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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) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "log.h"
#include "api_control.h"
#include "brltty.h"
#ifndef ENABLE_API
void
api_identify (int full) {
}
const char *const api_parameters[] = {NULL};
int
api_start (BrailleDisplay *brl, char **parameters) {
return 0;
}
void
api_stop (BrailleDisplay *brl) {
}
void
api_link (BrailleDisplay *brl) {
}
void
api_unlink (BrailleDisplay *brl) {
}
void
api_suspend (BrailleDisplay *brl) {
}
int
api_resume (BrailleDisplay *brl) {
return 0;
}
int
api_claimDriver (BrailleDisplay *brl) {
return 0;
}
void
api_releaseDriver (BrailleDisplay *brl) {
}
int
api_handleCommand (int command) {
return 0;
}
int
api_handleKeyEvent (KeyGroup group, KeyNumber number, int press) {
return 0;
}
int
api_flush (BrailleDisplay *brl) {
return 0;
}
#endif /* ENABLE_API */
int apiStarted;
static int driverClaimed;
int
apiStart (char **parameters) {
if (api_start(&brl, parameters)) {
apiStarted = 1;
return 1;
}
return 0;
}
void
apiStop (void) {
api_stop(&brl);
apiStarted = 0;
}
void
apiLink (void) {
if (apiStarted) api_link(&brl);
}
void
apiUnlink (void) {
if (apiStarted) api_unlink(&brl);
}
void
apiSuspend (void) {
#ifdef ENABLE_API
if (apiStarted) {
api_suspend(&brl);
} else
#endif /* ENABLE_API */
{
destructBrailleDriver();
}
}
int
apiResume (void) {
#ifdef ENABLE_API
if (apiStarted) return api_resume(&brl);
#endif /* ENABLE_API */
return constructBrailleDriver();
}
int
apiClaimDriver (void) {
if (!driverClaimed && apiStarted) {
if (!api_claimDriver(&brl)) return 0;
driverClaimed = 1;
}
return 1;
}
void
apiReleaseDriver (void) {
if (driverClaimed) {
api_releaseDriver(&brl);
driverClaimed = 0;
}
}
int
apiFlush (void) {
if (!apiStarted) return 1;
return api_flush(&brl);
}
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