1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <gui/Surface.h>
20 #include <utils/Macros.h>
21 #include <utils/StrongPointer.h>
22 
23 #include <memory>
24 
25 namespace android::uirenderer::renderthread {
26 
27 class ReliableSurface : public ANativeObjectBase<ANativeWindow, ReliableSurface, RefBase> {
28     PREVENT_COPY_AND_ASSIGN(ReliableSurface);
29 
30 public:
31     ReliableSurface(sp<Surface>&& surface);
32     ~ReliableSurface();
33 
setDequeueTimeout(nsecs_t timeout)34     void setDequeueTimeout(nsecs_t timeout) { mSurface->setDequeueTimeout(timeout); }
35 
36     int reserveNext();
37 
allocateBuffers()38     void allocateBuffers() { mSurface->allocateBuffers(); }
39 
query(int what,int * value)40     int query(int what, int* value) const { return mSurface->query(what, value); }
41 
getLastDequeueStartTime()42     nsecs_t getLastDequeueStartTime() const { return mSurface->getLastDequeueStartTime(); }
43 
getNextFrameNumber()44     uint64_t getNextFrameNumber() const { return mSurface->getNextFrameNumber(); }
45 
46 private:
47     const sp<Surface> mSurface;
48 
49     mutable std::mutex mMutex;
50 
51     uint64_t mUsage = AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER;
52     PixelFormat mFormat = PIXEL_FORMAT_RGBA_8888;
53     std::unique_ptr<AHardwareBuffer, void (*)(AHardwareBuffer*)> mScratchBuffer{
54             nullptr, AHardwareBuffer_release};
55     ANativeWindowBuffer* mReservedBuffer = nullptr;
56     base::unique_fd mReservedFenceFd;
57     bool mHasDequeuedBuffer = false;
58     bool mInErrorState = false;
59 
60     bool isFallbackBuffer(const ANativeWindowBuffer* windowBuffer) const;
61     ANativeWindowBuffer* acquireFallbackBuffer();
62     void clearReservedBuffer();
63 
64     void perform(int operation, va_list args);
65     int cancelBuffer(ANativeWindowBuffer* buffer, int fenceFd);
66     int dequeueBuffer(ANativeWindowBuffer** buffer, int* fenceFd);
67     int queueBuffer(ANativeWindowBuffer* buffer, int fenceFd);
68 
69     static Surface* getWrapped(const ANativeWindow*);
70 
71     // ANativeWindow hooks
72     static int hook_cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer, int fenceFd);
73     static int hook_dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer,
74                                   int* fenceFd);
75     static int hook_queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer, int fenceFd);
76 
77     static int hook_perform(ANativeWindow* window, int operation, ...);
78     static int hook_query(const ANativeWindow* window, int what, int* value);
79     static int hook_setSwapInterval(ANativeWindow* window, int interval);
80 
81     static int hook_cancelBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer* buffer);
82     static int hook_dequeueBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer** buffer);
83     static int hook_lockBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer* buffer);
84     static int hook_queueBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer* buffer);
85 };
86 
87 };  // namespace android::uirenderer::renderthread