create the png data from post-deflated data

this function is designed to support animated gifs, although stb_image doesn't support it two back is the image from two frames ago, used for a very s

decode one 64-entry block--

get some unsigned bits

returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow

returns 1 if the product of two ints fits in a signed short, 0 on overflow.

set up the kernels

read 16bit value and convert to 24bit RGB

* Immediately apply mPalette to the surface palette */

* Immediately apply mPaletteNew to the surface palette */

! @brief exchanges the values Exchanges the contents of the JSON value with those of @a other. Does not invoke any move, copy

! @param[in] j JSON value to serialize @pre j.type() == value_t::object */

! @param[in] j JSON value to serialize */

! @param[in] j JSON value to serialize */

! @param[in] j JSON value to serialize @param[in] use_count whether to use '#' prefixes (optimized format) @par

* Execute one cycle of the current phase * * -1 = Phase Try Again * 0 = Phase Won * 1 = Phase Running */