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/****************************************************************************
HalDevice.cpp
Description: Lynx Application Programming Interface Header File
Created: David A. Hoatson, September 2000
Copyright 2000 Lynx Studio Technology, Inc.
This software contains the valuable TRADE SECRETS and CONFIDENTIAL INFORMATION
of Lynx Studio Technology, Inc. The software is protected under copyright
laws as an unpublished work of Lynx Studio Technology, Inc. Notice is
for informational purposes only and does not imply publication. The user
of this software may make copies of the software for use with products
manufactured by Lynx Studio Technology, Inc. or under license from
Lynx Studio Technology, Inc. and for no other use.
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
PURPOSE.
Environment:
4 spaces per tab
Revision History
When Who Description
--------- --- ------------------------------------------------------------
****************************************************************************/
#include <StdAfx.h>
#include "HalDevice.h"
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Open (PHALADAPTER pHalAdapter, ULONG ulDeviceNumber)
/////////////////////////////////////////////////////////////////////////////
{
m_pHalAdapter = pHalAdapter;
m_ulDeviceNumber = ulDeviceNumber;
m_pCallback = NULL;
m_usMode = MODE_STOP;
m_bInUse = FALSE;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Close ()
/////////////////////////////////////////////////////////////////////////////
{
Stop ();
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Start ()
/////////////////////////////////////////////////////////////////////////////
{
m_usMode = MODE_RUNNING;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Stop ()
/////////////////////////////////////////////////////////////////////////////
{
m_usMode = MODE_STOP;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::RegisterCallback (PHALCALLBACK pCallback, PVOID pContext1,
PVOID pContext2)
/////////////////////////////////////////////////////////////////////////////
{
m_pCallback = pCallback;
m_pContext1 = pContext1;
m_pContext2 = pContext2;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Acquire (void)
/////////////////////////////////////////////////////////////////////////////
{
if (m_bInUse)
return (HSTATUS_ALREADY_IN_USE);
m_bInUse = TRUE;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Release (void)
/////////////////////////////////////////////////////////////////////////////
{
if (m_bInUse)
m_bInUse = FALSE;
return (HSTATUS_OK);
}
/////////////////////////////////////////////////////////////////////////////
USHORT
CHalDevice::Service (ULONG ulReason)
/////////////////////////////////////////////////////////////////////////////
{
USHORT usStatus = HSTATUS_OK;
if (m_usMode == MODE_RUNNING) // DAH Added 2/24/2011 to protect from m_pCallback getting reset between the next two calls. This is not 100%.
{
if (m_pCallback)
usStatus = m_pCallback (ulReason, m_pContext1, m_pContext2);
#ifdef DEBUG
else
DB ('C', COLOR_BOLD_U);
#endif
}
return (usStatus);
}
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