From 7fbc7c297c0a5b4f23bfd285789ad55b72f792f3 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 22 Feb 2007 04:16:05 +0000
Subject: Machina quantization, various timing related fixes.

git-svn-id: http://svn.drobilla.net/lad/raul@326 a436a847-0d15-0410-975c-d299462d15a1
---
 raul/Makefile.am        |  3 ++-
 raul/Quantizer.h        | 36 ++++++++++++++++++++++++++++++++++++
 raul/TimeSlice.h        |  6 +++++-
 tests/Makefile.am       |  4 +++-
 tests/quantize_test.cpp | 28 ++++++++++++++++++++++++++++
 tests/time_test.cpp     |  1 -
 6 files changed, 74 insertions(+), 4 deletions(-)
 create mode 100644 raul/Quantizer.h
 create mode 100644 tests/quantize_test.cpp

diff --git a/raul/Makefile.am b/raul/Makefile.am
index 76c9031..70aa03a 100644
--- a/raul/Makefile.am
+++ b/raul/Makefile.am
@@ -27,7 +27,8 @@ raulinclude_HEADERS = \
 	Stateful.h \
 	Thread.h \
 	WeakPtr.h \
-	TimeSlice.h
+	TimeSlice.h \
+	Quantizer.h
 
 if WITH_LIBLO
 raulinclude_HEADERS += AtomLiblo.h
diff --git a/raul/Quantizer.h b/raul/Quantizer.h
new file mode 100644
index 0000000..c6a9bfb
--- /dev/null
+++ b/raul/Quantizer.h
@@ -0,0 +1,36 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul 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.
+ * 
+ * Raul 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_QUANTIZER_H
+#define RAUL_QUANTIZER_H
+
+#include <cmath>
+
+namespace Raul {
+
+
+class Quantizer {
+public:
+	inline static double quantize(double q, double value) {
+		return lrint(value / q) * q; 
+	}
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_QUANTIZER_H
diff --git a/raul/TimeSlice.h b/raul/TimeSlice.h
index 289233c..7ffd8a4 100644
--- a/raul/TimeSlice.h
+++ b/raul/TimeSlice.h
@@ -81,6 +81,10 @@ public:
 		return (time >= start_ticks() && time < start_ticks() + length_ticks());
 	}
 
+	double tick_rate() { return _tick_rate; }
+	double beat_rate() { return _beat_rate; }
+	double bpm()       { return 60/_beat_rate; }
+
 	void set_tick_rate(double tick_rate) {
 		_tick_rate = tick_rate;
 		update_beat_time();
@@ -88,7 +92,7 @@ public:
 
 	void set_bpm(double bpm) {
 		_beat_rate = 60.0/bpm;
-		update_beat_time();
+		//update_beat_time();
 	}
 	
 	inline Seconds beats_to_seconds(BeatTime beats) const {
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 05b0f21..9e8e6c8 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -3,7 +3,7 @@ if BUILD_TESTS
 AM_CXXFLAGS = -I.. -lpthread @RASQAL_CFLAGS@ @GLIBMM_CFLAGS@
 ALL_LIBS = @RASQAL_LIBS@ @GLIBMM_LIBS@ ../src/libraul.la
 
-bin_PROGRAMS = path_test thread_test queue_test atomic_test list_test time_test	
+bin_PROGRAMS = path_test thread_test queue_test atomic_test list_test time_test	quantize_test
 
 thread_test_LDADD = $(ALL_LIBS)
 path_test_LDADD = $(ALL_LIBS)
@@ -11,6 +11,7 @@ queue_test_LDADD = $(ALL_LIBS)
 atomic_test_LDADD = $(ALL_LIBS)
 list_test_LDADD = $(ALL_LIBS)
 time_test_LDADD = $(ALL_LIBS)
+quantize_test_LDADD = $(ALL_LIBS)
 
 path_test_SOURCES = path_test.cpp
 thread_test_SOURCES = thread_test.cpp
@@ -18,5 +19,6 @@ queue_test_SOURCES = queue_test.cpp
 atomic_test_SOURCES = atomic_test.cpp
 list_test_SOURCES = list_test.cpp
 time_test_SOURCES = time_test.cpp
+quantize_test_SOURCES = quantize_test.cpp
 
 endif
diff --git a/tests/quantize_test.cpp b/tests/quantize_test.cpp
new file mode 100644
index 0000000..434df2e
--- /dev/null
+++ b/tests/quantize_test.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <raul/Quantizer.h>
+
+using namespace std;
+using namespace Raul;
+
+
+int
+main()
+{
+	double q = 0;
+	double beats = 0;
+
+	cout << "Quantization: ";
+	cin >> q;
+	cout << endl;
+
+	while (true) {
+		cout << "Beats: ";
+		cin >> beats;
+
+		cout << "Quantized: ";
+		cout << Quantizer::quantize(q, beats) << endl << endl;
+	}
+
+	return 0; 
+}
+
diff --git a/tests/time_test.cpp b/tests/time_test.cpp
index 0eb0a83..0ffdc61 100644
--- a/tests/time_test.cpp
+++ b/tests/time_test.cpp
@@ -10,7 +10,6 @@ main()
 {
 	TimeSlice ts(1/48000.0, 120);
 
-	string in_string;
 	double in_double = 0;
 
 	cout << "Beats: ";
-- 
cgit v1.2.1