chris/OSCAR-code
1
0
Fork 0
mirror of https://gitlab.com/pholy/OSCAR-code.git synced 2025-04-05 18:50:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

DreamStation waveform and event parsing.. still needs .001 summary parsing completed

Browse Source
This commit is contained in:
Mark Watkins 2016-01-20 22:32:26 +10:00
parent 50d4ee8697
commit 140b4d6bd0
1 changed files with 17 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sleepyhead/SleepLib/loader_plugins/prs1_loader.cpp
View File

@ -2321,7 +2321,9 @@ QList<PRS1DataChunk *> PRS1Loader::ParseFile(QString path)
wvfm_signals = header[0x12] | header[0x13] << 8;
int sbsize = wvfm_signals * 3 + 1;
int ws_size = (chunk->fileVersion == 3) ? 4 : 3;
int sbsize = wvfm_signals * ws_size + 1;
QByteArray sbextra = f.read(sbsize);
if (sbextra.size() != sbsize) {
delete chunk;
@ -2331,12 +2333,19 @@ QList<PRS1DataChunk *> PRS1Loader::ParseFile(QString path)
header = (unsigned char *)headerBA.data();
// Read the waveform information in reverse.
int pos = 0x14 + (wvfm_signals - 1) * 3;
int pos = 0x14 + (wvfm_signals - 1) * ws_size;
for (int i = 0; i < wvfm_signals; ++i) {
quint16 interleave = header[pos] | header[pos + 1] << 8;
quint8 sample_format = header[pos + 2];
chunk->waveformInfo.push_back(PRS1Waveform(interleave, sample_format));
pos -= 3;
if (chunk->fileVersion == 2) {
quint8 sample_format = header[pos + 2];
chunk->waveformInfo.push_back(PRS1Waveform(interleave, sample_format));
pos -= 3;
} else if (chunk->fileVersion == 3) {
quint16 sample_size = header[pos + 2] | header[pos + 3] << 8;
chunk->waveformInfo.push_back(PRS1Waveform(interleave, 0));
pos -= 4;
}
}
if (lastchunk != nullptr) {
diff = (chunk->timestamp - lastchunk->timestamp) - lastchunk->duration;
@ -2355,13 +2364,13 @@ QList<PRS1DataChunk *> PRS1Loader::ParseFile(QString path)
quint8 csum = 0;
for (int i=0; i < headersize-1; ++i) csum += header[i];
if (chunk->fileVersion==2) {
if ((chunk->fileVersion==2) || (chunk->ext >= 5)) {
if (csum != header[headersize-1]) {
// header checksum error.
delete chunk;
return CHUNKS;
}
} else if ((chunk->fileVersion==3) && (chunk->ext == 1)) {
} else if ((chunk->fileVersion==3) && (chunk->ext <= 2)) {
// DreamStation has an additional block of data following the timestamp, preceded by a length count,
// followed by the additive checksum
@ -2373,7 +2382,6 @@ QList<PRS1DataChunk *> PRS1Loader::ParseFile(QString path)
blocksize -= h2len;
// Read the extra data block
chunk->m_headerblock = f.read(h2len);
@ -2381,7 +2389,7 @@ QList<PRS1DataChunk *> PRS1Loader::ParseFile(QString path)
delete chunk;
return CHUNKS;
}
char * header2 = chunk->m_headerblock.data();
unsigned char * header2 = (unsigned char*)chunk->m_headerblock.data();
// Checksum the whole header
for (int i=0; i < h2len-1; ++i) csum += header2[i];