This color conversion code is from the Chromium open source project available here: http://code.google.com/chromium/ The code comes from svn revision 63840 on 2010-10-26. If you just want to check out this individual directory, use: svn co -r 63840 http://src.chromium.org/svn/trunk/src/media/base The code was copied from a Chromium svn checkout using the 'update.sh' script which then applies patches for our build and to add dynamic CPU detection. convert.patch contains the following changes: * Change Chromium code to build using Mozilla build system. * Add runtime CPU detection for MMX * Move default C implementation to work on all platforms. * Change Chromium code to allow a picture region. * The YUV conversion will convert within this picture region only. * Add YCbCr 4:4:4 support * Bug 619178 - Update CPU detection in yuv_convert to new SSE.h interface. * Bug 616778 - Split yuv_convert FilterRows vectorized code into separate files so it can be properly guarded with cpuid() calls. win64.patch: SSE2 optimization for Microsoft Visual C++ x64 version