/// <summary>
/// Converts the attribute store's contents to a memory buffer.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="buffer">Receives a memory buffer filled with attribute data.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAttributesAsBlob(this IMFAttributes attributes, out MemoryBuffer buffer)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
buffer = null;
int sizeInBytes;
HResult hr = MFExtern.MFGetAttributesAsBlobSize(attributes, out sizeInBytes);
if (hr.Succeeded())
{
MemoryBuffer result = new MemoryBuffer((uint)sizeInBytes);
hr = MFExtern.MFGetAttributesAsBlob(attributes, result.BufferPointer, (int)result.ByteLength);
if (hr.Succeeded())
{
buffer = result;
}
else
{
result.Dispose();
}
}
return(hr);
}
/// <summary>
/// Converts the attribute store's contents to a byte array.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="buffer">Receives a byte array filled with attribute data.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAttributesAsBlob(this IMFAttributes attributes, out byte[] buffer)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
buffer = null;
int sizeInBytes;
HResult hr = MFExtern.MFGetAttributesAsBlobSize(attributes, out sizeInBytes);
if (hr.Succeeded())
{
byte[] result = new byte[sizeInBytes];
using (GCPin pin = new GCPin(result))
{
hr = MFExtern.MFGetAttributesAsBlob(attributes, pin.PinnedAddress, result.Length);
if (hr.Succeeded())
{
buffer = result;
}
}
}
return(hr);
}
public static HResult GetEnableData(this IMFContentEnabler contentEnabler, out byte[] data)
{
if (contentEnabler == null)
{
throw new ArgumentNullException("contentEnabler");
}
IntPtr dataPtr;
int dataLength;
HResult hr = contentEnabler.GetEnableData(out dataPtr, out dataLength);
if (hr.Succeeded())
{
try
{
data = new byte[dataLength];
Marshal.Copy(dataPtr, data, 0, dataLength);
}
finally
{
Marshal.FreeCoTaskMem(dataPtr);
}
}
else
{
data = null;
}
return(hr);
}
/// <summary>
/// Gets a copy of the current image being displayed by the video renderer.
/// </summary>
/// <param name="videoDisplayControl">A valid IMFVideoDisplayControl instance.</param>
/// <param name="bih">A BitmapInfoHeader class that receives a description of the bitmap. </param>
/// <param name="dib">Receives byte array that contains a packed Windows device-independent bitmap (DIB).</param>
/// <param name="timeStamp">Receives the time stamp of the captured image.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetCurrentImage(this IMFVideoDisplayControl videoDisplayControl, BitmapInfoHeader bih, out byte[] dib, out TimeSpan timeStamp)
{
if (videoDisplayControl == null)
{
throw new ArgumentNullException("videoDisplayControl");
}
IntPtr dibPtr;
int dibLength;
long time;
HResult hr = videoDisplayControl.GetCurrentImage(bih, out dibPtr, out dibLength, out time);
if (hr.Succeeded())
{
try
{
dib = new byte[dibLength];
Marshal.Copy(dibPtr, dib, 0, dibLength);
timeStamp = TimeSpan.FromTicks(time);
}
finally
{
Marshal.FreeCoTaskMem(dibPtr);
}
}
else
{
dib = null;
timeStamp = TimeSpan.MinValue;
}
return(hr);
}
public PropertyOrigin GetThemePropertyOrigin(int partId, int stateId, int propertyId)
{
HResult hr = StyleNativeMethods.GetThemePropertyOrigin(
theme, partId, stateId, propertyId, out PropertyOrigin origin);
return(hr.Succeeded() ? origin : PropertyOrigin.NotFound);
}
/// <summary>
/// Retrieves an attribute at the specified index.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="index">The index to retrieve.</param>
/// <param name="guidKey">The key of this attribute.</param>
/// <param name="value">The value of this attribute.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetItemByIndex(this IMFAttributes attributes, int index, out Guid guidKey, out object value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
if (index < 0)
{
throw new ArgumentOutOfRangeException("index");
}
HResult hr = 0;
value = null;
using (PropVariant variant = new PropVariant())
{
hr = attributes.GetItemByIndex(index, out guidKey, variant);
if (hr.Succeeded())
{
value = variant.GetObject();
}
}
return(hr);
}
public IntPtr?GetThemeBitmap(int partId, int stateId, int propertyId)
{
HResult hr = UxThemeExNativeMethods.UxGetThemeBitmap(
themeFile, theme, partId, stateId, propertyId, GBF.GBF_DIRECT, out IntPtr value);
return(hr.Succeeded() ? value : (IntPtr?)null);
}
/// <summary>
/// Retrieves a byte array associated with a key.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="guidKey">Guid that identifies which value to retrieve.</param>
/// <param name="value">Receives the byte array.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAllocatedBlob(this IMFAttributes attributes, Guid guidKey, out byte[] value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
IntPtr resultPtr;
int resultLength;
HResult hr = attributes.GetAllocatedBlob(guidKey, out resultPtr, out resultLength);
if (hr.Succeeded())
{
try
{
value = new byte[resultLength];
Marshal.Copy(resultPtr, value, 0, resultLength);
}
finally
{
Marshal.FreeCoTaskMem(resultPtr);
}
}
else
{
value = null;
}
return(hr);
}
public static Guid GetDteClsid(IHostPlugin serviceProvider)
{
try
{
var localRegistry4 = serviceProvider.GetService <SLocalRegistry>() as ILocalRegistry4;
var pdwRegRootHandle = 0U;
if (localRegistry4 != null)
{
string pbstrRoot;
if (HResult.Succeeded(localRegistry4.GetLocalRegistryRootEx(2U, out pdwRegRootHandle, out pbstrRoot)))
{
switch (pdwRegRootHandle)
{
case 2147483649U:
using (var registryKey = Registry.CurrentUser.OpenSubKey(pbstrRoot))
{
if (registryKey != null)
{
var obj = registryKey.GetValue("ThisVersionDTECLSID");
if (obj is string)
{
Guid result;
if (Guid.TryParse((string)obj, out result))
{
return(result);
}
}
}
break;
}
case 2147483650U:
using (var registryKey = Registry.LocalMachine.OpenSubKey(pbstrRoot))
{
if (registryKey != null)
{
var obj = registryKey.GetValue("ThisVersionDTECLSID");
if (obj is string)
{
Guid result;
if (Guid.TryParse((string)obj, out result))
{
return(result);
}
}
}
break;
}
}
}
}
}
catch (Exception ex)
{
TeamFoundationTrace.TraceAndDebugFailException(ex);
}
return(new Guid());
}
public static bool IsExpanded(IVsHierarchy hierarchy, uint itemId)
{
object pvar;
if (!HResult.Succeeded(hierarchy.GetProperty(itemId, -2035, out pvar)))
{
return(false);
}
return((bool)pvar);
}
private void OnPlanComplete(object sender, PlanCompleteEventArgs e)
{
if (HResult.Succeeded(e.Status))
{
_engine.Apply(OnUIThread(() => Application.Current.MainWindow != null ? new WindowInteropHelper(Application.Current.MainWindow).EnsureHandle() : IntPtr.Zero));
}
else
{
_completedStepVmFactory.GetViewModelInstance().ExitCode = e.Status;
_completedStepVmFactory.GetViewModelInstance().Result = Cancelled ? OperationResult.Cancelled : OperationResult.Failed;
}
}
private void PlanComplete(object sender, PlanCompleteEventArgs e)
{
if (HResult.Succeeded(e.Status))
{
PreApplyState = State;
State = InstallationState.Applying;
App.Current.Apply();
}
else
{
State = InstallationState.Failed;
}
}
public static string GetFullFriendlyName(this Type type)
{
if (type.IsUnknownCOMObject())
{
string progID;
var clsid = type.GUID;
if (HResult.Succeeded(NativeMethods.ProgIDFromCLSID(ref clsid, out progID)))
{
return(progID);
}
}
return(type.GetFriendlyName(GetFullRootName));
}
/// <summary>
/// Retrieves the last clock time that was correlated with system time.
/// </summary>
/// <param name="clock">A valid IMFClock instance.</param>
/// <param name="clockTime">Receives the last known clock time, in units of the clock's frequency.</param>
/// <param name="systemTime">Receives the system time that corresponds to the clock time.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetCorrelatedTime(this IMFClock clock, out long clockTime, out TimeSpan systemTime)
{
if (clock == null)
{
throw new ArgumentNullException("clock");
}
long tmp;
HResult hr = clock.GetCorrelatedTime(0, out clockTime, out tmp);
systemTime = hr.Succeeded() ? TimeSpan.FromTicks(tmp) : default(TimeSpan);
return(hr);
}
/// <summary>
/// Creates an instance of the capture engine.
/// </summary>
/// <param name="factory">A valid IMFCaptureEngineClassFactory instance.</param>
/// <param name="engine">Receives an instance of the capture engine.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult CreateInstance(this IMFCaptureEngineClassFactory factory, out IMFCaptureEngine engine)
{
if (factory == null)
{
throw new ArgumentNullException("factory");
}
object tmp;
HResult hr = factory.CreateInstance(CLSID.CLSID_MFCaptureEngine, typeof(IMFCaptureEngine).GUID, out tmp);
engine = hr.Succeeded() ? tmp as IMFCaptureEngine : null;
return(hr);
}
/// <summary>
/// Reads the next sample from the media source.
/// </summary>
/// <param name="sourceReader">A valid IMFSourceReader instance.</param></param></param>
/// <param name="streamIndex">The stream to pull data from.</param>
/// <param name="controlFlags">One or more members of the MF_SOURCE_READER_CONTROL_FLAG enumeration.</param>
/// <param name="actualStreamIndex">Receives the zero-based index of the stream.</param>
/// <param name="streamFlags">Receives one or more members of the MF_SOURCE_READER_FLAG enumeration.</param>
/// <param name="timestamp">Receives the time stamp of the sample, or the time of the stream event indicated in <paramref name="streamFlags"/>.</param>
/// <param name="sample">Receives an instance of the IMFSample interface or the value null.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult ReadSample(this IMFSourceReader sourceReader, SourceReaderStreams streamIndex, MF_SOURCE_READER_CONTROL_FLAG controlFlags, out int actualStreamIndex, out MF_SOURCE_READER_FLAG streamFlags, out TimeSpan timestamp, out IMFSample sample)
{
if (sourceReader == null)
{
throw new ArgumentNullException("sourceReader");
}
long tmp = 0;
HResult hr = sourceReader.ReadSample((int)streamIndex, controlFlags, out actualStreamIndex, out streamFlags, out tmp, out sample);
timestamp = hr.Succeeded() ? TimeSpan.FromTicks(tmp) : default(TimeSpan);
return(hr);
}
/// <summary>
/// Retrieves a UInt32 value associated with a key.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="guidKey">Guid that identifies which value to retrieve.</param>
/// <param name="value">Receives the requested value.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetUINT32(this IMFAttributes attributes, Guid guidKey, out uint value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
int result = 0;
HResult hr = attributes.GetUINT32(guidKey, out result);
value = hr.Succeeded() ? (uint)result : default(uint);
return(hr);
}
/// <summary>
/// Gets the start time for a specified time range.
/// </summary>
/// <param name="mediaTimeRange">A valid IMFMediaTimeRange instance.</param>
/// <param name="index">The zero-based index of the time range to query.</param>
/// <param name="end">Receives the start time.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetStart(this IMFMediaTimeRange mediaTimeRange, int index, TimeSpan start)
{
if (mediaTimeRange == null)
{
throw new ArgumentNullException("mediaTimeRange");
}
double result;
HResult hr = mediaTimeRange.GetStart(index, out result);
start = hr.Succeeded() ? TimeSpan.FromSeconds(result) : default(TimeSpan);
return(hr);
}
/// <summary>
/// Gets the latest clock time.
/// </summary>
/// <param name="presentationClock">A valid IMFPresentationClock instance.</param>
/// <param name="clockTime">Receives the latest clock time.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetTime(this IMFPresentationClock presentationClock, out TimeSpan clockTime)
{
if (presentationClock == null)
{
throw new ArgumentNullException("presentationClock");
}
long tmp;
HResult hr = presentationClock.GetTime(out tmp);
clockTime = hr.Succeeded() ? TimeSpan.FromTicks(tmp) : default(TimeSpan);
return(hr);
}
/// <summary>
/// Retrieves the presentation time of the sample.
/// </summary>
/// <param name="sample">A valid IMFSample instance.</param>
/// <param name="sampleTime">Receives the presentation time.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetSampleTime(this IMFSample sample, out TimeSpan sampleTime)
{
if (sample == null)
{
throw new ArgumentNullException("sample");
}
long tmp;
HResult hr = sample.GetSampleDuration(out tmp);
sampleTime = hr.Succeeded() ? TimeSpan.FromTicks(tmp) : default(TimeSpan);
return(hr);
}
/// <summary>
/// Queries the underlying Sink Writer object.
/// </summary>
/// <param name="captureSink">A valid IMFCaptureSink instance.</param>
/// <param name="sinkStreamIndex">The zero-based index of the streamIndex to query. The index is returned in the sinkStreamIndex parameter of the <see cref="IMFCaptureSink.AddStream"/> method.</param>
/// <param name="sourceReader">Receives an instance of the underlying Sink Writer.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetService(this IMFCaptureSink captureSink, int sinkStreamIndex, out IMFSinkWriter sinkWriter)
{
if (captureSink == null)
{
throw new ArgumentNullException("captureSink");
}
object tmp;
HResult hr = captureSink.GetService(sinkStreamIndex, Guid.Empty, typeof(IMFSinkWriterExtensions).GUID, out tmp);
sinkWriter = hr.Succeeded() ? tmp as IMFSinkWriter : null;
return(hr);
}
/// <summary>
/// Creates an instance of the sink writer, given an IMFByteStream instance.
/// </summary>
/// <param name="factory">A valid IMFReadWriteClassFactory instance.</param>
/// <param name="mediaSink">A byte streamIndex used by the sink writer to write data.</param>
/// <param name="attributes">A instance to the IMFAttributes interface. You can use this parameter to configure the sink writer.</param>
/// <param name="sourceReader">Receives the sink writer.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult CreateInstanceFromObject(this IMFReadWriteClassFactory factory, IMFByteStream byteStream, IMFAttributes attributes, out IMFSinkWriter sinkWriter)
{
if (factory == null)
{
throw new ArgumentNullException("factory");
}
object tmp;
HResult hr = factory.CreateInstanceFromObject(CLSID.CLSID_MFSinkWriter, byteStream, attributes, typeof(IMFSinkWriterExtensions).GUID, out tmp);
sinkWriter = hr.Succeeded() ? tmp as IMFSinkWriter : null;
return(hr);
}
/// <summary>
/// Retrieves a Boolean value associated with a key.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="guidKey">Guid that identifies which value to retrieve.</param>
/// <param name="value">Receives the requested value.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
/// <remarks>Media Foundation attributes don't support boolean values. This method get them as a 32-bits unsigned integer and return true for any non-zero value and false otherwise.</remarks>
public static HResult GetBoolean(this IMFAttributes attributes, Guid guidKey, out bool value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
uint result;
HResult hr = attributes.GetUINT32(guidKey, out result);
value = hr.Succeeded() ? (result != 0) : default(bool);
return(hr);
}
/// <summary>
/// Gets the duration of the media item.
/// </summary>
/// <param name="mediaItem">A valid IMFPMediaItem instance.</param>
/// <param name="durationValue">Receives the duration.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetDuration(this IMFPMediaItem mediaItem, out TimeSpan durationValue)
{
if (mediaItem == null)
{
throw new ArgumentNullException("mediaItem");
}
using (PropVariant result = new PropVariant())
{
HResult hr = mediaItem.GetDuration(Guid.Empty, result);
durationValue = hr.Succeeded() ? TimeSpan.FromTicks((long)result.GetULong()) : default(TimeSpan);
return(hr);
}
}
/// <summary>
/// Creates an instance of the source reader given a URL.
/// </summary>
/// <param name="factory">A valid IMFReadWriteClassFactory instance.</param>
/// <param name="url">A string that specifies the input file for the source reader.</param>
/// <param name="attributes">A instance to the IMFAttributes interface. You can use this parameter to configure the source reader.</param></param>
/// <param name="sourceReader">Receives the source reader</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult CreateInstanceFromURL(this IMFReadWriteClassFactory factory, string url, IMFAttributes attributes, out IMFSourceReader sourceReader)
{
if (factory == null)
{
throw new ArgumentNullException("factory");
}
object tmp;
HResult hr = factory.CreateInstanceFromURL(CLSID.CLSID_MFSourceReader, url, attributes, typeof(IMFSourceReader).GUID, out tmp);
sourceReader = hr.Succeeded() ? tmp as IMFSourceReader : null;
return(hr);
}
/// <summary>
/// Gets a pointer to the underlying Source Reader object.
/// </summary>
/// <param name="captureSource">A valid IMFCaptureSource instance.</param>
/// <param name="sourceReader">Receives an instance of the underlying Source Reader.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetService(this IMFCaptureSource captureSource, out IMFSourceReader sourceReader)
{
if (captureSource == null)
{
throw new ArgumentNullException("captureSource");
}
object tmp;
HResult hr = captureSource.GetService(Guid.Empty, typeof(IMFSourceReader).GUID, out tmp);
sourceReader = hr.Succeeded() ? tmp as IMFSourceReader : null;
return(hr);
}
public static HResult GetObject(this IMFTopologyNode topologyNode, out IMFActivate activate)
{
if (topologyNode == null)
{
throw new ArgumentNullException("topologyNode");
}
object tmp;
HResult hr = topologyNode.GetObject(out tmp);
activate = hr.Succeeded() ? tmp as IMFActivate : null;
return(hr);
}
public static HResult GetObject(this IMFTopologyNode topologyNode, out IMFStreamSink streamSink)
{
if (topologyNode == null)
{
throw new ArgumentNullException("topologyNode");
}
object tmp;
HResult hr = topologyNode.GetObject(out tmp);
streamSink = hr.Succeeded() ? tmp as IMFStreamSink : null;
return(hr);
}
/// <summary>
/// Retrieves a <see cref="MemoryBuffer"/> associated with a key.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="guidKey">Guid that identifies which value to retrieve.</param>
/// <param name="value">Receives a MemoryBuffer wrapping the attribute content.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAllocatedBlob(this IMFAttributes attributes, Guid guidKey, out MemoryBuffer value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
IntPtr resultPtr;
int resultLength;
HResult hr = attributes.GetAllocatedBlob(guidKey, out resultPtr, out resultLength);
value = hr.Succeeded() ? new MemoryBuffer(resultPtr, (uint)resultLength) : null;
return(hr);
}
public static object GetService(IServiceProvider provider, Guid serviceGuid)
{
var riid = VSConstants.IID_IUnknown;
IntPtr ppvObject;
if (!HResult.Succeeded(provider.QueryService(ref serviceGuid, ref riid, out ppvObject)))
{
return(null);
}
try
{
return(Marshal.GetObjectForIUnknown(ppvObject));
}
finally
{
Marshal.Release(ppvObject);
}
}
