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2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include <string.h> |
5 | #include <string.h> |
6 | #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> |
7 | |
10 | |
8 | #include <jpeglib.h> |
11 | #include <jpeglib.h> |
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12 | #include <glib.h> |
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13 | #include <gtk/gtk.h> |
9 | #include <gdk-pixbuf/gdk-pixbuf.h> |
14 | #include <gdk-pixbuf/gdk-pixbuf.h> |
10 | |
15 | |
11 | #include <gperl.h> |
16 | #include <gperl.h> |
12 | #include <gtk2perl.h> |
17 | #include <gtk2perl.h> |
13 | |
18 | |
14 | #define IW 80 /* MUST match Schnauer.pm! */ |
19 | #define IW 80 /* MUST match Schnauzer.pm! */ |
15 | #define IH 60 /* MUST match Schnauer.pm! */ |
20 | #define IH 60 /* MUST match Schnauzer.pm! */ |
16 | |
21 | |
17 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
22 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
18 | |
23 | |
19 | #define LINELENGTH 240 |
24 | #define LINELENGTH 240 |
20 | |
25 | |
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63 | |
68 | |
64 | *h &= 255; |
69 | *h &= 255; |
65 | } |
70 | } |
66 | } |
71 | } |
67 | |
72 | |
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73 | struct feature { |
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74 | float v1, v2, v3; // mean, square, cube |
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75 | int n; |
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76 | }; |
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77 | |
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78 | static void |
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79 | feature_init (struct feature *f) |
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80 | { |
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81 | f->v1 = 0.; |
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82 | f->v2 = 0.; |
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83 | f->v3 = 0.; |
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84 | f->n = 0; |
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85 | } |
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86 | |
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87 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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88 | // elmex ist schuld. |
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89 | static void |
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90 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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91 | { |
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92 | f->v1 += v; |
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93 | f->n += 1; |
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94 | } |
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95 | |
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96 | static void |
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97 | feature_finish_pass_1 (struct feature *f) |
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98 | { |
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99 | if (f->n < 1) |
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100 | return; |
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101 | |
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102 | f->v1 /= f->n; |
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103 | } |
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104 | |
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105 | static void |
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106 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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107 | { |
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108 | float d = v - f->v1; |
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109 | |
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110 | f->v2 += d * d; |
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111 | f->v3 += d * d * d; |
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112 | } |
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113 | |
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114 | static void |
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115 | feature_finish_pass_2 (struct feature *f) |
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116 | { |
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117 | if (f->n < 1) |
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118 | return; |
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119 | |
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120 | f->v2 /= f->n; |
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121 | f->v3 /= f->n; |
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122 | |
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123 | // this is a peculiar weightung, but it works fine |
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124 | f->v1 /= 255.; |
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125 | f->v2 /= 128. * 128.; |
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126 | f->v3 /= 128. * 128. * 64.; |
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127 | } |
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128 | |
68 | static guint32 a85_val; |
129 | static guint32 a85_val; |
69 | static guint a85_cnt; |
130 | static guint a85_cnt; |
70 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
131 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
71 | |
132 | |
72 | static void |
133 | static void |
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124 | |
185 | |
125 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
186 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
126 | |
187 | |
127 | PROTOTYPES: ENABLE |
188 | PROTOTYPES: ENABLE |
128 | |
189 | |
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190 | # missing function in perl. really :) |
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191 | int |
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192 | common_prefix_length (a, b) |
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193 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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194 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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195 | CODE: |
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196 | RETVAL = 0; |
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197 | |
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198 | while (*a == *b && *a) |
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199 | { |
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200 | RETVAL += (*a & 0xc0) != 0x80; |
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201 | a++, b++; |
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202 | } |
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203 | |
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204 | OUTPUT: |
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205 | RETVAL |
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206 | |
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207 | const char * |
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208 | magic (const char *path) |
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209 | CODE: |
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210 | { |
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211 | static magic_t cookie; |
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212 | |
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213 | if (!cookie) |
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214 | { |
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215 | cookie = magic_open (MAGIC_NONE); |
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216 | |
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217 | if (cookie) |
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218 | magic_load (cookie, 0); |
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219 | else |
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220 | XSRETURN_UNDEF; |
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221 | } |
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222 | |
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223 | RETVAL = magic_file (cookie, path); |
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224 | } |
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225 | OUTPUT: |
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226 | RETVAL |
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227 | |
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228 | const char * |
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229 | magic_mime (const char *path) |
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230 | CODE: |
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231 | { |
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232 | static magic_t cookie; |
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233 | |
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234 | if (!cookie) |
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235 | { |
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236 | cookie = magic_open (MAGIC_MIME); |
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237 | |
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238 | if (cookie) |
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239 | magic_load (cookie, 0); |
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240 | else |
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241 | XSRETURN_UNDEF; |
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242 | } |
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243 | |
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244 | RETVAL = magic_file (cookie, path); |
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245 | } |
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246 | OUTPUT: |
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247 | RETVAL |
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248 | |
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249 | # missing in Gtk2 perl module |
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250 | |
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251 | gboolean |
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252 | gdk_net_wm_supports (GdkAtom property) |
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253 | CODE: |
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254 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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255 | RETVAL = gdk_net_wm_supports (property); |
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256 | #else |
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257 | RETVAL = 0; |
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258 | #endif |
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259 | OUTPUT: |
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260 | RETVAL |
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261 | |
129 | GdkPixbuf_noinc * |
262 | GdkPixbuf_noinc * |
130 | transpose (GdkPixbuf *pb) |
263 | dealpha_expose (GdkPixbuf *pb) |
131 | CODE: |
264 | CODE: |
132 | { |
265 | { |
133 | int w = gdk_pixbuf_get_width (pb); |
266 | int w = gdk_pixbuf_get_width (pb); |
134 | int h = gdk_pixbuf_get_height (pb); |
267 | int h = gdk_pixbuf_get_height (pb); |
135 | int bpp = gdk_pixbuf_get_n_channels (pb); |
268 | int bpp = gdk_pixbuf_get_n_channels (pb); |
136 | int x, y, i; |
269 | int x, y, i; |
137 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
270 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
138 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
271 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
139 | |
272 | |
140 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
273 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
141 | |
274 | |
142 | dst = gdk_pixbuf_get_pixels (RETVAL); |
275 | dst = gdk_pixbuf_get_pixels (RETVAL); |
143 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
276 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
144 | |
277 | |
145 | for (y = 0; y < h; y++) |
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146 | for (x = 0; x < w; x++) |
278 | for (x = 0; x < w; x++) |
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279 | for (y = 0; y < h; y++) |
147 | for (i = 0; i < bpp; i++) |
280 | for (i = 0; i < 3; i++) |
148 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
281 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
149 | } |
282 | } |
150 | OUTPUT: |
283 | OUTPUT: |
151 | RETVAL |
284 | RETVAL |
152 | |
285 | |
153 | GdkPixbuf_noinc * |
286 | GdkPixbuf_noinc * |
154 | flop (GdkPixbuf *pb) |
287 | rotate (GdkPixbuf *pb, int angle) |
155 | CODE: |
288 | CODE: |
156 | { |
289 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
157 | int w = gdk_pixbuf_get_width (pb); |
290 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
158 | int h = gdk_pixbuf_get_height (pb); |
291 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
159 | int bpp = gdk_pixbuf_get_n_channels (pb); |
292 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
160 | int x, y, i; |
293 | : angle); |
161 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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162 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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163 | |
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164 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
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165 | |
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166 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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167 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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168 | |
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169 | for (y = 0; y < h; y++) |
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170 | for (x = 0; x < w; x++) |
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171 | for (i = 0; i < bpp; i++) |
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172 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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173 | } |
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174 | OUTPUT: |
294 | OUTPUT: |
175 | RETVAL |
295 | RETVAL |
176 | |
296 | |
177 | GdkPixbuf_noinc * |
297 | GdkPixbuf_noinc * |
178 | load_jpeg (char *path, int thumbnail=0) |
298 | load_jpeg (SV *path, int thumbnail=0) |
179 | CODE: |
299 | CODE: |
180 | { |
300 | { |
181 | struct jpeg_decompress_struct cinfo; |
301 | struct jpeg_decompress_struct cinfo; |
182 | struct jpg_err_mgr jerr; |
302 | struct jpg_err_mgr jerr; |
183 | guchar *data; |
303 | guchar *data; |
184 | int rs; |
304 | int rs; |
185 | FILE *fp; |
305 | FILE *fp; |
186 | volatile GdkPixbuf *pb = 0; |
306 | volatile GdkPixbuf *pb = 0; |
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307 | |
187 | RETVAL = 0; |
308 | RETVAL = 0; |
188 | |
309 | |
189 | if (!(fp = fopen (path, "rb"))) |
310 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
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311 | |
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312 | if (!fp) |
190 | XSRETURN_UNDEF; |
313 | XSRETURN_UNDEF; |
191 | |
314 | |
192 | cinfo.err = jpeg_std_error (&jerr.err); |
315 | cinfo.err = jpeg_std_error (&jerr.err); |
193 | |
316 | |
194 | jerr.err.error_exit = cv_error_exit; |
317 | jerr.err.error_exit = cv_error_exit; |
… | |
… | |
225 | { |
348 | { |
226 | cinfo.dct_method = JDCT_FASTEST; |
349 | cinfo.dct_method = JDCT_FASTEST; |
227 | cinfo.do_fancy_upsampling = FALSE; |
350 | cinfo.do_fancy_upsampling = FALSE; |
228 | |
351 | |
229 | while (cinfo.scale_denom < 8 |
352 | while (cinfo.scale_denom < 8 |
230 | && (cinfo.output_width >> 1) >= IW |
353 | && cinfo.output_width >= IW*4 |
231 | && (cinfo.output_height >> 1) >= IH) |
354 | && cinfo.output_height >= IH*4) |
232 | { |
355 | { |
233 | cinfo.scale_denom <<= 1; |
356 | cinfo.scale_denom <<= 1; |
234 | jpeg_calc_output_dimensions (&cinfo); |
357 | jpeg_calc_output_dimensions (&cinfo); |
235 | } |
358 | } |
236 | } |
359 | } |
… | |
… | |
265 | jpeg_destroy_decompress (&cinfo); |
388 | jpeg_destroy_decompress (&cinfo); |
266 | } |
389 | } |
267 | OUTPUT: |
390 | OUTPUT: |
268 | RETVAL |
391 | RETVAL |
269 | |
392 | |
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393 | void |
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394 | compare (GdkPixbuf *a, GdkPixbuf *b) |
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395 | PPCODE: |
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396 | { |
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397 | int w = gdk_pixbuf_get_width (a); |
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398 | int h = gdk_pixbuf_get_height (a); |
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399 | int sa = gdk_pixbuf_get_rowstride (a); |
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400 | int sb = gdk_pixbuf_get_rowstride (b); |
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401 | |
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402 | guchar *pa = gdk_pixbuf_get_pixels (a); |
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403 | guchar *pb = gdk_pixbuf_get_pixels (b); |
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404 | |
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405 | int x, y; |
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406 | |
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407 | assert (w == gdk_pixbuf_get_width (b)); |
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408 | assert (h == gdk_pixbuf_get_height (b)); |
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409 | |
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410 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
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411 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
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412 | |
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413 | double diff = 0.; |
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414 | int peak = 0; |
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415 | |
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416 | if (w && h) |
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417 | for (y = 0; y < h; y++) |
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418 | { |
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419 | guchar *pa_ = pa + y * sa; |
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420 | guchar *pb_ = pb + y * sb; |
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421 | |
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422 | for (x = 0; x < w; x++) |
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423 | { |
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424 | int d; |
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425 | |
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426 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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427 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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428 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
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429 | } |
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430 | } |
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431 | |
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432 | EXTEND (SP, 2); |
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433 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
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434 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
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435 | } |
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436 | |
270 | ############################################################################# |
437 | ############################################################################# |
271 | |
438 | |
272 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
439 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
273 | |
440 | |
274 | SV * |
441 | SV * |
275 | foldcase (SV *pathsv) |
442 | foldcase (SV *pathsv) |
276 | PROTOTYPE: $ |
443 | PROTOTYPE: $ |
277 | CODE: |
444 | CODE: |
278 | { |
445 | { |
279 | STRLEN plen; |
446 | STRLEN plen; |
280 | U8 *path = SvPVutf8 (pathsv, plen); |
447 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
281 | U8 *pend = path + plen; |
448 | U8 *pend = path + plen; |
282 | U8 dst [plen * 6 * 3], *dstp = dst; |
449 | U8 dst [plen * 6 * 3], *dstp = dst; |
283 | |
450 | |
284 | while (path < pend) |
451 | while (path < pend) |
285 | { |
452 | { |
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453 | U8 ch = *path; |
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454 | |
286 | if (*path >= '0' && *path <= '9') |
455 | if (ch >= 'a' && ch <= 'z') |
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456 | *dstp++ = *path++; |
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457 | else if (ch >= '0' && ch <= '9') |
287 | { |
458 | { |
288 | STRLEN el, nl = 0; |
459 | STRLEN el, nl = 0; |
289 | while (*path >= '0' && *path <= '9') |
460 | while (*path >= '0' && *path <= '9' && path < pend) |
290 | path++, nl++; |
461 | path++, nl++; |
291 | |
462 | |
292 | for (el = nl; el < 6; el++) |
463 | for (el = nl; el < 6; el++) |
293 | *dstp++ = '0'; |
464 | *dstp++ = '0'; |
294 | |
465 | |
… | |
… | |
302 | dstp += cl; |
473 | dstp += cl; |
303 | path += is_utf8_char (path); |
474 | path += is_utf8_char (path); |
304 | } |
475 | } |
305 | } |
476 | } |
306 | |
477 | |
307 | RETVAL = newSVpvn (dst, dstp - dst); |
478 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
308 | } |
479 | } |
309 | OUTPUT: |
480 | OUTPUT: |
310 | RETVAL |
481 | RETVAL |
311 | |
482 | |
312 | GdkPixbuf_noinc * |
483 | GdkPixbuf_noinc * |
313 | p7_to_pb (int w, int h, guchar *src) |
484 | p7_to_pb (int w, int h, SV *src_sv) |
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485 | PROTOTYPE: @ |
314 | CODE: |
486 | CODE: |
315 | { |
487 | { |
316 | int x, y; |
488 | int x, y; |
317 | guchar *dst, *d; |
489 | guchar *dst, *d; |
318 | int dstr; |
490 | int dstr; |
|
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491 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
319 | |
492 | |
320 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
493 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
321 | dst = gdk_pixbuf_get_pixels (RETVAL); |
494 | dst = gdk_pixbuf_get_pixels (RETVAL); |
322 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
495 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
323 | |
496 | |
… | |
… | |
332 | } |
505 | } |
333 | } |
506 | } |
334 | OUTPUT: |
507 | OUTPUT: |
335 | RETVAL |
508 | RETVAL |
336 | |
509 | |
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510 | ############################################################################# |
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511 | |
|
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512 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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513 | |
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514 | void |
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515 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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516 | CODE: |
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517 | { |
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518 | int w = gdk_pixbuf_get_width (pb); |
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519 | int h = gdk_pixbuf_get_height (pb); |
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520 | int x, y, i; |
|
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521 | guchar *dst; |
|
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522 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
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523 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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524 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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525 | |
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526 | a85_init (); |
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527 | |
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528 | for (y = 0; y < h; y++) |
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529 | for (x = 0; x < w; x++) |
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530 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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531 | a85_push (fp, src [x * bpp + y * sstr + i]); |
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532 | |
|
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533 | a85_finish (fp); |
|
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534 | } |
|
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535 | |
|
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536 | void |
|
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537 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
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538 | CODE: |
|
|
539 | { |
|
|
540 | int w = gdk_pixbuf_get_width (pb); |
|
|
541 | int h = gdk_pixbuf_get_height (pb); |
|
|
542 | int x, y, i; |
|
|
543 | guchar *dst; |
|
|
544 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
545 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
546 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
547 | |
|
|
548 | for (y = 0; y < h; y++) |
|
|
549 | for (x = 0; x < w; x++) |
|
|
550 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
551 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
552 | } |
|
|
553 | |
|
|
554 | ############################################################################# |
|
|
555 | |
|
|
556 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
557 | |
337 | SV * |
558 | SV * |
338 | pb_to_p7 (GdkPixbuf *pb) |
559 | pb_to_hv84 (GdkPixbuf *pb) |
339 | CODE: |
560 | CODE: |
340 | { |
561 | { |
341 | int w = gdk_pixbuf_get_width (pb); |
562 | int w = gdk_pixbuf_get_width (pb); |
342 | int h = gdk_pixbuf_get_height (pb); |
563 | int h = gdk_pixbuf_get_height (pb); |
343 | int x, y; |
564 | int x, y; |
344 | guchar *dst; |
565 | guchar *dst; |
345 | int bpp = gdk_pixbuf_get_n_channels (pb); |
566 | int bpp = gdk_pixbuf_get_n_channels (pb); |
346 | guchar *src = gdk_pixbuf_get_pixels (pb); |
567 | guchar *src = gdk_pixbuf_get_pixels (pb); |
347 | int sstr = gdk_pixbuf_get_rowstride (pb); |
568 | int sstr = gdk_pixbuf_get_rowstride (pb); |
348 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
349 | int seed = 77; |
|
|
350 | |
569 | |
351 | RETVAL = newSV (w * h); |
570 | RETVAL = newSV (6 * 8 * 12 / 8); |
352 | SvPOK_only (RETVAL); |
571 | SvPOK_only (RETVAL); |
353 | SvCUR_set (RETVAL, w * h); |
572 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
354 | |
573 | |
355 | dst = SvPVX (RETVAL); |
574 | dst = (guchar *)SvPVX (RETVAL); |
356 | |
|
|
357 | memset (Er, 0, sizeof (int) * IW); |
|
|
358 | memset (Eg, 0, sizeof (int) * IW); |
|
|
359 | memset (Eb, 0, sizeof (int) * IW); |
|
|
360 | |
575 | |
361 | /* some primitive error distribution + random dithering */ |
576 | /* some primitive error distribution + random dithering */ |
362 | |
577 | |
363 | for (y = 0; y < h; y++) |
578 | for (y = 0; y < h; y++) |
364 | { |
579 | { |
365 | int er = 0, eg = 0, eb = 0; |
580 | guchar *p = src + y * sstr; |
366 | |
581 | |
367 | for (x = 0; x < w; x++) |
582 | for (x = 0; x < w; x += 2) |
368 | { |
583 | { |
369 | int r, g, b; |
584 | unsigned int r, g, b, h, s, v, H, V1, V2; |
370 | guchar *p = src + x * bpp + y * sstr; |
|
|
371 | |
585 | |
372 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
586 | if (bpp == 3) |
373 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
587 | r = *p++, g = *p++, b = *p++; |
374 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
588 | else if (bpp == 1) |
|
|
589 | r = g = b = *p++; |
|
|
590 | else |
|
|
591 | abort (); |
375 | |
592 | |
376 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
593 | rgb_to_hsv (r, g, b, &h, &s, &v); |
377 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
378 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
379 | |
594 | |
380 | er += p[0] - (r * 255 + 4) / 7; |
595 | H = (h * 15 / 255) << 4; |
381 | eg += p[1] - (g * 255 + 4) / 7; |
596 | V1 = v; |
382 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
383 | |
597 | |
384 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
598 | if (bpp == 3) |
385 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
599 | r = *p++, g = *p++, b = *p++; |
386 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
600 | else if (bpp == 1) |
|
|
601 | r = g = b = *p++; |
|
|
602 | else |
|
|
603 | abort (); |
387 | |
604 | |
388 | *dst++ = r << 5 | g << 2 | b; |
605 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
606 | |
|
|
607 | H |= h * 15 / 255; |
|
|
608 | V2 = v; |
|
|
609 | |
|
|
610 | *dst++ = H; |
|
|
611 | *dst++ = V1; |
|
|
612 | *dst++ = V2; |
389 | } |
613 | } |
390 | } |
614 | } |
391 | } |
615 | } |
392 | OUTPUT: |
616 | OUTPUT: |
393 | RETVAL |
617 | RETVAL |
394 | |
618 | |
395 | SV * |
619 | SV * |
|
|
620 | hv84_to_av (unsigned char *hv84) |
|
|
621 | CODE: |
|
|
622 | { |
|
|
623 | int i = 72 / 3; |
|
|
624 | AV *av = newAV (); |
|
|
625 | |
|
|
626 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
627 | while (i--) |
|
|
628 | { |
|
|
629 | int h = *hv84++; |
|
|
630 | int v1 = *hv84++; |
|
|
631 | int v2 = *hv84++; |
|
|
632 | |
|
|
633 | av_push (av, newSViv (v1)); |
|
|
634 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
635 | av_push (av, newSViv (v2)); |
|
|
636 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
637 | } |
|
|
638 | } |
|
|
639 | OUTPUT: |
|
|
640 | RETVAL |
|
|
641 | |
|
|
642 | ############################################################################# |
|
|
643 | |
|
|
644 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
645 | |
|
|
646 | SV * |
|
|
647 | extract_features (SV *ar) |
|
|
648 | CODE: |
|
|
649 | { |
|
|
650 | int i; |
|
|
651 | AV *av, *result; |
|
|
652 | |
|
|
653 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
654 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
655 | |
|
|
656 | av = (AV *) SvRV (ar); |
|
|
657 | result = newAV (); |
|
|
658 | |
|
|
659 | for (i = 0; i <= av_len (av); ++i) |
|
|
660 | { |
|
|
661 | SV *sv = *av_fetch (av, i, 1); |
|
|
662 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
663 | |
|
|
664 | SvPOK_on (histsv); |
|
|
665 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
666 | float *hist = (float *)SvPVX (histsv); |
|
|
667 | |
|
|
668 | struct feature f_h, f_s, f_v; |
|
|
669 | feature_init (&f_h); |
|
|
670 | feature_init (&f_s); |
|
|
671 | feature_init (&f_v); |
|
|
672 | |
|
|
673 | { |
|
|
674 | STRLEN len; |
|
|
675 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
676 | while (len >= 3) |
|
|
677 | { |
|
|
678 | unsigned int r, g, b, h, s, v; |
|
|
679 | r = *buf++; g = *buf++; b = *buf++; |
|
|
680 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
681 | |
|
|
682 | feature_update_pass_1 (&f_h, h); |
|
|
683 | feature_update_pass_1 (&f_s, s); |
|
|
684 | feature_update_pass_1 (&f_v, v); |
|
|
685 | |
|
|
686 | len -= 3; |
|
|
687 | } |
|
|
688 | |
|
|
689 | feature_finish_pass_1 (&f_h); |
|
|
690 | feature_finish_pass_1 (&f_s); |
|
|
691 | feature_finish_pass_1 (&f_v); |
|
|
692 | } |
|
|
693 | |
|
|
694 | { |
|
|
695 | STRLEN len; |
|
|
696 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
697 | while (len >= 3) |
|
|
698 | { |
|
|
699 | unsigned int r, g, b, h, s, v; |
|
|
700 | r = *buf++; g = *buf++; b = *buf++; |
|
|
701 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
702 | |
|
|
703 | feature_update_pass_2 (&f_h, h); |
|
|
704 | feature_update_pass_2 (&f_s, s); |
|
|
705 | feature_update_pass_2 (&f_v, v); |
|
|
706 | |
|
|
707 | len -= 3; |
|
|
708 | } |
|
|
709 | |
|
|
710 | feature_finish_pass_2 (&f_h); |
|
|
711 | feature_finish_pass_2 (&f_s); |
|
|
712 | feature_finish_pass_2 (&f_v); |
|
|
713 | } |
|
|
714 | |
|
|
715 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
716 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
717 | hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ; |
|
|
718 | |
|
|
719 | av_push (result, histsv); |
|
|
720 | } |
|
|
721 | |
|
|
722 | RETVAL = newRV_noinc ((SV *)result); |
|
|
723 | } |
|
|
724 | OUTPUT: |
|
|
725 | RETVAL |
|
|
726 | |
|
|
727 | SV * |
396 | make_histogram (SV *ar) |
728 | make_histograms (SV *ar) |
397 | CODE: |
729 | CODE: |
398 | { |
730 | { |
399 | int i; |
731 | int i; |
400 | AV *av, *result; |
732 | AV *av, *result; |
401 | |
733 | |
… | |
… | |
444 | RETVAL = newRV_noinc ((SV *)result); |
776 | RETVAL = newRV_noinc ((SV *)result); |
445 | } |
777 | } |
446 | OUTPUT: |
778 | OUTPUT: |
447 | RETVAL |
779 | RETVAL |
448 | |
780 | |
449 | ############################################################################# |
|
|
450 | |
781 | |
451 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
452 | |
|
|
453 | void |
|
|
454 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
455 | CODE: |
|
|
456 | { |
|
|
457 | int w = gdk_pixbuf_get_width (pb); |
|
|
458 | int h = gdk_pixbuf_get_height (pb); |
|
|
459 | int x, y, i; |
|
|
460 | guchar *dst; |
|
|
461 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
462 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
463 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
464 | |
|
|
465 | a85_init (); |
|
|
466 | |
|
|
467 | for (y = 0; y < h; y++) |
|
|
468 | for (x = 0; x < w; x++) |
|
|
469 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
470 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
471 | |
|
|
472 | a85_finish (fp); |
|
|
473 | } |
|
|
474 | |
|
|
475 | void |
|
|
476 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
477 | CODE: |
|
|
478 | { |
|
|
479 | int w = gdk_pixbuf_get_width (pb); |
|
|
480 | int h = gdk_pixbuf_get_height (pb); |
|
|
481 | int x, y, i; |
|
|
482 | guchar *dst; |
|
|
483 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
484 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
485 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
486 | |
|
|
487 | for (y = 0; y < h; y++) |
|
|
488 | for (x = 0; x < w; x++) |
|
|
489 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
490 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
491 | } |
|
|
492 | |
|
|
493 | ############################################################################# |
|
|
494 | |
|
|
495 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
496 | |
|
|
497 | SV * |
|
|
498 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
499 | CODE: |
|
|
500 | { |
|
|
501 | int w = gdk_pixbuf_get_width (pb); |
|
|
502 | int h = gdk_pixbuf_get_height (pb); |
|
|
503 | int x, y; |
|
|
504 | guchar *dst; |
|
|
505 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
506 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
507 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
508 | |
|
|
509 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
510 | SvPOK_only (RETVAL); |
|
|
511 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
512 | |
|
|
513 | dst = SvPVX (RETVAL); |
|
|
514 | |
|
|
515 | /* some primitive error distribution + random dithering */ |
|
|
516 | |
|
|
517 | for (y = 0; y < h; y++) |
|
|
518 | { |
|
|
519 | guchar *p = src + y * sstr; |
|
|
520 | |
|
|
521 | for (x = 0; x < w; x += 2) |
|
|
522 | { |
|
|
523 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
524 | |
|
|
525 | if (bpp == 3) |
|
|
526 | r = *p++, g = *p++, b = *p++; |
|
|
527 | else if (bpp == 1) |
|
|
528 | r = g = b = *p++; |
|
|
529 | else |
|
|
530 | abort (); |
|
|
531 | |
|
|
532 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
533 | |
|
|
534 | H = (h * 15 / 255) << 4; |
|
|
535 | V1 = v; |
|
|
536 | |
|
|
537 | if (bpp == 3) |
|
|
538 | r = *p++, g = *p++, b = *p++; |
|
|
539 | else if (bpp == 1) |
|
|
540 | r = g = b = *p++; |
|
|
541 | else |
|
|
542 | abort (); |
|
|
543 | |
|
|
544 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
545 | |
|
|
546 | H |= h * 15 / 255; |
|
|
547 | V2 = v; |
|
|
548 | |
|
|
549 | *dst++ = H; |
|
|
550 | *dst++ = V1; |
|
|
551 | *dst++ = V2; |
|
|
552 | } |
|
|
553 | } |
|
|
554 | } |
|
|
555 | OUTPUT: |
|
|
556 | RETVAL |
|
|
557 | |
|
|
558 | SV * |
|
|
559 | hv84_to_av (unsigned char *hv84) |
|
|
560 | CODE: |
|
|
561 | { |
|
|
562 | int i = 72 / 3; |
|
|
563 | AV *av = newAV (); |
|
|
564 | |
|
|
565 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
566 | while (i--) |
|
|
567 | { |
|
|
568 | int h = *hv84++; |
|
|
569 | int v1 = *hv84++; |
|
|
570 | int v2 = *hv84++; |
|
|
571 | |
|
|
572 | av_push (av, newSViv (v1)); |
|
|
573 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
574 | av_push (av, newSViv (v2)); |
|
|
575 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
576 | } |
|
|
577 | } |
|
|
578 | OUTPUT: |
|
|
579 | RETVAL |
|
|
580 | |
|
|
581 | |
|
|
582 | |
|
|