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AVI: better debug message, notably in extended case
[vlc/vlc-skelet.git] / modules / demux / avi / avi.c
blob4a1d49108aeecc3765b9477e057e642da177d9fa
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 - %s) %d channels %dHz %dbits",
447 i, p_auds->p_wf->wFormatTag,vlc_fourcc_GetDescription(AUDIO_ES,tk->i_codec),
448 p_auds->p_wf->nChannels,
449 p_auds->p_wf->nSamplesPerSec,
450 p_auds->p_wf->wBitsPerSample );
451
452 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
453 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
454 if( fmt.i_extra > 0 )
455 {
456 fmt.p_extra = malloc( fmt.i_extra );
457 if( !fmt.p_extra ) goto error;
458 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
459 }
460 break;
461
462 case( AVIFOURCC_vids ):
463 tk->i_cat = VIDEO_ES;
464 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
465 p_vids->p_bih->biCompression );
466 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
467 {
468 msg_Dbg( p_demux, "stream[%d] subtitles", i );
469 es_format_Init( &fmt, SPU_ES, p_vids->p_bih->biCompression );
470 tk->i_cat = SPU_ES;
471 break;
472 }
473 else if( p_vids->p_bih->biCompression == 0x00 )
474 {
475 switch( p_vids->p_bih->biBitCount )
476 {
477 case 32:
478 tk->i_codec = VLC_CODEC_RGB32;
479 break;
480 case 24:
481 tk->i_codec = VLC_CODEC_RGB24;
482 break;
483 case 16: /* Yes it is RV15 */
484 case 15:
485 tk->i_codec = VLC_CODEC_RGB15;
486 break;
487 case 9: /* <- TODO check that */
488 tk->i_codec = VLC_CODEC_I410;
489 break;
490 case 8: /* <- TODO check that */
491 tk->i_codec = VLC_CODEC_GREY;
492 break;
493 }
494 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
495
496 switch( tk->i_codec )
497 {
498 case VLC_CODEC_RGB24:
499 case VLC_CODEC_RGB32:
500 fmt.video.i_rmask = 0x00ff0000;
501 fmt.video.i_gmask = 0x0000ff00;
502 fmt.video.i_bmask = 0x000000ff;
503 break;
504 case VLC_CODEC_RGB15:
505 fmt.video.i_rmask = 0x7c00;
506 fmt.video.i_gmask = 0x03e0;
507 fmt.video.i_bmask = 0x001f;
508 break;
509 default:
510 break;
511 }
512 }
513 else
514 {
515 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
516 if( tk->i_codec == VLC_CODEC_MP4V &&
517 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
518 {
519 fmt.i_codec =
520 fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
521 }
522 }
523 tk->i_samplesize = 0;
524 fmt.video.i_width = p_vids->p_bih->biWidth;
525 fmt.video.i_height = p_vids->p_bih->biHeight;
526 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
527 fmt.video.i_frame_rate = tk->i_rate;
528 fmt.video.i_frame_rate_base = tk->i_scale;
529 fmt.i_extra =
530 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
531 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
532 if( fmt.i_extra > 0 )
533 {
534 fmt.p_extra = malloc( fmt.i_extra );
535 if( !fmt.p_extra ) goto error;
536 memcpy( fmt.p_extra, &p_vids->p_bih[1], fmt.i_extra );
537 }
538
539 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
540 i, (char*)&p_vids->p_bih->biCompression,
541 (uint32_t)p_vids->p_bih->biWidth,
542 (uint32_t)p_vids->p_bih->biHeight,
543 p_vids->p_bih->biBitCount,
544 (float)tk->i_rate/(float)tk->i_scale );
545
546 if( p_vids->p_bih->biCompression == 0x00 )
547 {
548 /* RGB DIB are coded from bottom to top */
549 fmt.video.i_height =
550 (unsigned int)(-(int)p_vids->p_bih->biHeight);
551 }
552
553 /* Extract palette from extradata if bpp <= 8
554 * (assumes that extradata contains only palette but appears
555 * to be true for all palettized codecs we support) */
556 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
557 {
558 /* The palette is not always included in biSize */
559 fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
560 if( fmt.i_extra > 0 )
561 {
562 const uint8_t *p_pal = fmt.p_extra;
563
564 fmt.video.p_palette = calloc( 1, sizeof(video_palette_t) );
565 fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
566
567 for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
568 {
569 for( int j = 0; j < 4; j++ )
570 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
571 }
572 }
573 }
574 break;
575
576 case( AVIFOURCC_txts):
577 msg_Dbg( p_demux, "stream[%d] subtitle attachment", i );
578 AVI_ExtractSubtitle( p_demux, i, p_strl, p_strn );
579 free( tk );
580 continue;
581
582 case( AVIFOURCC_iavs):
583 case( AVIFOURCC_ivas):
584 p_sys->b_muxed = true;
585 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
586 if( p_strh->i_handler == FOURCC_dvsd ||
587 p_strh->i_handler == FOURCC_dvhd ||
588 p_strh->i_handler == FOURCC_dvsl ||
589 p_strh->i_handler == FOURCC_dv25 ||
590 p_strh->i_handler == FOURCC_dv50 )
591 {
592 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
593 if( !tk->p_out_muxed )
594 msg_Err( p_demux, "could not load the DV parser" );
595 else break;
596 }
597 free( tk );
598 continue;
599
600 case( AVIFOURCC_mids):
601 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
602
603 default:
604 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
605 free( tk );
606 continue;
607 }
608 if( p_strn )
609 fmt.psz_description = FromACP( p_strn->p_str );
610 if( tk->p_out_muxed == NULL )
611 tk->p_es = es_out_Add( p_demux->out, &fmt );
612 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
613 if(!p_sys->b_muxed )
614 {
615 es_format_Clean( &fmt );
616 }
617 }
618
619 if( p_sys->i_track <= 0 )
620 {
621 msg_Err( p_demux, "no valid track" );
622 goto error;
623 }
624
625 i_do_index = var_InheritInteger( p_demux, "avi-index" );
626 if( i_do_index == 1 ) /* Always fix */
627 {
628 aviindex:
629 if( p_sys->b_seekable )
630 {
631 AVI_IndexCreate( p_demux );
632 }
633 else
634 {
635 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
636 AVI_IndexLoad( p_demux );
637 }
638 }
639 else
640 {
641 AVI_IndexLoad( p_demux );
642 }
643
644 /* *** movie length in sec *** */
645 p_sys->i_length = AVI_MovieGetLength( p_demux );
646
647 /* Check the index completeness */
648 unsigned int i_idx_totalframes = 0;
649 for( unsigned int i = 0; i < p_sys->i_track; i++ )
650 {
651 const avi_track_t *tk = p_sys->track[i];
652 if( tk->i_cat == VIDEO_ES && tk->idx.p_entry )
653 i_idx_totalframes = __MAX(i_idx_totalframes, tk->idx.i_size);
654 continue;
655 }
656 if( i_idx_totalframes != p_avih->i_totalframes &&
657 p_sys->i_length < (mtime_t)p_avih->i_totalframes *
658 (mtime_t)p_avih->i_microsecperframe /
659 (mtime_t)1000000 )
660 {
661 if( !vlc_object_alive( p_demux) )
662 goto error;
663
664 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
665 "approximative or will exhibit strange behavior" );
666 if( i_do_index == 0 && !b_index )
667 {
668 if( !p_sys->b_seekable ) {
669 b_index = true;
670 goto aviindex;
671 }
672 switch( dialog_Question( p_demux, _("Broken or missing AVI Index") ,
673 _( "Because this AVI file index is broken or missing, "
674 "seeking will not work correctly.\n"
675 "VLC won't repair your file but can temporary fix this "
676 "problem by building an index in memory.\n"
677 "This step might take a long time on a large file.\n"
678 "What do you want to do ?" ),
679 _( "Build index then play" ), _( "Play as is" ), _( "Do not play") ) )
680 {
681 case 1:
682 b_index = true;
683 msg_Dbg( p_demux, "Fixing AVI index" );
684 goto aviindex;
685 case 3:
686 /* Kill input */
687 vlc_object_kill( p_demux->p_parent );
688 goto error;
689 }
690 }
691 }
692
693 /* fix some BeOS MediaKit generated file */
694 for( i = 0 ; i < p_sys->i_track; i++ )
695 {
696 avi_track_t *tk = p_sys->track[i];
697 avi_chunk_list_t *p_strl;
698 avi_chunk_strh_t *p_strh;
699 avi_chunk_strf_auds_t *p_auds;
700
701 if( tk->i_cat != AUDIO_ES )
702 {
703 continue;
704 }
705 if( tk->idx.i_size < 1 ||
706 tk->i_scale != 1 ||
707 tk->i_samplesize != 0 )
708 {
709 continue;
710 }
711 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
712 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
713 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
714
715 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
716 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
717 {
718 int64_t i_track_length =
719 tk->idx.p_entry[tk->idx.i_size-1].i_length +
720 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal;
721 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
722 (mtime_t)p_avih->i_microsecperframe;
723
724 if( i_length == 0 )
725 {
726 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
727 continue;
728 }
729 tk->i_samplesize = 1;
730 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
731 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
732 }
733 }
734
735 if( p_sys->b_seekable )
736 {
737 /* we have read all chunk so go back to movi */
738 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
739 }
740 /* Skip movi header */
741 stream_Read( p_demux->s, NULL, 12 );
742
743 p_sys->i_movi_begin = p_movi->i_chunk_pos;
744 return VLC_SUCCESS;
745
746 error:
747 for( unsigned i = 0; i < p_sys->i_attachment; i++)
748 vlc_input_attachment_Delete(p_sys->attachment[i]);
749 free(p_sys->attachment);
750
751 if( p_sys->meta )
752 vlc_meta_Delete( p_sys->meta );
753
754 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
755 free( p_sys );
756 return vlc_object_alive( p_demux ) ? VLC_EGENERIC : VLC_ETIMEOUT;
757 }
758
759 /*****************************************************************************
760 * Close: frees unused data
761 *****************************************************************************/
762 static void Close ( vlc_object_t * p_this )
763 {
764 demux_t * p_demux = (demux_t *)p_this;
765 unsigned int i;
766 demux_sys_t *p_sys = p_demux->p_sys ;
767
768 for( i = 0; i < p_sys->i_track; i++ )
769 {
770 if( p_sys->track[i] )
771 {
772 if( p_sys->track[i]->p_out_muxed )
773 stream_Delete( p_sys->track[i]->p_out_muxed );
774 avi_index_Clean( &p_sys->track[i]->idx );
775 free( p_sys->track[i] );
776 }
777 }
778 free( p_sys->track );
779 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
780 vlc_meta_Delete( p_sys->meta );
781 for( unsigned i = 0; i < p_sys->i_attachment; i++)
782 vlc_input_attachment_Delete(p_sys->attachment[i]);
783 free(p_sys->attachment);
784
785 free( p_sys );
786 }
787
788 /*****************************************************************************
789 * Demux_Seekable: reads and demuxes data packets for stream seekable
790 *****************************************************************************
791 * AVIDemux: reads and demuxes data packets
792 *****************************************************************************
793 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
794 *****************************************************************************/
795 typedef struct
796 {
797 bool b_ok;
798
799 int i_toread;
800
801 off_t i_posf; /* where we will read :
802 if i_idxposb == 0 : begining of chunk (+8 to acces data)
803 else : point on data directly */
804 } avi_track_toread_t;
805
806 static int Demux_Seekable( demux_t *p_demux )
807 {
808 demux_sys_t *p_sys = p_demux->p_sys;
809
810 unsigned int i_track_count = 0;
811 unsigned int i_track;
812 /* cannot be more than 100 stream (dcXX or wbXX) */
813 avi_track_toread_t toread[100];
814
815
816 /* detect new selected/unselected streams */
817 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
818 {
819 avi_track_t *tk = p_sys->track[i_track];
820 bool b;
821
822 if( p_sys->b_muxed && tk->p_out_muxed )
823 {
824 i_track_count++;
825 tk->b_activated = true;
826 continue;
827 }
828
829 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
830 if( b && !tk->b_activated )
831 {
832 if( p_sys->b_seekable)
833 {
834 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
835 }
836 tk->b_activated = true;
837 }
838 else if( !b && tk->b_activated )
839 {
840 tk->b_activated = false;
841 }
842 if( b )
843 {
844 i_track_count++;
845 }
846 }
847
848 if( i_track_count <= 0 )
849 {
850 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
851
852 p_sys->i_time += 25*1000; /* read 25ms */
853 if( i_length > 0 )
854 {
855 if( p_sys->i_time >= i_length )
856 return 0;
857 return 1;
858 }
859 msg_Warn( p_demux, "no track selected, exiting..." );
860 return 0;
861 }
862
863 /* wait for the good time */
864 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
865 p_sys->i_time += 25*1000; /* read 25ms */
866
867 /* init toread */
868 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
869 {
870 avi_track_t *tk = p_sys->track[i_track];
871 mtime_t i_dpts;
872
873 toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
874 if( tk->i_idxposc < tk->idx.i_size )
875 {
876 toread[i_track].i_posf = tk->idx.p_entry[tk->i_idxposc].i_pos;
877 if( tk->i_idxposb > 0 )
878 {
879 toread[i_track].i_posf += 8 + tk->i_idxposb;
880 }
881 }
882 else
883 {
884 toread[i_track].i_posf = -1;
885 }
886
887 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
888
889 if( tk->i_samplesize )
890 {
891 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
892 }
893 else
894 {
895 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
896 }
897
898 if( i_dpts < 0 )
899 {
900 toread[i_track].i_toread *= -1;
901 }
902 }
903
904 for( ;; )
905 {
906 avi_track_t *tk;
907 bool b_done;
908 block_t *p_frame;
909 off_t i_pos;
910 unsigned int i;
911 size_t i_size;
912
913 /* search for first chunk to be read */
914 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
915 {
916 if( !toread[i].b_ok ||
917 AVI_GetDPTS( p_sys->track[i],
918 toread[i].i_toread ) <= -25 * 1000 )
919 {
920 continue;
921 }
922
923 if( toread[i].i_toread > 0 )
924 {
925 b_done = false; /* not yet finished */
926 }
927 if( toread[i].i_posf > 0 )
928 {
929 if( i_pos == -1 || i_pos > toread[i].i_posf )
930 {
931 i_track = i;
932 i_pos = toread[i].i_posf;
933 }
934 }
935 }
936
937 if( b_done )
938 {
939 for( i = 0; i < p_sys->i_track; i++ )
940 {
941 if( toread[i].b_ok )
942 return 1;
943 }
944 msg_Warn( p_demux, "all tracks have failed, exiting..." );
945 return 0;
946 }
947
948 if( i_pos == -1 )
949 {
950 int i_loop_count = 0;
951
952 /* no valid index, we will parse directly the stream
953 * in case we fail we will disable all finished stream */
954 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
955 {
956 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
957 if( AVI_PacketNext( p_demux ) )
958 {
959 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
960 }
961 }
962 else
963 {
964 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
965 }
966
967 for( ;; )
968 {
969 avi_packet_t avi_pk;
970
971 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
972 {
973 msg_Warn( p_demux,
974 "cannot get packet header, track disabled" );
975 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
976 }
977 if( avi_pk.i_stream >= p_sys->i_track ||
978 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
979 {
980 if( AVI_PacketNext( p_demux ) )
981 {
982 msg_Warn( p_demux,
983 "cannot skip packet, track disabled" );
984 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
985 }
986
987 /* Prevents from eating all the CPU with broken files.
988 * This value should be low enough so that it doesn't
989 * affect the reading speed too much. */
990 if( !(++i_loop_count % 1024) )
991 {
992 if( !vlc_object_alive (p_demux) ) return -1;
993 msleep( 10000 );
994
995 if( !(i_loop_count % (1024 * 10)) )
996 msg_Warn( p_demux,
997 "don't seem to find any data..." );
998 }
999 continue;
1000 }
1001 else
1002 {
1003 i_track = avi_pk.i_stream;
1004 tk = p_sys->track[i_track];
1005
1006 /* add this chunk to the index */
1007 avi_entry_t index;
1008 index.i_id = avi_pk.i_fourcc;
1009 index.i_flags = AVI_GetKeyFlag(tk->i_codec, avi_pk.i_peek);
1010 index.i_pos = avi_pk.i_pos;
1011 index.i_length = avi_pk.i_size;
1012 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1013
1014 /* do we will read this data ? */
1015 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1016 {
1017 break;
1018 }
1019 else
1020 {
1021 if( AVI_PacketNext( p_demux ) )
1022 {
1023 msg_Warn( p_demux,
1024 "cannot skip packet, track disabled" );
1025 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1026 }
1027 }
1028 }
1029 }
1030
1031 }
1032 else
1033 {
1034 stream_Seek( p_demux->s, i_pos );
1035 }
1036
1037 /* Set the track to use */
1038 tk = p_sys->track[i_track];
1039
1040 /* read thoses data */
1041 if( tk->i_samplesize )
1042 {
1043 unsigned int i_toread;
1044
1045 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1046 {
1047 if( tk->i_samplesize > 1 )
1048 {
1049 i_toread = tk->i_samplesize;
1050 }
1051 else
1052 {
1053 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1054 i_toread = __MAX( i_toread, 100 );
1055 }
1056 }
1057 i_size = __MIN( tk->idx.p_entry[tk->i_idxposc].i_length -
1058 tk->i_idxposb,
1059 i_toread );
1060 }
1061 else
1062 {
1063 i_size = tk->idx.p_entry[tk->i_idxposc].i_length;
1064 }
1065
1066 if( tk->i_idxposb == 0 )
1067 {
1068 i_size += 8; /* need to read and skip header */
1069 }
1070
1071 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1072 {
1073 msg_Warn( p_demux, "failed reading data" );
1074 tk->b_eof = false;
1075 toread[i_track].b_ok = false;
1076 continue;
1077 }
1078 if( i_size % 2 ) /* read was padded on word boundary */
1079 {
1080 p_frame->i_buffer--;
1081 }
1082 /* skip header */
1083 if( tk->i_idxposb == 0 )
1084 {
1085 p_frame->p_buffer += 8;
1086 p_frame->i_buffer -= 8;
1087 }
1088 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1089 if( tk->idx.p_entry[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1090 {
1091 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1092 }
1093 else
1094 {
1095 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1096 }
1097
1098 /* read data */
1099 if( tk->i_samplesize )
1100 {
1101 if( tk->i_idxposb == 0 )
1102 {
1103 i_size -= 8;
1104 }
1105 toread[i_track].i_toread -= i_size;
1106 tk->i_idxposb += i_size;
1107 if( tk->i_idxposb >=
1108 tk->idx.p_entry[tk->i_idxposc].i_length )
1109 {
1110 tk->i_idxposb = 0;
1111 tk->i_idxposc++;
1112 }
1113 }
1114 else
1115 {
1116 int i_length = tk->idx.p_entry[tk->i_idxposc].i_length;
1117
1118 tk->i_idxposc++;
1119 if( tk->i_cat == AUDIO_ES )
1120 {
1121 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1122 }
1123 toread[i_track].i_toread--;
1124 }
1125
1126 if( tk->i_idxposc < tk->idx.i_size)
1127 {
1128 toread[i_track].i_posf =
1129 tk->idx.p_entry[tk->i_idxposc].i_pos;
1130 if( tk->i_idxposb > 0 )
1131 {
1132 toread[i_track].i_posf += 8 + tk->i_idxposb;
1133 }
1134
1135 }
1136 else
1137 {
1138 toread[i_track].i_posf = -1;
1139 }
1140
1141 if( tk->i_cat != VIDEO_ES )
1142 p_frame->i_dts = p_frame->i_pts;
1143 else
1144 {
1145 p_frame->i_dts = p_frame->i_pts;
1146 p_frame->i_pts = VLC_TS_INVALID;
1147 }
1148
1149 //p_pes->i_rate = p_demux->stream.control.i_rate;
1150 if( tk->p_out_muxed )
1151 stream_DemuxSend( tk->p_out_muxed, p_frame );
1152 else
1153 es_out_Send( p_demux->out, tk->p_es, p_frame );
1154 }
1155 }
1156
1157
1158 /*****************************************************************************
1159 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1160 *****************************************************************************
1161 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1162 *****************************************************************************/
1163 static int Demux_UnSeekable( demux_t *p_demux )
1164 {
1165 demux_sys_t *p_sys = p_demux->p_sys;
1166 avi_track_t *p_stream_master = NULL;
1167 unsigned int i_stream;
1168 unsigned int i_packet;
1169
1170 if( p_sys->b_muxed )
1171 {
1172 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1173 return VLC_EGENERIC;
1174 }
1175
1176 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1177
1178 /* *** find master stream for data packet skipping algo *** */
1179 /* *** -> first video, if any, or first audio ES *** */
1180 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1181 {
1182 avi_track_t *tk = p_sys->track[i_stream];
1183 bool b;
1184
1185 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1186
1187 if( b && tk->i_cat == VIDEO_ES )
1188 {
1189 p_stream_master = tk;
1190 }
1191 else if( b )
1192 {
1193 p_stream_master = tk;
1194 }
1195 }
1196
1197 if( !p_stream_master )
1198 {
1199 msg_Warn( p_demux, "no more stream selected" );
1200 return( 0 );
1201 }
1202
1203 p_sys->i_time = AVI_GetPTS( p_stream_master );
1204
1205 for( i_packet = 0; i_packet < 10; i_packet++)
1206 {
1207 #define p_stream p_sys->track[avi_pk.i_stream]
1208
1209 avi_packet_t avi_pk;
1210
1211 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1212 {
1213 return( 0 );
1214 }
1215
1216 if( avi_pk.i_stream >= p_sys->i_track ||
1217 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1218 {
1219 /* we haven't found an audio or video packet:
1220 * - we have seek, found first next packet
1221 * - others packets could be found, skip them
1222 */
1223 switch( avi_pk.i_fourcc )
1224 {
1225 case AVIFOURCC_JUNK:
1226 case AVIFOURCC_LIST:
1227 case AVIFOURCC_RIFF:
1228 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1229 case AVIFOURCC_idx1:
1230 if( p_sys->b_odml )
1231 {
1232 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1233 }
1234 return( 0 ); /* eof */
1235 default:
1236 msg_Warn( p_demux,
1237 "seems to have lost position, resync" );
1238 if( AVI_PacketSearch( p_demux ) )
1239 {
1240 msg_Err( p_demux, "resync failed" );
1241 return( -1 );
1242 }
1243 }
1244 }
1245 else
1246 {
1247 /* check for time */
1248 if( __ABS( AVI_GetPTS( p_stream ) -
1249 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1250 {
1251 /* load it and send to decoder */
1252 block_t *p_frame;
1253 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1254 {
1255 return( -1 );
1256 }
1257 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1258
1259 if( avi_pk.i_cat != VIDEO_ES )
1260 p_frame->i_dts = p_frame->i_pts;
1261 else
1262 {
1263 p_frame->i_dts = p_frame->i_pts;
1264 p_frame->i_pts = VLC_TS_INVALID;
1265 }
1266
1267 //p_pes->i_rate = p_demux->stream.control.i_rate;
1268 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1269 }
1270 else
1271 {
1272 if( AVI_PacketNext( p_demux ) )
1273 {
1274 return( 0 );
1275 }
1276 }
1277
1278 /* *** update stream time position *** */
1279 if( p_stream->i_samplesize )
1280 {
1281 p_stream->i_idxposb += avi_pk.i_size;
1282 }
1283 else
1284 {
1285 if( p_stream->i_cat == AUDIO_ES )
1286 {
1287 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1288 }
1289 p_stream->i_idxposc++;
1290 }
1291
1292 }
1293 #undef p_stream
1294 }
1295
1296 return( 1 );
1297 }
1298
1299 /*****************************************************************************
1300 * Seek: goto to i_date or i_percent
1301 *****************************************************************************/
1302 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1303 {
1304
1305 demux_sys_t *p_sys = p_demux->p_sys;
1306 unsigned int i_stream;
1307 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1308 i_date / 1000000, i_percent );
1309
1310 if( p_sys->b_seekable )
1311 {
1312 if( !p_sys->i_length )
1313 {
1314 avi_track_t *p_stream;
1315 int64_t i_pos;
1316
1317 /* use i_percent to create a true i_date */
1318 msg_Warn( p_demux, "seeking without index at %d%%"
1319 " only works for interleaved files", i_percent );
1320 if( i_percent >= 100 )
1321 {
1322 msg_Warn( p_demux, "cannot seek so far !" );
1323 return VLC_EGENERIC;
1324 }
1325 i_percent = __MAX( i_percent, 0 );
1326
1327 /* try to find chunk that is at i_percent or the file */
1328 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1329 p_sys->i_movi_begin );
1330 /* search first selected stream (and prefer non eof ones) */
1331 for( i_stream = 0, p_stream = NULL;
1332 i_stream < p_sys->i_track; i_stream++ )
1333 {
1334 if( !p_stream || p_stream->b_eof )
1335 p_stream = p_sys->track[i_stream];
1336
1337 if( p_stream->b_activated && !p_stream->b_eof )
1338 break;
1339 }
1340 if( !p_stream || !p_stream->b_activated )
1341 {
1342 msg_Warn( p_demux, "cannot find any selected stream" );
1343 return VLC_EGENERIC;
1344 }
1345
1346 /* be sure that the index exist */
1347 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1348 {
1349 msg_Warn( p_demux, "cannot seek" );
1350 return VLC_EGENERIC;
1351 }
1352
1353 while( i_pos >= p_stream->idx.p_entry[p_stream->i_idxposc].i_pos +
1354 p_stream->idx.p_entry[p_stream->i_idxposc].i_length + 8 )
1355 {
1356 /* search after i_idxposc */
1357 if( AVI_StreamChunkSet( p_demux,
1358 i_stream, p_stream->i_idxposc + 1 ) )
1359 {
1360 msg_Warn( p_demux, "cannot seek" );
1361 return VLC_EGENERIC;
1362 }
1363 }
1364
1365 i_date = AVI_GetPTS( p_stream );
1366 /* TODO better support for i_samplesize != 0 */
1367 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1368 }
1369
1370 /* */
1371 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1372 {
1373 avi_track_t *p_stream = p_sys->track[i_stream];
1374
1375 if( !p_stream->b_activated )
1376 continue;
1377
1378 p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_date ) != 0;
1379 }
1380 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1381 p_sys->i_time = i_date;
1382 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1383 return VLC_SUCCESS;
1384 }
1385 else
1386 {
1387 msg_Err( p_demux, "shouldn't yet be executed" );
1388 return VLC_EGENERIC;
1389 }
1390 }
1391
1392 /*****************************************************************************
1393 * Control:
1394 *****************************************************************************/
1395 static double ControlGetPosition( demux_t *p_demux )
1396 {
1397 demux_sys_t *p_sys = p_demux->p_sys;
1398
1399 if( p_sys->i_length > 0 )
1400 {
1401 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1402 }
1403 else if( stream_Size( p_demux->s ) > 0 )
1404 {
1405 unsigned int i;
1406 int64_t i_tmp;
1407 int64_t i64 = 0;
1408
1409 /* search the more advanced selected es */
1410 for( i = 0; i < p_sys->i_track; i++ )
1411 {
1412 avi_track_t *tk = p_sys->track[i];
1413 if( tk->b_activated && tk->i_idxposc < tk->idx.i_size )
1414 {
1415 i_tmp = tk->idx.p_entry[tk->i_idxposc].i_pos +
1416 tk->idx.p_entry[tk->i_idxposc].i_length + 8;
1417 if( i_tmp > i64 )
1418 {
1419 i64 = i_tmp;
1420 }
1421 }
1422 }
1423 return (double)i64 / stream_Size( p_demux->s );
1424 }
1425 return 0.0;
1426 }
1427
1428 static int Control( demux_t *p_demux, int i_query, va_list args )
1429 {
1430 demux_sys_t *p_sys = p_demux->p_sys;
1431 int i;
1432 double f, *pf;
1433 int64_t i64, *pi64;
1434 vlc_meta_t *p_meta;
1435
1436 switch( i_query )
1437 {
1438 case DEMUX_GET_POSITION:
1439 pf = (double*)va_arg( args, double * );
1440 *pf = ControlGetPosition( p_demux );
1441 return VLC_SUCCESS;
1442 case DEMUX_SET_POSITION:
1443 f = (double)va_arg( args, double );
1444 if( p_sys->b_seekable )
1445 {
1446 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1447 return Seek( p_demux, i64, (int)(f * 100) );
1448 }
1449 else
1450 {
1451 int64_t i_pos = stream_Size( p_demux->s ) * f;
1452 return stream_Seek( p_demux->s, i_pos );
1453 }
1454
1455 case DEMUX_GET_TIME:
1456 pi64 = (int64_t*)va_arg( args, int64_t * );
1457 *pi64 = p_sys->i_time;
1458 return VLC_SUCCESS;
1459
1460 case DEMUX_SET_TIME:
1461 {
1462 int i_percent = 0;
1463
1464 i64 = (int64_t)va_arg( args, int64_t );
1465 if( p_sys->i_length > 0 )
1466 {
1467 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1468 }
1469 else if( p_sys->i_time > 0 )
1470 {
1471 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1472 (double)i64 / (double)p_sys->i_time );
1473 }
1474 return Seek( p_demux, i64, i_percent );
1475 }
1476 case DEMUX_GET_LENGTH:
1477 pi64 = (int64_t*)va_arg( args, int64_t * );
1478 *pi64 = p_sys->i_length * (mtime_t)1000000;
1479 return VLC_SUCCESS;
1480
1481 case DEMUX_GET_FPS:
1482 pf = (double*)va_arg( args, double * );
1483 *pf = 0.0;
1484 for( i = 0; i < (int)p_sys->i_track; i++ )
1485 {
1486 avi_track_t *tk = p_sys->track[i];
1487 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1488 {
1489 *pf = (float)tk->i_rate / (float)tk->i_scale;
1490 break;
1491 }
1492 }
1493 return VLC_SUCCESS;
1494
1495 case DEMUX_GET_META:
1496 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1497 vlc_meta_Merge( p_meta, p_sys->meta );
1498 return VLC_SUCCESS;
1499
1500 case DEMUX_GET_ATTACHMENTS:
1501 {
1502 if( p_sys->i_attachment <= 0 )
1503 return VLC_EGENERIC;
1504
1505 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1506 int *pi_int = va_arg( args, int * );
1507
1508 *pi_int = p_sys->i_attachment;
1509 *ppp_attach = calloc( p_sys->i_attachment, sizeof(*ppp_attach));
1510 for( unsigned i = 0; i < p_sys->i_attachment && *ppp_attach; i++ )
1511 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachment[i] );
1512 return VLC_SUCCESS;
1513 }
1514
1515 default:
1516 return VLC_EGENERIC;
1517 }
1518 }
1519
1520 /*****************************************************************************
1521 * Function to convert pts to chunk or byte
1522 *****************************************************************************/
1523
1524 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1525 {
1526 if( !tk->i_scale )
1527 return (mtime_t)0;
1528
1529 return (mtime_t)((int64_t)i_pts *
1530 (int64_t)tk->i_rate /
1531 (int64_t)tk->i_scale /
1532 (int64_t)1000000 );
1533 }
1534 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1535 {
1536 if( !tk->i_scale || !tk->i_samplesize )
1537 return (mtime_t)0;
1538
1539 return (mtime_t)((int64_t)i_pts *
1540 (int64_t)tk->i_rate /
1541 (int64_t)tk->i_scale /
1542 (int64_t)1000000 *
1543 (int64_t)tk->i_samplesize );
1544 }
1545
1546 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1547 {
1548 mtime_t i_dpts = 0;
1549
1550 if( !tk->i_rate )
1551 return i_dpts;
1552
1553 i_dpts = (mtime_t)( (int64_t)1000000 *
1554 (int64_t)i_count *
1555 (int64_t)tk->i_scale /
1556 (int64_t)tk->i_rate );
1557
1558 if( tk->i_samplesize )
1559 {
1560 return i_dpts / tk->i_samplesize;
1561 }
1562 return i_dpts;
1563 }
1564
1565 static mtime_t AVI_GetPTS( avi_track_t *tk )
1566 {
1567 if( tk->i_samplesize )
1568 {
1569 int64_t i_count = 0;
1570
1571 /* we need a valid entry we will emulate one */
1572 if( tk->i_idxposc == tk->idx.i_size )
1573 {
1574 if( tk->i_idxposc )
1575 {
1576 /* use the last entry */
1577 i_count = tk->idx.p_entry[tk->idx.i_size - 1].i_lengthtotal
1578 + tk->idx.p_entry[tk->idx.i_size - 1].i_length;
1579 }
1580 }
1581 else
1582 {
1583 i_count = tk->idx.p_entry[tk->i_idxposc].i_lengthtotal;
1584 }
1585 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1586 }
1587 else
1588 {
1589 if( tk->i_cat == AUDIO_ES )
1590 {
1591 return AVI_GetDPTS( tk, tk->i_blockno );
1592 }
1593 else
1594 {
1595 return AVI_GetDPTS( tk, tk->i_idxposc );
1596 }
1597 }
1598 }
1599
1600 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1601 {
1602 demux_sys_t *p_sys = p_demux->p_sys;
1603 avi_packet_t avi_pk;
1604 int i_loop_count = 0;
1605
1606 /* find first chunk of i_stream that isn't in index */
1607
1608 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1609 {
1610 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1611 if( AVI_PacketNext( p_demux ) )
1612 {
1613 return VLC_EGENERIC;
1614 }
1615 }
1616 else
1617 {
1618 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1619 }
1620
1621 for( ;; )
1622 {
1623 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1624
1625 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1626 {
1627 msg_Warn( p_demux, "cannot get packet header" );
1628 return VLC_EGENERIC;
1629 }
1630 if( avi_pk.i_stream >= p_sys->i_track ||
1631 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1632 {
1633 if( AVI_PacketNext( p_demux ) )
1634 {
1635 return VLC_EGENERIC;
1636 }
1637
1638 /* Prevents from eating all the CPU with broken files.
1639 * This value should be low enough so that it doesn't
1640 * affect the reading speed too much. */
1641 if( !(++i_loop_count % 1024) )
1642 {
1643 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1644 msleep( 10000 );
1645
1646 if( !(i_loop_count % (1024 * 10)) )
1647 msg_Warn( p_demux, "don't seem to find any data..." );
1648 }
1649 }
1650 else
1651 {
1652 avi_track_t *tk_pk = p_sys->track[avi_pk.i_stream];
1653
1654 /* add this chunk to the index */
1655 avi_entry_t index;
1656 index.i_id = avi_pk.i_fourcc;
1657 index.i_flags = AVI_GetKeyFlag(tk_pk->i_codec, avi_pk.i_peek);
1658 index.i_pos = avi_pk.i_pos;
1659 index.i_length = avi_pk.i_size;
1660 avi_index_Append( &tk_pk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1661
1662 if( avi_pk.i_stream == i_stream )
1663 {
1664 return VLC_SUCCESS;
1665 }
1666
1667 if( AVI_PacketNext( p_demux ) )
1668 {
1669 return VLC_EGENERIC;
1670 }
1671 }
1672 }
1673 }
1674
1675 /* be sure that i_ck will be a valid index entry */
1676 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1677 unsigned int i_ck )
1678 {
1679 demux_sys_t *p_sys = p_demux->p_sys;
1680 avi_track_t *p_stream = p_sys->track[i_stream];
1681
1682 p_stream->i_idxposc = i_ck;
1683 p_stream->i_idxposb = 0;
1684
1685 if( i_ck >= p_stream->idx.i_size )
1686 {
1687 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1688 do
1689 {
1690 p_stream->i_idxposc++;
1691 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1692 {
1693 return VLC_EGENERIC;
1694 }
1695
1696 } while( p_stream->i_idxposc < i_ck );
1697 }
1698
1699 return VLC_SUCCESS;
1700 }
1701
1702 /* XXX FIXME up to now, we assume that all chunk are one after one */
1703 static int AVI_StreamBytesSet( demux_t *p_demux,
1704 unsigned int i_stream,
1705 off_t i_byte )
1706 {
1707 demux_sys_t *p_sys = p_demux->p_sys;
1708 avi_track_t *p_stream = p_sys->track[i_stream];
1709
1710 if( ( p_stream->idx.i_size > 0 )
1711 &&( i_byte < p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_lengthtotal +
1712 p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_length ) )
1713 {
1714 /* index is valid to find the ck */
1715 /* uses dichototmie to be fast enougth */
1716 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->idx.i_size - 1 );
1717 int i_idxmax = p_stream->idx.i_size;
1718 int i_idxmin = 0;
1719 for( ;; )
1720 {
1721 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal > i_byte )
1722 {
1723 i_idxmax = i_idxposc ;
1724 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1725 }
1726 else
1727 {
1728 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal +
1729 p_stream->idx.p_entry[i_idxposc].i_length <= i_byte)
1730 {
1731 i_idxmin = i_idxposc ;
1732 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1733 }
1734 else
1735 {
1736 p_stream->i_idxposc = i_idxposc;
1737 p_stream->i_idxposb = i_byte -
1738 p_stream->idx.p_entry[i_idxposc].i_lengthtotal;
1739 return VLC_SUCCESS;
1740 }
1741 }
1742 }
1743
1744 }
1745 else
1746 {
1747 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1748 p_stream->i_idxposb = 0;
1749 do
1750 {
1751 p_stream->i_idxposc++;
1752 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1753 {
1754 return VLC_EGENERIC;
1755 }
1756
1757 } while( p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal +
1758 p_stream->idx.p_entry[p_stream->i_idxposc].i_length <= i_byte );
1759
1760 p_stream->i_idxposb = i_byte -
1761 p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal;
1762 return VLC_SUCCESS;
1763 }
1764 }
1765
1766 static int AVI_TrackSeek( demux_t *p_demux,
1767 int i_stream,
1768 mtime_t i_date )
1769 {
1770 demux_sys_t *p_sys = p_demux->p_sys;
1771 avi_track_t *tk = p_sys->track[i_stream];
1772
1773 #define p_stream p_sys->track[i_stream]
1774 mtime_t i_oldpts;
1775
1776 i_oldpts = AVI_GetPTS( p_stream );
1777
1778 if( !p_stream->i_samplesize )
1779 {
1780 if( AVI_StreamChunkSet( p_demux,
1781 i_stream,
1782 AVI_PTSToChunk( p_stream, i_date ) ) )
1783 {
1784 return VLC_EGENERIC;
1785 }
1786
1787 if( p_stream->i_cat == AUDIO_ES )
1788 {
1789 unsigned int i;
1790 tk->i_blockno = 0;
1791 for( i = 0; i < tk->i_idxposc; i++ )
1792 {
1793 if( tk->i_blocksize > 0 )
1794 {
1795 tk->i_blockno += ( tk->idx.p_entry[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1796 }
1797 else
1798 {
1799 tk->i_blockno++;
1800 }
1801 }
1802 }
1803
1804 msg_Dbg( p_demux,
1805 "old:%"PRId64" %s new %"PRId64,
1806 i_oldpts,
1807 i_oldpts > i_date ? ">" : "<",
1808 i_date );
1809
1810 if( p_stream->i_cat == VIDEO_ES )
1811 {
1812 /* search key frame */
1813 //if( i_date < i_oldpts || 1 )
1814 {
1815 while( p_stream->i_idxposc > 0 &&
1816 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1817 AVIIF_KEYFRAME ) )
1818 {
1819 if( AVI_StreamChunkSet( p_demux,
1820 i_stream,
1821 p_stream->i_idxposc - 1 ) )
1822 {
1823 return VLC_EGENERIC;
1824 }
1825 }
1826 }
1827 #if 0
1828 else
1829 {
1830 while( p_stream->i_idxposc < p_stream->idx.i_size &&
1831 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1832 AVIIF_KEYFRAME ) )
1833 {
1834 if( AVI_StreamChunkSet( p_demux,
1835 i_stream,
1836 p_stream->i_idxposc + 1 ) )
1837 {
1838 return VLC_EGENERIC;
1839 }
1840 }
1841 }
1842 #endif
1843 }
1844 }
1845 else
1846 {
1847 if( AVI_StreamBytesSet( p_demux,
1848 i_stream,
1849 AVI_PTSToByte( p_stream, i_date ) ) )
1850 {
1851 return VLC_EGENERIC;
1852 }
1853 }
1854 return VLC_SUCCESS;
1855 #undef p_stream
1856 }
1857
1858 /****************************************************************************
1859 * Return true if it's a key frame
1860 ****************************************************************************/
1861 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1862 {
1863 switch( i_fourcc )
1864 {
1865 case VLC_CODEC_DIV1:
1866 /* we have:
1867 * startcode: 0x00000100 32bits
1868 * framenumber ? 5bits
1869 * piture type 0(I),1(P) 2bits
1870 */
1871 if( GetDWBE( p_byte ) != 0x00000100 )
1872 {
1873 /* it's not an msmpegv1 stream, strange...*/
1874 return AVIIF_KEYFRAME;
1875 }
1876 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1877
1878 case VLC_CODEC_DIV2:
1879 case VLC_CODEC_DIV3:
1880 case VLC_CODEC_WMV1:
1881 /* we have
1882 * picture type 0(I),1(P) 2bits
1883 */
1884 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1885 case VLC_CODEC_MP4V:
1886 /* we should find first occurrence of 0x000001b6 (32bits)
1887 * startcode: 0x000001b6 32bits
1888 * piture type 0(I),1(P) 2bits
1889 */
1890 if( GetDWBE( p_byte ) != 0x000001b6 )
1891 {
1892 /* not true , need to find the first VOP header */
1893 return AVIIF_KEYFRAME;
1894 }
1895 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1896
1897 default:
1898 /* I can't do it, so say yes */
1899 return AVIIF_KEYFRAME;
1900 }
1901 }
1902
1903 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1904 {
1905 switch( i_cat )
1906 {
1907 case AUDIO_ES:
1908 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1909 return i_codec;
1910 case VIDEO_ES:
1911 return vlc_fourcc_GetCodec( i_cat, i_codec );
1912 default:
1913 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1914 }
1915 }
1916
1917 /****************************************************************************
1918 *
1919 ****************************************************************************/
1920 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1921 unsigned int *pi_number, unsigned int *pi_type )
1922 {
1923 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1924 int c1, c2;
1925
1926 c1 = ((uint8_t *)&i_id)[0];
1927 c2 = ((uint8_t *)&i_id)[1];
1928
1929 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1930 {
1931 SET_PTR( pi_number, 100 ); /* > max stream number */
1932 SET_PTR( pi_type, UNKNOWN_ES );
1933 }
1934 else
1935 {
1936 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1937 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1938 {
1939 case AVITWOCC_wb:
1940 SET_PTR( pi_type, AUDIO_ES );
1941 break;
1942 case AVITWOCC_dc:
1943 case AVITWOCC_db:
1944 case AVITWOCC_AC:
1945 SET_PTR( pi_type, VIDEO_ES );
1946 break;
1947 case AVITWOCC_tx:
1948 case AVITWOCC_sb:
1949 SET_PTR( pi_type, SPU_ES );
1950 break;
1951 default:
1952 SET_PTR( pi_type, UNKNOWN_ES );
1953 break;
1954 }
1955 }
1956 #undef SET_PTR
1957 }
1958
1959 /****************************************************************************
1960 *
1961 ****************************************************************************/
1962 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1963 {
1964 const uint8_t *p_peek;
1965
1966 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1967 {
1968 return VLC_EGENERIC;
1969 }
1970 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1971 p_pk->i_size = GetDWLE( p_peek + 4 );
1972 p_pk->i_pos = stream_Tell( p_demux->s );
1973 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1974 {
1975 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1976 p_peek[10], p_peek[11] );
1977 }
1978 else
1979 {
1980 p_pk->i_type = 0;
1981 }
1982
1983 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1984
1985 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1986 return VLC_SUCCESS;
1987 }
1988
1989 static int AVI_PacketNext( demux_t *p_demux )
1990 {
1991 avi_packet_t avi_ck;
1992 int i_skip = 0;
1993
1994 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1995 {
1996 return VLC_EGENERIC;
1997 }
1998
1999 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2000 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2001 {
2002 i_skip = 12;
2003 }
2004 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2005 avi_ck.i_type == AVIFOURCC_AVIX )
2006 {
2007 i_skip = 24;
2008 }
2009 else
2010 {
2011 i_skip = __EVEN( avi_ck.i_size ) + 8;
2012 }
2013
2014 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2015 {
2016 return VLC_EGENERIC;
2017 }
2018 return VLC_SUCCESS;
2019 }
2020
2021 static int AVI_PacketRead( demux_t *p_demux,
2022 avi_packet_t *p_pk,
2023 block_t **pp_frame )
2024 {
2025 size_t i_size;
2026
2027 i_size = __EVEN( p_pk->i_size + 8 );
2028
2029 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2030 {
2031 return VLC_EGENERIC;
2032 }
2033 (*pp_frame)->p_buffer += 8;
2034 (*pp_frame)->i_buffer -= 8;
2035
2036 if( i_size != p_pk->i_size + 8 )
2037 {
2038 (*pp_frame)->i_buffer--;
2039 }
2040
2041 return VLC_SUCCESS;
2042 }
2043
2044 static int AVI_PacketSearch( demux_t *p_demux )
2045 {
2046 demux_sys_t *p_sys = p_demux->p_sys;
2047 avi_packet_t avi_pk;
2048 int i_count = 0;
2049
2050 for( ;; )
2051 {
2052 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2053 {
2054 return VLC_EGENERIC;
2055 }
2056 AVI_PacketGetHeader( p_demux, &avi_pk );
2057 if( avi_pk.i_stream < p_sys->i_track &&
2058 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2059 {
2060 return VLC_SUCCESS;
2061 }
2062 switch( avi_pk.i_fourcc )
2063 {
2064 case AVIFOURCC_JUNK:
2065 case AVIFOURCC_LIST:
2066 case AVIFOURCC_RIFF:
2067 case AVIFOURCC_idx1:
2068 return VLC_SUCCESS;
2069 }
2070
2071 /* Prevents from eating all the CPU with broken files.
2072 * This value should be low enough so that it doesn't affect the
2073 * reading speed too much (not that we care much anyway because
2074 * this code is called only on broken files). */
2075 if( !(++i_count % 1024) )
2076 {
2077 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2078
2079 msleep( 10000 );
2080 if( !(i_count % (1024 * 10)) )
2081 msg_Warn( p_demux, "trying to resync..." );
2082 }
2083 }
2084 }
2085
2086 /****************************************************************************
2087 * Index stuff.
2088 ****************************************************************************/
2089 static void avi_index_Init( avi_index_t *p_index )
2090 {
2091 p_index->i_size = 0;
2092 p_index->i_max = 0;
2093 p_index->p_entry = NULL;
2094 }
2095 static void avi_index_Clean( avi_index_t *p_index )
2096 {
2097 free( p_index->p_entry );
2098 }
2099 static void avi_index_Append( avi_index_t *p_index, off_t *pi_last_pos,
2100 avi_entry_t *p_entry )
2101 {
2102 /* Update last chunk position */
2103 if( *pi_last_pos < p_entry->i_pos )
2104 *pi_last_pos = p_entry->i_pos;
2105
2106 /* add the entry */
2107 if( p_index->i_size >= p_index->i_max )
2108 {
2109 p_index->i_max += 16384;
2110 p_index->p_entry = realloc_or_free( p_index->p_entry,
2111 p_index->i_max * sizeof( *p_index->p_entry ) );
2112 if( !p_index->p_entry )
2113 return;
2114 }
2115 /* calculate cumulate length */
2116 if( p_index->i_size > 0 )
2117 {
2118 p_entry->i_lengthtotal =
2119 p_index->p_entry[p_index->i_size - 1].i_length +
2120 p_index->p_entry[p_index->i_size - 1].i_lengthtotal;
2121 }
2122 else
2123 {
2124 p_entry->i_lengthtotal = 0;
2125 }
2126
2127 p_index->p_entry[p_index->i_size++] = *p_entry;
2128 }
2129
2130 static int AVI_IndexFind_idx1( demux_t *p_demux,
2131 avi_chunk_idx1_t **pp_idx1,
2132 uint64_t *pi_offset )
2133 {
2134 demux_sys_t *p_sys = p_demux->p_sys;
2135
2136 avi_chunk_list_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2137 avi_chunk_idx1_t *p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2138
2139 if( !p_idx1 )
2140 {
2141 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2142 return VLC_EGENERIC;
2143 }
2144 *pp_idx1 = p_idx1;
2145
2146 /* *** calculate offset *** */
2147 /* Well, avi is __SHIT__ so test more than one entry
2148 * (needed for some avi files) */
2149 avi_chunk_list_t *p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2150 *pi_offset = 0;
2151 for( unsigned i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2152 {
2153 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2154 {
2155 *pi_offset = p_movi->i_chunk_pos + 8;
2156 break;
2157 }
2158 }
2159 return VLC_SUCCESS;
2160 }
2161
2162 static int AVI_IndexLoad_idx1( demux_t *p_demux,
2163 avi_index_t p_index[], off_t *pi_last_offset )
2164 {
2165 demux_sys_t *p_sys = p_demux->p_sys;
2166
2167 avi_chunk_idx1_t *p_idx1;
2168 uint64_t i_offset;
2169 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2170 return VLC_EGENERIC;
2171
2172 for( unsigned i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2173 {
2174 unsigned i_cat;
2175 unsigned i_stream;
2176
2177 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2178 &i_stream,
2179 &i_cat );
2180 if( i_stream < p_sys->i_track &&
2181 i_cat == p_sys->track[i_stream]->i_cat )
2182 {
2183 avi_entry_t index;
2184 index.i_id = p_idx1->entry[i_index].i_fourcc;
2185 index.i_flags = p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2186 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2187 index.i_length = p_idx1->entry[i_index].i_length;
2188
2189 avi_index_Append( &p_index[i_stream], pi_last_offset, &index );
2190 }
2191 }
2192 return VLC_SUCCESS;
2193 }
2194
2195 static void __Parse_indx( demux_t *p_demux, avi_index_t *p_index, off_t *pi_max_offset,
2196 avi_chunk_indx_t *p_indx )
2197 {
2198 avi_entry_t index;
2199
2200 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2201 if( p_indx->i_indexsubtype == 0 )
2202 {
2203 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2204 {
2205 index.i_id = p_indx->i_id;
2206 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2207 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2208 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2209
2210 avi_index_Append( p_index, pi_max_offset, &index );
2211 }
2212 }
2213 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2214 {
2215 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2216 {
2217 index.i_id = p_indx->i_id;
2218 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2219 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2220 index.i_length = p_indx->idx.field[i].i_size;
2221
2222 avi_index_Append( p_index, pi_max_offset, &index );
2223 }
2224 }
2225 else
2226 {
2227 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2228 }
2229 }
2230
2231 static void AVI_IndexLoad_indx( demux_t *p_demux,
2232 avi_index_t p_index[], off_t *pi_last_offset )
2233 {
2234 demux_sys_t *p_sys = p_demux->p_sys;
2235
2236 avi_chunk_list_t *p_riff;
2237 avi_chunk_list_t *p_hdrl;
2238
2239 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2240 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2241
2242 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2243 {
2244 avi_chunk_list_t *p_strl;
2245 avi_chunk_indx_t *p_indx;
2246
2247 #define p_stream p_sys->track[i_stream]
2248 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2249 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2250
2251 if( !p_indx )
2252 {
2253 if( p_sys->b_odml )
2254 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2255 "file?)" );
2256 continue;
2257 }
2258
2259 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2260 {
2261 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, p_indx );
2262 }
2263 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2264 {
2265 avi_chunk_t ck_sub;
2266 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2267 {
2268 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2269 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2270 {
2271 break;
2272 }
2273 if( ck_sub.indx.i_indextype == AVI_INDEX_OF_CHUNKS )
2274 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, &ck_sub.indx );
2275 AVI_ChunkFree( p_demux->s, &ck_sub );
2276 }
2277 }
2278 else
2279 {
2280 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2281 }
2282 #undef p_stream
2283 }
2284 }
2285
2286 static void AVI_IndexLoad( demux_t *p_demux )
2287 {
2288 demux_sys_t *p_sys = p_demux->p_sys;
2289
2290 /* Load indexes */
2291 assert( p_sys->i_track <= 100 );
2292 avi_index_t p_idx_indx[p_sys->i_track];
2293 avi_index_t p_idx_idx1[p_sys->i_track];
2294 for( unsigned i = 0; i < p_sys->i_track; i++ )
2295 {
2296 avi_index_Init( &p_idx_indx[i] );
2297 avi_index_Init( &p_idx_idx1[i] );
2298 }
2299 off_t i_indx_last_pos = p_sys->i_movi_lastchunk_pos;
2300 off_t i_idx1_last_pos = p_sys->i_movi_lastchunk_pos;
2301
2302 AVI_IndexLoad_indx( p_demux, p_idx_indx, &i_indx_last_pos );
2303 if( !p_sys->b_odml )
2304 AVI_IndexLoad_idx1( p_demux, p_idx_idx1, &i_idx1_last_pos );
2305
2306 /* Select the longest index */
2307 for( unsigned i = 0; i < p_sys->i_track; i++ )
2308 {
2309 if( p_idx_indx[i].i_size > p_idx_idx1[i].i_size )
2310 {
2311 msg_Dbg( p_demux, "selected ODML index for stream[%u]", i );
2312 p_sys->track[i]->idx = p_idx_indx[i];
2313 avi_index_Clean( &p_idx_idx1[i] );
2314 }
2315 else
2316 {
2317 msg_Dbg( p_demux, "selected standard index for stream[%u]", i );
2318 p_sys->track[i]->idx = p_idx_idx1[i];
2319 avi_index_Clean( &p_idx_indx[i] );
2320 }
2321 }
2322 p_sys->i_movi_lastchunk_pos = __MAX( i_indx_last_pos, i_idx1_last_pos );
2323
2324 for( unsigned i = 0; i < p_sys->i_track; i++ )
2325 {
2326 avi_index_t *p_index = &p_sys->track[i]->idx;
2327
2328 /* Fix key flag */
2329 bool b_key = false;
2330 for( unsigned j = 0; !b_key && j < p_index->i_size; j++ )
2331 b_key = p_index->p_entry[j].i_flags & AVIIF_KEYFRAME;
2332 if( !b_key )
2333 {
2334 msg_Err( p_demux, "no key frame set for track %u", i );
2335 for( unsigned j = 0; j < p_index->i_size; j++ )
2336 p_index->p_entry[j].i_flags |= AVIIF_KEYFRAME;
2337 }
2338
2339 /* */
2340 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2341 i, p_index->i_size );
2342 }
2343 }
2344
2345 static void AVI_IndexCreate( demux_t *p_demux )
2346 {
2347 demux_sys_t *p_sys = p_demux->p_sys;
2348
2349 avi_chunk_list_t *p_riff;
2350 avi_chunk_list_t *p_movi;
2351
2352 unsigned int i_stream;
2353 off_t i_movi_end;
2354
2355 mtime_t i_dialog_update;
2356 dialog_progress_bar_t *p_dialog = NULL;
2357
2358 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2359 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2360
2361 if( !p_movi )
2362 {
2363 msg_Err( p_demux, "cannot find p_movi" );
2364 return;
2365 }
2366
2367 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2368 avi_index_Init( &p_sys->track[i_stream]->idx );
2369
2370 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2371 stream_Size( p_demux->s ) );
2372
2373 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2374 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2375
2376
2377 /* Only show dialog if AVI is > 10MB */
2378 i_dialog_update = mdate();
2379 if( stream_Size( p_demux->s ) > 10000000 )
2380 p_dialog = dialog_ProgressCreate( p_demux, _("Fixing AVI Index..."),
2381 NULL, _("Cancel") );
2382
2383 for( ;; )
2384 {
2385 avi_packet_t pk;
2386
2387 if( !vlc_object_alive (p_demux) )
2388 break;
2389
2390 /* Don't update/check dialog too often */
2391 if( p_dialog && mdate() - i_dialog_update > 100000 )
2392 {
2393 if( dialog_ProgressCancelled( p_dialog ) )
2394 break;
2395
2396 double f_current = stream_Tell( p_demux->s );
2397 double f_size = stream_Size( p_demux->s );
2398 double f_pos = f_current / f_size;
2399 dialog_ProgressSet( p_dialog, NULL, f_pos );
2400
2401 i_dialog_update = mdate();
2402 }
2403
2404 if( AVI_PacketGetHeader( p_demux, &pk ) )
2405 break;
2406
2407 if( pk.i_stream < p_sys->i_track &&
2408 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2409 {
2410 avi_track_t *tk = p_sys->track[pk.i_stream];
2411
2412 avi_entry_t index;
2413 index.i_id = pk.i_fourcc;
2414 index.i_flags = AVI_GetKeyFlag(tk->i_codec, pk.i_peek);
2415 index.i_pos = pk.i_pos;
2416 index.i_length = pk.i_size;
2417 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
2418 }
2419 else
2420 {
2421 switch( pk.i_fourcc )
2422 {
2423 case AVIFOURCC_idx1:
2424 if( p_sys->b_odml )
2425 {
2426 avi_chunk_list_t *p_sysx;
2427 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2428 AVIFOURCC_RIFF, 1 );
2429
2430 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2431 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2432 goto print_stat;
2433 break;
2434 }
2435 goto print_stat;
2436
2437 case AVIFOURCC_RIFF:
2438 msg_Dbg( p_demux, "new RIFF chunk found" );
2439 break;
2440
2441 case AVIFOURCC_rec:
2442 case AVIFOURCC_JUNK:
2443 break;
2444
2445 default:
2446 msg_Warn( p_demux, "need resync, probably broken avi" );
2447 if( AVI_PacketSearch( p_demux ) )
2448 {
2449 msg_Warn( p_demux, "lost sync, abord index creation" );
2450 goto print_stat;
2451 }
2452 }
2453 }
2454
2455 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2456 AVI_PacketNext( p_demux ) )
2457 {
2458 break;
2459 }
2460 }
2461
2462 print_stat:
2463 if( p_dialog != NULL )
2464 dialog_ProgressDestroy( p_dialog );
2465
2466 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2467 {
2468 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2469 i_stream, p_sys->track[i_stream]->idx.i_size );
2470 }
2471 }
2472
2473 /* */
2474 static void AVI_MetaLoad( demux_t *p_demux,
2475 avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih )
2476 {
2477 demux_sys_t *p_sys = p_demux->p_sys;
2478
2479 vlc_meta_t *p_meta = p_sys->meta = vlc_meta_New();
2480 if( !p_meta )
2481 return;
2482
2483 char buffer[200];
2484 snprintf( buffer, sizeof(buffer), "%s%s%s%s",
2485 p_avih->i_flags&AVIF_HASINDEX ? " HAS_INDEX" : "",
2486 p_avih->i_flags&AVIF_MUSTUSEINDEX ? " MUST_USE_INDEX" : "",
2487 p_avih->i_flags&AVIF_ISINTERLEAVED ? " IS_INTERLEAVED" : "",
2488 p_avih->i_flags&AVIF_TRUSTCKTYPE ? " TRUST_CKTYPE" : "" );
2489 vlc_meta_SetSetting( p_meta, buffer );
2490
2491 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0 );
2492 if( !p_info )
2493 return;
2494
2495 static const struct {
2496 vlc_fourcc_t i_id;
2497 int i_type;
2498 } p_dsc[] = {
2499 { AVIFOURCC_IART, vlc_meta_Artist },
2500 { AVIFOURCC_ICMT, vlc_meta_Description },
2501 { AVIFOURCC_ICOP, vlc_meta_Copyright },
2502 { AVIFOURCC_IGNR, vlc_meta_Genre },
2503 { AVIFOURCC_INAM, vlc_meta_Title },
2504 { 0, -1 }
2505 };
2506 for( int i = 0; p_dsc[i].i_id != 0; i++ )
2507 {
2508 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_dsc[i].i_id, 0 );
2509 if( !p_strz )
2510 continue;
2511 char *psz_value = FromACP( p_strz->p_str );
2512 if( !psz_value )
2513 continue;
2514
2515 if( *psz_value )
2516 vlc_meta_Set( p_meta, p_dsc[i].i_type, psz_value );
2517 free( psz_value );
2518 }
2519 }
2520
2521 /*****************************************************************************
2522 * Subtitles
2523 *****************************************************************************/
2524 static void AVI_ExtractSubtitle( demux_t *p_demux,
2525 unsigned int i_stream,
2526 avi_chunk_list_t *p_strl,
2527 avi_chunk_STRING_t *p_strn )
2528 {
2529 demux_sys_t *p_sys = p_demux->p_sys;
2530 block_t *p_block = NULL;
2531 input_attachment_t *p_attachment = NULL;
2532 char *psz_description = NULL;
2533 avi_chunk_indx_t *p_indx = NULL;
2534
2535 if( !p_sys->b_seekable )
2536 goto exit;
2537
2538 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2539 avi_chunk_t ck;
2540 int64_t i_position;
2541 unsigned i_size;
2542 if( p_indx )
2543 {
2544 if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES &&
2545 p_indx->i_entriesinuse > 0 )
2546 {
2547 if( stream_Seek( p_demux->s, p_indx->idx.super[0].i_offset )||
2548 AVI_ChunkRead( p_demux->s, &ck, NULL ) )
2549 goto exit;
2550 p_indx = &ck.indx;
2551 }
2552
2553 if( p_indx->i_indextype != AVI_INDEX_OF_CHUNKS ||
2554 p_indx->i_entriesinuse != 1 ||
2555 p_indx->i_indexsubtype != 0 )
2556 goto exit;
2557
2558 i_position = p_indx->i_baseoffset +
2559 p_indx->idx.std[0].i_offset - 8;
2560 i_size = (p_indx->idx.std[0].i_size & 0x7fffffff) + 8;
2561 }
2562 else
2563 {
2564 avi_chunk_idx1_t *p_idx1;
2565 uint64_t i_offset;
2566
2567 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2568 goto exit;
2569
2570 i_size = 0;
2571 for( unsigned i = 0; i < p_idx1->i_entry_count; i++ )
2572 {
2573 const idx1_entry_t *e = &p_idx1->entry[i];
2574 unsigned i_cat;
2575 unsigned i_stream_idx;
2576
2577 AVI_ParseStreamHeader( e->i_fourcc, &i_stream_idx, &i_cat );
2578 if( i_cat == SPU_ES && i_stream_idx == i_stream )
2579 {
2580 i_position = e->i_pos + i_offset;
2581 i_size = e->i_length + 8;
2582 break;
2583 }
2584 }
2585 if( i_size <= 0 )
2586 goto exit;
2587 }
2588
2589 /* */
2590 if( i_size > 1000000 )
2591 goto exit;
2592
2593 if( stream_Seek( p_demux->s, i_position ) )
2594 goto exit;
2595 p_block = stream_Block( p_demux->s, i_size );
2596 if( !p_block )
2597 goto exit;
2598
2599 /* Parse packet header */
2600 const uint8_t *p = p_block->p_buffer;
2601 if( i_size < 8 || p[2] != 't' || p[3] != 'x' )
2602 goto exit;
2603 p += 8;
2604 i_size -= 8;
2605
2606 /* Parse subtitle chunk header */
2607 if( i_size < 11 || memcmp( p, "GAB2", 4 ) ||
2608 p[4] != 0x00 || GetWLE( &p[5] ) != 0x2 )
2609 goto exit;
2610 const unsigned i_name = GetDWLE( &p[7] );
2611 if( 11 + i_size <= i_name )
2612 goto exit;
2613 if( i_name > 0 )
2614 psz_description = FromCharset( "UTF-16LE", &p[11], i_name );
2615 p += 11 + i_name;
2616 i_size -= 11 + i_name;
2617 if( i_size < 6 || GetWLE( &p[0] ) != 0x04 )
2618 goto exit;
2619 const unsigned i_payload = GetDWLE( &p[2] );
2620 if( i_size < 6 + i_payload || i_payload <= 0 )
2621 goto exit;
2622 p += 6;
2623 i_size -= 6;
2624
2625 if( !psz_description )
2626 psz_description = p_strn ? FromACP( p_strn->p_str ) : NULL;
2627 char *psz_name;
2628 if( asprintf( &psz_name, "subtitle%d.srt", p_sys->i_attachment ) <= 0 )
2629 psz_name = NULL;
2630 p_attachment = vlc_input_attachment_New( psz_name,
2631 "application/x-srt",
2632 psz_description,
2633 p, i_payload );
2634 if( p_attachment )
2635 TAB_APPEND( p_sys->i_attachment, p_sys->attachment, p_attachment );
2636 free( psz_name );
2637
2638 exit:
2639 free( psz_description );
2640
2641 if( p_block )
2642 block_Release( p_block );
2643
2644 if( p_attachment )
2645 msg_Dbg( p_demux, "Loaded an embed subtitle" );
2646 else
2647 msg_Warn( p_demux, "Failed to load an embed subtitle" );
2648
2649 if( p_indx == &ck.indx )
2650 AVI_ChunkFree( p_demux->s, &ck );
2651 }
2652 /*****************************************************************************
2653 * Stream management
2654 *****************************************************************************/
2655 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2656 {
2657 demux_sys_t *p_sys = p_demux->p_sys;
2658 unsigned int i;
2659 int b_end = true;
2660
2661 for( i = 0; i < p_sys->i_track; i++ )
2662 {
2663 avi_track_t *tk = p_sys->track[i];
2664 if( tk->i_idxposc >= tk->idx.i_size )
2665 {
2666 tk->b_eof = true;
2667 }
2668 else
2669 {
2670 b_end = false;
2671 }
2672 }
2673 return( b_end );
2674 }
2675
2676 /****************************************************************************
2677 * AVI_MovieGetLength give max streams length in second
2678 ****************************************************************************/
2679 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2680 {
2681 demux_sys_t *p_sys = p_demux->p_sys;
2682 mtime_t i_maxlength = 0;
2683 unsigned int i;
2684
2685 for( i = 0; i < p_sys->i_track; i++ )
2686 {
2687 avi_track_t *tk = p_sys->track[i];
2688 mtime_t i_length;
2689
2690 /* fix length for each stream */
2691 if( tk->idx.i_size < 1 || !tk->idx.p_entry )
2692 {
2693 continue;
2694 }
2695
2696 if( tk->i_samplesize )
2697 {
2698 i_length = AVI_GetDPTS( tk,
2699 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal +
2700 tk->idx.p_entry[tk->idx.i_size-1].i_length );
2701 }
2702 else
2703 {
2704 i_length = AVI_GetDPTS( tk, tk->idx.i_size );
2705 }
2706 i_length /= (mtime_t)1000000; /* in seconds */
2707
2708 msg_Dbg( p_demux,
2709 "stream[%d] length:%"PRId64" (based on index)",
2710 i,
2711 i_length );
2712 i_maxlength = __MAX( i_maxlength, i_length );
2713 }
2714
2715 return i_maxlength;
2716 }
[GSoC_2011] OpenGL Interface for VLC