svn-gvsig-desktop / tags / v1_1_1_Build_1019 / libraries / libjni-mrsid / include / filters / lti_cropFilter.h @ 32257
History | View | Annotate | Download (3.19 KB)
1 | 662 | igbrotru | /* $Id$ */
|
---|---|---|---|
2 | /* //////////////////////////////////////////////////////////////////////////
|
||
3 | // //
|
||
4 | // This code is Copyright (c) 2004 LizardTech, Inc, 1008 Western Avenue, //
|
||
5 | // Suite 200, Seattle, WA 98104. Unauthorized use or distribution //
|
||
6 | // prohibited. Access to and use of this code is permitted only under //
|
||
7 | // license from LizardTech, Inc. Portions of the code are protected by //
|
||
8 | // US and foreign patents and other filings. All Rights Reserved. //
|
||
9 | // //
|
||
10 | ////////////////////////////////////////////////////////////////////////// */
|
||
11 | /* PUBLIC */
|
||
12 | |||
13 | #ifndef LTI_CROPFILTER_H
|
||
14 | #define LTI_CROPFILTER_H
|
||
15 | |||
16 | // lt_lib_mrsid_core
|
||
17 | #include "lti_imageFilter.h" |
||
18 | |||
19 | |||
20 | LT_BEGIN_NAMESPACE(LizardTech) |
||
21 | |||
22 | #if defined(LT_COMPILER_MS)
|
||
23 | #pragma warning(push,4) |
||
24 | #endif
|
||
25 | |||
26 | |||
27 | /**
|
||
28 | * crops the image stage to a smaller width and height
|
||
29 | *
|
||
30 | * This class crops the image stage to a smaller width and height.
|
||
31 | */
|
||
32 | class LTICropFilter : public LTIImageFilter |
||
33 | { |
||
34 | public:
|
||
35 | /**
|
||
36 | * constructor
|
||
37 | *
|
||
38 | * Creates an image stage which corresponds to a cropped subsection of the
|
||
39 | * input image, according to the given offset, width, and height.
|
||
40 | *
|
||
41 | * @param sourceImage the base image
|
||
42 | * @param xOffset x-position of the origin of the new image
|
||
43 | * (specified relative to the input image)
|
||
44 | * @param yOffset y-position of the origin of the new image
|
||
45 | * (specified relative to the input image)
|
||
46 | * @param newWidth width of the new image
|
||
47 | * @param newHeight height of the new image
|
||
48 | * @param takeOwnership set to true to have the filter delete the \a sourceImage
|
||
49 | */
|
||
50 | LTICropFilter(LTIImageStage* sourceImage, |
||
51 | lt_int32 xOffset, |
||
52 | lt_int32 yOffset, |
||
53 | lt_int32 newWidth, |
||
54 | lt_int32 newHeight, |
||
55 | bool takeOwnership);
|
||
56 | virtual ~LTICropFilter(); |
||
57 | virtual LT_STATUS initialize(); |
||
58 | |||
59 | LT_STATUS projectPointAtMag(double upperLeft,
|
||
60 | double mag,
|
||
61 | double& newUpperLeft) const; |
||
62 | |||
63 | LT_STATUS projectDimAtMag(double dim,
|
||
64 | double mag,
|
||
65 | double& newDim) const; |
||
66 | |||
67 | LT_STATUS getDimsAtMag(double mag,
|
||
68 | lt_uint32& width, |
||
69 | lt_uint32& height) const;
|
||
70 | |||
71 | bool getReaderScene(const LTIScene &decodeScene, LTIScene &readerScene) const; |
||
72 | |||
73 | protected:
|
||
74 | LT_STATUS decodeBegin(const LTIScene& scene);
|
||
75 | LT_STATUS decodeEnd(); |
||
76 | LT_STATUS decodeStrip(LTISceneBuffer& stripBuffer, const LTIScene& stripScene);
|
||
77 | |||
78 | LT_STATUS getChildScene(const LTIScene &decodeScene, LTIScene &childScene) const; |
||
79 | |||
80 | private:
|
||
81 | typedef LTIImageFilter Super;
|
||
82 | |||
83 | const lt_int32 m_xOffset;
|
||
84 | const lt_int32 m_yOffset;
|
||
85 | const lt_int32 m_newWidth;
|
||
86 | const lt_int32 m_newHeight;
|
||
87 | |||
88 | // nope
|
||
89 | LTICropFilter(const LTICropFilter&);
|
||
90 | LTICropFilter& operator=(const LTICropFilter&);
|
||
91 | }; |
||
92 | |||
93 | |||
94 | LT_END_NAMESPACE(LizardTech) |
||
95 | |||
96 | #if defined(LT_COMPILER_MS)
|
||
97 | #pragma warning(pop)
|
||
98 | #endif
|
||
99 | |||
100 | #endif // LTI_CROPFILTER_H |