DisplaySurface.h revision 13f01cbdbd34779a234bc674df79e23672fd5c0b
1/* 2 * Copyright 2013 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_DISPLAY_SURFACE_H 18#define ANDROID_SF_DISPLAY_SURFACE_H 19 20#include <utils/Errors.h> 21#include <utils/RefBase.h> 22#include <utils/StrongPointer.h> 23 24// --------------------------------------------------------------------------- 25namespace android { 26// --------------------------------------------------------------------------- 27 28class IGraphicBufferProducer; 29class String8; 30 31class DisplaySurface : public virtual RefBase { 32public: 33 virtual sp<IGraphicBufferProducer> getIGraphicBufferProducer() const = 0; 34 35 // Should be called when composition rendering is complete for a frame (but 36 // eglSwapBuffers hasn't necessarily been called). Required by certain 37 // older drivers for synchronization. 38 // TODO: Remove this when we drop support for HWC 1.0. 39 virtual status_t compositionComplete() = 0; 40 41 // Inform the surface that GLES composition is complete for this frame, and 42 // the surface should make sure that HWComposer has the correct buffer for 43 // this frame. Some implementations may only push a new buffer to 44 // HWComposer if GLES composition took place, others need to push a new 45 // buffer on every frame. 46 // 47 // advanceFrame must be followed by a call to onFrameCommitted before 48 // advanceFrame may be called again. 49 virtual status_t advanceFrame() = 0; 50 51 // onFrameCommitted is called after the frame has been committed to the 52 // hardware composer and a release fence is available for the buffer. 53 // Further operations on the buffer can be queued as long as they wait for 54 // the fence to signal. 55 virtual void onFrameCommitted(const sp<Fence>& fence) = 0; 56 57 virtual void dump(String8& result) const = 0; 58 59protected: 60 DisplaySurface() {} 61 virtual ~DisplaySurface() {} 62}; 63 64// --------------------------------------------------------------------------- 65} // namespace android 66// --------------------------------------------------------------------------- 67 68#endif // ANDROID_SF_DISPLAY_SURFACE_H 69 70