resize and give all new elements the value*/

compress using the default or custom zlib function */

Outputs various dimensions and positions in the image related to the Adam7 reduced images. passw: output containing the width of the 7 passes passh: o

Returns the length up to which could be stored in the cache. */

read the information from the header and store it in the LodePNGInfo. return value is error*/

Higher level helper functions.

Adds a deflate block with the given LZ77 data to the output. options: global program options btype: the block type, must be 1 or 2 final: whether to s

Calculates the entropy of the statistics */

Encodes the Huffman tree and returns how many bits its encoding takes. If out is a null pointer, only returns the size and runs faster. */

Return true if there was an error parsing the document.

Finds a free location in the memory pool. Performs garbage collection if needed. lists: If given, used to mark in-use nodes during garbage collection.

Create the Huffman tree given the symbol frequencies*/

Update the sliding hash value with the given byte. All calls to this function must be made on consecutive input characters. Since the hash value exist