decoder: work around race whereby pause kicks during lip-sync
[vlc.git] / src / input / decoder.c
1 /*****************************************************************************
2  * decoder.c: Functions for the management of decoders
3  *****************************************************************************
4  * Copyright (C) 1999-2004 VLC authors and VideoLAN
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 it
12  * under the terms of the GNU Lesser General Public License as published by
13  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public License
22  * along with this program; if not, write to the Free Software Foundation,
23  * 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_spu.h>
42 #include <vlc_meta.h>
43 #include <vlc_dialog.h>
44 #include <vlc_modules.h>
45
46 #include "audio_output/aout_internal.h"
47 #include "stream_output/stream_output.h"
48 #include "input_internal.h"
49 #include "clock.h"
50 #include "decoder.h"
51 #include "event.h"
52 #include "resource.h"
53
54 #include "../video_output/vout_control.h"
55
56 static decoder_t *CreateDecoder( vlc_object_t *, input_thread_t *,
57                                  es_format_t *, bool, input_resource_t *,
58                                  sout_instance_t *p_sout );
59 static void       DeleteDecoder( decoder_t * );
60
61 static void      *DecoderThread( void * );
62 static void       DecoderProcess( decoder_t *, block_t * );
63 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
64 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
65 static void       DecoderFlush( decoder_t * );
66 static void       DecoderSignalBuffering( decoder_t *, bool );
67 static void       DecoderFlushBuffering( decoder_t * );
68
69 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
70
71 /* Buffers allocation callbacks for the decoders */
72 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
73
74 static picture_t *vout_new_buffer( decoder_t * );
75 static void vout_del_buffer( decoder_t *, picture_t * );
76 static void vout_link_picture( decoder_t *, picture_t * );
77 static void vout_unlink_picture( decoder_t *, picture_t * );
78
79 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
80 static void spu_del_buffer( decoder_t *, subpicture_t * );
81
82 struct decoder_owner_sys_t
83 {
84     int64_t         i_preroll_end;
85
86     input_thread_t  *p_input;
87     input_resource_t*p_resource;
88     input_clock_t   *p_clock;
89     int             i_last_rate;
90
91     vout_thread_t   *p_spu_vout;
92     int              i_spu_channel;
93     int64_t          i_spu_order;
94
95     sout_instance_t         *p_sout;
96     sout_packetizer_input_t *p_sout_input;
97
98     vlc_thread_t     thread;
99
100     /* Some decoders require already packetized data (ie. not truncated) */
101     decoder_t *p_packetizer;
102     bool b_packetizer;
103
104     /* Current format in use by the output */
105     video_format_t video;
106     audio_format_t audio;
107     es_format_t    sout;
108
109     /* */
110     bool           b_fmt_description;
111     es_format_t    fmt_description;
112     vlc_meta_t     *p_description;
113
114     /* fifo */
115     block_fifo_t *p_fifo;
116
117     /* Lock for communication with decoder thread */
118     vlc_mutex_t lock;
119     vlc_cond_t  wait_request;
120     vlc_cond_t  wait_acknowledge;
121
122     /* -- These variables need locking on write(only) -- */
123     audio_output_t *p_aout;
124
125     vout_thread_t   *p_vout;
126
127     /* -- Theses variables need locking on read *and* write -- */
128     bool b_exit;
129
130     /* Pause */
131     bool b_paused;
132     struct
133     {
134         mtime_t i_date;
135         int     i_ignore;
136     } pause;
137
138     /* Buffering */
139     bool b_buffering;
140     struct
141     {
142         bool b_first;
143         bool b_full;
144         int  i_count;
145
146         picture_t     *p_picture;
147         picture_t     **pp_picture_next;
148
149         subpicture_t  *p_subpic;
150         subpicture_t  **pp_subpic_next;
151
152         aout_buffer_t *p_audio;
153         aout_buffer_t **pp_audio_next;
154
155         block_t       *p_block;
156         block_t       **pp_block_next;
157     } buffer;
158
159     /* Flushing */
160     bool b_flushing;
161
162     /* CC */
163     struct
164     {
165         bool b_supported;
166         bool pb_present[4];
167         decoder_t *pp_decoder[4];
168     } cc;
169
170     /* Delay */
171     mtime_t i_ts_delay;
172 };
173
174 #define DECODER_MAX_BUFFERING_COUNT (4)
175 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
176 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
177
178 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
179  * a bogus PTS and won't be displayed */
180 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
181
182 /* */
183 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
184
185
186 /*****************************************************************************
187  * Public functions
188  *****************************************************************************/
189 picture_t *decoder_NewPicture( decoder_t *p_decoder )
190 {
191     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
192     if( !p_picture )
193         msg_Warn( p_decoder, "can't get output picture" );
194     return p_picture;
195 }
196 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
197 {
198     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
199 }
200 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
201 {
202     p_decoder->pf_picture_link( p_decoder, p_picture );
203 }
204 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
205 {
206     p_decoder->pf_picture_unlink( p_decoder, p_picture );
207 }
208
209 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
210 {
211     if( !p_decoder->pf_aout_buffer_new )
212         return NULL;
213     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
214 }
215
216 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
217                                      const subpicture_updater_t *p_dyn )
218 {
219     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
220     if( !p_subpicture )
221         msg_Warn( p_decoder, "can't get output subpicture" );
222     return p_subpicture;
223 }
224
225 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
226 {
227     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
228 }
229
230 /* decoder_GetInputAttachments:
231  */
232 int decoder_GetInputAttachments( decoder_t *p_dec,
233                                  input_attachment_t ***ppp_attachment,
234                                  int *pi_attachment )
235 {
236     if( !p_dec->pf_get_attachments )
237         return VLC_EGENERIC;
238
239     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
240 }
241 /* decoder_GetDisplayDate:
242  */
243 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
244 {
245     if( !p_dec->pf_get_display_date )
246         return VLC_TS_INVALID;
247
248     return p_dec->pf_get_display_date( p_dec, i_ts );
249 }
250 /* decoder_GetDisplayRate:
251  */
252 int decoder_GetDisplayRate( decoder_t *p_dec )
253 {
254     if( !p_dec->pf_get_display_rate )
255         return INPUT_RATE_DEFAULT;
256
257     return p_dec->pf_get_display_rate( p_dec );
258 }
259
260 /* TODO: pass p_sout through p_resource? -- Courmisch */
261 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
262                                es_format_t *fmt, input_clock_t *p_clock,
263                                input_resource_t *p_resource,
264                                sout_instance_t *p_sout  )
265 {
266     decoder_t *p_dec = NULL;
267     const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
268     int i_priority;
269
270     /* Create the decoder configuration structure */
271     p_dec = CreateDecoder( p_parent, p_input, fmt,
272                            p_sout != NULL, p_resource, p_sout );
273     if( p_dec == NULL )
274     {
275         msg_Err( p_parent, "could not create %s", psz_type );
276         dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
277                       _("VLC could not open the %s module."),
278                       vlc_gettext( psz_type ) );
279         return NULL;
280     }
281
282     if( !p_dec->p_module )
283     {
284         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
285
286         DeleteDecoder( p_dec );
287         return NULL;
288     }
289
290     p_dec->p_owner->p_clock = p_clock;
291     assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
292
293     if( p_dec->fmt_out.i_cat == AUDIO_ES )
294         i_priority = VLC_THREAD_PRIORITY_AUDIO;
295     else
296         i_priority = VLC_THREAD_PRIORITY_VIDEO;
297
298     /* Spawn the decoder thread */
299     if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
300     {
301         msg_Err( p_dec, "cannot spawn decoder thread" );
302         module_unneed( p_dec, p_dec->p_module );
303         DeleteDecoder( p_dec );
304         return NULL;
305     }
306
307     return p_dec;
308 }
309
310
311 /**
312  * Spawns a new decoder thread from the input thread
313  *
314  * \param p_input the input thread
315  * \param p_es the es descriptor
316  * \return the spawned decoder object
317  */
318 decoder_t *input_DecoderNew( input_thread_t *p_input,
319                              es_format_t *fmt, input_clock_t *p_clock,
320                              sout_instance_t *p_sout  )
321 {
322     return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
323                         p_input->p->p_resource, p_sout );
324 }
325
326 /**
327  * Spawn a decoder thread outside of the input thread.
328  */
329 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
330                                 input_resource_t *p_resource )
331 {
332     return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
333 }
334
335
336 /**
337  * Kills a decoder thread and waits until it's finished
338  *
339  * \param p_input the input thread
340  * \param p_es the es descriptor
341  * \return nothing
342  */
343 void input_DecoderDelete( decoder_t *p_dec )
344 {
345     decoder_owner_sys_t *p_owner = p_dec->p_owner;
346
347     vlc_cancel( p_owner->thread );
348
349     /* Make sure we aren't paused/buffering/waiting/decoding anymore */
350     vlc_mutex_lock( &p_owner->lock );
351     const bool b_was_paused = p_owner->b_paused;
352     p_owner->b_paused = false;
353     p_owner->b_buffering = false;
354     p_owner->b_flushing = true;
355     p_owner->b_exit = true;
356     vlc_cond_signal( &p_owner->wait_request );
357     vlc_mutex_unlock( &p_owner->lock );
358
359     vlc_join( p_owner->thread, NULL );
360     p_owner->b_paused = b_was_paused;
361
362     module_unneed( p_dec, p_dec->p_module );
363
364     /* */
365     if( p_dec->p_owner->cc.b_supported )
366     {
367         int i;
368         for( i = 0; i < 4; i++ )
369             input_DecoderSetCcState( p_dec, false, i );
370     }
371
372     /* Delete decoder */
373     DeleteDecoder( p_dec );
374 }
375
376 /**
377  * Put a block_t in the decoder's fifo.
378  * Thread-safe w.r.t. the decoder. May be a cancellation point.
379  *
380  * \param p_dec the decoder object
381  * \param p_block the data block
382  */
383 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
384 {
385     decoder_owner_sys_t *p_owner = p_dec->p_owner;
386
387     if( b_do_pace )
388     {
389         /* The fifo is not consummed when buffering and so will
390          * deadlock vlc.
391          * There is no need to lock as b_buffering is never modify
392          * inside decoder thread. */
393         if( !p_owner->b_buffering )
394             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
395     }
396 #ifdef __arm__
397     else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
398 #else
399     else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
400 #endif
401     {
402         /* FIXME: ideally we would check the time amount of data
403          * in the FIFO instead of its size. */
404         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
405                   "consumed quickly enough), resetting fifo!" );
406         block_FifoEmpty( p_owner->p_fifo );
407     }
408
409     block_FifoPut( p_owner->p_fifo, p_block );
410 }
411
412 bool input_DecoderIsEmpty( decoder_t * p_dec )
413 {
414     decoder_owner_sys_t *p_owner = p_dec->p_owner;
415     assert( !p_owner->b_buffering );
416
417     bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
418     if( b_empty )
419     {
420         vlc_mutex_lock( &p_owner->lock );
421         /* TODO subtitles support */
422         if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
423             b_empty = vout_IsEmpty( p_owner->p_vout );
424         else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
425             b_empty = aout_DecIsEmpty( p_owner->p_aout );
426         vlc_mutex_unlock( &p_owner->lock );
427     }
428     return b_empty;
429 }
430
431 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
432 {
433     decoder_owner_sys_t *p_owner = p_dec->p_owner;
434     int i;
435
436     vlc_mutex_lock( &p_owner->lock );
437     for( i = 0; i < 4; i++ )
438         pb_present[i] =  p_owner->cc.pb_present[i];
439     vlc_mutex_unlock( &p_owner->lock );
440 }
441 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
442 {
443     decoder_owner_sys_t *p_owner = p_dec->p_owner;
444
445     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
446
447     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
448         return VLC_EGENERIC;
449
450     if( b_decode )
451     {
452         static const vlc_fourcc_t fcc[4] = {
453             VLC_FOURCC('c', 'c', '1', ' '),
454             VLC_FOURCC('c', 'c', '2', ' '),
455             VLC_FOURCC('c', 'c', '3', ' '),
456             VLC_FOURCC('c', 'c', '4', ' '),
457         };
458         decoder_t *p_cc;
459         es_format_t fmt;
460
461         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
462         p_cc = CreateDecoder( VLC_OBJECT(p_dec), p_owner->p_input, &fmt,
463                               false, p_owner->p_resource, p_owner->p_sout );
464         if( !p_cc )
465         {
466             msg_Err( p_dec, "could not create decoder" );
467             dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
468                           _("VLC could not open the decoder module.") );
469             return VLC_EGENERIC;
470         }
471         else if( !p_cc->p_module )
472         {
473             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
474             DeleteDecoder( p_cc );
475             return VLC_EGENERIC;
476         }
477         p_cc->p_owner->p_clock = p_owner->p_clock;
478
479         vlc_mutex_lock( &p_owner->lock );
480         p_owner->cc.pp_decoder[i_channel] = p_cc;
481         vlc_mutex_unlock( &p_owner->lock );
482     }
483     else
484     {
485         decoder_t *p_cc;
486
487         vlc_mutex_lock( &p_owner->lock );
488         p_cc = p_owner->cc.pp_decoder[i_channel];
489         p_owner->cc.pp_decoder[i_channel] = NULL;
490         vlc_mutex_unlock( &p_owner->lock );
491
492         if( p_cc )
493         {
494             module_unneed( p_cc, p_cc->p_module );
495             DeleteDecoder( p_cc );
496         }
497     }
498     return VLC_SUCCESS;
499 }
500 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
501 {
502     decoder_owner_sys_t *p_owner = p_dec->p_owner;
503
504     *pb_decode = false;
505     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
506         return VLC_EGENERIC;
507
508     vlc_mutex_lock( &p_owner->lock );
509     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
510     vlc_mutex_unlock( &p_owner->lock );
511     return VLC_EGENERIC;
512 }
513
514 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
515 {
516     decoder_owner_sys_t *p_owner = p_dec->p_owner;
517
518     vlc_mutex_lock( &p_owner->lock );
519
520     assert( p_owner->b_paused != b_paused );
521
522     p_owner->b_paused = b_paused;
523     p_owner->pause.i_date = i_date;
524     p_owner->pause.i_ignore = 0;
525     vlc_cond_signal( &p_owner->wait_request );
526
527     DecoderOutputChangePause( p_dec, b_paused, i_date );
528
529     vlc_mutex_unlock( &p_owner->lock );
530 }
531
532 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
533 {
534     decoder_owner_sys_t *p_owner = p_dec->p_owner;
535
536     vlc_mutex_lock( &p_owner->lock );
537     p_owner->i_ts_delay = i_delay;
538     vlc_mutex_unlock( &p_owner->lock );
539 }
540
541 void input_DecoderStartBuffering( decoder_t *p_dec )
542 {
543     decoder_owner_sys_t *p_owner = p_dec->p_owner;
544
545     vlc_mutex_lock( &p_owner->lock );
546
547     DecoderFlush( p_dec );
548
549     p_owner->buffer.b_first = true;
550     p_owner->buffer.b_full = false;
551     p_owner->buffer.i_count = 0;
552
553     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
554             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
555
556     p_owner->buffer.p_picture = NULL;
557     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
558
559     p_owner->buffer.p_subpic = NULL;
560     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
561
562     p_owner->buffer.p_audio = NULL;
563     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
564
565     p_owner->buffer.p_block = NULL;
566     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
567
568
569     p_owner->b_buffering = true;
570
571     vlc_cond_signal( &p_owner->wait_request );
572
573     vlc_mutex_unlock( &p_owner->lock );
574 }
575
576 void input_DecoderStopBuffering( decoder_t *p_dec )
577 {
578     decoder_owner_sys_t *p_owner = p_dec->p_owner;
579
580     vlc_mutex_lock( &p_owner->lock );
581
582     p_owner->b_buffering = false;
583
584     vlc_cond_signal( &p_owner->wait_request );
585
586     vlc_mutex_unlock( &p_owner->lock );
587 }
588
589 void input_DecoderWaitBuffering( decoder_t *p_dec )
590 {
591     decoder_owner_sys_t *p_owner = p_dec->p_owner;
592
593     vlc_mutex_lock( &p_owner->lock );
594
595     while( p_owner->b_buffering && !p_owner->buffer.b_full )
596     {
597         block_FifoWake( p_owner->p_fifo );
598         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
599     }
600
601     vlc_mutex_unlock( &p_owner->lock );
602 }
603
604 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
605 {
606     decoder_owner_sys_t *p_owner = p_dec->p_owner;
607
608     *pi_duration = 0;
609
610     vlc_mutex_lock( &p_owner->lock );
611     if( p_dec->fmt_out.i_cat == VIDEO_ES )
612     {
613         if( p_owner->b_paused && p_owner->p_vout )
614         {
615             vout_NextPicture( p_owner->p_vout, pi_duration );
616             p_owner->pause.i_ignore++;
617             vlc_cond_signal( &p_owner->wait_request );
618         }
619     }
620     else
621     {
622         /* TODO subtitle should not be flushed */
623         DecoderFlush( p_dec );
624     }
625     vlc_mutex_unlock( &p_owner->lock );
626 }
627
628 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
629 {
630     decoder_owner_sys_t *p_owner = p_dec->p_owner;
631     bool b_changed;
632
633     vlc_mutex_lock( &p_owner->lock );
634     b_changed = p_owner->b_fmt_description;
635     if( b_changed )
636     {
637         if( p_fmt )
638             es_format_Copy( p_fmt, &p_owner->fmt_description );
639
640         if( pp_meta )
641         {
642             *pp_meta = NULL;
643             if( p_owner->p_description )
644             {
645                 *pp_meta = vlc_meta_New();
646                 if( *pp_meta )
647                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
648             }
649         }
650         p_owner->b_fmt_description = false;
651     }
652     vlc_mutex_unlock( &p_owner->lock );
653     return b_changed;
654 }
655
656 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
657 {
658     decoder_owner_sys_t *p_owner = p_dec->p_owner;
659
660     return block_FifoSize( p_owner->p_fifo );
661 }
662
663 void input_DecoderGetObjects( decoder_t *p_dec,
664                               vout_thread_t **pp_vout, audio_output_t **pp_aout )
665 {
666     decoder_owner_sys_t *p_owner = p_dec->p_owner;
667
668     vlc_mutex_lock( &p_owner->lock );
669     if( pp_vout )
670         *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
671     if( pp_aout )
672         *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
673     vlc_mutex_unlock( &p_owner->lock );
674 }
675
676 /*****************************************************************************
677  * Internal functions
678  *****************************************************************************/
679 static int DecoderGetInputAttachments( decoder_t *p_dec,
680                                        input_attachment_t ***ppp_attachment,
681                                        int *pi_attachment )
682 {
683     input_thread_t *p_input = p_dec->p_owner->p_input;
684
685     if( unlikely(p_input == NULL) )
686         return VLC_ENOOBJ;
687     return input_Control( p_input, INPUT_GET_ATTACHMENTS,
688                           ppp_attachment, pi_attachment );
689 }
690 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
691 {
692     decoder_owner_sys_t *p_owner = p_dec->p_owner;
693
694     vlc_mutex_lock( &p_owner->lock );
695     if( p_owner->b_buffering || p_owner->b_paused )
696         i_ts = VLC_TS_INVALID;
697     vlc_mutex_unlock( &p_owner->lock );
698
699     if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
700         return i_ts;
701
702     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) )
703         return VLC_TS_INVALID;
704
705     return i_ts;
706 }
707 static int DecoderGetDisplayRate( decoder_t *p_dec )
708 {
709     decoder_owner_sys_t *p_owner = p_dec->p_owner;
710
711     if( !p_owner->p_clock )
712         return INPUT_RATE_DEFAULT;
713     return input_clock_GetRate( p_owner->p_clock );
714 }
715
716 /* */
717 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
718 {
719     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'. "
720              "VLC probably does not support this sound or video format.",
721              (char*)&codec );
722     dialog_Fatal( p_dec, _("No suitable decoder module"),
723                  _("VLC does not support the audio or video format \"%4.4s\". "
724                   "Unfortunately there is no way for you to fix this."),
725                   (char*)&codec );
726 }
727
728
729 /**
730  * Create a decoder object
731  *
732  * \param p_input the input thread
733  * \param p_es the es descriptor
734  * \param b_packetizer instead of a decoder
735  * \return the decoder object
736  */
737 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
738                                   input_thread_t *p_input,
739                                   es_format_t *fmt, bool b_packetizer,
740                                   input_resource_t *p_resource,
741                                   sout_instance_t *p_sout )
742 {
743     decoder_t *p_dec;
744     decoder_owner_sys_t *p_owner;
745     es_format_t null_es_format;
746
747     p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
748     if( p_dec == NULL )
749         return NULL;
750
751     p_dec->pf_decode_audio = NULL;
752     p_dec->pf_decode_video = NULL;
753     p_dec->pf_decode_sub = NULL;
754     p_dec->pf_get_cc = NULL;
755     p_dec->pf_packetize = NULL;
756
757     /* Initialize the decoder */
758     p_dec->p_module = NULL;
759
760     memset( &null_es_format, 0, sizeof(es_format_t) );
761     es_format_Copy( &p_dec->fmt_in, fmt );
762     es_format_Copy( &p_dec->fmt_out, &null_es_format );
763
764     p_dec->p_description = NULL;
765
766     /* Allocate our private structure for the decoder */
767     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
768     if( unlikely(p_owner == NULL) )
769     {
770         vlc_object_release( p_dec );
771         return NULL;
772     }
773     p_owner->i_preroll_end = VLC_TS_INVALID;
774     p_owner->i_last_rate = INPUT_RATE_DEFAULT;
775     p_owner->p_input = p_input;
776     p_owner->p_resource = p_resource;
777     p_owner->p_aout = NULL;
778     p_owner->p_vout = NULL;
779     p_owner->p_spu_vout = NULL;
780     p_owner->i_spu_channel = 0;
781     p_owner->i_spu_order = 0;
782     p_owner->p_sout = p_sout;
783     p_owner->p_sout_input = NULL;
784     p_owner->p_packetizer = NULL;
785     p_owner->b_packetizer = b_packetizer;
786
787     /* decoder fifo */
788     p_owner->p_fifo = block_FifoNew();
789     if( unlikely(p_owner->p_fifo == NULL) )
790     {
791         free( p_owner );
792         vlc_object_release( p_dec );
793         return NULL;
794     }
795
796     /* Set buffers allocation callbacks for the decoders */
797     p_dec->pf_aout_buffer_new = aout_new_buffer;
798     p_dec->pf_vout_buffer_new = vout_new_buffer;
799     p_dec->pf_vout_buffer_del = vout_del_buffer;
800     p_dec->pf_picture_link    = vout_link_picture;
801     p_dec->pf_picture_unlink  = vout_unlink_picture;
802     p_dec->pf_spu_buffer_new  = spu_new_buffer;
803     p_dec->pf_spu_buffer_del  = spu_del_buffer;
804     /* */
805     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
806     p_dec->pf_get_display_date = DecoderGetDisplayDate;
807     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
808
809     /* Find a suitable decoder/packetizer module */
810     if( !b_packetizer )
811         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
812     else
813         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
814
815     /* Check if decoder requires already packetized data */
816     if( !b_packetizer &&
817         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
818     {
819         p_owner->p_packetizer =
820             vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
821         if( p_owner->p_packetizer )
822         {
823             es_format_Copy( &p_owner->p_packetizer->fmt_in,
824                             &p_dec->fmt_in );
825
826             es_format_Copy( &p_owner->p_packetizer->fmt_out,
827                             &null_es_format );
828
829             p_owner->p_packetizer->p_module =
830                 module_need( p_owner->p_packetizer,
831                              "packetizer", "$packetizer", false );
832
833             if( !p_owner->p_packetizer->p_module )
834             {
835                 es_format_Clean( &p_owner->p_packetizer->fmt_in );
836                 vlc_object_release( p_owner->p_packetizer );
837             }
838         }
839     }
840
841     /* Copy ourself the input replay gain */
842     if( fmt->i_cat == AUDIO_ES )
843     {
844         for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
845         {
846             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
847             {
848                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
849                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
850             }
851             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
852             {
853                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
854                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
855             }
856         }
857     }
858
859     /* */
860     vlc_mutex_init( &p_owner->lock );
861     vlc_cond_init( &p_owner->wait_request );
862     vlc_cond_init( &p_owner->wait_acknowledge );
863
864     p_owner->b_fmt_description = false;
865     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
866     p_owner->p_description = NULL;
867
868     p_owner->b_exit = false;
869
870     p_owner->b_paused = false;
871     p_owner->pause.i_date = VLC_TS_INVALID;
872     p_owner->pause.i_ignore = 0;
873
874     p_owner->b_buffering = false;
875     p_owner->buffer.b_first = true;
876     p_owner->buffer.b_full = false;
877     p_owner->buffer.i_count = 0;
878     p_owner->buffer.p_picture = NULL;
879     p_owner->buffer.p_subpic = NULL;
880     p_owner->buffer.p_audio = NULL;
881     p_owner->buffer.p_block = NULL;
882
883     p_owner->b_flushing = false;
884
885     /* */
886     p_owner->cc.b_supported = false;
887     if( !b_packetizer )
888     {
889         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
890             p_owner->cc.b_supported = true;
891         if( p_dec->pf_get_cc )
892             p_owner->cc.b_supported = true;
893     }
894
895     for( unsigned i = 0; i < 4; i++ )
896     {
897         p_owner->cc.pb_present[i] = false;
898         p_owner->cc.pp_decoder[i] = NULL;
899     }
900     p_owner->i_ts_delay = 0;
901     return p_dec;
902 }
903
904 /**
905  * The decoding main loop
906  *
907  * \param p_dec the decoder
908  */
909 static void *DecoderThread( void *p_data )
910 {
911     decoder_t *p_dec = (decoder_t *)p_data;
912     decoder_owner_sys_t *p_owner = p_dec->p_owner;
913
914     /* The decoder's main loop */
915     for( ;; )
916     {
917         block_t *p_block = block_FifoGet( p_owner->p_fifo );
918
919         /* Make sure there is no cancellation point other than this one^^.
920          * If you need one, be sure to push cleanup of p_block. */
921         DecoderSignalBuffering( p_dec, p_block == NULL );
922
923         if( p_block )
924         {
925             int canc = vlc_savecancel();
926
927             if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
928             {
929                 /* calling DecoderProcess() with NULL block will make
930                  * decoders/packetizers flush their buffers */
931                 block_Release( p_block );
932                 p_block = NULL;
933             }
934
935             if( p_dec->b_error )
936                 DecoderError( p_dec, p_block );
937             else
938                 DecoderProcess( p_dec, p_block );
939
940             vlc_restorecancel( canc );
941         }
942     }
943     return NULL;
944 }
945
946 static block_t *DecoderBlockFlushNew()
947 {
948     block_t *p_null = block_Alloc( 128 );
949     if( !p_null )
950         return NULL;
951
952     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
953                        BLOCK_FLAG_CORRUPTED |
954                        BLOCK_FLAG_CORE_FLUSH;
955     memset( p_null->p_buffer, 0, p_null->i_buffer );
956
957     return p_null;
958 }
959
960 static void DecoderFlush( decoder_t *p_dec )
961 {
962     decoder_owner_sys_t *p_owner = p_dec->p_owner;
963
964     vlc_assert_locked( &p_owner->lock );
965
966     /* Empty the fifo */
967     block_FifoEmpty( p_owner->p_fifo );
968
969     /* Monitor for flush end */
970     p_owner->b_flushing = true;
971     vlc_cond_signal( &p_owner->wait_request );
972
973     /* Send a special block */
974     block_t *p_null = DecoderBlockFlushNew();
975     if( !p_null )
976         return;
977     input_DecoderDecode( p_dec, p_null, false );
978
979     /* */
980     while( p_owner->b_flushing )
981         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
982 }
983
984 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
985 {
986     decoder_owner_sys_t *p_owner = p_dec->p_owner;
987
988     vlc_mutex_lock( &p_owner->lock );
989
990     if( p_owner->b_buffering )
991     {
992         if( b_full )
993             p_owner->buffer.b_full = true;
994         vlc_cond_signal( &p_owner->wait_acknowledge );
995     }
996
997     vlc_mutex_unlock( &p_owner->lock );
998 }
999
1000 static bool DecoderIsFlushing( decoder_t *p_dec )
1001 {
1002     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1003     bool b_flushing;
1004
1005     vlc_mutex_lock( &p_owner->lock );
1006
1007     b_flushing = p_owner->b_flushing;
1008
1009     vlc_mutex_unlock( &p_owner->lock );
1010
1011     return b_flushing;
1012 }
1013
1014 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
1015 {
1016     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1017
1018     vlc_assert_locked( &p_owner->lock );
1019
1020     for( ;; )
1021     {
1022         if( p_owner->b_flushing )
1023             break;
1024         if( p_owner->b_paused )
1025         {
1026             if( p_owner->b_buffering && !p_owner->buffer.b_full )
1027                 break;
1028             if( p_owner->pause.i_ignore > 0 )
1029             {
1030                 p_owner->pause.i_ignore--;
1031                 break;
1032             }
1033         }
1034         else
1035         {
1036             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
1037                 break;
1038         }
1039         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1040     }
1041
1042     if( pb_reject )
1043         *pb_reject = p_owner->b_flushing;
1044 }
1045
1046 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1047 {
1048     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1049
1050     vlc_assert_locked( &p_owner->lock );
1051
1052     /* XXX only audio and video output have to be paused.
1053      * - for sout it is useless
1054      * - for subs, it is done by the vout
1055      */
1056     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1057     {
1058         if( p_owner->p_aout )
1059             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1060     }
1061     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1062     {
1063         if( p_owner->p_vout )
1064             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1065     }
1066 }
1067 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1068 {
1069     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1070         *pi_preroll = INT64_MAX;
1071     else if( p->i_dts > VLC_TS_INVALID )
1072         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1073     else if( p->i_pts > VLC_TS_INVALID )
1074         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1075 }
1076
1077 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1078                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1079 {
1080     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1081     input_clock_t   *p_clock = p_owner->p_clock;
1082
1083     vlc_assert_locked( &p_owner->lock );
1084
1085     const mtime_t i_es_delay = p_owner->i_ts_delay;
1086
1087     if( !p_clock )
1088         return;
1089
1090     const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1091     int i_rate;
1092
1093     if( *pi_ts0 > VLC_TS_INVALID )
1094     {
1095         *pi_ts0 += i_es_delay;
1096         if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1097             *pi_ts1 += i_es_delay;
1098         if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1099             *pi_ts0 = VLC_TS_INVALID;
1100     }
1101     else
1102     {
1103         i_rate = input_clock_GetRate( p_clock );
1104     }
1105
1106     /* Do not create ephemere data because of rounding errors */
1107     if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1108         *pi_ts1 += 1;
1109
1110     if( pi_duration )
1111         *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1112             / INPUT_RATE_DEFAULT;
1113
1114     if( pi_rate )
1115         *pi_rate = i_rate;
1116 }
1117
1118 static bool DecoderIsExitRequested( decoder_t *p_dec )
1119 {
1120     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1121
1122     vlc_mutex_lock( &p_owner->lock );
1123     bool b_exit = p_owner->b_exit;
1124     vlc_mutex_unlock( &p_owner->lock );
1125
1126     return b_exit;
1127 }
1128
1129 /**
1130  * If *pb_reject, it does nothing, otherwise it waits for the given
1131  * deadline or a flush request (in which case it set *pi_reject to true.
1132  */
1133 static void DecoderWaitDate( decoder_t *p_dec,
1134                              bool *pb_reject, mtime_t i_deadline )
1135 {
1136     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1137
1138     vlc_assert_locked( &p_owner->lock );
1139
1140     if( *pb_reject || i_deadline < 0 )
1141         return;
1142
1143     do
1144     {
1145         if( p_owner->b_flushing || p_owner->b_exit )
1146         {
1147             *pb_reject = true;
1148             break;
1149         }
1150     }
1151     while( vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1152                                i_deadline ) == 0 );
1153 }
1154
1155 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1156                               int *pi_played_sum, int *pi_lost_sum )
1157 {
1158     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1159     audio_output_t *p_aout = p_owner->p_aout;
1160
1161     /* */
1162     if( p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1163     {
1164         msg_Warn( p_dec, "non-dated audio buffer received" );
1165         *pi_lost_sum += 1;
1166         aout_BufferFree( p_audio );
1167         return;
1168     }
1169
1170     /* */
1171     vlc_mutex_lock( &p_owner->lock );
1172
1173     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1174     {
1175         p_audio->p_next = NULL;
1176
1177         *p_owner->buffer.pp_audio_next = p_audio;
1178         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1179
1180         p_owner->buffer.i_count++;
1181         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1182             p_audio->i_pts - p_owner->buffer.p_audio->i_pts > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1183         {
1184             p_owner->buffer.b_full = true;
1185             vlc_cond_signal( &p_owner->wait_acknowledge );
1186         }
1187     }
1188
1189     for( ;; )
1190     {
1191         bool b_has_more = false, b_paused, b_reject;
1192
1193         DecoderWaitUnblock( p_dec, &b_reject );
1194         if( p_owner->b_buffering )
1195             break;
1196
1197         b_paused = p_owner->b_paused;
1198
1199         /* */
1200         if( p_owner->buffer.p_audio )
1201         {
1202             p_audio = p_owner->buffer.p_audio;
1203
1204             p_owner->buffer.p_audio = p_audio->p_next;
1205             p_owner->buffer.i_count--;
1206
1207             b_has_more = p_owner->buffer.p_audio != NULL;
1208             if( !b_has_more )
1209                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1210         }
1211
1212         /* */
1213         int i_rate = INPUT_RATE_DEFAULT;
1214
1215         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1216                       &i_rate, AOUT_MAX_ADVANCE_TIME );
1217
1218         if( p_audio->i_pts <= VLC_TS_INVALID
1219          || i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE
1220          || i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1221             b_reject = true;
1222
1223         DecoderWaitDate( p_dec, &b_reject,
1224                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1225
1226         if( unlikely(p_owner->b_paused != b_paused) )
1227             continue; /* race with input thread? retry... */
1228         if( p_aout == NULL )
1229             b_reject = true;
1230
1231         if( !b_reject )
1232         {
1233             assert( !p_owner->b_paused );
1234             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1235                 *pi_played_sum += 1;
1236             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1237         }
1238         else
1239         {
1240             msg_Dbg( p_dec, "discarded audio buffer" );
1241             *pi_lost_sum += 1;
1242             aout_BufferFree( p_audio );
1243         }
1244
1245         if( !b_has_more )
1246             break;
1247         if( !p_owner->buffer.p_audio )
1248             break;
1249     }
1250     vlc_mutex_unlock( &p_owner->lock );
1251 }
1252
1253 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1254 {
1255     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1256     aout_buffer_t   *p_aout_buf;
1257     int i_decoded = 0;
1258     int i_lost = 0;
1259     int i_played = 0;
1260
1261     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1262     {
1263         audio_output_t *p_aout = p_owner->p_aout;
1264
1265         if( DecoderIsExitRequested( p_dec ) )
1266         {
1267             /* It prevent freezing VLC in case of broken decoder */
1268             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1269             if( p_block )
1270                 block_Release( p_block );
1271             break;
1272         }
1273         i_decoded++;
1274
1275         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1276             p_aout_buf->i_pts < p_owner->i_preroll_end )
1277         {
1278             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1279             continue;
1280         }
1281
1282         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1283         {
1284             msg_Dbg( p_dec, "End of audio preroll" );
1285             if( p_owner->p_aout )
1286                 aout_DecFlush( p_owner->p_aout );
1287             /* */
1288             p_owner->i_preroll_end = VLC_TS_INVALID;
1289         }
1290
1291         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1292     }
1293
1294     /* Update ugly stat */
1295     input_thread_t  *p_input = p_owner->p_input;
1296
1297     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1298     {
1299         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1300         stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1301         stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1302         stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1303         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1304     }
1305 }
1306 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1307 {
1308     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1309     block_t *p_cc;
1310     bool pb_present[4];
1311     bool b_processed = false;
1312     int i;
1313     int i_cc_decoder;
1314
1315     assert( p_dec_cc->pf_get_cc != NULL );
1316
1317     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1318     if( !p_owner->cc.b_supported )
1319         return;
1320
1321     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1322     if( !p_cc )
1323         return;
1324
1325     vlc_mutex_lock( &p_owner->lock );
1326     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1327     {
1328         p_owner->cc.pb_present[i] |= pb_present[i];
1329         if( p_owner->cc.pp_decoder[i] )
1330             i_cc_decoder++;
1331     }
1332
1333     for( i = 0; i < 4; i++ )
1334     {
1335         if( !p_owner->cc.pp_decoder[i] )
1336             continue;
1337
1338         if( i_cc_decoder > 1 )
1339             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1340         else
1341             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1342         i_cc_decoder--;
1343         b_processed = true;
1344     }
1345     vlc_mutex_unlock( &p_owner->lock );
1346
1347     if( !b_processed )
1348         block_Release( p_cc );
1349 }
1350
1351 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1352                               int *pi_played_sum, int *pi_lost_sum )
1353 {
1354     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1355     vout_thread_t  *p_vout = p_owner->p_vout;
1356     bool b_first_buffered;
1357
1358     if( p_picture->date <= VLC_TS_INVALID )
1359     {
1360         msg_Warn( p_dec, "non-dated video buffer received" );
1361         *pi_lost_sum += 1;
1362         vout_ReleasePicture( p_vout, p_picture );
1363         return;
1364     }
1365
1366     /* */
1367     vlc_mutex_lock( &p_owner->lock );
1368
1369     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1370     {
1371         p_picture->p_next = NULL;
1372
1373         *p_owner->buffer.pp_picture_next = p_picture;
1374         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1375
1376         p_owner->buffer.i_count++;
1377         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1378             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1379         {
1380             p_owner->buffer.b_full = true;
1381             vlc_cond_signal( &p_owner->wait_acknowledge );
1382         }
1383     }
1384     b_first_buffered = p_owner->buffer.p_picture != NULL;
1385
1386     for( ;; b_first_buffered = false )
1387     {
1388         bool b_has_more = false;
1389
1390         bool b_reject;
1391
1392         DecoderWaitUnblock( p_dec, &b_reject );
1393
1394         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1395         {
1396             vlc_mutex_unlock( &p_owner->lock );
1397             return;
1398         }
1399         bool b_buffering_first = p_owner->b_buffering;
1400
1401         /* */
1402         if( p_owner->buffer.p_picture )
1403         {
1404             p_picture = p_owner->buffer.p_picture;
1405
1406             p_owner->buffer.p_picture = p_picture->p_next;
1407             p_owner->buffer.i_count--;
1408
1409             b_has_more = p_owner->buffer.p_picture != NULL;
1410             if( !b_has_more )
1411                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1412         }
1413
1414         /* */
1415         if( b_buffering_first )
1416         {
1417             assert( p_owner->buffer.b_first );
1418             assert( !p_owner->buffer.i_count );
1419             msg_Dbg( p_dec, "Received first picture" );
1420             p_owner->buffer.b_first = false;
1421             p_picture->b_force = true;
1422         }
1423
1424         const bool b_dated = p_picture->date > VLC_TS_INVALID;
1425         int i_rate = INPUT_RATE_DEFAULT;
1426         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1427                       &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1428
1429         vlc_mutex_unlock( &p_owner->lock );
1430
1431         /* */
1432         if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1433             b_reject = true;
1434
1435         if( !b_reject )
1436         {
1437             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1438             {
1439                 /* Be sure to not display old picture after our own */
1440                 vout_Flush( p_vout, p_picture->date );
1441                 p_owner->i_last_rate = i_rate;
1442             }
1443             vout_PutPicture( p_vout, p_picture );
1444         }
1445         else
1446         {
1447             if( b_dated )
1448                 msg_Warn( p_dec, "early picture skipped" );
1449             else
1450                 msg_Warn( p_dec, "non-dated video buffer received" );
1451
1452             *pi_lost_sum += 1;
1453             vout_ReleasePicture( p_vout, p_picture );
1454         }
1455         int i_tmp_display;
1456         int i_tmp_lost;
1457         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1458
1459         *pi_played_sum += i_tmp_display;
1460         *pi_lost_sum += i_tmp_lost;
1461
1462         if( !b_has_more || b_buffering_first )
1463             break;
1464
1465         vlc_mutex_lock( &p_owner->lock );
1466         if( !p_owner->buffer.p_picture )
1467         {
1468             vlc_mutex_unlock( &p_owner->lock );
1469             break;
1470         }
1471     }
1472 }
1473
1474 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1475 {
1476     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1477     picture_t      *p_pic;
1478     int i_lost = 0;
1479     int i_decoded = 0;
1480     int i_displayed = 0;
1481
1482     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1483     {
1484         vout_thread_t  *p_vout = p_owner->p_vout;
1485         if( DecoderIsExitRequested( p_dec ) )
1486         {
1487             /* It prevent freezing VLC in case of broken decoder */
1488             vout_ReleasePicture( p_vout, p_pic );
1489             if( p_block )
1490                 block_Release( p_block );
1491             break;
1492         }
1493
1494         i_decoded++;
1495
1496         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1497         {
1498             vout_ReleasePicture( p_vout, p_pic );
1499             continue;
1500         }
1501
1502         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1503         {
1504             msg_Dbg( p_dec, "End of video preroll" );
1505             if( p_vout )
1506                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1507             /* */
1508             p_owner->i_preroll_end = VLC_TS_INVALID;
1509         }
1510
1511         if( p_dec->pf_get_cc &&
1512             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1513             DecoderGetCc( p_dec, p_dec );
1514
1515         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1516     }
1517
1518     /* Update ugly stat */
1519     input_thread_t *p_input = p_owner->p_input;
1520
1521     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1522     {
1523         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1524         stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1525         stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1526         stats_Update( p_input->p->counters.p_displayed_pictures,
1527                       i_displayed, NULL);
1528         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1529     }
1530 }
1531
1532 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1533 {
1534     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1535     vout_thread_t *p_vout = p_owner->p_spu_vout;
1536
1537     /* */
1538     if( p_subpic->i_start <= VLC_TS_INVALID )
1539     {
1540         msg_Warn( p_dec, "non-dated spu buffer received" );
1541         subpicture_Delete( p_subpic );
1542         return;
1543     }
1544
1545     /* */
1546     vlc_mutex_lock( &p_owner->lock );
1547
1548     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1549     {
1550         p_subpic->p_next = NULL;
1551
1552         *p_owner->buffer.pp_subpic_next = p_subpic;
1553         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1554
1555         p_owner->buffer.i_count++;
1556         /* XXX it is important to be full after the first one */
1557         if( p_owner->buffer.i_count > 0 )
1558         {
1559             p_owner->buffer.b_full = true;
1560             vlc_cond_signal( &p_owner->wait_acknowledge );
1561         }
1562     }
1563
1564     for( ;; )
1565     {
1566         bool b_has_more = false;
1567         bool b_reject;
1568         DecoderWaitUnblock( p_dec, &b_reject );
1569
1570         if( p_owner->b_buffering )
1571         {
1572             vlc_mutex_unlock( &p_owner->lock );
1573             return;
1574         }
1575
1576         /* */
1577         if( p_owner->buffer.p_subpic )
1578         {
1579             p_subpic = p_owner->buffer.p_subpic;
1580
1581             p_owner->buffer.p_subpic = p_subpic->p_next;
1582             p_owner->buffer.i_count--;
1583
1584             b_has_more = p_owner->buffer.p_subpic != NULL;
1585             if( !b_has_more )
1586                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1587         }
1588
1589         /* */
1590         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1591                       NULL, INT64_MAX );
1592
1593         if( p_subpic->i_start <= VLC_TS_INVALID )
1594             b_reject = true;
1595
1596         DecoderWaitDate( p_dec, &b_reject,
1597                          p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1598         vlc_mutex_unlock( &p_owner->lock );
1599
1600         if( !b_reject )
1601             vout_PutSubpicture( p_vout, p_subpic );
1602         else
1603             subpicture_Delete( p_subpic );
1604
1605         if( !b_has_more )
1606             break;
1607         vlc_mutex_lock( &p_owner->lock );
1608         if( !p_owner->buffer.p_subpic )
1609         {
1610             vlc_mutex_unlock( &p_owner->lock );
1611             break;
1612         }
1613     }
1614 }
1615
1616 #ifdef ENABLE_SOUT
1617 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1618 {
1619     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1620
1621     assert( p_owner->p_clock );
1622     assert( !p_sout_block->p_next );
1623
1624     vlc_mutex_lock( &p_owner->lock );
1625
1626     if( p_owner->b_buffering || p_owner->buffer.p_block )
1627     {
1628         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1629
1630         p_owner->buffer.i_count++;
1631         /* XXX it is important to be full after the first one */
1632         if( p_owner->buffer.i_count > 0 )
1633         {
1634             p_owner->buffer.b_full = true;
1635             vlc_cond_signal( &p_owner->wait_acknowledge );
1636         }
1637     }
1638
1639     for( ;; )
1640     {
1641         bool b_has_more = false;
1642         bool b_reject;
1643         DecoderWaitUnblock( p_dec, &b_reject );
1644
1645         if( p_owner->b_buffering )
1646         {
1647             vlc_mutex_unlock( &p_owner->lock );
1648             return;
1649         }
1650
1651         /* */
1652         if( p_owner->buffer.p_block )
1653         {
1654             p_sout_block = p_owner->buffer.p_block;
1655
1656             p_owner->buffer.p_block = p_sout_block->p_next;
1657             p_owner->buffer.i_count--;
1658
1659             b_has_more = p_owner->buffer.p_block != NULL;
1660             if( !b_has_more )
1661                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1662         }
1663         p_sout_block->p_next = NULL;
1664
1665         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1666                       &p_sout_block->i_length, NULL, INT64_MAX );
1667
1668         vlc_mutex_unlock( &p_owner->lock );
1669
1670         if( !b_reject )
1671             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block ); // FIXME --VLC_TS_INVALID inspect stream_output/*
1672         else
1673             block_Release( p_sout_block );
1674
1675         if( !b_has_more )
1676             break;
1677         vlc_mutex_lock( &p_owner->lock );
1678         if( !p_owner->buffer.p_block )
1679         {
1680             vlc_mutex_unlock( &p_owner->lock );
1681             break;
1682         }
1683     }
1684 }
1685 #endif
1686
1687 /* */
1688 static void DecoderFlushBuffering( decoder_t *p_dec )
1689 {
1690     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1691
1692     vlc_assert_locked( &p_owner->lock );
1693
1694     while( p_owner->buffer.p_picture )
1695     {
1696         picture_t *p_picture = p_owner->buffer.p_picture;
1697
1698         p_owner->buffer.p_picture = p_picture->p_next;
1699         p_owner->buffer.i_count--;
1700
1701         if( p_owner->p_vout )
1702         {
1703             vout_ReleasePicture( p_owner->p_vout, p_picture );
1704         }
1705
1706         if( !p_owner->buffer.p_picture )
1707             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1708     }
1709     while( p_owner->buffer.p_audio )
1710     {
1711         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1712
1713         p_owner->buffer.p_audio = p_audio->p_next;
1714         p_owner->buffer.i_count--;
1715
1716         aout_BufferFree( p_audio );
1717
1718         if( !p_owner->buffer.p_audio )
1719             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1720     }
1721     while( p_owner->buffer.p_subpic )
1722     {
1723         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1724
1725         p_owner->buffer.p_subpic = p_subpic->p_next;
1726         p_owner->buffer.i_count--;
1727
1728         subpicture_Delete( p_subpic );
1729
1730         if( !p_owner->buffer.p_subpic )
1731             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1732     }
1733     if( p_owner->buffer.p_block )
1734     {
1735         block_ChainRelease( p_owner->buffer.p_block );
1736
1737         p_owner->buffer.i_count = 0;
1738         p_owner->buffer.p_block = NULL;
1739         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1740     }
1741 }
1742
1743 #ifdef ENABLE_SOUT
1744 /* This function process a block for sout
1745  */
1746 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1747 {
1748     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1749     block_t *p_sout_block;
1750
1751     while( ( p_sout_block =
1752                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1753     {
1754         if( !p_owner->p_sout_input )
1755         {
1756             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1757
1758             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1759             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1760             if( p_dec->fmt_in.psz_language )
1761             {
1762                 free( p_owner->sout.psz_language );
1763                 p_owner->sout.psz_language =
1764                     strdup( p_dec->fmt_in.psz_language );
1765             }
1766
1767             p_owner->p_sout_input =
1768                 sout_InputNew( p_owner->p_sout,
1769                                &p_owner->sout );
1770
1771             if( p_owner->p_sout_input == NULL )
1772             {
1773                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1774                          (char *)&p_owner->sout.i_codec );
1775                 p_dec->b_error = true;
1776
1777                 while( p_sout_block )
1778                 {
1779                     block_t *p_next = p_sout_block->p_next;
1780                     block_Release( p_sout_block );
1781                     p_sout_block = p_next;
1782                 }
1783                 break;
1784             }
1785         }
1786
1787         while( p_sout_block )
1788         {
1789             block_t *p_next = p_sout_block->p_next;
1790
1791             p_sout_block->p_next = NULL;
1792
1793             DecoderPlaySout( p_dec, p_sout_block );
1794
1795             p_sout_block = p_next;
1796         }
1797     }
1798 }
1799 #endif
1800
1801 /* This function process a video block
1802  */
1803 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1804 {
1805     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1806
1807     if( p_owner->p_packetizer )
1808     {
1809         block_t *p_packetized_block;
1810         decoder_t *p_packetizer = p_owner->p_packetizer;
1811
1812         while( (p_packetized_block =
1813                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1814         {
1815             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1816             {
1817                 es_format_Clean( &p_dec->fmt_in );
1818                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1819             }
1820             if( p_packetizer->pf_get_cc )
1821                 DecoderGetCc( p_dec, p_packetizer );
1822
1823             while( p_packetized_block )
1824             {
1825                 block_t *p_next = p_packetized_block->p_next;
1826                 p_packetized_block->p_next = NULL;
1827
1828                 DecoderDecodeVideo( p_dec, p_packetized_block );
1829
1830                 p_packetized_block = p_next;
1831             }
1832         }
1833         /* The packetizer does not output a block that tell the decoder to flush
1834          * do it ourself */
1835         if( b_flush )
1836         {
1837             block_t *p_null = DecoderBlockFlushNew();
1838             if( p_null )
1839                 DecoderDecodeVideo( p_dec, p_null );
1840         }
1841     }
1842     else if( p_block )
1843     {
1844         DecoderDecodeVideo( p_dec, p_block );
1845     }
1846
1847     if( b_flush && p_owner->p_vout )
1848         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1849 }
1850
1851 /* This function process a audio block
1852  */
1853 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1854 {
1855     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1856
1857     if( p_owner->p_packetizer )
1858     {
1859         block_t *p_packetized_block;
1860         decoder_t *p_packetizer = p_owner->p_packetizer;
1861
1862         while( (p_packetized_block =
1863                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1864         {
1865             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1866             {
1867                 es_format_Clean( &p_dec->fmt_in );
1868                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1869             }
1870
1871             while( p_packetized_block )
1872             {
1873                 block_t *p_next = p_packetized_block->p_next;
1874                 p_packetized_block->p_next = NULL;
1875
1876                 DecoderDecodeAudio( p_dec, p_packetized_block );
1877
1878                 p_packetized_block = p_next;
1879             }
1880         }
1881         /* The packetizer does not output a block that tell the decoder to flush
1882          * do it ourself */
1883         if( b_flush )
1884         {
1885             block_t *p_null = DecoderBlockFlushNew();
1886             if( p_null )
1887                 DecoderDecodeAudio( p_dec, p_null );
1888         }
1889     }
1890     else if( p_block )
1891     {
1892         DecoderDecodeAudio( p_dec, p_block );
1893     }
1894
1895     if( b_flush && p_owner->p_aout )
1896         aout_DecFlush( p_owner->p_aout );
1897 }
1898
1899 /* This function process a subtitle block
1900  */
1901 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1902 {
1903     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1904
1905     input_thread_t *p_input = p_owner->p_input;
1906     vout_thread_t *p_vout;
1907     subpicture_t *p_spu;
1908
1909     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1910     {
1911         if( p_input != NULL )
1912         {
1913             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1914             stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1915             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1916         }
1917
1918         p_vout = input_resource_HoldVout( p_owner->p_resource );
1919         if( p_vout && p_owner->p_spu_vout == p_vout )
1920         {
1921             /* Preroll does not work very well with subtitle */
1922             if( p_spu->i_start > VLC_TS_INVALID &&
1923                 p_spu->i_start < p_owner->i_preroll_end &&
1924                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1925             {
1926                 subpicture_Delete( p_spu );
1927             }
1928             else
1929             {
1930                 DecoderPlaySpu( p_dec, p_spu );
1931             }
1932         }
1933         else
1934         {
1935             subpicture_Delete( p_spu );
1936         }
1937         if( p_vout )
1938             vlc_object_release( p_vout );
1939     }
1940
1941     if( b_flush && p_owner->p_spu_vout )
1942     {
1943         p_vout = input_resource_HoldVout( p_owner->p_resource );
1944
1945         if( p_vout && p_owner->p_spu_vout == p_vout )
1946             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1947
1948         if( p_vout )
1949             vlc_object_release( p_vout );
1950     }
1951 }
1952
1953 /* */
1954 static void DecoderProcessOnFlush( decoder_t *p_dec )
1955 {
1956     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1957
1958     vlc_mutex_lock( &p_owner->lock );
1959     DecoderFlushBuffering( p_dec );
1960
1961     if( p_owner->b_flushing )
1962     {
1963         p_owner->b_flushing = false;
1964         vlc_cond_signal( &p_owner->wait_acknowledge );
1965     }
1966     vlc_mutex_unlock( &p_owner->lock );
1967 }
1968
1969 /**
1970  * Decode a block
1971  *
1972  * \param p_dec the decoder object
1973  * \param p_block the block to decode
1974  * \return VLC_SUCCESS or an error code
1975  */
1976 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1977 {
1978     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1979     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1980
1981     if( p_block && p_block->i_buffer <= 0 )
1982     {
1983         assert( !b_flush_request );
1984         block_Release( p_block );
1985         return;
1986     }
1987
1988 #ifdef ENABLE_SOUT
1989     if( p_owner->b_packetizer )
1990     {
1991         if( p_block )
1992             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1993
1994         DecoderProcessSout( p_dec, p_block );
1995     }
1996     else
1997 #endif
1998     {
1999         bool b_flush = false;
2000
2001         if( p_block )
2002         {
2003             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
2004             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
2005
2006             b_flush = !b_flushing && b_flush_request;
2007
2008             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2009         }
2010
2011         if( p_dec->fmt_out.i_cat == AUDIO_ES )
2012         {
2013             DecoderProcessAudio( p_dec, p_block, b_flush );
2014         }
2015         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
2016         {
2017             DecoderProcessVideo( p_dec, p_block, b_flush );
2018         }
2019         else if( p_dec->fmt_out.i_cat == SPU_ES )
2020         {
2021             DecoderProcessSpu( p_dec, p_block, b_flush );
2022         }
2023         else
2024         {
2025             msg_Err( p_dec, "unknown ES format" );
2026             p_dec->b_error = true;
2027         }
2028     }
2029
2030     /* */
2031     if( b_flush_request )
2032         DecoderProcessOnFlush( p_dec );
2033 }
2034
2035 static void DecoderError( decoder_t *p_dec, block_t *p_block )
2036 {
2037     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2038
2039     /* */
2040     if( p_block )
2041         block_Release( p_block );
2042
2043     if( b_flush_request )
2044         DecoderProcessOnFlush( p_dec );
2045 }
2046
2047
2048 /**
2049  * Destroys a decoder object
2050  *
2051  * \param p_dec the decoder object
2052  * \return nothing
2053  */
2054 static void DeleteDecoder( decoder_t * p_dec )
2055 {
2056     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2057
2058     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2059              (char*)&p_dec->fmt_in.i_codec,
2060              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2061
2062     /* Free all packets still in the decoder fifo. */
2063     block_FifoEmpty( p_owner->p_fifo );
2064     block_FifoRelease( p_owner->p_fifo );
2065
2066     /* */
2067     vlc_mutex_lock( &p_owner->lock );
2068     DecoderFlushBuffering( p_dec );
2069     vlc_mutex_unlock( &p_owner->lock );
2070
2071     /* Cleanup */
2072     if( p_owner->p_aout )
2073     {
2074         /* TODO: REVISIT gap-less audio */
2075         aout_DecFlush( p_owner->p_aout );
2076         aout_DecDelete( p_owner->p_aout );
2077         input_resource_RequestAout( p_owner->p_resource, p_owner->p_aout );
2078         if( p_owner->p_input != NULL )
2079             input_SendEventAout( p_owner->p_input );
2080     }
2081     if( p_owner->p_vout )
2082     {
2083         /* Hack to make sure all the the pictures are freed by the decoder
2084          * and that the vout is not paused anymore */
2085         vout_Reset( p_owner->p_vout );
2086
2087         /* */
2088         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
2089                                     0, true );
2090         if( p_owner->p_input != NULL )
2091             input_SendEventVout( p_owner->p_input );
2092     }
2093
2094 #ifdef ENABLE_SOUT
2095     if( p_owner->p_sout_input )
2096     {
2097         sout_InputDelete( p_owner->p_sout_input );
2098         es_format_Clean( &p_owner->sout );
2099     }
2100 #endif
2101
2102     if( p_dec->fmt_out.i_cat == SPU_ES )
2103     {
2104         vout_thread_t *p_vout;
2105
2106         p_vout = input_resource_HoldVout( p_owner->p_resource );
2107         if( p_vout )
2108         {
2109             if( p_owner->p_spu_vout == p_vout )
2110                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
2111             vlc_object_release( p_vout );
2112         }
2113     }
2114
2115     es_format_Clean( &p_dec->fmt_in );
2116     es_format_Clean( &p_dec->fmt_out );
2117     if( p_dec->p_description )
2118         vlc_meta_Delete( p_dec->p_description );
2119     es_format_Clean( &p_owner->fmt_description );
2120     if( p_owner->p_description )
2121         vlc_meta_Delete( p_owner->p_description );
2122
2123     if( p_owner->p_packetizer )
2124     {
2125         module_unneed( p_owner->p_packetizer,
2126                        p_owner->p_packetizer->p_module );
2127         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2128         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2129         if( p_owner->p_packetizer->p_description )
2130             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2131         vlc_object_release( p_owner->p_packetizer );
2132     }
2133
2134     vlc_cond_destroy( &p_owner->wait_acknowledge );
2135     vlc_cond_destroy( &p_owner->wait_request );
2136     vlc_mutex_destroy( &p_owner->lock );
2137
2138     vlc_object_release( p_dec );
2139
2140     free( p_owner );
2141 }
2142
2143 /*****************************************************************************
2144  * Buffers allocation callbacks for the decoders
2145  *****************************************************************************/
2146 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2147 {
2148     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2149
2150     vlc_assert_locked( &p_owner->lock );
2151
2152     p_owner->b_fmt_description = true;
2153
2154     /* Copy es_format */
2155     es_format_Clean( &p_owner->fmt_description );
2156     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2157
2158     /* Move p_description */
2159     if( p_owner->p_description && p_dec->p_description )
2160         vlc_meta_Delete( p_owner->p_description );
2161     p_owner->p_description = p_dec->p_description;
2162     p_dec->p_description = NULL;
2163 }
2164 static vout_thread_t *aout_request_vout( void *p_private,
2165                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
2166 {
2167     decoder_t *p_dec = p_private;
2168     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2169     input_thread_t *p_input = p_owner->p_input;
2170
2171     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
2172                                          b_recyle );
2173     if( p_input != NULL )
2174         input_SendEventVout( p_input );
2175
2176     return p_vout;
2177 }
2178
2179 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2180 {
2181     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2182     aout_buffer_t *p_buffer;
2183
2184     if( p_owner->p_aout
2185      && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->audio) )
2186     {
2187         audio_output_t *p_aout = p_owner->p_aout;
2188
2189         /* Parameters changed, restart the aout */
2190         vlc_mutex_lock( &p_owner->lock );
2191
2192         DecoderFlushBuffering( p_dec );
2193
2194         aout_DecDelete( p_owner->p_aout );
2195         p_owner->p_aout = NULL;
2196
2197         vlc_mutex_unlock( &p_owner->lock );
2198         input_resource_RequestAout( p_owner->p_resource, p_aout );
2199     }
2200
2201     if( p_owner->p_aout == NULL )
2202     {
2203         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
2204         audio_sample_format_t format;
2205         audio_output_t *p_aout;
2206         aout_request_vout_t request_vout;
2207
2208         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2209         p_owner->audio = p_dec->fmt_out.audio;
2210
2211         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2212         if( i_force_dolby &&
2213             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2214                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2215         {
2216             if( i_force_dolby == 1 )
2217             {
2218                 format.i_original_channels = format.i_original_channels |
2219                                              AOUT_CHAN_DOLBYSTEREO;
2220             }
2221             else /* i_force_dolby == 2 */
2222             {
2223                 format.i_original_channels = format.i_original_channels &
2224                                              ~AOUT_CHAN_DOLBYSTEREO;
2225             }
2226         }
2227
2228         request_vout.pf_request_vout = aout_request_vout;
2229         request_vout.p_private = p_dec;
2230
2231         assert( p_owner->p_aout == NULL );
2232         p_aout = input_resource_RequestAout( p_owner->p_resource, NULL );
2233         if( p_aout )
2234         {
2235             aout_FormatPrepare( &format );
2236             if( aout_DecNew( p_aout, &format,
2237                              &p_dec->fmt_out.audio_replay_gain,
2238                              &request_vout ) )
2239             {
2240                 input_resource_RequestAout( p_owner->p_resource, p_aout );
2241                 p_aout = NULL;
2242             }
2243         }
2244
2245         vlc_mutex_lock( &p_owner->lock );
2246
2247         p_owner->p_aout = p_aout;
2248         DecoderUpdateFormatLocked( p_dec );
2249         if( unlikely(p_owner->b_paused) ) /* fake pause if needed */
2250             aout_DecChangePause( p_aout, true, mdate() );
2251
2252         vlc_mutex_unlock( &p_owner->lock );
2253
2254         if( p_owner->p_input != NULL )
2255             input_SendEventAout( p_owner->p_input );
2256
2257         if( p_aout == NULL )
2258         {
2259             msg_Err( p_dec, "failed to create audio output" );
2260             p_dec->b_error = true;
2261             return NULL;
2262         }
2263         p_dec->fmt_out.audio.i_bytes_per_frame =
2264             p_owner->audio.i_bytes_per_frame;
2265     }
2266
2267     p_buffer = aout_DecNewBuffer( p_owner->p_aout, i_samples );
2268
2269     return p_buffer;
2270 }
2271
2272 static picture_t *vout_new_buffer( decoder_t *p_dec )
2273 {
2274     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2275
2276     if( p_owner->p_vout == NULL ||
2277         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2278         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2279         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2280         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2281         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2282         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2283         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2284         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2285         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num )
2286     {
2287         vout_thread_t *p_vout;
2288
2289         if( !p_dec->fmt_out.video.i_width ||
2290             !p_dec->fmt_out.video.i_height )
2291         {
2292             /* Can't create a new vout without display size */
2293             return NULL;
2294         }
2295
2296         video_format_t fmt = p_dec->fmt_out.video;
2297         fmt.i_chroma = p_dec->fmt_out.i_codec;
2298         p_owner->video = fmt;
2299
2300         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2301         {
2302             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2303             for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2304             {
2305                 while( fmt.i_width % dsc->p[i].w.den )
2306                     fmt.i_width++;
2307                 while( fmt.i_height % dsc->p[i].h.den )
2308                     fmt.i_height++;
2309             }
2310         }
2311
2312         if( !fmt.i_visible_width || !fmt.i_visible_height )
2313         {
2314             if( p_dec->fmt_in.video.i_visible_width &&
2315                 p_dec->fmt_in.video.i_visible_height )
2316             {
2317                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2318                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2319                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2320                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2321             }
2322             else
2323             {
2324                 fmt.i_visible_width  = fmt.i_width;
2325                 fmt.i_visible_height = fmt.i_height;
2326                 fmt.i_x_offset       = 0;
2327                 fmt.i_y_offset       = 0;
2328             }
2329         }
2330
2331         if( fmt.i_visible_height == 1088 &&
2332             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2333         {
2334             fmt.i_visible_height = 1080;
2335             if( !(fmt.i_sar_num % 136))
2336             {
2337                 fmt.i_sar_num *= 135;
2338                 fmt.i_sar_den *= 136;
2339             }
2340             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2341         }
2342
2343         if( !fmt.i_sar_num || !fmt.i_sar_den )
2344         {
2345             fmt.i_sar_num = 1;
2346             fmt.i_sar_den = 1;
2347         }
2348
2349         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2350                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2351
2352         vlc_mutex_lock( &p_owner->lock );
2353
2354         DecoderFlushBuffering( p_dec );
2355
2356         p_vout = p_owner->p_vout;
2357         p_owner->p_vout = NULL;
2358         vlc_mutex_unlock( &p_owner->lock );
2359
2360         unsigned dpb_size;
2361         switch( p_dec->fmt_in.i_codec )
2362         {
2363         case VLC_CODEC_H264:
2364         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2365             dpb_size = 18;
2366             break;
2367         case VLC_CODEC_VP5:
2368         case VLC_CODEC_VP6:
2369         case VLC_CODEC_VP6F:
2370         case VLC_CODEC_VP8:
2371             dpb_size = 3;
2372             break;
2373         default:
2374             dpb_size = 2;
2375             break;
2376         }
2377         p_vout = input_resource_RequestVout( p_owner->p_resource,
2378                                              p_vout, &fmt,
2379                                              dpb_size +
2380                                              p_dec->i_extra_picture_buffers +
2381                                              1 + DECODER_MAX_BUFFERING_COUNT,
2382                                              true );
2383         vlc_mutex_lock( &p_owner->lock );
2384         p_owner->p_vout = p_vout;
2385
2386         DecoderUpdateFormatLocked( p_dec );
2387
2388         vlc_mutex_unlock( &p_owner->lock );
2389
2390         if( p_owner->p_input != NULL )
2391             input_SendEventVout( p_owner->p_input );
2392         if( p_vout == NULL )
2393         {
2394             msg_Err( p_dec, "failed to create video output" );
2395             p_dec->b_error = true;
2396             return NULL;
2397         }
2398     }
2399
2400     /* Get a new picture
2401      */
2402     for( ;; )
2403     {
2404         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2405             return NULL;
2406
2407         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2408         if( p_picture )
2409             return p_picture;
2410
2411         if( DecoderIsFlushing( p_dec ) )
2412             return NULL;
2413
2414         /* */
2415         DecoderSignalBuffering( p_dec, true );
2416
2417         /* Check the decoder doesn't leak pictures */
2418         vout_FixLeaks( p_owner->p_vout );
2419
2420         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2421         msleep( VOUT_OUTMEM_SLEEP );
2422     }
2423 }
2424
2425 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2426 {
2427     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2428 }
2429
2430 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2431 {
2432     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2433 }
2434
2435 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2436 {
2437     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2438 }
2439
2440 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2441                                      const subpicture_updater_t *p_updater )
2442 {
2443     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2444     vout_thread_t *p_vout = NULL;
2445     subpicture_t *p_subpic;
2446     int i_attempts = 30;
2447
2448     while( i_attempts-- )
2449     {
2450         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2451             break;
2452
2453         p_vout = input_resource_HoldVout( p_owner->p_resource );
2454         if( p_vout )
2455             break;
2456
2457         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2458     }
2459
2460     if( !p_vout )
2461     {
2462         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2463         return NULL;
2464     }
2465
2466     if( p_owner->p_spu_vout != p_vout )
2467     {
2468         vlc_mutex_lock( &p_owner->lock );
2469
2470         DecoderFlushBuffering( p_dec );
2471
2472         vlc_mutex_unlock( &p_owner->lock );
2473
2474         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2475         p_owner->i_spu_order = 0;
2476         p_owner->p_spu_vout = p_vout;
2477     }
2478
2479     p_subpic = subpicture_New( p_updater );
2480     if( p_subpic )
2481     {
2482         p_subpic->i_channel = p_owner->i_spu_channel;
2483         p_subpic->i_order = p_owner->i_spu_order++;
2484         p_subpic->b_subtitle = true;
2485     }
2486
2487     vlc_object_release( p_vout );
2488
2489     return p_subpic;
2490 }
2491
2492 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2493 {
2494     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2495     vout_thread_t *p_vout = NULL;
2496
2497     p_vout = input_resource_HoldVout( p_owner->p_resource );
2498     if( !p_vout || p_owner->p_spu_vout != p_vout )
2499     {
2500         if( p_vout )
2501             vlc_object_release( p_vout );
2502         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2503         return;
2504     }
2505
2506     subpicture_Delete( p_subpic );
2507
2508     vlc_object_release( p_vout );
2509 }
2510