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Commit bd4f7b89 authored by James Dong's avatar James Dong Committed by Android Git Automerger
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am 79c56d3f: Merge "Reduce the frequency of IDR frames and add intra-fresh... 

am 79c56d3f: Merge "Reduce the frequency of IDR frames and add intra-fresh mode support for WiFi display" into jb-mr1.1-dev

* commit '79c56d3f':
  Reduce the frequency of IDR frames and add intra-fresh mode support for WiFi display
parents 296cb9dd 79c56d3f

media/libstagefright/wifi-display/source/Converter.cpp

+18 −1
Original line number Diff line number Diff line
@@ -161,7 +161,24 @@ status_t Converter::initEncoder() { 
        mOutputFormat->setInt32("bitrate", videoBitrate);

        mOutputFormat->setInt32("bitrate-mode", OMX_Video_ControlRateConstant);

        mOutputFormat->setInt32("frame-rate", 30);

        mOutputFormat->setInt32("i-frame-interval", 1);  // Iframes every 1 secs

        mOutputFormat->setInt32("i-frame-interval", 15);  // Iframes every 15 secs



        // Configure encoder to use intra macroblock refresh mode

        mOutputFormat->setInt32("intra-refresh-mode", OMX_VIDEO_IntraRefreshCyclic);



        int width, height, mbs;

        if (!mOutputFormat->findInt32("width", &width)

                || !mOutputFormat->findInt32("height", &height)) {

            return ERROR_UNSUPPORTED;

        }



        // Update macroblocks in a cyclic fashion with 10% of all MBs within

        // frame gets updated at one time. It takes about 10 frames to

        // completely update a whole video frame. If the frame rate is 30,

        // it takes about 333 ms in the best case (if next frame is not an IDR)

        // to recover from a lost/corrupted packet.

        mbs = (((width + 15) / 16) * ((height + 15) / 16) * 10) / 100;

        mOutputFormat->setInt32("intra-refresh-CIR-mbs", mbs);

    }



    ALOGV("output format is '%s'", mOutputFormat->debugString(0).c_str());