The neighbor counter-clockwise to given point

========================================================================= */

Initialize state for writing a gzip file. Mark initialization by setting state->size to non-zero. Return -1 on failure or 0 on success. */

Open a gzip file either by name or file descriptor. */

* Picks maximum of neighboring pixels (blur + lighten) */

* Picks minimum of neighboring pixels (blur + darken) */

internally MSE is a sum of all channels with pixels 0..1 range, but other software gives per-RGB-channel MSE for 0..255 range */

* Tests whether a character is in the alphabetic [A-Za-z] range. */

* Adjusts an iteration option. */

* Sets the precision of an 8-bit sample to a lower value, * then scales the result back to 8 bits. */

* Adjusts the error message if err_info->id is one of the common erroneous * id values. */

* Allocates memory using malloc. */

* Finds the first element in a bitset. */

* Creates a path name by changing the extension component of a given * path name. */

Error message generation */

Read the data from whatever input you are using. The default routine * reads from a file pointer. Note that this routine sometimes gets called * w

Read the information before the actual image data. This has been * changed in v0.90 to allow reading a file that already has the magic * bytes read

Optional call to update the users info_ptr structure */

Reset the CRC variable to 32 bits of 1's. Care must be taken * in case CRC is > 32 bits to leave the top bits 0. */

Turn on BGR-to-RGB mapping */

Add a filler byte on read, or remove a filler or alpha byte on write. * The filler type has changed in v0.95 to allow future 2-byte fillers * for 48

Turn on 16 bit byte swapping */

Checks whether the supplied bytes match the PNG signature. We allow * checking less than the full 8-byte signature so that those apps that * alread

This is the API that calls the internal function above. */

Writes the end of the PNG file. If you don't want to write comments or * time information, you can pass NULL for info. If you already wrote these

* Reads (scans) an unsigned integer from a file stream. * Returns 1 on success, 0 on matching failure, or EOF on input failure. **/

!*************************************************************************** @return Size of array @brief Gives current size of array/number o

Create the Huffman tree given the symbol frequencies*/

The neighbor clockwise to given point

=========================================================================== * Construct one Huffman tree and assigns the code bit strings and lengths

return type is a LodePNG error code*/

=========================================================================== * Check that the match at match_start is indeed a match. */