Remarks
Obtains the type of a given input device and if it's a loopback device (*).
IMPORTANT NOTE ABOUT THE WINDOWS VERSION: This method is only intended for usage with Windows Vista and later versions; for Windows XP use the GetInputDeviceChannelType method.
|
(*) Loopback devices are recording devices, available starting from Windows Vista, that capture the mixing of all of the audio streams being rendered by a specific render device, also if audio streams are being played by third-party multimedia application like Windows Media Player: each render device always has a corresponding loopback device.
Syntax
Parameter
|
Description
|
|
|
nInputDevice
|
Number representing the zero-based index of the input device
|
nDeviceType
|
Reference that, on return from the method call, will contain the type of input device.
Supported values are the following:
Mnemonic Value
|
Value
|
Meaning
|
DEVICE_TYPE_NETWORK_DEVICE
|
0
|
An audio endpoint device that the user accesses remotely through a network.
|
DEVICE_TYPE_SPEAKERS
|
1
|
A set of speakers.
|
DEVICE_TYPE_LINE_LEVEL
|
2
|
An audio endpoint device that sends a line-level analog signal to a line-input jack on an audio adapter or that receives a line-level analog signal from a line-output jack on the adapter.
|
DEVICE_TYPE_HEADPHONES
|
3
|
A set of headphones.
|
DEVICE_TYPE_MICROPHONE
|
4
|
A microphone.
|
DEVICE_TYPE_HEADSET
|
5
|
An earphone or a pair of earphones with an attached mouthpiece for two-way communication.
|
DEVICE_TYPE_HANDSET
|
6
|
The part of a telephone that is held in the hand and that contains a speaker and a microphone for two-way communication.
|
DEVICE_TYPE_DIGITAL_PASSTHROUGH
|
7
|
An audio endpoint device that connects to an audio adapter through a connector for a digital interface of unknown type that transmits non-PCM data in digital pass-through mode.
|
DEVICE_TYPE_SPDIF
|
8
|
An audio endpoint device that connects to an audio adapter through a Sony/Philips Digital Interface (S/PDIF) connector.
|
DEVICE_TYPE_HDMI
|
9
|
An audio endpoint device that connects to an audio adapter through a High-Definition Multimedia Interface (HDMI) connector or a display port.
|
DEVICE_TYPE_UNKNOWN
|
10
|
An audio endpoint device with unknown physical attributes.
|
DEVICE_TYPE_DISPLAYPORT
|
11
|
An audio endpoint device that connects to an audio adapter through a DisplayPort connector
|
|
bIsLoopback
|
Reference that, on return from the method call, will tell if the device is a loopback.
Supported values are the following:
Mnemonic constant
|
Value
|
Meaning
|
false
|
0
|
The device is not a loopback (see the tutorial )
|
true
|
1
|
The device is a loopback
|
|
Return value
Value
|
Meaning
|
|
|
Negative value
|
An error occurred (see the LastError property for further error details)
|
enumErrorCodes.ERR_NOERROR (0)
|
The method call was successful
|
|
