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/*
* Copyright (C) 2018 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 org.mozilla.thirdparty.com.google.android.exoplayer2.audio;
import android.media.AudioTrack;
import android.media.audiofx.AudioEffect;
import androidx.annotation.Nullable;
/**
* Represents auxiliary effect information, which can be used to attach an auxiliary effect to an
* underlying {@link AudioTrack}.
*
* <p>Auxiliary effects can only be applied if the application has the {@code
* android.permission.MODIFY_AUDIO_SETTINGS} permission. Apps are responsible for retaining the
* associated audio effect instance and releasing it when it's no longer needed. See the
* documentation of {@link AudioEffect} for more information.
*/
public final class AuxEffectInfo {
/** Value for {@link #effectId} representing no auxiliary effect. */
public static final int NO_AUX_EFFECT_ID = 0;
/**
* The identifier of the effect, or {@link #NO_AUX_EFFECT_ID} if there is no effect.
*
* @see android.media.AudioTrack#attachAuxEffect(int)
*/
public final int effectId;
/**
* The send level for the effect.
*
* @see android.media.AudioTrack#setAuxEffectSendLevel(float)
*/
public final float sendLevel;
/**
* Creates an instance with the given effect identifier and send level.
*
* @param effectId The effect identifier. This is the value returned by {@link
* AudioEffect#getId()} on the effect, or {@value NO_AUX_EFFECT_ID} which represents no
* effect. This value is passed to {@link AudioTrack#attachAuxEffect(int)} on the underlying
* audio track.
* @param sendLevel The send level for the effect, where 0 represents no effect and a value of 1
* is full send. If {@code effectId} is not {@value #NO_AUX_EFFECT_ID}, this value is passed
* to {@link AudioTrack#setAuxEffectSendLevel(float)} on the underlying audio track.
*/
public AuxEffectInfo(int effectId, float sendLevel) {
this.effectId = effectId;
this.sendLevel = sendLevel;
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
AuxEffectInfo auxEffectInfo = (AuxEffectInfo) o;
return effectId == auxEffectInfo.effectId
&& Float.compare(auxEffectInfo.sendLevel, sendLevel) == 0;
}
@Override
public int hashCode() {
int result = 17;
result = 31 * result + effectId;
result = 31 * result + Float.floatToIntBits(sendLevel);
return result;
}
}
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