am f3a892ab: Merge "AudioFlinger: mix track only when really ready" into ics-mr1

        // The first time a track is added we wait

        // for all its buffers to be filled before processing it

        mAudioMixer->setActiveTrack(track->name());

        if (cblk->framesReady() && track->isReady() &&

        // make sure that we have enough frames to mix one full buffer

        uint32_t minFrames = 1;

        if (!track->isStopped() && !track->isPausing()) {

            if (t->sampleRate() == (int)mSampleRate) {

                minFrames = mFrameCount;

            } else {

                minFrames = (mFrameCount * t->sampleRate()) / mSampleRate + 1;

            }

        }

        if ((cblk->framesReady() >= minFrames) && track->isReady() &&

                !track->isPaused() && !track->isTerminated())

        {

            //ALOGV("track %d u=%08x, s=%08x [OK] on thread %p", track->name(), cblk->user, cblk->server, this);