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Maybe this made sense at some point in the original code, but the
way I have this setup currently get_frame() should strictly
capture a frame on every tick of the timer at the desired FPS to
the best of its ability.
The capture_frameno gets propagated to the encoder whenever a new
frame is acquired on that timer. When the encoder consumes it,
it should just dupe the frame to fill any gaps between the last
encoded frameno and the new one.
As-is, this avd value seems to drift permanently negative
eventually at which point get_frame() ceases ever waiting on the
timer. That's obviously broken, and devolves into a pinned CPU
with get_frame() attempting an infinitely high frame rate. Which
likely just makes things worse not better by starving the encoder
of CPU time.
I need to go check out the encoder now to make sure it fills
frameno gaps.
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rmdGetFrame() can't just block on pause_cond because it services the
event loop, which may be the very thing responsible for unpausing
when not triggered by an external signal.
The existing code handles this correctly but it spins on polling
the paused flag and running the event loop when paused.
This commit just adds a short delay to that cycle so the rmdGetFrame
thread doesn't pointlessly burn CPU while paused.
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Now users can easily differentiate which rmd subtasks are
busy by using top-like tools in show-threads mode.
Also aids in troubleshooting...
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This restores the recordmydesktop/ subdir as root from the mirror I
cloned by fork from.
I have no particular interest in the gtk/qt frontends and it doesn't
appear they were part of a single tree in the past. But I will
probably preserve backwards compatibility of the cli so they can
continue to work with this fork installed.
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