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/*
* Copyright 2021 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 <android-base/macros.h>
#include <ui/GraphicBuffer.h>
namespace android::renderengine {
class RenderEngine;
/**
* Manages GPU image resources on behalf of clients using RenderEngine.
*
* Clients of RenderEngine are required to wrap their GraphicBuffer objects as an ExternalTexture,
* which is then mapped into GPU resources required by RenderEngine. When a client no longer needs
* to use the GraphicBuffer as input into RenderEngine::drawLayers, then the client should delete
* their ExternalTexture so that resources may be freed.
*/
class ExternalTexture {
public:
ExternalTexture() = default;
virtual ~ExternalTexture() = default;
virtual bool hasSameBuffer(const ExternalTexture& other) const = 0;
virtual uint32_t getWidth() const = 0;
virtual uint32_t getHeight() const = 0;
virtual uint64_t getId() const = 0;
virtual PixelFormat getPixelFormat() const = 0;
virtual uint64_t getUsage() const = 0;
// Retrieves the buffer that is bound to this texture.
virtual const sp<GraphicBuffer>& getBuffer() const = 0;
virtual void remapBuffer() = 0;
Rect getBounds() const {
return {0, 0, static_cast<int32_t>(getWidth()), static_cast<int32_t>(getHeight())};
}
DISALLOW_COPY_AND_ASSIGN(ExternalTexture);
};
} // namespace android::renderengine
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