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/*
* 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 org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererConfiguration;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
import org.checkerframework.checker.nullness.compatqual.NullableType;
/**
* The result of a {@link TrackSelector} operation.
*/
public final class TrackSelectorResult {
/** The number of selections in the result. Greater than or equal to zero. */
public final int length;
/**
* A {@link RendererConfiguration} for each renderer. A null entry indicates the corresponding
* renderer should be disabled.
*/
public final @NullableType RendererConfiguration[] rendererConfigurations;
/**
* A {@link TrackSelectionArray} containing the track selection for each renderer.
*/
public final TrackSelectionArray selections;
/**
* An opaque object that will be returned to {@link TrackSelector#onSelectionActivated(Object)}
* should the selections be activated.
*/
public final Object info;
/**
* @param rendererConfigurations A {@link RendererConfiguration} for each renderer. A null entry
* indicates the corresponding renderer should be disabled.
* @param selections A {@link TrackSelectionArray} containing the selection for each renderer.
* @param info An opaque object that will be returned to {@link
* TrackSelector#onSelectionActivated(Object)} should the selection be activated.
*/
public TrackSelectorResult(
@NullableType RendererConfiguration[] rendererConfigurations,
@NullableType TrackSelection[] selections,
Object info) {
this.rendererConfigurations = rendererConfigurations;
this.selections = new TrackSelectionArray(selections);
this.info = info;
length = rendererConfigurations.length;
}
/** Returns whether the renderer at the specified index is enabled. */
public boolean isRendererEnabled(int index) {
return rendererConfigurations[index] != null;
}
/**
* Returns whether this result is equivalent to {@code other} for all renderers.
*
* @param other The other {@link TrackSelectorResult}. May be null, in which case {@code false}
* will be returned.
* @return Whether this result is equivalent to {@code other} for all renderers.
*/
public boolean isEquivalent(@Nullable TrackSelectorResult other) {
if (other == null || other.selections.length != selections.length) {
return false;
}
for (int i = 0; i < selections.length; i++) {
if (!isEquivalent(other, i)) {
return false;
}
}
return true;
}
/**
* Returns whether this result is equivalent to {@code other} for the renderer at the given index.
* The results are equivalent if they have equal track selections and configurations for the
* renderer.
*
* @param other The other {@link TrackSelectorResult}. May be null, in which case {@code false}
* will be returned.
* @param index The renderer index to check for equivalence.
* @return Whether this result is equivalent to {@code other} for the renderer at the specified
* index.
*/
public boolean isEquivalent(@Nullable TrackSelectorResult other, int index) {
if (other == null) {
return false;
}
return Util.areEqual(rendererConfigurations[index], other.rendererConfigurations[index])
&& Util.areEqual(selections.get(index), other.selections.get(index));
}
}
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