libs/Fpng.h

   1 /* -*-c-*- */
   2 /* Copyright (C) 2002  Olivier Chapuis */
   3
   4 #ifndef FPNG_H
   5 #define FPNG_H
   6
   7 /* ---------------------------- included header files ---------------------- */
   8
   9 #include "PictureBase.h"
  10
  11 #if PngSupport
  12 #include <png.h>
  13 #else
  14 #include <setjmp.h>
  15 #endif
  16
  17 /* ---------------------------- global definitions ------------------------- */
  18
  19 /* ---------------------------- global macros ------------------------------ */
  20
  21 /* ---------------------------- type definitions --------------------------- */
  22
  23 #ifndef _ZLIB_H
  24 typedef unsigned char  FzByte;
  25 typedef unsigned int   FzuInt;
  26 typedef unsigned long  FzuLong;
  27 typedef FzByte  FzBytef;
  28 #ifdef __STDC__
  29 typedef void *Fzvoidpf;
  30 typedef void *Fzvoidp;
  31 #else
  32 typedef FzByte *Fzvoidpf;
  33 typedef FzByte *Fzvoidp;
  34 #endif
  35 typedef Fzvoidpf (*Fzalloc_func) (
  36 #ifdef __STDC__
  37         Fzvoidpf opaque, FzuInt items, FzuInt size
  38 #endif
  39         );
  40 typedef Fzvoidp (*Fzfree_func)  (
  41 #ifdef __STDC__
  42         Fzvoidpf opaque, Fzvoidpf address
  43 #endif
  44         );
  45 typedef struct Fz_stream_s {
  46         FzBytef    *next_in;
  47         FzuInt     avail_in;
  48         FzuLong    total_in;
  49         FzBytef    *next_out;
  50         FzuInt     avail_out;
  51         FzuLong    total_out;
  52         char     *msg;
  53         struct internal_state *state;
  54         Fzalloc_func zalloc;
  55         Fzfree_func  zfree;
  56         Fzvoidpf     opaque;
  57         int     data_type;
  58         FzuLong   adler;
  59         FzuLong   reserved;
  60 } Fz_stream;
  61 typedef Fz_stream *Fz_streamp;
  62 #else /* _ZLIB_H */
  63 #ifdef Z_PREFIX
  64 typedef z_Byte   FzByte;
  65 typedef z_uInt   FzuInt;
  66 typedef z_uLong  FzuLong;
  67 typedef z_Bytef  FzBytef;
  68 typedef z_voidp  Fzvoidp;
  69 typedef z_voidpf Fzvoidpf;
  70 typedef z_stream Fz_stream;
  71 #else
  72 typedef Byte   FzByte;
  73 typedef uInt   FzuInt;
  74 typedef uLong  FzuLong;
  75 typedef Bytef  FzBytef;
  76 typedef voidp  Fzvoidp;
  77 typedef voidpf Fzvoidpf;
  78 typedef z_stream Fz_stream;
  79 #endif
  80 #endif /* !_ZLIB_H */
  81
  82 #if PngSupport
  83 typedef png_uint_32 Fpng_uint_32;
  84 typedef png_int_32 Fpng_int_32;
  85 typedef png_uint_16 Fpng_uint_16;
  86 typedef png_int_16 Fpng_int_16;
  87 typedef png_byte Fpng_byte;
  88 typedef png_size_t Fpng_size_t;
  89
  90 typedef png_struct Fpng_struct;
  91 typedef png_structp Fpng_structp;
  92 typedef png_structpp Fpng_structpp;
  93 typedef png_info Fpng_info;
  94 typedef png_infop Fpng_infop;
  95 typedef png_infopp Fpng_infopp;
  96 #else
  97 typedef unsigned long Fpng_uint_32;
  98 typedef long Fpng_int_32;
  99 typedef unsigned short Fpng_uint_16;
 100 typedef short Fpng_int_16;
 101 typedef unsigned char Fpng_byte;
 102 typedef size_t Fpng_size_t;
 103 typedef void             *Fpng_voidp;
 104 typedef Fpng_byte        *Fpng_bytep;
 105 typedef Fpng_uint_32     *Fpng_uint_32p;
 106 typedef Fpng_int_32      *Fpng_int_32p;
 107 typedef Fpng_uint_16     *Fpng_uint_16p;
 108 typedef Fpng_int_16      *Fpng_int_16p;
 109 typedef const char       *Fpng_const_charp;
 110 typedef char             *Fpng_charp;
 111 typedef double           *Fpng_doublep;
 112 typedef Fpng_byte         **Fpng_bytepp;
 113 typedef Fpng_uint_32      **Fpng_uint_32pp;
 114 typedef Fpng_int_32       **Fpng_int_32pp;
 115 typedef Fpng_uint_16      **Fpng_uint_16pp;
 116 typedef Fpng_int_16       **Fpng_int_16pp;
 117 typedef const char   **Fpng_const_charpp;
 118 typedef char             **Fpng_charpp;
 119 typedef double           **Fpng_doublepp;
 120 typedef char             ** *Fpng_charppp;
 121 typedef struct Fpng_color_struct
 122 {
 123         Fpng_byte red;
 124         Fpng_byte green;
 125         Fpng_byte blue;
 126 } Fpng_color;
 127 typedef Fpng_color  *Fpng_colorp;
 128 typedef Fpng_color  **Fpng_colorpp;
 129 typedef struct Fpng_color_16_struct
 130 {
 131         Fpng_byte index;
 132         Fpng_uint_16 red;
 133         Fpng_uint_16 green;
 134         Fpng_uint_16 blue;
 135         Fpng_uint_16 gray;
 136 } Fpng_color_16;
 137 typedef Fpng_color_16  *Fpng_color_16p;
 138 typedef Fpng_color_16  **Fpng_color_16pp;
 139 typedef struct Fpng_color_8_struct
 140 {
 141         Fpng_byte red;
 142         Fpng_byte green;
 143         Fpng_byte blue;
 144         Fpng_byte gray;
 145         Fpng_byte alpha;
 146 } Fpng_color_8;
 147 typedef Fpng_color_8  *Fpng_color_8p;
 148 typedef Fpng_color_8  **Fpng_color_8pp;
 149 typedef struct Fpng_text_struct
 150 {
 151         int compression;
 152         Fpng_charp key;
 153         Fpng_charp text;
 154         Fpng_size_t text_length;
 155 } Fpng_text;
 156 typedef Fpng_text  *Fpng_textp;
 157 typedef Fpng_text  **Fpng_textpp;
 158 typedef struct Fpng_time_struct
 159 {
 160         Fpng_uint_16 year;
 161         Fpng_byte month;
 162         Fpng_byte day;
 163         Fpng_byte hour;
 164         Fpng_byte minute;
 165         Fpng_byte second;
 166 } Fpng_time;
 167 typedef Fpng_time  *Fpng_timep;
 168 typedef Fpng_time  **Fpng_timepp;
 169 typedef struct Fpng_info_struct
 170 {
 171         Fpng_uint_32 width;
 172         Fpng_uint_32 height;
 173         Fpng_uint_32 valid;
 174         Fpng_uint_32 rowbytes;
 175         Fpng_colorp palette;
 176         Fpng_uint_16 num_palette;
 177         Fpng_uint_16 num_trans;
 178         Fpng_byte bit_depth;
 179         Fpng_byte color_type;
 180         Fpng_byte compression_type;
 181         Fpng_byte filter_type;
 182         Fpng_byte interlace_type;
 183         Fpng_byte channels;
 184         Fpng_byte pixel_depth;
 185         Fpng_byte spare_byte;
 186         Fpng_byte signature[8];
 187         float gamma;
 188         Fpng_byte srgb_intent;
 189         int num_text;
 190         int max_text;
 191         Fpng_textp text;
 192         Fpng_time mod_time;
 193         Fpng_color_8 sig_bit;
 194         Fpng_bytep trans;
 195         Fpng_color_16 trans_values;
 196         Fpng_color_16 background;
 197         Fpng_uint_32 x_offset;
 198         Fpng_uint_32 y_offset;
 199         Fpng_byte offset_unit_type;
 200         Fpng_uint_32 x_pixels_per_unit;
 201         Fpng_uint_32 y_pixels_per_unit;
 202         Fpng_byte phys_unit_type;
 203         Fpng_uint_16p hist;
 204         float x_white;
 205         float y_white;
 206         float x_red;
 207         float y_red;
 208         float x_green;
 209         float y_green;
 210         float x_blue;
 211         float y_blue;
 212         Fpng_charp pcal_purpose;
 213         Fpng_int_32 pcal_X0;
 214         Fpng_int_32 pcal_X1;
 215         Fpng_charp pcal_units;
 216         Fpng_charpp pcal_params;
 217         Fpng_byte pcal_type;
 218         Fpng_byte pcal_nparams;
 219 } Fpng_info;
 220 typedef Fpng_info  *Fpng_infop;
 221 typedef Fpng_info  **Fpng_infopp;
 222 typedef struct Fpng_struct_def Fpng_struct;
 223 typedef Fpng_struct  *Fpng_structp;
 224 typedef struct Fpng_row_info_struct
 225 {
 226         Fpng_uint_32 width;
 227         Fpng_uint_32 rowbytes;
 228         Fpng_byte color_type;
 229         Fpng_byte bit_depth;
 230         Fpng_byte channels;
 231         Fpng_byte pixel_depth;
 232 } Fpng_row_info;
 233 typedef Fpng_row_info  *Fpng_row_infop;
 234 typedef Fpng_row_info  **Fpng_row_infopp;
 235 typedef void (*Fpng_error_ptr)(
 236 #ifdef __STDC__
 237         Fpng_structp, Fpng_const_charp
 238 #endif
 239         );
 240 typedef void (*Fpng_rw_ptr)(
 241 #ifdef __STDC__
 242         Fpng_structp, Fpng_bytep, Fpng_size_t
 243 #endif
 244         );
 245 typedef void (*Fpng_flush_ptr) (
 246 #ifdef __STDC__
 247         Fpng_structp
 248 #endif
 249         );
 250 typedef void (*Fpng_read_status_ptr) (
 251 #ifdef __STDC__
 252         Fpng_structp, Fpng_uint_32, int
 253 #endif
 254         );
 255 typedef void (*Fpng_write_status_ptr) (
 256 #ifdef __STDC__
 257         Fpng_structp, Fpng_uint_32, int
 258 #endif
 259         );
 260 typedef void (*Fpng_progressive_info_ptr) (
 261 #ifdef __STDC__
 262         Fpng_structp, Fpng_infop
 263 #endif
 264         );
 265 typedef void (*Fpng_progressive_end_ptr) (
 266 #ifdef __STDC__
 267         Fpng_structp, Fpng_infop
 268 #endif
 269         );
 270 typedef void (*Fpng_progressive_row_ptr) (
 271 #ifdef __STDC__
 272         Fpng_structp, Fpng_bytep,Fpng_uint_32, int
 273 #endif
 274         );
 275 typedef void (*Fpng_user_transform_ptr)(
 276 #ifdef __STDC__
 277         Fpng_structp, Fpng_row_infop, Fpng_bytep
 278 #endif
 279         );
 280 typedef Fpng_voidp (*Fpng_malloc_ptr) (
 281 #ifdef __STDC__
 282         Fpng_structp, Fpng_size_t
 283 #endif
 284         );
 285 typedef void (*Fpng_free_ptr) (
 286 #ifdef __STDC__
 287         Fpng_structp, Fpng_voidp
 288 #endif
 289         );
 290 struct png_struct_def
 291 {
 292         jmp_buf jmpbuf;
 293         Fpng_error_ptr error_fn;
 294         Fpng_error_ptr warning_fn;
 295         Fpng_voidp error_ptr;
 296         Fpng_rw_ptr write_data_fn;
 297         Fpng_rw_ptr read_data_fn;
 298         Fpng_voidp io_ptr;
 299         Fpng_user_transform_ptr read_user_transform_fn;
 300         Fpng_user_transform_ptr write_user_transform_fn;
 301         Fpng_voidp user_transform_ptr;
 302         Fpng_byte user_transform_depth;
 303         Fpng_byte user_transform_channels;
 304         Fpng_uint_32 mode;
 305         Fpng_uint_32 flags;
 306         Fpng_uint_32 transformations;
 307         Fz_stream zstream;
 308         Fpng_bytep zbuf;
 309         Fpng_size_t zbuf_size;
 310         int zlib_level;
 311         int zlib_method;
 312         int zlib_window_bits;
 313         int zlib_mem_level;
 314         int zlib_strategy;
 315         Fpng_uint_32 width;
 316         Fpng_uint_32 height;
 317         Fpng_uint_32 num_rows;
 318         Fpng_uint_32 usr_width;
 319         Fpng_uint_32 rowbytes;
 320         Fpng_uint_32 irowbytes;
 321         Fpng_uint_32 iwidth;
 322         Fpng_uint_32 row_number;
 323         Fpng_bytep prev_row;
 324         Fpng_bytep row_buf;
 325         Fpng_bytep sub_row;
 326         Fpng_bytep up_row;
 327         Fpng_bytep avg_row;
 328         Fpng_bytep paeth_row;
 329         Fpng_row_info row_info;
 330         Fpng_uint_32 idat_size;
 331         Fpng_uint_32 crc;
 332         Fpng_colorp palette;
 333         Fpng_uint_16 num_palette;
 334         Fpng_uint_16 num_trans;
 335         Fpng_byte chunk_name[5];
 336         Fpng_byte compression;
 337         Fpng_byte filter;
 338         Fpng_byte interlaced;
 339         Fpng_byte pass;
 340         Fpng_byte do_filter;
 341         Fpng_byte color_type;
 342         Fpng_byte bit_depth;
 343         Fpng_byte usr_bit_depth;
 344         Fpng_byte pixel_depth;
 345         Fpng_byte channels;
 346         Fpng_byte usr_channels;
 347         Fpng_byte sig_bytes;
 348         Fpng_uint_16 filler;
 349         Fpng_byte background_gamma_type;
 350         float background_gamma;
 351         Fpng_color_16 background;
 352         Fpng_color_16 background_1;
 353         Fpng_flush_ptr output_flush_fn;
 354         Fpng_uint_32 flush_dist;
 355         Fpng_uint_32 flush_rows;
 356         int gamma_shift;
 357         float gamma;
 358         float screen_gamma;
 359         Fpng_bytep gamma_table;
 360         Fpng_bytep gamma_from_1;
 361         Fpng_bytep gamma_to_1;
 362         Fpng_uint_16pp gamma_16_table;
 363         Fpng_uint_16pp gamma_16_from_1;
 364         Fpng_uint_16pp gamma_16_to_1;
 365         Fpng_color_8 sig_bit;
 366         Fpng_color_8 shift;
 367         Fpng_bytep trans;
 368         Fpng_color_16 trans_values;
 369         Fpng_read_status_ptr read_row_fn;
 370         Fpng_write_status_ptr write_row_fn;
 371         Fpng_progressive_info_ptr info_fn;
 372         Fpng_progressive_row_ptr row_fn;
 373         Fpng_progressive_end_ptr end_fn;
 374         Fpng_bytep save_buffer_ptr;
 375         Fpng_bytep save_buffer;
 376         Fpng_bytep current_buffer_ptr;
 377         Fpng_bytep current_buffer;
 378         Fpng_uint_32 push_length;
 379         Fpng_uint_32 skip_length;
 380         Fpng_size_t save_buffer_size;
 381         Fpng_size_t save_buffer_max;
 382         Fpng_size_t buffer_size;
 383         Fpng_size_t current_buffer_size;
 384         int process_mode;
 385         int cur_palette;
 386         Fpng_size_t current_text_size;
 387         Fpng_size_t current_text_left;
 388         Fpng_charp current_text;
 389         Fpng_charp current_text_ptr;
 390         Fpng_bytepp offset_table_ptr;
 391         Fpng_bytep offset_table;
 392         Fpng_uint_16 offset_table_number;
 393         Fpng_uint_16 offset_table_count;
 394         Fpng_uint_16 offset_table_count_free;
 395         Fpng_bytep palette_lookup;
 396         Fpng_bytep dither_index;
 397         Fpng_uint_16p hist;
 398         Fpng_byte heuristic_method;
 399         Fpng_byte num_prev_filters;
 400         Fpng_bytep prev_filters;
 401         Fpng_uint_16p filter_weights;
 402         Fpng_uint_16p inv_filter_weights;
 403         Fpng_uint_16p filter_costs;
 404         Fpng_uint_16p inv_filter_costs;
 405         Fpng_charp time_buffer;
 406         Fpng_voidp mem_ptr;
 407         Fpng_malloc_ptr malloc_fn;
 408         Fpng_free_ptr free_fn;
 409         Fpng_byte rgb_to_gray_status;
 410         Fpng_byte rgb_to_gray_red_coeff;
 411         Fpng_byte rgb_to_gray_green_coeff;
 412         Fpng_byte rgb_to_gray_blue_coeff;
 413         Fpng_byte empty_plte_permitted;
 414 };
 415 typedef Fpng_struct  **Fpng_structpp;
 416 #endif
 417 /* ---------------------------- global definitions ------------------------- */
 418
 419 #define FPNG_BYTES_TO_CHECK 4
 420
 421 #if PngSupport
 422
 423 #define FPNG_LIBPNG_VER_STRING PNG_LIBPNG_VER_STRING
 424 #define FPNG_COLOR_TYPE_PALETTE PNG_COLOR_TYPE_PALETTE
 425 #define FPNG_COLOR_TYPE_RGB_ALPHA PNG_COLOR_TYPE_RGB_ALPHA
 426 #define FPNG_COLOR_TYPE_GRAY_ALPHA PNG_COLOR_TYPE_GRAY_ALPHA
 427 #define FPNG_COLOR_TYPE_GRAY PNG_COLOR_TYPE_GRAY
 428 #define FPNG_FILLER_BEFORE PNG_FILLER_BEFORE
 429 #define FPNG_FILLER_AFTER PNG_FILLER_AFTER
 430 #define FPNG_INFO_tRNS PNG_INFO_tRNS
 431
 432 #define Fpng_check_sig(a,b) png_check_sig(a,b)
 433 #define Fpng_create_read_struct(a,b,c,d) png_create_read_struct(a,b,c,d)
 434 #define Fpng_create_info_struct(a) png_create_info_struct(a)
 435 #define Fpng_destroy_read_struct(a,b,c) png_destroy_read_struct(a,b,c)
 436 #define Fpng_init_io(a,b) png_init_io(a,b)
 437 #define Fpng_read_info(a,b) png_read_info(a,b)
 438 #define Fpng_get_IHDR(a,b,c,d,e,f,g,h,i) png_get_IHDR(a,b,c,d,e,f,g,h,i)
 439 #define Fpng_set_expand(a) png_set_expand(a)
 440 #define Fpng_set_swap_alpha(a) png_set_swap_alpha(a)
 441 #define Fpng_set_filler(a,b,c) png_set_filler(a,b,c)
 442 #define Fpng_set_bgr(a) png_set_bgr(a)
 443 #define Fpng_set_strip_16(a) png_set_strip_16(a)
 444 #define Fpng_set_packing(a) png_set_packing(a)
 445 #define Fpng_set_gray_to_rgb(a) png_set_gray_to_rgb(a)
 446 #define Fpng_get_bit_depth(a,b) png_get_bit_depth(a,b)
 447 #define Fpng_set_gray_1_2_4_to_8(a) png_set_gray_1_2_4_to_8(a)
 448 #define Fpng_get_valid(a,b,c) png_get_valid(a,b,c)
 449 #define Fpng_read_end(a,b) png_read_end(a,b)
 450 #define Fpng_set_interlace_handling(a) png_set_interlace_handling(a)
 451 #define Fpng_read_rows(a,b,c,d) png_read_rows(a,b,c,d)
 452 #define Fpng_read_image(a,b) png_read_image(a,b)
 453
 454 #else
 455
 456 #define FPNG_LIBPNG_VER_STRING ""
 457 #define FPNG_COLOR_TYPE_PALETTE 0
 458 #define FPNG_COLOR_TYPE_RGB_ALPHA 1
 459 #define FPNG_COLOR_TYPE_GRAY_ALPHA 2
 460 #define FPNG_COLOR_TYPE_GRAY 3
 461 #define FPNG_FILLER_BEFORE 6
 462 #define FPNG_FILLER_AFTER 5
 463 #define FPNG_INFO_tRNS 7
 464
 465 #define Fpng_check_sig(a,b) 0
 466 #define Fpng_create_read_struct(a,b,c,d) NULL
 467 #define Fpng_create_info_struct(a) NULL
 468 #define Fpng_destroy_read_struct(a,b,c)
 469 #define Fpng_init_io(a,b)
 470 #define Fpng_read_info(a,b)
 471 #define Fpng_get_IHDR(a,b,c,d,e,f,g,h,i)
 472 #define Fpng_set_expand(a)
 473 #define Fpng_set_swap_alpha(a)
 474 #define Fpng_set_filler(a,b,c)
 475 #define Fpng_set_bgr(a)
 476 #define Fpng_set_strip_16(a)
 477 #define Fpng_set_packing(a)
 478 #define Fpng_set_gray_to_rgb(a)
 479 #define Fpng_get_bit_depth(a,b) 0
 480 #define Fpng_set_gray_1_2_4_to_8(a)
 481 #define Fpng_get_valid(a,b,c) 0
 482 #define Fpng_read_end(a,b)
 483 #define Fpng_set_interlace_handling(a) 0
 484 #define Fpng_read_rows(a,b,c,d)
 485 #define Fpng_read_image(a,b)
 486
 487 #endif
 488
 489 #endif /* FPNG_H */