SIMDE was introduced for aarch64 support, however, the library itself
supports non-SIMD fallback, which allows us provide support to other
platforms without code changes.
There is another world beyond x86. So we can simply enable SIMDE for
processors without SSE2 support.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Intended to replace libff as the media playback library. Intended to
use less threads and be more extensible. It was nearly impossible to
modify libff without bursting a vein.