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 */
47 #include "aout_internal.h"
49 #define AOUT_ASSERT_MIXER_LOCKED vlc_assert_locked( &p_aout->mixer_lock )
50 #define AOUT_ASSERT_INPUT_LOCKED vlc_assert_locked( &p_input->lock )
52 static void inputFailure( aout_instance_t *, aout_input_t *, const char * );
53 static void inputDrop( aout_input_t *, aout_buffer_t * );
54 static void inputResamplingStop( aout_input_t *p_input );
56 static int VisualizationCallback( vlc_object_t *, char const *,
57 vlc_value_t, vlc_value_t, void * );
58 static int EqualizerCallback( vlc_object_t *, char const *,
59 vlc_value_t, vlc_value_t, void * );
60 static int ReplayGainCallback( vlc_object_t *, char const *,
61 vlc_value_t, vlc_value_t, void * );
62 static void ReplayGainSelect( aout_instance_t *, aout_input_t * );
64 static vout_thread_t *RequestVout( void *,
65 vout_thread_t *, video_format_t *, bool );
67 /*****************************************************************************
68 * aout_InputNew : allocate a new input and rework the filter pipeline
69 *****************************************************************************/
70 int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t *p_request_vout )
72 audio_sample_format_t chain_input_format;
73 audio_sample_format_t chain_output_format;
74 vlc_value_t val, text;
75 char *psz_filters, *psz_visual, *psz_scaletempo;
78 aout_FormatPrint( p_aout, "input", &p_input->input );
80 p_input->i_nb_resamplers = p_input->i_nb_filters = 0;
83 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
84 p_input->mixer.begin = NULL;
89 p_input->request_vout = *p_request_vout;
93 p_input->request_vout.pf_request_vout = RequestVout;
94 p_input->request_vout.p_private = p_aout;
97 /* Prepare format structure */
98 chain_input_format = p_input->input;
99 chain_output_format = p_aout->mixer_format;
100 chain_output_format.i_rate = p_input->input.i_rate;
101 aout_FormatPrepare( &chain_output_format );
103 /* Now add user filters */
104 if( var_Type( p_aout, "visual" ) == 0 )
106 var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
107 text.psz_string = _("Visualizations");
108 var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
109 val.psz_string = (char*)""; text.psz_string = _("Disable");
110 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
111 val.psz_string = (char*)"spectrometer"; text.psz_string = _("Spectrometer");
112 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
113 val.psz_string = (char*)"scope"; text.psz_string = _("Scope");
114 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
115 val.psz_string = (char*)"spectrum"; text.psz_string = _("Spectrum");
116 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
117 val.psz_string = (char*)"vuMeter"; text.psz_string = _("Vu meter");
118 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
120 /* Look for goom plugin */
121 if( module_exists( "goom" ) )
123 val.psz_string = (char*)"goom"; text.psz_string = (char*)"Goom";
124 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
127 /* Look for libprojectM plugin */
128 if( module_exists( "projectm" ) )
130 val.psz_string = (char*)"projectm"; text.psz_string = (char*)"projectM";
131 var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
134 if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
136 var_SetString( p_aout, "visual", val.psz_string );
137 free( val.psz_string );
139 var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
142 if( var_Type( p_aout, "equalizer" ) == 0 )
144 module_config_t *p_config;
147 p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
148 if( p_config && p_config->i_list )
150 var_Create( p_aout, "equalizer",
151 VLC_VAR_STRING | VLC_VAR_HASCHOICE );
152 text.psz_string = _("Equalizer");
153 var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
155 val.psz_string = (char*)""; text.psz_string = _("Disable");
156 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
158 for( i = 0; i < p_config->i_list; i++ )
160 val.psz_string = (char *)p_config->ppsz_list[i];
161 text.psz_string = (char *)p_config->ppsz_list_text[i];
162 var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
166 var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
170 if( var_Type( p_aout, "audio-filter" ) == 0 )
172 var_Create( p_aout, "audio-filter",
173 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
174 text.psz_string = _("Audio filters");
175 var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
177 if( var_Type( p_aout, "audio-visual" ) == 0 )
179 var_Create( p_aout, "audio-visual",
180 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
181 text.psz_string = _("Audio visualizations");
182 var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
185 if( var_Type( p_aout, "audio-replay-gain-mode" ) == 0 )
187 module_config_t *p_config;
190 p_config = config_FindConfig( VLC_OBJECT(p_aout), "audio-replay-gain-mode" );
191 if( p_config && p_config->i_list )
193 var_Create( p_aout, "audio-replay-gain-mode",
194 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
196 text.psz_string = _("Replay gain");
197 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL );
199 for( i = 0; i < p_config->i_list; i++ )
201 val.psz_string = (char *)p_config->ppsz_list[i];
202 text.psz_string = (char *)p_config->ppsz_list_text[i];
203 var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
207 var_AddCallback( p_aout, "audio-replay-gain-mode", ReplayGainCallback, NULL );
210 if( var_Type( p_aout, "audio-replay-gain-preamp" ) == 0 )
212 var_Create( p_aout, "audio-replay-gain-preamp",
213 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
215 if( var_Type( p_aout, "audio-replay-gain-default" ) == 0 )
217 var_Create( p_aout, "audio-replay-gain-default",
218 VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
220 if( var_Type( p_aout, "audio-replay-gain-peak-protection" ) == 0 )
222 var_Create( p_aout, "audio-replay-gain-peak-protection",
223 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
225 if( var_Type( p_aout, "audio-time-stretch" ) == 0 )
227 var_Create( p_aout, "audio-time-stretch",
228 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
231 psz_filters = var_GetString( p_aout, "audio-filter" );
232 psz_visual = var_GetString( p_aout, "audio-visual");
233 psz_scaletempo = var_GetBool( p_aout, "audio-time-stretch" ) ? strdup( "scaletempo" ) : NULL;
235 p_input->b_recycle_vout = psz_visual && *psz_visual;
237 /* parse user filter lists */
238 char *const ppsz_array[] = { psz_scaletempo, psz_filters, psz_visual };
239 p_input->p_playback_rate_filter = NULL;
241 for( i_visual = 0; i_visual < 3 && !AOUT_FMT_NON_LINEAR(&chain_output_format); i_visual++ )
243 char *psz_next = NULL;
244 char *psz_parser = ppsz_array[i_visual];
246 if( psz_parser == NULL || !*psz_parser )
249 while( psz_parser && *psz_parser )
251 aout_filter_t * p_filter = NULL;
253 if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
255 msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
259 while( *psz_parser == ' ' && *psz_parser == ':' )
263 if( ( psz_next = strchr( psz_parser , ':' ) ) )
267 if( *psz_parser =='\0' )
272 /* Create a VLC object */
273 static const char typename[] = "audio filter";
274 p_filter = vlc_custom_create( p_aout, sizeof(*p_filter),
275 VLC_OBJECT_GENERIC, typename );
276 if( p_filter == NULL )
278 msg_Err( p_aout, "cannot add user filter %s (skipped)",
280 psz_parser = psz_next;
284 vlc_object_attach( p_filter , p_aout );
286 p_filter->p_owner = malloc( sizeof(*p_filter->p_owner) );
287 p_filter->p_owner->p_aout = p_aout;
288 p_filter->p_owner->p_input = p_input;
291 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
292 sizeof(audio_sample_format_t) );
293 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
294 sizeof(audio_sample_format_t) );
297 /* try to find the requested filter */
298 if( i_visual == 2 ) /* this can only be a visualization module */
300 p_filter->p_module = module_need( p_filter, "visualization",
303 else /* this can be a audio filter module as well as a visualization module */
305 p_filter->p_module = module_need( p_filter, "audio filter",
308 if ( p_filter->p_module == NULL )
310 /* if the filter requested a special format, retry */
311 if ( !( AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio,
312 &chain_input_format )
313 && AOUT_FMTS_IDENTICAL( &p_filter->fmt_out.audio,
314 &chain_output_format ) ) )
316 aout_FormatPrepare( &p_filter->fmt_in.audio );
317 aout_FormatPrepare( &p_filter->fmt_out.audio );
318 p_filter->p_module = module_need( p_filter,
322 /* try visual filters */
325 memcpy( &p_filter->fmt_in.audio, &chain_output_format,
326 sizeof(audio_sample_format_t) );
327 memcpy( &p_filter->fmt_out.audio, &chain_output_format,
328 sizeof(audio_sample_format_t) );
329 p_filter->p_module = module_need( p_filter,
337 if ( p_filter->p_module == NULL )
339 msg_Err( p_aout, "cannot add user filter %s (skipped)",
342 free( p_filter->p_owner );
343 vlc_object_detach( p_filter );
344 vlc_object_release( p_filter );
346 psz_parser = psz_next;
350 /* complete the filter chain if necessary */
351 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format,
352 &p_filter->fmt_in.audio ) )
354 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
355 &p_input->i_nb_filters,
357 &p_filter->fmt_in.audio ) < 0 )
359 msg_Err( p_aout, "cannot add user filter %s (skipped)",
362 module_unneed( p_filter, p_filter->p_module );
363 free( p_filter->p_owner );
364 vlc_object_detach( p_filter );
365 vlc_object_release( p_filter );
367 psz_parser = psz_next;
373 p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
374 memcpy( &chain_input_format, &p_filter->fmt_out.audio,
375 sizeof( audio_sample_format_t ) );
377 if( i_visual == 0 ) /* scaletempo */
378 p_input->p_playback_rate_filter = p_filter;
380 /* next filter if any */
381 psz_parser = psz_next;
386 free( psz_scaletempo );
388 /* complete the filter chain if necessary */
389 if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
391 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
392 &p_input->i_nb_filters,
394 &chain_output_format ) < 0 )
396 inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
401 /* Prepare hints for the buffer allocator. */
402 p_input->input_alloc.b_alloc = true;
403 p_input->input_alloc.i_bytes_per_sec = -1;
405 /* Create resamplers. */
406 if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer_format ) )
408 chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
409 p_aout->mixer_format.i_rate)
410 * (100 + AOUT_MAX_RESAMPLING)) / 100;
411 if ( chain_output_format.i_rate == p_aout->mixer_format.i_rate )
413 /* Just in case... */
414 chain_output_format.i_rate++;
416 if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
417 &p_input->i_nb_resamplers,
418 &chain_output_format,
419 &p_aout->mixer_format ) < 0 )
421 inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
425 aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
426 p_input->i_nb_resamplers,
427 &p_input->input_alloc );
428 p_input->input_alloc.b_alloc = true;
430 /* Setup the initial rate of the resampler */
431 p_input->pp_resamplers[0]->fmt_in.audio.i_rate = p_input->input.i_rate;
433 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
435 if( ! p_input->p_playback_rate_filter && p_input->i_nb_resamplers > 0 )
437 p_input->p_playback_rate_filter = p_input->pp_resamplers[0];
440 aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
441 p_input->i_nb_filters,
442 &p_input->input_alloc );
443 p_input->input_alloc.b_alloc = true;
445 /* i_bytes_per_sec is still == -1 if no filters */
446 p_input->input_alloc.i_bytes_per_sec = __MAX(
447 p_input->input_alloc.i_bytes_per_sec,
448 (int)(p_input->input.i_bytes_per_frame
449 * p_input->input.i_rate
450 / p_input->input.i_frame_length) );
452 ReplayGainSelect( p_aout, p_input );
455 p_input->b_error = false;
456 p_input->b_restart = false;
457 p_input->i_last_input_rate = INPUT_RATE_DEFAULT;
462 /*****************************************************************************
463 * aout_InputDelete : delete an input
464 *****************************************************************************
465 * This function must be entered with the mixer lock.
466 *****************************************************************************/
467 int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input )
469 AOUT_ASSERT_MIXER_LOCKED;
470 if ( p_input->b_error )
473 /* XXX We need to update b_recycle_vout before calling aout_FiltersDestroyPipeline.
474 * FIXME They can be a race condition if audio-visual is updated between
475 * aout_InputDelete and aout_InputNew.
477 char *psz_visual = var_GetString( p_aout, "audio-visual");
478 p_input->b_recycle_vout = psz_visual && *psz_visual;
481 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
482 p_input->i_nb_filters );
483 p_input->i_nb_filters = 0;
484 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
485 p_input->i_nb_resamplers );
486 p_input->i_nb_resamplers = 0;
487 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
492 /*****************************************************************************
493 * aout_InputPlay : play a buffer
494 *****************************************************************************
495 * This function must be entered with the input lock.
496 *****************************************************************************/
497 /* XXX Do not activate it !! */
498 //#define AOUT_PROCESS_BEFORE_CHEKS
499 int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
500 aout_buffer_t * p_buffer, int i_input_rate )
503 AOUT_ASSERT_INPUT_LOCKED;
505 if( p_input->b_restart )
508 uint8_t *p_first_byte_to_mix;
510 mtime_t i_pause_date;
512 aout_lock_mixer( p_aout );
513 aout_lock_input_fifos( p_aout );
515 /* A little trick to avoid loosing our input fifo and properties */
517 p_first_byte_to_mix = p_input->mixer.begin;
518 fifo = p_input->mixer.fifo;
519 b_paused = p_input->b_paused;
520 i_pause_date = p_input->i_pause_date;
522 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
524 aout_InputDelete( p_aout, p_input );
526 aout_InputNew( p_aout, p_input, &p_input->request_vout );
527 p_input->mixer.begin = p_first_byte_to_mix;
528 p_input->mixer.fifo = fifo;
529 p_input->b_paused = b_paused;
530 p_input->i_pause_date = i_pause_date;
532 aout_unlock_input_fifos( p_aout );
533 aout_unlock_mixer( p_aout );
536 if( i_input_rate != INPUT_RATE_DEFAULT && p_input->p_playback_rate_filter == NULL )
538 inputDrop( p_input, p_buffer );
542 #ifdef AOUT_PROCESS_BEFORE_CHEKS
543 /* Run pre-filters. */
544 aout_FiltersPlay( p_aout, p_input->pp_filters, p_input->i_nb_filters,
547 /* Actually run the resampler now. */
548 if ( p_input->i_nb_resamplers > 0 )
550 const mtime_t i_date = p_buffer->i_pts;
551 aout_FiltersPlay( p_aout, p_input->pp_resamplers,
552 p_input->i_nb_resamplers,
556 if( p_buffer->i_nb_samples <= 0 )
558 aout_BufferFree( p_buffer );
563 /* Handle input rate change, but keep drift correction */
564 if( i_input_rate != p_input->i_last_input_rate )
566 unsigned int * const pi_rate = &p_input->p_playback_rate_filter->fmt_in.audio.i_rate;
567 #define F(r,ir) ( INPUT_RATE_DEFAULT * (r) / (ir) )
568 const int i_delta = *pi_rate - F(p_input->input.i_rate,p_input->i_last_input_rate);
569 *pi_rate = F(p_input->input.i_rate + i_delta, i_input_rate);
571 p_input->i_last_input_rate = i_input_rate;
574 /* We don't care if someone changes the start date behind our back after
575 * this. We'll deal with that when pushing the buffer, and compensate
576 * with the next incoming buffer. */
577 aout_lock_input_fifos( p_aout );
578 start_date = aout_FifoNextStart( p_aout, &p_input->mixer.fifo );
579 aout_unlock_input_fifos( p_aout );
581 if ( start_date != 0 && start_date < mdate() )
583 /* The decoder is _very_ late. This can only happen if the user
584 * pauses the stream (or if the decoder is buggy, which cannot
586 msg_Warn( p_aout, "computed PTS is out of range (%"PRId64"), "
587 "clearing out", mdate() - start_date );
588 aout_lock_input_fifos( p_aout );
589 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
590 p_input->mixer.begin = NULL;
591 aout_unlock_input_fifos( p_aout );
592 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
593 msg_Warn( p_aout, "timing screwed, stopping resampling" );
594 inputResamplingStop( p_input );
595 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
599 if ( p_buffer->i_pts < mdate() + AOUT_MIN_PREPARE_TIME )
601 /* The decoder gives us f*cked up PTS. It's its business, but we
602 * can't present it anyway, so drop the buffer. */
603 msg_Warn( p_aout, "PTS is out of range (%"PRId64"), dropping buffer",
604 mdate() - p_buffer->i_pts );
606 inputDrop( p_input, p_buffer );
607 inputResamplingStop( p_input );
611 /* If the audio drift is too big then it's not worth trying to resample
613 mtime_t i_pts_tolerance = 3 * AOUT_PTS_TOLERANCE * i_input_rate / INPUT_RATE_DEFAULT;
614 if ( start_date != 0 &&
615 ( start_date < p_buffer->i_pts - i_pts_tolerance ) )
617 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), clearing out",
618 start_date - p_buffer->i_pts );
619 aout_lock_input_fifos( p_aout );
620 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
621 p_input->mixer.begin = NULL;
622 aout_unlock_input_fifos( p_aout );
623 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
624 msg_Warn( p_aout, "timing screwed, stopping resampling" );
625 inputResamplingStop( p_input );
626 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
629 else if ( start_date != 0 &&
630 ( start_date > p_buffer->i_pts + i_pts_tolerance) )
632 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), dropping buffer",
633 start_date - p_buffer->i_pts );
634 inputDrop( p_input, p_buffer );
638 if ( start_date == 0 ) start_date = p_buffer->i_pts;
640 #ifndef AOUT_PROCESS_BEFORE_CHEKS
641 /* Run pre-filters. */
642 aout_FiltersPlay( p_aout, p_input->pp_filters, p_input->i_nb_filters,
646 /* Run the resampler if needed.
647 * We first need to calculate the output rate of this resampler. */
648 if ( ( p_input->i_resampling_type == AOUT_RESAMPLING_NONE ) &&
649 ( start_date < p_buffer->i_pts - AOUT_PTS_TOLERANCE
650 || start_date > p_buffer->i_pts + AOUT_PTS_TOLERANCE ) &&
651 p_input->i_nb_resamplers > 0 )
653 /* Can happen in several circumstances :
654 * 1. A problem at the input (clock drift)
655 * 2. A small pause triggered by the user
656 * 3. Some delay in the output stage, causing a loss of lip
658 * Solution : resample the buffer to avoid a scratch.
660 mtime_t drift = p_buffer->i_pts - start_date;
662 p_input->i_resamp_start_date = mdate();
663 p_input->i_resamp_start_drift = (int)drift;
666 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
668 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
670 msg_Warn( p_aout, "buffer is %"PRId64" %s, triggering %ssampling",
671 drift > 0 ? drift : -drift,
672 drift > 0 ? "in advance" : "late",
673 drift > 0 ? "down" : "up");
676 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
678 /* Resampling has been triggered previously (because of dates
679 * mismatch). We want the resampling to happen progressively so
680 * it isn't too audible to the listener. */
682 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
684 p_input->pp_resamplers[0]->fmt_in.audio.i_rate += 2; /* Hz */
688 p_input->pp_resamplers[0]->fmt_in.audio.i_rate -= 2; /* Hz */
691 /* Check if everything is back to normal, in which case we can stop the
693 unsigned int i_nominal_rate =
694 (p_input->pp_resamplers[0] == p_input->p_playback_rate_filter)
695 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / i_input_rate
696 : p_input->input.i_rate;
697 if( p_input->pp_resamplers[0]->fmt_in.audio.i_rate == i_nominal_rate )
699 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
700 msg_Warn( p_aout, "resampling stopped after %"PRIi64" usec "
701 "(drift: %"PRIi64")",
702 mdate() - p_input->i_resamp_start_date,
703 p_buffer->i_pts - start_date);
705 else if( abs( (int)(p_buffer->i_pts - start_date) ) <
706 abs( p_input->i_resamp_start_drift ) / 2 )
708 /* if we reduced the drift from half, then it is time to switch
709 * back the resampling direction. */
710 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
711 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
713 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
714 p_input->i_resamp_start_drift = 0;
716 else if( p_input->i_resamp_start_drift &&
717 ( abs( (int)(p_buffer->i_pts - start_date) ) >
718 abs( p_input->i_resamp_start_drift ) * 3 / 2 ) )
720 /* If the drift is increasing and not decreasing, than something
721 * is bad. We'd better stop the resampling right now. */
722 msg_Warn( p_aout, "timing screwed, stopping resampling" );
723 inputResamplingStop( p_input );
724 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
728 #ifndef AOUT_PROCESS_BEFORE_CHEKS
729 /* Actually run the resampler now. */
730 if ( p_input->i_nb_resamplers > 0 )
732 aout_FiltersPlay( p_aout, p_input->pp_resamplers,
733 p_input->i_nb_resamplers,
737 if( p_buffer->i_nb_samples <= 0 )
739 aout_BufferFree( p_buffer );
744 /* Adding the start date will be managed by aout_FifoPush(). */
745 p_buffer->i_pts = start_date;
747 aout_lock_input_fifos( p_aout );
748 aout_FifoPush( p_aout, &p_input->mixer.fifo, p_buffer );
749 aout_unlock_input_fifos( p_aout );
753 /*****************************************************************************
755 *****************************************************************************/
757 static void inputFailure( aout_instance_t * p_aout, aout_input_t * p_input,
758 const char * psz_error_message )
761 msg_Err( p_aout, "%s", psz_error_message );
764 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
765 p_input->i_nb_filters );
766 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
767 p_input->i_nb_resamplers );
768 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
769 var_Destroy( p_aout, "visual" );
770 var_Destroy( p_aout, "equalizer" );
771 var_Destroy( p_aout, "audio-filter" );
772 var_Destroy( p_aout, "audio-visual" );
774 var_Destroy( p_aout, "audio-replay-gain-mode" );
775 var_Destroy( p_aout, "audio-replay-gain-default" );
776 var_Destroy( p_aout, "audio-replay-gain-preamp" );
777 var_Destroy( p_aout, "audio-replay-gain-peak-protection" );
780 p_input->b_error = 1;
783 static void inputDrop( aout_input_t *p_input, aout_buffer_t *p_buffer )
785 aout_BufferFree( p_buffer );
787 p_input->i_buffer_lost++;
790 static void inputResamplingStop( aout_input_t *p_input )
792 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
793 if( p_input->i_nb_resamplers != 0 )
795 p_input->pp_resamplers[0]->fmt_in.audio.i_rate =
796 ( p_input->pp_resamplers[0] == p_input->p_playback_rate_filter )
797 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / p_input->i_last_input_rate
798 : p_input->input.i_rate;
802 static vout_thread_t *RequestVout( void *p_private,
803 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
805 aout_instance_t *p_aout = p_private;
806 VLC_UNUSED(b_recycle);
807 return vout_Request( p_aout, p_vout, p_fmt );
810 vout_thread_t *aout_filter_RequestVout( aout_filter_t *p_filter,
811 vout_thread_t *p_vout, video_format_t *p_fmt )
813 aout_input_t *p_input = p_filter->p_owner->p_input;
814 aout_request_vout_t *p_request = &p_input->request_vout;
816 /* XXX: this only works from audio input */
817 /* If you want to use visualization filters from another place, you will
818 * need to add a new pf_aout_request_vout callback or store a pointer
819 * to aout_request_vout_t inside filter_t (i.e. a level of indirection). */
821 return p_request->pf_request_vout( p_request->p_private,
822 p_vout, p_fmt, p_input->b_recycle_vout );
825 static int ChangeFiltersString( aout_instance_t * p_aout, const char* psz_variable,
826 const char *psz_name, bool b_add )
828 return AoutChangeFilterString( VLC_OBJECT(p_aout), p_aout,
829 psz_variable, psz_name, b_add ) ? 1 : 0;
832 static int VisualizationCallback( vlc_object_t *p_this, char const *psz_cmd,
833 vlc_value_t oldval, vlc_value_t newval, void *p_data )
835 aout_instance_t *p_aout = (aout_instance_t *)p_this;
836 char *psz_mode = newval.psz_string;
837 (void)psz_cmd; (void)oldval; (void)p_data;
839 if( !psz_mode || !*psz_mode )
841 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
842 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
843 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
847 if( !strcmp( "goom", psz_mode ) )
849 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
850 ChangeFiltersString( p_aout, "audio-visual", "goom", true );
851 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
853 else if( !strcmp( "projectm", psz_mode ) )
855 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
856 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
857 ChangeFiltersString( p_aout, "audio-visual", "projectm", true );
861 var_Create( p_aout, "effect-list", VLC_VAR_STRING );
862 var_SetString( p_aout, "effect-list", psz_mode );
864 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
865 ChangeFiltersString( p_aout, "audio-visual", "visual", true );
866 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
871 AoutInputsMarkToRestart( p_aout );
876 static int EqualizerCallback( vlc_object_t *p_this, char const *psz_cmd,
877 vlc_value_t oldval, vlc_value_t newval, void *p_data )
879 aout_instance_t *p_aout = (aout_instance_t *)p_this;
880 char *psz_mode = newval.psz_string;
882 (void)psz_cmd; (void)oldval; (void)p_data;
884 if( !psz_mode || !*psz_mode )
886 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
891 var_Create( p_aout, "equalizer-preset", VLC_VAR_STRING );
892 var_SetString( p_aout, "equalizer-preset", psz_mode );
893 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
899 AoutInputsMarkToRestart( p_aout );
903 static int ReplayGainCallback( vlc_object_t *p_this, char const *psz_cmd,
904 vlc_value_t oldval, vlc_value_t newval, void *p_data )
906 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
907 VLC_UNUSED(newval); VLC_UNUSED(p_data);
908 aout_instance_t *p_aout = (aout_instance_t *)p_this;
911 aout_lock_mixer( p_aout );
912 for( i = 0; i < p_aout->i_nb_inputs; i++ )
913 ReplayGainSelect( p_aout, p_aout->pp_inputs[i] );
915 /* Restart the mixer (a trivial mixer may be in use) */
916 if( p_aout->p_mixer )
917 aout_MixerMultiplierSet( p_aout, p_aout->mixer_multiplier );
918 aout_unlock_mixer( p_aout );
923 static void ReplayGainSelect( aout_instance_t *p_aout, aout_input_t *p_input )
925 char *psz_replay_gain = var_GetNonEmptyString( p_aout,
926 "audio-replay-gain-mode" );
931 p_input->mixer.multiplier = 1.0;
933 if( !psz_replay_gain )
936 /* Find select mode */
937 if( !strcmp( psz_replay_gain, "track" ) )
938 i_mode = AUDIO_REPLAY_GAIN_TRACK;
939 else if( !strcmp( psz_replay_gain, "album" ) )
940 i_mode = AUDIO_REPLAY_GAIN_ALBUM;
942 i_mode = AUDIO_REPLAY_GAIN_MAX;
944 /* If the select mode is not available, prefer the other one */
946 if( i_use != AUDIO_REPLAY_GAIN_MAX && !p_input->replay_gain.pb_gain[i_use] )
948 for( i_use = 0; i_use < AUDIO_REPLAY_GAIN_MAX; i_use++ )
950 if( p_input->replay_gain.pb_gain[i_use] )
956 if( i_use != AUDIO_REPLAY_GAIN_MAX )
957 f_gain = p_input->replay_gain.pf_gain[i_use] + var_GetFloat( p_aout, "audio-replay-gain-preamp" );
958 else if( i_mode != AUDIO_REPLAY_GAIN_MAX )
959 f_gain = var_GetFloat( p_aout, "audio-replay-gain-default" );
962 p_input->mixer.multiplier = pow( 10.0, f_gain / 20.0 );
965 if( p_input->replay_gain.pb_peak[i_use] &&
966 var_GetBool( p_aout, "audio-replay-gain-peak-protection" ) &&
967 p_input->replay_gain.pf_peak[i_use] * p_input->mixer.multiplier > 1.0 )
969 p_input->mixer.multiplier = 1.0f / p_input->replay_gain.pf_peak[i_use];
972 free( psz_replay_gain );