Add plugin template interface (fast discovery of plugins with certain I/O

characteristics).


git-svn-id: http://svn.drobilla.net/lad/slv2@1051 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 114 insertions, 0 deletions

diff --git a/src/template.c b/src/template.c
new file mode 100644
index 0000000..0c179f7
--- /dev/null
+++ b/src/template.c
@@ -0,0 +1,114 @@
+/* SLV2
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ *  
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <raptor.h>
+#include <slv2/types.h>
+#include <slv2/template.h>
+#include "slv2_internal.h"
+
+
+/* private */
+SLV2Template
+slv2_template_new()
+{
+	return raptor_new_sequence((void (*)(void*))&slv2_port_signature_free, NULL);
+}
+
+
+/* private */
+void
+slv2_template_add_port(SLV2Template t)
+{
+	SLV2PortSignature sig = slv2_port_signature_new(
+			SLV2_PORT_DIRECTION_UNKNOWN,
+			SLV2_PORT_DATA_TYPE_UNKNOWN);
+
+	raptor_sequence_push(t, sig);
+}
+
+
+/* private */
+void slv2_template_port_type(SLV2Template t,
+                             uint32_t     port_index,
+                             const char*  type_uri)
+{
+	SLV2PortSignature sig = slv2_template_get_port(t, port_index);
+
+	if (sig) {
+		if (!strcmp(type_uri, "http://lv2plug.in/ns/lv2core#InputPort"))
+			sig->direction = SLV2_PORT_DIRECTION_INPUT;
+		else if (!strcmp(type_uri, "http://lv2plug.in/ns/lv2core#OutputPort"))
+			sig->direction = SLV2_PORT_DIRECTION_OUTPUT;
+		else if (!strcmp(type_uri, "http://lv2plug.in/ns/lv2core#ControlPort"))
+			sig->type = SLV2_PORT_DATA_TYPE_CONTROL;
+		else if (!strcmp(type_uri, "http://lv2plug.in/ns/lv2core#AudioPort"))
+			sig->type = SLV2_PORT_DATA_TYPE_AUDIO;
+		else if (!strcmp(type_uri, "http://ll-plugins.nongnu.org/lv2/ext/MidiPort"))
+			sig->type = SLV2_PORT_DATA_TYPE_MIDI;
+		else if (!strcmp(type_uri, "http://drobilla.net/ns/lv2ext/osc/0#OSCPort"))
+			sig->type = SLV2_PORT_DATA_TYPE_OSC;
+	}
+}
+
+
+SLV2PortSignature
+slv2_template_get_port(SLV2Template t,
+                       uint32_t     index)
+{
+	if (index > INT_MAX)
+		return NULL;
+	else
+		return (SLV2PortSignature)raptor_sequence_get_at(t, (int)index);
+}
+
+
+
+void
+slv2_template_free(SLV2Template t)
+{
+	if (t)
+		raptor_free_sequence(t);
+}
+
+
+uint32_t
+slv2_template_get_num_ports(SLV2Template t)
+{
+	return raptor_sequence_size(t);
+}
+
+
+uint32_t
+slv2_template_get_num_ports_of_type(SLV2Template      t,
+                                    SLV2PortDirection direction,
+                                    SLV2PortDataType  type)
+{
+	uint32_t ret = 0;
+
+	for (unsigned i=0; i < slv2_template_get_num_ports(t); ++i) {
+		SLV2PortSignature sig = slv2_template_get_port(t, i);
+		if (sig->direction == direction && sig->type == type)
+			++ret;
+	}
+	
+	return ret;
+}
+