- From: Jussi Kalliokoski <jussi.kalliokoski@gmail.com>
- Date: Fri, 24 Aug 2012 20:32:30 +0300
- To: olli@pettay.fi
- Cc: whatwg@whatwg.org
Is it based on [1]? No wonder I couldn't find precedents in the archives, when I was looking in the wrong archive! ^^ Thanks. [1] http://lists.w3.org/Archives/Public/public-webapps/2011JulSep/0741.html On Fri, Aug 24, 2012 at 6:27 PM, Olli Pettay <Olli.Pettay@helsinki.fi>wrote: > (This all should go to WebApps WG) > > In Gecko there is support for moz-chunked-arraybuffer > response type. > > > > > On 08/24/2012 03:23 AM, Jussi Kalliokoski wrote: > >> Hello, >> >> I've got a little proposal to solve a problem we're facing with one of our >> codebases ( aurora.js [1], i.e. audio codecs in JavaScript ). >> >> We need to stream the audio files (you don't want to store a 2 hour long >> live stream in the memory or wait until a whole file is loaded before >> playing). Currently we're using partial requests to fetch the data, but >> it's very expensive both in terms of CPU (currently the streaming takes >> more CPU than the actual decoding, I suspect this is a sum of garbage >> collection and other factors) and network. >> >> My proposal is that we add a feature for streaming to XHRs that are of the >> arraybuffer response type. >> >> My first idea was that if you set a property called "chunkSize" on the >> XHR, >> it would start dispatching an event called "onchunk" whenever a chunk of >> that size has been loaded. That event would contain a property "chunk" >> that >> would be an array buffer containing that data. However, I'm having second >> thoughts on that approach as it is likely to produce a lot of garbage. >> >> Instead, my refined idea is that you'd set a "chunk" property on the XHR >> to >> an ArrayBuffer, and each time a chunk of the size of the "chunk" was >> ready, >> it would set the values of the "chunk" property accordingly and the >> "onchunk" event would be dispatched. >> >> Thoughts? >> >> Cheers, >> Jussi >> >> [1] https://github.com/ofmlabs/**aurora.js<https://github.com/ofmlabs/aurora.js> >> >> >
Received on Friday, 24 August 2012 17:33:14 UTC