BufferQueueProducer requestBuffer

BufferQueueProducer::requestBuffer

返回刚才dequeue的slot对应的mGraphicBuffer。

status_t BufferQueueProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
    Mutex::Autolock lock(mCore->mMutex);
    mSlots[slot].mRequestBufferCalled = true;
    *buf = mSlots[slot].mGraphicBuffer;
    return NO_ERROR;
}

典型用法