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[vlc.git] / modules / demux / avi / avi.c
blobaa8762f701a62f470c96aa5b616434d2cacbc3d8
1 /*****************************************************************************
2 * avi.c : AVI file Stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2009 VLC authors and VideoLAN
5 *
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * 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 #include <ctype.h>
32 #include <limits.h>
33
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_demux.h>
37 #include <vlc_input.h>
38
39 #include <vlc_dialog.h>
40
41 #include <vlc_meta.h>
42 #include <vlc_codecs.h>
43 #include <vlc_charset.h>
44
45 #include "libavi.h"
46 #include "../rawdv.h"
47 #include "bitmapinfoheader.h"
48
49 /*****************************************************************************
50 * Module descriptor
51 *****************************************************************************/
52
53 #define INTERLEAVE_TEXT N_("Force interleaved method" )
54
55 #define INDEX_TEXT N_("Force index creation")
56 #define INDEX_LONGTEXT N_( \
57 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
58 "or incomplete (not seekable)." )
59
60 static int Open ( vlc_object_t * );
61 static void Close( vlc_object_t * );
62
63 static const int pi_index[] = {0,1,2,3};
64
65 static const char *const ppsz_indexes[] = { N_("Ask for action"),
66 N_("Always fix"),
67 N_("Never fix"),
68 N_("Fix when necessary")};
69
70 vlc_module_begin ()
71 set_shortname( "AVI" )
72 set_description( N_("AVI demuxer") )
73 set_capability( "demux", 212 )
74 set_category( CAT_INPUT )
75 set_subcategory( SUBCAT_INPUT_DEMUX )
76 add_file_extension("avi")
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 *, vlc_tick_t, double, 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 VLC_TICK_FROM_MS(25)
102 #define READ_LENGTH_NONINTERLEAVED VLC_TICK_FROM_MS(1500)
103
104 //#define AVI_DEBUG
105
106 typedef struct
107 {
108 vlc_fourcc_t i_fourcc;
109 uint64_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 uint64_t i_pos;
125 uint32_t i_length;
126 uint64_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 *, uint64_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 struct bitmapinfoheader_properties bihprops;
151
152 es_format_t fmt;
153 es_out_id_t *p_es;
154 int i_next_block_flags;
155
156 int i_dv_audio_rate;
157 es_out_id_t *p_es_dv_audio;
158
159 /* Avi Index */
160 avi_index_t idx;
161
162 unsigned int i_idxposc; /* numero of chunk */
163 unsigned int i_idxposb; /* byte in the current chunk */
164
165 /* For VBR audio only */
166 unsigned int i_blockno;
167 unsigned int i_blocksize;
168
169 } avi_track_t;
170
171 typedef struct
172 {
173 vlc_tick_t i_time;
174 vlc_tick_t i_length;
175
176 bool b_interleaved;
177 bool b_seekable;
178 bool b_fastseekable;
179 bool b_indexloaded; /* if we read indexes from end of file before starting */
180 vlc_tick_t i_read_increment;
181 uint32_t i_avih_flags;
182 avi_chunk_t ck_root;
183
184 bool b_odml;
185
186 uint64_t i_movi_begin;
187 uint64_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
188
189 /* number of streams and information */
190 unsigned int i_track;
191 avi_track_t **track;
192
193 /* meta */
194 vlc_meta_t *meta;
195
196 unsigned int i_attachment;
197 input_attachment_t **attachment;
198 } demux_sys_t;
199
200 #define __EVEN(x) (((x) & 1) ? (x) + 1 : (x))
201
202 static int64_t AVI_PTSToChunk( avi_track_t *, vlc_tick_t i_pts );
203 static int64_t AVI_PTSToByte ( avi_track_t *, vlc_tick_t i_pts );
204 static vlc_tick_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
205 static vlc_tick_t AVI_GetPTS ( avi_track_t * );
206
207
208 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
209 static int AVI_StreamChunkSet ( demux_t *,
210 unsigned int i_stream, unsigned int i_ck );
211 static int AVI_StreamBytesSet ( demux_t *,
212 unsigned int i_stream, uint64_t i_byte );
213
214 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
215 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
216
217 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
218 static int AVI_PacketNext ( demux_t * );
219 static int AVI_PacketSearch ( demux_t * );
220
221 static void AVI_IndexLoad ( demux_t * );
222 static void AVI_IndexCreate ( demux_t * );
223
224 static void AVI_ExtractSubtitle( demux_t *, unsigned int i_stream, avi_chunk_list_t *, avi_chunk_STRING_t * );
225
226 static void AVI_DvHandleAudio( demux_t *, avi_track_t *, block_t * );
227
228 static vlc_tick_t AVI_MovieGetLength( demux_t * );
229
230 static void AVI_MetaLoad( demux_t *, avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih );
231
232 /*****************************************************************************
233 * Stream management
234 *****************************************************************************/
235 static int AVI_TrackSeek ( demux_t *, int, vlc_tick_t );
236 static int AVI_TrackStopFinishedStreams( demux_t *);
237
238 /* Remarks:
239 - For VBR mp3 stream:
240 count blocks by rounded-up chunksizes instead of chunks
241 we need full emulation of dshow avi demuxer bugs :(
242 fixes silly nandub-style a-v delaying in avi with vbr mp3...
243 (from mplayer 2002/08/02)
244 - to complete....
245 */
246
247 #define QNAP_HEADER_SIZE 56
248 static bool IsQNAPCodec(vlc_fourcc_t codec)
249 {
250 switch (codec)
251 {
252 case VLC_FOURCC('w', '2', '6', '4'):
253 case VLC_FOURCC('q', '2', '6', '4'):
254 case VLC_FOURCC('Q', '2', '6', '4'):
255 case VLC_FOURCC('w', 'M', 'P', '4'):
256 case VLC_FOURCC('q', 'M', 'P', '4'):
257 case VLC_FOURCC('Q', 'M', 'P', '4'):
258 case VLC_FOURCC('w', 'I', 'V', 'G'):
259 case VLC_FOURCC('q', 'I', 'V', 'G'):
260 case VLC_FOURCC('Q', 'I', 'V', 'G'):
261 return true;
262 default:
263 return false;
264 }
265 }
266
267 /*****************************************************************************
268 * Close: frees unused data
269 *****************************************************************************/
270 static void Close ( vlc_object_t * p_this )
271 {
272 demux_t * p_demux = (demux_t *)p_this;
273 demux_sys_t *p_sys = p_demux->p_sys ;
274
275 for( unsigned int i = 0; i < p_sys->i_track; i++ )
276 {
277 if( p_sys->track[i] )
278 {
279 es_format_Clean( &p_sys->track[i]->fmt );
280 avi_index_Clean( &p_sys->track[i]->idx );
281 free( p_sys->track[i] );
282 }
283 }
284 free( p_sys->track );
285
286 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
287 if( p_sys->meta )
288 vlc_meta_Delete( p_sys->meta );
289
290 for( unsigned i = 0; i < p_sys->i_attachment; i++)
291 vlc_input_attachment_Release(p_sys->attachment[i]);
292 free(p_sys->attachment);
293
294 free( p_sys );
295 }
296
297 /*****************************************************************************
298 * Open: check file and initializes AVI structures
299 *****************************************************************************/
300 static int Open( vlc_object_t * p_this )
301 {
302 demux_t *p_demux = (demux_t *)p_this;
303 demux_sys_t *p_sys;
304
305 bool b_index = false, b_aborted = false;
306 int i_do_index;
307
308 avi_chunk_list_t *p_riff;
309 avi_chunk_list_t *p_hdrl, *p_movi;
310 avi_chunk_avih_t *p_avih;
311
312 unsigned int i_track;
313 unsigned int i_peeker;
314
315 const uint8_t *p_peek;
316
317 /* Is it an avi file ? */
318 if( vlc_stream_Peek( p_demux->s, &p_peek, 200 ) < 200 )
319 return VLC_EGENERIC;
320
321 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
322 {
323 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
324 break;
325 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
326 break;
327 p_peek++;
328 }
329 if( i_peeker == 188 )
330 {
331 return VLC_EGENERIC;
332 }
333
334 if( i_peeker > 0
335 && vlc_stream_Read( p_demux->s, NULL, i_peeker ) < i_peeker )
336 return VLC_EGENERIC;
337
338 /* Initialize input structures. */
339 p_sys = p_demux->p_sys = calloc( 1, sizeof(demux_sys_t) );
340 if( unlikely(!p_sys) )
341 return VLC_EGENERIC;
342 p_sys->b_odml = false;
343 p_sys->meta = NULL;
344 TAB_INIT(p_sys->i_track, p_sys->track);
345 TAB_INIT(p_sys->i_attachment, p_sys->attachment);
346
347 vlc_stream_Control( p_demux->s, STREAM_CAN_FASTSEEK,
348 &p_sys->b_fastseekable );
349 vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &p_sys->b_seekable );
350
351 p_sys->b_interleaved = var_InheritBool( p_demux, "avi-interleaved" );
352
353 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
354 {
355 msg_Err( p_demux, "avi module discarded (invalid file)" );
356 free(p_sys);
357 return VLC_EGENERIC;
358 }
359
360 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF, true ) > 1 )
361 {
362 unsigned int i_count =
363 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF, true );
364
365 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
366 for( unsigned i = 1; i < i_count; i++ )
367 {
368 avi_chunk_list_t *p_sysx;
369
370 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i, true );
371 if( p_sysx && p_sysx->i_type == AVIFOURCC_AVIX )
372 {
373 msg_Warn( p_demux, "detected OpenDML file" );
374 p_sys->b_odml = true;
375 break;
376 }
377 }
378 }
379
380 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
381 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0, true );
382 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
383 if( !p_movi )
384 p_movi = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_movi, 0, true );
385
386 if( !p_hdrl || !p_movi )
387 {
388 msg_Err( p_demux, "invalid file: cannot find hdrl or movi chunks" );
389 goto error;
390 }
391
392 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0, false ) ) )
393 {
394 msg_Err( p_demux, "invalid file: cannot find avih chunk" );
395 goto error;
396 }
397 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl, true );
398 if( p_avih->i_streams != i_track )
399 {
400 msg_Warn( p_demux,
401 "found %d stream but %d are declared",
402 i_track, p_avih->i_streams );
403 }
404 if( i_track == 0 )
405 {
406 msg_Err( p_demux, "no stream defined!" );
407 goto error;
408 }
409
410 /* print information on streams */
411 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
412 i_track,
413 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
414 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
415 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
416 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
417
418 p_sys->b_interleaved |= (p_avih->i_flags & AVIF_ISINTERLEAVED);
419
420 /* Set callbacks */
421 p_demux->pf_control = Control;
422
423 if( p_sys->b_fastseekable )
424 {
425 p_demux->pf_demux = Demux_Seekable;
426 p_sys->i_read_increment = READ_LENGTH;
427 }
428 else if( p_sys->b_seekable )
429 {
430 p_demux->pf_demux = Demux_Seekable;
431 p_sys->i_read_increment = READ_LENGTH_NONINTERLEAVED;
432 if( !p_sys->b_interleaved )
433 msg_Warn( p_demux, "Non interleaved content over slow seekable, "
434 "expect bad performance" );
435 }
436 else
437 {
438 msg_Warn( p_demux, "Non seekable content " );
439
440 p_demux->pf_demux = Demux_UnSeekable;
441 p_sys->i_read_increment = READ_LENGTH_NONINTERLEAVED;
442 /* non seekable and non interleaved case ? well... */
443 if( !p_sys->b_interleaved )
444 {
445 msg_Warn( p_demux, "Non seekable non interleaved content, "
446 "disabling other tracks" );
447 i_track = __MIN(i_track, 1);
448 }
449 }
450
451 AVI_MetaLoad( p_demux, p_riff, p_avih );
452 p_sys->i_avih_flags = p_avih->i_flags;
453
454 /* now read info on each stream and create ES */
455 for( unsigned i = 0 ; i < i_track; i++ )
456 {
457 avi_track_t *tk = calloc( 1, sizeof( avi_track_t ) );
458 if( unlikely( !tk ) )
459 goto error;
460
461 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i, true );
462 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0, false );
463 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0, false );
464 avi_chunk_strf_auds_t *p_auds = NULL;
465 avi_chunk_strf_vids_t *p_vids = NULL;
466
467 tk->b_eof = false;
468 tk->b_activated = true;
469
470 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0, false );
471 p_auds = (avi_chunk_strf_auds_t*)p_vids;
472
473 if( p_strl == NULL || p_strh == NULL || p_vids == NULL )
474 {
475 msg_Warn( p_demux, "stream[%d] incomplete", i );
476 free( tk );
477 continue;
478 }
479
480 tk->i_rate = p_strh->i_rate;
481 tk->i_scale = p_strh->i_scale;
482 tk->i_samplesize = p_strh->i_samplesize;
483 msg_Dbg( p_demux, "stream[%u] rate:%u scale:%u samplesize:%u",
484 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
485 if( !tk->i_scale || !tk->i_rate || !(tk->i_rate * CLOCK_FREQ / tk->i_scale) )
486 {
487 free( tk );
488 continue;
489 }
490
491 switch( p_strh->i_type )
492 {
493 case( AVIFOURCC_auds ):
494 {
495 es_format_Init( &tk->fmt, AUDIO_ES, 0 );
496
497 if( p_auds->p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
498 p_auds->p_wf->cbSize >= sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX) )
499 {
500 WAVEFORMATEXTENSIBLE *p_wfe = (WAVEFORMATEXTENSIBLE *)p_auds->p_wf;
501 tk->fmt.i_codec = AVI_FourccGetCodec( AUDIO_ES, p_wfe->SubFormat.Data1 );
502 }
503 else
504 tk->fmt.i_codec = AVI_FourccGetCodec( AUDIO_ES, p_auds->p_wf->wFormatTag );
505
506 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
507 if( tk->i_blocksize == 0 )
508 {
509 if( p_auds->p_wf->wFormatTag == 1 )
510 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
511 else
512 tk->i_blocksize = 1;
513 }
514 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
515 {
516 msg_Warn( p_demux, "track[%u] samplesize=%u and blocksize=%u are not equal."
517 "Using blocksize as a workaround.",
518 i, tk->i_samplesize, tk->i_blocksize );
519 tk->i_samplesize = tk->i_blocksize;
520 }
521
522 /* fix VBR decoding */
523 if( tk->fmt.i_codec == VLC_CODEC_VORBIS ||
524 tk->fmt.i_codec == VLC_CODEC_FLAC )
525 {
526 tk->i_blocksize = 0;
527 }
528
529 if ( tk->fmt.i_codec == VLC_CODEC_MP4A )
530 {
531 tk->i_samplesize = 0; /* ADTS/AAC VBR */
532 }
533
534 /* Fix broken scale/rate */
535 if ( tk->fmt.i_codec == VLC_CODEC_ADPCM_IMA_WAV &&
536 tk->i_samplesize && tk->i_samplesize > tk->i_rate )
537 {
538 tk->i_scale = 1017;
539 tk->i_rate = p_auds->p_wf->nSamplesPerSec;
540 }
541
542 /* From libavformat */
543 /* Fix broken sample size (which is mp2 num samples / frame) #12722 */
544 if( tk->fmt.i_codec == VLC_CODEC_MPGA &&
545 tk->i_samplesize == 1152 && p_auds->p_wf->nBlockAlign == 1152 )
546 {
547 p_auds->p_wf->nBlockAlign = tk->i_samplesize = 0;
548 }
549
550 tk->fmt.audio.i_channels = p_auds->p_wf->nChannels;
551 tk->fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
552 tk->fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
553 tk->fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
554 tk->fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
555 tk->fmt.b_packetized = !tk->i_blocksize;
556
557 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0, true );
558 if( p_info )
559 {
560 int i_chunk = AVIFOURCC_IAS1 + ((i - 1) << 24);
561 avi_chunk_STRING_t *p_lang = AVI_ChunkFind( p_info, i_chunk, 0, false );
562 if( p_lang != NULL && p_lang->p_str != NULL )
563 tk->fmt.psz_language = FromACP( p_lang->p_str );
564 }
565
566 msg_Dbg( p_demux,
567 "stream[%u] audio(0x%x - %s) %d channels %dHz %dbits",
568 i, p_auds->p_wf->wFormatTag,
569 vlc_fourcc_GetDescription(AUDIO_ES, tk->fmt.i_codec),
570 p_auds->p_wf->nChannels,
571 p_auds->p_wf->nSamplesPerSec,
572 p_auds->p_wf->wBitsPerSample );
573
574 const size_t i_cboff = sizeof(WAVEFORMATEX);
575 const size_t i_incboff = ( p_auds->p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE ) ?
576 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX): 0;
577 if( p_auds->i_chunk_size >= i_cboff + p_auds->p_wf->cbSize &&
578 p_auds->p_wf->cbSize > i_incboff )
579 {
580 int i_extra = p_auds->p_wf->cbSize - i_incboff;
581 tk->fmt.p_extra = malloc( i_extra );
582 if( unlikely(tk->fmt.p_extra == NULL) )
583 {
584 es_format_Clean( &tk->fmt );
585 free( tk );
586 goto error;
587 }
588 tk->fmt.i_extra = i_extra;
589 memcpy( tk->fmt.p_extra, ((uint8_t *)(&p_auds->p_wf[1])) + i_incboff, i_extra );
590 }
591 break;
592 }
593
594 case( AVIFOURCC_vids ):
595 {
596 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
597 {
598 msg_Dbg( p_demux, "stream[%u] subtitles", i );
599 es_format_Init( &tk->fmt, SPU_ES, p_vids->p_bih->biCompression );
600 break;
601 }
602
603 es_format_Init( &tk->fmt, VIDEO_ES,
604 AVI_FourccGetCodec( VIDEO_ES, p_vids->p_bih->biCompression ) );
605
606 if( ParseBitmapInfoHeader( p_vids->p_bih, p_vids->i_chunk_size, &tk->fmt,
607 &tk->bihprops ) != VLC_SUCCESS )
608 {
609 es_format_Clean( &tk->fmt );
610 free( tk );
611 goto error;
612 }
613
614 if( tk->fmt.i_codec == VLC_CODEC_MP4V &&
615 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
616 {
617 tk->fmt.i_codec =
618 tk->fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
619 }
620
621 if( IsQNAPCodec( tk->fmt.i_codec ) )
622 tk->fmt.b_packetized = false;
623
624 tk->i_samplesize = 0;
625 tk->fmt.video.i_frame_rate = tk->i_rate;
626 tk->fmt.video.i_frame_rate_base = tk->i_scale;
627
628 avi_chunk_vprp_t *p_vprp = AVI_ChunkFind( p_strl, AVIFOURCC_vprp, 0, false );
629 if( p_vprp )
630 {
631 uint32_t i_frame_aspect_ratio = p_vprp->i_frame_aspect_ratio;
632 if( p_vprp->i_video_format_token >= 1 &&
633 p_vprp->i_video_format_token <= 4 )
634 i_frame_aspect_ratio = 0x00040003;
635 tk->fmt.video.i_sar_num = ((i_frame_aspect_ratio >> 16) & 0xffff) *
636 tk->fmt.video.i_height;
637 tk->fmt.video.i_sar_den = ((i_frame_aspect_ratio >> 0) & 0xffff) *
638 tk->fmt.video.i_width;
639 }
640
641 msg_Dbg( p_demux, "stream[%u] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
642 i, (char*)&p_vids->p_bih->biCompression,
643 p_vids->p_bih->biWidth,
644 (p_vids->p_bih->biHeight <= INT_MAX) ? p_vids->p_bih->biHeight
645 : -1 * p_vids->p_bih->biHeight,
646 p_vids->p_bih->biBitCount,
647 (float)tk->i_rate/(float)tk->i_scale );
648 break;
649 }
650
651 case( AVIFOURCC_txts):
652 msg_Dbg( p_demux, "stream[%u] subtitle attachment", i );
653 AVI_ExtractSubtitle( p_demux, i, p_strl, p_strn );
654 free( tk );
655 continue;
656
657 case( AVIFOURCC_iavs):
658 case( AVIFOURCC_ivas):
659 msg_Dbg( p_demux, "stream[%u] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
660 es_format_Init( &tk->fmt, VIDEO_ES, AVI_FourccGetCodec( VIDEO_ES, p_strh->i_handler ) );
661 tk->i_samplesize = 0;
662 tk->i_dv_audio_rate = tk->fmt.i_codec == VLC_CODEC_DV ? -1 : 0;
663
664 tk->fmt.video.i_visible_width =
665 tk->fmt.video.i_width = p_avih->i_width;
666 tk->fmt.video.i_visible_height =
667 tk->fmt.video.i_height = p_avih->i_height;
668 break;
669
670 case( AVIFOURCC_mids):
671 msg_Dbg( p_demux, "stream[%u] midi is UNSUPPORTED", i );
672 /* fall through */
673
674 default:
675 msg_Warn( p_demux, "stream[%u] unknown type %4.4s", i, (char *)&p_strh->i_type );
676 free( tk );
677 continue;
678 }
679 tk->fmt.i_id = i;
680 if( p_strn && p_strn->p_str )
681 tk->fmt.psz_description = FromACP( p_strn->p_str );
682 tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
683 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
684 }
685
686 if( p_sys->i_track <= 0 )
687 {
688 msg_Err( p_demux, "no valid track" );
689 goto error;
690 }
691
692 i_do_index = var_InheritInteger( p_demux, "avi-index" );
693 if( i_do_index == 1 ) /* Always fix */
694 {
695 aviindex:
696 if( p_sys->b_fastseekable )
697 {
698 AVI_IndexCreate( p_demux );
699 }
700 else if( p_sys->b_seekable )
701 {
702 AVI_IndexLoad( p_demux );
703 }
704 else
705 {
706 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
707 }
708 }
709 else if( p_sys->b_seekable )
710 {
711 AVI_IndexLoad( p_demux );
712 }
713
714 /* *** movie length in vlc_tick_t *** */
715 p_sys->i_length = AVI_MovieGetLength( p_demux );
716
717 /* Check the index completeness */
718 unsigned int i_idx_totalframes = 0;
719 for( unsigned int i = 0; i < p_sys->i_track; i++ )
720 {
721 const avi_track_t *tk = p_sys->track[i];
722 if( tk->fmt.i_cat == VIDEO_ES && tk->idx.p_entry )
723 i_idx_totalframes = __MAX(i_idx_totalframes, tk->idx.i_size);
724 }
725 if( i_idx_totalframes != p_avih->i_totalframes &&
726 p_sys->i_length < VLC_TICK_FROM_US( p_avih->i_totalframes *
727 p_avih->i_microsecperframe ) )
728 {
729 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
730 "approximative or will exhibit strange behavior" );
731 if( (i_do_index == 0 || i_do_index == 3) && !b_index )
732 {
733 if( !p_sys->b_fastseekable ) {
734 b_index = true;
735 goto aviindex;
736 }
737 if( i_do_index == 0 )
738 {
739 const char *psz_msg = _(
740 "Because this file index is broken or missing, "
741 "seeking will not work correctly.\n"
742 "VLC won't repair your file but can temporary fix this "
743 "problem by building an index in memory.\n"
744 "This step might take a long time on a large file.\n"
745 "What do you want to do?");
746 switch( vlc_dialog_wait_question( p_demux,
747 VLC_DIALOG_QUESTION_NORMAL,
748 _("Do not play"),
749 _("Build index then play"),
750 _("Play as is"),
751 _("Broken or missing Index"),
752 "%s", psz_msg ) )
753 {
754 case 0:
755 b_aborted = true;
756 goto error;
757 case 1:
758 b_index = true;
759 msg_Dbg( p_demux, "Fixing AVI index" );
760 goto aviindex;
761 }
762 }
763 else
764 {
765 b_index = true;
766 msg_Dbg( p_demux, "Fixing AVI index" );
767 goto aviindex;
768 }
769 }
770 }
771
772 /* fix some BeOS MediaKit generated file */
773 for( unsigned i = 0 ; i < p_sys->i_track; i++ )
774 {
775 avi_track_t *tk = p_sys->track[i];
776 avi_chunk_list_t *p_strl;
777 avi_chunk_strf_auds_t *p_auds;
778
779 if( tk->fmt.i_cat != AUDIO_ES )
780 {
781 continue;
782 }
783 if( tk->idx.i_size < 1 ||
784 tk->i_scale != 1 ||
785 tk->i_samplesize != 0 )
786 {
787 continue;
788 }
789 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, tk->fmt.i_id, true );
790 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0, false );
791
792 if( p_auds &&
793 p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
794 tk->i_rate == p_auds->p_wf->nSamplesPerSec )
795 {
796 int64_t i_track_length =
797 tk->idx.p_entry[tk->idx.i_size-1].i_length +
798 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal;
799 vlc_tick_t i_length = VLC_TICK_FROM_US( p_avih->i_totalframes *
800 p_avih->i_microsecperframe );
801
802 if( i_length == 0 )
803 {
804 msg_Warn( p_demux, "track[%u] cannot be fixed (BeOS MediaKit generated)", i );
805 continue;
806 }
807 tk->i_samplesize = 1;
808 tk->i_rate = i_track_length * CLOCK_FREQ / i_length;
809 msg_Warn( p_demux, "track[%u] fixed with rate=%u scale=%u (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
810 }
811 }
812
813 if( p_sys->b_seekable )
814 {
815 /* we have read all chunk so go back to movi */
816 if( vlc_stream_Seek( p_demux->s, p_movi->i_chunk_pos ) )
817 goto error;
818 }
819 /* Skip movi header */
820 if( vlc_stream_Read( p_demux->s, NULL, 12 ) < 12 )
821 goto error;
822
823 p_sys->i_movi_begin = p_movi->i_chunk_pos;
824 return VLC_SUCCESS;
825
826 error:
827 Close( p_this );
828 return b_aborted ? VLC_ETIMEOUT : VLC_EGENERIC;
829 }
830
831 /*****************************************************************************
832 * ReadFrame: Reads frame, using stride if necessary
833 *****************************************************************************/
834
835 static block_t * ReadFrame( demux_t *p_demux, const avi_track_t *tk,
836 const unsigned int i_header, const int i_size )
837 {
838 block_t *p_frame = vlc_stream_Block( p_demux->s, __EVEN( i_size ) );
839 if ( !p_frame ) return p_frame;
840
841 if( i_size % 2 ) /* read was padded on word boundary */
842 {
843 p_frame->i_buffer--;
844 }
845
846 if( i_header >= p_frame->i_buffer || tk->bihprops.i_stride > INT32_MAX - 3 )
847 {
848 p_frame->i_buffer = 0;
849 return p_frame;
850 }
851
852 /* skip header */
853 p_frame->p_buffer += i_header;
854 p_frame->i_buffer -= i_header;
855
856 const unsigned int i_stride_bytes = (tk->bihprops.i_stride + 3) & ~3;
857
858 if ( !tk->bihprops.i_stride || !i_stride_bytes )
859 return p_frame;
860
861 if( p_frame->i_buffer < i_stride_bytes )
862 {
863 p_frame->i_buffer = 0;
864 return p_frame;
865 }
866
867 if( !tk->bihprops.b_flipped )
868 {
869 const uint8_t *p_src = p_frame->p_buffer + i_stride_bytes;
870 const uint8_t *p_end = p_frame->p_buffer + p_frame->i_buffer;
871 uint8_t *p_dst = p_frame->p_buffer + tk->bihprops.i_stride;
872
873 p_frame->i_buffer = tk->bihprops.i_stride;
874
875 while ( p_src + i_stride_bytes <= p_end )
876 {
877 memmove( p_dst, p_src, tk->bihprops.i_stride );
878 p_src += i_stride_bytes;
879 p_dst += tk->bihprops.i_stride;
880 p_frame->i_buffer += tk->bihprops.i_stride;
881 }
882 }
883 else
884 {
885 block_t *p_flippedframe = block_Alloc( p_frame->i_buffer );
886 if ( !p_flippedframe )
887 {
888 block_Release( p_frame );
889 return NULL;
890 }
891
892 unsigned int i_lines = p_frame->i_buffer / i_stride_bytes;
893 const uint8_t *p_src = p_frame->p_buffer + i_lines * i_stride_bytes;
894 uint8_t *p_dst = p_flippedframe->p_buffer;
895
896 p_flippedframe->i_buffer = 0;
897
898 while ( i_lines-- > 0 )
899 {
900 p_src -= i_stride_bytes;
901 memcpy( p_dst, p_src, tk->bihprops.i_stride );
902 p_dst += tk->bihprops.i_stride;
903 p_flippedframe->i_buffer += tk->bihprops.i_stride;
904 }
905
906 block_Release( p_frame );
907 p_frame = p_flippedframe;
908 }
909
910 return p_frame;
911 }
912
913 /*****************************************************************************
914 * SendFrame: Sends frame to ES and does payload processing
915 *****************************************************************************/
916 static void AVI_SendFrame( demux_t *p_demux, avi_track_t *tk, block_t *p_frame )
917 {
918 if( tk->fmt.i_cat != VIDEO_ES )
919 p_frame->i_dts = p_frame->i_pts;
920 else
921 {
922 p_frame->i_dts = p_frame->i_pts;
923 p_frame->i_pts = VLC_TICK_INVALID;
924 }
925
926 if( tk->i_dv_audio_rate )
927 AVI_DvHandleAudio( p_demux, tk, p_frame );
928
929 /* Strip QNAP header */
930 if( IsQNAPCodec( tk->fmt.i_codec ) )
931 {
932 if( p_frame->i_buffer <= QNAP_HEADER_SIZE )
933 {
934 block_Release( p_frame );
935 return;
936 }
937
938 p_frame->i_buffer -= QNAP_HEADER_SIZE;
939 p_frame->p_buffer += QNAP_HEADER_SIZE;
940 }
941
942 if( tk->i_next_block_flags )
943 {
944 p_frame->i_flags = tk->i_next_block_flags;
945 tk->i_next_block_flags = 0;
946 }
947
948 if( tk->p_es )
949 es_out_Send( p_demux->out, tk->p_es, p_frame );
950 else
951 block_Release( p_frame );
952 }
953
954 /*****************************************************************************
955 * Demux_Seekable: reads and demuxes data packets for stream seekable
956 *****************************************************************************
957 * AVIDemux: reads and demuxes data packets
958 *****************************************************************************
959 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
960 *****************************************************************************/
961 typedef struct
962 {
963 bool b_ok;
964
965 int64_t i_toread;
966
967 int64_t i_posf; /* where we will read :
968 if i_idxposb == 0 : begining of chunk (+8 to acces data)
969 else : point on data directly */
970 } avi_track_toread_t;
971
972 static int Demux_Seekable( demux_t *p_demux )
973 {
974 demux_sys_t *p_sys = p_demux->p_sys;
975
976 unsigned int i_track_count = 0;
977 unsigned int i_track;
978 /* cannot be more than 100 stream (dcXX or wbXX) */
979 avi_track_toread_t toread[100];
980
981
982 /* detect new selected/unselected streams */
983 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
984 {
985 avi_track_t *tk = p_sys->track[i_track];
986 bool b = false;
987
988 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
989 if( tk->p_es_dv_audio )
990 {
991 bool b_extra = false;
992 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es_dv_audio, &b_extra );
993 b |= b_extra;
994 }
995 if( b && !tk->b_activated )
996 {
997 if( p_sys->b_seekable)
998 {
999 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
1000 }
1001 tk->b_activated = true;
1002 }
1003 else if( !b && tk->b_activated )
1004 {
1005 tk->b_activated = false;
1006 }
1007 if( b )
1008 {
1009 i_track_count++;
1010 }
1011 }
1012
1013 if( i_track_count <= 0 )
1014 {
1015 p_sys->i_time += p_sys->i_read_increment;
1016 if( p_sys->i_length != 0 )
1017 {
1018 if( p_sys->i_time >= p_sys->i_length )
1019 return VLC_DEMUXER_EOF;
1020 return VLC_DEMUXER_SUCCESS;
1021 }
1022 msg_Warn( p_demux, "no track selected, exiting..." );
1023 return VLC_DEMUXER_EOF;
1024 }
1025
1026 /* wait for the good time */
1027 es_out_SetPCR( p_demux->out, VLC_TICK_0 + p_sys->i_time );
1028 p_sys->i_time += p_sys->i_read_increment;
1029
1030 /* init toread */
1031 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
1032 {
1033 avi_track_t *tk = p_sys->track[i_track];
1034
1035 toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
1036 if( tk->i_idxposc < tk->idx.i_size )
1037 {
1038 toread[i_track].i_posf = tk->idx.p_entry[tk->i_idxposc].i_pos;
1039 if( tk->i_idxposb > 0 )
1040 {
1041 toread[i_track].i_posf += 8 + tk->i_idxposb;
1042 }
1043 }
1044 else
1045 {
1046 toread[i_track].i_posf = -1;
1047 }
1048
1049 vlc_tick_t i_dpts = p_sys->i_time - AVI_GetPTS( tk );
1050
1051 if( tk->i_samplesize )
1052 {
1053 toread[i_track].i_toread = AVI_PTSToByte( tk, i_dpts );
1054 }
1055 else if ( i_dpts > VLC_TICK_FROM_SEC(-2) ) /* don't send a too early dts (low fps video) */
1056 {
1057 int64_t i_chunks_count = AVI_PTSToChunk( tk, i_dpts );
1058 if( i_dpts > 0 && AVI_GetDPTS( tk, i_chunks_count ) < i_dpts )
1059 {
1060 /* AVI code is crap. toread is either bytes, or here, chunk count.
1061 * That does not even work when reading amount < scale / rate */
1062 i_chunks_count++;
1063 }
1064 toread[i_track].i_toread = i_chunks_count;
1065 }
1066 else
1067 toread[i_track].i_toread = -1;
1068 }
1069
1070 for( ;; )
1071 {
1072 avi_track_t *tk;
1073 bool b_done;
1074 block_t *p_frame;
1075 int64_t i_pos;
1076 unsigned int i;
1077 size_t i_size;
1078
1079 /* search for first chunk to be read */
1080 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
1081 {
1082 if( !toread[i].b_ok ||
1083 ( p_sys->b_fastseekable && p_sys->b_interleaved &&
1084 AVI_GetDPTS( p_sys->track[i], toread[i].i_toread ) <= -p_sys->i_read_increment ) )
1085 {
1086 continue;
1087 }
1088
1089 if( toread[i].i_toread > 0 )
1090 {
1091 b_done = false; /* not yet finished */
1092
1093 if( toread[i].i_posf > 0 )
1094 {
1095 if( i_pos == -1 || i_pos > toread[i].i_posf )
1096 {
1097 i_track = i;
1098 i_pos = toread[i].i_posf;
1099 }
1100 }
1101 }
1102 }
1103
1104 if( b_done )
1105 {
1106 for( i = 0; i < p_sys->i_track; i++ )
1107 {
1108 if( toread[i].b_ok && toread[i].i_toread >= 0 )
1109 return VLC_DEMUXER_SUCCESS;
1110 }
1111 msg_Warn( p_demux, "all tracks have failed, exiting..." );
1112 return VLC_DEMUXER_EOF;
1113 }
1114
1115 if( i_pos == -1 )
1116 {
1117 unsigned short i_loop_count = 0;
1118
1119 /* no valid index, we will parse directly the stream
1120 * in case we fail we will disable all finished stream */
1121 if( p_sys->b_seekable && p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1122 {
1123 if (vlc_stream_Seek(p_demux->s, p_sys->i_movi_lastchunk_pos))
1124 return VLC_DEMUXER_EGENERIC;
1125
1126 if( AVI_PacketNext( p_demux ) )
1127 {
1128 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1129 }
1130 }
1131 else
1132 {
1133 if (vlc_stream_Seek(p_demux->s, p_sys->i_movi_begin + 12))
1134 return VLC_DEMUXER_EGENERIC;
1135 }
1136
1137 for( ;; )
1138 {
1139 avi_packet_t avi_pk;
1140
1141 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1142 {
1143 msg_Warn( p_demux,
1144 "cannot get packet header, track disabled" );
1145 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1146 }
1147 if( avi_pk.i_stream >= p_sys->i_track ||
1148 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1149 {
1150 if( AVI_PacketNext( p_demux ) )
1151 {
1152 msg_Warn( p_demux,
1153 "cannot skip packet, track disabled" );
1154 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1155 }
1156
1157 if( !++i_loop_count )
1158 msg_Warn( p_demux, "don't seem to find any data..." );
1159 continue;
1160 }
1161 else
1162 {
1163 i_track = avi_pk.i_stream;
1164 tk = p_sys->track[i_track];
1165
1166 /* add this chunk to the index */
1167 avi_entry_t index;
1168 index.i_id = avi_pk.i_fourcc;
1169 index.i_flags = AVI_GetKeyFlag(tk->fmt.i_codec, avi_pk.i_peek);
1170 index.i_pos = avi_pk.i_pos;
1171 index.i_length = avi_pk.i_size;
1172 index.i_lengthtotal = index.i_length;
1173 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1174
1175 /* do we will read this data ? */
1176 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -p_sys->i_read_increment )
1177 {
1178 break;
1179 }
1180 else
1181 {
1182 if( AVI_PacketNext( p_demux ) )
1183 {
1184 msg_Warn( p_demux,
1185 "cannot skip packet, track disabled" );
1186 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1187 }
1188 }
1189 }
1190 }
1191
1192 }
1193 else
1194 {
1195 if (vlc_stream_Seek(p_demux->s, i_pos))
1196 return VLC_DEMUXER_EGENERIC;
1197 }
1198
1199 /* Set the track to use */
1200 tk = p_sys->track[i_track];
1201
1202 /* read thoses data */
1203 if( tk->i_samplesize )
1204 {
1205 int64_t i_toread;
1206
1207 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1208 {
1209 if( tk->i_samplesize > 1 )
1210 {
1211 i_toread = tk->i_samplesize;
1212 }
1213 else
1214 {
1215 i_toread = AVI_PTSToByte( tk, VLC_TICK_FROM_MS(20) );
1216 i_toread = __MAX( i_toread, 100 );
1217 }
1218 }
1219 i_size = __MIN( tk->idx.p_entry[tk->i_idxposc].i_length -
1220 tk->i_idxposb,
1221 (size_t) i_toread );
1222 }
1223 else
1224 {
1225 i_size = tk->idx.p_entry[tk->i_idxposc].i_length;
1226 }
1227
1228 if( tk->i_idxposb == 0 )
1229 {
1230 i_size += 8; /* need to read and skip header */
1231 }
1232
1233 if( ( p_frame = ReadFrame( p_demux, tk,
1234 ( tk->i_idxposb == 0 ) ? 8 : 0, i_size ) )==NULL )
1235 {
1236 msg_Warn( p_demux, "failed reading data" );
1237 tk->b_eof = false;
1238 toread[i_track].b_ok = false;
1239 continue;
1240 }
1241
1242 p_frame->i_pts = VLC_TICK_0 + AVI_GetPTS( tk );
1243 if( tk->idx.p_entry[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1244 {
1245 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1246 }
1247 else
1248 {
1249 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1250 }
1251
1252 /* read data */
1253 if( tk->i_samplesize )
1254 {
1255 if( tk->i_idxposb == 0 )
1256 {
1257 i_size -= 8;
1258 }
1259 toread[i_track].i_toread -= i_size;
1260 tk->i_idxposb += i_size;
1261 if( tk->i_idxposb >=
1262 tk->idx.p_entry[tk->i_idxposc].i_length )
1263 {
1264 tk->i_idxposb = 0;
1265 tk->i_idxposc++;
1266 }
1267 }
1268 else
1269 {
1270 int i_length = tk->idx.p_entry[tk->i_idxposc].i_length;
1271
1272 tk->i_idxposc++;
1273 if( tk->fmt.i_cat == AUDIO_ES )
1274 {
1275 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1276 }
1277 toread[i_track].i_toread--;
1278 }
1279
1280 if( tk->i_idxposc < tk->idx.i_size)
1281 {
1282 toread[i_track].i_posf =
1283 tk->idx.p_entry[tk->i_idxposc].i_pos;
1284 if( tk->i_idxposb > 0 )
1285 {
1286 toread[i_track].i_posf += 8 + tk->i_idxposb;
1287 }
1288
1289 }
1290 else
1291 {
1292 toread[i_track].i_posf = -1;
1293 }
1294
1295 AVI_SendFrame( p_demux, tk, p_frame );
1296 }
1297 }
1298
1299
1300 /*****************************************************************************
1301 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1302 *****************************************************************************
1303 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1304 *****************************************************************************/
1305 static int Demux_UnSeekable( demux_t *p_demux )
1306 {
1307 demux_sys_t *p_sys = p_demux->p_sys;
1308 avi_track_t *p_stream_master = NULL;
1309 unsigned int i_stream;
1310 unsigned int i_packet;
1311
1312 es_out_SetPCR( p_demux->out, VLC_TICK_0 + p_sys->i_time );
1313
1314 /* *** find master stream for data packet skipping algo *** */
1315 /* *** -> first video, if any, or first audio ES *** */
1316 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1317 {
1318 avi_track_t *tk = p_sys->track[i_stream];
1319 bool b;
1320
1321 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1322 if( tk->p_es_dv_audio )
1323 {
1324 bool b_extra;
1325 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es_dv_audio, &b_extra );
1326 b |= b_extra;
1327 }
1328
1329 if( b )
1330 {
1331 if( tk->fmt.i_cat == VIDEO_ES )
1332 {
1333 p_stream_master = tk;
1334 break;
1335 }
1336 else if( !p_stream_master )
1337 {
1338 p_stream_master = tk;
1339 }
1340 }
1341 }
1342
1343 if( !p_stream_master )
1344 {
1345 if( p_sys->i_track )
1346 {
1347 p_stream_master = p_sys->track[0];
1348 }
1349 else
1350 {
1351 msg_Warn( p_demux, "no more stream selected" );
1352 return VLC_DEMUXER_EOF;
1353 }
1354 }
1355
1356 p_sys->i_time = AVI_GetPTS( p_stream_master );
1357
1358 for( i_packet = 0; i_packet < 10; i_packet++)
1359 {
1360 avi_packet_t avi_pk;
1361
1362 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1363 {
1364 return VLC_DEMUXER_EOF;
1365 }
1366
1367 if( avi_pk.i_stream >= p_sys->i_track ||
1368 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1369 {
1370 /* we haven't found an audio or video packet:
1371 * - we have seek, found first next packet
1372 * - others packets could be found, skip them
1373 */
1374 switch( avi_pk.i_fourcc )
1375 {
1376 case AVIFOURCC_JUNK:
1377 case AVIFOURCC_LIST:
1378 case AVIFOURCC_RIFF:
1379 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1380 case AVIFOURCC_idx1:
1381 if( p_sys->b_odml )
1382 {
1383 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1384 }
1385 return VLC_DEMUXER_EOF;
1386 default:
1387 msg_Warn( p_demux,
1388 "seems to have lost position @%"PRIu64", resync",
1389 vlc_stream_Tell(p_demux->s) );
1390 if( AVI_PacketSearch( p_demux ) )
1391 {
1392 msg_Err( p_demux, "resync failed" );
1393 return VLC_DEMUXER_EGENERIC;
1394 }
1395 }
1396 }
1397 else
1398 {
1399 avi_track_t *p_stream = p_sys->track[avi_pk.i_stream];
1400 /* check for time */
1401 if( p_stream == p_stream_master ||
1402 llabs( AVI_GetPTS( p_stream ) -
1403 AVI_GetPTS( p_stream_master ) )< VLC_TICK_FROM_SEC(2) )
1404 {
1405 /* load it and send to decoder */
1406 block_t *p_frame = ReadFrame( p_demux, p_stream, 8, avi_pk.i_size + 8 ) ;
1407 if( p_frame == NULL )
1408 {
1409 return VLC_DEMUXER_EGENERIC;
1410 }
1411 p_frame->i_pts = VLC_TICK_0 + AVI_GetPTS( p_stream );
1412
1413 AVI_SendFrame( p_demux, p_stream, p_frame );
1414 }
1415 else
1416 {
1417 if( AVI_PacketNext( p_demux ) )
1418 {
1419 return VLC_DEMUXER_EOF;
1420 }
1421 }
1422
1423 /* *** update stream time position *** */
1424 if( p_stream->i_samplesize )
1425 {
1426 p_stream->i_idxposb += avi_pk.i_size;
1427 }
1428 else
1429 {
1430 if( p_stream->fmt.i_cat == AUDIO_ES )
1431 {
1432 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1433 }
1434 p_stream->i_idxposc++;
1435 }
1436
1437 }
1438 }
1439
1440 return VLC_DEMUXER_SUCCESS;
1441 }
1442
1443 /*****************************************************************************
1444 * Seek: goto to i_date or i_percent
1445 *****************************************************************************/
1446 static int Seek( demux_t *p_demux, vlc_tick_t i_date, double f_ratio, bool b_accurate )
1447 {
1448 demux_sys_t *p_sys = p_demux->p_sys;
1449 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %2.2f%%",
1450 SEC_FROM_VLC_TICK(i_date), f_ratio * 100 );
1451
1452 if( p_sys->b_seekable )
1453 {
1454 uint64_t i_pos_backup = vlc_stream_Tell( p_demux->s );
1455
1456 /* Check and lazy load indexes if it was not done (not fastseekable) */
1457 if ( !p_sys->b_indexloaded && ( p_sys->i_avih_flags & AVIF_HASINDEX ) )
1458 {
1459 avi_chunk_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
1460 if (unlikely( !p_riff ))
1461 return VLC_EGENERIC;
1462
1463 int i_ret = AVI_ChunkFetchIndexes( p_demux->s, p_riff );
1464 if ( i_ret )
1465 {
1466 /* Go back to position before index failure */
1467 if (vlc_stream_Tell(p_demux->s) != i_pos_backup
1468 && vlc_stream_Seek(p_demux->s, i_pos_backup))
1469 return VLC_EGENERIC;
1470
1471 if ( p_sys->i_avih_flags & AVIF_MUSTUSEINDEX )
1472 return VLC_EGENERIC;
1473 }
1474 else AVI_IndexLoad( p_demux );
1475
1476 p_sys->b_indexloaded = true; /* we don't want to try each time */
1477 }
1478
1479 if( p_sys->i_length == 0 )
1480 {
1481 avi_track_t *p_stream = NULL;
1482 unsigned i_stream = 0;
1483 uint64_t i_pos;
1484
1485 if ( !p_sys->i_movi_lastchunk_pos && /* set when index is successfully loaded */
1486 ! ( p_sys->i_avih_flags & AVIF_ISINTERLEAVED ) )
1487 {
1488 msg_Err( p_demux, "seeking without index at %2.2f%%"
1489 " only works for interleaved files", f_ratio * 100 );
1490 goto failandresetpos;
1491 }
1492 /* use i_percent to create a true i_date */
1493 if( f_ratio >= 1.0 )
1494 {
1495 msg_Warn( p_demux, "cannot seek so far !" );
1496 goto failandresetpos;
1497 }
1498 f_ratio = __MAX( f_ratio, 0 );
1499
1500 /* try to find chunk that is at i_percent or the file */
1501 i_pos = __MAX( f_ratio * stream_Size( p_demux->s ),
1502 p_sys->i_movi_begin );
1503 /* search first selected stream (and prefer non-EOF ones) */
1504 for( unsigned i = 0; i < p_sys->i_track; i++ )
1505 {
1506 avi_track_t *p_track = p_sys->track[i];
1507 if( !p_track->b_activated )
1508 continue;
1509
1510 p_stream = p_track;
1511 i_stream = i;
1512 if( !p_track->b_eof )
1513 break;
1514 }
1515 if( p_stream == NULL )
1516 {
1517 msg_Warn( p_demux, "cannot find any selected stream" );
1518 goto failandresetpos;
1519 }
1520
1521 /* be sure that the index exist */
1522 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1523 {
1524 msg_Warn( p_demux, "cannot seek" );
1525 goto failandresetpos;
1526 }
1527
1528 while( i_pos >= p_stream->idx.p_entry[p_stream->i_idxposc].i_pos +
1529 p_stream->idx.p_entry[p_stream->i_idxposc].i_length + 8 )
1530 {
1531 /* search after i_idxposc */
1532 if( AVI_StreamChunkSet( p_demux,
1533 i_stream, p_stream->i_idxposc + 1 ) )
1534 {
1535 msg_Warn( p_demux, "cannot seek" );
1536 goto failandresetpos;
1537 }
1538 }
1539
1540 i_date = AVI_GetPTS( p_stream );
1541 /* TODO better support for i_samplesize != 0 */
1542 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1543 }
1544
1545 /* */
1546 vlc_tick_t i_wanted = i_date;
1547 vlc_tick_t i_start = i_date;
1548 /* Do a 2 pass seek, first with video (can seek ahead due to keyframes),
1549 so we can seek audio to the same starting time */
1550 for(int i=0; i<2; i++)
1551 {
1552 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1553 {
1554 avi_track_t *p_stream = p_sys->track[i_stream];
1555
1556 if( !p_stream->b_activated )
1557 continue;
1558
1559 if( (i==0 && p_stream->fmt.i_cat != VIDEO_ES) ||
1560 (i!=0 && p_stream->fmt.i_cat == VIDEO_ES) )
1561 continue;
1562
1563 p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_wanted ) != 0;
1564 if( !p_stream->b_eof )
1565 {
1566 p_stream->i_next_block_flags |= BLOCK_FLAG_DISCONTINUITY;
1567
1568 if( p_stream->fmt.i_cat == AUDIO_ES || p_stream->fmt.i_cat == VIDEO_ES )
1569 i_start = __MIN(i_start, AVI_GetPTS( p_stream ));
1570
1571 if( i == 0 && p_stream->fmt.i_cat == VIDEO_ES )
1572 i_wanted = i_start;
1573 }
1574 }
1575 }
1576 p_sys->i_time = i_start;
1577 es_out_SetPCR( p_demux->out, VLC_TICK_0 + p_sys->i_time );
1578 if( b_accurate )
1579 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, VLC_TICK_0 + i_date );
1580 msg_Dbg( p_demux, "seek: %"PRId64" seconds", SEC_FROM_VLC_TICK(p_sys->i_time) );
1581 return VLC_SUCCESS;
1582
1583 failandresetpos:
1584 /* Go back to position before index failure */
1585 if ( vlc_stream_Tell( p_demux->s ) - i_pos_backup )
1586 vlc_stream_Seek( p_demux->s, i_pos_backup );
1587
1588 return VLC_EGENERIC;
1589 }
1590 else
1591 {
1592 msg_Err( p_demux, "shouldn't yet be executed" );
1593 return VLC_EGENERIC;
1594 }
1595 }
1596
1597 /*****************************************************************************
1598 * Control:
1599 *****************************************************************************/
1600 static double ControlGetPosition( demux_t *p_demux )
1601 {
1602 demux_sys_t *p_sys = p_demux->p_sys;
1603
1604 if( p_sys->i_length != 0 )
1605 {
1606 return (double)p_sys->i_time / (double)p_sys->i_length;
1607 }
1608 else if( stream_Size( p_demux->s ) > 0 )
1609 {
1610 double i64 = (uint64_t)vlc_stream_Tell( p_demux->s );
1611 return i64 / stream_Size( p_demux->s );
1612 }
1613 return 0.0;
1614 }
1615
1616 static int Control( demux_t *p_demux, int i_query, va_list args )
1617 {
1618 demux_sys_t *p_sys = p_demux->p_sys;
1619 double f, *pf;
1620 vlc_tick_t i64;
1621 bool b;
1622 vlc_meta_t *p_meta;
1623
1624 switch( i_query )
1625 {
1626 case DEMUX_CAN_SEEK:
1627 *va_arg( args, bool * ) = p_sys->b_seekable;
1628 return VLC_SUCCESS;
1629
1630 case DEMUX_GET_POSITION:
1631 pf = va_arg( args, double * );
1632 *pf = ControlGetPosition( p_demux );
1633 return VLC_SUCCESS;
1634 case DEMUX_SET_POSITION:
1635 f = va_arg( args, double );
1636 b = va_arg( args, int );
1637 if ( !p_sys->b_seekable )
1638 {
1639 return VLC_EGENERIC;
1640 }
1641 else
1642 {
1643 i64 = f * p_sys->i_length;
1644 return Seek( p_demux, i64, f, b );
1645 }
1646
1647 case DEMUX_GET_TIME:
1648 *va_arg( args, vlc_tick_t * ) = p_sys->i_time;
1649 return VLC_SUCCESS;
1650
1651 case DEMUX_SET_TIME:
1652 {
1653 f = 0;
1654
1655 i64 = va_arg( args, vlc_tick_t );
1656 b = va_arg( args, int );
1657 if( !p_sys->b_seekable )
1658 {
1659 return VLC_EGENERIC;
1660 }
1661 else if( p_sys->i_length != 0 )
1662 {
1663 f = (double)i64 / p_sys->i_length;
1664 }
1665 else if( p_sys->i_time > 0 )
1666 {
1667 f = ControlGetPosition( p_demux ) *
1668 (double) i64 / (double)p_sys->i_time;
1669 }
1670 return Seek( p_demux, i64, f, b );
1671 }
1672 case DEMUX_GET_LENGTH:
1673 *va_arg( args, vlc_tick_t * ) = p_sys->i_length;
1674 return VLC_SUCCESS;
1675
1676 case DEMUX_GET_FPS:
1677 pf = va_arg( args, double * );
1678 *pf = 0.0;
1679 for( unsigned i = 0; i < p_sys->i_track; i++ )
1680 {
1681 avi_track_t *tk = p_sys->track[i];
1682 if( tk->fmt.i_cat == VIDEO_ES && tk->i_scale > 0)
1683 {
1684 *pf = (float)tk->i_rate / (float)tk->i_scale;
1685 break;
1686 }
1687 }
1688 return VLC_SUCCESS;
1689
1690 case DEMUX_GET_META:
1691 p_meta = va_arg( args, vlc_meta_t * );
1692 vlc_meta_Merge( p_meta, p_sys->meta );
1693 return VLC_SUCCESS;
1694
1695 case DEMUX_GET_ATTACHMENTS:
1696 {
1697 if( p_sys->i_attachment <= 0 )
1698 return VLC_EGENERIC;
1699
1700 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1701 int *pi_int = va_arg( args, int * );
1702
1703 *ppp_attach = calloc( p_sys->i_attachment, sizeof(**ppp_attach) );
1704 if( likely(*ppp_attach) )
1705 {
1706 *pi_int = p_sys->i_attachment;
1707 for( unsigned i = 0; i < p_sys->i_attachment; i++ )
1708 (*ppp_attach)[i] = vlc_input_attachment_Hold( p_sys->attachment[i] );
1709 return VLC_SUCCESS;
1710 }
1711 return VLC_EGENERIC;
1712 }
1713
1714 case DEMUX_CAN_PAUSE:
1715 case DEMUX_SET_PAUSE_STATE:
1716 case DEMUX_CAN_CONTROL_PACE:
1717 case DEMUX_GET_PTS_DELAY:
1718 return demux_vaControlHelper( p_demux->s, 0, -1, 0, 1, i_query, args );
1719
1720 default:
1721 return VLC_EGENERIC;
1722 }
1723 }
1724
1725 /*****************************************************************************
1726 * Function to convert pts to chunk or byte
1727 *****************************************************************************/
1728
1729 static int64_t AVI_Rescale( vlc_tick_t i_value, uint32_t i_timescale, uint32_t i_newscale )
1730 {
1731 /* TODO: replace (and mp4) with better global helper (recursive checks) */
1732 if( i_timescale == i_newscale )
1733 return i_value;
1734
1735 if( (i_value >= 0 && i_value <= INT64_MAX / i_newscale) ||
1736 (i_value < 0 && i_value >= INT64_MIN / i_newscale) )
1737 return i_value * i_newscale / i_timescale;
1738
1739 /* overflow */
1740 int64_t q = i_value / i_timescale;
1741 int64_t r = i_value % i_timescale;
1742 return q * i_newscale + r * i_newscale / i_timescale;
1743 }
1744
1745 static int64_t AVI_PTSToChunk( avi_track_t *tk, vlc_tick_t i_pts )
1746 {
1747 if( !tk->i_scale )
1748 return 0;
1749
1750 i_pts = AVI_Rescale( i_pts, tk->i_scale, tk->i_rate );
1751 return SEC_FROM_VLC_TICK(i_pts);
1752 }
1753
1754 static int64_t AVI_PTSToByte( avi_track_t *tk, vlc_tick_t i_pts )
1755 {
1756 if( !tk->i_scale || !tk->i_samplesize )
1757 return 0;
1758
1759 i_pts = AVI_Rescale( i_pts, tk->i_scale, tk->i_rate );
1760 return i_pts / CLOCK_FREQ * tk->i_samplesize;
1761 }
1762
1763 static vlc_tick_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1764 {
1765 vlc_tick_t i_dpts = 0;
1766
1767 if( !tk->i_rate )
1768 return 0;
1769
1770 if( !tk->i_scale )
1771 return 0;
1772
1773 i_dpts = AVI_Rescale( CLOCK_FREQ * i_count, tk->i_rate, tk->i_scale );
1774
1775 if( tk->i_samplesize )
1776 {
1777 return i_dpts / tk->i_samplesize;
1778 }
1779 return i_dpts;
1780 }
1781
1782 static vlc_tick_t AVI_GetPTS( avi_track_t *tk )
1783 {
1784 /* Lookup samples index */
1785 if( tk->i_samplesize && tk->idx.i_size )
1786 {
1787 int64_t i_count = 0;
1788 unsigned int idx = tk->i_idxposc;
1789
1790 /* we need a valid entry we will emulate one */
1791 if( idx >= tk->idx.i_size )
1792 {
1793 /* use the last entry */
1794 idx = tk->idx.i_size - 1;
1795 i_count = tk->idx.p_entry[idx].i_lengthtotal
1796 + tk->idx.p_entry[idx].i_length;
1797 }
1798 else
1799 {
1800 i_count = tk->idx.p_entry[idx].i_lengthtotal;
1801 }
1802 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1803 }
1804
1805 if( tk->fmt.i_cat == AUDIO_ES )
1806 return AVI_GetDPTS( tk, tk->i_blockno );
1807 else
1808 return AVI_GetDPTS( tk, tk->i_idxposc );
1809 }
1810
1811 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1812 {
1813 demux_sys_t *p_sys = p_demux->p_sys;
1814 avi_packet_t avi_pk;
1815 unsigned short i_loop_count = 0;
1816
1817 /* find first chunk of i_stream that isn't in index */
1818
1819 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1820 {
1821 if (vlc_stream_Seek(p_demux->s, p_sys->i_movi_lastchunk_pos))
1822 return VLC_EGENERIC;
1823 if( AVI_PacketNext( p_demux ) )
1824 {
1825 return VLC_EGENERIC;
1826 }
1827 }
1828 else
1829 {
1830 if (vlc_stream_Seek(p_demux->s, p_sys->i_movi_begin + 12))
1831 return VLC_EGENERIC;
1832 }
1833
1834 for( ;; )
1835 {
1836 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1837 {
1838 msg_Warn( p_demux, "cannot get packet header" );
1839 return VLC_EGENERIC;
1840 }
1841 if( avi_pk.i_stream >= p_sys->i_track ||
1842 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1843 {
1844 if( AVI_PacketNext( p_demux ) )
1845 {
1846 return VLC_EGENERIC;
1847 }
1848
1849 if( !++i_loop_count )
1850 msg_Warn( p_demux, "don't seem to find any data..." );
1851 }
1852 else
1853 {
1854 avi_track_t *tk_pk = p_sys->track[avi_pk.i_stream];
1855
1856 /* add this chunk to the index */
1857 avi_entry_t index;
1858 index.i_id = avi_pk.i_fourcc;
1859 index.i_flags = AVI_GetKeyFlag(tk_pk->fmt.i_codec, avi_pk.i_peek);
1860 index.i_pos = avi_pk.i_pos;
1861 index.i_length = avi_pk.i_size;
1862 index.i_lengthtotal = index.i_length;
1863 avi_index_Append( &tk_pk->idx, &p_sys->i_movi_lastchunk_pos, &index );
1864
1865 if( avi_pk.i_stream == i_stream )
1866 {
1867 return VLC_SUCCESS;
1868 }
1869
1870 if( AVI_PacketNext( p_demux ) )
1871 {
1872 return VLC_EGENERIC;
1873 }
1874 }
1875 }
1876 }
1877
1878 /* be sure that i_ck will be a valid index entry */
1879 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1880 unsigned int i_ck )
1881 {
1882 demux_sys_t *p_sys = p_demux->p_sys;
1883 avi_track_t *p_stream = p_sys->track[i_stream];
1884
1885 p_stream->i_idxposc = i_ck;
1886 p_stream->i_idxposb = 0;
1887
1888 if( i_ck >= p_stream->idx.i_size )
1889 {
1890 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1891 do
1892 {
1893 p_stream->i_idxposc++;
1894 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1895 {
1896 return VLC_EGENERIC;
1897 }
1898
1899 } while( p_stream->i_idxposc < i_ck );
1900 }
1901
1902 return VLC_SUCCESS;
1903 }
1904
1905 /* XXX FIXME up to now, we assume that all chunk are one after one */
1906 static int AVI_StreamBytesSet( demux_t *p_demux,
1907 unsigned int i_stream,
1908 uint64_t i_byte )
1909 {
1910 demux_sys_t *p_sys = p_demux->p_sys;
1911 avi_track_t *p_stream = p_sys->track[i_stream];
1912
1913 if( ( p_stream->idx.i_size > 0 )
1914 &&( i_byte < p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_lengthtotal +
1915 p_stream->idx.p_entry[p_stream->idx.i_size - 1].i_length ) )
1916 {
1917 /* index is valid to find the ck */
1918 /* uses dichototmie to be fast enougth */
1919 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->idx.i_size - 1 );
1920 int i_idxmax = p_stream->idx.i_size;
1921 int i_idxmin = 0;
1922 for( ;; )
1923 {
1924 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal > i_byte )
1925 {
1926 i_idxmax = i_idxposc ;
1927 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1928 }
1929 else
1930 {
1931 if( p_stream->idx.p_entry[i_idxposc].i_lengthtotal +
1932 p_stream->idx.p_entry[i_idxposc].i_length <= i_byte)
1933 {
1934 i_idxmin = i_idxposc ;
1935 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1936 }
1937 else
1938 {
1939 p_stream->i_idxposc = i_idxposc;
1940 p_stream->i_idxposb = i_byte -
1941 p_stream->idx.p_entry[i_idxposc].i_lengthtotal;
1942 return VLC_SUCCESS;
1943 }
1944 }
1945 }
1946
1947 }
1948 else
1949 {
1950 p_stream->i_idxposc = p_stream->idx.i_size - 1;
1951 p_stream->i_idxposb = 0;
1952 do
1953 {
1954 p_stream->i_idxposc++;
1955 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1956 {
1957 return VLC_EGENERIC;
1958 }
1959
1960 } while( p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal +
1961 p_stream->idx.p_entry[p_stream->i_idxposc].i_length <= i_byte );
1962
1963 p_stream->i_idxposb = i_byte -
1964 p_stream->idx.p_entry[p_stream->i_idxposc].i_lengthtotal;
1965 return VLC_SUCCESS;
1966 }
1967 }
1968
1969 static int AVI_TrackSeek( demux_t *p_demux,
1970 int i_stream,
1971 vlc_tick_t i_date )
1972 {
1973 demux_sys_t *p_sys = p_demux->p_sys;
1974 avi_track_t *tk = p_sys->track[i_stream];
1975
1976 #define p_stream p_sys->track[i_stream]
1977 vlc_tick_t i_oldpts;
1978
1979 i_oldpts = AVI_GetPTS( p_stream );
1980
1981 if( !p_stream->i_samplesize )
1982 {
1983 if( AVI_StreamChunkSet( p_demux,
1984 i_stream,
1985 AVI_PTSToChunk( p_stream, i_date ) ) )
1986 {
1987 return VLC_EGENERIC;
1988 }
1989
1990 if( p_stream->fmt.i_cat == AUDIO_ES )
1991 {
1992 unsigned int i;
1993 tk->i_blockno = 0;
1994 for( i = 0; i < tk->i_idxposc; i++ )
1995 {
1996 if( tk->i_blocksize > 0 )
1997 {
1998 tk->i_blockno += ( tk->idx.p_entry[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1999 }
2000 else
2001 {
2002 tk->i_blockno++;
2003 }
2004 }
2005 }
2006
2007 msg_Dbg( p_demux,
2008 "old:%"PRId64" %s new %"PRId64,
2009 i_oldpts,
2010 i_oldpts > i_date ? ">" : "<",
2011 i_date );
2012
2013 if( p_stream->fmt.i_cat == VIDEO_ES )
2014 {
2015 /* search key frame */
2016 //if( i_date < i_oldpts || 1 )
2017 {
2018 while( p_stream->i_idxposc > 0 &&
2019 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
2020 AVIIF_KEYFRAME ) )
2021 {
2022 if( AVI_StreamChunkSet( p_demux,
2023 i_stream,
2024 p_stream->i_idxposc - 1 ) )
2025 {
2026 return VLC_EGENERIC;
2027 }
2028 }
2029 }
2030 #if 0
2031 else
2032 {
2033 while( p_stream->i_idxposc < p_stream->idx.i_size &&
2034 !( p_stream->idx.p_entry[p_stream->i_idxposc].i_flags &
2035 AVIIF_KEYFRAME ) )
2036 {
2037 if( AVI_StreamChunkSet( p_demux,
2038 i_stream,
2039 p_stream->i_idxposc + 1 ) )
2040 {
2041 return VLC_EGENERIC;
2042 }
2043 }
2044 }
2045 #endif
2046 }
2047 }
2048 else
2049 {
2050 if( AVI_StreamBytesSet( p_demux,
2051 i_stream,
2052 AVI_PTSToByte( p_stream, i_date ) ) )
2053 {
2054 return VLC_EGENERIC;
2055 }
2056 }
2057 return VLC_SUCCESS;
2058 #undef p_stream
2059 }
2060
2061 /****************************************************************************
2062 * Return true if it's a key frame
2063 ****************************************************************************/
2064 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
2065 {
2066 switch( i_fourcc )
2067 {
2068 case VLC_CODEC_DIV1:
2069 /* we have:
2070 * startcode: 0x00000100 32bits
2071 * framenumber ? 5bits
2072 * piture type 0(I),1(P) 2bits
2073 */
2074 if( GetDWBE( p_byte ) != 0x00000100 )
2075 {
2076 /* it's not an msmpegv1 stream, strange...*/
2077 return AVIIF_KEYFRAME;
2078 }
2079 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
2080
2081 case VLC_CODEC_DIV2:
2082 case VLC_CODEC_DIV3:
2083 case VLC_CODEC_WMV1:
2084 /* we have
2085 * picture type 0(I),1(P) 2bits
2086 */
2087 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
2088 case VLC_CODEC_MP4V:
2089 /* we should find first occurrence of 0x000001b6 (32bits)
2090 * startcode: 0x000001b6 32bits
2091 * piture type 0(I),1(P) 2bits
2092 */
2093 if( GetDWBE( p_byte ) != 0x000001b6 )
2094 {
2095 /* not true , need to find the first VOP header */
2096 return AVIIF_KEYFRAME;
2097 }
2098 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
2099
2100 default:
2101 /* I can't do it, so say yes */
2102 return AVIIF_KEYFRAME;
2103 }
2104 }
2105
2106 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
2107 {
2108 switch( i_cat )
2109 {
2110 case AUDIO_ES:
2111 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
2112 return i_codec;
2113 case VIDEO_ES:
2114 return vlc_fourcc_GetCodec( i_cat, i_codec );
2115 default:
2116 return VLC_CODEC_UNKNOWN;
2117 }
2118 }
2119
2120 /****************************************************************************
2121 *
2122 ****************************************************************************/
2123 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
2124 unsigned int *pi_number,
2125 enum es_format_category_e *pi_type )
2126 {
2127 int c1, c2;
2128
2129 c1 = ((uint8_t *)&i_id)[0];
2130 c2 = ((uint8_t *)&i_id)[1];
2131
2132 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
2133 {
2134 *pi_number = 100; /* > max stream number */
2135 *pi_type = UNKNOWN_ES;
2136 }
2137 else
2138 {
2139 *pi_number = (c1 - '0') * 10 + (c2 - '0' );
2140 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
2141 {
2142 case AVITWOCC_wb:
2143 *pi_type = AUDIO_ES;
2144 break;
2145 case AVITWOCC_dc:
2146 case AVITWOCC_db:
2147 case AVITWOCC_AC:
2148 *pi_type = VIDEO_ES;
2149 break;
2150 case AVITWOCC_tx:
2151 case AVITWOCC_sb:
2152 *pi_type = SPU_ES;
2153 break;
2154 case AVITWOCC_pc:
2155 *pi_type = IGNORE_ES;
2156 break;
2157 default:
2158 *pi_type = UNKNOWN_ES;
2159 break;
2160 }
2161 }
2162 }
2163
2164 /****************************************************************************
2165 *
2166 ****************************************************************************/
2167 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
2168 {
2169 const uint8_t *p_peek;
2170
2171 if( vlc_stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
2172 {
2173 return VLC_EGENERIC;
2174 }
2175 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
2176 p_pk->i_size = GetDWLE( p_peek + 4 );
2177 p_pk->i_pos = vlc_stream_Tell( p_demux->s );
2178 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
2179 {
2180 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
2181 p_peek[10], p_peek[11] );
2182 }
2183 else
2184 {
2185 p_pk->i_type = 0;
2186 }
2187
2188 memcpy( p_pk->i_peek, p_peek + 8, 8 );
2189
2190 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2191 return VLC_SUCCESS;
2192 }
2193
2194 static int AVI_PacketNext( demux_t *p_demux )
2195 {
2196 avi_packet_t avi_ck;
2197 size_t i_skip = 0;
2198
2199 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2200 {
2201 return VLC_EGENERIC;
2202 }
2203
2204 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2205 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2206 {
2207 i_skip = 12;
2208 }
2209 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2210 avi_ck.i_type == AVIFOURCC_AVIX )
2211 {
2212 i_skip = 24;
2213 }
2214 else
2215 {
2216 if( avi_ck.i_size > UINT32_MAX - 9 )
2217 return VLC_EGENERIC;
2218 i_skip = __EVEN( avi_ck.i_size ) + 8;
2219 }
2220
2221 if( i_skip > SSIZE_MAX )
2222 return VLC_EGENERIC;
2223
2224 ssize_t i_ret = vlc_stream_Read( p_demux->s, NULL, i_skip );
2225 if( i_ret < 0 || (size_t) i_ret != i_skip )
2226 {
2227 return VLC_EGENERIC;
2228 }
2229 return VLC_SUCCESS;
2230 }
2231
2232 static int AVI_PacketSearch( demux_t *p_demux )
2233 {
2234 demux_sys_t *p_sys = p_demux->p_sys;
2235 avi_packet_t avi_pk;
2236 unsigned short i_count = 0;
2237
2238 for( ;; )
2239 {
2240 if( vlc_stream_Read( p_demux->s, NULL, 1 ) != 1 )
2241 {
2242 return VLC_EGENERIC;
2243 }
2244 AVI_PacketGetHeader( p_demux, &avi_pk );
2245 if( avi_pk.i_stream < p_sys->i_track &&
2246 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2247 {
2248 return VLC_SUCCESS;
2249 }
2250 switch( avi_pk.i_fourcc )
2251 {
2252 case AVIFOURCC_JUNK:
2253 case AVIFOURCC_LIST:
2254 case AVIFOURCC_RIFF:
2255 case AVIFOURCC_idx1:
2256 return VLC_SUCCESS;
2257 }
2258
2259 if( !++i_count )
2260 msg_Warn( p_demux, "trying to resync..." );
2261 }
2262 }
2263
2264 /****************************************************************************
2265 * Index stuff.
2266 ****************************************************************************/
2267 static void avi_index_Init( avi_index_t *p_index )
2268 {
2269 p_index->i_size = 0;
2270 p_index->i_max = 0;
2271 p_index->p_entry = NULL;
2272 }
2273 static void avi_index_Clean( avi_index_t *p_index )
2274 {
2275 free( p_index->p_entry );
2276 }
2277 static void avi_index_Append( avi_index_t *p_index, uint64_t *pi_last_pos,
2278 avi_entry_t *p_entry )
2279 {
2280 /* Update last chunk position */
2281 if( *pi_last_pos < p_entry->i_pos )
2282 *pi_last_pos = p_entry->i_pos;
2283
2284 /* add the entry */
2285 if( p_index->i_size >= p_index->i_max )
2286 {
2287 p_index->i_max += 16384;
2288 p_index->p_entry = realloc_or_free( p_index->p_entry,
2289 p_index->i_max * sizeof( *p_index->p_entry ) );
2290 if( !p_index->p_entry )
2291 return;
2292 }
2293 /* calculate cumulate length */
2294 if( p_index->i_size > 0 )
2295 {
2296 p_entry->i_lengthtotal =
2297 p_index->p_entry[p_index->i_size - 1].i_length +
2298 p_index->p_entry[p_index->i_size - 1].i_lengthtotal;
2299 }
2300 else
2301 {
2302 p_entry->i_lengthtotal = 0;
2303 }
2304
2305 p_index->p_entry[p_index->i_size++] = *p_entry;
2306 }
2307
2308 static int AVI_IndexFind_idx1( demux_t *p_demux,
2309 avi_chunk_idx1_t **pp_idx1,
2310 uint64_t *pi_offset )
2311 {
2312 demux_sys_t *p_sys = p_demux->p_sys;
2313
2314 avi_chunk_list_t *p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true);
2315 avi_chunk_idx1_t *p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0, false);
2316
2317 if( !p_idx1 )
2318 {
2319 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2320 return VLC_EGENERIC;
2321 }
2322 *pp_idx1 = p_idx1;
2323
2324 /* The offset in the index should be from the start of the movi content,
2325 * but some broken files use offset from the start of the file. Just
2326 * checking the offset of the first packet is not enough as some files
2327 * has unused chunk at the beginning of the movi content.
2328 */
2329 avi_chunk_list_t *p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
2330 if( !p_movi )
2331 return VLC_EGENERIC;
2332 uint64_t i_first_pos = UINT64_MAX;
2333 for( unsigned i = 0; i < __MIN( p_idx1->i_entry_count, 100 ); i++ )
2334 {
2335 if ( p_idx1->entry[i].i_length > 0 )
2336 i_first_pos = __MIN( i_first_pos, p_idx1->entry[i].i_pos );
2337 }
2338
2339 const uint64_t i_movi_content = p_movi->i_chunk_pos + 8;
2340 if( i_first_pos < i_movi_content )
2341 {
2342 *pi_offset = i_movi_content;
2343 }
2344 else if( p_sys->b_seekable && i_first_pos < UINT64_MAX )
2345 {
2346 const uint8_t *p_peek;
2347 if( !vlc_stream_Seek( p_demux->s, i_movi_content + i_first_pos ) &&
2348 vlc_stream_Peek( p_demux->s, &p_peek, 4 ) >= 4 &&
2349 ( !isdigit( p_peek[0] ) || !isdigit( p_peek[1] ) ||
2350 !isalpha( p_peek[2] ) || !isalpha( p_peek[3] ) ) )
2351 *pi_offset = 0;
2352 else
2353 *pi_offset = i_movi_content;
2354
2355 if( p_idx1->i_entry_count )
2356 {
2357 /* Invalidate offset if index refers past the data section to avoid false
2358 positives when the offset equals sample size */
2359 size_t i_dataend = *pi_offset + p_idx1->entry[p_idx1->i_entry_count - 1].i_pos +
2360 p_idx1->entry[p_idx1->i_entry_count - 1].i_length;
2361 if( i_dataend > p_movi->i_chunk_pos + p_movi->i_chunk_size )
2362 *pi_offset = 0;
2363 }
2364 }
2365 else
2366 {
2367 *pi_offset = 0;
2368 }
2369
2370 return VLC_SUCCESS;
2371 }
2372
2373 static int AVI_IndexLoad_idx1( demux_t *p_demux,
2374 avi_index_t p_index[], uint64_t *pi_last_offset )
2375 {
2376 demux_sys_t *p_sys = p_demux->p_sys;
2377
2378 avi_chunk_idx1_t *p_idx1;
2379 uint64_t i_offset;
2380 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2381 return VLC_EGENERIC;
2382
2383 p_sys->b_indexloaded = true;
2384
2385 for( unsigned i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2386 {
2387 enum es_format_category_e i_cat;
2388 unsigned i_stream;
2389
2390 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2391 &i_stream,
2392 &i_cat );
2393 if( i_stream < p_sys->i_track &&
2394 (i_cat == p_sys->track[i_stream]->fmt.i_cat || i_cat == UNKNOWN_ES ) )
2395 {
2396 avi_entry_t index;
2397 index.i_id = p_idx1->entry[i_index].i_fourcc;
2398 index.i_flags = p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2399 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2400 index.i_length = p_idx1->entry[i_index].i_length;
2401 index.i_lengthtotal = index.i_length;
2402
2403 avi_index_Append( &p_index[i_stream], pi_last_offset, &index );
2404 }
2405 }
2406
2407 #ifdef AVI_DEBUG
2408 for( unsigned i_index = 0; i_index< p_idx1->i_entry_count && i_index < p_sys->i_track; i_index++ )
2409 {
2410 for( unsigned i = 0; i < p_index[i_index].i_size; i++ )
2411 {
2412 vlc_tick_t i_length;
2413 if( p_sys->track[i_index]->i_samplesize )
2414 {
2415 i_length = AVI_GetDPTS( p_sys->track[i_index],
2416 p_index[i_index].p_entry[i].i_lengthtotal );
2417 }
2418 else
2419 {
2420 i_length = AVI_GetDPTS( p_sys->track[i_index], i );
2421 }
2422 msg_Dbg( p_demux, "index stream %d @%ld time %ld", i_index,
2423 p_index[i_index].p_entry[i].i_pos, i_length );
2424 }
2425 }
2426 #endif
2427 return VLC_SUCCESS;
2428 }
2429
2430 static void __Parse_indx( demux_t *p_demux, avi_index_t *p_index, uint64_t *pi_max_offset,
2431 avi_chunk_indx_t *p_indx )
2432 {
2433 demux_sys_t *p_sys = p_demux->p_sys;
2434 avi_entry_t index;
2435
2436 p_sys->b_indexloaded = true;
2437
2438 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2439 if( p_indx->i_indexsubtype == 0 )
2440 {
2441 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2442 {
2443 index.i_id = p_indx->i_id;
2444 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2445 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2446 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2447 index.i_lengthtotal = index.i_length;
2448
2449 avi_index_Append( p_index, pi_max_offset, &index );
2450 }
2451 }
2452 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2453 {
2454 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2455 {
2456 index.i_id = p_indx->i_id;
2457 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2458 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2459 index.i_length = p_indx->idx.field[i].i_size;
2460 index.i_lengthtotal = index.i_length;
2461
2462 avi_index_Append( p_index, pi_max_offset, &index );
2463 }
2464 }
2465 else
2466 {
2467 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2468 }
2469 }
2470
2471 static void AVI_IndexLoad_indx( demux_t *p_demux,
2472 avi_index_t p_index[], uint64_t *pi_last_offset )
2473 {
2474 demux_sys_t *p_sys = p_demux->p_sys;
2475
2476 avi_chunk_list_t *p_riff;
2477 avi_chunk_list_t *p_hdrl;
2478
2479 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true);
2480 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0, true );
2481
2482 for( unsigned i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2483 {
2484 avi_chunk_list_t *p_strl;
2485 avi_chunk_indx_t *p_indx;
2486
2487 #define p_stream p_sys->track[i_stream]
2488 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream, true );
2489 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0, false );
2490
2491 if( !p_indx )
2492 {
2493 if( p_sys->b_odml )
2494 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2495 "file?)" );
2496 continue;
2497 }
2498
2499 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2500 {
2501 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, p_indx );
2502 }
2503 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2504 {
2505 if ( !p_sys->b_seekable )
2506 return;
2507 avi_chunk_t ck_sub;
2508 for( unsigned i = 0; i < p_indx->i_entriesinuse; i++ )
2509 {
2510 if( vlc_stream_Seek( p_demux->s,
2511 p_indx->idx.super[i].i_offset ) ||
2512 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2513 {
2514 break;
2515 }
2516 if( ck_sub.common.i_chunk_fourcc == AVIFOURCC_indx &&
2517 ck_sub.indx.i_indextype == AVI_INDEX_OF_CHUNKS )
2518 __Parse_indx( p_demux, &p_index[i_stream], pi_last_offset, &ck_sub.indx );
2519 AVI_ChunkClean( p_demux->s, &ck_sub );
2520 }
2521 }
2522 else
2523 {
2524 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2525 }
2526 #undef p_stream
2527 }
2528 }
2529
2530 static void AVI_IndexLoad( demux_t *p_demux )
2531 {
2532 demux_sys_t *p_sys = p_demux->p_sys;
2533
2534 /* Load indexes */
2535 assert( p_sys->i_track <= 100 );
2536 avi_index_t p_idx_indx[p_sys->i_track];
2537 avi_index_t p_idx_idx1[p_sys->i_track];
2538 for( unsigned i = 0; i < p_sys->i_track; i++ )
2539 {
2540 avi_index_Init( &p_idx_indx[i] );
2541 avi_index_Init( &p_idx_idx1[i] );
2542 }
2543 uint64_t i_indx_last_pos = p_sys->i_movi_lastchunk_pos;
2544 uint64_t i_idx1_last_pos = p_sys->i_movi_lastchunk_pos;
2545
2546 AVI_IndexLoad_indx( p_demux, p_idx_indx, &i_indx_last_pos );
2547 if( !p_sys->b_odml )
2548 AVI_IndexLoad_idx1( p_demux, p_idx_idx1, &i_idx1_last_pos );
2549
2550 /* Select the longest index */
2551 for( unsigned i = 0; i < p_sys->i_track; i++ )
2552 {
2553 if( p_idx_indx[i].i_size > p_idx_idx1[i].i_size )
2554 {
2555 msg_Dbg( p_demux, "selected ODML index for stream[%u]", i );
2556 free(p_sys->track[i]->idx.p_entry);
2557 p_sys->track[i]->idx = p_idx_indx[i];
2558 avi_index_Clean( &p_idx_idx1[i] );
2559 }
2560 else
2561 {
2562 msg_Dbg( p_demux, "selected standard index for stream[%u]", i );
2563 free(p_sys->track[i]->idx.p_entry);
2564 p_sys->track[i]->idx = p_idx_idx1[i];
2565 avi_index_Clean( &p_idx_indx[i] );
2566 }
2567 }
2568 p_sys->i_movi_lastchunk_pos = __MAX( i_indx_last_pos, i_idx1_last_pos );
2569
2570 for( unsigned i = 0; i < p_sys->i_track; i++ )
2571 {
2572 avi_index_t *p_index = &p_sys->track[i]->idx;
2573
2574 /* Fix key flag */
2575 bool b_key = false;
2576 for( unsigned j = 0; !b_key && j < p_index->i_size; j++ )
2577 b_key = p_index->p_entry[j].i_flags & AVIIF_KEYFRAME;
2578 if( !b_key )
2579 {
2580 msg_Err( p_demux, "no key frame set for track %u", i );
2581 for( unsigned j = 0; j < p_index->i_size; j++ )
2582 p_index->p_entry[j].i_flags |= AVIIF_KEYFRAME;
2583 }
2584
2585 /* */
2586 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2587 i, p_index->i_size );
2588 }
2589 }
2590
2591 static void AVI_IndexCreate( demux_t *p_demux )
2592 {
2593 demux_sys_t *p_sys = p_demux->p_sys;
2594
2595 avi_chunk_list_t *p_riff;
2596 avi_chunk_list_t *p_movi;
2597
2598 unsigned int i_stream;
2599 uint32_t i_movi_end;
2600
2601 vlc_tick_t i_dialog_update;
2602 vlc_dialog_id *p_dialog_id = NULL;
2603
2604 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0, true );
2605 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0, true );
2606
2607 if( !p_movi )
2608 {
2609 msg_Err( p_demux, "cannot find p_movi" );
2610 return;
2611 }
2612
2613 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2614 avi_index_Init( &p_sys->track[i_stream]->idx );
2615
2616 i_movi_end = __MIN( (uint32_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2617 stream_Size( p_demux->s ) );
2618
2619 vlc_stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2620 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2621
2622
2623 /* Only show dialog if AVI is > 10MB */
2624 i_dialog_update = vlc_tick_now();
2625 if( stream_Size( p_demux->s ) > 10000000 )
2626 {
2627 p_dialog_id =
2628 vlc_dialog_display_progress( p_demux, false, 0.0, _("Cancel"),
2629 _("Broken or missing AVI Index"),
2630 _("Fixing AVI Index...") );
2631 }
2632
2633 for( ;; )
2634 {
2635 avi_packet_t pk;
2636
2637 /* Don't update/check dialog too often */
2638 if( p_dialog_id != NULL && vlc_tick_now() - i_dialog_update > VLC_TICK_FROM_MS(100) )
2639 {
2640 if( vlc_dialog_is_cancelled( p_demux, p_dialog_id ) )
2641 break;
2642
2643 double f_current = vlc_stream_Tell( p_demux->s );
2644 double f_size = stream_Size( p_demux->s );
2645 double f_pos = f_current / f_size;
2646 vlc_dialog_update_progress( p_demux, p_dialog_id, f_pos );
2647
2648 i_dialog_update = vlc_tick_now();
2649 }
2650
2651 if( AVI_PacketGetHeader( p_demux, &pk ) )
2652 break;
2653
2654 if( pk.i_stream < p_sys->i_track &&
2655 pk.i_cat == p_sys->track[pk.i_stream]->fmt.i_cat )
2656 {
2657 avi_track_t *tk = p_sys->track[pk.i_stream];
2658
2659 avi_entry_t index;
2660 index.i_id = pk.i_fourcc;
2661 index.i_flags = AVI_GetKeyFlag(tk->fmt.i_codec, pk.i_peek);
2662 index.i_pos = pk.i_pos;
2663 index.i_length = pk.i_size;
2664 index.i_lengthtotal = pk.i_size;
2665 avi_index_Append( &tk->idx, &p_sys->i_movi_lastchunk_pos, &index );
2666 }
2667 else
2668 {
2669 switch( pk.i_fourcc )
2670 {
2671 case AVIFOURCC_idx1:
2672 if( p_sys->b_odml )
2673 {
2674 avi_chunk_list_t *p_sysx;
2675 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2676 AVIFOURCC_RIFF, 1, true );
2677
2678 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2679 if( !p_sysx || vlc_stream_Seek( p_demux->s,
2680 p_sysx->i_chunk_pos + 24 ) )
2681 goto print_stat;
2682 break;
2683 }
2684 goto print_stat;
2685
2686 case AVIFOURCC_RIFF:
2687 msg_Dbg( p_demux, "new RIFF chunk found" );
2688 break;
2689
2690 case AVIFOURCC_rec:
2691 case AVIFOURCC_JUNK:
2692 break;
2693
2694 default:
2695 msg_Warn( p_demux, "need resync, probably broken avi" );
2696 if( AVI_PacketSearch( p_demux ) )
2697 {
2698 msg_Warn( p_demux, "lost sync, abord index creation" );
2699 goto print_stat;
2700 }
2701 }
2702 }
2703
2704 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2705 AVI_PacketNext( p_demux ) )
2706 {
2707 break;
2708 }
2709 }
2710
2711 print_stat:
2712 if( p_dialog_id != NULL )
2713 vlc_dialog_release( p_demux, p_dialog_id );
2714
2715 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2716 {
2717 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2718 i_stream, p_sys->track[i_stream]->idx.i_size );
2719 }
2720 }
2721
2722 /* */
2723 static void AVI_MetaLoad( demux_t *p_demux,
2724 avi_chunk_list_t *p_riff, avi_chunk_avih_t *p_avih )
2725 {
2726 demux_sys_t *p_sys = p_demux->p_sys;
2727
2728 vlc_meta_t *p_meta = p_sys->meta = vlc_meta_New();
2729 if( !p_meta )
2730 return;
2731
2732 char buffer[200];
2733 snprintf( buffer, sizeof(buffer), "%s%s%s%s",
2734 p_avih->i_flags&AVIF_HASINDEX ? " HAS_INDEX" : "",
2735 p_avih->i_flags&AVIF_MUSTUSEINDEX ? " MUST_USE_INDEX" : "",
2736 p_avih->i_flags&AVIF_ISINTERLEAVED ? " IS_INTERLEAVED" : "",
2737 p_avih->i_flags&AVIF_TRUSTCKTYPE ? " TRUST_CKTYPE" : "" );
2738 vlc_meta_SetSetting( p_meta, buffer );
2739
2740 avi_chunk_list_t *p_info = AVI_ChunkFind( p_riff, AVIFOURCC_INFO, 0, true );
2741 if( !p_info )
2742 return;
2743
2744 static const struct {
2745 vlc_fourcc_t i_id;
2746 int i_type;
2747 } p_dsc[] = {
2748 { AVIFOURCC_IART, vlc_meta_Artist },
2749 { AVIFOURCC_ICMT, vlc_meta_Description },
2750 { AVIFOURCC_ICOP, vlc_meta_Copyright },
2751 { AVIFOURCC_IGNR, vlc_meta_Genre },
2752 { AVIFOURCC_INAM, vlc_meta_Title },
2753 { AVIFOURCC_ICRD, vlc_meta_Date },
2754 { AVIFOURCC_ILNG, vlc_meta_Language },
2755 { AVIFOURCC_IRTD, vlc_meta_Rating },
2756 { AVIFOURCC_IWEB, vlc_meta_URL },
2757 { AVIFOURCC_IPRT, vlc_meta_TrackNumber },
2758 { AVIFOURCC_IFRM, vlc_meta_TrackTotal },
2759 { 0, -1 }
2760 };
2761 for( int i = 0; p_dsc[i].i_id != 0; i++ )
2762 {
2763 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_dsc[i].i_id, 0, false );
2764 if( !p_strz || !p_strz->p_str )
2765 continue;
2766 char *psz_value = FromACP( p_strz->p_str );
2767 if( !psz_value )
2768 continue;
2769
2770 if( *psz_value )
2771 vlc_meta_Set( p_meta, p_dsc[i].i_type, psz_value );
2772 free( psz_value );
2773 }
2774
2775 static const vlc_fourcc_t p_extra[] = {
2776 AVIFOURCC_IARL, AVIFOURCC_ICMS, AVIFOURCC_ICRP, AVIFOURCC_IDIM, AVIFOURCC_IDPI,
2777 AVIFOURCC_IENG, AVIFOURCC_IKEY, AVIFOURCC_ILGT, AVIFOURCC_IMED, AVIFOURCC_IPLT,
2778 AVIFOURCC_IPRD, AVIFOURCC_ISBJ, AVIFOURCC_ISFT, AVIFOURCC_ISHP, AVIFOURCC_ISRC,
2779 AVIFOURCC_ISRF, AVIFOURCC_ITCH, AVIFOURCC_ISMP, AVIFOURCC_IDIT, AVIFOURCC_ISGN,
2780 AVIFOURCC_IWRI, AVIFOURCC_IPRO, AVIFOURCC_ICNM, AVIFOURCC_IPDS, AVIFOURCC_IEDT,
2781 AVIFOURCC_ICDS, AVIFOURCC_IMUS, AVIFOURCC_ISTD, AVIFOURCC_IDST, AVIFOURCC_ICNT,
2782 AVIFOURCC_ISTR, 0,
2783 };
2784
2785 for( int i = 0; p_extra[i] != 0; i++ )
2786 {
2787 avi_chunk_STRING_t *p_strz = AVI_ChunkFind( p_info, p_extra[i], 0, false );
2788 if( !p_strz || !p_strz->p_str )
2789 continue;
2790 char *psz_value = FromACP( p_strz->p_str );
2791 if( !psz_value )
2792 continue;
2793
2794 if( *psz_value )
2795 vlc_meta_AddExtra( p_meta, p_strz->p_type, psz_value );
2796 free( psz_value );
2797 }
2798 }
2799
2800 static void AVI_DvHandleAudio( demux_t *p_demux, avi_track_t *tk, block_t *p_frame )
2801 {
2802 size_t i_offset = 80 * 6 + 80 * 16 * 3 + 3;
2803 if( p_frame->i_buffer < i_offset + 5 )
2804 return;
2805
2806 if( p_frame->p_buffer[i_offset] != 0x50 )
2807 return;
2808
2809 es_format_t fmt;
2810 dv_get_audio_format( &fmt, &p_frame->p_buffer[i_offset + 1] );
2811
2812 if( tk->p_es_dv_audio && tk->i_dv_audio_rate != (int)fmt.audio.i_rate )
2813 {
2814 es_out_Del( p_demux->out, tk->p_es_dv_audio );
2815 tk->p_es_dv_audio = NULL;
2816 }
2817
2818 if( !tk->p_es_dv_audio )
2819 {
2820 tk->p_es_dv_audio = es_out_Add( p_demux->out, &fmt );
2821 tk->i_dv_audio_rate = fmt.audio.i_rate;
2822 }
2823
2824 es_format_Clean( &fmt );
2825
2826 block_t *p_frame_audio = dv_extract_audio( p_frame );
2827 if( p_frame_audio )
2828 {
2829 if( tk->p_es_dv_audio )
2830 es_out_Send( p_demux->out, tk->p_es_dv_audio, p_frame_audio );
2831 else
2832 block_Release( p_frame_audio );
2833 }
2834 }
2835
2836 /*****************************************************************************
2837 * Subtitles
2838 *****************************************************************************/
2839 static void AVI_ExtractSubtitle( demux_t *p_demux,
2840 unsigned int i_stream,
2841 avi_chunk_list_t *p_strl,
2842 avi_chunk_STRING_t *p_strn )
2843 {
2844 demux_sys_t *p_sys = p_demux->p_sys;
2845 block_t *p_block = NULL;
2846 input_attachment_t *p_attachment = NULL;
2847 char *psz_description = NULL;
2848 avi_chunk_indx_t *p_indx = NULL;
2849
2850 if( !p_sys->b_seekable )
2851 goto exit;
2852
2853 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0, false );
2854 avi_chunk_t ck;
2855 int64_t i_position;
2856 unsigned i_size;
2857 if( p_indx )
2858 {
2859 if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES &&
2860 p_indx->i_entriesinuse > 0 )
2861 {
2862 if( vlc_stream_Seek( p_demux->s, p_indx->idx.super[0].i_offset ) ||
2863 AVI_ChunkRead( p_demux->s, &ck, NULL ) ||
2864 ck.common.i_chunk_fourcc != AVIFOURCC_indx )
2865 goto exit;
2866 p_indx = &ck.indx;
2867 }
2868
2869 if( p_indx->i_indextype != AVI_INDEX_OF_CHUNKS ||
2870 p_indx->i_entriesinuse != 1 ||
2871 p_indx->i_indexsubtype != 0 )
2872 goto exit;
2873
2874 i_position = p_indx->i_baseoffset +
2875 p_indx->idx.std[0].i_offset - 8;
2876 i_size = (p_indx->idx.std[0].i_size & 0x7fffffff) + 8;
2877 }
2878 else
2879 {
2880 avi_chunk_idx1_t *p_idx1;
2881 uint64_t i_offset;
2882
2883 if( AVI_IndexFind_idx1( p_demux, &p_idx1, &i_offset ) )
2884 goto exit;
2885
2886 i_size = 0;
2887 for( unsigned i = 0; i < p_idx1->i_entry_count; i++ )
2888 {
2889 const idx1_entry_t *e = &p_idx1->entry[i];
2890 enum es_format_category_e i_cat;
2891 unsigned i_stream_idx;
2892
2893 AVI_ParseStreamHeader( e->i_fourcc, &i_stream_idx, &i_cat );
2894 if( i_cat == SPU_ES && i_stream_idx == i_stream )
2895 {
2896 i_position = e->i_pos + i_offset;
2897 i_size = e->i_length + 8;
2898 break;
2899 }
2900 }
2901 if( i_size <= 0 )
2902 goto exit;
2903 }
2904
2905 /* */
2906 if( i_size > 10000000 )
2907 {
2908 msg_Dbg( p_demux, "Attached subtitle too big: %u", i_size );
2909 goto exit;
2910 }
2911
2912 if( vlc_stream_Seek( p_demux->s, i_position ) )
2913 goto exit;
2914 p_block = vlc_stream_Block( p_demux->s, i_size );
2915 if( !p_block )
2916 goto exit;
2917
2918 /* Parse packet header */
2919 const uint8_t *p = p_block->p_buffer;
2920 if( i_size < 8 || p[2] != 't' || p[3] != 'x' )
2921 goto exit;
2922 p += 8;
2923 i_size -= 8;
2924
2925 /* Parse subtitle chunk header */
2926 if( i_size < 11 || memcmp( p, "GAB2", 4 ) ||
2927 p[4] != 0x00 || GetWLE( &p[5] ) != 0x2 )
2928 goto exit;
2929 const unsigned i_name = GetDWLE( &p[7] );
2930 if( 11 + i_size <= i_name )
2931 goto exit;
2932 if( i_name > 0 )
2933 psz_description = FromCharset( "UTF-16LE", &p[11], i_name );
2934 p += 11 + i_name;
2935 i_size -= 11 + i_name;
2936 if( i_size < 6 || GetWLE( &p[0] ) != 0x04 )
2937 goto exit;
2938 const unsigned i_payload = GetDWLE( &p[2] );
2939 if( i_size - 6 < i_payload || i_payload == 0 )
2940 goto exit;
2941 p += 6;
2942 i_size -= 6;
2943
2944 if( !psz_description )
2945 psz_description = p_strn && p_strn->p_str ? FromACP( p_strn->p_str ) : NULL;
2946 char *psz_name;
2947 if( asprintf( &psz_name, "subtitle%d.srt", p_sys->i_attachment ) <= 0 )
2948 psz_name = NULL;
2949 p_attachment = vlc_input_attachment_New( psz_name,
2950 "application/x-srt",
2951 psz_description,
2952 p, i_payload );
2953 if( p_attachment )
2954 TAB_APPEND( p_sys->i_attachment, p_sys->attachment, p_attachment );
2955 free( psz_name );
2956
2957 exit:
2958 free( psz_description );
2959
2960 if( p_block )
2961 block_Release( p_block );
2962
2963 if( p_attachment )
2964 msg_Dbg( p_demux, "Loaded an embedded subtitle" );
2965 else
2966 msg_Warn( p_demux, "Failed to load an embedded subtitle" );
2967
2968 if( p_indx == &ck.indx )
2969 AVI_ChunkClean( p_demux->s, &ck );
2970 }
2971 /*****************************************************************************
2972 * Stream management
2973 *****************************************************************************/
2974 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2975 {
2976 demux_sys_t *p_sys = p_demux->p_sys;
2977 unsigned int i;
2978 int b_end = true;
2979
2980 for( i = 0; i < p_sys->i_track; i++ )
2981 {
2982 avi_track_t *tk = p_sys->track[i];
2983 if( tk->i_idxposc >= tk->idx.i_size )
2984 {
2985 tk->b_eof = true;
2986 }
2987 else
2988 {
2989 b_end = false;
2990 }
2991 }
2992 return( b_end );
2993 }
2994
2995 /****************************************************************************
2996 * AVI_MovieGetLength give max streams length in ticks
2997 ****************************************************************************/
2998 static vlc_tick_t AVI_MovieGetLength( demux_t *p_demux )
2999 {
3000 demux_sys_t *p_sys = p_demux->p_sys;
3001 vlc_tick_t i_maxlength = 0;
3002 unsigned int i;
3003
3004 for( i = 0; i < p_sys->i_track; i++ )
3005 {
3006 avi_track_t *tk = p_sys->track[i];
3007 vlc_tick_t i_length;
3008
3009 /* fix length for each stream */
3010 if( tk->idx.i_size < 1 || !tk->idx.p_entry )
3011 {
3012 continue;
3013 }
3014
3015 if( tk->i_samplesize )
3016 {
3017 i_length = AVI_GetDPTS( tk,
3018 tk->idx.p_entry[tk->idx.i_size-1].i_lengthtotal +
3019 tk->idx.p_entry[tk->idx.i_size-1].i_length );
3020 }
3021 else
3022 {
3023 i_length = AVI_GetDPTS( tk, tk->idx.i_size );
3024 }
3025
3026 msg_Dbg( p_demux,
3027 "stream[%d] length:%"PRId64" (based on index)",
3028 i,
3029 SEC_FROM_VLC_TICK(i_length) );
3030 i_maxlength = __MAX( i_maxlength, i_length );
3031 }
3032
3033 return i_maxlength;
3034 }
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