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.content.Context;
import android.hardware.camera2.CameraCharacteristics;
import androidx.annotation.NonNull;
import androidx.annotation.experimental.UseExperimental;
import androidx.camera.camera2.interop.Camera2CameraInfo;
import androidx.camera.camera2.interop.ExperimentalCamera2Interop;
import androidx.camera.core.CameraInfo;
import androidx.camera.core.Preview;
import androidx.camera.core.impl.ConfigProvider;
import androidx.camera.core.impl.OptionsBundle;
import androidx.camera.core.impl.PreviewConfig;
import androidx.camera.extensions.Extensions;
import androidx.camera.extensions.PreviewExtender;
import androidx.camera.extensions.impl.AutoPreviewExtenderImpl;
import androidx.camera.extensions.impl.BeautyPreviewExtenderImpl;
import androidx.camera.extensions.impl.BokehPreviewExtenderImpl;
import androidx.camera.extensions.impl.HdrPreviewExtenderImpl;
import androidx.camera.extensions.impl.NightPreviewExtenderImpl;
import androidx.camera.extensions.impl.PreviewExtenderImpl;
/**
* For providing extensions config for preview.
*/
public class PreviewConfigProvider implements ConfigProvider<PreviewConfig> {
private PreviewExtenderImpl mImpl;
private Context mContext;
@Extensions.ExtensionMode
private int mEffectMode;
@UseExperimental(markerClass = ExperimentalCamera2Interop.class)
public PreviewConfigProvider(@Extensions.ExtensionMode int mode,
@NonNull CameraInfo cameraInfo, @NonNull Context context) {
try {
switch (mode) {
case Extensions.EXTENSION_MODE_BOKEH:
mImpl = new BokehPreviewExtenderImpl();
break;
case Extensions.EXTENSION_MODE_HDR:
mImpl = new HdrPreviewExtenderImpl();
break;
case Extensions.EXTENSION_MODE_NIGHT:
mImpl = new NightPreviewExtenderImpl();
break;
case Extensions.EXTENSION_MODE_BEAUTY:
mImpl = new BeautyPreviewExtenderImpl();
break;
case Extensions.EXTENSION_MODE_AUTO:
mImpl = new AutoPreviewExtenderImpl();
break;
case Extensions.EXTENSION_MODE_NONE:
default:
return;
}
} catch (NoClassDefFoundError e) {
throw new IllegalArgumentException("Extension mode does not exist: " + mode);
}
mEffectMode = mode;
mContext = context;
String cameraId = Camera2CameraInfo.from(cameraInfo).getCameraId();
CameraCharacteristics cameraCharacteristics =
Camera2CameraInfo.extractCameraCharacteristics(cameraInfo);
mImpl.init(cameraId, cameraCharacteristics);
}
@NonNull
@Override
public PreviewConfig getConfig() {
if (mImpl == null) {
return new PreviewConfig(OptionsBundle.emptyBundle());
}
Preview.Builder builder = new Preview.Builder();
PreviewExtender.updateBuilderConfig(builder, mEffectMode, mImpl, mContext);
return builder.getUseCaseConfig();
}
}