IAMTuner::get_Channel method (strmif.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 |