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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 <string.h>
#include "log.h"
#include "io_generic.h"
#include "gio_internal.h"
#include "io_bluetooth.h"
struct GioHandleStruct {
BluetoothConnection *connection;
};
static int
disconnectBluetoothResource (GioHandle *handle) {
bthCloseConnection(handle->connection);
free(handle);
return 1;
}
static char *
getBluetoothResourceName (GioHandle *handle, int timeout) {
return bthGetNameOfDevice(handle->connection, timeout);
}
static ssize_t
writeBluetoothData (GioHandle *handle, const void *data, size_t size, int timeout) {
return bthWriteData(handle->connection, data, size);
}
static int
awaitBluetoothInput (GioHandle *handle, int timeout) {
return bthAwaitInput(handle->connection, timeout);
}
static ssize_t
readBluetoothData (
GioHandle *handle, void *buffer, size_t size,
int initialTimeout, int subsequentTimeout
) {
return bthReadData(handle->connection, buffer, size,
initialTimeout, subsequentTimeout);
}
static int
monitorBluetoothInput (GioHandle *handle, AsyncMonitorCallback *callback, void *data) {
return bthMonitorInput(handle->connection, callback, data);
}
static void *
getBluetoothResourceObject (GioHandle *handle) {
return handle->connection;
}
static const GioMethods gioBluetoothMethods = {
.disconnectResource = disconnectBluetoothResource,
.getResourceName = getBluetoothResourceName,
.writeData = writeBluetoothData,
.awaitInput = awaitBluetoothInput,
.readData = readBluetoothData,
.monitorInput = monitorBluetoothInput,
.getResourceObject = getBluetoothResourceObject
};
static int
isBluetoothSupported (const GioDescriptor *descriptor) {
return descriptor->bluetooth.channelNumber || descriptor->bluetooth.discoverChannel;
}
static int
testBluetoothIdentifier (const char **identifier) {
return isBluetoothDevice(identifier);
}
static const GioOptions *
getBluetoothOptions (const GioDescriptor *descriptor) {
return &descriptor->bluetooth.options;
}
static const GioMethods *
getBluetoothMethods (void) {
return &gioBluetoothMethods;
}
static GioHandle *
connectBluetoothResource (
const char *identifier,
const GioDescriptor *descriptor
) {
GioHandle *handle = malloc(sizeof(*handle));
if (handle) {
BluetoothConnectionRequest request;
bthInitializeConnectionRequest(&request);
request.identifier = identifier;
request.channel = descriptor->bluetooth.channelNumber;
request.discover = descriptor->bluetooth.discoverChannel;
memset(handle, 0, sizeof(*handle));
if ((handle->connection = bthOpenConnection(&request))) {
return handle;
}
free(handle);
} else {
logMallocError();
}
return NULL;
}
const GioClass gioBluetoothClass = {
.isSupported = isBluetoothSupported,
.testIdentifier = testBluetoothIdentifier,
.getOptions = getBluetoothOptions,
.getMethods = getBluetoothMethods,
.connectResource = connectBluetoothResource,
.resourceType = GIO_RESOURCE_BLUETOOTH
};
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