TPEPlatform/2013-08-01

Media

Media Recorder

• Bug 898952 - Media Recording - Avoid to record a stopped MediaStream /rlin
  • r+ for fixing memory leak, provide test case.
• Bug 896353 - Media Recording - Can't record the mediaStream created by AudioContext. /rlin
  • r+, wait roc's patch for TrackUnionStream.h track's tick problem.
• Bug 898343 - gUM - [B2G getUserMedia] Use ContentPermissionPrompt to display microphone permission prompt/Alfredo
  • in patch revew process
• Bug 853356 - gUM - [B2G getUserMedia] Display camera/ microphone permission acquisition prompt - permission name proposal patch /Alfredo
• Bug 898986 - gUM - [B2G getUserMedia] Display correct string and icon for gUM audio permission dialog./Alfredo
  • dicuss the implementation design

Web Audio

• bug 875277 - Implement WaveShaperNode.oversample / JW
  • trace code - up/down sampler
  • blink up/down sampler integration
  • implement based on libspeex
• bug 878015 - WebAudio ASSERTION: Something went wrong with rounding to block boundaries: 't == aTo' / JW
  • debug round up error in some corner cases

Streaming Media

WebRTC

• Bug 869869 - e10s for UDP socket / SC
  • update patch according to review comment and waiting for review
  • measure e10s overhead, about 2% cpu overhead
  • fixing UDP test case fail on Windows platform
• Bug 896391 - memcpy from camera preview's GraphicBuffer is slow / slee
  • MediaEngineWebRTCVideoSource can input 2 kinds of buffers into MSG(There are still some problems need to fix)
• Prototyping HW codec support for WebRTC on B2G / John Lin
  • implement WebRTC external codec using stagefright OMXCodec API

Graphic

Canvas 2D/SkiaGL bug 858237

• bug 864222 - Fail to lanuch everything.me with skiaGL Canvas / peter
  • Works on m-c because of canvas contenxt demote patch
• bug 899408- [B2G]Fail to enable skiaGL canvas because white list checking / peter
  • Attached debug patch
• Profiling "Cut the rope" low fps with skiaGL canvas / peter
  • mac could run upto 60 fps but b2g only got 8 fps
  • Found some issues related canvas context demote patch
• bug 880114 - Enhance render video-to-canvas2D performance by GPU-based color space conversion / chiajung
  • Start to implement it and check webGL equivalent part against spec.

Free Agent

Study

• Studying CompositorEffect /Morris
• Finding out use case for each texture type /Morris
• Studying Camera/Microphone control path / SC
• Trace GonkCamera code / slee
• WebM vs MP4 container /Randy
• Trace code - AudioSegment / JW
• Canvas2D rendering flow /Jerry
• ImageBridge/Parent rendering flow /Jerry

OTA

• Bug 888833 - [OTA] After tried to manually check for updates, it showed error message / SC
  • investigating the reason of TCP timeout while accessing leo update server
  • see dup/out-of-sync packet in tcpdump, should be a problem in server side.

Tools introductions

• https://taiwan.etherpad.mozilla.org/267 / slee
  • Thanks Cervantes's and JW's help

Event Handling

• bug 845169 - Target events "properly" at overlapping app frames /Kanru
  • Implemented async hit region update.
  • First round of review.
• bug 847763 - Prevent virtual keyboard iframe from getting focus /Kanru
  • Decided to add a new attribute "ignore-focus" for mozbrowser
  • Should be very straightforward to implement