| 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> |
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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> |
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10 | |
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11 | #include <jpeglib.h> |
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12 | #include <glib.h> |
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13 | #include <gtk/gtk.h> |
| 5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
14 | #include <gdk-pixbuf/gdk-pixbuf.h> |
| 6 | |
15 | |
| 7 | #include <gperl.h> |
16 | #include <gperl.h> |
| 8 | #include <gtk2perl.h> |
17 | #include <gtk2perl.h> |
| 9 | |
18 | |
| 10 | #define IW 80 |
19 | #define IW 80 /* MUST match Schnauzer.pm! */ |
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20 | #define IH 60 /* MUST match Schnauzer.pm! */ |
| 11 | |
21 | |
| 12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
22 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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23 | |
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24 | #define LINELENGTH 240 |
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25 | |
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26 | #define ELLIPSIS "\xe2\x80\xa6" |
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27 | |
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28 | typedef char *octet_string; |
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29 | |
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30 | struct jpg_err_mgr |
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31 | { |
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32 | struct jpeg_error_mgr err; |
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33 | jmp_buf setjmp_buffer; |
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34 | }; |
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35 | |
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36 | static void |
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37 | cv_error_exit (j_common_ptr cinfo) |
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38 | { |
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39 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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40 | } |
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41 | |
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42 | static void |
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43 | cv_error_output (j_common_ptr cinfo) |
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44 | { |
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45 | return; |
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46 | } |
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47 | |
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48 | static void |
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49 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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50 | unsigned int *h, unsigned int *s, unsigned int *v) |
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51 | { |
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52 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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53 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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54 | unsigned int delta = mx - mn; |
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55 | |
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56 | *v = mx; |
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57 | |
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58 | *s = mx ? delta * 255 / mx : 0; |
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59 | |
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60 | if (delta == 0) |
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61 | *h = 0; |
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62 | else |
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63 | { |
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64 | if (r == mx) |
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65 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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66 | else if (g == mx) |
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67 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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68 | else if (b == mx) |
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69 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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70 | |
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71 | *h &= 255; |
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72 | } |
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73 | } |
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74 | |
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75 | struct feature { |
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76 | float v1, v2, v3; // mean, square, cube |
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77 | int n; |
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78 | }; |
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79 | |
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80 | static void |
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81 | feature_init (struct feature *f) |
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82 | { |
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83 | f->v1 = 0.; |
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84 | f->v2 = 0.; |
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85 | f->v3 = 0.; |
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86 | f->n = 0; |
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87 | } |
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88 | |
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89 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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90 | // elmex ist schuld. |
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91 | static void |
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92 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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93 | { |
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94 | f->v1 += v; |
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95 | f->n += 1; |
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96 | } |
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97 | |
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98 | static void |
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99 | feature_finish_pass_1 (struct feature *f) |
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100 | { |
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101 | if (f->n < 1) |
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102 | return; |
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103 | |
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104 | f->v1 /= f->n; |
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105 | } |
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106 | |
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107 | static void |
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108 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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109 | { |
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110 | float d = v - f->v1; |
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111 | |
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112 | f->v2 += d * d; |
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113 | f->v3 += d * d * d; |
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114 | } |
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115 | |
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116 | static void |
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117 | feature_finish_pass_2 (struct feature *f) |
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118 | { |
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119 | if (f->n < 1) |
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120 | return; |
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121 | |
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122 | f->v2 /= f->n; |
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123 | f->v3 /= f->n; |
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124 | |
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125 | f->v1 /= 255.; |
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126 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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127 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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128 | } |
| 13 | |
129 | |
| 14 | static guint32 a85_val; |
130 | static guint32 a85_val; |
| 15 | static guint a85_cnt; |
131 | static guint a85_cnt; |
| 16 | static guchar a85_buf[80], *a85_ptr; |
132 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
| 17 | |
133 | |
| 18 | static void |
134 | static void |
| 19 | a85_init (void) |
135 | a85_init (void) |
| 20 | { |
136 | { |
| 21 | a85_cnt = 4; |
137 | a85_cnt = 4; |
| … | |
… | |
| 51 | } |
167 | } |
| 52 | } |
168 | } |
| 53 | |
169 | |
| 54 | } |
170 | } |
| 55 | |
171 | |
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172 | static void |
| 56 | a85_finish (PerlIO *fp) |
173 | a85_finish (PerlIO *fp) |
| 57 | { |
174 | { |
| 58 | while (a85_cnt != 4) |
175 | while (a85_cnt != 4) |
| 59 | a85_push (fp, 0); |
176 | a85_push (fp, 0); |
| 60 | |
177 | |
| … | |
… | |
| 63 | *a85_ptr++ = '\n'; |
180 | *a85_ptr++ = '\n'; |
| 64 | |
181 | |
| 65 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
182 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
| 66 | } |
183 | } |
| 67 | |
184 | |
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185 | ///////////////////////////////////////////////////////////////////////////// |
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186 | |
| 68 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
187 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
| 69 | |
188 | |
| 70 | PROTOTYPES: ENABLE |
189 | PROTOTYPES: ENABLE |
| 71 | |
190 | |
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191 | # missing function in perl. really :) |
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192 | int |
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193 | common_prefix_length (a, b) |
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194 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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195 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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196 | CODE: |
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197 | RETVAL = 0; |
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198 | |
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199 | while (*a == *b && *a) |
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200 | { |
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201 | RETVAL += (*a & 0xc0) != 0x80; |
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202 | a++, b++; |
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203 | } |
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204 | |
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205 | OUTPUT: |
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206 | RETVAL |
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207 | |
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208 | const char * |
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209 | magic (octet_string path) |
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210 | CODE: |
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211 | { |
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212 | static magic_t cookie; |
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213 | |
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214 | if (!cookie) |
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215 | { |
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216 | cookie = magic_open (MAGIC_NONE); |
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217 | |
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218 | if (cookie) |
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219 | magic_load (cookie, 0); |
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220 | else |
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221 | XSRETURN_UNDEF; |
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222 | } |
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223 | |
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224 | RETVAL = magic_file (cookie, path); |
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225 | } |
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226 | OUTPUT: |
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227 | RETVAL |
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228 | |
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229 | const char * |
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230 | magic_mime (octet_string path) |
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231 | CODE: |
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232 | { |
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233 | static magic_t cookie; |
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234 | |
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235 | if (!cookie) |
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236 | { |
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237 | cookie = magic_open (MAGIC_MIME); |
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238 | |
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239 | if (cookie) |
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240 | magic_load (cookie, 0); |
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241 | else |
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242 | XSRETURN_UNDEF; |
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243 | } |
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244 | |
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245 | RETVAL = magic_file (cookie, path); |
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246 | } |
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247 | OUTPUT: |
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248 | RETVAL |
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249 | |
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250 | # missing/broken in Gtk2 perl module |
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251 | |
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252 | void |
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253 | gdk_window_clear_hints (GdkWindow *window) |
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254 | CODE: |
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255 | gdk_window_set_geometry_hints (window, 0, 0); |
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256 | |
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257 | gboolean |
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258 | gdk_net_wm_supports (GdkAtom property) |
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259 | CODE: |
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260 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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261 | RETVAL = gdk_net_wm_supports (property); |
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262 | #else |
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263 | RETVAL = 0; |
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264 | #endif |
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265 | OUTPUT: |
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266 | RETVAL |
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267 | |
| 72 | GdkPixbuf_noinc * |
268 | GdkPixbuf_noinc * |
| 73 | transpose (GdkPixbuf *pb) |
269 | dealpha_expose (GdkPixbuf *pb) |
| 74 | CODE: |
270 | CODE: |
| 75 | { |
271 | { |
| 76 | int w = gdk_pixbuf_get_width (pb); |
272 | int w = gdk_pixbuf_get_width (pb); |
| 77 | int h = gdk_pixbuf_get_height (pb); |
273 | int h = gdk_pixbuf_get_height (pb); |
| 78 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
274 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 79 | int x, y, i; |
275 | int x, y, i; |
| 80 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
276 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
| 81 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
277 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 82 | |
278 | |
| 83 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
279 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 84 | |
280 | |
| 85 | dst = gdk_pixbuf_get_pixels (RETVAL); |
281 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 86 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
282 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 87 | |
283 | |
| 88 | for (y = 0; y < h; y++) |
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| 89 | for (x = 0; x < w; x++) |
284 | for (x = 0; x < w; x++) |
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285 | for (y = 0; y < h; y++) |
| 90 | for (i = 0; i < bpp; i++) |
286 | for (i = 0; i < 3; i++) |
| 91 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
287 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
| 92 | } |
288 | } |
| 93 | OUTPUT: |
289 | OUTPUT: |
| 94 | RETVAL |
290 | RETVAL |
| 95 | |
291 | |
| 96 | GdkPixbuf_noinc * |
292 | GdkPixbuf_noinc * |
| 97 | flop (GdkPixbuf *pb) |
293 | rotate (GdkPixbuf *pb, int angle) |
| 98 | CODE: |
294 | CODE: |
| 99 | { |
295 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
| 100 | int w = gdk_pixbuf_get_width (pb); |
296 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
| 101 | int h = gdk_pixbuf_get_height (pb); |
297 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
| 102 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
298 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
| 103 | int x, y, i; |
299 | : angle); |
| 104 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
300 | OUTPUT: |
| 105 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
301 | RETVAL |
| 106 | |
302 | |
| 107 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
303 | GdkPixbuf_noinc * |
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304 | load_jpeg (SV *path, int thumbnail=0) |
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305 | CODE: |
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306 | { |
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307 | struct jpeg_decompress_struct cinfo; |
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308 | struct jpg_err_mgr jerr; |
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309 | guchar *data; |
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310 | int rs; |
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311 | FILE *fp; |
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312 | volatile GdkPixbuf *pb = 0; |
| 108 | |
313 | |
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314 | RETVAL = 0; |
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315 | |
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316 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
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317 | |
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318 | if (!fp) |
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319 | XSRETURN_UNDEF; |
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320 | |
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321 | cinfo.err = jpeg_std_error (&jerr.err); |
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322 | |
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323 | jerr.err.error_exit = cv_error_exit; |
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324 | jerr.err.output_message = cv_error_output; |
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325 | |
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326 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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327 | { |
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328 | fclose (fp); |
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329 | jpeg_destroy_decompress (&cinfo); |
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330 | |
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331 | if (pb) |
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332 | g_object_unref ((gpointer)pb); |
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333 | |
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334 | XSRETURN_UNDEF; |
|
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335 | } |
|
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336 | |
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337 | jpeg_create_decompress (&cinfo); |
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338 | |
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339 | jpeg_stdio_src (&cinfo, fp); |
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340 | jpeg_read_header (&cinfo, TRUE); |
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341 | |
|
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342 | cinfo.dct_method = JDCT_DEFAULT; |
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343 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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344 | cinfo.do_block_smoothing = FALSE; |
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345 | cinfo.out_color_space = JCS_RGB; |
|
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346 | cinfo.quantize_colors = FALSE; |
|
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347 | |
|
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348 | cinfo.scale_num = 1; |
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349 | cinfo.scale_denom = 1; |
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350 | |
|
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351 | jpeg_calc_output_dimensions (&cinfo); |
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352 | |
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353 | if (thumbnail) |
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354 | { |
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355 | cinfo.dct_method = JDCT_FASTEST; |
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356 | cinfo.do_fancy_upsampling = FALSE; |
|
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357 | |
|
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358 | while (cinfo.scale_denom < 8 |
|
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359 | && cinfo.output_width >= IW*4 |
|
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360 | && cinfo.output_height >= IH*4) |
|
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361 | { |
|
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362 | cinfo.scale_denom <<= 1; |
|
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363 | jpeg_calc_output_dimensions (&cinfo); |
|
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364 | } |
|
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365 | } |
|
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366 | |
|
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367 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
|
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368 | if (!RETVAL) |
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369 | longjmp (jerr.setjmp_buffer, 2); |
|
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370 | |
| 109 | dst = gdk_pixbuf_get_pixels (RETVAL); |
371 | data = gdk_pixbuf_get_pixels (RETVAL); |
| 110 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
372 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
| 111 | |
373 | |
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374 | if (cinfo.output_components != 3) |
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375 | longjmp (jerr.setjmp_buffer, 3); |
|
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376 | |
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377 | jpeg_start_decompress (&cinfo); |
|
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378 | |
|
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379 | while (cinfo.output_scanline < cinfo.output_height) |
|
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380 | { |
|
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381 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
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382 | JSAMPROW rp[4]; |
|
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383 | |
|
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384 | rp [0] = data + cinfo.output_scanline * rs; |
|
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385 | rp [1] = (guchar *)rp [0] + rs; |
|
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386 | rp [2] = (guchar *)rp [1] + rs; |
|
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387 | rp [3] = (guchar *)rp [2] + rs; |
|
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388 | |
|
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389 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
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390 | } |
|
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391 | |
|
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392 | jpeg_finish_decompress (&cinfo); |
|
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393 | fclose (fp); |
|
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394 | jpeg_destroy_decompress (&cinfo); |
|
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395 | } |
|
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396 | OUTPUT: |
|
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397 | RETVAL |
|
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398 | |
|
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399 | void |
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400 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
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401 | PPCODE: |
|
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402 | { |
|
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403 | int w = gdk_pixbuf_get_width (a); |
|
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404 | int h = gdk_pixbuf_get_height (a); |
|
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405 | int sa = gdk_pixbuf_get_rowstride (a); |
|
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406 | int sb = gdk_pixbuf_get_rowstride (b); |
|
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407 | |
|
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408 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
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409 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
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410 | |
|
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411 | int x, y; |
|
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412 | |
|
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413 | assert (w == gdk_pixbuf_get_width (b)); |
|
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414 | assert (h == gdk_pixbuf_get_height (b)); |
|
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415 | |
|
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416 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
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417 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
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418 | |
|
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419 | double diff = 0.; |
|
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420 | int peak = 0; |
|
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421 | |
|
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422 | if (w && h) |
| 112 | for (y = 0; y < h; y++) |
423 | for (y = 0; y < h; y++) |
|
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424 | { |
|
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425 | guchar *pa_ = pa + y * sa; |
|
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426 | guchar *pb_ = pb + y * sb; |
|
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427 | |
| 113 | for (x = 0; x < w; x++) |
428 | for (x = 0; x < w; x++) |
| 114 | for (i = 0; i < bpp; i++) |
429 | { |
| 115 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
430 | int d; |
|
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431 | |
|
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432 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
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433 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
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434 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
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435 | } |
|
|
436 | } |
|
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437 | |
|
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438 | EXTEND (SP, 2); |
|
|
439 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
440 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
| 116 | } |
441 | } |
| 117 | OUTPUT: |
442 | |
| 118 | RETVAL |
443 | ############################################################################# |
| 119 | |
444 | |
| 120 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
445 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
| 121 | |
446 | |
|
|
447 | # currently only works for filenames (octet strings) |
|
|
448 | |
|
|
449 | SV * |
|
|
450 | foldcase (SV *pathsv) |
|
|
451 | PROTOTYPE: $ |
|
|
452 | CODE: |
|
|
453 | { |
|
|
454 | STRLEN plen; |
|
|
455 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
456 | U8 *pend = path + plen; |
|
|
457 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
458 | |
|
|
459 | while (path < pend) |
|
|
460 | { |
|
|
461 | U8 ch = *path; |
|
|
462 | |
|
|
463 | if (ch >= 'a' && ch <= 'z') |
|
|
464 | *dstp++ = *path++; |
|
|
465 | else if (ch >= 'A' && ch <= 'Z') |
|
|
466 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
467 | else if (ch >= '0' && ch <= '9') |
|
|
468 | { |
|
|
469 | STRLEN el, nl = 0; |
|
|
470 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
471 | path++, nl++; |
|
|
472 | |
|
|
473 | for (el = nl; el < 6; el++) |
|
|
474 | *dstp++ = '0'; |
|
|
475 | |
|
|
476 | memcpy (dstp, path - nl, nl); |
|
|
477 | dstp += nl; |
|
|
478 | } |
|
|
479 | else |
|
|
480 | *dstp++ = *path++; |
|
|
481 | #if 0 |
|
|
482 | else |
|
|
483 | { |
|
|
484 | STRLEN cl; |
|
|
485 | to_utf8_fold (path, dstp, &cl); |
|
|
486 | dstp += cl; |
|
|
487 | path += is_utf8_char (path); |
|
|
488 | } |
|
|
489 | #endif |
|
|
490 | } |
|
|
491 | |
|
|
492 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
493 | } |
|
|
494 | OUTPUT: |
|
|
495 | RETVAL |
|
|
496 | |
| 122 | GdkPixbuf_noinc * |
497 | GdkPixbuf_noinc * |
| 123 | p7_to_pb (int w, int h, guchar *src) |
498 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
499 | PROTOTYPE: @ |
| 124 | CODE: |
500 | CODE: |
| 125 | { |
501 | { |
| 126 | int x, y; |
502 | int x, y; |
| 127 | guchar *dst, *d; |
503 | guchar *dst, *d; |
| 128 | int dstr; |
504 | int dstr; |
|
|
505 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
| 129 | |
506 | |
| 130 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
507 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 131 | dst = gdk_pixbuf_get_pixels (RETVAL); |
508 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 132 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
509 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 133 | |
510 | |
| … | |
… | |
| 142 | } |
519 | } |
| 143 | } |
520 | } |
| 144 | OUTPUT: |
521 | OUTPUT: |
| 145 | RETVAL |
522 | RETVAL |
| 146 | |
523 | |
|
|
524 | ############################################################################# |
|
|
525 | |
|
|
526 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
527 | |
|
|
528 | void |
|
|
529 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
530 | CODE: |
|
|
531 | { |
|
|
532 | int w = gdk_pixbuf_get_width (pb); |
|
|
533 | int h = gdk_pixbuf_get_height (pb); |
|
|
534 | int x, y, i; |
|
|
535 | guchar *dst; |
|
|
536 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
537 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
538 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
539 | |
|
|
540 | a85_init (); |
|
|
541 | |
|
|
542 | for (y = 0; y < h; y++) |
|
|
543 | for (x = 0; x < w; x++) |
|
|
544 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
545 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
546 | |
|
|
547 | a85_finish (fp); |
|
|
548 | } |
|
|
549 | |
|
|
550 | void |
|
|
551 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
552 | CODE: |
|
|
553 | { |
|
|
554 | int w = gdk_pixbuf_get_width (pb); |
|
|
555 | int h = gdk_pixbuf_get_height (pb); |
|
|
556 | int x, y, i; |
|
|
557 | guchar *dst; |
|
|
558 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
559 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
560 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
561 | |
|
|
562 | for (y = 0; y < h; y++) |
|
|
563 | for (x = 0; x < w; x++) |
|
|
564 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
565 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
566 | } |
|
|
567 | |
|
|
568 | ############################################################################# |
|
|
569 | |
|
|
570 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
571 | |
| 147 | SV * |
572 | SV * |
| 148 | pb_to_p7 (GdkPixbuf *pb) |
573 | pb_to_hv84 (GdkPixbuf *pb) |
| 149 | CODE: |
574 | CODE: |
| 150 | { |
575 | { |
| 151 | int w = gdk_pixbuf_get_width (pb); |
576 | int w = gdk_pixbuf_get_width (pb); |
| 152 | int h = gdk_pixbuf_get_height (pb); |
577 | int h = gdk_pixbuf_get_height (pb); |
| 153 | int x, y; |
578 | int x, y; |
| 154 | guchar *dst; |
579 | guchar *dst; |
| 155 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
580 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 156 | guchar *src = gdk_pixbuf_get_pixels (pb); |
581 | guchar *src = gdk_pixbuf_get_pixels (pb); |
| 157 | int sstr = gdk_pixbuf_get_rowstride (pb); |
582 | int sstr = gdk_pixbuf_get_rowstride (pb); |
| 158 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
| 159 | int seed = 77; |
|
|
| 160 | |
583 | |
| 161 | RETVAL = newSV (w * h); |
584 | RETVAL = newSV (6 * 8 * 12 / 8); |
| 162 | SvPOK_only (RETVAL); |
585 | SvPOK_only (RETVAL); |
| 163 | SvCUR_set (RETVAL, w * h); |
586 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
| 164 | |
587 | |
| 165 | dst = SvPVX (RETVAL); |
588 | dst = (guchar *)SvPVX (RETVAL); |
| 166 | |
|
|
| 167 | memset (Er, 0, sizeof (int) * IW); |
|
|
| 168 | memset (Eg, 0, sizeof (int) * IW); |
|
|
| 169 | memset (Eb, 0, sizeof (int) * IW); |
|
|
| 170 | |
589 | |
| 171 | /* some primitive error distribution + random dithering */ |
590 | /* some primitive error distribution + random dithering */ |
| 172 | |
591 | |
| 173 | for (y = 0; y < h; y++) |
592 | for (y = 0; y < h; y++) |
| 174 | { |
593 | { |
| 175 | int er = 0, eg = 0, eb = 0; |
594 | guchar *p = src + y * sstr; |
| 176 | |
595 | |
| 177 | for (x = 0; x < w; x++) |
596 | for (x = 0; x < w; x += 2) |
| 178 | { |
597 | { |
| 179 | int r, g, b; |
598 | unsigned int r, g, b, h, s, v, H, V1, V2; |
| 180 | guchar *p = src + x * bpp + y * sstr; |
|
|
| 181 | |
599 | |
| 182 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
600 | if (bpp == 3) |
| 183 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
601 | r = *p++, g = *p++, b = *p++; |
| 184 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
602 | else if (bpp == 1) |
|
|
603 | r = g = b = *p++; |
|
|
604 | else |
|
|
605 | abort (); |
| 185 | |
606 | |
| 186 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
607 | rgb_to_hsv (r, g, b, &h, &s, &v); |
| 187 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
| 188 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
| 189 | |
608 | |
| 190 | er += p[0] - (r * 255 + 4) / 7; |
609 | H = (h * 15 / 255) << 4; |
| 191 | eg += p[1] - (g * 255 + 4) / 7; |
610 | V1 = v; |
| 192 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
| 193 | |
611 | |
| 194 | Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; |
612 | if (bpp == 3) |
| 195 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; |
613 | r = *p++, g = *p++, b = *p++; |
| 196 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; |
614 | else if (bpp == 1) |
|
|
615 | r = g = b = *p++; |
|
|
616 | else |
|
|
617 | abort (); |
| 197 | |
618 | |
| 198 | *dst++ = r << 5 | g << 2 | b; |
619 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
620 | |
|
|
621 | H |= h * 15 / 255; |
|
|
622 | V2 = v; |
|
|
623 | |
|
|
624 | *dst++ = H; |
|
|
625 | *dst++ = V1; |
|
|
626 | *dst++ = V2; |
| 199 | } |
627 | } |
| 200 | } |
628 | } |
| 201 | } |
629 | } |
| 202 | OUTPUT: |
630 | OUTPUT: |
| 203 | RETVAL |
631 | RETVAL |
| 204 | |
632 | |
|
|
633 | SV * |
|
|
634 | hv84_to_av (unsigned char *hv84) |
|
|
635 | CODE: |
|
|
636 | { |
|
|
637 | int i = 72 / 3; |
|
|
638 | AV *av = newAV (); |
|
|
639 | |
|
|
640 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
641 | while (i--) |
|
|
642 | { |
|
|
643 | int h = *hv84++; |
|
|
644 | int v1 = *hv84++; |
|
|
645 | int v2 = *hv84++; |
|
|
646 | |
|
|
647 | av_push (av, newSViv (v1)); |
|
|
648 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
649 | av_push (av, newSViv (v2)); |
|
|
650 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
651 | } |
|
|
652 | } |
|
|
653 | OUTPUT: |
|
|
654 | RETVAL |
|
|
655 | |
|
|
656 | ############################################################################# |
|
|
657 | |
| 205 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
658 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
| 206 | |
659 | |
| 207 | void |
660 | SV * |
| 208 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
661 | extract_features (SV *ar) |
| 209 | CODE: |
662 | CODE: |
| 210 | { |
663 | { |
| 211 | int w = gdk_pixbuf_get_width (pb); |
664 | int i; |
| 212 | int h = gdk_pixbuf_get_height (pb); |
665 | AV *av, *result; |
| 213 | int x, y, i; |
|
|
| 214 | guchar *dst; |
|
|
| 215 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
|
|
| 216 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
| 217 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
| 218 | |
666 | |
| 219 | a85_init (); |
667 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
668 | croak ("Not an array ref as first argument to extract_features"); |
| 220 | |
669 | |
| 221 | for (y = 0; y < h; y++) |
670 | av = (AV *) SvRV (ar); |
| 222 | for (x = 0; x < w; x++) |
671 | result = newAV (); |
| 223 | for (i = 0; i < 3; i++) |
|
|
| 224 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
| 225 | |
672 | |
| 226 | a85_finish (fp); |
673 | for (i = 0; i <= av_len (av); ++i) |
| 227 | } |
674 | { |
|
|
675 | SV *sv = *av_fetch (av, i, 1); |
|
|
676 | SV *histsv = newSV (9 * sizeof (float) + 1); |
| 228 | |
677 | |
|
|
678 | SvPOK_on (histsv); |
|
|
679 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
680 | float *hist = (float *)SvPVX (histsv); |
| 229 | |
681 | |
|
|
682 | struct feature f_h, f_s, f_v; |
|
|
683 | feature_init (&f_h); |
|
|
684 | feature_init (&f_s); |
|
|
685 | feature_init (&f_v); |
| 230 | |
686 | |
|
|
687 | { |
|
|
688 | STRLEN len; |
|
|
689 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
690 | while (len >= 3) |
|
|
691 | { |
|
|
692 | unsigned int r, g, b, h, s, v; |
|
|
693 | r = *buf++; g = *buf++; b = *buf++; |
|
|
694 | rgb_to_hsv (r, g, b, &h, &s, &v); |
| 231 | |
695 | |
|
|
696 | feature_update_pass_1 (&f_h, h); |
|
|
697 | feature_update_pass_1 (&f_s, s); |
|
|
698 | feature_update_pass_1 (&f_v, v); |
|
|
699 | |
|
|
700 | len -= 3; |
|
|
701 | } |
|
|
702 | |
|
|
703 | feature_finish_pass_1 (&f_h); |
|
|
704 | feature_finish_pass_1 (&f_s); |
|
|
705 | feature_finish_pass_1 (&f_v); |
|
|
706 | } |
|
|
707 | |
|
|
708 | { |
|
|
709 | STRLEN len; |
|
|
710 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
711 | while (len >= 3) |
|
|
712 | { |
|
|
713 | unsigned int r, g, b, h, s, v; |
|
|
714 | r = *buf++; g = *buf++; b = *buf++; |
|
|
715 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
716 | |
|
|
717 | feature_update_pass_2 (&f_h, h); |
|
|
718 | feature_update_pass_2 (&f_s, s); |
|
|
719 | feature_update_pass_2 (&f_v, v); |
|
|
720 | |
|
|
721 | len -= 3; |
|
|
722 | } |
|
|
723 | |
|
|
724 | feature_finish_pass_2 (&f_h); |
|
|
725 | feature_finish_pass_2 (&f_s); |
|
|
726 | feature_finish_pass_2 (&f_v); |
|
|
727 | } |
|
|
728 | |
|
|
729 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
730 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
731 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
732 | |
|
|
733 | av_push (result, histsv); |
|
|
734 | } |
|
|
735 | |
|
|
736 | RETVAL = newRV_noinc ((SV *)result); |
|
|
737 | } |
|
|
738 | OUTPUT: |
|
|
739 | RETVAL |
|
|
740 | |
