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 extern i_fcolor *i_fcolor_new(double r, double g, double b, double a);
43 extern void i_fcolor_destroy(i_fcolor *cl);
45 extern void i_rgb_to_hsvf(i_fcolor *color);
46 extern void i_hsv_to_rgbf(i_fcolor *color);
47 extern void i_rgb_to_hsv(i_color *color);
48 extern void i_hsv_to_rgb(i_color *color);
50 i_img *IIM_new(int x,int y,int ch);
51 void IIM_DESTROY(i_img *im);
52 i_img *i_img_new( void );
53 i_img *i_img_empty(i_img *im,int x,int y);
54 i_img *i_img_empty_ch(i_img *im,int x,int y,int ch);
55 void i_img_exorcise(i_img *im);
56 void i_img_destroy(i_img *im);
58 void i_img_info(i_img *im,int *info);
60 extern i_img *i_sametype(i_img *im, int xsize, int ysize);
61 extern i_img *i_sametype_chans(i_img *im, int xsize, int ysize, int channels);
63 i_img *i_img_pal_new(int x, int y, int ch, int maxpal);
65 /* Image feature settings */
67 void i_img_setmask (i_img *im,int ch_mask);
68 int i_img_getmask (i_img *im);
69 int i_img_getchannels(i_img *im);
74 int i_ppix(i_img *im,int x,int y,i_color *val);
75 int i_gpix(i_img *im,int x,int y,i_color *val);
76 int i_ppixf(i_img *im,int x,int y,i_color *val);
77 int i_gpixf(i_img *im,int x,int y,i_color *val);
80 #define i_ppix(im, x, y, val) (((im)->i_f_ppix)((im), (x), (y), (val)))
81 #define i_gpix(im, x, y, val) (((im)->i_f_gpix)((im), (x), (y), (val)))
82 #define i_ppixf(im, x, y, val) (((im)->i_f_ppixf)((im), (x), (y), (val)))
83 #define i_gpixf(im, x, y, val) (((im)->i_f_gpixf)((im), (x), (y), (val)))
86 int i_ppix_d(i_img *im,int x,int y,i_color *val);
87 int i_gpix_d(i_img *im,int x,int y,i_color *val);
88 int i_plin_d(i_img *im,int l, int r, int y, i_color *val);
89 int i_glin_d(i_img *im,int l, int r, int y, i_color *val);
92 #define i_plin(im, l, r, y, val) (((im)->i_f_plin)(im, l, r, y, val))
93 #define i_glin(im, l, r, y, val) (((im)->i_f_glin)(im, l, r, y, val))
94 #define i_plinf(im, l, r, y, val) (((im)->i_f_plinf)(im, l, r, y, val))
95 #define i_glinf(im, l, r, y, val) (((im)->i_f_glinf)(im, l, r, y, val))
97 #define i_gsamp(im, l, r, y, samps, chans, count) \
98 (((im)->i_f_gsamp)((im), (l), (r), (y), (samps), (chans), (count)))
99 #define i_gsampf(im, l, r, y, samps, chans, count) \
100 (((im)->i_f_gsampf)((im), (l), (r), (y), (samps), (chans), (count)))
102 #define i_psamp(im, l, r, y, samps, chans, count) \
103 (((im)->i_f_gsamp)((im), (l), (r), (y), (samps), (chans), (count)))
104 #define i_psampf(im, l, r, y, samps, chans, count) \
105 (((im)->i_f_gsampf)((im), (l), (r), (y), (samps), (chans), (count)))
110 #define i_findcolor(im, color, entry) \
111 (((im)->i_f_findcolor) ? ((im)->i_f_findcolor)((im), (color), (entry)) : 0)
113 #define i_gpal(im, l, r, y, vals) \
114 (((im)->i_f_gpal) ? ((im)->i_f_gpal)((im), (l), (r), (y), (vals)) : 0)
115 #define i_ppal(im, l, r, y, vals) \
116 (((im)->i_f_ppal) ? ((im)->i_f_ppal)((im), (l), (r), (y), (vals)) : 0)
117 #define i_addcolors(im, colors, count) \
118 (((im)->i_f_addcolors) ? ((im)->i_f_addcolors)((im), (colors), (count)) : -1)
119 #define i_getcolors(im, index, color, count) \
120 (((im)->i_f_getcolors) ? \
121 ((im)->i_f_getcolors)((im), (index), (color), (count)) : 0)
122 #define i_setcolors(im, index, color, count) \
123 (((im)->i_f_setcolors) ? \
124 ((im)->i_f_setcolors)((im), (index), (color), (count)) : 0)
125 #define i_colorcount(im) \
126 (((im)->i_f_colorcount) ? ((im)->i_f_colorcount)(im) : -1)
127 #define i_maxcolors(im) \
128 (((im)->i_f_maxcolors) ? ((im)->i_f_maxcolors)(im) : -1)
129 #define i_findcolor(im, color, entry) \
130 (((im)->i_f_findcolor) ? ((im)->i_f_findcolor)((im), (color), (entry)) : 0)
132 #define i_img_virtual(im) ((im)->virtual)
133 #define i_img_type(im) ((im)->type)
134 #define i_img_bits(im) ((im)->bits)
139 typedef void (*i_fill_with_color_f)
140 (struct i_fill_tag *fill, int x, int y, int width, int channels,
142 typedef void (*i_fill_with_fcolor_f)
143 (struct i_fill_tag *fill, int x, int y, int width, int channels,
145 typedef void (*i_fill_destroy_f)(struct i_fill_tag *fill);
146 typedef void (*i_fill_combine_f)(i_color *out, i_color *in, int channels,
148 typedef void (*i_fill_combinef_f)(i_fcolor *out, i_fcolor *in, int channels,
152 typedef struct i_fill_tag
154 /* called for 8-bit/sample image (and maybe lower) */
155 /* this may be NULL, if so call fill_with_fcolor */
156 i_fill_with_color_f fill_with_color;
158 /* called for other sample sizes */
159 /* this must be non-NULL */
160 i_fill_with_fcolor_f fill_with_fcolor;
162 /* called if non-NULL to release any extra resources */
163 i_fill_destroy_f destroy;
165 /* if non-zero the caller will fill data with the original data
167 i_fill_combine_f combine;
168 i_fill_combinef_f combinef;
187 extern i_fill_t *i_new_fill_solidf(i_fcolor *c, int combine);
188 extern i_fill_t *i_new_fill_solid(i_color *c, int combine);
190 i_new_fill_hatch(i_color *fg, i_color *bg, int combine, int hatch,
191 unsigned char *cust_hatch, int dx, int dy);
193 i_new_fill_hatchf(i_fcolor *fg, i_fcolor *bg, int combine, int hatch,
194 unsigned char *cust_hatch, int dx, int dy);
196 i_new_fill_image(i_img *im, double *matrix, int xoff, int yoff, int combine);
197 extern void i_fill_destroy(i_fill_t *fill);
199 float i_gpix_pch(i_img *im,int x,int y,int ch);
201 /* functions for drawing primitives */
203 void i_box (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
204 void i_box_filled (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
205 void i_box_cfill(i_img *im, int x1, int y1, int x2, int y2, i_fill_t *fill);
206 void i_line (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
207 void i_line_aa (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
208 void i_arc (i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
209 void i_arc_cfill(i_img *im,int x,int y,float rad,float d1,float d2,i_fill_t *fill);
210 void i_circle_aa (i_img *im,float x, float y,float rad,i_color *val);
211 void i_copyto (i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
212 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);
213 void i_copy (i_img *im,i_img *src);
214 int i_rubthru (i_img *im, i_img *src, int tx, int ty, int src_minx, int src_miny, int src_maxx, int src_maxy);
217 undef_int i_flipxy (i_img *im, int direction);
218 extern i_img *i_rotate90(i_img *im, int degrees);
219 extern i_img *i_rotate_exact(i_img *im, double amount);
220 extern i_img *i_rotate_exact_bg(i_img *im, double amount, i_color *backp, i_fcolor *fbackp);
221 extern i_img *i_matrix_transform(i_img *im, int xsize, int ysize, double *matrix);
222 extern i_img *i_matrix_transform_bg(i_img *im, int xsize, int ysize, double *matrix, i_color *backp, i_fcolor *fbackp);
224 void i_bezier_multi(i_img *im,int l,double *x,double *y,i_color *val);
225 void i_poly_aa (i_img *im,int l,double *x,double *y,i_color *val);
226 void i_poly_aa_cfill(i_img *im,int l,double *x,double *y,i_fill_t *fill);
228 undef_int i_flood_fill (i_img *im,int seedx,int seedy,i_color *dcol);
229 undef_int i_flood_cfill(i_img *im, int seedx, int seedy, i_fill_t *fill);
232 /* image processing functions */
234 void i_gaussian (i_img *im,float stdev);
235 void i_conv (i_img *im,float *coeff,int len);
236 void i_unsharp_mask(i_img *im, double stddev, double scale);
238 /* colour manipulation */
239 extern int i_convert(i_img *im, i_img *src, float *coeff, int outchan, int inchan);
240 extern void i_map(i_img *im, unsigned char (*maps)[256], unsigned int mask);
242 float i_img_diff (i_img *im1,i_img *im2);
246 undef_int i_init_fonts( int t1log );
251 undef_int i_init_t1( int t1log );
252 int i_t1_new( char *pfb, char *afm );
253 int i_t1_destroy( int font_id );
254 undef_int i_t1_cp( i_img *im, int xb, int yb, int channel, int fontnum, float points, char* str, int len, int align, int utf8, char const *flags );
255 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, int utf8, char const *flags );
256 int i_t1_bbox( int fontnum, float point, char *str, int len, int cords[6], int utf8, char const *flags );
257 void i_t1_set_aa( int st );
258 void close_t1( void );
259 int i_t1_has_chars(int font_num, char const *text, int len, int utf8, char *out);
260 extern int i_t1_face_name(int font_num, char *name_buf, size_t name_buf_size);
261 extern int i_t1_glyph_name(int font_num, unsigned long ch, char *name_buf,
262 size_t name_buf_size);
267 struct TT_Fonthandle_;
269 typedef struct TT_Fonthandle_ TT_Fonthandle;
271 undef_int i_init_tt( void );
272 TT_Fonthandle* i_tt_new(char *fontname);
273 void i_tt_destroy( TT_Fonthandle *handle );
274 undef_int i_tt_cp( TT_Fonthandle *handle,i_img *im,int xb,int yb,int channel,float points,char const* txt,int len,int smooth, int utf8);
275 undef_int i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char const* txt, int len, int smooth, int utf8);
276 undef_int i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6], int utf8);
277 int i_tt_has_chars(TT_Fonthandle *handle, char const *text, int len, int utf8, char *out);
278 void i_tt_dump_names(TT_Fonthandle *handle);
279 int i_tt_face_name(TT_Fonthandle *handle, char *name_buf,
280 size_t name_buf_size);
281 int i_tt_glyph_name(TT_Fonthandle *handle, unsigned long ch, char *name_buf,
282 size_t name_buf_size);
284 #endif /* End of freetype headers */
288 typedef struct FT2_Fonthandle FT2_Fonthandle;
289 extern int i_ft2_init(void);
290 extern FT2_Fonthandle * i_ft2_new(char *name, int index);
291 extern void i_ft2_destroy(FT2_Fonthandle *handle);
292 extern int i_ft2_setdpi(FT2_Fonthandle *handle, int xdpi, int ydpi);
293 extern int i_ft2_getdpi(FT2_Fonthandle *handle, int *xdpi, int *ydpi);
294 extern int i_ft2_settransform(FT2_Fonthandle *handle, double *matrix);
295 extern int i_ft2_sethinting(FT2_Fonthandle *handle, int hinting);
296 extern int i_ft2_bbox(FT2_Fonthandle *handle, double cheight, double cwidth,
297 char const *text, int len, int *bbox, int utf8);
298 extern int i_ft2_text(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
299 i_color *cl, double cheight, double cwidth,
300 char const *text, int len, int align, int aa,
301 int vlayout, int utf8);
302 extern int i_ft2_cp(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
303 int channel, double cheight, double cwidth,
304 char const *text, int len, int align, int aa, int vlayout,
306 extern int i_ft2_has_chars(FT2_Fonthandle *handle, char const *text, int len,
307 int utf8, char *work);
308 extern int i_ft2_face_name(FT2_Fonthandle *handle, char *name_buf,
309 size_t name_buf_size);
310 extern int i_ft2_can_face_name(void);
311 extern int i_ft2_glyph_name(FT2_Fonthandle *handle, unsigned char ch,
312 char *name_buf, size_t name_buf_size);
313 extern int i_ft2_can_do_glyph_names(void);
314 extern int i_ft2_face_has_glyph_names(FT2_Fonthandle *handle);
320 extern int i_wf_bbox(char *face, int size, char *text, int length, int *bbox);
321 extern int i_wf_text(char *face, i_img *im, int tx, int ty, i_color *cl,
322 int size, char *text, int len, int align, int aa);
323 extern int i_wf_cp(char *face, i_img *im, int tx, int ty, int channel,
324 int size, char *text, int len, int align, int aa);
328 /* functions for reading and writing formats */
330 /* general reader callback
331 userdata - data the user passed into the reader
332 buffer - the buffer to fill with data
333 need - the amount of data needed
334 want - the amount of space we have to store data
335 fill buffer and return the number of bytes read, 0 for eof, -1 for error
338 typedef int (*i_read_callback_t)(char *userdata, char *buffer, int need,
341 /* i_gen_reader() translates the low-level requests from whatever library
342 into buffered requests.
343 but the called function can always bypass buffering by only ever
344 reading I<need> bytes.
346 #define CBBUFSIZ 4096
349 i_read_callback_t cb;
351 char buffer[CBBUFSIZ];
356 extern int i_gen_reader(i_gen_read_data *info, char *buffer, int need);
357 extern i_gen_read_data *i_gen_read_data_new(i_read_callback_t cb, char *userdata);
358 extern void i_free_gen_read_data(i_gen_read_data *);
360 /* general writer callback
361 userdata - the data the user passed into the writer
362 data - the data to write
363 data_size - the number of bytes to write
364 write the data, return non-zero on success, zero on failure.
366 typedef int (*i_write_callback_t)(char *userdata, char const *data, int size);
369 i_write_callback_t cb;
371 char buffer[CBBUFSIZ];
376 extern int i_gen_writer(i_gen_write_data *info, char const *data, int size);
377 extern i_gen_write_data *i_gen_write_data_new(i_write_callback_t cb, char *userdata, int maxlength);
378 extern int i_free_gen_write_data(i_gen_write_data *, int flush);
380 /* transparency handling for quantized output */
381 typedef enum i_transp_tag {
382 tr_none, /* ignore any alpha channel */
383 tr_threshold, /* threshold the transparency - uses tr_threshold */
384 tr_errdiff, /* error diffusion */
385 tr_ordered /* an ordered dither */
388 /* controls how we build the colour map */
389 typedef enum i_make_colors_tag {
390 mc_none, /* user supplied colour map only */
391 mc_web_map, /* Use the 216 colour web colour map */
392 mc_addi, /* Addi's algorithm */
393 mc_median_cut, /* median cut - similar to giflib, hopefully */
394 mc_mask = 0xFF /* (mask for generator) */
397 /* controls how we translate the colours */
398 typedef enum i_translate_tag {
399 pt_giflib, /* get gif lib to do it (ignores make_colours) */
400 pt_closest, /* just use the closest match within the hashbox */
401 pt_perturb, /* randomly perturb the data - uses perturb_size*/
402 pt_errdiff /* error diffusion dither - uses errdiff */
405 /* Which error diffusion map to use */
406 typedef enum i_errdiff_tag {
407 ed_floyd, /* floyd-steinberg */
408 ed_jarvis, /* Jarvis, Judice and Ninke */
409 ed_stucki, /* Stucki */
410 ed_custom, /* the map found in ed_map|width|height|orig */
411 ed_mask = 0xFF, /* mask to get the map */
412 ed_bidir = 0x100 /* change direction for each row */
415 /* which ordered dither map to use
416 currently only available for transparency
417 I don't know of a way to do ordered dither of an image against some
420 typedef enum i_ord_dith_tag
422 od_random, /* sort of random */
423 od_dot8, /* large dot */
427 od_slashline, /* / line dither */
428 od_backline, /* \ line dither */
429 od_tiny, /* small checkerbox */
430 od_custom /* custom 8x8 map */
433 typedef struct i_gif_pos_tag {
437 /* passed into i_writegif_gen() to control quantization */
438 typedef struct i_quantize_tag {
439 /* how to handle transparency */
441 /* the threshold at which to make pixels opaque */
443 i_errdiff tr_errdiff;
444 i_ord_dith tr_orddith;
445 unsigned char tr_custom[64];
447 /* how to make the colour map */
448 i_make_colors make_colors;
450 /* any existing colours
451 mc_existing is an existing colour table
452 mc_count is the number of existing colours
453 mc_size is the total size of the array that mc_existing points
454 at - this must be at least 256
460 /* how we translate the colours */
461 i_translate translate;
463 /* the error diffusion map to use if translate is mc_errdiff */
465 /* the following define the error diffusion values to use if
466 errdiff is ed_custom. ed_orig is the column on the top row that
467 represents the current
470 int ed_width, ed_height, ed_orig;
472 /* the amount of perturbation to use for translate is mc_perturb */
476 typedef struct i_gif_opts {
477 /* each image has a local color map */
480 /* images are interlaced */
483 /* time for which image is displayed
493 int user_input_count;
494 char *user_input_flags;
501 /* this is added to the color table when we make an image transparent */
504 /* image positions */
506 i_gif_pos *positions;
508 /* Netscape loop extension - number of loops */
511 /* should be eliminate unused colors? */
512 int eliminate_unused;
515 extern void quant_makemap(i_quantize *quant, i_img **imgs, int count);
516 extern i_palidx *quant_translate(i_quantize *quant, i_img *img);
517 extern void quant_transparent(i_quantize *quant, i_palidx *indices, i_img *img, i_palidx trans_index);
519 extern i_img *i_img_pal_new(int x, int y, int channels, int maxpal);
520 extern i_img *i_img_pal_new_low(i_img *im, int x, int y, int channels, int maxpal);
521 extern i_img *i_img_to_pal(i_img *src, i_quantize *quant);
522 extern i_img *i_img_to_rgb(i_img *src);
523 extern i_img *i_img_masked_new(i_img *targ, i_img *mask, int x, int y,
525 extern i_img *i_img_16_new(int x, int y, int ch);
526 extern i_img *i_img_16_new_low(i_img *im, int x, int y, int ch);
527 extern i_img *i_img_double_new(int x, int y, int ch);
528 extern i_img *i_img_double_new_low(i_img *im, int x, int y, int ch);
531 char * i_test_format_probe(io_glue *data, int length);
536 i_readjpeg_wiol(io_glue *ig, int length, char** iptc_itext, int *itlength);
537 undef_int i_writejpeg_wiol(i_img *im, io_glue *ig, int qfactor);
538 #endif /* HAVE_LIBJPEG */
541 i_img * i_readtiff_wiol(io_glue *ig, int length);
542 i_img ** i_readtiff_multi_wiol(io_glue *ig, int length, int *count);
543 undef_int i_writetiff_wiol(i_img *im, io_glue *ig);
544 undef_int i_writetiff_multi_wiol(io_glue *ig, i_img **imgs, int count);
545 undef_int i_writetiff_wiol_faxable(i_img *im, io_glue *ig, int fine);
546 undef_int i_writetiff_multi_wiol_faxable(io_glue *ig, i_img **imgs, int count, int fine);
548 #endif /* HAVE_LIBTIFF */
551 i_img *i_readpng_wiol(io_glue *ig, int length);
552 undef_int i_writepng_wiol(i_img *im, io_glue *ig);
553 #endif /* HAVE_LIBPNG */
556 i_img *i_readgif(int fd, int **colour_table, int *colours);
557 i_img *i_readgif_wiol(io_glue *ig, int **colour_table, int *colours);
558 i_img *i_readgif_scalar(char *data, int length, int **colour_table, int *colours);
559 i_img *i_readgif_callback(i_read_callback_t callback, char *userdata, int **colour_table, int *colours);
560 extern i_img **i_readgif_multi(int fd, int *count);
561 extern i_img **i_readgif_multi_scalar(char *data, int length, int *count);
562 extern i_img **i_readgif_multi_callback(i_read_callback_t callback, char *userdata, int *count);
563 extern i_img **i_readgif_multi_wiol(io_glue *ig, int *count);
564 undef_int i_writegif(i_img *im,int fd,int colors,int pixdev,int fixedlen,i_color fixed[]);
565 undef_int i_writegifmc(i_img *im,int fd,int colors);
566 undef_int i_writegifex(i_img *im,int fd);
567 undef_int i_writegif_gen(i_quantize *quant, int fd, i_img **imgs, int count);
568 undef_int i_writegif_callback(i_quantize *quant, i_write_callback_t cb, char *userdata, int maxbuffer, i_img **imgs, int count);
569 undef_int i_writegif_wiol(io_glue *ig, i_quantize *quant,
570 i_img **imgs, int count);
571 void i_qdist(i_img *im);
573 #endif /* HAVE_LIBGIF */
575 i_img * i_readraw_wiol(io_glue *ig, int x, int y, int datachannels, int storechannels, int intrl);
576 undef_int i_writeraw_wiol(i_img* im, io_glue *ig);
578 i_img * i_readpnm_wiol(io_glue *ig, int length);
579 undef_int i_writeppm_wiol(i_img *im, io_glue *ig);
581 extern int i_writebmp_wiol(i_img *im, io_glue *ig);
582 extern i_img *i_readbmp_wiol(io_glue *ig);
584 int tga_header_verify(unsigned char headbuf[18]);
586 i_img * i_readtga_wiol(io_glue *ig, int length);
587 undef_int i_writetga_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
589 i_img * i_readrgb_wiol(io_glue *ig, int length);
590 undef_int i_writergb_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
592 i_img * i_scaleaxis(i_img *im, float Value, int Axis);
593 i_img * i_scale_nn(i_img *im, float scx, float scy);
594 i_img * i_haar(i_img *im);
595 int i_count_colors(i_img *im,int maxc);
597 i_img * i_transform(i_img *im, int *opx,int opxl,int *opy,int opyl,double parm[],int parmlen);
600 i_img * i_transform2(int width, int height, int channels,
601 struct rm_op *ops, int ops_count,
602 double *n_regs, int n_regs_count,
603 i_color *c_regs, int c_regs_count,
604 i_img **in_imgs, int in_imgs_count);
608 void i_contrast(i_img *im, float intensity);
609 void i_hardinvert(i_img *im);
610 void i_noise(i_img *im, float amount, unsigned char type);
611 void i_bumpmap(i_img *im,i_img *bump,int channel,int light_x,int light_y,int strength);
612 void i_bumpmap_complex(i_img *im, i_img *bump, int channel, int tx, int ty, float Lx, float Ly,
613 float Lz, float cd, float cs, float n, i_color *Ia, i_color *Il, i_color *Is);
614 void i_postlevels(i_img *im,int levels);
615 void i_mosaic(i_img *im,int size);
616 void i_watermark(i_img *im,i_img *wmark,int tx,int ty,int pixdiff);
617 void i_autolevels(i_img *im,float lsat,float usat,float skew);
618 void i_radnoise(i_img *im,int xo,int yo,float rscale,float ascale);
619 void i_turbnoise(i_img *im,float xo,float yo,float scale);
620 void i_gradgen(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
621 void i_nearest_color(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
622 i_img *i_diff_image(i_img *im, i_img *im2, int mindist);
630 } i_fountain_seg_type;
638 double start, middle, end;
640 i_fountain_seg_type type;
641 i_fountain_color color;
665 void i_fountain(i_img *im, double xa, double ya, double xb, double yb,
666 i_fountain_type type, i_fountain_repeat repeat,
667 int combine, int super_sample, double ssample_param,
668 int count, i_fountain_seg *segs);
670 i_new_fill_fount(double xa, double ya, double xb, double yb,
671 i_fountain_type type, i_fountain_repeat repeat,
672 int combine, int super_sample, double ssample_param,
673 int count, i_fountain_seg *segs);
675 /* Debug only functions */
677 void malloc_state( void );
679 /* this is sort of obsolete now */
682 undef_int (*i_has_format)(char *frmt);
683 i_color*(*ICL_set)(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
684 void (*ICL_info)(i_color *cl);
686 i_img*(*i_img_new)( void );
687 i_img*(*i_img_empty)(i_img *im,int x,int y);
688 i_img*(*i_img_empty_ch)(i_img *im,int x,int y,int ch);
689 void(*i_img_exorcise)(i_img *im);
691 void(*i_img_info)(i_img *im,int *info);
693 void(*i_img_setmask)(i_img *im,int ch_mask);
694 int (*i_img_getmask)(i_img *im);
697 int (*i_ppix)(i_img *im,int x,int y,i_color *val);
698 int (*i_gpix)(i_img *im,int x,int y,i_color *val);
700 void(*i_box)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
701 void(*i_line)(i_img *im,int x1,int y1,int x2,int y2,i_color *val,int endp);
702 void(*i_arc)(i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
703 void(*i_copyto)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
704 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);
705 int(*i_rubthru)(i_img *im,i_img *src,int tx,int ty);
710 see error.c for documentation
711 the error information is currently global
718 typedef void (*i_error_cb)(int code, char const *msg);
719 typedef void (*i_failed_cb)(i_errmsg *msgs);
720 extern i_error_cb i_set_error_cb(i_error_cb);
721 extern i_failed_cb i_set_failed_cb(i_failed_cb);
722 extern void i_set_argv0(char const *);
723 extern int i_set_errors_fatal(int new_fatal);
724 extern i_errmsg *i_errors(void);
726 extern void i_push_error(int code, char const *msg);
727 extern void i_push_errorf(int code, char const *fmt, ...);
728 extern void i_push_errorvf(int code, char const *fmt, va_list);
729 extern void i_clear_error(void);
730 extern int i_failed(int code, char const *msg);
732 /* image tag processing */
733 extern void i_tags_new(i_img_tags *tags);
734 extern int i_tags_addn(i_img_tags *tags, char const *name, int code,
736 extern int i_tags_add(i_img_tags *tags, char const *name, int code,
737 char const *data, int size, int idata);
738 extern void i_tags_destroy(i_img_tags *tags);
739 extern int i_tags_find(i_img_tags *tags, char const *name, int start,
741 extern int i_tags_findn(i_img_tags *tags, int code, int start, int *entry);
742 extern int i_tags_delete(i_img_tags *tags, int entry);
743 extern int i_tags_delbyname(i_img_tags *tags, char const *name);
744 extern int i_tags_delbycode(i_img_tags *tags, int code);
745 extern int i_tags_get_float(i_img_tags *tags, char const *name, int code,
747 extern int i_tags_set_float(i_img_tags *tags, char const *name, int code,
749 extern int i_tags_get_int(i_img_tags *tags, char const *name, int code,
751 extern int i_tags_get_string(i_img_tags *tags, char const *name, int code,
752 char *value, size_t value_size);
753 extern int i_tags_get_color(i_img_tags *tags, char const *name, int code,
755 extern int i_tags_set_color(i_img_tags *tags, char const *name, int code,
756 i_color const *value);
757 extern void i_tags_print(i_img_tags *tags);