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dc1394src: check for disabled transmission in _stop_cam

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For symetry with _start_cam, check that the transmission
is effectively disabled in _stop_cam.

https://bugzilla.gnome.org/show_bug.cgi?id=763026
This commit is contained in:
Joan Pau Beltran 2016-06-17 14:31:42 +02:00 committed by Tim-Philipp Müller
parent eb0a785841
commit dc762166f3
1 changed files with 22 additions and 0 deletions
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22
ext/dc1394/gstdc1394src.c
View file

@ -658,7 +658,15 @@ static gboolean
gst_dc1394_src_stop_cam (GstDC1394Src * src)
{
dc1394error_t ret;
dc1394switch_t status;
guint trials;
/*
* TODO: dc1394_capture_setup/stop can start/stop the transmission
* when called with DC1394_CAPTURE_FLAGS_AUTO_ISO in the flags.
* The repeated trials check is a leftover of the original code,
* and might not be needed.
*/
GST_DEBUG_OBJECT (src, "Disable camera transmission.");
ret = dc1394_video_set_transmission (src->camera, DC1394_OFF);
if (ret != DC1394_SUCCESS) {
@ -667,6 +675,20 @@ gst_dc1394_src_stop_cam (GstDC1394Src * src)
dc1394_error_get_string (ret)));
return FALSE;
}
ret = dc1394_video_get_transmission (src->camera, &status);
for (trials = 10;
(trials > 0) && !(ret == DC1394_SUCCESS && status == DC1394_OFF);
trials--) {
GST_DEBUG_OBJECT (src,
"Wait for camera to stop transmission (%d trials left).", trials);
g_usleep (50000);
ret = dc1394_video_get_transmission (src->camera, &status);
}
if (!(ret == DC1394_SUCCESS && status == DC1394_OFF)) {
GST_WARNING_OBJECT (src,
"Could not get negative transmission status: %s.",
dc1394_error_get_string (ret));
}
GST_DEBUG_OBJECT (src, "Clear capture resources.");
ret = dc1394_capture_stop (src->camera);