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NF:endpointvolume.IAudioEndpointVolume.GetChannelVolumeLevel |
IAudioEndpointVolume::GetChannelVolumeLevel (endpointvolume.h) |
The GetChannelVolumeLevel method gets the volume level, in decibels, of the specified channel in the audio stream that enters or leaves the audio endpoint device. |
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coreaudio\iaudioendpointvolume_getchannelvolumelevel.htm |
CoreAudio |
3c5b594f-60b5-4172-8e4e-440b51cb13f4 |
12/05/2018 |
GetChannelVolumeLevel, GetChannelVolumeLevel method [Core Audio], GetChannelVolumeLevel method [Core Audio],IAudioEndpointVolume interface, IAudioEndpointVolume interface [Core Audio],GetChannelVolumeLevel method, IAudioEndpointVolume.GetChannelVolumeLevel, IAudioEndpointVolume::GetChannelVolumeLevel, IAudioEndpointVolumeGetChannelVolumeLevel, coreaudio.iaudioendpointvolume_getchannelvolumelevel, endpointvolume/IAudioEndpointVolume::GetChannelVolumeLevel |
endpointvolume.h |
Windows |
Windows Vista [desktop apps \| UWP apps] |
Windows Server 2008 [desktop apps \| UWP apps] |
Windows |
19H1 |
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The GetChannelVolumeLevel method gets the volume level, in decibels, of the specified channel in the audio stream that enters or leaves the audio endpoint device.
The channel number. If the audio stream has n channels, the channels are numbered from 0 to n– 1. To obtain the number of channels in the stream, call the IAudioEndpointVolume::GetChannelCount method.
Pointer to a float variable into which the method writes the volume level in decibels. To get the range of volume levels obtained from this method, call the IAudioEndpointVolume::GetVolumeRange method.
If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.
| Return code | Description |
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Parameter nChannel is greater than or equal to the number of channels in the stream. |
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Parameter pfLevelDB is NULL. |
IAudioEndpointVolume Interface