add NaN/Inf protection now that bypass no longer de/activates

1 files changed, 18 insertions, 0 deletions

diff --git a/libs/plugins/a-eq.lv2/a-eq.c b/libs/plugins/a-eq.lv2/a-eq.c
index deac7a641e..d286552e03 100644
--- a/libs/plugins/a-eq.lv2/a-eq.c
+++ b/libs/plugins/a-eq.lv2/a-eq.c
@@ -23,6 +23,13 @@
 #include <stdbool.h>
 #include <stdio.h>
 
+#ifdef COMPILER_MSVC
+#include <float.h>
+#define isfinite_local(val) (bool)_finite((double)val)
+#else
+#define isfinite_local isfinite
+#endif
+
 #include "lv2/lv2plug.in/ns/lv2core/lv2.h"
 
 #ifdef LV2_EXTENDED
@@ -92,6 +99,13 @@ static void linear_svf_reset(struct linear_svf *self)
 	self->s[0] = self->s[1] = 0.0;
 }
 
+static void linear_svf_protect(struct linear_svf *self)
+{
+	if (!isfinite_local (self->s[0]) || !isfinite_local (self->s[1])) {
+		linear_svf_reset (self);
+	}
+}
+
 typedef struct {
 	float* f0[BANDS];
 	float* g[BANDS];
@@ -432,6 +446,10 @@ run(LV2_Handle instance, uint32_t n_samples)
 		offset += block;
 	}
 
+	for (uint32_t j = 0; j < BANDS; j++) {
+		linear_svf_protect(&aeq->v_filter[j]);
+	}
+
 #ifdef LV2_EXTENDED
 	if (aeq->need_expose && aeq->queue_draw) {
 		aeq->need_expose = false;