1 files changed, 135 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/audiofx/backends/EffectSetWithAndroidEq.java b/src/org/cyanogenmod/audiofx/backends/EffectSetWithAndroidEq.java
new file mode 100644
index 0000000..42d1cca
--- /dev/null
+++ b/src/org/cyanogenmod/audiofx/backends/EffectSetWithAndroidEq.java
@@ -0,0 +1,135 @@
+/*
+ * 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);
+        }
+    }
+}