FormatAudioGetByIndex Method (IMFFormat)

VB.Net
C#
Delphi
C++

Sub FormatAudioGetByIndex( _
   ByVal _eFormatType As eMFormatType, _
   ByVal _nIndex As Integer, _
   ByRef _pAudProps As M_AUD_PROPS, _
   ByRef _pbsName As String _
)

void FormatAudioGetByIndex( 
   eMFormatType _eFormatType,
   int _nIndex,
   out M_AUD_PROPS _pAudProps,
   out string _pbsName
)

procedure FormatAudioGetByIndex( 
    _eFormatType: eMFormatType;
    _nIndex: Integer;
   Out  _pAudProps: M_AUD_PROPS;
   Out  _pbsName: String
);

void FormatAudioGetByIndex( 
   eMFormatType _eFormatType,
   int _nIndex,
   [PARAMFLAG::Out] M_AUD_PROPS _pAudProps,
   [PARAMFLAG::Out] BSTR* _pbsName
)

Parameters

_eFormatType: format's type
_nIndex: format's index
_pAudProps: audio properties
_pbsName: format's name

Here is an example of how to fill a combobox with all available input audio formats for a live source and select a current format:

C#

M_AUD_PROPS audProps;
int fCount;
m_objLive.FormatAudioGetCount(eMFormatType.eMFT_Input, out fCount);
if (fCount > 0)
{
    for (int i = 0; i < fCount; i++)
    {
        string name;
        m_objLive.FormatAudioGetByIndex(eMFormatType.eMFT_Input, i, out audProps, out name);
        comboBoxAF.Items.Add(name);
    }
    // Get current format
    int nCurrent = 0;
    try
    {
        string strName;
        M_AUD_PROPS _audProps;
        m_objLive.FormatAudioGet(eMFormatType.eMFT_Input, out _audProps, out nCurrent, out strName);
    }
    catch (System.Exception) { }
    // Select a current format
    comboBoxAF.SelectedIndex = nCurrent;
}

Reference

IMFFormat Interface
IMFFormat Members