object.h

audio-video-codecs.rar语音编解码器

//
//               INTEL CORPORATION PROPRIETARY INFORMATION
//  This software is supplied under the terms of a license agreement or
//  nondisclosure agreement with Intel Corporation and may not be copied
//  or disclosed except in accordance with the terms of that agreement.
//        Copyright (c) 2005-2006 Intel Corporation. All Rights Reserved.
//

#ifndef __OBJECT_H
#define __OBJECT_H

#include "vm_strings.h"
#include "vm_shared_object.h"

class Object
{
public:
    Object*   m_pnext;
//    Object*   m_pprev;
public:
        virtual ~Object(void) = 0;

        virtual void*    Create() = 0;
        virtual void     Destroy(void*) = 0;
        virtual vm_char* GetName() = 0;
        virtual vm_char* GetVersion() = 0;
        virtual int      Try(void*) = 0; /* <0 - not implemented,
                                            =0 - not supported,
                                            >0 - supported       */
    virtual vm_char* GetObjectType(void) = 0;
//    static  vm_char* GetStaticObjectType(void);
};

struct ObjectsList
{
    Object*      p_begin;
    ObjectsList* p_next;
    vm_so_handle handle;


    static ObjectsList* Load(vm_char*, vm_char* = NULL);
    static bool         Free(ObjectsList*);
};

bool ObjectReg(Object*);

extern ObjectsList g_static_objects_list;

#define OBJECT_TYPE_DECL()\
    public:\
    static  vm_char* m_object_type;\
    virtual vm_char* GetObjectType();\
    static  vm_char* GetStaticObjectType();

#define OBJECT_TYPE_IMPL(class_name)\
vm_char* class_name::m_object_type = VM_STRING(#class_name);\
vm_char* class_name::GetObjectType(){ return m_object_type;}\
vm_char* class_name::GetStaticObjectType(){ return m_object_type;}

bool ObjectTypeCheck(Object* p_object);

template <class T>
bool ObjectTypeCheck(T* p_object)
{
    return !vm_string_strcmp(T::GetStaticObjectType(),p_object->GetObjectType());
}

#endif//__OBJECT_H