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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-03-23 02:34:36 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-03-24 10:34:08 +0200
commit5816c0c38e2a7dce1bcbf88f9fdcc330358eea8d (patch)
treeadde4d8b21ea218f3d7e6500e8a9dc1fe6376600 /test/camera/buffer_import.cpp
parentac828f937e5426d48f996a29e70ff1a6ab5c85e6 (diff)
qcam: viewfinder: Avoid memory copy when conversion isn't needed
If the frame buffer format is identical to the display format, the viewfinder still invokes the converter to perform what is essentially a slow memcpy(). Make it possible to skip that operation by creating a QImage referencing the buffer memory instead. A reference to the frame buffer is kept internally, and released when the next buffer is queued, pushing the current one out. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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