com.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.

/*****************************************************************************
*  com.c : our implementation of COM
*  REALmagic Quasar Hardware Library
*  Created by Michael Ignaszewski
*  Copyright Sigma Designs Inc
*  Sigma Designs Proprietary and confidential
*  Created on 8/27/99
*  Description:
*****************************************************************************/

#include "pch.h"
#include "template.h"

// General Module Definitions
int g_cTemplates = sizeof(g_Templates) / sizeof(g_Templates[0]);

//called by COM to get the class factory object for a given class
HRESULT ModCreateInstance(DWORD dwInstance, QIID*  rclsid, QIID* riid, LPVOID * ppv)
{
	int i = 0;
    // traverse the array of templates looking for one with this
    // class id
    for (i = 0; i < g_cTemplates; i++) {
        CSDFactoryTemplate * pT = &g_Templates[i];
        if (pT->m_QIID == (QIID*)rclsid)
		{
            // found a template - make a class factory based on this
            // template

			if (pT->m_lpfnNew != NULL)
				pT->m_lpfnNew (ppv, dwInstance);
			else
				return CLASS_E_CLASSNOTAVAILABLE;
            if (*ppv == NULL) {
                return E_OUTOFMEMORY;
            }
            return NOERROR;
        }
    }
    return CLASS_E_CLASSNOTAVAILABLE;
}