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 <jpeglib.h> |
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9 | #include <glib.h> |
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10 | #include <gtk/gtk.h> |
5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
11 | #include <gdk-pixbuf/gdk-pixbuf.h> |
6 | |
12 | |
7 | #include <gperl.h> |
13 | #include <gperl.h> |
8 | #include <gtk2perl.h> |
14 | #include <gtk2perl.h> |
9 | |
15 | |
10 | #define IW 80 |
16 | #define IW 80 /* MUST match Schnauer.pm! */ |
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17 | #define IH 60 /* MUST match Schnauer.pm! */ |
11 | |
18 | |
12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
19 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
13 | |
20 | |
14 | #define LINELENGTH 240 |
21 | #define LINELENGTH 240 |
15 | |
22 | |
16 | #define ELLIPSIS "\xe2\x80\xa6" |
23 | #define ELLIPSIS "\xe2\x80\xa6" |
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24 | |
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25 | struct jpg_err_mgr |
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26 | { |
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27 | struct jpeg_error_mgr err; |
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28 | jmp_buf setjmp_buffer; |
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29 | }; |
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30 | |
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31 | static void |
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32 | cv_error_exit (j_common_ptr cinfo) |
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33 | { |
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34 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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35 | } |
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36 | |
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37 | static void |
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38 | cv_error_output (j_common_ptr cinfo) |
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39 | { |
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40 | return; |
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41 | } |
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42 | |
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43 | static void |
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44 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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45 | unsigned int *h, unsigned int *s, unsigned int *v) |
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46 | { |
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47 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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48 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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49 | unsigned int delta = mx - mn; |
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50 | |
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51 | *v = mx; |
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52 | |
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53 | *s = mx ? delta * 255 / mx : 0; |
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54 | |
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55 | if (delta == 0) |
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56 | *h = 0; |
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57 | else |
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58 | { |
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59 | if (r == mx) |
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60 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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61 | else if (g == mx) |
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62 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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63 | else if (b == mx) |
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64 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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65 | |
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66 | *h &= 255; |
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67 | } |
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68 | } |
17 | |
69 | |
18 | static guint32 a85_val; |
70 | static guint32 a85_val; |
19 | static guint a85_cnt; |
71 | static guint a85_cnt; |
20 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
72 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
21 | |
73 | |
… | |
… | |
68 | *a85_ptr++ = '\n'; |
120 | *a85_ptr++ = '\n'; |
69 | |
121 | |
70 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
122 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
71 | } |
123 | } |
72 | |
124 | |
73 | static void |
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74 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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75 | unsigned int *h, unsigned int *s, unsigned int *v) |
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76 | { |
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77 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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78 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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79 | unsigned int delta = mx - mn; |
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80 | |
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81 | *v = mx; |
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82 | |
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83 | *s = mx ? delta * 255 / mx : 0; |
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84 | |
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85 | if (delta == 0) |
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86 | *h = 0; |
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87 | else |
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88 | { |
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89 | if (r == mx) |
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90 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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91 | else if (g == mx) |
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92 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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93 | else if (b == mx) |
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94 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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95 | |
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96 | *h &= 255; |
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97 | } |
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98 | } |
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99 | |
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100 | ///////////////////////////////////////////////////////////////////////////// |
125 | ///////////////////////////////////////////////////////////////////////////// |
101 | |
126 | |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
127 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
103 | |
128 | |
104 | PROTOTYPES: ENABLE |
129 | PROTOTYPES: ENABLE |
105 | |
130 | |
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131 | # missing in Gtk2 perl module |
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132 | |
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133 | gboolean |
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134 | gdk_net_wm_supports (GdkAtom property) |
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135 | CODE: |
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136 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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137 | RETVAL = gdk_net_wm_supports (property); |
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138 | #else |
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139 | RETVAL = 0; |
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140 | #endif |
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141 | OUTPUT: |
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142 | RETVAL |
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143 | |
106 | GdkPixbuf_noinc * |
144 | GdkPixbuf_noinc * |
107 | transpose (GdkPixbuf *pb) |
145 | dealpha_expose (GdkPixbuf *pb) |
108 | CODE: |
146 | CODE: |
109 | { |
147 | { |
110 | int w = gdk_pixbuf_get_width (pb); |
148 | int w = gdk_pixbuf_get_width (pb); |
111 | int h = gdk_pixbuf_get_height (pb); |
149 | int h = gdk_pixbuf_get_height (pb); |
112 | int bpp = gdk_pixbuf_get_n_channels (pb); |
150 | int bpp = gdk_pixbuf_get_n_channels (pb); |
113 | int x, y, i; |
151 | int x, y, i; |
114 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
152 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
115 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
153 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
116 | |
154 | |
117 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
155 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
118 | |
156 | |
119 | dst = gdk_pixbuf_get_pixels (RETVAL); |
157 | dst = gdk_pixbuf_get_pixels (RETVAL); |
120 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
158 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
121 | |
159 | |
122 | for (y = 0; y < h; y++) |
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123 | for (x = 0; x < w; x++) |
160 | for (x = 0; x < w; x++) |
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161 | for (y = 0; y < h; y++) |
124 | for (i = 0; i < bpp; i++) |
162 | for (i = 0; i < 3; i++) |
125 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
163 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
126 | } |
164 | } |
127 | OUTPUT: |
165 | OUTPUT: |
128 | RETVAL |
166 | RETVAL |
129 | |
167 | |
130 | GdkPixbuf_noinc * |
168 | GdkPixbuf_noinc * |
131 | flop (GdkPixbuf *pb) |
169 | rotate (GdkPixbuf *pb, int angle) |
132 | CODE: |
170 | CODE: |
133 | { |
171 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
134 | int w = gdk_pixbuf_get_width (pb); |
172 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
135 | int h = gdk_pixbuf_get_height (pb); |
173 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
136 | int bpp = gdk_pixbuf_get_n_channels (pb); |
174 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
137 | int x, y, i; |
175 | : angle); |
138 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
176 | OUTPUT: |
139 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
177 | RETVAL |
140 | |
178 | |
141 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
179 | GdkPixbuf_noinc * |
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180 | load_jpeg (SV *path, int thumbnail=0) |
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181 | CODE: |
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182 | { |
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183 | struct jpeg_decompress_struct cinfo; |
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184 | struct jpg_err_mgr jerr; |
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185 | guchar *data; |
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186 | int rs; |
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187 | FILE *fp; |
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188 | volatile GdkPixbuf *pb = 0; |
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189 | gchar *filename; |
142 | |
190 | |
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191 | RETVAL = 0; |
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192 | |
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193 | filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0); |
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194 | fp = fopen (filename, "rb"); |
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195 | g_free (filename); |
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196 | |
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197 | if (!fp) |
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198 | XSRETURN_UNDEF; |
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199 | |
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200 | cinfo.err = jpeg_std_error (&jerr.err); |
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201 | |
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202 | jerr.err.error_exit = cv_error_exit; |
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203 | jerr.err.output_message = cv_error_output; |
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204 | |
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205 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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206 | { |
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207 | fclose (fp); |
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208 | jpeg_destroy_decompress (&cinfo); |
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209 | |
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210 | if (pb) |
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211 | g_object_unref ((gpointer)pb); |
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212 | |
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213 | XSRETURN_UNDEF; |
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214 | } |
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215 | |
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216 | jpeg_create_decompress (&cinfo); |
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217 | |
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218 | jpeg_stdio_src (&cinfo, fp); |
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219 | jpeg_read_header (&cinfo, TRUE); |
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220 | |
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221 | cinfo.dct_method = JDCT_DEFAULT; |
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222 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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223 | cinfo.do_block_smoothing = FALSE; |
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224 | cinfo.out_color_space = JCS_RGB; |
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225 | cinfo.quantize_colors = FALSE; |
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226 | |
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227 | cinfo.scale_num = 1; |
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228 | cinfo.scale_denom = 1; |
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229 | |
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230 | jpeg_calc_output_dimensions (&cinfo); |
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231 | |
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232 | if (thumbnail) |
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233 | { |
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234 | cinfo.dct_method = JDCT_FASTEST; |
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235 | cinfo.do_fancy_upsampling = FALSE; |
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236 | |
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237 | while (cinfo.scale_denom < 8 |
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238 | && cinfo.output_width >= IW*4 |
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239 | && cinfo.output_height >= IH*4) |
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240 | { |
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241 | cinfo.scale_denom <<= 1; |
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242 | jpeg_calc_output_dimensions (&cinfo); |
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243 | } |
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244 | } |
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245 | |
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246 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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247 | if (!RETVAL) |
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248 | longjmp (jerr.setjmp_buffer, 2); |
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249 | |
143 | dst = gdk_pixbuf_get_pixels (RETVAL); |
250 | data = gdk_pixbuf_get_pixels (RETVAL); |
144 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
251 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
145 | |
252 | |
146 | for (y = 0; y < h; y++) |
253 | if (cinfo.output_components != 3) |
147 | for (x = 0; x < w; x++) |
254 | longjmp (jerr.setjmp_buffer, 3); |
148 | for (i = 0; i < bpp; i++) |
255 | |
149 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
256 | jpeg_start_decompress (&cinfo); |
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257 | |
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258 | while (cinfo.output_scanline < cinfo.output_height) |
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259 | { |
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260 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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261 | JSAMPROW rp[4]; |
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262 | |
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263 | rp [0] = data + cinfo.output_scanline * rs; |
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264 | rp [1] = (guchar *)rp [0] + rs; |
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265 | rp [2] = (guchar *)rp [1] + rs; |
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266 | rp [3] = (guchar *)rp [2] + rs; |
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267 | |
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268 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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269 | } |
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270 | |
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271 | jpeg_finish_decompress (&cinfo); |
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272 | fclose (fp); |
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273 | jpeg_destroy_decompress (&cinfo); |
150 | } |
274 | } |
151 | OUTPUT: |
275 | OUTPUT: |
152 | RETVAL |
276 | RETVAL |
153 | |
277 | |
154 | ############################################################################# |
278 | ############################################################################# |
155 | |
279 | |
156 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
280 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
157 | |
281 | |
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282 | SV * |
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283 | foldcase (SV *pathsv) |
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284 | PROTOTYPE: $ |
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285 | CODE: |
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286 | { |
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287 | STRLEN plen; |
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288 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
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289 | U8 *pend = path + plen; |
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290 | U8 dst [plen * 6 * 3], *dstp = dst; |
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291 | |
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292 | while (path < pend) |
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293 | { |
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294 | U8 ch = *path; |
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295 | |
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296 | if (ch >= 'a' && ch <= 'z') |
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297 | *dstp++ = *path++; |
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298 | else if (ch >= '0' && ch <= '9') |
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299 | { |
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300 | STRLEN el, nl = 0; |
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301 | while (*path >= '0' && *path <= '9' && path < pend) |
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302 | path++, nl++; |
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303 | |
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304 | for (el = nl; el < 6; el++) |
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305 | *dstp++ = '0'; |
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306 | |
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307 | memcpy (dstp, path - nl, nl); |
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308 | dstp += nl; |
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309 | } |
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310 | else |
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311 | { |
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312 | STRLEN cl; |
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313 | to_utf8_fold (path, dstp, &cl); |
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314 | dstp += cl; |
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315 | path += is_utf8_char (path); |
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316 | } |
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317 | } |
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318 | |
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319 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
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320 | } |
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321 | OUTPUT: |
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322 | RETVAL |
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323 | |
158 | GdkPixbuf_noinc * |
324 | GdkPixbuf_noinc * |
159 | p7_to_pb (int w, int h, guchar *src) |
325 | p7_to_pb (int w, int h, SV *src_sv) |
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326 | PROTOTYPE: @ |
160 | CODE: |
327 | CODE: |
161 | { |
328 | { |
162 | int x, y; |
329 | int x, y; |
163 | guchar *dst, *d; |
330 | guchar *dst, *d; |
164 | int dstr; |
331 | int dstr; |
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332 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
165 | |
333 | |
166 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
334 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
167 | dst = gdk_pixbuf_get_pixels (RETVAL); |
335 | dst = gdk_pixbuf_get_pixels (RETVAL); |
168 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
336 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
169 | |
337 | |
… | |
… | |
178 | } |
346 | } |
179 | } |
347 | } |
180 | OUTPUT: |
348 | OUTPUT: |
181 | RETVAL |
349 | RETVAL |
182 | |
350 | |
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351 | ############################################################################# |
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352 | |
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353 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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354 | |
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355 | void |
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356 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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357 | CODE: |
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358 | { |
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359 | int w = gdk_pixbuf_get_width (pb); |
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360 | int h = gdk_pixbuf_get_height (pb); |
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361 | int x, y, i; |
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362 | guchar *dst; |
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363 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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364 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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365 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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366 | |
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367 | a85_init (); |
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368 | |
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369 | for (y = 0; y < h; y++) |
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370 | for (x = 0; x < w; x++) |
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371 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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372 | a85_push (fp, src [x * bpp + y * sstr + i]); |
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373 | |
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374 | a85_finish (fp); |
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375 | } |
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376 | |
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377 | void |
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378 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
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379 | CODE: |
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380 | { |
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381 | int w = gdk_pixbuf_get_width (pb); |
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382 | int h = gdk_pixbuf_get_height (pb); |
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383 | int x, y, i; |
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384 | guchar *dst; |
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385 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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386 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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387 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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388 | |
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389 | for (y = 0; y < h; y++) |
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390 | for (x = 0; x < w; x++) |
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391 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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392 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
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393 | } |
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394 | |
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395 | ############################################################################# |
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396 | |
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397 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
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398 | |
183 | SV * |
399 | SV * |
184 | pb_to_p7 (GdkPixbuf *pb) |
400 | pb_to_hv84 (GdkPixbuf *pb) |
185 | CODE: |
401 | CODE: |
186 | { |
402 | { |
187 | int w = gdk_pixbuf_get_width (pb); |
403 | int w = gdk_pixbuf_get_width (pb); |
188 | int h = gdk_pixbuf_get_height (pb); |
404 | int h = gdk_pixbuf_get_height (pb); |
189 | int x, y; |
405 | int x, y; |
190 | guchar *dst; |
406 | guchar *dst; |
191 | int bpp = gdk_pixbuf_get_n_channels (pb); |
407 | int bpp = gdk_pixbuf_get_n_channels (pb); |
192 | guchar *src = gdk_pixbuf_get_pixels (pb); |
408 | guchar *src = gdk_pixbuf_get_pixels (pb); |
193 | int sstr = gdk_pixbuf_get_rowstride (pb); |
409 | int sstr = gdk_pixbuf_get_rowstride (pb); |
194 | int Er[IW], Eg[IW], Eb[IW]; |
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195 | int seed = 77; |
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196 | |
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197 | RETVAL = newSV (w * h); |
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198 | SvPOK_only (RETVAL); |
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199 | SvCUR_set (RETVAL, w * h); |
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200 | |
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201 | dst = SvPVX (RETVAL); |
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202 | |
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203 | memset (Er, 0, sizeof (int) * IW); |
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204 | memset (Eg, 0, sizeof (int) * IW); |
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205 | memset (Eb, 0, sizeof (int) * IW); |
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206 | |
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207 | /* some primitive error distribution + random dithering */ |
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208 | |
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209 | for (y = 0; y < h; y++) |
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210 | { |
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211 | int er = 0, eg = 0, eb = 0; |
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212 | |
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213 | for (x = 0; x < w; x++) |
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214 | { |
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215 | int r, g, b; |
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216 | guchar *p = src + x * bpp + y * sstr; |
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217 | |
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218 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
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219 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
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220 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
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221 | |
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222 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
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223 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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224 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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225 | |
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226 | er += p[0] - (r * 255 + 4) / 7; |
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227 | eg += p[1] - (g * 255 + 4) / 7; |
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228 | eb += p[2] - (b * 255 + 2) / 3; |
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229 | |
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230 | Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; |
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231 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; |
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232 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; |
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233 | |
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234 | *dst++ = r << 5 | g << 2 | b; |
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235 | } |
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236 | } |
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237 | } |
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238 | OUTPUT: |
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239 | RETVAL |
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240 | |
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241 | SV * |
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242 | make_histogram (SV *ar) |
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243 | CODE: |
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244 | { |
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245 | int i; |
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246 | AV *av, *result; |
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247 | |
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248 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
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249 | croak ("Not an array ref as first argument to make_histogram"); |
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250 | |
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251 | av = (AV *) SvRV (ar); |
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252 | result = newAV (); |
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253 | |
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254 | for (i = 0; i <= av_len (av); ++i) |
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255 | { |
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256 | int bigst, j; |
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257 | SV *sv = *av_fetch (av, i, 1); |
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258 | STRLEN len; |
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259 | char *buf = SvPVbyte (sv, len); |
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260 | |
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261 | int tmphist[256]; |
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262 | char *hist; |
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263 | |
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264 | SV *histsv = newSV (257); |
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265 | sv_upgrade (histsv, SVt_PV); |
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266 | SvCUR_set (histsv, 256); |
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267 | hist = SvPV_nolen (histsv); |
|
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268 | |
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269 | Zero (tmphist, 256, int); |
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270 | |
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271 | while (len--) |
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272 | ++tmphist[(unsigned char)*buf++]; |
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273 | |
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274 | bigst = 1; |
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275 | for (j = 0; j < 256; ++j) |
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276 | if (tmphist[j] > bigst) |
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277 | bigst = tmphist[j]; |
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278 | |
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279 | for (j = 0; j < 256; ++j) |
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280 | hist[j] = tmphist[j] * 255 / bigst; |
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281 | |
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282 | av_push (result, histsv); |
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283 | } |
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284 | |
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285 | RETVAL = newRV_noinc ((SV *)result); |
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286 | } |
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287 | OUTPUT: |
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288 | RETVAL |
|
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289 | |
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290 | |
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291 | |
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292 | ############################################################################# |
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293 | |
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294 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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295 | |
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296 | void |
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297 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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298 | CODE: |
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299 | { |
|
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300 | int w = gdk_pixbuf_get_width (pb); |
|
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301 | int h = gdk_pixbuf_get_height (pb); |
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302 | int x, y, i; |
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303 | guchar *dst; |
|
|
304 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
305 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
306 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
307 | |
|
|
308 | a85_init (); |
|
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309 | |
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310 | for (y = 0; y < h; y++) |
|
|
311 | for (x = 0; x < w; x++) |
|
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312 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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313 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
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314 | |
|
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315 | a85_finish (fp); |
|
|
316 | } |
|
|
317 | |
|
|
318 | void |
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|
319 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
320 | CODE: |
|
|
321 | { |
|
|
322 | int w = gdk_pixbuf_get_width (pb); |
|
|
323 | int h = gdk_pixbuf_get_height (pb); |
|
|
324 | int x, y, i; |
|
|
325 | guchar *dst; |
|
|
326 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
327 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
328 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
329 | |
|
|
330 | for (y = 0; y < h; y++) |
|
|
331 | for (x = 0; x < w; x++) |
|
|
332 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
333 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
334 | } |
|
|
335 | |
|
|
336 | ############################################################################# |
|
|
337 | |
|
|
338 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
339 | |
|
|
340 | SV * |
|
|
341 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
342 | CODE: |
|
|
343 | { |
|
|
344 | int w = gdk_pixbuf_get_width (pb); |
|
|
345 | int h = gdk_pixbuf_get_height (pb); |
|
|
346 | int x, y; |
|
|
347 | guchar *dst; |
|
|
348 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
349 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
350 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
351 | |
410 | |
352 | RETVAL = newSV (6 * 8 * 12 / 8); |
411 | RETVAL = newSV (6 * 8 * 12 / 8); |
353 | SvPOK_only (RETVAL); |
412 | SvPOK_only (RETVAL); |
354 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
413 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
355 | |
414 | |
356 | dst = SvPVX (RETVAL); |
415 | dst = (guchar *)SvPVX (RETVAL); |
357 | |
416 | |
358 | /* some primitive error distribution + random dithering */ |
417 | /* some primitive error distribution + random dithering */ |
359 | |
418 | |
360 | for (y = 0; y < h; y++) |
419 | for (y = 0; y < h; y++) |
361 | { |
420 | { |
… | |
… | |
419 | } |
478 | } |
420 | } |
479 | } |
421 | OUTPUT: |
480 | OUTPUT: |
422 | RETVAL |
481 | RETVAL |
423 | |
482 | |
|
|
483 | ############################################################################# |
424 | |
484 | |
|
|
485 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
425 | |
486 | |
|
|
487 | SV * |
|
|
488 | make_histograms (SV *ar) |
|
|
489 | CODE: |
|
|
490 | { |
|
|
491 | int i; |
|
|
492 | AV *av, *result; |
|
|
493 | |
|
|
494 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
495 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
496 | |
|
|
497 | av = (AV *) SvRV (ar); |
|
|
498 | result = newAV (); |
|
|
499 | |
|
|
500 | for (i = 0; i <= av_len (av); ++i) |
|
|
501 | { |
|
|
502 | const int HISTSIZE = 64; |
|
|
503 | |
|
|
504 | int j; |
|
|
505 | SV *sv = *av_fetch (av, i, 1); |
|
|
506 | STRLEN len; |
|
|
507 | char *buf = SvPVbyte (sv, len); |
|
|
508 | |
|
|
509 | int tmphist[HISTSIZE]; |
|
|
510 | float *hist; |
|
|
511 | |
|
|
512 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
513 | SvPOK_on (histsv); |
|
|
514 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
515 | hist = (float *)SvPVX (histsv); |
|
|
516 | |
|
|
517 | Zero (tmphist, sizeof (tmphist), char); |
|
|
518 | |
|
|
519 | for (j = len; j--; ) |
|
|
520 | { |
|
|
521 | unsigned int idx |
|
|
522 | = ((*buf & 0xc0) >> 2) |
|
|
523 | | ((*buf & 0x18) >> 1) |
|
|
524 | | (*buf & 0x03); |
|
|
525 | |
|
|
526 | ++tmphist[idx]; |
|
|
527 | ++buf; |
|
|
528 | } |
|
|
529 | |
|
|
530 | for (j = 0; j < HISTSIZE; ++j) |
|
|
531 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
532 | |
|
|
533 | av_push (result, histsv); |
|
|
534 | } |
|
|
535 | |
|
|
536 | RETVAL = newRV_noinc ((SV *)result); |
|
|
537 | } |
|
|
538 | OUTPUT: |
|
|
539 | RETVAL |
|
|
540 | |
|
|
541 | |