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Code Issues Releases Activity

GCS:Logging: Correctly adhere to replay speed, and check logfile for plausibility/corruption

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This commit is contained in:
Corvus Corax 2011-11-25 15:11:58 +01:00
parent 856f8a9b6c
commit 6913d14e82
2 changed files with 26 additions and 6 deletions
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28
ground/openpilotgcs/src/plugins/logging/logfile.cpp
View File

@ -88,9 +88,12 @@ void LogFile::timerFired()
if(file.bytesAvailable() > 4)
{
// TODO: going back in time will be a problem
while ((myTime.elapsed() - timeOffset) * playbackSpeed > lastTimeStamp) {
int time;
time = myTime.elapsed();
// TODO: going back in time will be a problem
while ((lastPlayed + ((time - timeOffset)* playbackSpeed) > lastTimeStamp)) {
lastPlayed += ((time - timeOffset)* playbackSpeed);
if(file.bytesAvailable() < 4) {
stopReplay();
return;
@ -98,6 +101,11 @@ void LogFile::timerFired()
file.read((char *) &dataSize, sizeof(dataSize));
if (dataSize<1 || dataSize>(1024*1024)) {
qDebug() << "Error: Logfile corrupted! Unlikely packet size: " << dataSize << "\n";
stopReplay();
return;
}
if(file.bytesAvailable() < dataSize) {
stopReplay();
return;
@ -113,7 +121,19 @@ void LogFile::timerFired()
return;
}
int save=lastTimeStamp;
file.read((char *) &lastTimeStamp,sizeof(lastTimeStamp));
// some validity checks
if (lastTimeStamp<save // logfile goies back in time
|| (lastTimeStamp-save) > (60*60*1000)) { // gap of more than 60 minutes)
qDebug() << "Error: Logfile corrupted! Unlikely timestamp " << lastTimeStamp << " after "<< save << "\n";
stopReplay();
return;
}
timeOffset = time;
time = myTime.elapsed();
}
} else {
stopReplay();
@ -125,6 +145,7 @@ bool LogFile::startReplay() {
dataBuffer.clear();
myTime.restart();
timeOffset = 0;
lastPlayed = 0;
playbackSpeed = 1;
file.read((char *) &lastTimeStamp,sizeof(lastTimeStamp));
timer.setInterval(10);
@ -142,12 +163,11 @@ bool LogFile::stopReplay() {
void LogFile::pauseReplay()
{
timer.stop();
pausedTime = myTime.elapsed();
}
void LogFile::resumeReplay()
{
timeOffset += myTime.elapsed() - pausedTime;
timeOffset = myTime.elapsed();
timer.start();
}

4
ground/openpilotgcs/src/plugins/logging/logfile.h
View File

@ -27,7 +27,7 @@ public:
bool stopReplay();
public slots:
void setReplaySpeed(double val) { playbackSpeed = pow(10,(val)/100); qDebug() << playbackSpeed; };
void setReplaySpeed(double val) { playbackSpeed = val; qDebug() << playbackSpeed; };
void pauseReplay();
void resumeReplay();
@ -45,11 +45,11 @@ protected:
QTime myTime;
QFile file;
qint32 lastTimeStamp;
qint32 lastPlayed;
QMutex mutex;
int timeOffset;
int pausedTime;
double playbackSpeed;
};