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// --------------------------------------------------------------------------- 26namespace android { 27// --------------------------------------------------------------------------- 28 29class Rect; 30class String8; 31class HWComposer; 32 33// --------------------------------------------------------------------------- 34 35class FramebufferSurface : public ConsumerBase { 36public: 37 FramebufferSurface(HWComposer& hwc, int disp); 38 39 bool isUpdateOnDemand() const { return false; } 40 status_t setUpdateRectangle(const Rect& updateRect); 41 status_t compositionComplete(); 42 43 virtual void dump(String8& result); 44 45 // setReleaseFenceFd stores a fence file descriptor that will signal when the 46 // current buffer is no longer being read. This fence will be returned to 47 // the producer when the current buffer is released by updateTexImage(). 48 // Multiple fences can be set for a given buffer; they will be merged into 49 // a single union fence. The SurfaceTexture will close the file descriptor 50 // when finished with it. 51 status_t setReleaseFenceFd(int fenceFd); 52 53private: 54 virtual ~FramebufferSurface() { }; // this class cannot be overloaded 55 56 virtual void onFrameAvailable(); 57 virtual void freeBufferLocked(int slotIndex); 58 59 // nextBuffer waits for and then latches the next buffer from the 60 // BufferQueue and releases the previously latched buffer to the 61 // BufferQueue. The new buffer is returned in the 'buffer' argument. 62 status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence); 63 64 // mDisplayType must match one of the HWC display types 65 int mDisplayType; 66 67 // mCurrentBufferIndex is the slot index of the current buffer or 68 // INVALID_BUFFER_SLOT to indicate that either there is no current buffer 69 // or the buffer is not associated with a slot. 70 int mCurrentBufferSlot; 71 72 // mCurrentBuffer is the current buffer or NULL to indicate that there is 73 // no current buffer. 74 sp<GraphicBuffer> mCurrentBuffer; 75 76 // Hardware composer, owned by SurfaceFlinger. 77 HWComposer& mHwc; 78}; 79 80// --------------------------------------------------------------------------- 81}; // namespace android 82// --------------------------------------------------------------------------- 83 84#endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H 85 86