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camerabin2: Use custom renegotiate event

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Adds a custom renegotiate event that is pushed to the camerasrc pad
that needs renegotiation due to the user selecting a new capture
caps for that pad.

This is a way of notifying the source that it should update its caps, even
if it doesn't use pad allocs.
This commit is contained in:
Thiago Santos 2010-12-15 14:05:54 -03:00
parent b1a361b566
commit 1e6be5ec56
1 changed files with 39 additions and 2 deletions
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41
gst/camerabin2/gstcamerabin2.c
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@ -135,6 +135,13 @@ gst_camera_bin_change_state (GstElement * element, GstStateChange trans);
/* Camerabin functions */
static GstEvent *
gst_camera_bin_new_event_renegotiate (void)
{
return gst_event_new_custom (GST_EVENT_CUSTOM_BOTH,
gst_structure_new ("renegotiate", NULL));
}
static void
gst_camera_bin_start_capture (GstCameraBin * camerabin)
{
@ -550,13 +557,43 @@ gst_camera_bin_set_property (GObject * object, guint prop_id,
case PROP_CAMERA_SRC:
gst_camera_bin_set_camera_src (camera, g_value_get_object (value));
break;
case PROP_IMAGE_CAPTURE_CAPS:
case PROP_IMAGE_CAPTURE_CAPS:{
GstPad *pad = NULL;
if (camera->src)
pad =
gst_element_get_static_pad (camera->src,
GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME);
/* set the capsfilter caps and notify the src to renegotiate */
g_object_set (camera->imagebin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
if (pad) {
GST_DEBUG_OBJECT (camera, "Pushing renegotiate on %s",
GST_PAD_NAME (pad));
GST_PAD_EVENTFUNC (pad) (pad, gst_camera_bin_new_event_renegotiate ());
gst_object_unref (pad);
}
}
break;
case PROP_VIDEO_CAPTURE_CAPS:
case PROP_VIDEO_CAPTURE_CAPS:{
GstPad *pad = NULL;
if (camera->src)
pad =
gst_element_get_static_pad (camera->src,
GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME);
/* set the capsfilter caps and notify the src to renegotiate */
g_object_set (camera->videobin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
if (pad) {
GST_DEBUG_OBJECT (camera, "Pushing renegotiate on %s",
GST_PAD_NAME (pad));
gst_pad_push_event (pad, gst_camera_bin_new_event_renegotiate ());
gst_object_unref (pad);
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);