Summary

In this chapter, we walked through the user space implementation of V4L2. We started with V4L2 buffer management, from video streaming. We also learned how to deal with video device property management, all from user space. However, V4L2 is a heavy framework, not just in terms of code but also in terms of power consumption. So, in the next chapter, we will address Linux kernel power management in order to keep the system at the lowest consumption level possible without degrading the system properties.