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

Shelly:

• bug 895730 - MediaRecorder - Can't get any encoded data from encoder when recording the mediaStream with mute audio
  • review+, landed.
• bug 894341 - MediaRecorder Assertion failure !ogg_stream_eos(&mOggStreamState) (No data can be written after eos has marked.) and crash [@mozilla::OggWriter::WriteEncodedTrack]
  • review+, landed.
• bug 899935 - Stopping the MediaRecorder does not recieve a TRACK_EVENT_ENDED event from callback
  • Issue reported.
• bug 899030 - [MediaEncoder] Use PR_LOG to print debugging info
  • Issue reported.
• bug 900811 - Media Recording - Encoder fail to shutdown when closing the browser tab during recording a fake gUM
• bug 900427 - Media Recording - encoder can't be cancelled

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 in a way to avoid scatter therelated code and pass GLContext around

Free Agent

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

Study

• Compositor: Studying CompositorEffect /Morris
• Texture: Finding out use case for each texture type /Morris
• Input device: Studying Camera/Microphone control path / SC
• Input device: Trace GonkCamera code / slee
• Container: WebM vs MP4 container /Randy
• Audio: Trace code - AudioSegment / JW
• Rendering: Canvas2D rendering flow /Jerry
• Rendering: ImageBridge/Parent rendering flow /Jerry
• ImageCapture: Spec on W3C. / Shelly
• Web Animations: Shelly
• Rendering: SVG /Chiajung
• Misc: OpenCL /Chiajung

Team Meeting

• Alfredo
  • Handle getUserMedia permission dialog
• Randy
  • Fix audio record bug
  • Study WebM
• Shelly
  • Fix audio recording bug
  • ImageCapture
• Benjamin
  • RTSP seek bug
  • 3GPP/3G2/MPE P4 container
• John
  • Link stagefright with webrtc
  • yuv color conversion
• Peter
  • Fix SkiaGL code
• Morris
  • HW composor
  • Texture type use case
  • Study change in Android 4.3
• Jerry
  • Canvas2D rendering
  • ImageBridge
• KanRu
  • EventHandling
  • window resize
  • keyborad API
• SC
  • E10S performance(2%)
  • E10S permission
  • Study Camera
  • OTA bug fix
• Steven
  • Trace GonkCamera
• JW
  • Fix two web audio issues.