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pango: query downstream for video overlay composition meta support

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This commit is contained in:
Mark Nauwelaerts 2012-07-03 14:32:02 +02:00
parent aa6295744b
commit 4761e6d6ab
1 changed files with 46 additions and 19 deletions
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65
ext/pango/gstbasetextoverlay.c
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@ -766,6 +766,48 @@ gst_base_text_overlay_setcaps_txt (GstBaseTextOverlay * overlay, GstCaps * caps)
/* FIXME: upstream nego (e.g. when the video window is resized) */
/* only negotiate/query video overlay composition support for now */
static gboolean
gst_base_text_overlay_negotiate (GstBaseTextOverlay * overlay)
{
GstCaps *target;
GstQuery *query;
gboolean attach = FALSE;
GST_DEBUG_OBJECT (overlay, "performing negotiation");
target = gst_pad_get_current_caps (overlay->srcpad);
if (!target || gst_caps_is_empty (target))
goto no_format;
/* find supported meta */
query = gst_query_new_allocation (target, TRUE);
if (!gst_pad_peer_query (overlay->srcpad, query)) {
/* no problem, we use the query defaults */
GST_DEBUG_OBJECT (overlay, "ALLOCATION query failed");
}
if (gst_query_has_allocation_meta (query,
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE))
attach = TRUE;
overlay->attach_compo_to_buffer = attach;
gst_query_unref (query);
gst_caps_unref (target);
return TRUE;
no_format:
{
if (target)
gst_caps_unref (target);
return FALSE;
}
}
static gboolean
gst_base_text_overlay_setcaps (GstBaseTextOverlay * overlay, GstCaps * caps)
{
@ -783,27 +825,9 @@ gst_base_text_overlay_setcaps (GstBaseTextOverlay * overlay, GstCaps * caps)
ret = gst_pad_set_caps (overlay->srcpad, caps);
if (ret) {
#if 0
GstStructure *structure;
#endif
GST_BASE_TEXT_OVERLAY_LOCK (overlay);
g_mutex_lock (GST_BASE_TEXT_OVERLAY_GET_CLASS (overlay)->pango_lock);
/* FIXME Use the query to the sink to do that when implemented */
/* Update wether to attach composition to buffer or do the composition
* ourselves */
#if 0
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-surface"))
overlay->attach_compo_to_buffer = TRUE;
else
overlay->attach_compo_to_buffer = FALSE;
#else
GST_FIXME_OBJECT (overlay, "query downstream for overlay support");
overlay->attach_compo_to_buffer = FALSE;
#endif
gst_base_text_overlay_negotiate (overlay);
gst_base_text_overlay_update_wrap_mode (overlay);
g_mutex_unlock (GST_BASE_TEXT_OVERLAY_GET_CLASS (overlay)->pango_lock);
GST_BASE_TEXT_OVERLAY_UNLOCK (overlay);
@ -1595,6 +1619,9 @@ gst_base_text_overlay_push_frame (GstBaseTextOverlay * overlay,
if (overlay->composition == NULL)
goto done;
if (gst_pad_check_reconfigure (overlay->srcpad))
gst_base_text_overlay_negotiate (overlay);
video_frame = gst_buffer_make_writable (video_frame);
if (overlay->attach_compo_to_buffer) {