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camerabin2: Flush downstream after setting src to READY

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v4l2src requires all buffers to come back in order to cleanly stop
streaming. Flushing the pipline should force all buffers to come
back.

https://bugzilla.gnome.org/show_bug.cgi?id=732741
This commit is contained in:
Nicolas Dufresne 2014-07-07 11:52:18 -04:00 committed by Nicolas Dufresne
parent c534ad8e81
commit 5e4e572335
1 changed files with 12 additions and 0 deletions
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12
gst/camerabin2/gstwrappercamerabinsrc.c
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@ -826,10 +826,22 @@ start_image_capture (GstWrapperCameraBinSrc * self)
GST_TYPE_PHOTOGRAPHY);
gboolean ret = FALSE;
GstCaps *caps;
GstPad *pad, *peer;
GST_DEBUG_OBJECT (self, "Starting image capture");
gst_element_set_state (self->src_vid_src, GST_STATE_READY);
/* FIXME - V4L2 source will not close the device until all buffers have came
* back. Flushing the pipeline, will ensure it's properly closed, and that
* setting it back to PLAYING will work. This is more a workaround then a
* solution to buffer reclaiming. */
pad = gst_element_get_static_pad (self->src_vid_src, "src");
peer = gst_pad_get_peer (pad);
gst_object_unref (pad);
gst_pad_send_event (peer, gst_event_new_flush_start ());
gst_pad_send_event (peer, gst_event_new_flush_stop (TRUE));
gst_object_unref (peer);
if (self->image_renegotiate) {
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);