C++ (Cpp) init_iir示例

示例#1

文件： eq.cpp 项目： electricface/interesting-algotitum

void   init_equliazer(int nBand)
{
	if(nBand != 0 && nBand < EQ_MAX_BANDS)
	{
		//nBand = nBand;
	}
	else
	{
		nBand = 10;
	}
    init_iir(nBand);
}

示例#2

文件： eq.c 项目： mantaraya36/xmms2-mantaraya36

static gboolean
xmms_eq_init (xmms_xform_t *xform)
{
	xmms_equalizer_data_t *priv;
	xmms_config_property_t *config;
	gint i, j, srate;
	gfloat gain;

	g_return_val_if_fail (xform, FALSE);

	priv = g_new0 (xmms_equalizer_data_t, 1);
	g_return_val_if_fail (priv, FALSE);

	xmms_xform_private_data_set (xform, priv);

	config = xmms_xform_config_lookup (xform, "enabled");
	g_return_val_if_fail (config, FALSE);
	xmms_config_property_callback_set (config, xmms_eq_config_changed, priv);
	priv->enabled = !!xmms_config_property_get_int (config);

	config = xmms_xform_config_lookup (xform, "bands");
	g_return_val_if_fail (config, FALSE);
	xmms_config_property_callback_set (config, xmms_eq_config_changed, priv);
	priv->bands = xmms_config_property_get_int (config);

	config = xmms_xform_config_lookup (xform, "extra_filtering");
	g_return_val_if_fail (config, FALSE);
	xmms_config_property_callback_set (config, xmms_eq_config_changed, priv);
	priv->extra_filtering = xmms_config_property_get_int (config);

	config = xmms_xform_config_lookup (xform, "use_legacy");
	g_return_val_if_fail (config, FALSE);
	xmms_config_property_callback_set (config, xmms_eq_config_changed, priv);
	priv->use_legacy = xmms_config_property_get_int (config);

	config = xmms_xform_config_lookup (xform, "preamp");
	g_return_val_if_fail (config, FALSE);
	xmms_config_property_callback_set (config, xmms_eq_gain_changed, priv);
	gain = xmms_config_property_get_float (config);

	for (i=0; i<EQ_CHANNELS; i++) {
		set_preamp (i, xmms_eq_gain_scale (gain, TRUE));
	}

	for (i=0; i<EQ_BANDS_LEGACY; i++) {
		gchar buf[16];

		g_snprintf (buf, sizeof (buf), "legacy%d", i);
		config = xmms_xform_config_lookup (xform, buf);
		g_return_val_if_fail (config, FALSE);

		priv->legacy[i] = config;
		xmms_config_property_callback_set (config, xmms_eq_gain_changed, priv);

		gain = xmms_config_property_get_float (config);
		if (priv->use_legacy) {
			for (j = 0; j < EQ_CHANNELS; j++) {
				set_gain (i, j, xmms_eq_gain_scale (gain, FALSE));
			}
		}
	}

	for (i=0; i<EQ_MAX_BANDS; i++) {
		gchar buf[16];

		g_snprintf (buf, sizeof (buf), "gain%02d", i);
		config = xmms_xform_config_lookup (xform, buf);
		g_return_val_if_fail (config, FALSE);

		priv->gain[i] = config;
		xmms_config_property_callback_set (config, xmms_eq_gain_changed, priv);

		gain = xmms_config_property_get_float (config);
		if (!priv->use_legacy) {
			for (j = 0; j < EQ_CHANNELS; j++) {
				set_gain (i, j, xmms_eq_gain_scale (gain, FALSE));
			}
		}
	}

	init_iir ();
	srate = xmms_xform_indata_get_int (xform, XMMS_STREAM_TYPE_FMT_SAMPLERATE);
	if (priv->use_legacy) {
		config_iir (srate, EQ_BANDS_LEGACY, 1);
	} else {
		config_iir (srate, priv->bands, 0);
	}

	xmms_xform_outdata_type_copy (xform);

	XMMS_DBG ("Equalizer initialized successfully!");

	return TRUE;
}

示例#3

文件： libwavpack.cpp 项目： sebastinas/WavPack

static void
wv_set_eq(int on, float preamp_ctrl, float *eq_ctrl)
{
    EQ_on = on;
    init_iir(EQ_on, preamp_ctrl, eq_ctrl);
}