 }
892 else
893 {
894 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
895 }
896
897 if( i_dpts < 0 )
898 {
899 toread[i_track].i_toread *= -1;
900 }
901 }
902
903 for( ;; )
904 {
905 avi_track_t *tk;
906 bool b_done;
907 block_t *p_frame;
908 off_t i_pos;
909 unsigned int i;
910 size_t i_size;
911
912 /* search for first chunk to be read */
913 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
914 {
915 if( !toread[i].b_ok ||
916 AVI_GetDPTS( p_sys->track[i],
917 toread[i].i_toread ) <= -25 * 1000 )
918 {
919 continue;
920 }
921
922 if( toread[i].i_toread > 0 )
923 {
924 b_done = false; /* not yet finished */
925 }
926 if( toread[i].i_posf > 0 )
927 {
928 if( i_pos == -1 || i_pos > toread[i].i_posf )
929 {
930 i_track = i;
931 i_pos = toread[i].i_posf;
932 }
933 }
934 }
935
936 if( b_done )
937 {
938 for( i = 0; i < p_sys->i_track; i++ )
939 {
940 if( toread[i].b_ok )
941 return 1;
942 }
943 msg_Warn( p_demux, "all tracks have failed, exiting..." );
944 return 0;
945 }
946
947 if( i_pos == -1 )
948 {
949 int i_loop_count = 0;
950
951 /* no valid index, we will parse directly the stream
952 * in case we fail we will disable all finished stream */
953 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
954 {
955 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
956 if( AVI_PacketNext( p_demux ) )
957 {
958 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
959 }
960 }
961 else
962 {
963 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
964 }
965
966 for( ;; )
967 {
968 avi_packet_t avi_pk;
969
970 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
971 {
972 msg_Warn( p_demux,
973 "cannot get packet header, track disabled" );
974 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
975 }
976 if( avi_pk.i_stream >= p_sys->i_track ||
977 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
978 {
979 if( AVI_PacketNext( p_demux ) )
980 {
981 msg_Warn( p_demux,
982 "cannot skip packet, track disabled" );
983 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
984 }
985
986 /* Prevents from eating all the CPU with broken files.
987 * This value should be low enough so that it doesn't
988 * affect the reading speed too much. */
989 if( !(++i_loop_count % 1024) )
990 {
991 if( !vlc_object_alive (p_demux) ) return -1;
992 msleep( 10000 );
993
994 if( !(i_loop_count % (1024 * 10)) )
995 msg_Warn( p_demux,
996 "don't seem to find any data..." );
997 }
998 continue;
999 }
1000 else
1001 {
1002 i_track = avi_pk.i_stream;
1003 tk = p_sys->track[i_track];
1004
1005 /* add this chunk to the index */
1006 avi_entry_t index;
1007 index.i_id = avi_pk.i_fourcc;
1008 index.i_flags = AVI_GetKeyFlag(tk->i_codec, avi_pk.i_peek);
1009 index.i_pos = avi_pk.i_pos;
1010 index.i_length = avi_pk.i_size;
1011 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1012
1013 /* do we will read this data ? */
1014 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1015 {
1016 break;
1017 }
1018 else
1019 {
1020 if( AVI_PacketNext( p_demux ) )
1021 {
1022 msg_Warn( p_demux,
1023 "cannot skip packet, track disabled" );
1024 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1025 }
1026 }
1027 }
1028 }
1029
1030 }
1031 else
1032 {
1033 stream_Seek( p_demux->s, i_pos );
1034 }
1035
1036 /* Set the track to use */
1037 tk = p_sys->track[i_track];
1038
1039 /* read thoses data */
1040 if( tk->i_samplesize )
1041 {
1042 unsigned int i_toread;
1043
1044 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1045 {
1046 if( tk->i_samplesize > 1 )
1047 {
1048 i_toread = tk->i_samplesize;
1049 }
1050 else
1051 {
1052 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1053 i_toread = __MAX( i_toread, 100 );
1054 }
1055 }
1056 i_size = __MIN( tk->idx.p_entry[tk->i_idxposc].i_length -
1057 tk->i_idxposb,
1058 i_toread );
1059 }
1060 else
1061 {
1062 i_size = tk->idx.p_entry[tk->i_idxposc].i_length;
1063 }
1064
1065 if( tk->i_idxposb == 0 )
1066 {
1067 i_size += 8; /* need to read and skip header */
1068 }
1069
1070 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1071 {
1072 msg_Warn( p_demux, "failed reading data" );
1073 tk->b_eof = false;
1074 toread[i_track].b_ok = false;
1075 continue;
1076 }
1077 if( i_size % 2 ) /* read was padded on word boundary */
1078 {
1079 p_frame->i_buffer--;
1080 }
1081 /* skip header */
1082 if( tk->i_idxposb == 0 )
1083 {
1084 p_frame->p_buffer += 8;
1085 p_frame->i_buffer -= 8;
1086 }
1087 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1088 if( tk->idx.p_entry[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1089 {
1090 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1091 }
1092 else
1093 {
1094 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1095 }
1096
1097 /* read data */
1098 if( tk->i_samplesize )
1099 {
1100 if( tk->i_idxposb == 0 )
1101 {
1102 i_size -= 8;
1103 }
1104 toread[i_track].i_toread -= i_size;
1105 tk->i_idxposb += i_size;
1106 if( tk->i_idxposb >=
1107 tk->idx.p_entry[tk->i_idxposc].i_length )
1108 {
1109 tk->i_idxposb = 0;
1110 tk->i_idxposc++;
1111 }
1112 }
1113 else
1114 {
1115 int i_length = tk->idx.p_entry[tk->i_idxposc].i_length;
1116
1117 tk->i_idxposc++;
1118 if( tk->i_cat == AUDIO_ES )
1119 {
1120 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1121 }
1122 toread[i_track].i_toread--;
1123 }
1124
1125 if( tk->i_idxposc < tk->idx.i_size)
1126 {
1127 toread[i_track].i_posf =
1128 tk->idx.p_entry[tk->i_idxposc].i_pos;
1129 if( tk->i_idxposb > 0 )
1130 {
1131 toread[i_track].i_posf += 8 + tk->i_idxposb;
1132 }
1133
1134 }
1135 else
1136 {
1137 toread[i_track].i_posf = -1;
1138 }
1139
1140 if( tk->i_cat != VIDEO_ES )
1141 p_frame->i_dts = p_frame->i_pts;
1142 else
1143 {
1144 p_frame->i_dts = p_frame->i_pts;
1145 p_frame->i_pts = VLC_TS_INVALID;
1146 }
1147
1148 //p_pes->i_rate = p_demux->stream.control.i_rate;
1149 if( tk->p_out_muxed )
1150 stream_DemuxSend( tk->p_out_muxed, p_frame );
1151 else
1152 es_out_Send( p_demux->out, tk->p_es, p_frame );
1153 }
1154 }
1155
1156
1157 /*****************************************************************************
1158 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1159 *****************************************************************************
1160 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1161 *****************************************************************************/
1162 static int Demux_UnSeekable( demux_t *p_demux )
1163 {
1164 demux_sys_t *p_sys = p_demux->p_sys;
1165 avi_track_t *p_stream_master = NULL;
1166 unsigned int i_stream;
1167 unsigned int i_packet;
1168
1169 if( p_sys->b_muxed )
1170 {
1171 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1172 return VLC_EGENERIC;
1173 }
1174
1175 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1176
1177 /* *** find master stream for data packet skipping algo *** */
1178 /* *** -> first video, if any, or first audio ES *** */
1179 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1180 {
1181 avi_track_t *tk = p_sys->track[i_stream];
1182 bool b;
1183
1184 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1185
1186 if( b && tk->i_cat == VIDEO_ES )
1187 {
1188 p_stream_master = tk;
1189 }
1190 else if( b )
1191 {
1192 p_stream_master = tk;
1193 }
1194 }
1195
1196 if( !p_stream_master )
1197 {
1198 msg_Warn( p_demux, "no more stream selected" );
1199 return( 0 );
1200 }
1201
1202 p_sys->i_time = AVI_GetPTS( p_stream_master );
1203
1204 for( i_packet = 0; i_packet < 10; i_packet++)
1205 {
1206 #define p_stream p_sys->track[avi_pk.i_stream]
1207
1208 avi_packet_t avi_pk;
1209
1210 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1211 {
1212 return( 0 );
1213 }
1214
1215 if( avi_pk.i_stream >= p_sys->i_track ||
1216 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1217 {
1218 /* we haven't found an audio or video packet:
1219 * - we have seek, found first next packet
1220 * - others packets could be found, skip them
1221 */
1222 switch( avi_pk.i_fourcc )
1223 {
1224 case AVIFOURCC_JUNK:
1225 case AVIFOURCC_LIST:
1226 case AVIFOURCC_RIFF:
1227 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1228 case AVIFOURCC_idx1:
1229 if( p_sys->b_odml )
1230 {
1231 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1232 }
1233 return( 0 ); /* eof */
1234 default:
1235 msg_Warn( p_demux,
1236 "seems to have lost position, resync" );
1237 if( AVI_PacketSearch( p_demux ) )
1238 {
1239 msg_Err( p_demux, "resync failed" );
1240 return( -1 );
1241 }
1242 }
1243 }
1244 else
1245 {
1246 /* check for time */
1247 if( __ABS( AVI_GetPTS( p_stream ) -
1248 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1249 {
1250 /* load it and send to decoder */
1251 block_t *p_frame;
1252 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1253 {
1254 return( -1 );
1255 }
1256 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1257
1258 if( avi_pk.i_cat != VIDEO_ES )
1259 p_frame->i_dts = p_frame->i_pts;
1260 else
1261 {
1262 p_frame->i_dts = p_frame->i_pts;
1263 p_frame->i_pts = VLC_TS_INVALID;
1264 }
1265
1266 //p_pes->i_rate = p_demux->stream.control.i_rate;
1267 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1268 }
1269 else
1270 {
1271 if( AVI_PacketNext( p_demux ) )
1272 {
1273 return( 0 );
1274 }
1275 }
1276
1277 /* *** update stream time position *** */
1278 if( p_stream->i_samplesize )
1279 {
1280 p_stream->i_idxposb += avi_pk.i_size;
1281 }
1282 else
1283 {
1284 if( p_stream->i_cat == AUDIO_ES )
1285 {
1286 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1287 }
1288 p_stream->i_idxposc++;
1289 }
1290
1291 }
1292 #undef p_stream
1293 }
1294
1295 return( 1 );
1296 }
1297
1298 /*****************************************************************************
1299 * Seek: goto to i_date or i_percent
1300 *****************************************************************************/
1301 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1302 {
1303
1304 demux_sys_t *p_sys = p_demux->p_sys;
1305 unsigned int i_stream;
1306 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1307 i_date / 1000000, i_percent );
1308
1309 if( p_sys->b_seekable )
1310 {
1311 if( !p_sys->i_length )
1312 {
1313 avi_track_t *p_stream;
1314 int64_t i_pos;
1315
1316 /* use i_percent to create a true i_date */
1317 msg_Warn( p_demux, "seeking without index at %d%%"
1318 " only works for interleaved files", i_percent );
1319 if( i_percent >= 100 )
1320 {
1321 msg_Warn( p_demux, "cannot seek so far !" );
1322 return VLC_EGENERIC;
1323 }
1324 i_percent = __MAX( i_percent, 0 );
1325
1326 /* try to find chunk that is at i_percent or the file */
1327 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1328 p_sys->i_movi_begin );
1329 /* search first selected stream (and prefer non eof ones) */
1330 for( i_stream = 0, p_stream = NULL;
1331 i_stream < p_sys->i_track; i_stream++ )
1332 {
1333 if( !p_stream || p_stream->b_eof )
1334 p_stream = p_sys->track[i_stream];
1335
1336 if( p_stream->b_activated && !p_stream->b_eof )
1337 break;
1338 }
1339 if( !p_stream || !p_stream->b_activated )
1340 {
1341 msg_Warn( p_demux, "cannot find any selected stream" );
1342 return VLC_EGENERIC;
1343 }
1344
1345 /* be sure that the index exist */
1346 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1347 {
1348 msg_Warn( p_demux, "cannot seek" );
1349 return VLC_EGENERIC;
1350 }
1351
1352 while( i_pos >= p_stream->idx.p_entry[p_stream->i_idxposc].i_pos +
1353 p_stream->idx.p_entry[p_stream->i_idxposc].i_length + 8 )
1354 {
1355 /* search after i_idxposc */
1356 if( AVI_StreamChunkSet( p_demux,
1357 i_stream, p_stream->i_idxposc + 1 ) )
1358 {
1359 msg_Warn( p_demux, "cannot seek" );
1360 return VLC_EGENERIC;
1361 }
1362 }
1363
1364 i_date = AVI_GetPTS( p_stream );
1365 /* TODO better support for i_samplesize != 0 */
1366 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1367 }
1368
1369 /* */
1370 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1371 {
1372 avi_track_t *p_stream = p_sys->track[i_stream];
1373
1374 if( !p_stream->b_activated )
1375 continue;
1376
1377 p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_date ) != 0;
1378 }
1379 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1380 p_sys->i_time = i_date;
1381 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1382 return VLC_SUCCESS;
1383 }
1384 else
1385 {
1386 msg_Err( p_demux, "shouldn't yet be executed" );
1387 return VLC_EGENERIC;
1388 }
1389 }
1390
1391 /*****************************************************************************
1392 * Control:
1393 *****************************************************************************/
1394 static double ControlGetPosition( demux_t *p_demux )
1395 {
1396 demux_sys_t *p_sys = p_demux->p_sys;
1397
1398 if( p_sys->i_length > 0 )
1399 {
1400 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1401 }
1402 else if( stream_Size( p_demux->s ) > 0 )
1403 {
1404 unsigned int i;
1405 int64_t i_tmp;
1406 int64_t i64 = 0;
1407
1408 /* search the more advanced selected es */
1409 for( i = 0; i < p_sys->i_track; i++ )
1410 {
1411 avi_track_t *tk = p_sys->track[i];
1412 if( tk->b_activated && tk->i_idxposc < tk->idx.i_size )
1413 {
1414 i_tmp = tk->idx.p_entry[tk->i_idxposc].i_pos +
1415 tk->idx.p_entry[tk->i_idxposc].i_length + 8;
1416 if( i_tmp > i64 )
1417 {
1418 i64 = i_tmp;
1419 }
1420 }
1421 }
1422 return (double)i64 / stream_Size( p_demux->s );
1423 }
1424 return 0.0;
1425 }
1426
1427 static int Control( demux_t *p_demux, int i_query, va_list args )
1428 {
1429 demux_sys_t *p_sys = p_demux->p_sys;
1430 int i;
1431 double f, *pf;
1432 int64_t i64, *pi64;
1433 vlc_meta_t *p_meta;
1434
1435 switch( i_query )
1436 {
1437 case DEMUX_GET_POSITION:
1438 pf = (double*)va_arg( args, double * );
1439 *pf = ControlGetPosition( p_demux );
1440 return VLC_SUCCESS;
1441 case DEMUX_SET_POSITION:
1442 f = (double)va_arg( args, double );
1443 if( p_sys->b_seekable )
1444 {
1445 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1446 return Seek( p_demux, i64, (int)(f * 100) );
1447 }
1448 else
1449 {
1450 int64_t i_pos = stream_Size( p_demux->s ) * f;
1451 return stream_Seek( p_demux->s, i_pos );
1452 }
1453
1454 case DEMUX_GET_TIME:
1455 pi64 = (int64_t*)va_arg( args, int64_t * );
1456 *pi64 = p_sys->i_time;
1457 return VLC_SUCCESS;
1458
1459 case DEMUX_SET_TIME:
1460 {
1461 int i_percent = 0;
1462
1463 i64 = (int64_t)va_arg( args, int64_t );
1464 if( p_sys->i_length > 0 )
1465 {
1466 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1467 }
1468 else if( p_sys->i_time > 0 )
1469 {
1470 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1471 (double)i64 / (double)p_sys->i_time );
1472 }
1473 return Seek( p_demux, i64, i_percent );
1474 }
1475 case DEMUX_GET_LENGTH:
1476 pi64 = (int64_t*)va_arg( args, int64_t * );
1477 *pi64 = p_sys->i_length * (mtime_t)1000000;
1478 return VLC_SUCCESS;
1479
1480 case DEMUX_GET_FPS:
1481 pf = (double*)va_arg( args, double * );
1482 *pf = 0.0;
1483 for( i = 0; i < (int)p_sys->i_track; i++ )
1484 {
1485 avi_track_t *tk = p_sys->track[i];
1486 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1487 {
1488 *pf = (float)tk->i_rate / (float)tk->i_scale;
1489 break;
1490 }
1491 }
1492 return VLC_SUCCESS;
1493
1494 case DEMUX_GET_META:
1495 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1496 vlc_meta_Merge( p_meta, p_sys->meta );
1497 return VLC_SUCCESS;
1498
1499 case DEMUX_GET_ATTACHMENTS:
1500 {
1501 if( p_sys->i_attachment <= 0 )
1502 return VLC_EGENERIC;
1503
1504 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1505 int *pi_int = va_arg( args, int * );
1506
1507 *pi_int = p_sys->i_attachment;
1508 *ppp_attach = calloc( p_sys->i_attachment, sizeof(*ppp_attach));
1509 for( unsigned i = 0; i < p_sys->i_attachment && *ppp_attach; i++ )
1510 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachment[i] );
1511 return VLC_SUCCESS;
1512 }
1513
1514 default:
1515 return VLC_EGENERIC;
1516 }
1517 }
1518
1519 /*****************************************************************************
1520 * Function to convert pts to chunk or byte
1521 *****************************************************************************/
1522
1523 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1524 {
1525 if( !tk->i_scale )
1526 return (mtime_t)0;
1527
1528 return (mtime_t)((int64_t)i_pts *
1529 (int64_t)tk->i_rate /
1530 (int64_t)tk->i_scale /
1531 (int64_t)1000000 );
1532 }
1533 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1534 {
1535 if( !tk->i_scale || !tk->i_samplesize )
1536 return (mtime_t)0;
1537
1538 return (mtime_t)((int64_t)i_pts *
1539 (int64_t)tk->i_rate /
1540 (int64_t)tk->i_scale /
1541 (int64_t)1000000 *
1542 (int64_t)tk->i_samplesize );
1543 }
1544
1545 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1546 {
1547 mtime_t i_dpts = 0;
1548
1549 if( !tk->i_rate )
1550 return i_dpts;
1551
1552 i_dpts = (mtime_t)( (int64_t)1000000 *
1553 (int64_t)i_count *
1554 (int64_t)tk->i_scale /
1555 (int64_t)tk->i_rate );
1556
1557 if( tk->i_samplesize )
1558 {
1559 return i_dpts / tk->i_samplesize;
1560 }
1561 return i_dpts;
1562 }
1563
1564 static mtime_t AVI_GetPTS( avi_track_t *tk )
1565 {
1566 if( tk->i_samplesize )
1567 {
1568 int64_t i_count = 0;
1569
1570 /* we need a valid entry we will emulate one */
1571 if( tk->i_idxposc == tk->idx.i_size )
1572 {
1573 if( tk->i_idxposc )
1574 {
1575 /* use the last entry */
1576 i_count = tk->idx.p_entry[tk->idx.i_size - 1].i_lengthtotal
1577 + tk->idx.p_entry[tk->idx.i_size - 1].i_length;
1578 }
1579 }
1580 else
1581 {
1582 i_count = tk->idx.p_entry[tk->i_idxposc].i_lengthtotal;
1583 }
1584 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1585 }
1586 else
1587 {
1588 if( tk->i_cat == AUDIO_ES )
1589 {
1590 return AVI_GetDPTS( tk, tk->i_blockno );
1591 }
1592 else
1593 {
1594 return AVI_GetDPTS( tk, tk->i_idxposc );
1595 }
1596 }
1597 }
1598
1599 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1600 {
1601 demux_sys_t *p_sys = p_demux->p_sys;
1602 avi_packet_t avi_pk;
1603 int i_loop_count = 0;
1604
1605 /* find first chunk of i_stream that isn't in index */
1606
1607 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1608 {
1609 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1610 if( AVI_PacketNext( p_demux ) )
1611 {
1612 return VLC_EGENERIC;
1613 }
1614 }
1615 else
1616 {
1617 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1618 }
1619
1620 for( ;; )
1621 {
1622 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1623
1624 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1625 {
1626 msg_Warn( p_demux, "cannot get packet header" );
1627 return VLC_EGENERIC;
1628 }
1629 if( avi_pk.i_stream >= p_sys->i_track ||
1630 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1631 {
1632 if( AVI_PacketNext( p_demux ) )
1633 {
1634 return VLC_EGENERIC;
1635 }
1636
1637 /* Prevents from eating all the CPU with broken files.
1638 * This value should be low enough so that it doesn't
1639 * affect the reading speed too much. */
1640 if( !(++i_loop_count % 1024) )
1641 {
1642 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1643 msleep( 10000 );
1644
1645 if( !(i_loop_count % (1024 * 10)) )
1646 msg_Warn( p_demux, "don't seem to find any data..." );
1647 }
1648 }
1649 else
1650 {
1651 avi_track_t *tk_pk = p_sys->track[avi_pk.i_stream];
1652
1653 /* add this chunk to the index */
1654 avi_entry_t index;
1655 index.i_id = avi_pk.i_fourcc;
1656 index.i_flags = AVI_GetKeyFlag(tk_pk->i_codec, avi_pk.i_peek);
1657 index.i_pos = avi_pk.i_pos;
1658 index.i_length = avi_pk.i_size;
1659 avi_index_Append( &tk_pk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1660
1661 if( avi_pk.i_stream == i_stream )
1662 {
1663 return VLC_SUCCESS;
1664 }
1665
1666 if( AVI_PacketNext( p_demux ) )
1667 {
1668 return VLC_EGENERIC;
1669 }
1670 }
1671 }
1672 }
1673
1674 /* be sure that i_ck will be a valid index entry */
1675 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1676 unsigned int i_ck )
1677 {
1678 demux_sys_t *p_sys = p_demux->p_sys;
1679 avi_track_t *p_stream = p_sys->track[i_stream];
1680
1681 p_stream->i_idxposc = i_ck;
1682 p_stream->i_idxposb = 0;
1683
1684 if( i_ck >= p_stream->idx.i_size )
1685 {
1686 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1687 do
1688 {
1689 p_stream->i_idxposc++;
1690 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1691 {
1692 return VLC_EGENERIC;
1693 }
1694
1695 } while( p_stream->i_idxposc < i_ck );
1696 }
1697
1698 return VLC_SUCCESS;
1699 }
1700
1701 /* XXX FIXME up to now, we assume that all chunk are one after one */
1702 static int AVI_StreamBytesSet( demux_t *p_demux,
1703 unsigned int i_stream,
1704 off_t i_byte )
1705 {
1706 demux_sys_t *p_sys = p_demux->p_sys;
1707 avi_track_t *p_stream = p_sys->track[i_stream];
1708
1709 if( ( p_stream->idx.i_size > 0 )
1710 &&( i_byte < p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_lengthtotal +
1711 p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_length ) )
1712 {
1713 /* index is valid to find the ck */
1714 /* uses dichototmie to be fast enougth */
1715 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->idx.i_size - 1 );
1716 int i_idxmax = p_stream->idx.i_size;
1717 int i_idxmin = 0;
1718 for( ;; )
1719 {
1720 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal > i_byte )
1721 {
1722 i_idxmax = i_idxposc ;
1723 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1724 }
1725 else
1726 {
1727 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal +
1728 p_stream->idx.p_entry[i_idxposc].i_length <= i_byte)
1729 {
1730 i_idxmin = i_idxposc ;
1731 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1732 }
1733 else
1734 {
1735 p_stream->i_idxposc = i_idxposc;
1736 p_stream->i_idxposb = i_byte -
1737 p_stream->idx.p_entry[i_idxposc].i_lengthtotal;
1738 return VLC_SUCCESS;
1739 }
1740 }
1741 }
1742
1743 }
1744 else
1745 {
1746 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1747 p_stream->i_idxposb = 0;
1748 do
1749 {
1750 p_stream->i_idxposc++;
1751 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1752 {
1753 return VLC_EGENERIC;
1754 }
1755
1756 } while( p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal +
1757 p_stream->idx.p_entry[p_stream->i_idxposc].i_length <= i_byte );
1758
1759 p_stream->i_idxposb = i_byte -
1760 p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal;
1761 return VLC_SUCCESS;
1762 }
1763 }
1764
1765 static int AVI_TrackSeek( demux_t *p_demux,
1766 int i_stream,
1767 mtime_t i_date )
1768 {
1769 demux_sys_t *p_sys = p_demux->p_sys;
1770 avi_track_t *tk = p_sys->track[i_stream];
1771
1772 #define p_stream p_sys->track[i_stream]
1773 mtime_t i_oldpts;
1774
1775 i_oldpts = AVI_GetPTS( p_stream );
1776
1777 if( !p_stream->i_samplesize )
1778 {
1779 if( AVI_StreamChunkSet( p_demux,
1780 i_stream,
1781 AVI_PTSToChunk( p_stream, i_date ) ) )
1782 {
1783 return VLC_EGENERIC;
1784 }
1785
1786 if( p_stream->i_cat == AUDIO_ES )
1787 {
1788 unsigned int i;
1789 tk->i_blockno = 0;
1790 for( i = 0; i < tk->i_idxposc; i++ )
1791 {
1792 if( tk->i_blocksize > 0 )
1793 {
1794 tk->i_blockno += ( tk->idx.p_entry[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1795 }
1796 else
1797 {
1798 tk->i_blockno++;
1799 }
1800 }
1801 }
1802
1803 msg_Dbg( p_demux,
1804 "old:%"PRId64" %s new %"PRId64,
1805 i_oldpts,
1806 i_oldpts > i_date ? ">" : "<",
1807 i_date );
1808
1809 if( p_stream->i_cat == VIDEO_ES )
1810 {
1811 /* search key frame */
1812 //if( i_date < i_oldpts || 1 )
1813 {
1814 while( p_stream->i_idxposc > 0 &&
1815 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1816 AVIIF_KEYFRAME ) )
1817 {
1818 if( AVI_StreamChunkSet( p_demux,
1819 i_stream,
1820 p_stream->i_idxposc - 1 ) )
1821 {
1822 return VLC_EGENERIC;
1823 }
1824 }
1825 }
1826 #if 0
1827 else
1828 {
1829 while( p_stream->i_idxposc < p_stream->idx.i_size &&
1830 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1831 AVIIF_KEYFRAME ) )
1832 {
1833 if( AVI_StreamChunkSet( p_demux,
1834 i_stream,
1835 p_stream->i_idxposc + 1 ) )
1836 {
1837 return VLC_EGENERIC;
1838 }
1839 }
1840 }
1841 #endif
1842 }
1843 }
1844 else
1845 {
1846 if( AVI_StreamBytesSet( p_demux,
1847 i_stream,
1848 AVI_PTSToByte( p_stream, i_date ) ) )
1849 {
1850 return VLC_EGENERIC;
1851 }
1852 }
1853 return VLC_SUCCESS;
1854 #undef p_stream
1855 }
1856
1857 /****************************************************************************
1858 * Return true if it's a key frame
1859 ****************************************************************************/
1860 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1861 {
1862 switch( i_fourcc )
1863 {
1864 case VLC_CODEC_DIV1:
1865 /* we have:
1866 * startcode: 0x00000100 32bits
1867 * framenumber ? 5bits
1868 * piture type 0(I),1(P) 2bits
1869 */
1870 if( GetDWBE( p_byte ) != 0x00000100 )
1871 {
1872 /* it's not an msmpegv1 stream, strange...*/
1873 return AVIIF_KEYFRAME;
1874 }
1875 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1876
1877 case VLC_CODEC_DIV2:
1878 case VLC_CODEC_DIV3:
1879 case VLC_CODEC_WMV1:
1880 /* we have
1881 * picture type 0(I),1(P) 2bits
1882 */
1883 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1884 case VLC_CODEC_MP4V:
1885 /* we should find first occurrence of 0x000001b6 (32bits)
1886 * startcode: 0x000001b6 32bits
1887 * piture type 0(I),1(P) 2bits
1888 */
1889 if( GetDWBE( p_byte ) != 0x000001b6 )
1890 {
1891 /* not true , need to find the first VOP header */
1892 return AVIIF_KEYFRAME;
1893 }
1894 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1895
1896 default:
1897 /* I can't do it, so say yes */
1898 return AVIIF_KEYFRAME;
1899 }
1900 }
1901
1902 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1903 {
1904 switch( i_cat )
1905 {
1906 case AUDIO_ES:
1907 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1908 return i_codec;
1909 case VIDEO_ES:
1910 return vlc_fourcc_GetCodec( i_cat, i_codec );
1911 default:
1912 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1913 }
1914 }
1915
1916 /****************************************************************************
1917 *
1918 ****************************************************************************/
1919 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1920 unsigned int *pi_number, unsigned int *pi_type )
1921 {
1922 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1923 int c1, c2;
1924
1925 c1 = ((uint8_t *)&i_id)[0];
1926 c2 = ((uint8_t *)&i_id)[1];
1927
1928 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1929 {
1930 SET_PTR( pi_number, 100 ); /* > max stream number */
1931 SET_PTR( pi_type, UNKNOWN_ES );
1932 }
1933 else
1934 {
1935 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1936 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1937 {
1938 case AVITWOCC_wb:
1939 SET_PTR( pi_type, AUDIO_ES );
1940 break;
1941 case AVITWOCC_dc:
1942 case AVITWOCC_db:
1943 case AVITWOCC_AC:
1944 SET_PTR( pi_type, VIDEO_ES );
1945 break;
1946 case AVITWOCC_tx:
1947 case AVITWOCC_sb:
1948 SET_PTR( pi_type, SPU_ES );
1949 break;
1950 default:
1951 SET_PTR( pi_type, UNKNOWN_ES );
1952 break;
1953 }
1954 }
1955 #undef SET_PTR
1956 }
1957
1958 /****************************************************************************
1959 *
1960 ****************************************************************************/
1961 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1962 {
1963 const uint8_t *p_peek;
1964
1965 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1966 {
1967 return VLC_EGENERIC;
1968 }
1969 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1970 p_pk->i_size = GetDWLE( p_peek + 4 );
1971 p_pk->i_pos = stream_Tell( p_demux->s );
1972 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1973 {
1974 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1975 p_peek[10], p_peek[11] );
1976 }
1977 else
1978 {
1979 p_pk->i_type = 0;
1980 }
1981
1982 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1983
1984 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1985 return VLC_SUCCESS;
1986 }
1987
1988 static int AVI_PacketNext( demux_t *p_demux )
1989 {
1990 avi_packet_t avi_ck;
1991 int i_skip = 0;
1992
1993 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1994 {
1995 return VLC_EGENERIC;
1996 }
1997
1998 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1999 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2000 {
2001 i_skip = 12;
2002 }
2003 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2004 avi_ck.i_type == AVIFOURCC_AVIX )
2005 {
2006 i_skip = 24;
2007 }
2008 else
2009 {
2010 i_skip = __EVEN( avi_ck.i_size ) + 8;
2011 }
2012
2013 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2014 {
2015 return VLC_EGENERIC;
2016 }
2017 return VLC_SUCCESS;
2018 }
2019
2020 static int AVI_PacketRead( demux_t *p_demux,
2021 avi_packet_t *p_pk,
2022 block_t **pp_frame )
2023 {
2024 size_t i_size;
2025
2026 i_size = __EVEN( p_pk->i_size + 8 );
2027
2028 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2029 {
2030 return VLC_EGENERIC;
2031 }
2032 (*pp_frame)->p_buffer += 8;
2033 (*pp_frame)->i_buffer -= 8;
2034
2035 if( i_size != p_pk->i_size + 8 )
2036 {
2037 (*pp_frame)->i_buffer--;
2038 }
2039
2040 return VLC_SUCCESS;
2041 }
2042
2043 static int AVI_PacketSearch( demux_t *p_demux )
2044 {
2045 demux_sys_t *p_sys = p_demux->p_sys;
2046 avi_packet_t avi_pk;
2047 int i_count = 0;
2048
2049 for( ;; )
2050 {
2051 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2052 {
2053 return VLC_EGENERIC;
2054 }
2055 AVI_PacketGetHeader( p_demux, &avi_pk );
2056 if( avi_pk.i_stream < p_sys->i_track &&
2057 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2058 {
2059 return VLC_SUCCESS;
2060 }
2061 switch( avi_pk.i_fourcc )
2062 {
2063 case AVIFOURCC_JUNK:
2064 case AVIFOURCC_LIST:
2065 case AVIFOURCC_RIFF:
2066 case AVIFOURCC_idx1:
2067 return VLC_SUCCESS;
2068 }
2069
2070 /* Prevents from eating all the CPU with broken files.
2071 * This value should be low enough so that it doesn't affect the
2072 * reading speed too much (not that we care much anyway because
2073 * this code is called only on broken files). */
2074 if( !(++i_count % 1024) )
2075 {
2076 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2077
2078 msleep( 10000 );
2079 if( !(i_count % (1024 * 10)) )
2080 msg_Warn( p_demux, "trying to resync..." );
2081 }
2082 }
2083 }
2084
2085 /****************************************************************************
2086 * Index stuff.
2087 ****************************************************************************/
2088 static void avi_index_Init( avi_index_t *p_index )
2089 {
2090 p_index->i_size = 0;
2091 p_index->i_max = 0;
2092 p_index->p_entry = NULL;
2093 }
2094 static void avi_index_Clean( avi_index_t *p_index )
2095 {
2096 free( p_index->p_entry );
2097 }
2098 static void avi_index_Append( avi_index_t *p_index, off_t *pi_last_pos,
2099 avi_entry_t *p_entry )
2100 {
2101 /* Update last chunk position */
2102 if( *pi_last_pos < p_entry->i_pos )
2103 *pi_last_pos = p_entry->i_pos;
2104
2105 /* add the entry */
2106 if( p_index->i_size >= p_index->i_max )
2107 {
2108 p_index->i_max += 16384;
2109 p_index->p_entry = realloc_or_free( p_index->p_entry,
2110 p_index->i_max * sizeof( *p_index->p_entry ) );
2111 if( !p_index->p_entry )
2112 return;
2113 }
2114 /* calculate cumulate length */
2115 if( p_index->i_size > 0 )
2116 {
2117 p_entry->i_lengthtotal =
2118 p_index->p_entry[p_index->i_size - 1].i_length +
2119 p_index->p_entry[p_index->i_size - 1].i_lengthtotal;
2120 }
2121 else
2122 {
2123 p_entry->i_lengthtotal = 0;
2124 }
2125
2126 p_index->p_entry[p_index->i_size++] = *p_entry;
2127 }
2128
2129 static int AVI_IndexFind_idx1( demux_t *p_demux,
2130 avi_chunk_idx1_t **pp_idx1,
2131 uint64_t *pi_offset )
2132 {
2133 demux_sys_t *p_sys = p_demux->p_sys;
2134
2135 avi_chunk_list_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2136 avi_chunk_idx1_t *p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2137
2138 if( !p_idx1 )
2139 {
2140 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2141 return VLC_EGENERIC;
2142 }
2143 *pp_idx1 = p_idx1;
2144
2145 /* *** calculate offset *** */
2146 /* Well, avi is __SHIT__ so test more than one entry
2147 * (needed for some avi files) */
2148 avi_chunk_list_t *p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2149 *pi_offset = 0;
2150 for( unsigned i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2151 {
2152 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2153 {
2154 *pi_offset = p_movi->i_chunk_pos + 8;
2155 break;
2156 }
2157 }
2158 return VLC_SUCCESS;
2159 }
2160
2161 static int AVI_IndexLoad_idx1( demux_t *p_demux,
2162 avi_index_t p_index[], off_t *pi_last_offset )
2163 {
2164 demux_sys_t *p_sys = p_demux->p_sys;
2165
2166 avi_chunk_idx1_t *p_idx1;
2167 uint64_t i_offset;
2168 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2169 return VLC_EGENERIC;
2170
2171 for( unsigned i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2172 {
2173 unsigned i_cat;
2174 unsigned i_stream;
2175
2176 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2177 &i_stream,
2178 &i_cat );
2179 if( i_stream < p_sys->i_track &&
2180 i_cat == p_sys->track[i_stream]->i_cat )
2181 {
2182 avi_entry_t index;
2183 index.i_id = p_idx1->entry[i_index].i_fourcc;
2184 index.i_flags = p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2185 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2186 index.i_length = p_idx1->entry[i_index].i_length;
2187
2188 avi_index_Append( &p_index[i_stream], pi_last_offset, &index );
2189 }
2190 }
2191 return VLC_SUCCESS;
2192 }
2193
2194 static void __Parse_indx( demux_t *p_demux, avi_index_t *p_index, off_t *pi_max_offset,
2195 avi_chunk_indx_t *p_indx )
2196 {
2197 avi_entry_t index;
2198
2199 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2200 if( p_indx->i_indexsubtype == 0 )
2201 {
2202 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2203 {
2204 index.i_id = p_indx->i_id;
2205 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2206 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2207 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2208
2209 avi_index_Append( p_index, pi_max_offset, &index );
2210 }
2211 }
2212 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2213 {
2214 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2215 {
2216 index.i_id = p_indx->i_id;
2217 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2218 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2219 index.i_length = p_indx->idx.field[i].i_size;
2220
2221 avi_index_Append( p_index, pi_max_offset, &index );
2222 }
2223 }
2224 else
2225 {
2226 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2227 }
2228 }
2229
2230 static void AVI_IndexLoad_indx( demux_t *p_demux,
2231 avi_index_t p_index[], off_t *pi_last_offset )
2232 {
2233 demux_sys_t *p_sys = p_demux->p_sys;
2234
2235 avi_chunk_list_t *p_riff;
2236 avi_chunk_list_t *p_hdrl;
2237
2238 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2239 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2240
2241 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2242 {
2243 avi_chunk_list_t *p_strl;
2244 avi_chunk_indx_t *p_indx;
2245
2246 #define p_stream p_sys->track[i_stream]
2247 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2248 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2249
2250 if( !p_indx )
2251 {
2252 if( p_sys->b_odml )
2253 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2254 "file?)" );
2255 continue;
2256 }
2257
2258 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2259 {
2260 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, p_indx );
2261 }
2262 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2263 {
2264 avi_chunk_t ck_sub;
2265 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2266 {
2267 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2268 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2269 {
2270 break;
2271 }
2272 if( ck_sub.indx.i_indextype == AVI_INDEX_OF_CHUNKS )
2273 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, &ck_sub.indx );
2274 AVI_ChunkFree( p_demux->s, &ck_sub );
2275 }
2276 }
2277 else
2278 {
2279 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2280 }
2281 #undef p_stream
2282 }
2283 }
2284
2285 static void AVI_IndexLoad( demux_t *p_demux )
2286 {
2287 demux_sys_t *p_sys = p_demux->p_sys;
2288
2289 /* Load indexes */
2290 assert( p_sys->i_track <= 100 );
2291 avi_index_t p_idx_indx[p_sys->i_track];
2292 avi_index_t p_idx_idx1[p_sys->i_track];
2293 for( unsigned i = 0; i < p_sys->i_track; i++ )
2294 {
2295 avi_index_Init( &p_idx_indx[i] );
2296 avi_index_Init( &p_idx_idx1[i] );
2297 }
2298 off_t i_indx_last_pos = p_sys->i_movi_lastchunk_pos;
2299 off_t i_idx1_last_pos = p_sys->i_movi_lastchunk_pos;
2300
2301 AVI_IndexLoad_indx( p_demux, p_idx_indx, &i_indx_last_pos );
2302 if( !p_sys->b_odml )
2303 AVI_IndexLoad_idx1( p_demux, p_idx_idx1, &i_idx1_last_pos );
2304
2305 /* Select the longest index */
2306 for( unsigned i = 0; i < p_sys->i_track; i++ )
2307 {
2308 if( p_idx_indx[i].i_size > p_idx_idx1[i].i_size )
2309 {
2310 msg_Dbg( p_demux, "selected ODML index for stream[%u]", i );
2311 p_sys->track[i]->idx = p_idx_indx[i];
2312 avi_index_Clean( &p_idx_idx1[i] );
2313 }
2314 else
2315 {
2316 msg_Dbg( p_demux, "selected standard index for stream[%u]", i );
2317 p_sys->track[i]->idx = p_idx_idx1[i];
2318 avi_index_Clean( &p_idx_indx[i] );
2319 }
2320 }
2321 p_sys->i_movi_lastchunk_pos = __MAX( i_indx_last_pos, i_idx1_last_pos );
2322
2323 for( unsigned i = 0; i < p_sys->i_track; i++ )
2324 {
2325 avi_index_t *p_index = &p_sys->track[i]->idx;
2326
2327 /* Fix key flag */
2328 bool b_key = false;
2329 for( unsigned j = 0; !b_key && j < p_index->i_size; j++ )
2330 b_key = p_index->p_entry[j].i_flags & AVIIF_KEYFRAME;
2331 if( !b_key )
2332 {
2333 msg_Err( p_demux, "no key frame set for track %u", i );
2334 for( unsigned j = 0; j < p_index->i_size; j++ )
2335 p_index->p_entry[j].i_flags |= AVIIF_KEYFRAME;
2336 }
2337
2338 /* */
2339 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2340 i, p_index->i_size );
2341 }
2342 }
2343
2344 static void AVI_IndexCreate( demux_t *p_demux )
2345 {
2346 demux_sys_t *p_sys = p_demux->p_sys;
2347
2348 avi_chunk_list_t *p_riff;
2349 avi_chunk_list_t *p_movi;
2350
2351 unsigned int i_stream;
2352 off_t i_movi_end;
2353
2354 mtime_t i_dialog_update;
2355 dialog_progress_bar_t *p_dialog = NULL;
2356
2357 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2358 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2359
2360 if( !p_movi )
2361 {
2362 msg_Err( p_demux, "cannot find p_movi" );
2363 return;
2364 }
2365
2366 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2367 avi_index_Init( &p_sys->track[i_stream]->idx );
2368
2369 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2370 stream_Size( p_demux->s ) );
2371
2372 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2373 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2374
2375
2376 /* Only show dialog if AVI is > 10MB */
2377 i_dialog_update = mdate();
2378 if( stream_Size( p_demux->s ) > 10000000 )
2379 p_dialog = dialog_ProgressCreate( p_demux, _("Fixing AVI Index..."),
2380 NULL, _("Cancel") );
2381
2382 for( ;; )
2383 {
2384 avi_packet_t pk;
2385
2386 if( !vlc_object_alive (p_demux) )
2387 break;
2388
2389 /* Don't update/check dialog too often */
2390 if( p_dialog && mdate() - i_dialog_update > 100000 )
2391 {
2392 if( dialog_ProgressCancelled( p_dialog ) )
2393 break;
2394
2395 double f_current = stream_Tell( p_demux->s );
2396 double f_size = stream_Size( p_demux->s );
2397 double f_pos = f_current / f_size;
2398 dialog_ProgressSet( p_dialog, NULL, f_pos );
2399
2400 i_dialog_update = mdate();
2401 }
2402
2403 if( AVI_PacketGetHeader( p_demux, &pk ) )
2404 break;
2405
2406 if( pk.i_stream < p_sys->i_track &&
2407 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2408 {
2409 avi_track_t *tk = p_sys->track[pk.i_stream];
2410
2411 avi_entry_t index;
2412 index.i_id = pk.i_fourcc;
2413 index.i_flags = AVI_GetKeyFlag(tk->i_codec, pk.i_peek);
2414 index.i_pos = pk.i_pos;
2415 index.i_length = pk.i_size;
2416 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
2417 }
2418 else
2419 {
2420 switch( pk.i_fourcc )
2421 {
2422 case AVIFOURCC_idx1:
2423 if( p_sys->b_odml )
2424 {
2425 avi_chunk_list_t *p_sysx;
2426 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2427 AVIFOURCC_RIFF, 1 );
2428
2429 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2430 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2431 goto print_stat;
2432 break;
2433 }
2434 goto print_stat;
2435
2436 case AVIFOURCC_RIFF:
2437 msg_Dbg( p_demux, "new RIFF chunk found" );
2438 break;
2439
2440 case AVIFOURCC_rec:
2441 case AVIFOURCC_JUNK:
2442 break;
2443
2444 default:
2445 msg_Warn( p_demux, "need resync, probably broken avi" );
2446 if( AVI_PacketSearch( p_demux ) )
2447 {
2448 msg_Warn( p_demux, "lost sync, abord index creation" );
2449 goto print_stat;
2450 }
2451 }
2452 }
2453
2454 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2455 AVI_PacketNext( p_demux ) )
2456 {
2457 break;
2458 }
2459 }
2460
2461 print_stat:
2462 if( p_dialog != NULL )
2463 dialog_ProgressDestroy( p_dialog );
2464
2465 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2466 {
2467 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2468 i_stream, p_sys->track[i_stream]->idx.i_size );
2469 }
2470 }
2471
2472 /* */
2473 static void AVI_MetaLoad( demux_t *p_demux,
2474 avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih )
2475 {
2476 demux_sys_t *p_sys = p_demux->p_sys;
2477
2478 vlc_meta_t *p_meta = p_sys->meta = vlc_meta_New();
2479 if( !p_meta )
2480 return;
2481
2482 char buffer[200];
2483 snprintf( buffer, sizeof(buffer), "%s%s%s%s",
2484 p_avih->i_flags&AVIF_HASINDEX ? " HAS_INDEX" : "",
2485 p_avih->i_flags&AVIF_MUSTUSEINDEX ? " MUST_USE_INDEX" : "",
2486 p_avih->i_flags&AVIF_ISINTERLEAVED ? " IS_INTERLEAVED" : "",
2487 p_avih->i_flags&AVIF_TRUSTCKTYPE ? " TRUST_CKTYPE" : "" );
2488 vlc_meta_SetSetting( p_meta, buffer );
2489
2490 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0 );
2491 if( !p_info )
2492 return;
2493
2494 static const struct {
2495 vlc_fourcc_t i_id;
2496 int i_type;
2497 } p_dsc[] = {
2498 { AVIFOURCC_IART, vlc_meta_Artist },
2499 { AVIFOURCC_ICMT, vlc_meta_Description },
2500 { AVIFOURCC_ICOP, vlc_meta_Copyright },
2501 { AVIFOURCC_IGNR, vlc_meta_Genre },
2502 { AVIFOURCC_INAM, vlc_meta_Title },
2503 { 0, -1 }
2504 };
2505 for( int i = 0; p_dsc[i].i_id != 0; i++ )
2506 {
2507 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_dsc[i].i_id, 0 );
2508 if( !p_strz )
2509 continue;
2510 char *psz_value = FromACP( p_strz->p_str );
2511 if( !psz_value )
2512 continue;
2513
2514 if( *psz_value )
2515 vlc_meta_Set( p_meta, p_dsc[i].i_type, psz_value );
2516 free( psz_value );
2517 }
2518 }
2519
2520 /*****************************************************************************
2521 * Subtitles
2522 *****************************************************************************/
2523 static void AVI_ExtractSubtitle( demux_t *p_demux,
2524 unsigned int i_stream,
2525 avi_chunk_list_t *p_strl,
2526 avi_chunk_STRING_t *p_strn )
2527 {
2528 demux_sys_t *p_sys = p_demux->p_sys;
2529 block_t *p_block = NULL;
2530 input_attachment_t *p_attachment = NULL;
2531 char *psz_description = NULL;
2532 avi_chunk_indx_t *p_indx = NULL;
2533
2534 if( !p_sys->b_seekable )
2535 goto exit;
2536
2537 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2538 avi_chunk_t ck;
2539 int64_t i_position;
2540 unsigned i_size;
2541 if( p_indx )
2542 {
2543 if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES &&
2544 p_indx->i_entriesinuse > 0 )
2545 {
2546 if( stream_Seek( p_demux->s, p_indx->idx.super[0].i_offset )||
2547 AVI_ChunkRead( p_demux->s, &ck, NULL ) )
2548 goto exit;
2549 p_indx = &ck.indx;
2550 }
2551
2552 if( p_indx->i_indextype != AVI_INDEX_OF_CHUNKS ||
2553 p_indx->i_entriesinuse != 1 ||
2554 p_indx->i_indexsubtype != 0 )
2555 goto exit;
2556
2557 i_position = p_indx->i_baseoffset +
2558 p_indx->idx.std[0].i_offset - 8;
2559 i_size = (p_indx->idx.std[0].i_size & 0x7fffffff) + 8;
2560 }
2561 else
2562 {
2563 avi_chunk_idx1_t *p_idx1;
2564 uint64_t i_offset;
2565
2566 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2567 goto exit;
2568
2569 i_size = 0;
2570 for( unsigned i = 0; i < p_idx1->i_entry_count; i++ )
2571 {
2572 const idx1_entry_t *e = &p_idx1->entry[i];
2573 unsigned i_cat;
2574 unsigned i_stream_idx;
2575
2576 AVI_ParseStreamHeader( e->i_fourcc, &i_stream_idx, &i_cat );
2577 if( i_cat == SPU_ES && i_stream_idx == i_stream )
2578 {
2579 i_position = e->i_pos + i_offset;
2580 i_size = e->i_length + 8;
2581 break;
2582 }
2583 }
2584 if( i_size <= 0 )
2585 goto exit;
2586 }
2587
2588 /* */
2589 if( i_size > 1000000 )
2590 goto exit;
2591
2592 if( stream_Seek( p_demux->s, i_position ) )
2593 goto exit;
2594 p_block = stream_Block( p_demux->s, i_size );
2595 if( !p_block )
2596 goto exit;
2597
2598 /* Parse packet header */
2599 const uint8_t *p = p_block->p_buffer;
2600 if( i_size < 8 || p[2] != 't' || p[3] != 'x' )
2601 goto exit;
2602 p += 8;
2603 i_size -= 8;
2604
2605 /* Parse subtitle chunk header */
2606 if( i_size < 11 || memcmp( p, "GAB2", 4 ) ||
2607 p[4] != 0x00 || GetWLE( &p[5] ) != 0x2 )
2608 goto exit;
2609 const unsigned i_name = GetDWLE( &p[7] );
2610 if( 11 + i_size <= i_name )
2611 goto exit;
2612 if( i_name > 0 )
2613 psz_description = FromCharset( "UTF-16LE", &p[11], i_name );
2614 p += 11 + i_name;
2615 i_size -= 11 + i_name;
2616 if( i_size < 6 || GetWLE( &p[0] ) != 0x04 )
2617 goto exit;
2618 const unsigned i_payload = GetDWLE( &p[2] );
2619 if( i_size < 6 + i_payload || i_payload <= 0 )
2620 goto exit;
2621 p += 6;
2622 i_size -= 6;
2623
2624 if( !psz_description )
2625 psz_description = p_strn ? FromACP( p_strn->p_str ) : NULL;
2626 char *psz_name;
2627 if( asprintf( &psz_name, "subtitle%d.srt", p_sys->i_attachment ) <= 0 )
2628 psz_name = NULL;
2629 p_attachment = vlc_input_attachment_New( psz_name,
2630 "application/x-srt",
2631 psz_description,
2632 p, i_payload );
2633 if( p_attachment )
2634 TAB_APPEND( p_sys->i_attachment, p_sys->attachment, p_attachment );
2635 free( psz_name );
2636
2637 exit:
2638 free( psz_description );
2639
2640 if( p_block )
2641 block_Release( p_block );
2642
2643 if( p_attachment )
2644 msg_Dbg( p_demux, "Loaded an embed subtitle" );
2645 else
2646 msg_Warn( p_demux, "Failed to load an embed subtitle" );
2647
2648 if( p_indx == &ck.indx )
2649 AVI_ChunkFree( p_demux->s, &ck );
2650 }
2651 /*****************************************************************************
2652 * Stream management
2653 *****************************************************************************/
2654 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2655 {
2656 demux_sys_t *p_sys = p_demux->p_sys;
2657 unsigned int i;
2658 int b_end = true;
2659
2660 for( i = 0; i < p_sys->i_track; i++ )
2661 {
2662 avi_track_t *tk = p_sys->track[i];
2663 if( tk->i_idxposc >= tk->idx.i_size )
2664 {
2665 tk->b_eof = true;
2666 }
2667 else
2668 {
2669 b_end = false;
2670 }
2671 }
2672 return( b_end );
2673 }
2674
2675 /****************************************************************************
2676 * AVI_MovieGetLength give max streams length in second
2677 ****************************************************************************/
2678 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2679 {
2680 demux_sys_t *p_sys = p_demux->p_sys;
2681 mtime_t i_maxlength = 0;
2682 unsigned int i;
2683
2684 for( i = 0; i < p_sys->i_track; i++ )
2685 {
2686 avi_track_t *tk = p_sys->track[i];
2687 mtime_t i_length;
2688
2689 /* fix length for each stream */
2690 if( tk->idx.i_size < 1 || !tk->idx.p_entry )
2691 {
2692 continue;
2693 }
2694
2695 if( tk->i_samplesize )
2696 {
2697 i_length = AVI_GetDPTS( tk,
2698 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal +
2699 tk->idx.p_entry[tk->idx.i_size-1].i_length );
2700 }
2701 else
2702 {
2703 i_length = AVI_GetDPTS( tk, tk->idx.i_size );
2704 }
2705 i_length /= (mtime_t)1000000; /* in seconds */
2706
2707 msg_Dbg( p_demux,
2708 "stream[%d] length:%"PRId64" (based on index)",
2709 i,
2710 i_length );
2711 i_maxlength = __MAX( i_maxlength, i_length );
2712 }
2713
2714 return i_maxlength;
2715 }
[GSoC_2011] OpenGL Interface for VLC