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Edit File : midi.h \| Size : 3.35 KB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note / / * <linux/usb/midi.h> -- USB MIDI definitions. * * Copyright (C) 2006 Thumtronics Pty Ltd. * Developed for Thumtronics by Grey Innovation * Ben Williamson <ben.williamson@greyinnovation.com> * * This software is distributed under the terms of the GNU General Public * License ("GPL") version 2, as published by the Free Software Foundation. * * This file holds USB constants and structures defined * by the USB Device Class Definition for MIDI Devices. * Comments below reference relevant sections of that document: * * http://www.usb.org/developers/devclass_docs/midi10.pdf / #ifndef __LINUX_USB_MIDI_H #define __LINUX_USB_MIDI_H #include <linux/types.h> / A.1 MS Class-Specific Interface Descriptor Subtypes / #define USB_MS_HEADER 0x01 #define USB_MS_MIDI_IN_JACK 0x02 #define USB_MS_MIDI_OUT_JACK 0x03 #define USB_MS_ELEMENT 0x04 / A.2 MS Class-Specific Endpoint Descriptor Subtypes / #define USB_MS_GENERAL 0x01 / A.3 MS MIDI IN and OUT Jack Types / #define USB_MS_EMBEDDED 0x01 #define USB_MS_EXTERNAL 0x02 / 6.1.2.1 Class-Specific MS Interface Header Descriptor / struct usb_ms_header_descriptor { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubtype; __le16 bcdMSC; __le16 wTotalLength; } __attribute__ ((packed)); #define USB_DT_MS_HEADER_SIZE 7 / 6.1.2.2 MIDI IN Jack Descriptor / struct usb_midi_in_jack_descriptor { __u8 bLength; __u8 bDescriptorType; / USB_DT_CS_INTERFACE / __u8 bDescriptorSubtype; / USB_MS_MIDI_IN_JACK / __u8 bJackType; / USB_MS_EMBEDDED/EXTERNAL / __u8 bJackID; __u8 iJack; } __attribute__ ((packed)); #define USB_DT_MIDI_IN_SIZE 6 struct usb_midi_source_pin { __u8 baSourceID; __u8 baSourcePin; } __attribute__ ((packed)); / 6.1.2.3 MIDI OUT Jack Descriptor / struct usb_midi_out_jack_descriptor { __u8 bLength; __u8 bDescriptorType; / USB_DT_CS_INTERFACE / __u8 bDescriptorSubtype; / USB_MS_MIDI_OUT_JACK / __u8 bJackType; / USB_MS_EMBEDDED/EXTERNAL / __u8 bJackID; __u8 bNrInputPins; / p / struct usb_midi_source_pin pins[]; / [p] / /__u8 iJack; -- omitted due to variable-sized pins[] / } __attribute__ ((packed)); #define USB_DT_MIDI_OUT_SIZE(p) (7 + 2 (p)) /* As above, but more useful for defining your own descriptors: / #define DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(p) \ struct usb_midi_out_jack_descriptor_##p { \ __u8 bLength; \ __u8 bDescriptorType; \ __u8 bDescriptorSubtype; \ __u8 bJackType; \ __u8 bJackID; \ __u8 bNrInputPins; \ struct usb_midi_source_pin pins[p]; \ __u8 iJack; \ } __attribute__ ((packed)) / 6.2.2 Class-Specific MS Bulk Data Endpoint Descriptor / struct usb_ms_endpoint_descriptor { __u8 bLength; / 4+n / __u8 bDescriptorType; / USB_DT_CS_ENDPOINT / __u8 bDescriptorSubtype; / USB_MS_GENERAL / __u8 bNumEmbMIDIJack; / n / __u8 baAssocJackID[]; / [n] / } __attribute__ ((packed)); #define USB_DT_MS_ENDPOINT_SIZE(n) (4 + (n)) / As above, but more useful for defining your own descriptors: / #define DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(n) \ struct usb_ms_endpoint_descriptor_##n { \ __u8 bLength; \ __u8 bDescriptorType; \ __u8 bDescriptorSubtype; \ __u8 bNumEmbMIDIJack; \ __u8 baAssocJackID[n]; \ } __attribute__ ((packed)) #endif / __LINUX_USB_MIDI_H */ Back

Edit File : midi.h | Size : 3.35 KB

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * <linux/usb/midi.h> -- USB MIDI definitions.
 *
 * Copyright (C) 2006 Thumtronics Pty Ltd.
 * Developed for Thumtronics by Grey Innovation
 * Ben Williamson <ben.williamson@greyinnovation.com>
 *
 * This software is distributed under the terms of the GNU General Public
 * License ("GPL") version 2, as published by the Free Software Foundation.
 *
 * This file holds USB constants and structures defined
 * by the USB Device Class Definition for MIDI Devices.
 * Comments below reference relevant sections of that document:
 *
 * http://www.usb.org/developers/devclass_docs/midi10.pdf
 */

#ifndef __LINUX_USB_MIDI_H
#define __LINUX_USB_MIDI_H

#include <linux/types.h>

/* A.1  MS Class-Specific Interface Descriptor Subtypes */
#define USB_MS_HEADER		0x01
#define USB_MS_MIDI_IN_JACK	0x02
#define USB_MS_MIDI_OUT_JACK	0x03
#define USB_MS_ELEMENT		0x04

/* A.2  MS Class-Specific Endpoint Descriptor Subtypes */
#define USB_MS_GENERAL		0x01

/* A.3  MS MIDI IN and OUT Jack Types */
#define USB_MS_EMBEDDED		0x01
#define USB_MS_EXTERNAL		0x02

/* 6.1.2.1  Class-Specific MS Interface Header Descriptor */
struct usb_ms_header_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;
	__u8  bDescriptorSubtype;
	__le16 bcdMSC;
	__le16 wTotalLength;
} __attribute__ ((packed));

#define USB_DT_MS_HEADER_SIZE	7

/* 6.1.2.2  MIDI IN Jack Descriptor */
struct usb_midi_in_jack_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;		/* USB_DT_CS_INTERFACE */
	__u8  bDescriptorSubtype;	/* USB_MS_MIDI_IN_JACK */
	__u8  bJackType;		/* USB_MS_EMBEDDED/EXTERNAL */
	__u8  bJackID;
	__u8  iJack;
} __attribute__ ((packed));

#define USB_DT_MIDI_IN_SIZE	6

struct usb_midi_source_pin {
	__u8  baSourceID;
	__u8  baSourcePin;
} __attribute__ ((packed));

/* 6.1.2.3  MIDI OUT Jack Descriptor */
struct usb_midi_out_jack_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;		/* USB_DT_CS_INTERFACE */
	__u8  bDescriptorSubtype;	/* USB_MS_MIDI_OUT_JACK */
	__u8  bJackType;		/* USB_MS_EMBEDDED/EXTERNAL */
	__u8  bJackID;
	__u8  bNrInputPins;		/* p */
	struct usb_midi_source_pin pins[]; /* [p] */
	/*__u8  iJack;  -- omitted due to variable-sized pins[] */
} __attribute__ ((packed));

#define USB_DT_MIDI_OUT_SIZE(p)	(7 + 2 * (p))

/* As above, but more useful for defining your own descriptors: */
#define DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(p)			\
struct usb_midi_out_jack_descriptor_##p {			\
	__u8  bLength;						\
	__u8  bDescriptorType;					\
	__u8  bDescriptorSubtype;				\
	__u8  bJackType;					\
	__u8  bJackID;						\
	__u8  bNrInputPins;					\
	struct usb_midi_source_pin pins[p];			\
	__u8  iJack;						\
} __attribute__ ((packed))

/* 6.2.2  Class-Specific MS Bulk Data Endpoint Descriptor */
struct usb_ms_endpoint_descriptor {
	__u8  bLength;			/* 4+n */
	__u8  bDescriptorType;		/* USB_DT_CS_ENDPOINT */
	__u8  bDescriptorSubtype;	/* USB_MS_GENERAL */
	__u8  bNumEmbMIDIJack;		/* n */
	__u8  baAssocJackID[];		/* [n] */
} __attribute__ ((packed));

#define USB_DT_MS_ENDPOINT_SIZE(n)	(4 + (n))

/* As above, but more useful for defining your own descriptors: */
#define DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(n)			\
struct usb_ms_endpoint_descriptor_##n {				\
	__u8  bLength;						\
	__u8  bDescriptorType;					\
	__u8  bDescriptorSubtype;				\
	__u8  bNumEmbMIDIJack;					\
	__u8  baAssocJackID[n];					\
} __attribute__ ((packed))

#endif /* __LINUX_USB_MIDI_H */

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