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 | |
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16 | #define IW 80 /* MUST match Schnauer.pm! */ |
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17 | #define IH 60 /* MUST match Schnauer.pm! */ |
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18 | |
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19 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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20 | |
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21 | #define LINELENGTH 240 |
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22 | |
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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 | } |
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69 | |
10 | static guint32 a85_val; |
70 | static guint32 a85_val; |
11 | static guint a85_cnt; |
71 | static guint a85_cnt; |
12 | static guchar a85_buf[80], *a85_ptr; |
72 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
13 | |
73 | |
14 | static void |
74 | static void |
15 | a85_init (void) |
75 | a85_init (void) |
16 | { |
76 | { |
17 | a85_cnt = 4; |
77 | a85_cnt = 4; |
… | |
… | |
47 | } |
107 | } |
48 | } |
108 | } |
49 | |
109 | |
50 | } |
110 | } |
51 | |
111 | |
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112 | static void |
52 | a85_finish (PerlIO *fp) |
113 | a85_finish (PerlIO *fp) |
53 | { |
114 | { |
54 | while (a85_cnt != 4) |
115 | while (a85_cnt != 4) |
55 | a85_push (fp, 0); |
116 | a85_push (fp, 0); |
56 | |
117 | |
… | |
… | |
59 | *a85_ptr++ = '\n'; |
120 | *a85_ptr++ = '\n'; |
60 | |
121 | |
61 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
122 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
62 | } |
123 | } |
63 | |
124 | |
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125 | ///////////////////////////////////////////////////////////////////////////// |
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126 | |
64 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
127 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
65 | |
128 | |
66 | PROTOTYPES: ENABLE |
129 | PROTOTYPES: ENABLE |
67 | |
130 | |
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131 | # missing function in perl. really :) |
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132 | int |
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133 | common_prefix_length (a, b) |
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134 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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135 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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136 | CODE: |
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137 | RETVAL = 0; |
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138 | |
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139 | while (*a == *b && *a) |
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140 | { |
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141 | RETVAL += (*a & 0xc0) != 0x80; |
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142 | a++, b++; |
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143 | } |
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144 | |
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145 | OUTPUT: |
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146 | RETVAL |
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147 | |
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148 | # missing in Gtk2 perl module |
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149 | |
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150 | gboolean |
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151 | gdk_net_wm_supports (GdkAtom property) |
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152 | CODE: |
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153 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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154 | RETVAL = gdk_net_wm_supports (property); |
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155 | #else |
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156 | RETVAL = 0; |
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157 | #endif |
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158 | OUTPUT: |
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159 | RETVAL |
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160 | |
68 | GdkPixbuf_noinc * |
161 | GdkPixbuf_noinc * |
69 | transpose (GdkPixbuf *pb) |
162 | dealpha_expose (GdkPixbuf *pb) |
70 | CODE: |
163 | CODE: |
71 | { |
164 | { |
72 | int w = gdk_pixbuf_get_width (pb); |
165 | int w = gdk_pixbuf_get_width (pb); |
73 | int h = gdk_pixbuf_get_height (pb); |
166 | int h = gdk_pixbuf_get_height (pb); |
74 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
167 | int bpp = gdk_pixbuf_get_n_channels (pb); |
75 | int x, y, i; |
168 | int x, y, i; |
76 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
169 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
77 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
170 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
78 | |
171 | |
79 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
172 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
80 | |
173 | |
81 | dst = gdk_pixbuf_get_pixels (RETVAL); |
174 | dst = gdk_pixbuf_get_pixels (RETVAL); |
82 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
175 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
83 | |
176 | |
84 | for (y = 0; y < h; y++) |
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85 | for (x = 0; x < w; x++) |
177 | for (x = 0; x < w; x++) |
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178 | for (y = 0; y < h; y++) |
86 | for (i = 0; i < bpp; i++) |
179 | for (i = 0; i < 3; i++) |
87 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
180 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
88 | } |
181 | } |
89 | OUTPUT: |
182 | OUTPUT: |
90 | RETVAL |
183 | RETVAL |
91 | |
184 | |
92 | GdkPixbuf_noinc * |
185 | GdkPixbuf_noinc * |
93 | flop (GdkPixbuf *pb) |
186 | rotate (GdkPixbuf *pb, int angle) |
94 | CODE: |
187 | CODE: |
95 | { |
188 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
96 | int w = gdk_pixbuf_get_width (pb); |
189 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
97 | int h = gdk_pixbuf_get_height (pb); |
190 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
98 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
191 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
99 | int x, y, i; |
192 | : angle); |
100 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
193 | OUTPUT: |
101 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
194 | RETVAL |
102 | |
195 | |
103 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
196 | GdkPixbuf_noinc * |
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197 | load_jpeg (SV *path, int thumbnail=0) |
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198 | CODE: |
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199 | { |
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200 | struct jpeg_decompress_struct cinfo; |
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201 | struct jpg_err_mgr jerr; |
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202 | guchar *data; |
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203 | int rs; |
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204 | FILE *fp; |
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205 | volatile GdkPixbuf *pb = 0; |
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206 | gchar *filename; |
104 | |
207 | |
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208 | RETVAL = 0; |
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209 | |
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210 | filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0); |
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211 | fp = fopen (filename, "rb"); |
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212 | g_free (filename); |
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213 | |
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214 | if (!fp) |
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215 | XSRETURN_UNDEF; |
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216 | |
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217 | cinfo.err = jpeg_std_error (&jerr.err); |
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218 | |
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219 | jerr.err.error_exit = cv_error_exit; |
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220 | jerr.err.output_message = cv_error_output; |
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221 | |
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222 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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223 | { |
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224 | fclose (fp); |
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225 | jpeg_destroy_decompress (&cinfo); |
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226 | |
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227 | if (pb) |
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228 | g_object_unref ((gpointer)pb); |
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229 | |
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230 | XSRETURN_UNDEF; |
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231 | } |
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232 | |
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233 | jpeg_create_decompress (&cinfo); |
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234 | |
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235 | jpeg_stdio_src (&cinfo, fp); |
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236 | jpeg_read_header (&cinfo, TRUE); |
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237 | |
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238 | cinfo.dct_method = JDCT_DEFAULT; |
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239 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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240 | cinfo.do_block_smoothing = FALSE; |
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241 | cinfo.out_color_space = JCS_RGB; |
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242 | cinfo.quantize_colors = FALSE; |
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243 | |
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244 | cinfo.scale_num = 1; |
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245 | cinfo.scale_denom = 1; |
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246 | |
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247 | jpeg_calc_output_dimensions (&cinfo); |
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248 | |
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249 | if (thumbnail) |
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250 | { |
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251 | cinfo.dct_method = JDCT_FASTEST; |
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252 | cinfo.do_fancy_upsampling = FALSE; |
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253 | |
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254 | while (cinfo.scale_denom < 8 |
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255 | && cinfo.output_width >= IW*4 |
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256 | && cinfo.output_height >= IH*4) |
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257 | { |
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258 | cinfo.scale_denom <<= 1; |
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259 | jpeg_calc_output_dimensions (&cinfo); |
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260 | } |
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261 | } |
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262 | |
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263 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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264 | if (!RETVAL) |
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265 | longjmp (jerr.setjmp_buffer, 2); |
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266 | |
105 | dst = gdk_pixbuf_get_pixels (RETVAL); |
267 | data = gdk_pixbuf_get_pixels (RETVAL); |
106 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
268 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
107 | |
269 | |
108 | for (y = 0; y < h; y++) |
270 | if (cinfo.output_components != 3) |
109 | for (x = 0; x < w; x++) |
271 | longjmp (jerr.setjmp_buffer, 3); |
110 | for (i = 0; i < bpp; i++) |
272 | |
111 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
273 | jpeg_start_decompress (&cinfo); |
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274 | |
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275 | while (cinfo.output_scanline < cinfo.output_height) |
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276 | { |
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277 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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278 | JSAMPROW rp[4]; |
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279 | |
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280 | rp [0] = data + cinfo.output_scanline * rs; |
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281 | rp [1] = (guchar *)rp [0] + rs; |
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282 | rp [2] = (guchar *)rp [1] + rs; |
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283 | rp [3] = (guchar *)rp [2] + rs; |
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284 | |
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285 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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286 | } |
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287 | |
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288 | jpeg_finish_decompress (&cinfo); |
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289 | fclose (fp); |
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290 | jpeg_destroy_decompress (&cinfo); |
112 | } |
291 | } |
113 | OUTPUT: |
292 | OUTPUT: |
114 | RETVAL |
293 | RETVAL |
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294 | |
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295 | ############################################################################# |
115 | |
296 | |
116 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
297 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
117 | |
298 | |
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299 | SV * |
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300 | foldcase (SV *pathsv) |
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301 | PROTOTYPE: $ |
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302 | CODE: |
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303 | { |
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304 | STRLEN plen; |
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305 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
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306 | U8 *pend = path + plen; |
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307 | U8 dst [plen * 6 * 3], *dstp = dst; |
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308 | |
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309 | while (path < pend) |
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310 | { |
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311 | U8 ch = *path; |
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312 | |
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313 | if (ch >= 'a' && ch <= 'z') |
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314 | *dstp++ = *path++; |
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315 | else if (ch >= '0' && ch <= '9') |
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316 | { |
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317 | STRLEN el, nl = 0; |
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318 | while (*path >= '0' && *path <= '9' && path < pend) |
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319 | path++, nl++; |
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320 | |
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321 | for (el = nl; el < 6; el++) |
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322 | *dstp++ = '0'; |
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323 | |
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324 | memcpy (dstp, path - nl, nl); |
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325 | dstp += nl; |
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326 | } |
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327 | else |
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328 | { |
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329 | STRLEN cl; |
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330 | to_utf8_fold (path, dstp, &cl); |
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331 | dstp += cl; |
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332 | path += is_utf8_char (path); |
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333 | } |
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334 | } |
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335 | |
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336 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
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337 | } |
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338 | OUTPUT: |
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339 | RETVAL |
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340 | |
118 | GdkPixbuf_noinc * |
341 | GdkPixbuf_noinc * |
119 | p7_to_pb (int w, int h, guchar *src) |
342 | p7_to_pb (int w, int h, SV *src_sv) |
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343 | PROTOTYPE: @ |
120 | CODE: |
344 | CODE: |
121 | { |
345 | { |
122 | int x, y; |
346 | int x, y; |
123 | guchar *dst, *d; |
347 | guchar *dst, *d; |
124 | int dstr; |
348 | int dstr; |
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349 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
125 | |
350 | |
126 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
351 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
127 | dst = gdk_pixbuf_get_pixels (RETVAL); |
352 | dst = gdk_pixbuf_get_pixels (RETVAL); |
128 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
353 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
129 | |
354 | |
… | |
… | |
138 | } |
363 | } |
139 | } |
364 | } |
140 | OUTPUT: |
365 | OUTPUT: |
141 | RETVAL |
366 | RETVAL |
142 | |
367 | |
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368 | ############################################################################# |
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369 | |
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370 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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371 | |
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372 | void |
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373 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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374 | CODE: |
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375 | { |
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376 | int w = gdk_pixbuf_get_width (pb); |
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377 | int h = gdk_pixbuf_get_height (pb); |
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378 | int x, y, i; |
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379 | guchar *dst; |
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380 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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381 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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382 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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383 | |
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384 | a85_init (); |
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385 | |
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386 | for (y = 0; y < h; y++) |
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387 | for (x = 0; x < w; x++) |
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388 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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389 | a85_push (fp, src [x * bpp + y * sstr + i]); |
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390 | |
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391 | a85_finish (fp); |
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392 | } |
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393 | |
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394 | void |
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395 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
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396 | CODE: |
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397 | { |
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398 | int w = gdk_pixbuf_get_width (pb); |
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399 | int h = gdk_pixbuf_get_height (pb); |
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400 | int x, y, i; |
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401 | guchar *dst; |
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402 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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403 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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404 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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405 | |
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406 | for (y = 0; y < h; y++) |
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407 | for (x = 0; x < w; x++) |
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408 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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409 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
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410 | } |
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411 | |
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412 | ############################################################################# |
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413 | |
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414 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
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415 | |
143 | SV * |
416 | SV * |
144 | pb_to_p7 (GdkPixbuf *pb) |
417 | pb_to_hv84 (GdkPixbuf *pb) |
145 | CODE: |
418 | CODE: |
146 | { |
419 | { |
147 | int w = gdk_pixbuf_get_width (pb); |
420 | int w = gdk_pixbuf_get_width (pb); |
148 | int h = gdk_pixbuf_get_height (pb); |
421 | int h = gdk_pixbuf_get_height (pb); |
149 | int x, y; |
422 | int x, y; |
150 | guchar *dst; |
423 | guchar *dst; |
151 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
424 | int bpp = gdk_pixbuf_get_n_channels (pb); |
152 | guchar *src = gdk_pixbuf_get_pixels (pb); |
425 | guchar *src = gdk_pixbuf_get_pixels (pb); |
153 | int sstr = gdk_pixbuf_get_rowstride (pb); |
426 | int sstr = gdk_pixbuf_get_rowstride (pb); |
154 | |
427 | |
155 | RETVAL = newSV (w * h); |
428 | RETVAL = newSV (6 * 8 * 12 / 8); |
156 | SvPOK_only (RETVAL); |
429 | SvPOK_only (RETVAL); |
157 | SvCUR_set (RETVAL, w * h); |
430 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
158 | |
431 | |
159 | dst = SvPVX (RETVAL); |
432 | dst = (guchar *)SvPVX (RETVAL); |
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433 | |
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434 | /* some primitive error distribution + random dithering */ |
160 | |
435 | |
161 | for (y = 0; y < h; y++) |
436 | for (y = 0; y < h; y++) |
162 | { |
437 | { |
163 | /* use a very primitive form of error distribution. */ |
438 | guchar *p = src + y * sstr; |
164 | int er = 0, eg = 0, eb = 0; |
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165 | |
439 | |
166 | for (x = 0; x < w; x++) |
440 | for (x = 0; x < w; x += 2) |
167 | { |
441 | { |
168 | int r, g, b; |
442 | unsigned int r, g, b, h, s, v, H, V1, V2; |
169 | guchar *p = src + x * bpp + y * sstr; |
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170 | |
443 | |
171 | r = ((p[0] + er) * 7 + 128) / 255; |
444 | if (bpp == 3) |
172 | g = ((p[1] + eg) * 7 + 128) / 255; |
445 | r = *p++, g = *p++, b = *p++; |
173 | b = ((p[2] + eb) * 3 + 128) / 255; |
446 | else if (bpp == 1) |
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447 | r = g = b = *p++; |
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448 | else |
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449 | abort (); |
174 | |
450 | |
175 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
451 | rgb_to_hsv (r, g, b, &h, &s, &v); |
176 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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177 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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178 | |
452 | |
179 | er += p[0] - (r * 255 + 4) / 7; |
453 | H = (h * 15 / 255) << 4; |
180 | eg += p[1] - (g * 255 + 4) / 7; |
454 | V1 = v; |
181 | eb += p[2] - (b * 255 + 2) / 3; |
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182 | |
455 | |
183 | *dst++ = r << 5 | g << 2 | b; |
456 | if (bpp == 3) |
|
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457 | r = *p++, g = *p++, b = *p++; |
|
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458 | else if (bpp == 1) |
|
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459 | r = g = b = *p++; |
|
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460 | else |
|
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461 | abort (); |
|
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462 | |
|
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463 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
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464 | |
|
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465 | H |= h * 15 / 255; |
|
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466 | V2 = v; |
|
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467 | |
|
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468 | *dst++ = H; |
|
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469 | *dst++ = V1; |
|
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470 | *dst++ = V2; |
184 | } |
471 | } |
185 | } |
472 | } |
186 | } |
473 | } |
187 | OUTPUT: |
474 | OUTPUT: |
188 | RETVAL |
475 | RETVAL |
189 | |
476 | |
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477 | SV * |
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478 | hv84_to_av (unsigned char *hv84) |
|
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479 | CODE: |
|
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480 | { |
|
|
481 | int i = 72 / 3; |
|
|
482 | AV *av = newAV (); |
|
|
483 | |
|
|
484 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
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485 | while (i--) |
|
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486 | { |
|
|
487 | int h = *hv84++; |
|
|
488 | int v1 = *hv84++; |
|
|
489 | int v2 = *hv84++; |
|
|
490 | |
|
|
491 | av_push (av, newSViv (v1)); |
|
|
492 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
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493 | av_push (av, newSViv (v2)); |
|
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494 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
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495 | } |
|
|
496 | } |
|
|
497 | OUTPUT: |
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498 | RETVAL |
|
|
499 | |
|
|
500 | ############################################################################# |
|
|
501 | |
190 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
502 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
191 | |
503 | |
192 | void |
504 | SV * |
193 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
505 | make_histograms (SV *ar) |
194 | CODE: |
506 | CODE: |
195 | { |
507 | { |
196 | int w = gdk_pixbuf_get_width (pb); |
508 | int i; |
197 | int h = gdk_pixbuf_get_height (pb); |
509 | AV *av, *result; |
198 | int x, y, i; |
|
|
199 | guchar *dst; |
|
|
200 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
|
|
201 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
202 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
203 | |
510 | |
204 | a85_init (); |
511 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
512 | croak ("Not an array ref as first argument to make_histogram"); |
205 | |
513 | |
206 | for (y = 0; y < h; y++) |
514 | av = (AV *) SvRV (ar); |
207 | for (x = 0; x < w; x++) |
515 | result = newAV (); |
|
|
516 | |
|
|
517 | for (i = 0; i <= av_len (av); ++i) |
|
|
518 | { |
|
|
519 | const int HISTSIZE = 64; |
|
|
520 | |
|
|
521 | int j; |
|
|
522 | SV *sv = *av_fetch (av, i, 1); |
|
|
523 | STRLEN len; |
|
|
524 | char *buf = SvPVbyte (sv, len); |
|
|
525 | |
|
|
526 | int tmphist[HISTSIZE]; |
|
|
527 | float *hist; |
|
|
528 | |
|
|
529 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
530 | SvPOK_on (histsv); |
|
|
531 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
532 | hist = (float *)SvPVX (histsv); |
|
|
533 | |
|
|
534 | Zero (tmphist, sizeof (tmphist), char); |
|
|
535 | |
|
|
536 | for (j = len; j--; ) |
|
|
537 | { |
|
|
538 | unsigned int idx |
|
|
539 | = ((*buf & 0xc0) >> 2) |
|
|
540 | | ((*buf & 0x18) >> 1) |
|
|
541 | | (*buf & 0x03); |
|
|
542 | |
|
|
543 | ++tmphist[idx]; |
|
|
544 | ++buf; |
|
|
545 | } |
|
|
546 | |
208 | for (i = 0; i < 3; i++) |
547 | for (j = 0; j < HISTSIZE; ++j) |
209 | a85_push (fp, src [x * bpp + y * sstr + i]); |
548 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
210 | |
549 | |
211 | a85_finish (fp); |
550 | av_push (result, histsv); |
212 | } |
551 | } |
213 | |
552 | |
|
|
553 | RETVAL = newRV_noinc ((SV *)result); |
|
|
554 | } |
|
|
555 | OUTPUT: |
|
|
556 | RETVAL |
214 | |
557 | |
215 | |
558 | |
216 | |
|
|