Merge "BufferQueueProducer: Throttle EGL frame production." into lmp-mr1-dev

    uint32_t mStickyTransform;

    // This saves the fence from the last queueBuffer, such that the

    // next queueBuffer call can throttle buffer production. The prior

    // queueBuffer's fence is not nessessarily available elsewhere,

    // since the previous buffer might have already been acquired.

    sp<Fence> mLastQueueBufferFence;

}; // class BufferQueueProducer

} // namespace android

    mCore(core),

    mSlots(core->mSlots),

    mConsumerName(),

    mStickyTransform(0) {}

    mStickyTransform(0),

    mLastQueueBufferFence(Fence::NO_FENCE) {}

BufferQueueProducer::~BufferQueueProducer() {}

        ATRACE_INT(mCore->mConsumerName.string(), mCore->mQueue.size());

    } // Autolock scope

    // Wait without lock held

    if (mCore->mConnectedApi == NATIVE_WINDOW_API_EGL) {

        // Waiting here allows for two full buffers to be queued but not a

        // third. In the event that frames take varying time, this makes a

        // small trade-off in favor of latency rather than throughput.

        mLastQueueBufferFence->waitForever("Throttling EGL Production");

        mLastQueueBufferFence = fence;

    }

    // Call back without lock held

    if (listener != NULL) {

        listener->onFrameAvailable();