From 1d74968bf02607873adfebf1776043cbd2f636b9 Mon Sep 17 00:00:00 2001
From: Paul Ferrand <paul@ferrand.cc>
Date: Sun, 29 Mar 2020 13:27:47 +0200
Subject: [PATCH] Clear cc events on advanceTime

---
 src/sfizz/MidiState.cpp | 6 ++++++
 src/sfizz/MidiState.h   | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/sfizz/MidiState.cpp b/src/sfizz/MidiState.cpp
index b1536251..9406d66c 100644
--- a/src/sfizz/MidiState.cpp
+++ b/src/sfizz/MidiState.cpp
@@ -51,6 +51,12 @@ void sfz::MidiState::setSampleRate(float sampleRate) noexcept
 void sfz::MidiState::advanceTime(int numSamples) noexcept
 {
     internalClock += numSamples;
+    for (auto& ccEvents: cc) {
+        ASSERT(!ccEvents.empty()); // CC event vectors should never be empty
+        ccEvents.front().second = ccEvents.back().second;
+        ccEvents.front().first = 0;
+        ccEvents.resize(1);
+    }
 }
 
 void sfz::MidiState::setSamplesPerBlock(int samplesPerBlock) noexcept
diff --git a/src/sfizz/MidiState.h b/src/sfizz/MidiState.h
index 103ed9cd..22df7242 100644
--- a/src/sfizz/MidiState.h
+++ b/src/sfizz/MidiState.h
@@ -96,7 +96,8 @@ public:
 
     /**
      * @brief Advances the internal clock of a given amount of samples.
-     * You should call this at each callback.
+     * You should call this at each callback. This will flush the events
+     * in the midistate memory.
      *
      * @param numSamples the number of samples of clock advance
      */