1 /* 2 * Copyright (C) 2012 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_SURFACEFLINGERCONSUMER_H 18 #define ANDROID_SURFACEFLINGERCONSUMER_H 19 20 #include <gui/GLConsumer.h> 21 22 namespace android { 23 // ---------------------------------------------------------------------------- 24 25 /* 26 * This is a thin wrapper around GLConsumer. 27 */ 28 class SurfaceFlingerConsumer : public GLConsumer { 29 public: SurfaceFlingerConsumer(const sp<BufferQueue> & bq,uint32_t tex)30 SurfaceFlingerConsumer(const sp<BufferQueue>& bq, uint32_t tex) 31 : GLConsumer(bq, tex, GLConsumer::TEXTURE_EXTERNAL, false) 32 {} 33 34 class BufferRejecter { 35 friend class SurfaceFlingerConsumer; 36 virtual bool reject(const sp<GraphicBuffer>& buf, 37 const IGraphicBufferConsumer::BufferItem& item) = 0; 38 39 protected: ~BufferRejecter()40 virtual ~BufferRejecter() { } 41 }; 42 43 virtual status_t acquireBufferLocked(BufferQueue::BufferItem *item, nsecs_t presentWhen); 44 45 // This version of updateTexImage() takes a functor that may be used to 46 // reject the newly acquired buffer. Unlike the GLConsumer version, 47 // this does not guarantee that the buffer has been bound to the GL 48 // texture. 49 status_t updateTexImage(BufferRejecter* rejecter); 50 51 // See GLConsumer::bindTextureImageLocked(). 52 status_t bindTextureImage(); 53 54 // must be called from SF main thread 55 bool getTransformToDisplayInverse() const; 56 57 private: 58 nsecs_t computeExpectedPresent(); 59 60 // Indicates this buffer must be transformed by the inverse transform of the screen 61 // it is displayed onto. This is applied after GLConsumer::mCurrentTransform. 62 // This must be set/read from SurfaceFlinger's main thread. 63 bool mTransformToDisplayInverse; 64 }; 65 66 // ---------------------------------------------------------------------------- 67 }; // namespace android 68 69 #endif // ANDROID_SURFACEFLINGERCONSUMER_H 70