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