chimee-kernel

chimee-kernel

Chimee-kernel is a manger of video decoder.

Introduction

There are so many video type in the world. Each one may have its own decoder. In that case, we need a manger to handle it. In other word, we need a uniform statute.

What's more, as chimee handle most of the logic of a video player, a decoder can be just simple. It only need to provide normal function like load, play, pause etc.

In chimee, we call these decoder as VideoKernel. As a VideoKernel, it should fit rules below.

name	meaning	type	arguments	note
isSupport	A method to tell us whether the decoder can be runned in this browser	static method	none	Must be a staic method
constructor	The constructor of VideoKernel, we will passed in with three arguments, an HTMLVideoElement, an Object as KernelConfig, another Object as CustomConfig	method	videoElement: HTMLVideoElement, kernelConfig: Object, customConfig: Object
load	A method to load src	method	src: string
stopLoad	stop the network loading	method	None
startLoad	Resume from stopLoad or any network error	method	src: string
play	A method to play the vidoe	method	None
pause	A method to pause the playing	method	None
refresh	A method to reload the src	method	none
attachMedia		method	none
seek	A method to seek to a specific point	method	second: number
destroy	A method which will be called when we destroy the kernel	method	none
config	The config you stored	attribute
video	You can store the video element here	attribute
on	A method to listen on your video kernel	method	type: string, handler: Function
off	A method to stop listening on your video kernel	method	type: string, handler: Function
once	A method to listen on your video kernel only one time	method	type: string, handler: Function
emit	A method to emit event on your video kernel	method	type: string, data: any

In nowaday, we will rebuild the video kernel when user change the src.

If you support src switch on your video kernel. Please contact us, we need to add you into whitelist.

We may support use config on installKernel later.

Installation

npm install --save chimee-kernel

Usage

import ChimeeKernel from 'chimee-kernel'

var kernel = new ChimeeKernel(document.querySelector('video'),{
    src: 'http://yunxianchang.live.ujne7.com/vod-system-bj/TL2791e64b69ea0bea234c284c694986aa.flv',
    type: 'vod',
    box: 'flv'
});

//load source
kernel.load()

Config:

Field	Type	Description
src	String	video source
isLive	Boolean	'false' or 'true'，set video is a live stream or vod
box	String	Indicates stream box 'flv' , 'hls' , 'native' , 'mp4'
preset	{[string]: Function}	set kernel decoder，example: import chimeeKernelFlv for 'chimee-kernel-flv'; preset:{'flv': chimeeKernelFlv}
presetConfig	{[string]: Object}	custom config to some kernel decoder

Event:

Field	Type	Description
mediaInfo	Object	video mediaInfo
heartbeat	Object	emit per-second
error	Object	kernel error

Error code FLV:

Errno	Type	Description
100	Number	NET_ERROR
101	Number	CODEC_ERROR
102	Number	CANNOT_SEEK
103	Number	ENDOFSTREAM_ERROR
104	Number	MEDIASOURCE_ERROR
105	Number	SOURCEBUFFER_ERROR
106	Number	SBABORT_ERROR
106	Number	APPENDBUFFER_ERROR