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/*
* Copyright 2019 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.impl;
import android.content.Context;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.SessionConfiguration;
import android.util.Pair;
import android.util.Size;
import android.view.Surface;
import java.util.List;
/**
* Implementation for bokeh preview use case.
*
* <p>This class should be implemented by OEM and deployed to the target devices. 3P developers
* don't need to implement this, unless this is used for related testing usage.
*
* @since 1.0
* @hide
*/
public final class BokehPreviewExtenderImpl implements PreviewExtenderImpl {
private static final int DEFAULT_STAGE_ID = 0;
private static final int SESSION_STAGE_ID = 101;
private static final int MODE = CaptureRequest.CONTROL_AWB_MODE_SHADE;
SettableCaptureStage mCaptureStage;
/**
* @hide
*/
public BokehPreviewExtenderImpl() {}
/**
* @hide
*/
@Override
public void init(String cameraId, CameraCharacteristics cameraCharacteristics) {
mCaptureStage = new SettableCaptureStage(DEFAULT_STAGE_ID);
mCaptureStage.addCaptureRequestParameters(CaptureRequest.CONTROL_AWB_MODE,
CaptureRequest.CONTROL_AWB_MODE_AUTO);
}
/**
* @hide
*/
@Override
public boolean isExtensionAvailable(String cameraId,
CameraCharacteristics cameraCharacteristics) {
// Implement the logic to check whether the extension function is supported or not.
if (cameraCharacteristics == null) {
return false;
}
return CameraCharacteristicAvailability.isWBModeAvailable(cameraCharacteristics, MODE) &&
CameraCharacteristicAvailability.hasFlashUnit(cameraCharacteristics);
}
/**
* @hide
*/
@Override
public CaptureStageImpl getCaptureStage() {
return mCaptureStage;
}
/**
* @hide
*/
@Override
public ProcessorType getProcessorType() {
return ProcessorType.PROCESSOR_TYPE_REQUEST_UPDATE_ONLY;
}
/**
* @hide
*/
// Switches effect every 90 frames
private RequestUpdateProcessorImpl mRequestUpdateProcessor = new RequestUpdateProcessorImpl() {
private int mFrameCount = 0;
private Integer mWBMode = CaptureRequest.CONTROL_AWB_MODE_AUTO;
@Override
public CaptureStageImpl process(TotalCaptureResult result) {
mFrameCount++;
if (mFrameCount % 90 == 0) {
mCaptureStage = new SettableCaptureStage(DEFAULT_STAGE_ID);
switch (mWBMode) {
case CaptureRequest.CONTROL_AWB_MODE_AUTO:
mWBMode = MODE;
break;
case MODE:
mWBMode = CaptureRequest.CONTROL_AWB_MODE_AUTO;
break;
default:
}
mCaptureStage.addCaptureRequestParameters(CaptureRequest.CONTROL_AWB_MODE,
mWBMode);
mFrameCount = 0;
return mCaptureStage;
}
return null;
}
@Override
public void onOutputSurface(Surface surface, int imageFormat) {}
@Override
public void onResolutionUpdate(Size size) {}
@Override
public void onImageFormatUpdate(int imageFormat) {}
};
/**
* @hide
*/
@Override
public ProcessorImpl getProcessor() {
return mRequestUpdateProcessor;
}
/**
* @hide
*/
@Override
public List<Pair<Integer, Size[]>> getSupportedResolutions() {
return null;
}
/**
* @hide
*/
@Override
public void onInit(String cameraId, CameraCharacteristics cameraCharacteristics,
Context context) {
}
/**
* @hide
*/
@Override
public void onDeInit() {
}
/**
* @hide
*/
@Override
public CaptureStageImpl onPresetSession() {
// Set the necessary CaptureRequest parameters via CaptureStage, here we use some
// placeholder set of CaptureRequest.Key values
SettableCaptureStage captureStage = new SettableCaptureStage(SESSION_STAGE_ID);
captureStage.addCaptureRequestParameters(CaptureRequest.CONTROL_AWB_MODE, MODE);
return captureStage;
}
/**
* @hide
*/
@Override
public CaptureStageImpl onEnableSession() {
// Set the necessary CaptureRequest parameters via CaptureStage, here we use some
// placeholder set of CaptureRequest.Key values
SettableCaptureStage captureStage = new SettableCaptureStage(SESSION_STAGE_ID);
captureStage.addCaptureRequestParameters(CaptureRequest.CONTROL_AWB_MODE, MODE);
return captureStage;
}
/**
* @hide
*/
@Override
public CaptureStageImpl onDisableSession() {
// Set the necessary CaptureRequest parameters via CaptureStage, here we use some
// placeholder set of CaptureRequest.Key values
SettableCaptureStage captureStage = new SettableCaptureStage(SESSION_STAGE_ID);
captureStage.addCaptureRequestParameters(CaptureRequest.CONTROL_AWB_MODE, MODE);
return captureStage;
}
@Override
public int onSessionType() {
return SessionConfiguration.SESSION_REGULAR;
}
}
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