- From: Marcus Geelnard <mage@opera.com>
- Date: Tue, 30 Jul 2013 23:45:09 +0200
- To: Ehsan Akhgari <ehsan.akhgari@gmail.com>
- Cc: Jer Noble <jer.noble@apple.com>, Olivier Thereaux <Olivier.Thereaux@bbc.co.uk>, Joseph Berkovitz <joe@noteflight.com>, WG <public-audio@w3.org>
- Message-ID: <CAL8YEv7JO2YowF4tMnMJsSAUuyesM7CNQ62mLrV+YWtEz43Qjg@mail.gmail.com>
On Tue, Jul 30, 2013 at 11:24 PM, Ehsan Akhgari <ehsan.akhgari@gmail.com>wrote: > On Mon, Jul 29, 2013 at 3:55 PM, Jer Noble <jer.noble@apple.com> wrote: > >> >> On Jul 29, 2013, at 8:44 AM, Jer Noble <jer.noble@apple.com> wrote: >> >> > >> > On Jul 29, 2013, at 3:35 AM, Olivier Thereaux < >> Olivier.Thereaux@bbc.co.uk> wrote: >> > >> >> My understanding was that Jer's proposal (for lack of a better term - >> I know that Jer has said it was not his preferred solution, only a proposed >> compromise) was the first one listed in the gist I shared, but I might be >> wrong. >> > >> > Sorry, I've been on vacation for the last week. I'll clean up that >> Gist with the feedback received so far, and narrow it to a single, explicit >> proposal. >> > >> >> I’ve updated the gist <https://gist.github.com/jernoble/6034137> to >> remove all references to “alternatives” and added a section about memory >> and performance considerations. > > > Thanks for doing this, Jer! > > A few issues about your proposal: > > * In the AudioBuffer constructor, I believe you want to accept a sequence, > not an array. > * I think you want to convert AudioBuffer.channels to be a sequence as > well. > * Should AudioProcessingEvent.outputBuffer be nullable? I don't think > that it makes sense to require the implementation to allocate an object > (even lazily) if it's going to be overwritten in the typical use case. > * Float32Array is not a regular Web IDL interface < > http://www.khronos.org/registry/typedarray/specs/latest/#7> so you cannot > extend it with the partial interface syntax (AFAIK). > > ...and as I've suggested before ( http://lists.w3.org/Archives/Public/public-audio/2013JulSep/0199.html) I would really like us to consider replacing AudioBuffers with (ownership transferred) Float32Arrays for the AudioProcessingEvent (short version: AudioBuffers are mostly off-line generated and static, while the data passed to/from an AudioProcessingEvent is purely dynamic and temporary). /Marcus > Cheers, > -- > Ehsan > <http://ehsanakhgari.org/> > >
Received on Tuesday, 30 July 2013 21:45:36 UTC