This is the default error handling function. Note that replacements for * this function MUST NOT RETURN, or the program will likely crash. This *

Swaps red and blue bytes within a pixel */

If the bit depth < 8, it is expanded to 8. Also, if the already * expanded transparency value is supplied, an alpha channel is built. */

Expand grayscale files to RGB, with or without alpha */

Invert monochrome grayscale data */

Swaps pixel packing order within bytes */

OLD pre-1.0.9 interface: void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass, png_uint_32 transformations) */

Remove filler or alpha byte(s) */

Swaps byte order on 16 bit depth images */

Note: this does not correctly handle chunks that are > 64K under DOS */

Note: this does not properly handle chunks that are > 64K under DOS */

Note: this does not correctly handle chunks that are > 64K under DOS */

Turn on BGR-to-RGB mapping */

Turn on pixel packing */

Turn on packed pixel swapping */

Turn on 16 bit byte swapping */

This function allows the application to supply new output functions for * libpng if standard C streams aren't being used. * * This function takes a

Write an iTXt chunk */

Called by user to write a row of image data */

Write the tIME chunk. Use either png_convert_from_struct_tm() * or png_convert_from_time_t(), or fill in the structure yourself. */

Write a compressed text chunk */

Function to free memory for zlib */

=========================================================================== * Restore the heap property by moving down the tree starting at node k,

=========================================================================== * Scan a literal or distance tree to determine the frequencies of the cod

=========================================================================== * Send a literal or distance tree in compressed form, using the codes in

Test one file */