add VU and IEC meter DSP (from jmeters)

[ardour.git] / gtk2_ardour / editor_ops.cc

diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index 4037f7a83d2d621d6ed435c772e0081b4e893635..beebd8505fdddead735e423d6912b9a3af0ea65e 100644 (file)
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -1331,17 +1331,17 @@ Editor::tav_zoom_smooth (bool coarser, bool force_all)
 }
 
 bool
-Editor::clamp_samples_per_pixel (double& fpp) const
+Editor::clamp_samples_per_pixel (framecnt_t& fpp) const
 {
        bool clamped = false;
        
-       if (fpp < 1.0) {
-               fpp = 1.0;
+       if (fpp < 1) {
+               fpp = 1;
                clamped = true;
        }
 
        if (max_framepos / fpp < 800) {
-               fpp = max_framepos / 800.0;
+               fpp = max_framepos / 800;
                clamped = true;
        }
 
@@ -1353,19 +1353,19 @@ Editor::temporal_zoom_step (bool coarser)
 {
        ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, coarser)
 
-       double nfpp = samples_per_pixel;
+       framecnt_t nspp = samples_per_pixel;
 
        if (coarser) {
-               nfpp = min (9e6, nfpp * 1.61803399);
+               nspp *= 2;
        } else {
-               nfpp = max (1.0, nfpp / 1.61803399);
+               nspp /= 2;
        }
 
-       temporal_zoom (nfpp);
+       temporal_zoom (nspp);
 }
 
 void
-Editor::temporal_zoom (double fpp)
+Editor::temporal_zoom (framecnt_t fpp)
 {
        if (!_session) {
                return;
@@ -1380,7 +1380,7 @@ Editor::temporal_zoom (double fpp)
        framepos_t leftmost_after_zoom = 0;
        framepos_t where;
        bool in_track_canvas;
-       double nfpp;
+       framecnt_t nfpp;
        double l;
 
        clamp_samples_per_pixel (fpp);
@@ -1388,14 +1388,12 @@ Editor::temporal_zoom (double fpp)
                return;
        }
 
-       nfpp = fpp;
-       
        // Imposing an arbitrary limit to zoom out as too much zoom out produces 
        // segfaults for lack of memory. If somebody decides this is not high enough I
        // believe it can be raisen to higher values but some limit must be in place.
-       if (nfpp > 8e+08) {
-               nfpp = 8e+08;
-       }
+
+       nfpp = min (fpp, (framecnt_t) 8589934592);
+       nfpp = max ((framecnt_t) 1, fpp);
 
        new_page_size = (framepos_t) floor (_visible_canvas_width * nfpp);
        half_page_size = new_page_size / 2;