Media/WebRTC/WebRTC Debugging: Difference between revisions

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Media/WebRTC/WebRTC Debugging (view source)

Revision as of 16:43, 10 August 2023

2,011 bytes added ,  10 August 2023
Adding logging modules table
(Adding profiling link)
(Adding logging modules table)
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==Logging==
==Logging==
Logging can be enabled through the "Enable WebRTC Log Preset" button at the bottom of [about:webrtc]. Alternatively one can set the following environment variable:<syntaxhighlight language="shell">MOZ_LOG="jsep:5,sdp:5,signaling:5,mtransport:5,RTCRtpReceiver:5,RTCRtpSender:5,RTCDMTFSender:5,VideoFrameConverter:5,WebrtcTCPSocket:5,CamerasChild:5,CamerasParent:5,VideoEngine:5,ShmemPool:5,TabShare:5,MediaChild:5,MediaParent:5,MediaManager:5,MediaTrackGraph:5,cubeb:5,MediaStream:5,MediaStreamTrack:5,DriftCompensator:5,ForwardInputTrack:5,MediaRecorder:5,MediaEncoder:5,TrackEncoder:5,VP8TrackEncoder:5,Muxer:5,GetUserMedia:5,MediaPipeline:5,PeerConnectionImpl:5,WebAudioAPI:5,webrtc_trace:5,RTCRtpTransceiver:5,ForwardedInputTrack:5,HTMLMediaElement:5,HTMLMediaElementEvents:5"</syntaxhighlight> Note that webrtc_trace will not be active until "Enable WebRTC Log Preset" is pressed.
Logging can be enabled through the "Enable WebRTC Log Preset" button at the bottom of [about:webrtc]. Alternatively one can set the following environment variable:<syntaxhighlight language="shell">MOZ_LOG="jsep:5,sdp:5,signaling:5,mtransport:5,RTCRtpReceiver:5,RTCRtpSender:5,RTCDMTFSender:5,VideoFrameConverter:5,WebrtcTCPSocket:5,CamerasChild:5,CamerasParent:5,VideoEngine:5,ShmemPool:5,TabShare:5,MediaChild:5,MediaParent:5,MediaManager:5,MediaTrackGraph:5,cubeb:5,MediaStream:5,MediaStreamTrack:5,DriftCompensator:5,ForwardInputTrack:5,MediaRecorder:5,MediaEncoder:5,TrackEncoder:5,VP8TrackEncoder:5,Muxer:5,GetUserMedia:5,MediaPipeline:5,PeerConnectionImpl:5,WebAudioAPI:5,webrtc_trace:5,RTCRtpTransceiver:5,ForwardedInputTrack:5,HTMLMediaElement:5,HTMLMediaElementEvents:5"</syntaxhighlight> Note that webrtc_trace will not be active until "Enable WebRTC Log Preset" is pressed.
 
{| class="wikitable sortable"
|-
! Module !! Component !! Function !! Notes
|-
| jsep || signalling || JSEP state machine ||
|-
| sdp || signalling || SDP parsing ||
|-
| mtransport || networking || network transports ||
|-
| RTCRtpReceiver || networking || receiving media and media control packets ||
|-
| RTCRtpSender || networking || sending media and media control packets ||
|-
| RTCDMTFSender || networking || sending DTMF messages ||
|-
| VideoFrameConverter || ? || ? ||
|-
| WebrtcTCPSocket || networking || ? ||
|-
| CamerasChild || media capture || Content process end of IPC channel for receiving frames from media capture devices ||
|-
| CamerasParent || media capture || Parent process end of IPC channel for sending frames from media capture devices ||
|-
| VideoEngine || media capture || Orchestrates capture of frames from media capture devices in the parent process ||
|-
| ShmemPool || media capture || Object pool of shared memory frame buffers for transferring media capture frames from parent to child process ||
|-
| TabShare || media capture || ?
|-
|- MediaChild || media || ?
|-
|- MediaParent || media || ?
|-
|- MediaManager || media || ?
|-
|- MediaTrackGraph || media || ?
|-
|- cubeb || media || ?
|-
|- MediaStream || media || ?
|-
|- MediaStreamTrack || media || ?
|-
|- DriftCompensator || media || ?
|-
|- ForwardInputTrack || media || ?
|-
|- MediaRecorder || media || ?
|-
|- MediaEncoder || media || ?
|-
|- TrackEncoder || media || ?
|-
|- VP8TrackEncoder || media || ?
|-
|- Muxer || media || ?
|-
|- MediaPipeline || network || ??? delivers media packets from the transport
|-
|- PeerConnectionImpl || JS API || implements the RTCPeerConnection object
|-
|- WebAudioAPI || ?? || ?
|-
|- webrtc_trace || webrtc || libwebrtc logging || needs to be enabled from [about:webrtc]
|-
|- RTCRtpTransceiver || JS API || implements the RTCRtpTransceiver object
|-
|- ForwardedInputTrack || ?? || ?
|-
|- HTMLMediaElement || ?? || ?
|-
|- HTMLMediaElementEvents || ?? || ?
|-
|}
==Profiling==
==Profiling==
One can use the "WebRTC" preset on the [about:logging] page with the [https://profiler.firefox.com/ Firefox Performance Profiler].
One can use the "WebRTC" preset on the [about:logging] page with the [https://profiler.firefox.com/ Firefox Performance Profiler].
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