24 #define PI 3.14159265358979323846
28 #define MAXINT 2147483647
31 #include "datatypes.h"
33 undef_int i_has_format(char *frmt);
35 /* constructors and destructors */
37 i_color *ICL_new_internal( unsigned char r,unsigned char g,unsigned char b,unsigned char a);
38 i_color *ICL_set_internal(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
39 void ICL_info (i_color *cl);
40 void ICL_DESTROY (i_color *cl);
41 void ICL_add (i_color *dst, i_color *src, int ch);
43 extern i_fcolor *i_fcolor_new(double r, double g, double b, double a);
44 extern void i_fcolor_destroy(i_fcolor *cl);
46 extern void i_rgb_to_hsvf(i_fcolor *color);
47 extern void i_hsv_to_rgbf(i_fcolor *color);
48 extern void i_rgb_to_hsv(i_color *color);
49 extern void i_hsv_to_rgb(i_color *color);
51 i_img *IIM_new(int x,int y,int ch);
52 void IIM_DESTROY(i_img *im);
53 i_img *i_img_new( void );
54 i_img *i_img_empty(i_img *im,int x,int y);
55 i_img *i_img_empty_ch(i_img *im,int x,int y,int ch);
56 void i_img_exorcise(i_img *im);
57 void i_img_destroy(i_img *im);
59 void i_img_info(i_img *im,int *info);
61 extern i_img *i_sametype(i_img *im, int xsize, int ysize);
62 extern i_img *i_sametype_chans(i_img *im, int xsize, int ysize, int channels);
64 i_img *i_img_pal_new(int x, int y, int ch, int maxpal);
66 /* Image feature settings */
68 void i_img_setmask (i_img *im,int ch_mask);
69 int i_img_getmask (i_img *im);
70 int i_img_getchannels(i_img *im);
75 int i_ppix(i_img *im,int x,int y,i_color *val);
76 int i_gpix(i_img *im,int x,int y,i_color *val);
77 int i_ppixf(i_img *im,int x,int y,i_color *val);
78 int i_gpixf(i_img *im,int x,int y,i_color *val);
81 #define i_ppix(im, x, y, val) (((im)->i_f_ppix)((im), (x), (y), (val)))
82 #define i_gpix(im, x, y, val) (((im)->i_f_gpix)((im), (x), (y), (val)))
83 #define i_ppixf(im, x, y, val) (((im)->i_f_ppixf)((im), (x), (y), (val)))
84 #define i_gpixf(im, x, y, val) (((im)->i_f_gpixf)((im), (x), (y), (val)))
87 int i_ppix_d(i_img *im,int x,int y,i_color *val);
88 int i_gpix_d(i_img *im,int x,int y,i_color *val);
89 int i_plin_d(i_img *im,int l, int r, int y, i_color *val);
90 int i_glin_d(i_img *im,int l, int r, int y, i_color *val);
93 #define i_plin(im, l, r, y, val) (((im)->i_f_plin)(im, l, r, y, val))
94 #define i_glin(im, l, r, y, val) (((im)->i_f_glin)(im, l, r, y, val))
95 #define i_plinf(im, l, r, y, val) (((im)->i_f_plinf)(im, l, r, y, val))
96 #define i_glinf(im, l, r, y, val) (((im)->i_f_glinf)(im, l, r, y, val))
98 #define i_gsamp(im, l, r, y, samps, chans, count) \
99 (((im)->i_f_gsamp)((im), (l), (r), (y), (samps), (chans), (count)))
100 #define i_gsampf(im, l, r, y, samps, chans, count) \
101 (((im)->i_f_gsampf)((im), (l), (r), (y), (samps), (chans), (count)))
103 #define i_psamp(im, l, r, y, samps, chans, count) \
104 (((im)->i_f_gsamp)((im), (l), (r), (y), (samps), (chans), (count)))
105 #define i_psampf(im, l, r, y, samps, chans, count) \
106 (((im)->i_f_gsampf)((im), (l), (r), (y), (samps), (chans), (count)))
111 #define i_findcolor(im, color, entry) \
112 (((im)->i_f_findcolor) ? ((im)->i_f_findcolor)((im), (color), (entry)) : 0)
114 #define i_gpal(im, l, r, y, vals) \
115 (((im)->i_f_gpal) ? ((im)->i_f_gpal)((im), (l), (r), (y), (vals)) : 0)
116 #define i_ppal(im, l, r, y, vals) \
117 (((im)->i_f_ppal) ? ((im)->i_f_ppal)((im), (l), (r), (y), (vals)) : 0)
118 #define i_addcolors(im, colors, count) \
119 (((im)->i_f_addcolors) ? ((im)->i_f_addcolors)((im), (colors), (count)) : -1)
120 #define i_getcolors(im, index, color, count) \
121 (((im)->i_f_getcolors) ? \
122 ((im)->i_f_getcolors)((im), (index), (color), (count)) : 0)
123 #define i_setcolors(im, index, color, count) \
124 (((im)->i_f_setcolors) ? \
125 ((im)->i_f_setcolors)((im), (index), (color), (count)) : 0)
126 #define i_colorcount(im) \
127 (((im)->i_f_colorcount) ? ((im)->i_f_colorcount)(im) : -1)
128 #define i_maxcolors(im) \
129 (((im)->i_f_maxcolors) ? ((im)->i_f_maxcolors)(im) : -1)
130 #define i_findcolor(im, color, entry) \
131 (((im)->i_f_findcolor) ? ((im)->i_f_findcolor)((im), (color), (entry)) : 0)
133 #define i_img_virtual(im) ((im)->virtual)
134 #define i_img_type(im) ((im)->type)
135 #define i_img_bits(im) ((im)->bits)
140 typedef void (*i_fill_with_color_f)
141 (struct i_fill_tag *fill, int x, int y, int width, int channels,
143 typedef void (*i_fill_with_fcolor_f)
144 (struct i_fill_tag *fill, int x, int y, int width, int channels,
146 typedef void (*i_fill_destroy_f)(struct i_fill_tag *fill);
147 typedef void (*i_fill_combine_f)(i_color *out, i_color *in, int channels,
149 typedef void (*i_fill_combinef_f)(i_fcolor *out, i_fcolor *in, int channels,
153 typedef struct i_fill_tag
155 /* called for 8-bit/sample image (and maybe lower) */
156 /* this may be NULL, if so call fill_with_fcolor */
157 i_fill_with_color_f fill_with_color;
159 /* called for other sample sizes */
160 /* this must be non-NULL */
161 i_fill_with_fcolor_f fill_with_fcolor;
163 /* called if non-NULL to release any extra resources */
164 i_fill_destroy_f destroy;
166 /* if non-zero the caller will fill data with the original data
168 i_fill_combine_f combine;
169 i_fill_combinef_f combinef;
188 extern i_fill_t *i_new_fill_solidf(i_fcolor *c, int combine);
189 extern i_fill_t *i_new_fill_solid(i_color *c, int combine);
191 i_new_fill_hatch(i_color *fg, i_color *bg, int combine, int hatch,
192 unsigned char *cust_hatch, int dx, int dy);
194 i_new_fill_hatchf(i_fcolor *fg, i_fcolor *bg, int combine, int hatch,
195 unsigned char *cust_hatch, int dx, int dy);
197 i_new_fill_image(i_img *im, double *matrix, int xoff, int yoff, int combine);
198 extern void i_fill_destroy(i_fill_t *fill);
200 float i_gpix_pch(i_img *im,int x,int y,int ch);
202 /* functions for drawing primitives */
204 void i_box (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
205 void i_box_filled (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
206 void i_box_cfill(i_img *im, int x1, int y1, int x2, int y2, i_fill_t *fill);
207 void i_line (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
208 void i_line_aa (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
209 void i_arc (i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
210 void i_arc_cfill(i_img *im,int x,int y,float rad,float d1,float d2,i_fill_t *fill);
211 void i_circle_aa (i_img *im,float x, float y,float rad,i_color *val);
212 void i_copyto (i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
213 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);
214 void i_copy (i_img *im,i_img *src);
215 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);
218 undef_int i_flipxy (i_img *im, int direction);
219 extern i_img *i_rotate90(i_img *im, int degrees);
220 extern i_img *i_rotate_exact(i_img *im, double amount);
221 extern i_img *i_rotate_exact_bg(i_img *im, double amount, i_color *backp, i_fcolor *fbackp);
222 extern i_img *i_matrix_transform(i_img *im, int xsize, int ysize, double *matrix);
223 extern i_img *i_matrix_transform_bg(i_img *im, int xsize, int ysize, double *matrix, i_color *backp, i_fcolor *fbackp);
225 void i_bezier_multi(i_img *im,int l,double *x,double *y,i_color *val);
226 void i_poly_aa (i_img *im,int l,double *x,double *y,i_color *val);
227 void i_poly_aa_cfill(i_img *im,int l,double *x,double *y,i_fill_t *fill);
229 undef_int i_flood_fill (i_img *im,int seedx,int seedy,i_color *dcol);
230 undef_int i_flood_cfill(i_img *im, int seedx, int seedy, i_fill_t *fill);
233 /* image processing functions */
235 void i_gaussian (i_img *im,float stdev);
236 void i_conv (i_img *im,float *coeff,int len);
237 void i_unsharp_mask(i_img *im, double stddev, double scale);
239 /* colour manipulation */
240 extern int i_convert(i_img *im, i_img *src, float *coeff, int outchan, int inchan);
241 extern void i_map(i_img *im, unsigned char (*maps)[256], unsigned int mask);
243 float i_img_diff (i_img *im1,i_img *im2);
247 undef_int i_init_fonts( int t1log );
250 describes an axis of a MM font.
251 Modelled on FT2's FT_MM_Axis.
252 It would be nice to have a default entry too, but FT2
255 typedef struct i_font_mm_axis_tag {
261 #define IM_FONT_MM_MAX_AXES 4
264 multiple master information for a font, if any
265 modelled on FT2's FT_Multi_Master.
267 typedef struct i_font_mm_tag {
269 int num_designs; /* provided but not necessarily useful */
270 i_font_mm_axis axis[IM_FONT_MM_MAX_AXES];
275 undef_int i_init_t1( int t1log );
276 int i_t1_new( char *pfb, char *afm );
277 int i_t1_destroy( int font_id );
278 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 );
279 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 );
280 int i_t1_bbox( int fontnum, float point, char *str, int len, int cords[6], int utf8, char const *flags );
281 void i_t1_set_aa( int st );
282 void close_t1( void );
283 int i_t1_has_chars(int font_num, char const *text, int len, int utf8, char *out);
284 extern int i_t1_face_name(int font_num, char *name_buf, size_t name_buf_size);
285 extern int i_t1_glyph_name(int font_num, unsigned long ch, char *name_buf,
286 size_t name_buf_size);
291 struct TT_Fonthandle_;
293 typedef struct TT_Fonthandle_ TT_Fonthandle;
295 undef_int i_init_tt( void );
296 TT_Fonthandle* i_tt_new(char *fontname);
297 void i_tt_destroy( TT_Fonthandle *handle );
298 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, int align);
299 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, int align);
300 undef_int i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6], int utf8);
301 int i_tt_has_chars(TT_Fonthandle *handle, char const *text, int len, int utf8, char *out);
302 void i_tt_dump_names(TT_Fonthandle *handle);
303 int i_tt_face_name(TT_Fonthandle *handle, char *name_buf,
304 size_t name_buf_size);
305 int i_tt_glyph_name(TT_Fonthandle *handle, unsigned long ch, char *name_buf,
306 size_t name_buf_size);
308 #endif /* End of freetype headers */
312 typedef struct FT2_Fonthandle FT2_Fonthandle;
313 extern int i_ft2_init(void);
314 extern FT2_Fonthandle * i_ft2_new(char *name, int index);
315 extern void i_ft2_destroy(FT2_Fonthandle *handle);
316 extern int i_ft2_setdpi(FT2_Fonthandle *handle, int xdpi, int ydpi);
317 extern int i_ft2_getdpi(FT2_Fonthandle *handle, int *xdpi, int *ydpi);
318 extern int i_ft2_settransform(FT2_Fonthandle *handle, double *matrix);
319 extern int i_ft2_sethinting(FT2_Fonthandle *handle, int hinting);
320 extern int i_ft2_bbox(FT2_Fonthandle *handle, double cheight, double cwidth,
321 char const *text, int len, int *bbox, int utf8);
322 extern int i_ft2_bbox_r(FT2_Fonthandle *handle, double cheight, double cwidth,
323 char const *text, int len, int vlayout, int utf8, int *bbox);
324 extern int i_ft2_text(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
325 i_color *cl, double cheight, double cwidth,
326 char const *text, int len, int align, int aa,
327 int vlayout, int utf8);
328 extern int i_ft2_cp(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
329 int channel, double cheight, double cwidth,
330 char const *text, int len, int align, int aa, int vlayout,
332 extern int i_ft2_has_chars(FT2_Fonthandle *handle, char const *text, int len,
333 int utf8, char *work);
334 extern int i_ft2_face_name(FT2_Fonthandle *handle, char *name_buf,
335 size_t name_buf_size);
336 extern int i_ft2_can_face_name(void);
337 extern int i_ft2_glyph_name(FT2_Fonthandle *handle, unsigned long ch,
338 char *name_buf, size_t name_buf_size,
340 extern int i_ft2_can_do_glyph_names(void);
341 extern int i_ft2_face_has_glyph_names(FT2_Fonthandle *handle);
343 extern int i_ft2_get_multiple_masters(FT2_Fonthandle *handle,
346 i_ft2_is_multiple_master(FT2_Fonthandle *handle);
348 i_ft2_set_mm_coords(FT2_Fonthandle *handle, int coord_count, long *coords);
353 extern int i_wf_bbox(char *face, int size, char *text, int length, int *bbox);
354 extern int i_wf_text(char *face, i_img *im, int tx, int ty, i_color *cl,
355 int size, char *text, int len, int align, int aa);
356 extern int i_wf_cp(char *face, i_img *im, int tx, int ty, int channel,
357 int size, char *text, int len, int align, int aa);
358 extern int i_wf_addfont(char const *file);
362 /* functions for reading and writing formats */
364 /* general reader callback
365 userdata - data the user passed into the reader
366 buffer - the buffer to fill with data
367 need - the amount of data needed
368 want - the amount of space we have to store data
369 fill buffer and return the number of bytes read, 0 for eof, -1 for error
372 typedef int (*i_read_callback_t)(char *userdata, char *buffer, int need,
375 /* i_gen_reader() translates the low-level requests from whatever library
376 into buffered requests.
377 but the called function can always bypass buffering by only ever
378 reading I<need> bytes.
380 #define CBBUFSIZ 4096
383 i_read_callback_t cb;
385 char buffer[CBBUFSIZ];
390 extern int i_gen_reader(i_gen_read_data *info, char *buffer, int need);
391 extern i_gen_read_data *i_gen_read_data_new(i_read_callback_t cb, char *userdata);
392 extern void i_free_gen_read_data(i_gen_read_data *);
394 /* general writer callback
395 userdata - the data the user passed into the writer
396 data - the data to write
397 data_size - the number of bytes to write
398 write the data, return non-zero on success, zero on failure.
400 typedef int (*i_write_callback_t)(char *userdata, char const *data, int size);
403 i_write_callback_t cb;
405 char buffer[CBBUFSIZ];
410 extern int i_gen_writer(i_gen_write_data *info, char const *data, int size);
411 extern i_gen_write_data *i_gen_write_data_new(i_write_callback_t cb, char *userdata, int maxlength);
412 extern int i_free_gen_write_data(i_gen_write_data *, int flush);
414 /* transparency handling for quantized output */
415 typedef enum i_transp_tag {
416 tr_none, /* ignore any alpha channel */
417 tr_threshold, /* threshold the transparency - uses tr_threshold */
418 tr_errdiff, /* error diffusion */
419 tr_ordered /* an ordered dither */
422 /* controls how we build the colour map */
423 typedef enum i_make_colors_tag {
424 mc_none, /* user supplied colour map only */
425 mc_web_map, /* Use the 216 colour web colour map */
426 mc_addi, /* Addi's algorithm */
427 mc_median_cut, /* median cut - similar to giflib, hopefully */
428 mc_mask = 0xFF /* (mask for generator) */
431 /* controls how we translate the colours */
432 typedef enum i_translate_tag {
433 pt_giflib, /* get gif lib to do it (ignores make_colours) */
434 pt_closest, /* just use the closest match within the hashbox */
435 pt_perturb, /* randomly perturb the data - uses perturb_size*/
436 pt_errdiff /* error diffusion dither - uses errdiff */
439 /* Which error diffusion map to use */
440 typedef enum i_errdiff_tag {
441 ed_floyd, /* floyd-steinberg */
442 ed_jarvis, /* Jarvis, Judice and Ninke */
443 ed_stucki, /* Stucki */
444 ed_custom, /* the map found in ed_map|width|height|orig */
445 ed_mask = 0xFF, /* mask to get the map */
446 ed_bidir = 0x100 /* change direction for each row */
449 /* which ordered dither map to use
450 currently only available for transparency
451 I don't know of a way to do ordered dither of an image against some
454 typedef enum i_ord_dith_tag
456 od_random, /* sort of random */
457 od_dot8, /* large dot */
461 od_slashline, /* / line dither */
462 od_backline, /* \ line dither */
463 od_tiny, /* small checkerbox */
464 od_custom /* custom 8x8 map */
467 typedef struct i_gif_pos_tag {
471 /* passed into i_writegif_gen() to control quantization */
472 typedef struct i_quantize_tag {
473 /* how to handle transparency */
475 /* the threshold at which to make pixels opaque */
477 i_errdiff tr_errdiff;
478 i_ord_dith tr_orddith;
479 unsigned char tr_custom[64];
481 /* how to make the colour map */
482 i_make_colors make_colors;
484 /* any existing colours
485 mc_existing is an existing colour table
486 mc_count is the number of existing colours
487 mc_size is the total size of the array that mc_existing points
488 at - this must be at least 256
494 /* how we translate the colours */
495 i_translate translate;
497 /* the error diffusion map to use if translate is mc_errdiff */
499 /* the following define the error diffusion values to use if
500 errdiff is ed_custom. ed_orig is the column on the top row that
501 represents the current
504 int ed_width, ed_height, ed_orig;
506 /* the amount of perturbation to use for translate is mc_perturb */
510 typedef struct i_gif_opts {
511 /* each image has a local color map */
514 /* images are interlaced */
517 /* time for which image is displayed
527 int user_input_count;
528 char *user_input_flags;
535 /* this is added to the color table when we make an image transparent */
538 /* image positions */
540 i_gif_pos *positions;
542 /* Netscape loop extension - number of loops */
545 /* should be eliminate unused colors? */
546 int eliminate_unused;
549 extern void quant_makemap(i_quantize *quant, i_img **imgs, int count);
550 extern i_palidx *quant_translate(i_quantize *quant, i_img *img);
551 extern void quant_transparent(i_quantize *quant, i_palidx *indices, i_img *img, i_palidx trans_index);
553 extern i_img *i_img_pal_new(int x, int y, int channels, int maxpal);
554 extern i_img *i_img_pal_new_low(i_img *im, int x, int y, int channels, int maxpal);
555 extern i_img *i_img_to_pal(i_img *src, i_quantize *quant);
556 extern i_img *i_img_to_rgb(i_img *src);
557 extern i_img *i_img_masked_new(i_img *targ, i_img *mask, int x, int y,
559 extern i_img *i_img_16_new(int x, int y, int ch);
560 extern i_img *i_img_16_new_low(i_img *im, int x, int y, int ch);
561 extern i_img *i_img_double_new(int x, int y, int ch);
562 extern i_img *i_img_double_new_low(i_img *im, int x, int y, int ch);
565 char * i_test_format_probe(io_glue *data, int length);
570 i_readjpeg_wiol(io_glue *ig, int length, char** iptc_itext, int *itlength);
571 undef_int i_writejpeg_wiol(i_img *im, io_glue *ig, int qfactor);
572 #endif /* HAVE_LIBJPEG */
575 i_img * i_readtiff_wiol(io_glue *ig, int length);
576 i_img ** i_readtiff_multi_wiol(io_glue *ig, int length, int *count);
577 undef_int i_writetiff_wiol(i_img *im, io_glue *ig);
578 undef_int i_writetiff_multi_wiol(io_glue *ig, i_img **imgs, int count);
579 undef_int i_writetiff_wiol_faxable(i_img *im, io_glue *ig, int fine);
580 undef_int i_writetiff_multi_wiol_faxable(io_glue *ig, i_img **imgs, int count, int fine);
582 #endif /* HAVE_LIBTIFF */
585 i_img *i_readpng_wiol(io_glue *ig, int length);
586 undef_int i_writepng_wiol(i_img *im, io_glue *ig);
587 #endif /* HAVE_LIBPNG */
590 i_img *i_readgif(int fd, int **colour_table, int *colours);
591 i_img *i_readgif_wiol(io_glue *ig, int **colour_table, int *colours);
592 i_img *i_readgif_scalar(char *data, int length, int **colour_table, int *colours);
593 i_img *i_readgif_callback(i_read_callback_t callback, char *userdata, int **colour_table, int *colours);
594 extern i_img **i_readgif_multi(int fd, int *count);
595 extern i_img **i_readgif_multi_scalar(char *data, int length, int *count);
596 extern i_img **i_readgif_multi_callback(i_read_callback_t callback, char *userdata, int *count);
597 extern i_img **i_readgif_multi_wiol(io_glue *ig, int *count);
598 undef_int i_writegif(i_img *im,int fd,int colors,int pixdev,int fixedlen,i_color fixed[]);
599 undef_int i_writegifmc(i_img *im,int fd,int colors);
600 undef_int i_writegifex(i_img *im,int fd);
601 undef_int i_writegif_gen(i_quantize *quant, int fd, i_img **imgs, int count);
602 undef_int i_writegif_callback(i_quantize *quant, i_write_callback_t cb, char *userdata, int maxbuffer, i_img **imgs, int count);
603 undef_int i_writegif_wiol(io_glue *ig, i_quantize *quant,
604 i_img **imgs, int count);
605 void i_qdist(i_img *im);
607 #endif /* HAVE_LIBGIF */
609 i_img * i_readraw_wiol(io_glue *ig, int x, int y, int datachannels, int storechannels, int intrl);
610 undef_int i_writeraw_wiol(i_img* im, io_glue *ig);
612 i_img * i_readpnm_wiol(io_glue *ig, int length);
613 undef_int i_writeppm_wiol(i_img *im, io_glue *ig);
615 extern int i_writebmp_wiol(i_img *im, io_glue *ig);
616 extern i_img *i_readbmp_wiol(io_glue *ig);
618 int tga_header_verify(unsigned char headbuf[18]);
620 i_img * i_readtga_wiol(io_glue *ig, int length);
621 undef_int i_writetga_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
623 i_img * i_readrgb_wiol(io_glue *ig, int length);
624 undef_int i_writergb_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
626 i_img * i_scaleaxis(i_img *im, float Value, int Axis);
627 i_img * i_scale_nn(i_img *im, float scx, float scy);
628 i_img * i_haar(i_img *im);
629 int i_count_colors(i_img *im,int maxc);
631 i_img * i_transform(i_img *im, int *opx,int opxl,int *opy,int opyl,double parm[],int parmlen);
634 i_img * i_transform2(int width, int height, int channels,
635 struct rm_op *ops, int ops_count,
636 double *n_regs, int n_regs_count,
637 i_color *c_regs, int c_regs_count,
638 i_img **in_imgs, int in_imgs_count);
642 void i_contrast(i_img *im, float intensity);
643 void i_hardinvert(i_img *im);
644 void i_noise(i_img *im, float amount, unsigned char type);
645 void i_bumpmap(i_img *im,i_img *bump,int channel,int light_x,int light_y,int strength);
646 void i_bumpmap_complex(i_img *im, i_img *bump, int channel, int tx, int ty, float Lx, float Ly,
647 float Lz, float cd, float cs, float n, i_color *Ia, i_color *Il, i_color *Is);
648 void i_postlevels(i_img *im,int levels);
649 void i_mosaic(i_img *im,int size);
650 void i_watermark(i_img *im,i_img *wmark,int tx,int ty,int pixdiff);
651 void i_autolevels(i_img *im,float lsat,float usat,float skew);
652 void i_radnoise(i_img *im,int xo,int yo,float rscale,float ascale);
653 void i_turbnoise(i_img *im,float xo,float yo,float scale);
654 void i_gradgen(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
655 void i_nearest_color(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
656 i_img *i_diff_image(i_img *im, i_img *im2, int mindist);
664 } i_fountain_seg_type;
672 double start, middle, end;
674 i_fountain_seg_type type;
675 i_fountain_color color;
699 void i_fountain(i_img *im, double xa, double ya, double xb, double yb,
700 i_fountain_type type, i_fountain_repeat repeat,
701 int combine, int super_sample, double ssample_param,
702 int count, i_fountain_seg *segs);
704 i_new_fill_fount(double xa, double ya, double xb, double yb,
705 i_fountain_type type, i_fountain_repeat repeat,
706 int combine, int super_sample, double ssample_param,
707 int count, i_fountain_seg *segs);
709 /* Debug only functions */
711 void malloc_state( void );
713 /* this is sort of obsolete now */
716 undef_int (*i_has_format)(char *frmt);
717 i_color*(*ICL_set)(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
718 void (*ICL_info)(i_color *cl);
720 i_img*(*i_img_new)( void );
721 i_img*(*i_img_empty)(i_img *im,int x,int y);
722 i_img*(*i_img_empty_ch)(i_img *im,int x,int y,int ch);
723 void(*i_img_exorcise)(i_img *im);
725 void(*i_img_info)(i_img *im,int *info);
727 void(*i_img_setmask)(i_img *im,int ch_mask);
728 int (*i_img_getmask)(i_img *im);
731 int (*i_ppix)(i_img *im,int x,int y,i_color *val);
732 int (*i_gpix)(i_img *im,int x,int y,i_color *val);
734 void(*i_box)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
735 void(*i_line)(i_img *im,int x1,int y1,int x2,int y2,i_color *val,int endp);
736 void(*i_arc)(i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
737 void(*i_copyto)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
738 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);
739 int(*i_rubthru)(i_img *im,i_img *src,int tx,int ty);
744 see error.c for documentation
745 the error information is currently global
752 typedef void (*i_error_cb)(int code, char const *msg);
753 typedef void (*i_failed_cb)(i_errmsg *msgs);
754 extern i_error_cb i_set_error_cb(i_error_cb);
755 extern i_failed_cb i_set_failed_cb(i_failed_cb);
756 extern void i_set_argv0(char const *);
757 extern int i_set_errors_fatal(int new_fatal);
758 extern i_errmsg *i_errors(void);
760 extern void i_push_error(int code, char const *msg);
761 extern void i_push_errorf(int code, char const *fmt, ...);
762 extern void i_push_errorvf(int code, char const *fmt, va_list);
763 extern void i_clear_error(void);
764 extern int i_failed(int code, char const *msg);
766 /* image tag processing */
767 extern void i_tags_new(i_img_tags *tags);
768 extern int i_tags_addn(i_img_tags *tags, char const *name, int code,
770 extern int i_tags_add(i_img_tags *tags, char const *name, int code,
771 char const *data, int size, int idata);
772 extern void i_tags_destroy(i_img_tags *tags);
773 extern int i_tags_find(i_img_tags *tags, char const *name, int start,
775 extern int i_tags_findn(i_img_tags *tags, int code, int start, int *entry);
776 extern int i_tags_delete(i_img_tags *tags, int entry);
777 extern int i_tags_delbyname(i_img_tags *tags, char const *name);
778 extern int i_tags_delbycode(i_img_tags *tags, int code);
779 extern int i_tags_get_float(i_img_tags *tags, char const *name, int code,
781 extern int i_tags_set_float(i_img_tags *tags, char const *name, int code,
783 extern int i_tags_set_float2(i_img_tags *tags, char const *name, int code,
784 double value, int places);
785 extern int i_tags_get_int(i_img_tags *tags, char const *name, int code,
787 extern int i_tags_get_string(i_img_tags *tags, char const *name, int code,
788 char *value, size_t value_size);
789 extern int i_tags_get_color(i_img_tags *tags, char const *name, int code,
791 extern int i_tags_set_color(i_img_tags *tags, char const *name, int code,
792 i_color const *value);
793 extern void i_tags_print(i_img_tags *tags);
795 /* image file limits */
797 i_set_image_file_limits(int width, int height, int bytes);
799 i_get_image_file_limits(int *width, int *height, int *bytes);