diff -r 000000000000 -r 6474c204b198 widget/gonk/nativewindow/GonkNativeWindowClientJB.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/widget/gonk/nativewindow/GonkNativeWindowClientJB.h Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,261 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * Copyright (C) 2013 Mozilla Foundation + * + * 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 NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H +#define NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H + +#if ANDROID_VERSION == 17 +#include +#else +#include +#endif + +#include +#include + +#include +#include +#include + +#include "GonkBufferQueue.h" + +struct ANativeWindow_Buffer; + +namespace android { + +/* + * An implementation of ANativeWindow that feeds graphics buffers into a + * BufferQueue. + * + * This is typically used by programs that want to render frames through + * some means (maybe OpenGL, a software renderer, or a hardware decoder) + * and have the frames they create forwarded to SurfaceFlinger for + * compositing. For example, a video decoder could render a frame and call + * eglSwapBuffers(), which invokes ANativeWindow callbacks defined by + * GonkNativeWindowClient. GonkNativeWindowClient then forwards the buffers through Binder IPC + * to the BufferQueue's producer interface, providing the new frame to a + * consumer such as GLConsumer. + */ +class GonkNativeWindowClient + : public ANativeObjectBase +{ +public: + + /* + * creates a GonkNativeWindowClient from the given IGraphicBufferProducer (which concrete + * implementation is a BufferQueue). + * + * GonkNativeWindowClient is mainly state-less while it's disconnected, it can be + * viewed as a glorified IGraphicBufferProducer holder. It's therefore + * safe to create other GonkNativeWindowClients from the same IGraphicBufferProducer. + * + * However, once a GonkNativeWindowClient is connected, it'll prevent other GonkNativeWindowClients + * referring to the same IGraphicBufferProducer to become connected and + * therefore prevent them to be used as actual producers of buffers. + */ + GonkNativeWindowClient(const sp& bufferProducer); + + /* getIGraphicBufferProducer() returns the IGraphicBufferProducer this + * GonkNativeWindowClient was created with. Usually it's an error to use the + * IGraphicBufferProducer while the GonkNativeWindowClient is connected. + */ +#if ANDROID_VERSION == 17 + sp getISurfaceTexture() const; +#else + sp getIGraphicBufferProducer() const; +#endif + + /* convenience function to check that the given surface is non NULL as + * well as its IGraphicBufferProducer */ +#if ANDROID_VERSION >= 18 + static bool isValid(const sp& surface) { + return surface != NULL && surface->getIGraphicBufferProducer() != NULL; + } +#endif + +protected: + virtual ~GonkNativeWindowClient(); + +private: + // can't be copied + GonkNativeWindowClient& operator = (const GonkNativeWindowClient& rhs); + GonkNativeWindowClient(const GonkNativeWindowClient& rhs); + + // ANativeWindow hooks + static int hook_cancelBuffer(ANativeWindow* window, + ANativeWindowBuffer* buffer, int fenceFd); + static int hook_dequeueBuffer(ANativeWindow* window, + ANativeWindowBuffer** buffer, int* fenceFd); + 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, int fenceFd); + static int hook_setSwapInterval(ANativeWindow* window, int interval); + + static int hook_cancelBuffer_DEPRECATED(ANativeWindow* window, + ANativeWindowBuffer* buffer); + static int hook_dequeueBuffer_DEPRECATED(ANativeWindow* window, + ANativeWindowBuffer** buffer); + static int hook_lockBuffer_DEPRECATED(ANativeWindow* window, + ANativeWindowBuffer* buffer); + static int hook_queueBuffer_DEPRECATED(ANativeWindow* window, + ANativeWindowBuffer* buffer); + + 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 dispatchSetPostTransformCrop(va_list args); + int dispatchSetUsage(va_list args); + int dispatchLock(va_list args); + int dispatchUnlockAndPost(va_list args); + +protected: + virtual int dequeueBuffer(ANativeWindowBuffer** buffer, int* fenceFd); + virtual int cancelBuffer(ANativeWindowBuffer* buffer, int fenceFd); + virtual int queueBuffer(ANativeWindowBuffer* buffer, int fenceFd); + virtual int perform(int operation, va_list args); + virtual int query(int what, int* value) const; + virtual int setSwapInterval(int interval); + + virtual int lockBuffer_DEPRECATED(ANativeWindowBuffer* buffer); + + 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); + +public: + virtual int lock(ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds); + virtual int unlockAndPost(); + +protected: + enum { NUM_BUFFER_SLOTS = GonkBufferQueue::NUM_BUFFER_SLOTS }; + enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 }; + +private: + void freeAllBuffers(); + int getSlotFromBufferLocked(android_native_buffer_t* buffer) const; + + struct BufferSlot { + sp 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 mBufferProducer; + + // 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 + // IGraphicBufferProducer::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; + + // 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 GonkNativeWindowClient 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; + bool mConnectedToCpu; + + // must be accessed from lock/unlock thread only + Region mDirtyRegion; +}; + +}; // namespace android + +#endif // NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H