TPEPlatform/2013-12-12

Media

Media Recording

• bug 879668 - [MediaEncoder] Implement OmxTrackEncoder on B2G / John Lin
  • revise patch to address review comments and upload again.
  • study Mozilla GTest tests.

• bug 879669 - Support Video Encoder module in MediaEncoder framework. / Randy
  • Got r+ for media encoder and I would open another to land it.
• bug 891705 - [MediaEncoder] Implement WebM 1.0 container writer. / Randy
  • Can link to libmkv and do embl compositor, The result data can be parsed but video fps seems wrong.

GetUserMedia

• bug 898949 - [B2G getUserMedia] Display front/back camera list on permission prompt / SC
  • r+ from @fabrice, but need test case for it.
  • some more work need to be done for contact permission (PermissionPromptHelper/PermissionPromptService)
• bug 947010 - Create automation test for recording status / SC
  • survey our existing test framework, will use marionette for it.

Media

• bug 916399 - Intermittent test_timeupdate_small_files.html | Test timed out / JW
  • run tests on try server
  • review code of related bug: Bug 860760, Bug 872462
  • buffer timeout caused by broken implementation of OMXCodec::pause
  • calling OMXCodec::start won't leave paused state and return error
• openh264 / JW
  • trace code, run test program
  • discucss with Ekr, write unit tests with GTest

Graphic

• bug 937713 - [B2G] Display does not respond or responds too slowly to device rotation. /vilin
  • Main thread didn't send update to Compositor. Investigating why nsWindow:onDraw() is not called.

• bug 946952 - Layer tree during Camera preview is inconsistent. /vilin
  • Background layer sometimes will be ColorLayer or ThebesLayer
  • Make Image Layer fit to display resolution and see if background layer will be removed.

• bug 947504 - [v1.3] Screen colors are off and display blinks /vilin
  • HWComposer issue. Lack of HWComposer patch in v1.3 code.

• bug 944564 - [B2G] Page transition in Homescreen can't reach 60fps stably. /vilin
  • Breaking down 3 problems cause this.
    • ProcessRestyles() is missed(not called) randomly even touch event is received and tick is fired.
      • bug 862276 - reduce costs from descendants of simple dynamic style changes (e.g., changing 'transform' in style attribute)
    • Input event sometimes being queued in B2G main thread when B2G is busy.(e.g GC is ongoing) Then it can't be transmitted to Homescreen in time.
      • bug 930939 - (input-thread) Separate the threads that run gecko and that receive input events from the OS
      • Take advantage of InputManager ?
        • "InputRead" thread takes care of event receiving ; "InputDispatcher" thread takes care of event dispatch
        • An option, but dispatch touch event() will run gecko code(reflow). How to decouple event dispatch and reflow ?
    • Timer for nsRefreshDriver sometimes lags a lot.
      • Need more investigation ...

• bug 941984 - [FlatFish] InputReader takes ~18ms to get each event. Makes FPS bounded at ~50fps. /vilin
  • Device-specific problem in driver(also happened when it's running on Android). Partner is sitll investigating...

• bug 893304 - Convert CanvasClientWebGL (and Host) to the new textures /Morris
  • Resolved some test failure on try server
  • Wait for review

Study

• bug 925615 - Support Wifi Display /vichen
  • Study WFD related Spec
  • Trace Gecko Layout
• imageLib / SC
  • loading/decoding/rendering process
  • MemShrink facilities we already have