Audio class-specific Feature Unit Descriptor (USB-IF naming conventions). More...
#include <AudioClassCommon.h>
Data Fields | |
uint8_t | bControlSize |
uint8_t | bDescriptorSubtype |
uint8_t | bDescriptorType |
uint8_t | bLength |
uint8_t | bmaControls [3] |
uint8_t | bSourceID |
uint8_t | bUnitID |
uint8_t | iFeature |
Type define for an Audio class-specific Feature Unit descriptor. This indicates to the host what features are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio specification for more details.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::bControlSize |
Size of each element in the ChannelControls
array.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::bDescriptorSubtype |
Sub type value used to distinguish between audio class-specific descriptors, must be AUDIO_DSUBTYPE_CSInterface_Feature.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_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_FeatureUnit_t::bLength |
Size of the descriptor, in bytes.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::bmaControls[3] |
Feature masks for the control channel, and each separate audio channel.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::bSourceID |
Source ID value of the audio source input into this feature unit.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::bUnitID |
ID value of this feature unit - must be a unique value within the device.
uint8_t USB_Audio_StdDescriptor_FeatureUnit_t::iFeature |
Index of a string descriptor describing this descriptor within the device.