48 строки
1.1 KiB
C
48 строки
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Line 6 Linux USB driver
|
|
*
|
|
* Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
|
|
*/
|
|
|
|
#ifndef MIDI_H
|
|
#define MIDI_H
|
|
|
|
#include <sound/rawmidi.h>
|
|
|
|
#include "midibuf.h"
|
|
|
|
#define MIDI_BUFFER_SIZE 1024
|
|
|
|
struct snd_line6_midi {
|
|
/* Pointer back to the Line 6 driver data structure */
|
|
struct usb_line6 *line6;
|
|
|
|
/* MIDI substream for receiving (or NULL if not active) */
|
|
struct snd_rawmidi_substream *substream_receive;
|
|
|
|
/* MIDI substream for transmitting (or NULL if not active) */
|
|
struct snd_rawmidi_substream *substream_transmit;
|
|
|
|
/* Number of currently active MIDI send URBs */
|
|
int num_active_send_urbs;
|
|
|
|
/* Spin lock to protect MIDI buffer handling */
|
|
spinlock_t lock;
|
|
|
|
/* Wait queue for MIDI transmission */
|
|
wait_queue_head_t send_wait;
|
|
|
|
/* Buffer for incoming MIDI stream */
|
|
struct midi_buffer midibuf_in;
|
|
|
|
/* Buffer for outgoing MIDI stream */
|
|
struct midi_buffer midibuf_out;
|
|
};
|
|
|
|
extern int line6_init_midi(struct usb_line6 *line6);
|
|
extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data,
|
|
int length);
|
|
|
|
#endif
|