| /* |
| * 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 <gui/BufferQueue.h> |
| |
| #include <ui/ANativeObjectBase.h> |
| #include <ui/Region.h> |
| |
| #include <utils/RefBase.h> |
| #include <utils/threads.h> |
| #include <utils/KeyedVector.h> |
| |
| struct ANativeWindow_Buffer; |
| |
| namespace android { |
| |
| class Surface; |
| |
| class SurfaceTextureClient |
| : public ANativeObjectBase<ANativeWindow, SurfaceTextureClient, RefBase> |
| { |
| public: |
| |
| SurfaceTextureClient(const sp<ISurfaceTexture>& surfaceTexture); |
| |
| // SurfaceTextureClient is overloaded to assist in refactoring ST and BQ. |
| // SurfaceTexture is no longer an ISurfaceTexture, so client code |
| // calling the original constructor will fail. Thus this convenience method |
| // passes in the surfaceTexture's bufferQueue to the init method. |
| SurfaceTextureClient(const sp<SurfaceTexture>& surfaceTexture); |
| |
| sp<ISurfaceTexture> getISurfaceTexture() const; |
| |
| protected: |
| SurfaceTextureClient(); |
| virtual ~SurfaceTextureClient(); |
| void setISurfaceTexture(const sp<ISurfaceTexture>& 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 dispatchSetBuffersUserDimensions(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); |
| int dispatchSetActiveRect(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 setBuffersUserDimensions(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(); |
| virtual int setActiveRect(Rect const* rect); |
| |
| enum { NUM_BUFFER_SLOTS = BufferQueue::NUM_BUFFER_SLOTS }; |
| enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 }; |
| |
| private: |
| void freeAllBuffers(); |
| int getSlotFromBufferLocked(android_native_buffer_t* buffer) const; |
| |
| struct BufferSlot { |
| sp<GraphicBuffer> buffer; |
| Region dirtyRegion; |
| }; |
| |
| // 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; |
| |
| // 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. |
| BufferSlot 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 |
| // dequeue 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; |
| |
| // mCrop is the crop rectangle that will be used for the next buffer |
| // that gets queued. It is set by calling setCrop. |
| Rect mCrop; |
| |
| // mScalingMode is the scaling mode that will be used for the next |
| // buffers that get queued. It is set by calling setScalingMode. |
| int mScalingMode; |
| |
| // mTransform is the transform identifier that will be used for the next |
| // buffer that gets queued. It is set by calling setTransform. |
| uint32_t mTransform; |
| |
| // mActiveRect is the active rectangle that will be used for the next buffer |
| // that gets queued. It is set by calling setActiveRect. |
| Rect mActiveRect; |
| |
| // mDefaultWidth is default width of the buffers, regardless of the |
| // native_window_set_buffers_dimensions call. |
| uint32_t mDefaultWidth; |
| |
| // mDefaultHeight is default height of the buffers, regardless of the |
| // native_window_set_buffers_dimensions call. |
| uint32_t mDefaultHeight; |
| |
| // mUserWidth, if non-zero, is an application-specified override |
| // of mDefaultWidth. This is lower priority than the width set by |
| // native_window_set_buffers_dimensions. |
| uint32_t mUserWidth; |
| |
| // mUserHeight, if non-zero, is an application-specified override |
| // of mDefaultHeight. This is lower priority than the height set |
| // by native_window_set_buffers_dimensions. |
| uint32_t mUserHeight; |
| |
| // mTransformHint is the transform probably applied to buffers of this |
| // window. this is only a hint, actual transform may differ. |
| uint32_t mTransformHint; |
| |
| // mConsumerRunningBehind whether the consumer is running more than |
| // one buffer behind the producer. |
| mutable bool mConsumerRunningBehind; |
| |
| // 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<GraphicBuffer> mLockedBuffer; |
| sp<GraphicBuffer> mPostedBuffer; |
| bool mConnectedToCpu; |
| |
| // must be accessed from lock/unlock thread only |
| Region mDirtyRegion; |
| }; |
| |
| }; // namespace android |
| |
| #endif // ANDROID_GUI_SURFACETEXTURECLIENT_H |