| 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 | |
|
|
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> |
|
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14 | #include <gdk/gdkx.h> |
| 5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
15 | #include <gdk-pixbuf/gdk-pixbuf.h> |
| 6 | |
16 | |
| 7 | #include <gperl.h> |
17 | #include <gperl.h> |
| 8 | #include <gtk2perl.h> |
18 | #include <gtk2perl.h> |
| 9 | |
19 | |
|
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20 | #include <assert.h> |
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21 | |
|
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22 | #if WEBP |
|
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23 | #include <webp/decode.h> |
|
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24 | #endif |
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25 | |
|
|
26 | #include "perlmulticore.h" |
|
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27 | |
|
|
28 | #define IW 80 /* MUST match Schnauzer.pm! */ |
|
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29 | #define IH 60 /* MUST match Schnauzer.pm! */ |
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30 | |
|
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31 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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32 | |
|
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33 | #define LINELENGTH 240 |
|
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34 | |
|
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35 | #define ELLIPSIS "\xe2\x80\xa6" |
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36 | |
|
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37 | typedef char *octet_string; |
|
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38 | |
|
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39 | static magic_t magic_cookie[2]; /* !mime, mime */ |
|
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40 | |
|
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41 | struct jpg_err_mgr |
|
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42 | { |
|
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43 | struct jpeg_error_mgr err; |
|
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44 | jmp_buf setjmp_buffer; |
|
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45 | }; |
|
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46 | |
|
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47 | static void |
|
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48 | cv_error_exit (j_common_ptr cinfo) |
|
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49 | { |
|
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50 | cinfo->err->output_message (cinfo); |
|
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51 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
|
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52 | } |
|
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53 | |
|
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54 | static void |
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55 | cv_error_output (j_common_ptr cinfo) |
|
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56 | { |
|
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57 | char msg[JMSG_LENGTH_MAX]; |
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58 | |
|
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59 | cinfo->err->format_message (cinfo, msg); |
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60 | |
|
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61 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
|
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62 | return; |
|
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63 | } |
|
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64 | |
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65 | static void |
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66 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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67 | unsigned int *h, unsigned int *s, unsigned int *v) |
|
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68 | { |
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69 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
|
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70 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
|
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71 | unsigned int delta = mx - mn; |
|
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72 | |
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73 | *v = mx; |
|
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74 | |
|
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75 | *s = mx ? delta * 255 / mx : 0; |
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76 | |
|
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77 | if (delta == 0) |
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78 | *h = 0; |
|
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79 | else |
|
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80 | { |
|
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81 | if (r == mx) |
|
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82 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
|
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83 | else if (g == mx) |
|
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84 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
|
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85 | else if (b == mx) |
|
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86 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
|
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87 | |
|
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88 | *h &= 255; |
|
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89 | } |
|
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90 | } |
|
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91 | |
|
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92 | struct feature { |
|
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93 | float v1, v2, v3; // mean, square, cube |
|
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94 | int n; |
|
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95 | }; |
|
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96 | |
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97 | static void |
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98 | feature_init (struct feature *f) |
|
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99 | { |
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100 | f->v1 = 0.; |
|
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101 | f->v2 = 0.; |
|
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102 | f->v3 = 0.; |
|
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103 | f->n = 0; |
|
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104 | } |
|
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105 | |
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106 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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107 | // elmex ist schuld. |
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108 | static void |
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109 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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110 | { |
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111 | f->v1 += v; |
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112 | f->n += 1; |
|
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113 | } |
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114 | |
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115 | static void |
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116 | feature_finish_pass_1 (struct feature *f) |
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117 | { |
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118 | if (f->n < 1) |
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119 | return; |
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120 | |
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121 | f->v1 /= f->n; |
|
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122 | } |
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123 | |
|
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124 | static void |
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125 | feature_update_pass_2 (struct feature *f, unsigned int v) |
|
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126 | { |
|
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127 | float d = v - f->v1; |
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128 | |
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129 | f->v2 += d * d; |
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130 | f->v3 += d * d * d; |
|
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131 | } |
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132 | |
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133 | static void |
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134 | feature_finish_pass_2 (struct feature *f) |
|
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135 | { |
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136 | if (f->n < 1) |
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137 | return; |
|
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138 | |
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139 | f->v2 /= f->n; |
|
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140 | f->v3 /= f->n; |
|
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141 | |
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142 | f->v1 /= 255.; |
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143 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
|
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144 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
|
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145 | } |
|
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146 | |
|
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147 | static guint32 a85_val; |
|
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148 | static guint a85_cnt; |
|
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149 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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150 | |
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151 | static void |
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152 | a85_init (void) |
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153 | { |
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154 | a85_cnt = 4; |
|
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155 | a85_ptr = a85_buf; |
|
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156 | } |
|
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157 | |
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158 | static void |
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159 | a85_push (PerlIO *fp, guchar c) |
|
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160 | { |
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161 | a85_val = a85_val << 8 | c; |
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162 | |
|
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163 | if (!--a85_cnt) |
|
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164 | { |
|
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165 | a85_cnt = 4; |
|
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166 | if (a85_val) |
|
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167 | { |
|
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168 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
|
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169 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
|
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170 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
|
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171 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
|
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172 | a85_ptr[0] = (a85_val ) + 33; |
|
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173 | |
|
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174 | a85_ptr += 5; |
|
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175 | } |
|
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176 | else |
|
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177 | *a85_ptr++ = 'z'; |
|
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178 | |
|
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179 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
|
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180 | { |
|
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181 | *a85_ptr++ = '\n'; |
|
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182 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
|
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183 | a85_ptr = a85_buf; |
|
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184 | } |
|
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185 | } |
|
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186 | |
|
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187 | } |
|
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188 | |
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189 | static void |
|
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190 | a85_finish (PerlIO *fp) |
|
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191 | { |
|
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192 | while (a85_cnt != 4) |
|
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193 | a85_push (fp, 0); |
|
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194 | |
|
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195 | *a85_ptr++ = '~'; // probably buggy end-marker |
|
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196 | *a85_ptr++ = '>'; // probably buggy end-marker |
|
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197 | *a85_ptr++ = '\n'; |
|
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198 | |
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199 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
|
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200 | } |
|
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201 | |
|
|
202 | ///////////////////////////////////////////////////////////////////////////// |
|
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203 | |
| 10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
204 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
| 11 | |
205 | |
| 12 | PROTOTYPES: ENABLE |
206 | PROTOTYPES: ENABLE |
| 13 | |
207 | |
|
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208 | # missing function in perl. really :) |
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209 | int |
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210 | common_prefix_length (a, b) |
|
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211 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
|
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212 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
|
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213 | CODE: |
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214 | RETVAL = 0; |
|
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215 | |
|
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216 | while (*a == *b && *a) |
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217 | { |
|
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218 | RETVAL += (*a & 0xc0) != 0x80; |
|
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219 | a++, b++; |
|
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220 | } |
|
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221 | |
|
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222 | OUTPUT: |
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223 | RETVAL |
|
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224 | |
|
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225 | const char * |
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226 | magic (SV *path_or_data) |
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227 | ALIAS: |
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228 | magic = 0 |
|
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229 | magic_mime = 1 |
|
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230 | magic_buffer = 2 |
|
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231 | magic_buffer_mime = 3 |
|
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232 | CODE: |
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233 | { |
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234 | STRLEN len; |
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235 | char *data = SvPVbyte (path_or_data, len); |
|
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236 | |
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237 | if (!magic_cookie[0]) |
|
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238 | { |
|
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239 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
|
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240 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
|
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241 | magic_load (magic_cookie[0], 0); |
|
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242 | magic_load (magic_cookie[1], 0); |
|
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243 | } |
|
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244 | |
|
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245 | perlinterp_release (); |
|
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246 | |
|
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247 | RETVAL = ix & 2 |
|
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248 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
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249 | : magic_file (magic_cookie[ix & 1], data); |
|
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250 | |
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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 |
|
|
273 | |
| 14 | GdkPixbuf_noinc * |
274 | GdkPixbuf_noinc * |
| 15 | transpose (GdkPixbuf *pb) |
275 | dealpha_expose (GdkPixbuf *pb) |
| 16 | CODE: |
276 | CODE: |
|
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277 | perlinterp_release (); |
| 17 | { |
278 | { |
| 18 | int w = gdk_pixbuf_get_width (pb); |
279 | int w = gdk_pixbuf_get_width (pb); |
| 19 | int h = gdk_pixbuf_get_height (pb); |
280 | int h = gdk_pixbuf_get_height (pb); |
| 20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
281 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 21 | int x, y, i; |
282 | int x, y, i; |
| 22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
283 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
| 23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
284 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 24 | |
285 | |
| 25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
286 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 26 | |
287 | |
| 27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
288 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
289 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 29 | |
290 | |
| 30 | for (y = 0; y < h; y++) |
|
|
| 31 | for (x = 0; x < w; x++) |
291 | for (x = 0; x < w; x++) |
|
|
292 | for (y = 0; y < h; y++) |
| 32 | for (i = 0; i < bpp; i++) |
293 | for (i = 0; i < 3; i++) |
| 33 | 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]; |
| 34 | } |
295 | } |
|
|
296 | perlinterp_acquire (); |
| 35 | OUTPUT: |
297 | OUTPUT: |
| 36 | RETVAL |
298 | RETVAL |
| 37 | |
299 | |
| 38 | GdkPixbuf_noinc * |
300 | GdkPixbuf_noinc * |
| 39 | flop (GdkPixbuf *pb) |
301 | rotate (GdkPixbuf *pb, int angle) |
| 40 | CODE: |
302 | CODE: |
| 41 | { |
303 | perlinterp_release (); |
| 42 | int w = gdk_pixbuf_get_width (pb); |
304 | if (angle < 0) |
| 43 | int h = gdk_pixbuf_get_height (pb); |
305 | angle += 360; |
| 44 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
306 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
| 45 | int x, y, i; |
307 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
| 46 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
308 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
| 47 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
309 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
| 48 | |
310 | : angle); |
| 49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
311 | perlinterp_acquire (); |
| 50 | |
|
|
| 51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
|
|
| 52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
| 53 | |
|
|
| 54 | for (y = 0; y < h; y++) |
|
|
| 55 | for (x = 0; x < w; x++) |
|
|
| 56 | for (i = 0; i < bpp; i++) |
|
|
| 57 | dst[(w - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
|
|
| 58 | } |
|
|
| 59 | OUTPUT: |
312 | OUTPUT: |
| 60 | RETVAL |
313 | RETVAL |
| 61 | |
314 | |
|
|
315 | GdkPixbuf_noinc * |
|
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316 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
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317 | CODE: |
|
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318 | { |
|
|
319 | #if WEBP |
|
|
320 | guchar *data; |
|
|
321 | STRLEN data_size; |
|
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322 | int alpha; |
|
|
323 | WebPDecoderConfig config; |
|
|
324 | int inw, inh; |
|
|
325 | |
|
|
326 | data = SvPVbyte (image_data, data_size); |
|
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327 | |
|
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328 | perlinterp_release (); |
|
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329 | |
|
|
330 | RETVAL = 0; |
|
|
331 | |
|
|
332 | if (!WebPInitDecoderConfig (&config)) |
|
|
333 | goto err; |
|
|
334 | |
|
|
335 | config.options.use_threads = 1; |
|
|
336 | |
|
|
337 | if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK) |
|
|
338 | goto err; |
|
|
339 | |
|
|
340 | inw = config.input.width; |
|
|
341 | inh = config.input.height; |
|
|
342 | |
|
|
343 | if (thumbnail) |
|
|
344 | { |
|
|
345 | if (inw * ih > inh * iw) |
|
|
346 | ih = (iw * inh + inw - 1) / inw; |
|
|
347 | else |
|
|
348 | iw = (ih * inw + inh - 1) / inh; |
|
|
349 | |
|
|
350 | config.options.bypass_filtering = 1; |
|
|
351 | config.options.no_fancy_upsampling = 1; |
|
|
352 | |
|
|
353 | config.options.use_scaling = 1; |
|
|
354 | config.options.scaled_width = iw; |
|
|
355 | config.options.scaled_height = ih; |
|
|
356 | } |
|
|
357 | else |
|
|
358 | { |
|
|
359 | iw = inw; |
|
|
360 | ih = inh; |
|
|
361 | } |
|
|
362 | |
|
|
363 | alpha = config.input.has_alpha; |
|
|
364 | |
|
|
365 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih); |
|
|
366 | if (!RETVAL) |
|
|
367 | goto err; |
|
|
368 | |
|
|
369 | config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
|
|
370 | config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
|
|
371 | config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
372 | config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
|
|
373 | config.output.is_external_memory = 1; |
|
|
374 | |
|
|
375 | if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK) |
|
|
376 | { |
|
|
377 | g_object_unref (RETVAL); |
|
|
378 | RETVAL = 0; |
|
|
379 | goto err; |
|
|
380 | } |
|
|
381 | |
|
|
382 | err: |
|
|
383 | perlinterp_acquire (); |
|
|
384 | #else |
|
|
385 | croak ("load_webp: webp not enabled at compile time"); |
|
|
386 | #endif |
|
|
387 | } |
|
|
388 | OUTPUT: |
|
|
389 | RETVAL |
|
|
390 | |
|
|
391 | GdkPixbuf_noinc * |
|
|
392 | load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
393 | CODE: |
|
|
394 | { |
|
|
395 | struct jpeg_decompress_struct cinfo; |
|
|
396 | struct jpg_err_mgr jerr; |
|
|
397 | guchar *data; |
|
|
398 | int rs; |
|
|
399 | FILE *fp; |
|
|
400 | volatile GdkPixbuf *pb = 0; |
|
|
401 | |
|
|
402 | RETVAL = 0; |
|
|
403 | |
|
|
404 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
|
|
405 | |
|
|
406 | if (!fp) |
|
|
407 | XSRETURN_UNDEF; |
|
|
408 | |
|
|
409 | perlinterp_release (); |
|
|
410 | |
|
|
411 | cinfo.err = jpeg_std_error (&jerr.err); |
|
|
412 | |
|
|
413 | jerr.err.error_exit = cv_error_exit; |
|
|
414 | jerr.err.output_message = cv_error_output; |
|
|
415 | |
|
|
416 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
|
417 | { |
|
|
418 | fclose (fp); |
|
|
419 | jpeg_destroy_decompress (&cinfo); |
|
|
420 | |
|
|
421 | if (pb) |
|
|
422 | g_object_unref ((gpointer)pb); |
|
|
423 | |
|
|
424 | perlinterp_acquire (); |
|
|
425 | XSRETURN_UNDEF; |
|
|
426 | } |
|
|
427 | |
|
|
428 | jpeg_create_decompress (&cinfo); |
|
|
429 | |
|
|
430 | jpeg_stdio_src (&cinfo, fp); |
|
|
431 | jpeg_read_header (&cinfo, TRUE); |
|
|
432 | |
|
|
433 | cinfo.dct_method = JDCT_DEFAULT; |
|
|
434 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
|
435 | cinfo.do_block_smoothing = FALSE; |
|
|
436 | cinfo.out_color_space = JCS_RGB; |
|
|
437 | cinfo.quantize_colors = FALSE; |
|
|
438 | |
|
|
439 | cinfo.scale_num = 1; |
|
|
440 | cinfo.scale_denom = 1; |
|
|
441 | |
|
|
442 | jpeg_calc_output_dimensions (&cinfo); |
|
|
443 | |
|
|
444 | if (thumbnail) |
|
|
445 | { |
|
|
446 | cinfo.dct_method = JDCT_FASTEST; |
|
|
447 | cinfo.do_fancy_upsampling = FALSE; |
|
|
448 | |
|
|
449 | while (cinfo.scale_denom < 8 |
|
|
450 | && cinfo.output_width >= iw*4 |
|
|
451 | && cinfo.output_height >= ih*4) |
|
|
452 | { |
|
|
453 | cinfo.scale_denom <<= 1; |
|
|
454 | jpeg_calc_output_dimensions (&cinfo); |
|
|
455 | } |
|
|
456 | } |
|
|
457 | |
|
|
458 | if (cinfo.output_components != 3) |
|
|
459 | longjmp (jerr.setjmp_buffer, 3); |
|
|
460 | |
|
|
461 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
|
|
462 | { |
|
|
463 | cinfo.out_color_space = JCS_CMYK; |
|
|
464 | cinfo.output_components = 4; |
|
|
465 | } |
|
|
466 | |
|
|
467 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
|
|
468 | if (!RETVAL) |
|
|
469 | longjmp (jerr.setjmp_buffer, 2); |
|
|
470 | |
|
|
471 | data = gdk_pixbuf_get_pixels (RETVAL); |
|
|
472 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
473 | |
|
|
474 | jpeg_start_decompress (&cinfo); |
|
|
475 | |
|
|
476 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
477 | { |
|
|
478 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
|
479 | JSAMPROW rp[4]; |
|
|
480 | |
|
|
481 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
482 | rp [1] = (guchar *)rp [0] + rs; |
|
|
483 | rp [2] = (guchar *)rp [1] + rs; |
|
|
484 | rp [3] = (guchar *)rp [2] + rs; |
|
|
485 | |
|
|
486 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
487 | } |
|
|
488 | |
|
|
489 | if (cinfo.out_color_space == JCS_CMYK) |
|
|
490 | { |
|
|
491 | guchar *end = data + cinfo.output_height * rs; |
|
|
492 | |
|
|
493 | while (data < end) |
|
|
494 | { |
|
|
495 | U32 c = data [0]; |
|
|
496 | U32 m = data [1]; |
|
|
497 | U32 y = data [2]; |
|
|
498 | U32 k = data [3]; |
|
|
499 | |
|
|
500 | if (0) |
|
|
501 | if (cinfo.Adobe_transform == 2) |
|
|
502 | { |
|
|
503 | c ^= 0xff; |
|
|
504 | m ^= 0xff; |
|
|
505 | y ^= 0xff; |
|
|
506 | k ^= 0xff; |
|
|
507 | } |
|
|
508 | |
|
|
509 | data [0] = (c * k + 0x80) / 0xff; |
|
|
510 | data [1] = (m * k + 0x80) / 0xff; |
|
|
511 | data [2] = (y * k + 0x80) / 0xff; |
|
|
512 | data [3] = 0xff; |
|
|
513 | |
|
|
514 | data += 4; |
|
|
515 | } |
|
|
516 | } |
|
|
517 | |
|
|
518 | jpeg_finish_decompress (&cinfo); |
|
|
519 | fclose (fp); |
|
|
520 | jpeg_destroy_decompress (&cinfo); |
|
|
521 | perlinterp_acquire (); |
|
|
522 | } |
|
|
523 | OUTPUT: |
|
|
524 | RETVAL |
|
|
525 | |
|
|
526 | void |
|
|
527 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
|
528 | PPCODE: |
|
|
529 | perlinterp_release (); |
|
|
530 | { |
|
|
531 | int w = gdk_pixbuf_get_width (a); |
|
|
532 | int h = gdk_pixbuf_get_height (a); |
|
|
533 | |
|
|
534 | int sa = gdk_pixbuf_get_rowstride (a); |
|
|
535 | int sb = gdk_pixbuf_get_rowstride (b); |
|
|
536 | |
|
|
537 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
|
538 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
|
539 | |
|
|
540 | int x, y; |
|
|
541 | |
|
|
542 | assert (w == gdk_pixbuf_get_width (b)); |
|
|
543 | assert (h == gdk_pixbuf_get_height (b)); |
|
|
544 | |
|
|
545 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
|
546 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
|
547 | |
|
|
548 | double diff = 0.; |
|
|
549 | int peak = 0; |
|
|
550 | |
|
|
551 | if (w && h) |
|
|
552 | for (y = 0; y < h; y++) |
|
|
553 | { |
|
|
554 | guchar *pa_ = pa + y * sa; |
|
|
555 | guchar *pb_ = pb + y * sb; |
|
|
556 | |
|
|
557 | for (x = 0; x < w; x++) |
|
|
558 | { |
|
|
559 | int d; |
|
|
560 | |
|
|
561 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
562 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
563 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
564 | } |
|
|
565 | } |
|
|
566 | |
|
|
567 | perlinterp_acquire (); |
|
|
568 | |
|
|
569 | EXTEND (SP, 2); |
|
|
570 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
571 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
572 | } |
|
|
573 | |
|
|
574 | ############################################################################# |
|
|
575 | |
| 62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
576 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
| 63 | |
577 | |
|
|
578 | # currently only works for filenames (octet strings) |
|
|
579 | |
|
|
580 | SV * |
|
|
581 | foldcase (SV *pathsv) |
|
|
582 | PROTOTYPE: $ |
|
|
583 | CODE: |
|
|
584 | { |
|
|
585 | STRLEN plen; |
|
|
586 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
587 | U8 *pend = path + plen; |
|
|
588 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
589 | |
|
|
590 | while (path < pend) |
|
|
591 | { |
|
|
592 | U8 ch = *path; |
|
|
593 | |
|
|
594 | if (ch >= 'a' && ch <= 'z') |
|
|
595 | *dstp++ = *path++; |
|
|
596 | else if (ch >= 'A' && ch <= 'Z') |
|
|
597 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
598 | else if (ch >= '0' && ch <= '9') |
|
|
599 | { |
|
|
600 | STRLEN el, nl = 0; |
|
|
601 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
602 | path++, nl++; |
|
|
603 | |
|
|
604 | for (el = nl; el < 6; el++) |
|
|
605 | *dstp++ = '0'; |
|
|
606 | |
|
|
607 | memcpy (dstp, path - nl, nl); |
|
|
608 | dstp += nl; |
|
|
609 | } |
|
|
610 | else |
|
|
611 | *dstp++ = *path++; |
|
|
612 | #if 0 |
|
|
613 | else |
|
|
614 | { |
|
|
615 | STRLEN cl; |
|
|
616 | to_utf8_fold (path, dstp, &cl); |
|
|
617 | dstp += cl; |
|
|
618 | path += is_utf8_char (path); |
|
|
619 | } |
|
|
620 | #endif |
|
|
621 | } |
|
|
622 | |
|
|
623 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
624 | } |
|
|
625 | OUTPUT: |
|
|
626 | RETVAL |
|
|
627 | |
| 64 | GdkPixbuf_noinc * |
628 | GdkPixbuf_noinc * |
| 65 | p7_to_pb (int w, int h, guchar *src) |
629 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
630 | PROTOTYPE: @ |
| 66 | CODE: |
631 | CODE: |
| 67 | { |
632 | { |
| 68 | int x, y; |
633 | int x, y; |
| 69 | guchar *dst, *d; |
634 | guchar *dst, *d; |
| 70 | int dstr; |
635 | int dstr; |
|
|
636 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
| 71 | |
637 | |
| 72 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
638 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
| 73 | dst = gdk_pixbuf_get_pixels (RETVAL); |
639 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
640 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 75 | |
641 | |
| … | |
… | |
| 84 | } |
650 | } |
| 85 | } |
651 | } |
| 86 | OUTPUT: |
652 | OUTPUT: |
| 87 | RETVAL |
653 | RETVAL |
| 88 | |
654 | |
|
|
655 | ############################################################################# |
|
|
656 | |
|
|
657 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
658 | |
|
|
659 | void |
|
|
660 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
661 | CODE: |
|
|
662 | { |
|
|
663 | int w = gdk_pixbuf_get_width (pb); |
|
|
664 | int h = gdk_pixbuf_get_height (pb); |
|
|
665 | int x, y, i; |
|
|
666 | guchar *dst; |
|
|
667 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
668 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
669 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
670 | |
|
|
671 | a85_init (); |
|
|
672 | |
|
|
673 | for (y = 0; y < h; y++) |
|
|
674 | for (x = 0; x < w; x++) |
|
|
675 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
676 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
677 | |
|
|
678 | a85_finish (fp); |
|
|
679 | } |
|
|
680 | |
|
|
681 | void |
|
|
682 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
683 | CODE: |
|
|
684 | { |
|
|
685 | int w = gdk_pixbuf_get_width (pb); |
|
|
686 | int h = gdk_pixbuf_get_height (pb); |
|
|
687 | int x, y, i; |
|
|
688 | guchar *dst; |
|
|
689 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
690 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
691 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
692 | |
|
|
693 | for (y = 0; y < h; y++) |
|
|
694 | for (x = 0; x < w; x++) |
|
|
695 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
696 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
697 | } |
|
|
698 | |
|
|
699 | ############################################################################# |
|
|
700 | |
|
|
701 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
702 | |
| 89 | SV * |
703 | SV * |
| 90 | pb_to_p7 (GdkPixbuf *pb) |
704 | pb_to_hv84 (GdkPixbuf *pb) |
| 91 | CODE: |
705 | CODE: |
| 92 | { |
706 | { |
| 93 | int w = gdk_pixbuf_get_width (pb); |
707 | int w = gdk_pixbuf_get_width (pb); |
| 94 | int h = gdk_pixbuf_get_height (pb); |
708 | int h = gdk_pixbuf_get_height (pb); |
| 95 | int x, y; |
709 | int x, y; |
| 96 | guchar *dst; |
710 | guchar *dst; |
| 97 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
711 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 98 | guchar *src = gdk_pixbuf_get_pixels (pb); |
712 | guchar *src = gdk_pixbuf_get_pixels (pb); |
| 99 | int sstr = gdk_pixbuf_get_rowstride (pb); |
713 | int sstr = gdk_pixbuf_get_rowstride (pb); |
| 100 | |
714 | |
| 101 | RETVAL = newSV (w * h); |
715 | RETVAL = newSV (6 * 8 * 12 / 8); |
| 102 | SvPOK_only (RETVAL); |
716 | SvPOK_only (RETVAL); |
| 103 | SvCUR_set (RETVAL, w * h); |
717 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
| 104 | |
718 | |
| 105 | dst = SvPVX (RETVAL); |
719 | dst = (guchar *)SvPVX (RETVAL); |
|
|
720 | |
|
|
721 | /* some primitive error distribution + random dithering */ |
| 106 | |
722 | |
| 107 | for (y = 0; y < h; y++) |
723 | for (y = 0; y < h; y++) |
| 108 | { |
724 | { |
| 109 | /* use a very primitive form of error distribution. */ |
725 | guchar *p = src + y * sstr; |
| 110 | int er = 0, eg = 0, eb = 0; |
|
|
| 111 | |
726 | |
| 112 | for (x = 0; x < w; x++) |
727 | for (x = 0; x < w; x += 2) |
| 113 | { |
728 | { |
| 114 | int r, g, b; |
729 | unsigned int r, g, b, h, s, v, H, V1, V2; |
| 115 | guchar *p = src + x * bpp + y * sstr; |
|
|
| 116 | |
730 | |
| 117 | r = ((p[0] + er) * 7 + 128) / 255; |
731 | if (bpp == 3) |
| 118 | g = ((p[1] + eg) * 7 + 128) / 255; |
732 | r = *p++, g = *p++, b = *p++; |
| 119 | b = ((p[2] + eb) * 3 + 128) / 255; |
733 | else if (bpp == 1) |
|
|
734 | r = g = b = *p++; |
|
|
735 | else |
|
|
736 | abort (); |
| 120 | |
737 | |
| 121 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
738 | rgb_to_hsv (r, g, b, &h, &s, &v); |
| 122 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
| 123 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
| 124 | |
739 | |
| 125 | er += p[0] - (r * 255 + 4) / 7; |
740 | H = (h * 15 / 255) << 4; |
| 126 | eg += p[1] - (g * 255 + 4) / 7; |
741 | V1 = v; |
| 127 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
| 128 | |
742 | |
| 129 | *dst++ = r << 5 | g << 2 | b; |
743 | if (bpp == 3) |
|
|
744 | r = *p++, g = *p++, b = *p++; |
|
|
745 | else if (bpp == 1) |
|
|
746 | r = g = b = *p++; |
|
|
747 | else |
|
|
748 | abort (); |
|
|
749 | |
|
|
750 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
751 | |
|
|
752 | H |= h * 15 / 255; |
|
|
753 | V2 = v; |
|
|
754 | |
|
|
755 | *dst++ = H; |
|
|
756 | *dst++ = V1; |
|
|
757 | *dst++ = V2; |
| 130 | } |
758 | } |
| 131 | } |
759 | } |
| 132 | } |
760 | } |
| 133 | OUTPUT: |
761 | OUTPUT: |
| 134 | RETVAL |
762 | RETVAL |
| 135 | |
763 | |
|
|
764 | SV * |
|
|
765 | hv84_to_av (unsigned char *hv84) |
|
|
766 | CODE: |
|
|
767 | { |
|
|
768 | int i = 72 / 3; |
|
|
769 | AV *av = newAV (); |
| 136 | |
770 | |
|
|
771 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
772 | while (i--) |
|
|
773 | { |
|
|
774 | int h = *hv84++; |
|
|
775 | int v1 = *hv84++; |
|
|
776 | int v2 = *hv84++; |
| 137 | |
777 | |
|
|
778 | av_push (av, newSViv (v1)); |
|
|
779 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
780 | av_push (av, newSViv (v2)); |
|
|
781 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
782 | } |
|
|
783 | } |
|
|
784 | OUTPUT: |
|
|
785 | RETVAL |
|
|
786 | |
|
|
787 | ############################################################################# |
|
|
788 | |
|
|
789 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
790 | |
|
|
791 | SV * |
|
|
792 | extract_features (SV *ar) |
|
|
793 | CODE: |
|
|
794 | { |
|
|
795 | int i; |
|
|
796 | AV *av, *result; |
|
|
797 | |
|
|
798 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
799 | croak ("Not an array ref as first argument to extract_features"); |
|
|
800 | |
|
|
801 | av = (AV *) SvRV (ar); |
|
|
802 | result = newAV (); |
|
|
803 | |
|
|
804 | for (i = 0; i <= av_len (av); ++i) |
|
|
805 | { |
|
|
806 | SV *sv = *av_fetch (av, i, 1); |
|
|
807 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
808 | |
|
|
809 | SvPOK_on (histsv); |
|
|
810 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
811 | float *hist = (float *)SvPVX (histsv); |
|
|
812 | |
|
|
813 | struct feature f_h, f_s, f_v; |
|
|
814 | feature_init (&f_h); |
|
|
815 | feature_init (&f_s); |
|
|
816 | feature_init (&f_v); |
|
|
817 | |
|
|
818 | { |
|
|
819 | STRLEN len; |
|
|
820 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
821 | while (len >= 3) |
|
|
822 | { |
|
|
823 | unsigned int r, g, b, h, s, v; |
|
|
824 | r = *buf++; g = *buf++; b = *buf++; |
|
|
825 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
826 | |
|
|
827 | feature_update_pass_1 (&f_h, h); |
|
|
828 | feature_update_pass_1 (&f_s, s); |
|
|
829 | feature_update_pass_1 (&f_v, v); |
|
|
830 | |
|
|
831 | len -= 3; |
|
|
832 | } |
|
|
833 | |
|
|
834 | feature_finish_pass_1 (&f_h); |
|
|
835 | feature_finish_pass_1 (&f_s); |
|
|
836 | feature_finish_pass_1 (&f_v); |
|
|
837 | } |
|
|
838 | |
|
|
839 | { |
|
|
840 | STRLEN len; |
|
|
841 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
842 | while (len >= 3) |
|
|
843 | { |
|
|
844 | unsigned int r, g, b, h, s, v; |
|
|
845 | r = *buf++; g = *buf++; b = *buf++; |
|
|
846 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
847 | |
|
|
848 | feature_update_pass_2 (&f_h, h); |
|
|
849 | feature_update_pass_2 (&f_s, s); |
|
|
850 | feature_update_pass_2 (&f_v, v); |
|
|
851 | |
|
|
852 | len -= 3; |
|
|
853 | } |
|
|
854 | |
|
|
855 | feature_finish_pass_2 (&f_h); |
|
|
856 | feature_finish_pass_2 (&f_s); |
|
|
857 | feature_finish_pass_2 (&f_v); |
|
|
858 | } |
|
|
859 | |
|
|
860 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
861 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
862 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
863 | |
|
|
864 | av_push (result, histsv); |
|
|
865 | } |
|
|
866 | |
|
|
867 | RETVAL = newRV_noinc ((SV *)result); |
|
|
868 | } |
|
|
869 | OUTPUT: |
|
|
870 | RETVAL |
|
|
871 | |
