Method Add

tests/VideoCacheThread.cpp:364–370

        InterruptingCache(int64_t maxb, TestableVideoCacheThread* t)
            : CacheMemory(maxb), tcb(t) {}
        void Add(std::shared_ptr<openshot::Frame> frame) override {
            int64_t idx = frame->number;  // use public member 'number'
            CacheMemory::Add(frame);
            if (idx == 23) {
                tcb->forceUserSeekFlag();
            }
        }
    } interruptingCache(/*max_bytes=*/100000000, &thread);

    bool wasFull = thread.prefetchWindow(&interruptingCache,