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IAMTuner::get_Channel method (strmif.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The get_Channel method retrieves the channel to which the tuner is set.

Syntax

HRESULT get_Channel(
  [out] long *plChannel,
  [out] long *plVideoSubChannel,
  [out] long *plAudioSubChannel
);

Parameters

[out] plChannel

Pointer to a variable that receives the channel. For frequencies, see International Analog TV Tuning

[out] plVideoSubChannel

Pointer to a variable that receives either the video subchannel, or one of the following flags:

Value Description
AMTUNER_SUBCHAN_DEFAULT Default subchannel
AMTUNER_SUBCHAN_NO_TUNE No subchannel tuning

[out] plAudioSubChannel

Pointer to a variable that receives either the audio subchannel, or one of the following flags:

Value Description
AMTUNER_SUBCHAN_DEFAULT Default subchannel
AMTUNER_SUBCHAN_NO_TUNE No subchannel tuning

Return value

Returns an HRESULT value that depends on the implementation of the interface.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IAMTuner Interface