public static bool init()
{
DCAMAPI_INIT param = new DCAMAPI_INIT(0);
m_lasterr = dcamapi.init(ref param);
m_devcount = (m_lasterr.failed() ? 0 : param.iDeviceCount);
return(!m_lasterr.failed());
}
public bool dev_close()
{
if (m_hdcam == IntPtr.Zero)
{
return(true); // already closed
}
m_lasterr = dcamdev.close(m_hdcam);
if (!m_lasterr.failed())
{
m_hdcam = IntPtr.Zero;
}
return(!m_lasterr.failed());
}
public MyDcamWait(ref MyDcam mydcam)
{
if (mydcam.m_hdcam == IntPtr.Zero)
{
// mydcam should have valid HDCAM handle.
m_lasterr = DCAMERR.INVALIDHANDLE;
m_hwait = IntPtr.Zero;
}
else
{
DCAMWAIT_OPEN param = new DCAMWAIT_OPEN(0);
param.hdcam = mydcam.m_hdcam;
m_lasterr = dcamwait.open(ref param);
if (!m_lasterr.failed())
{
m_hwait = param.hwait;
m_supportevent = param.supportevent;
}
else
{
m_hwait = IntPtr.Zero;
m_supportevent = 0;
}
}
m_timeout = 1000; // 1 second
}
public bool setgetvalue(ref double value)
{
DCAMPROPOPTION _option = DCAMPROPOPTION.NONE;
m_lasterr = dcamprop.setgetvalue(m_hdcam, m_idProp, ref value, _option);
return(!m_lasterr.failed());
}
public bool start(DCAMWAIT eventmask, ref DCAMWAIT eventhappened)
{
if (m_hwait == IntPtr.Zero)
{
m_lasterr = DCAMERR.INVALIDWAITHANDLE;
}
else
{
DCAMWAIT_START param = new DCAMWAIT_START(eventmask);
param.timeout = m_timeout;
m_lasterr = dcamwait.start(m_hwait, ref param);
if (!m_lasterr.failed())
{
eventhappened = new DCAMWAIT(param.eventhappened);
}
}
return(!m_lasterr.failed());
}
public string getname()
{
string name = "";
m_lasterr = dcamprop.getname(m_hdcam, m_idProp, ref name);
if (m_lasterr.failed())
{
name = "";
}
return(name);
}
public bool dev_open(int iCamera)
{
DCAMDEV_OPEN param = new DCAMDEV_OPEN(iCamera);
m_lasterr = dcamdev.open(ref param);
if (m_lasterr.failed())
{
m_hdcam = IntPtr.Zero;
}
else
{
if (m_hdcam != IntPtr.Zero)
{
dcamdev.close(m_hdcam);
}
m_hdcam = param.hdcam;
}
return(!m_lasterr.failed());
}
public string getvaluetext(double value)
{
string ret;
ret = "";
m_lasterr = dcamprop.getvaluetext(m_hdcam, m_idProp, value, ref ret);
if (m_lasterr.failed())
{
ret = value.ToString();
}
return(ret);
}
// dcamdev_getcapability() is not supported in this code
// dev_getcapability( ByRef param As DCAMDEV_CAPABILITY) As Integer
// ---------------- buffer allocation and get ----------------
public bool buf_alloc(int framecount)
{
if (m_hdcam == IntPtr.Zero)
{
m_lasterr = DCAMERR.INVALIDHANDLE;
}
else
{
m_lasterr = dcambuf.alloc(m_hdcam, framecount);
}
return(!m_lasterr.failed());
}
public DCAMCAP_STATUS cap_status()
{
DCAMCAP_STATUS stat = DCAMCAP_STATUS.ERROR;
if (m_hdcam == IntPtr.Zero)
{
m_lasterr = DCAMERR.INVALIDHANDLE;
}
else
{
m_lasterr = dcamcap.status(m_hdcam, ref stat);
if (m_lasterr.failed())
{
stat = DCAMCAP_STATUS.ERROR;
}
}
return(stat);
}
public string dev_getstring(DCAMIDSTR iString)
{
string ret;
ret = "";
if (m_hdcam == IntPtr.Zero)
{
m_lasterr = DCAMERR.INVALIDHANDLE;
}
else
{
m_lasterr = dcamdev.getstring(m_hdcam, iString, ref ret);
if (m_lasterr.failed())
{
ret = ""; // return empty string when error happened.
}
}
return(ret);
}
public bool cap_transferinfo(ref int nNewestFrameIndex, ref int nFrameCount)
{
if (m_hdcam == IntPtr.Zero)
{
m_lasterr = DCAMERR.INVALIDHANDLE;
}
else
{
DCAMCAP_TRANSFERINFO param = new DCAMCAP_TRANSFERINFO(0);
m_lasterr = dcamcap.transferinfo(m_hdcam, ref param);
if (!m_lasterr.failed())
{
nNewestFrameIndex = param.nNewestFrameIndex;
nFrameCount = param.nFrameCount;
return(true);
}
}
nNewestFrameIndex = -1;
nFrameCount = 0;
return(false);
}
public bool setvalue(double value)
{
m_lasterr = dcamprop.setvalue(m_hdcam, m_idProp, value);
return(!m_lasterr.failed());
}
public static bool uninit()
{
m_lasterr = dcamapidll.dcamapi_uninit();
return(!m_lasterr.failed());
}
public bool update_attr()
{
m_attr.iProp = m_idProp;
m_lasterr = dcamprop.getattr(m_hdcam, ref m_attr);
return(!m_lasterr.failed());
}
public bool getvalue(ref double value)
{
m_lasterr = dcamprop.getvalue(m_hdcam, m_idProp, ref value);
return(!m_lasterr.failed());
}
public bool nextid()
{
m_lasterr = dcamprop.getnextid(m_hdcam, ref m_idProp, 0);
return(!m_lasterr.failed());
}
public bool queryvalue_next(ref double value)
{
m_lasterr = dcamprop.queryvalue(m_hdcam, m_idProp, ref value, DCAMPROPOPTION.NEXT);
return(!m_lasterr.failed());
}
public bool queryvalue(ref double value, DCAMPROPOPTION _option)
{
m_lasterr = dcamprop.queryvalue(m_hdcam, m_idProp, ref value, _option);
return(!m_lasterr.failed());
}