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_unlink_picture( decoder_t *, picture_t * );
73 static int aout_update_format( decoder_t * );
74 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
75 static void spu_del_buffer( decoder_t *, subpicture_t * );
77 struct decoder_owner_sys_t
79 int64_t i_preroll_end;
81 input_thread_t *p_input;
82 input_resource_t*p_resource;
83 input_clock_t *p_clock;
86 vout_thread_t *p_spu_vout;
90 sout_instance_t *p_sout;
91 sout_packetizer_input_t *p_sout_input;
95 /* Some decoders require already packetized data (ie. not truncated) */
96 decoder_t *p_packetizer;
99 /* Current format in use by the output */
103 bool b_fmt_description;
104 vlc_meta_t *p_description;
107 block_fifo_t *p_fifo;
109 /* Lock for communication with decoder thread */
111 vlc_cond_t wait_request;
112 vlc_cond_t wait_acknowledge;
114 /* -- These variables need locking on write(only) -- */
115 audio_output_t *p_aout;
117 vout_thread_t *p_vout;
119 /* -- Theses variables need locking on read *and* write -- */
143 decoder_t *pp_decoder[4];
150 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
151 * a bogus PTS and won't be displayed */
152 #define DECODER_BOGUS_VIDEO_DELAY ((mtime_t)(DEFAULT_PTS_DELAY * 30))
155 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
158 /*****************************************************************************
160 *****************************************************************************/
161 picture_t *decoder_NewPicture( decoder_t *p_decoder )
163 if( decoder_UpdateVideoFormat( p_decoder ) )
166 picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
168 msg_Warn( p_decoder, "can't get output picture" );
171 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
173 p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
175 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
177 p_decoder->pf_picture_unlink( p_decoder, p_picture );
180 block_t *decoder_NewAudioBuffer( decoder_t *dec, int samples )
182 if( decoder_UpdateAudioFormat( dec ) )
185 size_t length = samples * dec->fmt_out.audio.i_bytes_per_frame
186 / dec->fmt_out.audio.i_frame_length;
187 block_t *block = block_Alloc( length );
188 if( likely(block != NULL) )
190 block->i_nb_samples = samples;
191 block->i_pts = block->i_length = 0;
196 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
197 const subpicture_updater_t *p_dyn )
199 subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
201 msg_Warn( p_decoder, "can't get output subpicture" );
205 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
207 p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
210 /* decoder_GetInputAttachments:
212 int decoder_GetInputAttachments( decoder_t *p_dec,
213 input_attachment_t ***ppp_attachment,
216 if( !p_dec->pf_get_attachments )
219 return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
221 /* decoder_GetDisplayDate:
223 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
225 if( !p_dec->pf_get_display_date )
226 return VLC_TS_INVALID;
228 return p_dec->pf_get_display_date( p_dec, i_ts );
230 /* decoder_GetDisplayRate:
232 int decoder_GetDisplayRate( decoder_t *p_dec )
234 if( !p_dec->pf_get_display_rate )
235 return INPUT_RATE_DEFAULT;
237 return p_dec->pf_get_display_rate( p_dec );
240 /* TODO: pass p_sout through p_resource? -- Courmisch */
241 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
242 es_format_t *fmt, input_clock_t *p_clock,
243 input_resource_t *p_resource,
244 sout_instance_t *p_sout )
246 decoder_t *p_dec = NULL;
247 const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
250 /* Create the decoder configuration structure */
251 p_dec = CreateDecoder( p_parent, p_input, fmt,
252 p_sout != NULL, p_resource, p_sout );
255 msg_Err( p_parent, "could not create %s", psz_type );
256 dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
257 _("VLC could not open the %s module."),
258 vlc_gettext( psz_type ) );
262 if( !p_dec->p_module )
264 DecoderUnsupportedCodec( p_dec, fmt->i_codec );
266 DeleteDecoder( p_dec );
270 p_dec->p_owner->p_clock = p_clock;
271 assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
273 if( p_dec->fmt_out.i_cat == AUDIO_ES )
274 i_priority = VLC_THREAD_PRIORITY_AUDIO;
276 i_priority = VLC_THREAD_PRIORITY_VIDEO;
278 /* Spawn the decoder thread */
279 if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
281 msg_Err( p_dec, "cannot spawn decoder thread" );
282 module_unneed( p_dec, p_dec->p_module );
283 DeleteDecoder( p_dec );
292 * Spawns a new decoder thread from the input thread
294 * \param p_input the input thread
295 * \param p_es the es descriptor
296 * \return the spawned decoder object
298 decoder_t *input_DecoderNew( input_thread_t *p_input,
299 es_format_t *fmt, input_clock_t *p_clock,
300 sout_instance_t *p_sout )
302 return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
303 p_input->p->p_resource, p_sout );
307 * Spawn a decoder thread outside of the input thread.
309 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
310 input_resource_t *p_resource )
312 return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
317 * Kills a decoder thread and waits until it's finished
319 * \param p_input the input thread
320 * \param p_es the es descriptor
323 void input_DecoderDelete( decoder_t *p_dec )
325 decoder_owner_sys_t *p_owner = p_dec->p_owner;
327 vlc_cancel( p_owner->thread );
329 /* Make sure we aren't paused/waiting/decoding anymore */
330 vlc_mutex_lock( &p_owner->lock );
331 p_owner->b_paused = false;
332 p_owner->b_waiting = false;
333 p_owner->b_flushing = true;
334 p_owner->b_exit = true;
335 vlc_cond_signal( &p_owner->wait_request );
336 vlc_mutex_unlock( &p_owner->lock );
338 vlc_join( p_owner->thread, NULL );
340 module_unneed( p_dec, p_dec->p_module );
343 if( p_dec->p_owner->cc.b_supported )
346 for( i = 0; i < 4; i++ )
347 input_DecoderSetCcState( p_dec, false, i );
351 DeleteDecoder( p_dec );
355 * Put a block_t in the decoder's fifo.
356 * Thread-safe w.r.t. the decoder. May be a cancellation point.
358 * \param p_dec the decoder object
359 * \param p_block the data block
361 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
363 decoder_owner_sys_t *p_owner = p_dec->p_owner;
367 /* The fifo is not consumed when waiting and so will
369 * There is no need to lock as b_waiting is never modified
370 * inside decoder thread. */
371 if( !p_owner->b_waiting )
372 block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
375 else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
377 else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
380 /* FIXME: ideally we would check the time amount of data
381 * in the FIFO instead of its size. */
382 msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
383 "consumed quickly enough), resetting fifo!" );
384 block_FifoEmpty( p_owner->p_fifo );
387 block_FifoPut( p_owner->p_fifo, p_block );
390 bool input_DecoderIsEmpty( decoder_t * p_dec )
392 decoder_owner_sys_t *p_owner = p_dec->p_owner;
393 assert( !p_owner->b_waiting );
395 bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
399 vlc_mutex_lock( &p_owner->lock );
400 /* TODO subtitles support */
401 if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
402 b_empty = vout_IsEmpty( p_owner->p_vout );
403 else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
404 b_empty = aout_DecIsEmpty( p_owner->p_aout );
405 vlc_mutex_unlock( &p_owner->lock );
410 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
412 decoder_owner_sys_t *p_owner = p_dec->p_owner;
415 vlc_mutex_lock( &p_owner->lock );
416 for( i = 0; i < 4; i++ )
417 pb_present[i] = p_owner->cc.pb_present[i];
418 vlc_mutex_unlock( &p_owner->lock );
420 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
422 decoder_owner_sys_t *p_owner = p_dec->p_owner;
424 //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
426 if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
431 static const vlc_fourcc_t fcc[4] = {
432 VLC_FOURCC('c', 'c', '1', ' '),
433 VLC_FOURCC('c', 'c', '2', ' '),
434 VLC_FOURCC('c', 'c', '3', ' '),
435 VLC_FOURCC('c', 'c', '4', ' '),
440 es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
441 p_cc = input_DecoderNew( p_owner->p_input, &fmt,
442 p_dec->p_owner->p_clock, p_owner->p_sout );
445 msg_Err( p_dec, "could not create decoder" );
446 dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
447 _("VLC could not open the decoder module.") );
450 else if( !p_cc->p_module )
452 DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
453 input_DecoderDelete(p_cc);
456 p_cc->p_owner->p_clock = p_owner->p_clock;
458 vlc_mutex_lock( &p_owner->lock );
459 p_owner->cc.pp_decoder[i_channel] = p_cc;
460 vlc_mutex_unlock( &p_owner->lock );
466 vlc_mutex_lock( &p_owner->lock );
467 p_cc = p_owner->cc.pp_decoder[i_channel];
468 p_owner->cc.pp_decoder[i_channel] = NULL;
469 vlc_mutex_unlock( &p_owner->lock );
472 input_DecoderDelete(p_cc);
476 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
478 decoder_owner_sys_t *p_owner = p_dec->p_owner;
481 if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
484 vlc_mutex_lock( &p_owner->lock );
485 *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
486 vlc_mutex_unlock( &p_owner->lock );
490 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
492 decoder_owner_sys_t *p_owner = p_dec->p_owner;
494 vlc_mutex_lock( &p_owner->lock );
495 /* Normally, p_owner->b_paused != b_paused here. But if a track is added
496 * while the input is paused (e.g. add sub file), then b_paused is
497 * (incorrectly) false. */
498 if( likely(p_owner->b_paused != b_paused) ) {
499 p_owner->b_paused = b_paused;
500 p_owner->pause.i_date = i_date;
501 p_owner->pause.i_ignore = 0;
502 vlc_cond_signal( &p_owner->wait_request );
504 /* XXX only audio and video output have to be paused.
505 * - for sout it is useless
506 * - for subs, it is done by the vout
508 if( p_dec->fmt_out.i_cat == AUDIO_ES )
510 if( p_owner->p_aout )
511 aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
513 else if( p_dec->fmt_out.i_cat == VIDEO_ES )
515 if( p_owner->p_vout )
516 vout_ChangePause( p_owner->p_vout, b_paused, i_date );
519 vlc_mutex_unlock( &p_owner->lock );
522 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
524 decoder_owner_sys_t *p_owner = p_dec->p_owner;
526 vlc_mutex_lock( &p_owner->lock );
527 p_owner->i_ts_delay = i_delay;
528 vlc_mutex_unlock( &p_owner->lock );
531 void input_DecoderStartWait( decoder_t *p_dec )
533 decoder_owner_sys_t *p_owner = p_dec->p_owner;
535 vlc_mutex_lock( &p_owner->lock );
537 DecoderFlush( p_dec );
539 p_owner->b_first = true;
540 p_owner->b_has_data = false;
542 p_owner->b_waiting = true;
544 vlc_cond_signal( &p_owner->wait_request );
546 vlc_mutex_unlock( &p_owner->lock );
549 void input_DecoderStopWait( decoder_t *p_dec )
551 decoder_owner_sys_t *p_owner = p_dec->p_owner;
553 vlc_mutex_lock( &p_owner->lock );
555 p_owner->b_waiting = false;
557 vlc_cond_signal( &p_owner->wait_request );
559 vlc_mutex_unlock( &p_owner->lock );
562 void input_DecoderWait( decoder_t *p_dec )
564 decoder_owner_sys_t *p_owner = p_dec->p_owner;
566 vlc_mutex_lock( &p_owner->lock );
568 while( p_owner->b_waiting && !p_owner->b_has_data )
570 block_FifoWake( p_owner->p_fifo );
571 vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
574 vlc_mutex_unlock( &p_owner->lock );
577 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
579 decoder_owner_sys_t *p_owner = p_dec->p_owner;
583 vlc_mutex_lock( &p_owner->lock );
584 if( p_dec->fmt_out.i_cat == VIDEO_ES )
586 if( p_owner->b_paused && p_owner->p_vout )
588 vout_NextPicture( p_owner->p_vout, pi_duration );
589 p_owner->pause.i_ignore++;
590 vlc_cond_signal( &p_owner->wait_request );
595 /* TODO subtitle should not be flushed */
596 DecoderFlush( p_dec );
598 vlc_mutex_unlock( &p_owner->lock );
601 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
603 decoder_owner_sys_t *p_owner = p_dec->p_owner;
606 vlc_mutex_lock( &p_owner->lock );
607 b_changed = p_owner->b_fmt_description;
611 es_format_Copy( p_fmt, &p_owner->fmt );
616 if( p_owner->p_description )
618 *pp_meta = vlc_meta_New();
620 vlc_meta_Merge( *pp_meta, p_owner->p_description );
623 p_owner->b_fmt_description = false;
625 vlc_mutex_unlock( &p_owner->lock );
629 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
631 decoder_owner_sys_t *p_owner = p_dec->p_owner;
633 return block_FifoSize( p_owner->p_fifo );
636 void input_DecoderGetObjects( decoder_t *p_dec,
637 vout_thread_t **pp_vout, audio_output_t **pp_aout )
639 decoder_owner_sys_t *p_owner = p_dec->p_owner;
641 vlc_mutex_lock( &p_owner->lock );
643 *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
645 *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
646 vlc_mutex_unlock( &p_owner->lock );
649 /*****************************************************************************
651 *****************************************************************************/
652 static int DecoderGetInputAttachments( decoder_t *p_dec,
653 input_attachment_t ***ppp_attachment,
656 input_thread_t *p_input = p_dec->p_owner->p_input;
658 if( unlikely(p_input == NULL) )
660 return input_Control( p_input, INPUT_GET_ATTACHMENTS,
661 ppp_attachment, pi_attachment );
663 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
665 decoder_owner_sys_t *p_owner = p_dec->p_owner;
667 vlc_mutex_lock( &p_owner->lock );
668 if( p_owner->b_waiting || p_owner->b_paused )
669 i_ts = VLC_TS_INVALID;
670 vlc_mutex_unlock( &p_owner->lock );
672 if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
675 if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) ) {
676 msg_Err(p_dec, "Could not get display date for timestamp %"PRId64"", i_ts);
677 return VLC_TS_INVALID;
682 static int DecoderGetDisplayRate( decoder_t *p_dec )
684 decoder_owner_sys_t *p_owner = p_dec->p_owner;
686 if( !p_owner->p_clock )
687 return INPUT_RATE_DEFAULT;
688 return input_clock_GetRate( p_owner->p_clock );
692 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
694 if (codec != VLC_FOURCC('u','n','d','f')) {
695 const char *desc = vlc_fourcc_GetDescription(p_dec->fmt_in.i_cat, codec);
697 desc = N_("No description for this codec");
698 msg_Err( p_dec, "Codec `%4.4s' (%s) is not supported.", (char*)&codec, desc );
699 dialog_Fatal( p_dec, _("Codec not supported"),
700 _("VLC could not decode the format \"%4.4s\" (%s)"),
701 (char*)&codec, desc );
703 msg_Err( p_dec, "could not identify codec" );
704 dialog_Fatal( p_dec, _("Unidentified codec"),
705 _("VLC could not identify the audio or video codec" ) );
711 * Create a decoder object
713 * \param p_input the input thread
714 * \param p_es the es descriptor
715 * \param b_packetizer instead of a decoder
716 * \return the decoder object
718 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
719 input_thread_t *p_input,
720 es_format_t *fmt, bool b_packetizer,
721 input_resource_t *p_resource,
722 sout_instance_t *p_sout )
725 decoder_owner_sys_t *p_owner;
726 es_format_t null_es_format;
728 p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
732 p_dec->pf_decode_audio = NULL;
733 p_dec->pf_decode_video = NULL;
734 p_dec->pf_decode_sub = NULL;
735 p_dec->pf_get_cc = NULL;
736 p_dec->pf_packetize = NULL;
738 /* Initialize the decoder */
739 p_dec->p_module = NULL;
741 memset( &null_es_format, 0, sizeof(es_format_t) );
742 es_format_Copy( &p_dec->fmt_in, fmt );
743 es_format_Copy( &p_dec->fmt_out, &null_es_format );
745 p_dec->p_description = NULL;
747 /* Allocate our private structure for the decoder */
748 p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
749 if( unlikely(p_owner == NULL) )
751 vlc_object_release( p_dec );
754 p_owner->i_preroll_end = VLC_TS_INVALID;
755 p_owner->i_last_rate = INPUT_RATE_DEFAULT;
756 p_owner->p_input = p_input;
757 p_owner->p_resource = p_resource;
758 p_owner->p_aout = NULL;
759 p_owner->p_vout = NULL;
760 p_owner->p_spu_vout = NULL;
761 p_owner->i_spu_channel = 0;
762 p_owner->i_spu_order = 0;
763 p_owner->p_sout = p_sout;
764 p_owner->p_sout_input = NULL;
765 p_owner->p_packetizer = NULL;
766 p_owner->b_packetizer = b_packetizer;
767 es_format_Init( &p_owner->fmt, UNKNOWN_ES, 0 );
770 p_owner->p_fifo = block_FifoNew();
771 if( unlikely(p_owner->p_fifo == NULL) )
774 vlc_object_release( p_dec );
778 /* Set buffers allocation callbacks for the decoders */
779 p_dec->pf_aout_format_update = aout_update_format;
780 p_dec->pf_vout_format_update = vout_update_format;
781 p_dec->pf_vout_buffer_new = vout_new_buffer;
782 p_dec->pf_vout_buffer_del = vout_del_buffer;
783 p_dec->pf_picture_unlink = vout_unlink_picture;
784 p_dec->pf_spu_buffer_new = spu_new_buffer;
785 p_dec->pf_spu_buffer_del = spu_del_buffer;
787 p_dec->pf_get_attachments = DecoderGetInputAttachments;
788 p_dec->pf_get_display_date = DecoderGetDisplayDate;
789 p_dec->pf_get_display_rate = DecoderGetDisplayRate;
791 /* Find a suitable decoder/packetizer module */
793 p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
795 p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
797 /* Check if decoder requires already packetized data */
799 p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
801 p_owner->p_packetizer =
802 vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
803 if( p_owner->p_packetizer )
805 es_format_Copy( &p_owner->p_packetizer->fmt_in,
808 es_format_Copy( &p_owner->p_packetizer->fmt_out,
811 p_owner->p_packetizer->p_module =
812 module_need( p_owner->p_packetizer,
813 "packetizer", "$packetizer", false );
815 if( !p_owner->p_packetizer->p_module )
817 es_format_Clean( &p_owner->p_packetizer->fmt_in );
818 vlc_object_release( p_owner->p_packetizer );
819 p_owner->p_packetizer = NULL;
824 /* Copy ourself the input replay gain */
825 if( fmt->i_cat == AUDIO_ES )
827 for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
829 if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
831 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
832 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
834 if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
836 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
837 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
843 vlc_mutex_init( &p_owner->lock );
844 vlc_cond_init( &p_owner->wait_request );
845 vlc_cond_init( &p_owner->wait_acknowledge );
847 p_owner->b_fmt_description = false;
848 p_owner->p_description = NULL;
850 p_owner->b_exit = false;
852 p_owner->b_paused = false;
853 p_owner->pause.i_date = VLC_TS_INVALID;
854 p_owner->pause.i_ignore = 0;
856 p_owner->b_waiting = false;
857 p_owner->b_first = true;
858 p_owner->b_has_data = false;
860 p_owner->b_flushing = false;
863 p_owner->cc.b_supported = false;
866 if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
867 p_owner->cc.b_supported = true;
868 if( p_dec->pf_get_cc )
869 p_owner->cc.b_supported = true;
872 for( unsigned i = 0; i < 4; i++ )
874 p_owner->cc.pb_present[i] = false;
875 p_owner->cc.pp_decoder[i] = NULL;
877 p_owner->i_ts_delay = 0;
882 * The decoding main loop
884 * \param p_dec the decoder
886 static void *DecoderThread( void *p_data )
888 decoder_t *p_dec = (decoder_t *)p_data;
889 decoder_owner_sys_t *p_owner = p_dec->p_owner;
891 /* The decoder's main loop */
894 block_t *p_block = block_FifoGet( p_owner->p_fifo );
896 /* Make sure there is no cancellation point other than this one^^.
897 * If you need one, be sure to push cleanup of p_block. */
898 bool end_wait = !p_block || p_block->i_flags & BLOCK_FLAG_CORE_EOS;
899 DecoderSignalWait( p_dec, end_wait );
901 input_DecoderStopWait( p_dec );
905 int canc = vlc_savecancel();
907 if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
909 /* calling DecoderProcess() with NULL block will make
910 * decoders/packetizers flush their buffers */
911 block_Release( p_block );
915 DecoderProcess( p_dec, p_block );
917 vlc_restorecancel( canc );
923 static block_t *DecoderBlockFlushNew()
925 block_t *p_null = block_Alloc( 128 );
929 p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
930 BLOCK_FLAG_CORRUPTED |
931 BLOCK_FLAG_CORE_FLUSH;
932 memset( p_null->p_buffer, 0, p_null->i_buffer );
937 static void DecoderFlush( decoder_t *p_dec )
939 decoder_owner_sys_t *p_owner = p_dec->p_owner;
941 vlc_assert_locked( &p_owner->lock );
944 block_FifoEmpty( p_owner->p_fifo );
946 p_owner->b_waiting = false;
947 /* Monitor for flush end */
948 p_owner->b_flushing = true;
949 vlc_cond_signal( &p_owner->wait_request );
951 /* Send a special block */
952 block_t *p_null = DecoderBlockFlushNew();
955 input_DecoderDecode( p_dec, p_null, false );
958 while( p_owner->b_flushing )
959 vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
962 static void DecoderSignalWait( decoder_t *p_dec, bool b_has_data )
964 decoder_owner_sys_t *p_owner = p_dec->p_owner;
966 vlc_mutex_lock( &p_owner->lock );
968 if( p_owner->b_waiting )
971 p_owner->b_has_data = true;
972 vlc_cond_signal( &p_owner->wait_acknowledge );
975 vlc_mutex_unlock( &p_owner->lock );
978 static bool DecoderIsFlushing( decoder_t *p_dec )
980 decoder_owner_sys_t *p_owner = p_dec->p_owner;
983 vlc_mutex_lock( &p_owner->lock );
985 b_flushing = p_owner->b_flushing;
987 vlc_mutex_unlock( &p_owner->lock );
992 static bool DecoderWaitUnblock( decoder_t *p_dec )
994 decoder_owner_sys_t *p_owner = p_dec->p_owner;
996 vlc_assert_locked( &p_owner->lock );
1000 if( p_owner->b_flushing )
1002 if( p_owner->b_paused )
1004 if( p_owner->b_waiting && !p_owner->b_has_data )
1006 if( p_owner->pause.i_ignore > 0 )
1008 p_owner->pause.i_ignore--;
1014 if( !p_owner->b_waiting || !p_owner->b_has_data )
1017 vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1020 return p_owner->b_flushing;
1023 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1025 if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1026 *pi_preroll = INT64_MAX;
1027 else if( p->i_dts > VLC_TS_INVALID )
1028 *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1029 else if( p->i_pts > VLC_TS_INVALID )
1030 *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1033 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1034 mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1036 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1037 input_clock_t *p_clock = p_owner->p_clock;
1039 vlc_assert_locked( &p_owner->lock );
1041 const mtime_t i_es_delay = p_owner->i_ts_delay;
1046 const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1049 if( *pi_ts0 > VLC_TS_INVALID )
1051 *pi_ts0 += i_es_delay;
1052 if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1053 *pi_ts1 += i_es_delay;
1054 if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) ) {
1055 if( pi_ts1 != NULL )
1056 msg_Err(p_dec, "Could not convert timestamps %"PRId64
1057 ", %"PRId64"", *pi_ts0, *pi_ts1);
1059 msg_Err(p_dec, "Could not convert timestamp %"PRId64, *pi_ts0);
1060 *pi_ts0 = VLC_TS_INVALID;
1065 i_rate = input_clock_GetRate( p_clock );
1068 /* Do not create ephemere data because of rounding errors */
1069 if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1073 *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1074 / INPUT_RATE_DEFAULT;
1080 static bool DecoderIsExitRequested( decoder_t *p_dec )
1082 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1084 vlc_mutex_lock( &p_owner->lock );
1085 bool b_exit = p_owner->b_exit;
1086 vlc_mutex_unlock( &p_owner->lock );
1092 * If *pb_reject, it does nothing, otherwise it waits for the given
1093 * deadline or a flush request (in which case it set *pi_reject to true.
1095 static void DecoderWaitDate( decoder_t *p_dec,
1096 bool *pb_reject, mtime_t i_deadline )
1098 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1100 vlc_assert_locked( &p_owner->lock );
1102 if( *pb_reject || i_deadline < 0 )
1107 if( p_owner->b_flushing || p_owner->b_exit )
1113 while( vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1114 i_deadline ) == 0 );
1117 static void DecoderPlayAudio( decoder_t *p_dec, block_t *p_audio,
1118 int *pi_played_sum, int *pi_lost_sum )
1120 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1121 audio_output_t *p_aout = p_owner->p_aout;
1124 if( p_audio && p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1126 msg_Warn( p_dec, "non-dated audio buffer received" );
1128 block_Release( p_audio );
1133 vlc_mutex_lock( &p_owner->lock );
1135 if( p_audio && p_owner->b_waiting )
1137 p_owner->b_has_data = true;
1138 vlc_cond_signal( &p_owner->wait_acknowledge );
1145 bool b_reject = DecoderWaitUnblock( p_dec );
1147 b_paused = p_owner->b_paused;
1153 int i_rate = INPUT_RATE_DEFAULT;
1155 DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1156 &i_rate, AOUT_MAX_ADVANCE_TIME );
1158 if( p_audio->i_pts <= VLC_TS_INVALID
1159 || i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE
1160 || i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1163 DecoderWaitDate( p_dec, &b_reject,
1164 p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1166 if( unlikely(p_owner->b_paused != b_paused) )
1167 continue; /* race with input thread? retry... */
1168 if( p_aout == NULL )
1173 assert( !p_owner->b_paused );
1174 if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1175 *pi_played_sum += 1;
1176 *pi_lost_sum += aout_DecGetResetLost( p_aout );
1180 msg_Dbg( p_dec, "discarded audio buffer" );
1182 block_Release( p_audio );
1187 vlc_mutex_unlock( &p_owner->lock );
1190 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1192 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1193 block_t *p_aout_buf;
1199 /* Play a NULL block to output buffered frames */
1200 DecoderPlayAudio( p_dec, NULL, &i_played, &i_lost );
1202 else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1204 if( DecoderIsExitRequested( p_dec ) )
1206 /* It prevent freezing VLC in case of broken decoder */
1207 block_Release( p_aout_buf );
1209 block_Release( p_block );
1214 if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1215 p_aout_buf->i_pts < p_owner->i_preroll_end )
1217 block_Release( p_aout_buf );
1221 if( p_owner->i_preroll_end > VLC_TS_INVALID )
1223 msg_Dbg( p_dec, "End of audio preroll" );
1224 if( p_owner->p_aout )
1225 aout_DecFlush( p_owner->p_aout );
1227 p_owner->i_preroll_end = VLC_TS_INVALID;
1230 DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1233 /* Update ugly stat */
1234 input_thread_t *p_input = p_owner->p_input;
1236 if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1238 vlc_mutex_lock( &p_input->p->counters.counters_lock);
1239 stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1240 stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1241 stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1242 vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1245 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1247 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1250 bool b_processed = false;
1254 assert( p_dec_cc->pf_get_cc != NULL );
1256 /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1257 if( !p_owner->cc.b_supported )
1260 p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1264 vlc_mutex_lock( &p_owner->lock );
1265 for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1267 p_owner->cc.pb_present[i] |= pb_present[i];
1268 if( p_owner->cc.pp_decoder[i] )
1272 for( i = 0; i < 4; i++ )
1274 if( !p_owner->cc.pp_decoder[i] )
1277 block_FifoPut( p_owner->cc.pp_decoder[i]->p_owner->p_fifo,
1278 (i_cc_decoder > 1) ? block_Duplicate(p_cc) : p_cc);
1283 vlc_mutex_unlock( &p_owner->lock );
1286 block_Release( p_cc );
1289 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1290 int *pi_played_sum, int *pi_lost_sum )
1292 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1293 vout_thread_t *p_vout = p_owner->p_vout;
1295 if( p_picture->date <= VLC_TS_INVALID )
1297 msg_Warn( p_dec, "non-dated video buffer received" );
1299 vout_ReleasePicture( p_vout, p_picture );
1304 vlc_mutex_lock( &p_owner->lock );
1306 if( p_owner->b_waiting && !p_owner->b_first )
1308 p_owner->b_has_data = true;
1309 vlc_cond_signal( &p_owner->wait_acknowledge );
1311 bool b_first_after_wait = p_owner->b_waiting && p_owner->b_has_data;
1313 bool b_reject = DecoderWaitUnblock( p_dec );
1315 if( p_owner->b_waiting )
1317 assert( p_owner->b_first );
1318 msg_Dbg( p_dec, "Received first picture" );
1319 p_owner->b_first = false;
1320 p_picture->b_force = true;
1323 const bool b_dated = p_picture->date > VLC_TS_INVALID;
1324 int i_rate = INPUT_RATE_DEFAULT;
1325 DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1326 &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1328 vlc_mutex_unlock( &p_owner->lock );
1331 if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1336 if( i_rate != p_owner->i_last_rate || b_first_after_wait )
1338 /* Be sure to not display old picture after our own */
1339 vout_Flush( p_vout, p_picture->date );
1340 p_owner->i_last_rate = i_rate;
1342 vout_PutPicture( p_vout, p_picture );
1347 msg_Warn( p_dec, "early picture skipped" );
1349 msg_Warn( p_dec, "non-dated video buffer received" );
1352 vout_ReleasePicture( p_vout, p_picture );
1356 vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1358 *pi_played_sum += i_tmp_display;
1359 *pi_lost_sum += i_tmp_lost;
1362 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1364 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1368 int i_displayed = 0;
1370 while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1372 vout_thread_t *p_vout = p_owner->p_vout;
1373 if( DecoderIsExitRequested( p_dec ) )
1375 /* It prevent freezing VLC in case of broken decoder */
1376 vout_ReleasePicture( p_vout, p_pic );
1378 block_Release( p_block );
1384 if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1386 vout_ReleasePicture( p_vout, p_pic );
1390 if( p_owner->i_preroll_end > VLC_TS_INVALID )
1392 msg_Dbg( p_dec, "End of video preroll" );
1394 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1396 p_owner->i_preroll_end = VLC_TS_INVALID;
1399 if( p_dec->pf_get_cc &&
1400 ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1401 DecoderGetCc( p_dec, p_dec );
1403 DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1406 /* Update ugly stat */
1407 input_thread_t *p_input = p_owner->p_input;
1409 if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1411 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1412 stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1413 stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1414 stats_Update( p_input->p->counters.p_displayed_pictures,
1416 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1420 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1422 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1423 vout_thread_t *p_vout = p_owner->p_spu_vout;
1426 if( p_subpic->i_start <= VLC_TS_INVALID )
1428 msg_Warn( p_dec, "non-dated spu buffer received" );
1429 subpicture_Delete( p_subpic );
1434 vlc_mutex_lock( &p_owner->lock );
1436 if( p_owner->b_waiting )
1438 p_owner->b_has_data = true;
1439 vlc_cond_signal( &p_owner->wait_acknowledge );
1442 bool b_reject = DecoderWaitUnblock( p_dec );
1444 DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1447 if( p_subpic->i_start <= VLC_TS_INVALID )
1450 DecoderWaitDate( p_dec, &b_reject,
1451 p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1452 vlc_mutex_unlock( &p_owner->lock );
1455 vout_PutSubpicture( p_vout, p_subpic );
1457 subpicture_Delete( p_subpic );
1461 static int DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1463 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1465 assert( p_owner->p_clock );
1466 assert( !p_sout_block->p_next );
1468 vlc_mutex_lock( &p_owner->lock );
1470 if( p_owner->b_waiting )
1472 p_owner->b_has_data = true;
1473 vlc_cond_signal( &p_owner->wait_acknowledge );
1476 bool b_reject = DecoderWaitUnblock( p_dec );
1478 DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1479 &p_sout_block->i_length, NULL, INT64_MAX );
1481 vlc_mutex_unlock( &p_owner->lock );
1485 /* FIXME --VLC_TS_INVALID inspect stream_output*/
1486 return sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1490 block_Release( p_sout_block );
1491 return VLC_EGENERIC;
1497 /* This function process a block for sout
1499 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1501 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1502 block_t *p_sout_block;
1504 while( ( p_sout_block =
1505 p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1507 if( p_owner->p_sout_input == NULL )
1509 assert( !p_owner->b_fmt_description ); // no need for owner lock
1510 es_format_Clean( &p_owner->fmt );
1511 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
1513 p_owner->fmt.i_group = p_dec->fmt_in.i_group;
1514 p_owner->fmt.i_id = p_dec->fmt_in.i_id;
1515 if( p_dec->fmt_in.psz_language )
1517 free( p_owner->fmt.psz_language );
1518 p_owner->fmt.psz_language =
1519 strdup( p_dec->fmt_in.psz_language );
1522 p_owner->p_sout_input =
1523 sout_InputNew( p_owner->p_sout, &p_owner->fmt );
1525 if( p_owner->p_sout_input == NULL )
1527 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1528 (char *)&p_owner->fmt.i_codec );
1529 p_dec->b_error = true;
1531 block_ChainRelease(p_sout_block);
1536 while( p_sout_block )
1538 block_t *p_next = p_sout_block->p_next;
1540 p_sout_block->p_next = NULL;
1542 if( DecoderPlaySout( p_dec, p_sout_block ) == VLC_EGENERIC )
1544 msg_Err( p_dec, "cannot continue streaming due to errors" );
1546 p_dec->b_error = true;
1549 block_ChainRelease( p_next );
1553 p_sout_block = p_next;
1559 /* This function process a video block
1561 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1563 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1565 if( p_owner->p_packetizer )
1567 block_t *p_packetized_block;
1568 decoder_t *p_packetizer = p_owner->p_packetizer;
1570 while( (p_packetized_block =
1571 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1573 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1575 es_format_Clean( &p_dec->fmt_in );
1576 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1579 /* If the packetizer provides aspect ratio information, pass it
1580 * to the decoder as a hint if the decoder itself can't provide
1581 * it. Copy it regardless of the current value of the decoder input
1582 * format aspect ratio, to properly propagate changes in aspect
1584 if( p_packetizer->fmt_out.video.i_sar_num > 0 &&
1585 p_packetizer->fmt_out.video.i_sar_den > 0)
1587 p_dec->fmt_in.video.i_sar_num =
1588 p_packetizer->fmt_out.video.i_sar_num;
1589 p_dec->fmt_in.video.i_sar_den=
1590 p_packetizer->fmt_out.video.i_sar_den;
1593 if( p_packetizer->pf_get_cc )
1594 DecoderGetCc( p_dec, p_packetizer );
1596 while( p_packetized_block )
1598 block_t *p_next = p_packetized_block->p_next;
1599 p_packetized_block->p_next = NULL;
1601 DecoderDecodeVideo( p_dec, p_packetized_block );
1603 p_packetized_block = p_next;
1606 /* The packetizer does not output a block that tell the decoder to flush
1610 block_t *p_null = DecoderBlockFlushNew();
1612 DecoderDecodeVideo( p_dec, p_null );
1617 DecoderDecodeVideo( p_dec, p_block );
1620 if( b_flush && p_owner->p_vout )
1621 vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1624 /* This function process a audio block
1626 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1628 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1630 if( p_owner->p_packetizer )
1632 block_t *p_packetized_block;
1633 decoder_t *p_packetizer = p_owner->p_packetizer;
1635 while( (p_packetized_block =
1636 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1638 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1640 es_format_Clean( &p_dec->fmt_in );
1641 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1644 while( p_packetized_block )
1646 block_t *p_next = p_packetized_block->p_next;
1647 p_packetized_block->p_next = NULL;
1649 DecoderDecodeAudio( p_dec, p_packetized_block );
1651 p_packetized_block = p_next;
1654 /* The packetizer does not output a block that tell the decoder to flush
1658 block_t *p_null = DecoderBlockFlushNew();
1660 DecoderDecodeAudio( p_dec, p_null );
1665 DecoderDecodeAudio( p_dec, p_block );
1668 if( b_flush && p_owner->p_aout )
1669 aout_DecFlush( p_owner->p_aout );
1672 /* This function process a subtitle block
1674 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1676 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1678 input_thread_t *p_input = p_owner->p_input;
1679 vout_thread_t *p_vout;
1680 subpicture_t *p_spu;
1682 while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1684 if( p_input != NULL )
1686 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1687 stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1688 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1691 p_vout = input_resource_HoldVout( p_owner->p_resource );
1692 if( p_vout && p_owner->p_spu_vout == p_vout )
1694 /* Preroll does not work very well with subtitle */
1695 if( p_spu->i_start > VLC_TS_INVALID &&
1696 p_spu->i_start < p_owner->i_preroll_end &&
1697 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1699 subpicture_Delete( p_spu );
1703 DecoderPlaySpu( p_dec, p_spu );
1708 subpicture_Delete( p_spu );
1711 vlc_object_release( p_vout );
1714 if( b_flush && p_owner->p_spu_vout )
1716 p_vout = input_resource_HoldVout( p_owner->p_resource );
1718 if( p_vout && p_owner->p_spu_vout == p_vout )
1719 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1722 vlc_object_release( p_vout );
1727 static void DecoderProcessOnFlush( decoder_t *p_dec )
1729 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1731 vlc_mutex_lock( &p_owner->lock );
1733 if( p_owner->b_flushing )
1735 p_owner->b_flushing = false;
1736 vlc_cond_signal( &p_owner->wait_acknowledge );
1738 vlc_mutex_unlock( &p_owner->lock );
1744 * \param p_dec the decoder object
1745 * \param p_block the block to decode
1746 * \return VLC_SUCCESS or an error code
1748 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1750 decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1751 const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1753 if( p_dec->b_error )
1756 block_Release( p_block );
1760 if( p_block && p_block->i_buffer <= 0 )
1762 assert( !b_flush_request );
1763 block_Release( p_block );
1768 if( p_owner->b_packetizer )
1771 p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1773 DecoderProcessSout( p_dec, p_block );
1778 bool b_flush = false;
1782 const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1783 DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1785 b_flush = !b_flushing && b_flush_request;
1787 p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1790 if( p_dec->fmt_out.i_cat == AUDIO_ES )
1792 DecoderProcessAudio( p_dec, p_block, b_flush );
1794 else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1796 DecoderProcessVideo( p_dec, p_block, b_flush );
1798 else if( p_dec->fmt_out.i_cat == SPU_ES )
1800 DecoderProcessSpu( p_dec, p_block, b_flush );
1804 msg_Err( p_dec, "unknown ES format" );
1805 p_dec->b_error = true;
1811 if( b_flush_request )
1812 DecoderProcessOnFlush( p_dec );
1816 * Destroys a decoder object
1818 * \param p_dec the decoder object
1821 static void DeleteDecoder( decoder_t * p_dec )
1823 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1825 msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1826 (char*)&p_dec->fmt_in.i_codec,
1827 (unsigned)block_FifoCount( p_owner->p_fifo ) );
1829 /* Free all packets still in the decoder fifo. */
1830 block_FifoEmpty( p_owner->p_fifo );
1831 block_FifoRelease( p_owner->p_fifo );
1834 if( p_owner->p_aout )
1836 /* TODO: REVISIT gap-less audio */
1837 aout_DecFlush( p_owner->p_aout );
1838 aout_DecDelete( p_owner->p_aout );
1839 input_resource_PutAout( p_owner->p_resource, p_owner->p_aout );
1840 if( p_owner->p_input != NULL )
1841 input_SendEventAout( p_owner->p_input );
1843 if( p_owner->p_vout )
1845 /* Hack to make sure all the the pictures are freed by the decoder
1846 * and that the vout is not paused anymore */
1847 vout_Reset( p_owner->p_vout );
1850 input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
1852 if( p_owner->p_input != NULL )
1853 input_SendEventVout( p_owner->p_input );
1857 if( p_owner->p_sout_input )
1859 sout_InputDelete( p_owner->p_sout_input );
1862 es_format_Clean( &p_owner->fmt );
1864 if( p_dec->fmt_out.i_cat == SPU_ES )
1866 vout_thread_t *p_vout = input_resource_HoldVout( p_owner->p_resource );
1869 if( p_owner->p_spu_vout == p_vout )
1870 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1871 vlc_object_release( p_vout );
1875 es_format_Clean( &p_dec->fmt_in );
1876 es_format_Clean( &p_dec->fmt_out );
1877 if( p_dec->p_description )
1878 vlc_meta_Delete( p_dec->p_description );
1879 if( p_owner->p_description )
1880 vlc_meta_Delete( p_owner->p_description );
1882 if( p_owner->p_packetizer )
1884 module_unneed( p_owner->p_packetizer,
1885 p_owner->p_packetizer->p_module );
1886 es_format_Clean( &p_owner->p_packetizer->fmt_in );
1887 es_format_Clean( &p_owner->p_packetizer->fmt_out );
1888 if( p_owner->p_packetizer->p_description )
1889 vlc_meta_Delete( p_owner->p_packetizer->p_description );
1890 vlc_object_release( p_owner->p_packetizer );
1893 vlc_cond_destroy( &p_owner->wait_acknowledge );
1894 vlc_cond_destroy( &p_owner->wait_request );
1895 vlc_mutex_destroy( &p_owner->lock );
1897 vlc_object_release( p_dec );
1902 /*****************************************************************************
1903 * Buffers allocation callbacks for the decoders
1904 *****************************************************************************/
1905 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
1907 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1909 vlc_assert_locked( &p_owner->lock );
1911 p_owner->b_fmt_description = true;
1913 /* Move p_description */
1914 if( p_owner->p_description && p_dec->p_description )
1915 vlc_meta_Delete( p_owner->p_description );
1916 p_owner->p_description = p_dec->p_description;
1917 p_dec->p_description = NULL;
1919 static vout_thread_t *aout_request_vout( void *p_private,
1920 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
1922 decoder_t *p_dec = p_private;
1923 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1924 input_thread_t *p_input = p_owner->p_input;
1926 p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
1928 if( p_input != NULL )
1929 input_SendEventVout( p_input );
1934 static int aout_update_format( decoder_t *p_dec )
1936 decoder_owner_sys_t *p_owner = p_dec->p_owner;
1939 && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->fmt.audio) )
1941 audio_output_t *p_aout = p_owner->p_aout;
1943 /* Parameters changed, restart the aout */
1944 vlc_mutex_lock( &p_owner->lock );
1946 aout_DecDelete( p_owner->p_aout );
1947 p_owner->p_aout = NULL;
1949 vlc_mutex_unlock( &p_owner->lock );
1950 input_resource_PutAout( p_owner->p_resource, p_aout );
1953 if( p_owner->p_aout == NULL )
1955 p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1957 audio_sample_format_t format = p_dec->fmt_out.audio;
1958 aout_FormatPrepare( &format );
1960 const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
1961 if( i_force_dolby &&
1962 (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
1963 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1965 if( i_force_dolby == 1 )
1967 format.i_original_channels = format.i_original_channels |
1968 AOUT_CHAN_DOLBYSTEREO;
1970 else /* i_force_dolby == 2 */
1972 format.i_original_channels = format.i_original_channels &
1973 ~AOUT_CHAN_DOLBYSTEREO;
1977 aout_request_vout_t request_vout = {
1978 .pf_request_vout = aout_request_vout,
1981 audio_output_t *p_aout;
1983 p_aout = input_resource_GetAout( p_owner->p_resource );
1986 if( aout_DecNew( p_aout, &format,
1987 &p_dec->fmt_out.audio_replay_gain,
1990 input_resource_PutAout( p_owner->p_resource, p_aout );
1995 vlc_mutex_lock( &p_owner->lock );
1997 p_owner->p_aout = p_aout;
1999 es_format_Clean( &p_owner->fmt );
2000 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
2001 aout_FormatPrepare( &p_owner->fmt.audio );
2003 DecoderUpdateFormatLocked( p_dec );
2005 if( unlikely(p_owner->b_paused) && p_aout != NULL )
2006 /* fake pause if needed */
2007 aout_DecChangePause( p_aout, true, mdate() );
2009 vlc_mutex_unlock( &p_owner->lock );
2011 if( p_owner->p_input != NULL )
2012 input_SendEventAout( p_owner->p_input );
2014 if( p_aout == NULL )
2016 msg_Err( p_dec, "failed to create audio output" );
2017 p_dec->b_error = true;
2021 p_dec->fmt_out.audio.i_bytes_per_frame =
2022 p_owner->fmt.audio.i_bytes_per_frame;
2023 p_dec->fmt_out.audio.i_frame_length =
2024 p_owner->fmt.audio.i_frame_length;
2029 static int vout_update_format( decoder_t *p_dec )
2031 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2033 if( p_owner->p_vout == NULL
2034 || p_dec->fmt_out.video.i_width != p_owner->fmt.video.i_width
2035 || p_dec->fmt_out.video.i_height != p_owner->fmt.video.i_height
2036 || p_dec->fmt_out.video.i_visible_width != p_owner->fmt.video.i_visible_width
2037 || p_dec->fmt_out.video.i_visible_height != p_owner->fmt.video.i_visible_height
2038 || p_dec->fmt_out.video.i_x_offset != p_owner->fmt.video.i_x_offset
2039 || p_dec->fmt_out.video.i_y_offset != p_owner->fmt.video.i_y_offset
2040 || p_dec->fmt_out.i_codec != p_owner->fmt.video.i_chroma
2041 || (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->fmt.video.i_sar_den !=
2042 (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->fmt.video.i_sar_num ||
2043 p_dec->fmt_out.video.orientation != p_owner->fmt.video.orientation )
2045 vout_thread_t *p_vout;
2047 if( !p_dec->fmt_out.video.i_width ||
2048 !p_dec->fmt_out.video.i_height )
2050 /* Can't create a new vout without display size */
2054 video_format_t fmt = p_dec->fmt_out.video;
2055 fmt.i_chroma = p_dec->fmt_out.i_codec;
2057 if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2059 const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2060 for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2062 while( fmt.i_width % dsc->p[i].w.den )
2064 while( fmt.i_height % dsc->p[i].h.den )
2069 if( !fmt.i_visible_width || !fmt.i_visible_height )
2071 if( p_dec->fmt_in.video.i_visible_width &&
2072 p_dec->fmt_in.video.i_visible_height )
2074 fmt.i_visible_width = p_dec->fmt_in.video.i_visible_width;
2075 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2076 fmt.i_x_offset = p_dec->fmt_in.video.i_x_offset;
2077 fmt.i_y_offset = p_dec->fmt_in.video.i_y_offset;
2081 fmt.i_visible_width = fmt.i_width;
2082 fmt.i_visible_height = fmt.i_height;
2088 if( fmt.i_visible_height == 1088 &&
2089 var_CreateGetBool( p_dec, "hdtv-fix" ) )
2091 fmt.i_visible_height = 1080;
2092 if( !(fmt.i_sar_num % 136))
2094 fmt.i_sar_num *= 135;
2095 fmt.i_sar_den *= 136;
2097 msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2100 if( !fmt.i_sar_num || !fmt.i_sar_den )
2106 vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2107 fmt.i_sar_num, fmt.i_sar_den, 50000 );
2109 vlc_mutex_lock( &p_owner->lock );
2111 p_vout = p_owner->p_vout;
2112 p_owner->p_vout = NULL;
2113 vlc_mutex_unlock( &p_owner->lock );
2116 switch( p_dec->fmt_in.i_codec )
2118 case VLC_CODEC_HEVC:
2119 case VLC_CODEC_H264:
2120 case VLC_CODEC_DIRAC: /* FIXME valid ? */
2125 case VLC_CODEC_VP6F:
2133 p_vout = input_resource_RequestVout( p_owner->p_resource,
2136 p_dec->i_extra_picture_buffers + 1,
2138 vlc_mutex_lock( &p_owner->lock );
2139 p_owner->p_vout = p_vout;
2141 es_format_Clean( &p_owner->fmt );
2142 es_format_Copy( &p_owner->fmt, &p_dec->fmt_out );
2143 p_owner->fmt.video.i_chroma = p_dec->fmt_out.i_codec;
2145 DecoderUpdateFormatLocked( p_dec );
2147 vlc_mutex_unlock( &p_owner->lock );
2149 if( p_owner->p_input != NULL )
2150 input_SendEventVout( p_owner->p_input );
2151 if( p_vout == NULL )
2153 msg_Err( p_dec, "failed to create video output" );
2154 p_dec->b_error = true;
2161 static picture_t *vout_new_buffer( decoder_t *p_dec )
2163 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2167 if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2170 picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2174 if( DecoderIsFlushing( p_dec ) )
2178 DecoderSignalWait( p_dec, true );
2180 /* Check the decoder doesn't leak pictures */
2181 vout_FixLeaks( p_owner->p_vout );
2183 /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2184 msleep( VOUT_OUTMEM_SLEEP );
2188 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2190 vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2193 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2195 vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2198 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2199 const subpicture_updater_t *p_updater )
2201 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2202 vout_thread_t *p_vout = NULL;
2203 subpicture_t *p_subpic;
2204 int i_attempts = 30;
2206 while( i_attempts-- )
2208 if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2211 p_vout = input_resource_HoldVout( p_owner->p_resource );
2215 msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2220 msg_Warn( p_dec, "no vout found, dropping subpicture" );
2224 if( p_owner->p_spu_vout != p_vout )
2226 p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2227 p_owner->i_spu_order = 0;
2228 p_owner->p_spu_vout = p_vout;
2231 p_subpic = subpicture_New( p_updater );
2234 p_subpic->i_channel = p_owner->i_spu_channel;
2235 p_subpic->i_order = p_owner->i_spu_order++;
2236 p_subpic->b_subtitle = true;
2239 vlc_object_release( p_vout );
2244 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2246 decoder_owner_sys_t *p_owner = p_dec->p_owner;
2247 vout_thread_t *p_vout = NULL;
2249 p_vout = input_resource_HoldVout( p_owner->p_resource );
2250 if( !p_vout || p_owner->p_spu_vout != p_vout )
2253 vlc_object_release( p_vout );
2254 msg_Warn( p_dec, "no vout found, leaking subpicture" );
2258 subpicture_Delete( p_subpic );
2260 vlc_object_release( p_vout );