CMediaType Class

Microsoft DirectShow 9.0

CMediaType Class

The CMediaType class manages media types. This class inherits the AM_MEDIA_TYPE structure. It can be cast to a variable of type AM_MEDIA_TYPE.

Requirements

**  Header:** Declared in Mtype.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

Public Methods
CMediaType	Constructor method.
~CMediaType	Destructor method.
Set	Sets the media type from another media type.
IsValid	Determines whether a major type has been assigned to this object.
Type	Retrieves the major type.
SetType	Specifies the major type.
Subtype	Retrieves the subtype.
SetSubtype	Specifies the subtype.
IsFixedSize	Determines if the samples have a fixed size or a variable size.
IsTemporalCompressed	Determines if the stream uses temporal compression.
GetSampleSize	Retrieves the sample size.
SetSampleSize	Specifies a fixed sample size, or specifies that samples have a variable size.
SetVariableSize	Specifies that samples do not have a fixed size.
SetTemporalCompression	Specifies whether samples are compressed using temporal compression.
Format	Retrieves a pointer to the format block.
FormatLength	Retrieves the length of the format block.
SetFormatType	Specifies the format type.
FormatType	Retrieves the format type.
SetFormat	Specifies the format block.
ResetFormatBuffer	Deletes the format block.
AllocFormatBuffer	Allocates memory for the format block.
ReallocFormatBuffer	Reallocates the format block to a new size.
InitMediaType	Initializes the media type.
MatchesPartial	Determines if this media type matches a partially specified media type.
IsPartiallySpecified	Determines if the media type is partially defined.
Operators
operator =	Overloads the assignment operator to copy a media type.
operator ==	Tests for equality between CMediaType objects.
operator !=	Tests for inequality between CMediaType objects.