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Comparing CV/CV.xs (file contents):
Revision 1.4 by root, Sat Nov 8 18:22:21 2003 UTC vs.
Revision 1.7 by root, Wed Nov 12 23:54:54 2003 UTC

… …
5#include <gdk-pixbuf/gdk-pixbuf.h> 5#include <gdk-pixbuf/gdk-pixbuf.h>
6 6
7#include <gperl.h> 7#include <gperl.h>
8#include <gtk2perl.h> 8#include <gtk2perl.h>
9 9
10#define IW 80
11
12#define RAND (seed = (seed + 7141) * 54773 % 134456)
13
14#define LINELENGTH 240
15
16#define ELLIPSIS "\xe2\x80\xa6"
17
10static guint32 a85_val; 18static guint32 a85_val;
11static guint a85_cnt; 19static guint a85_cnt;
12static guchar a85_buf[80], *a85_ptr; 20static guchar a85_buf[LINELENGTH], *a85_ptr;
13 21
14static void 22static void
15a85_init (void) 23a85_init (void)
16{ 24{
17 a85_cnt = 4; 25 a85_cnt = 4;
… …
59 *a85_ptr++ = '\n'; 67 *a85_ptr++ = '\n';
60 68
61 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 69 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
62} 70}
63 71
72/////////////////////////////////////////////////////////////////////////////
73
64MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow 74MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow
65 75
66PROTOTYPES: ENABLE 76PROTOTYPES: ENABLE
67 77
68GdkPixbuf_noinc * 78GdkPixbuf_noinc *
69transpose (GdkPixbuf *pb) 79transpose (GdkPixbuf *pb)
70 CODE: 80 CODE:
71{ 81{
72 int w = gdk_pixbuf_get_width (pb); 82 int w = gdk_pixbuf_get_width (pb);
73 int h = gdk_pixbuf_get_height (pb); 83 int h = gdk_pixbuf_get_height (pb);
74 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 84 int bpp = gdk_pixbuf_get_n_channels (pb);
75 int x, y, i; 85 int x, y, i;
76 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 86 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
77 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 87 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
78 88
79 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 89 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
… …
93flop (GdkPixbuf *pb) 103flop (GdkPixbuf *pb)
94 CODE: 104 CODE:
95{ 105{
96 int w = gdk_pixbuf_get_width (pb); 106 int w = gdk_pixbuf_get_width (pb);
97 int h = gdk_pixbuf_get_height (pb); 107 int h = gdk_pixbuf_get_height (pb);
98 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 108 int bpp = gdk_pixbuf_get_n_channels (pb);
99 int x, y, i; 109 int x, y, i;
100 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 110 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
101 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 111 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
102 112
103 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 113 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
… …
110 for (i = 0; i < bpp; i++) 120 for (i = 0; i < bpp; i++)
111 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; 121 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
112} 122}
113 OUTPUT: 123 OUTPUT:
114 RETVAL 124 RETVAL
125
126#############################################################################
115 127
116MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 128MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
117 129
118GdkPixbuf_noinc * 130GdkPixbuf_noinc *
119p7_to_pb (int w, int h, guchar *src) 131p7_to_pb (int w, int h, guchar *src)
… …
146{ 158{
147 int w = gdk_pixbuf_get_width (pb); 159 int w = gdk_pixbuf_get_width (pb);
148 int h = gdk_pixbuf_get_height (pb); 160 int h = gdk_pixbuf_get_height (pb);
149 int x, y; 161 int x, y;
150 guchar *dst; 162 guchar *dst;
151 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 163 int bpp = gdk_pixbuf_get_n_channels (pb);
152 guchar *src = gdk_pixbuf_get_pixels (pb); 164 guchar *src = gdk_pixbuf_get_pixels (pb);
153 int sstr = gdk_pixbuf_get_rowstride (pb); 165 int sstr = gdk_pixbuf_get_rowstride (pb);
166 int Er[IW], Eg[IW], Eb[IW];
167 int seed = 77;
154 168
155 RETVAL = newSV (w * h); 169 RETVAL = newSV (w * h);
156 SvPOK_only (RETVAL); 170 SvPOK_only (RETVAL);
157 SvCUR_set (RETVAL, w * h); 171 SvCUR_set (RETVAL, w * h);
158 172
159 dst = SvPVX (RETVAL); 173 dst = SvPVX (RETVAL);
160 174
175 memset (Er, 0, sizeof (int) * IW);
176 memset (Eg, 0, sizeof (int) * IW);
177 memset (Eb, 0, sizeof (int) * IW);
178
179 /* some primitive error distribution + random dithering */
180
161 for (y = 0; y < h; y++) 181 for (y = 0; y < h; y++)
162 { 182 {
163 /* use a very primitive form of error distribution. */
164 int er = 0, eg = 0, eb = 0; 183 int er = 0, eg = 0, eb = 0;
165 184
166 for (x = 0; x < w; x++) 185 for (x = 0; x < w; x++)
167 { 186 {
168 int r, g, b; 187 int r, g, b;
169 guchar *p = src + x * bpp + y * sstr; 188 guchar *p = src + x * bpp + y * sstr;
170 189
171 r = ((p[0] + er) * 7 + 128) / 255; 190 r = ((p[0] + er + Er[x]) * 7 + 128) / 255;
172 g = ((p[1] + eg) * 7 + 128) / 255; 191 g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;
173 b = ((p[2] + eb) * 3 + 128) / 255; 192 b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;
174 193
175 r = r > 7 ? 7 : r < 0 ? 0 : r; 194 r = r > 7 ? 7 : r < 0 ? 0 : r;
176 g = g > 7 ? 7 : g < 0 ? 0 : g; 195 g = g > 7 ? 7 : g < 0 ? 0 : g;
177 b = b > 3 ? 3 : b < 0 ? 0 : b; 196 b = b > 3 ? 3 : b < 0 ? 0 : b;
178 197
179 er += p[0] - (r * 255 + 4) / 7; 198 er += p[0] - (r * 255 + 4) / 7;
180 eg += p[1] - (g * 255 + 4) / 7; 199 eg += p[1] - (g * 255 + 4) / 7;
181 eb += p[2] - (b * 255 + 2) / 3; 200 eb += p[2] - (b * 255 + 2) / 3;
182 201
202 Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;
203 Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;
204 Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;
205
183 *dst++ = r << 5 | g << 2 | b; 206 *dst++ = r << 5 | g << 2 | b;
184 } 207 }
185 } 208 }
186} 209}
187 OUTPUT: 210 OUTPUT:
188 RETVAL 211 RETVAL
189 212
213#############################################################################
214
190MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript 215MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
191 216
192void 217void
193dump_pb (PerlIO *fp, GdkPixbuf *pb) 218dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
194 CODE: 219 CODE:
195{ 220{
196 int w = gdk_pixbuf_get_width (pb); 221 int w = gdk_pixbuf_get_width (pb);
197 int h = gdk_pixbuf_get_height (pb); 222 int h = gdk_pixbuf_get_height (pb);
198 int x, y, i; 223 int x, y, i;
199 guchar *dst; 224 guchar *dst;
200 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 225 int bpp = gdk_pixbuf_get_n_channels (pb);
201 guchar *src = gdk_pixbuf_get_pixels (pb); 226 guchar *src = gdk_pixbuf_get_pixels (pb);
202 int sstr = gdk_pixbuf_get_rowstride (pb); 227 int sstr = gdk_pixbuf_get_rowstride (pb);
203 228
204 a85_init (); 229 a85_init ();
205 230
206 for (y = 0; y < h; y++) 231 for (y = 0; y < h; y++)
207 for (x = 0; x < w; x++) 232 for (x = 0; x < w; x++)
208 for (i = 0; i < 3; i++) 233 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
209 a85_push (fp, src [x * bpp + y * sstr + i]); 234 a85_push (fp, src [x * bpp + y * sstr + i]);
210 235
211 a85_finish (fp); 236 a85_finish (fp);
212} 237}
213 238
239void
240dump_binary (PerlIO *fp, GdkPixbuf *pb)
241 CODE:
242{
243 int w = gdk_pixbuf_get_width (pb);
244 int h = gdk_pixbuf_get_height (pb);
245 int x, y, i;
246 guchar *dst;
247 int bpp = gdk_pixbuf_get_n_channels (pb);
248 guchar *src = gdk_pixbuf_get_pixels (pb);
249 int sstr = gdk_pixbuf_get_rowstride (pb);
214 250
251 for (y = 0; y < h; y++)
252 for (x = 0; x < w; x++)
253 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
254 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
255}
215 256
216 257
258
259

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