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Added back in corrupt PRS1 waveform handling

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This commit is contained in:
Mark Watkins 2014-06-01 08:22:50 +10:00
parent 61502b2da9
commit a800aff28f
1 changed files with 46 additions and 7 deletions
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53
sleepyhead/SleepLib/loader_plugins/prs1_loader.cpp
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@ -1397,7 +1397,10 @@ void PRS1Import::run()
delete sg->session;
continue;
}
sg->ParseEvents();
if (!sg->ParseEvents()) {
// delete sg->session;
// continue;
}
sg->ParseWaveforms();
sg->session->SetChanged(true);
@ -1459,6 +1462,12 @@ bool PRS1FileGroup::ParseFile(QString path)
quint16 wvfm_signals;
unsigned char * header;
int cnt = 0;
int lastheadersize = 0;
int lastblocksize = 0;
int cruft = 0;
do {
QByteArray headerBA = f.read(16);
@ -1480,6 +1489,29 @@ bool PRS1FileGroup::ParseFile(QString path)
chunk->ext = header[6];
chunk->timestamp = (header[14] << 24) | (header[13] << 16) | (header[12] << 8) | header[11];
if (lastchunk != nullptr) {
if ((lastchunk->fileVersion != chunk->fileVersion)
&& (lastchunk->ext != chunk->ext)
&& (lastchunk->family != chunk->family)
&& (lastchunk->familyVersion != chunk->familyVersion)
&& (lastchunk->htype != chunk->htype)) {
QByteArray junk = f.read(lastblocksize - 16);
if (lastchunk->ext == 5) {
// The data is random crap
// lastchunk->m_data.append(junk.mid(lastheadersize-16));
}
delete chunk;
++cruft;
if (cruft > 3)
break;
continue;
// Corrupt header.. skip it.
}
}
int diff = 0;
//////////////////////////////////////////////////////////
@ -1523,21 +1555,26 @@ bool PRS1FileGroup::ParseFile(QString path)
}
}
int headersize = headerBA.size() - 1;
int headersize = headerBA.size();
lastblocksize = blocksize;
lastheadersize = headersize;
blocksize -= headersize;
// Check header checksum
quint8 csum = 0;
for (int i=0; i < headersize; ++i) csum += header[i];
if (csum != header[headersize]) {
for (int i=0; i < headersize-1; ++i) csum += header[i];
if (csum != header[headersize-1]) {
// header checksum error.
delete chunk;
return false;
}
// Read data block
chunk->m_data = f.read(blocksize - (headersize+1));
chunk->m_data = f.read(blocksize);
if (chunk->m_data.size() < (blocksize - (headersize+1))) {
if (chunk->m_data.size() < blocksize) {
delete chunk;
break;
}
@ -1564,6 +1601,7 @@ bool PRS1FileGroup::ParseFile(QString path)
lastchunk->m_data.append(chunk->m_data);
lastchunk->duration += chunk->duration;
delete chunk;
cnt++;
chunk = lastchunk;
continue;
}
@ -1596,6 +1634,7 @@ bool PRS1FileGroup::ParseFile(QString path)
}
lastchunk = chunk;
cnt++;
} while (!f.atEnd());
return true;
}