Rust utilities for YUV format handling and conversion.

Fast and simple YUV approximation conversion in pure Rust. At most the same as libyuv does. Performance will be equal to libyuv or slightly higher on platforms where SIMD is implemented. Otherwise equal or slower.

Mostly implemented AVX-512, AVX2, SSE, NEON, WASM

X86 targets with SSE and AVX uses runtime dispatch to detect available cpu features.

Supports:

• YCbCr ( aka YUV )
• YCgCo
• YCgCo-R
• YUY2
• Identity ( GBR )
• Sharp YUV

All the methods support RGB, BGR, BGRA and RGBA

SIMD

rustc avx2, avx512f, avx512bw, neon, sse4.1 features should be set when you expect than code will run on supported device.

For AVX-512 target feature avx512bw is required along with feature nightly_avx512 and nightly rust channel compiler.

Wasm simd128 should be enabled for implemented SIMD wasm paths support

Rayon

Some paths have multi-threading support, consider this feature if you're working on platform with multi-threading.

Adding to project

cargo add yuvutils-rs

RGB to YCbCr

let mut planar_image =
    YuvPlanarImageMut::<u8>::alloc(width as u32, height as u32, YuvChromaSubsampling::Yuv420);
rgb_to_yuv422(
    &mut planar_image,
    &src_bytes,
    rgba_stride as u32,
    YuvRange::Limited,
    YuvStandardMatrix::Bt601,
)
.unwrap();

YCbCr to RGB

yuv420_to_rgb(
    &yuv_planar_image,
    &mut rgba,
    rgba_stride as u32,
    YuvRange::Limited,
    YuvStandardMatrix::Bt601,
)
.unwrap();

Benchmarks

YUV 8 bit-depth conversion

cargo bench --bench yuv8 --manifest-path ./app/Cargo.toml

Tests performed on the image 5763x3842

Encoding

	time(NEON)	Time(AVX)
utils RGB->YUV 4:2:0	3.16ms	3.53ms
libyuv RGB->YUV 4:2:0	3.58ms	33.87ms
utils RGBA->YUV 4:2:0	4.04ms	5.47ms
libyuv RGBA->YUV 4:2:0	4.87ms	23.48ms
utils RGBA->YUV 4:2:2	4.37ms	7.08ms
libyuv RGBA->YUV 4:2:2	5.90ms	35.23ms
utils RGBA->YUV 4:4:4	4.49ms	7.97ms

Decoding

	time(NEON)	Time(AVX)
utils YUV NV12->RGB	3.86ms	6.24ms
libyuv YUV NV12->RGB	5.20ms	45.28ms
utils YUV 4:2:0->RGB	3.26ms	5.25ms
libyuv YUV 4:2:0->RGB	5.70ms	44.95ms
utils YUV 4:2:0->RGBA	3.77ms	5.98ms
libyuv YUV 4:2:0->RGBA	6.13ms	6.88ms
utils YUV 4:2:2->RGBA	4.88ms	6.91ms
libyuv YUV 4:2:2->RGBA	5.91ms	6.91ms
utils YUV 4:4:4->RGBA	4.79ms	7.20ms
libyuv YUV 4:4:4->RGBA	4.82ms	7.30ms

This project is licensed under either of

• BSD-3-Clause License (see LICENSE)
• Apache License, Version 2.0 (see LICENSE)

at your option.