diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Common/MIDI.h')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Common/MIDI.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Common/MIDI.h b/LUFA/Drivers/USB/Class/Common/MIDI.h new file mode 100644 index 000000000..05bd84630 --- /dev/null +++ b/LUFA/Drivers/USB/Class/Common/MIDI.h @@ -0,0 +1,171 @@ +/*
+ 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
+ * @{
+ */
+
+#ifndef _MIDI_CLASS_COMMON_H_
+#define _MIDI_CLASS_COMMON_H_
+
+ /* Includes: */
+ #include "../../USB.h"
+ #include "Audio.h"
+
+ #include <string.h>
+
+ /* 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 */
+ #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;
+
+ /** Type define for a USB MIDI event packet, used to encapsulate sent and received MIDI messages from a USB MIDI interface. */
+ typedef struct
+ {
+ unsigned char Command : 4; /**< MIDI command being sent or received in the event packet */
+ unsigned char CableNumber : 4; /**< Virtual cable number of the event being sent or received in the given MIDI interface */
+
+ uint8_t Data1; /**< First byte of data in the MIDI event */
+ uint8_t Data2; /**< Second byte of data in the MIDI event */
+ uint8_t Data3; /**< Third byte of data in the MIDI event */
+ } USB_MIDI_EventPacket_t;
+
+ /** Class state structure. An instance of this structure should be made for each MIDI interface
+ * within the user application, and passed to each of the MIDI class driver functions as the
+ * MIDIInterfaceInfo parameter. The contents of this structure should be set to their correct
+ * values when used, or ommitted to force the library to use default values.
+ */
+ typedef struct
+ {
+ uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this structure controls */
+
+ uint8_t DataINEndpointNumber; /**< Endpoint number of the incomming MIDI data, if available (zero if unused) */
+ uint16_t DataINEndpointSize; /**< Size in bytes of the incomming MIDI data endpoint, if available (zero if unused) */
+
+ uint8_t DataOUTEndpointNumber; /**< Endpoint number of the outgoing MIDI data, if available (zero if unused) */
+ uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing MIDI data endpoint, if available (zero if unused) */
+ } USB_ClassInfo_MIDI_t;
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
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