121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
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/******************************************************************************
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Copyright (C), 2001-2016, Allwinner Tech. Co., Ltd.
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******************************************************************************
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File Name : CallbackDispatcher.h
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Version : Initial Draft
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Author : Allwinner BU3-PD2 Team
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Created : 2016/04/29
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Last Modified :
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Description : camera wrap MPP components.
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Function List :
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History :
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******************************************************************************/
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#ifndef __IPCLINUX_CALLBACK_DISPATCHER_H__
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#define __IPCLINUX_CALLBACK_DISPATCHER_H__
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#include "plat_type.h"
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#include "plat_errno.h"
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#include "plat_defines.h"
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#include "plat_math.h"
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#include "Errors.h"
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#include <utils/Thread.h>
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#include <utils/Mutex.h>
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#include <utils/Condition.h>
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#include <CMediaMemory.h>
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#include <list>
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#include <vector>
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#include <memory>
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namespace EyeseeLinux
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{
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/**
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*
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* Defines a message containing a description and arbitrary data object that can be
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* sent to a {@link Handler}. This object contains two extra int fields and an
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* extra object field that allow you to not do allocations in many cases.
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*
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* <p class="note">While the constructor of Message is public, the best way to get
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* one of these is to call {@link #obtain Message.obtain()} or one of the
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* {@link Handler#obtainMessage Handler.obtainMessage()} methods, which will pull
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* them from a pool of recycled objects.</p>
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*/
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struct CallbackMessage
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{
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/**
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* User-defined message code so that the recipient can identify
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* what this message is about. Each {@link Handler} has its own name-space
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* for message codes, so you do not need to worry about yours conflicting
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* with other handlers.
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*/
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int what;
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/**
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* arg1 and arg2 are lower-cost alternatives to using
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* {@link #setData(Bundle) setData()} if you only need to store a
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* few integer values.
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*/
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int arg1;
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int arg2;
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/**
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* extArgs are used to store more args.
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*/
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std::vector<int> extArgs;
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/**
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* An arbitrary object to send to the recipient. When using
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* {@link Messenger} to send the message across processes this can only
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* be non-null if it contains a Parcelable of a framework class (not one
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* implemented by the application). For other data transfer use
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* {@link #setData}.
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*
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* <p>Note that Parcelable objects here are not supported prior to
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* the {@link android.os.Build.VERSION_CODES#FROYO} release.
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*/
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//const void *obj;
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std::shared_ptr<const CMediaMemory> mDataPtr;
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};
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class CallbackDispatcher
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{
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public:
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CallbackDispatcher();
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void post(const CallbackMessage &msg);
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bool loop();
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void removeCallbacksAndMessages(CallbackMessage* token);
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protected:
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virtual ~CallbackDispatcher();
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protected:
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class CallbackDispatcherThread : public Thread
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{
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public:
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CallbackDispatcherThread(CallbackDispatcher *dispatcher)
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: mpDispatcher(dispatcher)
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{
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}
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private:
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virtual bool threadLoop();
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private:
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CallbackDispatcher *mpDispatcher;
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};
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private:
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Mutex mLock;
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bool mbDone;
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Condition mQueueChanged;
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std::list<CallbackMessage> mQueue;
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CallbackDispatcherThread *mpDispatcherThread;
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void dispatch(const CallbackMessage &msg);
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virtual void handleMessage(const CallbackMessage &msg)=0;
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};
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}; /* namespace EyeseeLinux */
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#endif /* __IPCLINUX_CALLBACK_DISPATCHER_H__ */
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