test: v4l2_videodevice: Increase timeout for vimc capture tests

On slower machines, a 10s timeout to capture frames with vimc can be too
short and cause test failures. Make the timeout proportional to the
number of frames expected to be captured, using a conservative low
estimate of the frame rate at 2fps. This does not increase the test time
if the vimc driver is fast enough to produce frames.

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

1 files changed, 7 insertions, 4 deletions

diff --git a/test/v4l2_videodevice/capture_async.cpp b/test/v4l2_videodevice/capture_async.cpp
index 42e1e671..67366461 100644
--- a/test/v4l2_videodevice/capture_async.cpp
+++ b/test/v4l2_videodevice/capture_async.cpp
@@ -61,10 +61,12 @@ protected:
 		if (ret)
 			return TestFail;
 
-		timeout.start(10000ms);
+		const unsigned int nFrames = 30;
+
+		timeout.start(500ms * nFrames);
 		while (timeout.isRunning()) {
 			dispatcher->processEvents();
-			if (frames > 30)
+			if (frames > nFrames)
 				break;
 		}
 
@@ -73,8 +75,9 @@ protected:
 			return TestFail;
 		}
 
-		if (frames < 30) {
-			std::cout << "Failed to capture 30 frames within timeout." << std::endl;
+		if (frames < nFrames) {
+			std::cout << "Failed to capture " << nFrames
+				  << " frames within timeout." << std::endl;
 			return TestFail;
 		}