FormatAudioGet Method (MMixerClass)

VB.Net
C#
Delphi
C++

Public Overridable Sub FormatAudioGet( _
   ByVal _eFormatType As eMFormatType, _
   ByRef _pAudProps As M_AUD_PROPS, _
   ByRef _pnIndex As Integer, _
   ByRef _pbsName As String _
)

public virtual void FormatAudioGet( 
   eMFormatType _eFormatType,
   out M_AUD_PROPS _pAudProps,
   out int _pnIndex,
   out string _pbsName
)

public procedure FormatAudioGet( 
    _eFormatType: eMFormatType;
   Out  _pAudProps: M_AUD_PROPS;
   Out  _pnIndex: Integer;
   Out  _pbsName: String
); virtual;

public: virtual void FormatAudioGet( 
   eMFormatType _eFormatType,
   [PARAMFLAG::Out] M_AUD_PROPS _pAudProps,
   [PARAMFLAG::Out] int _pnIndex,
   [PARAMFLAG::Out] BSTR* _pbsName
)

Parameters

_eFormatType: type of the format
_pAudProps: properties of current audio format (bitrate, number of channels, value of samples per second and number of tracks)
_pnIndex: number of channel
_pbsName: full name of format (for example, "44100 Hz, 6 Ch, 16-bit")

Here is example of how to set custom format to the playlist:

Visual Basic
C#
Delphi

Dim nIndex As Integer
Dim strFormat As String
Dim audProps As M_AUD_PROPS
Dim myPlaylist As New MPlaylistClass()
myPlaylist.FormatAudioGet(eMFormatType.eMFT_Output, audProps, nIndex, strFormat)
audProps.nSamplesPerSec = 48000
myPlaylist.FormatAudioSet(eMFormatType.eMFT_Convert, audProps)

int nIndex;
string strFormat;
M_AUD_PROPS audProps;
MPlaylistClass myPlaylist = new MPlaylistClass();
myPlaylist.FormatAudioGet(eMFormatType.eMFT_Output, out audProps, out nIndex, out strFormat);
audProps.nSamplesPerSec = 48000;
myPlaylist.FormatAudioSet(eMFormatType.eMFT_Convert, ref audProps);

var
m_objPlaylist;;
m_pFormat;
audProps: M_AUD_PROPS;
strFormat: string;
nIndex: integer;
begin
m_objPlaylist:= CreateComObject(CLASS_MPlaylist) as MPlaylist;
m_pFormat := m_objPlaylist as IMFormat;
m_pFormat.FormatAudioGet(eMFT_Output, audProps, nIndex, strFormat);
audPorps.nSamplesPerSec := 48000;
m_pFormat.FormatAudioSet(eMFT_Convert, audProps);
end;

Reference

MMixerClass Class
MMixerClass Members