Added omins

git-svn-id: http://svn.drobilla.net/lad/omins@8 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 249 insertions, 0 deletions

diff --git a/src/multiplexer_4420.c b/src/multiplexer_4420.c
new file mode 100644
index 0000000..cff4c36
--- /dev/null
+++ b/src/multiplexer_4420.c
@@ -0,0 +1,249 @@
+/* Multiplxer plugin.  Copyright (C) 2005 Thorsten Wilms.
+ * GATEd on Dave Robillard's "Hz to AMS style V/Oct" plugin for the skeleton.
+ * 
+ * This plugin 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 plugin 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
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define _XOPEN_SOURCE 500 /* strdup */
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "ladspa.h"
+
+#define MUX_GATE_ID 4420
+
+#define MUX_NUM_PORTS 4
+
+/* Port Numbers */
+#define MUX_GATE     0
+#define MUX_OFF     1
+#define MUX_ON  2
+#define MUX_OUTPUT   3
+
+
+/* All state information for plugin */
+typedef struct
+{
+	/* Ports */
+	LADSPA_Data* gate_buffer;
+	LADSPA_Data* off_buffer;
+	LADSPA_Data* on_buffer;
+        LADSPA_Data* output_buffer;
+} MUX;
+
+
+/* Construct a new plugin instance */
+LADSPA_Handle
+MUX_instantiate(const LADSPA_Descriptor* descriptor,
+                   unsigned long            srate)
+{
+	return (LADSPA_Handle)malloc(sizeof(MUX));
+}
+
+
+/* Connect a port to a data location */
+void
+MUX_connect_port(LADSPA_Handle instance,
+             unsigned long port,
+             LADSPA_Data*  location)
+{
+	MUX* plugin;
+
+	plugin = (MUX*)instance;
+	switch (port) {
+	case MUX_GATE:
+		plugin->gate_buffer = location;
+		break;
+        case MUX_OFF:
+		plugin->off_buffer = location;
+		break;
+        case MUX_ON:
+		plugin->on_buffer = location;
+		break;
+	case MUX_OUTPUT:
+		plugin->output_buffer = location;
+		break;
+	}
+}
+
+
+void
+MUX_run_cr(LADSPA_Handle instance, unsigned long nframes)
+{
+	const MUX* const plugin = (MUX*)instance;
+
+	if (*plugin->gate_buffer <= 0)
+		*plugin->output_buffer = *plugin->off_buffer;
+	else
+		*plugin->output_buffer = *plugin->on_buffer;
+}
+
+
+void
+MUX_run_ar(LADSPA_Handle instance, unsigned long nframes)
+{
+	const MUX* const         plugin = (MUX*)instance;
+	const LADSPA_Data* const gate   = plugin->gate_buffer;
+	const LADSPA_Data* const off    = plugin->off_buffer;
+	const LADSPA_Data* const on     = plugin->on_buffer;
+	LADSPA_Data* const       output = plugin->output_buffer;
+	unsigned long i;
+
+	for (i = 0; i < nframes; i++)
+		output[i] = (gate[i] <= 0) ? off[i] : on[i];
+}
+
+
+void
+MUX_cleanup(LADSPA_Handle instance)
+{
+	free(instance);
+}
+
+
+LADSPA_Descriptor* MUX_cr_desc = NULL;
+LADSPA_Descriptor* MUX_ar_desc = NULL;
+
+
+/* Called automatically when the plugin library is first loaded. */
+void
+_init()
+{
+	char**                 port_names;
+	LADSPA_PortDescriptor* port_descriptors;
+	LADSPA_PortRangeHint*  port_range_hints;
+
+	MUX_cr_desc = (LADSPA_Descriptor*)malloc(sizeof(LADSPA_Descriptor));
+	MUX_ar_desc = (LADSPA_Descriptor*)malloc(sizeof(LADSPA_Descriptor));
+
+	if (MUX_cr_desc) {
+		MUX_cr_desc->UniqueID = MUX_GATE_ID;
+		MUX_cr_desc->Label = strdup("mux_cr");
+		MUX_cr_desc->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
+		MUX_cr_desc->Name = strdup("Multiplexer (CR)");
+		MUX_cr_desc->Maker = strdup("Thorsten Wilms");
+		MUX_cr_desc->Copyright = strdup("GPL");
+		MUX_cr_desc->PortCount = MUX_NUM_PORTS;
+		port_descriptors = (LADSPA_PortDescriptor*)calloc(MUX_NUM_PORTS, sizeof(LADSPA_PortDescriptor));
+		MUX_cr_desc->PortDescriptors = (const LADSPA_PortDescriptor*)port_descriptors;
+		port_descriptors[MUX_GATE] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
+                port_descriptors[MUX_OFF] = LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
+                port_descriptors[MUX_ON] = LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL;
+		port_descriptors[MUX_OUTPUT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_CONTROL;
+		port_names = (char**)calloc(MUX_NUM_PORTS, sizeof(char*));
+		MUX_cr_desc->PortNames = (const char**)port_names;
+		port_names[MUX_GATE] = strdup("Gate");
+                port_names[MUX_OFF] = strdup("Off");
+                port_names[MUX_ON] = strdup("On");
+		port_names[MUX_OUTPUT] = strdup("Output");
+		port_range_hints = ((LADSPA_PortRangeHint *)
+		                    calloc(MUX_NUM_PORTS, sizeof(LADSPA_PortRangeHint)));
+		MUX_cr_desc->PortRangeHints = (const LADSPA_PortRangeHint*)port_range_hints;
+		port_range_hints[MUX_GATE].HintDescriptor = 0;
+                port_range_hints[MUX_OFF].HintDescriptor = 0;
+                port_range_hints[MUX_ON].HintDescriptor = 0;
+		port_range_hints[MUX_OUTPUT].HintDescriptor = 0;
+		MUX_cr_desc->instantiate = MUX_instantiate;
+		MUX_cr_desc->connect_port = MUX_connect_port;
+		MUX_cr_desc->activate = NULL;
+		MUX_cr_desc->run = MUX_run_cr;
+		MUX_cr_desc->run_adding = NULL;
+		MUX_cr_desc->set_run_adding_gain = NULL;
+		MUX_cr_desc->deactivate = NULL;
+		MUX_cr_desc->cleanup = MUX_cleanup;
+	}
+
+	if (MUX_ar_desc) {
+		MUX_ar_desc->UniqueID = MUX_GATE_ID+1;
+		MUX_ar_desc->Label = strdup("mux_ar");
+		MUX_ar_desc->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
+		MUX_ar_desc->Name = strdup("Multiplexer (AR)");
+		MUX_ar_desc->Maker = strdup("Thorsten Wilms");
+		MUX_ar_desc->Copyright = strdup("GPL");
+		MUX_ar_desc->PortCount = MUX_NUM_PORTS;
+		port_descriptors = (LADSPA_PortDescriptor*)calloc(MUX_NUM_PORTS, sizeof(LADSPA_PortDescriptor));
+		MUX_ar_desc->PortDescriptors = (const LADSPA_PortDescriptor*)port_descriptors;
+		port_descriptors[MUX_GATE] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
+                port_descriptors[MUX_OFF] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
+                port_descriptors[MUX_ON] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO;
+		port_descriptors[MUX_OUTPUT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO;
+		port_names = (char**)calloc(MUX_NUM_PORTS, sizeof(char*));
+		MUX_ar_desc->PortNames = (const char**)port_names;
+		port_names[MUX_GATE] = strdup("Gate");
+                port_names[MUX_OFF] = strdup("Off");
+                port_names[MUX_ON] = strdup("On");
+		port_names[MUX_OUTPUT] = strdup("Output");
+		port_range_hints = ((LADSPA_PortRangeHint *)
+		                    calloc(MUX_NUM_PORTS, sizeof(LADSPA_PortRangeHint)));
+		MUX_ar_desc->PortRangeHints = (const LADSPA_PortRangeHint*)port_range_hints;
+		port_range_hints[MUX_GATE].HintDescriptor = 0;
+                port_range_hints[MUX_OFF].HintDescriptor = 0;
+                port_range_hints[MUX_ON].HintDescriptor = 0;
+		port_range_hints[MUX_OUTPUT].HintDescriptor = 0;
+		MUX_ar_desc->instantiate = MUX_instantiate;
+		MUX_ar_desc->connect_port = MUX_connect_port;
+		MUX_ar_desc->activate = NULL;
+		MUX_ar_desc->run = MUX_run_ar;
+		MUX_ar_desc->run_adding = NULL;
+		MUX_ar_desc->set_run_adding_gain = NULL;
+		MUX_ar_desc->deactivate = NULL;
+		MUX_ar_desc->cleanup = MUX_cleanup;
+	}
+}
+
+
+void
+MUX_delete_descriptor(LADSPA_Descriptor* psDescriptor)
+{
+	unsigned long lIndex;
+	if (psDescriptor) {
+		free((char*)psDescriptor->Label);
+		free((char*)psDescriptor->Name);
+		free((char*)psDescriptor->Maker);
+		free((char*)psDescriptor->Copyright);
+		free((LADSPA_PortDescriptor *)psDescriptor->PortDescriptors);
+		for (lIndex = 0; lIndex < psDescriptor->PortCount; lIndex++)
+			free((char*)(psDescriptor->PortNames[lIndex]));
+		free((char**)psDescriptor->PortNames);
+		free((LADSPA_PortRangeHint *)psDescriptor->PortRangeHints);
+		free(psDescriptor);
+	}
+}
+
+
+/* Called automatically when the library is unloaded. */
+void
+_fini()
+{
+	MUX_delete_descriptor(MUX_cr_desc);
+	MUX_delete_descriptor(MUX_ar_desc);
+}
+
+
+/* Return a descriptor of the requested plugin type. */
+const LADSPA_Descriptor*
+ladspa_descriptor(unsigned long Index)
+{
+	switch (Index) {
+	case 0:
+		return MUX_cr_desc;
+	case 1:
+		return MUX_ar_desc;
+	default:
+		return NULL;
+	}
+}
+