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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Line 6 Linux USB driver4 *5 * Copyright (C) 2004-2010 Markus Grabner (line6@grabner-graz.at)6 */7 8#ifndef MIDI_H9#define MIDI_H10 11#include <sound/rawmidi.h>12 13#include "midibuf.h"14 15#define MIDI_BUFFER_SIZE 102416 17struct snd_line6_midi {18 /* Pointer back to the Line 6 driver data structure */19 struct usb_line6 *line6;20 21 /* MIDI substream for receiving (or NULL if not active) */22 struct snd_rawmidi_substream *substream_receive;23 24 /* MIDI substream for transmitting (or NULL if not active) */25 struct snd_rawmidi_substream *substream_transmit;26 27 /* Number of currently active MIDI send URBs */28 int num_active_send_urbs;29 30 /* Spin lock to protect MIDI buffer handling */31 spinlock_t lock;32 33 /* Wait queue for MIDI transmission */34 wait_queue_head_t send_wait;35 36 /* Buffer for incoming MIDI stream */37 struct midi_buffer midibuf_in;38 39 /* Buffer for outgoing MIDI stream */40 struct midi_buffer midibuf_out;41};42 43extern int line6_init_midi(struct usb_line6 *line6);44extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data,45 int length);46 47#endif48