content: /*
   * Copyright (C) 2017 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 com.google.android.exoplayer2;
  
  import com.google.android.exoplayer2.util.Assertions;
  
  /**
   * The parameters that apply to playback.
   */
  public final class PlaybackParameters {
  
    /**
     * The default playback parameters: real-time playback with no pitch modification.
     */
    public static final PlaybackParameters DEFAULT = new PlaybackParameters(1f, 1f);
  
    /**
     * The factor by which playback will be sped up.
     */
    public final float speed;
  
    /**
     * The factor by which the audio pitch will be scaled.
     */
    public final float pitch;
  
    private final int scaledUsPerMs;
  
    /**
     * Creates new playback parameters.
     *
     * @param speed The factor by which playback will be sped up. Must be greater than zero.
     * @param pitch The factor by which the audio pitch will be scaled. Must be greater than zero.
     */
    public PlaybackParameters(float speed, float pitch) {
      Assertions.checkArgument(speed > 0);
      Assertions.checkArgument(pitch > 0);
      this.speed = speed;
      this.pitch = pitch;
      scaledUsPerMs = Math.round(speed * 1000f);
    }
  
    /**
     * Returns the media time in microseconds that will elapse in {@code timeMs} milliseconds of
     * wallclock time.
     *
     * @param timeMs The time to scale, in milliseconds.
     * @return The scaled time, in microseconds.
     */
    public long getMediaTimeUsForPlayoutTimeMs(long timeMs) {
      return timeMs * scaledUsPerMs;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
      if (obj == null || getClass() != obj.getClass()) {
        return false;
      }
      PlaybackParameters other = (PlaybackParameters) obj;
      return this.speed == other.speed && this.pitch == other.pitch;
    }
    
    @Override
    public int hashCode() {
      int result = 17;
      result = 31 * result + Float.floatToRawIntBits(speed);
      result = 31 * result + Float.floatToRawIntBits(pitch);
      return result;
    }
  
  }
  