+ /** \brief Audio class-specific Input Terminal Descriptor (LUFA naming conventions).
+ *
+ * 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 \ref USB_Audio_StdDescriptor_InputTerminal_t for the version of this type with standard element names.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * must be \ref AUDIO_DSUBTYPE_CSInterface_InputTerminal.
+ */
+
+ uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
+ uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
+ uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset.
+ */
+ uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
+ uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal. */
+
+ uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device. */
+ uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
+ } USB_Audio_Descriptor_InputTerminal_t;
+
+ /** \brief Audio class-specific Input Terminal Descriptor (USB-IF naming conventions).
+ *
+ * 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 \ref USB_Audio_Descriptor_InputTerminal_t for the version of this type with non-standard LUFA specific
+ * element names.
+ */
+ typedef struct
+ {
+ uint8_t bLength; /**< Size of the descriptor, in bytes. */
+ uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
+ * given by the specific class.
+ */
+
+ uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * must be \ref AUDIO_DSUBTYPE_CSInterface_InputTerminal.
+ */
+ uint8_t bTerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
+ uint16_t wTerminalType; /**< Type of terminal, a TERMINAL_* mask. */
+ uint8_t bAssocTerminal; /**< ID of associated output terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset.
+ */
+ uint8_t bNrChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
+ uint16_t wChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal. */
+
+ uint8_t iChannelNames; /**< Index of a string descriptor describing this channel within the device. */
+ uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
+ } USB_Audio_StdDescriptor_InputTerminal_t;
+
+ /** \brief Audio class-specific Output Terminal Descriptor (LUFA naming conventions).
+ *
+ * Type define for an Audio class-specific output terminal descriptor. This indicates to the host that the device
+ * contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
+ * a USB endpoint). See the USB Audio specification for more details.
+ *
+ * \see \ref USB_Audio_StdDescriptor_OutputTerminal_t for the version of this type with standard element names.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * must be \ref AUDIO_DSUBTYPE_CSInterface_OutputTerminal.
+ */
+
+ uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
+ uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
+ uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset.
+ */
+ uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from. */
+
+ uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
+ } USB_Audio_Descriptor_OutputTerminal_t;
+
+ /** \brief Audio class-specific Output Terminal Descriptor (USB-IF naming conventions).
+ *
+ * Type define for an Audio class-specific output terminal descriptor. This indicates to the host that the device
+ * contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
+ * a USB endpoint). See the USB Audio specification for more details.
+ *
+ * \see \ref USB_Audio_Descriptor_OutputTerminal_t for the version of this type with non-standard LUFA specific
+ * element names.
+ */
+ typedef struct
+ {
+ uint8_t bLength; /**< Size of the descriptor, in bytes. */
+ uint8_t bDescriptorType; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * must be \ref AUDIO_DSUBTYPE_CSInterface_OutputTerminal.
+ */
+
+ uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * a value from the \ref Audio_CSInterface_AC_SubTypes_t enum.
+ */
+ uint8_t bTerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
+ uint16_t wTerminalType; /**< Type of terminal, a TERMINAL_* mask. */
+ uint8_t bAssocTerminal; /**< ID of associated input terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset.
+ */
+ uint8_t bSourceID; /**< ID value of the unit this terminal's audio is sourced from. */
+
+ uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
+ } USB_Audio_StdDescriptor_OutputTerminal_t;
+
+ /** \brief Audio class-specific Interface Descriptor (LUFA naming conventions).
+ *
+ * Type define for an Audio class-specific interface descriptor. This follows a regular interface descriptor to
+ * supply extra information about the audio device's layout to the host. See the USB Audio specification for more
+ * details.
+ *
+ * \see \ref USB_Audio_StdDescriptor_Interface_AC_t for the version of this type with standard element names.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors,
+ * a value from the \ref Audio_CSInterface_AS_SubTypes_t enum.
+ */
+
+ uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version. */
+ uint16_t TotalLength; /**< Total length of the Audio class-specific descriptors, including this descriptor. */
+
+ uint8_t InCollection; /**< Total number of Audio Streaming interfaces linked to this Audio Control interface (must be 1). */
+ uint8_t InterfaceNumber; /**< Interface number of the associated Audio Streaming interface. */
+ } USB_Audio_Descriptor_Interface_AC_t;
+
+ /** \brief Audio class-specific Interface Descriptor (USB-IF naming conventions).
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