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 |
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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 | |
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144 | GdkPixbuf_noinc * |
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145 | dealpha_expose (GdkPixbuf *pb) |
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146 | CODE: |
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147 | { |
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148 | int w = gdk_pixbuf_get_width (pb); |
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149 | int h = gdk_pixbuf_get_height (pb); |
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150 | fprintf (stderr, "new %d %d\n", w, h); |
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151 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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152 | int x, y, i; |
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153 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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154 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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155 | |
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156 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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157 | |
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158 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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159 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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160 | |
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161 | for (x = 0; x < w; x++) |
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162 | for (y = 0; y < h; y++) |
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163 | for (i = 0; i < 3; i++) |
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164 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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165 | } |
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166 | OUTPUT: |
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167 | RETVAL |
67 | |
168 | |
68 | GdkPixbuf_noinc * |
169 | GdkPixbuf_noinc * |
69 | transpose (GdkPixbuf *pb) |
170 | transpose (GdkPixbuf *pb) |
70 | CODE: |
171 | CODE: |
71 | { |
172 | { |
72 | int w = gdk_pixbuf_get_width (pb); |
173 | int w = gdk_pixbuf_get_width (pb); |
73 | int h = gdk_pixbuf_get_height (pb); |
174 | int h = gdk_pixbuf_get_height (pb); |
74 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
175 | int bpp = gdk_pixbuf_get_n_channels (pb); |
75 | int x, y, i; |
176 | int x, y, i; |
76 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
177 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
77 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
178 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
78 | |
179 | |
79 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
180 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
… | |
… | |
93 | flop (GdkPixbuf *pb) |
194 | flop (GdkPixbuf *pb) |
94 | CODE: |
195 | CODE: |
95 | { |
196 | { |
96 | int w = gdk_pixbuf_get_width (pb); |
197 | int w = gdk_pixbuf_get_width (pb); |
97 | int h = gdk_pixbuf_get_height (pb); |
198 | int h = gdk_pixbuf_get_height (pb); |
98 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
199 | int bpp = gdk_pixbuf_get_n_channels (pb); |
99 | int x, y, i; |
200 | int x, y, i; |
100 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
201 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
101 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
202 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
102 | |
203 | |
103 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
204 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
… | |
… | |
111 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
212 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
112 | } |
213 | } |
113 | OUTPUT: |
214 | OUTPUT: |
114 | RETVAL |
215 | RETVAL |
115 | |
216 | |
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217 | GdkPixbuf_noinc * |
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218 | load_jpeg (SV *path, int thumbnail=0) |
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219 | CODE: |
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220 | { |
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221 | struct jpeg_decompress_struct cinfo; |
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222 | struct jpg_err_mgr jerr; |
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223 | guchar *data; |
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224 | int rs; |
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225 | FILE *fp; |
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226 | volatile GdkPixbuf *pb = 0; |
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227 | gchar *filename; |
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228 | |
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229 | RETVAL = 0; |
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230 | |
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231 | filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0); |
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232 | fp = fopen (filename, "rb"); |
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233 | g_free (filename); |
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234 | |
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235 | if (!fp) |
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236 | XSRETURN_UNDEF; |
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237 | |
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238 | cinfo.err = jpeg_std_error (&jerr.err); |
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239 | |
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240 | jerr.err.error_exit = cv_error_exit; |
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241 | jerr.err.output_message = cv_error_output; |
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242 | |
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243 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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244 | { |
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245 | fclose (fp); |
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246 | jpeg_destroy_decompress (&cinfo); |
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247 | |
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248 | if (pb) |
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249 | g_object_unref ((gpointer)pb); |
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250 | |
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251 | XSRETURN_UNDEF; |
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252 | } |
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253 | |
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254 | jpeg_create_decompress (&cinfo); |
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255 | |
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256 | jpeg_stdio_src (&cinfo, fp); |
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257 | jpeg_read_header (&cinfo, TRUE); |
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258 | |
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259 | cinfo.dct_method = JDCT_DEFAULT; |
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260 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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261 | cinfo.do_block_smoothing = FALSE; |
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262 | cinfo.out_color_space = JCS_RGB; |
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263 | cinfo.quantize_colors = FALSE; |
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264 | |
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265 | cinfo.scale_num = 1; |
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266 | cinfo.scale_denom = 1; |
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267 | |
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268 | jpeg_calc_output_dimensions (&cinfo); |
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269 | |
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270 | if (thumbnail) |
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271 | { |
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272 | cinfo.dct_method = JDCT_FASTEST; |
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273 | cinfo.do_fancy_upsampling = FALSE; |
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274 | |
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275 | while (cinfo.scale_denom < 8 |
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276 | && cinfo.output_width >= IW*4 |
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277 | && cinfo.output_height >= IH*4) |
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278 | { |
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279 | cinfo.scale_denom <<= 1; |
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280 | jpeg_calc_output_dimensions (&cinfo); |
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281 | } |
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282 | } |
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283 | |
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284 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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285 | if (!RETVAL) |
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286 | longjmp (jerr.setjmp_buffer, 2); |
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287 | |
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288 | data = gdk_pixbuf_get_pixels (RETVAL); |
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289 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
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290 | |
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291 | if (cinfo.output_components != 3) |
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292 | longjmp (jerr.setjmp_buffer, 3); |
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293 | |
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294 | jpeg_start_decompress (&cinfo); |
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295 | |
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296 | while (cinfo.output_scanline < cinfo.output_height) |
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297 | { |
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298 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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299 | JSAMPROW rp[4]; |
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300 | |
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301 | rp [0] = data + cinfo.output_scanline * rs; |
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302 | rp [1] = (guchar *)rp [0] + rs; |
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303 | rp [2] = (guchar *)rp [1] + rs; |
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304 | rp [3] = (guchar *)rp [2] + rs; |
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305 | |
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306 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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307 | } |
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308 | |
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309 | jpeg_finish_decompress (&cinfo); |
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310 | fclose (fp); |
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311 | jpeg_destroy_decompress (&cinfo); |
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312 | } |
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313 | OUTPUT: |
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314 | RETVAL |
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315 | |
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316 | ############################################################################# |
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317 | |
116 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
318 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
117 | |
319 | |
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320 | SV * |
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321 | foldcase (SV *pathsv) |
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322 | PROTOTYPE: $ |
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323 | CODE: |
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324 | { |
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325 | STRLEN plen; |
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326 | U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
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327 | U8 *pend = path + plen; |
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328 | U8 dst [plen * 6 * 3], *dstp = dst; |
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329 | |
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330 | while (path < pend) |
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331 | { |
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332 | U8 ch = *path; |
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333 | |
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334 | if (ch >= 'a' && ch <= 'z') |
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335 | *dstp++ = *path++; |
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336 | else if (ch >= '0' && ch <= '9') |
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337 | { |
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338 | STRLEN el, nl = 0; |
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339 | while (*path >= '0' && *path <= '9' && path < pend) |
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340 | path++, nl++; |
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341 | |
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342 | for (el = nl; el < 6; el++) |
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343 | *dstp++ = '0'; |
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344 | |
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345 | memcpy (dstp, path - nl, nl); |
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346 | dstp += nl; |
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347 | } |
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348 | else |
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349 | { |
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350 | STRLEN cl; |
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351 | to_utf8_fold (path, dstp, &cl); |
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352 | dstp += cl; |
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353 | path += is_utf8_char (path); |
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354 | } |
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355 | } |
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356 | |
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357 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
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358 | } |
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359 | OUTPUT: |
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360 | RETVAL |
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361 | |
118 | GdkPixbuf_noinc * |
362 | GdkPixbuf_noinc * |
119 | p7_to_pb (int w, int h, guchar *src) |
363 | p7_to_pb (int w, int h, SV *src_sv) |
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364 | PROTOTYPE: @ |
120 | CODE: |
365 | CODE: |
121 | { |
366 | { |
122 | int x, y; |
367 | int x, y; |
123 | guchar *dst, *d; |
368 | guchar *dst, *d; |
124 | int dstr; |
369 | int dstr; |
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370 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
125 | |
371 | |
126 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
372 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
127 | dst = gdk_pixbuf_get_pixels (RETVAL); |
373 | dst = gdk_pixbuf_get_pixels (RETVAL); |
128 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
374 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
129 | |
375 | |
… | |
… | |
146 | { |
392 | { |
147 | int w = gdk_pixbuf_get_width (pb); |
393 | int w = gdk_pixbuf_get_width (pb); |
148 | int h = gdk_pixbuf_get_height (pb); |
394 | int h = gdk_pixbuf_get_height (pb); |
149 | int x, y; |
395 | int x, y; |
150 | guchar *dst; |
396 | guchar *dst; |
151 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
397 | int bpp = gdk_pixbuf_get_n_channels (pb); |
152 | guchar *src = gdk_pixbuf_get_pixels (pb); |
398 | guchar *src = gdk_pixbuf_get_pixels (pb); |
153 | int sstr = gdk_pixbuf_get_rowstride (pb); |
399 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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400 | int Er[IW], Eg[IW], Eb[IW]; |
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401 | int seed = 77; |
154 | |
402 | |
155 | RETVAL = newSV (w * h); |
403 | RETVAL = newSV (w * h); |
156 | SvPOK_only (RETVAL); |
404 | SvPOK_only (RETVAL); |
157 | SvCUR_set (RETVAL, w * h); |
405 | SvCUR_set (RETVAL, w * h); |
158 | |
406 | |
159 | dst = SvPVX (RETVAL); |
407 | dst = (guchar *)SvPVX (RETVAL); |
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408 | |
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409 | memset (Er, 0, sizeof (int) * IW); |
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410 | memset (Eg, 0, sizeof (int) * IW); |
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411 | memset (Eb, 0, sizeof (int) * IW); |
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412 | |
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413 | /* some primitive error distribution + random dithering */ |
160 | |
414 | |
161 | for (y = 0; y < h; y++) |
415 | for (y = 0; y < h; y++) |
162 | { |
416 | { |
163 | /* use a very primitive form of error distribution. */ |
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164 | int er = 0, eg = 0, eb = 0; |
417 | int er = 0, eg = 0, eb = 0; |
165 | |
418 | |
166 | for (x = 0; x < w; x++) |
419 | for (x = 0; x < w; x++) |
167 | { |
420 | { |
168 | int r, g, b; |
421 | int r, g, b; |
169 | guchar *p = src + x * bpp + y * sstr; |
422 | guchar *p = src + x * bpp + y * sstr; |
170 | |
423 | |
171 | r = ((p[0] + er) * 7 + 128) / 255; |
424 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
172 | g = ((p[1] + eg) * 7 + 128) / 255; |
425 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
173 | b = ((p[2] + eb) * 3 + 128) / 255; |
426 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
174 | |
427 | |
175 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
428 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
176 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
429 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
177 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
430 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
178 | |
431 | |
179 | er += p[0] - (r * 255 + 4) / 7; |
432 | er += p[0] - (r * 255 + 4) / 7; |
180 | eg += p[1] - (g * 255 + 4) / 7; |
433 | eg += p[1] - (g * 255 + 4) / 7; |
181 | eb += p[2] - (b * 255 + 2) / 3; |
434 | eb += p[2] - (b * 255 + 2) / 3; |
182 | |
435 | |
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436 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
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437 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
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438 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
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439 | |
183 | *dst++ = r << 5 | g << 2 | b; |
440 | *dst++ = r << 5 | g << 2 | b; |
184 | } |
441 | } |
185 | } |
442 | } |
186 | } |
443 | } |
187 | OUTPUT: |
444 | OUTPUT: |
188 | RETVAL |
445 | RETVAL |
189 | |
446 | |
|
|
447 | ############################################################################# |
|
|
448 | |
190 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
449 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
191 | |
450 | |
192 | void |
451 | void |
193 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
452 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
194 | CODE: |
453 | CODE: |
195 | { |
454 | { |
196 | int w = gdk_pixbuf_get_width (pb); |
455 | int w = gdk_pixbuf_get_width (pb); |
197 | int h = gdk_pixbuf_get_height (pb); |
456 | int h = gdk_pixbuf_get_height (pb); |
198 | int x, y, i; |
457 | int x, y, i; |
199 | guchar *dst; |
458 | guchar *dst; |
200 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
459 | int bpp = gdk_pixbuf_get_n_channels (pb); |
201 | guchar *src = gdk_pixbuf_get_pixels (pb); |
460 | guchar *src = gdk_pixbuf_get_pixels (pb); |
202 | int sstr = gdk_pixbuf_get_rowstride (pb); |
461 | int sstr = gdk_pixbuf_get_rowstride (pb); |
203 | |
462 | |
204 | a85_init (); |
463 | a85_init (); |
205 | |
464 | |
206 | for (y = 0; y < h; y++) |
465 | for (y = 0; y < h; y++) |
207 | for (x = 0; x < w; x++) |
466 | for (x = 0; x < w; x++) |
208 | for (i = 0; i < 3; i++) |
467 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
209 | a85_push (fp, src [x * bpp + y * sstr + i]); |
468 | a85_push (fp, src [x * bpp + y * sstr + i]); |
210 | |
469 | |
211 | a85_finish (fp); |
470 | a85_finish (fp); |
212 | } |
471 | } |
213 | |
472 | |
|
|
473 | void |
|
|
474 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
475 | CODE: |
|
|
476 | { |
|
|
477 | int w = gdk_pixbuf_get_width (pb); |
|
|
478 | int h = gdk_pixbuf_get_height (pb); |
|
|
479 | int x, y, i; |
|
|
480 | guchar *dst; |
|
|
481 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
482 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
483 | int sstr = gdk_pixbuf_get_rowstride (pb); |
214 | |
484 | |
|
|
485 | for (y = 0; y < h; y++) |
|
|
486 | for (x = 0; x < w; x++) |
|
|
487 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
488 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
489 | } |
215 | |
490 | |
|
|
491 | ############################################################################# |
216 | |
492 | |
|
|
493 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
494 | |
|
|
495 | SV * |
|
|
496 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
497 | CODE: |
|
|
498 | { |
|
|
499 | int w = gdk_pixbuf_get_width (pb); |
|
|
500 | int h = gdk_pixbuf_get_height (pb); |
|
|
501 | int x, y; |
|
|
502 | guchar *dst; |
|
|
503 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
504 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
505 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
506 | |
|
|
507 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
508 | SvPOK_only (RETVAL); |
|
|
509 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
510 | |
|
|
511 | dst = (guchar *)SvPVX (RETVAL); |
|
|
512 | |
|
|
513 | /* some primitive error distribution + random dithering */ |
|
|
514 | |
|
|
515 | for (y = 0; y < h; y++) |
|
|
516 | { |
|
|
517 | guchar *p = src + y * sstr; |
|
|
518 | |
|
|
519 | for (x = 0; x < w; x += 2) |
|
|
520 | { |
|
|
521 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
522 | |
|
|
523 | if (bpp == 3) |
|
|
524 | r = *p++, g = *p++, b = *p++; |
|
|
525 | else if (bpp == 1) |
|
|
526 | r = g = b = *p++; |
|
|
527 | else |
|
|
528 | abort (); |
|
|
529 | |
|
|
530 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
531 | |
|
|
532 | H = (h * 15 / 255) << 4; |
|
|
533 | V1 = v; |
|
|
534 | |
|
|
535 | if (bpp == 3) |
|
|
536 | r = *p++, g = *p++, b = *p++; |
|
|
537 | else if (bpp == 1) |
|
|
538 | r = g = b = *p++; |
|
|
539 | else |
|
|
540 | abort (); |
|
|
541 | |
|
|
542 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
543 | |
|
|
544 | H |= h * 15 / 255; |
|
|
545 | V2 = v; |
|
|
546 | |
|
|
547 | *dst++ = H; |
|
|
548 | *dst++ = V1; |
|
|
549 | *dst++ = V2; |
|
|
550 | } |
|
|
551 | } |
|
|
552 | } |
|
|
553 | OUTPUT: |
|
|
554 | RETVAL |
|
|
555 | |
|
|
556 | SV * |
|
|
557 | hv84_to_av (unsigned char *hv84) |
|
|
558 | CODE: |
|
|
559 | { |
|
|
560 | int i = 72 / 3; |
|
|
561 | AV *av = newAV (); |
|
|
562 | |
|
|
563 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
564 | while (i--) |
|
|
565 | { |
|
|
566 | int h = *hv84++; |
|
|
567 | int v1 = *hv84++; |
|
|
568 | int v2 = *hv84++; |
|
|
569 | |
|
|
570 | av_push (av, newSViv (v1)); |
|
|
571 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
572 | av_push (av, newSViv (v2)); |
|
|
573 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
574 | } |
|
|
575 | } |
|
|
576 | OUTPUT: |
|
|
577 | RETVAL |
|
|
578 | |
|
|
579 | ############################################################################# |
|
|
580 | |
|
|
581 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
582 | |
|
|
583 | SV * |
|
|
584 | make_histograms (SV *ar) |
|
|
585 | CODE: |
|
|
586 | { |
|
|
587 | int i; |
|
|
588 | AV *av, *result; |
|
|
589 | |
|
|
590 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
591 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
592 | |
|
|
593 | av = (AV *) SvRV (ar); |
|
|
594 | result = newAV (); |
|
|
595 | |
|
|
596 | for (i = 0; i <= av_len (av); ++i) |
|
|
597 | { |
|
|
598 | const int HISTSIZE = 64; |
|
|
599 | |
|
|
600 | int j; |
|
|
601 | SV *sv = *av_fetch (av, i, 1); |
|
|
602 | STRLEN len; |
|
|
603 | char *buf = SvPVbyte (sv, len); |
|
|
604 | |
|
|
605 | int tmphist[HISTSIZE]; |
|
|
606 | float *hist; |
|
|
607 | |
|
|
608 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
609 | SvPOK_on (histsv); |
|
|
610 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
611 | hist = (float *)SvPVX (histsv); |
|
|
612 | |
|
|
613 | Zero (tmphist, sizeof (tmphist), char); |
|
|
614 | |
|
|
615 | for (j = len; j--; ) |
|
|
616 | { |
|
|
617 | unsigned int idx |
|
|
618 | = ((*buf & 0xc0) >> 2) |
|
|
619 | | ((*buf & 0x18) >> 1) |
|
|
620 | | (*buf & 0x03); |
|
|
621 | |
|
|
622 | ++tmphist[idx]; |
|
|
623 | ++buf; |
|
|
624 | } |
|
|
625 | |
|
|
626 | for (j = 0; j < HISTSIZE; ++j) |
|
|
627 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
628 | |
|
|
629 | av_push (result, histsv); |
|
|
630 | } |
|
|
631 | |
|
|
632 | RETVAL = newRV_noinc ((SV *)result); |
|
|
633 | } |
|
|
634 | OUTPUT: |
|
|
635 | RETVAL |
|
|
636 | |
|
|
637 | |