| 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 | |
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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 | |
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23 | #define IW 80 /* MUST match Schnauzer.pm! */ |
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24 | #define IH 60 /* MUST match Schnauzer.pm! */ |
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25 | |
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26 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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27 | |
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28 | #define LINELENGTH 240 |
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29 | |
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30 | #define ELLIPSIS "\xe2\x80\xa6" |
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31 | |
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32 | typedef char *octet_string; |
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33 | |
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34 | struct jpg_err_mgr |
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35 | { |
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36 | struct jpeg_error_mgr err; |
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37 | jmp_buf setjmp_buffer; |
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38 | }; |
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39 | |
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40 | static void |
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41 | cv_error_exit (j_common_ptr cinfo) |
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42 | { |
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43 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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44 | } |
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45 | |
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46 | static void |
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47 | cv_error_output (j_common_ptr cinfo) |
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48 | { |
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49 | return; |
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50 | } |
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51 | |
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52 | static void |
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53 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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54 | unsigned int *h, unsigned int *s, unsigned int *v) |
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55 | { |
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56 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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57 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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58 | unsigned int delta = mx - mn; |
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59 | |
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60 | *v = mx; |
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61 | |
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62 | *s = mx ? delta * 255 / mx : 0; |
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63 | |
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64 | if (delta == 0) |
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65 | *h = 0; |
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66 | else |
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67 | { |
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68 | if (r == mx) |
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69 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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70 | else if (g == mx) |
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71 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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72 | else if (b == mx) |
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73 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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74 | |
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75 | *h &= 255; |
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76 | } |
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77 | } |
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78 | |
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79 | struct feature { |
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80 | float v1, v2, v3; // mean, square, cube |
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81 | int n; |
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82 | }; |
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83 | |
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84 | static void |
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85 | feature_init (struct feature *f) |
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86 | { |
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87 | f->v1 = 0.; |
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88 | f->v2 = 0.; |
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89 | f->v3 = 0.; |
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90 | f->n = 0; |
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91 | } |
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92 | |
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93 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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94 | // elmex ist schuld. |
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95 | static void |
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96 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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97 | { |
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98 | f->v1 += v; |
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99 | f->n += 1; |
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100 | } |
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101 | |
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102 | static void |
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103 | feature_finish_pass_1 (struct feature *f) |
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104 | { |
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105 | if (f->n < 1) |
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106 | return; |
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107 | |
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108 | f->v1 /= f->n; |
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109 | } |
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110 | |
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111 | static void |
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112 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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113 | { |
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114 | float d = v - f->v1; |
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115 | |
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116 | f->v2 += d * d; |
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117 | f->v3 += d * d * d; |
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118 | } |
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119 | |
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120 | static void |
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121 | feature_finish_pass_2 (struct feature *f) |
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122 | { |
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123 | if (f->n < 1) |
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124 | return; |
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125 | |
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126 | f->v2 /= f->n; |
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127 | f->v3 /= f->n; |
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128 | |
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129 | f->v1 /= 255.; |
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130 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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131 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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132 | } |
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133 | |
| 10 | static guint32 a85_val; |
134 | static guint32 a85_val; |
| 11 | static guint a85_cnt; |
135 | static guint a85_cnt; |
| 12 | static guchar a85_buf[80], *a85_ptr; |
136 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
| 13 | |
137 | |
| 14 | static void |
138 | static void |
| 15 | a85_init (void) |
139 | a85_init (void) |
| 16 | { |
140 | { |
| 17 | a85_cnt = 4; |
141 | a85_cnt = 4; |
| … | |
… | |
| 47 | } |
171 | } |
| 48 | } |
172 | } |
| 49 | |
173 | |
| 50 | } |
174 | } |
| 51 | |
175 | |
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176 | static void |
| 52 | a85_finish (PerlIO *fp) |
177 | a85_finish (PerlIO *fp) |
| 53 | { |
178 | { |
| 54 | while (a85_cnt != 4) |
179 | while (a85_cnt != 4) |
| 55 | a85_push (fp, 0); |
180 | a85_push (fp, 0); |
| 56 | |
181 | |
| … | |
… | |
| 59 | *a85_ptr++ = '\n'; |
184 | *a85_ptr++ = '\n'; |
| 60 | |
185 | |
| 61 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
186 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
| 62 | } |
187 | } |
| 63 | |
188 | |
|
|
189 | ///////////////////////////////////////////////////////////////////////////// |
|
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190 | |
| 64 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
191 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
| 65 | |
192 | |
| 66 | PROTOTYPES: ENABLE |
193 | PROTOTYPES: ENABLE |
| 67 | |
194 | |
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195 | # missing function in perl. really :) |
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196 | int |
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197 | common_prefix_length (a, b) |
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198 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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199 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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200 | CODE: |
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201 | RETVAL = 0; |
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202 | |
|
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203 | while (*a == *b && *a) |
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204 | { |
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205 | RETVAL += (*a & 0xc0) != 0x80; |
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206 | a++, b++; |
|
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207 | } |
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208 | |
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209 | OUTPUT: |
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210 | RETVAL |
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211 | |
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212 | const char * |
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213 | magic (octet_string path) |
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214 | CODE: |
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215 | { |
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216 | static magic_t cookie; |
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217 | |
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218 | if (!cookie) |
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219 | { |
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220 | cookie = magic_open (MAGIC_SYMLINK); |
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221 | |
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222 | if (cookie) |
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223 | magic_load (cookie, 0); |
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224 | else |
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225 | XSRETURN_UNDEF; |
|
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226 | } |
|
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227 | |
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228 | RETVAL = magic_file (cookie, path); |
|
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229 | } |
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230 | OUTPUT: |
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231 | RETVAL |
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232 | |
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233 | const char * |
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234 | magic_mime (octet_string path) |
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235 | CODE: |
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236 | { |
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237 | static magic_t cookie; |
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238 | |
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239 | if (!cookie) |
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240 | { |
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241 | cookie = magic_open (MAGIC_MIME | MAGIC_SYMLINK); |
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242 | |
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243 | if (cookie) |
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244 | magic_load (cookie, 0); |
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245 | else |
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246 | XSRETURN_UNDEF; |
|
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247 | } |
|
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248 | |
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249 | perlinterp_release (); |
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250 | RETVAL = magic_file (cookie, path); |
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251 | perlinterp_acquire (); |
|
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252 | } |
|
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253 | OUTPUT: |
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254 | RETVAL |
|
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255 | |
|
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256 | # missing/broken in Gtk2 perl module |
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257 | |
|
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258 | void |
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259 | gdk_window_clear_hints (GdkWindow *window) |
|
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260 | CODE: |
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261 | gdk_window_set_geometry_hints (window, 0, 0); |
|
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262 | |
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263 | gboolean |
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264 | gdk_net_wm_supports (GdkAtom property) |
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265 | CODE: |
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266 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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267 | RETVAL = gdk_net_wm_supports (property); |
|
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268 | #else |
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269 | RETVAL = 0; |
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270 | #endif |
|
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271 | OUTPUT: |
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272 | RETVAL |
|
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273 | |
| 68 | GdkPixbuf_noinc * |
274 | GdkPixbuf_noinc * |
| 69 | transpose (GdkPixbuf *pb) |
275 | dealpha_expose (GdkPixbuf *pb) |
| 70 | CODE: |
276 | CODE: |
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277 | perlinterp_release (); |
| 71 | { |
278 | { |
| 72 | int w = gdk_pixbuf_get_width (pb); |
279 | int w = gdk_pixbuf_get_width (pb); |
| 73 | int h = gdk_pixbuf_get_height (pb); |
280 | int h = gdk_pixbuf_get_height (pb); |
| 74 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
281 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 75 | int x, y, i; |
282 | int x, y, i; |
| 76 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
283 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
| 77 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
284 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 78 | |
285 | |
| 79 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
286 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 80 | |
287 | |
| 81 | dst = gdk_pixbuf_get_pixels (RETVAL); |
288 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 82 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
289 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 83 | |
290 | |
| 84 | for (y = 0; y < h; y++) |
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|
| 85 | for (x = 0; x < w; x++) |
291 | for (x = 0; x < w; x++) |
|
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292 | for (y = 0; y < h; y++) |
| 86 | for (i = 0; i < bpp; i++) |
293 | for (i = 0; i < 3; i++) |
| 87 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
294 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
| 88 | } |
295 | } |
|
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296 | perlinterp_acquire (); |
| 89 | OUTPUT: |
297 | OUTPUT: |
| 90 | RETVAL |
298 | RETVAL |
| 91 | |
299 | |
| 92 | GdkPixbuf_noinc * |
300 | GdkPixbuf_noinc * |
| 93 | flop (GdkPixbuf *pb) |
301 | rotate (GdkPixbuf *pb, int angle) |
| 94 | CODE: |
302 | CODE: |
| 95 | { |
303 | perlinterp_release (); |
| 96 | int w = gdk_pixbuf_get_width (pb); |
304 | if (angle < 0) |
| 97 | int h = gdk_pixbuf_get_height (pb); |
305 | angle += 360; |
| 98 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
306 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
| 99 | int x, y, i; |
307 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
| 100 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
308 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
| 101 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
309 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
|
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310 | : angle); |
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311 | perlinterp_acquire (); |
|
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312 | OUTPUT: |
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313 | RETVAL |
| 102 | |
314 | |
| 103 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
315 | GdkPixbuf_noinc * |
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316 | load_jpeg (SV *path, int thumbnail=0) |
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317 | CODE: |
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318 | { |
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319 | struct jpeg_decompress_struct cinfo; |
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320 | struct jpg_err_mgr jerr; |
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321 | guchar *data; |
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322 | int rs; |
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323 | FILE *fp; |
|
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324 | volatile GdkPixbuf *pb = 0; |
| 104 | |
325 | |
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326 | RETVAL = 0; |
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327 | |
|
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328 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
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329 | |
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330 | if (!fp) |
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331 | XSRETURN_UNDEF; |
|
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332 | |
|
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333 | perlinterp_release (); |
|
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334 | |
|
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335 | cinfo.err = jpeg_std_error (&jerr.err); |
|
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336 | |
|
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337 | jerr.err.error_exit = cv_error_exit; |
|
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338 | jerr.err.output_message = cv_error_output; |
|
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339 | |
|
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340 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
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341 | { |
|
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342 | fclose (fp); |
|
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343 | jpeg_destroy_decompress (&cinfo); |
|
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344 | |
|
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345 | if (pb) |
|
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346 | g_object_unref ((gpointer)pb); |
|
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347 | |
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348 | perlinterp_acquire (); |
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349 | XSRETURN_UNDEF; |
|
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350 | } |
|
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351 | |
|
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352 | jpeg_create_decompress (&cinfo); |
|
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353 | |
|
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354 | jpeg_stdio_src (&cinfo, fp); |
|
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355 | jpeg_read_header (&cinfo, TRUE); |
|
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356 | |
|
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357 | cinfo.dct_method = JDCT_DEFAULT; |
|
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358 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
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359 | cinfo.do_block_smoothing = FALSE; |
|
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360 | cinfo.out_color_space = JCS_RGB; |
|
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361 | cinfo.quantize_colors = FALSE; |
|
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362 | |
|
|
363 | cinfo.scale_num = 1; |
|
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364 | cinfo.scale_denom = 1; |
|
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365 | |
|
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366 | jpeg_calc_output_dimensions (&cinfo); |
|
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367 | |
|
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368 | if (thumbnail) |
|
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369 | { |
|
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370 | cinfo.dct_method = JDCT_FASTEST; |
|
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371 | cinfo.do_fancy_upsampling = FALSE; |
|
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372 | |
|
|
373 | while (cinfo.scale_denom < 8 |
|
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374 | && cinfo.output_width >= IW*4 |
|
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375 | && cinfo.output_height >= IH*4) |
|
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376 | { |
|
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377 | cinfo.scale_denom <<= 1; |
|
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378 | jpeg_calc_output_dimensions (&cinfo); |
|
|
379 | } |
|
|
380 | } |
|
|
381 | |
|
|
382 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
|
|
383 | if (!RETVAL) |
|
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384 | longjmp (jerr.setjmp_buffer, 2); |
|
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385 | |
| 105 | dst = gdk_pixbuf_get_pixels (RETVAL); |
386 | data = gdk_pixbuf_get_pixels (RETVAL); |
| 106 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
387 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
| 107 | |
388 | |
|
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389 | if (cinfo.output_components != 3) |
|
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390 | longjmp (jerr.setjmp_buffer, 3); |
|
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391 | |
|
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392 | jpeg_start_decompress (&cinfo); |
|
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393 | |
|
|
394 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
395 | { |
|
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396 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
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397 | JSAMPROW rp[4]; |
|
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398 | |
|
|
399 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
400 | rp [1] = (guchar *)rp [0] + rs; |
|
|
401 | rp [2] = (guchar *)rp [1] + rs; |
|
|
402 | rp [3] = (guchar *)rp [2] + rs; |
|
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403 | |
|
|
404 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
405 | } |
|
|
406 | |
|
|
407 | jpeg_finish_decompress (&cinfo); |
|
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408 | fclose (fp); |
|
|
409 | jpeg_destroy_decompress (&cinfo); |
|
|
410 | perlinterp_acquire (); |
|
|
411 | } |
|
|
412 | OUTPUT: |
|
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413 | RETVAL |
|
|
414 | |
|
|
415 | void |
|
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416 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
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417 | PPCODE: |
|
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418 | perlinterp_release (); |
|
|
419 | { |
|
|
420 | int w = gdk_pixbuf_get_width (a); |
|
|
421 | int h = gdk_pixbuf_get_height (a); |
|
|
422 | |
|
|
423 | int sa = gdk_pixbuf_get_rowstride (a); |
|
|
424 | int sb = gdk_pixbuf_get_rowstride (b); |
|
|
425 | |
|
|
426 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
|
427 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
|
428 | |
|
|
429 | int x, y; |
|
|
430 | |
|
|
431 | assert (w == gdk_pixbuf_get_width (b)); |
|
|
432 | assert (h == gdk_pixbuf_get_height (b)); |
|
|
433 | |
|
|
434 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
|
435 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
|
436 | |
|
|
437 | double diff = 0.; |
|
|
438 | int peak = 0; |
|
|
439 | |
|
|
440 | if (w && h) |
| 108 | for (y = 0; y < h; y++) |
441 | for (y = 0; y < h; y++) |
|
|
442 | { |
|
|
443 | guchar *pa_ = pa + y * sa; |
|
|
444 | guchar *pb_ = pb + y * sb; |
|
|
445 | |
| 109 | for (x = 0; x < w; x++) |
446 | for (x = 0; x < w; x++) |
| 110 | for (i = 0; i < bpp; i++) |
447 | { |
| 111 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
448 | int d; |
|
|
449 | |
|
|
450 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
451 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
452 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
453 | } |
|
|
454 | } |
|
|
455 | |
|
|
456 | perlinterp_acquire (); |
|
|
457 | |
|
|
458 | EXTEND (SP, 2); |
|
|
459 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
460 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
| 112 | } |
461 | } |
| 113 | OUTPUT: |
462 | |
| 114 | RETVAL |
463 | ############################################################################# |
| 115 | |
464 | |
| 116 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
465 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
| 117 | |
466 | |
|
|
467 | # currently only works for filenames (octet strings) |
|
|
468 | |
|
|
469 | SV * |
|
|
470 | foldcase (SV *pathsv) |
|
|
471 | PROTOTYPE: $ |
|
|
472 | CODE: |
|
|
473 | { |
|
|
474 | STRLEN plen; |
|
|
475 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
476 | U8 *pend = path + plen; |
|
|
477 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
478 | |
|
|
479 | while (path < pend) |
|
|
480 | { |
|
|
481 | U8 ch = *path; |
|
|
482 | |
|
|
483 | if (ch >= 'a' && ch <= 'z') |
|
|
484 | *dstp++ = *path++; |
|
|
485 | else if (ch >= 'A' && ch <= 'Z') |
|
|
486 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
487 | else if (ch >= '0' && ch <= '9') |
|
|
488 | { |
|
|
489 | STRLEN el, nl = 0; |
|
|
490 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
491 | path++, nl++; |
|
|
492 | |
|
|
493 | for (el = nl; el < 6; el++) |
|
|
494 | *dstp++ = '0'; |
|
|
495 | |
|
|
496 | memcpy (dstp, path - nl, nl); |
|
|
497 | dstp += nl; |
|
|
498 | } |
|
|
499 | else |
|
|
500 | *dstp++ = *path++; |
|
|
501 | #if 0 |
|
|
502 | else |
|
|
503 | { |
|
|
504 | STRLEN cl; |
|
|
505 | to_utf8_fold (path, dstp, &cl); |
|
|
506 | dstp += cl; |
|
|
507 | path += is_utf8_char (path); |
|
|
508 | } |
|
|
509 | #endif |
|
|
510 | } |
|
|
511 | |
|
|
512 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
513 | } |
|
|
514 | OUTPUT: |
|
|
515 | RETVAL |
|
|
516 | |
| 118 | GdkPixbuf_noinc * |
517 | GdkPixbuf_noinc * |
| 119 | p7_to_pb (int w, int h, guchar *src) |
518 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
519 | PROTOTYPE: @ |
| 120 | CODE: |
520 | CODE: |
| 121 | { |
521 | { |
| 122 | int x, y; |
522 | int x, y; |
| 123 | guchar *dst, *d; |
523 | guchar *dst, *d; |
| 124 | int dstr; |
524 | int dstr; |
|
|
525 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
| 125 | |
526 | |
| 126 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
527 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 127 | dst = gdk_pixbuf_get_pixels (RETVAL); |
528 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 128 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
529 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 129 | |
530 | |
| … | |
… | |
| 138 | } |
539 | } |
| 139 | } |
540 | } |
| 140 | OUTPUT: |
541 | OUTPUT: |
| 141 | RETVAL |
542 | RETVAL |
| 142 | |
543 | |
|
|
544 | ############################################################################# |
|
|
545 | |
|
|
546 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
547 | |
|
|
548 | void |
|
|
549 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
550 | CODE: |
|
|
551 | { |
|
|
552 | int w = gdk_pixbuf_get_width (pb); |
|
|
553 | int h = gdk_pixbuf_get_height (pb); |
|
|
554 | int x, y, i; |
|
|
555 | guchar *dst; |
|
|
556 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
557 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
558 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
559 | |
|
|
560 | a85_init (); |
|
|
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 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
566 | |
|
|
567 | a85_finish (fp); |
|
|
568 | } |
|
|
569 | |
|
|
570 | void |
|
|
571 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
572 | CODE: |
|
|
573 | { |
|
|
574 | int w = gdk_pixbuf_get_width (pb); |
|
|
575 | int h = gdk_pixbuf_get_height (pb); |
|
|
576 | int x, y, i; |
|
|
577 | guchar *dst; |
|
|
578 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
579 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
580 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
581 | |
|
|
582 | for (y = 0; y < h; y++) |
|
|
583 | for (x = 0; x < w; x++) |
|
|
584 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
585 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
586 | } |
|
|
587 | |
|
|
588 | ############################################################################# |
|
|
589 | |
|
|
590 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
591 | |
| 143 | SV * |
592 | SV * |
| 144 | pb_to_p7 (GdkPixbuf *pb) |
593 | pb_to_hv84 (GdkPixbuf *pb) |
| 145 | CODE: |
594 | CODE: |
| 146 | { |
595 | { |
| 147 | int w = gdk_pixbuf_get_width (pb); |
596 | int w = gdk_pixbuf_get_width (pb); |
| 148 | int h = gdk_pixbuf_get_height (pb); |
597 | int h = gdk_pixbuf_get_height (pb); |
| 149 | int x, y; |
598 | int x, y; |
| 150 | guchar *dst; |
599 | guchar *dst; |
| 151 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
600 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 152 | guchar *src = gdk_pixbuf_get_pixels (pb); |
601 | guchar *src = gdk_pixbuf_get_pixels (pb); |
| 153 | int sstr = gdk_pixbuf_get_rowstride (pb); |
602 | int sstr = gdk_pixbuf_get_rowstride (pb); |
| 154 | |
603 | |
| 155 | RETVAL = newSV (w * h); |
604 | RETVAL = newSV (6 * 8 * 12 / 8); |
| 156 | SvPOK_only (RETVAL); |
605 | SvPOK_only (RETVAL); |
| 157 | SvCUR_set (RETVAL, w * h); |
606 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
| 158 | |
607 | |
| 159 | dst = SvPVX (RETVAL); |
608 | dst = (guchar *)SvPVX (RETVAL); |
|
|
609 | |
|
|
610 | /* some primitive error distribution + random dithering */ |
| 160 | |
611 | |
| 161 | for (y = 0; y < h; y++) |
612 | for (y = 0; y < h; y++) |
| 162 | { |
613 | { |
| 163 | /* use a very primitive form of error distribution. */ |
614 | guchar *p = src + y * sstr; |
| 164 | int er = 0, eg = 0, eb = 0; |
|
|
| 165 | |
615 | |
| 166 | for (x = 0; x < w; x++) |
616 | for (x = 0; x < w; x += 2) |
| 167 | { |
617 | { |
| 168 | int r, g, b; |
618 | unsigned int r, g, b, h, s, v, H, V1, V2; |
| 169 | guchar *p = src + x * bpp + y * sstr; |
|
|
| 170 | |
619 | |
| 171 | r = ((p[0] + er) * 7 + 128) / 255; |
620 | if (bpp == 3) |
| 172 | g = ((p[1] + eg) * 7 + 128) / 255; |
621 | r = *p++, g = *p++, b = *p++; |
| 173 | b = ((p[2] + eb) * 3 + 128) / 255; |
622 | else if (bpp == 1) |
|
|
623 | r = g = b = *p++; |
|
|
624 | else |
|
|
625 | abort (); |
| 174 | |
626 | |
| 175 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
627 | rgb_to_hsv (r, g, b, &h, &s, &v); |
| 176 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
| 177 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
| 178 | |
628 | |
| 179 | er += p[0] - (r * 255 + 4) / 7; |
629 | H = (h * 15 / 255) << 4; |
| 180 | eg += p[1] - (g * 255 + 4) / 7; |
630 | V1 = v; |
| 181 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
| 182 | |
631 | |
| 183 | *dst++ = r << 5 | g << 2 | b; |
632 | if (bpp == 3) |
|
|
633 | r = *p++, g = *p++, b = *p++; |
|
|
634 | else if (bpp == 1) |
|
|
635 | r = g = b = *p++; |
|
|
636 | else |
|
|
637 | abort (); |
|
|
638 | |
|
|
639 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
640 | |
|
|
641 | H |= h * 15 / 255; |
|
|
642 | V2 = v; |
|
|
643 | |
|
|
644 | *dst++ = H; |
|
|
645 | *dst++ = V1; |
|
|
646 | *dst++ = V2; |
| 184 | } |
647 | } |
| 185 | } |
648 | } |
| 186 | } |
649 | } |
| 187 | OUTPUT: |
650 | OUTPUT: |
| 188 | RETVAL |
651 | RETVAL |
| 189 | |
652 | |
|
|
653 | SV * |
|
|
654 | hv84_to_av (unsigned char *hv84) |
|
|
655 | CODE: |
|
|
656 | { |
|
|
657 | int i = 72 / 3; |
|
|
658 | AV *av = newAV (); |
|
|
659 | |
|
|
660 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
661 | while (i--) |
|
|
662 | { |
|
|
663 | int h = *hv84++; |
|
|
664 | int v1 = *hv84++; |
|
|
665 | int v2 = *hv84++; |
|
|
666 | |
|
|
667 | av_push (av, newSViv (v1)); |
|
|
668 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
669 | av_push (av, newSViv (v2)); |
|
|
670 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
671 | } |
|
|
672 | } |
|
|
673 | OUTPUT: |
|
|
674 | RETVAL |
|
|
675 | |
|
|
676 | ############################################################################# |
|
|
677 | |
| 190 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
678 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
| 191 | |
679 | |
| 192 | void |
680 | SV * |
| 193 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
681 | extract_features (SV *ar) |
| 194 | CODE: |
682 | CODE: |
| 195 | { |
683 | { |
| 196 | int w = gdk_pixbuf_get_width (pb); |
684 | int i; |
| 197 | int h = gdk_pixbuf_get_height (pb); |
685 | AV *av, *result; |
| 198 | int x, y, i; |
|
|
| 199 | guchar *dst; |
|
|
| 200 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
|
|
| 201 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
| 202 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
| 203 | |
686 | |
| 204 | a85_init (); |
687 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
688 | croak ("Not an array ref as first argument to extract_features"); |
| 205 | |
689 | |
| 206 | for (y = 0; y < h; y++) |
690 | av = (AV *) SvRV (ar); |
| 207 | for (x = 0; x < w; x++) |
691 | result = newAV (); |
| 208 | for (i = 0; i < 3; i++) |
|
|
| 209 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
| 210 | |
692 | |
| 211 | a85_finish (fp); |
693 | for (i = 0; i <= av_len (av); ++i) |
| 212 | } |
694 | { |
|
|
695 | SV *sv = *av_fetch (av, i, 1); |
|
|
696 | SV *histsv = newSV (9 * sizeof (float) + 1); |
| 213 | |
697 | |
|
|
698 | SvPOK_on (histsv); |
|
|
699 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
700 | float *hist = (float *)SvPVX (histsv); |
| 214 | |
701 | |
|
|
702 | struct feature f_h, f_s, f_v; |
|
|
703 | feature_init (&f_h); |
|
|
704 | feature_init (&f_s); |
|
|
705 | feature_init (&f_v); |
| 215 | |
706 | |
|
|
707 | { |
|
|
708 | STRLEN len; |
|
|
709 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
710 | while (len >= 3) |
|
|
711 | { |
|
|
712 | unsigned int r, g, b, h, s, v; |
|
|
713 | r = *buf++; g = *buf++; b = *buf++; |
|
|
714 | rgb_to_hsv (r, g, b, &h, &s, &v); |
| 216 | |
715 | |
|
|
716 | feature_update_pass_1 (&f_h, h); |
|
|
717 | feature_update_pass_1 (&f_s, s); |
|
|
718 | feature_update_pass_1 (&f_v, v); |
|
|
719 | |
|
|
720 | len -= 3; |
|
|
721 | } |
|
|
722 | |
|
|
723 | feature_finish_pass_1 (&f_h); |
|
|
724 | feature_finish_pass_1 (&f_s); |
|
|
725 | feature_finish_pass_1 (&f_v); |
|
|
726 | } |
|
|
727 | |
|
|
728 | { |
|
|
729 | STRLEN len; |
|
|
730 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
731 | while (len >= 3) |
|
|
732 | { |
|
|
733 | unsigned int r, g, b, h, s, v; |
|
|
734 | r = *buf++; g = *buf++; b = *buf++; |
|
|
735 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
736 | |
|
|
737 | feature_update_pass_2 (&f_h, h); |
|
|
738 | feature_update_pass_2 (&f_s, s); |
|
|
739 | feature_update_pass_2 (&f_v, v); |
|
|
740 | |
|
|
741 | len -= 3; |
|
|
742 | } |
|
|
743 | |
|
|
744 | feature_finish_pass_2 (&f_h); |
|
|
745 | feature_finish_pass_2 (&f_s); |
|
|
746 | feature_finish_pass_2 (&f_v); |
|
|
747 | } |
|
|
748 | |
|
|
749 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
750 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
751 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
752 | |
|
|
753 | av_push (result, histsv); |
|
|
754 | } |
|
|
755 | |
|
|
756 | RETVAL = newRV_noinc ((SV *)result); |
|
|
757 | } |
|
|
758 | OUTPUT: |
|
|
759 | RETVAL |
|
|
760 | |
