tracker/pt: add more robust camera retry

Some cameras can't produce frames right after the
capture is opened. Adjust the delay to something more
sane.

It has a strange effect of not crashing PS3 Eye as
often, but that needs more testing (and crashes).

1 files changed, 2 insertions, 2 deletions

diff --git a/tracker-pt/module/camera.cpp b/tracker-pt/module/camera.cpp
index 14b565b6..e2edfcb6 100644
--- a/tracker-pt/module/camera.cpp
+++ b/tracker-pt/module/camera.cpp
@@ -151,11 +151,11 @@ bool Camera::_get_frame(cv::Mat& frame)
 {
     if (cap && cap->isOpened())
     {
-        for (int i = 0; i < 5; i++)
+        for (unsigned i = 0; i < 10; i++)
         {
             if (cap->read(frame))
                 return true;
-            portable::sleep(1);
+            portable::sleep(50);
         }
     }
     return false;