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authordan miller2007-10-18 08:19:20 +0000
committerdan miller2007-10-18 08:19:20 +0000
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putting openjpeg-libsl source in /libraries; updating binaries
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1How to compile the library under MS VC++ 6.0
2--------------------------------------------
3
4The library comes in two versions :
5- a static library that can be linked against any C/C++ program
6- a Dynamic Link Library (Windows DLL) that can be used in any C/C++ program and in most interpreted languages (e.g. VB, C#, ...).
7
8In order to compile the library version *or* the DLL version, you will have to :
9
101) Open the MSVC workspace named LibOpenJPEG.dsw
112) Set the choosen target as the active project, that means :
12 a) Go to the Menu 'Build -> Set Active Configuration'
13 b) Choose one of the following configuration :
14 - DllOpenJPEG - Win32 Release => creates a DLL in release mode named OpenJPEG.dll
15 - DllOpenJPEG - Win32 Debug => creates a DLL in debug mode named OpenJPEGd.dll
16 - LibOpenJPEG - Win32 Release => creates a static library in release mode named LibOpenJPEG.lib
17 - LibOpenJPEG - Win32 Debug => creates a static library in debug mode named LibOpenJPEGd.lib
183) Build the project : Menu -> Build -> Rebuild All
19
20The build process will create a directory named 'dist' that will contain all you need in order to use the library.
21
22Simple codec compilation
23------------------------
24
25Once you've built the library, you might want to test it with a basic codec. To do this, go to the codec directory and use one of the following projects to build an encoder and decoder respectively:
26- image_to_j2k.dsw
27- j2k_to_image.dsw
28
29IMPORTANT NOTE :
30----------------
31
32The encoder and decoder samples are configured to use the static version of the library. A link to the LibOpenJPEG static project is included in these projects so that you can build both a codec and the library in a single pass.
33
34However, you MUST NOTE that in order to use LibOpenJPEG as a static library in your program, you NEED to add the following compiler directive to your project : OPJ_STATIC
35Look at the menu 'Project -> Settings -> C/C++ tab -> preprocessor definition' to see how this is configured.
36When using OpenJPEG as a DLL, this compiler directive MUST NOT be used.
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