cam: Cache buffer memory mapping

With the buffer allocator in use it's possible to cache the dmabuf
memory mappings when starting the camera instead of mapping and
unmapping them each time.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/cam/capture.cpp b/src/cam/capture.cpp
index dd078eb0..738fa1c2 100644
--- a/src/cam/capture.cpp
+++ b/src/cam/capture.cpp
@@ -116,6 +116,9 @@ int Capture::capture(EventLoop *loop, FrameBufferAllocator *allocator)
 					  << std::endl;
 				return ret;
 			}
+
+			if (writer_)
+				writer_->mapBuffer(buffer.get());
 		}
 
 		requests.push_back(request);