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

   1 #ifndef LRAMETER_H
   2 #define LRAMETER_H
   3
   4 #include <math.h>
   5 #include <QPixmap>
   6 #include <QString>
   7 #include <QWidget>
   8 #include <mutex>
   9
  10 #include "vu_common.h"
  11
  12 class QObject;
  13 class QPaintEvent;
  14 class QResizeEvent;
  15
  16 class LRAMeter : public QWidget
  17 {
  18         Q_OBJECT
  19
  20 public:
  21         LRAMeter(QWidget *parent);
  22
  23         void set_levels(float level_lufs, float range_low_lufs, float range_high_lufs) {
  24                 std::unique_lock<std::mutex> lock(level_mutex);
  25                 this->level_lufs = level_lufs;
  26                 this->range_low_lufs = range_low_lufs;
  27                 this->range_high_lufs = range_high_lufs;
  28                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  29         }
  30
  31         double lufs_to_pos(float level_lu, int height)
  32         {
  33                 return ::lufs_to_pos(level_lu, height, min_level, max_level);
  34         }
  35
  36         void set_min_level(float min_level)
  37         {
  38                 this->min_level = min_level;
  39                 recalculate_pixmaps();
  40         }
  41
  42         void set_max_level(float max_level)
  43         {
  44                 this->max_level = max_level;
  45                 recalculate_pixmaps();
  46         }
  47
  48         void set_ref_level(float ref_level_lufs)
  49         {
  50                 this->ref_level_lufs = ref_level_lufs;
  51         }
  52
  53 private:
  54         void resizeEvent(QResizeEvent *event) override;
  55         void paintEvent(QPaintEvent *event) override;
  56         void recalculate_pixmaps();
  57
  58         std::mutex level_mutex;
  59         float level_lufs = -HUGE_VAL;
  60         float range_low_lufs = -HUGE_VAL;
  61         float range_high_lufs = -HUGE_VAL;
  62         float min_level = -18.0f, max_level = 9.0f, ref_level_lufs = -23.0f;
  63
  64         QPixmap on_pixmap, off_pixmap;
  65 };
  66
  67 #endif