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Media/WebRTC Audio Perf: Difference between revisions
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'''Note: A lot of things described in here is still Work in Progress and is expected to change over time.''' | '''Note: A lot of things described in here is still a Work in Progress and is expected to change over time.''' | ||
== Introduction == | == Introduction == | ||
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Talos provides automated way to start/stop Firefox , perform tests and capture results to be reported to the Mozilla's graphing server across various Firefox builds. | Talos provides automated way to start/stop Firefox , perform tests and capture results to be reported to the Mozilla's graphing server across various Firefox builds. | ||
Talos is used in our setup to run media tests along with other start-up and page-loader performance tests. | Talos is used in our setup to run media tests along with other start-up and page-loader performance tests. | ||
=== MozCaptureStream and Peer Connection === | === MozCaptureStream and Peer Connection === | ||
Once we have the framework figured out to run automated media-tests, let's discuss on how do we insert | Once we have the framework figured out to run automated media-tests, let's discuss on how do we insert | ||
input audio file into WebRTC Peer Connection. | input audio file into WebRTC Peer Connection. For this purpose Mozilla's MediaStreamProcessing API '''mozCaptureStreamUntilEnded''' enables the <audio> element to produce MediaStream that consists | ||
of whatever the <audio> element is playing. Thus the stream produced by the <audio> element in this | |||
fashion replaces the function of obtaining the media stream via the WebRTC GetUserMedia API. Finally, | |||
the generated MediaStream is added to the local Peer Connection element via the addStream() API as shown | |||
below | |||
<a href="https://dvcs.w3.org/hg/audio/raw-file/tip/streams/StreamProcessing.html">Media Processing API </a> | <a href="https://dvcs.w3.org/hg/audio/raw-file/tip/streams/StreamProcessing.html">Media Processing API </a> | ||
=== Audio Tools - PulseAudio, Sox, PESQ === | === Audio Tools - PulseAudio, Sox, PESQ === | ||