On Wed, Jul 24, 2013 at 9:18 AM, Chris Rogers <crogers@google.com> wrote: > On Tue, Jul 23, 2013 at 1:10 PM, Chris Wilson <cwilso@google.com> wrote: > >> OK. I want to load an audio file, perform some custom analysis on it >> (e.g. determine average volume), perform some custom (offline) processing >> on the buffer based on that analysis (e.g. soft limiting), and then play >> the resulting buffer. >> > My original proposal (as implemented in Gecko) makes no extra copies here. The play operation neuters the JS array(s) and migrates the data to the audio thread. And I can add two more realistic use cases here: > > * at any stage analyze and display the resulting buffer as a waveform on > the screen for an audio editor > If you do this while the data is playing, my proposal will copy the data. > * generate AudioBuffer PCM data directly in JavaScript which then gets > played back using an AudioBufferSourceNode > My proposal makes no extra copies here. Rob -- Jtehsauts tshaei dS,o n" Wohfy Mdaon yhoaus eanuttehrotraiitny eovni le atrhtohu gthot sf oirng iyvoeu rs ihnesa.r"t sS?o Whhei csha iids teoa stiheer :p atroa lsyazye,d 'mYaonu,r "sGients uapr,e tfaokreg iyvoeunr, 'm aotr atnod sgaoy ,h o'mGee.t" uTph eann dt hwea lmka'n? gBoutt uIp waanndt wyeonut thoo mken.o w * *
Received on Tuesday, 23 July 2013 22:27:16 UTC