Second step for the ...makeFromLengths and ...makeFromFrequencies functions. numcodes, lengths and maxbitlen must already be filled in correctly. retu

index: bitgroup index, bits: bitgroup size(1, 2 or 4), in: bitgroup value, out: octet array to add bits to*/

Return the adler32 of the bytes data[0..len-1]*/

color is not allowed to already exist. Index should be >= 0 (it's signed to be compatible with using -1 for "doesn't exist")*/

returns -1 if color not present, its index otherwise*/

compute CRC32 using the fastest algorithm for large datasets on modern CPUs

LZ77-encode the data. Return value is error code. The input are raw bytes, the output is in the form of unsigned integers with codes representing for

! * \return non-zero if the function succeeded */

! * \return non-zero if the function succeeded */

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

get the literal and length code tree of a deflated block with fixed tree, as per the deflate specification*/

Similar to getPixelColorRGBA8, but with all the for loops inside of the color mode test cases, optimized to convert the colors much faster, when conve

load file into buffer that already has the correct allocated size. Returns error code.*/

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.*/

Paeth predicter, used by PNG filter type 4 The parameters are of type short, but should come from unsigned chars, the shorts are only needed to make t

Parse a CIFF file, better known as Canon CRW format. */

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