/**
 * Copyright 2017 Kailash Dabhi (Kingbull Technology)
 *
 * 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 omrecorder;

import android.media.AudioFormat;

/**
 * This is an interface to configure the {@link Source}
 *
 * @author Kailash Dabhi
 * @date 06-07-2016
 */
public interface AudioRecordConfig {
  int channelPositionMask();

  int audioSource();

  /**
   * @return sampleRateInHz
   */
  int frequency();

  int audioEncoding();

  byte bitsPerSample();

  /**
   * Application should use this default implementation of {@link AudioRecordConfig} to configure
   * the Audio Record Source.
   */
  class Default implements AudioRecordConfig {
    private final int audioSource;
    private final int channelPositionMask;
    private final int frequency;
    private final int audioEncoding;

    public Default(int audioSource, int audioEncoding, int channelPositionMask, int frequency) {
      this.audioSource = audioSource;
      this.audioEncoding = audioEncoding;
      this.channelPositionMask = channelPositionMask;
      this.frequency = frequency;
    }

    @Override public int channelPositionMask() {
      return channelPositionMask;
    }

    @Override public int audioSource() {
      return audioSource;
    }

    @Override public int frequency() {
      return frequency;
    }

    @Override public int audioEncoding() {
      return audioEncoding;
    }

    @Override public byte bitsPerSample() {
      if (audioEncoding == AudioFormat.ENCODING_PCM_16BIT) {
        return 16;
      } else if (audioEncoding == AudioFormat.ENCODING_PCM_8BIT) {
        return 8;
      } else {
        return 16;
      }
    }
  }
}