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/* $Header: /home/cvs/gd4o/gdstubs.c,v 1.7 2003/11/25 01:02:32 matt Exp $ */
/*
* GD4O: An OCaml interface to the Gd graphics library.
* Based on Shawn Wagner's OCamlGD 0.7.0.
* Copyright (C) 2002 Shawn Wagner
* Copyright (C) 2003 Matthew C. Gushee
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <caml/custom.h>
#include <caml/memory.h>
#include <caml/callback.h>
#include <caml/fail.h>
#include <gd.h>
#include <gdfontl.h>
#include <gdfonts.h>
#include <gdfontt.h>
#include <gdfontmb.h>
#include <gdfontg.h>
struct gd_wrapper {
gdImagePtr im;
};
typedef struct gd_wrapper GdWrapper;
struct font_wrapper {
gdFontPtr font;
};
typedef struct font_wrapper GdFWrapper;
struct points_wrapper {
gdPointPtr pts;
};
typedef struct points_wrapper GdPtsWrapper;
#define IM_VAL(X) ((*((GdWrapper *)(Data_custom_val(X)))).im)
#define FONT_VAL(X) ((*((GdFWrapper *)(Data_custom_val(X)))).font)
#define PTS_VAL(X) ((*((GdPtsWrapper *)(Data_custom_val(X)))).pts)
static void ml_gd_finalize(value);
static long ml_gd_hash(value);
static int ml_font_cmp(value, value);
static long ml_font_hash(value);
static struct custom_operations image_t_custom_operations = {
"GD image/0.1",
ml_gd_finalize,
NULL,
ml_gd_hash,
NULL,
NULL
};
static struct custom_operations font_t_custom_operations = {
"GD font/0.1",
NULL,
ml_font_cmp,
ml_font_hash,
NULL,
NULL
};
static gdFontPtr fonts[5] =
{
NULL,
NULL,
NULL,
NULL,
NULL
};
static int fonts_init = 0;
static int pseudoColors[6] =
{ gdAntiAliased, gdBrushed, gdStyled,
gdStyledBrushed, gdTiled, gdTransparent };
static int ftExFlags[2] =
{ gdFTEX_LINESPACE, gdFTEX_CHARMAP };
static int ftExCharmaps[3] =
{ gdFTEX_Unicode, gdFTEX_Shift_JIS, gdFTEX_Big5 };
void ml_gd_finalize(value v) {
if (IM_VAL(v))
gdImageDestroy(IM_VAL(v));
}
long ml_gd_hash(value v) {
return gdImageSX(IM_VAL(v));
}
int ml_font_cmp(value v1, value v2) {
return (int)FONT_VAL(v1) - (int)FONT_VAL(v2);
}
static long ml_font_hash(value v) {
return (long)FONT_VAL(v);
}
value ml_get_font(value i) {
CAMLparam1(i);
CAMLlocal1(v);
v = alloc_custom(&font_t_custom_operations, sizeof(GdFWrapper), 1, 10);
if (!fonts_init) {
fonts[0] = gdFontTiny;
fonts[1] = gdFontSmall;
fonts[2] = gdFontMediumBold;
fonts[3] = gdFontLarge;
fonts[4] = gdFontGiant;
fonts_init = 1;
}
FONT_VAL(v) = fonts[Int_val(i)];
CAMLreturn(v);
}
value ml_image_create(value sx, value sy) {
CAMLparam2(sx, sy);
CAMLlocal1(v);
gdImagePtr im;
im = gdImageCreate(Int_val(sx), Int_val(sy));
if (!im)
raise_constant(*(value *)caml_named_value("gdopen failed"));
v = alloc_custom(&image_t_custom_operations, sizeof(GdWrapper),
(Int_val(sx) * Int_val(sy)) + sizeof(gdImage), 10000);
IM_VAL(v) = im;
CAMLreturn(v);
}
value ml_image_create_truecolor(value sx, value sy) {
CAMLparam2(sx, sy);
CAMLlocal1(v);
gdImagePtr im;
im = gdImageCreateTrueColor(Int_val(sx), Int_val(sy));
if (!im)
raise_constant(*(value *)caml_named_value("gdopen failed"));
v = alloc_custom(&image_t_custom_operations, sizeof(GdWrapper),
(Int_val(sx) * Int_val(sy)) + sizeof(gdImage), 10000);
IM_VAL(v) = im;
CAMLreturn(v);
}
value ml_image_open_png(value filename) {
CAMLparam1(filename);
CAMLlocal1(v);
FILE *in;
gdImagePtr im;
in = fopen(String_val(filename), "rb");
if (!in)
raise_not_found();
im = gdImageCreateFromPng(in);
fclose(in);
if (!im)
raise_constant(*(value *)caml_named_value("gdopen failed"));
v = alloc_custom(&image_t_custom_operations, sizeof(GdWrapper),
sizeof(gdImage) + (gdImageSX(im) * gdImageSY(im)), 100000);
IM_VAL(v) = im;
CAMLreturn(v);
}
/* This is useful when an image has been created from a PNG file,
* so it could be either truecolor or 8-bit. */
value ml_image_is_truecolor(value gdw) {
gdImagePtr im;
im = IM_VAL(gdw);
if (im->trueColor) {
return Val_true;
}
else {
return Val_false;
}
}
value ml_image_open_jpeg(value filename) {
#ifdef HAVE_JPEG
FILE *in;
gdImagePtr im;
CAMLparam1(filename);
CAMLlocal1(v);
in = fopen(String_val(filename), "rb");
if (!in)
raise_not_found();
im = gdImageCreateFromJpeg(in);
fclose(in);
if (!im)
raise_constant(*(value *)caml_named_value("gdopen failed"));
v = alloc_custom(&image_t_custom_operations, sizeof(GdWrapper),
sizeof(gdImage) + (gdImageSX(im) * gdImageSY(im)), 100000);
IM_VAL(v) = im;
CAMLreturn(v);
#else
raise_constant(*(value *)caml_named_value("gd type not supported"));
return Val_unit;
#endif
}
value ml_image_line_native(value gdw, value x1, value y1, value x2, value y2,
value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageLine(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2), Int_val(y2),
pseudoColors[pcval]);
else
gdImageLine(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2), Int_val(y2),
Int_val(c));
return Val_unit;
}
value ml_image_line(value *argv, int argc) {
#ifdef SAFER
assert (argc == 7);
#endif
return
ml_image_line_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
}
value ml_image_dline_native(value gdw, value x1, value y1, value x2, value y2,
value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageDashedLine(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), pseudoColors[pcval]);
else
gdImageDashedLine(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), Int_val(c));
return Val_unit;
}
value ml_image_dline(value *argv, int argc) {
#ifdef SAFER
assert (argc == 7);
#endif
return
ml_image_line_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
}
value ml_image_rect_native(value gdw, value x1, value y1, value x2, value y2,
value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageRectangle(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), pseudoColors[pcval]);
else
gdImageRectangle(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), Int_val(c));
return Val_unit;
}
value ml_image_rect(value *argv, int argc) {
#ifdef SAFER
assert (argc == 7);
#endif
return
ml_image_rect_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
}
value ml_image_frect_native(value gdw, value x1, value y1, value x2, value y2,
value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageFilledRectangle(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), pseudoColors[pcval]);
else
gdImageFilledRectangle(IM_VAL(gdw), Int_val(x1), Int_val(y1), Int_val(x2),
Int_val(y2), Int_val(c));
return Val_unit;
}
value ml_image_frect(value *argv, int argc) {
#ifdef SAFER
assert (argc == 7);
#endif
return
ml_image_frect_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
}
/* Draw a polygon. */
value ml_image_poly(value gdw, value points, value numpts, value c, value pc) {
gdPoint gd_points[numpts];
int i, n, pcval;
pcval = Int_val(pc);
n = Int_val(numpts);
for (i = 0; i < n; i++) {
gd_points[i].x = Int_val(Field(Field(points, i), 0));
gd_points[i].y = Int_val(Field(Field(points, i), 1));
}
if (pcval >= 0)
gdImagePolygon(IM_VAL(gdw), gd_points, Int_val(numpts), pseudoColors[pcval]);
else
gdImagePolygon(IM_VAL(gdw), gd_points, Int_val(numpts), Int_val(c));
return Val_unit;
}
/* Draw a filled polygon. */
value ml_image_fpoly(value gdw, value points, value numpts, value c, value pc) {
gdPoint gd_points[numpts];
int i, n, pcval;
pcval = Int_val(pc);
n = Int_val(numpts);
for (i = 0; i < n; i++) {
gd_points[i].x = Int_val(Field(Field(points, i), 0));
gd_points[i].y = Int_val(Field(Field(points, i), 1));
}
if (pcval >= 0)
gdImageFilledPolygon(IM_VAL(gdw), gd_points, Int_val(numpts), pseudoColors[pcval]);
else
gdImageFilledPolygon(IM_VAL(gdw), gd_points, Int_val(numpts), Int_val(c));
return Val_unit;
}
value ml_image_fell_native(value gdw, value cx, value cy, value w, value h,
value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageFilledEllipse(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w),
Int_val(h), pseudoColors[pcval]);
else
gdImageFilledEllipse(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w),
Int_val(h), Int_val(c));
return Val_unit;
}
value ml_image_fell(value *argv, int argc) {
#ifdef SAFER
assert (argc == 7);
#endif
return
ml_image_fell_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]);
}
value ml_image_arc_native(value gdw, value cx, value cy, value w, value h,
value s, value e, value c, value pc) {
int pcval;
pcval = Int_val(pc);
if (pcval >= 0)
gdImageArc(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w), Int_val(h),
Int_val(s), Int_val(e), pseudoColors[pcval]);
else
gdImageArc(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w), Int_val(h),
Int_val(s), Int_val(e), Int_val(c));
return Val_unit;
}
value ml_image_arc(value *argv, int argc) {
#ifdef SAFER
assert (argc == 9);
#endif
return
ml_image_arc_native(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5],
argv[6], argv[7], argv[8]);
}
value ml_image_carc_native(value gdw, value cx, value cy, value w,
value h, value s, value e, value c,
value pc, value nofill, value edged) {
int color, style, pcval;
pcval = Int_val(pc);
if (pcval >= 0) color = pseudoColors[pcval];
else color = Int_val(c);
style = gdArc;
if (Bool_val(nofill)) style |= gdNoFill;
if (Bool_val(edged)) style |= gdEdged;
gdImageFilledArc(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w),
Int_val(h), Int_val(s), Int_val(e), color, style);
return Val_unit;
}
value ml_image_carc(value *argv, int argc) {
#ifdef SAFER
assert (argc == 11);
#endif
return
ml_image_carc_native(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5],
argv[6], argv[7], argv[8], argv[9], argv[10]);
}
value ml_image_cchord_native(value gdw, value cx, value cy, value w,
value h, value s, value e, value c,
value pc, value nofill, value edged) {
int color, style, pcval;
pcval = Int_val(pc);
if (pcval >= 0) color = pseudoColors[pcval];
else color = Int_val(c);
style = gdChord;
if (Bool_val(nofill)) style |= gdNoFill;
if (Bool_val(edged)) style |= gdEdged;
gdImageFilledArc(IM_VAL(gdw), Int_val(cx), Int_val(cy), Int_val(w),
Int_val(h), Int_val(s), Int_val(e), color, style);
return Val_unit;
}
value ml_image_cchord(value *argv, int argc) {
#ifdef SAFER
assert (argc == 11);
#endif
return
ml_image_cchord_native(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5],
argv[6], argv[7], argv[8], argv[9], argv[10]);
}
value ml_image_border_fill_native(value gdw, value x, value y, value b,
value c) {
gdImageFillToBorder(IM_VAL(gdw), Int_val(x), Int_val(y), Int_val(b),
Int_val(c));
return Val_unit;
}
value ml_image_border_fill(value *argv, int argc) {
#ifdef SAFER
assert (argc == 5);
#endif
return
ml_image_border_fill_native(argv[0], argv[1], argv[2], argv[3], argv[4]);
}
value ml_image_fill(value gdw, value x, value y, value c) {
gdImageFill(IM_VAL(gdw), Int_val(x), Int_val(y), Int_val(c));
return Val_unit;
}
value ml_image_char_native(value gdw, value font, value x, value y, value c,
value color) {
gdImageChar(IM_VAL(gdw), FONT_VAL(font), Int_val(x), Int_val(y), Int_val(c),
Int_val(color));
return Val_unit;
}
value ml_image_char(value *argv, int argc) {
#ifdef SAFER
assert (argc == 6);
#endif
return ml_image_char_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]);
}
value ml_image_charu_native(value gdw, value font, value x, value y, value c,
value color) {
gdImageCharUp(IM_VAL(gdw), FONT_VAL(font), Int_val(x), Int_val(y), Int_val(c),
Int_val(color));
return Val_unit;
}
value ml_image_charu(value *argv, int argc) {
#ifdef SAFER
assert (argc == 6);
#endif
return ml_image_charu_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]);
}
value ml_image_str_native(value gdw, value font, value x, value y, value s,
value color) {
gdImageString(IM_VAL(gdw), FONT_VAL(font), Int_val(x), Int_val(y),
String_val(s), Int_val(color));
return Val_unit;
}
value ml_image_str(value *argv, int argc) {
#ifdef SAFER
assert (argc == 6);
#endif
return ml_image_str_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]);
}
value ml_image_stru_native(value gdw, value font, value x, value y, value s,
value color) {
gdImageStringUp(IM_VAL(gdw), FONT_VAL(font), Int_val(x), Int_val(y),
String_val(s), Int_val(color));
return Val_unit;
}
value ml_image_stru(value *argv, int argc) {
#ifdef SAFER
assert (argc == 6);
#endif
return ml_image_stru_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]);
}
void raise_freetype_exception(char *msg) {
raise_with_string(*caml_named_value("gd freetype exception"), msg);
}
value ml_image_str_ft_base(gdImagePtr im, value fg, value fname, value size,
value angle, value x, value y, value string) {
#ifdef HAVE_FREETYPE
CAMLparam5(fg, fname, size, angle, x);
CAMLxparam2(y, string);
int brect[8];
int i;
char *rc;
CAMLlocal1(ml_brect);
ml_brect = alloc (8, 0);
rc = gdImageStringFT(im, brect, Int_val(fg), String_val(fname),
Double_val(size), Double_val(angle), Int_val(x),
Int_val(y), String_val(string));
if (rc != NULL) {
raise_freetype_exception (rc);
}
for (i = 0; i < 8; i++)
Store_field(ml_brect, i, Val_int(brect[i]));
CAMLreturn(ml_brect);
#else
raise_constant(*(value *)caml_named_value("gd type not supported"));
return Val_unit;
#endif
}
value ml_image_str_ft_native(value gdw, value fg, value fname, value size,
value angle, value x, value y, value string) {
CAMLparam5(gdw, fg, fname, size, angle);
CAMLxparam3(x, y, string);
CAMLreturn(ml_image_str_ft_base(IM_VAL(gdw), fg, fname, size, angle,
x, y, string));
}
value ml_image_str_ft(value *argv, int argc) {
#ifdef SAFER
assert (argc == 8);
#endif
return ml_image_str_ft_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7]);
}
value ml_image_ft_bbox_native(value fname, value size, value angle,
value x, value y, value string) {
CAMLparam5(fname, size, angle, x, y);
CAMLxparam1(string);
CAMLreturn(ml_image_str_ft_base(NULL, 0, fname, size, angle,
x, y, string));
}
value ml_image_ft_bbox(value *argv, int argc) {
#ifdef SAFER
assert (argc == 6);
#endif
return ml_image_ft_bbox_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5]);
}
value ml_image_str_ftex_base(gdImagePtr im, value fg, value fname, value size,
value angle, value x, value y, value flags,
value spacing, value charmap, value string) {
#ifdef HAVE_FREETYPE
int numflags, i;
int brect[8];
char *rc;
gdFTStringExtra extra;
CAMLparam5(fg, fname, size, angle, x);
CAMLxparam5(y, flags, spacing, charmap, string);
CAMLlocal1(ml_brect);
numflags = Wosize_val(flags);
for (i = 0; i < numflags; i++)
extra.flags |= ftExFlags[Int_val(Field(flags, i))];
extra.linespacing = Double_val(spacing);
extra.charmap = ftExCharmaps[Int_val(charmap)];
ml_brect = alloc (8, 0);
rc = gdImageStringFTEx(im, brect, Int_val(fg), String_val(fname),
Double_val(size), Double_val(angle), Int_val(x),
Int_val(y), String_val(string), &extra);
if (rc != NULL) {
raise_freetype_exception (rc);
}
for (i = 0; i < 8; i++)
Store_field(ml_brect, i, Val_int(brect[i]));
CAMLreturn(ml_brect);
#else
raise_constant(*(value *)caml_named_value("gd type not supported"));
return Val_unit;
#endif
}
value ml_image_str_ftex_native(value gdw, value fg, value fname, value size,
value angle, value x, value y, value flags,
value spacing, value charmap, value string) {
CAMLparam5(gdw, fg, fname, size, angle);
CAMLxparam5(x, y, flags, spacing, charmap);
CAMLxparam1(string);
CAMLreturn(ml_image_str_ftex_base(IM_VAL(gdw), fg, fname, size, angle,
x, y, flags, spacing, charmap, string));
}
value ml_image_str_ftex(value *argv, int argc) {
#ifdef SAFER
assert (argc == 11);
#endif
return ml_image_str_ftex_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8], argv[9], argv[10]);
}
value ml_image_ftex_bbox_native(value fname, value size, value angle,
value x, value y, value flags, value spacing,
value charmap, value string) {
CAMLparam5(fname, size, angle, x, y);
CAMLxparam4(flags, spacing, charmap, string);
CAMLreturn(ml_image_str_ftex_base(NULL, 0, fname, size, angle,
x, y, flags, spacing, charmap,
string));
}
value ml_image_ftex_bbox(value *argv, int argc) {
#ifdef SAFER
assert (argc == 9);
#endif
return ml_image_ftex_bbox_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8]);
}
value ml_set_pixel(value gdw, value x, value y, value c) {
gdImageSetPixel(IM_VAL(gdw), Int_val(x), Int_val(y), Int_val(c));
return Val_unit;
}
value ml_get_pixel(value gdw, value x, value y) {
return Val_int(gdImageGetPixel(IM_VAL(gdw), Int_val(x), Int_val(y)));
}
value ml_get_width(value gdw) {
return Val_int(gdImageSX(IM_VAL(gdw)));
}
value ml_get_height(value gdw) {
return Val_int(gdImageSY(IM_VAL(gdw)));
}
value ml_save_png(value gdw, value filename) {
FILE *out;
out = fopen(String_val(filename), "wb");
gdImagePng(IM_VAL(gdw), out);
fclose(out);
return Val_unit;
}
value ml_save_jpeg(value gdw, value filename, value quality) {
#ifdef HAVE_JPEG
FILE *out;
out = fopen(String_val(filename), "wb");
gdImageJpeg(IM_VAL(gdw), out, Int_val(quality));
fclose(out);
#else
raise_constant(*(value*)caml_named_value("gd type not supported"));
#endif
return Val_unit;
}
/* Taken from the ocaml source... */
struct channel;
void really_putblock (struct channel *, char *, long);
/* Extract a struct channel * from the heap object representing it */
#define Channel(v) (*((struct channel **) (Data_custom_val(v))))
value ml_dump_png(value gdw, value chan) {
int size;
void* dat;
dat = gdImagePngPtr(IM_VAL(gdw), &size);
really_putblock(Channel(chan), dat, size);
free(dat);
return Val_unit;
}
value ml_dump_jpeg(value gdw, value chan, value quality) {
#ifdef HAVE_JPEG
int size;
void* dat;
dat = gdImageJpegPtr(IM_VAL(gdw), &size, Int_val(quality));
really_putblock(Channel(chan), dat, size);
free(dat);
#else
raise_constant(*(value*)caml_named_value("gd type not supported"));
#endif
return Val_unit;
}
value ml_image_set_antialiased(value gdw, value c) {
gdImageSetAntiAliased(IM_VAL(gdw), Int_val(c));
return Val_unit;
}
value ml_image_set_antialiased_dont_blend(value gdw, value aa, value db) {
gdImageSetAntiAliasedDontBlend(IM_VAL(gdw), Int_val(aa), Int_val(db));
return Val_unit;
}
value ml_image_set_brush(value gdw, value br) {
gdImageSetBrush(IM_VAL(gdw), IM_VAL(br));
return Val_unit;
}
value ml_image_set_tile(value gdw, value t) {
gdImageSetTile(IM_VAL(gdw), IM_VAL(t));
return Val_unit;
}
value ml_image_set_thickness(value gdw, value t) {
gdImageSetThickness(IM_VAL(gdw), Int_val(t));
return Val_unit;
}
value ml_image_set_clip(value gdw, value x1, value y1, value x2, value y2) {
gdImageSetClip(IM_VAL(gdw), Int_val(x1), Int_val(y1),
Int_val(x2), Int_val(y2));
return Val_unit;
}
value ml_image_color_alloc(value gdw, value r, value g, value b) {
int color;
color = gdImageColorAllocate(IM_VAL(gdw), Int_val(r), Int_val(g), Int_val(b));
return Val_int(color);
}
value ml_image_color_closest(value gdw, value r, value g, value b) {
int color;
color = gdImageColorClosest(IM_VAL(gdw), Int_val(r), Int_val(g), Int_val(b));
return Val_int(color);
}
value ml_image_color_closest_hwb(value gdw, value r, value g, value b) {
int color;
color =
gdImageColorClosestHWB(IM_VAL(gdw), Int_val(r), Int_val(g), Int_val(b));
return Val_int(color);
}
value ml_image_color_exact(value gdw, value r, value g, value b) {
int color;
color = gdImageColorExact(IM_VAL(gdw), Int_val(r), Int_val(g), Int_val(b));
return Val_int(color);
}
value ml_image_color_resolve(value gdw, value r, value g, value b) {
int color;
color = gdImageColorResolve(IM_VAL(gdw), Int_val(r), Int_val(g), Int_val(b));
return Val_int(color);
}
value ml_image_red_channel(value gdw, value c) {
return Val_int(gdImageRed(IM_VAL(gdw), Int_val(c)));
}
value ml_image_green_channel(value gdw, value c) {
return Val_int(gdImageGreen(IM_VAL(gdw), Int_val(c)));
}
value ml_image_blue_channel(value gdw, value c) {
return Val_int(gdImageBlue(IM_VAL(gdw), Int_val(c)));
}
value ml_image_alpha_channel(value gdw, value c) {
return Val_int(gdImageAlpha(IM_VAL(gdw), Int_val(c)));
}
value ml_image_get_transparent(value gdw) {
return Val_int(gdImageGetTransparent(IM_VAL(gdw)));
}
value ml_image_set_transparent(value gdw, value c) {
gdImageColorTransparent(IM_VAL(gdw), Int_val(c));
return Val_unit;
}
/* ================================================================== */
/* ============ Image Copying and Resizing Functions ================ */
/* ================================================================== */
value ml_image_copy_native(value dst, value src, value dst_x, value dst_y,
value src_x, value src_y, value w, value h) {
gdImageCopy(IM_VAL(dst), IM_VAL(src), Int_val(dst_x), Int_val(dst_y),
Int_val(src_x), Int_val(src_y), Int_val(w), Int_val(h));
return Val_unit;
}
value ml_image_copy(value *argv, int argc) {
#ifdef SAFER
assert (argc == 8);
#endif
return
ml_image_copy_native(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7]);
}
value ml_image_copy_resized_native(value dst, value src, value dst_x,
value dst_y, value src_x, value src_y,
value dst_w, value dst_h, value src_w,
value src_h) {
gdImageCopyResized(IM_VAL(dst), IM_VAL(src), Int_val(dst_x),
Int_val(dst_y), Int_val(src_x), Int_val(src_y),
Int_val(dst_w), Int_val(dst_h), Int_val(src_w),
Int_val(src_h));
return Val_unit;
}
value ml_image_copy_resized(value *argv, int argc) {
#ifdef SAFER
assert (argc == 10);
#endif
return
ml_image_copy_resized_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8], argv[9]);
}
value ml_image_copy_resampled_native(value dst, value src, value dst_x,
value dst_y, value src_x, value src_y,
value dst_w, value dst_h, value src_w,
value src_h) {
gdImageCopyResampled(IM_VAL(dst), IM_VAL(src), Int_val(dst_x),
Int_val(dst_y), Int_val(src_x), Int_val(src_y),
Int_val(dst_w), Int_val(dst_h), Int_val(src_w),
Int_val(src_h));
return Val_unit;
}
value ml_image_copy_resampled(value *argv, int argc) {
#ifdef SAFER
assert (argc == 10);
#endif
return
ml_image_copy_resampled_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8], argv[9]);
}
value ml_image_copy_rotated_native(value dst, value src, value dst_x,
value dst_y, value src_x, value src_y,
value w, value h, value angle) {
gdImageCopyRotated(IM_VAL(dst), IM_VAL(src), Double_val(dst_x),
Double_val(dst_y), Int_val(src_x), Int_val(src_y),
Int_val(w), Int_val(h), Int_val(angle));
return Val_unit;
}
value ml_image_copy_rotated(value *argv, int argc) {
#ifdef SAFER
assert (argc == 9);
#endif
return
ml_image_copy_rotated_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8]);
}
value ml_image_copy_merge_native(value dst, value src, value dst_x,
value dst_y, value src_x, value src_y,
value w, value h, value pct) {
gdImageCopyMerge(IM_VAL(dst), IM_VAL(src), Int_val(dst_x), Int_val(dst_y),
Int_val(src_x), Int_val(src_y), Int_val(w), Int_val(h),
Int_val(pct));
return Val_unit;
}
value ml_image_copy_merge(value *argv, int argc) {
#ifdef SAFER
assert (argc == 9);
#endif
return
ml_image_copy_merge_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8]);
}
value ml_image_copy_merge_gray_native(value dst, value src, value dst_x,
value dst_y, value src_x, value src_y,
value w, value h, value pct) {
gdImageCopyMergeGray(IM_VAL(dst), IM_VAL(src), Int_val(dst_x),
Int_val(dst_y), Int_val(src_x), Int_val(src_y),
Int_val(w), Int_val(h), Int_val(pct));
return Val_unit;
}
value ml_image_copy_merge_gray(value *argv, int argc) {
#ifdef SAFER
assert (argc == 9);
#endif
return
ml_image_copy_merge_gray_native(argv[0], argv[1], argv[2], argv[3],
argv[4], argv[5], argv[6], argv[7],
argv[8]);
}
value ml_image_palette_copy(value dst, value src) {
gdImagePaletteCopy(IM_VAL(dst), IM_VAL(src));
return Val_unit;
}
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