IAMTuner::put_Channel method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 put_Channel method sets the TV channel.

Syntax

HRESULT put_Channel(
  [in] long lChannel,
       long lVideoSubChannel,
       long lAudioSubChannel
);

Parameters

[in] lChannel

TV channel number.

lVideoSubChannel

Predefined video subchannel value. Specify AMTUNER_SUBCHAN_NO_TUNE for no tuning or AMTUNER_SUBCHAN_DEFAULT for default subchannel. Meaningful only for satellite broadcasts.

lAudioSubChannel

Predefined audio subchannel value. Specify AMTUNER_SUBCHAN_NO_TUNE for no tuning or AMTUNER_SUBCHAN_DEFAULT for default subchannel. Meaningful only for satellite broadcasts.

Return value

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

Remarks

This method handles the channel-to-frequency function call that converts the TV channel to a TV frequency. For a list of frequencies for channels, see International Analog TV Tuning.

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