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IAMAudioInputMixer::get_MixLevel 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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_MixLevel method retrieves the recording level.

Syntax

HRESULT get_MixLevel(
  [out] double *pLevel
);

Parameters

[out] pLevel

Receives the recording level. The following values are possible.

Value Description
0.0 to 1.0 Zero indicates that the recording level is off; the value 1.0 indicates that the recording level is at full volume. Intermediate values are also allowed.
AMF_AUTOMATICGAIN Automatic adjustment of the recording level is enabled.

Return value

If the method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.

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

IAMAudioInputMixer Interface

IAMAudioInputMixer::put_MixLevel