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AVI : Don't free uninitialized ES format descriptor for DV muxed in AVI.
[vlc/asuraparaju-public.git] / modules / demux / avi / avi.c
blob55d794a3046fb71a63bbacc513b11504d3adc4f8
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, NULL,
75 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true )
76 add_integer( "avi-index", 0, NULL,
77 INDEX_TEXT, INDEX_LONGTEXT, false )
78 change_integer_list( pi_index, ppsz_indexes, NULL )
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 typedef struct
94 {
95 vlc_fourcc_t i_fourcc;
96 off_t i_pos;
97 uint32_t i_size;
98 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
99
100 uint8_t i_peek[8]; /* first 8 bytes */
101
102 unsigned int i_stream;
103 unsigned int i_cat;
104 } avi_packet_t;
105
106
107 typedef struct
108 {
109 vlc_fourcc_t i_id;
110 uint32_t i_flags;
111 off_t i_pos;
112 uint32_t i_length;
113 int64_t i_lengthtotal;
114
115 } avi_entry_t;
116
117 typedef struct
118 {
119 unsigned int i_size;
120 unsigned int i_max;
121 avi_entry_t *p_entry;
122
123 } avi_index_t;
124 static void avi_index_Init( avi_index_t * );
125 static void avi_index_Clean( avi_index_t * );
126 static void avi_index_Append( avi_index_t *, off_t *, avi_entry_t * );
127
128 typedef struct
129 {
130 bool b_activated;
131 bool b_eof;
132
133 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
134 vlc_fourcc_t i_codec;
135
136 int i_rate;
137 int i_scale;
138 unsigned int i_samplesize;
139
140 es_out_id_t *p_es;
141
142 /* Avi Index */
143 avi_index_t idx;
144
145 unsigned int i_idxposc; /* numero of chunk */
146 unsigned int i_idxposb; /* byte in the current chunk */
147
148 /* For VBR audio only */
149 unsigned int i_blockno;
150 unsigned int i_blocksize;
151
152 /* For muxed streams */
153 stream_t *p_out_muxed;
154 } avi_track_t;
155
156 struct demux_sys_t
157 {
158 mtime_t i_time;
159 mtime_t i_length;
160
161 bool b_seekable;
162 bool b_muxed;
163 avi_chunk_t ck_root;
164
165 bool b_odml;
166
167 off_t i_movi_begin;
168 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
169
170 /* number of streams and information */
171 unsigned int i_track;
172 avi_track_t **track;
173
174 /* meta */
175 vlc_meta_t *meta;
176
177 unsigned int i_attachment;
178 input_attachment_t **attachment;
179 };
180
181 static inline off_t __EVEN( off_t i )
182 {
183 return (i & 1) ? i + 1 : i;
184 }
185
186 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
187 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
188 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
189 static mtime_t AVI_GetPTS ( avi_track_t * );
190
191
192 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
193 static int AVI_StreamChunkSet ( demux_t *,
194 unsigned int i_stream, unsigned int i_ck );
195 static int AVI_StreamBytesSet ( demux_t *,
196 unsigned int i_stream, off_t i_byte );
197
198 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
199 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
200
201 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
202 static int AVI_PacketNext ( demux_t * );
203 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
204 static int AVI_PacketSearch ( demux_t * );
205
206 static void AVI_IndexLoad ( demux_t * );
207 static void AVI_IndexCreate ( demux_t * );
208
209 static void AVI_ExtractSubtitle( demux_t *, int i_stream, avi_chunk_list_t *, avi_chunk_STRING_t * );
210
211 static mtime_t AVI_MovieGetLength( demux_t * );
212
213 static void AVI_MetaLoad( demux_t *, avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih );
214
215 /*****************************************************************************
216 * Stream management
217 *****************************************************************************/
218 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
219 static int AVI_TrackStopFinishedStreams( demux_t *);
220
221 /* Remarks:
222 - For VBR mp3 stream:
223 count blocks by rounded-up chunksizes instead of chunks
224 we need full emulation of dshow avi demuxer bugs :(
225 fixes silly nandub-style a-v delaying in avi with vbr mp3...
226 (from mplayer 2002/08/02)
227 - to complete....
228 */
229
230 /*****************************************************************************
231 * Open: check file and initializes AVI structures
232 *****************************************************************************/
233 static int Open( vlc_object_t * p_this )
234 {
235 demux_t *p_demux = (demux_t *)p_this;
236 demux_sys_t *p_sys;
237
238 bool b_index = false;
239 int i_do_index;
240
241 avi_chunk_list_t *p_riff;
242 avi_chunk_list_t *p_hdrl, *p_movi;
243 avi_chunk_avih_t *p_avih;
244
245 unsigned int i_track;
246 unsigned int i, i_peeker;
247
248 const uint8_t *p_peek;
249
250 /* Is it an avi file ? */
251 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
252
253 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
254 {
255 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
256 break;
257 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
258 break;
259 p_peek++;
260 }
261 if( i_peeker == 188 )
262 {
263 return VLC_EGENERIC;
264 }
265
266 /* Initialize input structures. */
267 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
268 memset( p_sys, 0, sizeof( demux_sys_t ) );
269 p_sys->i_time = 0;
270 p_sys->i_length = 0;
271 p_sys->i_movi_lastchunk_pos = 0;
272 p_sys->b_odml = false;
273 p_sys->b_muxed = false;
274 p_sys->i_track = 0;
275 p_sys->track = NULL;
276 p_sys->meta = NULL;
277 TAB_INIT(p_sys->i_attachment, p_sys->attachment);
278
279 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
280
281 p_demux->pf_control = Control;
282 p_demux->pf_demux = Demux_Seekable;
283
284 /* For unseekable stream, automaticaly use Demux_UnSeekable */
285 if( !p_sys->b_seekable
286 || var_InheritInteger( p_demux, "avi-interleaved" ) )
287 {
288 p_demux->pf_demux = Demux_UnSeekable;
289 }
290
291 if( i_peeker > 0 )
292 {
293 stream_Read( p_demux->s, NULL, i_peeker );
294 }
295
296 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
297 {
298 msg_Err( p_demux, "avi module discarded (invalid file)" );
299 free(p_sys);
300 return VLC_EGENERIC;
301 }
302
303 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
304 {
305 unsigned int i_count =
306 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
307
308 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
309 for( i = 1; i < i_count; i++ )
310 {
311 avi_chunk_list_t *p_sysx;
312
313 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
314 if( p_sysx->i_type == AVIFOURCC_AVIX )
315 {
316 msg_Warn( p_demux, "detected OpenDML file" );
317 p_sys->b_odml = true;
318 break;
319 }
320 }
321 }
322
323 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
324 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
325 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
326
327 if( !p_hdrl || !p_movi )
328 {
329 msg_Err( p_demux, "avi module discarded (invalid file)" );
330 goto error;
331 }
332
333 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
334 {
335 msg_Err( p_demux, "cannot find avih chunk" );
336 goto error;
337 }
338 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
339 if( p_avih->i_streams != i_track )
340 {
341 msg_Warn( p_demux,
342 "found %d stream but %d are declared",
343 i_track, p_avih->i_streams );
344 }
345 if( i_track == 0 )
346 {
347 msg_Err( p_demux, "no stream defined!" );
348 goto error;
349 }
350
351 /* print information on streams */
352 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
353 i_track,
354 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
355 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
356 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
357 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
358
359 AVI_MetaLoad( p_demux, p_riff, p_avih );
360
361 /* now read info on each stream and create ES */
362 for( i = 0 ; i < i_track; i++ )
363 {
364 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
365 if( !tk )
366 goto error;
367
368 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
369 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
370 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
371 avi_chunk_strf_auds_t *p_auds = NULL;
372 avi_chunk_strf_vids_t *p_vids = NULL;
373 es_format_t fmt;
374
375 memset( tk, 0, sizeof(*tk) );
376 tk->b_eof = false;
377 tk->b_activated = true;
378
379 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
380 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
381
382 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
383 {
384 msg_Warn( p_demux, "stream[%d] incomplete", i );
385 free( tk );
386 continue;
387 }
388
389 tk->i_rate = p_strh->i_rate;
390 tk->i_scale = p_strh->i_scale;
391 tk->i_samplesize = p_strh->i_samplesize;
392 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
393 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
394
395 switch( p_strh->i_type )
396 {
397 case( AVIFOURCC_auds ):
398 tk->i_cat = AUDIO_ES;
399 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
400 p_auds->p_wf->wFormatTag );
401
402 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
403 if( tk->i_blocksize == 0 )
404 {
405 if( p_auds->p_wf->wFormatTag == 1 )
406 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
407 else
408 tk->i_blocksize = 1;
409 }
410 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
411 {
412 msg_Warn( p_demux, "track[%d] samplesize=%d and blocksize=%d are not equal."
413 "Using blocksize as a workaround.",
414 i, tk->i_samplesize, tk->i_blocksize );
415 tk->i_samplesize = tk->i_blocksize;
416 }
417
418 if( tk->i_codec == VLC_CODEC_VORBIS )
419 {
420 tk->i_blocksize = 0; /* fix vorbis VBR decoding */
421 }
422
423 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
424
425 fmt.audio.i_channels = p_auds->p_wf->nChannels;
426 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
427 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
428 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
429 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
430 fmt.b_packetized = !tk->i_blocksize;
431
432 msg_Dbg( p_demux,
433 "stream[%d] audio(0x%x) %d channels %dHz %dbits",
434 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
435 p_auds->p_wf->nSamplesPerSec,
436 p_auds->p_wf->wBitsPerSample );
437
438 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
439 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
440 fmt.p_extra = malloc( fmt.i_extra );
441 if( !fmt.p_extra ) goto error;
442 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
443 break;
444
445 case( AVIFOURCC_vids ):
446 tk->i_cat = VIDEO_ES;
447 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
448 p_vids->p_bih->biCompression );
449 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
450 {
451 msg_Dbg( p_demux, "stream[%d] subtitles", i );
452 es_format_Init( &fmt, SPU_ES, p_vids->p_bih->biCompression );
453 break;
454 }
455 else if( p_vids->p_bih->biCompression == 0x00 )
456 {
457 switch( p_vids->p_bih->biBitCount )
458 {
459 case 32:
460 tk->i_codec = VLC_CODEC_RGB32;
461 break;
462 case 24:
463 tk->i_codec = VLC_CODEC_RGB24;
464 break;
465 case 16: /* Yes it is RV15 */
466 case 15:
467 tk->i_codec = VLC_CODEC_RGB15;
468 break;
469 case 9: /* <- TODO check that */
470 tk->i_codec = VLC_CODEC_I410;
471 break;
472 case 8: /* <- TODO check that */
473 tk->i_codec = VLC_CODEC_GREY;
474 break;
475 }
476 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
477
478 switch( tk->i_codec )
479 {
480 case VLC_CODEC_RGB24:
481 case VLC_CODEC_RGB32:
482 fmt.video.i_rmask = 0x00ff0000;
483 fmt.video.i_gmask = 0x0000ff00;
484 fmt.video.i_bmask = 0x000000ff;
485 break;
486 case VLC_CODEC_RGB15:
487 fmt.video.i_rmask = 0x7c00;
488 fmt.video.i_gmask = 0x03e0;
489 fmt.video.i_bmask = 0x001f;
490 break;
491 default:
492 break;
493 }
494 }
495 else
496 {
497 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
498 if( tk->i_codec == VLC_CODEC_MP4V &&
499 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
500 {
501 fmt.i_codec =
502 fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
503 }
504 }
505 tk->i_samplesize = 0;
506 fmt.video.i_width = p_vids->p_bih->biWidth;
507 fmt.video.i_height = p_vids->p_bih->biHeight;
508 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
509 fmt.video.i_frame_rate = tk->i_rate;
510 fmt.video.i_frame_rate_base = tk->i_scale;
511 fmt.i_extra =
512 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
513 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
514 fmt.p_extra = malloc( fmt.i_extra );
515 if( !fmt.p_extra ) goto error;
516 memcpy( fmt.p_extra, &p_vids->p_bih[1], fmt.i_extra );
517
518 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
519 i, (char*)&p_vids->p_bih->biCompression,
520 (uint32_t)p_vids->p_bih->biWidth,
521 (uint32_t)p_vids->p_bih->biHeight,
522 p_vids->p_bih->biBitCount,
523 (float)tk->i_rate/(float)tk->i_scale );
524
525 if( p_vids->p_bih->biCompression == 0x00 )
526 {
527 /* RGB DIB are coded from bottom to top */
528 fmt.video.i_height =
529 (unsigned int)(-(int)p_vids->p_bih->biHeight);
530 }
531
532 /* Extract palette from extradata if bpp <= 8
533 * (assumes that extradata contains only palette but appears
534 * to be true for all palettized codecs we support) */
535 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
536 {
537 /* The palette is not always included in biSize */
538 fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
539 if( fmt.i_extra > 0 )
540 {
541 const uint8_t *p_pal = fmt.p_extra;
542
543 fmt.video.p_palette = calloc( 1, sizeof(video_palette_t) );
544 fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
545
546 for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
547 {
548 for( int j = 0; j < 4; j++ )
549 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
550 }
551 }
552 }
553 break;
554
555 case( AVIFOURCC_txts):
556 msg_Dbg( p_demux, "stream[%d] subtitle attachment", i );
557 AVI_ExtractSubtitle( p_demux, i, p_strl, p_strn );
558 free( tk );
559 continue;
560
561 case( AVIFOURCC_iavs):
562 case( AVIFOURCC_ivas):
563 p_sys->b_muxed = true;
564 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
565 if( p_strh->i_handler == FOURCC_dvsd ||
566 p_strh->i_handler == FOURCC_dvhd ||
567 p_strh->i_handler == FOURCC_dvsl ||
568 p_strh->i_handler == FOURCC_dv25 ||
569 p_strh->i_handler == FOURCC_dv50 )
570 {
571 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
572 if( !tk->p_out_muxed )
573 msg_Err( p_demux, "could not load the DV parser" );
574 else break;
575 }
576 free( tk );
577 continue;
578
579 case( AVIFOURCC_mids):
580 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
581
582 default:
583 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
584 free( tk );
585 continue;
586 }
587 if( p_strn )
588 fmt.psz_description = FromLatin1( p_strn->p_str );
589 if( tk->p_out_muxed == NULL )
590 tk->p_es = es_out_Add( p_demux->out, &fmt );
591 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
592 if(!p_sys->b_muxed )
593 {
594 es_format_Clean( &fmt );
595 }
596 }
597
598 if( p_sys->i_track <= 0 )
599 {
600 msg_Err( p_demux, "no valid track" );
601 goto error;
602 }
603
604 i_do_index = var_InheritInteger( p_demux, "avi-index" );
605 if( i_do_index == 1 ) /* Always fix */
606 {
607 aviindex:
608 if( p_sys->b_seekable )
609 {
610 AVI_IndexCreate( p_demux );
611 }
612 else
613 {
614 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
615 AVI_IndexLoad( p_demux );
616 }
617 }
618 else
619 {
620 AVI_IndexLoad( p_demux );
621 }
622
623 /* *** movie length in sec *** */
624 p_sys->i_length = AVI_MovieGetLength( p_demux );
625
626 /* Check the index completeness */
627 unsigned int i_idx_totalframes = 0;
628 for( unsigned int i = 0; i < p_sys->i_track; i++ )
629 {
630 const avi_track_t *tk = p_sys->track[i];
631 if( tk->i_cat == VIDEO_ES && tk->idx.p_entry )
632 i_idx_totalframes = __MAX(i_idx_totalframes, tk->idx.i_size);
633 continue;
634 }
635 if( i_idx_totalframes != p_avih->i_totalframes &&
636 p_sys->i_length < (mtime_t)p_avih->i_totalframes *
637 (mtime_t)p_avih->i_microsecperframe /
638 (mtime_t)1000000 )
639 {
640 if( !vlc_object_alive( p_demux) )
641 goto error;
642
643 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
644 "approximative or will exhibit strange behavior" );
645 if( i_do_index == 0 && !b_index )
646 {
647 if( !p_sys->b_seekable ) {
648 b_index = true;
649 goto aviindex;
650 }
651 switch( dialog_Question( p_demux, _("AVI Index") ,
652 _( "This AVI file is broken. Seeking will not work correctly.\n"
653 "Do you want to try to fix it?\n\n"
654 "This might take a long time." ),
655 _( "Repair" ), _( "Don't repair" ), _( "Cancel") ) )
656 {
657 case 1:
658 b_index = true;
659 msg_Dbg( p_demux, "Fixing AVI index" );
660 goto aviindex;
661 case 3:
662 /* Kill input */
663 vlc_object_kill( p_demux->p_parent );
664 goto error;
665 }
666 }
667 }
668
669 /* fix some BeOS MediaKit generated file */
670 for( i = 0 ; i < p_sys->i_track; i++ )
671 {
672 avi_track_t *tk = p_sys->track[i];
673 avi_chunk_list_t *p_strl;
674 avi_chunk_strh_t *p_strh;
675 avi_chunk_strf_auds_t *p_auds;
676
677 if( tk->i_cat != AUDIO_ES )
678 {
679 continue;
680 }
681 if( tk->idx.i_size < 1 ||
682 tk->i_scale != 1 ||
683 tk->i_samplesize != 0 )
684 {
685 continue;
686 }
687 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
688 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
689 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
690
691 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
692 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
693 {
694 int64_t i_track_length =
695 tk->idx.p_entry[tk->idx.i_size-1].i_length +
696 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal;
697 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
698 (mtime_t)p_avih->i_microsecperframe;
699
700 if( i_length == 0 )
701 {
702 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
703 continue;
704 }
705 tk->i_samplesize = 1;
706 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
707 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
708 }
709 }
710
711 if( p_sys->b_seekable )
712 {
713 /* we have read all chunk so go back to movi */
714 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
715 }
716 /* Skip movi header */
717 stream_Read( p_demux->s, NULL, 12 );
718
719 p_sys->i_movi_begin = p_movi->i_chunk_pos;
720 return VLC_SUCCESS;
721
722 error:
723 for( unsigned i = 0; i < p_sys->i_attachment; i++)
724 vlc_input_attachment_Delete(p_sys->attachment[i]);
725 free(p_sys->attachment);
726
727 if( p_sys->meta )
728 vlc_meta_Delete( p_sys->meta );
729
730 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
731 free( p_sys );
732 return vlc_object_alive( p_demux ) ? VLC_EGENERIC : VLC_ETIMEOUT;
733 }
734
735 /*****************************************************************************
736 * Close: frees unused data
737 *****************************************************************************/
738 static void Close ( vlc_object_t * p_this )
739 {
740 demux_t * p_demux = (demux_t *)p_this;
741 unsigned int i;
742 demux_sys_t *p_sys = p_demux->p_sys ;
743
744 for( i = 0; i < p_sys->i_track; i++ )
745 {
746 if( p_sys->track[i] )
747 {
748 if( p_sys->track[i]->p_out_muxed )
749 stream_Delete( p_sys->track[i]->p_out_muxed );
750 avi_index_Clean( &p_sys->track[i]->idx );
751 free( p_sys->track[i] );
752 }
753 }
754 free( p_sys->track );
755 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
756 vlc_meta_Delete( p_sys->meta );
757 for( unsigned i = 0; i < p_sys->i_attachment; i++)
758 vlc_input_attachment_Delete(p_sys->attachment[i]);
759 free(p_sys->attachment);
760
761 free( p_sys );
762 }
763
764 /*****************************************************************************
765 * Demux_Seekable: reads and demuxes data packets for stream seekable
766 *****************************************************************************
767 * AVIDemux: reads and demuxes data packets
768 *****************************************************************************
769 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
770 *****************************************************************************/
771 typedef struct
772 {
773 bool b_ok;
774
775 int i_toread;
776
777 off_t i_posf; /* where we will read :
778 if i_idxposb == 0 : begining of chunk (+8 to acces data)
779 else : point on data directly */
780 } avi_track_toread_t;
781
782 static int Demux_Seekable( demux_t *p_demux )
783 {
784 demux_sys_t *p_sys = p_demux->p_sys;
785
786 unsigned int i_track_count = 0;
787 unsigned int i_track;
788 /* cannot be more than 100 stream (dcXX or wbXX) */
789 avi_track_toread_t toread[100];
790
791
792 /* detect new selected/unselected streams */
793 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
794 {
795 avi_track_t *tk = p_sys->track[i_track];
796 bool b;
797
798 if( p_sys->b_muxed && tk->p_out_muxed )
799 {
800 i_track_count++;
801 tk->b_activated = true;
802 continue;
803 }
804
805 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
806 if( b && !tk->b_activated )
807 {
808 if( p_sys->b_seekable)
809 {
810 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
811 }
812 tk->b_activated = true;
813 }
814 else if( !b && tk->b_activated )
815 {
816 tk->b_activated = false;
817 }
818 if( b )
819 {
820 i_track_count++;
821 }
822 }
823
824 if( i_track_count <= 0 )
825 {
826 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
827
828 p_sys->i_time += 25*1000; /* read 25ms */
829 if( i_length > 0 )
830 {
831 if( p_sys->i_time >= i_length )
832 return 0;
833 return 1;
834 }
835 msg_Warn( p_demux, "no track selected, exiting..." );
836 return 0;
837 }
838
839 /* wait for the good time */
840 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
841 p_sys->i_time += 25*1000; /* read 25ms */
842
843 /* init toread */
844 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
845 {
846 avi_track_t *tk = p_sys->track[i_track];
847 mtime_t i_dpts;
848
849 toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
850 if( tk->i_idxposc < tk->idx.i_size )
851 {
852 toread[i_track].i_posf = tk->idx.p_entry[tk->i_idxposc].i_pos;
853 if( tk->i_idxposb > 0 )
854 {
855 toread[i_track].i_posf += 8 + tk->i_idxposb;
856 }
857 }
858 else
859 {
860 toread[i_track].i_posf = -1;
861 }
862
863 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
864
865 if( tk->i_samplesize )
866 {
867 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
868 }
869 else
870 {
871 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
872 }
873
874 if( i_dpts < 0 )
875 {
876 toread[i_track].i_toread *= -1;
877 }
878 }
879
880 for( ;; )
881 {
882 avi_track_t *tk;
883 bool b_done;
884 block_t *p_frame;
885 off_t i_pos;
886 unsigned int i;
887 size_t i_size;
888
889 /* search for first chunk to be read */
890 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
891 {
892 if( !toread[i].b_ok ||
893 AVI_GetDPTS( p_sys->track[i],
894 toread[i].i_toread ) <= -25 * 1000 )
895 {
896 continue;
897 }
898
899 if( toread[i].i_toread > 0 )
900 {
901 b_done = false; /* not yet finished */
902 }
903 if( toread[i].i_posf > 0 )
904 {
905 if( i_pos == -1 || i_pos > toread[i].i_posf )
906 {
907 i_track = i;
908 i_pos = toread[i].i_posf;
909 }
910 }
911 }
912
913 if( b_done )
914 {
915 for( i = 0; i < p_sys->i_track; i++ )
916 {
917 if( toread[i].b_ok )
918 return 1;
919 }
920 msg_Warn( p_demux, "all tracks have failed, exiting..." );
921 return 0;
922 }
923
924 if( i_pos == -1 )
925 {
926 int i_loop_count = 0;
927
928 /* no valid index, we will parse directly the stream
929 * in case we fail we will disable all finished stream */
930 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
931 {
932 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
933 if( AVI_PacketNext( p_demux ) )
934 {
935 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
936 }
937 }
938 else
939 {
940 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
941 }
942
943 for( ;; )
944 {
945 avi_packet_t avi_pk;
946
947 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
948 {
949 msg_Warn( p_demux,
950 "cannot get packet header, track disabled" );
951 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
952 }
953 if( avi_pk.i_stream >= p_sys->i_track ||
954 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
955 {
956 if( AVI_PacketNext( p_demux ) )
957 {
958 msg_Warn( p_demux,
959 "cannot skip packet, track disabled" );
960 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
961 }
962
963 /* Prevents from eating all the CPU with broken files.
964 * This value should be low enough so that it doesn't
965 * affect the reading speed too much. */
966 if( !(++i_loop_count % 1024) )
967 {
968 if( !vlc_object_alive (p_demux) ) return -1;
969 msleep( 10000 );
970
971 if( !(i_loop_count % (1024 * 10)) )
972 msg_Warn( p_demux,
973 "don't seem to find any data..." );
974 }
975 continue;
976 }
977 else
978 {
979 i_track = avi_pk.i_stream;
980 tk = p_sys->track[i_track];
981
982 /* add this chunk to the index */
983 avi_entry_t index;
984 index.i_id = avi_pk.i_fourcc;
985 index.i_flags = AVI_GetKeyFlag(tk->i_codec, avi_pk.i_peek);
986 index.i_pos = avi_pk.i_pos;
987 index.i_length = avi_pk.i_size;
988 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
989
990 /* do we will read this data ? */
991 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
992 {
993 break;
994 }
995 else
996 {
997 if( AVI_PacketNext( p_demux ) )
998 {
999 msg_Warn( p_demux,
1000 "cannot skip packet, track disabled" );
1001 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1002 }
1003 }
1004 }
1005 }
1006
1007 }
1008 else
1009 {
1010 stream_Seek( p_demux->s, i_pos );
1011 }
1012
1013 /* Set the track to use */
1014 tk = p_sys->track[i_track];
1015
1016 /* read thoses data */
1017 if( tk->i_samplesize )
1018 {
1019 unsigned int i_toread;
1020
1021 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1022 {
1023 if( tk->i_samplesize > 1 )
1024 {
1025 i_toread = tk->i_samplesize;
1026 }
1027 else
1028 {
1029 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1030 i_toread = __MAX( i_toread, 100 );
1031 }
1032 }
1033 i_size = __MIN( tk->idx.p_entry[tk->i_idxposc].i_length -
1034 tk->i_idxposb,
1035 i_toread );
1036 }
1037 else
1038 {
1039 i_size = tk->idx.p_entry[tk->i_idxposc].i_length;
1040 }
1041
1042 if( tk->i_idxposb == 0 )
1043 {
1044 i_size += 8; /* need to read and skip header */
1045 }
1046
1047 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1048 {
1049 msg_Warn( p_demux, "failed reading data" );
1050 tk->b_eof = false;
1051 toread[i_track].b_ok = false;
1052 continue;
1053 }
1054 if( i_size % 2 ) /* read was padded on word boundary */
1055 {
1056 p_frame->i_buffer--;
1057 }
1058 /* skip header */
1059 if( tk->i_idxposb == 0 )
1060 {
1061 p_frame->p_buffer += 8;
1062 p_frame->i_buffer -= 8;
1063 }
1064 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1065 if( tk->idx.p_entry[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1066 {
1067 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1068 }
1069 else
1070 {
1071 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1072 }
1073
1074 /* read data */
1075 if( tk->i_samplesize )
1076 {
1077 if( tk->i_idxposb == 0 )
1078 {
1079 i_size -= 8;
1080 }
1081 toread[i_track].i_toread -= i_size;
1082 tk->i_idxposb += i_size;
1083 if( tk->i_idxposb >=
1084 tk->idx.p_entry[tk->i_idxposc].i_length )
1085 {
1086 tk->i_idxposb = 0;
1087 tk->i_idxposc++;
1088 }
1089 }
1090 else
1091 {
1092 int i_length = tk->idx.p_entry[tk->i_idxposc].i_length;
1093
1094 tk->i_idxposc++;
1095 if( tk->i_cat == AUDIO_ES )
1096 {
1097 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1098 }
1099 toread[i_track].i_toread--;
1100 }
1101
1102 if( tk->i_idxposc < tk->idx.i_size)
1103 {
1104 toread[i_track].i_posf =
1105 tk->idx.p_entry[tk->i_idxposc].i_pos;
1106 if( tk->i_idxposb > 0 )
1107 {
1108 toread[i_track].i_posf += 8 + tk->i_idxposb;
1109 }
1110
1111 }
1112 else
1113 {
1114 toread[i_track].i_posf = -1;
1115 }
1116
1117 if( tk->i_cat != VIDEO_ES )
1118 p_frame->i_dts = p_frame->i_pts;
1119 else
1120 {
1121 p_frame->i_dts = p_frame->i_pts;
1122 p_frame->i_pts = VLC_TS_INVALID;
1123 }
1124
1125 //p_pes->i_rate = p_demux->stream.control.i_rate;
1126 if( tk->p_out_muxed )
1127 stream_DemuxSend( tk->p_out_muxed, p_frame );
1128 else
1129 es_out_Send( p_demux->out, tk->p_es, p_frame );
1130 }
1131 }
1132
1133
1134 /*****************************************************************************
1135 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1136 *****************************************************************************
1137 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1138 *****************************************************************************/
1139 static int Demux_UnSeekable( demux_t *p_demux )
1140 {
1141 demux_sys_t *p_sys = p_demux->p_sys;
1142 avi_track_t *p_stream_master = NULL;
1143 unsigned int i_stream;
1144 unsigned int i_packet;
1145
1146 if( p_sys->b_muxed )
1147 {
1148 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1149 return VLC_EGENERIC;
1150 }
1151
1152 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1153
1154 /* *** find master stream for data packet skipping algo *** */
1155 /* *** -> first video, if any, or first audio ES *** */
1156 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1157 {
1158 avi_track_t *tk = p_sys->track[i_stream];
1159 bool b;
1160
1161 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1162
1163 if( b && tk->i_cat == VIDEO_ES )
1164 {
1165 p_stream_master = tk;
1166 }
1167 else if( b )
1168 {
1169 p_stream_master = tk;
1170 }
1171 }
1172
1173 if( !p_stream_master )
1174 {
1175 msg_Warn( p_demux, "no more stream selected" );
1176 return( 0 );
1177 }
1178
1179 p_sys->i_time = AVI_GetPTS( p_stream_master );
1180
1181 for( i_packet = 0; i_packet < 10; i_packet++)
1182 {
1183 #define p_stream p_sys->track[avi_pk.i_stream]
1184
1185 avi_packet_t avi_pk;
1186
1187 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1188 {
1189 return( 0 );
1190 }
1191
1192 if( avi_pk.i_stream >= p_sys->i_track ||
1193 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1194 {
1195 /* we haven't found an audio or video packet:
1196 * - we have seek, found first next packet
1197 * - others packets could be found, skip them
1198 */
1199 switch( avi_pk.i_fourcc )
1200 {
1201 case AVIFOURCC_JUNK:
1202 case AVIFOURCC_LIST:
1203 case AVIFOURCC_RIFF:
1204 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1205 case AVIFOURCC_idx1:
1206 if( p_sys->b_odml )
1207 {
1208 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1209 }
1210 return( 0 ); /* eof */
1211 default:
1212 msg_Warn( p_demux,
1213 "seems to have lost position, resync" );
1214 if( AVI_PacketSearch( p_demux ) )
1215 {
1216 msg_Err( p_demux, "resync failed" );
1217 return( -1 );
1218 }
1219 }
1220 }
1221 else
1222 {
1223 /* check for time */
1224 if( __ABS( AVI_GetPTS( p_stream ) -
1225 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1226 {
1227 /* load it and send to decoder */
1228 block_t *p_frame;
1229 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1230 {
1231 return( -1 );
1232 }
1233 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1234
1235 if( avi_pk.i_cat != VIDEO_ES )
1236 p_frame->i_dts = p_frame->i_pts;
1237 else
1238 {
1239 p_frame->i_dts = p_frame->i_pts;
1240 p_frame->i_pts = VLC_TS_INVALID;
1241 }
1242
1243 //p_pes->i_rate = p_demux->stream.control.i_rate;
1244 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1245 }
1246 else
1247 {
1248 if( AVI_PacketNext( p_demux ) )
1249 {
1250 return( 0 );
1251 }
1252 }
1253
1254 /* *** update stream time position *** */
1255 if( p_stream->i_samplesize )
1256 {
1257 p_stream->i_idxposb += avi_pk.i_size;
1258 }
1259 else
1260 {
1261 if( p_stream->i_cat == AUDIO_ES )
1262 {
1263 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1264 }
1265 p_stream->i_idxposc++;
1266 }
1267
1268 }
1269 #undef p_stream
1270 }
1271
1272 return( 1 );
1273 }
1274
1275 /*****************************************************************************
1276 * Seek: goto to i_date or i_percent
1277 *****************************************************************************/
1278 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1279 {
1280
1281 demux_sys_t *p_sys = p_demux->p_sys;
1282 unsigned int i_stream;
1283 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1284 i_date / 1000000, i_percent );
1285
1286 if( p_sys->b_seekable )
1287 {
1288 if( !p_sys->i_length )
1289 {
1290 avi_track_t *p_stream;
1291 int64_t i_pos;
1292
1293 /* use i_percent to create a true i_date */
1294 msg_Warn( p_demux, "seeking without index at %d%%"
1295 " only works for interleaved files", i_percent );
1296 if( i_percent >= 100 )
1297 {
1298 msg_Warn( p_demux, "cannot seek so far !" );
1299 return VLC_EGENERIC;
1300 }
1301 i_percent = __MAX( i_percent, 0 );
1302
1303 /* try to find chunk that is at i_percent or the file */
1304 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1305 p_sys->i_movi_begin );
1306 /* search first selected stream (and prefer non eof ones) */
1307 for( i_stream = 0, p_stream = NULL;
1308 i_stream < p_sys->i_track; i_stream++ )
1309 {
1310 if( !p_stream || p_stream->b_eof )
1311 p_stream = p_sys->track[i_stream];
1312
1313 if( p_stream->b_activated && !p_stream->b_eof )
1314 break;
1315 }
1316 if( !p_stream || !p_stream->b_activated )
1317 {
1318 msg_Warn( p_demux, "cannot find any selected stream" );
1319 return VLC_EGENERIC;
1320 }
1321
1322 /* be sure that the index exist */
1323 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1324 {
1325 msg_Warn( p_demux, "cannot seek" );
1326 return VLC_EGENERIC;
1327 }
1328
1329 while( i_pos >= p_stream->idx.p_entry[p_stream->i_idxposc].i_pos +
1330 p_stream->idx.p_entry[p_stream->i_idxposc].i_length + 8 )
1331 {
1332 /* search after i_idxposc */
1333 if( AVI_StreamChunkSet( p_demux,
1334 i_stream, p_stream->i_idxposc + 1 ) )
1335 {
1336 msg_Warn( p_demux, "cannot seek" );
1337 return VLC_EGENERIC;
1338 }
1339 }
1340
1341 i_date = AVI_GetPTS( p_stream );
1342 /* TODO better support for i_samplesize != 0 */
1343 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1344 }
1345
1346 /* */
1347 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1348 {
1349 avi_track_t *p_stream = p_sys->track[i_stream];
1350
1351 if( !p_stream->b_activated )
1352 continue;
1353
1354 p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_date ) != 0;
1355 }
1356 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1357 p_sys->i_time = i_date;
1358 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1359 return VLC_SUCCESS;
1360 }
1361 else
1362 {
1363 msg_Err( p_demux, "shouldn't yet be executed" );
1364 return VLC_EGENERIC;
1365 }
1366 }
1367
1368 /*****************************************************************************
1369 * Control:
1370 *****************************************************************************/
1371 static double ControlGetPosition( demux_t *p_demux )
1372 {
1373 demux_sys_t *p_sys = p_demux->p_sys;
1374
1375 if( p_sys->i_length > 0 )
1376 {
1377 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1378 }
1379 else if( stream_Size( p_demux->s ) > 0 )
1380 {
1381 unsigned int i;
1382 int64_t i_tmp;
1383 int64_t i64 = 0;
1384
1385 /* search the more advanced selected es */
1386 for( i = 0; i < p_sys->i_track; i++ )
1387 {
1388 avi_track_t *tk = p_sys->track[i];
1389 if( tk->b_activated && tk->i_idxposc < tk->idx.i_size )
1390 {
1391 i_tmp = tk->idx.p_entry[tk->i_idxposc].i_pos +
1392 tk->idx.p_entry[tk->i_idxposc].i_length + 8;
1393 if( i_tmp > i64 )
1394 {
1395 i64 = i_tmp;
1396 }
1397 }
1398 }
1399 return (double)i64 / stream_Size( p_demux->s );
1400 }
1401 return 0.0;
1402 }
1403
1404 static int Control( demux_t *p_demux, int i_query, va_list args )
1405 {
1406 demux_sys_t *p_sys = p_demux->p_sys;
1407 int i;
1408 double f, *pf;
1409 int64_t i64, *pi64;
1410 vlc_meta_t *p_meta;
1411
1412 switch( i_query )
1413 {
1414 case DEMUX_GET_POSITION:
1415 pf = (double*)va_arg( args, double * );
1416 *pf = ControlGetPosition( p_demux );
1417 return VLC_SUCCESS;
1418 case DEMUX_SET_POSITION:
1419 f = (double)va_arg( args, double );
1420 if( p_sys->b_seekable )
1421 {
1422 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1423 return Seek( p_demux, i64, (int)(f * 100) );
1424 }
1425 else
1426 {
1427 int64_t i_pos = stream_Size( p_demux->s ) * f;
1428 return stream_Seek( p_demux->s, i_pos );
1429 }
1430
1431 case DEMUX_GET_TIME:
1432 pi64 = (int64_t*)va_arg( args, int64_t * );
1433 *pi64 = p_sys->i_time;
1434 return VLC_SUCCESS;
1435
1436 case DEMUX_SET_TIME:
1437 {
1438 int i_percent = 0;
1439
1440 i64 = (int64_t)va_arg( args, int64_t );
1441 if( p_sys->i_length > 0 )
1442 {
1443 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1444 }
1445 else if( p_sys->i_time > 0 )
1446 {
1447 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1448 (double)i64 / (double)p_sys->i_time );
1449 }
1450 return Seek( p_demux, i64, i_percent );
1451 }
1452 case DEMUX_GET_LENGTH:
1453 pi64 = (int64_t*)va_arg( args, int64_t * );
1454 *pi64 = p_sys->i_length * (mtime_t)1000000;
1455 return VLC_SUCCESS;
1456
1457 case DEMUX_GET_FPS:
1458 pf = (double*)va_arg( args, double * );
1459 *pf = 0.0;
1460 for( i = 0; i < (int)p_sys->i_track; i++ )
1461 {
1462 avi_track_t *tk = p_sys->track[i];
1463 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1464 {
1465 *pf = (float)tk->i_rate / (float)tk->i_scale;
1466 break;
1467 }
1468 }
1469 return VLC_SUCCESS;
1470
1471 case DEMUX_GET_META:
1472 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1473 vlc_meta_Merge( p_meta, p_sys->meta );
1474 return VLC_SUCCESS;
1475
1476 case DEMUX_GET_ATTACHMENTS:
1477 {
1478 if( p_sys->i_attachment <= 0 )
1479 return VLC_EGENERIC;
1480
1481 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1482 int *pi_int = va_arg( args, int * );
1483
1484 *pi_int = p_sys->i_attachment;
1485 *ppp_attach = calloc( p_sys->i_attachment, sizeof(*ppp_attach));
1486 for( unsigned i = 0; i < p_sys->i_attachment && *ppp_attach; i++ )
1487 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachment[i] );
1488 return VLC_SUCCESS;
1489 }
1490
1491 default:
1492 return VLC_EGENERIC;
1493 }
1494 }
1495
1496 /*****************************************************************************
1497 * Function to convert pts to chunk or byte
1498 *****************************************************************************/
1499
1500 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1501 {
1502 if( !tk->i_scale )
1503 return (mtime_t)0;
1504
1505 return (mtime_t)((int64_t)i_pts *
1506 (int64_t)tk->i_rate /
1507 (int64_t)tk->i_scale /
1508 (int64_t)1000000 );
1509 }
1510 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1511 {
1512 if( !tk->i_scale || !tk->i_samplesize )
1513 return (mtime_t)0;
1514
1515 return (mtime_t)((int64_t)i_pts *
1516 (int64_t)tk->i_rate /
1517 (int64_t)tk->i_scale /
1518 (int64_t)1000000 *
1519 (int64_t)tk->i_samplesize );
1520 }
1521
1522 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1523 {
1524 mtime_t i_dpts = 0;
1525
1526 if( !tk->i_rate )
1527 return i_dpts;
1528
1529 i_dpts = (mtime_t)( (int64_t)1000000 *
1530 (int64_t)i_count *
1531 (int64_t)tk->i_scale /
1532 (int64_t)tk->i_rate );
1533
1534 if( tk->i_samplesize )
1535 {
1536 return i_dpts / tk->i_samplesize;
1537 }
1538 return i_dpts;
1539 }
1540
1541 static mtime_t AVI_GetPTS( avi_track_t *tk )
1542 {
1543 if( tk->i_samplesize )
1544 {
1545 int64_t i_count = 0;
1546
1547 /* we need a valid entry we will emulate one */
1548 if( tk->i_idxposc == tk->idx.i_size )
1549 {
1550 if( tk->i_idxposc )
1551 {
1552 /* use the last entry */
1553 i_count = tk->idx.p_entry[tk->idx.i_size - 1].i_lengthtotal
1554 + tk->idx.p_entry[tk->idx.i_size - 1].i_length;
1555 }
1556 }
1557 else
1558 {
1559 i_count = tk->idx.p_entry[tk->i_idxposc].i_lengthtotal;
1560 }
1561 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1562 }
1563 else
1564 {
1565 if( tk->i_cat == AUDIO_ES )
1566 {
1567 return AVI_GetDPTS( tk, tk->i_blockno );
1568 }
1569 else
1570 {
1571 return AVI_GetDPTS( tk, tk->i_idxposc );
1572 }
1573 }
1574 }
1575
1576 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1577 {
1578 demux_sys_t *p_sys = p_demux->p_sys;
1579 avi_packet_t avi_pk;
1580 int i_loop_count = 0;
1581
1582 /* find first chunk of i_stream that isn't in index */
1583
1584 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1585 {
1586 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1587 if( AVI_PacketNext( p_demux ) )
1588 {
1589 return VLC_EGENERIC;
1590 }
1591 }
1592 else
1593 {
1594 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1595 }
1596
1597 for( ;; )
1598 {
1599 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1600
1601 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1602 {
1603 msg_Warn( p_demux, "cannot get packet header" );
1604 return VLC_EGENERIC;
1605 }
1606 if( avi_pk.i_stream >= p_sys->i_track ||
1607 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1608 {
1609 if( AVI_PacketNext( p_demux ) )
1610 {
1611 return VLC_EGENERIC;
1612 }
1613
1614 /* Prevents from eating all the CPU with broken files.
1615 * This value should be low enough so that it doesn't
1616 * affect the reading speed too much. */
1617 if( !(++i_loop_count % 1024) )
1618 {
1619 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1620 msleep( 10000 );
1621
1622 if( !(i_loop_count % (1024 * 10)) )
1623 msg_Warn( p_demux, "don't seem to find any data..." );
1624 }
1625 }
1626 else
1627 {
1628 avi_track_t *tk_pk = p_sys->track[avi_pk.i_stream];
1629
1630 /* add this chunk to the index */
1631 avi_entry_t index;
1632 index.i_id = avi_pk.i_fourcc;
1633 index.i_flags = AVI_GetKeyFlag(tk_pk->i_codec, avi_pk.i_peek);
1634 index.i_pos = avi_pk.i_pos;
1635 index.i_length = avi_pk.i_size;
1636 avi_index_Append( &tk_pk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1637
1638 if( avi_pk.i_stream == i_stream )
1639 {
1640 return VLC_SUCCESS;
1641 }
1642
1643 if( AVI_PacketNext( p_demux ) )
1644 {
1645 return VLC_EGENERIC;
1646 }
1647 }
1648 }
1649 }
1650
1651 /* be sure that i_ck will be a valid index entry */
1652 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1653 unsigned int i_ck )
1654 {
1655 demux_sys_t *p_sys = p_demux->p_sys;
1656 avi_track_t *p_stream = p_sys->track[i_stream];
1657
1658 p_stream->i_idxposc = i_ck;
1659 p_stream->i_idxposb = 0;
1660
1661 if( i_ck >= p_stream->idx.i_size )
1662 {
1663 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1664 do
1665 {
1666 p_stream->i_idxposc++;
1667 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1668 {
1669 return VLC_EGENERIC;
1670 }
1671
1672 } while( p_stream->i_idxposc < i_ck );
1673 }
1674
1675 return VLC_SUCCESS;
1676 }
1677
1678 /* XXX FIXME up to now, we assume that all chunk are one after one */
1679 static int AVI_StreamBytesSet( demux_t *p_demux,
1680 unsigned int i_stream,
1681 off_t i_byte )
1682 {
1683 demux_sys_t *p_sys = p_demux->p_sys;
1684 avi_track_t *p_stream = p_sys->track[i_stream];
1685
1686 if( ( p_stream->idx.i_size > 0 )
1687 &&( i_byte < p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_lengthtotal +
1688 p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_length ) )
1689 {
1690 /* index is valid to find the ck */
1691 /* uses dichototmie to be fast enougth */
1692 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->idx.i_size - 1 );
1693 int i_idxmax = p_stream->idx.i_size;
1694 int i_idxmin = 0;
1695 for( ;; )
1696 {
1697 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal > i_byte )
1698 {
1699 i_idxmax = i_idxposc ;
1700 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1701 }
1702 else
1703 {
1704 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal +
1705 p_stream->idx.p_entry[i_idxposc].i_length <= i_byte)
1706 {
1707 i_idxmin = i_idxposc ;
1708 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1709 }
1710 else
1711 {
1712 p_stream->i_idxposc = i_idxposc;
1713 p_stream->i_idxposb = i_byte -
1714 p_stream->idx.p_entry[i_idxposc].i_lengthtotal;
1715 return VLC_SUCCESS;
1716 }
1717 }
1718 }
1719
1720 }
1721 else
1722 {
1723 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1724 p_stream->i_idxposb = 0;
1725 do
1726 {
1727 p_stream->i_idxposc++;
1728 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1729 {
1730 return VLC_EGENERIC;
1731 }
1732
1733 } while( p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal +
1734 p_stream->idx.p_entry[p_stream->i_idxposc].i_length <= i_byte );
1735
1736 p_stream->i_idxposb = i_byte -
1737 p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal;
1738 return VLC_SUCCESS;
1739 }
1740 }
1741
1742 static int AVI_TrackSeek( demux_t *p_demux,
1743 int i_stream,
1744 mtime_t i_date )
1745 {
1746 demux_sys_t *p_sys = p_demux->p_sys;
1747 avi_track_t *tk = p_sys->track[i_stream];
1748
1749 #define p_stream p_sys->track[i_stream]
1750 mtime_t i_oldpts;
1751
1752 i_oldpts = AVI_GetPTS( p_stream );
1753
1754 if( !p_stream->i_samplesize )
1755 {
1756 if( AVI_StreamChunkSet( p_demux,
1757 i_stream,
1758 AVI_PTSToChunk( p_stream, i_date ) ) )
1759 {
1760 return VLC_EGENERIC;
1761 }
1762
1763 if( p_stream->i_cat == AUDIO_ES )
1764 {
1765 unsigned int i;
1766 tk->i_blockno = 0;
1767 for( i = 0; i < tk->i_idxposc; i++ )
1768 {
1769 if( tk->i_blocksize > 0 )
1770 {
1771 tk->i_blockno += ( tk->idx.p_entry[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1772 }
1773 else
1774 {
1775 tk->i_blockno++;
1776 }
1777 }
1778 }
1779
1780 msg_Dbg( p_demux,
1781 "old:%"PRId64" %s new %"PRId64,
1782 i_oldpts,
1783 i_oldpts > i_date ? ">" : "<",
1784 i_date );
1785
1786 if( p_stream->i_cat == VIDEO_ES )
1787 {
1788 /* search key frame */
1789 //if( i_date < i_oldpts || 1 )
1790 {
1791 while( p_stream->i_idxposc > 0 &&
1792 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1793 AVIIF_KEYFRAME ) )
1794 {
1795 if( AVI_StreamChunkSet( p_demux,
1796 i_stream,
1797 p_stream->i_idxposc - 1 ) )
1798 {
1799 return VLC_EGENERIC;
1800 }
1801 }
1802 }
1803 #if 0
1804 else
1805 {
1806 while( p_stream->i_idxposc < p_stream->idx.i_size &&
1807 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
1808 AVIIF_KEYFRAME ) )
1809 {
1810 if( AVI_StreamChunkSet( p_demux,
1811 i_stream,
1812 p_stream->i_idxposc + 1 ) )
1813 {
1814 return VLC_EGENERIC;
1815 }
1816 }
1817 }
1818 #endif
1819 }
1820 }
1821 else
1822 {
1823 if( AVI_StreamBytesSet( p_demux,
1824 i_stream,
1825 AVI_PTSToByte( p_stream, i_date ) ) )
1826 {
1827 return VLC_EGENERIC;
1828 }
1829 }
1830 return VLC_SUCCESS;
1831 #undef p_stream
1832 }
1833
1834 /****************************************************************************
1835 * Return true if it's a key frame
1836 ****************************************************************************/
1837 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1838 {
1839 switch( i_fourcc )
1840 {
1841 case VLC_CODEC_DIV1:
1842 /* we have:
1843 * startcode: 0x00000100 32bits
1844 * framenumber ? 5bits
1845 * piture type 0(I),1(P) 2bits
1846 */
1847 if( GetDWBE( p_byte ) != 0x00000100 )
1848 {
1849 /* it's not an msmpegv1 stream, strange...*/
1850 return AVIIF_KEYFRAME;
1851 }
1852 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1853
1854 case VLC_CODEC_DIV2:
1855 case VLC_CODEC_DIV3:
1856 case VLC_CODEC_WMV1:
1857 /* we have
1858 * picture type 0(I),1(P) 2bits
1859 */
1860 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1861 case VLC_CODEC_MP4V:
1862 /* we should find first occurrence of 0x000001b6 (32bits)
1863 * startcode: 0x000001b6 32bits
1864 * piture type 0(I),1(P) 2bits
1865 */
1866 if( GetDWBE( p_byte ) != 0x000001b6 )
1867 {
1868 /* not true , need to find the first VOP header */
1869 return AVIIF_KEYFRAME;
1870 }
1871 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1872
1873 default:
1874 /* I can't do it, so say yes */
1875 return AVIIF_KEYFRAME;
1876 }
1877 }
1878
1879 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1880 {
1881 switch( i_cat )
1882 {
1883 case AUDIO_ES:
1884 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1885 return i_codec;
1886 case VIDEO_ES:
1887 return vlc_fourcc_GetCodec( i_cat, i_codec );
1888 default:
1889 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1890 }
1891 }
1892
1893 /****************************************************************************
1894 *
1895 ****************************************************************************/
1896 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1897 unsigned int *pi_number, unsigned int *pi_type )
1898 {
1899 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1900 int c1, c2;
1901
1902 c1 = ((uint8_t *)&i_id)[0];
1903 c2 = ((uint8_t *)&i_id)[1];
1904
1905 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1906 {
1907 SET_PTR( pi_number, 100 ); /* > max stream number */
1908 SET_PTR( pi_type, UNKNOWN_ES );
1909 }
1910 else
1911 {
1912 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1913 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1914 {
1915 case AVITWOCC_wb:
1916 SET_PTR( pi_type, AUDIO_ES );
1917 break;
1918 case AVITWOCC_dc:
1919 case AVITWOCC_db:
1920 case AVITWOCC_AC:
1921 SET_PTR( pi_type, VIDEO_ES );
1922 break;
1923 case AVITWOCC_tx:
1924 SET_PTR( pi_type, SPU_ES );
1925 break;
1926 default:
1927 SET_PTR( pi_type, UNKNOWN_ES );
1928 break;
1929 }
1930 }
1931 #undef SET_PTR
1932 }
1933
1934 /****************************************************************************
1935 *
1936 ****************************************************************************/
1937 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1938 {
1939 const uint8_t *p_peek;
1940
1941 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1942 {
1943 return VLC_EGENERIC;
1944 }
1945 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1946 p_pk->i_size = GetDWLE( p_peek + 4 );
1947 p_pk->i_pos = stream_Tell( p_demux->s );
1948 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1949 {
1950 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1951 p_peek[10], p_peek[11] );
1952 }
1953 else
1954 {
1955 p_pk->i_type = 0;
1956 }
1957
1958 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1959
1960 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1961 return VLC_SUCCESS;
1962 }
1963
1964 static int AVI_PacketNext( demux_t *p_demux )
1965 {
1966 avi_packet_t avi_ck;
1967 int i_skip = 0;
1968
1969 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1970 {
1971 return VLC_EGENERIC;
1972 }
1973
1974 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1975 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
1976 {
1977 i_skip = 12;
1978 }
1979 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
1980 avi_ck.i_type == AVIFOURCC_AVIX )
1981 {
1982 i_skip = 24;
1983 }
1984 else
1985 {
1986 i_skip = __EVEN( avi_ck.i_size ) + 8;
1987 }
1988
1989 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
1990 {
1991 return VLC_EGENERIC;
1992 }
1993 return VLC_SUCCESS;
1994 }
1995
1996 static int AVI_PacketRead( demux_t *p_demux,
1997 avi_packet_t *p_pk,
1998 block_t **pp_frame )
1999 {
2000 size_t i_size;
2001
2002 i_size = __EVEN( p_pk->i_size + 8 );
2003
2004 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2005 {
2006 return VLC_EGENERIC;
2007 }
2008 (*pp_frame)->p_buffer += 8;
2009 (*pp_frame)->i_buffer -= 8;
2010
2011 if( i_size != p_pk->i_size + 8 )
2012 {
2013 (*pp_frame)->i_buffer--;
2014 }
2015
2016 return VLC_SUCCESS;
2017 }
2018
2019 static int AVI_PacketSearch( demux_t *p_demux )
2020 {
2021 demux_sys_t *p_sys = p_demux->p_sys;
2022 avi_packet_t avi_pk;
2023 int i_count = 0;
2024
2025 for( ;; )
2026 {
2027 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2028 {
2029 return VLC_EGENERIC;
2030 }
2031 AVI_PacketGetHeader( p_demux, &avi_pk );
2032 if( avi_pk.i_stream < p_sys->i_track &&
2033 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2034 {
2035 return VLC_SUCCESS;
2036 }
2037 switch( avi_pk.i_fourcc )
2038 {
2039 case AVIFOURCC_JUNK:
2040 case AVIFOURCC_LIST:
2041 case AVIFOURCC_RIFF:
2042 case AVIFOURCC_idx1:
2043 return VLC_SUCCESS;
2044 }
2045
2046 /* Prevents from eating all the CPU with broken files.
2047 * This value should be low enough so that it doesn't affect the
2048 * reading speed too much (not that we care much anyway because
2049 * this code is called only on broken files). */
2050 if( !(++i_count % 1024) )
2051 {
2052 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2053
2054 msleep( 10000 );
2055 if( !(i_count % (1024 * 10)) )
2056 msg_Warn( p_demux, "trying to resync..." );
2057 }
2058 }
2059 }
2060
2061 /****************************************************************************
2062 * Index stuff.
2063 ****************************************************************************/
2064 static void avi_index_Init( avi_index_t *p_index )
2065 {
2066 p_index->i_size = 0;
2067 p_index->i_max = 0;
2068 p_index->p_entry = NULL;
2069 }
2070 static void avi_index_Clean( avi_index_t *p_index )
2071 {
2072 free( p_index->p_entry );
2073 }
2074 static void avi_index_Append( avi_index_t *p_index, off_t *pi_last_pos,
2075 avi_entry_t *p_entry )
2076 {
2077 /* Update last chunk position */
2078 if( *pi_last_pos < p_entry->i_pos )
2079 *pi_last_pos = p_entry->i_pos;
2080
2081 /* add the entry */
2082 if( p_index->i_size >= p_index->i_max )
2083 {
2084 p_index->i_max += 16384;
2085 p_index->p_entry = realloc_or_free( p_index->p_entry,
2086 p_index->i_max * sizeof( *p_index->p_entry ) );
2087 if( !p_index->p_entry )
2088 return;
2089 }
2090 /* calculate cumulate length */
2091 if( p_index->i_size > 0 )
2092 {
2093 p_entry->i_lengthtotal =
2094 p_index->p_entry[p_index->i_size - 1].i_length +
2095 p_index->p_entry[p_index->i_size - 1].i_lengthtotal;
2096 }
2097 else
2098 {
2099 p_entry->i_lengthtotal = 0;
2100 }
2101
2102 p_index->p_entry[p_index->i_size++] = *p_entry;
2103 }
2104
2105 static int AVI_IndexFind_idx1( demux_t *p_demux,
2106 avi_chunk_idx1_t **pp_idx1,
2107 uint64_t *pi_offset )
2108 {
2109 demux_sys_t *p_sys = p_demux->p_sys;
2110
2111 avi_chunk_list_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2112 avi_chunk_idx1_t *p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2113
2114 if( !p_idx1 )
2115 {
2116 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2117 return VLC_EGENERIC;
2118 }
2119 *pp_idx1 = p_idx1;
2120
2121 /* *** calculate offset *** */
2122 /* Well, avi is __SHIT__ so test more than one entry
2123 * (needed for some avi files) */
2124 avi_chunk_list_t *p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2125 *pi_offset = 0;
2126 for( unsigned i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2127 {
2128 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2129 {
2130 *pi_offset = p_movi->i_chunk_pos + 8;
2131 break;
2132 }
2133 }
2134 return VLC_SUCCESS;
2135 }
2136
2137 static int AVI_IndexLoad_idx1( demux_t *p_demux,
2138 avi_index_t p_index[], off_t *pi_last_offset )
2139 {
2140 demux_sys_t *p_sys = p_demux->p_sys;
2141
2142 avi_chunk_idx1_t *p_idx1;
2143 uint64_t i_offset;
2144 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2145 return VLC_EGENERIC;
2146
2147 for( unsigned i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2148 {
2149 unsigned i_cat;
2150 unsigned i_stream;
2151
2152 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2153 &i_stream,
2154 &i_cat );
2155 if( i_stream < p_sys->i_track &&
2156 i_cat == p_sys->track[i_stream]->i_cat )
2157 {
2158 avi_entry_t index;
2159 index.i_id = p_idx1->entry[i_index].i_fourcc;
2160 index.i_flags = p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2161 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2162 index.i_length = p_idx1->entry[i_index].i_length;
2163
2164 avi_index_Append( &p_index[i_stream], pi_last_offset, &index );
2165 }
2166 }
2167 return VLC_SUCCESS;
2168 }
2169
2170 static void __Parse_indx( demux_t *p_demux, avi_index_t *p_index, off_t *pi_max_offset,
2171 avi_chunk_indx_t *p_indx )
2172 {
2173 avi_entry_t index;
2174
2175 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2176 if( p_indx->i_indexsubtype == 0 )
2177 {
2178 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2179 {
2180 index.i_id = p_indx->i_id;
2181 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2182 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2183 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2184
2185 avi_index_Append( p_index, pi_max_offset, &index );
2186 }
2187 }
2188 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2189 {
2190 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2191 {
2192 index.i_id = p_indx->i_id;
2193 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2194 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2195 index.i_length = p_indx->idx.field[i].i_size;
2196
2197 avi_index_Append( p_index, pi_max_offset, &index );
2198 }
2199 }
2200 else
2201 {
2202 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2203 }
2204 }
2205
2206 static void AVI_IndexLoad_indx( demux_t *p_demux,
2207 avi_index_t p_index[], off_t *pi_last_offset )
2208 {
2209 demux_sys_t *p_sys = p_demux->p_sys;
2210
2211 avi_chunk_list_t *p_riff;
2212 avi_chunk_list_t *p_hdrl;
2213
2214 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2215 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2216
2217 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2218 {
2219 avi_chunk_list_t *p_strl;
2220 avi_chunk_indx_t *p_indx;
2221
2222 #define p_stream p_sys->track[i_stream]
2223 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2224 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2225
2226 if( !p_indx )
2227 {
2228 if( p_sys->b_odml )
2229 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2230 "file?)" );
2231 continue;
2232 }
2233
2234 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2235 {
2236 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, p_indx );
2237 }
2238 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2239 {
2240 avi_chunk_t ck_sub;
2241 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2242 {
2243 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2244 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2245 {
2246 break;
2247 }
2248 if( ck_sub.indx.i_indextype == AVI_INDEX_OF_CHUNKS )
2249 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, &ck_sub.indx );
2250 AVI_ChunkFree( p_demux->s, &ck_sub );
2251 }
2252 }
2253 else
2254 {
2255 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2256 }
2257 #undef p_stream
2258 }
2259 }
2260
2261 static void AVI_IndexLoad( demux_t *p_demux )
2262 {
2263 demux_sys_t *p_sys = p_demux->p_sys;
2264
2265 /* Load indexes */
2266 assert( p_sys->i_track <= 100 );
2267 avi_index_t p_idx_indx[p_sys->i_track];
2268 avi_index_t p_idx_idx1[p_sys->i_track];
2269 for( unsigned i = 0; i < p_sys->i_track; i++ )
2270 {
2271 avi_index_Init( &p_idx_indx[i] );
2272 avi_index_Init( &p_idx_idx1[i] );
2273 }
2274 off_t i_indx_last_pos = p_sys->i_movi_lastchunk_pos;
2275 off_t i_idx1_last_pos = p_sys->i_movi_lastchunk_pos;
2276
2277 AVI_IndexLoad_indx( p_demux, p_idx_indx, &i_indx_last_pos );
2278 if( !p_sys->b_odml )
2279 AVI_IndexLoad_idx1( p_demux, p_idx_idx1, &i_idx1_last_pos );
2280
2281 /* Select the longest index */
2282 for( unsigned i = 0; i < p_sys->i_track; i++ )
2283 {
2284 if( p_idx_indx[i].i_size > p_idx_idx1[i].i_size )
2285 {
2286 msg_Dbg( p_demux, "selected ODML index for stream[%u]", i );
2287 p_sys->track[i]->idx = p_idx_indx[i];
2288 avi_index_Clean( &p_idx_idx1[i] );
2289 }
2290 else
2291 {
2292 msg_Dbg( p_demux, "selected standard index for stream[%u]", i );
2293 p_sys->track[i]->idx = p_idx_idx1[i];
2294 avi_index_Clean( &p_idx_indx[i] );
2295 }
2296 }
2297 p_sys->i_movi_lastchunk_pos = __MAX( i_indx_last_pos, i_idx1_last_pos );
2298
2299 for( unsigned i = 0; i < p_sys->i_track; i++ )
2300 {
2301 avi_index_t *p_index = &p_sys->track[i]->idx;
2302
2303 /* Fix key flag */
2304 bool b_key = false;
2305 for( unsigned j = 0; !b_key && j < p_index->i_size; j++ )
2306 b_key = p_index->p_entry[j].i_flags & AVIIF_KEYFRAME;
2307 if( !b_key )
2308 {
2309 msg_Err( p_demux, "no key frame set for track %u", i );
2310 for( unsigned j = 0; j < p_index->i_size; j++ )
2311 p_index->p_entry[j].i_flags |= AVIIF_KEYFRAME;
2312 }
2313
2314 /* */
2315 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2316 i, p_index->i_size );
2317 }
2318 }
2319
2320 static void AVI_IndexCreate( demux_t *p_demux )
2321 {
2322 demux_sys_t *p_sys = p_demux->p_sys;
2323
2324 avi_chunk_list_t *p_riff;
2325 avi_chunk_list_t *p_movi;
2326
2327 unsigned int i_stream;
2328 off_t i_movi_end;
2329
2330 mtime_t i_dialog_update;
2331 dialog_progress_bar_t *p_dialog = NULL;
2332
2333 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2334 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2335
2336 if( !p_movi )
2337 {
2338 msg_Err( p_demux, "cannot find p_movi" );
2339 return;
2340 }
2341
2342 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2343 avi_index_Init( &p_sys->track[i_stream]->idx );
2344
2345 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2346 stream_Size( p_demux->s ) );
2347
2348 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2349 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2350
2351
2352 /* Only show dialog if AVI is > 10MB */
2353 i_dialog_update = mdate();
2354 if( stream_Size( p_demux->s ) > 10000000 )
2355 p_dialog = dialog_ProgressCreate( p_demux, _("Fixing AVI Index..."),
2356 NULL, _("Cancel") );
2357
2358 for( ;; )
2359 {
2360 avi_packet_t pk;
2361
2362 if( !vlc_object_alive (p_demux) )
2363 break;
2364
2365 /* Don't update/check dialog too often */
2366 if( p_dialog && mdate() - i_dialog_update > 100000 )
2367 {
2368 if( dialog_ProgressCancelled( p_dialog ) )
2369 break;
2370
2371 double f_current = stream_Tell( p_demux->s );
2372 double f_size = stream_Size( p_demux->s );
2373 double f_pos = f_current / f_size;
2374 dialog_ProgressSet( p_dialog, NULL, f_pos );
2375
2376 i_dialog_update = mdate();
2377 }
2378
2379 if( AVI_PacketGetHeader( p_demux, &pk ) )
2380 break;
2381
2382 if( pk.i_stream < p_sys->i_track &&
2383 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2384 {
2385 avi_track_t *tk = p_sys->track[pk.i_stream];
2386
2387 avi_entry_t index;
2388 index.i_id = pk.i_fourcc;
2389 index.i_flags = AVI_GetKeyFlag(tk->i_codec, pk.i_peek);
2390 index.i_pos = pk.i_pos;
2391 index.i_length = pk.i_size;
2392 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
2393 }
2394 else
2395 {
2396 switch( pk.i_fourcc )
2397 {
2398 case AVIFOURCC_idx1:
2399 if( p_sys->b_odml )
2400 {
2401 avi_chunk_list_t *p_sysx;
2402 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2403 AVIFOURCC_RIFF, 1 );
2404
2405 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2406 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2407 goto print_stat;
2408 break;
2409 }
2410 goto print_stat;
2411
2412 case AVIFOURCC_RIFF:
2413 msg_Dbg( p_demux, "new RIFF chunk found" );
2414 break;
2415
2416 case AVIFOURCC_rec:
2417 case AVIFOURCC_JUNK:
2418 break;
2419
2420 default:
2421 msg_Warn( p_demux, "need resync, probably broken avi" );
2422 if( AVI_PacketSearch( p_demux ) )
2423 {
2424 msg_Warn( p_demux, "lost sync, abord index creation" );
2425 goto print_stat;
2426 }
2427 }
2428 }
2429
2430 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2431 AVI_PacketNext( p_demux ) )
2432 {
2433 break;
2434 }
2435 }
2436
2437 print_stat:
2438 if( p_dialog != NULL )
2439 dialog_ProgressDestroy( p_dialog );
2440
2441 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2442 {
2443 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2444 i_stream, p_sys->track[i_stream]->idx.i_size );
2445 }
2446 }
2447
2448 /* */
2449 static void AVI_MetaLoad( demux_t *p_demux,
2450 avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih )
2451 {
2452 demux_sys_t *p_sys = p_demux->p_sys;
2453
2454 vlc_meta_t *p_meta = p_sys->meta = vlc_meta_New();
2455 if( !p_meta )
2456 return;
2457
2458 char buffer[200];
2459 snprintf( buffer, sizeof(buffer), "%s%s%s%s",
2460 p_avih->i_flags&AVIF_HASINDEX ? " HAS_INDEX" : "",
2461 p_avih->i_flags&AVIF_MUSTUSEINDEX ? " MUST_USE_INDEX" : "",
2462 p_avih->i_flags&AVIF_ISINTERLEAVED ? " IS_INTERLEAVED" : "",
2463 p_avih->i_flags&AVIF_TRUSTCKTYPE ? " TRUST_CKTYPE" : "" );
2464 vlc_meta_SetSetting( p_meta, buffer );
2465
2466 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0 );
2467 if( !p_info )
2468 return;
2469
2470 static const struct {
2471 vlc_fourcc_t i_id;
2472 int i_type;
2473 } p_dsc[] = {
2474 { AVIFOURCC_IART, vlc_meta_Artist },
2475 { AVIFOURCC_ICMT, vlc_meta_Description },
2476 { AVIFOURCC_ICOP, vlc_meta_Copyright },
2477 { AVIFOURCC_IGNR, vlc_meta_Genre },
2478 { AVIFOURCC_INAM, vlc_meta_Title },
2479 { 0, -1 }
2480 };
2481 for( int i = 0; p_dsc[i].i_id != 0; i++ )
2482 {
2483 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_dsc[i].i_id, 0 );
2484 if( !p_strz )
2485 continue;
2486 char *psz_value = FromLatin1( p_strz->p_str );
2487 if( !psz_value )
2488 continue;
2489
2490 if( *psz_value )
2491 vlc_meta_Set( p_meta, p_dsc[i].i_type, psz_value );
2492 free( psz_value );
2493 }
2494 }
2495
2496 /*****************************************************************************
2497 * Subtitles
2498 *****************************************************************************/
2499 static void AVI_ExtractSubtitle( demux_t *p_demux,
2500 int i_stream,
2501 avi_chunk_list_t *p_strl,
2502 avi_chunk_STRING_t *p_strn )
2503 {
2504 demux_sys_t *p_sys = p_demux->p_sys;
2505 block_t *p_block = NULL;
2506 input_attachment_t *p_attachment = NULL;
2507 char *psz_description = NULL;
2508 avi_chunk_indx_t *p_indx = NULL;
2509
2510 if( !p_sys->b_seekable )
2511 goto exit;
2512
2513 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2514 avi_chunk_t ck;
2515 int64_t i_position;
2516 unsigned i_size;
2517 if( p_indx )
2518 {
2519 if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES &&
2520 p_indx->i_entriesinuse > 0 )
2521 {
2522 if( stream_Seek( p_demux->s, p_indx->idx.super[0].i_offset )||
2523 AVI_ChunkRead( p_demux->s, &ck, NULL ) )
2524 goto exit;
2525 p_indx = &ck.indx;
2526 }
2527
2528 if( p_indx->i_indextype != AVI_INDEX_OF_CHUNKS ||
2529 p_indx->i_entriesinuse != 1 ||
2530 p_indx->i_indexsubtype != 0 )
2531 goto exit;
2532
2533 i_position = p_indx->i_baseoffset +
2534 p_indx->idx.std[0].i_offset - 8;
2535 i_size = (p_indx->idx.std[0].i_size & 0x7fffffff) + 8;
2536 }
2537 else
2538 {
2539 avi_chunk_idx1_t *p_idx1;
2540 uint64_t i_offset;
2541
2542 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2543 goto exit;
2544
2545 i_size = 0;
2546 for( unsigned i = 0; i < p_idx1->i_entry_count; i++ )
2547 {
2548 const idx1_entry_t *e = &p_idx1->entry[i];
2549 unsigned i_cat;
2550 unsigned i_stream_idx;
2551
2552 AVI_ParseStreamHeader( e->i_fourcc, &i_stream_idx, &i_cat );
2553 if( i_cat == SPU_ES && i_stream_idx == i_stream )
2554 {
2555 i_position = e->i_pos + i_offset;
2556 i_size = e->i_length + 8;
2557 break;
2558 }
2559 }
2560 if( i_size <= 0 )
2561 goto exit;
2562 }
2563
2564 /* */
2565 if( i_size > 1000000 )
2566 goto exit;
2567
2568 if( stream_Seek( p_demux->s, i_position ) )
2569 goto exit;
2570 p_block = stream_Block( p_demux->s, i_size );
2571 if( !p_block )
2572 goto exit;
2573
2574 /* Parse packet header */
2575 const uint8_t *p = p_block->p_buffer;
2576 if( i_size < 8 || p[2] != 't' || p[3] != 'x' )
2577 goto exit;
2578 p += 8;
2579 i_size -= 8;
2580
2581 /* Parse subtitle chunk header */
2582 if( i_size < 11 || memcmp( p, "GAB2", 4 ) ||
2583 p[4] != 0x00 || GetWLE( &p[5] ) != 0x2 )
2584 goto exit;
2585 const unsigned i_name = GetDWLE( &p[7] );
2586 if( 11 + i_size <= i_name )
2587 goto exit;
2588 if( i_name > 0 )
2589 psz_description = FromCharset( "UTF-16LE", &p[11], i_name );
2590 p += 11 + i_name;
2591 i_size -= 11 + i_name;
2592 if( i_size < 6 || GetWLE( &p[0] ) != 0x04 )
2593 goto exit;
2594 const unsigned i_payload = GetDWLE( &p[2] );
2595 if( i_size < 6 + i_payload || i_payload <= 0 )
2596 goto exit;
2597 p += 6;
2598 i_size -= 6;
2599
2600 if( !psz_description )
2601 psz_description = p_strn ? FromLatin1( p_strn->p_str ) : NULL;
2602 char *psz_name;
2603 if( asprintf( &psz_name, "subtitle%d.srt", p_sys->i_attachment ) <= 0 )
2604 psz_name = NULL;
2605 p_attachment = vlc_input_attachment_New( psz_name,
2606 "application/x-srt",
2607 psz_description,
2608 p, i_payload );
2609 if( p_attachment )
2610 TAB_APPEND( p_sys->i_attachment, p_sys->attachment, p_attachment );
2611 free( psz_name );
2612
2613 exit:
2614 free( psz_description );
2615
2616 if( p_block )
2617 block_Release( p_block );
2618
2619 if( p_attachment )
2620 msg_Dbg( p_demux, "Loaded an embed subtitle" );
2621 else
2622 msg_Warn( p_demux, "Failed to load an embed subtitle" );
2623
2624 if( p_indx == &ck.indx )
2625 AVI_ChunkFree( p_demux->s, &ck );
2626 }
2627 /*****************************************************************************
2628 * Stream management
2629 *****************************************************************************/
2630 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2631 {
2632 demux_sys_t *p_sys = p_demux->p_sys;
2633 unsigned int i;
2634 int b_end = true;
2635
2636 for( i = 0; i < p_sys->i_track; i++ )
2637 {
2638 avi_track_t *tk = p_sys->track[i];
2639 if( tk->i_idxposc >= tk->idx.i_size )
2640 {
2641 tk->b_eof = true;
2642 }
2643 else
2644 {
2645 b_end = false;
2646 }
2647 }
2648 return( b_end );
2649 }
2650
2651 /****************************************************************************
2652 * AVI_MovieGetLength give max streams length in second
2653 ****************************************************************************/
2654 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2655 {
2656 demux_sys_t *p_sys = p_demux->p_sys;
2657 mtime_t i_maxlength = 0;
2658 unsigned int i;
2659
2660 for( i = 0; i < p_sys->i_track; i++ )
2661 {
2662 avi_track_t *tk = p_sys->track[i];
2663 mtime_t i_length;
2664
2665 /* fix length for each stream */
2666 if( tk->idx.i_size < 1 || !tk->idx.p_entry )
2667 {
2668 continue;
2669 }
2670
2671 if( tk->i_samplesize )
2672 {
2673 i_length = AVI_GetDPTS( tk,
2674 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal +
2675 tk->idx.p_entry[tk->idx.i_size-1].i_length );
2676 }
2677 else
2678 {
2679 i_length = AVI_GetDPTS( tk, tk->idx.i_size );
2680 }
2681 i_length /= (mtime_t)1000000; /* in seconds */
2682
2683 msg_Dbg( p_demux,
2684 "stream[%d] length:%"PRId64" (based on index)",
2685 i,
2686 i_length );
2687 i_maxlength = __MAX( i_maxlength, i_length );
2688 }
2689
2690 return i_maxlength;
2691 }