WebAudio/Test Plan

Web Audio

Feature	Status	Release Target	Dev Lead	QA Lead	QA Status
Web Audio	Landed	Firefox 25	Ehsan Akhgari	Manuela Muntean	Signed Off

Summary

The Web Audio API describes a high-level JavaScript API for processing and synthesizing audio in web applications. The primary paradigm is of an audio routing graph, where a number of AudioNode objects are connected together to define the overall audio rendering.

• Note: for Linux platform, in order to activate this feature, you need to go to about:config and set media.gstreamer.enabled to true

References

• MozillaWiki article for the W3C Web Audio API
• W3C Web Audio API Specification
• Differences in the implementation between Firefox and Chrome

• Demo pages:
  • http://webaudiodemos.appspot.com/
  • http://chromium.googlecode.com/svn/trunk/samples/audio/samples.html
  • http://intgr.github.io/walkinafog.com/

• • http://webaudioplayground.appspot.com/

• Notes
  • not all demos are currently available for Firefox (most of them only work with Chrome)
  • the MP3 support isn't finished yet on Mac

Test Cases

• The manual test cases for this feature can be viewed in this Moztrap testsuite
• Automated tests:
  • http://mxr.mozilla.org/mozilla-central/source/content/media/webaudio/test/
  • content/media/test/crashtests/907986-1.html
  • content/media/test/crashtests/907986-2.html
  • content/media/test/crashtests/907986-3.html
  • content/media/test/crashtests/907986-4.html
  • content/media/test/crashtests/889042.html
  • content/media/test/crashtests/880129.html
  • content/media/test/crashtests/878407.html
  • content/media/test/crashtests/878328.html
  • content/media/test/crashtests/877820.html
  • content/media/test/crashtests/876834.html
  • content/media/test/crashtests/876215.html
  • content/media/test/crashtests/876024-1.html
  • content/media/test/crashtests/876024-2.html
  • content/media/test/crashtests/875911.html
  • content/media/test/crashtests/875596.html
  • content/media/test/crashtests/868504.html

Bugs

• Tracking bug - 779297

Sign off

Criteria

• All the test cases were executed
• All the blocker, critical, major bugs have been fixed

Firefox 24 Aurora (pre-beta sign off) - 08/04/2013

• On the next OSs:
  • Windows 7 64bit
  • Windows 8 32bit
  • Ubuntu 12.10 32bit
  • Mac OSX 10.8.3

Firefox 25 Aurora merge - 08/09/2013

• On the next OSs:
  • Windows 7 64bit
  • Windows 8 64bit
  • Ubuntu 12.10 32bit
  • Mac OSX 10.8

• Concerns:
  • bug 890528 - DelayNode repeats last signal multiple times, does no delay - NEW
  • bug 848954 - Call the MediaStreamGraph's processing code from the cubeb callback when needed - NEW
  • bug 849636 - Handle invalid offset/duration passed to AudioBufferSourceNode.start the same way that WebKit does - ASSIGNED
  • bug 857610 - Handle channel count changes in delay node - NEW
  • bug 864171 - Problem in converting AudioParam times to track ticks - NEW
  • bug 864780 - decodeAudioData fails to decode a wave file - NEW
  • bug 865239 - [Tracking] Finish implementing PannerNode - NEW
  • bug 865241 - Implement HRTF panning for PannerNode - ASSIGNED
  • bug 865253 - (oscillatornode) Implement OscillatorNode - NEW
  • bug 865256 - Implement WaveTable - REOPENED
  • bug 865553 - Specific mp3 file does not decode correctly when using `decodeAudioData` - REOPENED
  • bug 865642 - Intermittent test_delayNode.html,test_delayNodeWithGain.html,test_gainNode.html,test_scriptProcessorNode.html | Test timed out. - REOPENED
  • bug 868116 - Intermittent test_currentTime.html | AudioContext.currentTime should have increased by now - REOPENED
  • bug 874508 - Reconcile Web Audio with audio channels - NEW
  • bug 877662 - Optimize the AudioNodeEngine.cpp routines - NEW
  • bug 881092 - Cannot decode wave file - NEW
  • bug 881587 - Optimize the AudioNodeEngine.cpp routines added in bug 815643 - NEW
  • bug 881959 - Investigate support for cycles in the MediaStreamGraph with delay nodes present - NEW
  • bug 882171 - Optimize the AudioNodeEngine.cpp routines for NEON - NEW
  • bug 882543 - Create Web Audio benchmarks - NEW
  • bug 883010 - Optimize MediaStreamGraphImpl::UpdateStreamOrder in order to optimize away how much time we spend on it in every iteration of the MSG - NEW
  • bug 883844 - AudioBufferSourceNodes scheduled in a sequence aren't seamless - NEW
  • bug 885496 - Optimize KissFFT with NEON instructions - NEW
  • bug 885505 - Pref on Web Audio for Firefox 24 - NEW
  • bug 886381 - WebAudio static with closely timed AudioBufferSourceNodes - UNCONFIRMED
  • bug 890369 - WebAudio crash [@mozilla::StreamBuffer::FindTrack] - NEW

Firefox 25 Aurora (pre-beta sign off) - 09/02/2013

• All the test cases were executed on the next OSs:
  • Windows 7 64bit
  • Windows 8 32bit
  • Ubuntu 12.10 32bit
  • Mac OSX 10.9

• Investigated:
  • bug 890528 - DelayNode repeats last signal multiple times, does no delay
  • bug 865239 - [Tracking] Finish implementing PannerNode
  • bug 865241 - Implement HRTF panning for PannerNode
  • bug 865253 - (oscillatornode) Implement OscillatorNode
  • bug 865553 - Specific mp3 file does not decode correctly when using `decodeAudioData`
  • bug 881092 - Cannot decode wave file
  • bug 886381 - WebAudio static with closely timed AudioBufferSourceNodes
  • bug 910045 - ScriptProcessorNode onaudioprocess sometimes fires too fast

• Concerns:
  • bug 848954 - Call the MediaStreamGraph's processing code from the cubeb callback when needed - NEW
  • bug 849636 - Handle invalid offset/duration passed to AudioBufferSourceNode.start the same way that WebKit does - ASSIGNED
  • bug 857610 - Handle channel count changes in delay node - NEW
  • bug 864171 - Problem in converting AudioParam times to track ticks - NEW
  • bug 864780 - decodeAudioData fails to decode a wave file - NEW
  • bug 865642 - Intermittent test_delayNode.html,test_delayNodeWithGain.html,test_gainNode.html,test_scriptProcessorNode.html | Test timed out. - REOPENED
  • bug 868116 - Intermittent test_currentTime.html | AudioContext.currentTime should have increased by now - REOPENED
  • bug 881092 - Cannot decode wave file - NEW
  • bug 881587 - Optimize the AudioNodeEngine.cpp routines added in bug 815643 - NEW
  • bug 883010 - Optimize MediaStreamGraphImpl::UpdateStreamOrder in order to optimize away how much time we spend on it in every iteration of the MSG - NEW
  • bug 883844 - AudioBufferSourceNodes scheduled in a sequence aren't seamless - NEW
  • bug 885496 - Optimize KissFFT with NEON instructions - NEW
  • bug 890369 - WebAudio crash [@mozilla::StreamBuffer::FindTrack] - NEW
  • bug 923319 - Web Audio performance is extremely poor - NEW
  • bug 898291 - PannerNode with HRTF should continue producing output a short time after it is GCed - NEW