?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Fix description
[vlc.git] / src / input / decoder.c
blobb4beeddf7ea3ce6632c8ed263373eefdb05cacb9
1 /*****************************************************************************
2 * decoder.c: Functions for the management of decoders
3 *****************************************************************************
4 * Copyright (C) 1999-2004 the VideoLAN team
5 * $Id$
6 *
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Laurent Aimar <fenrir@via.ecp.fr>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
25
26 /*****************************************************************************
27 * Preamble
28 *****************************************************************************/
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32 #include <assert.h>
33
34 #include <vlc_common.h>
35
36 #include <vlc_block.h>
37 #include <vlc_vout.h>
38 #include <vlc_aout.h>
39 #include <vlc_sout.h>
40 #include <vlc_codec.h>
41 #include <vlc_osd.h>
42
43 #include <vlc_interface.h>
44 #include "audio_output/aout_internal.h"
45 #include "stream_output/stream_output.h"
46 #include "input_internal.h"
47
48 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
49 static void DeleteDecoder( decoder_t * );
50
51 static int DecoderThread( decoder_t * );
52 static int DecoderDecode( decoder_t * p_dec, block_t *p_block );
53
54 /* Buffers allocation callbacks for the decoders */
55 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
56 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
57
58 static picture_t *vout_new_buffer( decoder_t * );
59 static void vout_del_buffer( decoder_t *, picture_t * );
60 static void vout_link_picture( decoder_t *, picture_t * );
61 static void vout_unlink_picture( decoder_t *, picture_t * );
62
63 static subpicture_t *spu_new_buffer( decoder_t * );
64 static void spu_del_buffer( decoder_t *, subpicture_t * );
65
66 static es_format_t null_es_format;
67
68 struct decoder_owner_sys_t
69 {
70 bool b_own_thread;
71
72 int64_t i_preroll_end;
73
74 input_thread_t *p_input;
75
76 aout_instance_t *p_aout;
77 aout_input_t *p_aout_input;
78
79 vout_thread_t *p_vout;
80
81 vout_thread_t *p_spu_vout;
82 int i_spu_channel;
83
84 sout_instance_t *p_sout;
85 sout_packetizer_input_t *p_sout_input;
86
87 /* Some decoders require already packetized data (ie. not truncated) */
88 decoder_t *p_packetizer;
89
90 /* Current format in use by the output */
91 video_format_t video;
92 audio_format_t audio;
93 es_format_t sout;
94
95 /* fifo */
96 block_fifo_t *p_fifo;
97
98 /* CC */
99 bool b_cc_supported;
100 vlc_mutex_t lock_cc;
101 bool pb_cc_present[4];
102 decoder_t *pp_cc[4];
103 };
104
105 /* */
106 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
107 {
108 msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
109 "VLC probably does not support this sound or video format.",
110 (char*)&codec );
111 intf_UserFatal( p_dec, false, _("No suitable decoder module"),
112 _("VLC does not support the audio or video format \"%4.4s\". "
113 "Unfortunately there is no way for you to fix this."), (char*)&codec );
114 }
115
116 /* decoder_GetInputAttachment:
117 */
118 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
119 const char *psz_name )
120 {
121 input_attachment_t *p_attachment;
122 if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
123 return NULL;
124 return p_attachment;
125 }
126 /* decoder_GetInputAttachments:
127 */
128 int decoder_GetInputAttachments( decoder_t *p_dec,
129 input_attachment_t ***ppp_attachment,
130 int *pi_attachment )
131 {
132 return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
133 ppp_attachment, pi_attachment );
134 }
135 /* decoder_GetDisplayDate:
136 */
137 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
138 {
139 VLC_UNUSED(p_dec);
140 return i_ts;
141 }
142
143 /**
144 * Spawns a new decoder thread
145 *
146 * \param p_input the input thread
147 * \param p_es the es descriptor
148 * \return the spawned decoder object
149 */
150 decoder_t *input_DecoderNew( input_thread_t *p_input,
151 es_format_t *fmt, bool b_force_decoder )
152 {
153 decoder_t *p_dec = NULL;
154 vlc_value_t val;
155
156 #ifndef ENABLE_SOUT
157 (void)b_force_decoder;
158 #else
159 /* If we are in sout mode, search for packetizer module */
160 if( p_input->p->p_sout && !b_force_decoder )
161 {
162 /* Create the decoder configuration structure */
163 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
164 if( p_dec == NULL )
165 {
166 msg_Err( p_input, "could not create packetizer" );
167 intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
168 _("VLC could not open the packetizer module.") );
169 return NULL;
170 }
171 }
172 else
173 #endif
174 {
175 /* Create the decoder configuration structure */
176 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
177 if( p_dec == NULL )
178 {
179 msg_Err( p_input, "could not create decoder" );
180 intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
181 _("VLC could not open the decoder module.") );
182 return NULL;
183 }
184 }
185
186 if( !p_dec->p_module )
187 {
188 DecoderUnsupportedCodec( p_dec, fmt->i_codec );
189
190 DeleteDecoder( p_dec );
191 vlc_object_release( p_dec );
192 return NULL;
193 }
194
195 if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
196 !b_force_decoder )
197 {
198 msg_Dbg( p_input, "stream out mode -> no decoder thread" );
199 p_dec->p_owner->b_own_thread = false;
200 }
201 else
202 {
203 var_Get( p_input, "minimize-threads", &val );
204 p_dec->p_owner->b_own_thread = !val.b_bool;
205 }
206
207 if( p_dec->p_owner->b_own_thread )
208 {
209 int i_priority;
210 if( fmt->i_cat == AUDIO_ES )
211 i_priority = VLC_THREAD_PRIORITY_AUDIO;
212 else
213 i_priority = VLC_THREAD_PRIORITY_VIDEO;
214
215 /* Spawn the decoder thread */
216 if( vlc_thread_create( p_dec, "decoder", DecoderThread,
217 i_priority, false ) )
218 {
219 msg_Err( p_dec, "cannot spawn decoder thread" );
220 module_Unneed( p_dec, p_dec->p_module );
221 DeleteDecoder( p_dec );
222 vlc_object_release( p_dec );
223 return NULL;
224 }
225 }
226
227 return p_dec;
228 }
229
230 /**
231 * Kills a decoder thread and waits until it's finished
232 *
233 * \param p_input the input thread
234 * \param p_es the es descriptor
235 * \return nothing
236 */
237 void input_DecoderDelete( decoder_t *p_dec )
238 {
239 vlc_object_kill( p_dec );
240
241 if( p_dec->p_owner->b_own_thread )
242 {
243 /* Make sure the thread leaves the function by
244 * sending it an empty block. */
245 block_t *p_block = block_New( p_dec, 0 );
246 input_DecoderDecode( p_dec, p_block );
247
248 vlc_thread_join( p_dec );
249
250 /* Don't module_Unneed() here because of the dll loader that wants
251 * close() in the same thread than open()/decode() */
252 }
253 else
254 {
255 /* Flush */
256 input_DecoderDecode( p_dec, NULL );
257
258 module_Unneed( p_dec, p_dec->p_module );
259 }
260
261 /* */
262 if( p_dec->p_owner->b_cc_supported )
263 {
264 int i;
265 for( i = 0; i < 4; i++ )
266 input_DecoderSetCcState( p_dec, false, i );
267 }
268
269 /* Delete decoder configuration */
270 DeleteDecoder( p_dec );
271
272 /* Delete the decoder */
273 vlc_object_release( p_dec );
274 }
275
276 /**
277 * Put a block_t in the decoder's fifo.
278 *
279 * \param p_dec the decoder object
280 * \param p_block the data block
281 */
282 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
283 {
284 if( p_dec->p_owner->b_own_thread )
285 {
286 if( p_dec->p_owner->p_input->p->b_out_pace_control )
287 {
288 /* FIXME !!!!! */
289 while( !p_dec->b_die && !p_dec->b_error &&
290 block_FifoCount( p_dec->p_owner->p_fifo ) > 10 )
291 {
292 msleep( 1000 );
293 }
294 }
295 else if( block_FifoSize( p_dec->p_owner->p_fifo ) > 50000000 /* 50 MB */ )
296 {
297 /* FIXME: ideally we would check the time amount of data
298 * in the fifo instead of its size. */
299 msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
300 "consumed quickly enough), resetting fifo!" );
301 block_FifoEmpty( p_dec->p_owner->p_fifo );
302 }
303
304 block_FifoPut( p_dec->p_owner->p_fifo, p_block );
305 }
306 else
307 {
308 if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
309 {
310 if( p_block ) block_Release( p_block );
311 }
312 else
313 {
314 DecoderDecode( p_dec, p_block );
315 }
316 }
317 }
318
319 void input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush )
320 {
321 block_t *p_null;
322
323 /* Empty the fifo */
324 if( p_dec->p_owner->b_own_thread && b_flush )
325 block_FifoEmpty( p_dec->p_owner->p_fifo );
326
327 /* Send a special block */
328 p_null = block_New( p_dec, 128 );
329 p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
330 /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
331 if( p_dec->p_owner->p_packetizer && b_flush )
332 p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
333 memset( p_null->p_buffer, 0, p_null->i_buffer );
334
335 input_DecoderDecode( p_dec, p_null );
336 }
337
338 bool input_DecoderEmpty( decoder_t * p_dec )
339 {
340 if( p_dec->p_owner->b_own_thread
341 && block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
342 {
343 return false;
344 }
345 return true;
346 }
347
348 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
349 {
350 int i;
351
352 vlc_mutex_lock( &p_dec->p_owner->lock_cc );
353 for( i = 0; i < 4; i++ )
354 pb_present[i] = p_dec->p_owner->pb_cc_present[i];
355 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
356 }
357 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
358 {
359 decoder_owner_sys_t *p_owner = p_dec->p_owner;
360
361 //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
362
363 if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
364 return VLC_EGENERIC;
365
366 if( b_decode )
367 {
368 static const vlc_fourcc_t fcc[4] = {
369 VLC_FOURCC('c', 'c', '1', ' '),
370 VLC_FOURCC('c', 'c', '2', ' '),
371 VLC_FOURCC('c', 'c', '3', ' '),
372 VLC_FOURCC('c', 'c', '4', ' '),
373 };
374 decoder_t *p_cc;
375 es_format_t fmt;
376
377 es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
378 p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER );
379 if( !p_cc )
380 {
381 msg_Err( p_dec, "could not create decoder" );
382 intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
383 _("VLC could not open the decoder module.") );
384 return VLC_EGENERIC;
385 }
386 else if( !p_cc->p_module )
387 {
388 DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
389 DeleteDecoder( p_cc );
390 vlc_object_release( p_cc );
391 return VLC_EGENERIC;
392 }
393
394 vlc_mutex_lock( &p_owner->lock_cc );
395 p_dec->p_owner->pp_cc[i_channel] = p_cc;
396 vlc_mutex_unlock( &p_owner->lock_cc );
397 }
398 else
399 {
400 decoder_t *p_cc;
401
402 vlc_mutex_lock( &p_owner->lock_cc );
403 p_cc = p_dec->p_owner->pp_cc[i_channel];
404 p_dec->p_owner->pp_cc[i_channel] = NULL;
405 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
406
407 if( p_cc )
408 {
409 vlc_object_kill( p_cc );
410 module_Unneed( p_cc, p_cc->p_module );
411 DeleteDecoder( p_cc );
412 vlc_object_release( p_cc );
413 }
414 }
415 return VLC_SUCCESS;
416 }
417 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
418 {
419 decoder_owner_sys_t *p_owner = p_dec->p_owner;
420
421 *pb_decode = false;
422 if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
423 return VLC_EGENERIC;
424
425 vlc_mutex_lock( &p_owner->lock_cc );
426 *pb_decode = p_dec->p_owner->pp_cc[i_channel] != NULL;
427 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
428 return VLC_EGENERIC;
429 }
430
431 /**
432 * Create a decoder object
433 *
434 * \param p_input the input thread
435 * \param p_es the es descriptor
436 * \param i_object_type Object type as define in include/vlc_objects.h
437 * \return the decoder object
438 */
439 static decoder_t * CreateDecoder( input_thread_t *p_input,
440 es_format_t *fmt, int i_object_type )
441 {
442 decoder_t *p_dec;
443 decoder_owner_sys_t *p_owner;
444 int i;
445
446 p_dec = vlc_object_create( p_input, i_object_type );
447 if( p_dec == NULL )
448 return NULL;
449
450 p_dec->pf_decode_audio = 0;
451 p_dec->pf_decode_video = 0;
452 p_dec->pf_decode_sub = 0;
453 p_dec->pf_get_cc = 0;
454 p_dec->pf_packetize = 0;
455
456 /* Initialize the decoder fifo */
457 p_dec->p_module = NULL;
458
459 memset( &null_es_format, 0, sizeof(es_format_t) );
460 es_format_Copy( &p_dec->fmt_in, fmt );
461 es_format_Copy( &p_dec->fmt_out, &null_es_format );
462
463 /* Allocate our private structure for the decoder */
464 p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
465 if( p_dec->p_owner == NULL )
466 {
467 vlc_object_release( p_dec );
468 return NULL;
469 }
470 p_dec->p_owner->b_own_thread = true;
471 p_dec->p_owner->i_preroll_end = -1;
472 p_dec->p_owner->p_input = p_input;
473 p_dec->p_owner->p_aout = NULL;
474 p_dec->p_owner->p_aout_input = NULL;
475 p_dec->p_owner->p_vout = NULL;
476 p_dec->p_owner->p_spu_vout = NULL;
477 p_dec->p_owner->i_spu_channel = 0;
478 p_dec->p_owner->p_sout = p_input->p->p_sout;
479 p_dec->p_owner->p_sout_input = NULL;
480 p_dec->p_owner->p_packetizer = NULL;
481
482 /* decoder fifo */
483 if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
484 {
485 free( p_dec->p_owner );
486 vlc_object_release( p_dec );
487 return NULL;
488 }
489
490 /* Set buffers allocation callbacks for the decoders */
491 p_dec->pf_aout_buffer_new = aout_new_buffer;
492 p_dec->pf_aout_buffer_del = aout_del_buffer;
493 p_dec->pf_vout_buffer_new = vout_new_buffer;
494 p_dec->pf_vout_buffer_del = vout_del_buffer;
495 p_dec->pf_picture_link = vout_link_picture;
496 p_dec->pf_picture_unlink = vout_unlink_picture;
497 p_dec->pf_spu_buffer_new = spu_new_buffer;
498 p_dec->pf_spu_buffer_del = spu_del_buffer;
499
500 vlc_object_attach( p_dec, p_input );
501
502 /* Find a suitable decoder/packetizer module */
503 if( i_object_type == VLC_OBJECT_DECODER )
504 p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
505 else
506 p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
507
508 /* Check if decoder requires already packetized data */
509 if( i_object_type == VLC_OBJECT_DECODER &&
510 p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
511 {
512 p_dec->p_owner->p_packetizer =
513 vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
514 if( p_dec->p_owner->p_packetizer )
515 {
516 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
517 &p_dec->fmt_in );
518
519 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
520 &null_es_format );
521
522 vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
523
524 p_dec->p_owner->p_packetizer->p_module =
525 module_Need( p_dec->p_owner->p_packetizer,
526 "packetizer", "$packetizer", 0 );
527
528 if( !p_dec->p_owner->p_packetizer->p_module )
529 {
530 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
531 vlc_object_detach( p_dec->p_owner->p_packetizer );
532 vlc_object_release( p_dec->p_owner->p_packetizer );
533 }
534 }
535 }
536
537 /* Copy ourself the input replay gain */
538 if( fmt->i_cat == AUDIO_ES )
539 {
540 for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
541 {
542 if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
543 {
544 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
545 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
546 }
547 if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
548 {
549 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
550 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
551 }
552 }
553 }
554 /* */
555 p_owner->b_cc_supported = false;
556 if( i_object_type == VLC_OBJECT_DECODER )
557 {
558 if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
559 p_owner->b_cc_supported = true;
560 if( p_dec->pf_get_cc )
561 p_owner->b_cc_supported = true;
562 }
563
564 vlc_mutex_init( &p_owner->lock_cc );
565 for( i = 0; i < 4; i++ )
566 {
567 p_owner->pb_cc_present[i] = false;
568 p_owner->pp_cc[i] = NULL;
569 }
570 return p_dec;
571 }
572
573 /**
574 * The decoding main loop
575 *
576 * \param p_dec the decoder
577 * \return 0
578 */
579 static int DecoderThread( decoder_t * p_dec )
580 {
581 block_t *p_block;
582
583 /* The decoder's main loop */
584 while( !p_dec->b_die && !p_dec->b_error )
585 {
586 if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
587 {
588 p_dec->b_error = 1;
589 break;
590 }
591 if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
592 {
593 break;
594 }
595 }
596
597 while( !p_dec->b_die )
598 {
599 /* Trash all received PES packets */
600 p_block = block_FifoGet( p_dec->p_owner->p_fifo );
601 if( p_block ) block_Release( p_block );
602 }
603
604 /* We do it here because of the dll loader that wants close() in the
605 * same thread than open()/decode() */
606 module_Unneed( p_dec, p_dec->p_module );
607
608 return 0;
609 }
610
611 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
612 {
613 if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
614 *pi_preroll = INT64_MAX;
615 else if( p->i_pts > 0 )
616 *pi_preroll = __MIN( *pi_preroll, p->i_pts );
617 else if( p->i_dts > 0 )
618 *pi_preroll = __MIN( *pi_preroll, p->i_dts );
619 }
620 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
621 {
622 input_thread_t *p_input = p_dec->p_owner->p_input;
623 const int i_rate = p_block->i_rate;
624 aout_buffer_t *p_aout_buf;
625
626 while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
627 {
628 aout_instance_t *p_aout = p_dec->p_owner->p_aout;
629 aout_input_t *p_aout_input = p_dec->p_owner->p_aout_input;
630
631 if( p_dec->b_die )
632 {
633 /* It prevent freezing VLC in case of broken decoder */
634 aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
635 if( p_block )
636 block_Release( p_block );
637 break;
638 }
639 vlc_mutex_lock( &p_input->p->counters.counters_lock );
640 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
641 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
642
643 if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
644 {
645 aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
646 continue;
647 }
648
649 if( p_dec->p_owner->i_preroll_end > 0 )
650 {
651 /* FIXME TODO flush audio output (don't know how to do that) */
652 msg_Dbg( p_dec, "End of audio preroll" );
653 p_dec->p_owner->i_preroll_end = -1;
654 }
655 aout_DecPlay( p_aout, p_aout_input, p_aout_buf, i_rate );
656 }
657 }
658 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
659 {
660 block_t *p_cc;
661 bool pb_present[4];
662 int i;
663 int i_cc_decoder;
664
665 assert( p_dec_cc->pf_get_cc != NULL );
666
667 /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
668 if( !p_dec->p_owner->b_cc_supported )
669 return;
670
671 p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
672 if( !p_cc )
673 return;
674
675 vlc_mutex_lock( &p_dec->p_owner->lock_cc );
676 for( i = 0, i_cc_decoder = 0; i < 4; i++ )
677 {
678 p_dec->p_owner->pb_cc_present[i] |= pb_present[i];
679 if( p_dec->p_owner->pp_cc[i] )
680 i_cc_decoder++;
681 }
682
683 for( i = 0; i < 4; i++ )
684 {
685 if( !p_dec->p_owner->pp_cc[i] )
686 continue;
687
688 if( i_cc_decoder > 1 )
689 DecoderDecode( p_dec->p_owner->pp_cc[i], block_Duplicate( p_cc ) );
690 else
691 DecoderDecode( p_dec->p_owner->pp_cc[i], p_cc );
692 i_cc_decoder--;
693 }
694 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
695 }
696 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
697 {
698 vlc_mutex_lock( &p_vout->picture_lock );
699
700 if( p_pic->i_status == READY_PICTURE )
701 {
702 /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
703 p_pic->date = 1;
704 }
705 else if( p_pic->i_refcount > 0 )
706 {
707 p_pic->i_status = DISPLAYED_PICTURE;
708 }
709 else
710 {
711 p_pic->i_status = DESTROYED_PICTURE;
712 p_vout->i_heap_size--;
713 }
714
715 vlc_mutex_unlock( &p_vout->picture_lock );
716 }
717 static void VoutFlushPicture( vout_thread_t *p_vout )
718 {
719 int i;
720 vlc_mutex_lock( &p_vout->picture_lock );
721 for( i = 0; i < p_vout->render.i_pictures; i++ )
722 {
723 picture_t *p_pic = p_vout->render.pp_picture[i];
724
725 if( p_pic->i_status == READY_PICTURE ||
726 p_pic->i_status == DISPLAYED_PICTURE )
727 {
728 /* We cannot change picture status if it is in READY_PICTURE state,
729 * Just make sure they won't be displayed */
730 p_pic->date = 1;
731 }
732 }
733 vlc_mutex_unlock( &p_vout->picture_lock );
734 }
735
736
737 static void optimize_video_pts( decoder_t *p_dec )
738 {
739 picture_t * oldest_pict = NULL;
740 picture_t * youngest_pict = NULL;
741 int i;
742
743 input_thread_t * p_input = p_dec->p_owner->p_input;
744 vout_thread_t * p_vout = p_dec->p_owner->p_vout;
745 input_thread_private_t * p_priv = p_input->p;
746
747 /* Enable with --auto-adjust-pts-delay */
748 if( !p_priv->pts_adjust.auto_adjust ) return;
749
750 for( i = 0; i < I_RENDERPICTURES; i++ )
751 {
752 picture_t * pic = PP_RENDERPICTURE[i];
753 if( pic->i_status != READY_PICTURE )
754 continue;
755
756 if( !oldest_pict || pic->date < oldest_pict->date )
757 oldest_pict = pic;
758 if( !youngest_pict || pic->date > youngest_pict->date )
759 youngest_pict = pic;
760 }
761
762 if( !youngest_pict || !oldest_pict )
763 return;
764
765 /* Try to find if we can reduce the pts
766 * This first draft is way to simple, and we can't say if the
767 * algo will converge. It's also full of constants.
768 * But this simple algo allows to reduce the latency
769 * to the minimum.
770 * The whole point of this, is to bypass the pts_delay set
771 * by the access but also the delay arbitraly set by
772 * the remote server.
773 * Actually the remote server's muxer may set up a
774 * pts<->dts delay in the muxed stream. That is
775 * why we may end up in having a negative pts_delay,
776 * to compensate that artificial delay. */
777 mtime_t buffer_size = youngest_pict->date - oldest_pict->date;
778 int64_t pts_slide = 0;
779 if( buffer_size < 10000 )
780 {
781 if( p_priv->pts_adjust.i_num_faulty > 10 )
782 {
783 pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
784 p_priv->pts_adjust.i_num_faulty = 0;
785 }
786 if( p_priv->pts_adjust.to_high )
787 {
788 p_priv->pts_adjust.to_high = !p_priv->pts_adjust.to_high;
789 p_priv->pts_adjust.i_num_faulty = 0;
790 }
791 p_priv->pts_adjust.i_num_faulty++;
792 }
793 else if( buffer_size > 100000 )
794 {
795 if( p_priv->pts_adjust.i_num_faulty > 25 )
796 {
797 pts_slide = -buffer_size/2;
798 p_priv->pts_adjust.i_num_faulty = 0;
799 }
800 if( p_priv->pts_adjust.to_high )
801 {
802 p_priv->pts_adjust.to_high = !p_priv->pts_adjust.to_high;
803 p_priv->pts_adjust.i_num_faulty = 0;
804 }
805 p_priv->pts_adjust.i_num_faulty++;
806 }
807 if( pts_slide )
808 {
809 mtime_t origi_delay = p_input->i_pts_delay;
810
811 p_input->i_pts_delay += pts_slide;
812
813 /* Don't play with the pts delay for more than -2<->3sec */
814 if( p_input->i_pts_delay < -2000000 )
815 p_input->i_pts_delay = -2000000;
816 else if( p_input->i_pts_delay > 3000000 )
817 p_input->i_pts_delay = 3000000;
818 pts_slide = p_input->i_pts_delay - origi_delay;
819
820 msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
821 (int)pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)buffer_size/1000);
822
823 vlc_mutex_lock( &p_vout->picture_lock );
824 /* Slide all the picture */
825 for( i = 0; i < I_RENDERPICTURES; i++ )
826 PP_RENDERPICTURE[i]->date += pts_slide;
827 /* FIXME: slide aout/spu */
828 vlc_mutex_unlock( &p_vout->picture_lock );
829
830 }
831 }
832
833 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
834 {
835 input_thread_t *p_input = p_dec->p_owner->p_input;
836 picture_t *p_pic;
837
838 while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
839 {
840 vout_thread_t *p_vout = p_dec->p_owner->p_vout;
841 if( p_dec->b_die )
842 {
843 /* It prevent freezing VLC in case of broken decoder */
844 VoutDisplayedPicture( p_vout, p_pic );
845 if( p_block )
846 block_Release( p_block );
847 break;
848 }
849
850 vlc_mutex_lock( &p_input->p->counters.counters_lock );
851 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
852 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
853
854 if( p_pic->date < p_dec->p_owner->i_preroll_end )
855 {
856 VoutDisplayedPicture( p_vout, p_pic );
857 continue;
858 }
859
860 if( p_dec->p_owner->i_preroll_end > 0 )
861 {
862 msg_Dbg( p_dec, "End of video preroll" );
863 if( p_vout )
864 VoutFlushPicture( p_vout );
865 /* */
866 p_dec->p_owner->i_preroll_end = -1;
867 }
868
869 if( ( !p_dec->p_owner->p_packetizer || !p_dec->p_owner->p_packetizer->pf_get_cc ) && p_dec->pf_get_cc )
870 DecoderGetCc( p_dec, p_dec );
871
872 vout_DatePicture( p_vout, p_pic, p_pic->date );
873
874 optimize_video_pts( p_dec );
875
876 vout_DisplayPicture( p_vout, p_pic );
877 }
878 }
879
880 /**
881 * Decode a block
882 *
883 * \param p_dec the decoder object
884 * \param p_block the block to decode
885 * \return VLC_SUCCESS or an error code
886 */
887 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
888 {
889 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
890 const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
891
892 if( p_block && p_block->i_buffer <= 0 )
893 {
894 block_Release( p_block );
895 return VLC_SUCCESS;
896 }
897
898 #ifdef ENABLE_SOUT
899 if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
900 {
901 block_t *p_sout_block;
902
903 while( ( p_sout_block =
904 p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
905 {
906 if( !p_dec->p_owner->p_sout_input )
907 {
908 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
909
910 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
911 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
912 if( p_dec->fmt_in.psz_language )
913 {
914 if( p_dec->p_owner->sout.psz_language )
915 free( p_dec->p_owner->sout.psz_language );
916 p_dec->p_owner->sout.psz_language =
917 strdup( p_dec->fmt_in.psz_language );
918 }
919
920 p_dec->p_owner->p_sout_input =
921 sout_InputNew( p_dec->p_owner->p_sout,
922 &p_dec->p_owner->sout );
923
924 if( p_dec->p_owner->p_sout_input == NULL )
925 {
926 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
927 (char *)&p_dec->p_owner->sout.i_codec );
928 p_dec->b_error = true;
929
930 while( p_sout_block )
931 {
932 block_t *p_next = p_sout_block->p_next;
933 block_Release( p_sout_block );
934 p_sout_block = p_next;
935 }
936 break;
937 }
938 }
939
940 while( p_sout_block )
941 {
942 block_t *p_next = p_sout_block->p_next;
943
944 p_sout_block->p_next = NULL;
945 p_sout_block->i_rate = i_rate;
946
947 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
948 p_sout_block );
949
950 p_sout_block = p_next;
951 }
952
953 /* For now it's enough, as only sout impact on this flag */
954 if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
955 p_dec->p_owner->p_input->p->b_out_pace_control )
956 {
957 msg_Dbg( p_dec, "switching to sync mode" );
958 p_dec->p_owner->p_input->p->b_out_pace_control = false;
959 }
960 else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
961 !p_dec->p_owner->p_input->p->b_out_pace_control )
962 {
963 msg_Dbg( p_dec, "switching to async mode" );
964 p_dec->p_owner->p_input->p->b_out_pace_control = true;
965 }
966 }
967 }
968 else
969 #endif
970 if( p_dec->fmt_in.i_cat == AUDIO_ES )
971 {
972 if( p_block )
973 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
974
975 if( p_dec->p_owner->p_packetizer )
976 {
977 block_t *p_packetized_block;
978 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
979
980 while( (p_packetized_block =
981 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
982 {
983 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
984 {
985 es_format_Clean( &p_dec->fmt_in );
986 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
987 }
988
989 while( p_packetized_block )
990 {
991 block_t *p_next = p_packetized_block->p_next;
992 p_packetized_block->p_next = NULL;
993 p_packetized_block->i_rate = i_rate;
994
995 DecoderDecodeAudio( p_dec, p_packetized_block );
996
997 p_packetized_block = p_next;
998 }
999 }
1000 }
1001 else if( p_block )
1002 {
1003 DecoderDecodeAudio( p_dec, p_block );
1004 }
1005 }
1006 else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1007 {
1008 if( p_block )
1009 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
1010
1011 if( p_dec->p_owner->p_packetizer )
1012 {
1013 block_t *p_packetized_block;
1014 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
1015
1016 while( (p_packetized_block =
1017 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1018 {
1019 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1020 {
1021 es_format_Clean( &p_dec->fmt_in );
1022 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1023 }
1024 if( p_packetizer->pf_get_cc )
1025 DecoderGetCc( p_dec, p_packetizer );
1026
1027 while( p_packetized_block )
1028 {
1029 block_t *p_next = p_packetized_block->p_next;
1030 p_packetized_block->p_next = NULL;
1031 p_packetized_block->i_rate = i_rate;
1032
1033 DecoderDecodeVideo( p_dec, p_packetized_block );
1034
1035 p_packetized_block = p_next;
1036 }
1037 }
1038 }
1039 else if( p_block )
1040 {
1041 DecoderDecodeVideo( p_dec, p_block );
1042 }
1043 }
1044 else if( p_dec->fmt_in.i_cat == SPU_ES )
1045 {
1046 input_thread_t *p_input = p_dec->p_owner->p_input;
1047 vout_thread_t *p_vout;
1048 subpicture_t *p_spu;
1049
1050 if( p_block )
1051 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
1052
1053 while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1054 {
1055 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1056 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1057 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1058
1059 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1060 if( p_vout && p_sys->p_spu_vout == p_vout )
1061 {
1062 /* Prerool does not work very well with subtitle */
1063 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
1064 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
1065 spu_DestroySubpicture( p_vout->p_spu, p_spu );
1066 else
1067 spu_DisplaySubpicture( p_vout->p_spu, p_spu );
1068 }
1069 else
1070 {
1071 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1072 }
1073 if( p_vout )
1074 vlc_object_release( p_vout );
1075 }
1076 }
1077 else
1078 {
1079 msg_Err( p_dec, "unknown ES format" );
1080 p_dec->b_error = 1;
1081 }
1082
1083 return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
1084 }
1085
1086 /**
1087 * Destroys a decoder object
1088 *
1089 * \param p_dec the decoder object
1090 * \return nothing
1091 */
1092 static void DeleteDecoder( decoder_t * p_dec )
1093 {
1094 msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1095 (char*)&p_dec->fmt_in.i_codec,
1096 (unsigned)block_FifoCount( p_dec->p_owner->p_fifo ) );
1097
1098 /* Free all packets still in the decoder fifo. */
1099 block_FifoEmpty( p_dec->p_owner->p_fifo );
1100 block_FifoRelease( p_dec->p_owner->p_fifo );
1101
1102 /* Cleanup */
1103 if( p_dec->p_owner->p_aout_input )
1104 aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
1105 if( p_dec->p_owner->p_aout )
1106 {
1107 vlc_object_release( p_dec->p_owner->p_aout );
1108 p_dec->p_owner->p_aout = NULL;
1109 }
1110 if( p_dec->p_owner->p_vout )
1111 {
1112 int i_pic;
1113
1114 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1115 /* Hack to make sure all the the pictures are freed by the decoder */
1116 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1117 i_pic++ )
1118 {
1119 if( p_pic->i_status == RESERVED_PICTURE )
1120 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1121 if( p_pic->i_refcount > 0 )
1122 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1123 }
1124 #undef p_pic
1125
1126 /* We are about to die. Reattach video output to p_vlc. */
1127 vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
1128 }
1129
1130 #ifdef ENABLE_SOUT
1131 if( p_dec->p_owner->p_sout_input )
1132 {
1133 sout_InputDelete( p_dec->p_owner->p_sout_input );
1134 es_format_Clean( &p_dec->p_owner->sout );
1135 }
1136 #endif
1137
1138 if( p_dec->fmt_in.i_cat == SPU_ES )
1139 {
1140 vout_thread_t *p_vout;
1141
1142 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1143 if( p_vout )
1144 {
1145 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1146 p_dec->p_owner->i_spu_channel );
1147 vlc_object_release( p_vout );
1148 }
1149 }
1150
1151 es_format_Clean( &p_dec->fmt_in );
1152 es_format_Clean( &p_dec->fmt_out );
1153
1154 if( p_dec->p_owner->p_packetizer )
1155 {
1156 module_Unneed( p_dec->p_owner->p_packetizer,
1157 p_dec->p_owner->p_packetizer->p_module );
1158 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
1159 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
1160 vlc_object_detach( p_dec->p_owner->p_packetizer );
1161 vlc_object_release( p_dec->p_owner->p_packetizer );
1162 }
1163
1164 vlc_mutex_destroy( &p_dec->p_owner->lock_cc );
1165
1166 vlc_object_detach( p_dec );
1167
1168 free( p_dec->p_owner );
1169 }
1170
1171 /*****************************************************************************
1172 * Buffers allocation callbacks for the decoders
1173 *****************************************************************************/
1174 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1175 {
1176 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1177 aout_buffer_t *p_buffer;
1178
1179 if( p_sys->p_aout_input != NULL &&
1180 ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
1181 p_dec->fmt_out.audio.i_original_channels !=
1182 p_sys->audio.i_original_channels ||
1183 p_dec->fmt_out.audio.i_bytes_per_frame !=
1184 p_sys->audio.i_bytes_per_frame ) )
1185 {
1186 /* Parameters changed, restart the aout */
1187 aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
1188 p_sys->p_aout_input = NULL;
1189 }
1190
1191 if( p_sys->p_aout_input == NULL )
1192 {
1193 audio_sample_format_t format;
1194 int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1195
1196 p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1197 p_sys->audio = p_dec->fmt_out.audio;
1198
1199 memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
1200 if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1201 == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1202 {
1203 if ( i_force_dolby == 1 )
1204 {
1205 format.i_original_channels = format.i_original_channels |
1206 AOUT_CHAN_DOLBYSTEREO;
1207 }
1208 else /* i_force_dolby == 2 */
1209 {
1210 format.i_original_channels = format.i_original_channels &
1211 ~AOUT_CHAN_DOLBYSTEREO;
1212 }
1213 }
1214
1215 p_sys->p_aout_input =
1216 aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
1217 if( p_sys->p_aout_input == NULL )
1218 {
1219 msg_Err( p_dec, "failed to create audio output" );
1220 p_dec->b_error = true;
1221 return NULL;
1222 }
1223 p_dec->fmt_out.audio.i_bytes_per_frame =
1224 p_sys->audio.i_bytes_per_frame;
1225 }
1226
1227 p_buffer = aout_DecNewBuffer( p_sys->p_aout_input, i_samples );
1228
1229 return p_buffer;
1230 }
1231
1232 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1233 {
1234 aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
1235 p_dec->p_owner->p_aout_input, p_buffer );
1236 }
1237
1238 static picture_t *vout_new_buffer( decoder_t *p_dec )
1239 {
1240 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1241 picture_t *p_pic;
1242
1243 if( p_sys->p_vout == NULL ||
1244 p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
1245 p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
1246 p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
1247 p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
1248 {
1249 if( !p_dec->fmt_out.video.i_width ||
1250 !p_dec->fmt_out.video.i_height )
1251 {
1252 /* Can't create a new vout without display size */
1253 return NULL;
1254 }
1255
1256 if( !p_dec->fmt_out.video.i_visible_width ||
1257 !p_dec->fmt_out.video.i_visible_height )
1258 {
1259 if( p_dec->fmt_in.video.i_visible_width &&
1260 p_dec->fmt_in.video.i_visible_height )
1261 {
1262 p_dec->fmt_out.video.i_visible_width =
1263 p_dec->fmt_in.video.i_visible_width;
1264 p_dec->fmt_out.video.i_visible_height =
1265 p_dec->fmt_in.video.i_visible_height;
1266 }
1267 else
1268 {
1269 p_dec->fmt_out.video.i_visible_width =
1270 p_dec->fmt_out.video.i_width;
1271 p_dec->fmt_out.video.i_visible_height =
1272 p_dec->fmt_out.video.i_height;
1273 }
1274 }
1275
1276 if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1277 var_CreateGetBool( p_dec, "hdtv-fix" ) )
1278 {
1279 p_dec->fmt_out.video.i_visible_height = 1080;
1280 p_dec->fmt_out.video.i_sar_num *= 135;
1281 p_dec->fmt_out.video.i_sar_den *= 136;
1282 msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1283 }
1284
1285 if( !p_dec->fmt_out.video.i_sar_num ||
1286 !p_dec->fmt_out.video.i_sar_den )
1287 {
1288 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1289 p_dec->fmt_out.video.i_visible_height;
1290
1291 p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1292 p_dec->fmt_out.video.i_visible_width;
1293 }
1294
1295 vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1296 &p_dec->fmt_out.video.i_sar_den,
1297 p_dec->fmt_out.video.i_sar_num,
1298 p_dec->fmt_out.video.i_sar_den, 50000 );
1299
1300 p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1301 p_sys->video = p_dec->fmt_out.video;
1302
1303 p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1304 &p_dec->fmt_out.video );
1305 if( p_sys->p_vout == NULL )
1306 {
1307 msg_Err( p_dec, "failed to create video output" );
1308 p_dec->b_error = true;
1309 return NULL;
1310 }
1311
1312 if( p_sys->video.i_rmask )
1313 p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1314 if( p_sys->video.i_gmask )
1315 p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1316 if( p_sys->video.i_bmask )
1317 p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1318 }
1319
1320 /* Get a new picture */
1321 while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1322 {
1323 int i_pic, i_ready_pic = 0;
1324
1325 if( p_dec->b_die || p_dec->b_error )
1326 {
1327 return NULL;
1328 }
1329
1330 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1331 /* Check the decoder doesn't leak pictures */
1332 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1333 i_pic++ )
1334 {
1335 if( p_pic->i_status == READY_PICTURE )
1336 {
1337 if( i_ready_pic++ > 0 ) break;
1338 else continue;
1339 }
1340
1341 if( p_pic->i_status != DISPLAYED_PICTURE &&
1342 p_pic->i_status != RESERVED_PICTURE &&
1343 p_pic->i_status != READY_PICTURE ) break;
1344
1345 if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1346 break;
1347 }
1348 if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1349 {
1350 msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1351
1352 /* Just free all the pictures */
1353 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1354 i_pic++ )
1355 {
1356 if( p_pic->i_status == RESERVED_PICTURE )
1357 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1358 if( p_pic->i_refcount > 0 )
1359 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1360 }
1361 }
1362 #undef p_pic
1363
1364 msleep( VOUT_OUTMEM_SLEEP );
1365 }
1366
1367 return p_pic;
1368 }
1369
1370 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1371 {
1372 VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1373 }
1374
1375 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1376 {
1377 vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1378 }
1379
1380 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1381 {
1382 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1383 }
1384
1385 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1386 {
1387 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1388 vout_thread_t *p_vout = NULL;
1389 subpicture_t *p_subpic;
1390 int i_attempts = 30;
1391
1392 while( i_attempts-- )
1393 {
1394 if( p_dec->b_die || p_dec->b_error ) break;
1395
1396 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1397 if( p_vout ) break;
1398
1399 msleep( VOUT_DISPLAY_DELAY );
1400 }
1401
1402 if( !p_vout )
1403 {
1404 msg_Warn( p_dec, "no vout found, dropping subpicture" );
1405 return NULL;
1406 }
1407
1408 if( p_sys->p_spu_vout != p_vout )
1409 {
1410 spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1411 &p_sys->i_spu_channel );
1412 p_sys->p_spu_vout = p_vout;
1413 }
1414
1415 p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1416 if( p_subpic )
1417 {
1418 p_subpic->i_channel = p_sys->i_spu_channel;
1419 }
1420
1421 vlc_object_release( p_vout );
1422
1423 return p_subpic;
1424 }
1425
1426 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1427 {
1428 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1429 vout_thread_t *p_vout = NULL;
1430
1431 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1432 if( !p_vout || p_sys->p_spu_vout != p_vout )
1433 {
1434 if( p_vout )
1435 vlc_object_release( p_vout );
1436 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1437 return;
1438 }
1439
1440 spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1441
1442 vlc_object_release( p_vout );
1443 }
1444
VLC Development tree mirror