-; png_write_destroy_info
- png_write_destroy
- png_set_crc_action
- png_set_filter
- png_set_filter_heuristics
- png_set_compression_level
- png_set_compression_mem_level
- png_set_compression_strategy
- png_set_compression_window_bits
- png_set_compression_method
- png_init_io
- png_set_error_fn
- png_get_error_ptr
- png_set_write_fn
- png_set_read_fn
- png_set_write_status_fn
- png_set_read_status_fn
- png_get_io_ptr
- png_set_progressive_read_fn
- png_set_read_status_fn
- png_set_read_user_transform_fn
- png_set_write_status_fn
- png_set_write_user_transform_fn
- png_get_progressive_ptr
- png_process_data
- png_progressive_combine_row
- png_malloc
- png_free
- png_memcpy_check
- png_memset_check
-; png_debug_malloc
-; png_debug_free
-; png_far_to_near