/**
* The bitmasks field only occurs if the DIB Header is BITMAPINFOHEADER field and the compression
* type is set to BI_BITFIELD
*
* @return a ComplexField containing the bitmask if it exists, null otherwise
*/
private ComplexField<BitfieldMask> buildOptionalBitmasks() {
if (DIBHeader.getValue().Size.getValueAsEnum() == DIBHeaderSize.BITMAPINFOHEADER) {
BitmapInfoHeader bitmapInfoHeader = (BitmapInfoHeader) DIBHeader.getValue();
if (bitmapInfoHeader.Compression.getValueAsEnum() == CompressionType.BI_BITFIELD) {
return new ComplexField<BitfieldMask>("Bitfield Masks", BitfieldMask.class);
}
}
return null; // no bitmap exists
}
/**
* The Color Palette field only exists if the DIB Header contains a ClrUsed field
* (BITMAPINFOHEADER through BITMAPV5HEADER) and the ClrUsed field is non-0
*
* @return a ComplexArrayField containing the Color Palette array if it exists, null otherwise
*/
private ComplexArrayField<RGBQuad> buildColorPaletteArray() {
if (DIBHeader.getValue()
instanceof BitmapInfoHeader) // if the header is at LEAST a BitmapInfoHeader
{
BitmapInfoHeader bitmapInfoHeader = (BitmapInfoHeader) DIBHeader.getValue();
int NumberOfElements = bitmapInfoHeader.ClrUsed.getValueAsInt();
return new ComplexArrayField<BmpHeaderMap.RGBQuad>(
"Color Palette", RGBQuad.class, NumberOfElements);
}
return null; // no color palette exists
}
/** {@inheritDoc} */
public ComplexField getField() {
return ComplexField.getInstance();
}
