| … | |
… | |
| 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 | |
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10 | #define IW 80 |
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11 | |
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12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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13 | |
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14 | #define LINELENGTH 240 |
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15 | |
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16 | #define ELLIPSIS "\xe2\x80\xa6" |
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17 | |
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18 | static guint32 a85_val; |
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19 | static guint a85_cnt; |
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20 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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21 | |
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22 | static void |
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23 | a85_init (void) |
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24 | { |
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25 | a85_cnt = 4; |
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26 | a85_ptr = a85_buf; |
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27 | } |
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28 | |
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29 | static void |
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30 | a85_push (PerlIO *fp, guchar c) |
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31 | { |
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32 | a85_val = a85_val << 8 | c; |
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33 | |
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34 | if (!--a85_cnt) |
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35 | { |
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36 | a85_cnt = 4; |
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37 | if (a85_val) |
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38 | { |
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39 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
|
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40 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
|
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41 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
|
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42 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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43 | a85_ptr[0] = (a85_val ) + 33; |
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44 | |
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45 | a85_ptr += 5; |
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46 | } |
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47 | else |
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48 | *a85_ptr++ = 'z'; |
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49 | |
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50 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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51 | { |
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52 | *a85_ptr++ = '\n'; |
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53 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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54 | a85_ptr = a85_buf; |
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55 | } |
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56 | } |
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57 | |
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58 | } |
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59 | |
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60 | static void |
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61 | a85_finish (PerlIO *fp) |
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62 | { |
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63 | while (a85_cnt != 4) |
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64 | a85_push (fp, 0); |
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65 | |
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66 | *a85_ptr++ = '~'; // probably buggy end-marker |
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67 | *a85_ptr++ = '>'; // probably buggy end-marker |
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68 | *a85_ptr++ = '\n'; |
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69 | |
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70 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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71 | } |
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72 | |
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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 | ///////////////////////////////////////////////////////////////////////////// |
|
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101 | |
| 10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
| 11 | |
103 | |
| 12 | PROTOTYPES: ENABLE |
104 | PROTOTYPES: ENABLE |
| 13 | |
105 | |
| 14 | GdkPixbuf * |
106 | GdkPixbuf_noinc * |
| 15 | transpose (GdkPixbuf *pb) |
107 | transpose (GdkPixbuf *pb) |
| 16 | CODE: |
108 | CODE: |
| 17 | { |
109 | { |
| 18 | int w = gdk_pixbuf_get_width (pb); |
110 | int w = gdk_pixbuf_get_width (pb); |
| 19 | int h = gdk_pixbuf_get_height (pb); |
111 | int h = gdk_pixbuf_get_height (pb); |
| 20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
112 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 21 | int x, y, i; |
113 | int x, y, i; |
| 22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
114 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
| 23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
115 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 24 | |
116 | |
| 25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
117 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
| 26 | |
118 | |
| 27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
119 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
120 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 29 | |
121 | |
| 30 | for (x = 0; x < w; x++) |
|
|
| 31 | for (y = 0; y < h; y++) |
122 | for (y = 0; y < h; y++) |
|
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123 | for (x = 0; x < w; x++) |
| 32 | for (i = 0; i < bpp; i++) |
124 | for (i = 0; i < bpp; i++) |
| 33 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
125 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
| 34 | } |
126 | } |
| 35 | OUTPUT: |
127 | OUTPUT: |
| 36 | RETVAL |
128 | RETVAL |
| 37 | |
129 | |
| 38 | GdkPixbuf * |
130 | GdkPixbuf_noinc * |
| 39 | flop (GdkPixbuf *pb) |
131 | flop (GdkPixbuf *pb) |
| 40 | CODE: |
132 | CODE: |
| 41 | { |
133 | { |
| 42 | int w = gdk_pixbuf_get_width (pb); |
134 | int w = gdk_pixbuf_get_width (pb); |
| 43 | int h = gdk_pixbuf_get_height (pb); |
135 | int h = gdk_pixbuf_get_height (pb); |
| 44 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
136 | int bpp = gdk_pixbuf_get_n_channels (pb); |
| 45 | int x, y, i; |
137 | int x, y, i; |
| 46 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
138 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
| 47 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
139 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 48 | |
140 | |
| 49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
141 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
| 50 | |
142 | |
| 51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
143 | dst = gdk_pixbuf_get_pixels (RETVAL); |
| 52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
144 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 53 | |
145 | |
| 54 | for (x = 0; x < w; x++) |
|
|
| 55 | for (y = 0; y < h; y++) |
146 | for (y = 0; y < h; y++) |
|
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147 | for (x = 0; x < w; x++) |
| 56 | for (i = 0; i < bpp; i++) |
148 | for (i = 0; i < bpp; i++) |
| 57 | dst[(w - x) * bpp + y * dstr + i] = src[x *bpp + y * sstr + i]; |
149 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
| 58 | } |
150 | } |
| 59 | OUTPUT: |
151 | OUTPUT: |
| 60 | RETVAL |
152 | RETVAL |
|
|
153 | |
|
|
154 | ############################################################################# |
| 61 | |
155 | |
| 62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
156 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
| 63 | |
157 | |
| 64 | GdkPixbuf * |
158 | GdkPixbuf_noinc * |
| 65 | p7_to_pb (int w, int h, guchar *src) |
159 | p7_to_pb (int w, int h, guchar *src) |
| 66 | CODE: |
160 | CODE: |
| 67 | { |
161 | { |
| 68 | int x, y; |
162 | int x, y; |
| 69 | guchar *dst, *d; |
163 | guchar *dst, *d; |
| … | |
… | |
| 74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
168 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
| 75 | |
169 | |
| 76 | for (y = 0; y < h; y++) |
170 | for (y = 0; y < h; y++) |
| 77 | for (d = dst + y * dstr, x = 0; x < w; x++) |
171 | for (d = dst + y * dstr, x = 0; x < w; x++) |
| 78 | { |
172 | { |
| 79 | *d++ = ((*src >> 5) & 7) * 255 / 7; |
173 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
| 80 | *d++ = ((*src >> 2) & 7) * 255 / 7; |
174 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
| 81 | *d++ = ((*src >> 0) & 3) * 255 / 3; |
175 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
| 82 | |
176 | |
| 83 | src++; |
177 | src++; |
| 84 | } |
178 | } |
| 85 | } |
179 | } |
| 86 | OUTPUT: |
180 | OUTPUT: |
| 87 | RETVAL |
181 | RETVAL |
| 88 | |
182 | |
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183 | SV * |
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184 | pb_to_p7 (GdkPixbuf *pb) |
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185 | CODE: |
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186 | { |
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187 | int w = gdk_pixbuf_get_width (pb); |
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188 | int h = gdk_pixbuf_get_height (pb); |
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189 | int x, y; |
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190 | guchar *dst; |
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191 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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192 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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193 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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194 | int Er[IW], Eg[IW], Eb[IW]; |
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195 | int seed = 77; |
| 89 | |
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); |
| 90 | |
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 | ############################################################################# |
|
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242 | |
|
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243 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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244 | |
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245 | void |
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246 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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247 | CODE: |
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248 | { |
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249 | int w = gdk_pixbuf_get_width (pb); |
|
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250 | int h = gdk_pixbuf_get_height (pb); |
|
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251 | int x, y, i; |
|
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252 | guchar *dst; |
|
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253 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
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254 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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255 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
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256 | |
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257 | a85_init (); |
|
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258 | |
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259 | for (y = 0; y < h; y++) |
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260 | for (x = 0; x < w; x++) |
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261 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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262 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
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263 | |
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264 | a85_finish (fp); |
|
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265 | } |
|
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266 | |
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267 | void |
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268 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
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269 | CODE: |
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270 | { |
|
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271 | int w = gdk_pixbuf_get_width (pb); |
|
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272 | int h = gdk_pixbuf_get_height (pb); |
|
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273 | int x, y, i; |
|
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274 | guchar *dst; |
|
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275 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
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276 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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277 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
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278 | |
|
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279 | for (y = 0; y < h; y++) |
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280 | for (x = 0; x < w; x++) |
|
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281 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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282 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
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283 | } |
|
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284 | |
|
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285 | ############################################################################# |
|
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286 | |
|
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287 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
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288 | |
|
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289 | SV * |
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290 | pb_to_hv84 (GdkPixbuf *pb) |
|
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291 | CODE: |
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292 | { |
|
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293 | int w = gdk_pixbuf_get_width (pb); |
|
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294 | int h = gdk_pixbuf_get_height (pb); |
|
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295 | int x, y; |
|
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296 | guchar *dst; |
|
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297 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
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298 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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299 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
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300 | |
|
|
301 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
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302 | SvPOK_only (RETVAL); |
|
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303 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
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304 | |
|
|
305 | dst = SvPVX (RETVAL); |
|
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306 | |
|
|
307 | /* some primitive error distribution + random dithering */ |
|
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308 | |
|
|
309 | for (y = 0; y < h; y++) |
|
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310 | { |
|
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311 | guchar *p = src + y * sstr; |
|
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312 | |
|
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313 | for (x = 0; x < w; x += 2) |
|
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314 | { |
|
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315 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
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316 | |
|
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317 | if (bpp == 3) |
|
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318 | r = *p++, g = *p++, b = *p++; |
|
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319 | else if (bpp == 1) |
|
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320 | r = g = b = *p++; |
|
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321 | else |
|
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322 | abort (); |
|
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323 | |
|
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324 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
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325 | |
|
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326 | H = (h * 15 / 255) << 4; |
|
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327 | V1 = v; |
|
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328 | |
|
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329 | if (bpp == 3) |
|
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330 | r = *p++, g = *p++, b = *p++; |
|
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331 | else if (bpp == 1) |
|
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332 | r = g = b = *p++; |
|
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333 | else |
|
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334 | abort (); |
|
|
335 | |
|
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336 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
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337 | |
|
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338 | H |= h * 15 / 255; |
|
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339 | V2 = v; |
|
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340 | |
|
|
341 | *dst++ = H; |
|
|
342 | *dst++ = V1; |
|
|
343 | *dst++ = V2; |
|
|
344 | } |
|
|
345 | } |
|
|
346 | } |
|
|
347 | OUTPUT: |
|
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348 | RETVAL |
|
|
349 | |
|
|
350 | SV * |
|
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351 | hv84_to_av (unsigned char *hv84) |
|
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352 | CODE: |
|
|
353 | { |
|
|
354 | int i = 72 / 3; |
|
|
355 | AV *av = newAV (); |
|
|
356 | |
|
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357 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
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358 | while (i--) |
|
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359 | { |
|
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360 | int h = *hv84++; |
|
|
361 | int v1 = *hv84++; |
|
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362 | int v2 = *hv84++; |
|
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363 | |
|
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364 | av_push (av, newSViv (v1)); |
|
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365 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
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366 | av_push (av, newSViv (v2)); |
|
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367 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
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368 | } |
|
|
369 | } |
|
|
370 | OUTPUT: |
|
|
371 | RETVAL |
|
|
372 | |
|
|
373 | |
|
|
374 | |
