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 filter",
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->i_last_input_rate = INPUT_RATE_DEFAULT;
464 /*****************************************************************************
465 * aout_InputDelete : delete an input
466 *****************************************************************************
467 * This function must be entered with the mixer lock.
468 *****************************************************************************/
469 int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input )
471 AOUT_ASSERT_MIXER_LOCKED;
472 if ( p_input->b_error )
475 /* XXX We need to update b_recycle_vout before calling aout_FiltersDestroyPipeline.
476 * FIXME They can be a race condition if audio-visual is updated between
477 * aout_InputDelete and aout_InputNew.
479 char *psz_visual = var_GetString( p_aout, "audio-visual");
480 p_input->b_recycle_vout = psz_visual && *psz_visual;
483 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
484 p_input->i_nb_filters );
485 p_input->i_nb_filters = 0;
486 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
487 p_input->i_nb_resamplers );
488 p_input->i_nb_resamplers = 0;
489 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
494 /*****************************************************************************
495 * aout_InputCheckAndRestart : restart an input
496 *****************************************************************************
497 * This function must be entered with the input and mixer lock.
498 *****************************************************************************/
499 void aout_InputCheckAndRestart( aout_instance_t * p_aout, aout_input_t * p_input )
501 AOUT_ASSERT_MIXER_LOCKED;
502 AOUT_ASSERT_INPUT_LOCKED;
504 if( !p_input->b_restart )
507 aout_lock_input_fifos( p_aout );
509 /* A little trick to avoid loosing our input fifo and properties */
511 uint8_t *p_first_byte_to_mix = p_input->mixer.begin;
512 aout_fifo_t fifo = p_input->mixer.fifo;
513 bool b_paused = p_input->b_paused;
514 mtime_t i_pause_date = p_input->i_pause_date;
516 aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
518 aout_InputDelete( p_aout, p_input );
520 aout_InputNew( p_aout, p_input, &p_input->request_vout );
521 p_input->mixer.begin = p_first_byte_to_mix;
522 p_input->mixer.fifo = fifo;
523 p_input->b_paused = b_paused;
524 p_input->i_pause_date = i_pause_date;
526 p_input->b_restart = false;
528 aout_unlock_input_fifos( p_aout );
530 /*****************************************************************************
531 * aout_InputPlay : play a buffer
532 *****************************************************************************
533 * This function must be entered with the input lock.
534 *****************************************************************************/
535 /* XXX Do not activate it !! */
536 //#define AOUT_PROCESS_BEFORE_CHEKS
537 int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
538 aout_buffer_t * p_buffer, int i_input_rate )
541 AOUT_ASSERT_INPUT_LOCKED;
543 if( i_input_rate != INPUT_RATE_DEFAULT && p_input->p_playback_rate_filter == NULL )
545 inputDrop( p_input, p_buffer );
549 #ifdef AOUT_PROCESS_BEFORE_CHEKS
550 /* Run pre-filters. */
551 aout_FiltersPlay( p_aout, p_input->pp_filters, p_input->i_nb_filters,
556 /* Actually run the resampler now. */
557 if ( p_input->i_nb_resamplers > 0 )
559 const mtime_t i_date = p_buffer->i_pts;
560 aout_FiltersPlay( p_aout, p_input->pp_resamplers,
561 p_input->i_nb_resamplers,
567 if( p_buffer->i_nb_samples <= 0 )
569 block_Release( p_buffer );
574 /* Handle input rate change, but keep drift correction */
575 if( i_input_rate != p_input->i_last_input_rate )
577 unsigned int * const pi_rate = &p_input->p_playback_rate_filter->fmt_in.audio.i_rate;
578 #define F(r,ir) ( INPUT_RATE_DEFAULT * (r) / (ir) )
579 const int i_delta = *pi_rate - F(p_input->input.i_rate,p_input->i_last_input_rate);
580 *pi_rate = F(p_input->input.i_rate + i_delta, i_input_rate);
582 p_input->i_last_input_rate = i_input_rate;
585 /* We don't care if someone changes the start date behind our back after
586 * this. We'll deal with that when pushing the buffer, and compensate
587 * with the next incoming buffer. */
588 aout_lock_input_fifos( p_aout );
589 start_date = aout_FifoNextStart( p_aout, &p_input->mixer.fifo );
590 aout_unlock_input_fifos( p_aout );
592 if ( start_date != 0 && start_date < mdate() )
594 /* The decoder is _very_ late. This can only happen if the user
595 * pauses the stream (or if the decoder is buggy, which cannot
597 msg_Warn( p_aout, "computed PTS is out of range (%"PRId64"), "
598 "clearing out", mdate() - start_date );
599 aout_lock_input_fifos( p_aout );
600 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
601 p_input->mixer.begin = NULL;
602 aout_unlock_input_fifos( p_aout );
603 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
604 msg_Warn( p_aout, "timing screwed, stopping resampling" );
605 inputResamplingStop( p_input );
606 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
610 if ( p_buffer->i_pts < mdate() + AOUT_MIN_PREPARE_TIME )
612 /* The decoder gives us f*cked up PTS. It's its business, but we
613 * can't present it anyway, so drop the buffer. */
614 msg_Warn( p_aout, "PTS is out of range (%"PRId64"), dropping buffer",
615 mdate() - p_buffer->i_pts );
617 inputDrop( p_input, p_buffer );
618 inputResamplingStop( p_input );
622 /* If the audio drift is too big then it's not worth trying to resample
624 mtime_t i_pts_tolerance = 3 * AOUT_PTS_TOLERANCE * i_input_rate / INPUT_RATE_DEFAULT;
625 if ( start_date != 0 &&
626 ( start_date < p_buffer->i_pts - i_pts_tolerance ) )
628 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), clearing out",
629 start_date - p_buffer->i_pts );
630 aout_lock_input_fifos( p_aout );
631 aout_FifoSet( p_aout, &p_input->mixer.fifo, 0 );
632 p_input->mixer.begin = NULL;
633 aout_unlock_input_fifos( p_aout );
634 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
635 msg_Warn( p_aout, "timing screwed, stopping resampling" );
636 inputResamplingStop( p_input );
637 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
640 else if ( start_date != 0 &&
641 ( start_date > p_buffer->i_pts + i_pts_tolerance) )
643 msg_Warn( p_aout, "audio drift is too big (%"PRId64"), dropping buffer",
644 start_date - p_buffer->i_pts );
645 inputDrop( p_input, p_buffer );
649 if ( start_date == 0 ) start_date = p_buffer->i_pts;
651 #ifndef AOUT_PROCESS_BEFORE_CHEKS
652 /* Run pre-filters. */
653 aout_FiltersPlay( p_input->pp_filters, p_input->i_nb_filters, &p_buffer );
658 /* Run the resampler if needed.
659 * We first need to calculate the output rate of this resampler. */
660 if ( ( p_input->i_resampling_type == AOUT_RESAMPLING_NONE ) &&
661 ( start_date < p_buffer->i_pts - AOUT_PTS_TOLERANCE
662 || start_date > p_buffer->i_pts + AOUT_PTS_TOLERANCE ) &&
663 p_input->i_nb_resamplers > 0 )
665 /* Can happen in several circumstances :
666 * 1. A problem at the input (clock drift)
667 * 2. A small pause triggered by the user
668 * 3. Some delay in the output stage, causing a loss of lip
670 * Solution : resample the buffer to avoid a scratch.
672 mtime_t drift = p_buffer->i_pts - start_date;
674 p_input->i_resamp_start_date = mdate();
675 p_input->i_resamp_start_drift = (int)drift;
678 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
680 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
682 msg_Warn( p_aout, "buffer is %"PRId64" %s, triggering %ssampling",
683 drift > 0 ? drift : -drift,
684 drift > 0 ? "in advance" : "late",
685 drift > 0 ? "down" : "up");
688 if ( p_input->i_resampling_type != AOUT_RESAMPLING_NONE )
690 /* Resampling has been triggered previously (because of dates
691 * mismatch). We want the resampling to happen progressively so
692 * it isn't too audible to the listener. */
694 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
696 p_input->pp_resamplers[0]->fmt_in.audio.i_rate += 2; /* Hz */
700 p_input->pp_resamplers[0]->fmt_in.audio.i_rate -= 2; /* Hz */
703 /* Check if everything is back to normal, in which case we can stop the
705 unsigned int i_nominal_rate =
706 (p_input->pp_resamplers[0] == p_input->p_playback_rate_filter)
707 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / i_input_rate
708 : p_input->input.i_rate;
709 if( p_input->pp_resamplers[0]->fmt_in.audio.i_rate == i_nominal_rate )
711 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
712 msg_Warn( p_aout, "resampling stopped after %"PRIi64" usec "
713 "(drift: %"PRIi64")",
714 mdate() - p_input->i_resamp_start_date,
715 p_buffer->i_pts - start_date);
717 else if( abs( (int)(p_buffer->i_pts - start_date) ) <
718 abs( p_input->i_resamp_start_drift ) / 2 )
720 /* if we reduced the drift from half, then it is time to switch
721 * back the resampling direction. */
722 if( p_input->i_resampling_type == AOUT_RESAMPLING_UP )
723 p_input->i_resampling_type = AOUT_RESAMPLING_DOWN;
725 p_input->i_resampling_type = AOUT_RESAMPLING_UP;
726 p_input->i_resamp_start_drift = 0;
728 else if( p_input->i_resamp_start_drift &&
729 ( abs( (int)(p_buffer->i_pts - start_date) ) >
730 abs( p_input->i_resamp_start_drift ) * 3 / 2 ) )
732 /* If the drift is increasing and not decreasing, than something
733 * is bad. We'd better stop the resampling right now. */
734 msg_Warn( p_aout, "timing screwed, stopping resampling" );
735 inputResamplingStop( p_input );
736 p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
740 #ifndef AOUT_PROCESS_BEFORE_CHEKS
741 /* Actually run the resampler now. */
742 if ( p_input->i_nb_resamplers > 0 )
744 aout_FiltersPlay( p_input->pp_resamplers, p_input->i_nb_resamplers,
750 if( p_buffer->i_nb_samples <= 0 )
752 block_Release( p_buffer );
757 /* Adding the start date will be managed by aout_FifoPush(). */
758 p_buffer->i_pts = start_date;
760 aout_lock_input_fifos( p_aout );
761 aout_FifoPush( p_aout, &p_input->mixer.fifo, p_buffer );
762 aout_unlock_input_fifos( p_aout );
766 /*****************************************************************************
768 *****************************************************************************/
770 static void inputFailure( aout_instance_t * p_aout, aout_input_t * p_input,
771 const char * psz_error_message )
774 msg_Err( p_aout, "%s", psz_error_message );
777 aout_FiltersDestroyPipeline( p_aout, p_input->pp_filters,
778 p_input->i_nb_filters );
779 aout_FiltersDestroyPipeline( p_aout, p_input->pp_resamplers,
780 p_input->i_nb_resamplers );
781 aout_FifoDestroy( p_aout, &p_input->mixer.fifo );
782 var_Destroy( p_aout, "visual" );
783 var_Destroy( p_aout, "equalizer" );
784 var_Destroy( p_aout, "audio-filter" );
785 var_Destroy( p_aout, "audio-visual" );
787 var_Destroy( p_aout, "audio-replay-gain-mode" );
788 var_Destroy( p_aout, "audio-replay-gain-default" );
789 var_Destroy( p_aout, "audio-replay-gain-preamp" );
790 var_Destroy( p_aout, "audio-replay-gain-peak-protection" );
793 p_input->b_error = 1;
796 static void inputDrop( aout_input_t *p_input, aout_buffer_t *p_buffer )
798 aout_BufferFree( p_buffer );
800 p_input->i_buffer_lost++;
803 static void inputResamplingStop( aout_input_t *p_input )
805 p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
806 if( p_input->i_nb_resamplers != 0 )
808 p_input->pp_resamplers[0]->fmt_in.audio.i_rate =
809 ( p_input->pp_resamplers[0] == p_input->p_playback_rate_filter )
810 ? INPUT_RATE_DEFAULT * p_input->input.i_rate / p_input->i_last_input_rate
811 : p_input->input.i_rate;
815 static vout_thread_t *RequestVout( void *p_private,
816 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
818 aout_instance_t *p_aout = p_private;
819 VLC_UNUSED(b_recycle);
820 return vout_Request( p_aout, p_vout, p_fmt );
823 vout_thread_t *aout_filter_RequestVout( filter_t *p_filter,
824 vout_thread_t *p_vout, video_format_t *p_fmt )
826 aout_input_t *p_input = p_filter->p_owner->p_input;
827 aout_request_vout_t *p_request = &p_input->request_vout;
829 /* XXX: this only works from audio input */
830 /* If you want to use visualization filters from another place, you will
831 * need to add a new pf_aout_request_vout callback or store a pointer
832 * to aout_request_vout_t inside filter_t (i.e. a level of indirection). */
834 return p_request->pf_request_vout( p_request->p_private,
835 p_vout, p_fmt, p_input->b_recycle_vout );
838 static int ChangeFiltersString( aout_instance_t * p_aout, const char* psz_variable,
839 const char *psz_name, bool b_add )
841 return AoutChangeFilterString( VLC_OBJECT(p_aout), p_aout,
842 psz_variable, psz_name, b_add ) ? 1 : 0;
845 static int VisualizationCallback( vlc_object_t *p_this, char const *psz_cmd,
846 vlc_value_t oldval, vlc_value_t newval, void *p_data )
848 aout_instance_t *p_aout = (aout_instance_t *)p_this;
849 char *psz_mode = newval.psz_string;
850 (void)psz_cmd; (void)oldval; (void)p_data;
852 if( !psz_mode || !*psz_mode )
854 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
855 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
856 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
860 if( !strcmp( "goom", psz_mode ) )
862 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
863 ChangeFiltersString( p_aout, "audio-visual", "goom", true );
864 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
866 else if( !strcmp( "projectm", psz_mode ) )
868 ChangeFiltersString( p_aout, "audio-visual", "visual", false );
869 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
870 ChangeFiltersString( p_aout, "audio-visual", "projectm", true );
874 var_Create( p_aout, "effect-list", VLC_VAR_STRING );
875 var_SetString( p_aout, "effect-list", psz_mode );
877 ChangeFiltersString( p_aout, "audio-visual", "goom", false );
878 ChangeFiltersString( p_aout, "audio-visual", "visual", true );
879 ChangeFiltersString( p_aout, "audio-visual", "projectm", false );
884 AoutInputsMarkToRestart( p_aout );
889 static int EqualizerCallback( vlc_object_t *p_this, char const *psz_cmd,
890 vlc_value_t oldval, vlc_value_t newval, void *p_data )
892 aout_instance_t *p_aout = (aout_instance_t *)p_this;
893 char *psz_mode = newval.psz_string;
895 (void)psz_cmd; (void)oldval; (void)p_data;
897 if( !psz_mode || !*psz_mode )
899 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
904 var_Create( p_aout, "equalizer-preset", VLC_VAR_STRING );
905 var_SetString( p_aout, "equalizer-preset", psz_mode );
906 i_ret = ChangeFiltersString( p_aout, "audio-filter", "equalizer",
912 AoutInputsMarkToRestart( p_aout );
916 static int ReplayGainCallback( vlc_object_t *p_this, char const *psz_cmd,
917 vlc_value_t oldval, vlc_value_t newval, void *p_data )
919 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
920 VLC_UNUSED(newval); VLC_UNUSED(p_data);
921 aout_instance_t *p_aout = (aout_instance_t *)p_this;
924 aout_lock_mixer( p_aout );
925 for( i = 0; i < p_aout->i_nb_inputs; i++ )
926 ReplayGainSelect( p_aout, p_aout->pp_inputs[i] );
928 /* Restart the mixer (a trivial mixer may be in use) */
929 if( p_aout->p_mixer )
930 aout_MixerMultiplierSet( p_aout, p_aout->mixer_multiplier );
931 aout_unlock_mixer( p_aout );
936 static void ReplayGainSelect( aout_instance_t *p_aout, aout_input_t *p_input )
938 char *psz_replay_gain = var_GetNonEmptyString( p_aout,
939 "audio-replay-gain-mode" );
944 p_input->mixer.multiplier = 1.0;
946 if( !psz_replay_gain )
949 /* Find select mode */
950 if( !strcmp( psz_replay_gain, "track" ) )
951 i_mode = AUDIO_REPLAY_GAIN_TRACK;
952 else if( !strcmp( psz_replay_gain, "album" ) )
953 i_mode = AUDIO_REPLAY_GAIN_ALBUM;
955 i_mode = AUDIO_REPLAY_GAIN_MAX;
957 /* If the select mode is not available, prefer the other one */
959 if( i_use != AUDIO_REPLAY_GAIN_MAX && !p_input->replay_gain.pb_gain[i_use] )
961 for( i_use = 0; i_use < AUDIO_REPLAY_GAIN_MAX; i_use++ )
963 if( p_input->replay_gain.pb_gain[i_use] )
969 if( i_use != AUDIO_REPLAY_GAIN_MAX )
970 f_gain = p_input->replay_gain.pf_gain[i_use] + var_GetFloat( p_aout, "audio-replay-gain-preamp" );
971 else if( i_mode != AUDIO_REPLAY_GAIN_MAX )
972 f_gain = var_GetFloat( p_aout, "audio-replay-gain-default" );
975 p_input->mixer.multiplier = pow( 10.0, f_gain / 20.0 );
978 if( p_input->replay_gain.pb_peak[i_use] &&
979 var_GetBool( p_aout, "audio-replay-gain-peak-protection" ) &&
980 p_input->replay_gain.pf_peak[i_use] * p_input->mixer.multiplier > 1.0 )
982 p_input->mixer.multiplier = 1.0f / p_input->replay_gain.pf_peak[i_use];
985 free( psz_replay_gain );