PreviewConfigProvider.java
/*
* Copyright 2020 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 androidx.camera.extensions.internal;
import android.util.Pair;
import android.util.Size;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.camera.core.Preview;
import androidx.camera.core.impl.Config;
import androidx.camera.core.impl.ConfigProvider;
import androidx.camera.core.impl.PreviewConfig;
import androidx.camera.extensions.ExtensionMode;
import java.util.List;
/**
* For providing extensions config for preview.
*/
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class PreviewConfigProvider implements ConfigProvider<PreviewConfig> {
private static final String TAG = "PreviewConfigProvider";
static final Config.Option<Integer> OPTION_PREVIEW_CONFIG_PROVIDER_MODE = Config.Option.create(
"camerax.extensions.previewConfigProvider.mode", Integer.class);
private final VendorExtender mVendorExtender;
@ExtensionMode.Mode
private final int mEffectMode;
public PreviewConfigProvider(
@ExtensionMode.Mode int mode,
@NonNull VendorExtender vendorExtender) {
mEffectMode = mode;
mVendorExtender = vendorExtender;
}
@NonNull
@Override
public PreviewConfig getConfig() {
Preview.Builder builder = new Preview.Builder();
updateBuilderConfig(builder, mEffectMode, mVendorExtender);
return builder.getUseCaseConfig();
}
/**
* Update extension related configs to the builder.
*/
void updateBuilderConfig(@NonNull Preview.Builder builder,
@ExtensionMode.Mode int effectMode, @NonNull VendorExtender vendorExtender) {
builder.getMutableConfig().insertOption(OPTION_PREVIEW_CONFIG_PROVIDER_MODE, effectMode);
List<Pair<Integer, Size[]>> supportedResolutions =
vendorExtender.getSupportedPreviewOutputResolutions();
builder.setSupportedResolutions(supportedResolutions);
builder.setHighResolutionDisabled(true);
}
}