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
  15 struct 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
  24 extern int line6_midibuf_bytes_used(struct midi_buffer *mb);
  25 extern int line6_midibuf_bytes_free(struct midi_buffer *mb);
  26 extern void line6_midibuf_destroy(struct midi_buffer *mb);
  27 extern int line6_midibuf_ignore(struct midi_buffer *mb, int length);
  28 extern int line6_midibuf_init(struct midi_buffer *mb, int size, int split);
  29 extern int line6_midibuf_read(struct midi_buffer *mb, unsigned char *data,
  30                               int length);
  31 extern void line6_midibuf_reset(struct midi_buffer *mb);
  32 extern int line6_midibuf_write(struct midi_buffer *mb, unsigned char *data,
  33                                int length);
  34
  35 #endif