From 8b46fd1ff51b29cded517c9c2d166611e8c453fc Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 31 May 2012 06:03:45 +0000
Subject: Blip => Blop.  I give up trying to give ports new names.

git-svn-id: http://svn.drobilla.net/lad/trunk/plugins/blop.lv2@4484 a436a847-0d15-0410-975c-d299462d15a1
---
 src/sync_square.c | 108 ++++++++++++++++++++++++++----------------------------
 1 file changed, 52 insertions(+), 56 deletions(-)

(limited to 'src/sync_square.c')

diff --git a/src/sync_square.c b/src/sync_square.c
index 51ceac5..e954a46 100644
--- a/src/sync_square.c
+++ b/src/sync_square.c
@@ -19,19 +19,23 @@
 */
 
 #include <stdlib.h>
+#include "lv2/lv2plug.in/ns/ext/morph/morph.h"
 #include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+#include "uris.h"
 
 #define SYNCSQUARE_FREQUENCY 0
 #define SYNCSQUARE_GATE      1
 #define SYNCSQUARE_OUTPUT    2
 
 typedef struct {
-	float* frequency;
-	float* gate;
-	float* output;
-	float  srate;
-	float  nyquist;
-	float  phase;
+	float*   frequency;
+	float*   gate;
+	float*   output;
+	float    srate;
+	float    nyquist;
+	float    phase;
+	uint32_t frequency_is_cv;
+	URIs     uris;
 } SyncSquare;
 
 static void
@@ -60,6 +64,31 @@ connect_port(LV2_Handle instance,
 	}
 }
 
+static LV2_Morph_Status
+morph_port(LV2_Handle                      instance,
+           uint32_t                        port,
+           LV2_URID                        type,
+           const LV2_Morph_Property*const* properties)
+{
+	SyncSquare* plugin = (SyncSquare*)instance;
+
+	switch (port) {
+	case SYNCSQUARE_FREQUENCY:
+		if (type == plugin->uris.lv2_ControlPort) {
+			plugin->frequency_is_cv = 0;
+		} else if (type == plugin->uris.lv2_CVPort) {
+			plugin->frequency_is_cv = 1;
+		} else {
+			return LV2_MORPH_ERR_BAD_TYPE;
+		}
+		return LV2_MORPH_SUCCESS;
+	default:
+		return LV2_MORPH_ERR_BAD_PORT;
+	}
+
+	return LV2_MORPH_SUCCESS;
+}
+
 static LV2_Handle
 instantiate(const LV2_Descriptor*     descriptor,
             double                    sample_rate,
@@ -68,8 +97,10 @@ instantiate(const LV2_Descriptor*     descriptor,
 {
 	SyncSquare* plugin = (SyncSquare*)malloc(sizeof(SyncSquare));
 
-	plugin->srate   = (float)sample_rate;
-	plugin->nyquist = (float)(sample_rate / 2);
+	plugin->srate           = (float)sample_rate;
+	plugin->nyquist         = (float)(sample_rate / 2.0f);
+	plugin->frequency_is_cv = 0;
+	map_uris(&plugin->uris, features);
 
 	return (LV2_Handle)plugin;
 }
@@ -83,12 +114,12 @@ activate(LV2_Handle instance)
 }
 
 static void
-runSyncSquare_faga_oa(LV2_Handle instance,
-                      uint32_t   sample_count)
+run(LV2_Handle instance,
+    uint32_t   sample_count)
 {
 	SyncSquare* plugin = (SyncSquare*)instance;
 
-	/* Frequency (array of float of length sample_count) */
+	/* Frequency (array of float of length 1 or sample_count) */
 	const float* frequency = plugin->frequency;
 
 	/* Gate (array of float of length sample_count) */
@@ -102,11 +133,9 @@ runSyncSquare_faga_oa(LV2_Handle instance,
 	float srate   = plugin->srate;
 	float nyquist = plugin->nyquist;
 
-	float freq;
-
 	for (uint32_t s = 0; s < sample_count; ++s) {
 		if (gate[s] > 0.0f) {
-			freq = frequency[s];
+			const float freq = frequency[s * plugin->frequency_is_cv];
 
 			if (phase < nyquist) {
 				output[s] = 1.0f;
@@ -129,58 +158,25 @@ runSyncSquare_faga_oa(LV2_Handle instance,
 	plugin->phase = phase;
 }
 
-static void
-runSyncSquare_fcga_oa(LV2_Handle instance,
-                      uint32_t   sample_count)
+static const void*
+extension_data(const char* uri)
 {
-	SyncSquare* plugin = (SyncSquare*)instance;
-
-	/* Frequency (float value) */
-	const float frequency = *(plugin->frequency);
-
-	/* Gate (array of float of length sample_count) */
-	const float* gate = plugin->gate;
-
-	/* Output (pointer to float value) */
-	float* output = plugin->output;
-
-	/* Instance Data */
-	float phase   = plugin->phase;
-	float srate   = plugin->srate;
-	float nyquist = plugin->nyquist;
-
-	for (uint32_t s = 0; s < sample_count; ++s) {
-		if (gate[s] > 0.0f) {
-			if (phase < nyquist) {
-				output[s] = 1.0f;
-			} else {
-				output[s] = -1.0f;
-			}
-
-			phase += frequency;
-			if (phase < 0.0f) {
-				phase += srate;
-			} else if (phase > srate) {
-				phase -= srate;
-			}
-		} else {
-			output[s] = 0.0f;
-			phase     = 0.0f;
-		}
+	static const LV2_Morph_Interface morph = { morph_port, NULL };
+	if (!strcmp(uri, LV2_MORPH__interface)) {
+		return &morph;
 	}
-
-	plugin->phase = phase;
+	return NULL;
 }
 
 static const LV2_Descriptor descriptor = {
-	"http://drobilla.net/plugins/blip/sync_square",
+	"http://drobilla.net/plugins/blop/sync_square",
 	instantiate,
 	connect_port,
 	activate,
-	runSyncSquare_fcga_oa,
+	run,
 	NULL,
 	cleanup,
-	NULL,
+	extension_data,
 };
 
 LV2_SYMBOL_EXPORT const LV2_Descriptor*
-- 
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