Merge "Added number of encoded frames and duration to the MPEG4Writer::Track::dump"

    int64_t mMaxChunkDurationUs;

    bool mIsRealTimeRecording;

    int64_t mMaxTimeStampUs;

    int64_t mEstimatedTrackSizeBytes;

    int64_t mMdatSizeBytes;

    int32_t mTimeScale;

    snprintf(buffer, SIZE, "       reached EOS: %s\n",

            mReachedEOS? "true": "false");

    result.append(buffer);

    snprintf(buffer, SIZE, "       frames encoded : %d\n", mNumSamples);

    result.append(buffer);

    snprintf(buffer, SIZE, "       duration encoded : %lld us\n", mTrackDurationUs);

    result.append(buffer);

    ::write(fd, result.string(), result.size());

    return OK;

}

      mStarted(false),

      mTrackId(trackId),

      mTrackDurationUs(0),

      mNumSamples(0),

      mEstimatedTrackSizeBytes(0),

      mSamplesHaveSameSize(true),

      mCodecSpecificData(NULL),