TPEPlatform/2013-09-05

Media

gUM

• bug 898949 - [B2G getUserMedia] Display front/back camera list on permission prompt \ SC
• bug 905701 - Support application preferences for cameras and mics in getUserMedia() prompts (B2G) \ SC
  • provide available cameras and default value to prompt UI

Media Recording

• bug 881840 - [MediaEncoder] Implement VP8 video track encoder / Benjamin
  • implement VP8TrackEncoder
    • dump the VP8 encoded frames into IVF container format played by vlc

Streaming Media

WebRTC

• bug 869869 - e10s for UDP socket / SC
  • pending, checking other failure/crash on try server
  • patch submitted and wait for review, get 3/4 r+'ed
• bug 901805 - reporting network activity in nsUDPSocket / SC
  • get all 2 patches r+'ed.

• OMX codec for WebRTC / John Lin
  • successful 2 way video communication
  • issues found
    • serious frame drop due to low min bitrate parameter. Can be avoid by increasing the number.
    • bad image quality especially when high motion. Can be avoid by increasing encoding bitrate parameter.
    • high decoder CPU usage (~30%) due to OMX buffer memcpy(~28ms for ~470K data). Need to use graphic buffer instead.
    • video freeze because of decoder time-out. Need further investigation.

Graphic

Rendering Profiler

• bug 909192 - Layer tree snapshot on demand /Jerry
  • Test layer dump function in b2g
• Use FIFO instead of "android setprop" to set debug property

Nexus 4 JB support

• bug 912373 - Support colorlayer for generic HWComposer, like MDP /Jerry
  • If hwc doesn't support COLOR_FILL, create a graphic buffer and fill the color using cpu in HWcomposer2D.

Study

• new stagefright codec API / John Lin
  • threading helpers: AHandler, AMessage, ALooper,...