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kpp-render

v2.1.3

Published

Server side Phigros Chart Rendering, with decent performance and good compatibilities.

Readme

用于后端

得益于 skia-canvas,奇谱播放器也可用于Node.js或Bun等后端运行环境。

安装后端版本:npm install kpp-renderbun add kpp-render。(其实我还没上传这个包)

在拯救者Y7000P(i7 14650,GeForce 5060)上的测试,干跑物量1000左右谱面的渲染,速度平均能有1000多fps。渲染Sildild的Singularity谱面(物量84488),平均速度30多fps。峰值内存占用约2GiB。

但是以上是干跑渲染。如果使用ffmpeg(为了在单进程中尽量零拷贝,本项目使用了 node-av)收集并合成视频,则会受到编码及封装的速度限制。本人不太会玩视频合成,无法尽可能压榨 ffmpeg 性能,欢迎优化。

export async function renderChartFast(
    chart: Chart,
    illustrationBlobOrBuffer: Blob | Buffer,
    textureFetcher: (name: string) => Promise<Buffer>,
    audioBuffer: Buffer,
    range?: [number, number]
): Promise<{
    out: Buffer;
    duration: number;
    fps: number;
}>;