Removed unnecessary return and updated the comments

providers/base/bin/camera_test.py

@@ -552,7 +552,10 @@ def _capture_image_gstreamer(self, filename, width, height, pixelformat):
         # Add a timeout of 90 seconds to capture the image
         self.timeout = self.GLib.timeout_add_seconds(90, self._on_timeout)
 
-        # Start the main loop
+        # Start the main loop. If the loop finishes successfully, we will
+        # remove the timeout. If the timeout is reached, we will stop the
+        # pipeline calling the _on_timeout method and stop both the gstreamer
+        # pipeline and the GLib main loop.
         self.main_loop = self.GLib.MainLoop()
         try:
             self.main_loop.run()
@@ -565,7 +568,6 @@ def _capture_image_gstreamer(self, filename, width, height, pixelformat):
         # iteration.
         if self.timeout:
             self.GLib.source_remove(self.timeout)
-        return 0
 
     def _display_image(self, filename, width, height):
         """
@@ -712,17 +714,17 @@ def _get_supported_pixel_formats(self, device, maxformats=5):
 
     def _get_supported_formats(self, device):
         """
-        Query the camera for supported format info for a given pixel_format.
-        Data is returned in a list of dictionaries with supported pixel
-        formats as the following example shows:
-        format_info['pixelformat'] = "YUYV"
-        format_info['description'] = "(YUV 4:2:2 (YUYV))"
-        format_info['resolutions'] = [[width, height], [640, 480], [1280, 720]]
-
-        If we are unable to gather any information from the driver, then we
-        return YUYV and 640x480 which seems to be a safe default.
-        Per the v4l2 spec the ioctl used here is experimental
-        but seems to be well supported.
+                Query the camera for supported format info for a given pixel_format.
+                Data is returned in a list of dictionaries with supported pixel
+                formats as the following example shows:
+                format_info['pixelformat'] = "YUYV"
+                format_info['description'] = "(YUV 4:2:2 (YUYV))"
+                format_info['resolutions'] = [[width, height], [640, 480], [1280, 720]]
+
+                If we are unable to gather any information from the driver, then we
+                return YUYV and 640x480 which seems to be a safe default.
+                Per the v4l2 spec the ioctl used here is experimental
+        ç        but seems to be well supported.
         """
         supported_formats_info = self._get_supported_pixel_formats(device)