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...camerax/android/src/main/java/io/flutter/plugins/camerax/FallbackStrategyHostApiImpl.java
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| // Copyright 2013 The Flutter Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| package io.flutter.plugins.camerax; | ||
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| import androidx.annotation.NonNull; | ||
| import androidx.annotation.VisibleForTesting; | ||
| import androidx.camera.video.FallbackStrategy; | ||
| import androidx.camera.video.Quality; | ||
| import io.flutter.plugins.camerax.GeneratedCameraXLibrary.FallbackStrategyHostApi; | ||
| import io.flutter.plugins.camerax.GeneratedCameraXLibrary.VideoQualityConstraint; | ||
| import io.flutter.plugins.camerax.GeneratedCameraXLibrary.VideoResolutionFallbackRule; | ||
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| /** | ||
| * Host API implementation for {@link FallbackStrategy}. | ||
| * | ||
| * <p>This class may handle instantiating and adding native object instances that are attached to a | ||
| * Dart instance or handle method calls on the associated native class or an instance of the class. | ||
| */ | ||
| public class FallbackStrategyHostApiImpl implements FallbackStrategyHostApi { | ||
| private final InstanceManager instanceManager; | ||
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| private final FallbackStrategyProxy proxy; | ||
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| /** Proxy for constructors and static method of {@link FallbackStrategy}. */ | ||
| @VisibleForTesting | ||
| public static class FallbackStrategyProxy { | ||
| /** Creates an instance of {@link FallbackStrategy}. */ | ||
| public @NonNull FallbackStrategy create( | ||
| @NonNull VideoQualityConstraint videoQualityConstraint, | ||
| @NonNull VideoResolutionFallbackRule fallbackRule) { | ||
| Quality videoQuality = | ||
| QualitySelectorHostApiImpl.getQualityFromVideoQualityConstraint(videoQualityConstraint); | ||
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| switch (fallbackRule) { | ||
| case HIGHER_QUALITY_OR_LOWER_THAN: | ||
| return FallbackStrategy.higherQualityOrLowerThan(videoQuality); | ||
| case HIGHER_QUALITY_THAN: | ||
| return FallbackStrategy.higherQualityThan(videoQuality); | ||
| case LOWER_QUALITY_OR_HIGHER_THAN: | ||
| return FallbackStrategy.lowerQualityOrHigherThan(videoQuality); | ||
| case LOWER_QUALITY_THAN: | ||
| return FallbackStrategy.lowerQualityThan(videoQuality); | ||
| } | ||
| throw new IllegalArgumentException( | ||
| "Specified fallback rule " + fallbackRule + " unrecognized."); | ||
| } | ||
| } | ||
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| /** | ||
| * Constructs a {@link FallbackStrategyHostApiImpl}. | ||
| * | ||
| * @param instanceManager maintains instances stored to communicate with attached Dart objects | ||
| */ | ||
| public FallbackStrategyHostApiImpl(@NonNull InstanceManager instanceManager) { | ||
| this(instanceManager, new FallbackStrategyProxy()); | ||
| } | ||
|
|
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| /** | ||
| * Constructs a {@link FallbackStrategyHostApiImpl}. | ||
| * | ||
| * @param instanceManager maintains instances stored to communicate with attached Dart objects | ||
| * @param proxy proxy for constructors and static method of {@link FallbackStrategy} | ||
| */ | ||
| FallbackStrategyHostApiImpl( | ||
| @NonNull InstanceManager instanceManager, @NonNull FallbackStrategyProxy proxy) { | ||
| this.instanceManager = instanceManager; | ||
| this.proxy = proxy; | ||
| } | ||
|
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| /** | ||
| * Creates a {@link FallbackStrategy} instance with the video quality and fallback rule specified. | ||
| */ | ||
| @Override | ||
| public void create( | ||
| @NonNull Long identifier, | ||
| @NonNull VideoQualityConstraint videoQualityConstraint, | ||
| @NonNull VideoResolutionFallbackRule fallbackRule) { | ||
| instanceManager.addDartCreatedInstance( | ||
| proxy.create(videoQualityConstraint, fallbackRule), identifier); | ||
| } | ||
| } |
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