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CoreAudioDevices.CapturePartChannelVolumeGet method |
  
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CoreAudioDevices.CapturePartChannelVolumeGet method |
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Remarks
Obtains the channel's level of a part embedded inside the given capture audio endpoint device. The current level for the same part can be modified through the CoreAudioDevices.CapturePartChannelVolumeSet method.
This method is only intended for usage with Windows Vista and later versions: further information about management of audio devices in Windows Vista and later versions can be found inside the How to access settings of audio devices in Windows Vista and later versions tutorial.
For further details about methods related to the management of core audio devices refer to the CoreAudioDevices COM object.
Syntax
[Visual Basic] control.CoreAudioDevices.CapturePartChannelVolumeGet ( nDeviceIndex as Integer, nPartId as enumCoreAudioCaptureParts, nChannel as Integer, fLevelIndB as Single, fRangeMinIndB as Single, fRangeMaxIndB as Single, fSteppingIndB as Single ) as enumErrorCodes |
[C++] short control.CoreAudioDevices.CapturePartChannelVolumeGet ( short nDeviceIndex, short nPartId, short nChannel, float *fLevelIndB, float *fRangeMinIndB, float *fRangeMaxIndB, float *fSteppingIndB ); |
Parameter |
Description |
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nDeviceIndex |
Zero-based index of the capture audio endpoint device. The total number of capture audio endpoint devices can be obtained through the CoreAudioDevices.CountGet method passing DEVICE_DATA_FLOW_CAPTURE to the nDataFlow parameter. |
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nPartId |
Identifier of the capture part. Supported values are the following:
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nChannel |
Zero-based index of the channel. The total number of channels can be obtained through the CoreAudioDevices.CapturePartChannelCountGet method. |
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fLevelIndB |
Reference that, on return from the method call, will contain the volume level expressed in dB |
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fRangeMinIndB |
Reference that, on return from the method call, will contain the minimum supported level in dB. |
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fRangeMaxIndB |
Reference that, on return from the method call, will contain the maximum supported level in dB. |
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fSteppingIndB |
Reference that, on return from the method call, will contain the stepping value between consecutive levels in the range fRangeMinIndB to fRangeMaxIndB. |
Return value
Value |
Meaning |
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Negative value |
An error occurred, check the LastError property value in order to get the error code |
enumErrorCodes.ERR_NOERROR (0) |
The method call was successful |
