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140 lines
6.4 KiB
140 lines
6.4 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \ingroup Group_USBClassMIDI
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* @defgroup Group_USBClassMIDIDevice MIDI Class Device Mode Driver
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*
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* \section Sec_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - LUFA/Drivers/USB/Class/Device/MIDI.c
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*
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* \section Module Description
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* Device Mode USB Class driver framework interface, for the MIDI USB Class driver.
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*
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* @{
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*/
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#ifndef _MIDI_CLASS_DEVICE_H_
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#define _MIDI_CLASS_DEVICE_H_
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/* Includes: */
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#include "../../USB.h"
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#include "../Common/MIDI.h"
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#include "Audio.h"
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#include <string.h>
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Type Define: */
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/** Class state structure. An instance of this structure should be made for each MIDI interface
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* within the user application, and passed to each of the MIDI class driver functions as the
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* MIDIInterfaceInfo parameter. This stores each MIDI interface's configuration and state information.
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*/
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typedef struct
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{
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const struct
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{
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uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this structure controls */
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uint8_t DataINEndpointNumber; /**< Endpoint number of the incomming MIDI data, if available (zero if unused) */
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uint16_t DataINEndpointSize; /**< Size in bytes of the incomming MIDI data endpoint, if available (zero if unused) */
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uint8_t DataOUTEndpointNumber; /**< Endpoint number of the outgoing MIDI data, if available (zero if unused) */
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uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing MIDI data endpoint, if available (zero if unused) */
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} Config; /**< Config data for the USB class interface within the device. All elements in this section
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* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
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*/
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struct
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{
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// No state information for this class yet
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} State; /**< State data for the USB class interface within the device. All elements in this section
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* are reset to their defaults when the interface is enumerated.
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*/
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} USB_ClassInfo_MIDI_Device_t;
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/* Function Prototypes: */
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/** Configures the endpoints of a given MIDI interface, ready for use. This should be linked to the library
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* \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
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* containing the given MIDI interface is selected.
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*
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* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
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*
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* \return Boolean true if the endpoints were sucessfully configured, false otherwise
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*/
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bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Processes incomming control requests from the host, that are directed to the given MIDI class interface. This should be
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* linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.
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*
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* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
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*/
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void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** General management task for a given MIDI class interface, required for the correct operation of the interface. This should
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* be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
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*
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* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
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*/
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void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded.
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*
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* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
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* \param[in] Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send
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*
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* \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum
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*/
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uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
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MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1, 2);
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/** Receives a MIDI event packet from the host.
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*
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* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
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* \param[out] Event Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed
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*
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* \return Boolean true if a MIDI event packet was received, false otherwise
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*/
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bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
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MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1, 2);
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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