SonivoxVoiceDescription.java
/*
* Copyright 2023 The Android Open Source 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 androidx.media3.decoder.midi;
import android.content.Context;
import androidx.media3.common.util.UnstableApi;
import com.jsyn.unitgen.UnitVoice;
import com.jsyn.util.VoiceDescription;
import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
/** Synthesizer voice description, used for obtaining {@link SonivoxSynthVoice} instances. */
@UnstableApi
/* package */ final class SonivoxVoiceDescription extends VoiceDescription {
private static final String VOICE_CLASS_NAME = "SonivoxVoiceDescription";
private static final String[] tags = {"wavetable", "GM2", "ringtone"};
private static final Object LOCK = new Object();
private static @MonotonicNonNull SonivoxVoiceDescription instance;
public static SonivoxVoiceDescription getInstance(Context context) throws MidiDecoderException {
synchronized (LOCK) {
if (instance == null) {
instance = new SonivoxVoiceDescription(SonivoxWaveData.loadWaveTableData(context));
}
return instance;
}
}
private final short[] waveTableData;
private SonivoxVoiceDescription(short[] waveTableData) {
super(VOICE_CLASS_NAME, SonivoxWaveData.getProgramNames());
this.waveTableData = waveTableData;
}
@Override
public UnitVoice createUnitVoice() {
// We must return a new instance every time.
return new SonivoxSynthVoice(waveTableData);
}
@Override
public String[] getTags(int presetIndex) {
return tags;
}
@Override
public String getVoiceClassName() {
return VOICE_CLASS_NAME;
}
}