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Diffstat (limited to 'widget/gonk/nativewindow/GonkConsumerBaseLL.h')
| -rw-r--r-- | widget/gonk/nativewindow/GonkConsumerBaseLL.h | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/widget/gonk/nativewindow/GonkConsumerBaseLL.h b/widget/gonk/nativewindow/GonkConsumerBaseLL.h deleted file mode 100644 index 0b2c2d166..000000000 --- a/widget/gonk/nativewindow/GonkConsumerBaseLL.h +++ /dev/null @@ -1,245 +0,0 @@ -/* - * Copyright (C) 2010 The Android Open Source Project - * Copyright (C) 2014 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_GONKCONSUMERBASE_LL_H -#define NATIVEWINDOW_GONKCONSUMERBASE_LL_H - -#include <ui/GraphicBuffer.h> - -#include <utils/String8.h> -#include <utils/Vector.h> -#include <utils/threads.h> -#include <gui/IConsumerListener.h> - -#include "GonkBufferQueueLL.h" - -namespace android { -// ---------------------------------------------------------------------------- - -class String8; - -// GonkConsumerBase is a base class for GonkBufferQueue consumer end-points. It -// handles common tasks like management of the connection to the GonkBufferQueue -// and the buffer pool. -class GonkConsumerBase : public virtual RefBase, - protected ConsumerListener { -public: - struct FrameAvailableListener : public virtual RefBase { - // onFrameAvailable() is called each time an additional frame becomes - // available for consumption. This means that frames that are queued - // while in asynchronous mode only trigger the callback if no previous - // frames are pending. Frames queued while in synchronous mode always - // trigger the callback. - // - // This is called without any lock held and can be called concurrently - // by multiple threads. - virtual void onFrameAvailable() = 0; - }; - - virtual ~GonkConsumerBase(); - - // abandon frees all the buffers and puts the GonkConsumerBase into the - // 'abandoned' state. Once put in this state the GonkConsumerBase can never - // leave it. When in the 'abandoned' state, all methods of the - // IGraphicBufferProducer interface will fail with the NO_INIT error. - // - // Note that while calling this method causes all the buffers to be freed - // from the perspective of the the GonkConsumerBase, if there are additional - // references on the buffers (e.g. if a buffer is referenced by a client - // or by OpenGL ES as a texture) then those buffer will remain allocated. - void abandon(); - - // set the name of the GonkConsumerBase that will be used to identify it in - // log messages. - void setName(const String8& name); - - // dump writes the current state to a string. Child classes should add - // their state to the dump by overriding the dumpLocked method, which is - // called by these methods after locking the mutex. - void dump(String8& result) const; - void dump(String8& result, const char* prefix) const; - - // setFrameAvailableListener sets the listener object that will be notified - // when a new frame becomes available. - void setFrameAvailableListener(const wp<FrameAvailableListener>& listener); - -private: - GonkConsumerBase(const GonkConsumerBase&); - void operator=(const GonkConsumerBase&); - -protected: - // GonkConsumerBase constructs a new GonkConsumerBase object to consume image - // buffers from the given IGonkGraphicBufferConsumer. - // The controlledByApp flag indicates that this consumer is under the application's - // control. - GonkConsumerBase(const sp<IGonkGraphicBufferConsumer>& consumer, bool controlledByApp = false); - - // onLastStrongRef gets called by RefBase just before the dtor of the most - // derived class. It is used to clean up the buffers so that GonkConsumerBase - // can coordinate the clean-up by calling into virtual methods implemented - // by the derived classes. This would not be possible from the - // ConsuemrBase dtor because by the time that gets called the derived - // classes have already been destructed. - // - // This methods should not need to be overridden by derived classes, but - // if they are overridden the GonkConsumerBase implementation must be called - // from the derived class. - virtual void onLastStrongRef(const void* id); - - // Implementation of the IConsumerListener interface. These - // calls are used to notify the GonkConsumerBase of asynchronous events in the - // GonkBufferQueue. The onFrameAvailable and onBuffersReleased methods should - // not need to be overridden by derived classes, but if they are overridden - // the GonkConsumerBase implementation must be called from the derived class. - // The GonkConsumerBase version of onSidebandStreamChanged does nothing and can - // be overriden by derived classes if they want the notification. -#if ANDROID_VERSION == 21 - virtual void onFrameAvailable(); -#else - virtual void onFrameAvailable(const ::android::BufferItem& item); - virtual void onFrameReplaced(const ::android::BufferItem& item) {}; -#endif - virtual void onBuffersReleased(); - virtual void onSidebandStreamChanged(); - - // freeBufferLocked frees up the given buffer slot. If the slot has been - // initialized this will release the reference to the GraphicBuffer in that - // slot. Otherwise it has no effect. - // - // Derived classes should override this method to clean up any state they - // keep per slot. If it is overridden, the derived class's implementation - // must call GonkConsumerBase::freeBufferLocked. - // - // This method must be called with mMutex locked. - virtual void freeBufferLocked(int slotIndex); - - // abandonLocked puts the GonkBufferQueue into the abandoned state, causing - // all future operations on it to fail. This method rather than the public - // abandon method should be overridden by child classes to add abandon- - // time behavior. - // - // Derived classes should override this method to clean up any object - // state they keep (as opposed to per-slot state). If it is overridden, - // the derived class's implementation must call GonkConsumerBase::abandonLocked. - // - // This method must be called with mMutex locked. - virtual void abandonLocked(); - - // dumpLocked dumps the current state of the GonkConsumerBase object to the - // result string. Each line is prefixed with the string pointed to by the - // prefix argument. The buffer argument points to a buffer that may be - // used for intermediate formatting data, and the size of that buffer is - // indicated by the size argument. - // - // Derived classes should override this method to dump their internal - // state. If this method is overridden the derived class's implementation - // should call GonkConsumerBase::dumpLocked. - // - // This method must be called with mMutex locked. - virtual void dumpLocked(String8& result, const char* prefix) const; - - // acquireBufferLocked fetches the next buffer from the GonkBufferQueue and - // updates the buffer slot for the buffer returned. - // - // Derived classes should override this method to perform any - // initialization that must take place the first time a buffer is assigned - // to a slot. If it is overridden the derived class's implementation must - // call GonkConsumerBase::acquireBufferLocked. - virtual status_t acquireBufferLocked(IGonkGraphicBufferConsumer::BufferItem *item, - nsecs_t presentWhen); - - // releaseBufferLocked relinquishes control over a buffer, returning that - // control to the GonkBufferQueue. - // - // Derived classes should override this method to perform any cleanup that - // must take place when a buffer is released back to the GonkBufferQueue. If - // it is overridden the derived class's implementation must call - // GonkConsumerBase::releaseBufferLocked. - virtual status_t releaseBufferLocked(int slot, const sp<GraphicBuffer> graphicBuffer); - - // returns true iff the slot still has the graphicBuffer in it. - bool stillTracking(int slot, const sp<GraphicBuffer> graphicBuffer); - - // addReleaseFence* adds the sync points associated with a fence to the set - // of sync points that must be reached before the buffer in the given slot - // may be used after the slot has been released. This should be called by - // derived classes each time some asynchronous work is kicked off that - // references the buffer. - status_t addReleaseFence(int slot, - const sp<GraphicBuffer> graphicBuffer, const sp<Fence>& fence); - status_t addReleaseFenceLocked(int slot, - const sp<GraphicBuffer> graphicBuffer, const sp<Fence>& fence); - - // Slot contains the information and object references that - // GonkConsumerBase maintains about a GonkBufferQueue buffer slot. - struct Slot { - // mGraphicBuffer is the Gralloc buffer store in the slot or NULL if - // no Gralloc buffer is in the slot. - sp<GraphicBuffer> mGraphicBuffer; - - // mFence is a fence which will signal when the buffer associated with - // this buffer slot is no longer being used by the consumer and can be - // overwritten. The buffer can be dequeued before the fence signals; - // the producer is responsible for delaying writes until it signals. - sp<Fence> mFence; - - // the frame number of the last acquired frame for this slot - uint64_t mFrameNumber; - }; - - // mSlots stores the buffers that have been allocated by the GonkBufferQueue - // for each buffer slot. It is initialized to null pointers, and gets - // filled in with the result of GonkBufferQueue::acquire 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. - Slot mSlots[GonkBufferQueue::NUM_BUFFER_SLOTS]; - - // mAbandoned indicates that the GonkBufferQueue will no longer be used to - // consume images buffers pushed to it using the IGraphicBufferProducer - // interface. It is initialized to false, and set to true in the abandon - // method. A GonkBufferQueue that has been abandoned will return the NO_INIT - // error from all IConsumerBase methods capable of returning an error. - bool mAbandoned; - - // mName is a string used to identify the GonkConsumerBase in log messages. - // It can be set by the setName method. - String8 mName; - - // mFrameAvailableListener is the listener object that will be called when a - // new frame becomes available. If it is not NULL it will be called from - // queueBuffer. - wp<FrameAvailableListener> mFrameAvailableListener; - - // The GonkConsumerBase has-a GonkBufferQueue and is responsible for creating this object - // if none is supplied - sp<IGonkGraphicBufferConsumer> mConsumer; - - // mMutex is the mutex used to prevent concurrent access to the member - // variables of GonkConsumerBase objects. It must be locked whenever the - // member variables are accessed or when any of the *Locked methods are - // called. - // - // This mutex is intended to be locked by derived classes. - mutable Mutex mMutex; -}; - -// ---------------------------------------------------------------------------- -}; // namespace android - -#endif // NATIVEWINDOW_GONKCONSUMERBASE_LL_H |