repos_ecs/其他2015后/光盘刻录类/CDBurn_imapi/FileObject.cpp

// FileObject.cpp : implementation file
//



#include "stdafx.h"
#include "FileObject.h"
#include "file64.h"

#define SECTOR_SIZE	2048

// CFileObject
IMPLEMENT_DYNAMIC(CFileObject, CBaseObject)

CFileObject::CFileObject(const CString& filePath)
: CBaseObject(filePath)
, m_pStream(NULL)
{
}

CFileObject::~CFileObject()
{
    if (m_pStream != NULL)
        m_pStream->Release();
}


// CFileObject member functions

ULONGLONG CFileObject::GetSizeOnDisc()
{
    CFileStatus64 status;
    if (CFile64::GetStatus(m_path, status))
    {
        if (status.m_size > 0)
        {
            return ((status.m_size / SECTOR_SIZE) + 1) * SECTOR_SIZE;
        }
    }

    return 0;
}

IStream* CFileObject::GetStream()
{
    if (m_pStream == NULL)
    {
		USES_CONVERSION;
        SHCreateStreamOnFileEx(A2W(m_path), 
            STGM_READ|STGM_SHARE_DENY_NONE|STGM_DELETEONRELEASE,
            FILE_ATTRIBUTE_NORMAL, 
            FALSE, 
            NULL, 
            &m_pStream);
    }

    return m_pStream;
}