move to new cspot

components/spotify/cspot/bell/main/audio-dsp/include/Gain.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <cmath>
+#include <mutex>
+#include <iostream>
+
+#include "AudioTransform.h"
+
+namespace bell
+{
+    class Gain : public bell::AudioTransform
+    {
+    private:
+    float gainFactor = 1.0f;
+
+    std::vector<int> channels;
+
+    public:
+        Gain();
+        ~Gain() {};
+        
+        float gainDb = 0.0;
+        
+        void configure(std::vector<int> channels, float gainDB);
+
+        std::unique_ptr<StreamInfo> process(std::unique_ptr<StreamInfo> data) override;
+
+        void reconfigure() override {
+            std::scoped_lock lock(this->accessMutex);
+            float gain = config->getFloat("gain");
+            this->channels = config->getChannels();
+
+            if (gainDb == gain) {
+                return;
+            }
+
+            this->configure(channels, gain);
+        }
+    };
+}