/* LUFA Library Copyright (C) Dean Camera, 2009. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ /* Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that the copyright notice and this permission notice and warranty disclaimer appear in supporting documentation, and that the name of the author not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. The author disclaim all warranties with regard to this software, including all implied warranties of merchantability and fitness. In no event shall the author be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this software. */ #ifndef _MIDI_CLASS_H_ #define _MIDI_CLASS_H_ /* Includes: */ #include "../../USB.h" #include "Audio.h" #include /* Enable C linkage for C++ Compilers: */ #if defined(__cplusplus) extern "C" { #endif /* Macros: */ /** Audio class descriptor subtype value for a Audio class specific MIDI input jack descriptor. */ #define DSUBTYPE_InputJack 0x02 /** Audio class descriptor subtype value for a Audio class specific MIDI output jack descriptor. */ #define DSUBTYPE_OutputJack 0x03 /** Audio class descriptor jack type value for an embedded (logical) MIDI input or output jack. */ #define MIDI_JACKTYPE_EMBEDDED 0x01 /** Audio class descriptor jack type value for an external (physical) MIDI input or output jack. */ #define MIDI_JACKTYPE_EXTERNAL 0x02 /** MIDI command for a note on (activation) event */ #define MIDI_COMMAND_NOTE_ON 0x09 /** MIDI command for a note off (deactivation) event */ #define MIDI_COMMAND_NOTE_OFF 0x08 /** Standard key press velocity value used for all note events, as no pressure sensor is mounted */ #define MIDI_STANDARD_VELOCITY 64 /** Convenience macro. MIDI channels are numbered from 1-10 (natural numbers) however the logical channel * addresses are zero-indexed. This converts a natural MIDI channel number into the logical channel address. * * \param channel MIDI channel number to address */ #define MIDI_CHANNEL(channel) (channel - 1) /* Type Defines: */ /** 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_AudioInterface_MIDI_AS_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; typedef struct { unsigned char Command : 4; unsigned char CableNumber : 4; uint8_t Data1; uint8_t Data2; uint8_t Data3; } USB_MIDI_EventPacket_t; typedef struct { uint8_t StreamingInterfaceNumber; uint8_t DataINEndpointNumber; uint16_t DataINEndpointSize; uint8_t DataOUTEndpointNumber; uint16_t DataOUTEndpointSize; bool InterfaceEnabled; } USB_ClassInfo_MIDI_t; /* Function Prototypes: */ bool USB_MIDI_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo); void USB_MIDI_USBTask(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo); void USB_MIDI_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event); bool USB_MIDI_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event); /* Disable C linkage for C++ Compilers: */ #if defined(__cplusplus) } #endif #endif