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 "DisplaySurface.h" 21 #include "HWComposerBufferCache.h" 22 23 #include <stdint.h> 24 #include <sys/types.h> 25 26 #include <gui/ConsumerBase.h> 27 28 // --------------------------------------------------------------------------- 29 namespace android { 30 // --------------------------------------------------------------------------- 31 32 class Rect; 33 class String8; 34 class HWComposer; 35 36 // --------------------------------------------------------------------------- 37 38 class FramebufferSurface : public ConsumerBase, 39 public DisplaySurface { 40 public: 41 FramebufferSurface(HWComposer& hwc, int disp, const sp<IGraphicBufferConsumer>& consumer); 42 43 virtual status_t beginFrame(bool mustRecompose); 44 virtual status_t prepareFrame(CompositionType compositionType); 45 #ifndef USE_HWC2 46 virtual status_t compositionComplete(); 47 #endif 48 virtual status_t advanceFrame(); 49 virtual void onFrameCommitted(); 50 virtual void dumpAsString(String8& result) const; 51 52 // Cannot resize a buffers in a FramebufferSurface. Only works with virtual 53 // displays. resizeBuffers(const uint32_t,const uint32_t)54 virtual void resizeBuffers(const uint32_t /*w*/, const uint32_t /*h*/) { }; 55 56 virtual const sp<Fence>& getClientTargetAcquireFence() const override; 57 58 private: ~FramebufferSurface()59 virtual ~FramebufferSurface() { }; // this class cannot be overloaded 60 61 #ifndef USE_HWC2 62 virtual void onFrameAvailable(const BufferItem& item); 63 #endif 64 virtual void freeBufferLocked(int slotIndex); 65 66 virtual void dumpLocked(String8& result, const char* prefix) const; 67 68 // nextBuffer waits for and then latches the next buffer from the 69 // BufferQueue and releases the previously latched buffer to the 70 // BufferQueue. The new buffer is returned in the 'buffer' argument. 71 #ifdef USE_HWC2 72 status_t nextBuffer(uint32_t& outSlot, sp<GraphicBuffer>& outBuffer, 73 sp<Fence>& outFence, android_dataspace_t& outDataspace); 74 #else 75 status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence); 76 #endif 77 78 // mDisplayType must match one of the HWC display types 79 int mDisplayType; 80 81 // mCurrentBufferIndex is the slot index of the current buffer or 82 // INVALID_BUFFER_SLOT to indicate that either there is no current buffer 83 // or the buffer is not associated with a slot. 84 int mCurrentBufferSlot; 85 86 // mCurrentBuffer is the current buffer or NULL to indicate that there is 87 // no current buffer. 88 sp<GraphicBuffer> mCurrentBuffer; 89 90 // mCurrentFence is the current buffer's acquire fence 91 sp<Fence> mCurrentFence; 92 93 // Hardware composer, owned by SurfaceFlinger. 94 HWComposer& mHwc; 95 96 #ifdef USE_HWC2 97 HWComposerBufferCache mHwcBufferCache; 98 99 // Previous buffer to release after getting an updated retire fence 100 bool mHasPendingRelease; 101 int mPreviousBufferSlot; 102 sp<GraphicBuffer> mPreviousBuffer; 103 #endif 104 }; 105 106 // --------------------------------------------------------------------------- 107 }; // namespace android 108 // --------------------------------------------------------------------------- 109 110 #endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H 111 112