towards tibia-based plugins

plugin/plugin.h

@@ -0,0 +1,107 @@
+/*
+ * Tibia
+ *
+ * Copyright (C) 2023, 2024 Orastron Srl unipersonale
+ *
+ * Tibia 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, version 3 of the License.
+ *
+ * Tibia 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 Tibia.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File author: Stefano D'Angelo
+ */
+
+#include "asid.h"
+
+typedef struct plugin {
+	asid	instance;
+} plugin;
+
+static void plugin_init(plugin *instance) {
+	instance->instance = asid_new();
+}
+
+static void plugin_fini(plugin *instance) {
+	(void)instance;
+}
+
+static void plugin_set_sample_rate(plugin *instance, float sample_rate) {
+	instance->sample_rate = sample_rate;
+	//safe approx instance->delay_line_length = ceilf(sample_rate) + 1;
+	instance->delay_line_length = (size_t)(sample_rate + 1.f) + 1;
+}
+
+static size_t plugin_mem_req(plugin *instance) {
+	return instance->delay_line_length * sizeof(float);
+}
+
+static void plugin_mem_set(plugin *instance, void *mem) {
+	instance->delay_line = (float *)mem;
+}
+
+static void plugin_reset(plugin *instance) {
+	for (size_t i = 0; i < instance->delay_line_length; i++)
+		instance->delay_line[i] = 0.f;
+	instance->delay_line_cur = 0;
+	instance->z1 = 0.f;
+	instance->cutoff_k = 1.f;
+	instance->yz1 = 0.f;
+}
+
+static void plugin_set_parameter(plugin *instance, size_t index, float value) {
+	switch (index) {
+	case 0:
+		//approx instance->gain = powf(10.f, 0.05f * value);
+		instance->gain = ((2.6039890429412597e-4f * value + 0.032131027163547855f) * value + 1.f) / ((0.0012705124328080768f * value - 0.0666763481312185f) * value + 1.f);
+		break;
+	case 1:
+		instance->delay = 0.001f * value;
+		break;
+	case 2:
+		instance->cutoff = value;
+		break;
+	case 3:
+		instance->bypass = value >= 0.5f;
+		break;
+	}
+}
+
+static float plugin_get_parameter(plugin *instance, size_t index) {
+	(void)index;
+	return instance->yz1;
+}
+
+static size_t calc_index(size_t cur, size_t delay, size_t len) {
+	return (cur < delay ? cur + len : cur) - delay;
+}
+
+static void plugin_process(plugin *instance, const float **inputs, float **outputs, size_t n_samples) {
+	//approx size_t delay = roundf(instance->sample_rate * instance->delay);
+	size_t delay = (size_t)(instance->sample_rate * instance->delay + 0.5f);
+	const float mA1 = instance->sample_rate / (instance->sample_rate + 6.283185307179586f * instance->cutoff * instance->cutoff_k);
+	for (size_t i = 0; i < n_samples; i++) {
+		instance->delay_line[instance->delay_line_cur] = inputs[0][i];
+		const float x = instance->delay_line[calc_index(instance->delay_line_cur, delay, instance->delay_line_length)];
+		instance->delay_line_cur++;
+		if (instance->delay_line_cur == instance->delay_line_length)
+			instance->delay_line_cur = 0;
+		const float y = x + mA1 * (instance->z1 - x);
+		instance->z1 = y;
+		outputs[0][i] = instance->bypass ? inputs[0][i] : instance->gain * y;
+		instance->yz1 = outputs[0][i];
+	}
+}
+
+static void plugin_midi_msg_in(plugin *instance, size_t index, const uint8_t * data) {
+	(void)index;
+	if (((data[0] & 0xf0) == 0x90) && (data[2] != 0))
+		//approx instance->cutoff_k = powf(2.f, (1.f / 12.f) * (note - 60));
+		instance->cutoff_k = data[1] < 64 ? (-0.19558034980097166f * data[1] - 2.361735109225749f) / (data[1] - 75.57552349522389f) : (393.95397927344214f - 7.660826245588588f * data[1]) / (data[1] - 139.0755234952239f);
+}

plugin/plugin_ui.h

@@ -0,0 +1,41 @@
+/*
+ * Tibia
+ *
+ * Copyright (C) 2024 Orastron Srl unipersonale
+ *
+ * Tibia 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, version 3 of the License.
+ *
+ * Tibia 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 Tibia.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File author: Stefano D'Angelo
+ */
+
+typedef struct {
+	void *			widget;
+} plugin_ui;
+
+static void plugin_ui_get_default_size(uint32_t *width, uint32_t *height) {
+	*width = 0;
+	*height = 0;
+}
+
+static plugin_ui *plugin_ui_create(char has_parent, void *parent, plugin_ui_callbacks *cbs) {
+	return NULL;
+}
+
+static void plugin_ui_free(plugin_ui *instance) {
+}
+
+static void plugin_ui_idle(plugin_ui *instance) {
+}
+
+static void plugin_ui_set_parameter(plugin_ui *instance, size_t index, float value) {
+}

plugin/tibia/company.json

@@ -0,0 +1,7 @@
+{
+	"company": {
+		"name":		"Orastron",
+		"url":		"https://www.orastron.com/",
+		"email":	"info@orastron.com"
+	}
+}

plugin/tibia/lv2-make.json

@@ -0,0 +1,4 @@
+{
+	"lv2_make": {
+	}
+}

plugin/tibia/lv2.json

@@ -0,0 +1,15 @@
+{
+	"lv2": {
+		"prefixes": {
+			"orastron": "https://www.orastron.com/"
+		},
+		"uri": "@orastron:asid",
+		"types": [ "@lv2:FilterPlugin" ],
+		"version": "2.0",
+		"busSymbols": [ "input", "output" ],
+		"parameterSymbols": [ "cutoff", "lfo_amount", "lfo_speed", "bypass", "mod_cutoff" ],
+		"ui": {
+			"uri": "@orastron:asid_ui"
+		}
+	}
+}

plugin/tibia/make.json

@@ -0,0 +1,5 @@
+{
+	"make": {
+		"pluginDir": ".."
+	}
+}

plugin/tibia/product.json

@@ -0,0 +1,89 @@
+{
+	"product": {
+		"name":	"A-SID",
+		"version": "2.0.0",
+		"buildVersion": "1",
+		"bundleName": "asid",
+		"buses": [
+			{
+				"type":	"audio",
+				"direction": "input",
+				"channels": "mono",
+				"name": "Input",
+				"shortName": "Input"
+			},
+			{
+				"type": "audio",
+				"direction": "output",
+				"channels": "mono",
+				"name": "Output",
+				"shortName": "Output"
+			}
+		],
+		"parameters": [
+			{
+				"name": "Cutoff",
+				"shortName": "Cutoff",
+				"direction": "input",
+				"defaultValue": 100.0,
+				"minimum": 0.0,
+				"maximum": 100.0,
+				"unit": "pc",
+				"map": "linear"
+			},
+			{
+				"name": "LFO Amount",
+				"shortName": "LFO Amount",
+				"direction": "input",
+				"defaultValue": 0.0,
+				"minimum": 0.0,
+				"maximum": 100.0,
+				"unit": "pc",
+				"map": "linear"
+			},
+			{
+				"name": "LFO Speed",
+				"shortName": "LFO Speed",
+				"direction": "input",
+				"defaultValue": 0.0,
+				"minimum": 0.0,
+				"maximum": 100.0,
+				"unit": "pc",
+				"map": "linear"
+			},
+			{
+				"name": "Bypass",
+				"shortName": "Bypass",
+				"direction": "input",
+				"isBypass": true,
+				"defaultValue": 0,
+				"minimum": 0,
+				"maximum": 1,
+				"toggled": true,
+				"optional": true,
+				"integer": true,
+				"scalePoints": {
+					"Off": 0,
+					"On": 1
+				},
+				"list": true,
+				"unit": "",
+				"map": "linear"
+			},
+			{
+				"name": "Modulated Cutoff",
+				"shortName": "Mod Cutoff",
+				"direction": "output",
+				"defaultValue": 0.0,
+				"minimum": 0.0,
+				"maximum": 100.0,
+				"unit": "pc",
+				"map": "linear"
+			}
+		],
+		"ui": {
+			"userResizable": true,
+			"selfResizable": false
+		}
+	}
+}

plugin/tibia/vst3-make.json

@@ -0,0 +1,4 @@
+{
+	"vst3_make": {
+	}
+}

plugin/tibia/vst3.json

@@ -0,0 +1,11 @@
+{
+	"vst3": {
+		"plugin": {
+			"cid": "cc1fce342727482590896121b2c87b6b"
+		},
+		"controller": {
+			"cid": "66f88edfaab94b50b1c0458846719e84"
+		},
+		"subCategory": "Fx|Filter"
+	}
+}

plugin/tibia_clean.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+dir=`dirname $0`
+rm -fr $dir/vst3 $dir/lv2

plugin/tibia_gen.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+TIBIA_DIR=../../tibia
+dir=`dirname $0`
+
+$TIBIA_DIR/tibia $dir/tibia/product.json,$dir/tibia/company.json,$dir/tibia/vst3.json $TIBIA_DIR/templates/vst3 vst3
+$TIBIA_DIR/tibia $dir/tibia/product.json,$dir/tibia/company.json,$dir/tibia/vst3.json,$dir/tibia/make.json,$dir/tibia/vst3-make.json $TIBIA_DIR/templates/vst3-make vst3
+
+$TIBIA_DIR/tibia $dir/tibia/product.json,$dir/tibia/company.json,$dir/tibia/lv2.json $TIBIA_DIR/templates/lv2 lv2
+$TIBIA_DIR/tibia $dir/tibia/product.json,$dir/tibia/company.json,$dir/tibia/lv2.json,$dir/tibia/make.json,$dir/tibia/lv2-make.json $TIBIA_DIR/templates/lv2-make lv2