96644 2012-09-13 07:17:44 -0700 Issue with convolver node usage in webkit2:webAudio API 2023-03-23 08:38:48 -0700 1 1 1 Unclassified WebKit Web Audio 528+ (Nightly build) PC Linux RESOLVED INVALID P1 Blocker --- 0 kdj.tikka webkit-unassigned alexwriter2003 gouache95 pnormand s.choi oldest_to_newest 719435 0 kdj.tikka 2012-09-13 07:17:44 -0700 Hi, I was trying to run few WebAudio API applications from chrome site; especially for convolverNode. App name: Digital DJ Link: http://chromium.googlecode.com/svn/trunk/samples/audio/dj.html This application did not work properly, for small fraction the audio came and further the silence played out. After removing the convolverNode; referring the lines in application. ... line no.: 386: //convolver.connect(preCompressorGain); ... line no.: 397: //setReverbImpulseResponse('impulse-responses/filter-rhythm2.wav'); ... The application worked perfectly :-) To investigate further, with enabled convolverNode and I added data dump logs in following places at same time: 1. ConvolverNode::process() for input(0)->bus(), to check input to convolverNode. 2. webKitWebAudioSrcLoop(), for (const_cast<float*>(priv->bus->channel(index)->data())). The data for 1. is complete silence whereas for 2. it is proper convoluted stream. Here it seems that the WebAudio API convolverNode has issue before connecting to other node. I tried to other application which are using ConvolverNode; result is same "for small fraction the audio came and further the silence played out". Please share your views. Thanks and regards, kaustubh 719449 1 pnormand 2012-09-13 07:36:15 -0700 That demo works fine here with your patch from bug 95833. Without that patch I can hear the pop noise glitches of bug 82347 (so I'll close the last as dupe of the first btw). Tested with a 64-bit release build of webkitgtk. Should we close this one? 720241 2 kdj.tikka 2012-09-13 19:34:34 -0700 Good it is working on 64-bit ! I have tested with 32-bit machine. Could you please share your 64-bit release details on which it is working. So that I can try for the same one at my end. Is it OK to take tar ball "WebKit r128500" ? Thanks, kdj 720348 3 pnormand 2012-09-13 23:21:02 -0700 What kind of details about my setup do you need? 720535 4 kdj.tikka 2012-09-14 03:44:04 -0700 I am getting this error with WebKit r128500: CXX Source/JavaScriptCore/Programs_jsc_3-jsc.o CXX Source/WebKit2/gtk/Programs_WebKitWebProcess-MainGtk.o CXXLD Programs/WebKitPluginProcess libtool: link: cannot find the library `libjavascriptcoregtk-3.0.la' or unhandled argument `libjavascriptcoregtk-3.0.la' make[1]: *** [Programs/WebKitPluginProcess] Error 1 make[1]: *** Waiting for unfinished jobs.... make[1]: Leaving directory `/home/newgen/webkit-org/WebKit-r128500/WebKitBuild/Release' make: *** [all] Error 2 I tried with this path: http://savannah.gnu.org/bugs/?30653 Could you please tell/guide the exact patch for the same ? 720540 5 pnormand 2012-09-14 03:52:51 -0700 If you do build-webkit --gtk --update-gtk it should work. Please join #webkitgtk+ if you have build issues, bugzilla is not the best place to discuss about that. 721420 6 kdj.tikka 2012-09-15 04:24:51 -0700 Ok, I registered to #webkitgtk+ and able to build on 64bit webkitGtk with webaudio. I tried to run the same app link. But not able to hear the audio. Please tell me anything more you are doing at your end. 721685 7 pnormand 2012-09-16 22:51:39 -0700 Have you set the AUDIO_RESOURCES_PATH env variable to point to .../Source/WebCore/platform/audio/resources ? 721721 8 kdj.tikka 2012-09-17 00:29:34 -0700 yes, after setting same Env var, Convolver node is working; thanks philippe.