oammodule.cpp

来自「基于NMS的video access 3.1编写的DEMO程序 实现2个功能 」· C++ 代码 · 共 52 行

#include "oammodule.h"
#include "oamdef.h"

CTAQUEUEHD TOamModule::m_ctaqueuehd;
CTAHD TOamModule::m_ctahd;
bool TOamModule::m_bInited = false;

bool TOamModule::Init()
{
	if(m_bInited)
			return true;
	
	CTA_EVENT event;
	if( 0 != ctaCreateQueue( NULL, 0, &m_ctaqueuehd))
		return false;
	if( 0!= ctaCreateContext(m_ctaqueuehd, 0, "cta://localhost/oamcontext",  &m_ctahd))
		return false;

	CTA_SERVICE_DESC  svcDescriptions[] = {{ { "OAM", "OAMMGR" }, {0},{0},{0} }};
	if( 0 != ctaOpenServices( m_ctahd, svcDescriptions, 1/*num*/))
		return false;

	ctaWaitEvent(m_ctaqueuehd, &event, CTA_WAIT_FOREVER/*forevenr*/);
	if((event.id != CTAEVN_OPEN_SERVICES_DONE) || (event.value != CTA_REASON_FINISHED))
		return false;

	m_bInited = true;
	return true;
}

bool TOamModule::GetKeyword(int board, const char *keyword, char *value, int size)
{
	if(!Init())
		return false;
	
	char boardname[80] = "";
	if( 0 != oamBoardLookupByNumber( m_ctahd, board, boardname, sizeof boardname))
		return false;

	HMOBJ boardobject;
	if( 0 != oamOpenObject(m_ctahd, boardname, &boardobject, OAM_READONLY))
		return false;
	if( 0 != oamGetKeyword( boardobject, keyword, value, size))
	{
		oamCloseObject(boardobject);
		return false;
	}

	oamCloseObject(boardobject);
	return true;
}