From c2997b9b1a5b831e76b1779aa957f2312a6e5089 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Wed, 23 Mar 2016 22:38:44 +0100
Subject: Settings.

---
 src/instrument.cc | 76 ++++++++++++++++++++-----------------------------------
 1 file changed, 27 insertions(+), 49 deletions(-)

(limited to 'src/instrument.cc')

diff --git a/src/instrument.cc b/src/instrument.cc
index 9f18233..3348a4f 100644
--- a/src/instrument.cc
+++ b/src/instrument.cc
@@ -34,7 +34,8 @@
 #include "sample.h"
 #include "configuration.h"
 
-Instrument::Instrument()
+Instrument::Instrument(Settings& settings)
+	: settings(settings)
 {
 	DEBUG(instrument, "new %p\n", this);
 	mod = 1.0;
@@ -65,28 +66,41 @@ Sample* Instrument::sample(level_t level, size_t pos)
 {
 	Sample *sample = NULL;
 
-	if(Conf::enable_velocity_modifier == false) {
+	// Read out all values from settings.
+	auto enable_velocity_randomiser = settings.enable_velocity_randomiser.load();
+	auto velocity_randomiser_weight = settings.velocity_randomiser_weight.load();
+	auto samplerate = settings.samplerate.load();
+	auto velocity_modifier_falloff = settings.velocity_modifier_falloff.load();
+	auto enable_velocity_modifier = settings.enable_velocity_modifier.load();
+	auto velocity_modifier_weight = settings.velocity_modifier_weight.load();
+
+	if(enable_velocity_modifier == false)
+	{
 		mod = 1.0;
 		lastpos = 0;
 	}
 
-	if(Conf::enable_velocity_randomiser) {
-		float r = rand.floatInRange(-1.0*Conf::velocity_randomiser_weight,
-					    Conf::velocity_randomiser_weight);
+	if(enable_velocity_randomiser)
+	{
+		float r = (float)rand() / (float)RAND_MAX; // random number: [0;1]
+		r -= 0.5; // random number [-0.5;0.5]
+		r *= velocity_randomiser_weight * 2; // ex. random number [-0.1;0.1]
 		level += r;
 		if(level > 1.0)
 		{
 			level = 1.0;
 		}
+
 		if(level < 0.0)
 		{
 			level = 0.0;
 		}
 	}
 
-	if(Conf::enable_velocity_modifier) {
+	if(enable_velocity_modifier)
+	{
 		mod += (pos - lastpos) /
-			(Conf::samplerate * Conf::velocity_modifier_falloff);
+			(samplerate * velocity_modifier_falloff);
 		if(mod > 1.0)
 		{
 			mod = 1.0;
@@ -98,7 +112,8 @@ Sample* Instrument::sample(level_t level, size_t pos)
 		// Version 2.0
 		sample = powerlist.get(level * mod);
 	}
-	else {
+	else
+	{
 		// Version 1.0
 		std::vector<Sample*> s = samples.get(level * mod);
 		if(s.size() == 0)
@@ -106,13 +121,14 @@ Sample* Instrument::sample(level_t level, size_t pos)
 			return NULL;
 		}
 
-		sample = rand.choose(s);
+		size_t idx = rand()%(s.size());
+		sample = s[idx];
 	}
 
-	if(Conf::enable_velocity_modifier)
+	if(enable_velocity_modifier)
 	{
 		lastpos = pos;
-		mod *= Conf::velocity_modifier_weight;
+		mod *= velocity_modifier_weight;
 	}
 
 	return sample;
@@ -157,41 +173,3 @@ void Instrument::setGroup(const std::string& g)
 {
 	_group = g;
 }
-
-#ifdef TEST_INSTRUMENT
-// deps: channel.cc sample.cc audiofile.cc
-// cflags: $(SNDFILE_CFLAGS)
-// libs: $(SNDFILE_LIBS)
-#include "test.h"
-
-TEST_BEGIN;
-
-Instrument i("test");
-
-Sample* a = new Sample();
-i.addSample(0.0, 1.0, a);
-
-Sample* b = new Sample();
-i.addSample(0.0, 1.0, b);
-
-Sample* c = new Sample();
-i.addSample(1.5, 1.7, c);
-
-TEST_EQUAL(i.sample(0.0), b, "?");
-TEST_EQUAL(i.sample(0.0), a, "?");
-TEST_EQUAL(i.sample(0.0), b, "?");
-TEST_EQUAL(i.sample(0.0), b, "?");
-TEST_EQUAL(i.sample(0.0), b, "?");
-TEST_EQUAL(i.sample(0.0), b, "?");
-TEST_EQUAL(i.sample(0.0), a, "?");
-TEST_EQUAL(i.sample(0.0), a, "?");
-
-TEST_EQUAL(i.sample(2.0), NULL, "?");
-
-TEST_EQUAL(i.sample(1.6), c, "?");
-TEST_EQUAL(i.sample(1.6), c, "?");
-TEST_EQUAL(i.sample(1.6), c, "?");
-
-TEST_END;
-
-#endif /*TEST_INSTRUMENT*/
-- 
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