More support for autodetection of formats, still some error comes up in
[imager.git] / image.h
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1#ifndef _IMAGE_H_
2#define _IMAGE_H_
3
4#include "io.h"
5#include "iolayer.h"
6#include "log.h"
7#include "stackmach.h"
8
9
10#ifndef _MSC_VER
11#include <unistd.h>
12#endif
13#include <string.h>
14#include <stdio.h>
15#include <math.h>
16#include <stdlib.h>
17
18#ifdef SUNOS
19#include <strings.h>
20#endif
21
22#ifndef PI
23#define PI 3.14159265358979323846
24#endif
25
26#ifndef MAXINT
27#define MAXINT 2147483647
28#endif
29
30#include "datatypes.h"
31
32undef_int i_has_format(char *frmt);
33
34/* constructors and destructors */
35
36i_color *ICL_new_internal( unsigned char r,unsigned char g,unsigned char b,unsigned char a);
37i_color *ICL_set_internal(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
38void ICL_info (i_color *cl);
39void ICL_DESTROY (i_color *cl);
40void ICL_add (i_color *dst, i_color *src, int ch);
41
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42extern i_fcolor *i_fcolor_new(double r, double g, double b, double a);
43extern void i_fcolor_destroy(i_fcolor *cl);
44
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45extern void i_rgb_to_hsvf(i_fcolor *color);
46extern void i_hsv_to_rgbf(i_fcolor *color);
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47extern void i_rgb_to_hsv(i_color *color);
48extern void i_hsv_to_rgb(i_color *color);
6607600c 49
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50i_img *IIM_new(int x,int y,int ch);
51void IIM_DESTROY(i_img *im);
52i_img *i_img_new( void );
53i_img *i_img_empty(i_img *im,int x,int y);
54i_img *i_img_empty_ch(i_img *im,int x,int y,int ch);
55void i_img_exorcise(i_img *im);
56void i_img_destroy(i_img *im);
57
58void i_img_info(i_img *im,int *info);
59
faa9b3e7 60extern i_img *i_sametype(i_img *im, int xsize, int ysize);
dff75dee 61extern i_img *i_sametype_chans(i_img *im, int xsize, int ysize, int channels);
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62
63i_img *i_img_pal_new(int x, int y, int ch, int maxpal);
64
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65/* Image feature settings */
66
67void i_img_setmask (i_img *im,int ch_mask);
68int i_img_getmask (i_img *im);
69int i_img_getchannels(i_img *im);
70
71/* Base functions */
72
da1c841c 73#if 0
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74int i_ppix(i_img *im,int x,int y,i_color *val);
75int i_gpix(i_img *im,int x,int y,i_color *val);
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76int i_ppixf(i_img *im,int x,int y,i_color *val);
77int i_gpixf(i_img *im,int x,int y,i_color *val);
da1c841c 78#endif
02d1d628 79
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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)))
84
85#if 0
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86int i_ppix_d(i_img *im,int x,int y,i_color *val);
87int i_gpix_d(i_img *im,int x,int y,i_color *val);
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88int i_plin_d(i_img *im,int l, int r, int y, i_color *val);
89int i_glin_d(i_img *im,int l, int r, int y, i_color *val);
faa9b3e7 90#endif
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91
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))
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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))
96
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)))
101
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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)))
106
107
108
109
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110#define i_findcolor(im, color, entry) \
111 (((im)->i_f_findcolor) ? ((im)->i_f_findcolor)((im), (color), (entry)) : 0)
112
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) \
261f91c5 118 (((im)->i_f_addcolors) ? ((im)->i_f_addcolors)((im), (colors), (count)) : -1)
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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)
131
132#define i_img_virtual(im) ((im)->virtual)
133#define i_img_type(im) ((im)->type)
134#define i_img_bits(im) ((im)->bits)
02d1d628 135
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136/* Generic fills */
137struct i_fill_tag;
138
139typedef void (*i_fill_with_color_f)
140 (struct i_fill_tag *fill, int x, int y, int width, int channels,
43c5dacb 141 i_color *data);
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142typedef void (*i_fill_with_fcolor_f)
143 (struct i_fill_tag *fill, int x, int y, int width, int channels,
43c5dacb 144 i_fcolor *data);
f1ac5027 145typedef void (*i_fill_destroy_f)(struct i_fill_tag *fill);
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146typedef void (*i_fill_combine_f)(i_color *out, i_color *in, int channels,
147 int count);
148typedef void (*i_fill_combinef_f)(i_fcolor *out, i_fcolor *in, int channels,
149 int count);
150
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151
152typedef struct i_fill_tag
153{
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;
157
158 /* called for other sample sizes */
159 /* this must be non-NULL */
160 i_fill_with_fcolor_f fill_with_fcolor;
161
162 /* called if non-NULL to release any extra resources */
163 i_fill_destroy_f destroy;
164
165 /* if non-zero the caller will fill data with the original data
166 from the image */
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167 i_fill_combine_f combine;
168 i_fill_combinef_f combinef;
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169} i_fill_t;
170
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171typedef enum {
172 ic_none,
173 ic_normal,
174 ic_multiply,
175 ic_dissolve,
176 ic_add,
177 ic_subtract,
178 ic_diff,
179 ic_lighten,
180 ic_darken,
181 ic_hue,
182 ic_sat,
183 ic_value,
184 ic_color
185} i_combine_t;
186
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187extern i_fill_t *i_new_fill_solidf(i_fcolor *c, int combine);
188extern i_fill_t *i_new_fill_solid(i_color *c, int combine);
189extern i_fill_t *
190i_new_fill_hatch(i_color *fg, i_color *bg, int combine, int hatch,
191 unsigned char *cust_hatch, int dx, int dy);
192extern i_fill_t *
193i_new_fill_hatchf(i_fcolor *fg, i_fcolor *bg, int combine, int hatch,
194 unsigned char *cust_hatch, int dx, int dy);
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195extern i_fill_t *
196i_new_fill_image(i_img *im, double *matrix, int xoff, int yoff, int combine);
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197extern void i_fill_destroy(i_fill_t *fill);
198
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199float i_gpix_pch(i_img *im,int x,int y,int ch);
200
201/* functions for drawing primitives */
202
203void i_box (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
204void i_box_filled (i_img *im,int x1,int y1,int x2,int y2,i_color *val);
f1ac5027 205void i_box_cfill(i_img *im, int x1, int y1, int x2, int y2, i_fill_t *fill);
aa833c97 206void i_line (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
b437ce0a 207void i_line_aa (i_img *im,int x1,int y1,int x2,int y2,i_color *val, int endp);
02d1d628 208void i_arc (i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
f1ac5027 209void i_arc_cfill(i_img *im,int x,int y,float rad,float d1,float d2,i_fill_t *fill);
6af18d2b 210void i_circle_aa (i_img *im,float x, float y,float rad,i_color *val);
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211void i_copyto (i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
212void i_copyto_trans(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty,i_color *trans);
213void i_copy (i_img *im,i_img *src);
faa9b3e7 214int i_rubthru (i_img *im,i_img *src,int tx,int ty);
02d1d628 215
142c26ff 216undef_int i_flipxy (i_img *im, int direction);
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217extern i_img *i_rotate90(i_img *im, int degrees);
218extern i_img *i_rotate_exact(i_img *im, double amount);
219extern i_img *i_matrix_transform(i_img *im, int xsize, int ysize, double *matrix);
142c26ff 220
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221void i_bezier_multi(i_img *im,int l,double *x,double *y,i_color *val);
222void i_poly_aa (i_img *im,int l,double *x,double *y,i_color *val);
43c5dacb 223void i_poly_aa_cfill(i_img *im,int l,double *x,double *y,i_fill_t *fill);
02d1d628 224
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225undef_int i_flood_fill (i_img *im,int seedx,int seedy,i_color *dcol);
226undef_int i_flood_cfill(i_img *im, int seedx, int seedy, i_fill_t *fill);
227
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228
229/* image processing functions */
230
231void i_gaussian (i_img *im,float stdev);
232void i_conv (i_img *im,float *coeff,int len);
b6381851 233void i_unsharp_mask(i_img *im, double stddev, double scale);
02d1d628 234
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235/* colour manipulation */
236extern int i_convert(i_img *im, i_img *src, float *coeff, int outchan, int inchan);
faa9b3e7 237extern void i_map(i_img *im, unsigned char (*maps)[256], unsigned int mask);
f5991c03 238
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239float i_img_diff (i_img *im1,i_img *im2);
240
241/* font routines */
242
4cb58f1b 243undef_int i_init_fonts( int t1log );
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244
245#ifdef HAVE_LIBT1
246#include <t1lib.h>
247
b33c08f8 248undef_int i_init_t1( int t1log );
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249int i_t1_new( char *pfb, char *afm );
250int i_t1_destroy( int font_id );
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251undef_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 );
252undef_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 );
253void i_t1_bbox( int fontnum, float point, char *str, int len, int cords[6], int utf8, char const *flags );
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254void i_t1_set_aa( int st );
255void close_t1( void );
256
257#endif
258
259#ifdef HAVE_LIBTT
260
4f68b48f 261struct TT_Fonthandle_;
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262
263typedef struct TT_Fonthandle_ TT_Fonthandle;
264
b33c08f8 265undef_int i_init_tt( void );
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266TT_Fonthandle* i_tt_new(char *fontname);
267void i_tt_destroy( TT_Fonthandle *handle );
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268undef_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);
269undef_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);
270undef_int i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6], int utf8);
eeaa33fd 271int i_tt_has_chars(TT_Fonthandle *handle, char const *text, int len, int utf8, char *out);
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272
273#endif /* End of freetype headers */
274
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275#ifdef HAVE_FT2
276
277typedef struct FT2_Fonthandle FT2_Fonthandle;
278extern int i_ft2_init(void);
279extern FT2_Fonthandle * i_ft2_new(char *name, int index);
280extern void i_ft2_destroy(FT2_Fonthandle *handle);
281extern int i_ft2_setdpi(FT2_Fonthandle *handle, int xdpi, int ydpi);
282extern int i_ft2_getdpi(FT2_Fonthandle *handle, int *xdpi, int *ydpi);
283extern int i_ft2_settransform(FT2_Fonthandle *handle, double *matrix);
284extern int i_ft2_sethinting(FT2_Fonthandle *handle, int hinting);
285extern int i_ft2_bbox(FT2_Fonthandle *handle, double cheight, double cwidth,
4f68b48f 286 char const *text, int len, int *bbox, int utf8);
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287extern int i_ft2_text(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
288 i_color *cl, double cheight, double cwidth,
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289 char const *text, int len, int align, int aa,
290 int vlayout, int utf8);
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291extern int i_ft2_cp(FT2_Fonthandle *handle, i_img *im, int tx, int ty,
292 int channel, double cheight, double cwidth,
4f68b48f 293 char const *text, int len, int align, int aa, int vlayout,
faa9b3e7 294 int utf8);
4f68b48f 295extern int i_ft2_has_chars(FT2_Fonthandle *handle, char const *text, int len,
3dec2c92 296 int utf8, char *work);
02d1d628 297
faa9b3e7 298#endif
02d1d628 299
faa9b3e7 300#ifdef WIN32
02d1d628 301
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302extern int i_wf_bbox(char *face, int size, char *text, int length, int *bbox);
303extern int i_wf_text(char *face, i_img *im, int tx, int ty, i_color *cl,
304 int size, char *text, int len, int align, int aa);
305extern int i_wf_cp(char *face, i_img *im, int tx, int ty, int channel,
306 int size, char *text, int len, int align, int aa);
02d1d628 307
faa9b3e7 308#endif
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309
310/* functions for reading and writing formats */
311
312/* general reader callback
313 userdata - data the user passed into the reader
314 buffer - the buffer to fill with data
315 need - the amount of data needed
316 want - the amount of space we have to store data
317 fill buffer and return the number of bytes read, 0 for eof, -1 for error
318*/
319
320typedef int (*i_read_callback_t)(char *userdata, char *buffer, int need,
321 int want);
322
323/* i_gen_reader() translates the low-level requests from whatever library
324 into buffered requests.
325 but the called function can always bypass buffering by only ever
326 reading I<need> bytes.
327*/
328#define CBBUFSIZ 4096
329
330typedef struct {
331 i_read_callback_t cb;
332 char *userdata;
333 char buffer[CBBUFSIZ];
334 int length;
335 int cpos;
336} i_gen_read_data;
337
338extern int i_gen_reader(i_gen_read_data *info, char *buffer, int need);
339extern i_gen_read_data *i_gen_read_data_new(i_read_callback_t cb, char *userdata);
b33c08f8 340extern void i_free_gen_read_data(i_gen_read_data *);
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341
342/* general writer callback
343 userdata - the data the user passed into the writer
344 data - the data to write
345 data_size - the number of bytes to write
346 write the data, return non-zero on success, zero on failure.
347*/
348typedef int (*i_write_callback_t)(char *userdata, char const *data, int size);
349
350typedef struct {
351 i_write_callback_t cb;
352 char *userdata;
353 char buffer[CBBUFSIZ];
354 int maxlength;
355 int filledto;
356} i_gen_write_data;
357
358extern int i_gen_writer(i_gen_write_data *info, char const *data, int size);
359extern i_gen_write_data *i_gen_write_data_new(i_write_callback_t cb, char *userdata, int maxlength);
b33c08f8 360extern int i_free_gen_write_data(i_gen_write_data *, int flush);
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361
362/* transparency handling for quantized output */
363typedef enum i_transp_tag {
364 tr_none, /* ignore any alpha channel */
365 tr_threshold, /* threshold the transparency - uses tr_threshold */
366 tr_errdiff, /* error diffusion */
367 tr_ordered /* an ordered dither */
368} i_transp;
369
370/* controls how we build the colour map */
371typedef enum i_make_colors_tag {
372 mc_none, /* user supplied colour map only */
373 mc_web_map, /* Use the 216 colour web colour map */
374 mc_addi, /* Addi's algorithm */
97c4effc 375 mc_median_cut, /* median cut - similar to giflib, hopefully */
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376 mc_mask = 0xFF /* (mask for generator) */
377} i_make_colors;
378
379/* controls how we translate the colours */
380typedef enum i_translate_tag {
381 pt_giflib, /* get gif lib to do it (ignores make_colours) */
382 pt_closest, /* just use the closest match within the hashbox */
383 pt_perturb, /* randomly perturb the data - uses perturb_size*/
384 pt_errdiff /* error diffusion dither - uses errdiff */
385} i_translate;
386
387/* Which error diffusion map to use */
388typedef enum i_errdiff_tag {
389 ed_floyd, /* floyd-steinberg */
390 ed_jarvis, /* Jarvis, Judice and Ninke */
391 ed_stucki, /* Stucki */
392 ed_custom, /* the map found in ed_map|width|height|orig */
393 ed_mask = 0xFF, /* mask to get the map */
394 ed_bidir = 0x100 /* change direction for each row */
395} i_errdiff;
396
397/* which ordered dither map to use
398 currently only available for transparency
399 I don't know of a way to do ordered dither of an image against some
400 general palette
401 */
402typedef enum i_ord_dith_tag
403{
404 od_random, /* sort of random */
405 od_dot8, /* large dot */
406 od_dot4,
407 od_hline,
408 od_vline,
409 od_slashline, /* / line dither */
410 od_backline, /* \ line dither */
34ba4c5b 411 od_tiny, /* small checkerbox */
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412 od_custom /* custom 8x8 map */
413} i_ord_dith;
414
415typedef struct i_gif_pos_tag {
416 int x, y;
417} i_gif_pos;
418
419/* passed into i_writegif_gen() to control quantization */
420typedef struct i_quantize_tag {
421 /* how to handle transparency */
422 i_transp transp;
423 /* the threshold at which to make pixels opaque */
424 int tr_threshold;
425 i_errdiff tr_errdiff;
426 i_ord_dith tr_orddith;
427 unsigned char tr_custom[64];
428
429 /* how to make the colour map */
430 i_make_colors make_colors;
431
432 /* any existing colours
433 mc_existing is an existing colour table
434 mc_count is the number of existing colours
435 mc_size is the total size of the array that mc_existing points
436 at - this must be at least 256
437 */
438 i_color *mc_colors;
439 int mc_size;
440 int mc_count;
441
442 /* how we translate the colours */
443 i_translate translate;
444
445 /* the error diffusion map to use if translate is mc_errdiff */
446 i_errdiff errdiff;
447 /* the following define the error diffusion values to use if
448 errdiff is ed_custom. ed_orig is the column on the top row that
449 represents the current
450 */
451 int *ed_map;
452 int ed_width, ed_height, ed_orig;
453
454 /* the amount of perturbation to use for translate is mc_perturb */
455 int perturb;
456} i_quantize;
457
458typedef struct i_gif_opts {
459 /* each image has a local color map */
460 int each_palette;
461
462 /* images are interlaced */
463 int interlace;
464
465 /* time for which image is displayed
466 (in 1/100 seconds)
467 default: 0
468 */
469 int delay_count;
470 int *delays;
471
472 /* user input flags
473 default: 0
474 */
475 int user_input_count;
476 char *user_input_flags;
477
478 /* disposal
479 default: 0 */
480 int disposal_count;
481 char *disposal;
482
483 /* this is added to the color table when we make an image transparent */
484 i_color tran_color;
485
486 /* image positions */
487 int position_count;
488 i_gif_pos *positions;
489
490 /* Netscape loop extension - number of loops */
491 int loop_count;
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492
493 /* should be eliminate unused colors? */
494 int eliminate_unused;
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495} i_gif_opts;
496
497extern void quant_makemap(i_quantize *quant, i_img **imgs, int count);
498extern i_palidx *quant_translate(i_quantize *quant, i_img *img);
499extern void quant_transparent(i_quantize *quant, i_palidx *indices, i_img *img, i_palidx trans_index);
500
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501extern i_img *i_img_pal_new(int x, int y, int channels, int maxpal);
502extern i_img *i_img_pal_new_low(i_img *im, int x, int y, int channels, int maxpal);
503extern i_img *i_img_to_pal(i_img *src, i_quantize *quant);
504extern i_img *i_img_to_rgb(i_img *src);
505extern i_img *i_img_masked_new(i_img *targ, i_img *mask, int x, int y,
506 int w, int h);
507extern i_img *i_img_16_new(int x, int y, int ch);
508extern i_img *i_img_16_new_low(i_img *im, int x, int y, int ch);
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509extern i_img *i_img_double_new(int x, int y, int ch);
510extern i_img *i_img_double_new_low(i_img *im, int x, int y, int ch);
faa9b3e7 511
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512
513char * i_test_format_probe(io_glue *data, int length);
514
515
02d1d628 516#ifdef HAVE_LIBJPEG
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517i_img *
518i_readjpeg_wiol(io_glue *ig, int length, char** iptc_itext, int *itlength);
519undef_int i_writejpeg_wiol(i_img *im, io_glue *ig, int qfactor);
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520#endif /* HAVE_LIBJPEG */
521
522#ifdef HAVE_LIBTIFF
04418ecc 523i_img * i_readtiff_wiol(io_glue *ig, int length);
10461f9a 524i_img ** i_readtiff_multi_wiol(io_glue *ig, int length, int *count);
02d1d628 525undef_int i_writetiff_wiol(i_img *im, io_glue *ig);
10461f9a 526undef_int i_writetiff_multi_wiol(io_glue *ig, i_img **imgs, int count);
4c2d6970 527undef_int i_writetiff_wiol_faxable(i_img *im, io_glue *ig, int fine);
10461f9a 528undef_int i_writetiff_multi_wiol_faxable(io_glue *ig, i_img **imgs, int count, int fine);
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529
530#endif /* HAVE_LIBTIFF */
531
532#ifdef HAVE_LIBPNG
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533i_img *i_readpng_wiol(io_glue *ig, int length);
534undef_int i_writepng_wiol(i_img *im, io_glue *ig);
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535#endif /* HAVE_LIBPNG */
536
537#ifdef HAVE_LIBGIF
faa9b3e7 538i_img *i_readgif(int fd, int **colour_table, int *colours);
10461f9a 539i_img *i_readgif_wiol(io_glue *ig, int **colour_table, int *colours);
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540i_img *i_readgif_scalar(char *data, int length, int **colour_table, int *colours);
541i_img *i_readgif_callback(i_read_callback_t callback, char *userdata, int **colour_table, int *colours);
542extern i_img **i_readgif_multi(int fd, int *count);
543extern i_img **i_readgif_multi_scalar(char *data, int length, int *count);
544extern i_img **i_readgif_multi_callback(i_read_callback_t callback, char *userdata, int *count);
10461f9a 545extern i_img **i_readgif_multi_wiol(io_glue *ig, int *count);
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546undef_int i_writegif(i_img *im,int fd,int colors,int pixdev,int fixedlen,i_color fixed[]);
547undef_int i_writegifmc(i_img *im,int fd,int colors);
548undef_int i_writegifex(i_img *im,int fd);
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549undef_int i_writegif_gen(i_quantize *quant, int fd, i_img **imgs, int count);
550undef_int i_writegif_callback(i_quantize *quant, i_write_callback_t cb, char *userdata, int maxbuffer, i_img **imgs, int count);
551undef_int i_writegif_wiol(io_glue *ig, i_quantize *quant,
10461f9a 552 i_img **imgs, int count);
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553void i_qdist(i_img *im);
554
555#endif /* HAVE_LIBGIF */
556
04418ecc 557i_img * i_readraw_wiol(io_glue *ig, int x, int y, int datachannels, int storechannels, int intrl);
895dbd34 558undef_int i_writeraw_wiol(i_img* im, io_glue *ig);
02d1d628 559
04418ecc 560i_img * i_readpnm_wiol(io_glue *ig, int length);
067d6bdc 561undef_int i_writeppm_wiol(i_img *im, io_glue *ig);
02d1d628 562
1ec86afa 563extern int i_writebmp_wiol(i_img *im, io_glue *ig);
d08b8f85 564extern i_img *i_readbmp_wiol(io_glue *ig);
02d1d628 565
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566int tga_header_verify(unsigned char headbuf[18]);
567
1ec86afa 568i_img * i_readtga_wiol(io_glue *ig, int length);
febba01f 569undef_int i_writetga_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
1ec86afa 570
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571i_img * i_readrgb_wiol(io_glue *ig, int length);
572undef_int i_writergb_wiol(i_img *img, io_glue *ig, int wierdpack, int compress, char *idstring, size_t idlen);
573
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574i_img * i_scaleaxis(i_img *im, float Value, int Axis);
575i_img * i_scale_nn(i_img *im, float scx, float scy);
576i_img * i_haar(i_img *im);
577int i_count_colors(i_img *im,int maxc);
02d1d628 578
04418ecc 579i_img * i_transform(i_img *im, int *opx,int opxl,int *opy,int opyl,double parm[],int parmlen);
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580
581struct rm_op;
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582i_img * i_transform2(int width, int height, int channels,
583 struct rm_op *ops, int ops_count,
584 double *n_regs, int n_regs_count,
585 i_color *c_regs, int c_regs_count,
586 i_img **in_imgs, int in_imgs_count);
febba01f 587
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588/* filters */
589
590void i_contrast(i_img *im, float intensity);
591void i_hardinvert(i_img *im);
592void i_noise(i_img *im, float amount, unsigned char type);
593void i_bumpmap(i_img *im,i_img *bump,int channel,int light_x,int light_y,int strength);
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594void i_bumpmap_complex(i_img *im, i_img *bump, int channel, int tx, int ty, float Lx, float Ly,
595 float Lz, float cd, float cs, float n, i_color *Ia, i_color *Il, i_color *Is);
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596void i_postlevels(i_img *im,int levels);
597void i_mosaic(i_img *im,int size);
598void i_watermark(i_img *im,i_img *wmark,int tx,int ty,int pixdiff);
599void i_autolevels(i_img *im,float lsat,float usat,float skew);
600void i_radnoise(i_img *im,int xo,int yo,float rscale,float ascale);
601void i_turbnoise(i_img *im,float xo,float yo,float scale);
602void i_gradgen(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
603void i_nearest_color(i_img *im, int num, int *xo, int *yo, i_color *ival, int dmeasure);
dff75dee 604i_img *i_diff_image(i_img *im, i_img *im2, int mindist);
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605typedef enum {
606 i_fst_linear,
607 i_fst_curved,
608 i_fst_sine,
609 i_fst_sphere_up,
610 i_fst_sphere_down,
611 i_fst_end
612} i_fountain_seg_type;
613typedef enum {
614 i_fc_direct,
615 i_fc_hue_up,
616 i_fc_hue_down,
617 i_fc_end
618} i_fountain_color;
619typedef struct {
620 double start, middle, end;
621 i_fcolor c[2];
622 i_fountain_seg_type type;
623 i_fountain_color color;
624} i_fountain_seg;
625typedef enum {
626 i_fr_none,
627 i_fr_sawtooth,
628 i_fr_triangle,
629 i_fr_saw_both,
630 i_fr_tri_both
631} i_fountain_repeat;
632typedef enum {
633 i_ft_linear,
634 i_ft_bilinear,
635 i_ft_radial,
636 i_ft_radial_square,
637 i_ft_revolution,
638 i_ft_conical,
639 i_ft_end
640} i_fountain_type;
641typedef enum {
642 i_fts_none,
643 i_fts_grid,
644 i_fts_random,
645 i_fts_circle
646} i_ft_supersample;
647void i_fountain(i_img *im, double xa, double ya, double xb, double yb,
648 i_fountain_type type, i_fountain_repeat repeat,
649 int combine, int super_sample, double ssample_param,
650 int count, i_fountain_seg *segs);
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651extern i_fill_t *
652i_new_fill_fount(double xa, double ya, double xb, double yb,
653 i_fountain_type type, i_fountain_repeat repeat,
654 int combine, int super_sample, double ssample_param,
655 int count, i_fountain_seg *segs);
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656
657/* Debug only functions */
658
659void malloc_state( void );
660
661/* this is sort of obsolete now */
662
663typedef struct {
664 undef_int (*i_has_format)(char *frmt);
665 i_color*(*ICL_set)(i_color *cl,unsigned char r,unsigned char g,unsigned char b,unsigned char a);
666 void (*ICL_info)(i_color *cl);
667
668 i_img*(*i_img_new)( void );
669 i_img*(*i_img_empty)(i_img *im,int x,int y);
670 i_img*(*i_img_empty_ch)(i_img *im,int x,int y,int ch);
671 void(*i_img_exorcise)(i_img *im);
672
673 void(*i_img_info)(i_img *im,int *info);
674
675 void(*i_img_setmask)(i_img *im,int ch_mask);
676 int (*i_img_getmask)(i_img *im);
677
da1c841c 678 /*
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679 int (*i_ppix)(i_img *im,int x,int y,i_color *val);
680 int (*i_gpix)(i_img *im,int x,int y,i_color *val);
da1c841c 681 */
02d1d628 682 void(*i_box)(i_img *im,int x1,int y1,int x2,int y2,i_color *val);
aa833c97 683 void(*i_line)(i_img *im,int x1,int y1,int x2,int y2,i_color *val,int endp);
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684 void(*i_arc)(i_img *im,int x,int y,float rad,float d1,float d2,i_color *val);
685 void(*i_copyto)(i_img *im,i_img *src,int x1,int y1,int x2,int y2,int tx,int ty);
686 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);
faa9b3e7 687 int(*i_rubthru)(i_img *im,i_img *src,int tx,int ty);
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688
689} symbol_table_t;
690
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691/* error handling
692 see error.c for documentation
693 the error information is currently global
694*/
695typedef struct {
696 char *msg;
697 int code;
698} i_errmsg;
a743c0a6 699
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700typedef void (*i_error_cb)(int code, char const *msg);
701typedef void (*i_failed_cb)(i_errmsg *msgs);
702extern i_error_cb i_set_error_cb(i_error_cb);
703extern i_failed_cb i_set_failed_cb(i_failed_cb);
704extern void i_set_argv0(char const *);
705extern int i_set_errors_fatal(int new_fatal);
faa9b3e7 706extern i_errmsg *i_errors(void);
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707
708extern void i_push_error(int code, char const *msg);
709extern void i_push_errorf(int code, char const *fmt, ...);
710extern void i_push_errorvf(int code, char const *fmt, va_list);
faa9b3e7 711extern void i_clear_error(void);
848ba81a 712extern int i_failed(int code, char const *msg);
02d1d628 713
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714/* image tag processing */
715extern void i_tags_new(i_img_tags *tags);
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716extern int i_tags_addn(i_img_tags *tags, char const *name, int code,
717 int idata);
718extern int i_tags_add(i_img_tags *tags, char const *name, int code,
719 char const *data, int size, int idata);
faa9b3e7 720extern void i_tags_destroy(i_img_tags *tags);
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721extern int i_tags_find(i_img_tags *tags, char const *name, int start,
722 int *entry);
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723extern int i_tags_findn(i_img_tags *tags, int code, int start, int *entry);
724extern int i_tags_delete(i_img_tags *tags, int entry);
97c4effc 725extern int i_tags_delbyname(i_img_tags *tags, char const *name);
faa9b3e7 726extern int i_tags_delbycode(i_img_tags *tags, int code);
97c4effc 727extern int i_tags_get_float(i_img_tags *tags, char const *name, int code,
fd9a31d2 728 double *value);
97c4effc 729extern int i_tags_set_float(i_img_tags *tags, char const *name, int code,
fd9a31d2 730 double value);
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731extern int i_tags_get_int(i_img_tags *tags, char const *name, int code,
732 int *value);
733extern int i_tags_get_string(i_img_tags *tags, char const *name, int code,
fd9a31d2 734 char *value, size_t value_size);
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735extern int i_tags_get_color(i_img_tags *tags, char const *name, int code,
736 i_color *value);
737extern int i_tags_set_color(i_img_tags *tags, char const *name, int code,
738 i_color const *value);
fd9a31d2 739extern void i_tags_print(i_img_tags *tags);
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740
741#endif