read a PNG, the result will be in the same color type as the PNG (hence "generic")*/

Deflate for a block of type "dynamic", that is, with freely, optimally, created huffman trees*/

log2 approximation. A slight bit faster than std::log. */

read the current gain of name gainName (must exit in getGains(), else return 0) in the device.

palette must have 4 * palettesize bytes allocated, and given in format RGBARGBARGBARGBA... returns 0 if the palette is opaque, returns 1 if the palett

get the tree of a deflated block with dynamic tree, the tree itself is also Huffman compressed with a known tree*/

get the tree of a deflated block with fixed tree, as specified in the deflate specification*/

Returns how many bits needed to represent given value (max 8 bit)*/

inflate a block with dynamic of fixed Huffman tree*/

Automatically chooses color type that gives smallest amount of bits in the output image, e.g. grey if there are only greyscale pixels, palette if ther