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basetextoverlay: Improve further the negotiation function

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* Only send the caps event once if the query had support for the
  overlay composition meta.
* Only do the allocation query if it is supported through caps.
* Send overlay_caps before doing allocation query rather then normal
  caps

https://bugzilla.gnome.org/show_bug.cgi?id=751157
This commit is contained in:
Nicolas Dufresne 2015-07-22 16:19:48 -04:00
parent c549523e7b
commit f9e6d38bf9
1 changed files with 35 additions and 33 deletions
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68
ext/pango/gstbasetextoverlay.c
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@ -760,7 +760,6 @@ gst_base_text_overlay_negotiate (GstBaseTextOverlay * overlay, GstCaps * caps)
f = gst_caps_get_features (overlay_caps, 0);
gst_caps_features_add (f,
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
ret = gst_pad_set_caps (overlay->srcpad, caps);
/* Then check if downstream accept overlay composition in caps */
caps_has_meta = gst_pad_peer_query_accept_caps (overlay->srcpad,
@ -769,35 +768,43 @@ gst_base_text_overlay_negotiate (GstBaseTextOverlay * overlay, GstCaps * caps)
GST_DEBUG ("caps have overlay meta %d", caps_has_meta);
}
/* First check if the allocation meta has compositon */
query = gst_query_new_allocation (overlay_caps, FALSE);
if (upstream_has_meta || caps_has_meta) {
/* Send caps immediatly, it's needed by GstBaseTransform to get a reply
* from allocation query */
ret = gst_pad_set_caps (overlay->srcpad, overlay_caps);
if (!gst_pad_peer_query (overlay->srcpad, query)) {
/* no problem, we use the query defaults */
GST_DEBUG_OBJECT (overlay, "ALLOCATION query failed");
/* First check if the allocation meta has compositon */
query = gst_query_new_allocation (overlay_caps, FALSE);
/* In case we were flushing, mark reconfigure and fail this method,
* will make it retry */
if (overlay->video_flushing)
ret = FALSE;
}
if (!gst_pad_peer_query (overlay->srcpad, query)) {
/* no problem, we use the query defaults */
GST_DEBUG_OBJECT (overlay, "ALLOCATION query failed");
alloc_has_meta = gst_query_find_allocation_meta (query,
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, &alloc_index);
/* In case we were flushing, mark reconfigure and fail this method,
* will make it retry */
if (overlay->video_flushing)
ret = FALSE;
}
GST_DEBUG ("sink alloc has overlay meta %d", alloc_has_meta);
alloc_has_meta = gst_query_find_allocation_meta (query,
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, &alloc_index);
if (alloc_has_meta) {
const GstStructure *params;
GST_DEBUG ("sink alloc has overlay meta %d", alloc_has_meta);
gst_query_parse_nth_allocation_meta (query, alloc_index, &params);
if (params) {
if (gst_structure_get (params, "width", G_TYPE_UINT, &width,
"height", G_TYPE_UINT, &height, NULL)) {
GST_DEBUG ("received window size: %dx%d", width, height);
g_assert (width != 0 && height != 0);
if (alloc_has_meta) {
const GstStructure *params;
gst_query_parse_nth_allocation_meta (query, alloc_index, &params);
if (params) {
if (gst_structure_get (params, "width", G_TYPE_UINT, &width,
"height", G_TYPE_UINT, &height, NULL)) {
GST_DEBUG ("received window size: %dx%d", width, height);
g_assert (width != 0 && height != 0);
}
}
}
gst_query_unref (query);
}
/* Update render size if needed */
@ -805,8 +812,6 @@ gst_base_text_overlay_negotiate (GstBaseTextOverlay * overlay, GstCaps * caps)
overlay->window_height = height;
gst_base_text_overlay_update_render_size (overlay);
gst_query_unref (query);
/* For backward compatbility, we will prefer bliting if downstream
* allocation does not support the meta. In other case we will prefer
* attaching, and will fail the negotiation in the unlikely case we are
@ -827,24 +832,21 @@ gst_base_text_overlay_negotiate (GstBaseTextOverlay * overlay, GstCaps * caps)
/* If we attach, then pick the overlay caps */
if (attach) {
gst_caps_unref (caps);
caps = overlay_caps;
} else {
gst_caps_unref (overlay_caps);
}
/* If negotiation worked, set the caps and remember to attach */
if (ret) {
GST_DEBUG_OBJECT (overlay, "Using caps %" GST_PTR_FORMAT, overlay_caps);
/* Caps where already sent */
} else if (ret) {
GST_DEBUG_OBJECT (overlay, "Using caps %" GST_PTR_FORMAT, caps);
overlay->attach_compo_to_buffer = attach;
ret = gst_pad_set_caps (overlay->srcpad, caps);
}
overlay->attach_compo_to_buffer = attach;
if (!ret) {
GST_DEBUG_OBJECT (overlay, "negotiation failed, schedule reconfigure");
gst_pad_mark_reconfigure (overlay->srcpad);
}
gst_caps_unref (overlay_caps);
gst_caps_unref (caps);
return ret;