src/png/libpngpf.3

   1 .TH LIBPNGPF 3 "January 14, 1999"
   2 .SH NAME
   3 libpng \- Portable Network Graphics (PNG) Reference Library 1.0.3 - January 14, 1999
   4 (private functions)
   5 .SH SYNOPSIS
   6 #include <png.h>
   7
   8 void png_build_gamma_table (png_structp png_ptr);
   9
  10 void png_build_grayscale_palette (int bit_depth, png_colorp
  11 palette);
  12
  13 void png_calculate_crc (png_structp png_ptr, png_bytep ptr,
  14 png_size_t length);
  15 void png_check_chunk_name (png_structp png_ptr, png_bytep
  16 chunk_name);
  17
  18 png_size_t png_check_keyword (png_structp png_ptr, png_charp
  19 key, png_charpp new_key);
  20
  21 void png_combine_row (png_structp png_ptr, png_bytep row, int
  22 mask);
  23
  24 void png_correct_palette (png_structp png_ptr, png_colorp
  25 palette, int num_palette);
  26
  27 int png_crc_error (png_structp png_ptr);
  28
  29 int png_crc_finish (png_structp png_ptr, png_uint_32 skip);
  30
  31 void png_crc_read (png_structp png_ptr, png_bytep buf,
  32 png_size_t length);
  33
  34 png_voidp png_create_struct (int type, png_malloc_ptr malloc_fn);
  35
  36 png_voidp png_create_struct_2 (int type);
  37
  38 void png_destroy_struct (png_voidp struct_ptr);
  39
  40 void png_destroy_struct_2 (png_voidp struct_ptr, png_free_ptr
  41 free_fn);
  42
  43 void png_do_background (png_row_infop row_info, png_bytep row,
  44 png_color_16p trans_values, png_color_16p background,
  45 png_color_16p background_1, png_bytep gamma_table, png_bytep
  46 gamma_from_1, png_bytep gamma_to_1, png_uint_16pp gamma_16,
  47 png_uint_16pp gamma_16_from_1, png_uint_16pp gamma_16_to_1, int
  48 gamma_shift);
  49
  50 void png_do_bgr (png_row_infop row_info, png_bytep row);
  51
  52 void png_do_chop (png_row_infop row_info, png_bytep row);
  53
  54 void png_do_dither (png_row_infop row_info, png_bytep row,
  55 png_bytep palette_lookup, png_bytep dither_lookup);
  56
  57 void png_do_expand (png_row_infop row_info, png_bytep row,
  58 png_color_16p trans_value);
  59
  60 void png_do_expand_palette (png_row_infop row_info, png_bytep
  61 row, png_colorp palette, png_bytep trans, int num_trans);
  62
  63 void png_do_gamma (png_row_infop row_info, png_bytep row,
  64 png_bytep gamma_table, png_uint_16pp gamma_16_table, int
  65 gamma_shift);
  66
  67 void png_do_gray_to_rgb (png_row_infop row_info, png_bytep
  68 row);
  69
  70 void png_do_invert (png_row_infop row_info, png_bytep row);
  71
  72 void png_do_pack (png_row_infop row_info, png_bytep row,
  73 png_uint_32 bit_depth);
  74
  75 void png_do_packswap (png_row_infop row_info, png_bytep row);
  76
  77 void png_do_read_filler (png_row_infop row_info, png_bytep row,
  78 png_uint_32 filler, png_uint_32 flags);
  79
  80 void png_do_read_interlace (png_row_infop row_info, png_bytep
  81 row, int pass, png_uint_32 transformations);
  82
  83 void png_do_read_invert_alpha (png_row_infop row_info,
  84 png_bytep row);
  85
  86 void png_do_read_swap_alpha (png_row_infop row_info, png_bytep
  87 row);
  88
  89 void png_do_read_transformations (png_structp png_ptr);
  90
  91 int png_do_rgb_to_gray (png_row_infop row_info, png_bytep
  92 row);
  93
  94 void png_do_shift (png_row_infop row_info, png_bytep row,
  95 png_color_8p bit_depth);
  96
  97 void png_do_strip_filler (png_row_infop row_info, png_bytep
  98 row, png_uint_32 flags);
  99
 100 void png_do_swap (png_row_infop row_info, png_bytep row);
 101
 102 void png_do_unpack (png_row_infop row_info, png_bytep row);
 103
 104 void png_do_unshift (png_row_infop row_info, png_bytep row,
 105 png_color_8p sig_bits);
 106
 107 void png_do_write_interlace (png_row_infop row_info, png_bytep
 108 row, int pass);
 109
 110 void png_do_write_invert_alpha (png_row_infop row_info,
 111 png_bytep row);
 112
 113 void png_do_write_swap_alpha (png_row_infop row_info, png_bytep
 114 row);
 115
 116 void png_do_write_transformations (png_structp png_ptr);
 117
 118 void *png_far_to_near (png_structp png_ptr,png_voidp ptr,
 119 int check);
 120
 121 void png_flush (png_structp png_ptr);
 122
 123 png_int_32 png_get_int_32 (png_bytep buf);
 124
 125 png_uint_16 png_get_uint_16 (png_bytep buf);
 126
 127 png_uint_32 png_get_uint_32 (png_bytep buf);
 128
 129 void png_handle_bKGD (png_structp png_ptr, png_infop info_ptr,
 130 png_uint_32 length);
 131
 132 void png_handle_cHRM (png_structp png_ptr, png_infop info_ptr,
 133 png_uint_32 length);
 134
 135 void png_handle_gAMA (png_structp png_ptr, png_infop info_ptr,
 136 png_uint_32 length);
 137
 138 void png_handle_hIST (png_structp png_ptr, png_infop info_ptr,
 139 png_uint_32 length);
 140
 141 void png_handle_IEND (png_structp png_ptr, png_infop info_ptr,
 142 png_uint_32 length);
 143
 144 void png_handle_IHDR (png_structp png_ptr, png_infop info_ptr,
 145 png_uint_32 length);
 146
 147 void png_handle_oFFs (png_structp png_ptr, png_infop info_ptr,
 148 png_uint_32 length);
 149
 150 void png_handle_pCAL (png_structp png_ptr, png_infop info_ptr,
 151 png_uint_32 length);
 152
 153 void png_handle_pHYs (png_structp png_ptr, png_infop info_ptr,
 154 png_uint_32 length);
 155
 156 void png_handle_PLTE (png_structp png_ptr, png_infop info_ptr,
 157 png_uint_32 length);
 158
 159 void png_handle_sBIT (png_structp png_ptr, png_infop info_ptr,
 160 png_uint_32 length);
 161
 162 void png_handle_sRGB (png_structp png_ptr, png_infop info_ptr,
 163 png_uint_32 length);
 164
 165 void png_handle_tEXt (png_structp png_ptr, png_infop info_ptr,
 166 png_uint_32 length);
 167
 168 void png_handle_tIME (png_structp png_ptr, png_infop info_ptr,
 169 png_uint_32 length);
 170
 171 void png_handle_tRNS (png_structp png_ptr, png_infop info_ptr,
 172 png_uint_32 length);
 173
 174 void png_handle_unknown (png_structp png_ptr, png_infop
 175 info_ptr, png_uint_32 length);
 176
 177 void png_handle_zTXt (png_structp png_ptr, png_infop info_ptr,
 178 png_uint_32 length);
 179
 180 void png_info_destroy (png_structp png_ptr, png_infop
 181 info_ptr);
 182
 183 void png_init_read_transformations (png_structp png_ptr);
 184
 185 void png_process_IDAT_data (png_structp png_ptr, png_bytep
 186 buffer, png_size_t buffer_length);
 187
 188 void png_process_some_data (png_structp png_ptr, png_infop
 189 info_ptr);
 190
 191 void png_push_check_crc (png_structp png_ptr);
 192
 193 void png_push_crc_finish (png_structp png_ptr);
 194
 195 void png_push_crc_skip (png_structp png_ptr, png_uint_32
 196 length);
 197
 198 void png_push_fill_buffer (png_structp png_ptr, png_bytep
 199 buffer, png_size_t length);
 200
 201 void png_push_handle_tEXt (png_structp png_ptr, png_infop
 202 info_ptr, png_uint_32 length);
 203
 204 void png_push_handle_unknown (png_structp png_ptr, png_infop
 205 info_ptr, png_uint_32 length);
 206
 207 void png_push_handle_zTXt (png_structp png_ptr, png_infop
 208 info_ptr, png_uint_32 length);
 209
 210 void png_push_have_end (png_structp png_ptr, png_infop
 211 info_ptr);
 212
 213 void png_push_have_info (png_structp png_ptr, png_infop
 214 info_ptr);
 215
 216 void png_push_have_row (png_structp png_ptr, png_bytep row);
 217
 218 void png_push_process_row (png_structp png_ptr);
 219
 220 void png_push_read_chunk (png_structp png_ptr, png_infop
 221 info_ptr);
 222
 223 void png_push_read_end (png_structp png_ptr, png_infop
 224 info_ptr);
 225
 226 void png_push_read_IDAT (png_structp png_ptr);
 227
 228 void png_push_read_sig (png_structp png_ptr, png_infop
 229 info_ptr);
 230
 231 void png_push_read_tEXt (png_structp png_ptr, png_infop
 232 info_ptr);
 233
 234 void png_push_read_zTXt (png_structp png_ptr, png_infop
 235 info_ptr);
 236
 237 void png_push_restore_buffer (png_structp png_ptr, png_bytep
 238 buffer, png_size_t buffer_length);
 239
 240 void png_push_save_buffer (png_structp png_ptr);
 241
 242 void png_read_data (png_structp png_ptr, png_bytep data,
 243 png_size_t length);
 244
 245 void png_read_filter_row (png_structp png_ptr, png_row_infop
 246 row_info, png_bytep row, png_bytep prev_row, int filter);
 247
 248 void png_read_finish_row (png_structp png_ptr);
 249
 250 void png_read_init (png_structp png_ptr);
 251
 252 void png_read_push_finish_row (png_structp png_ptr);
 253
 254 void png_read_start_row (png_structp png_ptr);
 255
 256 void png_read_transform_info (png_structp png_ptr, png_infop
 257 info_ptr);
 258
 259 void png_reset_crc (png_structp png_ptr);
 260
 261 void png_save_int_32 (png_bytep buf, png_int_32 i);
 262
 263 void png_save_uint_16 (png_bytep buf, unsigned int i);
 264
 265 void png_save_uint_32 (png_bytep buf, png_uint_32 i);
 266
 267 void png_write_bKGD (png_structp png_ptr, png_color_16p values,
 268 int color_type);
 269
 270 void png_write_cHRM (png_structp png_ptr, double white_x,
 271 double white_y, double red_x, double red_y, double green_x,
 272 double green_y, double blue_x, double blue_y);
 273
 274 void png_write_data (png_structp png_ptr, png_bytep data,
 275 png_size_t length);
 276 void png_write_filtered_row (png_structp png_ptr, png_bytep
 277 filtered_row);
 278
 279 void png_write_find_filter (png_structp png_ptr, png_row_infop
 280 row_info);
 281
 282 void png_write_finish_row (png_structp png_ptr);
 283
 284 void png_write_gAMA (png_structp png_ptr, double file_gamma);
 285
 286 void png_write_hIST (png_structp png_ptr, png_uint_16p hist,
 287 int num_hist);
 288
 289 void png_write_init (png_structp png_ptr);
 290
 291 void png_write_IDAT (png_structp png_ptr, png_bytep data,
 292 png_size_t length);
 293
 294 void png_write_IEND (png_structp png_ptr);
 295
 296 void png_write_IHDR (png_structp png_ptr, png_uint_32 width,
 297 png_uint_32 height, int bit_depth, int color_type, int
 298 compression_type, int filter_type, int interlace_type);
 299
 300 void png_write_oFFs (png_structp png_ptr, png_uint_32 x_offset,
 301 png_uint_32 y_offset, int unit_type);
 302
 303 void png_write_pCAL (png_structp png_ptr, png_charp purpose,
 304 png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp
 305 units, png_charpp params);
 306
 307 void png_write_pHYs (png_structp png_ptr, png_uint_32
 308 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, int
 309 unit_type);
 310
 311 void png_write_PLTE (png_structp png_ptr, png_colorp palette,
 312 png_uint_32 num_pal);
 313
 314 void png_write_sBIT (png_structp png_ptr, png_color_8p sbit,
 315 int color_type);
 316
 317 void png_write_sig (png_structp png_ptr);
 318
 319 void png_write_sRGB (png_structp png_ptr, int intent);
 320
 321 void png_write_start_row (png_structp png_ptr);
 322
 323 void png_write_tEXt (png_structp png_ptr, png_charp key,
 324 png_charp text, png_size_t text_len);
 325
 326 void png_write_tIME (png_structp png_ptr, png_timep mod_time);
 327
 328 void png_write_tRNS (png_structp png_ptr, png_bytep trans,
 329 png_color_16p values, int number, int color_type);
 330
 331 void png_write_zTXt (png_structp png_ptr, png_charp key,
 332 png_charp text, png_size_t text_len, int compression);
 333
 334 voidpf png_zalloc (voidpf png_ptr, uInt items, uInt size);
 335
 336 void png_zfree (voidpf png_ptr, voidpf ptr);
 337
 338 .SH DESCRIPTION
 339 The functions listed above are used privately by libpng
 340 and are not recommended for use by applications.  They
 341 are listed alphabetically here as an aid to libpng maintainers.
 342 See png.h for more information on these functions.
 343
 344 .SH SEE ALSO
 345 libpng(3), png(5)
 346 .SH AUTHOR
 347 Glenn Randers-Pehrson