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 android.util.Pair;
import android.util.Size;
import androidx.annotation.NonNull;
import androidx.annotation.experimental.UseExperimental;
import androidx.camera.camera2.impl.Camera2ImplConfig;
import androidx.camera.camera2.impl.CameraEventCallbacks;
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;
import androidx.camera.extensions.impl.PreviewImageProcessorImpl;
import java.util.List;
/**
* For providing extensions config for preview.
*/
public class PreviewConfigProvider implements ConfigProvider<PreviewConfig> {
private PreviewExtenderImpl mImpl;
private Context mContext;
@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);
}
mContext = context;
String cameraId = Camera2CameraInfo.fromCameraInfo(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.PreviewExtenderAdapter previewExtenderAdapter;
switch (mImpl.getProcessorType()) {
case PROCESSOR_TYPE_REQUEST_UPDATE_ONLY:
AdaptingRequestUpdateProcessor adaptingRequestUpdateProcessor =
new AdaptingRequestUpdateProcessor(mImpl);
builder.setImageInfoProcessor(adaptingRequestUpdateProcessor);
previewExtenderAdapter = new PreviewExtender.PreviewExtenderAdapter(mImpl,
mContext, adaptingRequestUpdateProcessor);
break;
case PROCESSOR_TYPE_IMAGE_PROCESSOR:
AdaptingPreviewProcessor adaptingPreviewProcessor = new
AdaptingPreviewProcessor((PreviewImageProcessorImpl) mImpl.getProcessor());
builder.setCaptureProcessor(adaptingPreviewProcessor);
previewExtenderAdapter = new PreviewExtender.PreviewExtenderAdapter(mImpl,
mContext, adaptingPreviewProcessor);
break;
default:
previewExtenderAdapter = new PreviewExtender.PreviewExtenderAdapter(mImpl,
mContext, null);
}
new Camera2ImplConfig.Extender<>(builder).setCameraEventCallback(
new CameraEventCallbacks(previewExtenderAdapter));
builder.setUseCaseEventCallback(previewExtenderAdapter);
List<Pair<Integer, Size[]>> supportedResolutions =
PreviewExtender.getSupportedResolutions(mImpl);
if (supportedResolutions != null) {
builder.setSupportedResolutions(supportedResolutions);
}
return builder.getUseCaseConfig();
}
}