http://www.libjpeg-turbo.org/About/FUD http://www.libjpeg-turbo.org/About/FUD > libjpeg/SIMD predates libjpeg v7 by several years, which means that our SIMD e

http://www.libjpeg-turbo.org/About/FUD http://www.libjpeg-turbo.org/About/FUD > libjpeg/SIMD predates libjpeg v7 by several years, which means that our SIMD extensions are not compatible with some of the new features in libjpeg v7 and v8. Thus, merging with the upstream libjpeg code would have been very difficult, if not impossible (more recent comments by the current maintainer of libjpeg indicated that our SIMD extensions would not have been accepted, anyhow.) > In fact, since jpeg-7, every new release of the IJG's software has broken backward ABI compatibility with prior releases (needlessly, in the case of jpeg-9), and both jpeg-8 and jpeg-9 introduced new, non-standard image formats that couldn't be decoded by previous IJG releases or by other JPEG codecs.