tlottie

Library for drawing lottie animations, written in Rust.

Micro-optimized and benchmarked across 17k+ animations from Telegram, against rlottie and thorvg.
SIMD on ARM NEON, x86_64 SSE2 AVX2 AVX512, and WASM: web demo.
Support of fitz modifier and color replacements.
Support of rendering into only alpha channel bitmap.
Safe. Lottie JSON is treated as untrusted input.
Zero¹ dependencies.

Building (Native)

cargo rustc --release --features c-api --lib --crate-type staticlib
# library will be built at target/release/libtlottie.a
# include headers are at include/tlottie.h

Building (Web)

./examples/web/build.sh
# .wasm will be copied to examples/web/tlottie.wasm

Example on how to work with tlottie.wasm is at examples/web/.

Benchmarks

Frame time, mainly compared to rlottie2019.

android arm, Samsung Fold7: -64.7% at 64px, -55.8% at 320px, -52.0% at 720px
android arm, Samsung F15: -62.7% at 64px, -42.0% at 320px, -23.0% at 720px
macOS arm: -61.5% at 64px, -47.6% at 320px, -27.3% at 720px
linux x86: -70.0% at 64px, -50.2% at 320px, -36.4% at 720px

hashbrown library is taken as a substitute for hashmaps to avoid std in Rust. ↩

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