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 | #define IW 80 /* MUST match Schnauzer.pm! */ |
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20 | #define IH 60 /* MUST match Schnauzer.pm! */ |
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21 | |
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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 | struct jpg_err_mgr |
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29 | { |
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30 | struct jpeg_error_mgr err; |
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31 | jmp_buf setjmp_buffer; |
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32 | }; |
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33 | |
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34 | static void |
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35 | cv_error_exit (j_common_ptr cinfo) |
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36 | { |
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37 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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38 | } |
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39 | |
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40 | static void |
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41 | cv_error_output (j_common_ptr cinfo) |
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42 | { |
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43 | return; |
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44 | } |
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45 | |
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46 | static void |
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47 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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48 | unsigned int *h, unsigned int *s, unsigned int *v) |
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49 | { |
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50 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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51 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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52 | unsigned int delta = mx - mn; |
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53 | |
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54 | *v = mx; |
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55 | |
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56 | *s = mx ? delta * 255 / mx : 0; |
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57 | |
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58 | if (delta == 0) |
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59 | *h = 0; |
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60 | else |
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61 | { |
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62 | if (r == mx) |
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63 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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64 | else if (g == mx) |
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65 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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66 | else if (b == mx) |
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67 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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68 | |
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69 | *h &= 255; |
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70 | } |
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71 | } |
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72 | |
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73 | struct feature { |
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74 | float v1, v2, v3; // mean, square, cube |
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75 | int n; |
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76 | }; |
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77 | |
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78 | static void |
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79 | feature_init (struct feature *f) |
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80 | { |
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81 | f->v1 = 0.; |
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82 | f->v2 = 0.; |
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83 | f->v3 = 0.; |
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84 | f->n = 0; |
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85 | } |
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86 | |
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87 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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88 | // elmex ist schuld. |
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89 | static void |
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90 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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91 | { |
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92 | f->v1 += v; |
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93 | f->n += 1; |
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94 | } |
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95 | |
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96 | static void |
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97 | feature_finish_pass_1 (struct feature *f) |
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98 | { |
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99 | if (f->n < 1) |
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100 | return; |
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101 | |
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102 | f->v1 /= f->n; |
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103 | } |
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104 | |
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105 | static void |
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106 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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107 | { |
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108 | float d = v - f->v1; |
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109 | |
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110 | f->v2 += d * d; |
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111 | f->v3 += d * d * d; |
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112 | } |
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113 | |
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114 | static void |
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115 | feature_finish_pass_2 (struct feature *f) |
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116 | { |
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117 | if (f->n < 1) |
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118 | return; |
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119 | |
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120 | f->v2 /= f->n; |
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121 | f->v3 /= f->n; |
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122 | |
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123 | // this is a peculiar weightung, but it works fine |
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124 | f->v1 /= 255.; |
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125 | f->v2 /= 128. * 128.; |
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126 | f->v3 /= 128. * 128. * 64.; |
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127 | } |
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128 | |
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129 | static guint32 a85_val; |
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130 | static guint a85_cnt; |
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131 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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132 | |
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133 | static void |
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134 | a85_init (void) |
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135 | { |
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136 | a85_cnt = 4; |
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137 | a85_ptr = a85_buf; |
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138 | } |
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139 | |
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140 | static void |
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141 | a85_push (PerlIO *fp, guchar c) |
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142 | { |
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143 | a85_val = a85_val << 8 | c; |
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144 | |
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145 | if (!--a85_cnt) |
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146 | { |
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147 | a85_cnt = 4; |
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148 | if (a85_val) |
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149 | { |
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150 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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151 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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152 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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153 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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154 | a85_ptr[0] = (a85_val ) + 33; |
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155 | |
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156 | a85_ptr += 5; |
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157 | } |
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158 | else |
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159 | *a85_ptr++ = 'z'; |
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160 | |
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161 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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162 | { |
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163 | *a85_ptr++ = '\n'; |
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164 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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165 | a85_ptr = a85_buf; |
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166 | } |
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167 | } |
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168 | |
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169 | } |
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170 | |
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171 | static void |
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172 | a85_finish (PerlIO *fp) |
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173 | { |
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174 | while (a85_cnt != 4) |
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175 | a85_push (fp, 0); |
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176 | |
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177 | *a85_ptr++ = '~'; // probably buggy end-marker |
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178 | *a85_ptr++ = '>'; // probably buggy end-marker |
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179 | *a85_ptr++ = '\n'; |
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180 | |
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181 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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182 | } |
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183 | |
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184 | ///////////////////////////////////////////////////////////////////////////// |
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185 | |
10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
186 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
11 | |
187 | |
12 | PROTOTYPES: ENABLE |
188 | PROTOTYPES: ENABLE |
13 | |
189 | |
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190 | # missing function in perl. really :) |
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191 | int |
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192 | common_prefix_length (a, b) |
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193 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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194 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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195 | CODE: |
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196 | RETVAL = 0; |
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197 | |
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198 | while (*a == *b && *a) |
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199 | { |
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200 | RETVAL += (*a & 0xc0) != 0x80; |
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201 | a++, b++; |
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202 | } |
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203 | |
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204 | OUTPUT: |
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205 | RETVAL |
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206 | |
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207 | const char * |
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208 | magic (const char *path) |
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209 | CODE: |
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210 | { |
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211 | static magic_t cookie; |
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212 | |
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213 | if (!cookie) |
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214 | { |
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215 | cookie = magic_open (MAGIC_NONE); |
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216 | |
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217 | if (cookie) |
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218 | magic_load (cookie, 0); |
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219 | else |
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220 | XSRETURN_UNDEF; |
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221 | } |
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222 | |
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223 | RETVAL = magic_file (cookie, path); |
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224 | } |
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225 | OUTPUT: |
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226 | RETVAL |
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227 | |
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228 | const char * |
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229 | magic_mime (const char *path) |
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230 | CODE: |
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231 | { |
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232 | static magic_t cookie; |
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233 | |
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234 | if (!cookie) |
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235 | { |
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236 | cookie = magic_open (MAGIC_MIME); |
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237 | |
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238 | if (cookie) |
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239 | magic_load (cookie, 0); |
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240 | else |
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241 | XSRETURN_UNDEF; |
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242 | } |
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243 | |
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244 | RETVAL = magic_file (cookie, path); |
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245 | } |
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246 | OUTPUT: |
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247 | RETVAL |
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248 | |
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249 | # missing in Gtk2 perl module |
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250 | |
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251 | gboolean |
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252 | gdk_net_wm_supports (GdkAtom property) |
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253 | CODE: |
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254 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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255 | RETVAL = gdk_net_wm_supports (property); |
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256 | #else |
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257 | RETVAL = 0; |
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258 | #endif |
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259 | OUTPUT: |
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260 | RETVAL |
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261 | |
14 | GdkPixbuf * |
262 | GdkPixbuf_noinc * |
15 | transpose (GdkPixbuf *pb) |
263 | dealpha_expose (GdkPixbuf *pb) |
16 | CODE: |
264 | CODE: |
17 | { |
265 | { |
18 | int w = gdk_pixbuf_get_width (pb); |
266 | int w = gdk_pixbuf_get_width (pb); |
19 | int h = gdk_pixbuf_get_height (pb); |
267 | int h = gdk_pixbuf_get_height (pb); |
20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
268 | int bpp = gdk_pixbuf_get_n_channels (pb); |
21 | int x, y, i; |
269 | int x, y, i; |
22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
270 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
271 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
24 | |
272 | |
25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
273 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
26 | |
274 | |
27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
275 | dst = gdk_pixbuf_get_pixels (RETVAL); |
28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
276 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
29 | |
277 | |
30 | for (x = 0; x < w; x++) |
278 | for (x = 0; x < w; x++) |
31 | for (y = 0; y < h; y++) |
279 | for (y = 0; y < h; y++) |
32 | for (i = 0; i < bpp; i++) |
280 | for (i = 0; i < 3; i++) |
33 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
281 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
34 | } |
282 | } |
35 | OUTPUT: |
283 | OUTPUT: |
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284 | RETVAL |
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285 | |
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286 | GdkPixbuf_noinc * |
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287 | rotate (GdkPixbuf *pb, int angle) |
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288 | CODE: |
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289 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
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290 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
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291 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
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292 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
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293 | : angle); |
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294 | OUTPUT: |
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295 | RETVAL |
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296 | |
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297 | GdkPixbuf_noinc * |
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298 | load_jpeg (SV *path, int thumbnail=0) |
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299 | CODE: |
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300 | { |
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301 | struct jpeg_decompress_struct cinfo; |
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302 | struct jpg_err_mgr jerr; |
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303 | guchar *data; |
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304 | int rs; |
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305 | FILE *fp; |
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306 | volatile GdkPixbuf *pb = 0; |
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307 | |
36 | RETVAL |
308 | RETVAL = 0; |
37 | |
309 | |
38 | GdkPixbuf * |
310 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
39 | flop (GdkPixbuf *pb) |
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40 | CODE: |
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41 | { |
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42 | int w = gdk_pixbuf_get_width (pb); |
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43 | int h = gdk_pixbuf_get_height (pb); |
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44 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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45 | int x, y, i; |
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46 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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47 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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48 | |
311 | |
49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
312 | if (!fp) |
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313 | XSRETURN_UNDEF; |
50 | |
314 | |
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315 | cinfo.err = jpeg_std_error (&jerr.err); |
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316 | |
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317 | jerr.err.error_exit = cv_error_exit; |
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318 | jerr.err.output_message = cv_error_output; |
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319 | |
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320 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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321 | { |
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322 | fclose (fp); |
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323 | jpeg_destroy_decompress (&cinfo); |
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324 | |
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325 | if (pb) |
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326 | g_object_unref ((gpointer)pb); |
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327 | |
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328 | XSRETURN_UNDEF; |
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329 | } |
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330 | |
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331 | jpeg_create_decompress (&cinfo); |
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332 | |
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333 | jpeg_stdio_src (&cinfo, fp); |
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334 | jpeg_read_header (&cinfo, TRUE); |
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335 | |
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336 | cinfo.dct_method = JDCT_DEFAULT; |
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337 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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338 | cinfo.do_block_smoothing = FALSE; |
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339 | cinfo.out_color_space = JCS_RGB; |
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340 | cinfo.quantize_colors = FALSE; |
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341 | |
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342 | cinfo.scale_num = 1; |
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343 | cinfo.scale_denom = 1; |
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344 | |
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345 | jpeg_calc_output_dimensions (&cinfo); |
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346 | |
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347 | if (thumbnail) |
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348 | { |
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349 | cinfo.dct_method = JDCT_FASTEST; |
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350 | cinfo.do_fancy_upsampling = FALSE; |
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351 | |
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352 | while (cinfo.scale_denom < 8 |
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353 | && cinfo.output_width >= IW*4 |
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354 | && cinfo.output_height >= IH*4) |
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355 | { |
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356 | cinfo.scale_denom <<= 1; |
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357 | jpeg_calc_output_dimensions (&cinfo); |
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358 | } |
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359 | } |
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360 | |
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361 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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362 | if (!RETVAL) |
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363 | longjmp (jerr.setjmp_buffer, 2); |
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364 | |
51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
365 | data = gdk_pixbuf_get_pixels (RETVAL); |
52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
366 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
53 | |
367 | |
54 | for (x = 0; x < w; x++) |
368 | if (cinfo.output_components != 3) |
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369 | longjmp (jerr.setjmp_buffer, 3); |
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370 | |
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371 | jpeg_start_decompress (&cinfo); |
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372 | |
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373 | while (cinfo.output_scanline < cinfo.output_height) |
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374 | { |
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375 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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376 | JSAMPROW rp[4]; |
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377 | |
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378 | rp [0] = data + cinfo.output_scanline * rs; |
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379 | rp [1] = (guchar *)rp [0] + rs; |
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380 | rp [2] = (guchar *)rp [1] + rs; |
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381 | rp [3] = (guchar *)rp [2] + rs; |
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382 | |
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383 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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384 | } |
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385 | |
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386 | jpeg_finish_decompress (&cinfo); |
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387 | fclose (fp); |
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388 | jpeg_destroy_decompress (&cinfo); |
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389 | } |
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390 | OUTPUT: |
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391 | RETVAL |
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392 | |
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393 | void |
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394 | compare (GdkPixbuf *a, GdkPixbuf *b) |
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395 | PPCODE: |
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396 | { |
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397 | int w = gdk_pixbuf_get_width (a); |
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398 | int h = gdk_pixbuf_get_height (a); |
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399 | int sa = gdk_pixbuf_get_rowstride (a); |
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400 | int sb = gdk_pixbuf_get_rowstride (b); |
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401 | |
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402 | guchar *pa = gdk_pixbuf_get_pixels (a); |
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403 | guchar *pb = gdk_pixbuf_get_pixels (b); |
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404 | |
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405 | int x, y; |
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406 | |
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407 | assert (w == gdk_pixbuf_get_width (b)); |
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408 | assert (h == gdk_pixbuf_get_height (b)); |
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409 | |
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410 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
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411 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
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412 | |
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413 | double diff = 0.; |
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414 | int peak = 0; |
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415 | |
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416 | if (w && h) |
55 | for (y = 0; y < h; y++) |
417 | for (y = 0; y < h; y++) |
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418 | { |
|
|
419 | guchar *pa_ = pa + y * sa; |
|
|
420 | guchar *pb_ = pb + y * sb; |
|
|
421 | |
56 | for (i = 0; i < bpp; i++) |
422 | for (x = 0; x < w; x++) |
57 | dst[(w - x) * bpp + y * dstr + i] = src[x *bpp + y * sstr + i]; |
423 | { |
|
|
424 | int d; |
|
|
425 | |
|
|
426 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
427 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
428 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
429 | } |
|
|
430 | } |
|
|
431 | |
|
|
432 | EXTEND (SP, 2); |
|
|
433 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
434 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
58 | } |
435 | } |
59 | OUTPUT: |
436 | |
60 | RETVAL |
437 | ############################################################################# |
61 | |
438 | |
62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
439 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
63 | |
440 | |
|
|
441 | SV * |
|
|
442 | foldcase (SV *pathsv) |
|
|
443 | PROTOTYPE: $ |
|
|
444 | CODE: |
|
|
445 | { |
|
|
446 | STRLEN plen; |
|
|
447 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
|
|
448 | U8 *pend = path + plen; |
|
|
449 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
450 | |
|
|
451 | while (path < pend) |
|
|
452 | { |
|
|
453 | U8 ch = *path; |
|
|
454 | |
|
|
455 | if (ch >= 'a' && ch <= 'z') |
|
|
456 | *dstp++ = *path++; |
|
|
457 | else if (ch >= '0' && ch <= '9') |
|
|
458 | { |
|
|
459 | STRLEN el, nl = 0; |
|
|
460 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
461 | path++, nl++; |
|
|
462 | |
|
|
463 | for (el = nl; el < 6; el++) |
|
|
464 | *dstp++ = '0'; |
|
|
465 | |
|
|
466 | memcpy (dstp, path - nl, nl); |
|
|
467 | dstp += nl; |
|
|
468 | } |
|
|
469 | else |
|
|
470 | { |
|
|
471 | STRLEN cl; |
|
|
472 | to_utf8_fold (path, dstp, &cl); |
|
|
473 | dstp += cl; |
|
|
474 | path += is_utf8_char (path); |
|
|
475 | } |
|
|
476 | } |
|
|
477 | |
|
|
478 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
479 | } |
|
|
480 | OUTPUT: |
|
|
481 | RETVAL |
|
|
482 | |
64 | GdkPixbuf * |
483 | GdkPixbuf_noinc * |
65 | p7_to_pb (int w, int h, guchar *src) |
484 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
485 | PROTOTYPE: @ |
66 | CODE: |
486 | CODE: |
67 | { |
487 | { |
68 | int x, y; |
488 | int x, y; |
69 | guchar *dst, *d; |
489 | guchar *dst, *d; |
70 | int dstr; |
490 | int dstr; |
|
|
491 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
71 | |
492 | |
72 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
493 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
73 | dst = gdk_pixbuf_get_pixels (RETVAL); |
494 | dst = gdk_pixbuf_get_pixels (RETVAL); |
74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
495 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
75 | |
496 | |
76 | for (y = 0; y < h; y++) |
497 | for (y = 0; y < h; y++) |
77 | for (d = dst + y * dstr, x = 0; x < w; x++) |
498 | for (d = dst + y * dstr, x = 0; x < w; x++) |
78 | { |
499 | { |
79 | *d++ = ((*src >> 5) & 7) * 255 / 7; |
500 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
80 | *d++ = ((*src >> 2) & 7) * 255 / 7; |
501 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
81 | *d++ = ((*src >> 0) & 3) * 255 / 3; |
502 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
82 | |
503 | |
83 | src++; |
504 | src++; |
84 | } |
505 | } |
85 | } |
506 | } |
86 | OUTPUT: |
507 | OUTPUT: |
87 | RETVAL |
508 | RETVAL |
88 | |
509 | |
|
|
510 | ############################################################################# |
89 | |
511 | |
|
|
512 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
90 | |
513 | |
|
|
514 | void |
|
|
515 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
516 | CODE: |
|
|
517 | { |
|
|
518 | int w = gdk_pixbuf_get_width (pb); |
|
|
519 | int h = gdk_pixbuf_get_height (pb); |
|
|
520 | int x, y, i; |
|
|
521 | guchar *dst; |
|
|
522 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
523 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
524 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
525 | |
|
|
526 | a85_init (); |
|
|
527 | |
|
|
528 | for (y = 0; y < h; y++) |
|
|
529 | for (x = 0; x < w; x++) |
|
|
530 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
531 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
532 | |
|
|
533 | a85_finish (fp); |
|
|
534 | } |
|
|
535 | |
|
|
536 | void |
|
|
537 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
538 | CODE: |
|
|
539 | { |
|
|
540 | int w = gdk_pixbuf_get_width (pb); |
|
|
541 | int h = gdk_pixbuf_get_height (pb); |
|
|
542 | int x, y, i; |
|
|
543 | guchar *dst; |
|
|
544 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
545 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
546 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
547 | |
|
|
548 | for (y = 0; y < h; y++) |
|
|
549 | for (x = 0; x < w; x++) |
|
|
550 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
551 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
552 | } |
|
|
553 | |
|
|
554 | ############################################################################# |
|
|
555 | |
|
|
556 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
557 | |
|
|
558 | SV * |
|
|
559 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
560 | CODE: |
|
|
561 | { |
|
|
562 | int w = gdk_pixbuf_get_width (pb); |
|
|
563 | int h = gdk_pixbuf_get_height (pb); |
|
|
564 | int x, y; |
|
|
565 | guchar *dst; |
|
|
566 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
567 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
568 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
569 | |
|
|
570 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
571 | SvPOK_only (RETVAL); |
|
|
572 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
573 | |
|
|
574 | dst = (guchar *)SvPVX (RETVAL); |
|
|
575 | |
|
|
576 | /* some primitive error distribution + random dithering */ |
|
|
577 | |
|
|
578 | for (y = 0; y < h; y++) |
|
|
579 | { |
|
|
580 | guchar *p = src + y * sstr; |
|
|
581 | |
|
|
582 | for (x = 0; x < w; x += 2) |
|
|
583 | { |
|
|
584 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
585 | |
|
|
586 | if (bpp == 3) |
|
|
587 | r = *p++, g = *p++, b = *p++; |
|
|
588 | else if (bpp == 1) |
|
|
589 | r = g = b = *p++; |
|
|
590 | else |
|
|
591 | abort (); |
|
|
592 | |
|
|
593 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
594 | |
|
|
595 | H = (h * 15 / 255) << 4; |
|
|
596 | V1 = v; |
|
|
597 | |
|
|
598 | if (bpp == 3) |
|
|
599 | r = *p++, g = *p++, b = *p++; |
|
|
600 | else if (bpp == 1) |
|
|
601 | r = g = b = *p++; |
|
|
602 | else |
|
|
603 | abort (); |
|
|
604 | |
|
|
605 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
606 | |
|
|
607 | H |= h * 15 / 255; |
|
|
608 | V2 = v; |
|
|
609 | |
|
|
610 | *dst++ = H; |
|
|
611 | *dst++ = V1; |
|
|
612 | *dst++ = V2; |
|
|
613 | } |
|
|
614 | } |
|
|
615 | } |
|
|
616 | OUTPUT: |
|
|
617 | RETVAL |
|
|
618 | |
|
|
619 | SV * |
|
|
620 | hv84_to_av (unsigned char *hv84) |
|
|
621 | CODE: |
|
|
622 | { |
|
|
623 | int i = 72 / 3; |
|
|
624 | AV *av = newAV (); |
|
|
625 | |
|
|
626 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
627 | while (i--) |
|
|
628 | { |
|
|
629 | int h = *hv84++; |
|
|
630 | int v1 = *hv84++; |
|
|
631 | int v2 = *hv84++; |
|
|
632 | |
|
|
633 | av_push (av, newSViv (v1)); |
|
|
634 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
635 | av_push (av, newSViv (v2)); |
|
|
636 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
637 | } |
|
|
638 | } |
|
|
639 | OUTPUT: |
|
|
640 | RETVAL |
|
|
641 | |
|
|
642 | ############################################################################# |
|
|
643 | |
|
|
644 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
645 | |
|
|
646 | SV * |
|
|
647 | extract_features (SV *ar) |
|
|
648 | CODE: |
|
|
649 | { |
|
|
650 | int i; |
|
|
651 | AV *av, *result; |
|
|
652 | |
|
|
653 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
654 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
655 | |
|
|
656 | av = (AV *) SvRV (ar); |
|
|
657 | result = newAV (); |
|
|
658 | |
|
|
659 | for (i = 0; i <= av_len (av); ++i) |
|
|
660 | { |
|
|
661 | SV *sv = *av_fetch (av, i, 1); |
|
|
662 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
663 | |
|
|
664 | SvPOK_on (histsv); |
|
|
665 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
666 | float *hist = (float *)SvPVX (histsv); |
|
|
667 | |
|
|
668 | struct feature f_h, f_s, f_v; |
|
|
669 | feature_init (&f_h); |
|
|
670 | feature_init (&f_s); |
|
|
671 | feature_init (&f_v); |
|
|
672 | |
|
|
673 | { |
|
|
674 | STRLEN len; |
|
|
675 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
676 | while (len >= 3) |
|
|
677 | { |
|
|
678 | unsigned int r, g, b, h, s, v; |
|
|
679 | r = *buf++; g = *buf++; b = *buf++; |
|
|
680 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
681 | |
|
|
682 | feature_update_pass_1 (&f_h, h); |
|
|
683 | feature_update_pass_1 (&f_s, s); |
|
|
684 | feature_update_pass_1 (&f_v, v); |
|
|
685 | |
|
|
686 | len -= 3; |
|
|
687 | } |
|
|
688 | |
|
|
689 | feature_finish_pass_1 (&f_h); |
|
|
690 | feature_finish_pass_1 (&f_s); |
|
|
691 | feature_finish_pass_1 (&f_v); |
|
|
692 | } |
|
|
693 | |
|
|
694 | { |
|
|
695 | STRLEN len; |
|
|
696 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
697 | while (len >= 3) |
|
|
698 | { |
|
|
699 | unsigned int r, g, b, h, s, v; |
|
|
700 | r = *buf++; g = *buf++; b = *buf++; |
|
|
701 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
702 | |
|
|
703 | feature_update_pass_2 (&f_h, h); |
|
|
704 | feature_update_pass_2 (&f_s, s); |
|
|
705 | feature_update_pass_2 (&f_v, v); |
|
|
706 | |
|
|
707 | len -= 3; |
|
|
708 | } |
|
|
709 | |
|
|
710 | feature_finish_pass_2 (&f_h); |
|
|
711 | feature_finish_pass_2 (&f_s); |
|
|
712 | feature_finish_pass_2 (&f_v); |
|
|
713 | } |
|
|
714 | |
|
|
715 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
716 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
717 | hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ; |
|
|
718 | |
|
|
719 | av_push (result, histsv); |
|
|
720 | } |
|
|
721 | |
|
|
722 | RETVAL = newRV_noinc ((SV *)result); |
|
|
723 | } |
|
|
724 | OUTPUT: |
|
|
725 | RETVAL |
|
|
726 | |
|
|
727 | SV * |
|
|
728 | make_histograms (SV *ar) |
|
|
729 | CODE: |
|
|
730 | { |
|
|
731 | int i; |
|
|
732 | AV *av, *result; |
|
|
733 | |
|
|
734 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
735 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
736 | |
|
|
737 | av = (AV *) SvRV (ar); |
|
|
738 | result = newAV (); |
|
|
739 | |
|
|
740 | for (i = 0; i <= av_len (av); ++i) |
|
|
741 | { |
|
|
742 | const int HISTSIZE = 64; |
|
|
743 | |
|
|
744 | int j; |
|
|
745 | SV *sv = *av_fetch (av, i, 1); |
|
|
746 | STRLEN len; |
|
|
747 | char *buf = SvPVbyte (sv, len); |
|
|
748 | |
|
|
749 | int tmphist[HISTSIZE]; |
|
|
750 | float *hist; |
|
|
751 | |
|
|
752 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
753 | SvPOK_on (histsv); |
|
|
754 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
755 | hist = (float *)SvPVX (histsv); |
|
|
756 | |
|
|
757 | Zero (tmphist, sizeof (tmphist), char); |
|
|
758 | |
|
|
759 | for (j = len; j--; ) |
|
|
760 | { |
|
|
761 | unsigned int idx |
|
|
762 | = ((*buf & 0xc0) >> 2) |
|
|
763 | | ((*buf & 0x18) >> 1) |
|
|
764 | | (*buf & 0x03); |
|
|
765 | |
|
|
766 | ++tmphist[idx]; |
|
|
767 | ++buf; |
|
|
768 | } |
|
|
769 | |
|
|
770 | for (j = 0; j < HISTSIZE; ++j) |
|
|
771 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
772 | |
|
|
773 | av_push (result, histsv); |
|
|
774 | } |
|
|
775 | |
|
|
776 | RETVAL = newRV_noinc ((SV *)result); |
|
|
777 | } |
|
|
778 | OUTPUT: |
|
|
779 | RETVAL |
|
|
780 | |
|
|
781 | |