npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

node-sdl-speaker

v0.1.0

Published

Output PCM stream data to speaker with SDL2.

Downloads

3

Readme

node-sdl-speaker

Output PCM stream data to speaker with SDL2.

使用SDL2播放PCM数据。主要是用于播放PCM数据流。使用TPCircularBuffer缓存音频数据

Installation

$ npm install sdl-speaker

Example

const Speaker = require('sdl-speaker');
const speaker = new Speaker({
  sampleRate: 16000,
  channels: 1,
  samplesPerFrame: 320
});

// write some buffer;
speaker.write(buffer);

// start play audio;
speaker.open();

API

new Speaker([ option ]) -> instance;

创建一个Speaker实例。option是可选对象,包含如下配置

  • channels: 声道数. 默认值: 1.
  • samplesRate: 每个声道的采样率. 默认值: 16000.
  • samplesPerFrame: 每一帧的采样数. 默认值: 320.

speaker.write(pcmBuffer)

把音频数据写入到缓冲区中。可以在speaker.open()之前执行,提前缓存数据。

speaker.open()

开始播放音频。从缓冲区中读取数据。如果缓冲区的数据小于samplesPerFrame则填充静音。

speaker.close()

关闭播放器。并清空缓冲区。

speaker.pause()

暂停播放器。不清空缓冲区。

speaker.resume()

重启播放器。

speaker.clean()

主动清空缓冲区。