1 /*****************************************************************************
2 * decoder.c: Functions for the management of decoders
3 *****************************************************************************
4 * Copyright (C) 1999-2004 VLC authors and VideoLAN
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Laurent Aimar <fenrir@via.ecp.fr>
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.
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.
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 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
34 #include <vlc_common.h>
36 #include <vlc_block.h>
40 #include <vlc_codec.h>
43 #include <vlc_dialog.h>
44 #include <vlc_modules.h>
46 #include "audio_output/aout_internal.h"
47 #include "stream_output/stream_output.h"
48 #include "input_internal.h"
54 #include "../video_output/vout_control.h"
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 * );
61 static void *DecoderThread( void * );
62 static void DecoderProcess( decoder_t *, block_t * );
63 static void DecoderFlush( decoder_t * );
64 static void DecoderSignalWait( decoder_t *, bool );
66 static void DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
68 /* Buffers allocation callbacks for the decoders */
69 static int vout_update_format( decoder_t * );
70 static picture_t *vout_new_buffer( decoder_t * );
71 static void vout_del_buffer( decoder_t *, picture_t * );
72 static void vout_link_picture( decoder_t *, picture_t * );
73 static void vout_unlink_picture( decoder_t *, picture_t * );
74 static int aout_update_format( decoder_t * );
75 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
76 static void spu_del_buffer( decoder_t *, subpicture_t * );
78 struct decoder_owner_sys_t
80 int64_t i_preroll_end;
82 input_thread_t *p_input;
83 input_resource_t*p_resource;
84 input_clock_t *p_clock;
87 vout_thread_t *p_spu_vout;
91 sout_instance_t *p_sout;
92 sout_packetizer_input_t *p_sout_input;
96 /* Some decoders require already packetized data (ie. not truncated) */
97 decoder_t *p_packetizer;
100 /* Current format in use by the output */
104 bool b_fmt_description;
105 vlc_meta_t *p_description;
108 block_fifo_t *p_fifo;
110 /* Lock for communication with decoder thread */
112 vlc_cond_t wait_request;
113 vlc_cond_t wait_acknowledge;
115 /* -- These variables need locking on write(only) -- */
116 audio_output_t *p_aout;
118 vout_thread_t *p_vout;
120 /* -- Theses variables need locking on read *and* write -- */
144 decoder_t *pp_decoder[4];
151 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
152 * a bogus PTS and won't be displayed */
153 #define DECODER_BOGUS_VIDEO_DELAY ((mtime_t)(DEFAULT_PTS_DELAY * 30))
156 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
159 /*****************************************************************************
161 *****************************************************************************/
162 picture_t *decoder_NewPicture( decoder_t *p_decoder )
164 if( decoder_UpdateVideoFormat( p_decoder ) )
167 picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
169 msg_Warn( p_decoder, "can't get output picture" );
172 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
174 p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
176 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
178 p_decoder->pf_picture_link( p_decoder, p_picture );
180 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
182 p_decoder->pf_picture_unlink( p_decoder, p_picture );
185 block_t *decoder_NewAudioBuffer( decoder_t *dec, int samples )
187 if( decoder_UpdateAudioFormat( dec ) )
190 size_t length = samples * dec->fmt_out.audio.i_bytes_per_frame
191 / dec->fmt_out.audio.i_frame_length;
192 block_t *block = block_Alloc( length );
193 if( likely(block != NULL) )
195 block->i_nb_samples = samples;
196 block->i_pts = block->i_length = 0;
201 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
202 const subpicture_updater_t *p_dyn )
204 subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
206 msg_Warn( p_decoder, "can't get output subpicture" );
210 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
212 p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
215 /* decoder_GetInputAttachments:
217 int decoder_GetInputAttachments( decoder_t *p_dec,
218 input_attachment_t ***ppp_attachment,
221 if( !p_dec->pf_get_attachments )
224 return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
226 /* decoder_GetDisplayDate:
228 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
230 if( !p_dec->pf_get_display_date )
231 return VLC_TS_INVALID;
233 return p_dec->pf_get_display_date( p_dec, i_ts );
235 /* decoder_GetDisplayRate:
237 int decoder_GetDisplayRate( decoder_t *p_dec )
239 if( !p_dec->pf_get_display_rate )
240 return INPUT_RATE_DEFAULT;
242 return p_dec->pf_get_display_rate( p_dec );
245 /* TODO: pass p_sout through p_resource? -- Courmisch */
246 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
247 es_format_t *fmt, input_clock_t *p_clock,
248 input_resource_t *p_resource,
249 sout_instance_t *p_sout )
251 decoder_t *p_dec = NULL;
252 const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
255 /* Create the decoder configuration structure */
256 p_dec = CreateDecoder( p_parent, p_input, fmt,
257 p_sout != NULL, p_resource, p_sout );
260 msg_Err( p_parent, "could not create %s", psz_type );
261 dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
262 _("VLC could not open the %s module."),
263 vlc_gettext( psz_type ) );
267 if( !p_dec->p_module )
269 DecoderUnsupportedCodec( p_dec, fmt->i_codec );
271 DeleteDecoder( p_dec );
275 p_dec->p_owner->p_clock = p_clock;
276 assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
278 if( p_dec->fmt_out.i_cat == AUDIO_ES )
279 i_priority = VLC_THREAD_PRIORITY_AUDIO;
281 i_priority = VLC_THREAD_PRIORITY_VIDEO;
283 /* Spawn the decoder thread */
284 if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
286 msg_Err( p_dec, "cannot spawn decoder thread" );
287 module_unneed( p_dec, p_dec->p_module );
288 DeleteDecoder( p_dec );
297 * Spawns a new decoder thread from the input thread
299 * \param p_input the input thread
300 * \param p_es the es descriptor
301 * \return the spawned decoder object
303 decoder_t *input_DecoderNew( input_thread_t *p_input,
304 es_format_t *fmt, input_clock_t *p_clock,
305 sout_instance_t *p_sout )
307 return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
308 p_input->p->p_resource, p_sout );
312 * Spawn a decoder thread outside of the input thread.
314 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
315 input_resource_t *p_resource )
317 return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
322 * Kills a decoder thread and waits until it's finished
324 * \param p_input the input thread
325 * \param p_es the es descriptor
328 void input_DecoderDelete( decoder_t *p_dec )
330 decoder_owner_sys_t *p_owner = p_dec->p_owner;
332 vlc_cancel( p_owner->thread );
334 /* Make sure we aren't paused/waiting/decoding anymore */
335 vlc_mutex_lock( &p_owner->lock );
336 p_owner->b_paused = false;
337 p_owner->b_waiting = false;
338 p_owner->b_flushing = true;
339 p_owner->b_exit = true;
340 vlc_cond_signal( &p_owner->wait_request );
341 vlc_mutex_unlock( &p_owner->lock );
343 vlc_join( p_owner->thread, NULL );
345 module_unneed( p_dec, p_dec->p_module );
348 if( p_dec->p_owner->cc.b_supported )
351 for( i = 0; i < 4; i++ )
352 input_DecoderSetCcState( p_dec, false, i );
356 DeleteDecoder( p_dec );
360 * Put a block_t in the decoder's fifo.
361 * Thread-safe w.r.t. the decoder. May be a cancellation point.
363 * \param p_dec the decoder object
364 * \param p_block the data block
366 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
368 decoder_owner_sys_t *p_owner = p_dec->p_owner;
372 /* The fifo is not consumed when waiting and so will
374 * There is no need to lock as b_waiting is never modified
375 * inside decoder thread. */
376 if( !p_owner->b_waiting )
377 block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
380 else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
382 else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
385 /* FIXME: ideally we would check the time amount of data
386 * in the FIFO instead of its size. */
387 msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
388 "consumed quickly enough), resetting fifo!" );
389 block_FifoEmpty( p_owner->p_fifo );
392 block_FifoPut( p_owner->p_fifo, p_block );
395 bool input_DecoderIsEmpty( decoder_t * p_dec )
397 decoder_owner_sys_t *p_owner = p_dec->p_owner;
398 assert( !p_owner->b_waiting );
400 bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
404 vlc_mutex_lock( &p_owner->lock );
405 /* TODO subtitles support */
406 if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
407 b_empty = vout_IsEmpty( p_owner->p_vout );
408 else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
409 b_empty = aout_DecIsEmpty( p_owner->p_aout );
410 vlc_mutex_unlock( &p_owner->lock );
415 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
417 decoder_owner_sys_t *p_owner = p_dec->p_owner;
420 vlc_mutex_lock( &p_owner->lock );
421 for( i = 0; i < 4; i++ )
422 pb_present[i] = p_owner->cc.pb_present[i];
423 vlc_mutex_unlock( &p_owner->lock );
425 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
427 decoder_owner_sys_t *p_owner = p_dec->p_owner;
429 //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
431 if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
436 static const vlc_fourcc_t fcc[4] = {
437 VLC_FOURCC('c', 'c', '1', ' '),
438 VLC_FOURCC('c', 'c', '2', ' '),
439 VLC_FOURCC('c', 'c', '3', ' '),
440 VLC_FOURCC('c', 'c', '4', ' '),
445 es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
446 p_cc = input_DecoderNew( p_owner->p_input, &fmt,
447 p_dec->p_owner->p_clock, p_owner->p_sout );
450 msg_Err( p_dec, "could not create decoder" );
451 dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
452 _("VLC could not open the decoder module.") );
455 else if( !p_cc->p_module )
457 DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
458 input_DecoderDelete(p_cc);
461 p_cc->p_owner->p_clock = p_owner->p_clock;
463 vlc_mutex_lock( &p_owner->lock );
464 p_owner->cc.pp_decoder[i_channel] = p_cc;
465 vlc_mutex_unlock( &p_owner->lock );
471 vlc_mutex_lock( &p_owner->lock );
472 p_cc = p_owner->cc.pp_decoder[i_channel];
473 p_owner->cc.pp_decoder[i_channel] = NULL;
474 vlc_mutex_unlock( &p_owner->lock );
477 input_DecoderDelete(p_cc);
481 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
483 decoder_owner_sys_t *p_owner = p_dec->p_owner;
486 if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
489 vlc_mutex_lock( &p_owner->lock );
490 *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
491 vlc_mutex_unlock( &p_owner->lock );
495 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
497 decoder_owner_sys_t *p_owner = p_dec->p_owner;
499 vlc_mutex_lock( &p_owner->lock );
500 /* Normally, p_owner->b_paused != b_paused here. But if a track is added
501 * while the input is paused (e.g. add sub file), then b_paused is
502 * (incorrectly) false. */
503 if( likely(p_owner->b_paused != b_paused) ) {
504 p_owner->b_paused = b_paused;
505 p_owner->pause.i_date = i_date;
506 p_owner->pause.i_ignore = 0;
507 vlc_cond_signal( &p_owner->wait_request );
509 /* XXX only audio and video output have to be paused.
510 * - for sout it is useless
511 * - for subs, it is done by the vout
513 if( p_dec->fmt_out.i_cat == AUDIO_ES )
515 if( p_owner->p_aout )
516 aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
518 else if( p_dec->fmt_out.i_cat == VIDEO_ES )
520 if( p_owner->p_vout )
521 vout_ChangePause( p_owner->p_vout, b_paused, i_date );
524 vlc_mutex_unlock( &p_owner->lock );
527 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
529 decoder_owner_sys_t *p_owner = p_dec->p_owner;
531 vlc_mutex_lock( &p_owner->lock );
532 p_owner->i_ts_delay = i_delay;
533 vlc_mutex_unlock( &p_owner->lock );
536 void input_DecoderStartWait( decoder_t *p_dec )
538 decoder_owner_sys_t *p_owner = p_dec->p_owner;
540 vlc_mutex_lock( &p_owner->lock );
542 DecoderFlush( p_dec );
544 p_owner->b_first = true;
545 p_owner->b_has_data = false;
547 p_owner->b_waiting = true;
549 vlc_cond_signal( &p_owner->wait_request );
551 vlc_mutex_unlock( &p_owner->lock );
554 void input_DecoderStopWait( decoder_t *p_dec )
556 decoder_owner_sys_t *p_owner = p_dec->p_owner;
558 vlc_mutex_lock( &p_owner->lock );
560 p_owner->b_waiting = false;
562 vlc_cond_signal( &p_owner->wait_request );
564 vlc_mutex_unlock( &p_owner->lock );
567 void input_DecoderWait( decoder_t *p_dec )
569 decoder_owner_sys_t *p_owner = p_dec->p_owner;
571 vlc_mutex_lock( &p_owner->lock );
573 while( p_owner->b_waiting && !p_owner->b_has_data )
575 block_FifoWake( p_owner->p_fifo );
576 vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
579 vlc_mutex_unlock( &p_owner->lock );
582 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
584 decoder_owner_sys_t *p_owner = p_dec->p_owner;
588 vlc_mutex_lock( &p_owner->lock );
589 if( p_dec->fmt_out.i_cat == VIDEO_ES )
591 if( p_owner->b_paused && p_owner->p_vout )
593 vout_NextPicture( p_owner->p_vout, pi_duration );
594 p_owner->pause.i_ignore++;
595 vlc_cond_signal( &p_owner->wait_request );
600 /* TODO subtitle should not be flushed */
601 DecoderFlush( p_dec );
603 vlc_mutex_unlock( &p_owner->lock );
606 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
608 decoder_owner_sys_t *p_owner = p_dec->p_owner;
611 vlc_mutex_lock( &p_owner->lock );
612 b_changed = p_owner->b_fmt_description;
616 es_format_Copy( p_fmt, &p_owner->fmt );
621 if( p_owner->p_description )
623 *pp_meta = vlc_meta_New();
625 vlc_meta_Merge( *pp_meta, p_owner->p_description );
628 p_owner->b_fmt_description = false;
630 vlc_mutex_unlock( &p_owner->lock );
634 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
636 decoder_owner_sys_t *p_owner = p_dec->p_owner;
638 return block_FifoSize( p_owner->p_fifo );
641 void input_DecoderGetObjects( decoder_t *p_dec,
642 vout_thread_t **pp_vout, audio_output_t **pp_aout )
644 decoder_owner_sys_t *p_owner = p_dec->p_owner;
646 vlc_mutex_lock( &p_owner->lock );
648 *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
650 *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
651 vlc_mutex_unlock( &p_owner->lock );
654 /*****************************************************************************
656 *****************************************************************************/
657 static int DecoderGetInputAttachments( decoder_t *p_dec,
658 input_attachment_t ***ppp_attachment,
661 input_thread_t *p_input = p_dec->p_owner->p_input;
663 if( unlikely(p_input == NULL) )
665 return input_Control( p_input, INPUT_GET_ATTACHMENTS,
666 ppp_attachment, pi_attachment );
668 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
670 decoder_owner_sys_t *p_owner = p_dec->p_owner;
672 vlc_mutex_lock( &p_owner->lock );
673 if( p_owner->b_waiting || p_owner->b_paused )
674 i_ts = VLC_TS_INVALID;
675 vlc_mutex_unlock( &p_owner->lock );
677 if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
680 if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) ) {
681 msg_Err(p_dec, "Could not get display date for timestamp %"PRId64"", i_ts);
682 return VLC_TS_INVALID;
687 static int DecoderGetDisplayRate( decoder_t *p_dec )
689 decoder_owner_sys_t *p_owner = p_dec->p_owner;
691 if( !p_owner->p_clock )
692 return INPUT_RATE_DEFAULT;
693 return input_clock_GetRate( p_owner->p_clock );
697 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
699 if (codec != VLC_FOURCC('u','n','d','f')) {
700 const char *desc = vlc_fourcc_GetDescription(p_dec->fmt_in.i_cat, codec);
702 desc = N_("No description for this codec");
703 msg_Err( p_dec, "Codec `%4.4s' (%s) is not supported.", (char*)&codec, desc );
704 dialog_Fatal( p_dec, _("Codec not supported"),
705 _("VLC could not decode the format \"%4.4s\" (%s)"),
706 (char*)&codec, desc );
708 msg_Err( p_dec, "could not identify codec" );
709 dialog_Fatal( p_dec, _("Unidentified codec"),
710 _("VLC could not identify the audio or video codec" ) );
716 * Create a decoder object
718 * \param p_input the input thread
719 * \param p_es the es descriptor
720 * \param b_packetizer instead of a decoder
721 * \return the decoder object
723 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
724 input_thread_t *p_input,
725 es_format_t *fmt, bool b_packetizer,
726 input_resource_t *p_resource,
727 sout_instance_t *p_sout )
730 decoder_owner_sys_t *p_owner;
731 es_format_t null_es_format;
733 p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
737 p_dec->pf_decode_audio = NULL;
738 p_dec->pf_decode_video = NULL;
739 p_dec->pf_decode_sub = NULL;
740 p_dec->pf_get_cc = NULL;
741 p_dec->pf_packetize = NULL;
743 /* Initialize the decoder */
744 p_dec->p_module = NULL;
746 memset( &null_es_format, 0, sizeof(es_format_t) );
747 es_format_Copy( &p_dec->fmt_in, fmt );
748 es_format_Copy( &p_dec->fmt_out, &null_es_format );
750 p_dec->p_description = NULL;
752 /* Allocate our private structure for the decoder */
753 p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
754 if( unlikely(p_owner == NULL) )
756 vlc_object_release( p_dec );
759 p_owner->i_preroll_end = VLC_TS_INVALID;
760 p_owner->i_last_rate = INPUT_RATE_DEFAULT;
761 p_owner->p_input = p_input;
762 p_owner->p_resource = p_resource;
763 p_owner->p_aout = NULL;
764 p_owner->p_vout = NULL;
765 p_owner->p_spu_vout = NULL;
766 p_owner->i_spu_channel = 0;
767 p_owner->i_spu_order = 0;
768 p_owner->p_sout = p_sout;
769 p_owner->p_sout_input = NULL;
770 p_owner->p_packetizer = NULL;
771 p_owner->b_packetizer = b_packetizer;
772 es_format_Init( &p_owner->fmt, UNKNOWN_ES, 0 );
775 p_owner->p_fifo = block_FifoNew();
776 if( unlikely(p_owner->p_fifo == NULL) )
779 vlc_object_release( p_dec );
783 /* Set buffers allocation callbacks for the decoders */
784 p_dec->pf_aout_format_update = aout_update_format;
785 p_dec->pf_vout_format_update = vout_update_format;
786 p_dec->pf_vout_buffer_new = vout_new_buffer;
787 p_dec->pf_vout_buffer_del = vout_del_buffer;
788 p_dec->pf_picture_link = vout_link_picture;
789 p_dec->pf_picture_unlink = vout_unlink_picture;
790 p_dec->pf_spu_buffer_new = spu_new_buffer;
791 p_dec->pf_spu_buffer_del = spu_del_buffer;
793 p_dec->pf_get_attachments = DecoderGetInputAttachments;
794 p_dec->pf_get_display_date = DecoderGetDisplayDate;
795 p_dec->pf_get_display_rate = DecoderGetDisplayRate;
797 /* Find a suitable decoder/packetizer module */
799 p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
801 p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
803 /* Check if decoder requires already packetized data */
805 p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
807 p_owner->p_packetizer =
808 vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
809 if( p_owner->p_packetizer )
811 es_format_Copy( &p_owner->p_packetizer->fmt_in,
814 es_format_Copy( &p_owner->p_packetizer->fmt_out,
817 p_owner->p_packetizer->p_module =
818 module_need( p_owner->p_packetizer,
819 "packetizer", "$packetizer", false );
821 if( !p_owner->p_packetizer->p_module )
823 es_format_Clean( &p_owner->p_packetizer->fmt_in );
824 vlc_object_release( p_owner->p_packetizer );
825 p_owner->p_packetizer = NULL;
830 /* Copy ourself the input replay gain */
831 if( fmt->i_cat == AUDIO_ES )
833 for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
835 if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
837 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
838 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
840 if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
842 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
843 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
849 vlc_mutex_init( &p_owner->lock );
850 vlc_cond_init( &p_owner->wait_request );
851 vlc_cond_init( &p_owner->wait_acknowledge );
853 p_owner->b_fmt_description = false;
854 p_owner->p_description = NULL;
856 p_owner->b_exit = false;
858 p_owner->b_paused = false;
859 p_owner->pause.i_date = VLC_TS_INVALID;
860 p_owner->pause.i_ignore = 0;
862 p_owner->b_waiting = false;
863 p_owner->b_first = true;
864 p_owner->b_has_data = false;
866 p_owner->b_flushing = false;
869 p_owner->cc.b_supported = false;
872 if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
873 p_owner->cc.b_supported = true;
874 if( p_dec->pf_get_cc )
875 p_owner->cc.b_supported = true;
878 for( unsigned i = 0; i < 4; i++ )
880 p_owner->cc.pb_present[i] = false;
881 p_owner->cc.pp_decoder[i] = NULL;
883 p_owner->i_ts_delay = 0;
888 * The decoding main loop
890 * \param p_dec the decoder
892 static void *DecoderThread( void *p_data )
894 decoder_t *p_dec = (decoder_t *)p_data;
895 decoder_owner_sys_t *p_owner = p_dec->p_owner;
897 /* The decoder's main loop */
900 block_t *p_block = block_FifoGet( p_owner->p_fifo );
902 /* Make sure there is no cancellation point other than this one^^.
903 * If you need one, be sure to push cleanup of p_block. */
904 bool end_wait = !p_block || p_block->i_flags & BLOCK_FLAG_CORE_EOS;
905 DecoderSignalWait( p_dec, end_wait );
907 input_DecoderStopWait( p_dec );
911 int canc = vlc_savecancel();
913 if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
915 /* calling DecoderProcess() with NULL block will make
916 * decoders/packetizers flush their buffers */
917 block_Release( p_block );
921 DecoderProcess( p_dec, p_block );
923 vlc_restorecancel( canc );
929 static block_t *DecoderBlockFlushNew()
931 block_t *p_null = block_Alloc( 128 );
935 p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
936 BLOCK_FLAG_CORRUPTED |
937 BLOCK_FLAG_CORE_FLUSH;
938 memset( p_null->p_buffer, 0, p_null->i_buffer );
943 static void DecoderFlush( decoder_t *p_dec )
945 decoder_owner_sys_t *p_owner = p_dec->p_owner;
947 vlc_assert_locked( &p_owner->lock );
950 block_FifoEmpty( p_owner->p_fifo );
952 p_owner->b_waiting = false;
953 /* Monitor for flush end */
954 p_owner->b_flushing = true;
955 vlc_cond_signal( &p_owner->wait_request );
957 /* Send a special block */
958 block_t *p_null = DecoderBlockFlushNew();
961 input_DecoderDecode( p_dec, p_null, false );
964 while( p_owner->b_flushing )
965 vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
968 static void DecoderSignalWait( decoder_t *p_dec, bool b_has_data )
970 decoder_owner_sys_t *p_owner = p_dec->p_owner;
972 vlc_mutex_lock( &p_owner->lock );
974 if( p_owner->b_waiting )
977 p_owner->b_has_data = true;
978 vlc_cond_signal( &p_owner->wait_acknowledge );
981 vlc_mutex_unlock( &p_owner->lock );
984 static bool DecoderIsFlushing( decoder_t *p_dec )
986 decoder_owner_sys_t *p_owner = p_dec->p_owner;
989 vlc_mutex_lock( &p_owner->lock );
991 b_flushing = p_owner->b_flushing;
993 vlc_mutex_unlock( &p_owner->lock );
998 static bool DecoderWaitUnblock( decoder_t *p_dec )
1000 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1002 vlc_assert_locked( &p_owner->lock );
1006 if( p_owner->b_flushing )
1008 if( p_owner->b_paused )
1010 if( p_owner->b_waiting && !p_owner->b_has_data )
1012 if( p_owner->pause.i_ignore > 0 )
1014 p_owner->pause.i_ignore--;
1020 if( !p_owner->b_waiting || !p_owner->b_has_data )
1023 vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1026 return p_owner->b_flushing;
1029 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1031 if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1032 *pi_preroll = INT64_MAX;
1033 else if( p->i_dts > VLC_TS_INVALID )
1034 *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1035 else if( p->i_pts > VLC_TS_INVALID )
1036 *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1039 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1040 mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1042 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1043 input_clock_t *p_clock = p_owner->p_clock;
1045 vlc_assert_locked( &p_owner->lock );
1047 const mtime_t i_es_delay = p_owner->i_ts_delay;
1052 const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1055 if( *pi_ts0 > VLC_TS_INVALID )
1057 *pi_ts0 += i_es_delay;
1058 if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1059 *pi_ts1 += i_es_delay;
1060 if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) ) {
1061 if( pi_ts1 != NULL )
1062 msg_Err(p_dec, "Could not convert timestamps %"PRId64
1063 ", %"PRId64"", *pi_ts0, *pi_ts1);
1065 msg_Err(p_dec, "Could not convert timestamp %"PRId64, *pi_ts0);
1066 *pi_ts0 = VLC_TS_INVALID;
1071 i_rate = input_clock_GetRate( p_clock );
1074 /* Do not create ephemere data because of rounding errors */
1075 if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1079 *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1080 / INPUT_RATE_DEFAULT;
1086 static bool DecoderIsExitRequested( decoder_t *p_dec )
1088 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1090 vlc_mutex_lock( &p_owner->lock );
1091 bool b_exit = p_owner->b_exit;
1092 vlc_mutex_unlock( &p_owner->lock );
1098 * If *pb_reject, it does nothing, otherwise it waits for the given
1099 * deadline or a flush request (in which case it set *pi_reject to true.
1101 static void DecoderWaitDate( decoder_t *p_dec,
1102 bool *pb_reject, mtime_t i_deadline )
1104 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1106 vlc_assert_locked( &p_owner->lock );
1108 if( *pb_reject || i_deadline < 0 )
1113 if( p_owner->b_flushing || p_owner->b_exit )
1119 while( vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1120 i_deadline ) == 0 );
1123 static void DecoderPlayAudio( decoder_t *p_dec, block_t *p_audio,
1124 int *pi_played_sum, int *pi_lost_sum )
1126 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1127 audio_output_t *p_aout = p_owner->p_aout;
1130 if( p_audio && p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1132 msg_Warn( p_dec, "non-dated audio buffer received" );
1134 block_Release( p_audio );
1139 vlc_mutex_lock( &p_owner->lock );
1141 if( p_audio && p_owner->b_waiting )
1143 p_owner->b_has_data = true;
1144 vlc_cond_signal( &p_owner->wait_acknowledge );
1151 bool b_reject = DecoderWaitUnblock( p_dec );
1153 b_paused = p_owner->b_paused;
1159 int i_rate = INPUT_RATE_DEFAULT;
1161 DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1162 &i_rate, AOUT_MAX_ADVANCE_TIME );
1164 if( p_audio->i_pts <= VLC_TS_INVALID
1165 || i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE
1166 || i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1169 DecoderWaitDate( p_dec, &b_reject,
1170 p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1172 if( unlikely(p_owner->b_paused != b_paused) )
1173 continue; /* race with input thread? retry... */
1174 if( p_aout == NULL )
1179 assert( !p_owner->b_paused );
1180 if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1181 *pi_played_sum += 1;
1182 *pi_lost_sum += aout_DecGetResetLost( p_aout );
1186 msg_Dbg( p_dec, "discarded audio buffer" );
1188 block_Release( p_audio );
1193 vlc_mutex_unlock( &p_owner->lock );
1196 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1198 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1199 block_t *p_aout_buf;
1205 /* Play a NULL block to output buffered frames */
1206 DecoderPlayAudio( p_dec, NULL, &i_played, &i_lost );
1208 else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1210 if( DecoderIsExitRequested( p_dec ) )
1212 /* It prevent freezing VLC in case of broken decoder */
1213 block_Release( p_aout_buf );
1215 block_Release( p_block );
1220 if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1221 p_aout_buf->i_pts < p_owner->i_preroll_end )
1223 block_Release( p_aout_buf );
1227 if( p_owner->i_preroll_end > VLC_TS_INVALID )
1229 msg_Dbg( p_dec, "End of audio preroll" );
1230 if( p_owner->p_aout )
1231 aout_DecFlush( p_owner->p_aout );
1233 p_owner->i_preroll_end = VLC_TS_INVALID;
1236 DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1239 /* Update ugly stat */
1240 input_thread_t *p_input = p_owner->p_input;
1242 if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1244 vlc_mutex_lock( &p_input->p->counters.counters_lock);
1245 stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1246 stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1247 stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1248 vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1251 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1253 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1256 bool b_processed = false;
1260 assert( p_dec_cc->pf_get_cc != NULL );
1262 /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1263 if( !p_owner->cc.b_supported )
1266 p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1270 vlc_mutex_lock( &p_owner->lock );
1271 for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1273 p_owner->cc.pb_present[i] |= pb_present[i];
1274 if( p_owner->cc.pp_decoder[i] )
1278 for( i = 0; i < 4; i++ )
1280 if( !p_owner->cc.pp_decoder[i] )
1283 block_FifoPut( p_owner->cc.pp_decoder[i]->p_owner->p_fifo,
1284 (i_cc_decoder > 1) ? block_Duplicate(p_cc) : p_cc);
1289 vlc_mutex_unlock( &p_owner->lock );
1292 block_Release( p_cc );
1295 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1296 int *pi_played_sum, int *pi_lost_sum )
1298 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1299 vout_thread_t *p_vout = p_owner->p_vout;
1301 if( p_picture->date <= VLC_TS_INVALID )
1303 msg_Warn( p_dec, "non-dated video buffer received" );
1305 vout_ReleasePicture( p_vout, p_picture );
1310 vlc_mutex_lock( &p_owner->lock );
1312 if( p_owner->b_waiting && !p_owner->b_first )
1314 p_owner->b_has_data = true;
1315 vlc_cond_signal( &p_owner->wait_acknowledge );
1317 bool b_first_after_wait = p_owner->b_waiting && p_owner->b_has_data;
1319 bool b_reject = DecoderWaitUnblock( p_dec );
1321 if( p_owner->b_waiting )
1323 assert( p_owner->b_first );
1324 msg_Dbg( p_dec, "Received first picture" );
1325 p_owner->b_first = false;
1326 p_picture->b_force = true;
1329 const bool b_dated = p_picture->date > VLC_TS_INVALID;
1330 int i_rate = INPUT_RATE_DEFAULT;
1331 DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1332 &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1334 vlc_mutex_unlock( &p_owner->lock );
1337 if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1342 if( i_rate != p_owner->i_last_rate || b_first_after_wait )
1344 /* Be sure to not display old picture after our own */
1345 vout_Flush( p_vout, p_picture->date );
1346 p_owner->i_last_rate = i_rate;
1348 vout_PutPicture( p_vout, p_picture );
1353 msg_Warn( p_dec, "early picture skipped" );
1355 msg_Warn( p_dec, "non-dated video buffer received" );
1358 vout_ReleasePicture( p_vout, p_picture );
1362 vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1364 *pi_played_sum += i_tmp_display;
1365 *pi_lost_sum += i_tmp_lost;
1368 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1370 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1374 int i_displayed = 0;
1376 while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1378 vout_thread_t *p_vout = p_owner->p_vout;
1379 if( DecoderIsExitRequested( p_dec ) )
1381 /* It prevent freezing VLC in case of broken decoder */
1382 vout_ReleasePicture( p_vout, p_pic );
1384 block_Release( p_block );
1390 if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1392 vout_ReleasePicture( p_vout, p_pic );
1396 if( p_owner->i_preroll_end > VLC_TS_INVALID )
1398 msg_Dbg( p_dec, "End of video preroll" );
1400 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1402 p_owner->i_preroll_end = VLC_TS_INVALID;
1405 if( p_dec->pf_get_cc &&
1406 ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1407 DecoderGetCc( p_dec, p_dec );
1409 DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1412 /* Update ugly stat */
1413 input_thread_t *p_input = p_owner->p_input;
1415 if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1417 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1418 stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1419 stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1420 stats_Update( p_input->p->counters.p_displayed_pictures,
1422 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1426 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1428 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1429 vout_thread_t *p_vout = p_owner->p_spu_vout;
1432 if( p_subpic->i_start <= VLC_TS_INVALID )
1434 msg_Warn( p_dec, "non-dated spu buffer received" );
1435 subpicture_Delete( p_subpic );
1440 vlc_mutex_lock( &p_owner->lock );
1442 if( p_owner->b_waiting )
1444 p_owner->b_has_data = true;
1445 vlc_cond_signal( &p_owner->wait_acknowledge );
1448 bool b_reject = DecoderWaitUnblock( p_dec );
1450 DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1453 if( p_subpic->i_start <= VLC_TS_INVALID )
1456 DecoderWaitDate( p_dec, &b_reject,
1457 p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1458 vlc_mutex_unlock( &p_owner->lock );
1461 vout_PutSubpicture( p_vout, p_subpic );
1463 subpicture_Delete( p_subpic );
1467 static int DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1469 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1471 assert( p_owner->p_clock );
1472 assert( !p_sout_block->p_next );
1474 vlc_mutex_lock( &p_owner->lock );
1476 if( p_owner->b_waiting )
1478 p_owner->b_has_data = true;
1479 vlc_cond_signal( &p_owner->wait_acknowledge );
1482 bool b_reject = DecoderWaitUnblock( p_dec );
1484 DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1485 &p_sout_block->i_length, NULL, INT64_MAX );
1487 vlc_mutex_unlock( &p_owner->lock );
1491 /* FIXME --VLC_TS_INVALID inspect stream_output*/
1492 return sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1496 block_Release( p_sout_block );
1497 return VLC_EGENERIC;
1503 /* This function process a block for sout
1505 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1507 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1508 block_t *p_sout_block;
1510 while( ( p_sout_block =
1511 p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1513 if( p_owner->p_sout_input == NULL )
1515 assert( !p_owner->b_fmt_description ); // no need for owner lock
1516 es_format_Clean( &p_owner->fmt );
1517 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
1519 p_owner->fmt.i_group = p_dec->fmt_in.i_group;
1520 p_owner->fmt.i_id = p_dec->fmt_in.i_id;
1521 if( p_dec->fmt_in.psz_language )
1523 free( p_owner->fmt.psz_language );
1524 p_owner->fmt.psz_language =
1525 strdup( p_dec->fmt_in.psz_language );
1528 p_owner->p_sout_input =
1529 sout_InputNew( p_owner->p_sout, &p_owner->fmt );
1531 if( p_owner->p_sout_input == NULL )
1533 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1534 (char *)&p_owner->fmt.i_codec );
1535 p_dec->b_error = true;
1537 block_ChainRelease(p_sout_block);
1542 while( p_sout_block )
1544 block_t *p_next = p_sout_block->p_next;
1546 p_sout_block->p_next = NULL;
1548 if( DecoderPlaySout( p_dec, p_sout_block ) == VLC_EGENERIC )
1550 msg_Err( p_dec, "cannot continue streaming due to errors" );
1552 p_dec->b_error = true;
1555 block_ChainRelease( p_next );
1559 p_sout_block = p_next;
1565 /* This function process a video block
1567 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1569 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1571 if( p_owner->p_packetizer )
1573 block_t *p_packetized_block;
1574 decoder_t *p_packetizer = p_owner->p_packetizer;
1576 while( (p_packetized_block =
1577 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1579 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1581 es_format_Clean( &p_dec->fmt_in );
1582 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1585 /* If the packetizer provides aspect ratio information, pass it
1586 * to the decoder as a hint if the decoder itself can't provide
1587 * it. Copy it regardless of the current value of the decoder input
1588 * format aspect ratio, to properly propagate changes in aspect
1590 if( p_packetizer->fmt_out.video.i_sar_num > 0 &&
1591 p_packetizer->fmt_out.video.i_sar_den > 0)
1593 p_dec->fmt_in.video.i_sar_num =
1594 p_packetizer->fmt_out.video.i_sar_num;
1595 p_dec->fmt_in.video.i_sar_den=
1596 p_packetizer->fmt_out.video.i_sar_den;
1599 if( p_packetizer->pf_get_cc )
1600 DecoderGetCc( p_dec, p_packetizer );
1602 while( p_packetized_block )
1604 block_t *p_next = p_packetized_block->p_next;
1605 p_packetized_block->p_next = NULL;
1607 DecoderDecodeVideo( p_dec, p_packetized_block );
1609 p_packetized_block = p_next;
1612 /* The packetizer does not output a block that tell the decoder to flush
1616 block_t *p_null = DecoderBlockFlushNew();
1618 DecoderDecodeVideo( p_dec, p_null );
1623 DecoderDecodeVideo( p_dec, p_block );
1626 if( b_flush && p_owner->p_vout )
1627 vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1630 /* This function process a audio block
1632 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1634 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1636 if( p_owner->p_packetizer )
1638 block_t *p_packetized_block;
1639 decoder_t *p_packetizer = p_owner->p_packetizer;
1641 while( (p_packetized_block =
1642 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1644 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1646 es_format_Clean( &p_dec->fmt_in );
1647 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1650 while( p_packetized_block )
1652 block_t *p_next = p_packetized_block->p_next;
1653 p_packetized_block->p_next = NULL;
1655 DecoderDecodeAudio( p_dec, p_packetized_block );
1657 p_packetized_block = p_next;
1660 /* The packetizer does not output a block that tell the decoder to flush
1664 block_t *p_null = DecoderBlockFlushNew();
1666 DecoderDecodeAudio( p_dec, p_null );
1671 DecoderDecodeAudio( p_dec, p_block );
1674 if( b_flush && p_owner->p_aout )
1675 aout_DecFlush( p_owner->p_aout );
1678 /* This function process a subtitle block
1680 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1682 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1684 input_thread_t *p_input = p_owner->p_input;
1685 vout_thread_t *p_vout;
1686 subpicture_t *p_spu;
1688 while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1690 if( p_input != NULL )
1692 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1693 stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1694 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1697 p_vout = input_resource_HoldVout( p_owner->p_resource );
1698 if( p_vout && p_owner->p_spu_vout == p_vout )
1700 /* Preroll does not work very well with subtitle */
1701 if( p_spu->i_start > VLC_TS_INVALID &&
1702 p_spu->i_start < p_owner->i_preroll_end &&
1703 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1705 subpicture_Delete( p_spu );
1709 DecoderPlaySpu( p_dec, p_spu );
1714 subpicture_Delete( p_spu );
1717 vlc_object_release( p_vout );
1720 if( b_flush && p_owner->p_spu_vout )
1722 p_vout = input_resource_HoldVout( p_owner->p_resource );
1724 if( p_vout && p_owner->p_spu_vout == p_vout )
1725 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1728 vlc_object_release( p_vout );
1733 static void DecoderProcessOnFlush( decoder_t *p_dec )
1735 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1737 vlc_mutex_lock( &p_owner->lock );
1739 if( p_owner->b_flushing )
1741 p_owner->b_flushing = false;
1742 vlc_cond_signal( &p_owner->wait_acknowledge );
1744 vlc_mutex_unlock( &p_owner->lock );
1750 * \param p_dec the decoder object
1751 * \param p_block the block to decode
1752 * \return VLC_SUCCESS or an error code
1754 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1756 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1757 const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1759 if( p_dec->b_error )
1762 block_Release( p_block );
1766 if( p_block && p_block->i_buffer <= 0 )
1768 assert( !b_flush_request );
1769 block_Release( p_block );
1774 if( p_owner->b_packetizer )
1777 p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1779 DecoderProcessSout( p_dec, p_block );
1784 bool b_flush = false;
1788 const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1789 DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1791 b_flush = !b_flushing && b_flush_request;
1793 p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1796 if( p_dec->fmt_out.i_cat == AUDIO_ES )
1798 DecoderProcessAudio( p_dec, p_block, b_flush );
1800 else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1802 DecoderProcessVideo( p_dec, p_block, b_flush );
1804 else if( p_dec->fmt_out.i_cat == SPU_ES )
1806 DecoderProcessSpu( p_dec, p_block, b_flush );
1810 msg_Err( p_dec, "unknown ES format" );
1811 p_dec->b_error = true;
1817 if( b_flush_request )
1818 DecoderProcessOnFlush( p_dec );
1822 * Destroys a decoder object
1824 * \param p_dec the decoder object
1827 static void DeleteDecoder( decoder_t * p_dec )
1829 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1831 msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1832 (char*)&p_dec->fmt_in.i_codec,
1833 (unsigned)block_FifoCount( p_owner->p_fifo ) );
1835 /* Free all packets still in the decoder fifo. */
1836 block_FifoEmpty( p_owner->p_fifo );
1837 block_FifoRelease( p_owner->p_fifo );
1840 if( p_owner->p_aout )
1842 /* TODO: REVISIT gap-less audio */
1843 aout_DecFlush( p_owner->p_aout );
1844 aout_DecDelete( p_owner->p_aout );
1845 input_resource_PutAout( p_owner->p_resource, p_owner->p_aout );
1846 if( p_owner->p_input != NULL )
1847 input_SendEventAout( p_owner->p_input );
1849 if( p_owner->p_vout )
1851 /* Hack to make sure all the the pictures are freed by the decoder
1852 * and that the vout is not paused anymore */
1853 vout_Reset( p_owner->p_vout );
1856 input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
1858 if( p_owner->p_input != NULL )
1859 input_SendEventVout( p_owner->p_input );
1863 if( p_owner->p_sout_input )
1865 sout_InputDelete( p_owner->p_sout_input );
1868 es_format_Clean( &p_owner->fmt );
1870 if( p_dec->fmt_out.i_cat == SPU_ES )
1872 vout_thread_t *p_vout = input_resource_HoldVout( p_owner->p_resource );
1875 if( p_owner->p_spu_vout == p_vout )
1876 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1877 vlc_object_release( p_vout );
1881 es_format_Clean( &p_dec->fmt_in );
1882 es_format_Clean( &p_dec->fmt_out );
1883 if( p_dec->p_description )
1884 vlc_meta_Delete( p_dec->p_description );
1885 if( p_owner->p_description )
1886 vlc_meta_Delete( p_owner->p_description );
1888 if( p_owner->p_packetizer )
1890 module_unneed( p_owner->p_packetizer,
1891 p_owner->p_packetizer->p_module );
1892 es_format_Clean( &p_owner->p_packetizer->fmt_in );
1893 es_format_Clean( &p_owner->p_packetizer->fmt_out );
1894 if( p_owner->p_packetizer->p_description )
1895 vlc_meta_Delete( p_owner->p_packetizer->p_description );
1896 vlc_object_release( p_owner->p_packetizer );
1899 vlc_cond_destroy( &p_owner->wait_acknowledge );
1900 vlc_cond_destroy( &p_owner->wait_request );
1901 vlc_mutex_destroy( &p_owner->lock );
1903 vlc_object_release( p_dec );
1908 /*****************************************************************************
1909 * Buffers allocation callbacks for the decoders
1910 *****************************************************************************/
1911 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
1913 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1915 vlc_assert_locked( &p_owner->lock );
1917 p_owner->b_fmt_description = true;
1919 /* Move p_description */
1920 if( p_owner->p_description && p_dec->p_description )
1921 vlc_meta_Delete( p_owner->p_description );
1922 p_owner->p_description = p_dec->p_description;
1923 p_dec->p_description = NULL;
1925 static vout_thread_t *aout_request_vout( void *p_private,
1926 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
1928 decoder_t *p_dec = p_private;
1929 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1930 input_thread_t *p_input = p_owner->p_input;
1932 p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
1934 if( p_input != NULL )
1935 input_SendEventVout( p_input );
1940 static int aout_update_format( decoder_t *p_dec )
1942 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1945 && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->fmt.audio) )
1947 audio_output_t *p_aout = p_owner->p_aout;
1949 /* Parameters changed, restart the aout */
1950 vlc_mutex_lock( &p_owner->lock );
1952 aout_DecDelete( p_owner->p_aout );
1953 p_owner->p_aout = NULL;
1955 vlc_mutex_unlock( &p_owner->lock );
1956 input_resource_PutAout( p_owner->p_resource, p_aout );
1959 if( p_owner->p_aout == NULL )
1961 p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1963 audio_sample_format_t format = p_dec->fmt_out.audio;
1964 aout_FormatPrepare( &format );
1966 const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
1967 if( i_force_dolby &&
1968 (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
1969 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1971 if( i_force_dolby == 1 )
1973 format.i_original_channels = format.i_original_channels |
1974 AOUT_CHAN_DOLBYSTEREO;
1976 else /* i_force_dolby == 2 */
1978 format.i_original_channels = format.i_original_channels &
1979 ~AOUT_CHAN_DOLBYSTEREO;
1983 aout_request_vout_t request_vout = {
1984 .pf_request_vout = aout_request_vout,
1987 audio_output_t *p_aout;
1989 p_aout = input_resource_GetAout( p_owner->p_resource );
1992 if( aout_DecNew( p_aout, &format,
1993 &p_dec->fmt_out.audio_replay_gain,
1996 input_resource_PutAout( p_owner->p_resource, p_aout );
2001 vlc_mutex_lock( &p_owner->lock );
2003 p_owner->p_aout = p_aout;
2005 es_format_Clean( &p_owner->fmt );
2006 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
2007 aout_FormatPrepare( &p_owner->fmt.audio );
2009 DecoderUpdateFormatLocked( p_dec );
2011 if( unlikely(p_owner->b_paused) && p_aout != NULL )
2012 /* fake pause if needed */
2013 aout_DecChangePause( p_aout, true, mdate() );
2015 vlc_mutex_unlock( &p_owner->lock );
2017 if( p_owner->p_input != NULL )
2018 input_SendEventAout( p_owner->p_input );
2020 if( p_aout == NULL )
2022 msg_Err( p_dec, "failed to create audio output" );
2023 p_dec->b_error = true;
2027 p_dec->fmt_out.audio.i_bytes_per_frame =
2028 p_owner->fmt.audio.i_bytes_per_frame;
2029 p_dec->fmt_out.audio.i_frame_length =
2030 p_owner->fmt.audio.i_frame_length;
2035 static int vout_update_format( decoder_t *p_dec )
2037 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2039 if( p_owner->p_vout == NULL
2040 || p_dec->fmt_out.video.i_width != p_owner->fmt.video.i_width
2041 || p_dec->fmt_out.video.i_height != p_owner->fmt.video.i_height
2042 || p_dec->fmt_out.video.i_visible_width != p_owner->fmt.video.i_visible_width
2043 || p_dec->fmt_out.video.i_visible_height != p_owner->fmt.video.i_visible_height
2044 || p_dec->fmt_out.video.i_x_offset != p_owner->fmt.video.i_x_offset
2045 || p_dec->fmt_out.video.i_y_offset != p_owner->fmt.video.i_y_offset
2046 || p_dec->fmt_out.i_codec != p_owner->fmt.video.i_chroma
2047 || (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->fmt.video.i_sar_den !=
2048 (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->fmt.video.i_sar_num ||
2049 p_dec->fmt_out.video.orientation != p_owner->fmt.video.orientation )
2051 vout_thread_t *p_vout;
2053 if( !p_dec->fmt_out.video.i_width ||
2054 !p_dec->fmt_out.video.i_height )
2056 /* Can't create a new vout without display size */
2060 video_format_t fmt = p_dec->fmt_out.video;
2061 fmt.i_chroma = p_dec->fmt_out.i_codec;
2063 if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2065 const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2066 for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2068 while( fmt.i_width % dsc->p[i].w.den )
2070 while( fmt.i_height % dsc->p[i].h.den )
2075 if( !fmt.i_visible_width || !fmt.i_visible_height )
2077 if( p_dec->fmt_in.video.i_visible_width &&
2078 p_dec->fmt_in.video.i_visible_height )
2080 fmt.i_visible_width = p_dec->fmt_in.video.i_visible_width;
2081 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2082 fmt.i_x_offset = p_dec->fmt_in.video.i_x_offset;
2083 fmt.i_y_offset = p_dec->fmt_in.video.i_y_offset;
2087 fmt.i_visible_width = fmt.i_width;
2088 fmt.i_visible_height = fmt.i_height;
2094 if( fmt.i_visible_height == 1088 &&
2095 var_CreateGetBool( p_dec, "hdtv-fix" ) )
2097 fmt.i_visible_height = 1080;
2098 if( !(fmt.i_sar_num % 136))
2100 fmt.i_sar_num *= 135;
2101 fmt.i_sar_den *= 136;
2103 msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2106 if( !fmt.i_sar_num || !fmt.i_sar_den )
2112 vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2113 fmt.i_sar_num, fmt.i_sar_den, 50000 );
2115 vlc_mutex_lock( &p_owner->lock );
2117 p_vout = p_owner->p_vout;
2118 p_owner->p_vout = NULL;
2119 vlc_mutex_unlock( &p_owner->lock );
2122 switch( p_dec->fmt_in.i_codec )
2124 case VLC_CODEC_HEVC:
2125 case VLC_CODEC_H264:
2126 case VLC_CODEC_DIRAC: /* FIXME valid ? */
2131 case VLC_CODEC_VP6F:
2139 p_vout = input_resource_RequestVout( p_owner->p_resource,
2142 p_dec->i_extra_picture_buffers + 1,
2144 vlc_mutex_lock( &p_owner->lock );
2145 p_owner->p_vout = p_vout;
2147 es_format_Clean( &p_owner->fmt );
2148 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
2149 p_owner->fmt.video.i_chroma = p_dec->fmt_out.i_codec;
2151 DecoderUpdateFormatLocked( p_dec );
2153 vlc_mutex_unlock( &p_owner->lock );
2155 if( p_owner->p_input != NULL )
2156 input_SendEventVout( p_owner->p_input );
2157 if( p_vout == NULL )
2159 msg_Err( p_dec, "failed to create video output" );
2160 p_dec->b_error = true;
2167 static picture_t *vout_new_buffer( decoder_t *p_dec )
2169 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2173 if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2176 picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2180 if( DecoderIsFlushing( p_dec ) )
2184 DecoderSignalWait( p_dec, true );
2186 /* Check the decoder doesn't leak pictures */
2187 vout_FixLeaks( p_owner->p_vout );
2189 /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2190 msleep( VOUT_OUTMEM_SLEEP );
2194 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2196 vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2199 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2201 picture_Hold( p_pic );
2204 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2206 vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2209 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2210 const subpicture_updater_t *p_updater )
2212 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2213 vout_thread_t *p_vout = NULL;
2214 subpicture_t *p_subpic;
2215 int i_attempts = 30;
2217 while( i_attempts-- )
2219 if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2222 p_vout = input_resource_HoldVout( p_owner->p_resource );
2226 msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2231 msg_Warn( p_dec, "no vout found, dropping subpicture" );
2235 if( p_owner->p_spu_vout != p_vout )
2237 p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2238 p_owner->i_spu_order = 0;
2239 p_owner->p_spu_vout = p_vout;
2242 p_subpic = subpicture_New( p_updater );
2245 p_subpic->i_channel = p_owner->i_spu_channel;
2246 p_subpic->i_order = p_owner->i_spu_order++;
2247 p_subpic->b_subtitle = true;
2250 vlc_object_release( p_vout );
2255 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2257 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2258 vout_thread_t *p_vout = NULL;
2260 p_vout = input_resource_HoldVout( p_owner->p_resource );
2261 if( !p_vout || p_owner->p_spu_vout != p_vout )
2264 vlc_object_release( p_vout );
2265 msg_Warn( p_dec, "no vout found, leaking subpicture" );
2269 subpicture_Delete( p_subpic );
2271 vlc_object_release( p_vout );