git.sesse.net Git - nageru/blob - lrameter.h

   1 #ifndef LRAMETER_H
   2 #define LRAMETER_H
   3
   4 #include <math.h>
   5 #include <QLabel>
   6 #include <QPaintEvent>
   7 #include <QWidget>
   8 #include <mutex>
   9
  10 #include "vu_common.h"
  11
  12 class LRAMeter : public QWidget
  13 {
  14         Q_OBJECT
  15
  16 public:
  17         LRAMeter(QWidget *parent);
  18
  19         void set_levels(float level_lufs, float range_low_lufs, float range_high_lufs) {
  20                 std::unique_lock<std::mutex> lock(level_mutex);
  21                 this->level_lufs = level_lufs;
  22                 this->range_low_lufs = range_low_lufs;
  23                 this->range_high_lufs = range_high_lufs;
  24                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  25         }
  26
  27         double lufs_to_pos(float level_lu, int height)
  28         {
  29                 return ::lufs_to_pos(level_lu, height, min_level, max_level);
  30         }
  31
  32         void set_min_level(float min_level)
  33         {
  34                 this->min_level = min_level;
  35                 recalculate_pixmaps();
  36         }
  37
  38         void set_max_level(float max_level)
  39         {
  40                 this->max_level = max_level;
  41                 recalculate_pixmaps();
  42         }
  43
  44 private:
  45         void resizeEvent(QResizeEvent *event) override;
  46         void paintEvent(QPaintEvent *event) override;
  47         void recalculate_pixmaps();
  48
  49         std::mutex level_mutex;
  50         float level_lufs = -HUGE_VAL;
  51         float range_low_lufs = -HUGE_VAL;
  52         float range_high_lufs = -HUGE_VAL;
  53         float min_level = -18.0f, max_level = 9.0f;
  54
  55         QPixmap on_pixmap, off_pixmap;
  56 };
  57
  58 #endif