1 files changed, 85 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java
new file mode 100644
index 0000000000..6039a8c1a8
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java
@@ -0,0 +1,85 @@
+/*
+ * 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;
+  }
+}