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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2018 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#ifndef BRLTTY_INCLUDED_TUNE
#define BRLTTY_INCLUDED_TUNE
#include "tune_types.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
unsigned char note; /* standard MIDI values (0 means silence) */
/* 1 through 127 are semitones, 60 is middle C */
unsigned char duration; /* milliseconds (0 means stop) */
#define NOTE_PLAY(duration,note) {note, duration}
#define NOTE_REST(duration) NOTE_PLAY(duration, 0)
#define NOTE_STOP() NOTE_REST(0)
typedef struct {
NoteFrequency frequency; /* Herz (0 means silence) */
int duration; /* milliseconds (0 means stop) */
} ToneElement;
#define TONE_PLAY(duration,frequency) {frequency, duration}
#define TONE_REST(duration) TONE_PLAY(duration, 0)
#define TONE_STOP() TONE_REST(0)
extern void suppressTuneDeviceOpenErrors (void);
extern int tuneSetDevice (TuneDevice device);
extern void tunePlayNotes (const NoteElement *tune);
extern void tunePlayTones (const ToneElement *tune);
extern void tuneWait (int time);
extern void tuneSynchronize (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* BRLTTY_INCLUDED_TUNE */