103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/*
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* Copyright (C) 2018 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 <android-base/unique_fd.h>
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#include <system/window.h>
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#include <apex/window.h>
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#include <utils/Errors.h>
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#include <utils/Macros.h>
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#include <utils/NdkUtils.h>
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#include <utils/StrongPointer.h>
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#include <memory>
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#include <mutex>
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namespace android::uirenderer::renderthread {
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class ReliableSurface {
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PREVENT_COPY_AND_ASSIGN(ReliableSurface);
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public:
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ReliableSurface(ANativeWindow* window);
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~ReliableSurface();
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// Performs initialization that is not safe to do in the constructor.
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// For instance, registering ANativeWindow interceptors with ReliableSurface
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// passed as the data pointer is not safe.
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void init();
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ANativeWindow* getNativeWindow() { return mWindow; }
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int reserveNext();
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int getAndClearError() {
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int ret = mBufferQueueState;
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mBufferQueueState = OK;
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return ret;
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}
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void setExtraBufferCount(size_t extraBuffers) {
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std::lock_guard _lock{mMutex};
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mExtraBuffers = extraBuffers;
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}
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bool didSetExtraBuffers() const {
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std::lock_guard _lock{mMutex};
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return mDidSetExtraBuffers;
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}
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private:
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ANativeWindow* mWindow;
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mutable std::mutex mMutex;
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uint64_t mUsage = AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER;
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AHardwareBuffer_Format mFormat = AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
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UniqueAHardwareBuffer mScratchBuffer;
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ANativeWindowBuffer* mReservedBuffer = nullptr;
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base::unique_fd mReservedFenceFd;
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bool mHasDequeuedBuffer = false;
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int mBufferQueueState = OK;
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size_t mExtraBuffers = 0;
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size_t mExpectedBufferCount = 0;
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bool mDidSetExtraBuffers = false;
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bool isFallbackBuffer(const ANativeWindowBuffer* windowBuffer) const;
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ANativeWindowBuffer* acquireFallbackBuffer(int error);
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void clearReservedBuffer();
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// ANativeWindow hooks. When an ANativeWindow_* method is called on the
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// underlying ANativeWindow, these methods will intercept the original call.
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// For example, an EGL driver would call into these hooks instead of the
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// original methods.
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static int hook_cancelBuffer(ANativeWindow* window, ANativeWindow_cancelBufferFn cancelBuffer,
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void* data, ANativeWindowBuffer* buffer, int fenceFd);
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static int hook_dequeueBuffer(ANativeWindow* window,
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ANativeWindow_dequeueBufferFn dequeueBuffer, void* data,
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ANativeWindowBuffer** buffer, int* fenceFd);
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static int hook_queueBuffer(ANativeWindow* window, ANativeWindow_queueBufferFn queueBuffer,
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void* data, ANativeWindowBuffer* buffer, int fenceFd);
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static int hook_perform(ANativeWindow* window, ANativeWindow_performFn perform, void* data,
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int operation, va_list args);
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static int hook_query(const ANativeWindow* window, ANativeWindow_queryFn query, void* data,
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int what, int* value);
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};
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}; // namespace android::uirenderer::renderthread
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