From eafdef4a5e7bb6cbed75b17a38a9b0e30c6e51a6 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Tue, 23 Apr 2013 20:43:59 +0200
Subject: Add some sliders to control internal parameters of the editor.

---
 dgedit/canvastoollisten.cc     | 14 +++++++++++++-
 dgedit/canvastoollisten.h      |  4 ++++
 dgedit/canvastoolselections.cc | 16 +++++++++++++---
 dgedit/canvastoolselections.h  |  6 +++++-
 dgedit/mainwindow.cc           | 26 +++++++++++++++++++++++++-
 5 files changed, 60 insertions(+), 6 deletions(-)

(limited to 'dgedit')

diff --git a/dgedit/canvastoollisten.cc b/dgedit/canvastoollisten.cc
index 4254137..f638f93 100644
--- a/dgedit/canvastoollisten.cc
+++ b/dgedit/canvastoollisten.cc
@@ -43,6 +43,8 @@ Player::Player(Canvas *c)
   sf.byte_format = AO_FMT_NATIVE;
 
   dev = ao_open_live(ao_default_driver_id(), &sf, 0);
+
+  volume = 1000;
 }
 
 Player::~Player()
@@ -57,7 +59,7 @@ void Player::run()
     if(playing) {
       short s[BUFSZ];
       for(size_t i = 0; i < BUFSZ; i++) {
-        if(i + pos < canvas->size) s[i] = canvas->data[pos + i] * ((2<<16) - 1);
+        if(i + pos < canvas->size) s[i] = canvas->data[pos + i] * volume;
         else {
           s[i] = 0;
           playing = false;
@@ -75,6 +77,11 @@ void Player::run()
   }
 }
 
+void Player::setVolume(double v)
+{
+  volume = v;
+}
+
 CanvasToolListen::CanvasToolListen(Canvas *c)
   : player(c)
 {
@@ -128,3 +135,8 @@ void CanvasToolListen::update()
   canvas->update(r);
   lastpos = pos;
 }
+
+void CanvasToolListen::setVolume(int v)
+{
+  player.setVolume(v);
+}
diff --git a/dgedit/canvastoollisten.h b/dgedit/canvastoollisten.h
index 74a7831..090d83b 100644
--- a/dgedit/canvastoollisten.h
+++ b/dgedit/canvastoollisten.h
@@ -46,9 +46,12 @@ public:
   volatile bool playing;
   volatile size_t pos;
 
+  void setVolume(double v);
+
 private:
   ao_device *dev;  
   Canvas *canvas;
+  double volume;
 };
 
 class CanvasToolListen : public CanvasTool {
@@ -63,6 +66,7 @@ public:
 
 public slots:
   void update();
+  void setVolume(int v);
 
 private:
   Canvas *canvas;
diff --git a/dgedit/canvastoolselections.cc b/dgedit/canvastoolselections.cc
index 35c8e05..5188cb0 100644
--- a/dgedit/canvastoolselections.cc
+++ b/dgedit/canvastoolselections.cc
@@ -194,6 +194,17 @@ void CanvasToolSelections::thresholdChanged(double t)
   threshold = t;
 }
 
+void CanvasToolSelections::noiseFloorChanged(int t)
+{
+  double div = 666.0 / 0.00003;
+  noise_floor = (double)t/div;
+}
+
+void CanvasToolSelections::fadeoutChanged(int t)
+{
+  fadeout = (double)t/1000.0;
+}
+
 void CanvasToolSelections::autoCreateSelections()
 {
   float *data = canvas->data;
@@ -218,17 +229,16 @@ void CanvasToolSelections::autoCreateSelections()
       }
 
       int minsize = 100; // attack.
-      float minval = 0.00003; // noise floor
       int to = i;
       float runavg = fabs(data[from]);
-      while((runavg > minval ||
+      while((runavg > noise_floor ||
              to < from + minsize) &&
             to < (int)size) {
         double p = 0.9;
         runavg = runavg * p + fabs(data[to]) * (1 - p);
         to++;
       }
-      _selections[from] = Selection(from, to, 2, (to - from) / 3);
+      _selections[from] = Selection(from, to, 2, ((to - from) / 3) * fadeout);
 
       i = to+1;
     }
diff --git a/dgedit/canvastoolselections.h b/dgedit/canvastoolselections.h
index a9e4d56..99114de 100644
--- a/dgedit/canvastoolselections.h
+++ b/dgedit/canvastoolselections.h
@@ -57,6 +57,8 @@ public slots:
   void autoCreateSelections();
   void clearSelections();
   void thresholdChanged(double threshold);
+  void noiseFloorChanged(int t);
+  void fadeoutChanged(int t);
 
 private:
   bool selection_is_moving_left;
@@ -67,7 +69,9 @@ private:
   Canvas *canvas;
 
   double threshold;
-
+  double noise_floor;
+  double fadeout;
+  
   QColor colSelBg;
   QColor colSel;
   QColor colActiveSelBg;
diff --git a/dgedit/mainwindow.cc b/dgedit/mainwindow.cc
index afa8a16..ada7f95 100644
--- a/dgedit/mainwindow.cc
+++ b/dgedit/mainwindow.cc
@@ -151,11 +151,35 @@ MainWindow::MainWindow()
 
   configs->addWidget(new QLabel("Attack length:"));
   QSlider *slider = new QSlider(Qt::Horizontal);
-  slider->setRange(10, 10000);
+  slider->setRange(10, 1000);
   slider->setValue(666);
   connect(slider, SIGNAL(sliderMoved(int)), sorter, SLOT(setAttackLength(int)));
   configs->addWidget(slider); 
 
+  configs->addWidget(new QLabel("Falloff:"));
+  QSlider *slider2 = new QSlider(Qt::Horizontal);
+  slider2->setRange(1, 10000);
+  slider2->setValue(666);
+  connect(slider2, SIGNAL(sliderMoved(int)),
+          selections, SLOT(noiseFloorChanged(int)));
+  configs->addWidget(slider2); 
+
+  configs->addWidget(new QLabel("Fadelength:"));
+  QSlider *slider3 = new QSlider(Qt::Horizontal);
+  slider3->setRange(1, 2000);
+  slider3->setValue(666);
+  connect(slider3, SIGNAL(sliderMoved(int)),
+          selections, SLOT(fadeoutChanged(int)));
+  configs->addWidget(slider3); 
+
+  configs->addWidget(new QLabel("Player volume:"));
+  QSlider *slider4 = new QSlider(Qt::Horizontal);
+  slider4->setRange(0, 1000000);
+  slider4->setValue(100000);
+  connect(slider4, SIGNAL(sliderMoved(int)),
+          listen, SLOT(setVolume(int)));
+  configs->addWidget(slider4); 
+
   configs->addWidget(new QLabel("Prefix:"));
   QLineEdit *prefix = new QLineEdit();
   connect(prefix, SIGNAL(textChanged(const QString &)),
-- 
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