-void png_correct_palette (png_structp png_ptr, png_colorp
-palette, int num_palette);
-
-int png_crc_error (png_structp png_ptr);
-
-int png_crc_finish (png_structp png_ptr, png_uint_32 skip);
-
-void png_crc_read (png_structp png_ptr, png_bytep buf,
-png_size_t length);
-
-png_voidp png_create_struct (int type, png_malloc_ptr malloc_fn);
-
-png_voidp png_create_struct_2 (int type);
-
-void png_destroy_struct (png_voidp struct_ptr);
-
-void png_destroy_struct_2 (png_voidp struct_ptr, png_free_ptr
-free_fn);
-
-void png_do_background (png_row_infop row_info, png_bytep row,
-png_color_16p trans_values, png_color_16p background,
-png_color_16p background_1, png_bytep gamma_table, png_bytep
-gamma_from_1, png_bytep gamma_to_1, png_uint_16pp gamma_16,
-png_uint_16pp gamma_16_from_1, png_uint_16pp gamma_16_to_1, int
-gamma_shift);
-
-void png_do_bgr (png_row_infop row_info, png_bytep row);
-
-void png_do_chop (png_row_infop row_info, png_bytep row);
-
-void png_do_dither (png_row_infop row_info, png_bytep row,
-png_bytep palette_lookup, png_bytep dither_lookup);
-
-void png_do_expand (png_row_infop row_info, png_bytep row,
-png_color_16p trans_value);
-
-void png_do_expand_palette (png_row_infop row_info, png_bytep
-row, png_colorp palette, png_bytep trans, int num_trans);
-
-void png_do_gamma (png_row_infop row_info, png_bytep row,
-png_bytep gamma_table, png_uint_16pp gamma_16_table, int
-gamma_shift);
-
-void png_do_gray_to_rgb (png_row_infop row_info, png_bytep
-row);
-
-void png_do_invert (png_row_infop row_info, png_bytep row);
-
-void png_do_pack (png_row_infop row_info, png_bytep row,
-png_uint_32 bit_depth);
-
-void png_do_packswap (png_row_infop row_info, png_bytep row);
-
-void png_do_read_filler (png_row_infop row_info, png_bytep row,
-png_uint_32 filler, png_uint_32 flags);
-
-void png_do_read_interlace (png_row_infop row_info, png_bytep
-row, int pass, png_uint_32 transformations);
-
-void png_do_read_invert_alpha (png_row_infop row_info,
-png_bytep row);
-
-void png_do_read_swap_alpha (png_row_infop row_info, png_bytep
-row);
-
-void png_do_read_transformations (png_structp png_ptr);
-
-int png_do_rgb_to_gray (png_row_infop row_info, png_bytep
-row);
-
-void png_do_shift (png_row_infop row_info, png_bytep row,
-png_color_8p bit_depth);
-
-void png_do_strip_filler (png_row_infop row_info, png_bytep
-row, png_uint_32 flags);
-
-void png_do_swap (png_row_infop row_info, png_bytep row);
-
-void png_do_unpack (png_row_infop row_info, png_bytep row);
-
-void png_do_unshift (png_row_infop row_info, png_bytep row,
-png_color_8p sig_bits);
-
-void png_do_write_interlace (png_row_infop row_info, png_bytep
-row, int pass);
-
-void png_do_write_invert_alpha (png_row_infop row_info,
-png_bytep row);
-
-void png_do_write_swap_alpha (png_row_infop row_info, png_bytep
-row);
-
-void png_do_write_transformations (png_structp png_ptr);
-
-void *png_far_to_near (png_structp png_ptr,png_voidp ptr,
-int check);
-
-void png_flush (png_structp png_ptr);
-
-png_int_32 png_get_int_32 (png_bytep buf);
-
-png_uint_16 png_get_uint_16 (png_bytep buf);
-
-png_uint_32 png_get_uint_32 (png_bytep buf);
-
-void png_handle_bKGD (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_cHRM (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_gAMA (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_hIST (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_IEND (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_IHDR (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_oFFs (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_pCAL (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_pHYs (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_PLTE (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_sBIT (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_sRGB (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_tEXt (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_tIME (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_tRNS (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_handle_unknown (png_structp png_ptr, png_infop
-info_ptr, png_uint_32 length);
-
-void png_handle_zTXt (png_structp png_ptr, png_infop info_ptr,
-png_uint_32 length);
-
-void png_info_destroy (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_init_read_transformations (png_structp png_ptr);
-
-void png_process_IDAT_data (png_structp png_ptr, png_bytep
-buffer, png_size_t buffer_length);
-
-void png_process_some_data (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_check_crc (png_structp png_ptr);
-
-void png_push_crc_finish (png_structp png_ptr);
-
-void png_push_crc_skip (png_structp png_ptr, png_uint_32
-length);
-
-void png_push_fill_buffer (png_structp png_ptr, png_bytep
-buffer, png_size_t length);
-
-void png_push_handle_tEXt (png_structp png_ptr, png_infop
-info_ptr, png_uint_32 length);
-
-void png_push_handle_unknown (png_structp png_ptr, png_infop
-info_ptr, png_uint_32 length);
-
-void png_push_handle_zTXt (png_structp png_ptr, png_infop
-info_ptr, png_uint_32 length);
-
-void png_push_have_end (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_have_info (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_have_row (png_structp png_ptr, png_bytep row);
-
-void png_push_process_row (png_structp png_ptr);
-
-void png_push_read_chunk (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_read_end (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_read_IDAT (png_structp png_ptr);
-
-void png_push_read_sig (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_read_tEXt (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_read_zTXt (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_push_restore_buffer (png_structp png_ptr, png_bytep
-buffer, png_size_t buffer_length);
-
-void png_push_save_buffer (png_structp png_ptr);
-
-void png_read_data (png_structp png_ptr, png_bytep data,
-png_size_t length);
-
-void png_read_filter_row (png_structp png_ptr, png_row_infop
-row_info, png_bytep row, png_bytep prev_row, int filter);
-
-void png_read_finish_row (png_structp png_ptr);
-
-void png_read_init (png_structp png_ptr);
-
-void png_read_push_finish_row (png_structp png_ptr);
-
-void png_read_start_row (png_structp png_ptr);
-
-void png_read_transform_info (png_structp png_ptr, png_infop
-info_ptr);
-
-void png_reset_crc (png_structp png_ptr);
-
-void png_save_int_32 (png_bytep buf, png_int_32 i);
-
-void png_save_uint_16 (png_bytep buf, unsigned int i);
-
-void png_save_uint_32 (png_bytep buf, png_uint_32 i);
-
-void png_write_bKGD (png_structp png_ptr, png_color_16p values,
-int color_type);
-
-void png_write_cHRM (png_structp png_ptr, double white_x,
-double white_y, double red_x, double red_y, double green_x,
-double green_y, double blue_x, double blue_y);
-
-void png_write_data (png_structp png_ptr, png_bytep data,
-png_size_t length);
-void png_write_filtered_row (png_structp png_ptr, png_bytep
-filtered_row);
-
-void png_write_find_filter (png_structp png_ptr, png_row_infop
-row_info);
-
-void png_write_finish_row (png_structp png_ptr);
-
-void png_write_gAMA (png_structp png_ptr, double file_gamma);
-
-void png_write_hIST (png_structp png_ptr, png_uint_16p hist,
-int num_hist);
-
-void png_write_init (png_structp png_ptr);
-
-void png_write_IDAT (png_structp png_ptr, png_bytep data,
-png_size_t length);
-
-void png_write_IEND (png_structp png_ptr);
-
-void png_write_IHDR (png_structp png_ptr, png_uint_32 width,
-png_uint_32 height, int bit_depth, int color_type, int
-compression_type, int filter_type, int interlace_type);
-
-void png_write_oFFs (png_structp png_ptr, png_uint_32 x_offset,
-png_uint_32 y_offset, int unit_type);
-
-void png_write_pCAL (png_structp png_ptr, png_charp purpose,
-png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp
-units, png_charpp params);
-
-void png_write_pHYs (png_structp png_ptr, png_uint_32
-x_pixels_per_unit, png_uint_32 y_pixels_per_unit, int
-unit_type);
-
-void png_write_PLTE (png_structp png_ptr, png_colorp palette,
-png_uint_32 num_pal);
-
-void png_write_sBIT (png_structp png_ptr, png_color_8p sbit,
-int color_type);
-
-void png_write_sig (png_structp png_ptr);
-
-void png_write_sRGB (png_structp png_ptr, int intent);
-
-void png_write_start_row (png_structp png_ptr);
-
-void png_write_tEXt (png_structp png_ptr, png_charp key,
-png_charp text, png_size_t text_len);
-
-void png_write_tIME (png_structp png_ptr, png_timep mod_time);
-
-void png_write_tRNS (png_structp png_ptr, png_bytep trans,
-png_color_16p values, int number, int color_type);
-
-void png_write_zTXt (png_structp png_ptr, png_charp key,
-png_charp text, png_size_t text_len, int compression);
-
-voidpf png_zalloc (voidpf png_ptr, uInt items, uInt size);
-
-void png_zfree (voidpf png_ptr, voidpf ptr);