/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ANDROID_GUI_SURFACETEXTURECLIENT_H #define ANDROID_GUI_SURFACETEXTURECLIENT_H #include #include #include #include #include #include namespace android { class Surface; class SurfaceTextureClient : public EGLNativeBase { public: SurfaceTextureClient(const sp& surfaceTexture); sp getISurfaceTexture() const; protected: SurfaceTextureClient(); void setISurfaceTexture(const sp& surfaceTexture); private: // can't be copied SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs); SurfaceTextureClient(const SurfaceTextureClient& rhs); void init(); // ANativeWindow hooks static int hook_cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer); static int hook_dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer); static int hook_lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer); static int hook_perform(ANativeWindow* window, int operation, ...); static int hook_query(const ANativeWindow* window, int what, int* value); static int hook_queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer); static int hook_setSwapInterval(ANativeWindow* window, int interval); int dispatchConnect(va_list args); int dispatchDisconnect(va_list args); int dispatchSetBufferCount(va_list args); int dispatchSetBuffersGeometry(va_list args); int dispatchSetBuffersDimensions(va_list args); int dispatchSetBuffersFormat(va_list args); int dispatchSetScalingMode(va_list args); int dispatchSetBuffersTransform(va_list args); int dispatchSetBuffersTimestamp(va_list args); int dispatchSetCrop(va_list args); int dispatchSetUsage(va_list args); int dispatchLock(va_list args); int dispatchUnlockAndPost(va_list args); protected: virtual int cancelBuffer(ANativeWindowBuffer* buffer); virtual int dequeueBuffer(ANativeWindowBuffer** buffer); virtual int lockBuffer(ANativeWindowBuffer* buffer); virtual int perform(int operation, va_list args); virtual int query(int what, int* value) const; virtual int queueBuffer(ANativeWindowBuffer* buffer); virtual int setSwapInterval(int interval); virtual int connect(int api); virtual int disconnect(int api); virtual int setBufferCount(int bufferCount); virtual int setBuffersDimensions(int w, int h); virtual int setBuffersFormat(int format); virtual int setScalingMode(int mode); virtual int setBuffersTransform(int transform); virtual int setBuffersTimestamp(int64_t timestamp); virtual int setCrop(Rect const* rect); virtual int setUsage(uint32_t reqUsage); virtual int lock(ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds); virtual int unlockAndPost(); enum { MIN_UNDEQUEUED_BUFFERS = SurfaceTexture::MIN_UNDEQUEUED_BUFFERS }; enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS }; enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 }; private: void freeAllBuffers(); int getSlotFromBufferLocked(android_native_buffer_t* buffer) const; // mSurfaceTexture is the interface to the surface texture server. All // operations on the surface texture client ultimately translate into // interactions with the server using this interface. sp mSurfaceTexture; // mAllocator is the binder object that is referenced to prevent the // dequeued buffers from being freed prematurely. sp mAllocator; // mSlots stores the buffers that have been allocated for each buffer slot. // It is initialized to null pointers, and gets filled in with the result of // ISurfaceTexture::requestBuffer when the client dequeues a buffer from a // slot that has not yet been used. The buffer allocated to a slot will also // be replaced if the requested buffer usage or geometry differs from that // of the buffer allocated to a slot. sp mSlots[NUM_BUFFER_SLOTS]; // mReqWidth is the buffer width that will be requested at the next dequeue // operation. It is initialized to 1. uint32_t mReqWidth; // mReqHeight is the buffer height that will be requested at the next deuque // operation. It is initialized to 1. uint32_t mReqHeight; // mReqFormat is the buffer pixel format that will be requested at the next // deuque operation. It is initialized to PIXEL_FORMAT_RGBA_8888. uint32_t mReqFormat; // mReqUsage is the set of buffer usage flags that will be requested // at the next deuque operation. It is initialized to 0. uint32_t mReqUsage; // mTimestamp is the timestamp that will be used for the next buffer queue // operation. It defaults to NATIVE_WINDOW_TIMESTAMP_AUTO, which means that // a timestamp is auto-generated when queueBuffer is called. int64_t mTimestamp; // mQueryWidth is the width returned by query(). It is set to width // of the last dequeued buffer or to mReqWidth if no buffer was dequeued. uint32_t mQueryWidth; // mQueryHeight is the height returned by query(). It is set to height // of the last dequeued buffer or to mReqHeight if no buffer was dequeued. uint32_t mQueryHeight; // mQueryFormat is the format returned by query(). It is set to the last // dequeued format or to mReqFormat if no buffer was dequeued. uint32_t mQueryFormat; // mMutex is the mutex used to prevent concurrent access to the member // variables of SurfaceTexture objects. It must be locked whenever the // member variables are accessed. mutable Mutex mMutex; // must be used from the lock/unlock thread sp mLockedBuffer; sp mPostedBuffer; mutable Region mOldDirtyRegion; bool mConnectedToCpu; }; }; // namespace android #endif // ANDROID_GUI_SURFACETEXTURECLIENT_H