?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
demux: avi: fix seekability
[vlc.git] / modules / demux / avi / avi.c
blob7bfbd3367bdebaf04ceb54a03d4b35c7be026910
1 /*****************************************************************************
2 * avi.c : AVI file Stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2009 VLC authors and VideoLAN
5 * $Id$
6 *
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
23
24 /*****************************************************************************
25 * Preamble
26 *****************************************************************************/
27
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31 #include <assert.h>
32 #include <ctype.h>
33 #include <limits.h>
34
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_demux.h>
38 #include <vlc_input.h>
39
40 #include <vlc_dialog.h>
41
42 #include <vlc_meta.h>
43 #include <vlc_codecs.h>
44 #include <vlc_charset.h>
45 #include <vlc_memory.h>
46
47 #include "libavi.h"
48 #include "../rawdv.h"
49
50 /*****************************************************************************
51 * Module descriptor
52 *****************************************************************************/
53
54 #define INTERLEAVE_TEXT N_("Force interleaved method" )
55
56 #define INDEX_TEXT N_("Force index creation")
57 #define INDEX_LONGTEXT N_( \
58 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
59 "or incomplete (not seekable)." )
60
61 static int Open ( vlc_object_t * );
62 static void Close( vlc_object_t * );
63
64 static const int pi_index[] = {0,1,2,3};
65
66 static const char *const ppsz_indexes[] = { N_("Ask for action"),
67 N_("Always fix"),
68 N_("Never fix"),
69 N_("Fix when necessary")};
70
71 vlc_module_begin ()
72 set_shortname( "AVI" )
73 set_description( N_("AVI demuxer") )
74 set_capability( "demux", 212 )
75 set_category( CAT_INPUT )
76 set_subcategory( SUBCAT_INPUT_DEMUX )
77
78 add_bool( "avi-interleaved", false,
79 INTERLEAVE_TEXT, INTERLEAVE_TEXT, true )
80 add_integer( "avi-index", 0,
81 INDEX_TEXT, INDEX_LONGTEXT, false )
82 change_integer_list( pi_index, ppsz_indexes )
83
84 set_callbacks( Open, Close )
85 vlc_module_end ()
86
87 /*****************************************************************************
88 * Local prototypes
89 *****************************************************************************/
90 static int Control ( demux_t *, int, va_list );
91 static int Seek ( demux_t *, mtime_t, int, bool );
92 static int Demux_Seekable ( demux_t * );
93 static int Demux_UnSeekable( demux_t * );
94
95 static char *FromACP( const char *str )
96 {
97 return FromCharset(vlc_pgettext("GetACP", "CP1252"), str, strlen(str));
98 }
99
100 #define IGNORE_ES DATA_ES
101 #define READ_LENGTH (25 * 1000) // 25ms
102 #define READ_LENGTH_NONINTERLEAVED (CLOCK_FREQ * 3 / 2)
103
104 //#define AVI_DEBUG
105
106 typedef struct
107 {
108 vlc_fourcc_t i_fourcc;
109 uint32_t i_pos;
110 uint32_t i_size;
111 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
112
113 uint8_t i_peek[8]; /* first 8 bytes */
114
115 unsigned int i_stream;
116 enum es_format_category_e i_cat;
117 } avi_packet_t;
118
119
120 typedef struct
121 {
122 vlc_fourcc_t i_id;
123 uint32_t i_flags;
124 uint32_t i_pos;
125 uint32_t i_length;
126 int64_t i_lengthtotal;
127
128 } avi_entry_t;
129
130 typedef struct
131 {
132 uint32_t i_size;
133 uint32_t i_max;
134 avi_entry_t *p_entry;
135
136 } avi_index_t;
137 static void avi_index_Init( avi_index_t * );
138 static void avi_index_Clean( avi_index_t * );
139 static void avi_index_Append( avi_index_t *, uint32_t *, avi_entry_t * );
140
141 typedef struct
142 {
143 bool b_activated;
144 bool b_eof;
145
146 unsigned int i_rate;
147 unsigned int i_scale;
148 unsigned int i_samplesize;
149
150 unsigned int i_width_bytes;
151 bool b_flipped;
152
153 es_format_t fmt;
154 es_out_id_t *p_es;
155 int i_next_block_flags;
156
157 int i_dv_audio_rate;
158 es_out_id_t *p_es_dv_audio;
159
160 /* Avi Index */
161 avi_index_t idx;
162
163 unsigned int i_idxposc; /* numero of chunk */
164 unsigned int i_idxposb; /* byte in the current chunk */
165
166 /* For VBR audio only */
167 unsigned int i_blockno;
168 unsigned int i_blocksize;
169
170 } avi_track_t;
171
172 struct demux_sys_t
173 {
174 mtime_t i_time;
175 mtime_t i_length;
176
177 bool b_interleaved;
178 bool b_seekable;
179 bool b_fastseekable;
180 bool b_indexloaded; /* if we read indexes from end of file before starting */
181 mtime_t i_read_increment;
182 uint32_t i_avih_flags;
183 avi_chunk_t ck_root;
184
185 bool b_odml;
186
187 uint32_t i_movi_begin;
188 uint32_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
189
190 /* number of streams and information */
191 unsigned int i_track;
192 avi_track_t **track;
193
194 /* meta */
195 vlc_meta_t *meta;
196
197 unsigned int i_attachment;
198 input_attachment_t **attachment;
199 };
200
201 #define __EVEN(x) (((x) & 1) ? (x) + 1 : (x))
202
203 static int64_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
204 static int64_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
205 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
206 static mtime_t AVI_GetPTS ( avi_track_t * );
207
208
209 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
210 static int AVI_StreamChunkSet ( demux_t *,
211 unsigned int i_stream, unsigned int i_ck );
212 static int AVI_StreamBytesSet ( demux_t *,
213 unsigned int i_stream, uint32_t i_byte );
214
215 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
216 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
217
218 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
219 static int AVI_PacketNext ( demux_t * );
220 static int AVI_PacketSearch ( demux_t * );
221
222 static void AVI_IndexLoad ( demux_t * );
223 static void AVI_IndexCreate ( demux_t * );
224
225 static void AVI_ExtractSubtitle( demux_t *, unsigned int i_stream, avi_chunk_list_t *, avi_chunk_STRING_t * );
226
227 static void AVI_DvHandleAudio( demux_t *, avi_track_t *, block_t * );
228
229 static mtime_t AVI_MovieGetLength( demux_t * );
230
231 static void AVI_MetaLoad( demux_t *, avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih );
232
233 /*****************************************************************************
234 * Stream management
235 *****************************************************************************/
236 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
237 static int AVI_TrackStopFinishedStreams( demux_t *);
238
239 /* Remarks:
240 - For VBR mp3 stream:
241 count blocks by rounded-up chunksizes instead of chunks
242 we need full emulation of dshow avi demuxer bugs :(
243 fixes silly nandub-style a-v delaying in avi with vbr mp3...
244 (from mplayer 2002/08/02)
245 - to complete....
246 */
247
248 /*****************************************************************************
249 * Close: frees unused data
250 *****************************************************************************/
251 static void Close ( vlc_object_t * p_this )
252 {
253 demux_t * p_demux = (demux_t *)p_this;
254 demux_sys_t *p_sys = p_demux->p_sys ;
255
256 for( unsigned int i = 0; i < p_sys->i_track; i++ )
257 {
258 if( p_sys->track[i] )
259 {
260 es_format_Clean( &p_sys->track[i]->fmt );
261 avi_index_Clean( &p_sys->track[i]->idx );
262 free( p_sys->track[i] );
263 }
264 }
265 free( p_sys->track );
266
267 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
268 if( p_sys->meta )
269 vlc_meta_Delete( p_sys->meta );
270
271 for( unsigned i = 0; i < p_sys->i_attachment; i++)
272 vlc_input_attachment_Delete(p_sys->attachment[i]);
273 free(p_sys->attachment);
274
275 free( p_sys );
276 }
277
278 /*****************************************************************************
279 * Open: check file and initializes AVI structures
280 *****************************************************************************/
281 static int Open( vlc_object_t * p_this )
282 {
283 demux_t *p_demux = (demux_t *)p_this;
284 demux_sys_t *p_sys;
285
286 bool b_index = false, b_aborted = false;
287 int i_do_index;
288
289 avi_chunk_list_t *p_riff;
290 avi_chunk_list_t *p_hdrl, *p_movi;
291 avi_chunk_avih_t *p_avih;
292
293 unsigned int i_track;
294 unsigned int i_peeker;
295
296 const uint8_t *p_peek;
297
298 /* Is it an avi file ? */
299 if( vlc_stream_Peek( p_demux->s, &p_peek, 200 ) < 200 )
300 return VLC_EGENERIC;
301
302 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
303 {
304 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
305 break;
306 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
307 break;
308 p_peek++;
309 }
310 if( i_peeker == 188 )
311 {
312 return VLC_EGENERIC;
313 }
314
315 if( i_peeker > 0
316 && vlc_stream_Read( p_demux->s, NULL, i_peeker ) < i_peeker )
317 return VLC_EGENERIC;
318
319 /* Initialize input structures. */
320 p_sys = p_demux->p_sys = calloc( 1, sizeof(demux_sys_t) );
321 if( unlikely(!p_sys) )
322 return VLC_EGENERIC;
323 p_sys->b_odml = false;
324 p_sys->meta = NULL;
325 TAB_INIT(p_sys->i_track, p_sys->track);
326 TAB_INIT(p_sys->i_attachment, p_sys->attachment);
327
328 vlc_stream_Control( p_demux->s, STREAM_CAN_FASTSEEK,
329 &p_sys->b_fastseekable );
330 vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &p_sys->b_seekable );
331
332 p_sys->b_interleaved = var_InheritBool( p_demux, "avi-interleaved" );
333
334 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
335 {
336 msg_Err( p_demux, "avi module discarded (invalid file)" );
337 free(p_sys);
338 return VLC_EGENERIC;
339 }
340
341 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF, true ) > 1 )
342 {
343 unsigned int i_count =
344 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF, true );
345
346 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
347 for( unsigned i = 1; i < i_count; i++ )
348 {
349 avi_chunk_list_t *p_sysx;
350
351 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i, true );
352 if( p_sysx && p_sysx->i_type == AVIFOURCC_AVIX )
353 {
354 msg_Warn( p_demux, "detected OpenDML file" );
355 p_sys->b_odml = true;
356 break;
357 }
358 }
359 }
360
361 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
362 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0, true );
363 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
364 if( !p_movi )
365 p_movi = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_movi, 0, true );
366
367 if( !p_hdrl || !p_movi )
368 {
369 msg_Err( p_demux, "invalid file: cannot find hdrl or movi chunks" );
370 goto error;
371 }
372
373 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0, false ) ) )
374 {
375 msg_Err( p_demux, "invalid file: cannot find avih chunk" );
376 goto error;
377 }
378 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl, true );
379 if( p_avih->i_streams != i_track )
380 {
381 msg_Warn( p_demux,
382 "found %d stream but %d are declared",
383 i_track, p_avih->i_streams );
384 }
385 if( i_track == 0 )
386 {
387 msg_Err( p_demux, "no stream defined!" );
388 goto error;
389 }
390
391 /* print information on streams */
392 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
393 i_track,
394 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
395 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
396 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
397 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
398
399 p_sys->b_interleaved |= (p_avih->i_flags & AVIF_ISINTERLEAVED);
400
401 /* Set callbacks */
402 p_demux->pf_control = Control;
403
404 if( p_sys->b_fastseekable )
405 {
406 p_demux->pf_demux = Demux_Seekable;
407 p_sys->i_read_increment = READ_LENGTH;
408 }
409 else if( p_sys->b_seekable )
410 {
411 p_demux->pf_demux = Demux_Seekable;
412 p_sys->i_read_increment = READ_LENGTH_NONINTERLEAVED;
413 if( !p_sys->b_interleaved )
414 msg_Warn( p_demux, "Non interleaved content over slow seekable, "
415 "expect bad performance" );
416 }
417 else
418 {
419 msg_Warn( p_demux, "Non seekable content " );
420
421 p_demux->pf_demux = Demux_UnSeekable;
422 p_sys->i_read_increment = READ_LENGTH_NONINTERLEAVED;
423 /* non seekable and non interleaved case ? well... */
424 if( !p_sys->b_interleaved )
425 {
426 msg_Warn( p_demux, "Non seekable non interleaved content, "
427 "disabling other tracks" );
428 i_track = __MIN(i_track, 1);
429 }
430 }
431
432 AVI_MetaLoad( p_demux, p_riff, p_avih );
433 p_sys->i_avih_flags = p_avih->i_flags;
434
435 /* now read info on each stream and create ES */
436 for( unsigned i = 0 ; i < i_track; i++ )
437 {
438 avi_track_t *tk = calloc( 1, sizeof( avi_track_t ) );
439 if( unlikely( !tk ) )
440 goto error;
441
442 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i, true );
443 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0, false );
444 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0, false );
445 avi_chunk_strf_auds_t *p_auds = NULL;
446 avi_chunk_strf_vids_t *p_vids = NULL;
447
448 tk->b_eof = false;
449 tk->b_activated = true;
450
451 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0, false );
452 p_auds = (avi_chunk_strf_auds_t*)p_vids;
453
454 if( p_strl == NULL || p_strh == NULL || p_vids == NULL )
455 {
456 msg_Warn( p_demux, "stream[%d] incomplete", i );
457 free( tk );
458 continue;
459 }
460
461 tk->i_rate = p_strh->i_rate;
462 tk->i_scale = p_strh->i_scale;
463 tk->i_samplesize = p_strh->i_samplesize;
464 msg_Dbg( p_demux, "stream[%u] rate:%u scale:%u samplesize:%u",
465 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
466 if( tk->i_scale > tk->i_rate )
467 {
468 free( tk );
469 continue;
470 }
471
472 switch( p_strh->i_type )
473 {
474 case( AVIFOURCC_auds ):
475 {
476 es_format_Init( &tk->fmt, AUDIO_ES, 0 );
477
478 if( p_auds->p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
479 p_auds->p_wf->cbSize >= sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX) )
480 {
481 WAVEFORMATEXTENSIBLE *p_wfe = (WAVEFORMATEXTENSIBLE *)p_auds->p_wf;
482 tk->fmt.i_codec = AVI_FourccGetCodec( AUDIO_ES, p_wfe->SubFormat.Data1 );
483 }
484 else
485 tk->fmt.i_codec = AVI_FourccGetCodec( AUDIO_ES, p_auds->p_wf->wFormatTag );
486
487 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
488 if( tk->i_blocksize == 0 )
489 {
490 if( p_auds->p_wf->wFormatTag == 1 )
491 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
492 else
493 tk->i_blocksize = 1;
494 }
495 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
496 {
497 msg_Warn( p_demux, "track[%u] samplesize=%u and blocksize=%u are not equal."
498 "Using blocksize as a workaround.",
499 i, tk->i_samplesize, tk->i_blocksize );
500 tk->i_samplesize = tk->i_blocksize;
501 }
502
503 if( tk->fmt.i_codec == VLC_CODEC_VORBIS )
504 {
505 tk->i_blocksize = 0; /* fix vorbis VBR decoding */
506 }
507
508 if ( tk->fmt.i_codec == VLC_CODEC_MP4A )
509 {
510 tk->i_samplesize = 0; /* ADTS/AAC VBR */
511 }
512
513 /* Fix broken scale/rate */
514 if ( tk->fmt.i_codec == VLC_CODEC_ADPCM_IMA_WAV &&
515 tk->i_samplesize && tk->i_samplesize > tk->i_rate )
516 {
517 tk->i_scale = 1017;
518 tk->i_rate = p_auds->p_wf->nSamplesPerSec;
519 }
520
521 /* From libavformat */
522 /* Fix broken sample size (which is mp2 num samples / frame) #12722 */
523 if( tk->fmt.i_codec == VLC_CODEC_MPGA &&
524 tk->i_samplesize == 1152 && p_auds->p_wf->nBlockAlign == 1152 )
525 {
526 p_auds->p_wf->nBlockAlign = tk->i_samplesize = 0;
527 }
528
529 tk->fmt.audio.i_channels = p_auds->p_wf->nChannels;
530 tk->fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
531 tk->fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
532 tk->fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
533 tk->fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
534 tk->fmt.b_packetized = !tk->i_blocksize;
535
536 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0, true );
537 if( p_info )
538 {
539 int i_chunk = AVIFOURCC_IAS1 + ((i - 1) << 24);
540 avi_chunk_STRING_t *p_lang = AVI_ChunkFind( p_info, i_chunk, 0, false );
541 if( p_lang != NULL && p_lang->p_str != NULL )
542 tk->fmt.psz_language = FromACP( p_lang->p_str );
543 }
544
545 msg_Dbg( p_demux,
546 "stream[%u] audio(0x%x - %s) %d channels %dHz %dbits",
547 i, p_auds->p_wf->wFormatTag,
548 vlc_fourcc_GetDescription(AUDIO_ES, tk->fmt.i_codec),
549 p_auds->p_wf->nChannels,
550 p_auds->p_wf->nSamplesPerSec,
551 p_auds->p_wf->wBitsPerSample );
552
553 const size_t i_cboff = sizeof(WAVEFORMATEX);
554 const size_t i_incboff = ( p_auds->p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE ) ?
555 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX): 0;
556 if( p_auds->i_chunk_size >= i_cboff + p_auds->p_wf->cbSize &&
557 p_auds->p_wf->cbSize > i_incboff )
558 {
559 int i_extra = p_auds->p_wf->cbSize - i_incboff;
560 tk->fmt.p_extra = malloc( i_extra );
561 if( unlikely(tk->fmt.p_extra == NULL) )
562 {
563 es_format_Clean( &tk->fmt );
564 free( tk );
565 goto error;
566 }
567 tk->fmt.i_extra = i_extra;
568 memcpy( tk->fmt.p_extra, ((uint8_t *)(&p_auds->p_wf[1])) + i_incboff, i_extra );
569 }
570 break;
571 }
572
573 case( AVIFOURCC_vids ):
574 {
575 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
576 {
577 msg_Dbg( p_demux, "stream[%u] subtitles", i );
578 es_format_Init( &tk->fmt, SPU_ES, p_vids->p_bih->biCompression );
579 break;
580 }
581
582 es_format_Init( &tk->fmt, VIDEO_ES,
583 AVI_FourccGetCodec( VIDEO_ES, p_vids->p_bih->biCompression ) );
584
585 if( p_vids->p_bih->biCompression == BI_RGB )
586 {
587 switch( p_vids->p_bih->biBitCount )
588 {
589 case 32:
590 tk->fmt.i_codec = VLC_CODEC_RGB32;
591 break;
592 case 24:
593 tk->fmt.i_codec = VLC_CODEC_RGB24;
594 break;
595 case 16: /* Yes it is RV15 */
596 case 15:
597 tk->fmt.i_codec = VLC_CODEC_RGB15;
598 break;
599 case 9: /* <- TODO check that */
600 tk->fmt.i_codec = VLC_CODEC_I410;
601 break;
602 case 8:
603 if ( p_vids->p_bih->biClrUsed )
604 tk->fmt.i_codec = VLC_CODEC_RGBP;
605 else
606 tk->fmt.i_codec = VLC_CODEC_GREY;
607 break;
608 }
609
610 switch( tk->fmt.i_codec )
611 {
612 case VLC_CODEC_RGB24:
613 case VLC_CODEC_RGB32: /* BGR (see biBitCount) */
614 tk->fmt.video.i_bmask = 0x00ff0000;
615 tk->fmt.video.i_gmask = 0x0000ff00;
616 tk->fmt.video.i_rmask = 0x000000ff;
617 break;
618 case VLC_CODEC_RGB15: /* RGB (B least 5 bits) */
619 tk->fmt.video.i_rmask = 0x7c00;
620 tk->fmt.video.i_gmask = 0x03e0;
621 tk->fmt.video.i_bmask = 0x001f;
622 break;
623 case VLC_CODEC_RGBP:
624 {
625 const VLC_BITMAPINFO *p_bi = (const VLC_BITMAPINFO *) p_vids->p_bih;
626 tk->fmt.video.p_palette = malloc( sizeof(video_palette_t) );
627 if ( tk->fmt.video.p_palette )
628 {
629 uint32_t entry;
630 for( uint32_t j = 0; j < p_vids->p_bih->biClrUsed; j++ )
631 {
632 entry = GetDWBE( &p_bi->bmiColors[j] );
633 tk->fmt.video.p_palette->palette[j][0] = entry >> 24;
634 tk->fmt.video.p_palette->palette[j][1] = (entry >> 16) & 0xFF;
635 tk->fmt.video.p_palette->palette[j][2] = (entry >> 8) & 0xFF;
636 tk->fmt.video.p_palette->palette[j][3] = entry & 0xFF;
637 }
638 tk->fmt.video.p_palette->i_entries = p_vids->p_bih->biClrUsed;
639 }
640 }
641 break;
642 default:
643 break;
644 }
645
646 tk->i_width_bytes = p_vids->p_bih->biWidth * (p_vids->p_bih->biBitCount >> 3);
647 /* RGB DIB are coded from bottom to top */
648 if ( p_vids->p_bih->biHeight < INT32_MAX ) tk->b_flipped = true;
649 }
650 else
651 {
652 tk->fmt.i_codec = p_vids->p_bih->biCompression;
653 if( tk->fmt.i_codec == VLC_CODEC_MP4V &&
654 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
655 {
656 tk->fmt.i_codec =
657 tk->fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
658 }
659 }
660 tk->i_samplesize = 0;
661
662 tk->fmt.video.i_visible_width =
663 tk->fmt.video.i_width = p_vids->p_bih->biWidth;
664 tk->fmt.video.i_visible_height =
665 tk->fmt.video.i_height = p_vids->p_bih->biHeight;
666 tk->fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
667 tk->fmt.video.i_frame_rate = tk->i_rate;
668 tk->fmt.video.i_frame_rate_base = tk->i_scale;
669
670 /* Uncompresse Bitmap or YUV, YUV being always topdown */
671 if ( tk->fmt.video.i_height > INT32_MAX )
672 tk->fmt.video.i_height =
673 (unsigned int)(-(int)p_vids->p_bih->biHeight);
674
675 avi_chunk_vprp_t *p_vprp = AVI_ChunkFind( p_strl, AVIFOURCC_vprp, 0, false );
676 if( p_vprp )
677 {
678 uint32_t i_frame_aspect_ratio = p_vprp->i_frame_aspect_ratio;
679 if( p_vprp->i_video_format_token >= 1 &&
680 p_vprp->i_video_format_token <= 4 )
681 i_frame_aspect_ratio = 0x00040003;
682 tk->fmt.video.i_sar_num = ((i_frame_aspect_ratio >> 16) & 0xffff) *
683 tk->fmt.video.i_height;
684 tk->fmt.video.i_sar_den = ((i_frame_aspect_ratio >> 0) & 0xffff) *
685 tk->fmt.video.i_width;
686 }
687 /* Extradata is the remainder of the chunk less the BIH */
688 if( p_vids->i_chunk_size <= INT_MAX - sizeof(VLC_BITMAPINFOHEADER) )
689 {
690 int i_extra = p_vids->i_chunk_size - sizeof(VLC_BITMAPINFOHEADER);
691 if( i_extra > 0 )
692 {
693 tk->fmt.p_extra = malloc( i_extra );
694 if( unlikely(tk->fmt.p_extra == NULL) )
695 {
696 es_format_Clean( &tk->fmt );
697 free( tk );
698 goto error;
699 }
700 tk->fmt.i_extra = i_extra;
701 memcpy( tk->fmt.p_extra, &p_vids->p_bih[1], tk->fmt.i_extra );
702 }
703 }
704
705 msg_Dbg( p_demux, "stream[%u] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
706 i, (char*)&p_vids->p_bih->biCompression,
707 (uint32_t)p_vids->p_bih->biWidth,
708 (uint32_t)p_vids->p_bih->biHeight,
709 p_vids->p_bih->biBitCount,
710 (float)tk->i_rate/(float)tk->i_scale );
711
712 /* Extract palette from extradata if bpp <= 8 */
713 if( tk->fmt.video.i_bits_per_pixel > 0 && tk->fmt.video.i_bits_per_pixel <= 8 )
714 {
715 /* The palette should not be included in biSize, but come
716 * directly after BITMAPINFORHEADER in the BITMAPINFO structure */
717 if( tk->fmt.i_extra > 0 )
718 {
719 free( tk->fmt.video.p_palette );
720 tk->fmt.video.p_palette = calloc( 1, sizeof(video_palette_t) );
721 if( likely(tk->fmt.video.p_palette) )
722 {
723 const uint8_t *p_pal = tk->fmt.p_extra;
724 tk->fmt.video.p_palette->i_entries = __MIN(tk->fmt.i_extra/4, 256);
725 for( int k = 0; k < tk->fmt.video.p_palette->i_entries; k++ )
726 {
727 for( int j = 0; j < 4; j++ )
728 tk->fmt.video.p_palette->palette[k][j] = p_pal[4*k+j];
729 }
730 }
731 }
732 }
733 break;
734 }
735
736 case( AVIFOURCC_txts):
737 msg_Dbg( p_demux, "stream[%u] subtitle attachment", i );
738 AVI_ExtractSubtitle( p_demux, i, p_strl, p_strn );
739 free( tk );
740 continue;
741
742 case( AVIFOURCC_iavs):
743 case( AVIFOURCC_ivas):
744 msg_Dbg( p_demux, "stream[%u] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
745 es_format_Init( &tk->fmt, VIDEO_ES, p_strh->i_handler );
746 tk->i_samplesize = 0;
747 tk->i_dv_audio_rate = p_strh->i_handler == VLC_CODEC_DV ? -1 : 0;
748
749 tk->fmt.video.i_visible_width =
750 tk->fmt.video.i_width = p_avih->i_width;
751 tk->fmt.video.i_visible_height =
752 tk->fmt.video.i_height = p_avih->i_height;
753 break;
754
755 case( AVIFOURCC_mids):
756 msg_Dbg( p_demux, "stream[%u] midi is UNSUPPORTED", i );
757 /* fall through */
758
759 default:
760 msg_Warn( p_demux, "stream[%u] unknown type %4.4s", i, (char *)&p_strh->i_type );
761 free( tk );
762 continue;
763 }
764 if( p_strn && p_strn->p_str )
765 tk->fmt.psz_description = FromACP( p_strn->p_str );
766 tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
767 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
768 }
769
770 if( p_sys->i_track <= 0 )
771 {
772 msg_Err( p_demux, "no valid track" );
773 goto error;
774 }
775
776 i_do_index = var_InheritInteger( p_demux, "avi-index" );
777 if( i_do_index == 1 ) /* Always fix */
778 {
779 aviindex:
780 if( p_sys->b_fastseekable )
781 {
782 AVI_IndexCreate( p_demux );
783 }
784 else if( p_sys->b_seekable )
785 {
786 AVI_IndexLoad( p_demux );
787 }
788 else
789 {
790 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
791 }
792 }
793 else if( p_sys->b_seekable )
794 {
795 AVI_IndexLoad( p_demux );
796 }
797
798 /* *** movie length in sec *** */
799 p_sys->i_length = AVI_MovieGetLength( p_demux );
800
801 /* Check the index completeness */
802 unsigned int i_idx_totalframes = 0;
803 for( unsigned int i = 0; i < p_sys->i_track; i++ )
804 {
805 const avi_track_t *tk = p_sys->track[i];
806 if( tk->fmt.i_cat == VIDEO_ES && tk->idx.p_entry )
807 i_idx_totalframes = __MAX(i_idx_totalframes, tk->idx.i_size);
808 }
809 if( i_idx_totalframes != p_avih->i_totalframes &&
810 p_sys->i_length < (mtime_t)p_avih->i_totalframes *
811 (mtime_t)p_avih->i_microsecperframe /
812 CLOCK_FREQ )
813 {
814 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
815 "approximative or will exhibit strange behavior" );
816 if( (i_do_index == 0 || i_do_index == 3) && !b_index )
817 {
818 if( !p_sys->b_fastseekable ) {
819 b_index = true;
820 goto aviindex;
821 }
822 if( i_do_index == 0 )
823 {
824 const char *psz_msg = _(
825 "Because this file index is broken or missing, "
826 "seeking will not work correctly.\n"
827 "VLC won't repair your file but can temporary fix this "
828 "problem by building an index in memory.\n"
829 "This step might take a long time on a large file.\n"
830 "What do you want to do?");
831 switch( vlc_dialog_wait_question( p_demux,
832 VLC_DIALOG_QUESTION_NORMAL,
833 _("Do not play"),
834 _("Build index then play"),
835 _("Play as is"),
836 _("Broken or missing Index"),
837 "%s", psz_msg ) )
838 {
839 case 0:
840 b_aborted = true;
841 goto error;
842 case 1:
843 b_index = true;
844 msg_Dbg( p_demux, "Fixing AVI index" );
845 goto aviindex;
846 }
847 }
848 else
849 {
850 b_index = true;
851 msg_Dbg( p_demux, "Fixing AVI index" );
852 goto aviindex;
853 }
854 }
855 }
856
857 /* fix some BeOS MediaKit generated file */
858 for( unsigned i = 0 ; i < p_sys->i_track; i++ )
859 {
860 avi_track_t *tk = p_sys->track[i];
861 avi_chunk_list_t *p_strl;
862 avi_chunk_strf_auds_t *p_auds;
863
864 if( tk->fmt.i_cat != AUDIO_ES )
865 {
866 continue;
867 }
868 if( tk->idx.i_size < 1 ||
869 tk->i_scale != 1 ||
870 tk->i_samplesize != 0 )
871 {
872 continue;
873 }
874 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i, true );
875 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0, false );
876
877 if( p_auds &&
878 p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
879 tk->i_rate == p_auds->p_wf->nSamplesPerSec )
880 {
881 int64_t i_track_length =
882 tk->idx.p_entry[tk->idx.i_size-1].i_length +
883 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal;
884 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
885 (mtime_t)p_avih->i_microsecperframe;
886
887 if( i_length == 0 )
888 {
889 msg_Warn( p_demux, "track[%u] cannot be fixed (BeOS MediaKit generated)", i );
890 continue;
891 }
892 tk->i_samplesize = 1;
893 tk->i_rate = i_track_length * CLOCK_FREQ / i_length;
894 msg_Warn( p_demux, "track[%u] fixed with rate=%u scale=%u (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
895 }
896 }
897
898 if( p_sys->b_seekable )
899 {
900 /* we have read all chunk so go back to movi */
901 if( vlc_stream_Seek( p_demux->s, p_movi->i_chunk_pos ) )
902 goto error;
903 }
904 /* Skip movi header */
905 if( vlc_stream_Read( p_demux->s, NULL, 12 ) < 12 )
906 goto error;
907
908 p_sys->i_movi_begin = p_movi->i_chunk_pos;
909 return VLC_SUCCESS;
910
911 error:
912 Close( p_this );
913 return b_aborted ? VLC_ETIMEOUT : VLC_EGENERIC;
914 }
915
916 /*****************************************************************************
917 * ReadFrame: Reads frame, using stride if necessary
918 *****************************************************************************/
919
920 static block_t * ReadFrame( demux_t *p_demux, const avi_track_t *tk,
921 const unsigned int i_header, const int i_size )
922 {
923 block_t *p_frame = vlc_stream_Block( p_demux->s, __EVEN( i_size ) );
924 if ( !p_frame ) return p_frame;
925
926 if( i_size % 2 ) /* read was padded on word boundary */
927 {
928 p_frame->i_buffer--;
929 }
930
931 if( i_header >= p_frame->i_buffer )
932 {
933 p_frame->i_buffer = 0;
934 return p_frame;
935 }
936
937 /* skip header */
938 p_frame->p_buffer += i_header;
939 p_frame->i_buffer -= i_header;
940
941 const unsigned int i_stride_bytes = ((( (tk->i_width_bytes << 3) + 31) & ~31) >> 3);
942
943 if ( !tk->i_width_bytes || !i_stride_bytes )
944 return p_frame;
945
946 if( p_frame->i_buffer < i_stride_bytes )
947 {
948 p_frame->i_buffer = 0;
949 return p_frame;
950 }
951
952 if( !tk->b_flipped )
953 {
954 const uint8_t *p_src = p_frame->p_buffer + i_stride_bytes;
955 const uint8_t *p_end = p_frame->p_buffer + p_frame->i_buffer;
956 uint8_t *p_dst = p_frame->p_buffer + tk->i_width_bytes;
957
958 p_frame->i_buffer = tk->i_width_bytes;
959
960 while ( p_src + i_stride_bytes <= p_end )
961 {
962 memmove( p_dst, p_src, tk->i_width_bytes );
963 p_src += i_stride_bytes;
964 p_dst += tk->i_width_bytes;
965 p_frame->i_buffer += tk->i_width_bytes;
966 }
967 }
968 else
969 {
970 block_t *p_flippedframe = block_Alloc( p_frame->i_buffer );
971 if ( !p_flippedframe )
972 {
973 block_Release( p_frame );
974 return NULL;
975 }
976
977 unsigned int i_lines = p_frame->i_buffer / i_stride_bytes;
978 const uint8_t *p_src = p_frame->p_buffer + i_lines * i_stride_bytes;
979 uint8_t *p_dst = p_flippedframe->p_buffer;
980
981 p_flippedframe->i_buffer = 0;
982
983 while ( i_lines-- > 0 )
984 {
985 p_src -= i_stride_bytes;
986 memcpy( p_dst, p_src, tk->i_width_bytes );
987 p_dst += tk->i_width_bytes;
988 p_flippedframe->i_buffer += tk->i_width_bytes;
989 }
990
991 block_Release( p_frame );
992 p_frame = p_flippedframe;
993 }
994
995 return p_frame;
996 }
997
998 /*****************************************************************************
999 * Demux_Seekable: reads and demuxes data packets for stream seekable
1000 *****************************************************************************
1001 * AVIDemux: reads and demuxes data packets
1002 *****************************************************************************
1003 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1004 *****************************************************************************/
1005 typedef struct
1006 {
1007 bool b_ok;
1008
1009 int64_t i_toread;
1010
1011 int64_t i_posf; /* where we will read :
1012 if i_idxposb == 0 : begining of chunk (+8 to acces data)
1013 else : point on data directly */
1014 } avi_track_toread_t;
1015
1016 static int Demux_Seekable( demux_t *p_demux )
1017 {
1018 demux_sys_t *p_sys = p_demux->p_sys;
1019
1020 unsigned int i_track_count = 0;
1021 unsigned int i_track;
1022 /* cannot be more than 100 stream (dcXX or wbXX) */
1023 avi_track_toread_t toread[100];
1024
1025
1026 /* detect new selected/unselected streams */
1027 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
1028 {
1029 avi_track_t *tk = p_sys->track[i_track];
1030 bool b = false;
1031
1032 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1033 if( tk->p_es_dv_audio )
1034 {
1035 bool b_extra = false;
1036 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es_dv_audio, &b_extra );
1037 b |= b_extra;
1038 }
1039 if( b && !tk->b_activated )
1040 {
1041 if( p_sys->b_seekable)
1042 {
1043 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
1044 }
1045 tk->b_activated = true;
1046 }
1047 else if( !b && tk->b_activated )
1048 {
1049 tk->b_activated = false;
1050 }
1051 if( b )
1052 {
1053 i_track_count++;
1054 }
1055 }
1056
1057 if( i_track_count <= 0 )
1058 {
1059 int64_t i_length = p_sys->i_length * CLOCK_FREQ;
1060
1061 p_sys->i_time += p_sys->i_read_increment;
1062 if( i_length > 0 )
1063 {
1064 if( p_sys->i_time >= i_length )
1065 return VLC_DEMUXER_EOF;
1066 return VLC_DEMUXER_SUCCESS;
1067 }
1068 msg_Warn( p_demux, "no track selected, exiting..." );
1069 return VLC_DEMUXER_EOF;
1070 }
1071
1072 /* wait for the good time */
1073 es_out_SetPCR( p_demux->out, VLC_TS_0 + p_sys->i_time );
1074 p_sys->i_time += p_sys->i_read_increment;
1075
1076 /* init toread */
1077 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
1078 {
1079 avi_track_t *tk = p_sys->track[i_track];
1080
1081 toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
1082 if( tk->i_idxposc < tk->idx.i_size )
1083 {
1084 toread[i_track].i_posf = tk->idx.p_entry[tk->i_idxposc].i_pos;
1085 if( tk->i_idxposb > 0 )
1086 {
1087 toread[i_track].i_posf += 8 + tk->i_idxposb;
1088 }
1089 }
1090 else
1091 {
1092 toread[i_track].i_posf = -1;
1093 }
1094
1095 mtime_t i_dpts = p_sys->i_time - AVI_GetPTS( tk );
1096
1097 if( tk->i_samplesize )
1098 {
1099 toread[i_track].i_toread = AVI_PTSToByte( tk, i_dpts );
1100 }
1101 else if ( i_dpts > -2 * CLOCK_FREQ ) /* don't send a too early dts (low fps video) */
1102 {
1103 toread[i_track].i_toread = AVI_PTSToChunk( tk, i_dpts );
1104 }
1105 else
1106 toread[i_track].i_toread = -1;
1107 }
1108
1109 for( ;; )
1110 {
1111 avi_track_t *tk;
1112 bool b_done;
1113 block_t *p_frame;
1114 int64_t i_pos;
1115 unsigned int i;
1116 size_t i_size;
1117
1118 /* search for first chunk to be read */
1119 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
1120 {
1121 if( !toread[i].b_ok ||
1122 ( p_sys->b_fastseekable && p_sys->b_interleaved &&
1123 AVI_GetDPTS( p_sys->track[i], toread[i].i_toread ) <= -p_sys->i_read_increment ) )
1124 {
1125 continue;
1126 }
1127
1128 if( toread[i].i_toread >= 0 )
1129 {
1130 b_done = false; /* not yet finished */
1131
1132 if( toread[i].i_posf > 0 )
1133 {
1134 if( i_pos == -1 || i_pos > toread[i].i_posf )
1135 {
1136 i_track = i;
1137 i_pos = toread[i].i_posf;
1138 }
1139 }
1140 }
1141 }
1142
1143 if( b_done )
1144 {
1145 for( i = 0; i < p_sys->i_track; i++ )
1146 {
1147 if( toread[i].b_ok )
1148 return VLC_DEMUXER_SUCCESS;
1149 }
1150 msg_Warn( p_demux, "all tracks have failed, exiting..." );
1151 return VLC_DEMUXER_EOF;
1152 }
1153
1154 if( i_pos == -1 )
1155 {
1156 int i_loop_count = 0;
1157
1158 /* no valid index, we will parse directly the stream
1159 * in case we fail we will disable all finished stream */
1160 if( p_sys->b_seekable && p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1161 {
1162 vlc_stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1163 if( AVI_PacketNext( p_demux ) )
1164 {
1165 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1166 }
1167 }
1168 else
1169 {
1170 vlc_stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1171 }
1172
1173 for( ;; )
1174 {
1175 avi_packet_t avi_pk;
1176
1177 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1178 {
1179 msg_Warn( p_demux,
1180 "cannot get packet header, track disabled" );
1181 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1182 }
1183 if( avi_pk.i_stream >= p_sys->i_track ||
1184 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1185 {
1186 if( AVI_PacketNext( p_demux ) )
1187 {
1188 msg_Warn( p_demux,
1189 "cannot skip packet, track disabled" );
1190 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1191 }
1192
1193 /* Prevents from eating all the CPU with broken files.
1194 * This value should be low enough so that it doesn't
1195 * affect the reading speed too much. */
1196 if( !(++i_loop_count % 1024) )
1197 {
1198 msleep( 10000 );
1199
1200 if( !(i_loop_count % (1024 * 10)) )
1201 msg_Warn( p_demux,
1202 "don't seem to find any data..." );
1203 }
1204 continue;
1205 }
1206 else
1207 {
1208 i_track = avi_pk.i_stream;
1209 tk = p_sys->track[i_track];
1210
1211 /* add this chunk to the index */
1212 avi_entry_t index;
1213 index.i_id = avi_pk.i_fourcc;
1214 index.i_flags = AVI_GetKeyFlag(tk->fmt.i_codec, avi_pk.i_peek);
1215 index.i_pos = avi_pk.i_pos;
1216 index.i_length = avi_pk.i_size;
1217 index.i_lengthtotal = index.i_length;
1218 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1219
1220 /* do we will read this data ? */
1221 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -p_sys->i_read_increment )
1222 {
1223 break;
1224 }
1225 else
1226 {
1227 if( AVI_PacketNext( p_demux ) )
1228 {
1229 msg_Warn( p_demux,
1230 "cannot skip packet, track disabled" );
1231 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1232 }
1233 }
1234 }
1235 }
1236
1237 }
1238 else
1239 {
1240 vlc_stream_Seek( p_demux->s, i_pos );
1241 }
1242
1243 /* Set the track to use */
1244 tk = p_sys->track[i_track];
1245
1246 /* read thoses data */
1247 if( tk->i_samplesize )
1248 {
1249 int64_t i_toread;
1250
1251 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1252 {
1253 if( tk->i_samplesize > 1 )
1254 {
1255 i_toread = tk->i_samplesize;
1256 }
1257 else
1258 {
1259 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1260 i_toread = __MAX( i_toread, 100 );
1261 }
1262 }
1263 i_size = __MIN( tk->idx.p_entry[tk->i_idxposc].i_length -
1264 tk->i_idxposb,
1265 (size_t) i_toread );
1266 }
1267 else
1268 {
1269 i_size = tk->idx.p_entry[tk->i_idxposc].i_length;
1270 }
1271
1272 if( tk->i_idxposb == 0 )
1273 {
1274 i_size += 8; /* need to read and skip header */
1275 }
1276
1277 if( ( p_frame = ReadFrame( p_demux, tk,
1278 ( tk->i_idxposb == 0 ) ? 8 : 0, i_size ) )==NULL )
1279 {
1280 msg_Warn( p_demux, "failed reading data" );
1281 tk->b_eof = false;
1282 toread[i_track].b_ok = false;
1283 continue;
1284 }
1285
1286 p_frame->i_pts = VLC_TS_0 + AVI_GetPTS( tk );
1287 if( tk->idx.p_entry[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1288 {
1289 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1290 }
1291 else
1292 {
1293 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1294 }
1295
1296 /* read data */
1297 if( tk->i_samplesize )
1298 {
1299 if( tk->i_idxposb == 0 )
1300 {
1301 i_size -= 8;
1302 }
1303 toread[i_track].i_toread -= i_size;
1304 tk->i_idxposb += i_size;
1305 if( tk->i_idxposb >=
1306 tk->idx.p_entry[tk->i_idxposc].i_length )
1307 {
1308 tk->i_idxposb = 0;
1309 tk->i_idxposc++;
1310 }
1311 }
1312 else
1313 {
1314 int i_length = tk->idx.p_entry[tk->i_idxposc].i_length;
1315
1316 tk->i_idxposc++;
1317 if( tk->fmt.i_cat == AUDIO_ES )
1318 {
1319 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1320 }
1321 toread[i_track].i_toread--;
1322 }
1323
1324 if( tk->i_idxposc < tk->idx.i_size)
1325 {
1326 toread[i_track].i_posf =
1327 tk->idx.p_entry[tk->i_idxposc].i_pos;
1328 if( tk->i_idxposb > 0 )
1329 {
1330 toread[i_track].i_posf += 8 + tk->i_idxposb;
1331 }
1332
1333 }
1334 else
1335 {
1336 toread[i_track].i_posf = -1;
1337 }
1338
1339 if( tk->fmt.i_cat != VIDEO_ES )
1340 p_frame->i_dts = p_frame->i_pts;
1341 else
1342 {
1343 p_frame->i_dts = p_frame->i_pts;
1344 p_frame->i_pts = VLC_TS_INVALID;
1345 }
1346
1347 if( tk->i_dv_audio_rate )
1348 AVI_DvHandleAudio( p_demux, tk, p_frame );
1349
1350 if( tk->i_next_block_flags )
1351 {
1352 p_frame->i_flags = tk->i_next_block_flags;
1353 tk->i_next_block_flags = 0;
1354 }
1355
1356 if( tk->p_es )
1357 es_out_Send( p_demux->out, tk->p_es, p_frame );
1358 else
1359 block_Release( p_frame );
1360 }
1361 }
1362
1363
1364 /*****************************************************************************
1365 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1366 *****************************************************************************
1367 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1368 *****************************************************************************/
1369 static int Demux_UnSeekable( demux_t *p_demux )
1370 {
1371 demux_sys_t *p_sys = p_demux->p_sys;
1372 avi_track_t *p_stream_master = NULL;
1373 unsigned int i_stream;
1374 unsigned int i_packet;
1375
1376 es_out_SetPCR( p_demux->out, VLC_TS_0 + p_sys->i_time );
1377
1378 /* *** find master stream for data packet skipping algo *** */
1379 /* *** -> first video, if any, or first audio ES *** */
1380 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1381 {
1382 avi_track_t *tk = p_sys->track[i_stream];
1383 bool b;
1384
1385 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1386 if( tk->p_es_dv_audio )
1387 {
1388 bool b_extra;
1389 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es_dv_audio, &b_extra );
1390 b |= b_extra;
1391 }
1392
1393 if( b )
1394 {
1395 if( tk->fmt.i_cat == VIDEO_ES )
1396 {
1397 p_stream_master = tk;
1398 break;
1399 }
1400 else if( !p_stream_master )
1401 {
1402 p_stream_master = tk;
1403 }
1404 }
1405 }
1406
1407 if( !p_stream_master )
1408 {
1409 if( p_sys->i_track )
1410 {
1411 p_stream_master = p_sys->track[0];
1412 }
1413 else
1414 {
1415 msg_Warn( p_demux, "no more stream selected" );
1416 return VLC_DEMUXER_EOF;
1417 }
1418 }
1419
1420 p_sys->i_time = AVI_GetPTS( p_stream_master );
1421
1422 for( i_packet = 0; i_packet < 10; i_packet++)
1423 {
1424 #define p_stream p_sys->track[avi_pk.i_stream]
1425
1426 avi_packet_t avi_pk;
1427
1428 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1429 {
1430 return VLC_DEMUXER_EOF;
1431 }
1432
1433 if( avi_pk.i_stream >= p_sys->i_track ||
1434 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1435 {
1436 /* we haven't found an audio or video packet:
1437 * - we have seek, found first next packet
1438 * - others packets could be found, skip them
1439 */
1440 switch( avi_pk.i_fourcc )
1441 {
1442 case AVIFOURCC_JUNK:
1443 case AVIFOURCC_LIST:
1444 case AVIFOURCC_RIFF:
1445 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1446 case AVIFOURCC_idx1:
1447 if( p_sys->b_odml )
1448 {
1449 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1450 }
1451 return VLC_DEMUXER_EOF;
1452 default:
1453 msg_Warn( p_demux,
1454 "seems to have lost position @%"PRIu64", resync",
1455 vlc_stream_Tell(p_demux->s) );
1456 if( AVI_PacketSearch( p_demux ) )
1457 {
1458 msg_Err( p_demux, "resync failed" );
1459 return VLC_DEMUXER_EGENERIC;
1460 }
1461 }
1462 }
1463 else
1464 {
1465 /* check for time */
1466 if( p_stream == p_stream_master ||
1467 llabs( AVI_GetPTS( p_stream ) -
1468 AVI_GetPTS( p_stream_master ) )< 2 * CLOCK_FREQ )
1469 {
1470 /* load it and send to decoder */
1471 block_t *p_frame = ReadFrame( p_demux, p_stream, 8, avi_pk.i_size + 8 ) ;
1472 if( p_frame == NULL )
1473 {
1474 return VLC_DEMUXER_EGENERIC;
1475 }
1476 p_frame->i_pts = VLC_TS_0 + AVI_GetPTS( p_stream );
1477
1478 if( avi_pk.i_cat != VIDEO_ES )
1479 p_frame->i_dts = p_frame->i_pts;
1480 else
1481 {
1482 p_frame->i_dts = p_frame->i_pts;
1483 p_frame->i_pts = VLC_TS_INVALID;
1484 }
1485
1486 if( p_stream->i_dv_audio_rate )
1487 AVI_DvHandleAudio( p_demux, p_stream, p_frame );
1488
1489 if( p_stream->p_es )
1490 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1491 else
1492 block_Release( p_frame );
1493 }
1494 else
1495 {
1496 if( AVI_PacketNext( p_demux ) )
1497 {
1498 return VLC_DEMUXER_EOF;
1499 }
1500 }
1501
1502 /* *** update stream time position *** */
1503 if( p_stream->i_samplesize )
1504 {
1505 p_stream->i_idxposb += avi_pk.i_size;
1506 }
1507 else
1508 {
1509 if( p_stream->fmt.i_cat == AUDIO_ES )
1510 {
1511 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1512 }
1513 p_stream->i_idxposc++;
1514 }
1515
1516 }
1517 #undef p_stream
1518 }
1519
1520 return VLC_DEMUXER_SUCCESS;
1521 }
1522
1523 /*****************************************************************************
1524 * Seek: goto to i_date or i_percent
1525 *****************************************************************************/
1526 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent, bool b_accurate )
1527 {
1528 demux_sys_t *p_sys = p_demux->p_sys;
1529 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1530 i_date / CLOCK_FREQ, i_percent );
1531
1532 if( p_sys->b_seekable )
1533 {
1534 int64_t i_pos_backup = vlc_stream_Tell( p_demux->s );
1535
1536 /* Check and lazy load indexes if it was not done (not fastseekable) */
1537 if ( !p_sys->b_indexloaded && ( p_sys->i_avih_flags & AVIF_HASINDEX ) )
1538 {
1539 avi_chunk_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
1540 if (unlikely( !p_riff ))
1541 return VLC_EGENERIC;
1542
1543 int i_ret = AVI_ChunkFetchIndexes( p_demux->s, p_riff );
1544 if ( i_ret )
1545 {
1546 /* Go back to position before index failure */
1547 if ( vlc_stream_Tell( p_demux->s ) - i_pos_backup )
1548 vlc_stream_Seek( p_demux->s, i_pos_backup );
1549
1550 if ( p_sys->i_avih_flags & AVIF_MUSTUSEINDEX )
1551 return VLC_EGENERIC;
1552 }
1553 else AVI_IndexLoad( p_demux );
1554
1555 p_sys->b_indexloaded = true; /* we don't want to try each time */
1556 }
1557
1558 if( !p_sys->i_length )
1559 {
1560 avi_track_t *p_stream = NULL;
1561 unsigned i_stream = 0;
1562 int64_t i_pos;
1563
1564 if ( !p_sys->i_movi_lastchunk_pos && /* set when index is successfully loaded */
1565 ! ( p_sys->i_avih_flags & AVIF_ISINTERLEAVED ) )
1566 {
1567 msg_Err( p_demux, "seeking without index at %d%%"
1568 " only works for interleaved files", i_percent );
1569 goto failandresetpos;
1570 }
1571 /* use i_percent to create a true i_date */
1572 if( i_percent >= 100 )
1573 {
1574 msg_Warn( p_demux, "cannot seek so far !" );
1575 goto failandresetpos;
1576 }
1577 i_percent = __MAX( i_percent, 0 );
1578
1579 /* try to find chunk that is at i_percent or the file */
1580 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1581 p_sys->i_movi_begin );
1582 /* search first selected stream (and prefer non-EOF ones) */
1583 for( unsigned i = 0; i < p_sys->i_track; i++ )
1584 {
1585 avi_track_t *p_track = p_sys->track[i];
1586 if( !p_track->b_activated )
1587 continue;
1588
1589 p_stream = p_track;
1590 i_stream = i;
1591 if( !p_track->b_eof )
1592 break;
1593 }
1594 if( p_stream == NULL )
1595 {
1596 msg_Warn( p_demux, "cannot find any selected stream" );
1597 goto failandresetpos;
1598 }
1599
1600 /* be sure that the index exist */
1601 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1602 {
1603 msg_Warn( p_demux, "cannot seek" );
1604 goto failandresetpos;
1605 }
1606
1607 while( i_pos >= p_stream->idx.p_entry[p_stream->i_idxposc].i_pos +
1608 p_stream->idx.p_entry[p_stream->i_idxposc].i_length + 8 )
1609 {
1610 /* search after i_idxposc */
1611 if( AVI_StreamChunkSet( p_demux,
1612 i_stream, p_stream->i_idxposc + 1 ) )
1613 {
1614 msg_Warn( p_demux, "cannot seek" );
1615 goto failandresetpos;
1616 }
1617 }
1618
1619 i_date = AVI_GetPTS( p_stream );
1620 /* TODO better support for i_samplesize != 0 */
1621 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1622 }
1623
1624 /* */
1625 mtime_t i_wanted = i_date;
1626 mtime_t i_start = i_date;
1627 /* Do a 2 pass seek, first with video (can seek ahead due to keyframes),
1628 so we can seek audio to the same starting time */
1629 for(int i=0; i<2; i++)
1630 {
1631 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1632 {
1633 avi_track_t *p_stream = p_sys->track[i_stream];
1634
1635 if( !p_stream->b_activated )
1636 continue;
1637
1638 if( (i==0 && p_stream->fmt.i_cat != VIDEO_ES) ||
1639 (i!=0 && p_stream->fmt.i_cat == VIDEO_ES) )
1640 continue;
1641
1642 p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_wanted ) != 0;
1643 if( !p_stream->b_eof )
1644 {
1645 p_stream->i_next_block_flags |= BLOCK_FLAG_DISCONTINUITY;
1646
1647 if( p_stream->fmt.i_cat == AUDIO_ES || p_stream->fmt.i_cat == VIDEO_ES )
1648 i_start = __MIN(i_start, AVI_GetPTS( p_stream ));
1649
1650 if( i == 0 && p_stream->fmt.i_cat == VIDEO_ES )
1651 i_wanted = i_start;
1652 }
1653 }
1654 }
1655 p_sys->i_time = i_start;
1656 es_out_SetPCR( p_demux->out, VLC_TS_0 + p_sys->i_time );
1657 if( b_accurate )
1658 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, VLC_TS_0 + i_date );
1659 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /CLOCK_FREQ );
1660 return VLC_SUCCESS;
1661
1662 failandresetpos:
1663 /* Go back to position before index failure */
1664 if ( vlc_stream_Tell( p_demux->s ) - i_pos_backup )
1665 vlc_stream_Seek( p_demux->s, i_pos_backup );
1666
1667 return VLC_EGENERIC;
1668 }
1669 else
1670 {
1671 msg_Err( p_demux, "shouldn't yet be executed" );
1672 return VLC_EGENERIC;
1673 }
1674 }
1675
1676 /*****************************************************************************
1677 * Control:
1678 *****************************************************************************/
1679 static double ControlGetPosition( demux_t *p_demux )
1680 {
1681 demux_sys_t *p_sys = p_demux->p_sys;
1682
1683 if( p_sys->i_length > 0 )
1684 {
1685 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)CLOCK_FREQ );
1686 }
1687 else if( stream_Size( p_demux->s ) > 0 )
1688 {
1689 double i64 = (uint64_t)vlc_stream_Tell( p_demux->s );
1690 return i64 / stream_Size( p_demux->s );
1691 }
1692 return 0.0;
1693 }
1694
1695 static int Control( demux_t *p_demux, int i_query, va_list args )
1696 {
1697 demux_sys_t *p_sys = p_demux->p_sys;
1698 double f, *pf;
1699 int64_t i64, *pi64;
1700 bool b;
1701 vlc_meta_t *p_meta;
1702
1703 switch( i_query )
1704 {
1705 case DEMUX_CAN_SEEK:
1706 *va_arg( args, bool * ) = p_sys->b_seekable;
1707 return VLC_SUCCESS;
1708
1709 case DEMUX_GET_POSITION:
1710 pf = va_arg( args, double * );
1711 *pf = ControlGetPosition( p_demux );
1712 return VLC_SUCCESS;
1713 case DEMUX_SET_POSITION:
1714 f = va_arg( args, double );
1715 b = va_arg( args, int );
1716 if ( !p_sys->b_seekable )
1717 {
1718 return VLC_EGENERIC;
1719 }
1720 else
1721 {
1722 i64 = (mtime_t)(f * CLOCK_FREQ * p_sys->i_length);
1723 return Seek( p_demux, i64, (int)(f * 100), b );
1724 }
1725
1726 case DEMUX_GET_TIME:
1727 pi64 = va_arg( args, int64_t * );
1728 *pi64 = p_sys->i_time;
1729 return VLC_SUCCESS;
1730
1731 case DEMUX_SET_TIME:
1732 {
1733 int i_percent = 0;
1734
1735 i64 = va_arg( args, int64_t );
1736 b = va_arg( args, int );
1737 if( !p_sys->b_seekable )
1738 {
1739 return VLC_EGENERIC;
1740 }
1741 else if( p_sys->i_length > 0 )
1742 {
1743 i_percent = 100 * i64 / (p_sys->i_length*CLOCK_FREQ);
1744 }
1745 else if( p_sys->i_time > 0 )
1746 {
1747 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1748 (double)i64 / (double)p_sys->i_time );
1749 }
1750 return Seek( p_demux, i64, i_percent, b );
1751 }
1752 case DEMUX_GET_LENGTH:
1753 pi64 = va_arg( args, int64_t * );
1754 *pi64 = p_sys->i_length * (mtime_t)CLOCK_FREQ;
1755 return VLC_SUCCESS;
1756
1757 case DEMUX_GET_FPS:
1758 pf = va_arg( args, double * );
1759 *pf = 0.0;
1760 for( unsigned i = 0; i < p_sys->i_track; i++ )
1761 {
1762 avi_track_t *tk = p_sys->track[i];
1763 if( tk->fmt.i_cat == VIDEO_ES && tk->i_scale > 0)
1764 {
1765 *pf = (float)tk->i_rate / (float)tk->i_scale;
1766 break;
1767 }
1768 }
1769 return VLC_SUCCESS;
1770
1771 case DEMUX_GET_META:
1772 p_meta = va_arg( args, vlc_meta_t * );
1773 vlc_meta_Merge( p_meta, p_sys->meta );
1774 return VLC_SUCCESS;
1775
1776 case DEMUX_GET_ATTACHMENTS:
1777 {
1778 if( p_sys->i_attachment <= 0 )
1779 return VLC_EGENERIC;
1780
1781 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1782 int *pi_int = va_arg( args, int * );
1783
1784 *ppp_attach = calloc( p_sys->i_attachment, sizeof(**ppp_attach) );
1785 if( likely(*ppp_attach) )
1786 {
1787 *pi_int = p_sys->i_attachment;
1788 for( unsigned i = 0; i < p_sys->i_attachment; i++ )
1789 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachment[i] );
1790 return VLC_SUCCESS;
1791 }
1792 return VLC_EGENERIC;
1793 }
1794
1795 default:
1796 return VLC_EGENERIC;
1797 }
1798 }
1799
1800 /*****************************************************************************
1801 * Function to convert pts to chunk or byte
1802 *****************************************************************************/
1803
1804 static int64_t AVI_Rescale( int64_t i_value, uint32_t i_timescale, uint32_t i_newscale )
1805 {
1806 /* TODO: replace (and mp4) with better global helper (recursive checks) */
1807 if( i_timescale == i_newscale )
1808 return i_value;
1809
1810 if( (i_value >= 0 && i_value <= INT64_MAX / i_newscale) ||
1811 (i_value < 0 && i_value >= INT64_MIN / i_newscale) )
1812 return i_value * i_newscale / i_timescale;
1813
1814 /* overflow */
1815 int64_t q = i_value / i_timescale;
1816 int64_t r = i_value % i_timescale;
1817 return q * i_newscale + r * i_newscale / i_timescale;
1818 }
1819
1820 static int64_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1821 {
1822 if( !tk->i_scale )
1823 return 0;
1824
1825 i_pts = AVI_Rescale( i_pts, tk->i_scale, tk->i_rate );
1826 return i_pts / CLOCK_FREQ;
1827 }
1828
1829 static int64_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1830 {
1831 if( !tk->i_scale || !tk->i_samplesize )
1832 return 0;
1833
1834 i_pts = AVI_Rescale( i_pts, tk->i_scale, tk->i_rate );
1835 return i_pts / CLOCK_FREQ * tk->i_samplesize;
1836 }
1837
1838 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1839 {
1840 mtime_t i_dpts = 0;
1841
1842 if( !tk->i_rate )
1843 return i_dpts;
1844
1845 i_dpts = AVI_Rescale( CLOCK_FREQ * i_count, tk->i_rate, tk->i_scale );
1846
1847 if( tk->i_samplesize )
1848 {
1849 return i_dpts / tk->i_samplesize;
1850 }
1851 return i_dpts;
1852 }
1853
1854 static mtime_t AVI_GetPTS( avi_track_t *tk )
1855 {
1856 if( tk->i_samplesize )
1857 {
1858 int64_t i_count = 0;
1859
1860 /* we need a valid entry we will emulate one */
1861 if( tk->i_idxposc == tk->idx.i_size )
1862 {
1863 if( tk->i_idxposc )
1864 {
1865 /* use the last entry */
1866 i_count = tk->idx.p_entry[tk->idx.i_size - 1].i_lengthtotal
1867 + tk->idx.p_entry[tk->idx.i_size - 1].i_length;
1868 }
1869 }
1870 else
1871 {
1872 i_count = tk->idx.p_entry[tk->i_idxposc].i_lengthtotal;
1873 }
1874 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1875 }
1876 else
1877 {
1878 if( tk->fmt.i_cat == AUDIO_ES )
1879 {
1880 return AVI_GetDPTS( tk, tk->i_blockno );
1881 }
1882 else
1883 {
1884 return AVI_GetDPTS( tk, tk->i_idxposc );
1885 }
1886 }
1887 }
1888
1889 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1890 {
1891 demux_sys_t *p_sys = p_demux->p_sys;
1892 avi_packet_t avi_pk;
1893 int i_loop_count = 0;
1894
1895 /* find first chunk of i_stream that isn't in index */
1896
1897 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1898 {
1899 vlc_stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1900 if( AVI_PacketNext( p_demux ) )
1901 {
1902 return VLC_EGENERIC;
1903 }
1904 }
1905 else
1906 {
1907 vlc_stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1908 }
1909
1910 for( ;; )
1911 {
1912 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1913 {
1914 msg_Warn( p_demux, "cannot get packet header" );
1915 return VLC_EGENERIC;
1916 }
1917 if( avi_pk.i_stream >= p_sys->i_track ||
1918 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1919 {
1920 if( AVI_PacketNext( p_demux ) )
1921 {
1922 return VLC_EGENERIC;
1923 }
1924
1925 /* Prevents from eating all the CPU with broken files.
1926 * This value should be low enough so that it doesn't
1927 * affect the reading speed too much. */
1928 if( !(++i_loop_count % 1024) )
1929 {
1930 msleep( 10000 );
1931
1932 if( !(i_loop_count % (1024 * 10)) )
1933 msg_Warn( p_demux, "don't seem to find any data..." );
1934 }
1935 }
1936 else
1937 {
1938 avi_track_t *tk_pk = p_sys->track[avi_pk.i_stream];
1939
1940 /* add this chunk to the index */
1941 avi_entry_t index;
1942 index.i_id = avi_pk.i_fourcc;
1943 index.i_flags = AVI_GetKeyFlag(tk_pk->fmt.i_codec, avi_pk.i_peek);
1944 index.i_pos = avi_pk.i_pos;
1945 index.i_length = avi_pk.i_size;
1946 index.i_lengthtotal = index.i_length;
1947 avi_index_Append( &tk_pk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1948
1949 if( avi_pk.i_stream == i_stream )
1950 {
1951 return VLC_SUCCESS;
1952 }
1953
1954 if( AVI_PacketNext( p_demux ) )
1955 {
1956 return VLC_EGENERIC;
1957 }
1958 }
1959 }
1960 }
1961
1962 /* be sure that i_ck will be a valid index entry */
1963 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1964 unsigned int i_ck )
1965 {
1966 demux_sys_t *p_sys = p_demux->p_sys;
1967 avi_track_t *p_stream = p_sys->track[i_stream];
1968
1969 p_stream->i_idxposc = i_ck;
1970 p_stream->i_idxposb = 0;
1971
1972 if( i_ck >= p_stream->idx.i_size )
1973 {
1974 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1975 do
1976 {
1977 p_stream->i_idxposc++;
1978 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1979 {
1980 return VLC_EGENERIC;
1981 }
1982
1983 } while( p_stream->i_idxposc < i_ck );
1984 }
1985
1986 return VLC_SUCCESS;
1987 }
1988
1989 /* XXX FIXME up to now, we assume that all chunk are one after one */
1990 static int AVI_StreamBytesSet( demux_t *p_demux,
1991 unsigned int i_stream,
1992 uint32_t i_byte )
1993 {
1994 demux_sys_t *p_sys = p_demux->p_sys;
1995 avi_track_t *p_stream = p_sys->track[i_stream];
1996
1997 if( ( p_stream->idx.i_size > 0 )
1998 &&( i_byte < p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_lengthtotal +
1999 p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_length ) )
2000 {
2001 /* index is valid to find the ck */
2002 /* uses dichototmie to be fast enougth */
2003 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->idx.i_size - 1 );
2004 int i_idxmax = p_stream->idx.i_size;
2005 int i_idxmin = 0;
2006 for( ;; )
2007 {
2008 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal > i_byte )
2009 {
2010 i_idxmax = i_idxposc ;
2011 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
2012 }
2013 else
2014 {
2015 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal +
2016 p_stream->idx.p_entry[i_idxposc].i_length <= i_byte)
2017 {
2018 i_idxmin = i_idxposc ;
2019 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
2020 }
2021 else
2022 {
2023 p_stream->i_idxposc = i_idxposc;
2024 p_stream->i_idxposb = i_byte -
2025 p_stream->idx.p_entry[i_idxposc].i_lengthtotal;
2026 return VLC_SUCCESS;
2027 }
2028 }
2029 }
2030
2031 }
2032 else
2033 {
2034 p_stream->i_idxposc = p_stream->idx.i_size - 1;
2035 p_stream->i_idxposb = 0;
2036 do
2037 {
2038 p_stream->i_idxposc++;
2039 if( AVI_StreamChunkFind( p_demux, i_stream ) )
2040 {
2041 return VLC_EGENERIC;
2042 }
2043
2044 } while( p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal +
2045 p_stream->idx.p_entry[p_stream->i_idxposc].i_length <= i_byte );
2046
2047 p_stream->i_idxposb = i_byte -
2048 p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal;
2049 return VLC_SUCCESS;
2050 }
2051 }
2052
2053 static int AVI_TrackSeek( demux_t *p_demux,
2054 int i_stream,
2055 mtime_t i_date )
2056 {
2057 demux_sys_t *p_sys = p_demux->p_sys;
2058 avi_track_t *tk = p_sys->track[i_stream];
2059
2060 #define p_stream p_sys->track[i_stream]
2061 mtime_t i_oldpts;
2062
2063 i_oldpts = AVI_GetPTS( p_stream );
2064
2065 if( !p_stream->i_samplesize )
2066 {
2067 if( AVI_StreamChunkSet( p_demux,
2068 i_stream,
2069 AVI_PTSToChunk( p_stream, i_date ) ) )
2070 {
2071 return VLC_EGENERIC;
2072 }
2073
2074 if( p_stream->fmt.i_cat == AUDIO_ES )
2075 {
2076 unsigned int i;
2077 tk->i_blockno = 0;
2078 for( i = 0; i < tk->i_idxposc; i++ )
2079 {
2080 if( tk->i_blocksize > 0 )
2081 {
2082 tk->i_blockno += ( tk->idx.p_entry[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
2083 }
2084 else
2085 {
2086 tk->i_blockno++;
2087 }
2088 }
2089 }
2090
2091 msg_Dbg( p_demux,
2092 "old:%"PRId64" %s new %"PRId64,
2093 i_oldpts,
2094 i_oldpts > i_date ? ">" : "<",
2095 i_date );
2096
2097 if( p_stream->fmt.i_cat == VIDEO_ES )
2098 {
2099 /* search key frame */
2100 //if( i_date < i_oldpts || 1 )
2101 {
2102 while( p_stream->i_idxposc > 0 &&
2103 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
2104 AVIIF_KEYFRAME ) )
2105 {
2106 if( AVI_StreamChunkSet( p_demux,
2107 i_stream,
2108 p_stream->i_idxposc - 1 ) )
2109 {
2110 return VLC_EGENERIC;
2111 }
2112 }
2113 }
2114 #if 0
2115 else
2116 {
2117 while( p_stream->i_idxposc < p_stream->idx.i_size &&
2118 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
2119 AVIIF_KEYFRAME ) )
2120 {
2121 if( AVI_StreamChunkSet( p_demux,
2122 i_stream,
2123 p_stream->i_idxposc + 1 ) )
2124 {
2125 return VLC_EGENERIC;
2126 }
2127 }
2128 }
2129 #endif
2130 }
2131 }
2132 else
2133 {
2134 if( AVI_StreamBytesSet( p_demux,
2135 i_stream,
2136 AVI_PTSToByte( p_stream, i_date ) ) )
2137 {
2138 return VLC_EGENERIC;
2139 }
2140 }
2141 return VLC_SUCCESS;
2142 #undef p_stream
2143 }
2144
2145 /****************************************************************************
2146 * Return true if it's a key frame
2147 ****************************************************************************/
2148 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
2149 {
2150 switch( i_fourcc )
2151 {
2152 case VLC_CODEC_DIV1:
2153 /* we have:
2154 * startcode: 0x00000100 32bits
2155 * framenumber ? 5bits
2156 * piture type 0(I),1(P) 2bits
2157 */
2158 if( GetDWBE( p_byte ) != 0x00000100 )
2159 {
2160 /* it's not an msmpegv1 stream, strange...*/
2161 return AVIIF_KEYFRAME;
2162 }
2163 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
2164
2165 case VLC_CODEC_DIV2:
2166 case VLC_CODEC_DIV3:
2167 case VLC_CODEC_WMV1:
2168 /* we have
2169 * picture type 0(I),1(P) 2bits
2170 */
2171 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
2172 case VLC_CODEC_MP4V:
2173 /* we should find first occurrence of 0x000001b6 (32bits)
2174 * startcode: 0x000001b6 32bits
2175 * piture type 0(I),1(P) 2bits
2176 */
2177 if( GetDWBE( p_byte ) != 0x000001b6 )
2178 {
2179 /* not true , need to find the first VOP header */
2180 return AVIIF_KEYFRAME;
2181 }
2182 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
2183
2184 default:
2185 /* I can't do it, so say yes */
2186 return AVIIF_KEYFRAME;
2187 }
2188 }
2189
2190 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
2191 {
2192 switch( i_cat )
2193 {
2194 case AUDIO_ES:
2195 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
2196 return i_codec;
2197 case VIDEO_ES:
2198 return vlc_fourcc_GetCodec( i_cat, i_codec );
2199 default:
2200 return VLC_CODEC_UNKNOWN;
2201 }
2202 }
2203
2204 /****************************************************************************
2205 *
2206 ****************************************************************************/
2207 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
2208 unsigned int *pi_number,
2209 enum es_format_category_e *pi_type )
2210 {
2211 int c1, c2;
2212
2213 c1 = ((uint8_t *)&i_id)[0];
2214 c2 = ((uint8_t *)&i_id)[1];
2215
2216 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
2217 {
2218 *pi_number = 100; /* > max stream number */
2219 *pi_type = UNKNOWN_ES;
2220 }
2221 else
2222 {
2223 *pi_number = (c1 - '0') * 10 + (c2 - '0' );
2224 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
2225 {
2226 case AVITWOCC_wb:
2227 *pi_type = AUDIO_ES;
2228 break;
2229 case AVITWOCC_dc:
2230 case AVITWOCC_db:
2231 case AVITWOCC_AC:
2232 *pi_type = VIDEO_ES;
2233 break;
2234 case AVITWOCC_tx:
2235 case AVITWOCC_sb:
2236 *pi_type = SPU_ES;
2237 break;
2238 case AVITWOCC_pc:
2239 *pi_type = IGNORE_ES;
2240 break;
2241 default:
2242 *pi_type = UNKNOWN_ES;
2243 break;
2244 }
2245 }
2246 }
2247
2248 /****************************************************************************
2249 *
2250 ****************************************************************************/
2251 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
2252 {
2253 const uint8_t *p_peek;
2254
2255 if( vlc_stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
2256 {
2257 return VLC_EGENERIC;
2258 }
2259 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
2260 p_pk->i_size = GetDWLE( p_peek + 4 );
2261 p_pk->i_pos = vlc_stream_Tell( p_demux->s );
2262 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
2263 {
2264 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
2265 p_peek[10], p_peek[11] );
2266 }
2267 else
2268 {
2269 p_pk->i_type = 0;
2270 }
2271
2272 memcpy( p_pk->i_peek, p_peek + 8, 8 );
2273
2274 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2275 return VLC_SUCCESS;
2276 }
2277
2278 static int AVI_PacketNext( demux_t *p_demux )
2279 {
2280 avi_packet_t avi_ck;
2281 size_t i_skip = 0;
2282
2283 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2284 {
2285 return VLC_EGENERIC;
2286 }
2287
2288 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2289 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2290 {
2291 i_skip = 12;
2292 }
2293 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2294 avi_ck.i_type == AVIFOURCC_AVIX )
2295 {
2296 i_skip = 24;
2297 }
2298 else
2299 {
2300 if( avi_ck.i_size > UINT32_MAX - 9 )
2301 return VLC_EGENERIC;
2302 i_skip = __EVEN( avi_ck.i_size ) + 8;
2303 }
2304
2305 if( i_skip > SSIZE_MAX )
2306 return VLC_EGENERIC;
2307
2308 ssize_t i_ret = vlc_stream_Read( p_demux->s, NULL, i_skip );
2309 if( i_ret < 0 || (size_t) i_ret != i_skip )
2310 {
2311 return VLC_EGENERIC;
2312 }
2313 return VLC_SUCCESS;
2314 }
2315
2316 static int AVI_PacketSearch( demux_t *p_demux )
2317 {
2318 demux_sys_t *p_sys = p_demux->p_sys;
2319 avi_packet_t avi_pk;
2320 int i_count = 0;
2321
2322 for( ;; )
2323 {
2324 if( vlc_stream_Read( p_demux->s, NULL, 1 ) != 1 )
2325 {
2326 return VLC_EGENERIC;
2327 }
2328 AVI_PacketGetHeader( p_demux, &avi_pk );
2329 if( avi_pk.i_stream < p_sys->i_track &&
2330 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2331 {
2332 return VLC_SUCCESS;
2333 }
2334 switch( avi_pk.i_fourcc )
2335 {
2336 case AVIFOURCC_JUNK:
2337 case AVIFOURCC_LIST:
2338 case AVIFOURCC_RIFF:
2339 case AVIFOURCC_idx1:
2340 return VLC_SUCCESS;
2341 }
2342
2343 /* Prevents from eating all the CPU with broken files.
2344 * This value should be low enough so that it doesn't affect the
2345 * reading speed too much (not that we care much anyway because
2346 * this code is called only on broken files). */
2347 if( !(++i_count % 1024) )
2348 {
2349 msleep( 10000 );
2350 if( !(i_count % (1024 * 10)) )
2351 msg_Warn( p_demux, "trying to resync..." );
2352 }
2353 }
2354 }
2355
2356 /****************************************************************************
2357 * Index stuff.
2358 ****************************************************************************/
2359 static void avi_index_Init( avi_index_t *p_index )
2360 {
2361 p_index->i_size = 0;
2362 p_index->i_max = 0;
2363 p_index->p_entry = NULL;
2364 }
2365 static void avi_index_Clean( avi_index_t *p_index )
2366 {
2367 free( p_index->p_entry );
2368 }
2369 static void avi_index_Append( avi_index_t *p_index, uint32_t *pi_last_pos,
2370 avi_entry_t *p_entry )
2371 {
2372 /* Update last chunk position */
2373 if( *pi_last_pos < p_entry->i_pos )
2374 *pi_last_pos = p_entry->i_pos;
2375
2376 /* add the entry */
2377 if( p_index->i_size >= p_index->i_max )
2378 {
2379 p_index->i_max += 16384;
2380 p_index->p_entry = realloc_or_free( p_index->p_entry,
2381 p_index->i_max * sizeof( *p_index->p_entry ) );
2382 if( !p_index->p_entry )
2383 return;
2384 }
2385 /* calculate cumulate length */
2386 if( p_index->i_size > 0 )
2387 {
2388 p_entry->i_lengthtotal =
2389 p_index->p_entry[p_index->i_size - 1].i_length +
2390 p_index->p_entry[p_index->i_size - 1].i_lengthtotal;
2391 }
2392 else
2393 {
2394 p_entry->i_lengthtotal = 0;
2395 }
2396
2397 p_index->p_entry[p_index->i_size++] = *p_entry;
2398 }
2399
2400 static int AVI_IndexFind_idx1( demux_t *p_demux,
2401 avi_chunk_idx1_t **pp_idx1,
2402 uint64_t *pi_offset )
2403 {
2404 demux_sys_t *p_sys = p_demux->p_sys;
2405
2406 avi_chunk_list_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true);
2407 avi_chunk_idx1_t *p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0, false);
2408
2409 if( !p_idx1 )
2410 {
2411 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2412 return VLC_EGENERIC;
2413 }
2414 *pp_idx1 = p_idx1;
2415
2416 /* The offset in the index should be from the start of the movi content,
2417 * but some broken files use offset from the start of the file. Just
2418 * checking the offset of the first packet is not enough as some files
2419 * has unused chunk at the beginning of the movi content.
2420 */
2421 avi_chunk_list_t *p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
2422 if( !p_movi )
2423 return VLC_EGENERIC;
2424 uint64_t i_first_pos = UINT64_MAX;
2425 for( unsigned i = 0; i < __MIN( p_idx1->i_entry_count, 100 ); i++ )
2426 {
2427 if ( p_idx1->entry[i].i_length > 0 )
2428 i_first_pos = __MIN( i_first_pos, p_idx1->entry[i].i_pos );
2429 }
2430
2431 const uint64_t i_movi_content = p_movi->i_chunk_pos + 8;
2432 if( i_first_pos < i_movi_content )
2433 {
2434 *pi_offset = i_movi_content;
2435 }
2436 else if( p_sys->b_seekable && i_first_pos < UINT64_MAX )
2437 {
2438 const uint8_t *p_peek;
2439 if( !vlc_stream_Seek( p_demux->s, i_movi_content + i_first_pos ) &&
2440 vlc_stream_Peek( p_demux->s, &p_peek, 4 ) >= 4 &&
2441 ( !isdigit( p_peek[0] ) || !isdigit( p_peek[1] ) ||
2442 !isalpha( p_peek[2] ) || !isalpha( p_peek[3] ) ) )
2443 *pi_offset = 0;
2444 else
2445 *pi_offset = i_movi_content;
2446
2447 if( p_idx1->i_entry_count )
2448 {
2449 /* Invalidate offset if index refers past the data section to avoid false
2450 positives when the offset equals sample size */
2451 size_t i_dataend = *pi_offset + p_idx1->entry[p_idx1->i_entry_count - 1].i_pos +
2452 p_idx1->entry[p_idx1->i_entry_count - 1].i_length;
2453 if( i_dataend > p_movi->i_chunk_pos + p_movi->i_chunk_size )
2454 *pi_offset = 0;
2455 }
2456 }
2457 else
2458 {
2459 *pi_offset = 0;
2460 }
2461
2462 return VLC_SUCCESS;
2463 }
2464
2465 static int AVI_IndexLoad_idx1( demux_t *p_demux,
2466 avi_index_t p_index[], uint32_t *pi_last_offset )
2467 {
2468 demux_sys_t *p_sys = p_demux->p_sys;
2469
2470 avi_chunk_idx1_t *p_idx1;
2471 uint64_t i_offset;
2472 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2473 return VLC_EGENERIC;
2474
2475 p_sys->b_indexloaded = true;
2476
2477 for( unsigned i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2478 {
2479 enum es_format_category_e i_cat;
2480 unsigned i_stream;
2481
2482 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2483 &i_stream,
2484 &i_cat );
2485 if( i_stream < p_sys->i_track &&
2486 (i_cat == p_sys->track[i_stream]->fmt.i_cat || i_cat == UNKNOWN_ES ) )
2487 {
2488 avi_entry_t index;
2489 index.i_id = p_idx1->entry[i_index].i_fourcc;
2490 index.i_flags = p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2491 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2492 index.i_length = p_idx1->entry[i_index].i_length;
2493 index.i_lengthtotal = index.i_length;
2494
2495 avi_index_Append( &p_index[i_stream], pi_last_offset, &index );
2496 }
2497 }
2498
2499 #ifdef AVI_DEBUG
2500 for( unsigned i_index = 0; i_index< p_idx1->i_entry_count && i_index < p_sys->i_track; i_index++ )
2501 {
2502 for( unsigned i = 0; i < p_index[i_index].i_size; i++ )
2503 {
2504 mtime_t i_length;
2505 if( p_sys->track[i_index]->i_samplesize )
2506 {
2507 i_length = AVI_GetDPTS( p_sys->track[i_index],
2508 p_index[i_index].p_entry[i].i_lengthtotal );
2509 }
2510 else
2511 {
2512 i_length = AVI_GetDPTS( p_sys->track[i_index], i );
2513 }
2514 msg_Dbg( p_demux, "index stream %d @%ld time %ld", i_index,
2515 p_index[i_index].p_entry[i].i_pos, i_length );
2516 }
2517 }
2518 #endif
2519 return VLC_SUCCESS;
2520 }
2521
2522 static void __Parse_indx( demux_t *p_demux, avi_index_t *p_index, uint32_t *pi_max_offset,
2523 avi_chunk_indx_t *p_indx )
2524 {
2525 demux_sys_t *p_sys = p_demux->p_sys;
2526 avi_entry_t index;
2527
2528 p_sys->b_indexloaded = true;
2529
2530 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2531 if( p_indx->i_indexsubtype == 0 )
2532 {
2533 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2534 {
2535 index.i_id = p_indx->i_id;
2536 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2537 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2538 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2539 index.i_lengthtotal = index.i_length;
2540
2541 avi_index_Append( p_index, pi_max_offset, &index );
2542 }
2543 }
2544 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2545 {
2546 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2547 {
2548 index.i_id = p_indx->i_id;
2549 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2550 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2551 index.i_length = p_indx->idx.field[i].i_size;
2552 index.i_lengthtotal = index.i_length;
2553
2554 avi_index_Append( p_index, pi_max_offset, &index );
2555 }
2556 }
2557 else
2558 {
2559 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2560 }
2561 }
2562
2563 static void AVI_IndexLoad_indx( demux_t *p_demux,
2564 avi_index_t p_index[], uint32_t *pi_last_offset )
2565 {
2566 demux_sys_t *p_sys = p_demux->p_sys;
2567
2568 avi_chunk_list_t *p_riff;
2569 avi_chunk_list_t *p_hdrl;
2570
2571 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true);
2572 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0, true );
2573
2574 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2575 {
2576 avi_chunk_list_t *p_strl;
2577 avi_chunk_indx_t *p_indx;
2578
2579 #define p_stream p_sys->track[i_stream]
2580 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream, true );
2581 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0, false );
2582
2583 if( !p_indx )
2584 {
2585 if( p_sys->b_odml )
2586 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2587 "file?)" );
2588 continue;
2589 }
2590
2591 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2592 {
2593 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, p_indx );
2594 }
2595 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2596 {
2597 if ( !p_sys->b_seekable )
2598 return;
2599 avi_chunk_t ck_sub;
2600 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2601 {
2602 if( vlc_stream_Seek( p_demux->s,
2603 p_indx->idx.super[i].i_offset ) ||
2604 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2605 {
2606 break;
2607 }
2608 if( ck_sub.indx.i_indextype == AVI_INDEX_OF_CHUNKS )
2609 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, &ck_sub.indx );
2610 AVI_ChunkClean( p_demux->s, &ck_sub );
2611 }
2612 }
2613 else
2614 {
2615 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2616 }
2617 #undef p_stream
2618 }
2619 }
2620
2621 static void AVI_IndexLoad( demux_t *p_demux )
2622 {
2623 demux_sys_t *p_sys = p_demux->p_sys;
2624
2625 /* Load indexes */
2626 assert( p_sys->i_track <= 100 );
2627 avi_index_t p_idx_indx[p_sys->i_track];
2628 avi_index_t p_idx_idx1[p_sys->i_track];
2629 for( unsigned i = 0; i < p_sys->i_track; i++ )
2630 {
2631 avi_index_Init( &p_idx_indx[i] );
2632 avi_index_Init( &p_idx_idx1[i] );
2633 }
2634 uint32_t i_indx_last_pos = p_sys->i_movi_lastchunk_pos;
2635 uint32_t i_idx1_last_pos = p_sys->i_movi_lastchunk_pos;
2636
2637 AVI_IndexLoad_indx( p_demux, p_idx_indx, &i_indx_last_pos );
2638 if( !p_sys->b_odml )
2639 AVI_IndexLoad_idx1( p_demux, p_idx_idx1, &i_idx1_last_pos );
2640
2641 /* Select the longest index */
2642 for( unsigned i = 0; i < p_sys->i_track; i++ )
2643 {
2644 if( p_idx_indx[i].i_size > p_idx_idx1[i].i_size )
2645 {
2646 msg_Dbg( p_demux, "selected ODML index for stream[%u]", i );
2647 p_sys->track[i]->idx = p_idx_indx[i];
2648 avi_index_Clean( &p_idx_idx1[i] );
2649 }
2650 else
2651 {
2652 msg_Dbg( p_demux, "selected standard index for stream[%u]", i );
2653 p_sys->track[i]->idx = p_idx_idx1[i];
2654 avi_index_Clean( &p_idx_indx[i] );
2655 }
2656 }
2657 p_sys->i_movi_lastchunk_pos = __MAX( i_indx_last_pos, i_idx1_last_pos );
2658
2659 for( unsigned i = 0; i < p_sys->i_track; i++ )
2660 {
2661 avi_index_t *p_index = &p_sys->track[i]->idx;
2662
2663 /* Fix key flag */
2664 bool b_key = false;
2665 for( unsigned j = 0; !b_key && j < p_index->i_size; j++ )
2666 b_key = p_index->p_entry[j].i_flags & AVIIF_KEYFRAME;
2667 if( !b_key )
2668 {
2669 msg_Err( p_demux, "no key frame set for track %u", i );
2670 for( unsigned j = 0; j < p_index->i_size; j++ )
2671 p_index->p_entry[j].i_flags |= AVIIF_KEYFRAME;
2672 }
2673
2674 /* */
2675 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2676 i, p_index->i_size );
2677 }
2678 }
2679
2680 static void AVI_IndexCreate( demux_t *p_demux )
2681 {
2682 demux_sys_t *p_sys = p_demux->p_sys;
2683
2684 avi_chunk_list_t *p_riff;
2685 avi_chunk_list_t *p_movi;
2686
2687 unsigned int i_stream;
2688 uint32_t i_movi_end;
2689
2690 mtime_t i_dialog_update;
2691 vlc_dialog_id *p_dialog_id = NULL;
2692
2693 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
2694 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
2695
2696 if( !p_movi )
2697 {
2698 msg_Err( p_demux, "cannot find p_movi" );
2699 return;
2700 }
2701
2702 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2703 avi_index_Init( &p_sys->track[i_stream]->idx );
2704
2705 i_movi_end = __MIN( (uint32_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2706 stream_Size( p_demux->s ) );
2707
2708 vlc_stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2709 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2710
2711
2712 /* Only show dialog if AVI is > 10MB */
2713 i_dialog_update = mdate();
2714 if( stream_Size( p_demux->s ) > 10000000 )
2715 {
2716 p_dialog_id =
2717 vlc_dialog_display_progress( p_demux, false, 0.0, _("Cancel"),
2718 _("Broken or missing AVI Index"),
2719 _("Fixing AVI Index...") );
2720 }
2721
2722 for( ;; )
2723 {
2724 avi_packet_t pk;
2725
2726 /* Don't update/check dialog too often */
2727 if( p_dialog_id != NULL && mdate() - i_dialog_update > 100000 )
2728 {
2729 if( vlc_dialog_is_cancelled( p_demux, p_dialog_id ) )
2730 break;
2731
2732 double f_current = vlc_stream_Tell( p_demux->s );
2733 double f_size = stream_Size( p_demux->s );
2734 double f_pos = f_current / f_size;
2735 vlc_dialog_update_progress( p_demux, p_dialog_id, f_pos );
2736
2737 i_dialog_update = mdate();
2738 }
2739
2740 if( AVI_PacketGetHeader( p_demux, &pk ) )
2741 break;
2742
2743 if( pk.i_stream < p_sys->i_track &&
2744 pk.i_cat == p_sys->track[pk.i_stream]->fmt.i_cat )
2745 {
2746 avi_track_t *tk = p_sys->track[pk.i_stream];
2747
2748 avi_entry_t index;
2749 index.i_id = pk.i_fourcc;
2750 index.i_flags = AVI_GetKeyFlag(tk->fmt.i_codec, pk.i_peek);
2751 index.i_pos = pk.i_pos;
2752 index.i_length = pk.i_size;
2753 index.i_lengthtotal = pk.i_size;
2754 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
2755 }
2756 else
2757 {
2758 switch( pk.i_fourcc )
2759 {
2760 case AVIFOURCC_idx1:
2761 if( p_sys->b_odml )
2762 {
2763 avi_chunk_list_t *p_sysx;
2764 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2765 AVIFOURCC_RIFF, 1, true );
2766
2767 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2768 if( !p_sysx || vlc_stream_Seek( p_demux->s,
2769 p_sysx->i_chunk_pos + 24 ) )
2770 goto print_stat;
2771 break;
2772 }
2773 goto print_stat;
2774
2775 case AVIFOURCC_RIFF:
2776 msg_Dbg( p_demux, "new RIFF chunk found" );
2777 break;
2778
2779 case AVIFOURCC_rec:
2780 case AVIFOURCC_JUNK:
2781 break;
2782
2783 default:
2784 msg_Warn( p_demux, "need resync, probably broken avi" );
2785 if( AVI_PacketSearch( p_demux ) )
2786 {
2787 msg_Warn( p_demux, "lost sync, abord index creation" );
2788 goto print_stat;
2789 }
2790 }
2791 }
2792
2793 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2794 AVI_PacketNext( p_demux ) )
2795 {
2796 break;
2797 }
2798 }
2799
2800 print_stat:
2801 if( p_dialog_id != NULL )
2802 vlc_dialog_release( p_demux, p_dialog_id );
2803
2804 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2805 {
2806 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2807 i_stream, p_sys->track[i_stream]->idx.i_size );
2808 }
2809 }
2810
2811 /* */
2812 static void AVI_MetaLoad( demux_t *p_demux,
2813 avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih )
2814 {
2815 demux_sys_t *p_sys = p_demux->p_sys;
2816
2817 vlc_meta_t *p_meta = p_sys->meta = vlc_meta_New();
2818 if( !p_meta )
2819 return;
2820
2821 char buffer[200];
2822 snprintf( buffer, sizeof(buffer), "%s%s%s%s",
2823 p_avih->i_flags&AVIF_HASINDEX ? " HAS_INDEX" : "",
2824 p_avih->i_flags&AVIF_MUSTUSEINDEX ? " MUST_USE_INDEX" : "",
2825 p_avih->i_flags&AVIF_ISINTERLEAVED ? " IS_INTERLEAVED" : "",
2826 p_avih->i_flags&AVIF_TRUSTCKTYPE ? " TRUST_CKTYPE" : "" );
2827 vlc_meta_SetSetting( p_meta, buffer );
2828
2829 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0, true );
2830 if( !p_info )
2831 return;
2832
2833 static const struct {
2834 vlc_fourcc_t i_id;
2835 int i_type;
2836 } p_dsc[] = {
2837 { AVIFOURCC_IART, vlc_meta_Artist },
2838 { AVIFOURCC_ICMT, vlc_meta_Description },
2839 { AVIFOURCC_ICOP, vlc_meta_Copyright },
2840 { AVIFOURCC_IGNR, vlc_meta_Genre },
2841 { AVIFOURCC_INAM, vlc_meta_Title },
2842 { AVIFOURCC_ICRD, vlc_meta_Date },
2843 { AVIFOURCC_ILNG, vlc_meta_Language },
2844 { AVIFOURCC_IRTD, vlc_meta_Rating },
2845 { AVIFOURCC_IWEB, vlc_meta_URL },
2846 { AVIFOURCC_IPRT, vlc_meta_TrackNumber },
2847 { AVIFOURCC_IFRM, vlc_meta_TrackTotal },
2848 { 0, -1 }
2849 };
2850 for( int i = 0; p_dsc[i].i_id != 0; i++ )
2851 {
2852 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_dsc[i].i_id, 0, false );
2853 if( !p_strz || !p_strz->p_str )
2854 continue;
2855 char *psz_value = FromACP( p_strz->p_str );
2856 if( !psz_value )
2857 continue;
2858
2859 if( *psz_value )
2860 vlc_meta_Set( p_meta, p_dsc[i].i_type, psz_value );
2861 free( psz_value );
2862 }
2863
2864 static const vlc_fourcc_t p_extra[] = {
2865 AVIFOURCC_IARL, AVIFOURCC_ICMS, AVIFOURCC_ICRP, AVIFOURCC_IDIM, AVIFOURCC_IDPI,
2866 AVIFOURCC_IENG, AVIFOURCC_IKEY, AVIFOURCC_ILGT, AVIFOURCC_IMED, AVIFOURCC_IPLT,
2867 AVIFOURCC_IPRD, AVIFOURCC_ISBJ, AVIFOURCC_ISFT, AVIFOURCC_ISHP, AVIFOURCC_ISRC,
2868 AVIFOURCC_ISRF, AVIFOURCC_ITCH, AVIFOURCC_ISMP, AVIFOURCC_IDIT, AVIFOURCC_ISGN,
2869 AVIFOURCC_IWRI, AVIFOURCC_IPRO, AVIFOURCC_ICNM, AVIFOURCC_IPDS, AVIFOURCC_IEDT,
2870 AVIFOURCC_ICDS, AVIFOURCC_IMUS, AVIFOURCC_ISTD, AVIFOURCC_IDST, AVIFOURCC_ICNT,
2871 AVIFOURCC_ISTR, 0,
2872 };
2873
2874 for( int i = 0; p_extra[i] != 0; i++ )
2875 {
2876 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_extra[i], 0, false );
2877 if( !p_strz || !p_strz->p_str )
2878 continue;
2879 char *psz_value = FromACP( p_strz->p_str );
2880 if( !psz_value )
2881 continue;
2882
2883 if( *psz_value )
2884 vlc_meta_AddExtra( p_meta, p_strz->p_type, psz_value );
2885 free( psz_value );
2886 }
2887 }
2888
2889 static void AVI_DvHandleAudio( demux_t *p_demux, avi_track_t *tk, block_t *p_frame )
2890 {
2891 size_t i_offset = 80 * 6 + 80 * 16 * 3 + 3;
2892 if( p_frame->i_buffer < i_offset + 5 )
2893 return;
2894
2895 if( p_frame->p_buffer[i_offset] != 0x50 )
2896 return;
2897
2898 es_format_t fmt;
2899 dv_get_audio_format( &fmt, &p_frame->p_buffer[i_offset + 1] );
2900
2901 if( tk->p_es_dv_audio && tk->i_dv_audio_rate != (int)fmt.audio.i_rate )
2902 {
2903 es_out_Del( p_demux->out, tk->p_es_dv_audio );
2904 tk->p_es_dv_audio = es_out_Add( p_demux->out, &fmt );
2905 }
2906 else if( !tk->p_es_dv_audio )
2907 {
2908 tk->p_es_dv_audio = es_out_Add( p_demux->out, &fmt );
2909 }
2910 tk->i_dv_audio_rate = fmt.audio.i_rate;
2911 es_format_Clean( &fmt );
2912
2913 block_t *p_frame_audio = dv_extract_audio( p_frame );
2914 if( p_frame_audio )
2915 {
2916 if( tk->p_es_dv_audio )
2917 es_out_Send( p_demux->out, tk->p_es_dv_audio, p_frame_audio );
2918 else
2919 block_Release( p_frame_audio );
2920 }
2921 }
2922
2923 /*****************************************************************************
2924 * Subtitles
2925 *****************************************************************************/
2926 static void AVI_ExtractSubtitle( demux_t *p_demux,
2927 unsigned int i_stream,
2928 avi_chunk_list_t *p_strl,
2929 avi_chunk_STRING_t *p_strn )
2930 {
2931 demux_sys_t *p_sys = p_demux->p_sys;
2932 block_t *p_block = NULL;
2933 input_attachment_t *p_attachment = NULL;
2934 char *psz_description = NULL;
2935 avi_chunk_indx_t *p_indx = NULL;
2936
2937 if( !p_sys->b_seekable )
2938 goto exit;
2939
2940 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0, false );
2941 avi_chunk_t ck;
2942 int64_t i_position;
2943 unsigned i_size;
2944 if( p_indx )
2945 {
2946 if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES &&
2947 p_indx->i_entriesinuse > 0 )
2948 {
2949 if( vlc_stream_Seek( p_demux->s, p_indx->idx.super[0].i_offset ) ||
2950 AVI_ChunkRead( p_demux->s, &ck, NULL ) )
2951 goto exit;
2952 p_indx = &ck.indx;
2953 }
2954
2955 if( p_indx->i_indextype != AVI_INDEX_OF_CHUNKS ||
2956 p_indx->i_entriesinuse != 1 ||
2957 p_indx->i_indexsubtype != 0 )
2958 goto exit;
2959
2960 i_position = p_indx->i_baseoffset +
2961 p_indx->idx.std[0].i_offset - 8;
2962 i_size = (p_indx->idx.std[0].i_size & 0x7fffffff) + 8;
2963 }
2964 else
2965 {
2966 avi_chunk_idx1_t *p_idx1;
2967 uint64_t i_offset;
2968
2969 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2970 goto exit;
2971
2972 i_size = 0;
2973 for( unsigned i = 0; i < p_idx1->i_entry_count; i++ )
2974 {
2975 const idx1_entry_t *e = &p_idx1->entry[i];
2976 enum es_format_category_e i_cat;
2977 unsigned i_stream_idx;
2978
2979 AVI_ParseStreamHeader( e->i_fourcc, &i_stream_idx, &i_cat );
2980 if( i_cat == SPU_ES && i_stream_idx == i_stream )
2981 {
2982 i_position = e->i_pos + i_offset;
2983 i_size = e->i_length + 8;
2984 break;
2985 }
2986 }
2987 if( i_size <= 0 )
2988 goto exit;
2989 }
2990
2991 /* */
2992 if( i_size > 10000000 )
2993 {
2994 msg_Dbg( p_demux, "Attached subtitle too big: %u", i_size );
2995 goto exit;
2996 }
2997
2998 if( vlc_stream_Seek( p_demux->s, i_position ) )
2999 goto exit;
3000 p_block = vlc_stream_Block( p_demux->s, i_size );
3001 if( !p_block )
3002 goto exit;
3003
3004 /* Parse packet header */
3005 const uint8_t *p = p_block->p_buffer;
3006 if( i_size < 8 || p[2] != 't' || p[3] != 'x' )
3007 goto exit;
3008 p += 8;
3009 i_size -= 8;
3010
3011 /* Parse subtitle chunk header */
3012 if( i_size < 11 || memcmp( p, "GAB2", 4 ) ||
3013 p[4] != 0x00 || GetWLE( &p[5] ) != 0x2 )
3014 goto exit;
3015 const unsigned i_name = GetDWLE( &p[7] );
3016 if( 11 + i_size <= i_name )
3017 goto exit;
3018 if( i_name > 0 )
3019 psz_description = FromCharset( "UTF-16LE", &p[11], i_name );
3020 p += 11 + i_name;
3021 i_size -= 11 + i_name;
3022 if( i_size < 6 || GetWLE( &p[0] ) != 0x04 )
3023 goto exit;
3024 const unsigned i_payload = GetDWLE( &p[2] );
3025 if( i_size < 6 + i_payload || i_payload <= 0 )
3026 goto exit;
3027 p += 6;
3028 i_size -= 6;
3029
3030 if( !psz_description )
3031 psz_description = p_strn && p_strn->p_str ? FromACP( p_strn->p_str ) : NULL;
3032 char *psz_name;
3033 if( asprintf( &psz_name, "subtitle%d.srt", p_sys->i_attachment ) <= 0 )
3034 psz_name = NULL;
3035 p_attachment = vlc_input_attachment_New( psz_name,
3036 "application/x-srt",
3037 psz_description,
3038 p, i_payload );
3039 if( p_attachment )
3040 TAB_APPEND( p_sys->i_attachment, p_sys->attachment, p_attachment );
3041 free( psz_name );
3042
3043 exit:
3044 free( psz_description );
3045
3046 if( p_block )
3047 block_Release( p_block );
3048
3049 if( p_attachment )
3050 msg_Dbg( p_demux, "Loaded an embedded subtitle" );
3051 else
3052 msg_Warn( p_demux, "Failed to load an embedded subtitle" );
3053
3054 if( p_indx == &ck.indx )
3055 AVI_ChunkClean( p_demux->s, &ck );
3056 }
3057 /*****************************************************************************
3058 * Stream management
3059 *****************************************************************************/
3060 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
3061 {
3062 demux_sys_t *p_sys = p_demux->p_sys;
3063 unsigned int i;
3064 int b_end = true;
3065
3066 for( i = 0; i < p_sys->i_track; i++ )
3067 {
3068 avi_track_t *tk = p_sys->track[i];
3069 if( tk->i_idxposc >= tk->idx.i_size )
3070 {
3071 tk->b_eof = true;
3072 }
3073 else
3074 {
3075 b_end = false;
3076 }
3077 }
3078 return( b_end );
3079 }
3080
3081 /****************************************************************************
3082 * AVI_MovieGetLength give max streams length in second
3083 ****************************************************************************/
3084 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
3085 {
3086 demux_sys_t *p_sys = p_demux->p_sys;
3087 mtime_t i_maxlength = 0;
3088 unsigned int i;
3089
3090 for( i = 0; i < p_sys->i_track; i++ )
3091 {
3092 avi_track_t *tk = p_sys->track[i];
3093 mtime_t i_length;
3094
3095 /* fix length for each stream */
3096 if( tk->idx.i_size < 1 || !tk->idx.p_entry )
3097 {
3098 continue;
3099 }
3100
3101 if( tk->i_samplesize )
3102 {
3103 i_length = AVI_GetDPTS( tk,
3104 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal +
3105 tk->idx.p_entry[tk->idx.i_size-1].i_length );
3106 }
3107 else
3108 {
3109 i_length = AVI_GetDPTS( tk, tk->idx.i_size );
3110 }
3111 i_length /= CLOCK_FREQ; /* in seconds */
3112
3113 msg_Dbg( p_demux,
3114 "stream[%d] length:%"PRId64" (based on index)",
3115 i,
3116 i_length );
3117 i_maxlength = __MAX( i_maxlength, i_length );
3118 }
3119
3120 return i_maxlength;
3121 }
VLC Development tree mirror