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/*
* Copyright (C) 2011 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.
*/
#ifndef NATIVE_WINDOW_WRAPPER_H_
#define NATIVE_WINDOW_WRAPPER_H_
#include <surfaceflinger/Surface.h>
#include <gui/SurfaceTextureClient.h>
namespace android {
// Both Surface and SurfaceTextureClient are RefBase that implement the
// ANativeWindow interface, but at different addresses. ANativeWindow is not
// a RefBase but acts like one for use with sp<>. This wrapper converts a
// Surface or SurfaceTextureClient into a single reference-counted object
// that holds an sp reference to the underlying Surface or SurfaceTextureClient,
// It provides a method to get the ANativeWindow.
struct NativeWindowWrapper : RefBase {
NativeWindowWrapper(
const sp<Surface> &surface) :
mSurface(surface) { }
NativeWindowWrapper(
const sp<SurfaceTextureClient> &surfaceTextureClient) :
mSurfaceTextureClient(surfaceTextureClient) { }
sp<ANativeWindow> getNativeWindow() const {
if (mSurface != NULL) {
return mSurface;
} else {
return mSurfaceTextureClient;
}
}
// If needed later we can provide a method to ask what kind of native window
private:
// At most one of mSurface and mSurfaceTextureClient will be non-NULL
const sp<Surface> mSurface;
const sp<SurfaceTextureClient> mSurfaceTextureClient;
DISALLOW_EVIL_CONSTRUCTORS(NativeWindowWrapper);
};
} // namespace android
#endif // NATIVE_WINDOW_WRAPPER_H_
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