drivers/staging/line6/midibuf.h

   1 /*
   2  * Line6 Linux USB driver - 0.8.0
   3  *
   4  * Copyright (C) 2004-2009 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
  16 struct MidiBuffer {
  17         unsigned char *buf;
  18         int size;
  19         int split;
  20         int pos_read, pos_write;
  21         int full;
  22         int command_prev;
  23 };
  24
  25
  26 extern int midibuf_bytes_used(struct MidiBuffer *mb);
  27 extern int midibuf_bytes_free(struct MidiBuffer *mb);
  28 extern void midibuf_destroy(struct MidiBuffer *mb);
  29 extern int midibuf_ignore(struct MidiBuffer *mb, int length);
  30 extern int midibuf_init(struct MidiBuffer *mb, int size, int split);
  31 extern int midibuf_read(struct MidiBuffer *mb, unsigned char *data, int length);
  32 extern void midibuf_reset(struct MidiBuffer *mb);
  33 extern int midibuf_skip_message(struct MidiBuffer *mb, unsigned short mask);
  34 extern void midibuf_status(struct MidiBuffer *mb);
  35 extern int midibuf_write(struct MidiBuffer *mb, unsigned char *data,
  36                          int length);
  37
  38
  39 #endif