From 1a2dabffe961eb093846f8c8a8462468f740ad97 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sun, 25 Aug 2013 15:16:29 +0000
Subject: Support denoting latency ports with lv2:designation lv2:latency.

git-svn-id: http://svn.drobilla.net/lad/trunk/lilv@5157 a436a847-0d15-0410-975c-d299462d15a1
---
 src/lilv_internal.h |  1 +
 src/plugin.c        | 16 +++++++++++-----
 src/world.c         |  1 +
 3 files changed, 13 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/lilv_internal.h b/src/lilv_internal.h
index 49a7440..95bcee7 100644
--- a/src/lilv_internal.h
+++ b/src/lilv_internal.h
@@ -164,6 +164,7 @@ struct LilvWorldImpl {
 		SordNode* lv2_designation;
 		SordNode* lv2_extensionData;
 		SordNode* lv2_index;
+		SordNode* lv2_latency;
 		SordNode* lv2_maximum;
 		SordNode* lv2_minimum;
 		SordNode* lv2_name;
diff --git a/src/plugin.c b/src/plugin.c
index 7e33495..8ec93ff 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -594,15 +594,21 @@ lilv_plugin_has_latency(const LilvPlugin* p)
 
 	bool ret = false;
 	FOREACH_MATCH(ports) {
-		const SordNode* port            = sord_iter_get_node(ports, SORD_OBJECT);
-		SordIter*       reports_latency = lilv_world_query_internal(
+		const SordNode* port = sord_iter_get_node(ports, SORD_OBJECT);
+		SordIter*       prop = lilv_world_query_internal(
 			p->world,
 			port,
 			p->world->uris.lv2_portProperty,
 			p->world->uris.lv2_reportsLatency);
-		const bool end = sord_iter_end(reports_latency);
-		sord_iter_free(reports_latency);
-		if (!end) {
+		SordIter*       des   = lilv_world_query_internal(
+			p->world,
+			port,
+			p->world->uris.lv2_designation,
+			p->world->uris.lv2_latency);
+		const bool latent = !sord_iter_end(prop) || !sord_iter_end(des);
+		sord_iter_free(prop);
+		sord_iter_free(des);
+		if (latent) {
 			ret = true;
 			break;
 		}
diff --git a/src/world.c b/src/world.c
index a577bbe..e64c5d2 100644
--- a/src/world.c
+++ b/src/world.c
@@ -64,6 +64,7 @@ lilv_world_new(void)
 	world->uris.lv2_designation     = NEW_URI(LV2_CORE__designation);
 	world->uris.lv2_extensionData   = NEW_URI(LV2_CORE__extensionData);
 	world->uris.lv2_index           = NEW_URI(LV2_CORE__index);
+	world->uris.lv2_latency         = NEW_URI(LV2_CORE__latency);
 	world->uris.lv2_maximum         = NEW_URI(LV2_CORE__maximum);
 	world->uris.lv2_minimum         = NEW_URI(LV2_CORE__minimum);
 	world->uris.lv2_name            = NEW_URI(LV2_CORE__name);
-- 
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