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Commit ae23aaee authored by James Dong's avatar James Dong
Browse files

Add avg bandwidth estimate every 2 seconds - do not merge. 

This patch is meant for testing only.
We will remove this patch once we tracked down all those spinning issues.

related-to-bug: 4339075

Change-Id: I4cf1927f1067d4f7dbc589ceb3c47407eaf40ae7
parent 84f64d2a

media/libstagefright/NuHTTPDataSource.cpp

+11 −0
Original line number Diff line number Diff line
@@ -100,6 +100,7 @@ NuHTTPDataSource::NuHTTPDataSource(uint32_t flags) 
      mNumBandwidthHistoryItems(0),

      mTotalTransferTimeUs(0),

      mTotalTransferBytes(0),

      mPrevBandwidthMeasureTimeUs(0),

      mDecryptHandle(NULL),

      mDrmManagerClient(NULL) {

}
@@ -534,6 +535,16 @@ void NuHTTPDataSource::addBandwidthMeasurement_l( 
        mTotalTransferBytes -= entry->mNumBytes;

        mBandwidthHistory.erase(mBandwidthHistory.begin());

        --mNumBandwidthHistoryItems;

        int64_t timeNowUs = ALooper::GetNowUs();

        if (timeNowUs - mPrevBandwidthMeasureTimeUs > 2000000LL) {

            if (mPrevBandwidthMeasureTimeUs != 0) {

                double estimatedBandwidth =

                    ((double)mTotalTransferBytes * 8E3 / mTotalTransferTimeUs);

                LOGI("estimated avg bandwidth is %8.2f kbps in the past %lld us",

                    estimatedBandwidth, timeNowUs - mPrevBandwidthMeasureTimeUs);

            }

            mPrevBandwidthMeasureTimeUs = timeNowUs;

        }

    }

}

media/libstagefright/include/NuHTTPDataSource.h

+1 −0
Original line number Diff line number Diff line
@@ -97,6 +97,7 @@ private: 
    size_t mNumBandwidthHistoryItems;

    int64_t mTotalTransferTimeUs;

    size_t mTotalTransferBytes;

    int64_t mPrevBandwidthMeasureTimeUs;



    DecryptHandle *mDecryptHandle;

    DrmManagerClient *mDrmManagerClient;