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