Add camera synchronisation updates #1196
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This is probably less surprising behaviour than leaving it in HDR mode. Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Software sync brings two cameras frames into synchronisation. It takes some time, however, and image metadata tells us when this synchronisation moment has been reached. The extra functionality includes: * The ability for encoders to ignore frames until sync is achieved. * Applications can wait for the encoder to signal that a synchronised recording has actually started. * We can easily capture the very first request where sync was achieved. Some examples and tests also been included. Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
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Some minor extensions to enable sychnronised recording and image capture.
(And one slightly random commit related to tests leave IMX708s in HDR mode.)