Utils.java
/*
* Copyright 2023 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.effects.internal;
import android.graphics.Canvas;
import android.os.Build;
import android.view.Surface;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
/**
* Utility methods for overlay processing.
*/
public class Utils {
private Utils() {
}
/**
* Locks the Canvas on the given Surface.
*
* <p>This method calls {@link Surface#lockCanvas} or {@link Surface#lockHardwareCanvas()}
* depending on the API level.
*/
@NonNull
public static Canvas lockCanvas(@NonNull Surface surface) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return Api23Impl.lockHardwareCanvas(surface);
} else {
return surface.lockCanvas(null);
}
}
@RequiresApi(23)
static class Api23Impl {
private Api23Impl() {
// This class is not instantiable.
}
@DoNotInline
static Canvas lockHardwareCanvas(Surface surface) {
return surface.lockHardwareCanvas();
}
}
}