| /* |
| * 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 <gui/ISurfaceTexture.h> |
| #include <gui/SurfaceTexture.h> |
| |
| #include <ui/egl/android_natives.h> |
| |
| #include <utils/RefBase.h> |
| #include <utils/threads.h> |
| |
| namespace android { |
| |
| class SurfaceTextureClient |
| : public EGLNativeBase<ANativeWindow, SurfaceTextureClient, RefBase> |
| { |
| public: |
| SurfaceTextureClient(const sp<ISurfaceTexture>& surfaceTexture); |
| |
| private: |
| |
| // can't be copied |
| SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs); |
| SurfaceTextureClient(const SurfaceTextureClient& rhs); |
| |
| // ANativeWindow hooks |
| static int setSwapInterval(ANativeWindow* window, int interval); |
| static int dequeueBuffer(ANativeWindow* window, android_native_buffer_t** buffer); |
| static int cancelBuffer(ANativeWindow* window, android_native_buffer_t* buffer); |
| static int lockBuffer(ANativeWindow* window, android_native_buffer_t* buffer); |
| static int queueBuffer(ANativeWindow* window, android_native_buffer_t* buffer); |
| static int query(ANativeWindow* window, int what, int* value); |
| static int perform(ANativeWindow* window, int operation, ...); |
| |
| int setSwapInterval(int interval); |
| int dequeueBuffer(android_native_buffer_t** buffer); |
| int lockBuffer(android_native_buffer_t* buffer); |
| int queueBuffer(android_native_buffer_t* buffer); |
| int cancelBuffer(android_native_buffer_t* buffer); |
| int query(int what, int* value); |
| int perform(int operation, va_list args); |
| |
| int dispatchSetUsage(va_list args); |
| int dispatchConnect(va_list args); |
| int dispatchDisconnect(va_list args); |
| int dispatchSetCrop(va_list args); |
| int dispatchSetBufferCount(va_list args); |
| int dispatchSetBuffersGeometry(va_list args); |
| int dispatchSetBuffersTransform(va_list args); |
| |
| int connect(int api); |
| int disconnect(int api); |
| int setUsage(uint32_t reqUsage); |
| int setCrop(Rect const* rect); |
| int setBufferCount(int bufferCount); |
| int setBuffersGeometry(int w, int h, int format); |
| int setBuffersTransform(int transform); |
| |
| void freeAllBuffers(); |
| |
| enum { MIN_BUFFER_SLOTS = SurfaceTexture::MIN_BUFFER_SLOTS }; |
| enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS }; |
| enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 }; |
| |
| // 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<ISurfaceTexture> mSurfaceTexture; |
| |
| // mAllocator is the binder object that is referenced to prevent the |
| // dequeued buffers from being freed prematurely. |
| sp<IBinder> 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<GraphicBuffer> 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; |
| |
| // 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. |
| Mutex mMutex; |
| }; |
| |
| }; // namespace android |
| |
| #endif // ANDROID_GUI_SURFACETEXTURECLIENT_H |