CameraManagerCompatBaseImpl.java
/*
* 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.camera2.impl.compat;
import android.content.Context;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.annotation.RequiresPermission;
import androidx.camera.core.impl.utils.MainThreadAsyncHandler;
import androidx.core.util.Preconditions;
import java.util.concurrent.Executor;
@RequiresApi(21)
class CameraManagerCompatBaseImpl implements CameraManagerCompat.CameraManagerCompatImpl {
final CameraManager mCameraManager;
CameraManagerCompatBaseImpl(@NonNull Context context) {
mCameraManager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE);
}
@RequiresPermission(android.Manifest.permission.CAMERA)
@Override
public void openCamera(@NonNull String cameraId, @NonNull Executor executor,
@NonNull CameraDevice.StateCallback callback) throws CameraAccessException {
Preconditions.checkNotNull(executor);
Preconditions.checkNotNull(callback);
// Wrap the executor in the callback
CameraDevice.StateCallback cb =
new CameraDeviceCompat.StateCallbackExecutorWrapper(executor, callback);
mCameraManager.openCamera(cameraId, cb, MainThreadAsyncHandler.getInstance());
}
@NonNull
@Override
public CameraManager getCameraManager() {
return mCameraManager;
}
}