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example
setup
src
test
.gitignore
WebpWICCodec.sln
readme.txt
setversion.py

readme.txt

Windows Imaging Component wrapper around libwebp for WebP support.
Currently, only decoding is supported, but that allows to e.g., see the files
in Windows PhotoViewer.

Directories:
example - an example webp file.
setup - WiX scripts to create MSI packages and a wrapper setup.
src - source code of the WIC interfaces.
test - tests comparing the WebP codec with the builtin Jpeg codec.

Directories created after a build
bin - place where generated DLLs, MSIs etc will be put.
ipch - precompiled headers by Visual Studio.
obj - place where generated object files etc, will be put.

The solution/project were created in Visual Studio 2010, I don't know if they
work with older versions. It requires Windows SDK 7.1 - the projects its
compiler, as the compiler in Visual C++ Express doesn't support x64.

The tests loads the decoder using CoCreateInstance - i.e. they choose the DLL
that is currently registered in the system registry - they don't automatically
choose the DLL from the active configuration.

To register a DLL. Run from an elevated command prompt (elevated command
prompt = choose command prompt icon, right click and choose 'Run As
Administrator') e.g.:

regsvr32 bin\x64\Debug\WebpWICCodec.dll

Note that the registry has different branches for 32-bit and 64-bit COM object
registrations, thus, you register independently a win32 and x64 DLL. On the
other hand registering e.g. a release DLL when a debug DLL for the same
architecture was previously registered should overwrite the previous
registration.

If you want to unregister a DLL, run e.g.:

regsvr32 /u bin\x64\Debug\WebpWICCodec.dll


The tests were written on Windows 7. Some of them may fail e.g., on Vista.

The setup consists of a x86 MSI package (with the x64 DLL), x64 MSI package
(with both DLLs) and a wrapper EXE that chooses the correct one. The MSIs are
created with WiX 3.0. Typing 'msbuild' should create both packages and the
wrapper.