bool ID3Parser::ID3Header::IsValid(int aPos) const {
if (aPos >= SIZE) {
return true;
}
const uint8_t c = mRaw[aPos];
switch (aPos) {
case 0:
case 1:
case 2:
// Expecting "ID3".
return id3_header::ID[aPos] == c;
case 3:
return MajorVersion() >= id3_header::MIN_MAJOR_VER &&
MajorVersion() <= id3_header::MAX_MAJOR_VER;
case 4:
return MinorVersion() < 0xFF;
case 5:
// Validate flags for supported versions, see bug 949036.
return ((0xFF >> MajorVersion()) & c) == 0;
case 6:
case 7:
case 8:
case 9:
return c < 0x80;
}
return true;
}
QString VersionInfo::VersionString()
{
return QString("%1.%2.%3").arg(MajorVersion()).arg(MinorVersion()).arg(BuildVersion());
}
