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

Compress whatever is at avail_in and next_in and write to the output file. Return -1 if there is an error writing to the output file, otherwise 0.

Build a set of tables to decode the provided canonical Huffman code. The code lengths are lens[0..codes-1]. The result starts at *table, whose

Free memory allocated by a png_create_struct() call */

Free all memory used by the read */

Free memory allocated by a png_create_struct() call */

Finish a chunk started with png_write_chunk_start(). */

Write the start of a PNG chunk. The type is the chunk type. * The total_length is the sum of the lengths of all the data you will be * passing in p

Internal use only. Called when finished processing a row of data. */

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

Calculate the CRC over a section of data. We can only pass as * much data to this routine as the largest single buffer size. We * also check that

Allocate memory. For reasonable files, size should never exceed * 64K. However, zlib may allocate more then 64K if you don't tell * it not to. Se

Allocate the memory for an info_struct for the application. We don't * really need the png_ptr, but it could potentially be useful in the * future.

Reads a unsigned int word from a file in little endian format */

Writes a unsigned int to a file in little endian format */

Save the names of all files in a folder into string vector file_list Only save the names containing search_string

Temporary (for backwards compatibility)

========================================================================= * Flush as much pending output as possible. All deflate() output goes * th

Compress len zeros to output. Return -1 on error, 0 on success. */

Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification, * and if invalid, correct the keyword rather than discarding the entire * ch

Free all memory used by the write */