23 #define PI 3.14159265358979323846
27 #define MAXINT 2147483647
30 #include "datatypes.h"
32 undef_int i_has_format(char *frmt);
34 /* constructors and destructors */
36 i_color *ICL_new_internal( unsigned char r,unsigned char g,unsigned char b,unsigned char a);
37 i_color *ICL_set_internal(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
38 void ICL_info (i_color *cl);
39 void ICL_DESTROY (i_color *cl);
40 void ICL_add (i_color *dst, i_color *src, int ch);
42 i_img *IIM_new(int x,int y,int ch);
43 void IIM_DESTROY(i_img *im);
44 i_img *i_img_new( void );
45 i_img *i_img_empty(i_img *im,int x,int y);
46 i_img *i_img_empty_ch(i_img *im,int x,int y,int ch);
47 void i_img_exorcise(i_img *im);
48 void i_img_destroy(i_img *im);
50 void i_img_info(i_img *im,int *info);
52 /* Image feature settings */
54 void i_img_setmask (i_img *im,int ch_mask);
55 int i_img_getmask (i_img *im);
56 int i_img_getchannels(i_img *im);
60 int i_ppix(i_img *im,int x,int y,i_color *val);
61 int i_gpix(i_img *im,int x,int y,i_color *val);
63 int i_ppix_d(i_img *im,int x,int y,i_color *val);
64 int i_gpix_d(i_img *im,int x,int y,i_color *val);
66 float i_gpix_pch(i_img *im,int x,int y,int ch);
68 /* functions for drawing primitives */
70 void i_box (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
71 void i_box_filled (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
72 void i_draw (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
73 void i_line_aa (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
74 void i_arc (i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
75 void i_copyto (i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
76 void i_copyto_trans(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty,i_color *trans);
77 void i_copy (i_img *im,i_img *src);
78 void i_rubthru (i_img *im,i_img *src,int tx,int ty);
80 void i_bezier_multi(i_img *im,int l,double *x,double *y,i_color *val);
81 void i_poly_aa (i_img *im,int l,double *x,double *y,i_color *val);
83 void i_flood_fill (i_img *im,int seedx,int seedy,i_color *dcol);
85 /* image processing functions */
87 void i_gaussian (i_img *im,float stdev);
88 void i_conv (i_img *im,float *coeff,int len);
90 float i_img_diff (i_img *im1,i_img *im2);
94 undef_int i_init_fonts( void );
99 undef_int init_t1( void );
100 int i_t1_new( char *pfb, char *afm );
101 int i_t1_destroy( int font_id );
102 undef_int i_t1_cp( i_img *im, int xb, int yb, int channel, int fontnum, float points, char* str, int len, int align );
103 undef_int i_t1_text( i_img *im, int xb, int yb, i_color *cl, int fontnum, float points, char* str, int len, int align );
104 void i_t1_bbox( int fontnum, float point, char *str, int len, int cords[6] );
105 void i_t1_set_aa( int st );
106 void close_t1( void );
112 #include <freetype.h>
115 struct TT_Instancehandle_ {
116 TT_Instance instance;
117 TT_Instance_Metrics imetrics;
118 TT_Glyph_Metrics gmetrics[256];
119 TT_Glyph glyphs[256];
125 typedef struct TT_Instancehandle_ TT_Instancehandle;
127 struct TT_Fonthandle_ {
129 TT_Face_Properties properties;
130 TT_Instancehandle instanceh[TT_CHC];
134 typedef struct TT_Fonthandle_ TT_Fonthandle;
138 undef_int init_tt( void );
139 TT_Fonthandle* i_tt_new(char *fontname);
140 void i_tt_destroy( TT_Fonthandle *handle );
141 undef_int i_tt_cp( TT_Fonthandle *handle,i_img *im,int xb,int yb,int channel,float points,char* txt,int len,int smooth);
142 undef_int i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char* txt, int len, int smooth);
143 undef_int i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6]);
146 #endif /* End of freetype headers */
154 /* functions for reading and writing formats */
156 /* general reader callback
157 userdata - data the user passed into the reader
158 buffer - the buffer to fill with data
159 need - the amount of data needed
160 want - the amount of space we have to store data
161 fill buffer and return the number of bytes read, 0 for eof, -1 for error
164 typedef int (*i_read_callback_t)(char *userdata, char *buffer, int need,
167 /* i_gen_reader() translates the low-level requests from whatever library
168 into buffered requests.
169 but the called function can always bypass buffering by only ever
170 reading I<need> bytes.
172 #define CBBUFSIZ 4096
175 i_read_callback_t cb;
177 char buffer[CBBUFSIZ];
182 extern int i_gen_reader(i_gen_read_data *info, char *buffer, int need);
183 extern i_gen_read_data *i_gen_read_data_new(i_read_callback_t cb, char *userdata);
184 extern void free_gen_read_data(i_gen_read_data *);
186 /* general writer callback
187 userdata - the data the user passed into the writer
188 data - the data to write
189 data_size - the number of bytes to write
190 write the data, return non-zero on success, zero on failure.
192 typedef int (*i_write_callback_t)(char *userdata, char const *data, int size);
195 i_write_callback_t cb;
197 char buffer[CBBUFSIZ];
202 extern int i_gen_writer(i_gen_write_data *info, char const *data, int size);
203 extern i_gen_write_data *i_gen_write_data_new(i_write_callback_t cb, char *userdata, int maxlength);
204 extern int free_gen_write_data(i_gen_write_data *, int flush);
206 /* transparency handling for quantized output */
207 typedef enum i_transp_tag {
208 tr_none, /* ignore any alpha channel */
209 tr_threshold, /* threshold the transparency - uses tr_threshold */
210 tr_errdiff, /* error diffusion */
211 tr_ordered /* an ordered dither */
214 /* controls how we build the colour map */
215 typedef enum i_make_colors_tag {
216 mc_none, /* user supplied colour map only */
217 mc_web_map, /* Use the 216 colour web colour map */
218 mc_addi, /* Addi's algorithm */
219 mc_mask = 0xFF /* (mask for generator) */
222 /* controls how we translate the colours */
223 typedef enum i_translate_tag {
224 pt_giflib, /* get gif lib to do it (ignores make_colours) */
225 pt_closest, /* just use the closest match within the hashbox */
226 pt_perturb, /* randomly perturb the data - uses perturb_size*/
227 pt_errdiff /* error diffusion dither - uses errdiff */
230 /* Which error diffusion map to use */
231 typedef enum i_errdiff_tag {
232 ed_floyd, /* floyd-steinberg */
233 ed_jarvis, /* Jarvis, Judice and Ninke */
234 ed_stucki, /* Stucki */
235 ed_custom, /* the map found in ed_map|width|height|orig */
236 ed_mask = 0xFF, /* mask to get the map */
237 ed_bidir = 0x100 /* change direction for each row */
240 /* which ordered dither map to use
241 currently only available for transparency
242 I don't know of a way to do ordered dither of an image against some
245 typedef enum i_ord_dith_tag
247 od_random, /* sort of random */
248 od_dot8, /* large dot */
252 od_slashline, /* / line dither */
253 od_backline, /* \ line dither */
254 od_tiny, /* small checkerbox */
255 od_custom /* custom 8x8 map */
258 typedef struct i_gif_pos_tag {
262 /* passed into i_writegif_gen() to control quantization */
263 typedef struct i_quantize_tag {
264 /* how to handle transparency */
266 /* the threshold at which to make pixels opaque */
268 i_errdiff tr_errdiff;
269 i_ord_dith tr_orddith;
270 unsigned char tr_custom[64];
272 /* how to make the colour map */
273 i_make_colors make_colors;
275 /* any existing colours
276 mc_existing is an existing colour table
277 mc_count is the number of existing colours
278 mc_size is the total size of the array that mc_existing points
279 at - this must be at least 256
285 /* how we translate the colours */
286 i_translate translate;
288 /* the error diffusion map to use if translate is mc_errdiff */
290 /* the following define the error diffusion values to use if
291 errdiff is ed_custom. ed_orig is the column on the top row that
292 represents the current
295 int ed_width, ed_height, ed_orig;
297 /* the amount of perturbation to use for translate is mc_perturb */
301 typedef struct i_gif_opts {
302 /* each image has a local color map */
305 /* images are interlaced */
308 /* time for which image is displayed
318 int user_input_count;
319 char *user_input_flags;
326 /* this is added to the color table when we make an image transparent */
329 /* image positions */
331 i_gif_pos *positions;
333 /* Netscape loop extension - number of loops */
337 extern void quant_makemap(i_quantize *quant, i_img **imgs, int count);
338 extern i_palidx *quant_translate(i_quantize *quant, i_img *img);
339 extern void quant_transparent(i_quantize *quant, i_palidx *indices, i_img *img, i_palidx trans_index);
342 i_img* i_readjpeg(int fd,char** iptc_itext,int *tlength);
343 i_img* i_readjpeg_scalar(char *data, int length,char** iptc_itext,int *itlength);
344 i_img* i_readjpeg_wiol(io_glue *ig, int length, char** iptc_itext, int *itlength);
346 i_img* i_readjpeg_extra2(int fd,char** iptc_itext);
347 undef_int i_writejpeg(i_img *im,int fd,int qfactor);
348 #endif /* HAVE_LIBJPEG */
351 i_img* i_readtiff_wiol(io_glue *ig, int length);
352 undef_int i_writetiff_wiol(i_img *im, io_glue *ig);
354 #endif /* HAVE_LIBTIFF */
357 i_img *i_readpng(int fd);
358 i_img *i_readpng_scalar(char *data, int length);
359 undef_int i_writepng(i_img *im,int fd);
360 #endif /* HAVE_LIBPNG */
363 i_img *i_readgif(int fd, int **colour_table, int *colours);
364 i_img *i_readgif_scalar(char *data, int length, int **colour_table, int *colours);
365 i_img *i_readgif_callback(i_read_callback_t callback, char *userdata, int **colour_table, int *colours);
366 undef_int i_writegif(i_img *im,int fd,int colors,int pixdev,int fixedlen,i_color fixed[]);
367 undef_int i_writegifmc(i_img *im,int fd,int colors);
368 undef_int i_writegifex(i_img *im,int fd);
369 undef_int i_writegif_gen(i_quantize *quant, int fd, i_img **imgs, int count, i_gif_opts *opts);
370 undef_int i_writegif_callback(i_quantize *quant, i_write_callback_t cb, char *userdata, int maxbuffer, i_img **imgs, int count, i_gif_opts *opts);
372 void i_qdist(i_img *im);
374 #endif /* HAVE_LIBGIF */
376 i_img *i_readraw(int fd,int x,int y,int datachannels,int storechannels,int intrl);
377 undef_int i_writeraw(i_img* im,int fd);
379 i_img *i_readpnm_wiol(io_glue *ig, int length);
380 undef_int i_writeppm(i_img *im,int fd);
383 i_img* i_scaleaxis(i_img *im, float Value, int Axis);
384 i_img* i_scale_nn(i_img *im, float scx, float scy);
385 i_img* i_haar(i_img *im);
386 int i_count_colors(i_img *im,int maxc);
388 i_img* i_transform(i_img *im, int *opx,int opxl,int *opy,int opyl,double parm[],int parmlen);
391 i_img* i_transform2(int width, int height, int channels,
392 struct rm_op *ops, int ops_count,
393 double *n_regs, int n_regs_count,
394 i_color *c_regs, int c_regs_count,
395 i_img **in_imgs, int in_imgs_count);
398 void i_contrast(i_img *im, float intensity);
399 void i_hardinvert(i_img *im);
400 void i_noise(i_img *im, float amount, unsigned char type);
401 void i_bumpmap(i_img *im,i_img *bump,int channel,int light_x,int light_y,int strength);
402 void i_postlevels(i_img *im,int levels);
403 void i_mosaic(i_img *im,int size);
404 void i_watermark(i_img *im,i_img *wmark,int tx,int ty,int pixdiff);
405 void i_autolevels(i_img *im,float lsat,float usat,float skew);
406 void i_radnoise(i_img *im,int xo,int yo,float rscale,float ascale);
407 void i_turbnoise(i_img *im,float xo,float yo,float scale);
408 void i_gradgen(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
409 void i_nearest_color(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
411 /* Debug only functions */
413 void malloc_state( void );
415 /* this is sort of obsolete now */
418 undef_int (*i_has_format)(char *frmt);
419 i_color*(*ICL_set)(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
420 void (*ICL_info)(i_color *cl);
422 i_img*(*i_img_new)( void );
423 i_img*(*i_img_empty)(i_img *im,int x,int y);
424 i_img*(*i_img_empty_ch)(i_img *im,int x,int y,int ch);
425 void(*i_img_exorcise)(i_img *im);
427 void(*i_img_info)(i_img *im,int *info);
429 void(*i_img_setmask)(i_img *im,int ch_mask);
430 int (*i_img_getmask)(i_img *im);
432 int (*i_ppix)(i_img *im,int x,int y,i_color *val);
433 int (*i_gpix)(i_img *im,int x,int y,i_color *val);
435 void(*i_box)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
436 void(*i_draw)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
437 void(*i_arc)(i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
438 void(*i_copyto)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
439 void(*i_copyto_trans)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty,i_color *trans);
440 void(*i_rubthru)(i_img *im,i_img *src,int tx,int ty);
445 see error.c for documentation
446 the error information is currently global
452 typedef void (*i_error_cb)(int code, char const *msg);
453 typedef void (*i_failed_cb)(i_errmsg *msgs);
454 extern i_error_cb i_set_error_cb(i_error_cb);
455 extern i_failed_cb i_set_failed_cb(i_failed_cb);
456 extern void i_set_argv0(char const *);
457 extern int i_set_errors_fatal(int new_fatal);
458 extern i_errmsg *i_errors();
460 extern void i_push_error(int code, char const *msg);
461 extern void i_push_errorf(int code, char const *fmt, ...);
462 extern void i_push_errorvf(int code, char const *fmt, va_list);
463 extern void i_clear_error();
464 extern int i_failed(int code, char const *msg);