    VirtualThreadPacketReader(uint8_t stream_id, Sirikata::MuxReader * mr, VP8ComponentDecoder::SendToVirtualThread*base) {
        this->base = base;
        this->stream_id = stream_id;
        this->mux_reader_ = mr;
        last = NULL;
    }
    VirtualThreadPacketReader(uint8_t stream_id, Sirikata::MuxReader * mr, VP8ComponentDecoder::SendToVirtualThread*base) {
        this->base = base;
        this->stream_id = stream_id;
        this->mux_reader_ = mr;
        last = NULL;
    }