1b20cde313
This change passes a reference to the IGraphicBufferAlloc binder object to SurfaceTextureClient objects. When STC objects are created they query their associated ISurfaceTexture object for the IGraphicBufferAlloc that the SurfaceTexture uses to allocate buffers. Having the SurfaceTextureClient hold this reference prevents the GraphicBufferAlloc in SurfaceFlinger from freeing the allocated buffers before the SurfaceTextureClient is done with them. Change-Id: Ib8e30e8b37fdd60438cbb4cb7e9174d0ba6d661c related-bug: 3362519
123 lines
4.6 KiB
C++
123 lines
4.6 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GUI_SURFACETEXTURECLIENT_H
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#define ANDROID_GUI_SURFACETEXTURECLIENT_H
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#include <gui/ISurfaceTexture.h>
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#include <gui/SurfaceTexture.h>
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#include <ui/egl/android_natives.h>
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#include <utils/RefBase.h>
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#include <utils/threads.h>
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namespace android {
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class SurfaceTextureClient
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: public EGLNativeBase<ANativeWindow, SurfaceTextureClient, RefBase>
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{
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public:
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SurfaceTextureClient(const sp<ISurfaceTexture>& surfaceTexture);
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private:
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// can't be copied
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SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs);
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SurfaceTextureClient(const SurfaceTextureClient& rhs);
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// ANativeWindow hooks
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static int setSwapInterval(ANativeWindow* window, int interval);
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static int dequeueBuffer(ANativeWindow* window, android_native_buffer_t** buffer);
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static int cancelBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int lockBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int queueBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int query(ANativeWindow* window, int what, int* value);
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static int perform(ANativeWindow* window, int operation, ...);
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int setSwapInterval(int interval);
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int dequeueBuffer(android_native_buffer_t** buffer);
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int lockBuffer(android_native_buffer_t* buffer);
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int queueBuffer(android_native_buffer_t* buffer);
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int cancelBuffer(android_native_buffer_t* buffer);
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int query(int what, int* value);
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int perform(int operation, va_list args);
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int dispatchSetUsage(va_list args);
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int dispatchConnect(va_list args);
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int dispatchDisconnect(va_list args);
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int dispatchSetCrop(va_list args);
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int dispatchSetBufferCount(va_list args);
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int dispatchSetBuffersGeometry(va_list args);
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int dispatchSetBuffersTransform(va_list args);
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int connect(int api);
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int disconnect(int api);
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int setUsage(uint32_t reqUsage);
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int setCrop(Rect const* rect);
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int setBufferCount(int bufferCount);
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int setBuffersGeometry(int w, int h, int format);
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int setBuffersTransform(int transform);
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void freeAllBuffers();
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enum { MIN_BUFFER_SLOTS = SurfaceTexture::MIN_BUFFER_SLOTS };
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enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS };
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enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 };
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// mSurfaceTexture is the interface to the surface texture server. All
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// operations on the surface texture client ultimately translate into
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// interactions with the server using this interface.
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sp<ISurfaceTexture> mSurfaceTexture;
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// mAllocator is the binder object that is referenced to prevent the
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// dequeued buffers from being freed prematurely.
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sp<IBinder> mAllocator;
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// mSlots stores the buffers that have been allocated for each buffer slot.
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// It is initialized to null pointers, and gets filled in with the result of
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// ISurfaceTexture::requestBuffer when the client dequeues a buffer from a
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// slot that has not yet been used. The buffer allocated to a slot will also
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// be replaced if the requested buffer usage or geometry differs from that
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// of the buffer allocated to a slot.
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sp<GraphicBuffer> mSlots[NUM_BUFFER_SLOTS];
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// mReqWidth is the buffer width that will be requested at the next dequeue
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// operation. It is initialized to 1.
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uint32_t mReqWidth;
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// mReqHeight is the buffer height that will be requested at the next deuque
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// operation. It is initialized to 1.
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uint32_t mReqHeight;
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// mReqFormat is the buffer pixel format that will be requested at the next
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// deuque operation. It is initialized to PIXEL_FORMAT_RGBA_8888.
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uint32_t mReqFormat;
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// mReqUsage is the set of buffer usage flags that will be requested
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// at the next deuque operation. It is initialized to 0.
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uint32_t mReqUsage;
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// mMutex is the mutex used to prevent concurrent access to the member
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// variables of SurfaceTexture objects. It must be locked whenever the
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// member variables are accessed.
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Mutex mMutex;
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};
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}; // namespace android
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#endif // ANDROID_GUI_SURFACETEXTURECLIENT_H
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