USB_Audio_StdDescriptor_InputTerminal_t Struct Reference

Audio class-specific Input Terminal Descriptor (USB-IF naming conventions). More...

#include <AudioClassCommon.h>

Data Fields
uint8_t	bLength
uint8_t	bDescriptorType
uint8_t	bDescriptorSubtype
uint8_t	bTerminalID
uint16_t	wTerminalType
uint8_t	bAssocTerminal
uint8_t	bNrChannels
uint16_t	wChannelConfig
uint8_t	iChannelNames
uint8_t	iTerminal

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Detailed Description

Type define for an Audio class-specific input terminal descriptor. This indicates to the host that the device contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example, a USB endpoint). See the USB Audio specification for more details.

See also:

USB_Audio_Descriptor_InputTerminal_t for the version of this type with non-standard LUFA specific element names.

Note:

Regardless of CPU architecture, these values should be stored as little endian.

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Field Documentation

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bAssocTerminal

ID of associated output terminal, for physically grouped terminals such as the speaker and microphone of a phone handset.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bDescriptorSubtype

Sub type value used to distinguish between audio class-specific descriptors, must be AUDIO_DSUBTYPE_CSInterface_InputTerminal.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bDescriptorType

Type of the descriptor, either a value in USB_DescriptorTypes_t or a value given by the specific class.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bLength

Size of the descriptor, in bytes.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bNrChannels

Total number of separate audio channels within this interface (right, left, etc.)

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::bTerminalID

ID value of this terminal unit - must be a unique value within the device.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::iChannelNames

Index of a string descriptor describing this channel within the device.

uint8_t USB_Audio_StdDescriptor_InputTerminal_t::iTerminal

Index of a string descriptor describing this descriptor within the device.

uint16_t USB_Audio_StdDescriptor_InputTerminal_t::wChannelConfig

CHANNEL_* masks indicating what channel layout is supported by this terminal.

uint16_t USB_Audio_StdDescriptor_InputTerminal_t::wTerminalType

Type of terminal, a TERMINAL_* mask.

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The documentation for this struct was generated from the following file:

• Drivers/USB/Class/Common/AudioClassCommon.h