1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Line 6 Linux USB driver
4  *
5  * Copyright (C) 2004-2010 Markus Grabner (line6@grabner-graz.at)
6  */
7 
8 #ifndef MIDIBUF_H
9 #define MIDIBUF_H
10 
11 #define LINE6_MIDIBUF_READ_TX 0
12 #define LINE6_MIDIBUF_READ_RX 1
13 
14 struct midi_buffer {
15 	unsigned char *buf;
16 	int size;
17 	int split;
18 	int pos_read, pos_write;
19 	int full;
20 	int command_prev;
21 };
22 
23 extern int line6_midibuf_bytes_used(struct midi_buffer *mb);
24 extern int line6_midibuf_bytes_free(struct midi_buffer *mb);
25 extern void line6_midibuf_destroy(struct midi_buffer *mb);
26 extern int line6_midibuf_ignore(struct midi_buffer *mb, int length);
27 extern int line6_midibuf_init(struct midi_buffer *mb, int size, int split);
28 extern int line6_midibuf_read(struct midi_buffer *mb, unsigned char *data,
29 			      int length, int read_type);
30 extern void line6_midibuf_reset(struct midi_buffer *mb);
31 extern int line6_midibuf_write(struct midi_buffer *mb, unsigned char *data,
32 			       int length);
33 
34 #endif
35