umlaeute/v4l2loopback — pull request #13 by an146 (2012-02-17 13:42:05+00:00)
Title: feature: fix format

'keep_format' sysfs parameter implemented, allowing for device to keep ready_for_capture even if it's closed by all openers. This is useful for initializing the device sending a single frame there, so readers can open it even when there's no writer (but we know the format beforehand), and receive placeholder frames.