Humaniser added. Speedy strokes get lower velocity levels.

5 files changed, 121 insertions, 4 deletions

diff --git a/src/configuration.cc b/src/configuration.cc
new file mode 100644
index 0000000..b71dfac
--- /dev/null
+++ b/src/configuration.cc
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            configuration.cc
+ *
+ *  Sat Oct  8 14:37:14 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "configuration.h"
+
+bool Conf::enable_velocity_modifier = true;
+float Conf::velocity_modifier_falloff = 0.5;
+float Conf::velocity_modifier_weight = 0.25;
+
+bool Conf::enable_velocity_randomiser = false;
+float Conf::velocity_randomiser_weight = 0.1;
+
+#ifdef TEST_CONFIGURATION
+//Additional dependency files
+//deps:
+//Required cflags (autoconf vars may be used)
+//cflags:
+//Required link options (autoconf vars may be used)
+//libs:
+#include "test.h"
+
+TEST_BEGIN;
+
+// TODO: Put some testcode here (see test.h for usable macros).
+
+TEST_END;
+
+#endif/*TEST_CONFIGURATION*/
diff --git a/src/configuration.h b/src/configuration.h
new file mode 100644
index 0000000..2690104
--- /dev/null
+++ b/src/configuration.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            configuration.h
+ *
+ *  Sat Oct  8 14:37:13 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CONFIGURATION_H__
+#define __DRUMGIZMO_CONFIGURATION_H__
+
+namespace Conf {
+  extern bool enable_velocity_modifier;
+  extern float velocity_modifier_falloff;
+  extern float velocity_modifier_weight;
+
+  extern bool enable_velocity_randomiser;
+  extern float velocity_randomiser_weight;
+};
+
+
+#endif/*__DRUMGIZMO_CONFIGURATION_H__*/
diff --git a/src/drumgizmo.cc b/src/drumgizmo.cc
index b7b2841..7da5947 100644
--- a/src/drumgizmo.cc
+++ b/src/drumgizmo.cc
@@ -122,7 +122,7 @@ bool DrumGizmo::run(size_t pos, sample_t *samples, size_t nsamples)
         continue;
       }
       
-      Sample *s = i->sample(evs[e].velocity);
+      Sample *s = i->sample(evs[e].velocity, evs[e].offset + pos);
       
       if(s == NULL) {
         printf("Missing Sample.\n");
diff --git a/src/instrument.cc b/src/instrument.cc
index 1b3c31a..8cfaec7 100644
--- a/src/instrument.cc
+++ b/src/instrument.cc
@@ -30,17 +30,40 @@
 #include <stdio.h>
 
 #include "sample.h"
+#include "configuration.h"
 
 Instrument::Instrument()
 {
+  mod = 1.0;
+  lastpos = 0;
 }
 
-Sample *Instrument::sample(level_t level)
+Sample *Instrument::sample(level_t level, size_t pos)
 {
+  if(Conf::enable_velocity_randomiser) {
+    float r = (float)rand() / (float)RAND_MAX; // random number: [0;1]
+    r -= 0.5; // random number [-0.5;0.5]
+    r *= Conf::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) {
+    mod += (pos - lastpos) / (44100.0 * Conf::velocity_modifier_falloff);
+    if(mod > 1.0) mod = 1.0;
+  }
+
   //  printf("Find level %f\n", level);
-  std::vector<Sample*> s = samples.get(level);
+  std::vector<Sample*> s = samples.get(level * mod);
   if(s.size() == 0) return NULL;
   size_t idx = rand()%(s.size());
+
+  if(Conf::enable_velocity_modifier) {
+    lastpos = pos;
+    mod *= Conf::velocity_modifier_weight;
+  }
+
   return s[idx];
 }
 
diff --git a/src/instrument.h b/src/instrument.h
index fb8aeac..e61d2b8 100644
--- a/src/instrument.h
+++ b/src/instrument.h
@@ -40,7 +40,7 @@ class Instrument {
 public:
   Instrument();
 
-  Sample *sample(level_t level);
+  Sample *sample(level_t level, size_t pos);
 
   std::string name();
   std::string description();
@@ -56,6 +56,9 @@ private:
   void addSample(level_t a, level_t b, Sample *s);
 
   std::vector<Sample*> samplelist;
+
+  size_t lastpos;
+  float mod;
 };
 
 //typedef std::map< std::string, Instrument > Instruments;