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Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/MIDI.h')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Host/MIDI.h | 201 |
1 files changed, 201 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 0000000..0cb778f --- /dev/null +++ b/LUFA/Drivers/USB/Class/Host/MIDI.h @@ -0,0 +1,201 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ 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 USB module driver
+ * dispatch header located in LUFA/Drivers/USB.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/USB.h instead.
+ #endif
+
+ #if defined(__INCLUDE_FROM_MIDI_HOST_C) && defined(NO_STREAM_CALLBACKS)
+ #error The NO_STREAM_CALLBACKS compile time option cannot be used in projects using the library Class drivers.
+ #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.
+ */
+ uint8_t InterfaceNumber; /**< Interface index of the MIDI interface within the attached device. */
+
+ 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_NoCompatibleInterfaceFound = 2, /**< A compatible MIDI interface was not found in the device's Configuration Descriptor. */
+ };
+
+ /* 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.
+ *
+ * \note The pipe index numbers as given in the interface's configuration structure must not overlap with any other
+ * interface, or pipe bank corruption will occur. Gaps in the allocated pipe numbers or non-sequential indexes
+ * within a single interface is allowed, but no two interfaces of any type have have interleaved pipe indexes.
+ *
+ * \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);
+
+ /** 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);
+
+ /** 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 \ref 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 \ref 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);
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_MIDI_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
+
+/** @} */
+
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