/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* 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 com.badlogic.gdx.backends.android;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import com.badlogic.gdx.audio.AudioRecorder;
import com.badlogic.gdx.utils.GdxRuntimeException;
/** {@link AudioRecorder} implementation for the android system based on AudioRecord
* @author badlogicgames@gmail.com */
public class AndroidAudioRecorder implements AudioRecorder {
/** the audio track we read samples from **/
private AudioRecord recorder;
public AndroidAudioRecorder (int samplingRate, boolean isMono) {
int channelConfig = isMono ? AudioFormat.CHANNEL_IN_MONO : AudioFormat.CHANNEL_IN_STEREO;
int minBufferSize = AudioRecord.getMinBufferSize(samplingRate, channelConfig, AudioFormat.ENCODING_PCM_16BIT);
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, samplingRate, channelConfig, AudioFormat.ENCODING_PCM_16BIT,
minBufferSize);
if (recorder.getState() != AudioRecord.STATE_INITIALIZED)
throw new GdxRuntimeException("Unable to initialize AudioRecorder.\nDo you have the RECORD_AUDIO permission?");
recorder.startRecording();
}
@Override
public void dispose () {
recorder.stop();
recorder.release();
}
@Override
public void read (short[] samples, int offset, int numSamples) {
int read = 0;
while (read != numSamples) {
read += recorder.read(samples, offset + read, numSamples - read);
}
}
}