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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) 1995-2024 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.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "log.h"
#include "async_wait.h"
#include "beep.h"
#include "notes.h"
struct NoteDeviceStruct {
char mustHaveAtLeastOneField;
};
static NoteDevice *
beepConstruct (int errorLevel) {
NoteDevice *device;
if ((device = malloc(sizeof(*device)))) {
if (canBeep()) {
logMessage(LOG_DEBUG, "beeper enabled");
return device;
}
free(device);
} else {
logMallocError();
}
logMessage(LOG_DEBUG, "beeper not available");
return NULL;
}
static void
beepDestruct (NoteDevice *device) {
endBeep();
free(device);
logMessage(LOG_DEBUG, "beeper disabled");
}
static int
beepTone (NoteDevice *device, unsigned int duration, NoteFrequency frequency) {
uint32_t pitch = frequency;
logMessage(LOG_DEBUG, "tone: MSecs:%u Freq:%"PRIu32, duration, pitch);
if (!pitch) {
asyncWait(duration);
return 1;
}
return playBeep(pitch, duration);
}
static int
beepNote (NoteDevice *device, unsigned int duration, unsigned char note) {
return beepTone(device, duration, getNoteFrequency(note));
}
static int
beepFlush (NoteDevice *device) {
return 1;
}
const NoteMethods beepNoteMethods = {
.construct = beepConstruct,
.destruct = beepDestruct,
.tone = beepTone,
.note = beepNote,
.flush = beepFlush
};
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