void MrwImage::readMetadata()
{
#ifdef DEBUG
std::cerr << "Reading MRW file " << io_->path() << "\n";
#endif
if (io_->open() != 0) {
throw Error(9, io_->path(), strError());
}
IoCloser closer(*io_);
// Ensure that this is the correct image type
if (!isMrwType(*io_, false)) {
if (io_->error() || io_->eof()) throw Error(14);
throw Error(3, "MRW");
}
clearMetadata();
// Find the TTW block and read it into a buffer
uint32_t const len = 8;
byte tmp[len];
io_->read(tmp, len);
uint32_t pos = len;
uint32_t const end = getULong(tmp + 4, bigEndian);
pos += len;
if (pos > end) throw Error(14);
io_->read(tmp, len);
if (io_->error() || io_->eof()) throw Error(14);
while (memcmp(tmp + 1, "TTW", 3) != 0) {
uint32_t const siz = getULong(tmp + 4, bigEndian);
pos += siz;
if (pos > end) throw Error(14);
io_->seek(siz, BasicIo::cur);
if (io_->error() || io_->eof()) throw Error(14);
pos += len;
if (pos > end) throw Error(14);
io_->read(tmp, len);
if (io_->error() || io_->eof()) throw Error(14);
}
DataBuf buf(getULong(tmp + 4, bigEndian));
io_->read(buf.pData_, buf.size_);
if (io_->error() || io_->eof()) throw Error(14);
ByteOrder bo = TiffParser::decode(exifData_,
iptcData_,
xmpData_,
buf.pData_,
buf.size_);
setByteOrder(bo);
} // MrwImage::readMetadata
bool MrwImage::isThisType(BasicIo& iIo, bool advance) const
{
return isMrwType(iIo, advance);
}
