1 /*
2 Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization
3 dedicated to making software imaging solutions freely available.
4
5 You may not use this file except in compliance with the License. You may
6 obtain a copy of the License at
7
8 https://imagemagick.org/script/license.php
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15
16 MagickCore image colormap methods.
17 */
18 #ifndef MAGICKCORE_COLORMAP_PRIVATE_H
19 #define MAGICKCORE_COLORMAP_PRIVATE_H
20
21 #include "MagickCore/image.h"
22 #include "MagickCore/color.h"
23 #include "MagickCore/exception-private.h"
24
25 #if defined(__cplusplus) || defined(c_plusplus)
26 extern "C" {
27 #endif
28
ConstrainColormapIndex(Image * image,const ssize_t index,ExceptionInfo * exception)29 static inline ssize_t ConstrainColormapIndex(Image *image,const ssize_t index,
30 ExceptionInfo *exception)
31 {
32 if ((index < 0) || (index >= (ssize_t) image->colors))
33 {
34 if (exception->severity != CorruptImageError)
35 (void) ThrowMagickException(exception,GetMagickModule(),
36 CorruptImageError,"InvalidColormapIndex","`%s'",image->filename);
37 return(0);
38 }
39 return((ssize_t) index);
40 }
41
ValidateColormapValue(Image * image,const ssize_t index,Quantum * target,ExceptionInfo * exception)42 static inline void ValidateColormapValue(Image *image,
43 const ssize_t index,Quantum *target,ExceptionInfo *exception)
44 {
45 if ((index < 0) || (index >= (ssize_t) image->colors))
46 {
47 if (exception->severity != CorruptImageError)
48 (void) ThrowMagickException(exception,GetMagickModule(),
49 CorruptImageError,"InvalidColormapIndex","`%s'",image->filename);
50 *target=(Quantum) 0;
51 }
52 else
53 *target=(Quantum) index;
54 }
55
56 #if defined(__cplusplus) || defined(c_plusplus)
57 }
58 #endif
59
60 #endif
61