public void TestQueryId()
{
IPin testPin = GetSmartTeeInputPin();
string idStr;
int hr = testPin.QueryId(out idStr);
Marshal.ThrowExceptionForHR(hr);
Assert.IsNotNull(idStr);
}
public static void SetFilterFormat(AMMediaType streamFormat, IBaseFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException("filter");
}
int hr;
IEnumPins pinsEnum = null;
try
{
hr = filter.EnumPins(out pinsEnum);
DsError.ThrowExceptionForHR(hr);
if (pinsEnum == null)
{
throw new SplicerException(Resources.ErrorPinsEnumeratorIsNull);
}
var pins = new IPin[1];
while (true)
{
try
{
int fetched = 0;
IntPtr pcFetched = Marshal.AllocCoTaskMem(4);
try
{
hr = pinsEnum.Next(pins.Length, pins, pcFetched);
DsError.ThrowExceptionForHR(hr);
fetched = Marshal.ReadInt32(pcFetched);
}
finally
{
Marshal.FreeCoTaskMem(pcFetched);
}
if (fetched == 1)
{
// we have something
IPin pin = pins[0];
string queryId;
hr = pin.QueryId(out queryId);
DsError.ThrowExceptionForHR(hr);
PinInfo pinInfo;
hr = pin.QueryPinInfo(out pinInfo);
DsError.ThrowExceptionForHR(hr);
if (pinInfo.dir != PinDirection.Output)
{
continue;
}
var streamConfig = (IAMStreamConfig)pin;
hr = streamConfig.SetFormat(streamFormat);
DsError.ThrowExceptionForHR(hr);
}
else
{
break;
}
}
finally
{
if (pins[0] != null)
{
Marshal.ReleaseComObject(pins[0]);
}
pins[0] = null;
}
}
}
finally
{
if (pinsEnum != null)
{
Marshal.ReleaseComObject(pinsEnum);
}
}
}
public static IList <PinQueryInfo> EnumeratePins(IBaseFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException("filter");
}
int hr = 0;
var pinsInfo = new List <PinQueryInfo>();
IEnumPins pinsEnum = null;
try
{
hr = filter.EnumPins(out pinsEnum);
DsError.ThrowExceptionForHR(hr);
if (pinsEnum == null)
{
throw new InvalidOperationException("pinsEnum is null");
}
var pins = new IPin[1];
while (true)
{
try
{
int fetched = 0;
IntPtr pcFetched = Marshal.AllocCoTaskMem(4);
try
{
hr = pinsEnum.Next(pins.Length, pins, pcFetched);
DsError.ThrowExceptionForHR(hr);
fetched = Marshal.ReadInt32(pcFetched);
}
finally
{
Marshal.FreeCoTaskMem(pcFetched);
}
if (fetched == 1)
{
// we have something
IPin pin = pins[0];
string queryId;
hr = pin.QueryId(out queryId);
DsError.ThrowExceptionForHR(hr);
PinInfo pinInfo;
hr = pin.QueryPinInfo(out pinInfo);
DsError.ThrowExceptionForHR(hr);
pinsInfo.Add(new PinQueryInfo(pinInfo.dir, pinInfo.name, queryId));
}
else
{
break;
}
}
finally
{
if (pins[0] != null)
{
Marshal.ReleaseComObject(pins[0]);
}
pins[0] = null;
}
}
}
finally
{
if (pinsEnum != null)
{
Marshal.ReleaseComObject(pinsEnum);
}
}
return(pinsInfo);
}
public static IEnumerator <WavFormatInfo> EnumerateFormatsForDirection(IBaseFilter filter, PinDirection direction)
{
if (filter == null)
{
throw new ArgumentNullException("filter");
}
int hr;
IEnumPins pinsEnum = null;
try
{
hr = filter.EnumPins(out pinsEnum);
DsError.ThrowExceptionForHR(hr);
if (pinsEnum == null)
{
throw new InvalidOperationException("pinsEnum is null");
}
IPin[] pins = new IPin[1];
while (true)
{
try
{
int pcFetched;
hr = pinsEnum.Next(pins.Length, pins, out pcFetched);
DsError.ThrowExceptionForHR(hr);
if (pcFetched == 1)
{
// we have something
IPin pin = pins[0];
string queryId;
hr = pin.QueryId(out queryId);
DsError.ThrowExceptionForHR(hr);
PinInfo pinInfo;
hr = pin.QueryPinInfo(out pinInfo);
DsError.ThrowExceptionForHR(hr);
if (pinInfo.dir != direction)
{
continue;
}
IEnumMediaTypes mediaTypesEnum = null;
try
{
hr = pin.EnumMediaTypes(out mediaTypesEnum);
DsError.ThrowExceptionForHR(hr);
AMMediaType[] mediaTypes = new AMMediaType[1];
int mtFetched;
while (true)
{
hr = mediaTypesEnum.Next(1, mediaTypes, out mtFetched);
DsError.ThrowExceptionForHR(hr);
if (mtFetched == 1)
{
if (mediaTypes[0].formatType == FormatType.WaveEx)
{
yield return(new WavFormatInfo(mediaTypes[0]));
}
}
else
{
break;
}
}
}
finally
{
if (mediaTypesEnum != null)
{
Marshal.ReleaseComObject(mediaTypesEnum);
}
}
}
else
{
break;
}
}
finally
{
if (pins[0] != null)
{
Marshal.ReleaseComObject(pins[0]);
}
pins[0] = null;
}
}
}
finally
{
if (pinsEnum != null)
{
Marshal.ReleaseComObject(pinsEnum);
}
}
}
public int Connect(IPin pReceivePin, AMMediaType pmt)
{
Monitor.Enter(this);
int hr = S_OK;
pin = null;
pintype = null;
allocator = null;
string id = "Unnamed pin";
pReceivePin.QueryId(out id);
PinInfo pi = new PinInfo();
hr = pReceivePin.QueryPinInfo(out pi);
if (hr == S_OK)
{
FilterInfo fi = new FilterInfo();
hr = pi.filter.QueryFilterInfo(out fi);
if (hr == S_OK)
{
id += (" (" + fi.achName);
}
Guid guid;
hr = pi.filter.GetClassID(out guid);
if (hr == S_OK)
{
id += (", " + guid.ToString());
}
id += ")";
}
try
{
AMMediaType amt = null;
if (pmt != null)
{
amt = pmt;
}
else
#if false
{
IEnumMediaTypes ie;
hr = pReceivePin.EnumMediaTypes(out ie);
int fetched;
int alloc = Marshal.SizeOf(typeof(AMMediaType));
IntPtr mtypePtr = Marshal.AllocCoTaskMem(alloc);
while (ie.Next(1, mtypePtr, out fetched) == S_OK)
{
amt = new AMMediaType();
Marshal.PtrToStructure(mtypePtr, amt);
hr = pReceivePin.QueryAccept(amt);
if (hr == S_OK)
{
break;
}
DsUtils.FreeAMMediaType(amt);
amt = null;
}
if (fetched == 0)
{
amt = null;
}
Marshal.FreeCoTaskMem(mtypePtr);
}
if (amt == null)
#endif
{
amt = mediatype;
}
hr = pReceivePin.QueryAccept(amt);
if (hr == S_FALSE)
{
log.InfoFormat("No media type for pin '{0}'", id);
Monitor.Exit(this);
return VFW_E_NO_ACCEPTABLE_TYPES;
}
hr = pReceivePin.ReceiveConnection(this, amt);
if (hr == VFW_E_TYPE_NOT_ACCEPTED)
{
log.InfoFormat("No connection to pin '{0}'", id);
Monitor.Exit(this);
return VFW_E_NO_ACCEPTABLE_TYPES;
}
DsError.ThrowExceptionForHR(hr);
pin = pReceivePin;
pintype = amt;
}
catch (Exception e)
{
LogUtil.ExceptionLog.ErrorFormat("Caught exception in connect ({0}): {1}{2}", id, e.Message, e.StackTrace);
pin = null;
pintype = null;
allocator = null;
Monitor.Exit(this);
return VFW_E_NO_TRANSPORT;
}
Monitor.Exit(this);
log.InfoFormat("Connected to pin '{0}'", id);
return S_OK;
}
