From c75662200446820f43dec96e2d6e7e88a765c7ee Mon Sep 17 00:00:00 2001
From: Andre Weissflog <floooh@gmail.com>
Date: Tue, 3 Apr 2018 22:45:44 +0200
Subject: [PATCH] Audio: remove the soloud lowpass filter

---
 src/yakc_oryol/Audio.cc | 17 -----------------
 src/yakc_oryol/Audio.h  |  9 ---------
 src/yakc_ui/UI.cc       |  7 -------
 3 files changed, 33 deletions(-)

diff --git a/src/yakc_oryol/Audio.cc b/src/yakc_oryol/Audio.cc
index 9648eba..3cc493e 100644
--- a/src/yakc_oryol/Audio.cc
+++ b/src/yakc_oryol/Audio.cc
@@ -21,11 +21,9 @@ Audio::Setup(yakc* emu_) {
         soloud->init(SoLoud::Soloud::CLIP_ROUNDOFF, SoLoud::Soloud::AUTO, 44100, 1024, 1);
     }
     soloud_open_count++;
-    this->filter.setParams(SoLoud::BiquadResonantFilter::LOWPASS, 44100, this->LowPassFreq, this->LowPassResonance);
     this->audioSource = Memory::New<AudioSource>();
     this->audioSource->emu = emu_;
     this->audioSource->setSingleInstance(true);
-    this->audioSource->setFilter(0, &this->filter);
     this->audioSource->cpu_clock_speed = board.freq_hz;
     this->audioHandle = soloud->play(*this->audioSource, 1.0f);
 }
@@ -56,20 +54,5 @@ Audio::GetProcessedCycles() const {
     return this->audioSource->sample_cycle_count;
 }
 
-//------------------------------------------------------------------------------
-void
-Audio::UpdateFilterSettings() {
-    soloud->fadeFilterParameter(this->audioHandle, 0, SoLoud::BiquadResonantFilter::FREQUENCY, this->LowPassFreq, 0.1f);
-    soloud->fadeFilterParameter(this->audioHandle, 0, SoLoud::BiquadResonantFilter::RESONANCE, this->LowPassResonance, 0.1f);
-}
-
-//------------------------------------------------------------------------------
-void
-Audio::ResetFilterSettings() {
-    this->LowPassFreq = 4000.0f;
-    this->LowPassResonance = 2.0f;
-    this->UpdateFilterSettings();
-}
-
 } // namespace YAKC
 
diff --git a/src/yakc_oryol/Audio.h b/src/yakc_oryol/Audio.h
index 42f6b08..c2b209e 100644
--- a/src/yakc_oryol/Audio.h
+++ b/src/yakc_oryol/Audio.h
@@ -7,7 +7,6 @@
 #include "yakc/yakc.h"
 #include "Core/Containers/Queue.h"
 #include "AudioSource.h"
-#include "soloud_biquadresonantfilter.h"
 
 namespace YAKC {
 
@@ -21,18 +20,10 @@ class Audio {
     void Update();
     /// get the current max processed audio sample count in number of CPU cycles
     uint64_t GetProcessedCycles() const;
-    /// update filter settings
-    void UpdateFilterSettings();
-    /// reset filter settings to default
-    void ResetFilterSettings();
-
-    float LowPassFreq = 3200.0f;
-    float LowPassResonance = 2.0f;
 
     static SoLoud::Soloud* soloud;
     static int soloud_open_count;
     yakc* emu = nullptr;
-    SoLoud::BiquadResonantFilter filter;
     AudioSource* audioSource = nullptr;
     int audioHandle = 0;
 };
diff --git a/src/yakc_ui/UI.cc b/src/yakc_ui/UI.cc
index 6269d66..a7fb819 100644
--- a/src/yakc_ui/UI.cc
+++ b/src/yakc_ui/UI.cc
@@ -446,16 +446,9 @@ UI::OnFrame(yakc& emu) {
                     this->Settings.colorTV = !this->Settings.colorTV;
                 }
                 ImGui::SliderFloat("CRT Warp", &this->Settings.crtWarp, 0.0f, 1.0f/16.0f);
-                if (ImGui::SliderFloat("Lowpass Freq", &this->audio->LowPassFreq, 1000.0, 8000.0f)) {
-                    this->audio->UpdateFilterSettings();
-                }
-                if (ImGui::SliderFloat("Lowpass Resonance", &this->audio->LowPassResonance, 1.0f, 8.0f)) {
-                    this->audio->UpdateFilterSettings();
-                }
                 ImGui::SliderInt("CPU Speed", &emu.accel, 1, 8, "%.0fx");
                 if (ImGui::MenuItem("Reset To Defaults")) {
                     this->Settings = settings();
-                    this->audio->ResetFilterSettings();
                 }
                 ImGui::EndMenu();
             }