Use the AltiVec/VMX instruction set
Name Category Description
botan dev-libs C++ crypto library
eigen dev-cpp C++ template library for linear algebra
ffmpeg media-video Complete solution to record/convert/stream audio and video. Includes libavcodec
fftw sci-libs Fast C library for the Discrete Fourier Transform
flac media-libs free lossless audio encoder and decoder
gimp media-gfx GNU Image Manipulation Program
libdvbcsa media-libs Free implementation of the DVB Common Scrambling Algorithm - DVB/CSA
libgcrypt dev-libs General purpose crypto library based on the code used in GnuPG
libsdl2 media-libs Simple Direct Media Layer
mednafen games-emulation Argument-driven multi-system emulator utilizing OpenGL and SDL
mpg123 media-sound a realtime MPEG 1.0/2.0/2.5 audio player for layers 1, 2 and 3
nss dev-libs Mozilla's Network Security Services library that implements PKI support
pixman x11-libs Low-level pixel manipulation routines
vlc media-video Media player and framework with support for most multimedia files and streaming
x264 media-libs A free library for encoding X264/AVC streams
x265 media-libs Library for encoding video streams into the H.265/HEVC format

Thank you!