protected final boolean isPassive() {
        return mPassive;
    }
Flag for passive mode. When a decoder is in passive mode, it does not actively control
the extractor, because the extractor is controlled from another decoder instance. It does
therefore also not execute any operations that affect the extractor in any way (e.g. seeking).
MediaPlayer/src/main/java/net/protyposis/android/mediaplayer/MediaCodecDecoder.java