Indicate gain reduction in a-comp

diff --git a/libs/plugins/a-comp.lv2/a-comp.c b/libs/plugins/a-comp.lv2/a-comp.c
index 6bc245e6da142b1cfd52f8aabf138e0fb0ce3a22..615646d943ca55560a0f9da0fd97eb8286290d7b 100644 (file)
--- a/libs/plugins/a-comp.lv2/a-comp.c
+++ b/libs/plugins/a-comp.lv2/a-comp.c
@@ -99,6 +99,7 @@ typedef struct {
        float v_knee;
        float v_ratio;
        float v_thresdb;
+       float v_gainr;
        float v_makeup;
        float v_lvl;
        float v_lvl_in;
@@ -320,6 +321,7 @@ run_mono(LV2_Handle instance, uint32_t n_samples)
 #endif
 
        float in_peak = 0;
+       acomp->v_gainr = 0.0;
 
        for (i = 0; i < n_samples; i++) {
                in0 = input[i];
@@ -353,6 +355,9 @@ run_mono(LV2_Handle instance, uint32_t n_samples)
                Lgain = from_dB(cdb);
 
                *(acomp->gainr) = Lyl;
+               if (Lyl > acomp->v_gainr) {
+                       acomp->v_gainr = Lyl;
+               }
 
                lgaininp = in0 * Lgain;
 
@@ -459,6 +464,7 @@ run_stereo(LV2_Handle instance, uint32_t n_samples)
 #endif
 
        float in_peak = 0;
+       acomp->v_gainr = 0.0;
 
        for (i = 0; i < n_samples; i++) {
                in0 = input0[i];
@@ -494,6 +500,9 @@ run_stereo(LV2_Handle instance, uint32_t n_samples)
                Lgain = from_dB(cdb);
 
                *(acomp->gainr) = Lyl;
+               if (Lyl > acomp->v_gainr) {
+                       acomp->v_gainr = Lyl;
+               }
 
                lgaininp = in0 * Lgain;
                rgaininp = in1 * Lgain;
@@ -653,6 +662,23 @@ render_inline (LV2_Handle instance, uint32_t w, uint32_t max_h)
                cairo_stroke (cr);
        }
 
+       { // GR
+               const float x = -.5 + floorf (w * (62.5f / 70.f));
+               const float y = -.5 + floorf (h * (10.0f / 70.f));
+               const float wd = floorf (w * (5.f / 70.f));
+               const float ht = floorf (h * (55.f / 70.f));
+               cairo_rectangle (cr, x, y, wd, ht);
+               cairo_fill (cr);
+
+               const float h_gr = fminf (ht, floorf (h * self->v_gainr / 70.f));
+               cairo_set_source_rgba (cr, 0.95, 0.0, 0.0, 1.0);
+               cairo_rectangle (cr, x, y, wd, h_gr);
+               cairo_fill (cr);
+               cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 0.5);
+               cairo_rectangle (cr, x, y, wd, ht);
+               cairo_set_source_rgba (cr, 0.75, 0.75, 0.75, 1.0);
+               cairo_stroke (cr);
+       }
 
        // draw curve
        cairo_set_source_rgba (cr, .8, .8, .8, 1.0);