LXR linux/sound/usb/line6/midibuf.h

   1/*
   2 * Line 6 Linux USB driver
   3 *
   4 * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
   5 *
   6 *      This program is free software; you can redistribute it and/or
   7 *      modify it under the terms of the GNU General Public License as
   8 *      published by the Free Software Foundation, version 2.
   9 *
  10 */
  11
  12#ifndef MIDIBUF_H
  13#define MIDIBUF_H
  14
  15struct midi_buffer {
  16        unsigned char *buf;
  17        int size;
  18        int split;
  19        int pos_read, pos_write;
  20        int full;
  21        int command_prev;
  22};
  23
  24extern int line6_midibuf_bytes_used(struct midi_buffer *mb);
  25extern int line6_midibuf_bytes_free(struct midi_buffer *mb);
  26extern void line6_midibuf_destroy(struct midi_buffer *mb);
  27extern int line6_midibuf_ignore(struct midi_buffer *mb, int length);
  28extern int line6_midibuf_init(struct midi_buffer *mb, int size, int split);
  29extern int line6_midibuf_read(struct midi_buffer *mb, unsigned char *data,
  30                              int length);
  31extern void line6_midibuf_reset(struct midi_buffer *mb);
  32extern int line6_midibuf_write(struct midi_buffer *mb, unsigned char *data,
  33                               int length);
  34
  35#endif
  36