-
- /* Type Defines: */
- /** 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.
- */
- 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 */
-
- uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
- uint16_t TotalLength; /**< Total length of the Audio class specific control descriptors, including this descriptor */
-
- uint8_t InCollection; /**< Total number of audio class interfaces within this device */
- uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
- } USB_Audio_Interface_AC_t;
-
- /** Type define for an Audio class specific MIDI streaming interface descriptor. This indicates to the host
- * how MIDI the specification compliance of the device and the total length of the Audio class specific descriptors.
- * See the USB Audio specification for more details.
- */
- 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 */
-
- uint16_t AudioSpecification; /**< 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 */
- } USB_Audio_Interface_MIDI_AS_t;
-
- /** Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
- * descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
-
- uint8_t Refresh; /**< Always set to zero */
- uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise) */
- } USB_Audio_StreamEndpoint_Std_t;
-
- /** Type define for an Audio class specific MIDI IN jack. This gives information to the host on a MIDI input, either
- * a physical input jack, or a logical jack (receiving input data internally, or from the host via an endpoint).
- */
- 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 */
-
- uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
- uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
-
- uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
- } USB_MIDI_In_Jack_t;
-
- /** Type define for an Audio class specific MIDI OUT jack. This gives information to the host on a MIDI output, either
- * a physical output jack, or a logical jack (sending output data internally, or to the host via an endpoint).
- */
- 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 */
-
- uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
- uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
-
- uint8_t NumberOfPins; /**< Number of output channels within the jack, either physical or logical */
- uint8_t SourceJackID[1]; /**< ID of each output pin's source data jack */
- uint8_t SourcePinID[1]; /**< Pin number in the input jack of each output pin's source data */
-
- uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
- } USB_MIDI_Out_Jack_t;
-
- /** Type define for an Audio class specific extended MIDI jack endpoint descriptor. This contains extra information
- * on the usage of MIDI endpoints used to stream MIDI events in and out of the USB Audio device, and follows an Audio
- * class specific extended MIDI endpoint descriptor. See the USB Audio specification for more details.
- */
- 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 */
-
- uint8_t TotalEmbeddedJacks; /**< Total number of jacks inside this endpoint */
- uint8_t AssociatedJackID[1]; /**< IDs of each jack inside the endpoint */
- } USB_MIDI_Jack_Endpoint_t;