DONT KNOW :D

.gitignore

@@ -1,4 +1,6 @@
+.cache/
 /build/
+/build-debug/
 /helper/
 /cmake-build-debug/
 .idea/

CMakeLists.txt

@@ -2,12 +2,13 @@ cmake_minimum_required(VERSION 3.17)
 project(VulcanoLE)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG")
+set(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
+find_package(Threads REQUIRED)
 find_package(udev REQUIRED)
 find_package(HIDAPI REQUIRED)
 pkg_check_modules(LIBUSB REQUIRED libusb-1.0)
-find_package(Threads REQUIRED)
 
 find_package(JACK REQUIRED)
 
@@ -27,14 +28,21 @@ set(SOURCE_FILES
         src/VulcanoLE/Scripts/RainbowLine.cpp
         src/VulcanoLE/Scripts/Random.cpp
         src/VulcanoLE/Scripts/RainbowMap.cpp
+        src/VulcanoLE/Scripts/Spectral.cpp
+        src/VulcanoLE/Scripts/BassHistory.cpp
+        src/VulcanoLE/Scripts/TheUnknown.cpp
+        src/VulcanoLE/Scripts/Strobo.cpp
+        src/VulcanoLE/Audio/Filter.cpp
         )
 set(UTILS_FILES
         src/VUtils/Logging.cpp
         src/VUtils/FileHandler.cpp
         src/VUtils/Pool.cpp
         src/VUtils/Environment.cpp
+        src/VUtils/Random.cpp
         src/VUtils/StringUtils.cpp
         src/VUtils/Math.cpp
+        src/VUtils/SimplexNoise.cpp
         )
 include_directories(${CMAKE_SOURCE_DIR}/headers/)
 add_executable(

cmake/FindHIDAPI.cmake

@@ -118,7 +118,7 @@ find_path(HIDAPI_INCLUDE_DIR
         ${PC_HIDAPI_HIDRAW_INCLUDE_DIRS}
         ${PC_HIDAPI_LIBUSB_INCLUDE_DIRS})
 
-find_package(Threads QUIET)
+find_package(Threads REQUIRED)
 
 ###
 # Compute the "I don't care which backend" library

cmake/FindJACK.cmake

@@ -1,19 +1,49 @@
-# Copyright (c) 2015 Andrew Kelley
+# Try to find JACK
-# This file is MIT licensed.
+# This will define the following variables:
-# See http://opensource.org/licenses/MIT
+#
-
+#  JACK_FOUND - Whether Jack was found.
-# JACK_FOUND
+#  JACK_INCLUDE_DIRS - Jack include directories.
-# JACK_INCLUDE_DIR
+#  JACK_LIBRARIES - Jack libraries.
-# JACK_LIBRARY
-
-find_path(JACK_INCLUDE_DIR NAMES jack/jack.h)
-
-find_library(JACK_LIBRARY NAMES jack)
-
-include(CheckLibraryExists)
-check_library_exists(jack "jack_set_port_rename_callback" "${JACK_LIBRARY}" HAVE_jack_set_port_rename_callback)
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(JACK DEFAULT_MSG JACK_LIBRARY JACK_INCLUDE_DIR HAVE_jack_set_port_rename_callback)
 
-mark_as_advanced(JACK_INCLUDE_DIR JACK_LIBRARY)
+if(JACK_LIBRARIES AND JACK_INCLUDE_DIRS)
+
+    # in cache already
+    set(JACK_FOUND TRUE)
+
+else()
+
+    find_package(PkgConfig)
+    if(PKG_CONFIG_FOUND)
+        pkg_check_modules(_JACK jack)
+    endif(PKG_CONFIG_FOUND)
+
+    find_path(JACK_INCLUDE_DIR
+            NAMES
+            jack/jack.h
+            PATHS
+            ${_JACK_INCLUDEDIR}
+            )
+
+    find_library(JACK_LIBRARY
+            NAMES
+            jack
+            PATHS
+            ${_JACK_LIBDIR}
+            )
+
+    set(JACK_INCLUDE_DIRS
+            ${JACK_INCLUDE_DIR}
+            )
+
+    set(JACK_LIBRARIES
+            ${JACK_LIBRARY}
+            )
+
+    find_package_handle_standard_args(JACK DEFAULT_MSG JACK_LIBRARIES JACK_INCLUDE_DIRS)
+
+    # show the JACK_INCLUDE_DIRS and JACK_LIBRARIES variables only in the advanced view
+    mark_as_advanced(JACK_INCLUDE_DIR JACK_LIBRARY JACK_INCLUDE_DIRS JACK_LIBRARIES)
+
+endif()

headers/VUtils/Environment.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <string>
-#include <unordered_map>
+#include <map>
 
 namespace VUtils {
     class Environment {
@@ -20,7 +20,7 @@ namespace VUtils {
         void set(const char* name, const char *value);
         void setNumber(const char* name, double value);
     protected:
-        std::unordered_map<std::string, std::string> m_env;
+        std::map<std::string, std::string> m_env;
         std::string m_prefix = "VENV_";
         std::string m_filename;
     };

headers/VUtils/Math.h

@@ -7,5 +7,6 @@ namespace VUtils {
         static double bezierBlend(double t);
         static double easeIn(double ratio);
         static double map(double x, double in_min, double in_max, double out_min, double out_max);
+        static double cubicInterpolate (double y0, double y1, double y2, double y3, double factor);
     };
 }

headers/VUtils/Random.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <random>
+
+namespace VUtils {
+
+    class Random {
+    public:
+        static Random& the() {
+            static Random _instance;
+            return _instance;
+        }
+        Random();
+        static double generate(double min, double max);
+        double get(double min, double max);
+        void setDist(double min, double max);
+        double getFast();
+    private:
+        std::random_device m_rd;
+        std::mt19937 m_mt;
+        std::uniform_real_distribution<double> m_dist;
+    };
+}

headers/VUtils/SimplexNoise.h

@@ -0,0 +1,55 @@
+/**
+ * @file    SimplexNoise.h
+ * @brief   A Perlin Simplex Noise C++ Implementation (1D, 2D, 3D).
+ *
+ * Copyright (c) 2014-2018 Sebastien Rombauts (sebastien.rombauts@gmail.com)
+ *
+ * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
+ * or copy at http://opensource.org/licenses/MIT)
+ */
+#pragma once
+
+#include <cstddef>  // size_t
+
+/**
+ * @brief A Perlin Simplex Noise C++ Implementation (1D, 2D, 3D, 4D).
+ */
+class SimplexNoise {
+public:
+    // 1D Perlin simplex noise
+    static float noise(float x);
+    // 2D Perlin simplex noise
+    static float noise(float x, float y);
+    // 3D Perlin simplex noise
+    static float noise(float x, float y, float z);
+
+    // Fractal/Fractional Brownian Motion (fBm) noise summation
+    float fractal(size_t octaves, float x) const;
+    float fractal(size_t octaves, float x, float y) const;
+    float fractal(size_t octaves, float x, float y, float z) const;
+
+    /**
+     * Constructor of to initialize a fractal noise summation
+     *
+     * @param[in] frequency    Frequency ("width") of the first octave of noise (default to 1.0)
+     * @param[in] amplitude    Amplitude ("height") of the first octave of noise (default to 1.0)
+     * @param[in] lacunarity   Lacunarity specifies the frequency multiplier between successive octaves (default to 2.0).
+     * @param[in] persistence  Persistence is the loss of amplitude between successive octaves (usually 1/lacunarity)
+     */
+    explicit SimplexNoise(float frequency = 1.0f,
+                          float amplitude = 1.0f,
+                          float lacunarity = 2.0f,
+                          float persistence = 0.5f) :
+            mFrequency(frequency),
+            mAmplitude(amplitude),
+            mLacunarity(lacunarity),
+            mPersistence(persistence) {
+    }
+
+private:
+    // Parameters of Fractional Brownian Motion (fBm) : sum of N "octaves" of noise
+    float mFrequency;   ///< Frequency ("width") of the first octave of noise (default to 1.0)
+    float mAmplitude;   ///< Amplitude ("height") of the first octave of noise (default to 1.0)
+    float mLacunarity;  ///< Lacunarity specifies the frequency multiplier between successive octaves (default to 2.0).
+    float mPersistence; ///< Persistence is the loss of amplitude between successive octaves (usually 1/lacunarity)
+};

headers/VulcanoLE/Audio/AudioGrabber.h

@@ -7,6 +7,7 @@
 #include <VUtils/Environment.h>
 #include <VulcanoLE/Audio/FFT.h>
 #include <VulcanoLE/Audio/Types.h>
+#include <VulcanoLE/Audio/Filter.h>
 
 class AudioGrabber {
 public:
@@ -14,19 +15,22 @@ public:
         FFT = 0,
         RMS = 1,
         PEAK = 2,
-        ALL = 3
+        FILTER = 3,
+        ALL = 4
     };
     AudioGrabber();
     ~AudioGrabber();
     bool read(stereoSample *buffer, uint32_t bufferSize);
     static AudioGrabber* createAudioGrabber();
     void init();
+    Audio::FilterHelper& getFilter();
     FFT fft;
     ReqMode requestMode = ReqMode::FFT;
     stereoSampleFrame loudness = {0.0, 0.0};
     stereoSampleFrame getLoudness();
     bool work();
     VUtils::Environment *env = nullptr;
+    double getBass();
 private:
     std::mutex m_mtx;
     stereoSample *m_buffer{};
@@ -34,4 +38,5 @@ private:
     void calculatePEAK(stereoSample *pFrame);
     double m_scale = 1.0;
     int availableData = 0;
+    Audio::FilterHelper m_filter;
 };

headers/VulcanoLE/Audio/FFT.h

@@ -12,6 +12,7 @@ public:
     outputSample *getData();
     bool prepareInput(stereoSample *buffer, uint32_t sampleSize, double scale);
     double hannWindow[BUFFER_SIZE]{};
+    int size = BUFFER_SIZE;
 protected:
     fftw_complex *m_fftwInputLeft{};
     fftw_complex *m_fftwInputRight{};
@@ -25,4 +26,5 @@ protected:
     static double valueToAmp(double value);
     double times;
     static double limit;
+
 };

headers/VulcanoLE/Audio/Filter.h

@@ -0,0 +1,30 @@
+#include "Types.h"
+#include <vector>
+
+#define FILTER_LIMIT 0.25
+namespace Audio {
+    class Filter {
+    public:
+        Filter();
+        float process(float input, float cut, float);
+
+    protected:
+        float output = 0.0;
+        int m_counter = 0;
+        float m_feedback[4][16]{};
+        float m_filterOutput[4]{};
+    };
+
+    struct FilterHelper {
+        Filter filter_right{};
+        Filter filter_left{};
+        float cutoff{};
+        float scale{1.0};
+        std::vector<stereoSample> output;
+        stereoSampleFrame work(stereoSample *buffer, int size);
+    protected:
+        double m_limit = FILTER_LIMIT;
+        int overshot_times = 0;
+        stereoSampleFrame doLimit(double, double);
+    };
+}

headers/VulcanoLE/Audio/Types.h

@@ -1,5 +1,4 @@
 #pragma once
-#define FFT_SIZE 512
 #define BUFFER_SIZE 1024
 
 struct stereoSampleFrame {

headers/VulcanoLE/Colors/ColorHelper.h

@@ -2,7 +2,8 @@
 #include <VulcanoLE/Colors/Type.h>
 
 namespace Color {
-    struct Generator {
+struct Generator {
-        static rgba rgbFromRatio(double ratio, int16_t alpha);
+  static rgba rgbFromRatio(double ratio, int16_t alpha);
-    };
+  static rgb rgbFromHSV(hsv in);
-}
+};
+} // namespace Color

headers/VulcanoLE/Colors/Type.h

@@ -3,8 +3,20 @@
 #include <cstdint>
 
 typedef struct rgba_type {
-    int16_t r{};
+  int16_t r = 0;
-    int16_t g{};
+  int16_t g = 0;
-    int16_t b{};
+  int16_t b = 0;
-    int16_t a = 255;
+  int16_t a = 0;
 } rgba;
+
+typedef struct {
+  double r; // a fraction between 0 and 1
+  double g; // a fraction between 0 and 1
+  double b; // a fraction between 0 and 1
+} rgb;
+
+typedef struct {
+  double h; // angle in degrees
+  double s; // a fraction between 0 and 1
+  double v; // a fraction between 0 and 1
+} hsv;

headers/VulcanoLE/Keyboards/Vulcan121.h

@@ -20,13 +20,12 @@ class Vulcan121 {
 public:
     explicit Vulcan121(HIDHelper *helper);
     ~Vulcan121();
-    int sendLedMap(led_map *src, bool deleteMap = false);
+    int sendLedMap(led_map& src);
     int sendToLEDs(rgba rgb);
     bool sendInitSequence();
     bool queryCtrlReport(unsigned char id);
     bool sendCtrlReport(unsigned char id);
     bool waitForCtrlDev();
-    static led_map *createEmptyLEDMap();
     struct DATA {
         int num_rows = NUM_ROWS;
         int num_cols = NUM_COLS;
@@ -39,8 +38,10 @@ public:
     int getIndex(int row, int col);
     // PLEASE MAKE SURE YOU KNOW THE LIMITS!
     int getIndexNoCheck(int row, int col);
-    static void fadeOutMap(led_map* map, double factor);
+    static void fadeOutMap(led_map& map, double factor);
-    void fadeOutMapColumn(led_map* map, double factor);
+    static void setColor(led_map& map, rgba color);
+    static void setColorNoBrightness(led_map& map, rgba color);
+    void fadeOutMapColumn(led_map& map, double factor);
 protected:
     void setupMap();
     // we need some mapping feature! rows and cols dont have the same amount of keys. so the struct needs

headers/VulcanoLE/Scripts/BassHistory.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <VulcanoLE/Visual/VIZ.h>
+#include <VulcanoLE/Audio/AudioGrabber.h>
+#include <queue>
+
+namespace VIZ {
+    struct BassHistory : public VIZ {
+        BassHistory(AudioGrabber *pGrabber, Vulcan121 *pVulcan121);
+        ~BassHistory() override = default;
+        void onSetup() override;
+        void onTick(float delta) override;
+        const char *name() override;
+        std::string m_name = "Bass History";
+        led_map map{};
+        std::vector<double> m_history;
+        void pushNew(double val);
+    };
+}
+

headers/VulcanoLE/Scripts/Loudness.h

@@ -13,8 +13,11 @@ namespace VIZ {
         void onTick(float delta) override;
         void setForChannel(float value, int channel);
         void drawFrame(int toRow);
+        void drawSetup(float val);
         const char *name() override;
         std::string m_name = "Loudness Meter";
+        bool isSetup = true;
+        double frameWidth = 0;
     protected:
         rgba colours[3] = {
                 { 0,   0,   255, 80 },
@@ -22,7 +25,7 @@ namespace VIZ {
                 { 255, 0,   0, 40 }
         };
         double tailFactor = 0;
-        led_map *data = Vulcan121::createEmptyLEDMap();
+        led_map data{};
     };
 }
 

headers/VulcanoLE/Scripts/RainbowLine.h

@@ -5,13 +5,13 @@
 namespace VIZ {
     class RainbowLine : public VIZ {
         int currentColumn = 0;
-        double deltaNeeded = 100000.0;
+        double deltaNeeded = 0.0;
         double deltaElapsed = 0;
         rgba *colours = nullptr;
         int maxCols = 0;
         double lastValue = 0;
         double decayValue = 0;
-        double tailFactor = 0.3;
+        double tailFactor = 0.5;
     public:
         RainbowLine(AudioGrabber *pGrabber, Vulcan121 *vulcan);
         ~RainbowLine() override;
@@ -20,7 +20,7 @@ namespace VIZ {
         void calcNextDelta(double ratio);
         const char *name() override;
         std::string m_name = "Rainbow Line";
-        led_map *data = Vulcan121::createEmptyLEDMap();
+        led_map data{};
         bool firstUnder = true;
         double deltaMove(double val);
         void moveLine(double val, double d);

headers/VulcanoLE/Scripts/RainbowMap.h

@@ -19,7 +19,7 @@ namespace VIZ {
         void calcNextDelta(double ratio);
         const char *name() override;
         std::string m_name = "Rainbow Map";
-        led_map *data = Vulcan121::createEmptyLEDMap();
+        led_map data{};
         bool firstUnder = true;
         double deltaMove(double val);
         void moveRainbow(double d);

headers/VulcanoLE/Scripts/Random.h

@@ -4,23 +4,18 @@
 #include <VulcanoLE/Keyboards/Vulcan121.h>
 #include <VulcanoLE/Visual/VIZ.h>
 #include <vector>
+#include "VUtils/Random.h"
 
 namespace VIZ {
     class Random : public VIZ {
     protected:
-        led_map *map = nullptr;
+        led_map map{};
-        bool isReverse{ false };
+        VUtils::Random m_random;
-        bool emptyTicks{ false };
+        double m_angle{0.0};
     public:
         Random(AudioGrabber *pGrabber, Vulcan121 *vulcan);
-        ~Random() override;
         void onSetup() override;
         void onTick(float delta) override;
         const char *name() override;
-        float deltaElapsed;
-        float deltaNeeded{ 80000 };
-        int row;
-        int columnCount{0}; // for last selected row all previous draw full
-        int ticks;
     };
 }

headers/VulcanoLE/Scripts/Spectral.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <VulcanoLE/Visual/VIZ.h>
+#include <VulcanoLE/Audio/AudioGrabber.h>
+#include <vector>
+
+namespace VIZ {
+    struct Spectral : public VIZ {
+        Spectral(AudioGrabber *pGrabber, Vulcan121 *pVulcan121);
+        ~Spectral() override = default;
+        void onSetup() override;
+        void onTick(float delta) override;
+        const char *name() override;
+        std::string m_name = "SpectralO";
+        led_map map{};
+    };
+}
+

headers/VulcanoLE/Scripts/Spectrum.h

@@ -1,22 +1,20 @@
 #pragma once
 
-#include <VulcanoLE/Visual/VIZ.h>
 #include <VulcanoLE/Audio/AudioGrabber.h>
+#include <VulcanoLE/Visual/VIZ.h>
 
 namespace VIZ {
-    struct Spectrum : public VIZ {
+struct Spectrum : public VIZ {
-        Spectrum(AudioGrabber *pGrabber, Vulcan121 *pVulcan121);
+public:
-        ~Spectrum() override = default;
+  static constexpr int maxColors = 3;
-        void onSetup() override;
+  Spectrum(AudioGrabber *pGrabber, Vulcan121 *pVulcan121);
-        void onTick(float delta) override;
+  ~Spectrum() override = default;
-        double lastVal = 0;
+  void onSetup() override;
-        const char *name() override;
+  void onTick(float delta) override;
-        std::string m_name = "Spectrum One";
+  const char *name() override;
-        rgba colors[3] = {
-                { 0, 10, 180, 0 },
-                { 0, 180, 0, 0 },
-                { 150, 0, 0, 0 }
-        };
-    };
-}
 
+protected:
+  std::string m_name = "Spectrum One";
+  double m_angle = 0.0;
+};
+} // namespace VIZ

headers/VulcanoLE/Scripts/Strobo.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <VulcanoLE/Audio/AudioGrabber.h>
+#include <VulcanoLE/Visual/VIZ.h>
+
+namespace VIZ {
+struct Strobo : public VIZ {
+public:
+  Strobo(AudioGrabber *pGrabber, Vulcan121 *pVulcan121);
+  ~Strobo() override = default;
+  void onSetup() override;
+  void onTick(float delta) override;
+  const char *name() override;
+
+protected:
+  std::string m_name = "Strobo";
+  double m_sinPoint;
+  bool m_isStanding;
+  rgba m_color{};
+};
+} // namespace VIZ

headers/VulcanoLE/Scripts/TheUknown.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <VulcanoLE/Audio/AudioGrabber.h>
+#include <VulcanoLE/Keyboards/Vulcan121.h>
+#include <VulcanoLE/Visual/VIZ.h>
+#include <vector>
+#include "VUtils/Random.h"
+
+namespace VIZ {
+    class TheUnknown : public VIZ {
+    protected:
+        VUtils::Random m_random{};
+        led_map map{};
+    public:
+        TheUnknown(AudioGrabber *pGrabber, Vulcan121 *vulcan);
+        void onSetup() override;
+        void onTick(float delta) override;
+        const char *name() override;
+
+        double m_keyOffset[NUM_KEYS]{};
+        double m_keyHeightMap[NUM_KEYS]{};
+        double m_angle = 0.0001;
+    };
+}

headers/VulcanoLE/Visual/VisPlugins.h

@@ -3,7 +3,7 @@
 #include <vector>
 #include <VulcanoLE/Scripts/Spectrum.h>
 
-#define VIZSIZE 6
+#define VIZSIZE 10
 
 using micro = std::chrono::duration<double, std::micro>;
 using ms = std::chrono::duration<double, std::milli>;

main.cpp

@@ -37,7 +37,7 @@ int main(int argc, char **argv) {
     if (helper.openDevices() < 0) {
         ERR("Unable to find Keyboard!")
         exit(0);
-    };
+    }
     usleep(10000);
     auto runner = VisAudioRunner::create();
     runner->env = &config;
@@ -46,7 +46,7 @@ int main(int argc, char **argv) {
     runner->plugins->setCurrentMode(config.getAsInt("visual_mode", 1));
     while (shouldRun) {
         int mode;
-        LOGWN("Enter Visual Mode: %d-%d < 0 = EXIT:\t", 1, VIZSIZE)
+        LOGWN("Enter Visual Mode: %d-%d < 0 = EXIT: \n> ", 1, VIZSIZE)
         std::cin >> mode;
         if (std::cin.fail()) {
             ERR("ERROR -- You did not enter an integer")

src/VUtils/Math.cpp

@@ -17,4 +17,16 @@ namespace VUtils {
     double Math::map(double x, double in_min, double in_max, double out_min, double out_max) {
         return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
     }
+    double Math::cubicInterpolate (double y0, double y1, double y2, double y3, double factor)
+    {
+        double a0, a1, a2, a3, mu2;
+
+        mu2 = factor * factor;
+        a0 = y3 - y2 - y0 + y1;
+        a1 = y0 - y1 - a0;
+        a2 = y2 - y0;
+        a3 = y1;
+
+        return (a0 * factor * mu2 + a1 * mu2 + a2 * factor + a3);
+    }
 }

src/VUtils/Random.cpp

@@ -0,0 +1,21 @@
+#include <VUtils/Random.h>
+
+namespace VUtils {
+    Random::Random() : m_mt{ m_rd() } {
+    }
+
+    double Random::generate(double min, double max) {
+        return Random::the().get(min, max);
+    }
+
+    double Random::get(double min, double max) {
+        std::uniform_real_distribution<double> dist(min, max);
+        return dist(m_mt);
+    }
+    void Random::setDist(double min, double max) {
+        m_dist = std::uniform_real_distribution(min, max);
+    }
+    double Random::getFast() {
+        return m_dist(m_mt);
+    }
+}

src/VUtils/SimplexNoise.cpp

@@ -0,0 +1,475 @@
+/**
+ * @file    SimplexNoise.cpp
+ * @brief   A Perlin Simplex Noise C++ Implementation (1D, 2D, 3D).
+ *
+ * Copyright (c) 2014-2018 Sebastien Rombauts (sebastien.rombauts@gmail.com)
+ *
+ * This C++ implementation is based on the speed-improved Java version 2012-03-09
+ * by Stefan Gustavson (original Java source code in the public domain).
+ * http://webstaff.itn.liu.se/~stegu/simplexnoise/SimplexNoise.java:
+ * - Based on example code by Stefan Gustavson (stegu@itn.liu.se).
+ * - Optimisations by Peter Eastman (peastman@drizzle.stanford.edu).
+ * - Better rank ordering method by Stefan Gustavson in 2012.
+ *
+ * This implementation is "Simplex Noise" as presented by
+ * Ken Perlin at a relatively obscure and not often cited course
+ * session "Real-Time Shading" at Siggraph 2001 (before real
+ * time shading actually took on), under the title "hardware noise".
+ * The 3D function is numerically equivalent to his Java reference
+ * code available in the PDF course notes, although I re-implemented
+ * it from scratch to get more readable code. The 1D, 2D and 4D cases
+ * were implemented from scratch by me from Ken Perlin's text.
+ *
+ * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
+ * or copy at http://opensource.org/licenses/MIT)
+ */
+
+#include <VUtils/SimplexNoise.h>
+
+#include <cstdint>  // int32_t/uint8_t
+
+/**
+ * Computes the largest integer value not greater than the float one
+ *
+ * This method is faster than using (int32_t)std::floor(fp).
+ *
+ * I measured it to be approximately twice as fast:
+ *  float:  ~18.4ns instead of ~39.6ns on an AMD APU),
+ *  double: ~20.6ns instead of ~36.6ns on an AMD APU),
+ * Reference: http://www.codeproject.com/Tips/700780/Fast-floor-ceiling-functions
+ *
+ * @param[in] fp    float input value
+ *
+ * @return largest integer value not greater than fp
+ */
+static inline int32_t fastfloor(float fp) {
+    int32_t i = static_cast<int32_t>(fp);
+    return (fp < i) ? (i - 1) : (i);
+}
+
+/**
+ * Permutation table. This is just a random jumble of all numbers 0-255.
+ *
+ * This produce a repeatable pattern of 256, but Ken Perlin stated
+ * that it is not a problem for graphic texture as the noise features disappear
+ * at a distance far enough to be able to see a repeatable pattern of 256.
+ *
+ * This needs to be exactly the same for all instances on all platforms,
+ * so it's easiest to just keep it as static explicit data.
+ * This also removes the need for any initialisation of this class.
+ *
+ * Note that making this an uint32_t[] instead of a uint8_t[] might make the
+ * code run faster on platforms with a high penalty for unaligned single
+ * byte addressing. Intel x86 is generally single-byte-friendly, but
+ * some other CPUs are faster with 4-aligned reads.
+ * However, a char[] is smaller, which avoids cache trashing, and that
+ * is probably the most important aspect on most architectures.
+ * This array is accessed a *lot* by the noise functions.
+ * A vector-valued noise over 3D accesses it 96 times, and a
+ * float-valued 4D noise 64 times. We want this to fit in the cache!
+ */
+static const uint8_t perm[256] = {
+        151, 160, 137, 91, 90, 15,
+        131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23,
+        190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33,
+        88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166,
+        77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245, 40, 244,
+        102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196,
+        135, 130, 116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250, 124, 123,
+        5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42,
+        223, 183, 170, 213, 119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9,
+        129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228,
+        251, 34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145, 235, 249, 14, 239, 107,
+        49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150, 254,
+        138, 236, 205, 93, 222, 114, 67, 29, 24, 72, 243, 141, 128, 195, 78, 66, 215, 61, 156, 180
+};
+
+/**
+ * Helper function to hash an integer using the above permutation table
+ *
+ *  This inline function costs around 1ns, and is called N+1 times for a noise of N dimension.
+ *
+ *  Using a real hash function would be better to improve the "repeatability of 256" of the above permutation table,
+ * but fast integer Hash functions uses more time and have bad random properties.
+ *
+ * @param[in] i Integer value to hash
+ *
+ * @return 8-bits hashed value
+ */
+static inline uint8_t hash(int32_t i) {
+    return perm[static_cast<uint8_t>(i)];
+}
+
+/* NOTE Gradient table to test if lookup-table are more efficient than calculs
+static const float gradients1D[16] = {
+        -8.f, -7.f, -6.f, -5.f, -4.f, -3.f, -2.f, -1.f,
+         1.f,  2.f,  3.f,  4.f,  5.f,  6.f,  7.f,  8.f
+};
+*/
+
+/**
+ * Helper function to compute gradients-dot-residual vectors (1D)
+ *
+ * @note that these generate gradients of more than unit length. To make
+ * a close match with the value range of classic Perlin noise, the final
+ * noise values need to be rescaled to fit nicely within [-1,1].
+ * (The simplex noise functions as such also have different scaling.)
+ * Note also that these noise functions are the most practical and useful
+ * signed version of Perlin noise.
+ *
+ * @param[in] hash  hash value
+ * @param[in] x     distance to the corner
+ *
+ * @return gradient value
+ */
+static float grad(int32_t hash, float x) {
+    const int32_t h = hash & 0x0F;  // Convert low 4 bits of hash code
+    float grad = 1.0f + (h & 7);    // Gradient value 1.0, 2.0, ..., 8.0
+    if ((h & 8) != 0) grad = -grad; // Set a random sign for the gradient
+//  float grad = gradients1D[h];    // NOTE : Test of Gradient look-up table instead of the above
+    return (grad * x);              // Multiply the gradient with the distance
+}
+
+/**
+ * Helper functions to compute gradients-dot-residual vectors (2D)
+ *
+ * @param[in] hash  hash value
+ * @param[in] x     x coord of the distance to the corner
+ * @param[in] y     y coord of the distance to the corner
+ *
+ * @return gradient value
+ */
+static float grad(int32_t hash, float x, float y) {
+    const int32_t h = hash & 0x3F;  // Convert low 3 bits of hash code
+    const float u = h < 4 ? x : y;  // into 8 simple gradient directions,
+    const float v = h < 4 ? y : x;
+    return ((h & 1) ? -u : u) + ((h & 2) ? -2.0f * v : 2.0f * v); // and compute the dot product with (x,y).
+}
+
+/**
+ * Helper functions to compute gradients-dot-residual vectors (3D)
+ *
+ * @param[in] hash  hash value
+ * @param[in] x     x coord of the distance to the corner
+ * @param[in] y     y coord of the distance to the corner
+ * @param[in] z     z coord of the distance to the corner
+ *
+ * @return gradient value
+ */
+static float grad(int32_t hash, float x, float y, float z) {
+    int h = hash & 15;     // Convert low 4 bits of hash code into 12 simple
+    float u = h < 8 ? x : y; // gradient directions, and compute dot product.
+    float v = h < 4 ? y : h == 12 || h == 14 ? x : z; // Fix repeats at h = 12 to 15
+    return ((h & 1) ? -u : u) + ((h & 2) ? -v : v);
+}
+
+/**
+ * 1D Perlin simplex noise
+ *
+ *  Takes around 74ns on an AMD APU.
+ *
+ * @param[in] x float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::noise(float x) {
+    float n0, n1;   // Noise contributions from the two "corners"
+
+    // No need to skew the input space in 1D
+
+    // Corners coordinates (nearest integer values):
+    int32_t i0 = fastfloor(x);
+    int32_t i1 = i0 + 1;
+    // Distances to corners (between 0 and 1):
+    float x0 = x - i0;
+    float x1 = x0 - 1.0f;
+
+    // Calculate the contribution from the first corner
+    float t0 = 1.0f - x0*x0;
+//  if(t0 < 0.0f) t0 = 0.0f; // not possible
+    t0 *= t0;
+    n0 = t0 * t0 * grad(hash(i0), x0);
+
+    // Calculate the contribution from the second corner
+    float t1 = 1.0f - x1*x1;
+//  if(t1 < 0.0f) t1 = 0.0f; // not possible
+    t1 *= t1;
+    n1 = t1 * t1 * grad(hash(i1), x1);
+
+    // The maximum value of this noise is 8*(3/4)^4 = 2.53125
+    // A factor of 0.395 scales to fit exactly within [-1,1]
+    return 0.395f * (n0 + n1);
+}
+
+/**
+ * 2D Perlin simplex noise
+ *
+ *  Takes around 150ns on an AMD APU.
+ *
+ * @param[in] x float coordinate
+ * @param[in] y float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::noise(float x, float y) {
+    float n0, n1, n2;   // Noise contributions from the three corners
+
+    // Skewing/Unskewing factors for 2D
+    static const float F2 = 0.366025403f;  // F2 = (sqrt(3) - 1) / 2
+    static const float G2 = 0.211324865f;  // G2 = (3 - sqrt(3)) / 6   = F2 / (1 + 2 * K)
+
+    // Skew the input space to determine which simplex cell we're in
+    const float s = (x + y) * F2;  // Hairy factor for 2D
+    const float xs = x + s;
+    const float ys = y + s;
+    const int32_t i = fastfloor(xs);
+    const int32_t j = fastfloor(ys);
+
+    // Unskew the cell origin back to (x,y) space
+    const float t = static_cast<float>(i + j) * G2;
+    const float X0 = i - t;
+    const float Y0 = j - t;
+    const float x0 = x - X0;  // The x,y distances from the cell origin
+    const float y0 = y - Y0;
+
+    // For the 2D case, the simplex shape is an equilateral triangle.
+    // Determine which simplex we are in.
+    int32_t i1, j1;  // Offsets for second (middle) corner of simplex in (i,j) coords
+    if (x0 > y0) {   // lower triangle, XY order: (0,0)->(1,0)->(1,1)
+        i1 = 1;
+        j1 = 0;
+    } else {   // upper triangle, YX order: (0,0)->(0,1)->(1,1)
+        i1 = 0;
+        j1 = 1;
+    }
+
+    // A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and
+    // a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where
+    // c = (3-sqrt(3))/6
+
+    const float x1 = x0 - i1 + G2;            // Offsets for middle corner in (x,y) unskewed coords
+    const float y1 = y0 - j1 + G2;
+    const float x2 = x0 - 1.0f + 2.0f * G2;   // Offsets for last corner in (x,y) unskewed coords
+    const float y2 = y0 - 1.0f + 2.0f * G2;
+
+    // Work out the hashed gradient indices of the three simplex corners
+    const int gi0 = hash(i + hash(j));
+    const int gi1 = hash(i + i1 + hash(j + j1));
+    const int gi2 = hash(i + 1 + hash(j + 1));
+
+    // Calculate the contribution from the first corner
+    float t0 = 0.5f - x0*x0 - y0*y0;
+    if (t0 < 0.0f) {
+        n0 = 0.0f;
+    } else {
+        t0 *= t0;
+        n0 = t0 * t0 * grad(gi0, x0, y0);
+    }
+
+    // Calculate the contribution from the second corner
+    float t1 = 0.5f - x1*x1 - y1*y1;
+    if (t1 < 0.0f) {
+        n1 = 0.0f;
+    } else {
+        t1 *= t1;
+        n1 = t1 * t1 * grad(gi1, x1, y1);
+    }
+
+    // Calculate the contribution from the third corner
+    float t2 = 0.5f - x2*x2 - y2*y2;
+    if (t2 < 0.0f) {
+        n2 = 0.0f;
+    } else {
+        t2 *= t2;
+        n2 = t2 * t2 * grad(gi2, x2, y2);
+    }
+
+    // Add contributions from each corner to get the final noise value.
+    // The result is scaled to return values in the interval [-1,1].
+    return 45.23065f * (n0 + n1 + n2);
+}
+
+
+/**
+ * 3D Perlin simplex noise
+ *
+ * @param[in] x float coordinate
+ * @param[in] y float coordinate
+ * @param[in] z float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::noise(float x, float y, float z) {
+    float n0, n1, n2, n3; // Noise contributions from the four corners
+
+    // Skewing/Unskewing factors for 3D
+    static const float F3 = 1.0f / 3.0f;
+    static const float G3 = 1.0f / 6.0f;
+
+    // Skew the input space to determine which simplex cell we're in
+    float s = (x + y + z) * F3; // Very nice and simple skew factor for 3D
+    int i = fastfloor(x + s);
+    int j = fastfloor(y + s);
+    int k = fastfloor(z + s);
+    float t = (i + j + k) * G3;
+    float X0 = i - t; // Unskew the cell origin back to (x,y,z) space
+    float Y0 = j - t;
+    float Z0 = k - t;
+    float x0 = x - X0; // The x,y,z distances from the cell origin
+    float y0 = y - Y0;
+    float z0 = z - Z0;
+
+    // For the 3D case, the simplex shape is a slightly irregular tetrahedron.
+    // Determine which simplex we are in.
+    int i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords
+    int i2, j2, k2; // Offsets for third corner of simplex in (i,j,k) coords
+    if (x0 >= y0) {
+        if (y0 >= z0) {
+            i1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 1; k2 = 0; // X Y Z order
+        } else if (x0 >= z0) {
+            i1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 0; k2 = 1; // X Z Y order
+        } else {
+            i1 = 0; j1 = 0; k1 = 1; i2 = 1; j2 = 0; k2 = 1; // Z X Y order
+        }
+    } else { // x0<y0
+        if (y0 < z0) {
+            i1 = 0; j1 = 0; k1 = 1; i2 = 0; j2 = 1; k2 = 1; // Z Y X order
+        } else if (x0 < z0) {
+            i1 = 0; j1 = 1; k1 = 0; i2 = 0; j2 = 1; k2 = 1; // Y Z X order
+        } else {
+            i1 = 0; j1 = 1; k1 = 0; i2 = 1; j2 = 1; k2 = 0; // Y X Z order
+        }
+    }
+
+    // A step of (1,0,0) in (i,j,k) means a step of (1-c,-c,-c) in (x,y,z),
+    // a step of (0,1,0) in (i,j,k) means a step of (-c,1-c,-c) in (x,y,z), and
+    // a step of (0,0,1) in (i,j,k) means a step of (-c,-c,1-c) in (x,y,z), where
+    // c = 1/6.
+    float x1 = x0 - i1 + G3; // Offsets for second corner in (x,y,z) coords
+    float y1 = y0 - j1 + G3;
+    float z1 = z0 - k1 + G3;
+    float x2 = x0 - i2 + 2.0f * G3; // Offsets for third corner in (x,y,z) coords
+    float y2 = y0 - j2 + 2.0f * G3;
+    float z2 = z0 - k2 + 2.0f * G3;
+    float x3 = x0 - 1.0f + 3.0f * G3; // Offsets for last corner in (x,y,z) coords
+    float y3 = y0 - 1.0f + 3.0f * G3;
+    float z3 = z0 - 1.0f + 3.0f * G3;
+
+    // Work out the hashed gradient indices of the four simplex corners
+    int gi0 = hash(i + hash(j + hash(k)));
+    int gi1 = hash(i + i1 + hash(j + j1 + hash(k + k1)));
+    int gi2 = hash(i + i2 + hash(j + j2 + hash(k + k2)));
+    int gi3 = hash(i + 1 + hash(j + 1 + hash(k + 1)));
+
+    // Calculate the contribution from the four corners
+    float t0 = 0.6f - x0*x0 - y0*y0 - z0*z0;
+    if (t0 < 0) {
+        n0 = 0.0;
+    } else {
+        t0 *= t0;
+        n0 = t0 * t0 * grad(gi0, x0, y0, z0);
+    }
+    float t1 = 0.6f - x1*x1 - y1*y1 - z1*z1;
+    if (t1 < 0) {
+        n1 = 0.0;
+    } else {
+        t1 *= t1;
+        n1 = t1 * t1 * grad(gi1, x1, y1, z1);
+    }
+    float t2 = 0.6f - x2*x2 - y2*y2 - z2*z2;
+    if (t2 < 0) {
+        n2 = 0.0;
+    } else {
+        t2 *= t2;
+        n2 = t2 * t2 * grad(gi2, x2, y2, z2);
+    }
+    float t3 = 0.6f - x3*x3 - y3*y3 - z3*z3;
+    if (t3 < 0) {
+        n3 = 0.0;
+    } else {
+        t3 *= t3;
+        n3 = t3 * t3 * grad(gi3, x3, y3, z3);
+    }
+    // Add contributions from each corner to get the final noise value.
+    // The result is scaled to stay just inside [-1,1]
+    return 32.0f*(n0 + n1 + n2 + n3);
+}
+
+
+/**
+ * Fractal/Fractional Brownian Motion (fBm) summation of 1D Perlin Simplex noise
+ *
+ * @param[in] octaves   number of fraction of noise to sum
+ * @param[in] x         float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::fractal(size_t octaves, float x) const {
+    float output    = 0.f;
+    float denom     = 0.f;
+    float frequency = mFrequency;
+    float amplitude = mAmplitude;
+
+    for (size_t i = 0; i < octaves; i++) {
+        output += (amplitude * noise(x * frequency));
+        denom += amplitude;
+
+        frequency *= mLacunarity;
+        amplitude *= mPersistence;
+    }
+
+    return (output / denom);
+}
+
+/**
+ * Fractal/Fractional Brownian Motion (fBm) summation of 2D Perlin Simplex noise
+ *
+ * @param[in] octaves   number of fraction of noise to sum
+ * @param[in] x         x float coordinate
+ * @param[in] y         y float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::fractal(size_t octaves, float x, float y) const {
+    float output = 0.f;
+    float denom  = 0.f;
+    float frequency = mFrequency;
+    float amplitude = mAmplitude;
+
+    for (size_t i = 0; i < octaves; i++) {
+        output += (amplitude * noise(x * frequency, y * frequency));
+        denom += amplitude;
+
+        frequency *= mLacunarity;
+        amplitude *= mPersistence;
+    }
+
+    return (output / denom);
+}
+
+/**
+ * Fractal/Fractional Brownian Motion (fBm) summation of 3D Perlin Simplex noise
+ *
+ * @param[in] octaves   number of fraction of noise to sum
+ * @param[in] x         x float coordinate
+ * @param[in] y         y float coordinate
+ * @param[in] z         z float coordinate
+ *
+ * @return Noise value in the range[-1; 1], value of 0 on all integer coordinates.
+ */
+float SimplexNoise::fractal(size_t octaves, float x, float y, float z) const {
+    float output = 0.f;
+    float denom  = 0.f;
+    float frequency = mFrequency;
+    float amplitude = mAmplitude;
+
+    for (size_t i = 0; i < octaves; i++) {
+        output += (amplitude * noise(x * frequency, y * frequency, z * frequency));
+        denom += amplitude;
+
+        frequency *= mLacunarity;
+        amplitude *= mPersistence;
+    }
+
+    return (output / denom);
+}

src/VulcanoLE/Audio/AudioGrabber.cpp

@@ -2,6 +2,7 @@
 #include <VulcanoLE/Audio/AudioGrabber.h>
 #include <VUtils/Logging.h>
 #include <VulcanoLE/Audio/JackClient.h>
+#include "VUtils/Math.h"
 
 
 AudioGrabber::AudioGrabber() = default;
@@ -27,27 +28,28 @@ void AudioGrabber::init() {
     m_buffer = static_cast<stereoSample *>(calloc(BUFFER_SIZE, sizeof(stereoSample)));
     if (env != nullptr)
         m_scale = env->getAsDouble("audio_scale", 1.0);
+    m_filter.scale = 1.0;
     DBG("SET Audio Scale: %.3f", m_scale)
     loudness = { 0.0, 0.0 };
 }
 
 void AudioGrabber::calculateRMS(stereoSample *pFrame) {
-    float squareL = 0, meanL;
+    double squareL = 0, meanL;
-    float squareR = 0, meanR;
+    double squareR = 0, meanR;
     for (int i = 0; i < availableData; i++) {
-        squareL += std::pow(pFrame[0].l * m_scale, 2);
+        squareL += std::pow(pFrame[i].l * m_scale, 2);
-        squareR += std::pow(pFrame[0].r * m_scale, 2);
+        squareR += std::pow(pFrame[i].r * m_scale, 2);
     }
-    meanL = (squareL / (float) (BUFFER_SIZE));
+    meanL = (squareL / (float) (availableData));
-    meanR = (squareR / (float) (BUFFER_SIZE));
+    meanR = (squareR / (float) (availableData));
-    loudness = { std::sqrt(meanL), std::sqrt(meanR) };
+    loudness = { (float) std::sqrt(meanL), (float) std::sqrt(meanR) };
 }
 
 void AudioGrabber::calculatePEAK(stereoSample *pFrame) {
     stereoSampleFrame max = { 0, 0 };
     for (int i = 0; i < availableData; i++) {
-        float left = std::abs(pFrame[0].l * m_scale);
+        auto left = (float) std::abs(pFrame[i].l * m_scale);
-        float right = std::abs(pFrame[0].r * m_scale);
+        auto right = (float) std::abs(pFrame[i].r * m_scale);
         if (left > max.l)
             max.l = left;
         if (right > max.r)
@@ -74,6 +76,9 @@ bool AudioGrabber::work() {
             case ReqMode::PEAK:
                 calculatePEAK(m_buffer);
                 break;
+            case ReqMode::FILTER:
+                loudness = m_filter.work(m_buffer, availableData);
+                break;
             default: {
                 calculateRMS(m_buffer);
                 calculatePEAK(m_buffer);
@@ -85,3 +90,16 @@ bool AudioGrabber::work() {
         return false;
     }
 }
+Audio::FilterHelper &AudioGrabber::getFilter() {
+    return m_filter;
+}
+double AudioGrabber::getBass() {
+    auto fftData = fft.getData();
+    auto val = 0.0;
+    for (int i = 1; i < 4; ++i) {
+        auto avg = (fftData->leftChannel[i] + fftData->rightChannel[i]) / 2.0;
+        if (avg > val)
+            val = avg;
+    }
+    return VUtils::Math::clamp(val, 1, 255);
+}

src/VulcanoLE/Audio/Filter.cpp

@@ -0,0 +1,71 @@
+#include <VulcanoLE/Audio/Filter.h>
+#include <VulcanoLE/Audio/Types.h>
+#include <valarray>
+#include <VUtils/Math.h>
+#include <VUtils/Logging.h>
+
+namespace Audio {
+
+    Filter::Filter() {
+        for (int i = 0; i < 3; ++i) {
+            m_filterOutput[i] = 0.0f;
+            for (int j = 0; j < 16; ++j) {
+                m_feedback[i][j] = 0.0f;
+            }
+        }
+    }
+    float Filter::process(float input, float cut, float) {
+        cut *= cut;
+        output = input;
+        if (m_counter >= 8)
+            m_counter = 0;
+        for (int i = 0; i < 4; ++i) {
+            output = output * cut + m_feedback[i][m_counter + 7] * (1.f - cut);
+            m_feedback[i][m_counter] = output;
+            m_feedback[i][m_counter + 8] = output;
+            m_filterOutput[i] = output;
+        }
+        m_counter++;
+        return m_filterOutput[3];
+    }
+    stereoSampleFrame FilterHelper::work(stereoSample *buffer, int size) {
+        output.clear();
+        output.resize(size);
+        double peakL = 0;
+        double peakR = 0;
+        for (int i = 0; i < size; ++i) {
+            output[i].r = filter_right.process(buffer[i].r, cutoff, 0);
+            output[i].l = filter_left.process(buffer[i].l, cutoff, 0);
+            double l = std::abs(output[i].l);
+            double r = std::abs(output[i].r);
+            if (l > peakL) peakL = l;
+            if (r > peakR) peakR = r;
+        }
+        return doLimit(peakL, peakR);
+    }
+    stereoSampleFrame FilterHelper::doLimit(double left, double right) {
+        if (left > m_limit) {
+            m_limit = left + 0.05;
+            DBG("Overshot! New Limit: %.2f", m_limit)
+        }
+        if (right > m_limit) {
+            m_limit = right + 0.05;
+            DBG("Overshot! New Limit: %.2f", m_limit)
+        }
+
+        m_limit = std::clamp(m_limit, 0.0, 1.0);
+        if (left < 0.00005 && right < 0.00005) {
+            // reset limit :D
+            overshot_times++;
+            if (overshot_times > 10000 && m_limit != FILTER_LIMIT) {
+                DBG("OVER 10000 SILENCE SIGNALS... RESET TO INITIAL LIMIT")
+                m_limit = FILTER_LIMIT;
+                overshot_times = 0;
+            }
+        }
+        return {
+                (float) VUtils::Math::map(left, 0, m_limit, 0, 255),
+                (float) VUtils::Math::map(right, 0, m_limit, 0, 255),
+        };
+    }
+}

src/VulcanoLE/Colors/ColorHelper.cpp

@@ -1,44 +1,102 @@
 #include <VulcanoLE/Colors/ColorHelper.h>
 
 namespace Color {
-    rgba Generator::rgbFromRatio(double ratio, int16_t alpha = 255) {
+rgba Generator::rgbFromRatio(double ratio, int16_t alpha = 255) {
-        int normalized = int(ratio * 256 * 6);
+  int normalized = int(ratio * 256 * 6);
-        int x = normalized % 256;
+  int x = normalized % 256;
 
-        int16_t red = 0, green = 0, blue = 0;
+  int16_t red = 0, green = 0, blue = 0;
-        switch (normalized / 256) {
+  switch (normalized / 256) {
-            case 0:
+  case 0:
-                red = 255;
+    red = 255;
-                green = x;
+    green = x;
-                blue = 0;
+    blue = 0;
-                break;
+    break;
-            case 1:
+  case 1:
-                red = 255 - x;
+    red = 255 - x;
-                green = 255;
+    green = 255;
-                blue = 0;
+    blue = 0;
-                break;
+    break;
-            case 2:
+  case 2:
-                red = 0;
+    red = 0;
-                green = 255;
+    green = 255;
-                blue = x;
+    blue = x;
-                break;
+    break;
-            case 3:
+  case 3:
-                red = 0;
+    red = 0;
-                green = 255 - x;
+    green = 255 - x;
-                blue = 255;
+    blue = 255;
-                break;
+    break;
-            case 4:
+  case 4:
-                red = x;
+    red = x;
-                green = 0;
+    green = 0;
-                blue = 255;
+    blue = 255;
-                break;
+    break;
-            case 5:
+  case 5:
-                red = 255;
+    red = 255;
-                green = 0;
+    green = 0;
-                blue = 255 - x;
+    blue = 255 - x;
-                break;
+    break;
-        }
+  }
 
-        return { red, green, blue, alpha };
+  return {red, green, blue, alpha};
-    }
 }
+
+rgb Generator::rgbFromHSV(hsv in) {
+  double hh, p, q, t, ff;
+  long i;
+  rgb out;
+
+  if (in.s <= 0.0) { // < is bogus, just shuts up warnings
+    out.r = in.v;
+    out.g = in.v;
+    out.b = in.v;
+    return out;
+  }
+  hh = in.h;
+  if (hh >= 360.0)
+    hh = 0.0;
+  hh /= 60.0;
+  i = (long)hh;
+  ff = hh - i;
+  p = in.v * (1.0 - in.s);
+  q = in.v * (1.0 - (in.s * ff));
+  t = in.v * (1.0 - (in.s * (1.0 - ff)));
+
+  switch (i) {
+  case 0:
+    out.r = in.v;
+    out.g = t;
+    out.b = p;
+    break;
+  case 1:
+    out.r = q;
+    out.g = in.v;
+    out.b = p;
+    break;
+  case 2:
+    out.r = p;
+    out.g = in.v;
+    out.b = t;
+    break;
+
+  case 3:
+    out.r = p;
+    out.g = q;
+    out.b = in.v;
+    break;
+  case 4:
+    out.r = t;
+    out.g = p;
+    out.b = in.v;
+    break;
+  case 5:
+  default:
+    out.r = in.v;
+    out.g = p;
+    out.b = q;
+    break;
+  }
+  return out;
+}
+} // namespace Color

src/VulcanoLE/Keyboards/Vulcan121.cpp

@@ -7,10 +7,10 @@
 
 Vulcan121::Vulcan121(HIDHelper *helper)
         : m_helper(helper) {
-    for (auto &item : keyMapRow) {
+    for (auto &item: keyMapRow) {
         item = new keys;
     }
-    for (auto &item : keyMapCol) {
+    for (auto &item: keyMapCol) {
         item = new keys;
     }
 
@@ -30,7 +30,7 @@ Vulcan121::~Vulcan121() {
 
 // Colors are in blocks of 12 keys (2 columns). Color parts are sorted by color e.g. the red
 // values for all 12 keys are first then come the green values etc.
-int Vulcan121::sendLedMap(led_map *src, bool deleteMap) {
+int Vulcan121::sendLedMap(led_map &src) {
     int i, k;
     rgba rgb;
     unsigned char ledBuffer[448]{};
@@ -41,7 +41,7 @@ int Vulcan121::sendLedMap(led_map *src, bool deleteMap) {
     ledBuffer[3] = 0xb4;
     for (k = 0; k < NUM_KEYS; k++) {
         // Prepare Color
-        auto use = m_fixed[k] ? *(m_fixed[k]) : src ? src->key[k] : m_colorOff;
+        auto use = m_fixed[k] ? *(m_fixed[k]) : src.key[k];
         rgb.a = (int16_t) VUtils::Math::clamp(use.a, 0, 255);
         double factor = rgb.a / 255.0;
         rgb.r = (int16_t) VUtils::Math::clamp(std::round(use.r * factor), 0, 255);
@@ -61,34 +61,26 @@ int Vulcan121::sendLedMap(led_map *src, bool deleteMap) {
         memcpy(&buffer[1], &ledBuffer[index], 64);
         if (hid_write(m_helper->m_ledDevice, buffer, 65) != 65) {
             ERR("Write failed")
-            if (deleteMap)
-                delete src;
             return 0;
         }
     }
-    if (deleteMap)
-        delete src;
     return 1;
 }
 int Vulcan121::sendToLEDs(rgba rgb) {
-    auto *map = new led_map();
+    auto map = led_map();
-    for (auto &i : map->key) {
+    for (auto &i: map.key) {
         i = rgb;
     }
-    int st = sendLedMap(map, true);
+    int st = sendLedMap(map);
     return st;
 }
 
-led_map *Vulcan121::createEmptyLEDMap() {
-    return new led_map();
-}
-
 bool Vulcan121::sendInitSequence() {
     LOG("Sending device init sequence...")
     unsigned char a[9] = { 0x15, 0x05, 0x07, 0x0a, 0x0b, 0x06, 0x09, 0x0d, 0x13 };
     if (!queryCtrlReport(0x0f))
         return false;
-    for (auto i : a) {
+    for (auto i: a) {
         if (!sendCtrlReport(i) || !waitForCtrlDev()) {
             return false;
         }
@@ -327,25 +319,41 @@ const keys *Vulcan121::getRow(int row) {
     return keyMapRow[row];
 }
 
-void Vulcan121::fadeOutMap(led_map *map, double factor = 0.3) {
+void Vulcan121::fadeOutMap(led_map &map, double factor = 0.3) {
-    for (auto &i : map->key) {
+    for (auto &i: map.key) {
         i.a *= factor;
     }
 }
 
 // Column FadeOut! Check if previous Col is brighter!
-void Vulcan121::fadeOutMapColumn(led_map *map, double factor) {
+void Vulcan121::fadeOutMapColumn(led_map &map, double factor) {
     for (int i = 0; i < NUM_COLS; ++i) {
         // prev check if not 0
         auto *columnA = getColumn(i);
         int16_t colorB = 0;
-        if (i > 0 && map->key[columnA->index[0]].a > 0.1) {
+        if (i > 0 && map.key[columnA->index[0]].a > 0.1) {
             auto columnB = getColumn(i - 1);
-            colorB = map->key[columnB->index[0]].a;
+            colorB = map.key[columnB->index[0]].a;
         }
         for (int j = 0; j < columnA->count; ++j) {
-            auto &colorA = map->key[columnA->index[j]];
+            auto &colorA = map.key[columnA->index[j]];
             colorA.a = colorB != 0 && colorB > colorA.a ? colorB * 1.3 : colorA.a * factor;
         }
     }
 }
+
+void Vulcan121::setColor(led_map &map, rgba color) {
+    for (auto &i: map.key) {
+        i.r = color.r;
+        i.g = color.g;
+        i.b = color.b;
+        i.a = color.a;
+    }
+}
+void Vulcan121::setColorNoBrightness(led_map &map, rgba color) {
+    for (auto &i: map.key) {
+        i.r = color.r;
+        i.g = color.g;
+        i.b = color.b;
+    }
+}

src/VulcanoLE/Scripts/BassHistory.cpp

@@ -0,0 +1,56 @@
+#include <VulcanoLE/Scripts/BassHistory.h>
+#include <VulcanoLE/Colors/ColorHelper.h>
+
+namespace VIZ {
+
+    BassHistory::BassHistory(AudioGrabber *pGrabber, Vulcan121 *pVulcan121) : VIZ(pGrabber, pVulcan121){
+        for (auto &item : map.key) {
+            item.a = 0;
+        }
+        m_history.resize(keyboardData.num_cols);
+    }
+
+    void BassHistory::onSetup() {
+        keyboard->sendToLEDs({ 0, 0, 0, 0 });
+        grabber->requestMode = AudioGrabber::ReqMode::FFT;
+    }
+
+    void BassHistory::onTick(float delta) {
+        auto data = grabber->fft.getData()->leftChannel;
+        auto val = 0.0;
+        for (int i = 1; i < 4; ++i) {
+            if (data[i] > val) {
+                val = data[i];
+            }
+        }
+        pushNew(val);
+        for (int i = 0; i < keyboardData.num_cols; ++i) {
+            auto col = keyboard->getColumn(i);
+            for (int j = 0; j < col->count; j++) {
+                auto& color = map.key[col->index[j]];
+                color.a = m_history[i];
+                auto newColor = Color::Generator::rgbFromHSV({
+                    m_history[i] / 255 * 360,
+                    1,
+                    1
+                });
+                color.r = int16_t(newColor.r * 255);
+                color.g = int16_t(newColor.g * 255);
+                color.b = int16_t(newColor.b * 255);
+            }
+        }
+        keyboard->sendLedMap(map);
+    }
+
+    const char *BassHistory::name() {
+        return m_name.c_str();
+    }
+
+    void BassHistory::pushNew(double val) {
+        for (int i = 1; i < m_history.size(); ++i) {
+            m_history[i - 1] = m_history[i];
+        }
+        m_history[m_history.size()-1] = val;
+    }
+
+}

src/VulcanoLE/Scripts/Loudness.cpp

@@ -4,19 +4,46 @@ namespace VIZ {
     Loudness::Loudness(AudioGrabber *pGrabber, Vulcan121 *pVulcan121) : VIZ(pGrabber, pVulcan121) {}
 
     void Loudness::onSetup() {
-        keyboard->sendToLEDs({ 0, 0, 0, 0 });
+        if (isSetup) {
-        grabber->requestMode = AudioGrabber::ReqMode::PEAK;
+            double i = 1;
-        usleep(100000);
+            bool wasFull = false;
+            for (;;) {
+                if (frameWidth >= 1.0) frameWidth = 1;
+                i += wasFull ? -.7 : .5;
+                if (i >= 100) wasFull = true;
+                drawSetup(i / 100.0f);
+                if (wasFull && i >= 100) {
+                    for (int j = 0; j < 5; ++j) {
+                        usleep(100000);
+                        drawSetup(0);
+                        usleep(100000);
+                        drawSetup(1);
+                    }
+                }
+                if (wasFull && i <= 0) {
+                    frameWidth = 1;
+                    break;
+                }
+            }
+            usleep(200000);
+            isSetup = false;
+        }
+
+        grabber->requestMode = AudioGrabber::ReqMode::RMS;
     }
 
     void Loudness::onTick(float delta) {
-        Vulcan121::fadeOutMap(data, tailFactor);
+        if (isSetup) {
+            return;
+        }
         stereoSample val = grabber->getLoudness();
         val.l = val.l > 1.0f ? 1.0f : val.l;
         val.r = val.r > 1.0f ? 1.0f : val.r;
         setForChannel(val.l, 0);
         setForChannel(val.r, 1);
-        keyboard->sendLedMap(data, false);
+        drawFrame(0);
+        drawFrame(5);
+        keyboard->sendLedMap(data);
     }
 
     const char *Loudness::name() {
@@ -27,24 +54,34 @@ namespace VIZ {
         // because we have stereo we need to move on the rows
         int offset = channel == 0 ? 1 : 3;
         int until = channel == 0 ? 3 : 5;
-        colours[channel].a = value * 128.0;
+        auto color = colours[channel];
+        color.a = value * 255.0;
         for (int i = offset; i < until; ++i) {
             auto row = keyboard->getRow(i);
             int to = row->count * value;
-            for (int j = 0; j < to; ++j) {
+            for (int j = 0; j < row->count; ++j) {
                 auto index = row->index[j];
-                data[0].key[index] = colours[channel];
+                if (j < to)
+                    data.key[index] = color;
+                else
+                    data.key[index].a = 0;
             }
         }
-        drawFrame(0);
-        drawFrame(5);
     }
 
     void Loudness::drawFrame(int toRow) {
         auto row = keyboard->getRow(toRow);
-        for (int j = 0; j < row->count; ++j) {
+        for (int j = 0; j < row->count * frameWidth; ++j) {
             auto index = row->index[j];
-            data[0].key[index] = colours[2];
+            data.key[index] = colours[2];
         }
     }
+    void Loudness::drawSetup(float val) {
+        setForChannel(val, 0);
+        setForChannel(val, 1);
+        frameWidth = val;
+        drawFrame(0);
+        drawFrame(5);
+        keyboard->sendLedMap(data);
+    }
 }

src/VulcanoLE/Scripts/PoliceLike.cpp

@@ -12,7 +12,7 @@ namespace VIZ {
     }
 
     void PoliceLike::onTick(float delta) {
-        auto map = Vulcan121::createEmptyLEDMap();
+        led_map map{};
         auto data = grabber->fft.getData()->leftChannel;
         auto val = 0.0;
         for (int i = 1; i < 3; ++i) {
@@ -29,10 +29,10 @@ namespace VIZ {
         for (int i = 0; i < max; ++i) {
             auto col = keyboard->getColumn(i + colOff);
             for (int j = 0; j < col->count; ++j) {
-                map[0].key[col->index[j]] = colors[colorInd];
+                map.key[col->index[j]] = colors[colorInd];
             }
         }
-        keyboard->sendLedMap(map, true);
+        keyboard->sendLedMap(map);
     }
 
     void PoliceLike::switchOnPeak(double peak) {

src/VulcanoLE/Scripts/RainbowLine.cpp

@@ -3,7 +3,7 @@
 #include <VUtils/Logging.h>
 #include <VUtils/Math.h>
 
-#define MAX_DELTA 808000
+#define MAX_DELTA 0.808
 #define MAX_PEAK 170
 
 namespace VIZ {
@@ -17,7 +17,6 @@ namespace VIZ {
     }
     RainbowLine::~RainbowLine() {
         delete[] colours;
-        delete data;
     }
     void RainbowLine::onSetup() {
         currentColumn = 0;
@@ -25,18 +24,11 @@ namespace VIZ {
         tailFactor = VUtils::Math::clamp(grabber->env->getAsDouble("rainbow_tail_factor", 0.3), 0.0, 0.9);
         keyboard->sendToLEDs({ 0, 0, 0, 0 });
         grabber->requestMode = AudioGrabber::ReqMode::FFT;
-        usleep(100000);
     }
 
     void RainbowLine::onTick(float delta) {
         deltaElapsed += delta;
-        auto fftData = grabber->fft.getData()->leftChannel;
+        auto val = grabber->getBass();
-        auto val = 0.0;
-        for (int i = 1; i < 4; ++i) {
-            auto avg = fftData[i];
-            if (avg > val)
-                val = avg;
-        }
         val = VUtils::Math::clamp(val, 0, 255);
         double avg = deltaMove(val);
         if (deltaElapsed >= deltaNeeded) {
@@ -49,7 +41,7 @@ namespace VIZ {
         moveLine(val, tailFactor);
         lastValue = avg;
         // we clean up the map self later! :)
-        keyboard->sendLedMap(data, false);
+        keyboard->sendLedMap(data);
     }
 
     double RainbowLine::deltaMove(double val) {
@@ -63,7 +55,7 @@ namespace VIZ {
             firstUnder = true;
         }
         if (avg < 10) {
-            deltaNeeded = 1000000000;
+            deltaNeeded = 10;
         }
         if (decayValue >= 0)
             decayValue -= 10;
@@ -88,7 +80,7 @@ namespace VIZ {
         auto column = keyboard->getColumn(col);
         for (int i = 0; i < column->count; ++i) {
             auto index = column->index[i];
-            data[0].key[index] = colours[currentColumn];
+            data.key[index] = colours[currentColumn];
         }
     }
 }

src/VulcanoLE/Scripts/RainbowMap.cpp

@@ -17,7 +17,6 @@ namespace VIZ {
     }
     RainbowMap::~RainbowMap() {
         delete[] colours;
-        delete data;
     }
     void RainbowMap::onSetup() {
         currentColumn = 0;
@@ -48,7 +47,7 @@ namespace VIZ {
         moveRainbow(avg);
         lastValue = avg;
         // we clean up the map self later! :)
-        keyboard->sendLedMap(data, false);
+        keyboard->sendLedMap(data);
     }
 
     double RainbowMap::deltaMove(double val) {
@@ -101,7 +100,7 @@ namespace VIZ {
         }
         for (int i = 0; i < column->count; ++i) {
             auto index = column->index[i];
-            data[0].key[index] = colours[colIndex];
+            data.key[index] = colours[colIndex];
         }
     }
 }

src/VulcanoLE/Scripts/Random.cpp

@@ -1,83 +1,44 @@
 #include <VulcanoLE/Scripts/Random.h>
-#include <VUtils/Logging.h>
+#include <VulcanoLE/Colors/ColorHelper.h>
-#include <VUtils/Math.h>
+#include <cmath>
 
 namespace VIZ {
     Random::Random(AudioGrabber *pGrabber, Vulcan121 *vulcan) : VIZ(pGrabber, vulcan) {
+        m_random.setDist(0, keyboardData.num_keys);
     }
     void Random::onSetup() {
         keyboard->sendToLEDs({ 0, 0, 0, 0 });
-        if (map == nullptr) {
+        Vulcan121::setColor(map, {255,155,0,255});
-            map = Vulcan121::createEmptyLEDMap();
-            for (auto &color : map->key) {
-                color.r = 255;
-                color.b = 155;
-                color.a = 0;
-            }
-        }
         grabber->requestMode = AudioGrabber::ReqMode::FFT;
-        usleep(100000);
     }
-    void Random::onTick(float delta) {
+    void Random::onTick(float /*delta*/) {
-        deltaElapsed += delta;
+        double val = grabber->getBass();
-        auto fftData = grabber->fft.getData()->leftChannel;
+        double energy = val / 255.0;
-        auto val = 0.0;
+        uint16_t half = val / 2;
-        for (int i = 1; i < 4; ++i) {
+        Vulcan121::fadeOutMap(map, (energy * 0.55) + 0.25);
-            auto avg = fftData[i];
+        m_angle += energy;
-            if (avg > val)
+        rgb nColor = Color::Generator::rgbFromHSV({ m_angle, 1.0, 1.0 });
-                val = avg;
+        if (m_angle > 360) m_angle -= 360;
-        }
+        auto times = std::lround(energy * 4.5);
-        val = VUtils::Math::clamp(val, 1,255);
+        auto factor = 1.0;
-        if (deltaElapsed >= deltaNeeded) {
+        // search for a less < halfPeak
-            deltaElapsed -= deltaNeeded;
+        for (int i = 0; i < times; i++) {
-            if (emptyTicks && ticks < 10) {
+            for (int j = 0; j < 3; j++) {
-                ticks++;
+                auto key = static_cast<int>(m_random.getFast());
-            } else {
+                auto &item = map.key[key];
-                ticks = 0;
+                if (item.a < half) {
-                emptyTicks = false;
+                    item.r = int16_t(nColor.r * 255);
-                auto *kRow = keyboard->getRow(row);
+                    item.g = int16_t(nColor.g * 255);
-                columnCount += isReverse ? -1 : 1;
+                    item.b = int16_t(nColor.b * 255);
-                if (!isReverse && columnCount > kRow->count) {
+                    item.a = static_cast<int16_t>(val * factor);
-                    row++;
+                    factor -= 0.2;
-                    if (row >= keyboardData.num_rows) {
+                    break;
-                        emptyTicks = true;
-                        isReverse = true;
-                        row = keyboardData.num_rows-1;
-                    } else {
-                        columnCount = 0;
-                    }
-                } else if (isReverse && columnCount < 0) {
-                    row--;
-                    if (row < 0) {
-                        emptyTicks = true;
-                        isReverse = false;
-                        row = 0;
-                    } else {
-                        columnCount = kRow->count;
-                    }
                 }
             }
         }
-        for (auto &color : map->key)
+        keyboard->sendLedMap(map);
-            color.a = 0;
-        for (int i = 0; i <= row; ++i) {
-            auto *kRow = keyboard->getRow(i);
-            if (kRow) {
-                for (int j = 0; j < kRow->count; ++j) {
-                    auto intVal = (int16_t) val;
-                    if (i == row && j > columnCount)
-                        intVal = 0;
-                    map->key[kRow->index[j]].a = intVal;
-                }
-            }
-        }
-        keyboard->sendLedMap(map, false);
     }
     const char *Random::name() {
         return "Random";
     }
-
-    Random::~Random() {
-        delete map;
-    }
 }

src/VulcanoLE/Scripts/Spectral.cpp

@@ -0,0 +1,40 @@
+#include <VulcanoLE/Colors/ColorHelper.h>
+#include <VulcanoLE/Scripts/Spectral.h>
+
+namespace VIZ {
+
+Spectral::Spectral(AudioGrabber *pGrabber, Vulcan121 *pVulcan121)
+    : VIZ(pGrabber, pVulcan121) {
+
+  double ri = 0;
+  for (int i = 1; i < keyboardData.num_rows; ++i) {
+    auto *row = keyboard->getRow(i);
+    double r = ri / row->count;
+    for (int j = 0; j < row->count; j++) {
+      map.key[row->index[j]] = Color::Generator::rgbFromRatio(r, 255);
+    }
+    ri++;
+  }
+}
+
+void Spectral::onSetup() {
+  keyboard->sendToLEDs({0, 0, 0, 0});
+  grabber->requestMode = AudioGrabber::ReqMode::FFT;
+}
+
+void Spectral::onTick(float delta) {
+  auto *data = grabber->fft.getData();
+  auto *channel = data->leftChannel;
+  for (int i = 0; i < keyboardData.num_cols; ++i) {
+    auto *col = keyboard->getColumn(i);
+    auto ratio = (channel[i + 1] / 128.0 * -1 + 1) * keyboardData.num_rows;
+    for (int j = 0; j < col->count; j++) {
+      map.key[col->index[j]].a = j < ratio ? 0 : channel[j];
+    }
+  }
+  keyboard->sendLedMap(map);
+}
+
+const char *Spectral::name() { return m_name.c_str(); }
+
+} // namespace VIZ

src/VulcanoLE/Scripts/Spectrum.cpp

@@ -1,43 +1,40 @@
+#include <VUtils/Logging.h>
+#include <VUtils/Math.h>
+#include <VulcanoLE/Colors/ColorHelper.h>
 #include <VulcanoLE/Scripts/Spectrum.h>
 
 namespace VIZ {
-    Spectrum::Spectrum(AudioGrabber *pGrabber, Vulcan121 *pVulcan121) : VIZ(pGrabber, pVulcan121) {}
+Spectrum::Spectrum(AudioGrabber *pGrabber, Vulcan121 *pVulcan121)
+    : VIZ(pGrabber, pVulcan121) {}
 
-    void Spectrum::onSetup() {
+void Spectrum::onSetup() {
-        keyboard->sendToLEDs({ 0, 0, 0, 0 });
+  keyboard->sendToLEDs({0, 0, 0, 0});
-        grabber->requestMode = AudioGrabber::ReqMode::FFT;
+  grabber->requestMode = AudioGrabber::ReqMode::FFT;
-        usleep(100000);
-    }
-    void Spectrum::onTick(float delta) {
-        auto map = Vulcan121::createEmptyLEDMap();
-        auto data = grabber->fft.getData()->leftChannel;
-        // find largest bass ~43hz (44100 / FFT_SIZE) range
-        auto val = 0.0;
-        for (int i = 1; i < 4; ++i) {
-            if (data[i] > val) {
-                val = data[i];
-            }
-        }
-        double newVal = (val + lastVal) / 2.0;
-        lastVal = val;
-        int split = keyboardData.num_keys / 3;
-        int x = 0;
-        int colorInd = 0;
-        colors[0].a = newVal;
-        colors[1].a = newVal;
-        colors[2].a = newVal;
-        for (int key = 0; key < keyboardData.num_keys; ++key) {
-            map[0].key[key] = colors[colorInd];
-            x++;
-            if (x > split) {
-                colorInd++;
-                x = 0;
-            }
-        }
-        keyboard->sendLedMap(map, true);
-    }
-
-    const char *Spectrum::name() {
-        return m_name.c_str();
-    }
 }
+void Spectrum::onTick(float delta) {
+  led_map map{};
+  auto *data = grabber->fft.getData()->leftChannel;
+  auto val = 0.0;
+  for (int i = 0; i < 3; ++i) {
+    if (data[i] > val) {
+      val = data[i];
+    }
+  }
+  double normalized = val / 255.0;
+  if (m_angle > 360.0)
+    m_angle -= 360.0;
+  m_angle += (normalized * normalized * normalized) * 5.0;
+  rgb nColor =
+      Color::Generator::rgbFromHSV({m_angle, 1.0, normalized * normalized});
+  int16_t r = nColor.r * 255.0;
+  int16_t g = nColor.g * 255.0;
+  int16_t b = nColor.b * 255.0;
+  rgba color = {r, g, b, 255};
+  for (int key = 0; key < keyboardData.num_keys; ++key) {
+    map.key[key] = color;
+  }
+  keyboard->sendLedMap(map);
+}
+
+const char *Spectrum::name() { return m_name.c_str(); }
+} // namespace VIZ

src/VulcanoLE/Scripts/Strobo.cpp

@@ -0,0 +1,44 @@
+#include <VUtils/Random.h>
+#include <VulcanoLE/Colors/ColorHelper.h>
+#include <VulcanoLE/Scripts/Strobo.h>
+
+namespace VIZ {
+Strobo::Strobo(AudioGrabber *pGrabber, Vulcan121 *pVulcan121)
+    : VIZ(pGrabber, pVulcan121) {}
+
+void Strobo::onSetup() {
+  keyboard->sendToLEDs({0, 0, 0, 0});
+  grabber->requestMode = AudioGrabber::ReqMode::FFT;
+  int16_t r = (int16_t)grabber->env->getAsInt("strobo.color.r", 25);
+  int16_t g = (int16_t)grabber->env->getAsInt("strobo.color.g", 0);
+  int16_t b = (int16_t)grabber->env->getAsInt("strobo.color.b", 150);
+  m_color = {r, g, b, 255};
+  m_isStanding = false;
+}
+void Strobo::onTick(float delta) {
+  led_map map{};
+  auto bass = grabber->getBass();
+  auto val = bass / 255.0;
+  m_isStanding = bass < 5;
+
+  if (m_isStanding) {
+    m_color.a += 5;
+    if (m_color.a > 255) {
+      m_color.a = 255;
+    }
+  } else {
+    m_sinPoint += val * val;
+    if (m_sinPoint > 360)
+      m_sinPoint -= 360;
+    auto v = (std::sin(m_sinPoint) + 1) * 0.5;
+    m_color.a =  (v * v) * 255;
+  }
+
+  for (int key = 0; key < keyboardData.num_keys; ++key) {
+    map.key[key] = m_color;
+  }
+  keyboard->sendLedMap(map);
+}
+
+const char *Strobo::name() { return m_name.c_str(); }
+} // namespace VIZ

src/VulcanoLE/Scripts/TheUnknown.cpp

@@ -0,0 +1,41 @@
+#include <VulcanoLE/Scripts/TheUknown.h>
+#include <VUtils/SimplexNoise.h>
+
+namespace VIZ {
+    TheUnknown::TheUnknown(AudioGrabber *pGrabber, Vulcan121 *vulcan) : VIZ(pGrabber, vulcan) {
+        m_random.setDist(0, 128);
+        for (int i = 0; i < NUM_KEYS; i++) {
+            m_keyHeightMap[i] = std::abs(SimplexNoise::noise(i + 1.0f)) * 0.1;
+            m_keyOffset[i] = m_random.getFast();
+        }
+        m_random.setDist(0.005, 0.01);
+    }
+    void TheUnknown::onSetup() {
+        keyboard->sendToLEDs({ 0, 0, 0, 0 });
+        Vulcan121::setColor(map, { 202, 35, 13, 255 });
+        grabber->requestMode = AudioGrabber::ReqMode::PEAK;
+    }
+    void TheUnknown::onTick(float delta) {
+        auto loudness = grabber->getLoudness();
+        auto factor = (((loudness.r + loudness.l) / 2.0) * 0.9) + 0.05;
+        for (size_t i = 0; i < keyboardData.num_keys; i++) {
+            auto &color = map.key[i];
+            auto noise = SimplexNoise::noise(m_keyOffset[i]) * factor;
+            noise = std::abs(noise) + 0.02;
+            auto newAlpha = std::clamp((noise + m_keyHeightMap[i]) * 255, 0.0, 255.0);
+            color.a = (color.a + newAlpha) / 2;
+
+            auto offset = std::sin(m_angle) * m_random.getFast();
+            m_keyOffset[i] += (delta * (1.5 * factor)) + offset;
+            m_angle += 0.0005;
+            if (m_keyOffset[i] > 20000000)
+                m_keyOffset[i] = 0.0;
+            if (m_angle > 1.0)
+                m_angle -= 1;
+        }
+        keyboard->sendLedMap(map);
+    }
+    const char *TheUnknown::name() {
+        return "TheUnknown";
+    }
+}

src/VulcanoLE/Visual/VisPlugins.cpp

@@ -6,6 +6,10 @@
 #include <VulcanoLE/Scripts/RainbowLine.h>
 #include <VulcanoLE/Scripts/Random.h>
 #include <VulcanoLE/Scripts/RainbowMap.h>
+#include <VulcanoLE/Scripts/Spectral.h>
+#include <VulcanoLE/Scripts/BassHistory.h>
+#include <VulcanoLE/Scripts/TheUknown.h>
+#include <VulcanoLE/Scripts/Strobo.h>
 
 namespace VIZ {
     void VisPlugins::init(HIDHelper *hidHelper, AudioGrabber *audioGrabber) {
@@ -17,6 +21,10 @@ namespace VIZ {
         viz[3] = new RainbowLine(grabber, keyboard);
         viz[4] = new Random(grabber, keyboard);
         viz[5] = new RainbowMap(grabber, keyboard);
+        viz[6] = new Spectral(grabber, keyboard);
+        viz[7] = new BassHistory(grabber, keyboard);
+        viz[8] = new TheUnknown(grabber, keyboard);
+        viz[9] = new Strobo(grabber, keyboard);
         currentVis = viz[mode];
     }
 
@@ -33,8 +41,8 @@ namespace VIZ {
     void VisPlugins::onTick() {
         std::lock_guard<std::mutex> lockGuard(guard);
         auto stop = std::chrono::high_resolution_clock::now();
-        auto delta = std::chrono::duration_cast<micro>(stop - start).count();
+        auto delta = std::chrono::duration_cast<micro>(stop - start).count() / 1000000.0;
-        currentVis->onTick(delta);
+        currentVis->onTick((float) delta);
         frames++;
 #ifdef DEBUG
         auto fps = std::chrono::duration_cast<ms>(stop - frameStart).count();
@@ -44,7 +52,6 @@ namespace VIZ {
             frames = 0;
         }
 #endif
-        // DBG("Time Needed %f ms", delta / 1000)
         start = stop;
     }