filters.c File Reference

Include dependency graph for filters.c:

Macros
#define	aout_FiltersPipelineCreate(obj, f, n, m, i, o)   aout_FiltersPipelineCreate(VLC_OBJECT(obj),f,n,m,i,o)

Functions
static filter_t *	FindFilter (vlc_object_t *obj, const char *type, const char *name, const audio_sample_format_t *infmt, const audio_sample_format_t *outfmt)
static filter_t *	FindConverter (vlc_object_t *obj, const audio_sample_format_t *infmt, const audio_sample_format_t *outfmt)
static filter_t *	FindResampler (vlc_object_t *obj, const audio_sample_format_t *infmt, const audio_sample_format_t *outfmt)
static void	aout_FiltersPipelineDestroy (filter_t *const *filters, unsigned n)
	Destroys a chain of audio filters.
static filter_t *	TryFormat (vlc_object_t *obj, vlc_fourcc_t codec, audio_sample_format_t *restrict fmt)
static int	aout_FiltersPipelineCreate (vlc_object_t *obj, filter_t **filters, unsigned *count, unsigned max, const audio_sample_format_t *restrict infmt, const audio_sample_format_t *restrict outfmt)
	Allocates audio format conversion filters.
static bool	ChangeFiltersString (vlc_object_t *aout, const char *var, const char *filter, bool add)
static block_t *	aout_FiltersPipelinePlay (filter_t *const *filters, unsigned count, block_t *block)
	Filters an audio buffer through a chain of filters.
static int	VisualizationCallback (vlc_object_t *obj, char const *var, vlc_value_t oldval, vlc_value_t newval, void *data)
	Callback for visualization selection.
static int	EqualizerCallback (vlc_object_t *obj, char const *var, vlc_value_t oldval, vlc_value_t newval, void *data)
static vout_thread_t *	RequestVout (void *data, vout_thread_t *vout, video_format_t *fmt, bool recycle)
vout_thread_t *	aout_filter_RequestVout (filter_t *filter, vout_thread_t *vout, video_format_t *fmt)
static filter_t *	CreateFilter (vlc_object_t *parent, const char *name, const audio_sample_format_t *restrict infmt, const audio_sample_format_t *restrict outfmt, bool visu)
int	aout_FiltersNew (audio_output_t *aout, const audio_sample_format_t *restrict infmt, const audio_sample_format_t *restrict outfmt, const aout_request_vout_t *request_vout)
	Sets up the audio filters.
void	aout_FiltersDelete (audio_output_t *aout)
	Destroys the audio filters.
bool	aout_FiltersAdjustResampling (audio_output_t *aout, int adjust)
block_t *	aout_FiltersPlay (audio_output_t *aout, block_t *block, int rate)

Macro Definition Documentation

#define aout_FiltersPipelineCreate	(		obj,
			f,
			n,
			m,
			i,
			o
	)		aout_FiltersPipelineCreate(VLC_OBJECT(obj),f,n,m,i,o)

Referenced by aout_FiltersNew().

Function Documentation

vout_thread_t* aout_filter_RequestVout	(	filter_t *	filter,
		vout_thread_t *	vout,
		video_format_t *	fmt
	)

References aout_owner(), filter_t::p_parent, aout_request_vout_t::p_private, aout_request_vout_t::pf_request_vout, aout_owner_t::recycle_vout, and aout_owner_t::request_vout.

bool aout_FiltersAdjustResampling	(	audio_output_t *	aout,
		int	adjust
	)

References aout_owner(), aout_owner_t::resampler, and aout_owner_t::resampling.

Referenced by aout_DecSynchronize(), and aout_StopResampling().

void aout_FiltersDelete

(

audio_output_t *

aout

)

Destroys the audio filters.

References aout_FiltersPipelineDestroy(), aout_owner(), EqualizerCallback(), aout_owner_t::filters, aout_owner_t::nb_filters, aout_owner_t::recycle_vout, aout_owner_t::resampler, var_DelCallback, var_InheritString, and VisualizationCallback().

Referenced by aout_CheckReady(), and aout_DecDelete().

int aout_FiltersNew	(	audio_output_t *	aout,
		const audio_sample_format_t *restrict	infmt,
		const audio_sample_format_t *restrict	outfmt,
		const aout_request_vout_t *	request_vout
	)

Sets up the audio filters.

References aout_FiltersPipelineCreate, aout_FiltersPipelineDestroy(), AOUT_FMT_LINEAR, AOUT_FMTS_IDENTICAL, aout_FormatPrint, aout_FormatsPrint, AOUT_MAX_FILTERS, aout_owner(), es_format_t::audio, CreateFilter(), EqualizerCallback(), aout_owner_t::filters, FindConverter(), FindResampler(), filter_t::fmt_in, filter_t::fmt_out, audio_format_t::i_rate, list, module_unneed, msg_Err, name, aout_owner_t::nb_filters, filter_t::p_module, aout_request_vout_t::p_private, aout_request_vout_t::pf_request_vout, aout_owner_t::rate_filter, aout_owner_t::recycle_vout, aout_owner_t::request_vout, RequestVout(), aout_owner_t::resampler, aout_owner_t::resampling, strsep(), var_AddCallback, var_DelCallback, var_InheritBool, var_InheritString, VisualizationCallback(), VLC_OBJECT, and vlc_object_release.

static int aout_FiltersPipelineCreate ( vlc_object_t *  obj, filter_t **  filters, unsigned *  count, unsigned  max, const audio_sample_format_t *restrict  infmt, const audio_sample_format_t *restrict  outfmt  )

static

Allocates audio format conversion filters.

Parameters

obj	parent VLC object for new filters
filters	table of filters [IN/OUT]
count	pointer to the number of filters in the table [IN/OUT]
max	size of filters table [IN]
infmt	input audio format
outfmt	output audio format

Returns

0 on success, -1 on failure

References _, aout_FiltersPipelineDestroy(), AOUT_FMT_LINEAR, aout_FormatPrepare(), aout_FormatsPrint, count, dialog_Fatal, FindConverter(), audio_format_t::i_format, audio_format_t::i_original_channels, audio_format_t::i_physical_channels, audio_format_t::i_rate, msg_Dbg, msg_Err, TryFormat(), VLC_CODEC_FL32, and VLC_CODEC_S32N.

static void aout_FiltersPipelineDestroy ( filter_t *const *  filters, unsigned  n  )

static

Destroys a chain of audio filters.

References module_unneed, filter_t::p_module, and vlc_object_release.

Referenced by aout_FiltersDelete(), aout_FiltersNew(), and aout_FiltersPipelineCreate().

static block_t* aout_FiltersPipelinePlay ( filter_t *const *  filters, unsigned  count, block_t *  block  )

static

Filters an audio buffer through a chain of filters.

References count.

Referenced by aout_FiltersPlay().

block_t* aout_FiltersPlay	(	audio_output_t *	aout,
		block_t *	block,
		int	rate
	)

References aout_FiltersPipelinePlay(), aout_owner(), es_format_t::audio, block_Release(), aout_owner_t::filters, filter_t::fmt_in, audio_format_t::i_rate, INPUT_RATE_DEFAULT, aout_owner_t::nb_filters, aout_owner_t::rate_filter, aout_owner_t::resampler, and aout_owner_t::resampling.

Referenced by aout_DecPlay().

static bool ChangeFiltersString ( vlc_object_t *  aout, const char *  var, const char *  filter, bool  add  )

inlinestatic

References aout_ChangeFilterString().

Referenced by EqualizerCallback(), and VisualizationCallback().

static filter_t* CreateFilter ( vlc_object_t *  parent, const char *  name, const audio_sample_format_t *restrict  infmt, const audio_sample_format_t *restrict  outfmt, bool  visu  )

static

References AOUT_FMTS_IDENTICAL, es_format_t::audio, filter_t::fmt_in, filter_t::fmt_out, es_format_t::i_codec, module_need, filter_t::p_module, unlikely, vlc_custom_create, and vlc_object_release.

Referenced by aout_FiltersNew().

static int EqualizerCallback ( vlc_object_t *  obj, char const *  var, vlc_value_t  oldval, vlc_value_t  newval, void *  data  )

static

< No error

References aout_InputRequestRestart(), ChangeFiltersString(), vlc_value_t::psz_string, var_Create, var_SetString, VLC_SUCCESS, and VLC_VAR_STRING.

Referenced by aout_FiltersDelete(), and aout_FiltersNew().

static filter_t* FindConverter ( vlc_object_t *  obj, const audio_sample_format_t *  infmt, const audio_sample_format_t *  outfmt  )

static

References FindFilter().

Referenced by aout_FiltersNew(), aout_FiltersPipelineCreate(), and TryFormat().

static filter_t* FindFilter ( vlc_object_t *  obj, const char *  type, const char *  name, const audio_sample_format_t *  infmt, const audio_sample_format_t *  outfmt  )

static

References es_format_t::audio, filter_t::fmt_in, filter_t::fmt_out, es_format_t::i_codec, audio_format_t::i_format, module_need, filter_t::p_module, unlikely, vlc_custom_create, and vlc_object_release.

Referenced by FindConverter(), and FindResampler().

static filter_t* FindResampler ( vlc_object_t *  obj, const audio_sample_format_t *  infmt, const audio_sample_format_t *  outfmt  )

static

References FindFilter().

Referenced by aout_FiltersNew().

static vout_thread_t* RequestVout ( void *  data, vout_thread_t *  vout, video_format_t *  fmt, bool  recycle  )

static

References vout_configuration_t::vout, and vout_Request.

Referenced by aout_FiltersNew().

static filter_t* TryFormat ( vlc_object_t *  obj, vlc_fourcc_t  codec, audio_sample_format_t *restrict  fmt  )

static

References aout_FormatPrepare(), FindConverter(), and audio_format_t::i_format.

Referenced by aout_FiltersPipelineCreate().

static int VisualizationCallback ( vlc_object_t *  obj, char const *  var, vlc_value_t  oldval, vlc_value_t  newval, void *  data  )

static

Callback for visualization selection.

< No error

References aout_InputRequestRestart(), ChangeFiltersString(), vlc_value_t::psz_string, var_Create, var_SetString, VLC_SUCCESS, and VLC_VAR_STRING.

Referenced by aout_FiltersDelete(), and aout_FiltersNew().