Fix VU meter range.

diff --git a/vumeter.cpp b/vumeter.cpp
index 03a93e7ba4fd52476978cdb3759bce2a9b417b29..ab649bc792af8c74e3657f9986006125471d6f0c 100644 (file)
--- a/vumeter.cpp
+++ b/vumeter.cpp
@@ -17,15 +17,16 @@ void VUMeter::paintEvent(QPaintEvent *event)
 
        painter.fillRect(0, 0, width(), height(), Qt::black);
 
-       float level;
+       float level_lufs;
        {
                unique_lock<mutex> lock(level_mutex);
-               level = this->level;
+               level_lufs = this->level_lufs;
        }
 
-       const float min_level = 0.0f;    // y=0 is top of screen, so “min” is the loudest level.
-       const float max_level = -60.0f; 
-       int y = lrintf(height() * (level - min_level) / (max_level - min_level));
+       float level_lu = level_lufs + 23.0f;
+       const float min_level = 18.0f;    // y=0 is top of screen, so “min” is the loudest level.
+       const float max_level = -36.0f;
+       int y = lrintf(height() * (level_lu - min_level) / (max_level - min_level));
        if (y >= 0 && y < height()) {
                painter.setPen(Qt::white);
                painter.drawLine(0, y, width(), y);

diff --git a/vumeter.h b/vumeter.h
index de27529d937229937a45fd9ebee485227fdcbd16..f9be2920493667e2053ddb2e954d521b21226eed 100644 (file)
--- a/vumeter.h
+++ b/vumeter.h
@@ -13,9 +13,9 @@ class VUMeter : public QWidget
 public:
        VUMeter(QWidget *parent);
 
-       void set_level(float level) {
+       void set_level(float level_lufs) {
                std::unique_lock<std::mutex> lock(level_mutex);
-               this->level = level;
+               this->level_lufs = level_lufs;
                update();
        }
 
@@ -23,7 +23,7 @@ private:
        void paintEvent(QPaintEvent *event) override;
 
        std::mutex level_mutex;
-       float level = -HUGE_VAL;
+       float level_lufs = -HUGE_VAL;
 };
 
 extern VUMeter *global_vu_meter;