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 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 // Cannot resize a buffers in a FramebufferSurface. Only works with virtual 53 // displays. 54 virtual void resizeBuffers(const uint32_t /*w*/, const uint32_t /*h*/) { }; 55 56 private: 57 virtual ~FramebufferSurface() { }; // this class cannot be overloaded 58 59 virtual void onFrameAvailable(); 60 virtual void freeBufferLocked(int slotIndex); 61 62 virtual void dumpLocked(String8& result, const char* prefix) const; 63 64 // nextBuffer waits for and then latches the next buffer from the 65 // BufferQueue and releases the previously latched buffer to the 66 // BufferQueue. The new buffer is returned in the 'buffer' argument. 67 status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence); 68 69 // mDisplayType must match one of the HWC display types 70 int mDisplayType; 71 72 // mCurrentBufferIndex is the slot index of the current buffer or 73 // INVALID_BUFFER_SLOT to indicate that either there is no current buffer 74 // or the buffer is not associated with a slot. 75 int mCurrentBufferSlot; 76 77 // mCurrentBuffer is the current buffer or NULL to indicate that there is 78 // no current buffer. 79 sp<GraphicBuffer> mCurrentBuffer; 80 81 // Hardware composer, owned by SurfaceFlinger. 82 HWComposer& mHwc; 83 }; 84 85 // --------------------------------------------------------------------------- 86 }; // namespace android 87 // --------------------------------------------------------------------------- 88 89 #endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H 90 91