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(); 43 virtual status_t prepareFrame(CompositionType compositionType); 44 virtual status_t compositionComplete(); 45 virtual status_t advanceFrame(); 46 virtual void onFrameCommitted(); 47 48 // Implementation of DisplaySurface::dump(). Note that ConsumerBase also 49 // has a non-virtual dump() with the same signature. 50 virtual void dump(String8& result) const; 51 52 private: ~FramebufferSurface()53 virtual ~FramebufferSurface() { }; // this class cannot be overloaded 54 55 virtual void onFrameAvailable(); 56 virtual void freeBufferLocked(int slotIndex); 57 58 virtual void dumpLocked(String8& result, const char* prefix) const; 59 60 // nextBuffer waits for and then latches the next buffer from the 61 // BufferQueue and releases the previously latched buffer to the 62 // BufferQueue. The new buffer is returned in the 'buffer' argument. 63 status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence); 64 65 // mDisplayType must match one of the HWC display types 66 int mDisplayType; 67 68 // mCurrentBufferIndex is the slot index of the current buffer or 69 // INVALID_BUFFER_SLOT to indicate that either there is no current buffer 70 // or the buffer is not associated with a slot. 71 int mCurrentBufferSlot; 72 73 // mCurrentBuffer is the current buffer or NULL to indicate that there is 74 // no current buffer. 75 sp<GraphicBuffer> mCurrentBuffer; 76 77 // Hardware composer, owned by SurfaceFlinger. 78 HWComposer& mHwc; 79 }; 80 81 // --------------------------------------------------------------------------- 82 }; // namespace android 83 // --------------------------------------------------------------------------- 84 85 #endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H 86 87