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 */
45 #include <vlc_filter.h>
48 #include "aout_internal.h"
50 #define AOUT_ASSERT_MIXER_LOCKED vlc_assert_locked( &p_aout->mixer_lock )
51 #define AOUT_ASSERT_INPUT_LOCKED vlc_assert_locked( &p_input->lock )
53 static void inputFailure( aout_instance_t *, aout_input_t *, const char * );
54 static void inputDrop( aout_input_t *, aout_buffer_t * );
55 static void inputResamplingStop( aout_input_t *p_input );
57 static int VisualizationCallback( vlc_object_t *, char const *,
58 vlc_value_t, vlc_value_t, void * );
59 static int EqualizerCallback( vlc_object_t *, char const *,
60 vlc_value_t, vlc_value_t, void * );
61 static int ReplayGainCallback( vlc_object_t *, char const *,
62 vlc_value_t, vlc_value_t, void * );
63 static void ReplayGainSelect( aout_instance_t *, aout_input_t * );
65 static vout_thread_t *RequestVout( void *,
66 vout_thread_t *, video_format_t *, bool );
68 /*****************************************************************************
69 * aout_InputNew : allocate a new input and rework the filter pipeline
70 *****************************************************************************/
71 int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t *p_request_vout )
73 audio_sample_format_t chain_input_format;
74 audio_sample_format_t chain_output_format;
75 vlc_value_t val, text;
76 char *psz_filters, *psz_visual, *psz_scaletempo;
79 aout_FormatPrint( p_aout, "input", &p_input->input );
81 p_input->i_nb_resamplers = p_input->i_nb_filters = 0;
84 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
85 p_input->mixer.begin = NULL;
90 p_input->request_vout = *p_request_vout;
94 p_input->request_vout.pf_request_vout = RequestVout;
95 p_input->request_vout.p_private = p_aout;
98 /* Prepare format structure */
99 chain_input_format = p_input->input;
100 chain_output_format = p_aout->mixer_format;
101 chain_output_format.i_rate = p_input->input.i_rate;
102 aout_FormatPrepare( &chain_output_format );
104 /* Now add user filters */
105 if( var_Type( p_aout, "visual" ) == 0 )
107 var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
108 text.psz_string = _("Visualizations");
109 var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
110 val.psz_string = (char*)""; text.psz_string = _("Disable");
111 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
112 val.psz_string = (char*)"spectrometer"; text.psz_string = _("Spectrometer");
113 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
114 val.psz_string = (char*)"scope"; text.psz_string = _("Scope");
115 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
116 val.psz_string = (char*)"spectrum"; text.psz_string = _("Spectrum");
117 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
118 val.psz_string = (char*)"vuMeter"; text.psz_string = _("Vu meter");
119 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
121 /* Look for goom plugin */
122 if( module_exists( "goom" ) )
124 val.psz_string = (char*)"goom"; text.psz_string = (char*)"Goom";
125 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
128 /* Look for libprojectM plugin */
129 if( module_exists( "projectm" ) )
131 val.psz_string = (char*)"projectm"; text.psz_string = (char*)"projectM";
132 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
135 if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
137 var_SetString( p_aout, "visual", val.psz_string );
138 free( val.psz_string );
140 var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
143 if( var_Type( p_aout, "equalizer" ) == 0 )
145 module_config_t *p_config;
148 p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
149 if( p_config && p_config->i_list )
151 var_Create( p_aout, "equalizer",
152 VLC_VAR_STRING | VLC_VAR_HASCHOICE );
153 text.psz_string = _("Equalizer");
154 var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
156 val.psz_string = (char*)""; text.psz_string = _("Disable");
157 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
159 for( i = 0; i < p_config->i_list; i++ )
161 val.psz_string = (char *)p_config->ppsz_list[i];
162 text.psz_string = (char *)p_config->ppsz_list_text[i];
163 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
167 var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
171 if( var_Type( p_aout, "audio-filter" ) == 0 )
173 var_Create( p_aout, "audio-filter",
174 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
175 text.psz_string = _("Audio filters");
176 var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
178 if( var_Type( p_aout, "audio-visual" ) == 0 )
180 var_Create( p_aout, "audio-visual",
181 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
182 text.psz_string = _("Audio visualizations");
183 var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
186 if( var_Type( p_aout, "audio-replay-gain-mode" ) == 0 )
188 module_config_t *p_config;
191 p_config = config_FindConfig( VLC_OBJECT(p_aout), "audio-replay-gain-mode" );
192 if( p_config && p_config->i_list )
194 var_Create( p_aout, "audio-replay-gain-mode",
195 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
197 text.psz_string = _("Replay gain");
198 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL );
200 for( i = 0; i < p_config->i_list; i++ )
202 val.psz_string = (char *)p_config->ppsz_list[i];
203 text.psz_string = (char *)p_config->ppsz_list_text[i];
204 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
208 var_AddCallback( p_aout, "audio-replay-gain-mode", ReplayGainCallback, NULL );
211 if( var_Type( p_aout, "audio-replay-gain-preamp" ) == 0 )
213 var_Create( p_aout, "audio-replay-gain-preamp",
214 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
216 if( var_Type( p_aout, "audio-replay-gain-default" ) == 0 )
218 var_Create( p_aout, "audio-replay-gain-default",
219 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
221 if( var_Type( p_aout, "audio-replay-gain-peak-protection" ) == 0 )
223 var_Create( p_aout, "audio-replay-gain-peak-protection",
224 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
226 if( var_Type( p_aout, "audio-time-stretch" ) == 0 )
228 var_Create( p_aout, "audio-time-stretch",
229 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
232 psz_filters = var_GetString( p_aout, "audio-filter" );
233 psz_visual = var_GetString( p_aout, "audio-visual");
234 psz_scaletempo = var_GetBool( p_aout, "audio-time-stretch" ) ? strdup( "scaletempo" ) : NULL;
236 p_input->b_recycle_vout = psz_visual && *psz_visual;
238 /* parse user filter lists */
239 char *const ppsz_array[] = { psz_scaletempo, psz_filters, psz_visual };
240 p_input->p_playback_rate_filter = NULL;
242 for( i_visual = 0; i_visual < 3 && !AOUT_FMT_NON_LINEAR(&chain_output_format); i_visual++ )
244 char *psz_next = NULL;
245 char *psz_parser = ppsz_array[i_visual];
247 if( psz_parser == NULL || !*psz_parser )
250 while( psz_parser && *psz_parser )
252 filter_t * p_filter = NULL;
254 if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
256 msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
260 while( *psz_parser == ' ' && *psz_parser == ':' )
264 if( ( psz_next = strchr( psz_parser , ':' ) ) )
268 if( *psz_parser =='\0' )
273 /* Create a VLC object */
274 static const char typename[] = "audio filter";
275 p_filter = vlc_custom_create( p_aout, sizeof(*p_filter),
276 VLC_OBJECT_GENERIC, typename );
277 if( p_filter == NULL )
279 msg_Err( p_aout, "cannot add user filter %s (skipped)",
281 psz_parser = psz_next;
285 vlc_object_attach( p_filter , p_aout );
287 p_filter->p_owner = malloc( sizeof(*p_filter->p_owner) );
288 p_filter->p_owner->p_aout = p_aout;
289 p_filter->p_owner->p_input = p_input;
292 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
293 sizeof(audio_sample_format_t) );
294 p_filter->fmt_in.i_codec = chain_output_format.i_format;
295 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
296 sizeof(audio_sample_format_t) );
297 p_filter->fmt_out.i_codec = chain_output_format.i_format;
298 p_filter->pf_audio_buffer_new = aout_FilterBufferNew;
300 /* try to find the requested filter */
301 if( i_visual == 2 ) /* this can only be a visualization module */
303 p_filter->p_module = module_need( p_filter, "visualization2",
306 else /* this can be a audio filter module as well as a visualization module */
308 p_filter->p_module = module_need( p_filter, "audio filter2",
311 if ( p_filter->p_module == NULL )
313 /* if the filter requested a special format, retry */
314 if ( !( AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio,
315 &chain_input_format )
316 && AOUT_FMTS_IDENTICAL( &p_filter->fmt_out.audio,
317 &chain_output_format ) ) )
319 aout_FormatPrepare( &p_filter->fmt_in.audio );
320 aout_FormatPrepare( &p_filter->fmt_out.audio );
321 p_filter->p_module = module_need( p_filter,
325 /* try visual filters */
328 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
329 sizeof(audio_sample_format_t) );
330 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
331 sizeof(audio_sample_format_t) );
332 p_filter->p_module = module_need( p_filter,
340 if ( p_filter->p_module == NULL )
342 msg_Err( p_aout, "cannot add user filter %s (skipped)",
345 free( p_filter->p_owner );
346 vlc_object_detach( p_filter );
347 vlc_object_release( p_filter );
349 psz_parser = psz_next;
353 /* complete the filter chain if necessary */
354 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format,
355 &p_filter->fmt_in.audio ) )
357 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
358 &p_input->i_nb_filters,
360 &p_filter->fmt_in.audio ) < 0 )
362 msg_Err( p_aout, "cannot add user filter %s (skipped)",
365 module_unneed( p_filter, p_filter->p_module );
366 free( p_filter->p_owner );
367 vlc_object_detach( p_filter );
368 vlc_object_release( p_filter );
370 psz_parser = psz_next;
376 p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
377 memcpy( &chain_input_format, &p_filter->fmt_out.audio,
378 sizeof( audio_sample_format_t ) );
380 if( i_visual == 0 ) /* scaletempo */
381 p_input->p_playback_rate_filter = p_filter;
383 /* next filter if any */
384 psz_parser = psz_next;
389 free( psz_scaletempo );
391 /* complete the filter chain if necessary */
392 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
394 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
395 &p_input->i_nb_filters,
397 &chain_output_format ) < 0 )
399 inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
404 /* Prepare hints for the buffer allocator. */
405 p_input->input_alloc.b_alloc = true;
406 p_input->input_alloc.i_bytes_per_sec = -1;
408 /* Create resamplers. */
409 if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer_format ) )
411 chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
412 p_aout->mixer_format.i_rate)
413 * (100 + AOUT_MAX_RESAMPLING)) / 100;
414 if ( chain_output_format.i_rate == p_aout->mixer_format.i_rate )
416 /* Just in case... */
417 chain_output_format.i_rate++;
419 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
420 &p_input->i_nb_resamplers,
421 &chain_output_format,
422 &p_aout->mixer_format ) < 0 )
424 inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
428 aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
429 p_input->i_nb_resamplers,
430 &p_input->input_alloc );
431 p_input->input_alloc.b_alloc = true;
433 /* Setup the initial rate of the resampler */
434 p_input->pp_resamplers[0]->fmt_in.audio.i_rate = p_input->input.i_rate;
436 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
438 if( ! p_input->p_playback_rate_filter && p_input->i_nb_resamplers > 0 )
440 p_input->p_playback_rate_filter = p_input->pp_resamplers[0];
443 aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
444 p_input->i_nb_filters,
445 &p_input->input_alloc );
446 p_input->input_alloc.b_alloc = true;
448 /* i_bytes_per_sec is still == -1 if no filters */
449 p_input->input_alloc.i_bytes_per_sec = __MAX(
450 p_input->input_alloc.i_bytes_per_sec,
451 (int)(p_input->input.i_bytes_per_frame
452 * p_input->input.i_rate
453 / p_input->input.i_frame_length) );
455 ReplayGainSelect( p_aout, p_input );
458 p_input->b_error = false;
459 p_input->b_restart = false;
460 p_input->i_last_input_rate = INPUT_RATE_DEFAULT;
465 /*****************************************************************************
466 * aout_InputDelete : delete an input
467 *****************************************************************************
468 * This function must be entered with the mixer lock.
469 *****************************************************************************/
470 int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input )
472 AOUT_ASSERT_MIXER_LOCKED;
473 if ( p_input->b_error )
476 /* XXX We need to update b_recycle_vout before calling aout_FiltersDestroyPipeline.
477 * FIXME They can be a race condition if audio-visual is updated between
478 * aout_InputDelete and aout_InputNew.
480 char *psz_visual = var_GetString( p_aout, "audio-visual");
481 p_input->b_recycle_vout = psz_visual && *psz_visual;
484 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
485 p_input->i_nb_filters );
486 p_input->i_nb_filters = 0;
487 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
488 p_input->i_nb_resamplers );
489 p_input->i_nb_resamplers = 0;
490 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
495 /*****************************************************************************
496 * aout_InputPlay : play a buffer
497 *****************************************************************************
498 * This function must be entered with the input lock.
499 *****************************************************************************/
500 /* XXX Do not activate it !! */
501 //#define AOUT_PROCESS_BEFORE_CHEKS
502 int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
503 aout_buffer_t * p_buffer, int i_input_rate )
506 AOUT_ASSERT_INPUT_LOCKED;
508 if( p_input->b_restart )
511 uint8_t *p_first_byte_to_mix;
513 mtime_t i_pause_date;
515 aout_lock_mixer( p_aout );
516 aout_lock_input_fifos( p_aout );
518 /* A little trick to avoid loosing our input fifo and properties */
520 p_first_byte_to_mix = p_input->mixer.begin;
521 fifo = p_input->mixer.fifo;
522 b_paused = p_input->b_paused;
523 i_pause_date = p_input->i_pause_date;
525 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
527 aout_InputDelete( p_aout, p_input );
529 aout_InputNew( p_aout, p_input, &p_input->request_vout );
530 p_input->mixer.begin = p_first_byte_to_mix;
531 p_input->mixer.fifo = fifo;
532 p_input->b_paused = b_paused;
533 p_input->i_pause_date = i_pause_date;
535 aout_unlock_input_fifos( p_aout );
536 aout_unlock_mixer( p_aout );
539 if( i_input_rate != INPUT_RATE_DEFAULT && p_input->p_playback_rate_filter == NULL )
541 inputDrop( p_input, p_buffer );
545 #ifdef AOUT_PROCESS_BEFORE_CHEKS
546 /* Run pre-filters. */
547 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,
559 if( p_buffer->i_nb_samples <= 0 )
561 aout_BufferFree( p_buffer );
566 /* Handle input rate change, but keep drift correction */
567 if( i_input_rate != p_input->i_last_input_rate )
569 unsigned int * const pi_rate = &p_input->p_playback_rate_filter->fmt_in.audio.i_rate;
570 #define F(r,ir) ( INPUT_RATE_DEFAULT * (r) / (ir) )
571 const int i_delta = *pi_rate - F(p_input->input.i_rate,p_input->i_last_input_rate);
572 *pi_rate = F(p_input->input.i_rate + i_delta, i_input_rate);
574 p_input->i_last_input_rate = i_input_rate;
577 /* We don't care if someone changes the start date behind our back after
578 * this. We'll deal with that when pushing the buffer, and compensate
579 * with the next incoming buffer. */
580 aout_lock_input_fifos( p_aout );
581 start_date = aout_FifoNextStart( p_aout, &p_input->mixer.fifo );
582 aout_unlock_input_fifos( p_aout );
584 if ( start_date != 0 && start_date < mdate() )
586 /* The decoder is _very_ late. This can only happen if the user
587 * pauses the stream (or if the decoder is buggy, which cannot
589 msg_Warn( p_aout, "computed PTS is out of range (%"PRId64"), "
590 "clearing out", mdate() - start_date );
591 aout_lock_input_fifos( p_aout );
592 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
593 p_input->mixer.begin = NULL;
594 aout_unlock_input_fifos( p_aout );
595 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
596 msg_Warn( p_aout, "timing screwed, stopping resampling" );
597 inputResamplingStop( p_input );
598 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
602 if ( p_buffer->i_pts < mdate() + AOUT_MIN_PREPARE_TIME )
604 /* The decoder gives us f*cked up PTS. It's its business, but we
605 * can't present it anyway, so drop the buffer. */
606 msg_Warn( p_aout, "PTS is out of range (%"PRId64"), dropping buffer",
607 mdate() - p_buffer->i_pts );
609 inputDrop( p_input, p_buffer );
610 inputResamplingStop( p_input );
614 /* If the audio drift is too big then it's not worth trying to resample
616 mtime_t i_pts_tolerance = 3 * AOUT_PTS_TOLERANCE * i_input_rate / INPUT_RATE_DEFAULT;
617 if ( start_date != 0 &&
618 ( start_date < p_buffer->i_pts - i_pts_tolerance ) )
620 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), clearing out",
621 start_date - p_buffer->i_pts );
622 aout_lock_input_fifos( p_aout );
623 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
624 p_input->mixer.begin = NULL;
625 aout_unlock_input_fifos( p_aout );
626 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
627 msg_Warn( p_aout, "timing screwed, stopping resampling" );
628 inputResamplingStop( p_input );
629 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
632 else if ( start_date != 0 &&
633 ( start_date > p_buffer->i_pts + i_pts_tolerance) )
635 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), dropping buffer",
636 start_date - p_buffer->i_pts );
637 inputDrop( p_input, p_buffer );
641 if ( start_date == 0 ) start_date = p_buffer->i_pts;
643 #ifndef AOUT_PROCESS_BEFORE_CHEKS
644 /* Run pre-filters. */
645 aout_FiltersPlay( p_input->pp_filters, p_input->i_nb_filters, &p_buffer );
648 /* Run the resampler if needed.
649 * We first need to calculate the output rate of this resampler. */
650 if ( ( p_input->i_resampling_type == AOUT_RESAMPLING_NONE ) &&
651 ( start_date < p_buffer->i_pts - AOUT_PTS_TOLERANCE
652 || start_date > p_buffer->i_pts + AOUT_PTS_TOLERANCE ) &&
653 p_input->i_nb_resamplers > 0 )
655 /* Can happen in several circumstances :
656 * 1. A problem at the input (clock drift)
657 * 2. A small pause triggered by the user
658 * 3. Some delay in the output stage, causing a loss of lip
660 * Solution : resample the buffer to avoid a scratch.
662 mtime_t drift = p_buffer->i_pts - start_date;
664 p_input->i_resamp_start_date = mdate();
665 p_input->i_resamp_start_drift = (int)drift;
668 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
670 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
672 msg_Warn( p_aout, "buffer is %"PRId64" %s, triggering %ssampling",
673 drift > 0 ? drift : -drift,
674 drift > 0 ? "in advance" : "late",
675 drift > 0 ? "down" : "up");
678 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
680 /* Resampling has been triggered previously (because of dates
681 * mismatch). We want the resampling to happen progressively so
682 * it isn't too audible to the listener. */
684 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
686 p_input->pp_resamplers[0]->fmt_in.audio.i_rate += 2; /* Hz */
690 p_input->pp_resamplers[0]->fmt_in.audio.i_rate -= 2; /* Hz */
693 /* Check if everything is back to normal, in which case we can stop the
695 unsigned int i_nominal_rate =
696 (p_input->pp_resamplers[0] == p_input->p_playback_rate_filter)
697 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / i_input_rate
698 : p_input->input.i_rate;
699 if( p_input->pp_resamplers[0]->fmt_in.audio.i_rate == i_nominal_rate )
701 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
702 msg_Warn( p_aout, "resampling stopped after %"PRIi64" usec "
703 "(drift: %"PRIi64")",
704 mdate() - p_input->i_resamp_start_date,
705 p_buffer->i_pts - start_date);
707 else if( abs( (int)(p_buffer->i_pts - start_date) ) <
708 abs( p_input->i_resamp_start_drift ) / 2 )
710 /* if we reduced the drift from half, then it is time to switch
711 * back the resampling direction. */
712 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
713 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
715 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
716 p_input->i_resamp_start_drift = 0;
718 else if( p_input->i_resamp_start_drift &&
719 ( abs( (int)(p_buffer->i_pts - start_date) ) >
720 abs( p_input->i_resamp_start_drift ) * 3 / 2 ) )
722 /* If the drift is increasing and not decreasing, than something
723 * is bad. We'd better stop the resampling right now. */
724 msg_Warn( p_aout, "timing screwed, stopping resampling" );
725 inputResamplingStop( p_input );
726 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
730 #ifndef AOUT_PROCESS_BEFORE_CHEKS
731 /* Actually run the resampler now. */
732 if ( p_input->i_nb_resamplers > 0 )
734 aout_FiltersPlay( p_input->pp_resamplers, p_input->i_nb_resamplers,
738 if( p_buffer->i_nb_samples <= 0 )
740 aout_BufferFree( p_buffer );
745 /* Adding the start date will be managed by aout_FifoPush(). */
746 p_buffer->i_pts = start_date;
748 aout_lock_input_fifos( p_aout );
749 aout_FifoPush( p_aout, &p_input->mixer.fifo, p_buffer );
750 aout_unlock_input_fifos( p_aout );
754 /*****************************************************************************
756 *****************************************************************************/
758 static void inputFailure( aout_instance_t * p_aout, aout_input_t * p_input,
759 const char * psz_error_message )
762 msg_Err( p_aout, "%s", psz_error_message );
765 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
766 p_input->i_nb_filters );
767 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
768 p_input->i_nb_resamplers );
769 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
770 var_Destroy( p_aout, "visual" );
771 var_Destroy( p_aout, "equalizer" );
772 var_Destroy( p_aout, "audio-filter" );
773 var_Destroy( p_aout, "audio-visual" );
775 var_Destroy( p_aout, "audio-replay-gain-mode" );
776 var_Destroy( p_aout, "audio-replay-gain-default" );
777 var_Destroy( p_aout, "audio-replay-gain-preamp" );
778 var_Destroy( p_aout, "audio-replay-gain-peak-protection" );
781 p_input->b_error = 1;
784 static void inputDrop( aout_input_t *p_input, aout_buffer_t *p_buffer )
786 aout_BufferFree( p_buffer );
788 p_input->i_buffer_lost++;
791 static void inputResamplingStop( aout_input_t *p_input )
793 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
794 if( p_input->i_nb_resamplers != 0 )
796 p_input->pp_resamplers[0]->fmt_in.audio.i_rate =
797 ( p_input->pp_resamplers[0] == p_input->p_playback_rate_filter )
798 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / p_input->i_last_input_rate
799 : p_input->input.i_rate;
803 static vout_thread_t *RequestVout( void *p_private,
804 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
806 aout_instance_t *p_aout = p_private;
807 VLC_UNUSED(b_recycle);
808 return vout_Request( p_aout, p_vout, p_fmt );
811 vout_thread_t *aout_filter_RequestVout( filter_t *p_filter,
812 vout_thread_t *p_vout, video_format_t *p_fmt )
814 aout_input_t *p_input = p_filter->p_owner->p_input;
815 aout_request_vout_t *p_request = &p_input->request_vout;
817 /* XXX: this only works from audio input */
818 /* If you want to use visualization filters from another place, you will
819 * need to add a new pf_aout_request_vout callback or store a pointer
820 * to aout_request_vout_t inside filter_t (i.e. a level of indirection). */
822 return p_request->pf_request_vout( p_request->p_private,
823 p_vout, p_fmt, p_input->b_recycle_vout );
826 static int ChangeFiltersString( aout_instance_t * p_aout, const char* psz_variable,
827 const char *psz_name, bool b_add )
829 return AoutChangeFilterString( VLC_OBJECT(p_aout), p_aout,
830 psz_variable, psz_name, b_add ) ? 1 : 0;
833 static int VisualizationCallback( vlc_object_t *p_this, char const *psz_cmd,
834 vlc_value_t oldval, vlc_value_t newval, void *p_data )
836 aout_instance_t *p_aout = (aout_instance_t *)p_this;
837 char *psz_mode = newval.psz_string;
838 (void)psz_cmd; (void)oldval; (void)p_data;
840 if( !psz_mode || !*psz_mode )
842 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
843 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
844 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
848 if( !strcmp( "goom", psz_mode ) )
850 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
851 ChangeFiltersString( p_aout, "audio-visual", "goom", true );
852 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
854 else if( !strcmp( "projectm", psz_mode ) )
856 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
857 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
858 ChangeFiltersString( p_aout, "audio-visual", "projectm", true );
862 var_Create( p_aout, "effect-list", VLC_VAR_STRING );
863 var_SetString( p_aout, "effect-list", psz_mode );
865 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
866 ChangeFiltersString( p_aout, "audio-visual", "visual", true );
867 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
872 AoutInputsMarkToRestart( p_aout );
877 static int EqualizerCallback( vlc_object_t *p_this, char const *psz_cmd,
878 vlc_value_t oldval, vlc_value_t newval, void *p_data )
880 aout_instance_t *p_aout = (aout_instance_t *)p_this;
881 char *psz_mode = newval.psz_string;
883 (void)psz_cmd; (void)oldval; (void)p_data;
885 if( !psz_mode || !*psz_mode )
887 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
892 var_Create( p_aout, "equalizer-preset", VLC_VAR_STRING );
893 var_SetString( p_aout, "equalizer-preset", psz_mode );
894 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
900 AoutInputsMarkToRestart( p_aout );
904 static int ReplayGainCallback( vlc_object_t *p_this, char const *psz_cmd,
905 vlc_value_t oldval, vlc_value_t newval, void *p_data )
907 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
908 VLC_UNUSED(newval); VLC_UNUSED(p_data);
909 aout_instance_t *p_aout = (aout_instance_t *)p_this;
912 aout_lock_mixer( p_aout );
913 for( i = 0; i < p_aout->i_nb_inputs; i++ )
914 ReplayGainSelect( p_aout, p_aout->pp_inputs[i] );
916 /* Restart the mixer (a trivial mixer may be in use) */
917 if( p_aout->p_mixer )
918 aout_MixerMultiplierSet( p_aout, p_aout->mixer_multiplier );
919 aout_unlock_mixer( p_aout );
924 static void ReplayGainSelect( aout_instance_t *p_aout, aout_input_t *p_input )
926 char *psz_replay_gain = var_GetNonEmptyString( p_aout,
927 "audio-replay-gain-mode" );
932 p_input->mixer.multiplier = 1.0;
934 if( !psz_replay_gain )
937 /* Find select mode */
938 if( !strcmp( psz_replay_gain, "track" ) )
939 i_mode = AUDIO_REPLAY_GAIN_TRACK;
940 else if( !strcmp( psz_replay_gain, "album" ) )
941 i_mode = AUDIO_REPLAY_GAIN_ALBUM;
943 i_mode = AUDIO_REPLAY_GAIN_MAX;
945 /* If the select mode is not available, prefer the other one */
947 if( i_use != AUDIO_REPLAY_GAIN_MAX && !p_input->replay_gain.pb_gain[i_use] )
949 for( i_use = 0; i_use < AUDIO_REPLAY_GAIN_MAX; i_use++ )
951 if( p_input->replay_gain.pb_gain[i_use] )
957 if( i_use != AUDIO_REPLAY_GAIN_MAX )
958 f_gain = p_input->replay_gain.pf_gain[i_use] + var_GetFloat( p_aout, "audio-replay-gain-preamp" );
959 else if( i_mode != AUDIO_REPLAY_GAIN_MAX )
960 f_gain = var_GetFloat( p_aout, "audio-replay-gain-default" );
963 p_input->mixer.multiplier = pow( 10.0, f_gain / 20.0 );
966 if( p_input->replay_gain.pb_peak[i_use] &&
967 var_GetBool( p_aout, "audio-replay-gain-peak-protection" ) &&
968 p_input->replay_gain.pf_peak[i_use] * p_input->mixer.multiplier > 1.0 )
970 p_input->mixer.multiplier = 1.0f / p_input->replay_gain.pf_peak[i_use];
973 free( psz_replay_gain );