本文整理汇总了C#中IBaseFilter.EnumPins方法的典型用法代码示例。如果您正苦于以下问题：C# IBaseFilter.EnumPins方法的具体用法？C# IBaseFilter.EnumPins怎么用？C# IBaseFilter.EnumPins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IBaseFilter的用法示例。
在下文中一共展示了IBaseFilter.EnumPins方法的15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: GetPin
/// <summary>
/// Get filter's pin.
/// </summary>
///
/// <param name="filter">Filter to get pin of.</param>
/// <param name="dir">Pin's direction.</param>
/// <param name="num">Pin's number.</param>
///
/// <returns>Returns filter's pin.</returns>
///
public static IPin GetPin( IBaseFilter filter, PinDirection dir, int num )
{
IPin[] pin = new IPin[1];
IEnumPins pinsEnum = null;
// enum filter pins
if ( filter.EnumPins( out pinsEnum ) == 0 )
{
PinDirection pinDir;
int n;
// get next pin
while ( pinsEnum.Next( 1, pin, out n ) == 0 )
{
// query pin`s direction
pin[0].QueryDirection( out pinDir );
if ( pinDir == dir )
{
if ( num == 0 )
return pin[0];
num--;
}
Marshal.ReleaseComObject( pin[0] );
pin[0] = null;
}
}
return null;
}示例2: FindPin
public static IPin FindPin(IBaseFilter filter, PinDirection direction, Guid mediaType, Guid pinCategory, string preferredName)
{
if (Guid.Empty != pinCategory)
{
int idx = 0;
do
{
IPin pinByCategory = DsFindPin.ByCategory(filter, pinCategory, idx);
if (pinByCategory != null)
{
if (IsMatchingPin(pinByCategory, direction, mediaType))
return PrintInfoAndReturnPin(filter, pinByCategory, direction, mediaType, pinCategory, "found by category");
Marshal.ReleaseComObject(pinByCategory);
}
else
break;
idx++;
}
while (true);
}
if (!string.IsNullOrEmpty(preferredName))
{
IPin pinByName = DsFindPin.ByName(filter, preferredName);
if (pinByName != null && IsMatchingPin(pinByName, direction, mediaType))
return PrintInfoAndReturnPin(filter, pinByName, direction, mediaType, pinCategory, "found by name");
Marshal.ReleaseComObject(pinByName);
}
IEnumPins pinsEnum;
IPin[] pins = new IPin[1];
int hr = filter.EnumPins(out pinsEnum);
DsError.ThrowExceptionForHR(hr);
while (pinsEnum.Next(1, pins, IntPtr.Zero) == 0)
{
IPin pin = pins[0];
if (pin != null)
{
if (IsMatchingPin(pin, direction, mediaType))
return PrintInfoAndReturnPin(filter, pin, direction, mediaType, pinCategory, "found by direction and media type");
Marshal.ReleaseComObject(pin);
}
}
return null;
}示例3: DisconnectAllPins
public static bool DisconnectAllPins(IGraphBuilder graphBuilder, IBaseFilter filter)
{
IEnumPins pinEnum;
int hr = filter.EnumPins(out pinEnum);
if (hr != 0 || pinEnum == null)
{
return false;
}
FilterInfo info;
filter.QueryFilterInfo(out info);
Marshal.ReleaseComObject(info.pGraph);
bool allDisconnected = true;
for (; ; )
{
IPin[] pins = new IPin[1];
IntPtr fetched = IntPtr.Zero;
hr = pinEnum.Next(1, pins, fetched);
if (hr != 0 || fetched == IntPtr.Zero)
{
break;
}
PinInfo pinInfo;
pins[0].QueryPinInfo(out pinInfo);
DsUtils.FreePinInfo(pinInfo);
if (pinInfo.dir == PinDirection.Output)
{
if (!DisconnectPin(graphBuilder, pins[0]))
{
allDisconnected = false;
}
}
Marshal.ReleaseComObject(pins[0]);
}
Marshal.ReleaseComObject(pinEnum);
return allDisconnected;
}示例4: GetUnconnectedPin
protected IPin GetUnconnectedPin(IBaseFilter filter, PinDirection direction)
{
IPin destPin = null;
IEnumPins iEnum;
var pins = new IPin[1];
var hr = filter.EnumPins(out iEnum);
Marshal.ThrowExceptionForHR(hr);
var fetched = Marshal.AllocCoTaskMem(4);
hr = iEnum.Next(1, pins, fetched);
Marshal.ThrowExceptionForHR(hr);
while (Marshal.ReadInt32(fetched) == 1)
{
PinDirection pinDir;
IPin pPin;
destPin = pins[0];
hr = destPin.QueryDirection(out pinDir);
Marshal.ThrowExceptionForHR(hr);
PinInfo info;
destPin.QueryPinInfo(out info);
//var name = info.name;
destPin.ConnectedTo(out pPin);
if (pPin == null && pinDir == direction)
break;
hr = iEnum.Next(1, pins, fetched);
Marshal.ThrowExceptionForHR(hr);
}
Marshal.FreeCoTaskMem(fetched);
return destPin;
}示例5: RenderUnconnectedOutputPins
public static void RenderUnconnectedOutputPins(IGraphBuilder graphBuilder, IBaseFilter baseFilter)
{
if (baseFilter == null)
return;
int fetched;
IEnumPins pinEnum;
int hr = baseFilter.EnumPins(out pinEnum);
DsError.ThrowExceptionForHR(hr);
if (hr == 0 && pinEnum != null)
{
pinEnum.Reset();
IPin[] pins = new IPin[1];
while (pinEnum.Next(1, pins, out fetched) == 0 && fetched > 0)
{
PinDirection pinDir;
pins[0].QueryDirection(out pinDir);
if (pinDir == PinDirection.Output && !HasConnection(pins[0]))
{
FilterInfo i;
PinInfo pinInfo;
string pinName = string.Empty;
if (baseFilter.QueryFilterInfo(out i) == 0)
{
if (pins[0].QueryPinInfo(out pinInfo) == 0)
{
Log.Debug("Filter: {0} - try to connect: {1}", i.achName, pinInfo.name);
pinName = pinInfo.name;
DsUtils.FreePinInfo(pinInfo);
}
}
ReleaseComObject(i.pGraph);
hr = graphBuilder.Render(pins[0]);
if (hr != 0)
Log.Debug(" - failed");
}
ReleaseComObject(pins[0]);
}
ReleaseComObject(pinEnum);
}
}示例6: RenderOutputPins
public static void RenderOutputPins(IGraphBuilder graphBuilder, IBaseFilter filter)
{
if (graphBuilder == null) throw new ArgumentNullException("graphBuilder");
if (filter == null) throw new ArgumentNullException("filter");
int hr = 0;
if (filter == null)
throw new ArgumentNullException("filter");
IEnumPins enumPins;
var pins = new IPin[1];
IntPtr fetched = IntPtr.Zero;
hr = filter.EnumPins(out enumPins);
DsError.ThrowExceptionForHR(hr);
try
{
while (enumPins.Next(pins.Length, pins, fetched) == 0)
{
try
{
PinDirection direction;
pins[0].QueryDirection(out direction);
if (direction == PinDirection.Output)
{
hr = graphBuilder.Render(pins[0]);
DsError.ThrowExceptionForHR(hr);
}
}
finally
{
Marshal.ReleaseComObject(pins[0]);
}
}
}
finally
{
Marshal.ReleaseComObject(enumPins);
}
}示例7: EnumeratePins
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;
}示例8: SetFilterFormat
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);
}
}示例9: LogOutputPinsConnectionRecursive
public static void LogOutputPinsConnectionRecursive(IBaseFilter filter, string previous = "")
{
bool log = true;
IEnumPins pinEnum = null;
if (filter.EnumPins(out pinEnum) == 0)
{
FilterInfo sourceFilterInfo;
filter.QueryFilterInfo(out sourceFilterInfo);
int fetched = 0;
IPin[] pins = new IPin[1];
while (pinEnum.Next(1, pins, out fetched) == 0 && fetched > 0)
{
IPin pin = pins[0];
PinDirection pinDirection;
if (pin.QueryDirection(out pinDirection) == 0 && pinDirection == PinDirection.Output)
{
log = false;
IPin connectedPin;
if (pin.ConnectedTo(out connectedPin) == 0 && connectedPin != null)
{
PinInfo connectedPinInfo;
connectedPin.QueryPinInfo(out connectedPinInfo);
FilterInfo connectedFilterInfo;
connectedPinInfo.filter.QueryFilterInfo(out connectedFilterInfo);
if (previous == "") previous = sourceFilterInfo.achName;
DirectShowUtil.ReleaseComObject(connectedPin, 2000);
IBaseFilter connectedFilter;
if (connectedFilterInfo.pGraph.FindFilterByName(connectedFilterInfo.achName, out connectedFilter) == 0 && connectedFilter != null)
{
LogOutputPinsConnectionRecursive(connectedFilter, previous + string.Format(" --> {0}", connectedFilterInfo.achName));
DirectShowUtil.ReleaseComObject(connectedFilter);
}
}
DirectShowUtil.ReleaseComObject(pin, 2000);
}
}
}
DirectShowUtil.ReleaseComObject(pinEnum, 2000);
if (log) Log.Instance.Debug(previous);
}示例10: FilterHasInputPin
/// <summary>
/// This filter has an input pin matching one of the pins in the list.
/// </summary>
/// <param name="thisFilter"></param>
/// <param name="inputPins"></param>
/// <returns></returns>
private bool FilterHasInputPin(IBaseFilter thisFilter, List<IPin> inputPins)
{
if (inputPins.Count == 0) return false;
IEnumPins enumPins;
thisFilter.EnumPins(out enumPins);
IPin p;
uint fetched;
enumPins.Next(1, out p, out fetched);
while (fetched == 1) {
_PinDirection pinDir;
p.QueryDirection(out pinDir);
if (pinDir == _PinDirection.PINDIR_INPUT) {
if (inputPins.Contains(p)) {
return true;
}
}
enumPins.Next(1, out p, out fetched);
}
return false;
}示例11: FindPin
private IPin FindPin(IBaseFilter filter, PinDirection direction, Guid mediaType, string preferredName)
{
if (!string.IsNullOrEmpty(preferredName))
{
IPin pinByName = DsFindPin.ByName(filter, preferredName);
if (IsMatchingPin(pinByName, direction, mediaType))
return pinByName;
Marshal.ReleaseComObject(pinByName);
}
IEnumPins pinsEnum;
IPin[] pins = new IPin[1];
int hr = filter.EnumPins(out pinsEnum);
DsError.ThrowExceptionForHR(hr);
while (pinsEnum.Next(1, pins, IntPtr.Zero) == 0)
{
IPin pin = pins[0];
if (pin != null)
{
if (IsMatchingPin(pin, direction, mediaType))
return pin;
Marshal.ReleaseComObject(pin);
}
}
return null;
}示例12: ConnectAllOutputFiltersFrom
protected virtual void ConnectAllOutputFiltersFrom(IBaseFilter fromFilter, IFilterGraph2 graph)
{
// Get the pin enumerator
IEnumPins ppEnum;
int hr = fromFilter.EnumPins(out ppEnum);
DsError.ThrowExceptionForHR(hr);
try
{
// Walk the pins looking for a match
IPin[] pPins = new IPin[1];
//22 int lFetched;
//22 while ((ppEnum.Next(1, pPins, out lFetched) >= 0) && (lFetched == 1))
while (ppEnum.Next(1, pPins, IntPtr.Zero) >= 0)
{
// Read the direction
PinDirection ppindir;
hr = pPins[0].QueryDirection(out ppindir);
DsError.ThrowExceptionForHR(hr);
// Is it the right direction?
if (ppindir == PinDirection.Output)
{
if (pPins[0] != null)
{
hr = graph.Render(pPins[0]);
//DsError.ThrowExceptionForHR(hr);
}
}
Marshal.ReleaseComObject(pPins[0]);
}
}
finally
{
Marshal.ReleaseComObject(ppEnum);
}
}示例13: ByName
/// <summary>
/// Scans a filter's pins looking for a pin with the specified name
/// </summary>
/// <param name="vSource">The filter to scan</param>
/// <param name="vPinName">The pin name to find</param>
/// <returns>The matching pin, or null if not found</returns>
public static IPin ByName(IBaseFilter vSource, string vPinName)
{
int hr;
IEnumPins ppEnum;
PinInfo ppinfo;
IPin pRet = null;
IPin[] pPins = new IPin[1];
if (vSource == null)
{
return null;
}
// Get the pin enumerator
hr = vSource.EnumPins(out ppEnum);
DsError.ThrowExceptionForHR(hr);
try
{
// Walk the pins looking for a match
while (ppEnum.Next(1, pPins, IntPtr.Zero) == 0)
{
// Read the info
hr = pPins[0].QueryPinInfo(out ppinfo);
DsError.ThrowExceptionForHR(hr);
// Is it the right name?
if (ppinfo.name == vPinName)
{
DsUtils.FreePinInfo(ppinfo);
pRet = pPins[0];
break;
}
Marshal.ReleaseComObject(pPins[0]);
DsUtils.FreePinInfo(ppinfo);
}
}
finally
{
Marshal.ReleaseComObject(ppEnum);
}
return pRet;
}示例14: ByDirection
/// <summary>
/// Scans a filter's pins looking for a pin in the specified direction
/// </summary>
/// <param name="vSource">The filter to scan</param>
/// <param name="vDir">The direction to find</param>
/// <param name="iIndex">Zero based index (ie 2 will return the third pin in the specified direction)</param>
/// <returns>The matching pin, or null if not found</returns>
public static IPin ByDirection(IBaseFilter vSource, PinDirection vDir, int iIndex)
{
int hr;
IEnumPins ppEnum;
PinDirection ppindir;
IPin pRet = null;
IPin[] pPins = new IPin[1];
if (vSource == null)
{
return null;
}
// Get the pin enumerator
hr = vSource.EnumPins(out ppEnum);
DsError.ThrowExceptionForHR(hr);
try
{
// Walk the pins looking for a match
while (ppEnum.Next(1, pPins, IntPtr.Zero) == 0)
{
// Read the direction
hr = pPins[0].QueryDirection(out ppindir);
DsError.ThrowExceptionForHR(hr);
// Is it the right direction?
if (ppindir == vDir)
{
// Is is the right index?
if (iIndex == 0)
{
pRet = pPins[0];
break;
}
iIndex--;
}
Marshal.ReleaseComObject(pPins[0]);
}
}
finally
{
Marshal.ReleaseComObject(ppEnum);
}
return pRet;
}示例15: RenderOutputPins
public static bool RenderOutputPins(IGraphBuilder graphBuilder, IBaseFilter filter, int maxPinsToRender,
bool tryAllFilters)
{
int pinsRendered = 0;
bool bAllConnected = true;
IEnumPins pinEnum;
FilterInfo info;
filter.QueryFilterInfo(out info);
ReleaseComObject(info.pGraph);
int hr = filter.EnumPins(out pinEnum);
if ((hr == 0) && (pinEnum != null))
{
Log.Info("got pins");
pinEnum.Reset();
IPin[] pins = new IPin[1];
int iFetched;
int iPinNo = 0;
do
{
// Get the next pin
//Log.Info(" get pin:{0}",iPinNo);
iPinNo++;
hr = pinEnum.Next(1, pins, out iFetched);
if (hr == 0)
{
if (iFetched == 1 && pins[0] != null)
{
PinInfo pinInfo = new PinInfo();
hr = pins[0].QueryPinInfo(out pinInfo);
DsUtils.FreePinInfo(pinInfo);
if (hr == 0)
{
Log.Info(" got pin#{0}:{1}", iPinNo - 1, pinInfo.name);
}
else
{
Log.Info(" got pin:?");
}
PinDirection pinDir;
pins[0].QueryDirection(out pinDir);
if (pinDir == PinDirection.Output)
{
IPin pConnectPin = null;
hr = pins[0].ConnectedTo(out pConnectPin);
if (hr != 0 || pConnectPin == null)
{
hr = 0;
if (TryConnect(graphBuilder, info.achName, pins[0], tryAllFilters))
//if ((hr=graphBuilder.Render(pins[0])) == 0)
{
Log.Info(" render ok");
}
else
{
Log.Error(" render {0} failed:{1:x}, trying alternative graph builder", pinInfo.name, hr);
if ((hr = graphBuilder.Render(pins[0])) == 0)
{
Log.Info(" render ok");
}
else
{
Log.Error(" render failed:{0:x}", hr);
bAllConnected = false;
}
}
pinsRendered++;
}
if (pConnectPin != null)
{
ReleaseComObject(pConnectPin);
}
pConnectPin = null;
//else Log.Info("pin is already connected");
}
ReleaseComObject(pins[0]);
}
else
{
iFetched = 0;
Log.Info("no pins?");
break;
}
}
else
{
iFetched = 0;
}
} while (iFetched == 1 && pinsRendered < maxPinsToRender && bAllConnected);
ReleaseComObject(pinEnum);
}
return bAllConnected;
}