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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "lipiworker.h"
#include "virtualkeyboarddebug.h"
#include <QTime>
#include "LTKShapeRecognizer.h"
#include "LTKErrors.h"
namespace QtVirtualKeyboard {
/*!
\class QtVirtualKeyboard::LipiTask
\internal
*/
/*!
\class QtVirtualKeyboard::LipiLoadModelDataTask
\internal
*/
void LipiLoadModelDataTask::run()
{
VIRTUALKEYBOARD_DEBUG() << "LipiLoadModelDataTask::run()";
#ifdef QT_VIRTUALKEYBOARD_DEBUG
QTime perf;
perf.start();
#endif
int result = shapeRecognizer->loadModelData();
#ifdef QT_VIRTUALKEYBOARD_DEBUG
VIRTUALKEYBOARD_DEBUG() << "LipiLoadModelDataTask::run(): time:" << perf.elapsed() << "ms";
#endif
if (result != SUCCESS)
qWarning() << QString("Error %1: %2").arg(result).arg(getErrorMessage(result).c_str());
}
/*!
\class QtVirtualKeyboard::LipiRecognitionTask
\internal
*/
LipiRecognitionTask::LipiRecognitionTask(const LTKCaptureDevice& deviceInfo,
const LTKScreenContext& screenContext,
const vector<int>& inSubsetOfClasses,
float confThreshold,
int numChoices,
int resultId) :
LipiTask(),
deviceInfo(deviceInfo),
screenContext(screenContext),
inSubsetOfClasses(inSubsetOfClasses),
confThreshold(confThreshold),
numChoices(numChoices),
resultVector(new vector<LTKShapeRecoResult>()),
_resultId(resultId),
stateRunning(false),
stateCancelled(false)
{
}
void LipiRecognitionTask::run()
{
VIRTUALKEYBOARD_DEBUG() << "LipiRecognitionTask::run()";
if (!shapeRecognizer || !resultVector)
return;
{
QMutexLocker stateGuard(&stateLock);
stateRunning = true;
}
resultVector->clear();
resultVector->reserve(numChoices);
shapeRecognizer->setDeviceContext(deviceInfo);
#ifdef QT_VIRTUALKEYBOARD_DEBUG
QTime perf;
perf.start();
#endif
shapeRecognizer->recognize(traceGroup, screenContext,
inSubsetOfClasses, confThreshold,
numChoices, *resultVector);
#ifdef QT_VIRTUALKEYBOARD_DEBUG
int perfElapsed = perf.elapsed();
#endif
{
QMutexLocker stateGuard(&stateLock);
stateRunning = false;
if (stateCancelled)
resultVector->clear();
#ifdef QT_VIRTUALKEYBOARD_DEBUG
VIRTUALKEYBOARD_DEBUG() << "LipiRecognitionTask::run(): time:" << perfElapsed << "ms" << (stateCancelled ? "(cancelled)" : "");
#endif
}
}
bool LipiRecognitionTask::cancelRecognition()
{
QMutexLocker stateGuard(&stateLock);
stateCancelled = true;
bool result = (stateRunning && shapeRecognizer);
if (result)
shapeRecognizer->requestCancelRecognition();
return result;
}
int LipiRecognitionTask::resultId() const
{
return _resultId;
}
/*!
\class QtVirtualKeyboard::LipiRecognitionResultsTask
\internal
*/
LipiRecognitionResultsTask::LipiRecognitionResultsTask(QSharedPointer<vector<LTKShapeRecoResult> > resultVector,
const QMap<int, QChar> &unicodeMap,
int resultId) :
LipiTask(),
resultVector(resultVector),
unicodeMap(unicodeMap),
_resultId(resultId)
{
}
void LipiRecognitionResultsTask::run()
{
if (!resultVector || unicodeMap.isEmpty())
return;
QVariantList resultList;
for (vector<LTKShapeRecoResult>::const_iterator i = resultVector->begin();
i != resultVector->end(); i++) {
QVariantMap result;
int shapeId = i->getShapeId();
result["resultId"] = _resultId;
result["shapeId"] = shapeId;
result["unicode"] = unicodeMap.value(shapeId);
result["confidence"] = i->getConfidence();
resultList.append(result);
}
if (resultList.isEmpty())
return;
emit resultsAvailable(resultList);
}
/*!
\class QtVirtualKeyboard::LipiWorker
\internal
*/
LipiWorker::LipiWorker(LTKShapeRecognizer *shapeRecognizer, QObject *parent) :
QThread(parent),
taskSema(),
taskLock(),
shapeRecognizer(shapeRecognizer)
{
abort = false;
}
LipiWorker::~LipiWorker()
{
abort = true;
taskSema.release();
wait();
if (shapeRecognizer)
shapeRecognizer->unloadModelData();
}
void LipiWorker::addTask(QSharedPointer<LipiTask> task)
{
if (task) {
QMutexLocker guard(&taskLock);
taskList.append(task);
taskSema.release();
}
}
int LipiWorker::removeTask(QSharedPointer<LipiTask> task)
{
int count = 0;
if (task) {
QMutexLocker guard(&taskLock);
count = taskList.removeAll(task);
taskSema.acquire(qMin(count, taskSema.available()));
}
return count;
}
int LipiWorker::removeAllTasks()
{
QMutexLocker guard(&taskLock);
int count = taskList.count();
taskList.clear();
if (taskSema.available())
taskSema.acquire(taskSema.available());
return count;
}
void LipiWorker::run()
{
while (!abort) {
taskSema.acquire();
if (abort)
break;
QSharedPointer<LipiTask> currentTask;
{
QMutexLocker guard(&taskLock);
if (!taskList.isEmpty()) {
currentTask = taskList.front();
taskList.pop_front();
}
}
if (currentTask) {
currentTask->shapeRecognizer = shapeRecognizer;
currentTask->run();
}
}
}
} // namespace QtVirtualKeyboard
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