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camerabin2: Check zoom notify callback from camera-source

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Camerabin2 has a zoom property that is simply proxied to its
internal camera-source element. This patch makes camerabin2 listen
to 'notify' signals from it so it can update its zoom property value
when camera-source changes its zoom as a side-effect of another operation
or because the user set the zoom directly to it, instead of doing
it from camerabin2.
This commit is contained in:
Thiago Santos 2011-09-12 16:50:10 -03:00
parent f33b78abd1
commit 00e635e786
1 changed files with 13 additions and 0 deletions
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13
gst/camerabin2/gstcamerabin2.c
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@ -1152,6 +1152,17 @@ gst_camera_bin_src_notify_max_zoom_cb (GObject * self, GParamSpec * pspec,
g_object_notify (G_OBJECT (camera), "max-zoom");
}
static void
gst_camera_bin_src_notify_zoom_cb (GObject * self, GParamSpec * pspec,
gpointer user_data)
{
GstCameraBin2 *camera = (GstCameraBin2 *) user_data;
g_object_get (self, "zoom", &camera->zoom, NULL);
GST_DEBUG_OBJECT (camera, "Zoom updated to %f", camera->zoom);
g_object_notify (G_OBJECT (camera), "zoom");
}
static gboolean
gst_camera_bin_image_src_buffer_probe (GstPad * pad, GstBuffer * buf,
gpointer data)
@ -1495,6 +1506,8 @@ gst_camera_bin_create_elements (GstCameraBin2 * camera)
"preview-caps", camera->preview_caps, "preview-filter",
camera->preview_filter, NULL);
}
g_signal_connect (G_OBJECT (camera->src), "notify::zoom",
(GCallback) gst_camera_bin_src_notify_zoom_cb, camera);
g_object_set (camera->src, "zoom", camera->zoom, NULL);
g_signal_connect (G_OBJECT (camera->src), "notify::max-zoom",
(GCallback) gst_camera_bin_src_notify_max_zoom_cb, camera);