android_frameworks_base/libs/hwui/AutoBackendTextureRelease.h
Stan Iliev aaa9e834d4 Decouple SurfaceTexture from HWUI
Remove all Skia and HWUI types from SurfaceTexture
implementation.
Move SurfaceTexture to libgui (ag/9578265).
Define private C++ API for SurfaceTexture, which is consumed
by DeferredLayerUpdater.
Move AutoBackendTextureRelease/Skia code from SurfaceTexture
to HWUI.

Test: pass CtsUiRenderingTestCases and CtsViewTestCases
Bug: 136263580
Change-Id: I3f971bb490f64a3ac0b2a66a89ba935bf7f08213
2019-11-08 15:37:17 +00:00

68 lines
2.1 KiB
C++

/*
* 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.
*/
#pragma once
#include <GrAHardwareBufferUtils.h>
#include <GrBackendSurface.h>
#include <SkImage.h>
#include <android/hardware_buffer.h>
#include <system/graphics.h>
namespace android {
namespace uirenderer {
/**
* AutoBackendTextureRelease manages EglImage/VkImage lifetime. It is a ref-counted object
* that keeps GPU resources alive until the last SkImage object using them is destroyed.
*/
class AutoBackendTextureRelease final {
public:
AutoBackendTextureRelease(GrContext* context, AHardwareBuffer* buffer);
const GrBackendTexture& getTexture() const { return mBackendTexture; }
// Only called on the RenderThread, so it need not be thread-safe.
void ref() { mUsageCount++; }
void unref(bool releaseImage);
inline sk_sp<SkImage> getImage() const { return mImage; }
void makeImage(AHardwareBuffer* buffer, android_dataspace dataspace, GrContext* context);
void newBufferContent(GrContext* context);
private:
// The only way to invoke dtor is with unref, when mUsageCount is 0.
~AutoBackendTextureRelease() {}
GrBackendTexture mBackendTexture;
GrAHardwareBufferUtils::DeleteImageProc mDeleteProc;
GrAHardwareBufferUtils::UpdateImageProc mUpdateProc;
GrAHardwareBufferUtils::TexImageCtx mImageCtx;
// Starting with refcount 1, because the first ref is held by SurfaceTexture. Additional refs
// are held by SkImages.
int mUsageCount = 1;
// mImage is the SkImage created from mBackendTexture.
sk_sp<SkImage> mImage;
};
} /* namespace uirenderer */
} /* namespace android */