NAudio.MediaFoundation.MediaFoundationApi Class Reference

Main interface for using Media Foundation with NAudio. More...

Collaboration diagram for NAudio.MediaFoundation.MediaFoundationApi:

Static Public Member Functions
static void	Startup ()
	Initializes the Media Foundation platform if not already initialized.
static IEnumerable< IMFActivate >	EnumerateTransforms (Guid category)
	Enumerates and returns a collection of IMFActivate interfaces for the specified category.
static void	Shutdown ()
	Shuts down the Media Foundation platform if it has been initialized.
static IMFMediaType	CreateMediaType ()
	Creates a new instance of IMFMediaType.
static IMFMediaType	CreateMediaTypeFromWaveFormat (WaveFormat waveFormat)
	Creates a new IMFMediaType object from the provided WaveFormat.
static IMFMediaBuffer	CreateMemoryBuffer (int bufferSize)
	Creates a memory buffer of the specified size and returns it.
static IMFSample	CreateSample ()
	Creates a new Media Foundation sample.
static IMFAttributes	CreateAttributes (int initialSize)
	Creates a new instance of IMFAttributes with the specified initial size.
static IMFByteStream	CreateByteStream (object stream)
	Creates an IMFByteStream from the given stream object.
static IMFSourceReader	CreateSourceReaderFromByteStream (IMFByteStream byteStream)
	Creates a source reader from the specified byte stream.

Static Private Attributes
static bool	initialized

Detailed Description

Main interface for using Media Foundation with NAudio.

Member Function Documentation

CreateAttributes()

static IMFAttributes NAudio.MediaFoundation.MediaFoundationApi.CreateAttributes ( int initialSize )

inlinestatic

Creates a new instance of IMFAttributes with the specified initial size.

Parameters

initialSize

The initial size of the attributes.

Returns

A new instance of IMFAttributes with the specified initial size.

This method creates a new instance of IMFAttributes with the specified initial size using the MFCreateAttributes method from the Media Foundation Interop library.

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CreateByteStream()

static IMFByteStream NAudio.MediaFoundation.MediaFoundationApi.CreateByteStream ( object stream )

inlinestatic

Creates an IMFByteStream from the given stream object.

Parameters

stream

The stream object to create the IMFByteStream from.

Returns

The IMFByteStream created from the input stream .

Exceptions

ArgumentException

Thrown when the input stream is not of type IStream in desktop apps.

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CreateMediaType()

static IMFMediaType NAudio.MediaFoundation.MediaFoundationApi.CreateMediaType ( )

inlinestatic

Creates a new instance of IMFMediaType.

Returns

A new instance of IMFMediaType.

This method creates a new instance of IMFMediaType using the Media Foundation API MFCreateMediaType function.

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CreateMediaTypeFromWaveFormat()

static IMFMediaType NAudio.MediaFoundation.MediaFoundationApi.CreateMediaTypeFromWaveFormat ( WaveFormat waveFormat )

inlinestatic

Creates a new IMFMediaType object from the provided WaveFormat.

Parameters

waveFormat

The WaveFormat to initialize the IMFMediaType with.

Returns

The IMFMediaType object initialized with the provided WaveFormat.

This method initializes a new IMFMediaType object using the provided WaveFormat. It first creates a new IMFMediaType object, then initializes it with the provided WaveFormat using MediaFoundationInterop.MFInitMediaTypeFromWaveFormatEx method. If an exception occurs during the initialization process, the created IMFMediaType object is released before rethrowing the exception.

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CreateMemoryBuffer()

static IMFMediaBuffer NAudio.MediaFoundation.MediaFoundationApi.CreateMemoryBuffer ( int bufferSize )

inlinestatic

Creates a memory buffer of the specified size and returns it.

Parameters

bufferSize

The size of the memory buffer to be created.

Returns

The memory buffer of size bufferSize .

This method creates a memory buffer of the specified size using Media Foundation's MFCreateMemoryBuffer function. The created memory buffer is then returned for further use.

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CreateSample()

static IMFSample NAudio.MediaFoundation.MediaFoundationApi.CreateSample ( )

inlinestatic

Creates a new Media Foundation sample.

Returns

A new instance of IMFSample representing the Media Foundation sample.

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CreateSourceReaderFromByteStream()

static IMFSourceReader NAudio.MediaFoundation.MediaFoundationApi.CreateSourceReaderFromByteStream ( IMFByteStream byteStream )

inlinestatic

Creates a source reader from the specified byte stream.

Parameters

byteStream

The byte stream from which to create the source reader.

Returns

The source reader created from the specified byte stream.

This method creates a source reader from the provided byte stream using Media Foundation interop.

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EnumerateTransforms()

static IEnumerable< IMFActivate > NAudio.MediaFoundation.MediaFoundationApi.EnumerateTransforms ( Guid category )

inlinestatic

Enumerates and returns a collection of IMFActivate interfaces for the specified category.

Parameters

category

The category for which to enumerate the IMFActivate interfaces.

Returns

A collection of IMFActivate interfaces for the specified category.

This method uses MediaFoundationInterop.MFTEnumEx to enumerate the IMFActivate interfaces for the specified category. It then iterates through the interfaces, marshals them, and yields each interface in the collection. Finally, it frees the memory allocated for the interfacesPointer using Marshal.FreeCoTaskMem.

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Shutdown()

static void NAudio.MediaFoundation.MediaFoundationApi.Shutdown ( )

inlinestatic

Shuts down the Media Foundation platform if it has been initialized.

This method checks if the Media Foundation platform has been initialized. If it has been initialized, it shuts down the platform using the MFShutdown method and sets the initialized flag to false.

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Startup()

static void NAudio.MediaFoundation.MediaFoundationApi.Startup ( )

inlinestatic

Initializes the Media Foundation platform if not already initialized.

This method checks if the Media Foundation platform is already initialized. If not, it initializes the platform by calling MediaFoundationInterop.MFStartup. The method first checks the Media Foundation SDK version and the operating system version to determine the appropriate startup parameters.

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Member Data Documentation

initialized

bool NAudio.MediaFoundation.MediaFoundationApi.initialized

staticprivate

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The documentation for this class was generated from the following file:

• /Users/sumansaurabh/Documents/my-startup/xeno-rat/Plugins/LiveMicrophone/lib/NAudio.Wasapi/MediaFoundation/MediaFoundationHelpers.cs