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/*
* Copyright (C) 2014 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 android.media;
/**
* The AudioGainConfig is used by APIs setting or getting values on a given gain
* controller. It contains a valid configuration (value, channels...) for a gain controller
* exposed by an audio port.
* @see AudioGain
* @see AudioPort
* @hide
*/
public class AudioGainConfig {
AudioGain mGain;
private final int mIndex;
private final int mMode;
private final int mChannelMask;
private final int mValues[];
private final int mRampDurationMs;
AudioGainConfig(int index, AudioGain gain, int mode, int channelMask,
int[] values, int rampDurationMs) {
mIndex = index;
mGain = gain;
mMode = mode;
mChannelMask = channelMask;
mValues = values;
mRampDurationMs = rampDurationMs;
}
/**
* get the index of the parent gain.
* frameworks use only.
*/
int index() {
return mIndex;
}
/**
* Bit field indicating requested modes of operation. See {@link AudioGain#MODE_JOINT},
* {@link AudioGain#MODE_CHANNELS}, {@link AudioGain#MODE_RAMP}
*/
public int mode() {
return mMode;
}
/**
* Indicates for which channels the gain is set.
* See {@link AudioFormat#CHANNEL_OUT_STEREO}, {@link AudioFormat#CHANNEL_OUT_MONO} ...
*/
public int channelMask() {
return mChannelMask;
}
/**
* Gain values for each channel in the order of bits set in
* channelMask() from LSB to MSB
*/
public int[] values() {
return mValues;
}
/**
* Ramp duration in milliseconds. N/A if mode() does not
* specify MODE_RAMP.
*/
public int rampDurationMs() {
return mRampDurationMs;
}
}
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