protected virtual void SetStructure(Guid guidPropSet, int propId, System.Type structureType, object structValue)
{
Guid propertyGuid = guidPropSet;
IKsPropertySet propertySet = _captureFilter as IKsPropertySet;
KSPropertySupport IsTypeSupported = 0;
if (propertySet == null)
{
AppLogger.Message("SetStructure() properySet=null");
return;
}
int hr = propertySet.QuerySupported(propertyGuid, propId, out IsTypeSupported);
if (hr != 0 || (IsTypeSupported & KSPropertySupport.Set) == 0)
{
AppLogger.Message("GetString() GetStructure is not supported");
return;
}
int iSize = Marshal.SizeOf(structureType);
IntPtr pDataReturned = Marshal.AllocCoTaskMem(iSize);
Marshal.StructureToPtr(structValue, pDataReturned, true);
hr = propertySet.Set(propertyGuid, propId, pDataReturned, (int)iSize, pDataReturned, (int)iSize);
if (hr != 0)
{
AppLogger.Message(String.Format("SetStructure() failed 0x{0:X}", hr));
}
Marshal.FreeCoTaskMem(pDataReturned);
}
public object GetStructure(Guid guidPropSet, int propId, System.Type structureType)
{
Guid propertyGuid = guidPropSet;
IKsPropertySet propertySet = _captureFilter as IKsPropertySet;
KSPropertySupport IsTypeSupported = 0;
int uiSize;
if (propertySet == null)
{
AppLogger.Message("GetStructure() properySet=null");
return(null);
}
int hr = propertySet.QuerySupported(propertyGuid, propId, out IsTypeSupported);
if (hr != 0 || (IsTypeSupported & KSPropertySupport.Get) == 0)
{
AppLogger.Message("GetString() GetStructure is not supported");
return(null);
}
object objReturned = null;
IntPtr pDataReturned = Marshal.AllocCoTaskMem(1000);
hr = propertySet.Get(propertyGuid, propId, IntPtr.Zero, 0, pDataReturned, 1000, out uiSize);
if (hr == 0)
{
objReturned = Marshal.PtrToStructure(pDataReturned, structureType);
}
else
{
AppLogger.Message(String.Format("GetStructure() failed 0x{0:X}", hr));
}
Marshal.FreeCoTaskMem(pDataReturned);
return(objReturned);
}
private bool SupportFor(KSProperties.CameraControlFeature feature)
{
KSPropertySupport supported = new KSPropertySupport();
_ksPropertySet.QuerySupported(PROPSETID_VIDCAP_CAMERACONTROL, (int)feature, out supported);
return(supported.HasFlag(KSPropertySupport.Set) && supported.HasFlag(KSPropertySupport.Get));
}
public int QuerySupported(Guid guidPropSet, int dwPropID, out KSPropertySupport pTypeSupport)
{
pTypeSupport = KSPropertySupport.Get;
if (guidPropSet != PropSetID.Pin)
{
return(E_PROP_SET_UNSUPPORTED);
}
if (dwPropID != (int)AMPropertyPin.Category)
{
return(E_PROP_ID_UNSUPPORTED);
}
return(S_OK);
}
public int QuerySupported(Guid guidPropSet, int dwPropID, out KSPropertySupport pTypeSupport)
{
#if HAMED_LOG_METHOD_INFO
MethodBase method = new StackTrace().GetFrame(0).GetMethod();
Console.WriteLine(this.GetType().FullName + " - " + method.Name + " - " + method.ToString());
#endif
pTypeSupport = KSPropertySupport.Get;
if (guidPropSet != PropSetID.Pin)
{
return(E_PROP_SET_UNSUPPORTED);
}
if (dwPropID != (int)AMPropertyPin.Category)
{
return(E_PROP_ID_UNSUPPORTED);
}
return(S_OK);
}
/// <summary>
/// Set broadcast frequency using the IKsProperySet interface.
/// </summary>
/// <param name="Freq"></param>
/// <returns></returns>
public int SetFrequency(int Freq)
{
int hr;
IKsPropertySet pKs = _tvTuner as IKsPropertySet;
DirectShowLib.KSPropertySupport dwSupported = new KSPropertySupport();
DshowError errorCode = DshowError.VFW_NO_ERROR;
// Use IKsProperySet interface (interface for Vfw like property
// window) for getting/setting tuner specific information.
// Check first if the Property is supported.
if (pKs == null)
{
errorCode = DshowError.VFW_E_NO_INTERFACE;
return((int)errorCode);
}
// Use IKsProperySet interface (interface for Vfw like propery
// window) for getting and setting tuner specific information
// like the real broadcast frequency.
hr = pKs.QuerySupported(
PROPSETID_TUNER,
(int)KSPROPERTY_TUNER.TUNER_FREQUENCY,
out dwSupported);
if (hr == 0)
{
if (((dwSupported & DirectShowLib.KSPropertySupport.Get) == DirectShowLib.KSPropertySupport.Get) &&
((dwSupported & DirectShowLib.KSPropertySupport.Set) == DirectShowLib.KSPropertySupport.Set) &
(Freq >= this.minFrequency && Freq <= this.maxFrequency))
{
// Create and prepare data structures
KSPROPERTY_TUNER_FREQUENCY_S Frequency = new KSPROPERTY_TUNER_FREQUENCY_S();
IntPtr freqData = Marshal.AllocCoTaskMem(Marshal.SizeOf(Frequency));
IntPtr instData = Marshal.AllocCoTaskMem(Marshal.SizeOf(Frequency.Instance));
int cbBytes = 0;
// Convert the data
Marshal.StructureToPtr(Frequency, freqData, true);
Marshal.StructureToPtr(Frequency.Instance, instData, true);
hr = pKs.Get(
PROPSETID_TUNER,
(int)KSPROPERTY_TUNER.TUNER_FREQUENCY,
instData,
Marshal.SizeOf(Frequency.Instance),
freqData,
Marshal.SizeOf(Frequency),
out cbBytes);
if (hr == 0)
{
// Specify the TV broadcast frequency and tuning flag
Frequency.Instance.Frequency = Freq;
Frequency.Instance.TuningFlags = (int)KS_TUNER_TUNING_FLAGS.TUNING_EXACT;
// Convert the data
Marshal.StructureToPtr(Frequency, freqData, true);
Marshal.StructureToPtr(Frequency.Instance, instData, true);
// Now change the broadcast frequency
hr = pKs.Set(
PROPSETID_TUNER,
(int)KSPROPERTY_TUNER.TUNER_FREQUENCY,
instData,
Marshal.SizeOf(Frequency.Instance),
freqData,
Marshal.SizeOf(Frequency));
if (hr < 0)
{
errorCode = (DshowError)hr;
}
}
else
{
errorCode = (DshowError)hr;
}
if (freqData != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(freqData);
}
if (instData != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(instData);
}
}
}
else
{ // QuerySupported
errorCode = (DshowError)hr;
}
return((int)errorCode);
}
public int QuerySupported(Guid guidPropSet, int dwPropId, out KSPropertySupport pTypeSupport)
{
pTypeSupport = KSPropertySupport.Get;
if (guidPropSet != PropSetID.Pin)
{
return EPropSetUnsupported;
}
if (dwPropId != (int)AMPropertyPin.Category)
{
return EPropIdUnsupported;
}
return S_OK;
}
public int QuerySupported(Guid guidPropSet, int dwPropID, out KSPropertySupport pTypeSupport)
{
pTypeSupport = KSPropertySupport.Get;
if (guidPropSet != PropSetID.Pin)
{
return E_PROP_SET_UNSUPPORTED;
}
if (dwPropID != (int)AMPropertyPin.Category)
{
return E_PROP_ID_UNSUPPORTED;
}
return S_OK;
}
private bool SupportFor(KSProperties.CameraControlFeature feature)
{
KSPropertySupport supported = new KSPropertySupport();
_ksPropertySet.QuerySupported(PROPSETID_VIDCAP_CAMERACONTROL,(int)feature, out supported);
return (supported.HasFlag(KSPropertySupport.Set) && supported.HasFlag(KSPropertySupport.Get));
}
