| 1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
| 2 | #include "perl.h" |
2 | #include "perl.h" |
| 3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
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4 | |
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5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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6 | |
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7 | #include <gperl.h> |
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8 | #include <gtk2perl.h> |
| 4 | |
9 | |
| 5 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
| 6 | |
11 | |
| 7 | PROTOTYPES: ENABLE |
12 | PROTOTYPES: ENABLE |
| 8 | |
13 | |
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14 | GdkPixbuf_noinc * |
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15 | transpose (GdkPixbuf *pb) |
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16 | CODE: |
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17 | { |
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18 | int w = gdk_pixbuf_get_width (pb); |
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19 | int h = gdk_pixbuf_get_height (pb); |
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20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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21 | int x, y, i; |
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22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 9 | |
24 | |
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25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
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26 | |
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27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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29 | |
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30 | for (y = 0; y < h; y++) |
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31 | for (x = 0; x < w; x++) |
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32 | for (i = 0; i < bpp; i++) |
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33 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
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34 | } |
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35 | OUTPUT: |
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36 | RETVAL |
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37 | |
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38 | GdkPixbuf_noinc * |
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39 | flop (GdkPixbuf *pb) |
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40 | CODE: |
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41 | { |
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42 | int w = gdk_pixbuf_get_width (pb); |
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43 | int h = gdk_pixbuf_get_height (pb); |
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44 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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45 | int x, y, i; |
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46 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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47 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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48 | |
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49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
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50 | |
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51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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53 | |
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54 | for (y = 0; y < h; y++) |
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55 | for (x = 0; x < w; x++) |
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56 | for (i = 0; i < bpp; i++) |
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57 | dst[(w - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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58 | } |
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59 | OUTPUT: |
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60 | RETVAL |
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61 | |
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62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
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63 | |
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64 | GdkPixbuf_noinc * |
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65 | p7_to_pb (int w, int h, guchar *src) |
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66 | CODE: |
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67 | { |
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68 | int x, y; |
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69 | guchar *dst, *d; |
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70 | int dstr; |
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71 | |
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72 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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73 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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75 | |
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76 | for (y = 0; y < h; y++) |
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77 | for (d = dst + y * dstr, x = 0; x < w; x++) |
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78 | { |
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79 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
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80 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
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81 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
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82 | |
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83 | src++; |
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84 | } |
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85 | } |
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86 | OUTPUT: |
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87 | RETVAL |
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88 | |
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89 | SV * |
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90 | pb_to_p7 (GdkPixbuf *pb) |
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91 | CODE: |
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92 | { |
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93 | int w = gdk_pixbuf_get_width (pb); |
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94 | int h = gdk_pixbuf_get_height (pb); |
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95 | int x, y; |
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96 | guchar *dst; |
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97 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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98 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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99 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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100 | |
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101 | RETVAL = newSV (w * h); |
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102 | SvPOK_only (RETVAL); |
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103 | SvCUR_set (RETVAL, w * h); |
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104 | |
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105 | dst = SvPVX (RETVAL); |
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106 | |
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107 | for (y = 0; y < h; y++) |
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108 | { |
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109 | /* use a very primitive form of error distribution. */ |
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110 | int er = 0, eg = 0, eb = 0; |
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111 | |
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112 | for (x = 0; x < w; x++) |
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113 | { |
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114 | int r, g, b; |
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115 | guchar *p = src + x * bpp + y * sstr; |
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116 | |
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117 | r = ((p[0] + er) * 7 + 128) / 255; |
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118 | g = ((p[1] + eg) * 7 + 128) / 255; |
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119 | b = ((p[2] + eb) * 3 + 128) / 255; |
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120 | |
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121 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
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122 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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123 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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124 | |
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125 | er += p[0] - (r * 255 + 4) / 7; |
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126 | eg += p[1] - (g * 255 + 4) / 7; |
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127 | eb += p[2] - (b * 255 + 2) / 3; |
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128 | |
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129 | *dst++ = r << 5 | g << 2 | b; |
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130 | } |
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131 | } |
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132 | } |
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133 | OUTPUT: |
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134 | RETVAL |
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135 | |
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136 | |
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137 | |
