xxYUV

Convert between RGB and YUV

Benchmark Environment

https://github.com/metarutaiga/xxImGui/tree/experimental

Performance (macOS) Encode / Decode (unit : us)

		Encode		Decode
	Apple M1	YU12 / YV12	NV12 / NV21	YU12 / YV12	NV12 / NV21
xxYUV	AMX	?	?	67	?
xxYUV	NEON	37	38	38	42
libyuv	NEON	48	49	122	89
Accelerate	NEON	56	55	62	59
xxYUV	SSSE3	134	133
libyuv	SSSE3	146	146	171	164
Accelerate	SSSE3	273	274	232	231
xxYUV	SSE2	142	143	58	56

		Encode		Decode
	i7-8700B	YU12 / YV12	NV12 / NV21	YU12 / YV12	NV12 / NV21
xxYUV	AVX2	31	33	46	39
libyuv	AVX2	48	39	60	54
Accelerate	AVX2	83	84	67	62
xxYUV	SSSE3	50	51
libyuv	SSSE3	60	61	87	82
xxYUV	SSE2	90	91	69	62