本文整理汇总了C#中IPin.QueryAccept方法的典型用法代码示例。如果您正苦于以下问题：C# IPin.QueryAccept方法的具体用法？C# IPin.QueryAccept怎么用？C# IPin.QueryAccept使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IPin的用法示例。
在下文中一共展示了IPin.QueryAccept方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: TestMediaTypes
private static bool TestMediaTypes(IPin pin, IPin receiver)
{
bool ret = false;
IEnumMediaTypes types;
pin.EnumMediaTypes(out types);
types.Reset();
while (true)
{
AMMediaType[] mediaTypes = new AMMediaType[1];
int typesFetched;
int hr = types.Next(1, mediaTypes, out typesFetched);
if (hr != 0 || typesFetched == 0)
{
break;
}
//Log.Info("Check output type: {0}, {1}", mediaTypes[0].majorType,
// mediaTypes[0].subType);
if (receiver.QueryAccept(mediaTypes[0]) == 0)
{
//Log.Info("Accepted!");
ret = true;
break;
}
}
ReleaseComObject(types);
//Log.Info("-----EndofTypes");
return ret;
}示例2: QueryConnect
/// <summary>
/// QueryConnect checks if two Pins can be connected.
/// </summary>
/// <param name="pin">Pin 1</param>
/// <param name="other">Pin 2</param>
/// <returns>True if they accept connection</returns>
static bool QueryConnect(IPin pin, IPin other)
{
IEnumMediaTypes enumTypes;
int hr = pin.EnumMediaTypes(out enumTypes);
if (hr != 0 || enumTypes == null)
return false;
int count = 0;
IntPtr ptrFetched = Marshal.AllocCoTaskMem(4);
try
{
for (; ; )
{
AMMediaType[] types = new AMMediaType[1];
hr = enumTypes.Next(1, types, ptrFetched);
if (hr != 0 || Marshal.ReadInt32(ptrFetched) == 0)
break;
count++;
try
{
if (other.QueryAccept(types[0]) == 0)
return true;
}
finally
{
FilterGraphTools.FreeAMMediaType(types[0]);
}
}
PinInfo info;
PinInfo infoOther;
pin.QueryPinInfo(out info);
other.QueryPinInfo(out infoOther);
ServiceRegistration.Get<ILogger>().Info("Pins {0} and {1} do not accept each other. Tested {2} media types", info.name, infoOther.name, count);
FilterGraphTools.FreePinInfo(info);
FilterGraphTools.FreePinInfo(infoOther);
return false;
}
finally
{
Marshal.FreeCoTaskMem(ptrFetched);
}
}示例3: QueryConnect
public static bool QueryConnect(IPin pin, IPin other)
{
IEnumMediaTypes enumTypes;
int hr = pin.EnumMediaTypes(out enumTypes);
if (hr != 0 || enumTypes == null)
{
return false;
}
int count = 0;
for (;;)
{
AMMediaType[] types = new AMMediaType[1];
int fetched;
hr = enumTypes.Next(1, types, out fetched);
if (hr != 0 || fetched == 0)
{
break;
}
count++;
if (other.QueryAccept(types[0]) == 0)
{
return true;
}
}
PinInfo info;
PinInfo infoOther;
pin.QueryPinInfo(out info);
DsUtils.FreePinInfo(info);
other.QueryPinInfo(out infoOther);
DsUtils.FreePinInfo(infoOther);
Log.Info("Pins {0} and {1} do not accept each other. Tested {2} media types", info.name, infoOther.name, count);
return false;
}示例4: Connect
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;
}