From b2a6a67170119fc4b3fbb27b86f804665676e241 Mon Sep 17 00:00:00 2001
From: Christopher Snowhill <kode54@gmail.com>
Date: Sat, 8 May 2021 19:41:35 -0700
Subject: [PATCH] MIDI: FluidSynth is now configured to load samples
 dynamically instead of caching entire banks at once

---
 Plugins/MIDI/MIDI/SFPlayer.cpp | 10 +++++++++-
 Plugins/MIDI/MIDI/SFPlayer.h   |  2 ++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Plugins/MIDI/MIDI/SFPlayer.cpp b/Plugins/MIDI/MIDI/SFPlayer.cpp
index 54e2b6da7..de3933d55 100644
--- a/Plugins/MIDI/MIDI/SFPlayer.cpp
+++ b/Plugins/MIDI/MIDI/SFPlayer.cpp
@@ -18,6 +18,7 @@ SFPlayer::SFPlayer() : MIDIPlayer()
     _synth[1] = 0;
     _synth[2] = 0;
     uInterpolationMethod = FLUID_INTERP_DEFAULT;
+    bDynamicLoading = true;
 
     for (unsigned int i = 0; i < 3; ++i)
     {
@@ -26,6 +27,7 @@ SFPlayer::SFPlayer() : MIDIPlayer()
         fluid_settings_setnum(_settings[i], "synth.gain", 0.2);
         fluid_settings_setnum(_settings[i], "synth.sample-rate", 44100);
         fluid_settings_setint(_settings[i], "synth.midi-channels", 16);
+        fluid_settings_setint(_settings[i], "synth.dynamic-sample-loading", bDynamicLoading ? 1 : 0);
         fluid_settings_setint(_settings[i], "synth.device-id", 0x10 + i);
     }
 }
@@ -41,12 +43,17 @@ SFPlayer::~SFPlayer()
 
 void SFPlayer::setInterpolationMethod(unsigned method)
 {
-    shutdown();
     uInterpolationMethod = method;
     for (unsigned int i = 0; i < 3; ++i)
         if ( _synth[i] ) fluid_synth_set_interp_method( _synth[i], -1, method );
 }
 
+void SFPlayer::setDynamicLoading(bool enabled)
+{
+    shutdown();
+    bDynamicLoading = enabled;
+}
+
 void SFPlayer::send_event(uint32_t b)
 {
     if (!(b & 0x80000000))
@@ -157,6 +164,7 @@ bool SFPlayer::startup()
     for (unsigned int i = 0; i < 3; ++i)
     {
         fluid_settings_setnum(_settings[i], "synth.sample-rate", uSampleRate);
+        fluid_settings_setint(_settings[i], "synth.dynamic-sample-loading", bDynamicLoading ? 1 : 0);
         _synth[i] = new_fluid_synth(_settings[i]);
         if (!_synth[i])
         {
diff --git a/Plugins/MIDI/MIDI/SFPlayer.h b/Plugins/MIDI/MIDI/SFPlayer.h
index bd6b3263c..8390df454 100644
--- a/Plugins/MIDI/MIDI/SFPlayer.h
+++ b/Plugins/MIDI/MIDI/SFPlayer.h
@@ -26,6 +26,7 @@ public:
     void setSoundFont( const char * in );
     void setFileSoundFont( const char * in );
     void setInterpolationMethod(unsigned method);
+    void setDynamicLoading(bool enabled);
 
     const char * GetLastError() const;
 
@@ -44,6 +45,7 @@ private:
     std::string        sFileSoundFontName;
 
     unsigned           uInterpolationMethod;
+    bool               bDynamicLoading;
 };
 
 #endif /* SFPlayer_h */