- uint8_t NumberOfPins; /**< Number of output channels within the jack, either physical or logical */\r
- uint8_t SourceJackID[1]; /**< ID of each output pin's source data jack */\r
- uint8_t SourcePinID[1]; /**< Pin number in the input jack of each output pin's source data */\r
- \r
- uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */\r
- } USB_MIDI_Out_Jack_t;\r
- \r
- /** Type define for an Audio class specific extended MIDI jack endpoint descriptor. This contains extra information\r
- * on the usage of MIDI endpoints used to stream MIDI events in and out of the USB Audio device, and follows an Audio\r
- * class specific extended MIDI endpoint descriptor. See the USB Audio specification for more details.\r
- */\r
- typedef struct\r
- {\r
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */\r
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */\r
-\r
- uint8_t TotalEmbeddedJacks; /**< Total number of jacks inside this endpoint */\r
- uint8_t AssociatedJackID[1]; /**< IDs of each jack inside the endpoint */\r
- } USB_MIDI_Jack_Endpoint_t;\r
-\r
- /** Type define for a USB MIDI event packet, used to encapsulate sent and received MIDI messages from a USB MIDI interface. */\r
- typedef struct\r
- {\r
- unsigned char Command : 4; /**< MIDI command being sent or received in the event packet */\r
- unsigned char CableNumber : 4; /**< Virtual cable number of the event being sent or received in the given MIDI interface */\r
- \r
- uint8_t Data1; /**< First byte of data in the MIDI event */\r
- uint8_t Data2; /**< Second byte of data in the MIDI event */\r
- uint8_t Data3; /**< Third byte of data in the MIDI event */ \r
- } USB_MIDI_EventPacket_t;\r
-\r
- /** Class state structure. An instance of this structure should be made for each MIDI interface\r
- * within the user application, and passed to each of the MIDI class driver functions as the\r
- * MIDIInterfaceInfo parameter. The contents of this structure should be set to their correct\r
- * values when used, or ommitted to force the library to use default values.\r
- */\r
- typedef struct\r
- {\r
- uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this structure controls */\r
-\r
- uint8_t DataINEndpointNumber; /**< Endpoint number of the incomming MIDI data, if available (zero if unused) */\r
- uint16_t DataINEndpointSize; /**< Size in bytes of the incomming MIDI data endpoint, if available (zero if unused) */\r
-\r
- uint8_t DataOUTEndpointNumber; /**< Endpoint number of the outgoing MIDI data, if available (zero if unused) */\r
- uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing MIDI data endpoint, if available (zero if unused) */\r
- } USB_ClassInfo_MIDI_t;\r
- \r
- /* Function Prototypes: */\r
- /** Configures the endpoints of a given MIDI interface, ready for use. This should be linked to the library\r
- * \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration\r
- * containing the given MIDI interface is selected.\r
- *\r
- * \param MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.\r
- *\r
- * \return Boolean true if the endpoints were sucessfully configured, false otherwise\r
- */\r
- bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
- \r
- /** Processes incomming control requests from the host, that are directed to the given MIDI class interface. This should be\r
- * linked to the library \ref EVENT_USB_UnhandledControlPacket() event.\r
- *\r
- * \param MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.\r
- */ \r
- void MIDI_Device_ProcessControlPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
-\r
- /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should\r
- * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
- *\r
- * \param MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.\r
- */\r
- void MIDI_Device_USBTask(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
-\r
- /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded.\r
- *\r
- * \param MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.\r
- * \param Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send\r
- */\r
- void MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);\r
-\r
- /** Receives a MIDI event packet from the host.\r
- *\r
- * \param MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.\r
- * \param Event Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed\r
- *\r
- * \return Boolean true if a MIDI event packet was received, false otherwise\r
- */\r
- bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);\r
+ /** Processes incoming control requests from the host, that are directed to the given MIDI class interface. This should be\r
+ * linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.\r
+ *\r
+ * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state\r
+ */ \r
+ void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. Events are queued into the\r
+ * endpoint bank until either the endpoint bank is full, or \ref MIDI_Device_Flush() is called. This allows for multiple\r
+ * MIDI events to be packed into a single endpoint packet, increasing data throughput.\r
+ *\r
+ * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or\r
+ * the call will fail.\r
+ *\r
+ * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state\r
+ * \param[in] Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send\r
+ *\r
+ * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum \r
+ */\r
+ uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,\r
+ MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r
+\r
+\r
+ /** Flushes the MIDI send buffer, sending any queued MIDI events to the host. This should be called to override the\r
+ * \ref MIDI_Device_SendEventPacket() function's packing behaviour, to flush queued events.\r
+ *\r
+ * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state\r
+ *\r
+ * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum\r
+ */\r
+ uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo);\r
+\r
+ /** Receives a MIDI event packet from the host. Events are unpacked from the endpoint, thus if the endpoint bank contains\r
+ * multiple MIDI events from the host in the one packet, multiple calls to this function will return each individual event.\r
+ *\r
+ * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or\r
+ * the call will fail.\r
+ *\r
+ * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state\r
+ * \param[out] Event Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed\r
+ *\r
+ * \return Boolean true if a MIDI event packet was received, false otherwise\r
+ */\r
+ bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,\r
+ MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r
+\r
+ /* Inline Functions: */\r
+ /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should\r
+ * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
+ *\r
+ * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state\r
+ */\r
+ static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo);\r
+ static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)\r
+ {\r
+ (void)MIDIInterfaceInfo;\r
+ } \r
projects / pub / USBasp.git / blobdiff