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The reason why no timeout is needed is twofold:
When the stream is off extensive periods of time can pass without an
event occurring if the host doesn't send any UVC request. As that period
of time is unbound, we can't set any meaningful timeout.
When the stream is on buffers are supposed to flow constantly. If
buffers stop flowing that would indicate a bug somewhere in the stack,
which could be caught by a timeout, but that we wouldn't be able to
recover from anyway.
The timeout is thus not needed and harmful when the stream is off.
Remove it.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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glibc version 2.27 warns that _BSD_SOURCE is deprecated in favour of _DEFAULT
_SOURCE:
# warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use
_DEFAULT_SOURCE"
Fix the source code accordingly.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add events to the watch list allocates memory. Add a cleanup function to
free all memory at cleanup time without having to remove all events
explicitly one by one.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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If a single file descriptor is being watch for multiple event types, it
will be present in multiple entries in the watch list. The
events_unwatch_fd() function will remove the first entry regardless of
its type, not allowing removal of a particular event type.
Fix this by extending the events_unwatch_fd() API to take an event type,
and remove the corresponding entry.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The omap3-isp-live project [1] includes a generic event handling library
that implements a select-based loop. Instead of reinventing the wheel,
import the library and use it.
The original license hasn't been modified, and includes both GPL-2.0+
and LGPL-2.1+ code. The sole copyright owner is Laurent Pinchart.
[1] git://git.ideasonboard.org/omap3-isp-live.git
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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