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);
65 int i_plin_d(i_img *im,int l, int r, int y, i_color *val);
66 int i_glin_d(i_img *im,int l, int r, int y, i_color *val);
68 #define i_plin(im, l, r, y, val) (((im)->i_f_plin)(im, l, r, y, val))
69 #define i_glin(im, l, r, y, val) (((im)->i_f_glin)(im, l, r, y, val))
71 float i_gpix_pch(i_img *im,int x,int y,int ch);
73 /* functions for drawing primitives */
75 void i_box (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
76 void i_box_filled (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
77 void i_draw (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
78 void i_line_aa (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
79 void i_arc (i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
80 void i_circle_aa (i_img *im,float x, float y,float rad,i_color *val);
81 void i_copyto (i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
82 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);
83 void i_copy (i_img *im,i_img *src);
84 void i_rubthru (i_img *im,i_img *src,int tx,int ty);
86 undef_int i_flipxy (i_img *im, int direction);
90 void i_bezier_multi(i_img *im,int l,double *x,double *y,i_color *val);
91 void i_poly_aa (i_img *im,int l,double *x,double *y,i_color *val);
93 void i_flood_fill (i_img *im,int seedx,int seedy,i_color *dcol);
95 /* image processing functions */
97 void i_gaussian (i_img *im,float stdev);
98 void i_conv (i_img *im,float *coeff,int len);
100 /* colour manipulation */
101 extern int i_convert(i_img *im, i_img *src, float *coeff, int outchan, int inchan);
103 float i_img_diff (i_img *im1,i_img *im2);
107 undef_int i_init_fonts( void );
112 undef_int init_t1( void );
113 int i_t1_new( char *pfb, char *afm );
114 int i_t1_destroy( int font_id );
115 undef_int i_t1_cp( i_img *im, int xb, int yb, int channel, int fontnum, float points, char* str, int len, int align );
116 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 );
117 void i_t1_bbox( int fontnum, float point, char *str, int len, int cords[6] );
118 void i_t1_set_aa( int st );
119 void close_t1( void );
125 #include <freetype.h>
128 struct TT_Instancehandle_ {
129 TT_Instance instance;
130 TT_Instance_Metrics imetrics;
131 TT_Glyph_Metrics gmetrics[256];
132 TT_Glyph glyphs[256];
138 typedef struct TT_Instancehandle_ TT_Instancehandle;
140 struct TT_Fonthandle_ {
142 TT_Face_Properties properties;
143 TT_Instancehandle instanceh[TT_CHC];
147 typedef struct TT_Fonthandle_ TT_Fonthandle;
151 undef_int init_tt( void );
152 TT_Fonthandle* i_tt_new(char *fontname);
153 void i_tt_destroy( TT_Fonthandle *handle );
154 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);
155 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);
156 undef_int i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6]);
159 #endif /* End of freetype headers */
167 /* functions for reading and writing formats */
169 /* general reader callback
170 userdata - data the user passed into the reader
171 buffer - the buffer to fill with data
172 need - the amount of data needed
173 want - the amount of space we have to store data
174 fill buffer and return the number of bytes read, 0 for eof, -1 for error
177 typedef int (*i_read_callback_t)(char *userdata, char *buffer, int need,
180 /* i_gen_reader() translates the low-level requests from whatever library
181 into buffered requests.
182 but the called function can always bypass buffering by only ever
183 reading I<need> bytes.
185 #define CBBUFSIZ 4096
188 i_read_callback_t cb;
190 char buffer[CBBUFSIZ];
195 extern int i_gen_reader(i_gen_read_data *info, char *buffer, int need);
196 extern i_gen_read_data *i_gen_read_data_new(i_read_callback_t cb, char *userdata);
197 extern void free_gen_read_data(i_gen_read_data *);
199 /* general writer callback
200 userdata - the data the user passed into the writer
201 data - the data to write
202 data_size - the number of bytes to write
203 write the data, return non-zero on success, zero on failure.
205 typedef int (*i_write_callback_t)(char *userdata, char const *data, int size);
208 i_write_callback_t cb;
210 char buffer[CBBUFSIZ];
215 extern int i_gen_writer(i_gen_write_data *info, char const *data, int size);
216 extern i_gen_write_data *i_gen_write_data_new(i_write_callback_t cb, char *userdata, int maxlength);
217 extern int free_gen_write_data(i_gen_write_data *, int flush);
219 /* transparency handling for quantized output */
220 typedef enum i_transp_tag {
221 tr_none, /* ignore any alpha channel */
222 tr_threshold, /* threshold the transparency - uses tr_threshold */
223 tr_errdiff, /* error diffusion */
224 tr_ordered /* an ordered dither */
227 /* controls how we build the colour map */
228 typedef enum i_make_colors_tag {
229 mc_none, /* user supplied colour map only */
230 mc_web_map, /* Use the 216 colour web colour map */
231 mc_addi, /* Addi's algorithm */
232 mc_mask = 0xFF /* (mask for generator) */
235 /* controls how we translate the colours */
236 typedef enum i_translate_tag {
237 pt_giflib, /* get gif lib to do it (ignores make_colours) */
238 pt_closest, /* just use the closest match within the hashbox */
239 pt_perturb, /* randomly perturb the data - uses perturb_size*/
240 pt_errdiff /* error diffusion dither - uses errdiff */
243 /* Which error diffusion map to use */
244 typedef enum i_errdiff_tag {
245 ed_floyd, /* floyd-steinberg */
246 ed_jarvis, /* Jarvis, Judice and Ninke */
247 ed_stucki, /* Stucki */
248 ed_custom, /* the map found in ed_map|width|height|orig */
249 ed_mask = 0xFF, /* mask to get the map */
250 ed_bidir = 0x100 /* change direction for each row */
253 /* which ordered dither map to use
254 currently only available for transparency
255 I don't know of a way to do ordered dither of an image against some
258 typedef enum i_ord_dith_tag
260 od_random, /* sort of random */
261 od_dot8, /* large dot */
265 od_slashline, /* / line dither */
266 od_backline, /* \ line dither */
267 od_tiny, /* small checkerbox */
268 od_custom /* custom 8x8 map */
271 typedef struct i_gif_pos_tag {
275 /* passed into i_writegif_gen() to control quantization */
276 typedef struct i_quantize_tag {
277 /* how to handle transparency */
279 /* the threshold at which to make pixels opaque */
281 i_errdiff tr_errdiff;
282 i_ord_dith tr_orddith;
283 unsigned char tr_custom[64];
285 /* how to make the colour map */
286 i_make_colors make_colors;
288 /* any existing colours
289 mc_existing is an existing colour table
290 mc_count is the number of existing colours
291 mc_size is the total size of the array that mc_existing points
292 at - this must be at least 256
298 /* how we translate the colours */
299 i_translate translate;
301 /* the error diffusion map to use if translate is mc_errdiff */
303 /* the following define the error diffusion values to use if
304 errdiff is ed_custom. ed_orig is the column on the top row that
305 represents the current
308 int ed_width, ed_height, ed_orig;
310 /* the amount of perturbation to use for translate is mc_perturb */
314 typedef struct i_gif_opts {
315 /* each image has a local color map */
318 /* images are interlaced */
321 /* time for which image is displayed
331 int user_input_count;
332 char *user_input_flags;
339 /* this is added to the color table when we make an image transparent */
342 /* image positions */
344 i_gif_pos *positions;
346 /* Netscape loop extension - number of loops */
350 extern void quant_makemap(i_quantize *quant, i_img **imgs, int count);
351 extern i_palidx *quant_translate(i_quantize *quant, i_img *img);
352 extern void quant_transparent(i_quantize *quant, i_palidx *indices, i_img *img, i_palidx trans_index);
355 i_img* i_readjpeg(int fd,char** iptc_itext,int *tlength);
356 i_img* i_readjpeg_scalar(char *data, int length,char** iptc_itext,int *itlength);
357 i_img* i_readjpeg_wiol(io_glue *ig, int length, char** iptc_itext, int *itlength);
359 i_img* i_readjpeg_extra2(int fd,char** iptc_itext);
360 undef_int i_writejpeg(i_img *im,int fd,int qfactor);
361 #endif /* HAVE_LIBJPEG */
364 i_img* i_readtiff_wiol(io_glue *ig, int length);
365 undef_int i_writetiff_wiol(i_img *im, io_glue *ig);
366 undef_int i_writetiff_wiol_faxable(i_img *im, io_glue *ig, int fine);
368 #endif /* HAVE_LIBTIFF */
371 i_img *i_readpng(int fd);
372 i_img *i_readpng_scalar(char *data, int length);
373 undef_int i_writepng(i_img *im,int fd);
374 #endif /* HAVE_LIBPNG */
377 i_img *i_readgif(int fd, int **colour_table, int *colours);
378 i_img *i_readgif_scalar(char *data, int length, int **colour_table, int *colours);
379 i_img *i_readgif_callback(i_read_callback_t callback, char *userdata, int **colour_table, int *colours);
380 undef_int i_writegif(i_img *im,int fd,int colors,int pixdev,int fixedlen,i_color fixed[]);
381 undef_int i_writegifmc(i_img *im,int fd,int colors);
382 undef_int i_writegifex(i_img *im,int fd);
383 undef_int i_writegif_gen(i_quantize *quant, int fd, i_img **imgs, int count, i_gif_opts *opts);
384 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);
386 void i_qdist(i_img *im);
388 #endif /* HAVE_LIBGIF */
390 i_img *i_readraw(int fd,int x,int y,int datachannels,int storechannels,int intrl);
391 undef_int i_writeraw(i_img* im,int fd);
393 i_img *i_readpnm_wiol(io_glue *ig, int length);
394 undef_int i_writeppm(i_img *im,int fd);
397 i_img* i_scaleaxis(i_img *im, float Value, int Axis);
398 i_img* i_scale_nn(i_img *im, float scx, float scy);
399 i_img* i_haar(i_img *im);
400 int i_count_colors(i_img *im,int maxc);
402 i_img* i_transform(i_img *im, int *opx,int opxl,int *opy,int opyl,double parm[],int parmlen);
405 i_img* i_transform2(int width, int height, int channels,
406 struct rm_op *ops, int ops_count,
407 double *n_regs, int n_regs_count,
408 i_color *c_regs, int c_regs_count,
409 i_img **in_imgs, int in_imgs_count);
412 void i_contrast(i_img *im, float intensity);
413 void i_hardinvert(i_img *im);
414 void i_noise(i_img *im, float amount, unsigned char type);
415 void i_bumpmap(i_img *im,i_img *bump,int channel,int light_x,int light_y,int strength);
416 void i_postlevels(i_img *im,int levels);
417 void i_mosaic(i_img *im,int size);
418 void i_watermark(i_img *im,i_img *wmark,int tx,int ty,int pixdiff);
419 void i_autolevels(i_img *im,float lsat,float usat,float skew);
420 void i_radnoise(i_img *im,int xo,int yo,float rscale,float ascale);
421 void i_turbnoise(i_img *im,float xo,float yo,float scale);
422 void i_gradgen(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
423 void i_nearest_color(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
425 /* Debug only functions */
427 void malloc_state( void );
429 /* this is sort of obsolete now */
432 undef_int (*i_has_format)(char *frmt);
433 i_color*(*ICL_set)(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
434 void (*ICL_info)(i_color *cl);
436 i_img*(*i_img_new)( void );
437 i_img*(*i_img_empty)(i_img *im,int x,int y);
438 i_img*(*i_img_empty_ch)(i_img *im,int x,int y,int ch);
439 void(*i_img_exorcise)(i_img *im);
441 void(*i_img_info)(i_img *im,int *info);
443 void(*i_img_setmask)(i_img *im,int ch_mask);
444 int (*i_img_getmask)(i_img *im);
446 int (*i_ppix)(i_img *im,int x,int y,i_color *val);
447 int (*i_gpix)(i_img *im,int x,int y,i_color *val);
449 void(*i_box)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
450 void(*i_draw)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
451 void(*i_arc)(i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
452 void(*i_copyto)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
453 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);
454 void(*i_rubthru)(i_img *im,i_img *src,int tx,int ty);
459 see error.c for documentation
460 the error information is currently global
467 typedef void (*i_error_cb)(int code, char const *msg);
468 typedef void (*i_failed_cb)(i_errmsg *msgs);
469 extern i_error_cb i_set_error_cb(i_error_cb);
470 extern i_failed_cb i_set_failed_cb(i_failed_cb);
471 extern void i_set_argv0(char const *);
472 extern int i_set_errors_fatal(int new_fatal);
473 extern i_errmsg *i_errors();
475 extern void i_push_error(int code, char const *msg);
476 extern void i_push_errorf(int code, char const *fmt, ...);
477 extern void i_push_errorvf(int code, char const *fmt, va_list);
478 extern void i_clear_error();
479 extern int i_failed(int code, char const *msg);