cobject.c

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

/*****************************************************************************
*  CObject.c : Implementation of CObject class 
*  REALmagic Quasar Hardware Library
*  Created by Michael Ignaszewski
*  Copyright Sigma Designs Inc
*  Sigma Designs Proprietary and confidential
*  Created on 8/27/98
*  Description:
*****************************************************************************/

// Implementation of CObject object.
#include "pch.h"

#include "cobject.h"

// CObject vtable definition
IObjectVtbl g_CObjectlpVtbl  = {CObject__Delete};

/////////////////////////////////////////////////////////////////////
// CObject New 
//@func void | CObject__New | Create a new instance of a CObject object.
//@parm CObject** | ppCObject | return address of the object we are about to create.
//@parm TCHAR* | pName | friendly name of the object.
//@parm BOOL | bAllocate | if TRUE we allocate the memory for the object. If FALSE, the memory has already been allocated.
//@parm DWORD | dwInstance | instance of the driver.
//@parm void* | pModuleInfo | pointer to a ModuleInfo structure.
//@rdesc void
void CObject__New (CObject **ppCObject, TCHAR *pName, BOOL bAllocate, DWORD dwInstance)
{
	CObject *pCObject = *ppCObject;
	if (bAllocate)
	{
 		// Allocate Object
		*ppCObject = OSmalloc(sizeof(CObject));
		pCObject = *ppCObject;
		if(pCObject == NULL)
			return;
		OSmemset(pCObject, 0, sizeof(CObject));
	}
	pCObject->m_dwInstance = dwInstance;
#ifdef DEBUG
    pCObject->m_pFriendlyName = pName;
#endif

	// Init VTable
	pCObject->lpVtbl = &g_CObjectlpVtbl;

	// Init Members
 }

/////////////////////////////////////////////////////////////////////
// CObject Delete  
//@func void | CObject__Delete | Delete CObject object. 
//@parm IObject* | This | Pointer to the IObject interface.
//@parm BOOL | bDeleteObject | if TRUE, delete object, if FALSE the object will be deleted by the callee.
//@rdesc void
void CObject__Delete (IObject * This, BOOL bDeleteObject)
{
    CObject* pCObject = (CObject*) This;	 

	// Sanity check
	if (This == NULL)
		return;

	if (bDeleteObject)
	{
		// Delete Object
		OSfree(pCObject);
	}
}