Move everything into a separate futatabi/ subdir, for the upcoming merge with Futatabi.

[nageru] / nageru / vumeter.h

diff --git a/nageru/vumeter.h b/nageru/vumeter.h
new file mode 100644 (file)
index 0000000..7a94200
--- /dev/null
+++ b/nageru/vumeter.h
@@ -0,0 +1,80 @@
+#ifndef VUMETER_H
+#define VUMETER_H
+
+#include <math.h>
+#include <QPixmap>
+#include <QString>
+#include <QWidget>
+#include <mutex>
+
+#include "vu_common.h"
+
+class QObject;
+class QPaintEvent;
+class QResizeEvent;
+
+class VUMeter : public QWidget
+{
+       Q_OBJECT
+
+public:
+       VUMeter(QWidget *parent);
+
+       void set_level(float level_lufs) {
+               set_level(level_lufs, level_lufs);
+       }
+
+       void set_level(float level_lufs_left, float level_lufs_right) {
+               std::unique_lock<std::mutex> lock(level_mutex);
+               this->level_lufs[0] = level_lufs_left;
+               this->level_lufs[1] = level_lufs_right;
+               QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
+       }
+
+       void set_peak(float peak_lufs) {
+               set_peak(peak_lufs, peak_lufs);
+       }
+
+       void set_peak(float peak_lufs_left, float peak_lufs_right) {
+               std::unique_lock<std::mutex> lock(level_mutex);
+               this->peak_lufs[0] = peak_lufs_left;
+               this->peak_lufs[1] = peak_lufs_right;
+               QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
+       }
+
+       double lufs_to_pos(float level_lu, int height)
+       {
+               return ::lufs_to_pos(level_lu, height, min_level, max_level);
+       }
+
+       void set_min_level(float min_level)
+       {
+               this->min_level = min_level;
+               recalculate_pixmaps();
+       }
+
+       void set_max_level(float max_level)
+       {
+               this->max_level = max_level;
+               recalculate_pixmaps();
+       }
+
+       void set_ref_level(float ref_level_lufs)
+       {
+               this->ref_level_lufs = ref_level_lufs;
+       }
+
+private:
+       void resizeEvent(QResizeEvent *event) override;
+       void paintEvent(QPaintEvent *event) override;
+       void recalculate_pixmaps();
+
+       std::mutex level_mutex;
+       float level_lufs[2] { -HUGE_VALF, -HUGE_VALF };
+       float peak_lufs[2] { -HUGE_VALF, -HUGE_VALF };
+       float min_level = -18.0f, max_level = 9.0f, ref_level_lufs = -23.0f;
+
+       QPixmap full_on_pixmap, on_pixmap, off_pixmap;
+};
+
+#endif