1 /* 2 * Copyright (C) 2007 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 #ifndef ANDROID_SF_FRAMEBUFFER_SURFACE_H 18 #define ANDROID_SF_FRAMEBUFFER_SURFACE_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <compositionengine/DisplaySurface.h> 24 #include <compositionengine/impl/HwcBufferCache.h> 25 #include <gui/ConsumerBase.h> 26 27 #include "DisplayIdentification.h" 28 29 // --------------------------------------------------------------------------- 30 namespace android { 31 // --------------------------------------------------------------------------- 32 33 class Rect; 34 class String8; 35 class HWComposer; 36 37 // --------------------------------------------------------------------------- 38 39 class FramebufferSurface : public ConsumerBase, public compositionengine::DisplaySurface { 40 public: 41 FramebufferSurface(HWComposer& hwc, DisplayId displayId, 42 const sp<IGraphicBufferConsumer>& consumer); 43 44 virtual status_t beginFrame(bool mustRecompose); 45 virtual status_t prepareFrame(CompositionType compositionType); 46 virtual status_t advanceFrame(); 47 virtual void onFrameCommitted(); 48 virtual void dumpAsString(String8& result) const; 49 50 virtual void resizeBuffers(const uint32_t width, const uint32_t height); 51 52 virtual const sp<Fence>& getClientTargetAcquireFence() const override; 53 54 private: ~FramebufferSurface()55 virtual ~FramebufferSurface() { }; // this class cannot be overloaded 56 57 virtual void freeBufferLocked(int slotIndex); 58 59 virtual void dumpLocked(String8& result, const char* prefix) const; 60 61 // nextBuffer waits for and then latches the next buffer from the 62 // BufferQueue and releases the previously latched buffer to the 63 // BufferQueue. The new buffer is returned in the 'buffer' argument. 64 status_t nextBuffer(uint32_t& outSlot, sp<GraphicBuffer>& outBuffer, 65 sp<Fence>& outFence, ui::Dataspace& outDataspace); 66 67 const DisplayId mDisplayId; 68 69 // mCurrentBufferIndex is the slot index of the current buffer or 70 // INVALID_BUFFER_SLOT to indicate that either there is no current buffer 71 // or the buffer is not associated with a slot. 72 int mCurrentBufferSlot; 73 74 // mDataSpace is the dataspace of the current composition buffer for 75 // this FramebufferSurface. It will be 0 when HWC is doing the 76 // compositing. Otherwise it will display the dataspace of the buffer 77 // use for compositing which can change as wide-color content is 78 // on/off. 79 ui::Dataspace mDataSpace; 80 81 // mCurrentBuffer is the current buffer or nullptr to indicate that there is 82 // no current buffer. 83 sp<GraphicBuffer> mCurrentBuffer; 84 85 // mCurrentFence is the current buffer's acquire fence 86 sp<Fence> mCurrentFence; 87 88 // Hardware composer, owned by SurfaceFlinger. 89 HWComposer& mHwc; 90 91 compositionengine::impl::HwcBufferCache mHwcBufferCache; 92 93 // Previous buffer to release after getting an updated retire fence 94 bool mHasPendingRelease; 95 int mPreviousBufferSlot; 96 sp<GraphicBuffer> mPreviousBuffer; 97 }; 98 99 // --------------------------------------------------------------------------- 100 }; // namespace android 101 // --------------------------------------------------------------------------- 102 103 #endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H 104 105