Converts a single rgb color without alpha from one type to another, color bits truncated to their bitdepth. In case of single channel (gray or palette

returns negative value on error. This should be pure C compatible, so no fstat. */

write given buffer to the file, overwriting the file, it doesn't append to it.*/

Nestopia Helper Functions

out must be buffer big enough to contain uncompressed IDAT chunk data, and in must contain the full image. return value is error**/

background color chunk (bKGD)*/

international text chunk (iTXt)*/

significant bits chunk (sBIT)*/

text chunk (tEXt)*/

compressed text chunk (zTXt)*/

search the index in the array, that has the largest value smaller than or equal to the given value, given array must be sorted (if no value is smaller

wpos = pos & (windowsize - 1)*/

write the lz77-encoded data, which has lit, len and dist codes, to compressed stream using huffman trees. tree_ll: the tree for lit and len codes. tre

in: Adam7 interlaced image, with no padding bits between scanlines, but between reduced images so that each reduced image starts at a byte. out: the

in: non-interlaced image with size w*h out: the same pixels, but re-ordered according to PNG's Adam7 interlacing, with no padding bits between scanli

* Verifies if a switch to a fullscreen mode can be made or if the mode is already set to fullscreen. * * @param mode The video mode to set to f