static filter_t *CreateFilter (vlc_object_t *obj, const char *type,
const char *name, filter_owner_sys_t *owner,
const audio_sample_format_t *infmt,
const audio_sample_format_t *outfmt)
{
filter_t *filter = vlc_custom_create (obj, sizeof (*filter), type);
if (unlikely(filter == NULL))
return NULL;
filter->owner.sys = owner;
filter->fmt_in.audio = *infmt;
filter->fmt_in.i_codec = infmt->i_format;
filter->fmt_out.audio = *outfmt;
filter->fmt_out.i_codec = outfmt->i_format;
filter->p_module = module_need (filter, type, name, false);
if (filter->p_module == NULL)
{
/* If probing failed, formats shall not have been modified. */
assert (AOUT_FMTS_IDENTICAL(&filter->fmt_in.audio, infmt));
assert (AOUT_FMTS_IDENTICAL(&filter->fmt_out.audio, outfmt));
vlc_object_release (filter);
filter = NULL;
}
else
assert (filter->pf_audio_filter != NULL);
return filter;
}
static int Open( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
if ( !AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio, &p_filter->fmt_out.audio ) )
{
msg_Warn( p_filter, "bad input or output format" );
return VLC_EGENERIC;
}
p_sys = p_filter->p_sys = malloc( sizeof( *p_sys ) );
if( !p_sys )
return VLC_ENOMEM;
p_sys->p_mixer = aout_MixerNew( p_this, p_filter->fmt_in.audio.i_format );
if( !p_sys->p_mixer )
{
msg_Warn( p_filter, "unsupported format" );
free( p_sys );
return VLC_EGENERIC;
}
p_sys->f_gain = var_InheritFloat( p_filter->p_parent, "gain-value" );
msg_Dbg( p_filter, "gain multiplier sets to %.2fx", p_sys->f_gain );
p_filter->pf_audio_filter = Process;
return VLC_SUCCESS;
}
static int Open (vlc_object_t *obj)
{
filter_t *filter = (filter_t *)obj;
if (filter->fmt_in.audio.i_format != VLC_CODEC_FL32
|| !AOUT_FMTS_IDENTICAL(&filter->fmt_in.audio, &filter->fmt_out.audio))
return VLC_EGENERIC;
if (filter->fmt_in.audio.i_channels != 2)
{
msg_Err (filter, "voice removal requires stereo");
return VLC_EGENERIC;
}
filter->pf_audio_filter = Process;
return VLC_SUCCESS;
}
/*****************************************************************************
* aout_FiltersCreatePipeline: create a filters pipeline to transform a sample
* format to another
*****************************************************************************
* TODO : allow the user to add/remove specific filters
*****************************************************************************/
int aout_FiltersCreatePipeline( aout_instance_t * p_aout,
aout_filter_t ** pp_filters,
int * pi_nb_filters,
const audio_sample_format_t * p_input_format,
const audio_sample_format_t * p_output_format )
{
audio_sample_format_t temp_format;
int i_nb_conversions;
if ( AOUT_FMTS_IDENTICAL( p_input_format, p_output_format ) )
{
msg_Dbg( p_aout, "no need for any filter" );
*pi_nb_filters = 0;
return 0;
}
aout_FormatsPrint( p_aout, "filter(s)", p_input_format, p_output_format );
/* Try to find a filter to do the whole conversion. */
pp_filters[0] = FindFilter( p_aout, p_input_format, p_output_format );
if ( pp_filters[0] != NULL )
{
msg_Dbg( p_aout, "found a filter for the whole conversion" );
*pi_nb_filters = 1;
return 0;
}
/* We'll have to split the conversion. We always do the downmixing
* before the resampling, because the audio decoder can probably do it
* for us. */
i_nb_conversions = SplitConversion( p_input_format,
p_output_format, &temp_format );
if ( !i_nb_conversions )
{
/* There was only one conversion to do, and we already failed. */
msg_Err( p_aout, "couldn't find a filter for the conversion" );
return -1;
}
pp_filters[0] = FindFilter( p_aout, p_input_format, &temp_format );
if ( pp_filters[0] == NULL && i_nb_conversions == 2 )
{
/* Try with only one conversion. */
SplitConversion( p_input_format, &temp_format, &temp_format );
pp_filters[0] = FindFilter( p_aout, p_input_format, &temp_format );
}
if ( pp_filters[0] == NULL )
{
msg_Err( p_aout,
"couldn't find a filter for the first part of the conversion" );
return -1;
}
/* We have the first stage of the conversion. Find a filter for
* the rest. */
pp_filters[1] = FindFilter( p_aout, &pp_filters[0]->output,
p_output_format );
if ( pp_filters[1] == NULL )
{
/* Try to split the conversion. */
i_nb_conversions = SplitConversion( &pp_filters[0]->output,
p_output_format, &temp_format );
if ( !i_nb_conversions )
{
vlc_object_detach( pp_filters[0] );
vlc_object_destroy( pp_filters[0] );
msg_Err( p_aout,
"couldn't find a filter for the second part of the conversion" );
}
pp_filters[1] = FindFilter( p_aout, &pp_filters[0]->output,
&temp_format );
pp_filters[2] = FindFilter( p_aout, &temp_format,
p_output_format );
if ( pp_filters[1] == NULL || pp_filters[2] == NULL )
{
vlc_object_detach( pp_filters[0] );
vlc_object_destroy( pp_filters[0] );
if ( pp_filters[1] != NULL )
{
vlc_object_detach( pp_filters[1] );
vlc_object_destroy( pp_filters[1] );
}
if ( pp_filters[2] != NULL )
{
vlc_object_detach( pp_filters[2] );
vlc_object_destroy( pp_filters[2] );
}
msg_Err( p_aout,
"couldn't find filters for the second part of the conversion" );
}
*pi_nb_filters = 3;
}
else
{
*pi_nb_filters = 2;
}
/* We have enough filters. */
msg_Dbg( p_aout, "found %d filters for the whole conversion",
*pi_nb_filters );
return 0;
}
/*****************************************************************************
* aout_InputNew : allocate a new input and rework the filter pipeline
*****************************************************************************/
int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t *p_request_vout )
{
audio_sample_format_t chain_input_format;
audio_sample_format_t chain_output_format;
vlc_value_t val, text;
char *psz_filters, *psz_visual, *psz_scaletempo;
int i_visual;
aout_FormatPrint( p_aout, "input", &p_input->input );
p_input->i_nb_resamplers = p_input->i_nb_filters = 0;
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
p_input->mixer.begin = NULL;
/* */
if( p_request_vout )
{
p_input->request_vout = *p_request_vout;
}
else
{
p_input->request_vout.pf_request_vout = RequestVout;
p_input->request_vout.p_private = p_aout;
}
/* Prepare format structure */
chain_input_format = p_input->input;
chain_output_format = p_aout->mixer_format;
chain_output_format.i_rate = p_input->input.i_rate;
aout_FormatPrepare( &chain_output_format );
/* Now add user filters */
if( var_Type( p_aout, "visual" ) == 0 )
{
var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Visualizations");
var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = (char*)""; text.psz_string = _("Disable");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"spectrometer"; text.psz_string = _("Spectrometer");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"scope"; text.psz_string = _("Scope");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"spectrum"; text.psz_string = _("Spectrum");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"vuMeter"; text.psz_string = _("Vu meter");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
/* Look for goom plugin */
if( module_exists( "goom" ) )
{
val.psz_string = (char*)"goom"; text.psz_string = (char*)"Goom";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
/* Look for libprojectM plugin */
if( module_exists( "projectm" ) )
{
val.psz_string = (char*)"projectm"; text.psz_string = (char*)"projectM";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
{
var_SetString( p_aout, "visual", val.psz_string );
free( val.psz_string );
}
var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
}
if( var_Type( p_aout, "equalizer" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "equalizer",
VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Equalizer");
var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = (char*)""; text.psz_string = _("Disable");
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = (char *)p_config->ppsz_list[i];
text.psz_string = (char *)p_config->ppsz_list_text[i];
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
}
}
if( var_Type( p_aout, "audio-filter" ) == 0 )
{
var_Create( p_aout, "audio-filter",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio filters");
var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-visual" ) == 0 )
{
var_Create( p_aout, "audio-visual",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio visualizations");
var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-replay-gain-mode" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "audio-replay-gain-mode" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "audio-replay-gain-mode",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Replay gain");
var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = (char *)p_config->ppsz_list[i];
text.psz_string = (char *)p_config->ppsz_list_text[i];
var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "audio-replay-gain-mode", ReplayGainCallback, NULL );
}
}
if( var_Type( p_aout, "audio-replay-gain-preamp" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-preamp",
VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-replay-gain-default" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-default",
VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-replay-gain-peak-protection" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-peak-protection",
VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-time-stretch" ) == 0 )
{
var_Create( p_aout, "audio-time-stretch",
VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
}
psz_filters = var_GetString( p_aout, "audio-filter" );
psz_visual = var_GetString( p_aout, "audio-visual");
psz_scaletempo = var_GetBool( p_aout, "audio-time-stretch" ) ? strdup( "scaletempo" ) : NULL;
p_input->b_recycle_vout = psz_visual && *psz_visual;
/* parse user filter lists */
char *const ppsz_array[] = { psz_scaletempo, psz_filters, psz_visual };
p_input->p_playback_rate_filter = NULL;
for( i_visual = 0; i_visual < 3 && !AOUT_FMT_NON_LINEAR(&chain_output_format); i_visual++ )
{
char *psz_next = NULL;
char *psz_parser = ppsz_array[i_visual];
if( psz_parser == NULL || !*psz_parser )
continue;
while( psz_parser && *psz_parser )
{
filter_t * p_filter = NULL;
if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
{
msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
break;
}
while( *psz_parser == ' ' && *psz_parser == ':' )
{
psz_parser++;
}
if( ( psz_next = strchr( psz_parser , ':' ) ) )
{
*psz_next++ = '\0';
}
if( *psz_parser =='\0' )
{
break;
}
/* Create a VLC object */
static const char typename[] = "audio filter";
p_filter = vlc_custom_create( p_aout, sizeof(*p_filter),
VLC_OBJECT_GENERIC, typename );
if( p_filter == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
psz_parser = psz_next;
continue;
}
vlc_object_attach( p_filter , p_aout );
p_filter->p_owner = malloc( sizeof(*p_filter->p_owner) );
p_filter->p_owner->p_aout = p_aout;
p_filter->p_owner->p_input = p_input;
/* request format */
memcpy( &p_filter->fmt_in.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->fmt_in.i_codec = chain_output_format.i_format;
memcpy( &p_filter->fmt_out.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->fmt_out.i_codec = chain_output_format.i_format;
p_filter->pf_audio_buffer_new = aout_FilterBufferNew;
/* try to find the requested filter */
if( i_visual == 2 ) /* this can only be a visualization module */
{
p_filter->p_module = module_need( p_filter, "visualization2",
psz_parser, true );
}
else /* this can be a audio filter module as well as a visualization module */
{
p_filter->p_module = module_need( p_filter, "audio filter",
psz_parser, true );
if ( p_filter->p_module == NULL )
{
/* if the filter requested a special format, retry */
if ( !( AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio,
&chain_input_format )
&& AOUT_FMTS_IDENTICAL( &p_filter->fmt_out.audio,
&chain_output_format ) ) )
{
aout_FormatPrepare( &p_filter->fmt_in.audio );
aout_FormatPrepare( &p_filter->fmt_out.audio );
p_filter->p_module = module_need( p_filter,
"audio filter",
psz_parser, true );
}
/* try visual filters */
else
{
memcpy( &p_filter->fmt_in.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->fmt_out.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_need( p_filter,
"visualization2",
psz_parser, true );
}
}
}
/* failure */
if ( p_filter->p_module == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
free( p_filter->p_owner );
vlc_object_release( p_filter );
psz_parser = psz_next;
continue;
}
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format,
&p_filter->fmt_in.audio ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&p_filter->fmt_in.audio ) < 0 )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
module_unneed( p_filter, p_filter->p_module );
free( p_filter->p_owner );
vlc_object_release( p_filter );
psz_parser = psz_next;
continue;
}
}
/* success */
p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
memcpy( &chain_input_format, &p_filter->fmt_out.audio,
sizeof( audio_sample_format_t ) );
if( i_visual == 0 ) /* scaletempo */
p_input->p_playback_rate_filter = p_filter;
/* next filter if any */
psz_parser = psz_next;
}
}
free( psz_visual );
free( psz_filters );
free( psz_scaletempo );
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&chain_output_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
return -1;
}
}
/* Prepare hints for the buffer allocator. */
p_input->input_alloc.b_alloc = true;
p_input->input_alloc.i_bytes_per_sec = -1;
/* Create resamplers. */
if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer_format ) )
{
chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
p_aout->mixer_format.i_rate)
* (100 + AOUT_MAX_RESAMPLING)) / 100;
if ( chain_output_format.i_rate == p_aout->mixer_format.i_rate )
{
/* Just in case... */
chain_output_format.i_rate++;
}
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
&p_input->i_nb_resamplers,
&chain_output_format,
&p_aout->mixer_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
return -1;
}
aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
p_input->i_nb_resamplers,
&p_input->input_alloc );
p_input->input_alloc.b_alloc = true;
/* Setup the initial rate of the resampler */
p_input->pp_resamplers[0]->fmt_in.audio.i_rate = p_input->input.i_rate;
}
p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
if( ! p_input->p_playback_rate_filter && p_input->i_nb_resamplers > 0 )
{
p_input->p_playback_rate_filter = p_input->pp_resamplers[0];
}
aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
p_input->i_nb_filters,
&p_input->input_alloc );
p_input->input_alloc.b_alloc = true;
/* i_bytes_per_sec is still == -1 if no filters */
p_input->input_alloc.i_bytes_per_sec = __MAX(
p_input->input_alloc.i_bytes_per_sec,
(int)(p_input->input.i_bytes_per_frame
* p_input->input.i_rate
/ p_input->input.i_frame_length) );
ReplayGainSelect( p_aout, p_input );
/* Success */
p_input->b_error = false;
p_input->i_last_input_rate = INPUT_RATE_DEFAULT;
return 0;
}
/*****************************************************************************
* aout_FiltersCreatePipeline: create a filters pipeline to transform a sample
* format to another
*****************************************************************************
* pi_nb_filters must be initialized before calling this function
*****************************************************************************/
int aout_FiltersCreatePipeline( aout_instance_t * p_aout,
aout_filter_t ** pp_filters_start,
int * pi_nb_filters,
const audio_sample_format_t * p_input_format,
const audio_sample_format_t * p_output_format )
{
aout_filter_t** pp_filters = pp_filters_start + *pi_nb_filters;
audio_sample_format_t temp_format;
int i_nb_conversions;
if ( AOUT_FMTS_IDENTICAL( p_input_format, p_output_format ) )
{
msg_Dbg( p_aout, "no need for any filter" );
return 0;
}
aout_FormatsPrint( p_aout, "filter(s)", p_input_format, p_output_format );
if( *pi_nb_filters + 1 > AOUT_MAX_FILTERS )
{
msg_Err( p_aout, "max filter reached (%d)", AOUT_MAX_FILTERS );
return -1;
}
/* Try to find a filter to do the whole conversion. */
pp_filters[0] = FindFilter( p_aout, p_input_format, p_output_format );
if ( pp_filters[0] != NULL )
{
msg_Dbg( p_aout, "found a filter for the whole conversion" );
++*pi_nb_filters;
return 0;
}
/* We'll have to split the conversion. We always do the downmixing
* before the resampling, because the audio decoder can probably do it
* for us. */
i_nb_conversions = SplitConversion( p_input_format,
p_output_format, &temp_format );
if ( !i_nb_conversions )
{
/* There was only one conversion to do, and we already failed. */
msg_Err( p_aout, "couldn't find a filter for the conversion" );
return -1;
}
pp_filters[0] = FindFilter( p_aout, p_input_format, &temp_format );
if ( pp_filters[0] == NULL && i_nb_conversions == 2 )
{
/* Try with only one conversion. */
SplitConversion( p_input_format, &temp_format, &temp_format );
pp_filters[0] = FindFilter( p_aout, p_input_format, &temp_format );
}
if ( pp_filters[0] == NULL )
{
msg_Err( p_aout,
"couldn't find a filter for the first part of the conversion" );
return -1;
}
/* We have the first stage of the conversion. Find a filter for
* the rest. */
if( *pi_nb_filters + 2 > AOUT_MAX_FILTERS )
{
ReleaseFilter( pp_filters[0] );
msg_Err( p_aout, "max filter reached (%d)", AOUT_MAX_FILTERS );
return -1;
}
pp_filters[1] = FindFilter( p_aout, &pp_filters[0]->output,
p_output_format );
if ( pp_filters[1] == NULL )
{
/* Try to split the conversion. */
i_nb_conversions = SplitConversion( &pp_filters[0]->output,
p_output_format, &temp_format );
if ( !i_nb_conversions )
{
ReleaseFilter( pp_filters[0] );
msg_Err( p_aout,
"couldn't find a filter for the second part of the conversion" );
return -1;
}
if( *pi_nb_filters + 3 > AOUT_MAX_FILTERS )
{
ReleaseFilter( pp_filters[0] );
msg_Err( p_aout, "max filter reached (%d)", AOUT_MAX_FILTERS );
return -1;
}
pp_filters[1] = FindFilter( p_aout, &pp_filters[0]->output,
&temp_format );
pp_filters[2] = FindFilter( p_aout, &temp_format,
p_output_format );
if ( pp_filters[1] == NULL || pp_filters[2] == NULL )
{
ReleaseFilter( pp_filters[0] );
if ( pp_filters[1] != NULL )
{
ReleaseFilter( pp_filters[1] );
}
if ( pp_filters[2] != NULL )
{
ReleaseFilter( pp_filters[2] );
}
msg_Err( p_aout,
"couldn't find filters for the second part of the conversion" );
return -1;
}
*pi_nb_filters += 3;
msg_Dbg( p_aout, "found 3 filters for the whole conversion" );
}
else
{
*pi_nb_filters += 2;
msg_Dbg( p_aout, "found 2 filters for the whole conversion" );
}
return 0;
}
/**
* Creates an audio output
*/
int aout_DecNew( audio_output_t *p_aout,
const audio_sample_format_t *p_format,
const audio_replay_gain_t *p_replay_gain,
const aout_request_vout_t *p_request_vout )
{
/* Sanitize audio format */
if( p_format->i_channels > 32 )
{
msg_Err( p_aout, "too many audio channels (%u)",
p_format->i_channels );
return -1;
}
if( p_format->i_channels <= 0 )
{
msg_Err( p_aout, "no audio channels" );
return -1;
}
if( p_format->i_channels != aout_FormatNbChannels( p_format ) )
{
msg_Err( p_aout, "incompatible audio channels count with layout mask" );
return -1;
}
if( p_format->i_rate > 192000 )
{
msg_Err( p_aout, "excessive audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
if( p_format->i_rate < 4000 )
{
msg_Err( p_aout, "too low audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
aout_owner_t *owner = aout_owner(p_aout);
#ifdef RECYCLE
/* Calling decoder is responsible for serializing aout_DecNew() and
* aout_DecDelete(). So no need to lock to _read_ those properties. */
if (owner->module != NULL) /* <- output exists */
{ /* Check if we can recycle the existing output and pipelines */
if (AOUT_FMTS_IDENTICAL(&owner->input_format, p_format))
return 0;
/* TODO? If the new input format is closer to the output format than
* the old input format was, then the output could be recycled. The
* input pipeline however would need to be restarted. */
/* No recycling: delete everything and restart from scratch */
aout_Shutdown (p_aout);
}
#endif
int ret = 0;
/* TODO: reduce lock scope depending on decoder's real need */
aout_lock( p_aout );
assert (owner->module == NULL);
/* Create the audio output stream */
var_Destroy( p_aout, "audio-device" );
var_Destroy( p_aout, "audio-channels" );
owner->input_format = *p_format;
vlc_atomic_set (&owner->restart, 0);
if( aout_OutputNew( p_aout, p_format ) < 0 )
{
ret = -1;
goto error;
}
/* Allocate a software mixer */
assert (owner->volume.mixer == NULL);
owner->volume.mixer = aout_MixerNew (p_aout, owner->mixer_format.i_format);
aout_ReplayGainInit (&owner->gain.data, p_replay_gain);
var_AddCallback (p_aout, "audio-replay-gain-mode",
ReplayGainCallback, owner);
var_TriggerCallback (p_aout, "audio-replay-gain-mode");
/* Create the audio filtering "input" pipeline */
date_Init (&owner->sync.date, owner->mixer_format.i_rate, 1);
date_Set (&owner->sync.date, VLC_TS_INVALID);
assert (owner->input == NULL);
owner->input = aout_InputNew (p_aout, p_format, &owner->mixer_format,
p_request_vout);
if (owner->input == NULL)
{
struct audio_mixer *mixer = owner->volume.mixer;
owner->volume.mixer = NULL;
aout_OutputDelete (p_aout);
aout_unlock (p_aout);
aout_MixerDelete (mixer);
return -1;
}
error:
aout_unlock( p_aout );
return ret;
}
/*****************************************************************************
* aout_InputNew : allocate a new input and rework the filter pipeline
*****************************************************************************/
int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input )
{
audio_sample_format_t chain_input_format;
audio_sample_format_t chain_output_format;
vlc_value_t val, text;
char * psz_filters, *psz_visual;
int i_visual;
aout_FormatPrint( p_aout, "input", &p_input->input );
p_input->i_nb_filters = 0;
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_input->fifo, p_aout->mixer.mixer.i_rate );
p_input->p_first_byte_to_mix = NULL;
/* Prepare format structure */
memcpy( &chain_input_format, &p_input->input,
sizeof(audio_sample_format_t) );
memcpy( &chain_output_format, &p_aout->mixer.mixer,
sizeof(audio_sample_format_t) );
chain_output_format.i_rate = p_input->input.i_rate;
aout_FormatPrepare( &chain_output_format );
/* Now add user filters */
if( var_Type( p_aout, "visual" ) == 0 )
{
module_t *p_module;
var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Visualizations");
var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = ""; text.psz_string = _("Disable");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "spectrometer"; text.psz_string = _("Spectrometer");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "scope"; text.psz_string = _("Scope");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "spectrum"; text.psz_string = _("Spectrum");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
/* Look for goom plugin */
p_module = config_FindModule( VLC_OBJECT(p_aout), "goom" );
if( p_module )
{
val.psz_string = "goom"; text.psz_string = "Goom";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
/* Look for galaktos plugin */
p_module = config_FindModule( VLC_OBJECT(p_aout), "galaktos" );
if( p_module )
{
val.psz_string = "galaktos"; text.psz_string = "GaLaktos";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
{
var_Set( p_aout, "visual", val );
if( val.psz_string ) free( val.psz_string );
}
var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
}
if( var_Type( p_aout, "equalizer" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "equalizer",
VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Equalizer");
var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = ""; text.psz_string = _("Disable");
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = p_config->ppsz_list[i];
text.psz_string = p_config->ppsz_list_text[i];
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
}
}
if( var_Type( p_aout, "audio-filter" ) == 0 )
{
var_Create( p_aout, "audio-filter",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio filters");
var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-visual" ) == 0 )
{
var_Create( p_aout, "audio-visual",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio visualizations");
var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
}
var_Get( p_aout, "audio-filter", &val );
psz_filters = val.psz_string;
var_Get( p_aout, "audio-visual", &val );
psz_visual = val.psz_string;
/* parse user filter lists */
for( i_visual = 0; i_visual < 2; i_visual++ )
{
char *psz_next = NULL;
char *psz_parser = i_visual ? psz_visual : psz_filters;
if( psz_parser == NULL || !*psz_parser )
continue;
while( psz_parser && *psz_parser )
{
aout_filter_t * p_filter = NULL;
if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
{
msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
break;
}
while( *psz_parser == ' ' && *psz_parser == ':' )
{
psz_parser++;
}
if( ( psz_next = strchr( psz_parser , ':' ) ) )
{
*psz_next++ = '\0';
}
if( *psz_parser =='\0' )
{
break;
}
/* Create a VLC object */
p_filter = vlc_object_create( p_aout, sizeof(aout_filter_t) );
if( p_filter == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
psz_parser = psz_next;
continue;
}
vlc_object_attach( p_filter , p_aout );
/* try to find the requested filter */
if( i_visual == 1 ) /* this can only be a visualization module */
{
/* request format */
memcpy( &p_filter->input, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter, "visualization",
psz_parser, VLC_TRUE );
}
else /* this can be a audio filter module as well as a visualization module */
{
/* request format */
memcpy( &p_filter->input, &chain_input_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter, "audio filter",
psz_parser, VLC_TRUE );
if ( p_filter->p_module == NULL )
{
/* if the filter requested a special format, retry */
if ( !( AOUT_FMTS_IDENTICAL( &p_filter->input,
&chain_input_format )
&& AOUT_FMTS_IDENTICAL( &p_filter->output,
&chain_output_format ) ) )
{
aout_FormatPrepare( &p_filter->input );
aout_FormatPrepare( &p_filter->output );
p_filter->p_module = module_Need( p_filter,
"audio filter",
psz_parser, VLC_TRUE );
}
/* try visual filters */
else
{
memcpy( &p_filter->input, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter,
"visualization",
psz_parser, VLC_TRUE );
}
}
}
/* failure */
if ( p_filter->p_module == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
vlc_object_detach( p_filter );
vlc_object_destroy( p_filter );
psz_parser = psz_next;
continue;
}
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &p_filter->input ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&p_filter->input ) < 0 )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
module_Unneed( p_filter, p_filter->p_module );
vlc_object_detach( p_filter );
vlc_object_destroy( p_filter );
psz_parser = psz_next;
continue;
}
}
/* success */
p_filter->b_continuity = VLC_FALSE;
p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
memcpy( &chain_input_format, &p_filter->output,
sizeof( audio_sample_format_t ) );
/* next filter if any */
psz_parser = psz_next;
}
}
if( psz_filters ) free( psz_filters );
if( psz_visual ) free( psz_visual );
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&chain_output_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
return -1;
}
}
/* Prepare hints for the buffer allocator. */
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
p_input->input_alloc.i_bytes_per_sec = -1;
/* Create resamplers. */
if ( AOUT_FMT_NON_LINEAR( &p_aout->mixer.mixer ) )
{
p_input->i_nb_resamplers = 0;
}
else
{
chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
p_aout->mixer.mixer.i_rate)
* (100 + AOUT_MAX_RESAMPLING)) / 100;
if ( chain_output_format.i_rate == p_aout->mixer.mixer.i_rate )
{
/* Just in case... */
chain_output_format.i_rate++;
}
p_input->i_nb_resamplers = 0;
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
&p_input->i_nb_resamplers,
&chain_output_format,
&p_aout->mixer.mixer ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
return -1;
}
aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
p_input->i_nb_resamplers,
&p_input->input_alloc );
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
/* Setup the initial rate of the resampler */
p_input->pp_resamplers[0]->input.i_rate = p_input->input.i_rate;
}
p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
p_input->i_nb_filters,
&p_input->input_alloc );
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
/* i_bytes_per_sec is still == -1 if no filters */
p_input->input_alloc.i_bytes_per_sec = __MAX(
p_input->input_alloc.i_bytes_per_sec,
(int)(p_input->input.i_bytes_per_frame
* p_input->input.i_rate
/ p_input->input.i_frame_length) );
/* Success */
p_input->b_error = VLC_FALSE;
p_input->b_restart = VLC_FALSE;
return 0;
}
