Merge "AudioFlinger: fix Effects handling for MMapThread"

    // never process effects when:

    // - on an OFFLOAD thread

    // - no more tracks are on the session and the effect tail has been rendered

    bool doProcess = (thread->type() != ThreadBase::OFFLOAD);

    bool doProcess = (thread->type() != ThreadBase::OFFLOAD)

                  && (thread->type() != ThreadBase::MMAP);

    if (!isGlobalSession) {

        bool tracksOnSession = (trackCnt() != 0);