void MetadataReader::doBands(const std::string& key,
::nitf::ImageSubheader& header)
{
const int nbands = (int)header.getNumImageBands();
for (int i=0; i<nbands; i++)
{
::nitf::BandInfo bandinfo = header.getBandInfo(i);
std::string subkey = key + ".BAND:" + std::to_string(i);
doBand(subkey, bandinfo);
}
}
void MetadataReader::doImageSubheader(const std::string& key,
::nitf::ImageSubheader& subheader)
{
writeField(key, "IID1", subheader.getImageId());
writeField(key, "IDATIM", subheader.getImageDateAndTime());
writeField(key, "TGTID", subheader.getTargetId());
writeField(key, "IID2", subheader.getImageTitle());
writeField(key, "ISCLAS", subheader.getImageSecurityClass());
::nitf::FileSecurity security = subheader.getSecurityGroup();
doSecurity(key, "I", security);
writeField(key, "ENCRYP", subheader.getEncrypted());
writeField(key, "ISORCE", subheader.getImageSource());
writeField(key, "NROWS", subheader.getNumRows());
writeField(key, "NCOLS", subheader.getNumCols());
writeField(key, "PVTYPE", subheader.getPixelValueType());
writeField(key, "IREP", subheader.getImageRepresentation());
writeField(key, "ICAT", subheader.getImageCategory());
writeField(key, "ABPP", subheader.getActualBitsPerPixel());
writeField(key, "PJUST", subheader.getPixelJustification());
writeField(key, "ICORDS", subheader.getImageCoordinateSystem());
writeField(key, "IGEOLO", subheader.getCornerCoordinates());
writeField(key, "NICOM", subheader.getNumImageComments());
::nitf::List list = subheader.getImageComments();
doComments(key, list);
writeField(key, "IC", subheader.getImageCompression());
writeField(key, "COMRAT", subheader.getCompressionRate());
writeField(key, "NBANDS", subheader.getNumImageBands());
writeField(key, "XBANDS", subheader.getNumMultispectralImageBands());
doBands(key, subheader);
writeField(key, "ISYNC", subheader.getImageSyncCode());
writeField(key, "IMODE", subheader.getImageMode());
writeField(key, "NBPR", subheader.getNumBlocksPerRow());
writeField(key, "NBPC", subheader.getNumBlocksPerCol());
writeField(key, "NPPBH", subheader.getNumPixelsPerHorizBlock());
writeField(key, "NPPVB", subheader.getNumPixelsPerVertBlock());
writeField(key, "NBPP", subheader.getNumBitsPerPixel());
writeField(key, "IDLVL", subheader.getImageDisplayLevel());
writeField(key, "IALVL", subheader.getImageAttachmentLevel());
writeField(key, "ILOC", subheader.getImageLocation());
writeField(key, "IMAG", subheader.getImageMagnification());
}
void NITFReadControl::validateSegment(nitf::ImageSubheader subheader,
const NITFImageInfo* info)
{
const size_t numBandsSeg =
static_cast<nitf::Uint32>(subheader.getNumImageBands());
const std::string pjust = subheader.getPixelJustification().toString();
// TODO: More validation in here!
if (pjust != "R")
{
throw except::Exception(Ctxt("Expected right pixel justification"));
}
// The number of bytes per pixel, which we count to be 3 in the
// case of 24-bit true color and 8 in the case of complex float
// and 1 in the case of most SIDD data
const size_t numBitsPerPixel =
static_cast<nitf::Uint32>(subheader.getNumBitsPerPixel());
const size_t numBytesPerPixel = (numBitsPerPixel + 7) / 8;
const size_t numBytesSeg = numBytesPerPixel * numBandsSeg;
const size_t nbpp = info->getData()->getNumBytesPerPixel();
if (numBytesSeg != nbpp)
{
std::ostringstream ostr;
ostr << "Expected [" << nbpp << "] bytes per pixel, found ["
<< numBytesSeg << "]";
throw except::Exception(Ctxt(ostr.str()));
}
const size_t numCols = info->getData()->getNumCols();
const size_t numColsSubheader =
static_cast<nitf::Uint32>(subheader.getNumCols());
if (numColsSubheader != numCols)
{
std::ostringstream ostr;
ostr << "Invalid column width: was expecting [" << numCols
<< "], got [" << numColsSubheader << "]";
throw except::Exception(Ctxt(ostr.str()));
}
}