1 /*****************************************************************************
2 * input.c : internal management of input streams for the audio output
3 *****************************************************************************
4 * Copyright (C) 2002-2007 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
34 #include <vlc_common.h>
41 #include <vlc_input.h>
42 #include <vlc_vout.h> /* for vout_Request */
43 #include <vlc_modules.h>
46 #include <vlc_filter.h>
49 #include "aout_internal.h"
51 #define AOUT_ASSERT_MIXER_LOCKED vlc_assert_locked( &p_aout->mixer_lock )
52 #define AOUT_ASSERT_INPUT_LOCKED vlc_assert_locked( &p_input->lock )
54 static void inputFailure( aout_instance_t *, aout_input_t *, const char * );
55 static void inputDrop( aout_input_t *, aout_buffer_t * );
56 static void inputResamplingStop( aout_input_t *p_input );
58 static int VisualizationCallback( vlc_object_t *, char const *,
59 vlc_value_t, vlc_value_t, void * );
60 static int EqualizerCallback( vlc_object_t *, char const *,
61 vlc_value_t, vlc_value_t, void * );
62 static int ReplayGainCallback( vlc_object_t *, char const *,
63 vlc_value_t, vlc_value_t, void * );
64 static void ReplayGainSelect( aout_instance_t *, aout_input_t * );
66 static vout_thread_t *RequestVout( void *,
67 vout_thread_t *, video_format_t *, bool );
69 /*****************************************************************************
70 * aout_InputNew : allocate a new input and rework the filter pipeline
71 *****************************************************************************/
72 int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t *p_request_vout )
74 audio_sample_format_t chain_input_format;
75 audio_sample_format_t chain_output_format;
76 vlc_value_t val, text;
77 char *psz_filters, *psz_visual, *psz_scaletempo;
80 aout_FormatPrint( p_aout, "input", &p_input->input );
82 p_input->i_nb_resamplers = p_input->i_nb_filters = 0;
85 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
86 p_input->mixer.begin = NULL;
91 p_input->request_vout = *p_request_vout;
95 p_input->request_vout.pf_request_vout = RequestVout;
96 p_input->request_vout.p_private = p_aout;
99 /* Prepare format structure */
100 chain_input_format = p_input->input;
101 chain_output_format = p_aout->mixer_format;
102 chain_output_format.i_rate = p_input->input.i_rate;
103 aout_FormatPrepare( &chain_output_format );
105 /* Now add user filters */
106 if( var_Type( p_aout, "visual" ) == 0 )
108 var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
109 text.psz_string = _("Visualizations");
110 var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
111 val.psz_string = (char*)""; text.psz_string = _("Disable");
112 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
113 val.psz_string = (char*)"spectrometer"; text.psz_string = _("Spectrometer");
114 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
115 val.psz_string = (char*)"scope"; text.psz_string = _("Scope");
116 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
117 val.psz_string = (char*)"spectrum"; text.psz_string = _("Spectrum");
118 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
119 val.psz_string = (char*)"vuMeter"; text.psz_string = _("Vu meter");
120 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
122 /* Look for goom plugin */
123 if( module_exists( "goom" ) )
125 val.psz_string = (char*)"goom"; text.psz_string = (char*)"Goom";
126 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
129 /* Look for libprojectM plugin */
130 if( module_exists( "projectm" ) )
132 val.psz_string = (char*)"projectm"; text.psz_string = (char*)"projectM";
133 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
136 if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
138 var_SetString( p_aout, "visual", val.psz_string );
139 free( val.psz_string );
141 var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
144 if( var_Type( p_aout, "equalizer" ) == 0 )
146 module_config_t *p_config;
149 p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
150 if( p_config && p_config->i_list )
152 var_Create( p_aout, "equalizer",
153 VLC_VAR_STRING | VLC_VAR_HASCHOICE );
154 text.psz_string = _("Equalizer");
155 var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
157 val.psz_string = (char*)""; text.psz_string = _("Disable");
158 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
160 for( i = 0; i < p_config->i_list; i++ )
162 val.psz_string = (char *)p_config->ppsz_list[i];
163 text.psz_string = (char *)p_config->ppsz_list_text[i];
164 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
168 var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
172 if( var_Type( p_aout, "audio-filter" ) == 0 )
174 var_Create( p_aout, "audio-filter",
175 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
176 text.psz_string = _("Audio filters");
177 var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
179 if( var_Type( p_aout, "audio-visual" ) == 0 )
181 var_Create( p_aout, "audio-visual",
182 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
183 text.psz_string = _("Audio visualizations");
184 var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
187 if( var_Type( p_aout, "audio-replay-gain-mode" ) == 0 )
189 module_config_t *p_config;
192 p_config = config_FindConfig( VLC_OBJECT(p_aout), "audio-replay-gain-mode" );
193 if( p_config && p_config->i_list )
195 var_Create( p_aout, "audio-replay-gain-mode",
196 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
198 text.psz_string = _("Replay gain");
199 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL );
201 for( i = 0; i < p_config->i_list; i++ )
203 val.psz_string = (char *)p_config->ppsz_list[i];
204 text.psz_string = (char *)p_config->ppsz_list_text[i];
205 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
209 var_AddCallback( p_aout, "audio-replay-gain-mode", ReplayGainCallback, NULL );
212 if( var_Type( p_aout, "audio-replay-gain-preamp" ) == 0 )
214 var_Create( p_aout, "audio-replay-gain-preamp",
215 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
217 if( var_Type( p_aout, "audio-replay-gain-default" ) == 0 )
219 var_Create( p_aout, "audio-replay-gain-default",
220 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
222 if( var_Type( p_aout, "audio-replay-gain-peak-protection" ) == 0 )
224 var_Create( p_aout, "audio-replay-gain-peak-protection",
225 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
228 psz_filters = var_GetString( p_aout, "audio-filter" );
229 psz_visual = var_GetString( p_aout, "audio-visual");
230 psz_scaletempo = var_InheritBool( p_aout, "audio-time-stretch" ) ? strdup( "scaletempo" ) : NULL;
232 p_input->b_recycle_vout = psz_visual && *psz_visual;
234 /* parse user filter lists */
235 char *const ppsz_array[] = { psz_scaletempo, psz_filters, psz_visual };
236 p_input->p_playback_rate_filter = NULL;
238 for( i_visual = 0; i_visual < 3 && !AOUT_FMT_NON_LINEAR(&chain_output_format); i_visual++ )
240 char *psz_next = NULL;
241 char *psz_parser = ppsz_array[i_visual];
243 if( psz_parser == NULL || !*psz_parser )
246 while( psz_parser && *psz_parser )
248 filter_t * p_filter = NULL;
250 if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
252 msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
256 while( *psz_parser == ' ' && *psz_parser == ':' )
260 if( ( psz_next = strchr( psz_parser , ':' ) ) )
264 if( *psz_parser =='\0' )
269 /* Create a VLC object */
270 static const char typename[] = "audio filter";
271 p_filter = vlc_custom_create( p_aout, sizeof(*p_filter),
272 VLC_OBJECT_GENERIC, typename );
273 if( p_filter == NULL )
275 msg_Err( p_aout, "cannot add user filter %s (skipped)",
277 psz_parser = psz_next;
281 vlc_object_attach( p_filter , p_aout );
283 p_filter->p_owner = malloc( sizeof(*p_filter->p_owner) );
284 p_filter->p_owner->p_aout = p_aout;
285 p_filter->p_owner->p_input = p_input;
288 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
289 sizeof(audio_sample_format_t) );
290 p_filter->fmt_in.i_codec = chain_output_format.i_format;
291 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
292 sizeof(audio_sample_format_t) );
293 p_filter->fmt_out.i_codec = chain_output_format.i_format;
294 p_filter->pf_audio_buffer_new = aout_FilterBufferNew;
296 /* try to find the requested filter */
297 if( i_visual == 2 ) /* this can only be a visualization module */
299 p_filter->p_module = module_need( p_filter, "visualization2",
302 else /* this can be a audio filter module as well as a visualization module */
304 p_filter->p_module = module_need( p_filter, "audio filter",
307 if ( p_filter->p_module == NULL )
309 /* if the filter requested a special format, retry */
310 if ( !( AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio,
311 &chain_input_format )
312 && AOUT_FMTS_IDENTICAL( &p_filter->fmt_out.audio,
313 &chain_output_format ) ) )
315 aout_FormatPrepare( &p_filter->fmt_in.audio );
316 aout_FormatPrepare( &p_filter->fmt_out.audio );
317 p_filter->p_module = module_need( p_filter,
321 /* try visual filters */
324 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
325 sizeof(audio_sample_format_t) );
326 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
327 sizeof(audio_sample_format_t) );
328 p_filter->p_module = module_need( p_filter,
336 if ( p_filter->p_module == NULL )
338 msg_Err( p_aout, "cannot add user filter %s (skipped)",
341 free( p_filter->p_owner );
342 vlc_object_release( p_filter );
344 psz_parser = psz_next;
348 /* complete the filter chain if necessary */
349 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format,
350 &p_filter->fmt_in.audio ) )
352 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
353 &p_input->i_nb_filters,
355 &p_filter->fmt_in.audio ) < 0 )
357 msg_Err( p_aout, "cannot add user filter %s (skipped)",
360 module_unneed( p_filter, p_filter->p_module );
361 free( p_filter->p_owner );
362 vlc_object_release( p_filter );
364 psz_parser = psz_next;
370 p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
371 memcpy( &chain_input_format, &p_filter->fmt_out.audio,
372 sizeof( audio_sample_format_t ) );
374 if( i_visual == 0 ) /* scaletempo */
375 p_input->p_playback_rate_filter = p_filter;
377 /* next filter if any */
378 psz_parser = psz_next;
383 free( psz_scaletempo );
385 /* complete the filter chain if necessary */
386 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
388 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
389 &p_input->i_nb_filters,
391 &chain_output_format ) < 0 )
393 inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
398 /* Prepare hints for the buffer allocator. */
399 p_input->input_alloc.b_alloc = true;
400 p_input->input_alloc.i_bytes_per_sec = -1;
402 /* Create resamplers. */
403 if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer_format ) )
405 chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
406 p_aout->mixer_format.i_rate)
407 * (100 + AOUT_MAX_RESAMPLING)) / 100;
408 if ( chain_output_format.i_rate == p_aout->mixer_format.i_rate )
410 /* Just in case... */
411 chain_output_format.i_rate++;
413 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
414 &p_input->i_nb_resamplers,
415 &chain_output_format,
416 &p_aout->mixer_format ) < 0 )
418 inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
422 aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
423 p_input->i_nb_resamplers,
424 &p_input->input_alloc );
425 p_input->input_alloc.b_alloc = true;
427 /* Setup the initial rate of the resampler */
428 p_input->pp_resamplers[0]->fmt_in.audio.i_rate = p_input->input.i_rate;
430 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
432 if( ! p_input->p_playback_rate_filter && p_input->i_nb_resamplers > 0 )
434 p_input->p_playback_rate_filter = p_input->pp_resamplers[0];
437 aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
438 p_input->i_nb_filters,
439 &p_input->input_alloc );
440 p_input->input_alloc.b_alloc = true;
442 /* i_bytes_per_sec is still == -1 if no filters */
443 p_input->input_alloc.i_bytes_per_sec = __MAX(
444 p_input->input_alloc.i_bytes_per_sec,
445 (int)(p_input->input.i_bytes_per_frame
446 * p_input->input.i_rate
447 / p_input->input.i_frame_length) );
449 ReplayGainSelect( p_aout, p_input );
452 p_input->b_error = false;
453 p_input->i_last_input_rate = INPUT_RATE_DEFAULT;
458 /*****************************************************************************
459 * aout_InputDelete : delete an input
460 *****************************************************************************
461 * This function must be entered with the mixer lock.
462 *****************************************************************************/
463 int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input )
465 AOUT_ASSERT_MIXER_LOCKED;
466 if ( p_input->b_error )
469 /* XXX We need to update b_recycle_vout before calling aout_FiltersDestroyPipeline.
470 * FIXME They can be a race condition if audio-visual is updated between
471 * aout_InputDelete and aout_InputNew.
473 char *psz_visual = var_GetString( p_aout, "audio-visual");
474 p_input->b_recycle_vout = psz_visual && *psz_visual;
477 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
478 p_input->i_nb_filters );
479 p_input->i_nb_filters = 0;
480 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
481 p_input->i_nb_resamplers );
482 p_input->i_nb_resamplers = 0;
483 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
488 /*****************************************************************************
489 * aout_InputCheckAndRestart : restart an input
490 *****************************************************************************
491 * This function must be entered with the input and mixer lock.
492 *****************************************************************************/
493 void aout_InputCheckAndRestart( aout_instance_t * p_aout, aout_input_t * p_input )
495 AOUT_ASSERT_MIXER_LOCKED;
496 AOUT_ASSERT_INPUT_LOCKED;
498 if( !p_input->b_restart )
501 aout_lock_input_fifos( p_aout );
503 /* A little trick to avoid loosing our input fifo and properties */
505 uint8_t *p_first_byte_to_mix = p_input->mixer.begin;
506 aout_fifo_t fifo = p_input->mixer.fifo;
507 bool b_paused = p_input->b_paused;
508 mtime_t i_pause_date = p_input->i_pause_date;
510 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
512 aout_InputDelete( p_aout, p_input );
514 aout_InputNew( p_aout, p_input, &p_input->request_vout );
515 p_input->mixer.begin = p_first_byte_to_mix;
516 p_input->mixer.fifo = fifo;
517 p_input->b_paused = b_paused;
518 p_input->i_pause_date = i_pause_date;
520 p_input->b_restart = false;
522 aout_unlock_input_fifos( p_aout );
524 /*****************************************************************************
525 * aout_InputPlay : play a buffer
526 *****************************************************************************
527 * This function must be entered with the input lock.
528 *****************************************************************************/
529 /* XXX Do not activate it !! */
530 //#define AOUT_PROCESS_BEFORE_CHEKS
531 int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
532 aout_buffer_t * p_buffer, int i_input_rate )
535 AOUT_ASSERT_INPUT_LOCKED;
537 if( i_input_rate != INPUT_RATE_DEFAULT && p_input->p_playback_rate_filter == NULL )
539 inputDrop( p_input, p_buffer );
543 #ifdef AOUT_PROCESS_BEFORE_CHEKS
544 /* Run pre-filters. */
545 aout_FiltersPlay( p_aout, p_input->pp_filters, p_input->i_nb_filters,
550 /* Actually run the resampler now. */
551 if ( p_input->i_nb_resamplers > 0 )
553 const mtime_t i_date = p_buffer->i_pts;
554 aout_FiltersPlay( p_aout, p_input->pp_resamplers,
555 p_input->i_nb_resamplers,
561 if( p_buffer->i_nb_samples <= 0 )
563 block_Release( p_buffer );
568 /* Handle input rate change, but keep drift correction */
569 if( i_input_rate != p_input->i_last_input_rate )
571 unsigned int * const pi_rate = &p_input->p_playback_rate_filter->fmt_in.audio.i_rate;
572 #define F(r,ir) ( INPUT_RATE_DEFAULT * (r) / (ir) )
573 const int i_delta = *pi_rate - F(p_input->input.i_rate,p_input->i_last_input_rate);
574 *pi_rate = F(p_input->input.i_rate + i_delta, i_input_rate);
576 p_input->i_last_input_rate = i_input_rate;
579 /* We don't care if someone changes the start date behind our back after
580 * this. We'll deal with that when pushing the buffer, and compensate
581 * with the next incoming buffer. */
582 aout_lock_input_fifos( p_aout );
583 start_date = aout_FifoNextStart( p_aout, &p_input->mixer.fifo );
584 aout_unlock_input_fifos( p_aout );
586 if ( start_date != 0 && start_date < mdate() )
588 /* The decoder is _very_ late. This can only happen if the user
589 * pauses the stream (or if the decoder is buggy, which cannot
591 msg_Warn( p_aout, "computed PTS is out of range (%"PRId64"), "
592 "clearing out", mdate() - start_date );
593 aout_lock_input_fifos( p_aout );
594 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
595 p_input->mixer.begin = NULL;
596 aout_unlock_input_fifos( p_aout );
597 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
598 msg_Warn( p_aout, "timing screwed, stopping resampling" );
599 inputResamplingStop( p_input );
600 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
604 if ( p_buffer->i_pts < mdate() + AOUT_MIN_PREPARE_TIME )
606 /* The decoder gives us f*cked up PTS. It's its business, but we
607 * can't present it anyway, so drop the buffer. */
608 msg_Warn( p_aout, "PTS is out of range (%"PRId64"), dropping buffer",
609 mdate() - p_buffer->i_pts );
611 inputDrop( p_input, p_buffer );
612 inputResamplingStop( p_input );
616 /* If the audio drift is too big then it's not worth trying to resample
618 mtime_t i_pts_tolerance = 3 * AOUT_PTS_TOLERANCE * i_input_rate / INPUT_RATE_DEFAULT;
619 if ( start_date != 0 &&
620 ( start_date < p_buffer->i_pts - i_pts_tolerance ) )
622 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), clearing out",
623 start_date - p_buffer->i_pts );
624 aout_lock_input_fifos( p_aout );
625 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
626 p_input->mixer.begin = NULL;
627 aout_unlock_input_fifos( p_aout );
628 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
629 msg_Warn( p_aout, "timing screwed, stopping resampling" );
630 inputResamplingStop( p_input );
631 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
634 else if ( start_date != 0 &&
635 ( start_date > p_buffer->i_pts + i_pts_tolerance) )
637 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), dropping buffer",
638 start_date - p_buffer->i_pts );
639 inputDrop( p_input, p_buffer );
643 if ( start_date == 0 ) start_date = p_buffer->i_pts;
645 #ifndef AOUT_PROCESS_BEFORE_CHEKS
646 /* Run pre-filters. */
647 aout_FiltersPlay( p_input->pp_filters, p_input->i_nb_filters, &p_buffer );
652 /* Run the resampler if needed.
653 * We first need to calculate the output rate of this resampler. */
654 if ( ( p_input->i_resampling_type == AOUT_RESAMPLING_NONE ) &&
655 ( start_date < p_buffer->i_pts - AOUT_PTS_TOLERANCE
656 || start_date > p_buffer->i_pts + AOUT_PTS_TOLERANCE ) &&
657 p_input->i_nb_resamplers > 0 )
659 /* Can happen in several circumstances :
660 * 1. A problem at the input (clock drift)
661 * 2. A small pause triggered by the user
662 * 3. Some delay in the output stage, causing a loss of lip
664 * Solution : resample the buffer to avoid a scratch.
666 mtime_t drift = p_buffer->i_pts - start_date;
668 p_input->i_resamp_start_date = mdate();
669 p_input->i_resamp_start_drift = (int)drift;
672 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
674 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
676 msg_Warn( p_aout, "buffer is %"PRId64" %s, triggering %ssampling",
677 drift > 0 ? drift : -drift,
678 drift > 0 ? "in advance" : "late",
679 drift > 0 ? "down" : "up");
682 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
684 /* Resampling has been triggered previously (because of dates
685 * mismatch). We want the resampling to happen progressively so
686 * it isn't too audible to the listener. */
688 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
690 p_input->pp_resamplers[0]->fmt_in.audio.i_rate += 2; /* Hz */
694 p_input->pp_resamplers[0]->fmt_in.audio.i_rate -= 2; /* Hz */
697 /* Check if everything is back to normal, in which case we can stop the
699 unsigned int i_nominal_rate =
700 (p_input->pp_resamplers[0] == p_input->p_playback_rate_filter)
701 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / i_input_rate
702 : p_input->input.i_rate;
703 if( p_input->pp_resamplers[0]->fmt_in.audio.i_rate == i_nominal_rate )
705 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
706 msg_Warn( p_aout, "resampling stopped after %"PRIi64" usec "
707 "(drift: %"PRIi64")",
708 mdate() - p_input->i_resamp_start_date,
709 p_buffer->i_pts - start_date);
711 else if( abs( (int)(p_buffer->i_pts - start_date) ) <
712 abs( p_input->i_resamp_start_drift ) / 2 )
714 /* if we reduced the drift from half, then it is time to switch
715 * back the resampling direction. */
716 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
717 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
719 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
720 p_input->i_resamp_start_drift = 0;
722 else if( p_input->i_resamp_start_drift &&
723 ( abs( (int)(p_buffer->i_pts - start_date) ) >
724 abs( p_input->i_resamp_start_drift ) * 3 / 2 ) )
726 /* If the drift is increasing and not decreasing, than something
727 * is bad. We'd better stop the resampling right now. */
728 msg_Warn( p_aout, "timing screwed, stopping resampling" );
729 inputResamplingStop( p_input );
730 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
734 #ifndef AOUT_PROCESS_BEFORE_CHEKS
735 /* Actually run the resampler now. */
736 if ( p_input->i_nb_resamplers > 0 )
738 aout_FiltersPlay( p_input->pp_resamplers, p_input->i_nb_resamplers,
744 if( p_buffer->i_nb_samples <= 0 )
746 block_Release( p_buffer );
751 /* Adding the start date will be managed by aout_FifoPush(). */
752 p_buffer->i_pts = start_date;
754 aout_lock_input_fifos( p_aout );
755 aout_FifoPush( p_aout, &p_input->mixer.fifo, p_buffer );
756 aout_unlock_input_fifos( p_aout );
760 bool aout_InputIsEmpty( aout_instance_t * p_aout, aout_input_t * p_input )
762 aout_lock_input_fifos( p_aout );
763 bool is_empty = date_Get( &p_input->mixer.fifo.end_date ) <= mdate();
764 aout_unlock_input_fifos( p_aout );
768 /*****************************************************************************
770 *****************************************************************************/
772 static void inputFailure( aout_instance_t * p_aout, aout_input_t * p_input,
773 const char * psz_error_message )
776 msg_Err( p_aout, "%s", psz_error_message );
779 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
780 p_input->i_nb_filters );
781 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
782 p_input->i_nb_resamplers );
783 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
784 var_Destroy( p_aout, "visual" );
785 var_Destroy( p_aout, "equalizer" );
786 var_Destroy( p_aout, "audio-filter" );
787 var_Destroy( p_aout, "audio-visual" );
789 var_Destroy( p_aout, "audio-replay-gain-mode" );
790 var_Destroy( p_aout, "audio-replay-gain-default" );
791 var_Destroy( p_aout, "audio-replay-gain-preamp" );
792 var_Destroy( p_aout, "audio-replay-gain-peak-protection" );
795 p_input->b_error = 1;
798 static void inputDrop( aout_input_t *p_input, aout_buffer_t *p_buffer )
800 aout_BufferFree( p_buffer );
802 p_input->i_buffer_lost++;
805 static void inputResamplingStop( aout_input_t *p_input )
807 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
808 if( p_input->i_nb_resamplers != 0 )
810 p_input->pp_resamplers[0]->fmt_in.audio.i_rate =
811 ( p_input->pp_resamplers[0] == p_input->p_playback_rate_filter )
812 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / p_input->i_last_input_rate
813 : p_input->input.i_rate;
817 static vout_thread_t *RequestVout( void *p_private,
818 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
820 aout_instance_t *p_aout = p_private;
821 VLC_UNUSED(b_recycle);
822 vout_configuration_t cfg = {
829 return vout_Request( p_aout, &cfg );
832 vout_thread_t *aout_filter_RequestVout( filter_t *p_filter,
833 vout_thread_t *p_vout, video_format_t *p_fmt )
835 aout_input_t *p_input = p_filter->p_owner->p_input;
836 aout_request_vout_t *p_request = &p_input->request_vout;
838 /* XXX: this only works from audio input */
839 /* If you want to use visualization filters from another place, you will
840 * need to add a new pf_aout_request_vout callback or store a pointer
841 * to aout_request_vout_t inside filter_t (i.e. a level of indirection). */
843 return p_request->pf_request_vout( p_request->p_private,
844 p_vout, p_fmt, p_input->b_recycle_vout );
847 static int ChangeFiltersString( aout_instance_t * p_aout, const char* psz_variable,
848 const char *psz_name, bool b_add )
850 return aout_ChangeFilterString( VLC_OBJECT(p_aout), p_aout,
851 psz_variable, psz_name, b_add ) ? 1 : 0;
854 static int VisualizationCallback( vlc_object_t *p_this, char const *psz_cmd,
855 vlc_value_t oldval, vlc_value_t newval, void *p_data )
857 aout_instance_t *p_aout = (aout_instance_t *)p_this;
858 char *psz_mode = newval.psz_string;
859 (void)psz_cmd; (void)oldval; (void)p_data;
861 if( !psz_mode || !*psz_mode )
863 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
864 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
865 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
869 if( !strcmp( "goom", psz_mode ) )
871 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
872 ChangeFiltersString( p_aout, "audio-visual", "goom", true );
873 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
875 else if( !strcmp( "projectm", psz_mode ) )
877 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
878 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
879 ChangeFiltersString( p_aout, "audio-visual", "projectm", true );
883 var_Create( p_aout, "effect-list", VLC_VAR_STRING );
884 var_SetString( p_aout, "effect-list", psz_mode );
886 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
887 ChangeFiltersString( p_aout, "audio-visual", "visual", true );
888 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
893 AoutInputsMarkToRestart( p_aout );
898 static int EqualizerCallback( vlc_object_t *p_this, char const *psz_cmd,
899 vlc_value_t oldval, vlc_value_t newval, void *p_data )
901 aout_instance_t *p_aout = (aout_instance_t *)p_this;
902 char *psz_mode = newval.psz_string;
904 (void)psz_cmd; (void)oldval; (void)p_data;
906 if( !psz_mode || !*psz_mode )
908 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
913 var_Create( p_aout, "equalizer-preset", VLC_VAR_STRING );
914 var_SetString( p_aout, "equalizer-preset", psz_mode );
915 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
921 AoutInputsMarkToRestart( p_aout );
925 static int ReplayGainCallback( vlc_object_t *p_this, char const *psz_cmd,
926 vlc_value_t oldval, vlc_value_t newval, void *p_data )
928 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
929 VLC_UNUSED(newval); VLC_UNUSED(p_data);
930 aout_instance_t *p_aout = (aout_instance_t *)p_this;
933 aout_lock_mixer( p_aout );
934 for( i = 0; i < p_aout->i_nb_inputs; i++ )
935 ReplayGainSelect( p_aout, p_aout->pp_inputs[i] );
937 /* Restart the mixer (a trivial mixer may be in use) */
938 if( p_aout->p_mixer )
939 aout_MixerMultiplierSet( p_aout, p_aout->mixer_multiplier );
940 aout_unlock_mixer( p_aout );
945 static void ReplayGainSelect( aout_instance_t *p_aout, aout_input_t *p_input )
947 char *psz_replay_gain = var_GetNonEmptyString( p_aout,
948 "audio-replay-gain-mode" );
953 p_input->mixer.multiplier = 1.0;
955 if( !psz_replay_gain )
958 /* Find select mode */
959 if( !strcmp( psz_replay_gain, "track" ) )
960 i_mode = AUDIO_REPLAY_GAIN_TRACK;
961 else if( !strcmp( psz_replay_gain, "album" ) )
962 i_mode = AUDIO_REPLAY_GAIN_ALBUM;
964 i_mode = AUDIO_REPLAY_GAIN_MAX;
966 /* If the select mode is not available, prefer the other one */
968 if( i_use != AUDIO_REPLAY_GAIN_MAX && !p_input->replay_gain.pb_gain[i_use] )
970 for( i_use = 0; i_use < AUDIO_REPLAY_GAIN_MAX; i_use++ )
972 if( p_input->replay_gain.pb_gain[i_use] )
978 if( i_use != AUDIO_REPLAY_GAIN_MAX )
979 f_gain = p_input->replay_gain.pf_gain[i_use] + var_GetFloat( p_aout, "audio-replay-gain-preamp" );
980 else if( i_mode != AUDIO_REPLAY_GAIN_MAX )
981 f_gain = var_GetFloat( p_aout, "audio-replay-gain-default" );
984 p_input->mixer.multiplier = pow( 10.0, f_gain / 20.0 );
987 if( p_input->replay_gain.pb_peak[i_use] &&
988 var_GetBool( p_aout, "audio-replay-gain-peak-protection" ) &&
989 p_input->replay_gain.pf_peak[i_use] * p_input->mixer.multiplier > 1.0 )
991 p_input->mixer.multiplier = 1.0f / p_input->replay_gain.pf_peak[i_use];
994 free( psz_replay_gain );