volume.c File Reference

Include dependency graph for volume.c:

Data Structures
struct	aout_volume

Functions
static int	ReplayGainCallback (vlc_object_t *, char const *, vlc_value_t, vlc_value_t, void *)
aout_volume_t *	aout_volume_New (vlc_object_t *parent, const audio_replay_gain_t *gain)
	Creates a software amplifier.
int	aout_volume_SetFormat (aout_volume_t *vol, vlc_fourcc_t format)
	Selects the current sample format for software amplification.
void	aout_volume_Delete (aout_volume_t *vol)
	Destroys a software amplifier.
void	aout_volume_SetVolume (aout_volume_t *vol, float factor)
int	aout_volume_Amplify (aout_volume_t *vol, block_t *block)
	Applies replay gain and software volume to an audio buffer.
static float	aout_ReplayGainSelect (vlc_object_t *obj, const char *str, const audio_replay_gain_t *replay_gain)

Function Documentation

aout_ReplayGainSelect()

static float aout_ReplayGainSelect ( vlc_object_t *  obj, const char *  str, const audio_replay_gain_t *  replay_gain  )

static

References AUDIO_REPLAY_GAIN_ALBUM, AUDIO_REPLAY_GAIN_MAX, AUDIO_REPLAY_GAIN_TRACK, likely, audio_replay_gain_t::pb_gain, audio_replay_gain_t::pb_peak, audio_replay_gain_t::pf_gain, audio_replay_gain_t::pf_peak, var_InheritBool(), and var_InheritFloat().

Referenced by ReplayGainCallback().

aout_volume_Amplify()

int aout_volume_Amplify	(	aout_volume_t *	vol,
		block_t *	block
	)

Applies replay gain and software volume to an audio buffer.

References audio_volume::amplify, aout_volume::gain_factor, aout_volume::object, and aout_volume::output_factor.

Referenced by vlc_aout_stream_Play().

aout_volume_Delete()

void aout_volume_Delete

(

aout_volume_t *

vol

)

Destroys a software amplifier.

References module_unneed, aout_volume::object, ReplayGainCallback(), var_DelCallback(), vlc_object_delete, and vlc_object_parent.

Referenced by vlc_aout_stream_Delete(), and vlc_aout_stream_New().

aout_volume_New()

aout_volume_t * aout_volume_New	(	vlc_object_t *	parent,
		const audio_replay_gain_t *	gain
	)

Creates a software amplifier.

References aout_volume::gain_factor, aout_volume::output_factor, aout_volume::replay_gain, ReplayGainCallback(), unlikely, var_AddCallback(), var_TriggerCallback(), and vlc_custom_create.

aout_volume_SetFormat()

int aout_volume_SetFormat	(	aout_volume_t *	vol,
		vlc_fourcc_t	format
	)

Selects the current sample format for software amplification.

References audio_volume::format, module_need, module_unneed, msg_Dbg, and aout_volume::object.

Referenced by stream_CheckReady(), and vlc_aout_stream_New().

aout_volume_SetVolume()

void aout_volume_SetVolume	(	aout_volume_t *	vol,
		float	factor
	)

References aout_volume::output_factor.

Referenced by vlc_aout_stream_NotifyGain().

ReplayGainCallback()

static int ReplayGainCallback ( vlc_object_t *  obj, char const *  var, vlc_value_t  oldval, vlc_value_t  val, void *  data  )

static

References aout_ReplayGainSelect(), aout_volume::gain_factor, vlc_value_t::psz_string, aout_volume::replay_gain, var, VLC_SUCCESS, and VLC_UNUSED.

Referenced by aout_volume_Delete(), and aout_volume_New().