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 | |
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8 | #include <magic.h> |
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9 | |
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10 | #include <jpeglib.h> |
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11 | #include <glib.h> |
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12 | #include <gtk/gtk.h> |
5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
13 | #include <gdk-pixbuf/gdk-pixbuf.h> |
6 | |
14 | |
7 | #include <gperl.h> |
15 | #include <gperl.h> |
8 | #include <gtk2perl.h> |
16 | #include <gtk2perl.h> |
9 | |
17 | |
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18 | #define IW 80 /* MUST match Schnauer.pm! */ |
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19 | #define IH 60 /* MUST match Schnauer.pm! */ |
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20 | |
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21 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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22 | |
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23 | #define LINELENGTH 240 |
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24 | |
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25 | #define ELLIPSIS "\xe2\x80\xa6" |
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26 | |
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27 | struct jpg_err_mgr |
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28 | { |
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29 | struct jpeg_error_mgr err; |
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30 | jmp_buf setjmp_buffer; |
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31 | }; |
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32 | |
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33 | static void |
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34 | cv_error_exit (j_common_ptr cinfo) |
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35 | { |
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36 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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37 | } |
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38 | |
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39 | static void |
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40 | cv_error_output (j_common_ptr cinfo) |
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41 | { |
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42 | return; |
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43 | } |
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44 | |
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45 | static void |
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46 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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47 | unsigned int *h, unsigned int *s, unsigned int *v) |
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48 | { |
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49 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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50 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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51 | unsigned int delta = mx - mn; |
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52 | |
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53 | *v = mx; |
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54 | |
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55 | *s = mx ? delta * 255 / mx : 0; |
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56 | |
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57 | if (delta == 0) |
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58 | *h = 0; |
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59 | else |
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60 | { |
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61 | if (r == mx) |
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62 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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63 | else if (g == mx) |
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64 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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65 | else if (b == mx) |
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66 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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67 | |
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68 | *h &= 255; |
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69 | } |
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70 | } |
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71 | |
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72 | static guint32 a85_val; |
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73 | static guint a85_cnt; |
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74 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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75 | |
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76 | static void |
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77 | a85_init (void) |
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78 | { |
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79 | a85_cnt = 4; |
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80 | a85_ptr = a85_buf; |
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81 | } |
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82 | |
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83 | static void |
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84 | a85_push (PerlIO *fp, guchar c) |
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85 | { |
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86 | a85_val = a85_val << 8 | c; |
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87 | |
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88 | if (!--a85_cnt) |
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89 | { |
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90 | a85_cnt = 4; |
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91 | if (a85_val) |
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92 | { |
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93 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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94 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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95 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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96 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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97 | a85_ptr[0] = (a85_val ) + 33; |
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98 | |
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99 | a85_ptr += 5; |
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100 | } |
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101 | else |
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102 | *a85_ptr++ = 'z'; |
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103 | |
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104 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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105 | { |
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106 | *a85_ptr++ = '\n'; |
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107 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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108 | a85_ptr = a85_buf; |
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109 | } |
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110 | } |
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111 | |
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112 | } |
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113 | |
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114 | static void |
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115 | a85_finish (PerlIO *fp) |
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116 | { |
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117 | while (a85_cnt != 4) |
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118 | a85_push (fp, 0); |
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119 | |
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120 | *a85_ptr++ = '~'; // probably buggy end-marker |
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121 | *a85_ptr++ = '>'; // probably buggy end-marker |
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122 | *a85_ptr++ = '\n'; |
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123 | |
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124 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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125 | } |
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126 | |
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127 | ///////////////////////////////////////////////////////////////////////////// |
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128 | |
10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
129 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
11 | |
130 | |
12 | PROTOTYPES: ENABLE |
131 | PROTOTYPES: ENABLE |
13 | |
132 | |
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133 | # missing function in perl. really :) |
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134 | int |
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135 | common_prefix_length (a, b) |
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136 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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137 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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138 | CODE: |
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139 | RETVAL = 0; |
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140 | |
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141 | while (*a == *b && *a) |
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142 | { |
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143 | RETVAL += (*a & 0xc0) != 0x80; |
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144 | a++, b++; |
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145 | } |
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146 | |
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147 | OUTPUT: |
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148 | RETVAL |
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149 | |
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150 | const char * |
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151 | magic (const char *path) |
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152 | CODE: |
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153 | { |
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154 | static magic_t cookie; |
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155 | |
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156 | if (!cookie) |
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157 | { |
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158 | cookie = magic_open (MAGIC_NONE); |
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159 | |
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160 | if (cookie) |
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161 | magic_load (cookie, 0); |
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162 | else |
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163 | XSRETURN_UNDEF; |
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164 | } |
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165 | |
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166 | RETVAL = magic_file (cookie, path); |
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167 | } |
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168 | OUTPUT: |
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169 | RETVAL |
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170 | |
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171 | const char * |
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172 | magic_mime (const char *path) |
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173 | CODE: |
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174 | { |
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175 | static magic_t cookie; |
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176 | |
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177 | if (!cookie) |
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178 | { |
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179 | cookie = magic_open (MAGIC_MIME); |
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180 | |
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181 | if (cookie) |
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182 | magic_load (cookie, 0); |
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183 | else |
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184 | XSRETURN_UNDEF; |
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185 | } |
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186 | |
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187 | RETVAL = magic_file (cookie, path); |
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188 | } |
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189 | OUTPUT: |
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190 | RETVAL |
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191 | |
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192 | # missing in Gtk2 perl module |
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193 | |
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194 | gboolean |
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195 | gdk_net_wm_supports (GdkAtom property) |
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196 | CODE: |
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197 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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198 | RETVAL = gdk_net_wm_supports (property); |
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199 | #else |
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200 | RETVAL = 0; |
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201 | #endif |
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202 | OUTPUT: |
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203 | RETVAL |
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204 | |
14 | GdkPixbuf * |
205 | GdkPixbuf_noinc * |
15 | transpose (GdkPixbuf *pb) |
206 | dealpha_expose (GdkPixbuf *pb) |
16 | CODE: |
207 | CODE: |
17 | { |
208 | { |
18 | int w = gdk_pixbuf_get_width (pb); |
209 | int w = gdk_pixbuf_get_width (pb); |
19 | int h = gdk_pixbuf_get_height (pb); |
210 | int h = gdk_pixbuf_get_height (pb); |
20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
211 | int bpp = gdk_pixbuf_get_n_channels (pb); |
21 | int x, y, i; |
212 | int x, y, i; |
22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
213 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
214 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
24 | |
215 | |
25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
216 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
26 | |
217 | |
27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
218 | dst = gdk_pixbuf_get_pixels (RETVAL); |
28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
219 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
29 | |
220 | |
30 | for (x = 0; x < w; x++) |
221 | for (x = 0; x < w; x++) |
31 | for (y = 0; y < h; y++) |
222 | for (y = 0; y < h; y++) |
32 | for (i = 0; i < bpp; i++) |
223 | for (i = 0; i < 3; i++) |
33 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
224 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
34 | } |
225 | } |
35 | OUTPUT: |
226 | OUTPUT: |
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227 | RETVAL |
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228 | |
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229 | GdkPixbuf_noinc * |
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230 | rotate (GdkPixbuf *pb, int angle) |
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231 | CODE: |
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232 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
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233 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
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234 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
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235 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
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236 | : angle); |
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237 | OUTPUT: |
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238 | RETVAL |
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239 | |
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240 | GdkPixbuf_noinc * |
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241 | load_jpeg (SV *path, int thumbnail=0) |
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242 | CODE: |
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243 | { |
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244 | struct jpeg_decompress_struct cinfo; |
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245 | struct jpg_err_mgr jerr; |
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246 | guchar *data; |
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247 | int rs; |
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248 | FILE *fp; |
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249 | volatile GdkPixbuf *pb = 0; |
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250 | |
36 | RETVAL |
251 | RETVAL = 0; |
37 | |
252 | |
38 | GdkPixbuf * |
253 | 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 | |
254 | |
49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
255 | if (!fp) |
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256 | XSRETURN_UNDEF; |
50 | |
257 | |
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258 | cinfo.err = jpeg_std_error (&jerr.err); |
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259 | |
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260 | jerr.err.error_exit = cv_error_exit; |
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261 | jerr.err.output_message = cv_error_output; |
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262 | |
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263 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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264 | { |
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265 | fclose (fp); |
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266 | jpeg_destroy_decompress (&cinfo); |
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267 | |
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268 | if (pb) |
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269 | g_object_unref ((gpointer)pb); |
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270 | |
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271 | XSRETURN_UNDEF; |
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272 | } |
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273 | |
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274 | jpeg_create_decompress (&cinfo); |
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275 | |
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276 | jpeg_stdio_src (&cinfo, fp); |
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277 | jpeg_read_header (&cinfo, TRUE); |
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278 | |
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279 | cinfo.dct_method = JDCT_DEFAULT; |
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280 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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281 | cinfo.do_block_smoothing = FALSE; |
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282 | cinfo.out_color_space = JCS_RGB; |
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283 | cinfo.quantize_colors = FALSE; |
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284 | |
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285 | cinfo.scale_num = 1; |
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286 | cinfo.scale_denom = 1; |
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287 | |
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288 | jpeg_calc_output_dimensions (&cinfo); |
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289 | |
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290 | if (thumbnail) |
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291 | { |
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292 | cinfo.dct_method = JDCT_FASTEST; |
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293 | cinfo.do_fancy_upsampling = FALSE; |
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294 | |
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295 | while (cinfo.scale_denom < 8 |
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296 | && cinfo.output_width >= IW*4 |
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297 | && cinfo.output_height >= IH*4) |
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298 | { |
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299 | cinfo.scale_denom <<= 1; |
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300 | jpeg_calc_output_dimensions (&cinfo); |
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301 | } |
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302 | } |
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303 | |
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304 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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305 | if (!RETVAL) |
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306 | longjmp (jerr.setjmp_buffer, 2); |
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307 | |
51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
308 | data = gdk_pixbuf_get_pixels (RETVAL); |
52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
309 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
53 | |
310 | |
54 | for (x = 0; x < w; x++) |
311 | if (cinfo.output_components != 3) |
55 | for (y = 0; y < h; y++) |
312 | longjmp (jerr.setjmp_buffer, 3); |
56 | for (i = 0; i < bpp; i++) |
313 | |
57 | dst[(w - x) * bpp + y * dstr + i] = src[x *bpp + y * sstr + i]; |
314 | jpeg_start_decompress (&cinfo); |
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315 | |
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316 | while (cinfo.output_scanline < cinfo.output_height) |
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317 | { |
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318 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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319 | JSAMPROW rp[4]; |
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320 | |
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321 | rp [0] = data + cinfo.output_scanline * rs; |
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322 | rp [1] = (guchar *)rp [0] + rs; |
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323 | rp [2] = (guchar *)rp [1] + rs; |
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324 | rp [3] = (guchar *)rp [2] + rs; |
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325 | |
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326 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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327 | } |
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328 | |
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329 | jpeg_finish_decompress (&cinfo); |
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330 | fclose (fp); |
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331 | jpeg_destroy_decompress (&cinfo); |
58 | } |
332 | } |
59 | OUTPUT: |
333 | OUTPUT: |
60 | RETVAL |
334 | RETVAL |
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335 | |
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336 | ############################################################################# |
61 | |
337 | |
62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
338 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
63 | |
339 | |
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340 | SV * |
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341 | foldcase (SV *pathsv) |
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342 | PROTOTYPE: $ |
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343 | CODE: |
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344 | { |
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345 | STRLEN plen; |
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346 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
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347 | U8 *pend = path + plen; |
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348 | U8 dst [plen * 6 * 3], *dstp = dst; |
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349 | |
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350 | while (path < pend) |
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351 | { |
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352 | U8 ch = *path; |
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353 | |
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354 | if (ch >= 'a' && ch <= 'z') |
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355 | *dstp++ = *path++; |
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356 | else if (ch >= '0' && ch <= '9') |
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357 | { |
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358 | STRLEN el, nl = 0; |
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359 | while (*path >= '0' && *path <= '9' && path < pend) |
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360 | path++, nl++; |
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361 | |
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362 | for (el = nl; el < 6; el++) |
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363 | *dstp++ = '0'; |
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364 | |
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365 | memcpy (dstp, path - nl, nl); |
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366 | dstp += nl; |
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367 | } |
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368 | else |
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369 | { |
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370 | STRLEN cl; |
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371 | to_utf8_fold (path, dstp, &cl); |
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372 | dstp += cl; |
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373 | path += is_utf8_char (path); |
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374 | } |
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375 | } |
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376 | |
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377 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
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378 | } |
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379 | OUTPUT: |
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380 | RETVAL |
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381 | |
64 | GdkPixbuf * |
382 | GdkPixbuf_noinc * |
65 | p7_to_pb (int w, int h, guchar *src) |
383 | p7_to_pb (int w, int h, SV *src_sv) |
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384 | PROTOTYPE: @ |
66 | CODE: |
385 | CODE: |
67 | { |
386 | { |
68 | int x, y; |
387 | int x, y; |
69 | guchar *dst, *d; |
388 | guchar *dst, *d; |
70 | int dstr; |
389 | int dstr; |
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390 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
71 | |
391 | |
72 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
392 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
73 | dst = gdk_pixbuf_get_pixels (RETVAL); |
393 | dst = gdk_pixbuf_get_pixels (RETVAL); |
74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
394 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
75 | |
395 | |
76 | for (y = 0; y < h; y++) |
396 | for (y = 0; y < h; y++) |
77 | for (d = dst + y * dstr, x = 0; x < w; x++) |
397 | for (d = dst + y * dstr, x = 0; x < w; x++) |
78 | { |
398 | { |
79 | *d++ = ((*src >> 5) & 7) * 255 / 7; |
399 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
80 | *d++ = ((*src >> 2) & 7) * 255 / 7; |
400 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
81 | *d++ = ((*src >> 0) & 3) * 255 / 3; |
401 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
82 | |
402 | |
83 | src++; |
403 | src++; |
84 | } |
404 | } |
85 | } |
405 | } |
86 | OUTPUT: |
406 | OUTPUT: |
87 | RETVAL |
407 | RETVAL |
88 | |
408 | |
|
|
409 | ############################################################################# |
89 | |
410 | |
|
|
411 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
90 | |
412 | |
|
|
413 | void |
|
|
414 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
415 | CODE: |
|
|
416 | { |
|
|
417 | int w = gdk_pixbuf_get_width (pb); |
|
|
418 | int h = gdk_pixbuf_get_height (pb); |
|
|
419 | int x, y, i; |
|
|
420 | guchar *dst; |
|
|
421 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
422 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
423 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
424 | |
|
|
425 | a85_init (); |
|
|
426 | |
|
|
427 | for (y = 0; y < h; y++) |
|
|
428 | for (x = 0; x < w; x++) |
|
|
429 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
430 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
431 | |
|
|
432 | a85_finish (fp); |
|
|
433 | } |
|
|
434 | |
|
|
435 | void |
|
|
436 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
437 | CODE: |
|
|
438 | { |
|
|
439 | int w = gdk_pixbuf_get_width (pb); |
|
|
440 | int h = gdk_pixbuf_get_height (pb); |
|
|
441 | int x, y, i; |
|
|
442 | guchar *dst; |
|
|
443 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
444 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
445 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
446 | |
|
|
447 | for (y = 0; y < h; y++) |
|
|
448 | for (x = 0; x < w; x++) |
|
|
449 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
450 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
451 | } |
|
|
452 | |
|
|
453 | ############################################################################# |
|
|
454 | |
|
|
455 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
456 | |
|
|
457 | SV * |
|
|
458 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
459 | CODE: |
|
|
460 | { |
|
|
461 | int w = gdk_pixbuf_get_width (pb); |
|
|
462 | int h = gdk_pixbuf_get_height (pb); |
|
|
463 | int x, y; |
|
|
464 | guchar *dst; |
|
|
465 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
466 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
467 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
468 | |
|
|
469 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
470 | SvPOK_only (RETVAL); |
|
|
471 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
472 | |
|
|
473 | dst = (guchar *)SvPVX (RETVAL); |
|
|
474 | |
|
|
475 | /* some primitive error distribution + random dithering */ |
|
|
476 | |
|
|
477 | for (y = 0; y < h; y++) |
|
|
478 | { |
|
|
479 | guchar *p = src + y * sstr; |
|
|
480 | |
|
|
481 | for (x = 0; x < w; x += 2) |
|
|
482 | { |
|
|
483 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
484 | |
|
|
485 | if (bpp == 3) |
|
|
486 | r = *p++, g = *p++, b = *p++; |
|
|
487 | else if (bpp == 1) |
|
|
488 | r = g = b = *p++; |
|
|
489 | else |
|
|
490 | abort (); |
|
|
491 | |
|
|
492 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
493 | |
|
|
494 | H = (h * 15 / 255) << 4; |
|
|
495 | V1 = v; |
|
|
496 | |
|
|
497 | if (bpp == 3) |
|
|
498 | r = *p++, g = *p++, b = *p++; |
|
|
499 | else if (bpp == 1) |
|
|
500 | r = g = b = *p++; |
|
|
501 | else |
|
|
502 | abort (); |
|
|
503 | |
|
|
504 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
505 | |
|
|
506 | H |= h * 15 / 255; |
|
|
507 | V2 = v; |
|
|
508 | |
|
|
509 | *dst++ = H; |
|
|
510 | *dst++ = V1; |
|
|
511 | *dst++ = V2; |
|
|
512 | } |
|
|
513 | } |
|
|
514 | } |
|
|
515 | OUTPUT: |
|
|
516 | RETVAL |
|
|
517 | |
|
|
518 | SV * |
|
|
519 | hv84_to_av (unsigned char *hv84) |
|
|
520 | CODE: |
|
|
521 | { |
|
|
522 | int i = 72 / 3; |
|
|
523 | AV *av = newAV (); |
|
|
524 | |
|
|
525 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
526 | while (i--) |
|
|
527 | { |
|
|
528 | int h = *hv84++; |
|
|
529 | int v1 = *hv84++; |
|
|
530 | int v2 = *hv84++; |
|
|
531 | |
|
|
532 | av_push (av, newSViv (v1)); |
|
|
533 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
534 | av_push (av, newSViv (v2)); |
|
|
535 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
536 | } |
|
|
537 | } |
|
|
538 | OUTPUT: |
|
|
539 | RETVAL |
|
|
540 | |
|
|
541 | ############################################################################# |
|
|
542 | |
|
|
543 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
544 | |
|
|
545 | SV * |
|
|
546 | make_histograms (SV *ar) |
|
|
547 | CODE: |
|
|
548 | { |
|
|
549 | int i; |
|
|
550 | AV *av, *result; |
|
|
551 | |
|
|
552 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
553 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
554 | |
|
|
555 | av = (AV *) SvRV (ar); |
|
|
556 | result = newAV (); |
|
|
557 | |
|
|
558 | for (i = 0; i <= av_len (av); ++i) |
|
|
559 | { |
|
|
560 | const int HISTSIZE = 64; |
|
|
561 | |
|
|
562 | int j; |
|
|
563 | SV *sv = *av_fetch (av, i, 1); |
|
|
564 | STRLEN len; |
|
|
565 | char *buf = SvPVbyte (sv, len); |
|
|
566 | |
|
|
567 | int tmphist[HISTSIZE]; |
|
|
568 | float *hist; |
|
|
569 | |
|
|
570 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
571 | SvPOK_on (histsv); |
|
|
572 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
573 | hist = (float *)SvPVX (histsv); |
|
|
574 | |
|
|
575 | Zero (tmphist, sizeof (tmphist), char); |
|
|
576 | |
|
|
577 | for (j = len; j--; ) |
|
|
578 | { |
|
|
579 | unsigned int idx |
|
|
580 | = ((*buf & 0xc0) >> 2) |
|
|
581 | | ((*buf & 0x18) >> 1) |
|
|
582 | | (*buf & 0x03); |
|
|
583 | |
|
|
584 | ++tmphist[idx]; |
|
|
585 | ++buf; |
|
|
586 | } |
|
|
587 | |
|
|
588 | for (j = 0; j < HISTSIZE; ++j) |
|
|
589 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
590 | |
|
|
591 | av_push (result, histsv); |
|
|
592 | } |
|
|
593 | |
|
|
594 | RETVAL = newRV_noinc ((SV *)result); |
|
|
595 | } |
|
|
596 | OUTPUT: |
|
|
597 | RETVAL |
|
|
598 | |
|
|
599 | |