chris/OSCAR-code
1
0
Fork 0
mirror of https://gitlab.com/pholy/OSCAR-code.git synced 2025-04-08 04:00:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

A little PRS1 Corrupt Waveform Data Recovery

Browse Source
This commit is contained in:
Mark Watkins 2011-07-16 23:34:39 +10:00
parent 4766da616f
commit afb239abce
2 changed files with 37 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
SleepLib/loader_plugins/prs1_loader.cpp
View File

@ -898,15 +898,19 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
static qint16 interleave[max_signals]={0}; static qint16 interleave[max_signals]={0};
static char sampletype[max_signals]={0}; static char sampletype[max_signals]={0};
int hl; int hl=0;
long samples=0; long samples=0;
qint64 duration=0; qint64 duration=0;
char * buffer=(char *)m_buffer; char * buffer=(char *)m_buffer;
bool first2=true; bool first2=true;
long fpos=0;
int bsize=0;
int lasthl=0;
while (true) { while (true) {
lasthl=hl;
hl=20; hl=20;
br=f.read((char *)header,hl); br=f.read((char *)header,hl);
fpos+=hl;
if (br<hl) { if (br<hl) {
if (cnt==0) if (cnt==0)
return false; return false;
@ -916,11 +920,33 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
if (header[0]!=PRS1_MAGIC_NUMBER) { if (header[0]!=PRS1_MAGIC_NUMBER) {
if (cnt==0) if (cnt==0)
return false; return false;
qDebug() << "Corrupt waveform, trying to recover";
// read the damn bytes anyway..
br=f.read((char *)header,lasthl-hl+1); // last bit of the header
if (br<lasthl-hl+1) {
qDebug() << "End of file, couldn't recover";
break; break;
} }
hl=lasthl;
br=f.read((char *)&buffer[samples],size);
if (br<size) {
//delete [] buffer;
break;
}
samples+=size;
duration+=seconds;
br=f.read((char *)header,2);
fpos+=size+3+lasthl-hl;
//f.seek(fpos-hl+bsize);
//fpos+=bsize-hl;
continue;
}
//sequence=size=timestamp=seconds=ext=0; //sequence=size=timestamp=seconds=ext=0;
size=(header[2] << 8) | header[1]; bsize=size=(header[2] << 8) | header[1];
version=header[4]; version=header[4];
htype=header[3]; htype=header[3];
ext=header[6]; ext=header[6];
@ -936,6 +962,7 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
char buf[3]; char buf[3];
for (int i=0;i<numsignals;i++) { for (int i=0;i<numsignals;i++) {
f.read(buf,3); f.read(buf,3);
fpos+=3;
if (br<3) { if (br<3) {
if (cnt==0) if (cnt==0)
return false; return false;
@ -952,6 +979,7 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
return false; return false;
break; break;
} }
fpos+=1;
if (sum!=hchk) if (sum!=hchk)
return false; return false;
@ -980,6 +1008,7 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
delete [] buffer; delete [] buffer;
break; break;
} }
fpos+=size;
cnt++; cnt++;
@ -989,6 +1018,7 @@ bool PRS1Loader::OpenWaveforms(Session *session,QString filename)
char chkbuf[2]; char chkbuf[2];
qint16 chksum; qint16 chksum;
br=f.read(chkbuf,2); br=f.read(chkbuf,2);
fpos+=2;
if (br<2) if (br<2)
return false; return false;
chksum=chkbuf[0] << 8 | chkbuf[1]; chksum=chkbuf[0] << 8 | chkbuf[1];

3
mainwindow.cpp
View File

@ -25,7 +25,10 @@ MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent), QMainWindow(parent),
ui(new Ui::MainWindow) ui(new Ui::MainWindow)
{ {
#ifndef Q_WS_MAC
this->showMaximized(); this->showMaximized();
#endif
ui->setupUi(this); ui->setupUi(this);
this->setWindowTitle(tr("SleepyHead")+QString(" v0.8.")+subversion); this->setWindowTitle(tr("SleepyHead")+QString(" v0.8.")+subversion);