CSCore - MFMediaType

MFMediaType(IntPtr ptr)

Initializes a new instance of the MFMediaType class.

public void MFMediaType(IntPtr ptr)

Parameters

ptr

IntPtr

The native pointer of the COM object.

CreateEmpty()

Creates an empty MFMediaType.

public static MFMediaType CreateEmpty()

Returns

Returns an empty MFMediaType.

FreeRepresentation(Guid guidRepresentation, IntPtr representation)

Frees memory that was allocated by the GetRepresentation method.

public void FreeRepresentation(Guid guidRepresentation, IntPtr representation)

Parameters

guidRepresentation

Guid

Guid that was passed to the GetRepresentation method.

representation

IntPtr

Pointer to the buffer that was returned by the GetRepresentation method.

Remarks

For more information, see .

save

reset

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FreeRepresentationNative(Guid guidRepresentation, IntPtr representation)

Frees memory that was allocated by the GetRepresentation method.

public Int32 FreeRepresentationNative(Guid guidRepresentation, IntPtr representation)

Parameters

guidRepresentation

Guid

Guid that was passed to the GetRepresentation method.

representation

IntPtr

Pointer to the buffer that was returned by the GetRepresentation method.

Returns

HRESULT

Remarks

For more information, see .

FromWaveFormat(WaveFormat waveFormat)

Creates a new MFMediaType based on a specified waveFormat.

public static MFMediaType FromWaveFormat(WaveFormat waveFormat)

Parameters

waveFormat

WaveFormat

WaveFormat which should be "converted" to a MFMediaType.

Returns

Returns a new MFMediaType.

GetMajorType()

Gets the major type of the format.

public Guid GetMajorType()

Returns

The major type Guid. The major type describes the broad category of the format, such as audio or video. For a list of possible values, see .

save

reset

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GetMajorTypeNative(Guid& majorType)

Gets the major type of the format.

public Int32 GetMajorTypeNative(Guid& majorType)

Parameters

majorType

Guid&

Receives the major type Guid. The major type describes the broad category of the format, such as audio or video. For a list of possible values, see .

Returns

HRESULT

GetRepresentation(Guid guidRepresentation)

Retrieves an alternative representation of the media type. Currently only the DirectShow AMMEDIATYPE structure is supported.

public IntPtr GetRepresentation(Guid guidRepresentation)

Parameters

guidRepresentation

Guid

Guid that specifies the representation to retrieve. The following values are defined.

Returns

A pointer to a structure that contains the representation. The method allocates the memory for the structure. The caller must release the memory by calling FreeRepresentation.

Remarks

For more information, see .

save

reset

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GetRepresentationNative(Guid guidRepresentation, IntPtr& representation)

Retrieves an alternative representation of the media type. Currently only the DirectShow AMMEDIATYPE structure is supported.

public Int32 GetRepresentationNative(Guid guidRepresentation, IntPtr& representation)

Parameters

guidRepresentation

Guid

Guid that specifies the representation to retrieve. The following values are defined.

representation

IntPtr&

Receives a pointer to a structure that contains the representation. The method allocates the memory for the structure. The caller must release the memory by calling FreeRepresentation.

Returns

HRESULT

Remarks

For more information, see .

IsCompressedFormat()

Queries whether the media type is a temporally compressed format. Temporal compression uses information from previously decoded samples when decompressing the current sample.

public NativeBool IsCompressedFormat()

Returns

True if the format uses temporal compression. False if the format does not use temporal compression.

save

reset

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IsCompressedFormatNative(NativeBool& iscompressed)

Queries whether the media type is a temporally compressed format. Temporal compression uses information from previously decoded samples when decompressing the current sample.

public Int32 IsCompressedFormatNative(NativeBool& iscompressed)

Parameters

iscompressed

NativeBool&

Receives a Boolean value. The value is TRUE if the format uses temporal compression, or FALSE if the format does not use temporal compression.

Returns

HRESULT

IsEqual(MFMediaType mediaType)

Compares two media types and determines whether they are identical. If they are not identical, the method indicates how the two formats differ.

public MediaTypeEqualFlags IsEqual(MFMediaType mediaType)

Parameters

mediaType

MFMediaType

The MFMediaType to compare.

Returns

A bitwise OR of zero or more flags, indicating the degree of similarity between the two media types.

save

reset

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IsEqualNative(MFMediaType mediaType, MediaTypeEqualFlags& flags)

Compares two media types and determines whether they are identical. If they are not identical, the method indicates how the two formats differ.

public Int32 IsEqualNative(MFMediaType mediaType, MediaTypeEqualFlags& flags)

Parameters

mediaType

MFMediaType

The MFMediaType to compare.

flags

MediaTypeEqualFlags&

Receives a bitwise OR of zero or more flags, indicating the degree of similarity between the two media types.

Returns

HRESULT

ToWaveFormat(MFWaveFormatExConvertFlags flags)

Converts the MFMediaType to a WaveFormat.

public WaveFormat ToWaveFormat(MFWaveFormatExConvertFlags flags)

Parameters

flags

MFWaveFormatExConvertFlags

Contains a flag from the MFWaveFormatExConvertFlags enumeration.

Returns

The WaveFormat which got created based on the MFMediaType.

AverageBytesPerSecond

Gets or sets the average number of bytes per second.

public Int32 AverageBytesPerSecond { get; set; }

BitsPerSample

Gets or sets the number of bits per sample.

public Int32 BitsPerSample { get; set; }

ChannelMask

Gets or sets the channelmask.

public ChannelMask ChannelMask { get; set; }

Channels

Gets or sets the number of channels.

public Int32 Channels { get; set; }

IsCompressed

Gets a value, indicating whether the media type is a temporally compressed format. Temporal compression uses information from previously decoded samples when decompressing the current sample.

public NativeBool IsCompressed { get; }

MajorType

Gets or sets the major type.

public Guid MajorType { get; set; }

SampleRate

Gets or sets the number of samples per second (for one channel each).

public Int32 SampleRate { get; set; }

SubType

Gets or sets the audio subtype.

public Guid SubType { get; set; }

Syntax

Base Type

Summary

Uses

Methods

Properties

Class Diagram