@java.lang.Override
    public boolean equals(final java.lang.Object obj) {
      if (obj == this) {
        return true;
      }
      if (!(obj instanceof com.google.cloud.video.transcoder.v1.AudioStream.AudioMapping)) {
        return super.equals(obj);
      }
      com.google.cloud.video.transcoder.v1.AudioStream.AudioMapping other =
          (com.google.cloud.video.transcoder.v1.AudioStream.AudioMapping) obj;

      if (!getAtomKey().equals(other.getAtomKey())) return false;
      if (!getInputKey().equals(other.getInputKey())) return false;
      if (getInputTrack() != other.getInputTrack()) return false;
      if (getInputChannel() != other.getInputChannel()) return false;
      if (getOutputChannel() != other.getOutputChannel()) return false;
      if (java.lang.Double.doubleToLongBits(getGainDb())
          != java.lang.Double.doubleToLongBits(other.getGainDb())) return false;
      if (!getUnknownFields().equals(other.getUnknownFields())) return false;
      return true;
    }
<pre>
Audio volume control in dB. Negative values decrease volume,
positive values increase. The default is 0.
</pre>

<code>double gain_db = 6;</code>

@return The gainDb.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/AudioStream.java