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-rw-r--r--src/snap.cpp11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/snap.cpp b/src/snap.cpp
index cea09d7..8a86521 100644
--- a/src/snap.cpp
+++ b/src/snap.cpp
@@ -131,10 +131,17 @@ private:
gst_element_set_state (m_play, GST_STATE_PLAYING);
}
+ // convert settings range [1..100] to gst playbin's range is [0...1.0]
gdouble get_volume() const
{
- // input int range is [1..100]; gst playbin's range is [0...1.0]
- return CLAMP(m_volume, 1, 100) / 100.0;
+ constexpr int in_range_lo = 1;
+ constexpr int in_range_hi = 100;
+ const double in = CLAMP(m_volume, in_range_lo, in_range_hi);
+ const double pct = (in - in_range_lo) / (in_range_hi - in_range_lo);
+
+ constexpr double out_range_lo = 0.0;
+ constexpr double out_range_hi = 1.0;
+ return out_range_lo + (pct * (out_range_hi - out_range_lo));
}
static gboolean bus_callback(GstBus*, GstMessage* msg, gpointer gself)