You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
206 lines
9.9 KiB
206 lines
9.9 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2010.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, distribute, and sell this
|
|
software and its documentation for any purpose is hereby granted
|
|
without fee, 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.
|
|
*/
|
|
|
|
/** \file
|
|
* \brief Host mode driver for the library USB MIDI Class driver.
|
|
*
|
|
* Host mode driver for the library USB MIDI Class driver.
|
|
*
|
|
* \note This file should not be included directly. It is automatically included as needed by the class driver
|
|
* dispatch header located in LUFA/Drivers/USB/Class/MIDI.h.
|
|
*/
|
|
|
|
/** \ingroup Group_USBClassMIDI
|
|
* @defgroup Group_USBClassMIDIHost MIDI Class Host Mode Driver
|
|
*
|
|
* \section Sec_Dependencies Module Source Dependencies
|
|
* The following files must be built with any user project that uses this module:
|
|
* - LUFA/Drivers/USB/Class/Host/MIDI.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
|
|
*
|
|
* \section Module Description
|
|
* Host Mode USB Class driver framework interface, for the MIDI USB Class driver.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef __MIDI_CLASS_HOST_H__
|
|
#define __MIDI_CLASS_HOST_H__
|
|
|
|
/* Includes: */
|
|
#include "../../USB.h"
|
|
#include "../Common/MIDI.h"
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Preprocessor Checks: */
|
|
#if !defined(__INCLUDE_FROM_MIDI_DRIVER)
|
|
#error Do not include this file directly. Include LUFA/Drivers/Class/MIDI.h instead.
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Type Defines: */
|
|
/** \brief MIDI Class Host Mode Configuration and State Structure.
|
|
*
|
|
* Class state structure. An instance of this structure should be made within the user application,
|
|
* and passed to each of the MIDI class driver functions as the MIDIInterfaceInfo parameter. This
|
|
* stores each MIDI interface's configuration and state information.
|
|
*/
|
|
typedef struct
|
|
{
|
|
const struct
|
|
{
|
|
uint8_t DataINPipeNumber; /**< Pipe number of the MIDI interface's streaming IN data pipe. */
|
|
bool DataINPipeDoubleBank; /**< Indicates if the MIDI interface's IN data pipe should use double banking. */
|
|
|
|
uint8_t DataOUTPipeNumber; /**< Pipe number of the MIDI interface's streaming OUT data pipe. */
|
|
bool DataOUTPipeDoubleBank; /**< Indicates if the MIDI interface's OUT data pipe should use double banking. */
|
|
} Config; /**< Config data for the USB class interface within the device. All elements in this section
|
|
* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
|
|
*/
|
|
struct
|
|
{
|
|
bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
|
|
* after \ref MIDI_Host_ConfigurePipes() is called and the Host state machine is in the
|
|
* Configured state.
|
|
*/
|
|
|
|
uint16_t DataINPipeSize; /**< Size in bytes of the MIDI Streaming Data interface's IN data pipe. */
|
|
uint16_t DataOUTPipeSize; /**< Size in bytes of the MIDI Streaming Data interface's OUT data pipe. */
|
|
} State; /**< State data for the USB class interface within the device. All elements in this section
|
|
* <b>may</b> be set to initial values, but may also be ignored to default to sane values when
|
|
* the interface is enumerated.
|
|
*/
|
|
} USB_ClassInfo_MIDI_Host_t;
|
|
|
|
/* Enums: */
|
|
/** Enum for the possible error codes returned by the \ref MIDI_Host_ConfigurePipes() function. */
|
|
enum MIDI_Host_EnumerationFailure_ErrorCodes_t
|
|
{
|
|
MIDI_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully. */
|
|
MIDI_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor. */
|
|
MIDI_ENUMERROR_NoStreamingInterfaceFound = 2, /**< A compatible MIDI interface was not found in the device's Configuration Descriptor. */
|
|
MIDI_ENUMERROR_EndpointsNotFound = 3, /**< Compatible MIDI data endpoints were not found in the device's MIDI interface. */
|
|
};
|
|
|
|
/* Function Prototypes: */
|
|
/** Host interface configuration routine, to configure a given MIDI host interface instance using the Configuration
|
|
* Descriptor read from an attached USB device. This function automatically updates the given MIDI Host instance's
|
|
* state values and configures the pipes required to communicate with the interface if it is found within the device.
|
|
* This should be called once after the stack has enumerated the attached device, while the host state machine is in
|
|
* the Addressed state.
|
|
*
|
|
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing an MIDI Class host configuration and state.
|
|
* \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor.
|
|
* \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor.
|
|
*
|
|
* \return A value from the \ref MIDI_Host_EnumerationFailure_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
uint16_t ConfigDescriptorSize,
|
|
void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
|
|
|
|
/** Sends a MIDI event packet to the device. If no device is connected, the event packet is discarded.
|
|
*
|
|
* \pre This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
|
|
* call will fail.
|
|
*
|
|
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
|
|
* \param[in] Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send.
|
|
*
|
|
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t MIDI_Host_SendEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
|
|
|
|
/** Flushes the MIDI send buffer, sending any queued MIDI events to the device. This should be called to override the
|
|
* \ref MIDI_Host_SendEventPacket() function's packing behaviour, to flush queued events. Events are queued into the
|
|
* pipe bank until either the pipe bank is full, or \ref MIDI_Host_Flush() is called. This allows for multiple MIDI
|
|
* events to be packed into a single pipe packet, increasing data throughput.
|
|
*
|
|
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
|
|
*
|
|
* \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t MIDI_Host_Flush(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
|
|
|
|
/** Receives a MIDI event packet from the device.
|
|
*
|
|
* \pre This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
|
|
* call will fail.
|
|
*
|
|
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state.
|
|
* \param[out] Event Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed.
|
|
*
|
|
* \return Boolean true if a MIDI event packet was received, false otherwise.
|
|
*/
|
|
bool MIDI_Host_ReceiveEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
|
|
|
|
/* Inline Functions: */
|
|
/** General management task for a given MIDI host class interface, required for the correct operation of the interface. This should
|
|
* be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
|
|
*
|
|
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing an MIDI Class host configuration and state.
|
|
*/
|
|
static inline void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
|
|
static inline void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
|
|
{
|
|
(void)MIDIInterfaceInfo;
|
|
}
|
|
|
|
/* Private Interface - For use in library only: */
|
|
#if !defined(__DOXYGEN__)
|
|
/* Macros: */
|
|
#define MIDI_STREAMING_CLASS 0x01
|
|
#define MIDI_STREAMING_SUBCLASS 0x03
|
|
#define MIDI_STREAMING_PROTOCOL 0x00
|
|
|
|
#define MIDI_FOUND_DATAPIPE_IN (1 << 0)
|
|
#define MIDI_FOUND_DATAPIPE_OUT (1 << 1)
|
|
|
|
/* Function Prototypes: */
|
|
#if defined(__INCLUDE_FROM_MIDI_CLASS_HOST_C)
|
|
static uint8_t DCOMP_MIDI_Host_NextMIDIStreamingInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
|
|
static uint8_t DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
|
|
#endif
|
|
#endif
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|