1 | /*****************************************************************************/ |
---|---|
2 | // Copyright 2006 Adobe Systems Incorporated |
3 | // All Rights Reserved. |
4 | // |
5 | // NOTICE: Adobe permits you to use, modify, and distribute this file in |
6 | // accordance with the terms of the Adobe license agreement accompanying it. |
7 | /*****************************************************************************/ |
8 | |
9 | /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_orientation.cpp#1 $ */ |
10 | /* $DateTime: 2012/05/30 13:28:51 $ */ |
11 | /* $Change: 832332 $ */ |
12 | /* $Author: tknoll $ */ |
13 | |
14 | #include "dng_orientation.h" |
15 | |
16 | /*****************************************************************************/ |
17 | |
18 | void dng_orientation::SetTIFF (uint32 tiff) |
19 | { |
20 | |
21 | switch (tiff) |
22 | { |
23 | |
24 | case 1: |
25 | { |
26 | fAdobeOrientation = kNormal; |
27 | break; |
28 | } |
29 | |
30 | case 2: |
31 | { |
32 | fAdobeOrientation = kMirror; |
33 | break; |
34 | } |
35 | |
36 | case 3: |
37 | { |
38 | fAdobeOrientation = kRotate180; |
39 | break; |
40 | } |
41 | |
42 | case 4: |
43 | { |
44 | fAdobeOrientation = kMirror180; |
45 | break; |
46 | } |
47 | |
48 | case 5: |
49 | { |
50 | fAdobeOrientation = kMirror90CCW; |
51 | break; |
52 | } |
53 | |
54 | case 6: |
55 | { |
56 | fAdobeOrientation = kRotate90CW; |
57 | break; |
58 | } |
59 | |
60 | case 7: |
61 | { |
62 | fAdobeOrientation = kMirror90CW; |
63 | break; |
64 | } |
65 | |
66 | case 8: |
67 | { |
68 | fAdobeOrientation = kRotate90CCW; |
69 | break; |
70 | } |
71 | |
72 | case 9: |
73 | { |
74 | fAdobeOrientation = kUnknown; |
75 | break; |
76 | } |
77 | |
78 | default: |
79 | { |
80 | fAdobeOrientation = kNormal; |
81 | } |
82 | |
83 | } |
84 | |
85 | } |
86 | |
87 | /*****************************************************************************/ |
88 | |
89 | uint32 dng_orientation::GetTIFF () const |
90 | { |
91 | |
92 | switch (fAdobeOrientation) |
93 | { |
94 | |
95 | case kNormal: |
96 | { |
97 | return 1; |
98 | } |
99 | |
100 | case kMirror: |
101 | { |
102 | return 2; |
103 | } |
104 | |
105 | case kRotate180: |
106 | { |
107 | return 3; |
108 | } |
109 | |
110 | case kMirror180: |
111 | { |
112 | return 4; |
113 | } |
114 | |
115 | case kMirror90CCW: |
116 | { |
117 | return 5; |
118 | } |
119 | |
120 | case kRotate90CW: |
121 | { |
122 | return 6; |
123 | } |
124 | |
125 | case kMirror90CW: |
126 | { |
127 | return 7; |
128 | } |
129 | |
130 | case kRotate90CCW: |
131 | { |
132 | return 8; |
133 | } |
134 | |
135 | case kUnknown: |
136 | { |
137 | return 9; |
138 | } |
139 | |
140 | default: |
141 | break; |
142 | |
143 | } |
144 | |
145 | return 1; |
146 | |
147 | } |
148 | |
149 | /*****************************************************************************/ |
150 | |
151 | bool dng_orientation::FlipD () const |
152 | { |
153 | |
154 | return (fAdobeOrientation & 1) != 0; |
155 | |
156 | } |
157 | |
158 | /*****************************************************************************/ |
159 | |
160 | bool dng_orientation::FlipH () const |
161 | { |
162 | |
163 | if (fAdobeOrientation & 4) |
164 | return (fAdobeOrientation & 2) == 0; |
165 | |
166 | else |
167 | return (fAdobeOrientation & 2) != 0; |
168 | |
169 | } |
170 | |
171 | /*****************************************************************************/ |
172 | |
173 | bool dng_orientation::FlipV () const |
174 | { |
175 | |
176 | if (fAdobeOrientation & 4) |
177 | return FlipD () == FlipH (); |
178 | |
179 | else |
180 | return FlipD () != FlipH (); |
181 | |
182 | } |
183 | |
184 | /*****************************************************************************/ |
185 | |
186 | dng_orientation dng_orientation::operator- () const |
187 | { |
188 | |
189 | uint32 x = GetAdobe (); |
190 | |
191 | if ((x & 5) == 5) |
192 | { |
193 | |
194 | x ^= 2; |
195 | |
196 | } |
197 | |
198 | dng_orientation result; |
199 | |
200 | result.SetAdobe (((4 - x) & 3) | (x & 4)); |
201 | |
202 | return result; |
203 | |
204 | } |
205 | |
206 | /*****************************************************************************/ |
207 | |
208 | dng_orientation dng_orientation::operator+ (const dng_orientation &b) const |
209 | { |
210 | |
211 | uint32 x = GetAdobe (); |
212 | |
213 | uint32 y = b.GetAdobe (); |
214 | |
215 | if (y & 4) |
216 | { |
217 | |
218 | if (x & 1) |
219 | x ^= 6; |
220 | else |
221 | x ^= 4; |
222 | |
223 | } |
224 | |
225 | dng_orientation result; |
226 | |
227 | result.SetAdobe (((x + y) & 3) | (x & 4)); |
228 | |
229 | return result; |
230 | |
231 | } |
232 | |
233 | /*****************************************************************************/ |
234 |