1 /*****************************************************************************
2 * decoder.c: Functions for the management of decoders
3 *****************************************************************************
4 * Copyright (C) 1999-2004 the VideoLAN team
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
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
34 #include <vlc_common.h>
36 #include <vlc_block.h>
40 #include <vlc_codec.h>
43 #include <vlc_interface.h>
44 #include "audio_output/aout_internal.h"
45 #include "stream_output/stream_output.h"
46 #include "input_internal.h"
48 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
49 static void DeleteDecoder( decoder_t * );
51 static void* DecoderThread( vlc_object_t * );
52 static int DecoderDecode( decoder_t * p_dec, block_t *p_block );
54 /* Buffers allocation callbacks for the decoders */
55 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
56 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
58 static picture_t *vout_new_buffer( decoder_t * );
59 static void vout_del_buffer( decoder_t *, picture_t * );
60 static void vout_link_picture( decoder_t *, picture_t * );
61 static void vout_unlink_picture( decoder_t *, picture_t * );
63 static subpicture_t *spu_new_buffer( decoder_t * );
64 static void spu_del_buffer( decoder_t *, subpicture_t * );
66 static es_format_t null_es_format;
68 struct decoder_owner_sys_t
72 int64_t i_preroll_end;
74 input_thread_t *p_input;
76 aout_instance_t *p_aout;
77 aout_input_t *p_aout_input;
79 vout_thread_t *p_vout;
81 vout_thread_t *p_spu_vout;
84 sout_instance_t *p_sout;
85 sout_packetizer_input_t *p_sout_input;
87 /* Some decoders require already packetized data (ie. not truncated) */
88 decoder_t *p_packetizer;
90 /* Current format in use by the output */
101 bool pb_cc_present[4];
106 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
108 msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
109 "VLC probably does not support this sound or video format.",
111 intf_UserFatal( p_dec, false, _("No suitable decoder module"),
112 _("VLC does not support the audio or video format \"%4.4s\". "
113 "Unfortunately there is no way for you to fix this."), (char*)&codec );
116 /* decoder_GetInputAttachment:
118 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
119 const char *psz_name )
121 input_attachment_t *p_attachment;
122 if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
126 /* decoder_GetInputAttachments:
128 int decoder_GetInputAttachments( decoder_t *p_dec,
129 input_attachment_t ***ppp_attachment,
132 return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
133 ppp_attachment, pi_attachment );
135 /* decoder_GetDisplayDate:
137 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
144 * Spawns a new decoder thread
146 * \param p_input the input thread
147 * \param p_es the es descriptor
148 * \return the spawned decoder object
150 decoder_t *input_DecoderNew( input_thread_t *p_input,
151 es_format_t *fmt, sout_instance_t *p_sout )
153 decoder_t *p_dec = NULL;
157 (void)b_force_decoder;
159 /* If we are in sout mode, search for packetizer module */
162 /* Create the decoder configuration structure */
163 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
166 msg_Err( p_input, "could not create packetizer" );
167 intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
168 _("VLC could not open the packetizer module.") );
175 /* Create the decoder configuration structure */
176 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
179 msg_Err( p_input, "could not create decoder" );
180 intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
181 _("VLC could not open the decoder module.") );
186 if( !p_dec->p_module )
188 DecoderUnsupportedCodec( p_dec, fmt->i_codec );
190 DeleteDecoder( p_dec );
191 vlc_object_release( p_dec );
195 if( p_sout && p_sout == p_input->p->p_sout && p_input->p->input.b_can_pace_control )
197 msg_Dbg( p_input, "stream out mode -> no decoder thread" );
198 p_dec->p_owner->b_own_thread = false;
202 var_Get( p_input, "minimize-threads", &val );
203 p_dec->p_owner->b_own_thread = !val.b_bool;
206 if( p_dec->p_owner->b_own_thread )
209 if( fmt->i_cat == AUDIO_ES )
210 i_priority = VLC_THREAD_PRIORITY_AUDIO;
212 i_priority = VLC_THREAD_PRIORITY_VIDEO;
214 /* Spawn the decoder thread */
215 if( vlc_thread_create( p_dec, "decoder", DecoderThread,
216 i_priority, false ) )
218 msg_Err( p_dec, "cannot spawn decoder thread" );
219 module_Unneed( p_dec, p_dec->p_module );
220 DeleteDecoder( p_dec );
221 vlc_object_release( p_dec );
230 * Kills a decoder thread and waits until it's finished
232 * \param p_input the input thread
233 * \param p_es the es descriptor
236 void input_DecoderDelete( decoder_t *p_dec )
238 vlc_object_kill( p_dec );
240 if( p_dec->p_owner->b_own_thread )
242 /* Make sure the thread leaves the function by
243 * sending it an empty block. */
244 block_t *p_block = block_New( p_dec, 0 );
245 input_DecoderDecode( p_dec, p_block );
247 vlc_thread_join( p_dec );
249 /* Don't module_Unneed() here because of the dll loader that wants
250 * close() in the same thread than open()/decode() */
255 input_DecoderDecode( p_dec, NULL );
257 module_Unneed( p_dec, p_dec->p_module );
261 if( p_dec->p_owner->b_cc_supported )
264 for( i = 0; i < 4; i++ )
265 input_DecoderSetCcState( p_dec, false, i );
268 /* Delete decoder configuration */
269 DeleteDecoder( p_dec );
271 /* Delete the decoder */
272 vlc_object_release( p_dec );
276 * Put a block_t in the decoder's fifo.
278 * \param p_dec the decoder object
279 * \param p_block the data block
281 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
283 if( p_dec->p_owner->b_own_thread )
285 if( p_dec->p_owner->p_input->p->b_out_pace_control )
288 while( !p_dec->b_die && !p_dec->b_error &&
289 block_FifoCount( p_dec->p_owner->p_fifo ) > 10 )
294 else if( block_FifoSize( p_dec->p_owner->p_fifo ) > 50000000 /* 50 MB */ )
296 /* FIXME: ideally we would check the time amount of data
297 * in the fifo instead of its size. */
298 msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
299 "consumed quickly enough), resetting fifo!" );
300 block_FifoEmpty( p_dec->p_owner->p_fifo );
303 block_FifoPut( p_dec->p_owner->p_fifo, p_block );
307 if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
309 if( p_block ) block_Release( p_block );
313 DecoderDecode( p_dec, p_block );
318 void input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush )
323 if( p_dec->p_owner->b_own_thread && b_flush )
324 block_FifoEmpty( p_dec->p_owner->p_fifo );
326 /* Send a special block */
327 p_null = block_New( p_dec, 128 );
328 p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
329 /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
330 if( p_dec->p_owner->p_packetizer && b_flush )
331 p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
332 memset( p_null->p_buffer, 0, p_null->i_buffer );
334 input_DecoderDecode( p_dec, p_null );
337 bool input_DecoderEmpty( decoder_t * p_dec )
339 if( p_dec->p_owner->b_own_thread
340 && block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
347 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
351 vlc_mutex_lock( &p_dec->p_owner->lock_cc );
352 for( i = 0; i < 4; i++ )
353 pb_present[i] = p_dec->p_owner->pb_cc_present[i];
354 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
356 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
358 decoder_owner_sys_t *p_owner = p_dec->p_owner;
360 //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
362 if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
367 static const vlc_fourcc_t fcc[4] = {
368 VLC_FOURCC('c', 'c', '1', ' '),
369 VLC_FOURCC('c', 'c', '2', ' '),
370 VLC_FOURCC('c', 'c', '3', ' '),
371 VLC_FOURCC('c', 'c', '4', ' '),
376 es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
377 p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_dec->p_owner->p_sout );
380 msg_Err( p_dec, "could not create decoder" );
381 intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
382 _("VLC could not open the decoder module.") );
385 else if( !p_cc->p_module )
387 DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
388 DeleteDecoder( p_cc );
389 vlc_object_release( p_cc );
393 vlc_mutex_lock( &p_owner->lock_cc );
394 p_dec->p_owner->pp_cc[i_channel] = p_cc;
395 vlc_mutex_unlock( &p_owner->lock_cc );
401 vlc_mutex_lock( &p_owner->lock_cc );
402 p_cc = p_dec->p_owner->pp_cc[i_channel];
403 p_dec->p_owner->pp_cc[i_channel] = NULL;
404 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
408 vlc_object_kill( p_cc );
409 module_Unneed( p_cc, p_cc->p_module );
410 DeleteDecoder( p_cc );
411 vlc_object_release( p_cc );
416 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
418 decoder_owner_sys_t *p_owner = p_dec->p_owner;
421 if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
424 vlc_mutex_lock( &p_owner->lock_cc );
425 *pb_decode = p_dec->p_owner->pp_cc[i_channel] != NULL;
426 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
431 * Create a decoder object
433 * \param p_input the input thread
434 * \param p_es the es descriptor
435 * \param i_object_type Object type as define in include/vlc_objects.h
436 * \return the decoder object
438 static decoder_t * CreateDecoder( input_thread_t *p_input,
439 es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
442 decoder_owner_sys_t *p_owner;
445 p_dec = vlc_object_create( p_input, i_object_type );
449 p_dec->pf_decode_audio = NULL;
450 p_dec->pf_decode_video = NULL;
451 p_dec->pf_decode_sub = NULL;
452 p_dec->pf_get_cc = NULL;
453 p_dec->pf_packetize = NULL;
455 /* Initialize the decoder fifo */
456 p_dec->p_module = NULL;
458 memset( &null_es_format, 0, sizeof(es_format_t) );
459 es_format_Copy( &p_dec->fmt_in, fmt );
460 es_format_Copy( &p_dec->fmt_out, &null_es_format );
462 /* Allocate our private structure for the decoder */
463 p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
464 if( p_dec->p_owner == NULL )
466 vlc_object_release( p_dec );
469 p_dec->p_owner->b_own_thread = true;
470 p_dec->p_owner->i_preroll_end = -1;
471 p_dec->p_owner->p_input = p_input;
472 p_dec->p_owner->p_aout = NULL;
473 p_dec->p_owner->p_aout_input = NULL;
474 p_dec->p_owner->p_vout = NULL;
475 p_dec->p_owner->p_spu_vout = NULL;
476 p_dec->p_owner->i_spu_channel = 0;
477 p_dec->p_owner->p_sout = p_sout;
478 p_dec->p_owner->p_sout_input = NULL;
479 p_dec->p_owner->p_packetizer = NULL;
482 if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
484 free( p_dec->p_owner );
485 vlc_object_release( p_dec );
489 /* Set buffers allocation callbacks for the decoders */
490 p_dec->pf_aout_buffer_new = aout_new_buffer;
491 p_dec->pf_aout_buffer_del = aout_del_buffer;
492 p_dec->pf_vout_buffer_new = vout_new_buffer;
493 p_dec->pf_vout_buffer_del = vout_del_buffer;
494 p_dec->pf_picture_link = vout_link_picture;
495 p_dec->pf_picture_unlink = vout_unlink_picture;
496 p_dec->pf_spu_buffer_new = spu_new_buffer;
497 p_dec->pf_spu_buffer_del = spu_del_buffer;
499 vlc_object_attach( p_dec, p_input );
501 /* Find a suitable decoder/packetizer module */
502 if( i_object_type == VLC_OBJECT_DECODER )
503 p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
505 p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
507 /* Check if decoder requires already packetized data */
508 if( i_object_type == VLC_OBJECT_DECODER &&
509 p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
511 p_dec->p_owner->p_packetizer =
512 vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
513 if( p_dec->p_owner->p_packetizer )
515 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
518 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
521 vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
523 p_dec->p_owner->p_packetizer->p_module =
524 module_Need( p_dec->p_owner->p_packetizer,
525 "packetizer", "$packetizer", 0 );
527 if( !p_dec->p_owner->p_packetizer->p_module )
529 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
530 vlc_object_detach( p_dec->p_owner->p_packetizer );
531 vlc_object_release( p_dec->p_owner->p_packetizer );
536 /* Copy ourself the input replay gain */
537 if( fmt->i_cat == AUDIO_ES )
539 for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
541 if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
543 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
544 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
546 if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
548 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
549 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
554 p_owner->b_cc_supported = false;
555 if( i_object_type == VLC_OBJECT_DECODER )
557 if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
558 p_owner->b_cc_supported = true;
559 if( p_dec->pf_get_cc )
560 p_owner->b_cc_supported = true;
563 vlc_mutex_init( &p_owner->lock_cc );
564 for( i = 0; i < 4; i++ )
566 p_owner->pb_cc_present[i] = false;
567 p_owner->pp_cc[i] = NULL;
573 * The decoding main loop
575 * \param p_dec the decoder
577 static void* DecoderThread( vlc_object_t *p_this )
579 decoder_t * p_dec = (decoder_t *)p_this;
581 int canc = vlc_savecancel ();
583 /* The decoder's main loop */
584 while( !p_dec->b_die && !p_dec->b_error )
586 if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
591 if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
597 while( !p_dec->b_die )
599 /* Trash all received PES packets */
600 p_block = block_FifoGet( p_dec->p_owner->p_fifo );
601 if( p_block ) block_Release( p_block );
604 /* We do it here because of the dll loader that wants close() in the
605 * same thread than open()/decode() */
606 module_Unneed( p_dec, p_dec->p_module );
607 vlc_restorecancel (canc);
611 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
613 if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
614 *pi_preroll = INT64_MAX;
615 else if( p->i_pts > 0 )
616 *pi_preroll = __MIN( *pi_preroll, p->i_pts );
617 else if( p->i_dts > 0 )
618 *pi_preroll = __MIN( *pi_preroll, p->i_dts );
620 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
622 input_thread_t *p_input = p_dec->p_owner->p_input;
623 const int i_rate = p_block->i_rate;
624 aout_buffer_t *p_aout_buf;
626 while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
628 aout_instance_t *p_aout = p_dec->p_owner->p_aout;
629 aout_input_t *p_aout_input = p_dec->p_owner->p_aout_input;
633 /* It prevent freezing VLC in case of broken decoder */
634 aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
636 block_Release( p_block );
639 vlc_mutex_lock( &p_input->p->counters.counters_lock );
640 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
641 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
643 if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
645 aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
649 if( p_dec->p_owner->i_preroll_end > 0 )
651 /* FIXME TODO flush audio output (don't know how to do that) */
652 msg_Dbg( p_dec, "End of audio preroll" );
653 p_dec->p_owner->i_preroll_end = -1;
655 aout_DecPlay( p_aout, p_aout_input, p_aout_buf, i_rate );
658 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
665 assert( p_dec_cc->pf_get_cc != NULL );
667 /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
668 if( !p_dec->p_owner->b_cc_supported )
671 p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
675 vlc_mutex_lock( &p_dec->p_owner->lock_cc );
676 for( i = 0, i_cc_decoder = 0; i < 4; i++ )
678 p_dec->p_owner->pb_cc_present[i] |= pb_present[i];
679 if( p_dec->p_owner->pp_cc[i] )
683 for( i = 0; i < 4; i++ )
685 if( !p_dec->p_owner->pp_cc[i] )
688 if( i_cc_decoder > 1 )
689 DecoderDecode( p_dec->p_owner->pp_cc[i], block_Duplicate( p_cc ) );
691 DecoderDecode( p_dec->p_owner->pp_cc[i], p_cc );
694 vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
696 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
698 vlc_mutex_lock( &p_vout->picture_lock );
700 if( p_pic->i_status == READY_PICTURE )
702 /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
705 else if( p_pic->i_refcount > 0 )
707 p_pic->i_status = DISPLAYED_PICTURE;
711 p_pic->i_status = DESTROYED_PICTURE;
712 p_vout->i_heap_size--;
715 vlc_mutex_unlock( &p_vout->picture_lock );
717 static void VoutFlushPicture( vout_thread_t *p_vout )
720 vlc_mutex_lock( &p_vout->picture_lock );
721 for( i = 0; i < p_vout->render.i_pictures; i++ )
723 picture_t *p_pic = p_vout->render.pp_picture[i];
725 if( p_pic->i_status == READY_PICTURE ||
726 p_pic->i_status == DISPLAYED_PICTURE )
728 /* We cannot change picture status if it is in READY_PICTURE state,
729 * Just make sure they won't be displayed */
733 vlc_mutex_unlock( &p_vout->picture_lock );
736 static void DecoderOptimizePtsDelay( decoder_t *p_dec )
738 input_thread_t *p_input = p_dec->p_owner->p_input;
739 vout_thread_t *p_vout = p_dec->p_owner->p_vout;
740 input_thread_private_t *p_priv = p_input->p;
742 picture_t *p_old = NULL;
743 picture_t *p_young = NULL;
746 /* Enable with --auto-adjust-pts-delay */
747 if( !p_priv->pts_adjust.b_auto_adjust )
750 for( i = 0; i < I_RENDERPICTURES; i++ )
752 picture_t *p_pic = PP_RENDERPICTURE[i];
754 if( p_pic->i_status != READY_PICTURE )
757 if( !p_old || p_pic->date < p_old->date )
759 if( !p_young || p_pic->date > p_young->date )
763 if( !p_young || !p_old )
766 /* Try to find if we can reduce the pts
767 * This first draft is way to simple, and we can't say if the
768 * algo will converge. It's also full of constants.
769 * But this simple algo allows to reduce the latency
771 * The whole point of this, is to bypass the pts_delay set
772 * by the access but also the delay arbitraly set by
774 * Actually the remote server's muxer may set up a
775 * pts<->dts delay in the muxed stream. That is
776 * why we may end up in having a negative pts_delay,
777 * to compensate that artificial delay. */
778 const mtime_t i_buffer_length = p_young->date - p_old->date;
779 int64_t i_pts_slide = 0;
780 if( i_buffer_length < 10000 )
782 if( p_priv->pts_adjust.i_num_faulty > 10 )
784 i_pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
785 p_priv->pts_adjust.i_num_faulty = 0;
787 if( p_priv->pts_adjust.b_to_high )
789 p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
790 p_priv->pts_adjust.i_num_faulty = 0;
792 p_priv->pts_adjust.i_num_faulty++;
794 else if( i_buffer_length > 100000 )
796 if( p_priv->pts_adjust.i_num_faulty > 25 )
798 i_pts_slide = -i_buffer_length/2;
799 p_priv->pts_adjust.i_num_faulty = 0;
801 if( p_priv->pts_adjust.b_to_high )
803 p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
804 p_priv->pts_adjust.i_num_faulty = 0;
806 p_priv->pts_adjust.i_num_faulty++;
808 if( i_pts_slide != 0 )
810 const mtime_t i_pts_delay_org = p_input->i_pts_delay;
812 p_input->i_pts_delay += i_pts_slide;
814 /* Don't play with the pts delay for more than -2<->3sec */
815 if( p_input->i_pts_delay < -2000000 )
816 p_input->i_pts_delay = -2000000;
817 else if( p_input->i_pts_delay > 3000000 )
818 p_input->i_pts_delay = 3000000;
819 i_pts_slide = p_input->i_pts_delay - i_pts_delay_org;
821 msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
822 (int)i_pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)i_buffer_length/1000);
824 vlc_mutex_lock( &p_vout->picture_lock );
825 /* Slide all the picture */
826 for( i = 0; i < I_RENDERPICTURES; i++ )
827 PP_RENDERPICTURE[i]->date += i_pts_slide;
828 /* FIXME: slide aout/spu */
829 vlc_mutex_unlock( &p_vout->picture_lock );
833 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
835 input_thread_t *p_input = p_dec->p_owner->p_input;
838 while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
840 vout_thread_t *p_vout = p_dec->p_owner->p_vout;
843 /* It prevent freezing VLC in case of broken decoder */
844 VoutDisplayedPicture( p_vout, p_pic );
846 block_Release( p_block );
850 vlc_mutex_lock( &p_input->p->counters.counters_lock );
851 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
852 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
854 if( p_pic->date < p_dec->p_owner->i_preroll_end )
856 VoutDisplayedPicture( p_vout, p_pic );
860 if( p_dec->p_owner->i_preroll_end > 0 )
862 msg_Dbg( p_dec, "End of video preroll" );
864 VoutFlushPicture( p_vout );
866 p_dec->p_owner->i_preroll_end = -1;
869 if( ( !p_dec->p_owner->p_packetizer || !p_dec->p_owner->p_packetizer->pf_get_cc ) && p_dec->pf_get_cc )
870 DecoderGetCc( p_dec, p_dec );
872 vout_DatePicture( p_vout, p_pic, p_pic->date );
874 DecoderOptimizePtsDelay( p_dec );
876 vout_DisplayPicture( p_vout, p_pic );
883 * \param p_dec the decoder object
884 * \param p_block the block to decode
885 * \return VLC_SUCCESS or an error code
887 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
889 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
890 const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
892 if( p_block && p_block->i_buffer <= 0 )
894 block_Release( p_block );
899 if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
901 block_t *p_sout_block;
903 while( ( p_sout_block =
904 p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
906 if( !p_dec->p_owner->p_sout_input )
908 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
910 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
911 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
912 if( p_dec->fmt_in.psz_language )
914 if( p_dec->p_owner->sout.psz_language )
915 free( p_dec->p_owner->sout.psz_language );
916 p_dec->p_owner->sout.psz_language =
917 strdup( p_dec->fmt_in.psz_language );
920 p_dec->p_owner->p_sout_input =
921 sout_InputNew( p_dec->p_owner->p_sout,
922 &p_dec->p_owner->sout );
924 if( p_dec->p_owner->p_sout_input == NULL )
926 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
927 (char *)&p_dec->p_owner->sout.i_codec );
928 p_dec->b_error = true;
930 while( p_sout_block )
932 block_t *p_next = p_sout_block->p_next;
933 block_Release( p_sout_block );
934 p_sout_block = p_next;
940 while( p_sout_block )
942 block_t *p_next = p_sout_block->p_next;
944 p_sout_block->p_next = NULL;
945 p_sout_block->i_rate = i_rate;
947 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
950 p_sout_block = p_next;
953 /* For now it's enough, as only sout impact on this flag */
954 if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
955 p_dec->p_owner->p_input->p->b_out_pace_control )
957 msg_Dbg( p_dec, "switching to sync mode" );
958 p_dec->p_owner->p_input->p->b_out_pace_control = false;
960 else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
961 !p_dec->p_owner->p_input->p->b_out_pace_control )
963 msg_Dbg( p_dec, "switching to async mode" );
964 p_dec->p_owner->p_input->p->b_out_pace_control = true;
970 if( p_dec->fmt_in.i_cat == AUDIO_ES )
973 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
975 if( p_dec->p_owner->p_packetizer )
977 block_t *p_packetized_block;
978 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
980 while( (p_packetized_block =
981 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
983 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
985 es_format_Clean( &p_dec->fmt_in );
986 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
989 while( p_packetized_block )
991 block_t *p_next = p_packetized_block->p_next;
992 p_packetized_block->p_next = NULL;
993 p_packetized_block->i_rate = i_rate;
995 DecoderDecodeAudio( p_dec, p_packetized_block );
997 p_packetized_block = p_next;
1003 DecoderDecodeAudio( p_dec, p_block );
1006 else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1009 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
1011 if( p_dec->p_owner->p_packetizer )
1013 block_t *p_packetized_block;
1014 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
1016 while( (p_packetized_block =
1017 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1019 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1021 es_format_Clean( &p_dec->fmt_in );
1022 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1024 if( p_packetizer->pf_get_cc )
1025 DecoderGetCc( p_dec, p_packetizer );
1027 while( p_packetized_block )
1029 block_t *p_next = p_packetized_block->p_next;
1030 p_packetized_block->p_next = NULL;
1031 p_packetized_block->i_rate = i_rate;
1033 DecoderDecodeVideo( p_dec, p_packetized_block );
1035 p_packetized_block = p_next;
1041 DecoderDecodeVideo( p_dec, p_block );
1044 else if( p_dec->fmt_in.i_cat == SPU_ES )
1046 input_thread_t *p_input = p_dec->p_owner->p_input;
1047 vout_thread_t *p_vout;
1048 subpicture_t *p_spu;
1051 DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
1053 while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1055 vlc_mutex_lock( &p_input->p->counters.counters_lock );
1056 stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1057 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1059 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1060 if( p_vout && p_sys->p_spu_vout == p_vout )
1062 /* Prerool does not work very well with subtitle */
1063 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
1064 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
1065 spu_DestroySubpicture( p_vout->p_spu, p_spu );
1067 spu_DisplaySubpicture( p_vout->p_spu, p_spu );
1071 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1074 vlc_object_release( p_vout );
1079 msg_Err( p_dec, "unknown ES format" );
1083 return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
1087 * Destroys a decoder object
1089 * \param p_dec the decoder object
1092 static void DeleteDecoder( decoder_t * p_dec )
1094 msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1095 (char*)&p_dec->fmt_in.i_codec,
1096 (unsigned)block_FifoCount( p_dec->p_owner->p_fifo ) );
1098 /* Free all packets still in the decoder fifo. */
1099 block_FifoEmpty( p_dec->p_owner->p_fifo );
1100 block_FifoRelease( p_dec->p_owner->p_fifo );
1103 if( p_dec->p_owner->p_aout_input )
1104 aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
1105 if( p_dec->p_owner->p_aout )
1107 vlc_object_release( p_dec->p_owner->p_aout );
1108 p_dec->p_owner->p_aout = NULL;
1110 if( p_dec->p_owner->p_vout )
1114 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1115 /* Hack to make sure all the the pictures are freed by the decoder */
1116 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1119 if( p_pic->i_status == RESERVED_PICTURE )
1120 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1121 if( p_pic->i_refcount > 0 )
1122 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1126 /* We are about to die. Reattach video output to p_vlc. */
1127 vout_Request( p_dec, p_dec->p_owner->p_vout, NULL );
1131 if( p_dec->p_owner->p_sout_input )
1133 sout_InputDelete( p_dec->p_owner->p_sout_input );
1134 es_format_Clean( &p_dec->p_owner->sout );
1138 if( p_dec->fmt_in.i_cat == SPU_ES )
1140 vout_thread_t *p_vout;
1142 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1145 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1146 p_dec->p_owner->i_spu_channel );
1147 vlc_object_release( p_vout );
1151 es_format_Clean( &p_dec->fmt_in );
1152 es_format_Clean( &p_dec->fmt_out );
1154 if( p_dec->p_owner->p_packetizer )
1156 module_Unneed( p_dec->p_owner->p_packetizer,
1157 p_dec->p_owner->p_packetizer->p_module );
1158 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
1159 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
1160 vlc_object_detach( p_dec->p_owner->p_packetizer );
1161 vlc_object_release( p_dec->p_owner->p_packetizer );
1164 vlc_mutex_destroy( &p_dec->p_owner->lock_cc );
1166 vlc_object_detach( p_dec );
1168 free( p_dec->p_owner );
1171 /*****************************************************************************
1172 * Buffers allocation callbacks for the decoders
1173 *****************************************************************************/
1174 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1176 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1177 aout_buffer_t *p_buffer;
1179 if( p_sys->p_aout_input != NULL &&
1180 ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
1181 p_dec->fmt_out.audio.i_original_channels !=
1182 p_sys->audio.i_original_channels ||
1183 p_dec->fmt_out.audio.i_bytes_per_frame !=
1184 p_sys->audio.i_bytes_per_frame ) )
1186 /* Parameters changed, restart the aout */
1187 aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
1188 p_sys->p_aout_input = NULL;
1191 if( p_sys->p_aout_input == NULL )
1193 audio_sample_format_t format;
1194 int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1196 p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1197 p_sys->audio = p_dec->fmt_out.audio;
1199 memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
1200 if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1201 == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1203 if ( i_force_dolby == 1 )
1205 format.i_original_channels = format.i_original_channels |
1206 AOUT_CHAN_DOLBYSTEREO;
1208 else /* i_force_dolby == 2 */
1210 format.i_original_channels = format.i_original_channels &
1211 ~AOUT_CHAN_DOLBYSTEREO;
1215 p_sys->p_aout_input =
1216 aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
1217 if( p_sys->p_aout_input == NULL )
1219 msg_Err( p_dec, "failed to create audio output" );
1220 p_dec->b_error = true;
1223 p_dec->fmt_out.audio.i_bytes_per_frame =
1224 p_sys->audio.i_bytes_per_frame;
1227 p_buffer = aout_DecNewBuffer( p_sys->p_aout_input, i_samples );
1232 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1234 aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
1235 p_dec->p_owner->p_aout_input, p_buffer );
1239 int vout_CountPictureAvailable( vout_thread_t *p_vout );
1241 static picture_t *vout_new_buffer( decoder_t *p_dec )
1243 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1246 if( p_sys->p_vout == NULL ||
1247 p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
1248 p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
1249 p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
1250 p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
1252 if( !p_dec->fmt_out.video.i_width ||
1253 !p_dec->fmt_out.video.i_height )
1255 /* Can't create a new vout without display size */
1259 if( !p_dec->fmt_out.video.i_visible_width ||
1260 !p_dec->fmt_out.video.i_visible_height )
1262 if( p_dec->fmt_in.video.i_visible_width &&
1263 p_dec->fmt_in.video.i_visible_height )
1265 p_dec->fmt_out.video.i_visible_width =
1266 p_dec->fmt_in.video.i_visible_width;
1267 p_dec->fmt_out.video.i_visible_height =
1268 p_dec->fmt_in.video.i_visible_height;
1272 p_dec->fmt_out.video.i_visible_width =
1273 p_dec->fmt_out.video.i_width;
1274 p_dec->fmt_out.video.i_visible_height =
1275 p_dec->fmt_out.video.i_height;
1279 if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1280 var_CreateGetBool( p_dec, "hdtv-fix" ) )
1282 p_dec->fmt_out.video.i_visible_height = 1080;
1283 p_dec->fmt_out.video.i_sar_num *= 135;
1284 p_dec->fmt_out.video.i_sar_den *= 136;
1285 msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1288 if( !p_dec->fmt_out.video.i_sar_num ||
1289 !p_dec->fmt_out.video.i_sar_den )
1291 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1292 p_dec->fmt_out.video.i_visible_height;
1294 p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1295 p_dec->fmt_out.video.i_visible_width;
1298 vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1299 &p_dec->fmt_out.video.i_sar_den,
1300 p_dec->fmt_out.video.i_sar_num,
1301 p_dec->fmt_out.video.i_sar_den, 50000 );
1303 p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1304 p_sys->video = p_dec->fmt_out.video;
1306 p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1307 &p_dec->fmt_out.video );
1308 if( p_sys->p_vout == NULL )
1310 msg_Err( p_dec, "failed to create video output" );
1311 p_dec->b_error = true;
1315 if( p_sys->video.i_rmask )
1316 p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1317 if( p_sys->video.i_gmask )
1318 p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1319 if( p_sys->video.i_bmask )
1320 p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1323 /* Get a new picture
1325 for( p_pic = NULL; ; )
1327 int i_pic, i_ready_pic;
1329 if( p_dec->b_die || p_dec->b_error )
1332 /* The video filter chain required that there is always 1 free buffer
1333 * that it will use as temporary one. It will release the temporary
1334 * buffer once its work is done, so this check is safe even if we don't
1335 * lock around both count() and create().
1337 if( vout_CountPictureAvailable( p_sys->p_vout ) >= 2 )
1339 p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 );
1344 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1345 /* Check the decoder doesn't leak pictures */
1346 for( i_pic = 0, i_ready_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures; i_pic++ )
1348 if( p_pic->i_status == READY_PICTURE )
1351 /* If we have at least 2 ready pictures, wait for the vout thread to
1353 if( i_ready_pic >= 2 )
1359 if( p_pic->i_status == DISPLAYED_PICTURE )
1361 /* If at least one displayed picture is not referenced
1362 * let vout free it */
1363 if( p_pic->i_refcount == 0 )
1367 if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1369 /* Too many pictures are still referenced, there is probably a bug
1370 * with the decoder */
1371 msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1373 /* Just free all the pictures */
1374 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1377 if( p_pic->i_status == RESERVED_PICTURE )
1378 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1379 if( p_pic->i_refcount > 0 )
1380 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1385 msleep( VOUT_OUTMEM_SLEEP );
1391 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1393 VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1396 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1398 vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1401 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1403 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1406 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1408 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1409 vout_thread_t *p_vout = NULL;
1410 subpicture_t *p_subpic;
1411 int i_attempts = 30;
1413 while( i_attempts-- )
1415 if( p_dec->b_die || p_dec->b_error ) break;
1417 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1420 msleep( VOUT_DISPLAY_DELAY );
1425 msg_Warn( p_dec, "no vout found, dropping subpicture" );
1429 if( p_sys->p_spu_vout != p_vout )
1431 spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1432 &p_sys->i_spu_channel );
1433 p_sys->p_spu_vout = p_vout;
1436 p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1439 p_subpic->i_channel = p_sys->i_spu_channel;
1442 vlc_object_release( p_vout );
1447 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1449 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1450 vout_thread_t *p_vout = NULL;
1452 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1453 if( !p_vout || p_sys->p_spu_vout != p_vout )
1456 vlc_object_release( p_vout );
1457 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1461 spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1463 vlc_object_release( p_vout );