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Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/MIDI.h')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Host/MIDI.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/MIDI.h b/LUFA/Drivers/USB/Class/Host/MIDI.h new file mode 100644 index 000000000..99e8ea177 --- /dev/null +++ b/LUFA/Drivers/USB/Class/Host/MIDI.h @@ -0,0 +1,163 @@ +/*
+ 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.
+*/
+
+/** \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
+ *
+ * \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
+
+ /* Public Interface - May be used in end-application: */
+ /* Type Defines: */
+ /** 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 */
+ uint8_t DataOUTPipeNumber; /**< Pipe number of the MIDI interface's streaming OUT data pipe */
+ } 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 HID_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 MIDIHost_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: */
+ /** 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
+ */
+ void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** 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 MIDIHost_EnumerationFailure_ErrorCodes_t enum
+ */
+ uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo, uint16_t ConfigDescriptorSize,
+ uint8_t* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1, 3);
+
+ /** Sends a MIDI event packet to the device. If no device is connected, the event packet is discarded.
+ *
+ * \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, 2);
+
+ /** Receives a MIDI event packet from the device.
+ *
+ * \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, 2);
+
+ /* 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* CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DComp_MIDI_Host_NextMIDIStreamingDataEndpoint(void* CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ #endif
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
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