From 9a1b8d765ba6a31af3bc4e86f7cff819955396e9 Mon Sep 17 00:00:00 2001
From: Krzysztof Foltman <wdev@foltman.com>
Date: Thu, 13 Feb 2014 00:13:34 +0000
Subject: [PATCH] Saturator: example use of seamless bypass

---
 src/calf/modules_dist.h | 3 ++-
 src/modules_dist.cpp    | 6 ++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/calf/modules_dist.h b/src/calf/modules_dist.h
index 0aee6bc..7975e27 100644
--- a/src/calf/modules_dist.h
+++ b/src/calf/modules_dist.h
@@ -24,7 +24,7 @@
 #include <assert.h>
 #include <limits.h>
 #include "biquad.h"
-#include "inertia.h"
+#include "bypass.h"
 #include "audio_fx.h"
 #include "giface.h"
 #include "metadata.h"
@@ -45,6 +45,7 @@ private:
     dsp::biquad_d2 lp[2][4], hp[2][4];
     dsp::biquad_d2 p[2];
     dsp::tap_distortion dist[2];
+    dsp::bypass bypass;
     vumeters meters;
 public:
     uint32_t srate;
diff --git a/src/modules_dist.cpp b/src/modules_dist.cpp
index 017a48f..0d3feb3 100644
--- a/src/modules_dist.cpp
+++ b/src/modules_dist.cpp
@@ -124,9 +124,9 @@ void saturator_audio_module::set_sample_rate(uint32_t sr)
 
 uint32_t saturator_audio_module::process(uint32_t offset, uint32_t numsamples, uint32_t inputs_mask, uint32_t outputs_mask)
 {
-    bool bypass = *params[param_bypass] > 0.5f;
+    bool bypassed = bypass.update(*params[param_bypass] > 0.5f, numsamples);
     numsamples += offset;
-    if(bypass) {
+    if(bypassed) {
         // everything bypassed
         while(offset < numsamples) {
             if(in_count > 1 && out_count > 1) {
@@ -145,6 +145,7 @@ uint32_t saturator_audio_module::process(uint32_t offset, uint32_t numsamples, u
             ++offset;
         }
     } else {
+        uint32_t orig_offset = offset;
         // process
         while(offset < numsamples) {
             // cycle through samples
@@ -240,6 +241,7 @@ uint32_t saturator_audio_module::process(uint32_t offset, uint32_t numsamples, u
         hp[1][3].sanitize();
         p[0].sanitize();
         p[1].sanitize();
+        bypass.crossfade(ins, outs, 2, orig_offset, numsamples);
     }
     meters.fall(numsamples);
     return outputs_mask;
-- 
2.11.4.GIT