cam: Support using multiple cameras concurrently

To allow testing capture from multiple cameras concurrently, turn the
--camera option into an array option, and create one CameraSession per
specified camera. The code is adapted to iterate over the sessions
vector instead of handling a single session. Thanks to all the
refactoring previously performed, changes are minimal.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/cam/camera_session.cpp b/src/cam/camera_session.cpp
index 90261a8c..0d49fc1a 100644
--- a/src/cam/camera_session.cpp
+++ b/src/cam/camera_session.cpp
@@ -250,9 +250,13 @@ int CameraSession::startCapture()
 	}
 
 	if (captureLimit_)
-		std::cout << "Capture " << captureLimit_ << " frames" << std::endl;
+		std::cout << "cam" << cameraIndex_
+			  << ": Capture " << captureLimit_ << " frames"
+			  << std::endl;
 	else
-		std::cout << "Capture until user interrupts by SIGINT" << std::endl;
+		std::cout << "cam" << cameraIndex_
+			  << ": Capture until user interrupts by SIGINT"
+			  << std::endl;
 
 	return 0;
 }