Microsoft DirectX 9.0


The SetTransportAudioParameters assigns audio parameter settings for external transport.


HRESULT SetTransportAudioParameters(
  long Param,
  long Value



[in]  Specifies the audio parameter you want to set as a long integer.

Value Description
ED_TRANSAUDIO_ENABLE_OUTPUT Enable audio channel(s) for output.
ED_TRANSAUDIO_ENABLE_RECORD Enable audio channel(s) for recording.
ED_TRANSAUDIO_ENABLE_SELSYNC Enable audio channel(s) for selsync recording.
ED_TRANSAUDIO_SET_MONITOR Set the monitor output source.
ED_TRANSAUDIO_SET_SOURCE Set the active audio input.


[in]  Specifies which audio channel or channels is assigned the parameter as a long integer.

Return Values

When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.


Specify an exact channel or channels in Value by selecting ED_AUDIO_1 through ED_AUDIO_24 (use a bitwise OR to combine), or all channels by selecting ED_AUDIO_ALL.

DV Implementation

MSDV does not support this method. It returns E_NOTIMPL.

See Also