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/*
* Copyright (C) 2016 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.cyanogenmod.audiofx.backends;
import android.media.AudioDeviceInfo;
import android.media.audiofx.Equalizer;
import android.util.Log;
import org.cyanogenmod.audiofx.eq.EqUtils;
public abstract class EffectSetWithAndroidEq extends EffectSet {
/**
* Session-specific equalizer
*/
private Equalizer mEqualizer;
private short mEqNumPresets = -1;
private short mEqNumBands = -1;
public EffectSetWithAndroidEq(int sessionId, AudioDeviceInfo deviceInfo) {
super(sessionId, deviceInfo);
}
@Override
protected void onCreate() {
mEqualizer = new Equalizer(100, mSessionId);
super.onCreate();
}
@Override
public synchronized void release() {
if (mEqualizer != null) {
mEqualizer.release();
mEqualizer = null;
}
super.release();
}
@Override
public void setGlobalEnabled(boolean globalEnabled) {
super.setGlobalEnabled(globalEnabled);
enableEqualizer(globalEnabled);
}
@Override
public void enableEqualizer(boolean enable) {
try {
mEqualizer.setEnabled(enable);
} catch (Exception e) {
Log.e(TAG, "enableEqualizer failed! enable=" + enable + " sessionId=" + mSessionId, e);
}
}
@Override
public void setEqualizerLevelsDecibels(float[] levels) {
final short[] equalizerLevels = EqUtils.convertDecibelsToMillibelsInShorts(levels);
for (short i = 0; i < equalizerLevels.length; i++) {
setBandLevelSafe(i, equalizerLevels[i]);
}
}
@Override
public short getNumEqualizerBands() {
if (mEqNumBands < 0) {
mEqNumBands = mEqualizer.getNumberOfBands();
}
return mEqNumBands;
}
@Override
public void setEqualizerBandLevel(short band, float level) {
setBandLevelSafe(band, (short)level);
}
@Override
public int getEqualizerBandLevel(short band) {
return mEqualizer.getBandLevel(band);
}
@Override
public String getEqualizerPresetName(short preset) {
return mEqualizer.getPresetName(preset);
}
@Override
public void useEqualizerPreset(short preset) {
mEqualizer.usePreset(preset);
}
@Override
public short getNumEqualizerPresets() {
if (mEqNumPresets < 0) {
mEqNumPresets = mEqualizer.getNumberOfPresets();
}
return mEqNumPresets;
}
@Override
public short[] getEqualizerBandLevelRange() {
return mEqualizer.getBandLevelRange();
}
@Override
public int getCenterFrequency(short band) {
return mEqualizer.getCenterFreq(band);
}
@Override
public synchronized void setDevice(AudioDeviceInfo deviceInfo) {
super.setDevice(deviceInfo);
}
private synchronized void setBandLevelSafe(short band, short level) {
try {
mEqualizer.setBandLevel(band, level);
} catch (Exception e) {
Log.e(TAG, "Unable to set eq band=" + band + " level=" + level, e);
}
}
}
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