1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
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5 | #include <string.h> |
5 | #include <setjmp.h> |
6 | #include <setjmp.h> |
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7 | #include <math.h> |
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8 | |
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9 | #include <magic.h> |
6 | |
10 | |
7 | #include <jpeglib.h> |
11 | #include <jpeglib.h> |
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12 | #include <glib.h> |
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13 | #include <gtk/gtk.h> |
8 | #include <gdk-pixbuf/gdk-pixbuf.h> |
14 | #include <gdk-pixbuf/gdk-pixbuf.h> |
9 | |
15 | |
10 | #include <gperl.h> |
16 | #include <gperl.h> |
11 | #include <gtk2perl.h> |
17 | #include <gtk2perl.h> |
12 | |
18 | |
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19 | #include <assert.h> |
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20 | |
13 | #define IW 80 /* MUST match Schnauer.pm! */ |
21 | #define IW 80 /* MUST match Schnauzer.pm! */ |
14 | #define IH 60 /* MUST match Schnauer.pm! */ |
22 | #define IH 60 /* MUST match Schnauzer.pm! */ |
15 | |
23 | |
16 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
24 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
17 | |
25 | |
18 | #define LINELENGTH 240 |
26 | #define LINELENGTH 240 |
19 | |
27 | |
20 | #define ELLIPSIS "\xe2\x80\xa6" |
28 | #define ELLIPSIS "\xe2\x80\xa6" |
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29 | |
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30 | typedef char *octet_string; |
21 | |
31 | |
22 | struct jpg_err_mgr |
32 | struct jpg_err_mgr |
23 | { |
33 | { |
24 | struct jpeg_error_mgr err; |
34 | struct jpeg_error_mgr err; |
25 | jmp_buf setjmp_buffer; |
35 | jmp_buf setjmp_buffer; |
… | |
… | |
62 | |
72 | |
63 | *h &= 255; |
73 | *h &= 255; |
64 | } |
74 | } |
65 | } |
75 | } |
66 | |
76 | |
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77 | struct feature { |
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78 | float v1, v2, v3; // mean, square, cube |
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79 | int n; |
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80 | }; |
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81 | |
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82 | static void |
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83 | feature_init (struct feature *f) |
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84 | { |
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85 | f->v1 = 0.; |
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86 | f->v2 = 0.; |
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87 | f->v3 = 0.; |
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88 | f->n = 0; |
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89 | } |
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90 | |
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91 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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92 | // elmex ist schuld. |
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93 | static void |
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94 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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95 | { |
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96 | f->v1 += v; |
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97 | f->n += 1; |
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98 | } |
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99 | |
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100 | static void |
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101 | feature_finish_pass_1 (struct feature *f) |
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102 | { |
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103 | if (f->n < 1) |
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104 | return; |
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105 | |
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106 | f->v1 /= f->n; |
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107 | } |
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108 | |
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109 | static void |
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110 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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111 | { |
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112 | float d = v - f->v1; |
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113 | |
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114 | f->v2 += d * d; |
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115 | f->v3 += d * d * d; |
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116 | } |
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117 | |
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118 | static void |
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119 | feature_finish_pass_2 (struct feature *f) |
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120 | { |
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121 | if (f->n < 1) |
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122 | return; |
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123 | |
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124 | f->v2 /= f->n; |
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125 | f->v3 /= f->n; |
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126 | |
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127 | f->v1 /= 255.; |
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128 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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129 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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130 | } |
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131 | |
67 | static guint32 a85_val; |
132 | static guint32 a85_val; |
68 | static guint a85_cnt; |
133 | static guint a85_cnt; |
69 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
134 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
70 | |
135 | |
71 | static void |
136 | static void |
… | |
… | |
123 | |
188 | |
124 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
189 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
125 | |
190 | |
126 | PROTOTYPES: ENABLE |
191 | PROTOTYPES: ENABLE |
127 | |
192 | |
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193 | # missing function in perl. really :) |
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194 | int |
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195 | common_prefix_length (a, b) |
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196 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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197 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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198 | CODE: |
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199 | RETVAL = 0; |
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200 | |
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201 | while (*a == *b && *a) |
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202 | { |
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203 | RETVAL += (*a & 0xc0) != 0x80; |
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204 | a++, b++; |
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205 | } |
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206 | |
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207 | OUTPUT: |
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208 | RETVAL |
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209 | |
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210 | const char * |
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211 | magic (octet_string path) |
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212 | CODE: |
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213 | { |
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214 | static magic_t cookie; |
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215 | |
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216 | if (!cookie) |
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217 | { |
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218 | cookie = magic_open (MAGIC_NONE); |
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219 | |
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220 | if (cookie) |
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221 | magic_load (cookie, 0); |
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222 | else |
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223 | XSRETURN_UNDEF; |
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224 | } |
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225 | |
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226 | RETVAL = magic_file (cookie, path); |
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227 | } |
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228 | OUTPUT: |
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229 | RETVAL |
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230 | |
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231 | const char * |
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232 | magic_mime (octet_string path) |
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233 | CODE: |
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234 | { |
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235 | static magic_t cookie; |
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236 | |
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237 | if (!cookie) |
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238 | { |
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239 | cookie = magic_open (MAGIC_MIME); |
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240 | |
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241 | if (cookie) |
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242 | magic_load (cookie, 0); |
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243 | else |
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244 | XSRETURN_UNDEF; |
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245 | } |
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246 | |
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247 | RETVAL = magic_file (cookie, path); |
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248 | } |
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249 | OUTPUT: |
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250 | RETVAL |
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251 | |
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252 | # missing/broken in Gtk2 perl module |
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253 | |
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254 | void |
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255 | gdk_window_clear_hints (GdkWindow *window) |
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256 | CODE: |
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257 | gdk_window_set_geometry_hints (window, 0, 0); |
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258 | |
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259 | gboolean |
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260 | gdk_net_wm_supports (GdkAtom property) |
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261 | CODE: |
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262 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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263 | RETVAL = gdk_net_wm_supports (property); |
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264 | #else |
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265 | RETVAL = 0; |
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266 | #endif |
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267 | OUTPUT: |
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268 | RETVAL |
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269 | |
128 | GdkPixbuf_noinc * |
270 | GdkPixbuf_noinc * |
129 | transpose (GdkPixbuf *pb) |
271 | dealpha_expose (GdkPixbuf *pb) |
130 | CODE: |
272 | CODE: |
131 | { |
273 | { |
132 | int w = gdk_pixbuf_get_width (pb); |
274 | int w = gdk_pixbuf_get_width (pb); |
133 | int h = gdk_pixbuf_get_height (pb); |
275 | int h = gdk_pixbuf_get_height (pb); |
134 | int bpp = gdk_pixbuf_get_n_channels (pb); |
276 | int bpp = gdk_pixbuf_get_n_channels (pb); |
135 | int x, y, i; |
277 | int x, y, i; |
136 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
278 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
137 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
279 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
138 | |
280 | |
139 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
281 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
140 | |
282 | |
141 | dst = gdk_pixbuf_get_pixels (RETVAL); |
283 | dst = gdk_pixbuf_get_pixels (RETVAL); |
142 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
284 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
143 | |
285 | |
144 | for (y = 0; y < h; y++) |
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145 | for (x = 0; x < w; x++) |
286 | for (x = 0; x < w; x++) |
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287 | for (y = 0; y < h; y++) |
146 | for (i = 0; i < bpp; i++) |
288 | for (i = 0; i < 3; i++) |
147 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
289 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
148 | } |
290 | } |
149 | OUTPUT: |
291 | OUTPUT: |
150 | RETVAL |
292 | RETVAL |
151 | |
293 | |
152 | GdkPixbuf_noinc * |
294 | GdkPixbuf_noinc * |
153 | flop (GdkPixbuf *pb) |
295 | rotate (GdkPixbuf *pb, int angle) |
154 | CODE: |
296 | CODE: |
155 | { |
297 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
156 | int w = gdk_pixbuf_get_width (pb); |
298 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
157 | int h = gdk_pixbuf_get_height (pb); |
299 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
158 | int bpp = gdk_pixbuf_get_n_channels (pb); |
300 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
159 | int x, y, i; |
301 | : angle); |
160 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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161 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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162 | |
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163 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
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164 | |
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165 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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166 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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167 | |
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168 | for (y = 0; y < h; y++) |
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169 | for (x = 0; x < w; x++) |
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170 | for (i = 0; i < bpp; i++) |
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171 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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172 | } |
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173 | OUTPUT: |
302 | OUTPUT: |
174 | RETVAL |
303 | RETVAL |
175 | |
304 | |
176 | GdkPixbuf_noinc * |
305 | GdkPixbuf_noinc * |
177 | load_jpeg (char *path, int thumbnail=0) |
306 | load_jpeg (SV *path, int thumbnail=0) |
178 | CODE: |
307 | CODE: |
179 | { |
308 | { |
180 | struct jpeg_decompress_struct cinfo; |
309 | struct jpeg_decompress_struct cinfo; |
181 | struct jpg_err_mgr jerr; |
310 | struct jpg_err_mgr jerr; |
182 | guchar *data; |
311 | guchar *data; |
183 | int rs; |
312 | int rs; |
184 | FILE *fp; |
313 | FILE *fp; |
185 | volatile GdkPixbuf *pb = 0; |
314 | volatile GdkPixbuf *pb = 0; |
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315 | |
186 | RETVAL = 0; |
316 | RETVAL = 0; |
187 | |
317 | |
188 | if (!(fp = fopen (path, "rb"))) |
318 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
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319 | |
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320 | if (!fp) |
189 | XSRETURN_UNDEF; |
321 | XSRETURN_UNDEF; |
190 | |
322 | |
191 | cinfo.err = jpeg_std_error (&jerr.err); |
323 | cinfo.err = jpeg_std_error (&jerr.err); |
192 | |
324 | |
193 | jerr.err.error_exit = cv_error_exit; |
325 | jerr.err.error_exit = cv_error_exit; |
… | |
… | |
224 | { |
356 | { |
225 | cinfo.dct_method = JDCT_FASTEST; |
357 | cinfo.dct_method = JDCT_FASTEST; |
226 | cinfo.do_fancy_upsampling = FALSE; |
358 | cinfo.do_fancy_upsampling = FALSE; |
227 | |
359 | |
228 | while (cinfo.scale_denom < 8 |
360 | while (cinfo.scale_denom < 8 |
229 | && (cinfo.output_width >> 1) >= IW |
361 | && cinfo.output_width >= IW*4 |
230 | && (cinfo.output_height >> 1) >= IH) |
362 | && cinfo.output_height >= IH*4) |
231 | { |
363 | { |
232 | cinfo.scale_denom <<= 1; |
364 | cinfo.scale_denom <<= 1; |
233 | jpeg_calc_output_dimensions (&cinfo); |
365 | jpeg_calc_output_dimensions (&cinfo); |
234 | } |
366 | } |
235 | } |
367 | } |
… | |
… | |
264 | jpeg_destroy_decompress (&cinfo); |
396 | jpeg_destroy_decompress (&cinfo); |
265 | } |
397 | } |
266 | OUTPUT: |
398 | OUTPUT: |
267 | RETVAL |
399 | RETVAL |
268 | |
400 | |
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401 | void |
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402 | compare (GdkPixbuf *a, GdkPixbuf *b) |
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403 | PPCODE: |
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404 | { |
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405 | int w = gdk_pixbuf_get_width (a); |
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406 | int h = gdk_pixbuf_get_height (a); |
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407 | |
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408 | int sa = gdk_pixbuf_get_rowstride (a); |
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409 | int sb = gdk_pixbuf_get_rowstride (b); |
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410 | |
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411 | guchar *pa = gdk_pixbuf_get_pixels (a); |
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412 | guchar *pb = gdk_pixbuf_get_pixels (b); |
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413 | |
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414 | int x, y; |
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415 | |
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416 | assert (w == gdk_pixbuf_get_width (b)); |
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417 | assert (h == gdk_pixbuf_get_height (b)); |
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418 | |
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419 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
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420 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
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421 | |
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422 | double diff = 0.; |
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423 | int peak = 0; |
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424 | |
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425 | if (w && h) |
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426 | for (y = 0; y < h; y++) |
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427 | { |
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428 | guchar *pa_ = pa + y * sa; |
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429 | guchar *pb_ = pb + y * sb; |
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430 | |
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431 | for (x = 0; x < w; x++) |
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432 | { |
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433 | int d; |
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434 | |
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435 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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436 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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437 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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438 | } |
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439 | } |
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440 | |
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441 | EXTEND (SP, 2); |
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442 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
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443 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
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444 | } |
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445 | |
269 | ############################################################################# |
446 | ############################################################################# |
270 | |
447 | |
271 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
448 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
272 | |
449 | |
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450 | # currently only works for filenames (octet strings) |
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451 | |
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452 | SV * |
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453 | foldcase (SV *pathsv) |
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454 | PROTOTYPE: $ |
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455 | CODE: |
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456 | { |
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457 | STRLEN plen; |
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458 | U8 *path = (U8 *)SvPV (pathsv, plen); |
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459 | U8 *pend = path + plen; |
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460 | U8 dst [plen * 6 * 3], *dstp = dst; |
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461 | |
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462 | while (path < pend) |
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463 | { |
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464 | U8 ch = *path; |
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465 | |
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466 | if (ch >= 'a' && ch <= 'z') |
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467 | *dstp++ = *path++; |
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468 | else if (ch >= 'A' && ch <= 'Z') |
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469 | *dstp++ = *path++ + ('a' - 'A'); |
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470 | else if (ch >= '0' && ch <= '9') |
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471 | { |
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472 | STRLEN el, nl = 0; |
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473 | while (*path >= '0' && *path <= '9' && path < pend) |
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474 | path++, nl++; |
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475 | |
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476 | for (el = nl; el < 6; el++) |
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477 | *dstp++ = '0'; |
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478 | |
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479 | memcpy (dstp, path - nl, nl); |
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480 | dstp += nl; |
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481 | } |
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482 | else |
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483 | *dstp++ = *path++; |
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484 | #if 0 |
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485 | else |
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486 | { |
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487 | STRLEN cl; |
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488 | to_utf8_fold (path, dstp, &cl); |
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489 | dstp += cl; |
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490 | path += is_utf8_char (path); |
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491 | } |
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492 | #endif |
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493 | } |
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494 | |
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495 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
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496 | } |
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497 | OUTPUT: |
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498 | RETVAL |
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499 | |
273 | GdkPixbuf_noinc * |
500 | GdkPixbuf_noinc * |
274 | p7_to_pb (int w, int h, guchar *src) |
501 | p7_to_pb (int w, int h, SV *src_sv) |
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502 | PROTOTYPE: @ |
275 | CODE: |
503 | CODE: |
276 | { |
504 | { |
277 | int x, y; |
505 | int x, y; |
278 | guchar *dst, *d; |
506 | guchar *dst, *d; |
279 | int dstr; |
507 | int dstr; |
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508 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
280 | |
509 | |
281 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
510 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
282 | dst = gdk_pixbuf_get_pixels (RETVAL); |
511 | dst = gdk_pixbuf_get_pixels (RETVAL); |
283 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
512 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
284 | |
513 | |
… | |
… | |
293 | } |
522 | } |
294 | } |
523 | } |
295 | OUTPUT: |
524 | OUTPUT: |
296 | RETVAL |
525 | RETVAL |
297 | |
526 | |
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527 | ############################################################################# |
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528 | |
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529 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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530 | |
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531 | void |
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532 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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533 | CODE: |
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534 | { |
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535 | int w = gdk_pixbuf_get_width (pb); |
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536 | int h = gdk_pixbuf_get_height (pb); |
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537 | int x, y, i; |
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538 | guchar *dst; |
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539 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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540 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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541 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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542 | |
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|
543 | a85_init (); |
|
|
544 | |
|
|
545 | for (y = 0; y < h; y++) |
|
|
546 | for (x = 0; x < w; x++) |
|
|
547 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
548 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
549 | |
|
|
550 | a85_finish (fp); |
|
|
551 | } |
|
|
552 | |
|
|
553 | void |
|
|
554 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
555 | CODE: |
|
|
556 | { |
|
|
557 | int w = gdk_pixbuf_get_width (pb); |
|
|
558 | int h = gdk_pixbuf_get_height (pb); |
|
|
559 | int x, y, i; |
|
|
560 | guchar *dst; |
|
|
561 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
562 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
563 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
564 | |
|
|
565 | for (y = 0; y < h; y++) |
|
|
566 | for (x = 0; x < w; x++) |
|
|
567 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
568 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
569 | } |
|
|
570 | |
|
|
571 | ############################################################################# |
|
|
572 | |
|
|
573 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
574 | |
298 | SV * |
575 | SV * |
299 | pb_to_p7 (GdkPixbuf *pb) |
576 | pb_to_hv84 (GdkPixbuf *pb) |
300 | CODE: |
577 | CODE: |
301 | { |
578 | { |
302 | int w = gdk_pixbuf_get_width (pb); |
579 | int w = gdk_pixbuf_get_width (pb); |
303 | int h = gdk_pixbuf_get_height (pb); |
580 | int h = gdk_pixbuf_get_height (pb); |
304 | int x, y; |
581 | int x, y; |
305 | guchar *dst; |
582 | guchar *dst; |
306 | int bpp = gdk_pixbuf_get_n_channels (pb); |
583 | int bpp = gdk_pixbuf_get_n_channels (pb); |
307 | guchar *src = gdk_pixbuf_get_pixels (pb); |
584 | guchar *src = gdk_pixbuf_get_pixels (pb); |
308 | int sstr = gdk_pixbuf_get_rowstride (pb); |
585 | int sstr = gdk_pixbuf_get_rowstride (pb); |
309 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
310 | int seed = 77; |
|
|
311 | |
|
|
312 | RETVAL = newSV (w * h); |
|
|
313 | SvPOK_only (RETVAL); |
|
|
314 | SvCUR_set (RETVAL, w * h); |
|
|
315 | |
|
|
316 | dst = SvPVX (RETVAL); |
|
|
317 | |
|
|
318 | memset (Er, 0, sizeof (int) * IW); |
|
|
319 | memset (Eg, 0, sizeof (int) * IW); |
|
|
320 | memset (Eb, 0, sizeof (int) * IW); |
|
|
321 | |
|
|
322 | /* some primitive error distribution + random dithering */ |
|
|
323 | |
|
|
324 | for (y = 0; y < h; y++) |
|
|
325 | { |
|
|
326 | int er = 0, eg = 0, eb = 0; |
|
|
327 | |
|
|
328 | for (x = 0; x < w; x++) |
|
|
329 | { |
|
|
330 | int r, g, b; |
|
|
331 | guchar *p = src + x * bpp + y * sstr; |
|
|
332 | |
|
|
333 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
|
|
334 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
|
|
335 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
|
|
336 | |
|
|
337 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
|
|
338 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
339 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
340 | |
|
|
341 | er += p[0] - (r * 255 + 4) / 7; |
|
|
342 | eg += p[1] - (g * 255 + 4) / 7; |
|
|
343 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
344 | |
|
|
345 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
|
|
346 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
|
|
347 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
|
|
348 | |
|
|
349 | *dst++ = r << 5 | g << 2 | b; |
|
|
350 | } |
|
|
351 | } |
|
|
352 | } |
|
|
353 | OUTPUT: |
|
|
354 | RETVAL |
|
|
355 | |
|
|
356 | SV * |
|
|
357 | make_histogram (SV *ar) |
|
|
358 | CODE: |
|
|
359 | { |
|
|
360 | int i; |
|
|
361 | AV *av, *result; |
|
|
362 | |
|
|
363 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
364 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
365 | |
|
|
366 | av = (AV *) SvRV (ar); |
|
|
367 | result = newAV (); |
|
|
368 | |
|
|
369 | for (i = 0; i <= av_len (av); ++i) |
|
|
370 | { |
|
|
371 | const int HISTSIZE = 64; |
|
|
372 | |
|
|
373 | int j; |
|
|
374 | SV *sv = *av_fetch (av, i, 1); |
|
|
375 | STRLEN len; |
|
|
376 | char *buf = SvPVbyte (sv, len); |
|
|
377 | |
|
|
378 | int tmphist[HISTSIZE]; |
|
|
379 | float *hist; |
|
|
380 | |
|
|
381 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
382 | SvPOK_on (histsv); |
|
|
383 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
384 | hist = (float *)SvPVX (histsv); |
|
|
385 | |
|
|
386 | Zero (tmphist, sizeof (tmphist), char); |
|
|
387 | |
|
|
388 | for (j = len; j--; ) |
|
|
389 | { |
|
|
390 | unsigned int idx |
|
|
391 | = ((*buf & 0xc0) >> 2) |
|
|
392 | | ((*buf & 0x18) >> 1) |
|
|
393 | | (*buf & 0x03); |
|
|
394 | |
|
|
395 | ++tmphist[idx]; |
|
|
396 | ++buf; |
|
|
397 | } |
|
|
398 | |
|
|
399 | for (j = 0; j < HISTSIZE; ++j) |
|
|
400 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
401 | |
|
|
402 | av_push (result, histsv); |
|
|
403 | } |
|
|
404 | |
|
|
405 | RETVAL = newRV_noinc ((SV *)result); |
|
|
406 | } |
|
|
407 | OUTPUT: |
|
|
408 | RETVAL |
|
|
409 | |
|
|
410 | ############################################################################# |
|
|
411 | |
|
|
412 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
413 | |
|
|
414 | void |
|
|
415 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
416 | CODE: |
|
|
417 | { |
|
|
418 | int w = gdk_pixbuf_get_width (pb); |
|
|
419 | int h = gdk_pixbuf_get_height (pb); |
|
|
420 | int x, y, i; |
|
|
421 | guchar *dst; |
|
|
422 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
423 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
424 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
425 | |
|
|
426 | a85_init (); |
|
|
427 | |
|
|
428 | for (y = 0; y < h; y++) |
|
|
429 | for (x = 0; x < w; x++) |
|
|
430 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
431 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
432 | |
|
|
433 | a85_finish (fp); |
|
|
434 | } |
|
|
435 | |
|
|
436 | void |
|
|
437 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
438 | CODE: |
|
|
439 | { |
|
|
440 | int w = gdk_pixbuf_get_width (pb); |
|
|
441 | int h = gdk_pixbuf_get_height (pb); |
|
|
442 | int x, y, i; |
|
|
443 | guchar *dst; |
|
|
444 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
445 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
446 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
447 | |
|
|
448 | for (y = 0; y < h; y++) |
|
|
449 | for (x = 0; x < w; x++) |
|
|
450 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
451 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
452 | } |
|
|
453 | |
|
|
454 | ############################################################################# |
|
|
455 | |
|
|
456 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
457 | |
|
|
458 | SV * |
|
|
459 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
460 | CODE: |
|
|
461 | { |
|
|
462 | int w = gdk_pixbuf_get_width (pb); |
|
|
463 | int h = gdk_pixbuf_get_height (pb); |
|
|
464 | int x, y; |
|
|
465 | guchar *dst; |
|
|
466 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
467 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
468 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
469 | |
586 | |
470 | RETVAL = newSV (6 * 8 * 12 / 8); |
587 | RETVAL = newSV (6 * 8 * 12 / 8); |
471 | SvPOK_only (RETVAL); |
588 | SvPOK_only (RETVAL); |
472 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
589 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
473 | |
590 | |
474 | dst = SvPVX (RETVAL); |
591 | dst = (guchar *)SvPVX (RETVAL); |
475 | |
592 | |
476 | /* some primitive error distribution + random dithering */ |
593 | /* some primitive error distribution + random dithering */ |
477 | |
594 | |
478 | for (y = 0; y < h; y++) |
595 | for (y = 0; y < h; y++) |
479 | { |
596 | { |
… | |
… | |
537 | } |
654 | } |
538 | } |
655 | } |
539 | OUTPUT: |
656 | OUTPUT: |
540 | RETVAL |
657 | RETVAL |
541 | |
658 | |
|
|
659 | ############################################################################# |
542 | |
660 | |
|
|
661 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
543 | |
662 | |
|
|
663 | SV * |
|
|
664 | extract_features (SV *ar) |
|
|
665 | CODE: |
|
|
666 | { |
|
|
667 | int i; |
|
|
668 | AV *av, *result; |
|
|
669 | |
|
|
670 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
671 | croak ("Not an array ref as first argument to extract_features"); |
|
|
672 | |
|
|
673 | av = (AV *) SvRV (ar); |
|
|
674 | result = newAV (); |
|
|
675 | |
|
|
676 | for (i = 0; i <= av_len (av); ++i) |
|
|
677 | { |
|
|
678 | SV *sv = *av_fetch (av, i, 1); |
|
|
679 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
680 | |
|
|
681 | SvPOK_on (histsv); |
|
|
682 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
683 | float *hist = (float *)SvPVX (histsv); |
|
|
684 | |
|
|
685 | struct feature f_h, f_s, f_v; |
|
|
686 | feature_init (&f_h); |
|
|
687 | feature_init (&f_s); |
|
|
688 | feature_init (&f_v); |
|
|
689 | |
|
|
690 | { |
|
|
691 | STRLEN len; |
|
|
692 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
693 | while (len >= 3) |
|
|
694 | { |
|
|
695 | unsigned int r, g, b, h, s, v; |
|
|
696 | r = *buf++; g = *buf++; b = *buf++; |
|
|
697 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
698 | |
|
|
699 | feature_update_pass_1 (&f_h, h); |
|
|
700 | feature_update_pass_1 (&f_s, s); |
|
|
701 | feature_update_pass_1 (&f_v, v); |
|
|
702 | |
|
|
703 | len -= 3; |
|
|
704 | } |
|
|
705 | |
|
|
706 | feature_finish_pass_1 (&f_h); |
|
|
707 | feature_finish_pass_1 (&f_s); |
|
|
708 | feature_finish_pass_1 (&f_v); |
|
|
709 | } |
|
|
710 | |
|
|
711 | { |
|
|
712 | STRLEN len; |
|
|
713 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
714 | while (len >= 3) |
|
|
715 | { |
|
|
716 | unsigned int r, g, b, h, s, v; |
|
|
717 | r = *buf++; g = *buf++; b = *buf++; |
|
|
718 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
719 | |
|
|
720 | feature_update_pass_2 (&f_h, h); |
|
|
721 | feature_update_pass_2 (&f_s, s); |
|
|
722 | feature_update_pass_2 (&f_v, v); |
|
|
723 | |
|
|
724 | len -= 3; |
|
|
725 | } |
|
|
726 | |
|
|
727 | feature_finish_pass_2 (&f_h); |
|
|
728 | feature_finish_pass_2 (&f_s); |
|
|
729 | feature_finish_pass_2 (&f_v); |
|
|
730 | } |
|
|
731 | |
|
|
732 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
733 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
734 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
735 | |
|
|
736 | av_push (result, histsv); |
|
|
737 | } |
|
|
738 | |
|
|
739 | RETVAL = newRV_noinc ((SV *)result); |
|
|
740 | } |
|
|
741 | OUTPUT: |
|
|
742 | RETVAL |
|
|
743 | |