equalizer.c File Reference

#include <glib.h>
#include <math.h>
#include <string.h>
#include <libaudcore/hook.h>
#include "audconfig.h"
#include "equalizer.h"

Go to the source code of this file.

Defines
#define	EQ_BANDS   AUD_EQUALIZER_NBANDS
#define	MAX_CHANNELS   10
#define	Q   1.2247449
Functions
static void	bp2 (gfloat *a, gfloat *b, gfloat fc, gfloat q)
void	eq_set_format (gint new_channels, gint new_rate)
static void	eq_set_channel_bands (gint channel, gfloat *bands)
static void	eq_set_bands (gfloat preamp, gfloat *bands)
void	eq_filter (gfloat *data, gint samples)
static void	eq_update (void *data, void *user_data)
void	eq_init (void)
Variables
static const gfloat	CF [EQ_BANDS]
static GStaticMutex	mutex = G_STATIC_MUTEX_INIT
static gboolean	active
static gint	channels
static gint	rate
static gfloat	a [EQ_BANDS][2]
static gfloat	b [EQ_BANDS][2]
static gfloat	wqv [MAX_CHANNELS][EQ_BANDS][2]
static gfloat	gv [MAX_CHANNELS][EQ_BANDS]
static gint	K

---

Define Documentation

#define EQ_BANDS   AUD_EQUALIZER_NBANDS

Definition at line 23 of file equalizer.c.

#define MAX_CHANNELS   10

Definition at line 24 of file equalizer.c.

#define Q   1.2247449

Definition at line 28 of file equalizer.c.

Referenced by eq_set_format().

---

Function Documentation

static void bp2	(	gfloat *	a,
		gfloat *	b,
		gfloat	fc,
		gfloat	q
	)			[static]

Definition at line 47 of file equalizer.c.

Referenced by eq_set_format().

void eq_filter	(	gfloat *	data,
		gint	samples
	)

Definition at line 103 of file equalizer.c.

Referenced by do_write().

void eq_init

(

void

)

Definition at line 159 of file equalizer.c.

Referenced by main().

static void eq_set_bands	(	gfloat	preamp,
		gfloat *	bands
	)			[static]

Definition at line 91 of file equalizer.c.

Referenced by eq_update().

static void eq_set_channel_bands	(	gint	channel,
		gfloat *	bands
	)			[static]

Definition at line 83 of file equalizer.c.

Referenced by eq_set_bands().

void eq_set_format	(	gint	new_channels,
		gint	new_rate
	)

Definition at line 58 of file equalizer.c.

Referenced by output_open_audio().

static void eq_update	(	void *	data,
		void *	user_data
	)			[static]

Definition at line 149 of file equalizer.c.

Referenced by eq_init().

---

Variable Documentation

gfloat a[EQ_BANDS][2] [static]

Definition at line 40 of file equalizer.c.

Referenced by aud_md5_transform(), eq_filter(), eq_set_format(), filename_compare(), playlist_remove_duplicates_by_scheme(), string_compare(), string_compare_encoded(), and tuple_compare().

gboolean active [static]

Definition at line 38 of file equalizer.c.

Referenced by eq_filter(), and eq_update().

gfloat b[EQ_BANDS][2] [static]

Definition at line 41 of file equalizer.c.

Referenced by aud_md5_transform(), audacious_remote_set_main_volume(), eq_filter(), eq_set_format(), filename_compare(), playlist_remove_duplicates_by_scheme(), string_compare(), string_compare_encoded(), and tuple_compare().

const gfloat CF[EQ_BANDS] [static]

Initial value:

 {31.25, 62.5, 125, 250, 500, 1000, 2000,
 4000, 8000, 16000}

Definition at line 34 of file equalizer.c.

Referenced by eq_set_format().

gint channels [static]

Definition at line 39 of file equalizer.c.

Referenced by effect_insert(), eq_filter(), and eq_set_format().

gfloat gv[MAX_CHANNELS][EQ_BANDS] [static]

Definition at line 43 of file equalizer.c.

Referenced by eq_filter(), and eq_set_channel_bands().

gint K [static]

Definition at line 44 of file equalizer.c.

Referenced by eq_filter(), and eq_set_format().

GStaticMutex mutex = G_STATIC_MUTEX_INIT [static]

Definition at line 37 of file equalizer.c.

Referenced by eq_filter(), eq_set_format(), eq_update(), send_audio(), send_clear(), vis_runner_add_hook(), vis_runner_flush(), vis_runner_pass_audio(), vis_runner_remove_hook(), vis_runner_start_stop(), and vis_runner_time_offset().

gint rate [static]

Definition at line 39 of file equalizer.c.

Referenced by effect_insert(), and eq_set_format().

gfloat wqv[MAX_CHANNELS][EQ_BANDS][2] [static]

Definition at line 42 of file equalizer.c.

Referenced by eq_filter(), and eq_set_format().