Is it possible to flush the buffers if they are queued inside the decoder (encoder) before closing the device or this will lead to memory leaks?
How critical is this? What are the possible scenarios for flushing buffers if the device is open in non-blocking mode?
After the call
v4l2_ioctl (fd, VIDIOC_REQBUFS, & reqbufs);
when reqbufs.count = 0 all buffers can be freed safely, regardless of whether it is queued. This is true?
Is there a difference in the behavior of the buffers MMAP and DMA memory type?