Add amp example plugin.

Upgrade to waf 1.6.6.
Don't depend on a C++ compiler being present.

5 files changed, 292 insertions, 0 deletions

diff --git a/plugins/eg-amp.lv2/amp.c b/plugins/eg-amp.lv2/amp.c
new file mode 100644
index 0000000..1f2b824
--- /dev/null
+++ b/plugins/eg-amp.lv2/amp.c
@@ -0,0 +1,126 @@
+/*
+  LV2 Amp Example Plugin
+  Copyright 2006-2011 Steve Harris, David Robillard.
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define AMP_URI    "http://lv2plug.in/plugins/eg-amp"
+#define AMP_GAIN   0
+#define AMP_INPUT  1
+#define AMP_OUTPUT 2
+
+typedef struct {
+	float* gain;
+	float* input;
+	float* output;
+} Amp;
+
+static LV2_Handle
+instantiate(const LV2_Descriptor*     descriptor,
+            double                    rate,
+            const char*               bundle_path,
+            const LV2_Feature* const* features)
+{
+	Amp* amp = (Amp*)malloc(sizeof(Amp));
+
+	return (LV2_Handle)amp;
+}
+
+static void
+connect_port(LV2_Handle instance,
+             uint32_t   port,
+             void*      data)
+{
+	Amp* amp = (Amp*)instance;
+
+	switch (port) {
+	case AMP_GAIN:
+		amp->gain = data;
+		break;
+	case AMP_INPUT:
+		amp->input = data;
+		break;
+	case AMP_OUTPUT:
+		amp->output = data;
+		break;
+	}
+}
+
+static void
+activate(LV2_Handle instance)
+{
+}
+
+#define DB_CO(g) ((g) > -90.0f ? powf(10.0f, (g) * 0.05f) : 0.0f)
+
+static void
+run(LV2_Handle instance, uint32_t n_samples)
+{
+	Amp* amp = (Amp*)instance;
+
+	const float        gain   = *(amp->gain);
+	const float* const input  = amp->input;
+	float* const       output = amp->output;
+
+	const float coef = DB_CO(gain);
+
+	for (uint32_t pos = 0; pos < n_samples; pos++) {
+		output[pos] = input[pos] * coef;
+	}
+}
+
+static void
+deactivate(LV2_Handle instance)
+{
+}
+
+static void
+cleanup(LV2_Handle instance)
+{
+	free(instance);
+}
+
+const void*
+extension_data(const char * uri)
+{
+	return NULL;
+}
+
+static const LV2_Descriptor descriptor = {
+	AMP_URI,
+	instantiate,
+	connect_port,
+	activate,
+	run,
+	deactivate,
+	cleanup,
+	extension_data
+};
+
+LV2_SYMBOL_EXPORT
+const LV2_Descriptor*
+lv2_descriptor(uint32_t index)
+{
+	switch (index) {
+	case 0:
+		return &descriptor;
+	default:
+		return NULL;
+	}
+}
diff --git a/plugins/eg-amp.lv2/amp.ttl b/plugins/eg-amp.lv2/amp.ttl
new file mode 100644
index 0000000..24e99d4
--- /dev/null
+++ b/plugins/eg-amp.lv2/amp.ttl
@@ -0,0 +1,83 @@
+# LV2 Amp Example Plugin
+# Copyright 2006-2011 Steve Harris, David Robillard
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/plugins/eg-amp>
+	a lv2:Plugin ,
+		lv2:AmplifierPlugin ;
+	doap:maintainer [
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		foaf:mbox <mailto:d@drobilla.net>
+	] ;
+	doap:name "Simple Amplifier" ,
+		"简单放大器"@ch ,
+		"Einfacher Verstärker"@de ,
+		"Simple Amp"@en-gb ,
+		"Amplificador Simple"@es ,
+		"Amplificateur de Base"@fr ,
+		"Amplificatore Semplice"@it ,
+		"簡単なアンプ"@jp ,
+		"Просто Усилитель"@ru ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	lv2:property lv2:hardRtCapable ;
+	lv2:port [
+		a lv2:InputPort ,
+			lv2:ControlPort ;
+		lv2:index 0 ;
+		lv2:symbol "gain" ;
+		lv2:name "Gain" ,
+			"收益"@ch ,
+			"Gewinn"@de ,
+			"Gain"@en-gb ,
+			"Aumento"@es ,
+			"Gain"@fr ,
+			"Guadagno"@it ,
+			"利益"@jp ,
+			"Увеличение"@ru ;
+		lv2:default 0.0 ;
+		lv2:minimum -90.0 ;
+		lv2:maximum 24.0 ;
+		lv2:scalePoint [
+			rdfs:label "+5" ;
+			rdf:value 5.0
+		] ,	[
+			rdfs:label "0" ;
+			rdf:value 0.0
+		] ,	[
+			rdfs:label "-5" ;
+			rdf:value -5.0
+		] ,	[
+			rdfs:label "-10" ;
+			rdf:value -10.0
+		]
+	] ,	[
+		a lv2:AudioPort ,
+			lv2:InputPort ;
+		lv2:index 1 ;
+		lv2:symbol "in" ;
+		lv2:name "In"
+	] ,	[
+		a lv2:AudioPort ,
+			lv2:OutputPort ;
+		lv2:index 2 ;
+		lv2:symbol "out" ;
+		lv2:name "Out"
+	] .
diff --git a/plugins/eg-amp.lv2/manifest.ttl b/plugins/eg-amp.lv2/manifest.ttl
new file mode 100644
index 0000000..5ca1ada
--- /dev/null
+++ b/plugins/eg-amp.lv2/manifest.ttl
@@ -0,0 +1,10 @@
+# LV2 Plugin Manifest
+# Lists where plugins' data files and shared objects reside.
+
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/plugins/eg-amp>
+	a lv2:Plugin ;
+	lv2:binary <amp.so>  ;
+	rdfs:seeAlso <amp.ttl> .
diff --git a/plugins/eg-amp.lv2/waf b/plugins/eg-amp.lv2/waf
new file mode 120000
index 0000000..59a1ac9
--- /dev/null
+++ b/plugins/eg-amp.lv2/waf
@@ -0,0 +1 @@
+../../waf
\ No newline at end of file
diff --git a/plugins/eg-amp.lv2/wscript b/plugins/eg-amp.lv2/wscript
new file mode 100644
index 0000000..e6a906a
--- /dev/null
+++ b/plugins/eg-amp.lv2/wscript
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+import os
+import shutil
+from waflib import Logs
+from waflib.extras import autowaf as autowaf
+
+# Variables for 'waf dist'
+APPNAME = 'eg-amp.lv2'
+VERSION = '1.0.0'
+
+# Mandatory variables
+top = '.'
+out = 'build'
+
+def options(opt):
+    autowaf.set_options(opt)
+    opt.load('compiler_c')
+
+def configure(conf):
+    autowaf.configure(conf)
+
+    conf.line_just = 51
+    autowaf.display_header('Amp Configuration')
+    conf.load('compiler_c')
+
+    autowaf.check_header(conf, 'c', 'lv2/lv2plug.in/ns/lv2core/lv2.h')
+
+    conf.env.append_value('CFLAGS', '-std=c99')
+
+    # Set env['pluginlib_PATTERN']
+    pat = conf.env['cshlib_PATTERN']
+    if pat.startswith('lib'):
+        pat = pat[3:]
+    conf.env['pluginlib_PATTERN'] = pat
+    conf.env['pluginlib_EXT'] = pat[pat.rfind('.'):]
+
+    autowaf.display_msg(conf, "LV2 bundle directory",
+                        conf.env['LV2DIR'])
+    print('')
+
+def build_plugin(bld, lang, bundle, name, source, cflags=[], libs=[]):
+
+    if cflags != []:
+        obj.cflags = cflags
+        obj.cxxflags = cflags
+    if libs != []:
+        autowaf.use_lib(bld, obj, libs)
+
+def build(bld):
+    bundle = 'eg-amp.lv2'
+
+    # Copy data files to build bundle (build/eg-amp.lv2)
+    for i in [ 'amp.ttl', 'manifest.ttl' ]:
+        bld(rule         = 'cp ${SRC} ${TGT}',
+            source       = i,
+            target       = bld.path.get_bld().make_node('%s/%s' % (bundle, i)),
+            install_path = '${LV2DIR}/%s' % bundle)
+
+    # Create a build environment that builds module-style library names
+    # e.g. eg-amp.so instead of libeg-amp.so
+    # Note for C++ you must set cxxshlib_PATTERN instead
+    penv                   = bld.env.derive()
+    penv['cshlib_PATTERN'] = bld.env['pluginlib_PATTERN']
+
+    # Build plugin library
+    obj = bld(features     = 'c cshlib',
+              env          = penv,
+              source       = 'amp.c',
+              name         = 'amp',
+              target       = '%s/amp' % bundle,
+              install_path = '${LV2DIR}/%s' % bundle)
+