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 | |
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21 | #include "perlmulticore.h" |
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22 | |
13 | #define IW 80 /* MUST match Schnauer.pm! */ |
23 | #define IW 80 /* MUST match Schnauzer.pm! */ |
14 | #define IH 60 /* MUST match Schnauer.pm! */ |
24 | #define IH 60 /* MUST match Schnauzer.pm! */ |
15 | |
25 | |
16 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
26 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
17 | |
27 | |
18 | #define LINELENGTH 240 |
28 | #define LINELENGTH 240 |
19 | |
29 | |
20 | #define ELLIPSIS "\xe2\x80\xa6" |
30 | #define ELLIPSIS "\xe2\x80\xa6" |
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31 | |
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32 | typedef char *octet_string; |
21 | |
33 | |
22 | struct jpg_err_mgr |
34 | struct jpg_err_mgr |
23 | { |
35 | { |
24 | struct jpeg_error_mgr err; |
36 | struct jpeg_error_mgr err; |
25 | jmp_buf setjmp_buffer; |
37 | jmp_buf setjmp_buffer; |
26 | }; |
38 | }; |
27 | |
39 | |
28 | static void |
40 | static void |
29 | cv_error_exit (j_common_ptr cinfo) |
41 | cv_error_exit (j_common_ptr cinfo) |
30 | { |
42 | { |
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43 | cinfo->err->output_message (cinfo); |
31 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
44 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
32 | } |
45 | } |
33 | |
46 | |
34 | static void |
47 | static void |
35 | cv_error_output (j_common_ptr cinfo) |
48 | cv_error_output (j_common_ptr cinfo) |
36 | { |
49 | { |
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50 | char msg[JMSG_LENGTH_MAX]; |
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51 | |
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52 | cinfo->err->format_message (cinfo, msg); |
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53 | |
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54 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
37 | return; |
55 | return; |
38 | } |
56 | } |
39 | |
57 | |
40 | static void |
58 | static void |
41 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
59 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
… | |
… | |
62 | |
80 | |
63 | *h &= 255; |
81 | *h &= 255; |
64 | } |
82 | } |
65 | } |
83 | } |
66 | |
84 | |
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85 | struct feature { |
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86 | float v1, v2, v3; // mean, square, cube |
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87 | int n; |
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88 | }; |
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89 | |
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90 | static void |
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91 | feature_init (struct feature *f) |
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92 | { |
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93 | f->v1 = 0.; |
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94 | f->v2 = 0.; |
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95 | f->v3 = 0.; |
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96 | f->n = 0; |
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97 | } |
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98 | |
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99 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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100 | // elmex ist schuld. |
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101 | static void |
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102 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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103 | { |
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104 | f->v1 += v; |
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105 | f->n += 1; |
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106 | } |
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107 | |
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108 | static void |
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109 | feature_finish_pass_1 (struct feature *f) |
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110 | { |
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111 | if (f->n < 1) |
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112 | return; |
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113 | |
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114 | f->v1 /= f->n; |
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115 | } |
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116 | |
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117 | static void |
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118 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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119 | { |
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120 | float d = v - f->v1; |
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121 | |
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122 | f->v2 += d * d; |
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123 | f->v3 += d * d * d; |
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124 | } |
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125 | |
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126 | static void |
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127 | feature_finish_pass_2 (struct feature *f) |
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128 | { |
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129 | if (f->n < 1) |
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130 | return; |
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131 | |
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132 | f->v2 /= f->n; |
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133 | f->v3 /= f->n; |
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134 | |
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135 | f->v1 /= 255.; |
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136 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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137 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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138 | } |
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139 | |
67 | static guint32 a85_val; |
140 | static guint32 a85_val; |
68 | static guint a85_cnt; |
141 | static guint a85_cnt; |
69 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
142 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
70 | |
143 | |
71 | static void |
144 | static void |
… | |
… | |
123 | |
196 | |
124 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
197 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
125 | |
198 | |
126 | PROTOTYPES: ENABLE |
199 | PROTOTYPES: ENABLE |
127 | |
200 | |
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201 | # missing function in perl. really :) |
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202 | int |
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203 | common_prefix_length (a, b) |
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204 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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205 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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206 | CODE: |
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207 | RETVAL = 0; |
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208 | |
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209 | while (*a == *b && *a) |
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210 | { |
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211 | RETVAL += (*a & 0xc0) != 0x80; |
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212 | a++, b++; |
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213 | } |
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214 | |
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215 | OUTPUT: |
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216 | RETVAL |
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217 | |
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218 | const char * |
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219 | magic (octet_string path) |
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220 | CODE: |
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221 | { |
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222 | static magic_t cookie; |
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223 | |
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224 | if (!cookie) |
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225 | { |
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226 | cookie = magic_open (MAGIC_SYMLINK); |
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227 | |
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228 | if (cookie) |
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229 | magic_load (cookie, 0); |
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230 | else |
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231 | XSRETURN_UNDEF; |
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232 | } |
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233 | |
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234 | RETVAL = magic_file (cookie, path); |
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235 | } |
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236 | OUTPUT: |
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237 | RETVAL |
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238 | |
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239 | const char * |
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240 | magic_mime (octet_string path) |
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241 | CODE: |
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242 | { |
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243 | static magic_t cookie; |
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244 | |
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245 | if (!cookie) |
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246 | { |
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247 | cookie = magic_open (MAGIC_MIME | MAGIC_SYMLINK); |
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248 | |
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249 | if (cookie) |
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250 | magic_load (cookie, 0); |
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251 | else |
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252 | XSRETURN_UNDEF; |
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253 | } |
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254 | |
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255 | perlinterp_release (); |
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256 | RETVAL = magic_file (cookie, path); |
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257 | perlinterp_acquire (); |
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258 | } |
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259 | OUTPUT: |
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260 | RETVAL |
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261 | |
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262 | # missing/broken in Gtk2 perl module |
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263 | |
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264 | void |
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265 | gdk_window_clear_hints (GdkWindow *window) |
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266 | CODE: |
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267 | gdk_window_set_geometry_hints (window, 0, 0); |
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268 | |
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269 | gboolean |
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270 | gdk_net_wm_supports (GdkAtom property) |
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271 | CODE: |
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272 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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273 | RETVAL = gdk_net_wm_supports (property); |
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274 | #else |
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275 | RETVAL = 0; |
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276 | #endif |
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277 | OUTPUT: |
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278 | RETVAL |
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279 | |
128 | GdkPixbuf_noinc * |
280 | GdkPixbuf_noinc * |
129 | transpose (GdkPixbuf *pb) |
281 | dealpha_expose (GdkPixbuf *pb) |
130 | CODE: |
282 | CODE: |
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283 | perlinterp_release (); |
131 | { |
284 | { |
132 | int w = gdk_pixbuf_get_width (pb); |
285 | int w = gdk_pixbuf_get_width (pb); |
133 | int h = gdk_pixbuf_get_height (pb); |
286 | int h = gdk_pixbuf_get_height (pb); |
134 | int bpp = gdk_pixbuf_get_n_channels (pb); |
287 | int bpp = gdk_pixbuf_get_n_channels (pb); |
135 | int x, y, i; |
288 | int x, y, i; |
136 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
289 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
137 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
290 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
138 | |
291 | |
139 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
292 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
140 | |
293 | |
141 | dst = gdk_pixbuf_get_pixels (RETVAL); |
294 | dst = gdk_pixbuf_get_pixels (RETVAL); |
142 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
295 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
143 | |
296 | |
144 | for (y = 0; y < h; y++) |
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145 | for (x = 0; x < w; x++) |
297 | for (x = 0; x < w; x++) |
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298 | for (y = 0; y < h; y++) |
146 | for (i = 0; i < bpp; i++) |
299 | for (i = 0; i < 3; i++) |
147 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
300 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
148 | } |
301 | } |
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302 | perlinterp_acquire (); |
149 | OUTPUT: |
303 | OUTPUT: |
150 | RETVAL |
304 | RETVAL |
151 | |
305 | |
152 | GdkPixbuf_noinc * |
306 | GdkPixbuf_noinc * |
153 | flop (GdkPixbuf *pb) |
307 | rotate (GdkPixbuf *pb, int angle) |
154 | CODE: |
308 | CODE: |
155 | { |
309 | perlinterp_release (); |
156 | int w = gdk_pixbuf_get_width (pb); |
310 | if (angle < 0) |
157 | int h = gdk_pixbuf_get_height (pb); |
311 | angle += 360; |
158 | int bpp = gdk_pixbuf_get_n_channels (pb); |
312 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
159 | int x, y, i; |
313 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
160 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
314 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
161 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
315 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
162 | |
316 | : angle); |
163 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
317 | perlinterp_acquire (); |
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: |
318 | OUTPUT: |
174 | RETVAL |
319 | RETVAL |
175 | |
320 | |
176 | GdkPixbuf_noinc * |
321 | GdkPixbuf_noinc * |
177 | load_jpeg (char *path, int thumbnail=0) |
322 | load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) |
178 | CODE: |
323 | CODE: |
179 | { |
324 | { |
180 | struct jpeg_decompress_struct cinfo; |
325 | struct jpeg_decompress_struct cinfo; |
181 | struct jpg_err_mgr jerr; |
326 | struct jpg_err_mgr jerr; |
182 | guchar *data; |
327 | guchar *data; |
183 | int rs; |
328 | int rs; |
184 | FILE *fp; |
329 | FILE *fp; |
185 | volatile GdkPixbuf *pb = 0; |
330 | volatile GdkPixbuf *pb = 0; |
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331 | |
186 | RETVAL = 0; |
332 | RETVAL = 0; |
187 | |
333 | |
188 | if (!(fp = fopen (path, "rb"))) |
334 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
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335 | |
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336 | if (!fp) |
189 | XSRETURN_UNDEF; |
337 | XSRETURN_UNDEF; |
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338 | |
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339 | perlinterp_release (); |
190 | |
340 | |
191 | cinfo.err = jpeg_std_error (&jerr.err); |
341 | cinfo.err = jpeg_std_error (&jerr.err); |
192 | |
342 | |
193 | jerr.err.error_exit = cv_error_exit; |
343 | jerr.err.error_exit = cv_error_exit; |
194 | jerr.err.output_message = cv_error_output; |
344 | jerr.err.output_message = cv_error_output; |
… | |
… | |
199 | jpeg_destroy_decompress (&cinfo); |
349 | jpeg_destroy_decompress (&cinfo); |
200 | |
350 | |
201 | if (pb) |
351 | if (pb) |
202 | g_object_unref ((gpointer)pb); |
352 | g_object_unref ((gpointer)pb); |
203 | |
353 | |
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354 | perlinterp_acquire (); |
204 | XSRETURN_UNDEF; |
355 | XSRETURN_UNDEF; |
205 | } |
356 | } |
206 | |
357 | |
207 | jpeg_create_decompress (&cinfo); |
358 | jpeg_create_decompress (&cinfo); |
208 | |
359 | |
… | |
… | |
224 | { |
375 | { |
225 | cinfo.dct_method = JDCT_FASTEST; |
376 | cinfo.dct_method = JDCT_FASTEST; |
226 | cinfo.do_fancy_upsampling = FALSE; |
377 | cinfo.do_fancy_upsampling = FALSE; |
227 | |
378 | |
228 | while (cinfo.scale_denom < 8 |
379 | while (cinfo.scale_denom < 8 |
229 | && (cinfo.output_width >> 1) >= IW |
380 | && cinfo.output_width >= iw*4 |
230 | && (cinfo.output_height >> 1) >= IH) |
381 | && cinfo.output_height >= ih*4) |
231 | { |
382 | { |
232 | cinfo.scale_denom <<= 1; |
383 | cinfo.scale_denom <<= 1; |
233 | jpeg_calc_output_dimensions (&cinfo); |
384 | jpeg_calc_output_dimensions (&cinfo); |
234 | } |
385 | } |
235 | } |
386 | } |
236 | |
387 | |
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388 | if (cinfo.output_components != 3) |
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389 | longjmp (jerr.setjmp_buffer, 3); |
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390 | |
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391 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
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392 | { |
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393 | cinfo.out_color_space = JCS_CMYK; |
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394 | cinfo.output_components = 4; |
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395 | } |
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396 | |
237 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
397 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
238 | if (!RETVAL) |
398 | if (!RETVAL) |
239 | longjmp (jerr.setjmp_buffer, 2); |
399 | longjmp (jerr.setjmp_buffer, 2); |
240 | |
400 | |
241 | data = gdk_pixbuf_get_pixels (RETVAL); |
401 | data = gdk_pixbuf_get_pixels (RETVAL); |
242 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
402 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
243 | |
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244 | if (cinfo.output_components != 3) |
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245 | longjmp (jerr.setjmp_buffer, 3); |
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246 | |
403 | |
247 | jpeg_start_decompress (&cinfo); |
404 | jpeg_start_decompress (&cinfo); |
248 | |
405 | |
249 | while (cinfo.output_scanline < cinfo.output_height) |
406 | while (cinfo.output_scanline < cinfo.output_height) |
250 | { |
407 | { |
… | |
… | |
257 | rp [3] = (guchar *)rp [2] + rs; |
414 | rp [3] = (guchar *)rp [2] + rs; |
258 | |
415 | |
259 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
416 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
260 | } |
417 | } |
261 | |
418 | |
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419 | if (cinfo.out_color_space == JCS_CMYK) |
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420 | { |
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421 | guchar *end = data + cinfo.output_height * rs; |
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422 | |
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423 | while (data < end) |
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424 | { |
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425 | U32 c = data [0]; |
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426 | U32 m = data [1]; |
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427 | U32 y = data [2]; |
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428 | U32 k = data [3]; |
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429 | |
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430 | data [0] = c * k / 255; |
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431 | data [1] = m * k / 255; |
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432 | data [2] = y * k / 255; |
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433 | data [3] = 255; |
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434 | |
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435 | data += 4; |
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436 | } |
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437 | } |
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438 | |
262 | jpeg_finish_decompress (&cinfo); |
439 | jpeg_finish_decompress (&cinfo); |
263 | fclose (fp); |
440 | fclose (fp); |
264 | jpeg_destroy_decompress (&cinfo); |
441 | jpeg_destroy_decompress (&cinfo); |
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442 | perlinterp_acquire (); |
265 | } |
443 | } |
266 | OUTPUT: |
444 | OUTPUT: |
267 | RETVAL |
445 | RETVAL |
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446 | |
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447 | void |
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448 | compare (GdkPixbuf *a, GdkPixbuf *b) |
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449 | PPCODE: |
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450 | perlinterp_release (); |
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451 | { |
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452 | int w = gdk_pixbuf_get_width (a); |
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453 | int h = gdk_pixbuf_get_height (a); |
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454 | |
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455 | int sa = gdk_pixbuf_get_rowstride (a); |
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456 | int sb = gdk_pixbuf_get_rowstride (b); |
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457 | |
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458 | guchar *pa = gdk_pixbuf_get_pixels (a); |
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459 | guchar *pb = gdk_pixbuf_get_pixels (b); |
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460 | |
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461 | int x, y; |
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462 | |
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463 | assert (w == gdk_pixbuf_get_width (b)); |
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464 | assert (h == gdk_pixbuf_get_height (b)); |
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465 | |
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466 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
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467 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
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468 | |
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469 | double diff = 0.; |
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470 | int peak = 0; |
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471 | |
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472 | if (w && h) |
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473 | for (y = 0; y < h; y++) |
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474 | { |
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475 | guchar *pa_ = pa + y * sa; |
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476 | guchar *pb_ = pb + y * sb; |
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477 | |
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478 | for (x = 0; x < w; x++) |
|
|
479 | { |
|
|
480 | int d; |
|
|
481 | |
|
|
482 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
483 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
484 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
485 | } |
|
|
486 | } |
|
|
487 | |
|
|
488 | perlinterp_acquire (); |
|
|
489 | |
|
|
490 | EXTEND (SP, 2); |
|
|
491 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
492 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
493 | } |
268 | |
494 | |
269 | ############################################################################# |
495 | ############################################################################# |
270 | |
496 | |
271 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
497 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
272 | |
498 | |
|
|
499 | # currently only works for filenames (octet strings) |
|
|
500 | |
|
|
501 | SV * |
|
|
502 | foldcase (SV *pathsv) |
|
|
503 | PROTOTYPE: $ |
|
|
504 | CODE: |
|
|
505 | { |
|
|
506 | STRLEN plen; |
|
|
507 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
508 | U8 *pend = path + plen; |
|
|
509 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
510 | |
|
|
511 | while (path < pend) |
|
|
512 | { |
|
|
513 | U8 ch = *path; |
|
|
514 | |
|
|
515 | if (ch >= 'a' && ch <= 'z') |
|
|
516 | *dstp++ = *path++; |
|
|
517 | else if (ch >= 'A' && ch <= 'Z') |
|
|
518 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
519 | else if (ch >= '0' && ch <= '9') |
|
|
520 | { |
|
|
521 | STRLEN el, nl = 0; |
|
|
522 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
523 | path++, nl++; |
|
|
524 | |
|
|
525 | for (el = nl; el < 6; el++) |
|
|
526 | *dstp++ = '0'; |
|
|
527 | |
|
|
528 | memcpy (dstp, path - nl, nl); |
|
|
529 | dstp += nl; |
|
|
530 | } |
|
|
531 | else |
|
|
532 | *dstp++ = *path++; |
|
|
533 | #if 0 |
|
|
534 | else |
|
|
535 | { |
|
|
536 | STRLEN cl; |
|
|
537 | to_utf8_fold (path, dstp, &cl); |
|
|
538 | dstp += cl; |
|
|
539 | path += is_utf8_char (path); |
|
|
540 | } |
|
|
541 | #endif |
|
|
542 | } |
|
|
543 | |
|
|
544 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
545 | } |
|
|
546 | OUTPUT: |
|
|
547 | RETVAL |
|
|
548 | |
273 | GdkPixbuf_noinc * |
549 | GdkPixbuf_noinc * |
274 | p7_to_pb (int w, int h, guchar *src) |
550 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
551 | PROTOTYPE: @ |
275 | CODE: |
552 | CODE: |
276 | { |
553 | { |
277 | int x, y; |
554 | int x, y; |
278 | guchar *dst, *d; |
555 | guchar *dst, *d; |
279 | int dstr; |
556 | int dstr; |
|
|
557 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
280 | |
558 | |
281 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
559 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
282 | dst = gdk_pixbuf_get_pixels (RETVAL); |
560 | dst = gdk_pixbuf_get_pixels (RETVAL); |
283 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
561 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
284 | |
562 | |
… | |
… | |
293 | } |
571 | } |
294 | } |
572 | } |
295 | OUTPUT: |
573 | OUTPUT: |
296 | RETVAL |
574 | RETVAL |
297 | |
575 | |
|
|
576 | ############################################################################# |
|
|
577 | |
|
|
578 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
579 | |
|
|
580 | void |
|
|
581 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
582 | CODE: |
|
|
583 | { |
|
|
584 | int w = gdk_pixbuf_get_width (pb); |
|
|
585 | int h = gdk_pixbuf_get_height (pb); |
|
|
586 | int x, y, i; |
|
|
587 | guchar *dst; |
|
|
588 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
589 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
590 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
591 | |
|
|
592 | a85_init (); |
|
|
593 | |
|
|
594 | for (y = 0; y < h; y++) |
|
|
595 | for (x = 0; x < w; x++) |
|
|
596 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
597 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
598 | |
|
|
599 | a85_finish (fp); |
|
|
600 | } |
|
|
601 | |
|
|
602 | void |
|
|
603 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
604 | CODE: |
|
|
605 | { |
|
|
606 | int w = gdk_pixbuf_get_width (pb); |
|
|
607 | int h = gdk_pixbuf_get_height (pb); |
|
|
608 | int x, y, i; |
|
|
609 | guchar *dst; |
|
|
610 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
611 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
612 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
613 | |
|
|
614 | for (y = 0; y < h; y++) |
|
|
615 | for (x = 0; x < w; x++) |
|
|
616 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
617 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
618 | } |
|
|
619 | |
|
|
620 | ############################################################################# |
|
|
621 | |
|
|
622 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
623 | |
298 | SV * |
624 | SV * |
299 | pb_to_p7 (GdkPixbuf *pb) |
625 | pb_to_hv84 (GdkPixbuf *pb) |
300 | CODE: |
626 | CODE: |
301 | { |
627 | { |
302 | int w = gdk_pixbuf_get_width (pb); |
628 | int w = gdk_pixbuf_get_width (pb); |
303 | int h = gdk_pixbuf_get_height (pb); |
629 | int h = gdk_pixbuf_get_height (pb); |
304 | int x, y; |
630 | int x, y; |
305 | guchar *dst; |
631 | guchar *dst; |
306 | int bpp = gdk_pixbuf_get_n_channels (pb); |
632 | int bpp = gdk_pixbuf_get_n_channels (pb); |
307 | guchar *src = gdk_pixbuf_get_pixels (pb); |
633 | guchar *src = gdk_pixbuf_get_pixels (pb); |
308 | int sstr = gdk_pixbuf_get_rowstride (pb); |
634 | 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 | |
635 | |
470 | RETVAL = newSV (6 * 8 * 12 / 8); |
636 | RETVAL = newSV (6 * 8 * 12 / 8); |
471 | SvPOK_only (RETVAL); |
637 | SvPOK_only (RETVAL); |
472 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
638 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
473 | |
639 | |
474 | dst = SvPVX (RETVAL); |
640 | dst = (guchar *)SvPVX (RETVAL); |
475 | |
641 | |
476 | /* some primitive error distribution + random dithering */ |
642 | /* some primitive error distribution + random dithering */ |
477 | |
643 | |
478 | for (y = 0; y < h; y++) |
644 | for (y = 0; y < h; y++) |
479 | { |
645 | { |
… | |
… | |
537 | } |
703 | } |
538 | } |
704 | } |
539 | OUTPUT: |
705 | OUTPUT: |
540 | RETVAL |
706 | RETVAL |
541 | |
707 | |
|
|
708 | ############################################################################# |
542 | |
709 | |
|
|
710 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
543 | |
711 | |
|
|
712 | SV * |
|
|
713 | extract_features (SV *ar) |
|
|
714 | CODE: |
|
|
715 | { |
|
|
716 | int i; |
|
|
717 | AV *av, *result; |
|
|
718 | |
|
|
719 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
720 | croak ("Not an array ref as first argument to extract_features"); |
|
|
721 | |
|
|
722 | av = (AV *) SvRV (ar); |
|
|
723 | result = newAV (); |
|
|
724 | |
|
|
725 | for (i = 0; i <= av_len (av); ++i) |
|
|
726 | { |
|
|
727 | SV *sv = *av_fetch (av, i, 1); |
|
|
728 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
729 | |
|
|
730 | SvPOK_on (histsv); |
|
|
731 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
732 | float *hist = (float *)SvPVX (histsv); |
|
|
733 | |
|
|
734 | struct feature f_h, f_s, f_v; |
|
|
735 | feature_init (&f_h); |
|
|
736 | feature_init (&f_s); |
|
|
737 | feature_init (&f_v); |
|
|
738 | |
|
|
739 | { |
|
|
740 | STRLEN len; |
|
|
741 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
742 | while (len >= 3) |
|
|
743 | { |
|
|
744 | unsigned int r, g, b, h, s, v; |
|
|
745 | r = *buf++; g = *buf++; b = *buf++; |
|
|
746 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
747 | |
|
|
748 | feature_update_pass_1 (&f_h, h); |
|
|
749 | feature_update_pass_1 (&f_s, s); |
|
|
750 | feature_update_pass_1 (&f_v, v); |
|
|
751 | |
|
|
752 | len -= 3; |
|
|
753 | } |
|
|
754 | |
|
|
755 | feature_finish_pass_1 (&f_h); |
|
|
756 | feature_finish_pass_1 (&f_s); |
|
|
757 | feature_finish_pass_1 (&f_v); |
|
|
758 | } |
|
|
759 | |
|
|
760 | { |
|
|
761 | STRLEN len; |
|
|
762 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
763 | while (len >= 3) |
|
|
764 | { |
|
|
765 | unsigned int r, g, b, h, s, v; |
|
|
766 | r = *buf++; g = *buf++; b = *buf++; |
|
|
767 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
768 | |
|
|
769 | feature_update_pass_2 (&f_h, h); |
|
|
770 | feature_update_pass_2 (&f_s, s); |
|
|
771 | feature_update_pass_2 (&f_v, v); |
|
|
772 | |
|
|
773 | len -= 3; |
|
|
774 | } |
|
|
775 | |
|
|
776 | feature_finish_pass_2 (&f_h); |
|
|
777 | feature_finish_pass_2 (&f_s); |
|
|
778 | feature_finish_pass_2 (&f_v); |
|
|
779 | } |
|
|
780 | |
|
|
781 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
782 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
783 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
784 | |
|
|
785 | av_push (result, histsv); |
|
|
786 | } |
|
|
787 | |
|
|
788 | RETVAL = newRV_noinc ((SV *)result); |
|
|
789 | } |
|
|
790 | OUTPUT: |
|
|
791 | RETVAL |
|
|
792 | |