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visual: improve negotiation

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Remove the setcaps function on the srcpad, we know exactly when we negotiate a
new format now.
Use a caps event to configure new caps.
This commit is contained in:
Wim Taymans 2011-05-19 12:42:46 +02:00
parent 5619a238c0
commit b2e80a09ca
1 changed files with 4 additions and 7 deletions
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11
ext/libvisual/visual.c
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@ -140,7 +140,6 @@ static gboolean gst_visual_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_visual_src_query (GstPad * pad, GstQuery * query);
static gboolean gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_visual_src_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_visual_getcaps (GstPad * pad, GstCaps * filter);
static void libvisual_log_handler (const char *message, const char *funcname,
void *priv);
@ -220,7 +219,6 @@ gst_visual_init (GstVisual * visual)
gst_element_add_pad (GST_ELEMENT (visual), visual->sinkpad);
visual->srcpad = gst_pad_new_from_static_template (&src_template, "src");
gst_pad_set_setcaps_function (visual->srcpad, gst_visual_src_setcaps);
gst_pad_set_getcaps_function (visual->srcpad, gst_visual_getcaps);
gst_pad_set_event_function (visual->srcpad, gst_visual_src_event);
gst_pad_set_query_function (visual->srcpad, gst_visual_src_query);
@ -327,9 +325,8 @@ beach:
}
static gboolean
gst_visual_src_setcaps (GstPad * pad, GstCaps * caps)
gst_visual_src_setcaps (GstVisual * visual, GstCaps * caps)
{
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
GstStructure *structure;
gint depth, pitch;
@ -361,14 +358,14 @@ gst_visual_src_setcaps (GstPad * pad, GstCaps * caps)
visual->duration =
gst_util_uint64_scale_int (GST_SECOND, visual->fps_d, visual->fps_n);
gst_object_unref (visual);
gst_pad_push_event (visual->srcpad, gst_event_new_caps (caps));
return TRUE;
/* ERRORS */
error:
{
GST_DEBUG_OBJECT (visual, "error parsing caps");
gst_object_unref (visual);
return FALSE;
}
}
@ -434,7 +431,7 @@ gst_vis_src_negotiate (GstVisual * visual)
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
DEFAULT_FPS_N, DEFAULT_FPS_D);
gst_pad_set_caps (visual->srcpad, target);
gst_visual_src_setcaps (visual, target);
gst_caps_unref (target);
/* try to get a bufferpool now */