73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <GrAHardwareBufferUtils.h>
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#include <GrBackendSurface.h>
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#include <SkImage.h>
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#include <android/hardware_buffer.h>
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#include <system/graphics.h>
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namespace android {
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namespace uirenderer {
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/**
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* AutoBackendTextureRelease manages EglImage/VkImage lifetime. It is a ref-counted object
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* that keeps GPU resources alive until the last SkImage object using them is destroyed.
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*/
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class AutoBackendTextureRelease final {
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public:
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AutoBackendTextureRelease(GrDirectContext* context,
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AHardwareBuffer* buffer);
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const GrBackendTexture& getTexture() const { return mBackendTexture; }
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// Only called on the RenderThread, so it need not be thread-safe.
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void ref() { mUsageCount++; }
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void unref(bool releaseImage);
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inline sk_sp<SkImage> getImage() const { return mImage; }
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void makeImage(AHardwareBuffer* buffer,
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android_dataspace dataspace,
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GrDirectContext* context);
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void newBufferContent(GrDirectContext* context);
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void releaseQueueOwnership(GrDirectContext* context);
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private:
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// The only way to invoke dtor is with unref, when mUsageCount is 0.
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~AutoBackendTextureRelease() {}
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GrBackendTexture mBackendTexture;
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GrAHardwareBufferUtils::DeleteImageProc mDeleteProc;
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GrAHardwareBufferUtils::UpdateImageProc mUpdateProc;
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GrAHardwareBufferUtils::TexImageCtx mImageCtx;
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// Starting with refcount 1, because the first ref is held by SurfaceTexture. Additional refs
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// are held by SkImages.
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int mUsageCount = 1;
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// mImage is the SkImage created from mBackendTexture.
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sk_sp<SkImage> mImage;
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};
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} /* namespace uirenderer */
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} /* namespace android */
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