new dsp

core/src/dsp/audio.h

@@ -0,0 +1,92 @@
+#pragma once
+#include <dsp/block.h>
+#include <spdlog/spdlog.h>
+
+namespace dsp {
+    class MonoToStereo : public generic_block<MonoToStereo> {
+    public:
+        MonoToStereo() {}
+
+        MonoToStereo(stream<float>* in) { init(in); }
+
+        ~MonoToStereo() { generic_block<MonoToStereo>::stop(); }
+
+        void init(stream<float>* in) {
+            _in = in;
+            generic_block<MonoToStereo>::registerInput(_in);
+            generic_block<MonoToStereo>::registerOutput(&out);
+        }
+
+        void setInput(stream<float>* in) {
+            std::lock_guard<std::mutex> lck(generic_block<MonoToStereo>::ctrlMtx);
+            generic_block<MonoToStereo>::tempStop();
+            _in = in;
+            generic_block<MonoToStereo>::tempStart();
+        }
+
+        int run() {
+            count = _in->read();
+            if (count < 0) { return -1; }
+
+            if (out.aquire() < 0) { return -1; }
+            for (int i = 0; i < count; i++) {
+                out.data[i].l = _in->data[i];
+                out.data[i].r = _in->data[i];
+            }
+
+            _in->flush();
+            out.write(count);
+            return count;
+        }
+
+        stream<stereo_t> out;
+
+    private:
+        int count;
+        stream<float>* _in;
+
+    };
+
+    class StereoToMono : public generic_block<StereoToMono> {
+    public:
+        StereoToMono() {}
+
+        StereoToMono(stream<stereo_t>* in) { init(in); }
+
+        ~StereoToMono() { generic_block<StereoToMono>::stop(); }
+
+        void init(stream<stereo_t>* in) {
+            _in = in;
+            generic_block<StereoToMono>::registerInput(_in);
+            generic_block<StereoToMono>::registerOutput(&out);
+        }
+
+        void setInput(stream<stereo_t>* in) {
+            std::lock_guard<std::mutex> lck(generic_block<StereoToMono>::ctrlMtx);
+            generic_block<StereoToMono>::tempStop();
+            _in = in;
+            generic_block<StereoToMono>::tempStart();
+        }
+
+        int run() {
+            count = _in->read();
+            if (count < 0) { return -1; }
+
+            if (out.aquire() < 0) { return -1; }
+            for (int i = 0; i < count; i++) {
+                out.data[i] = (_in->data[i].l + _in->data[i].r) / 2.0f;
+            }
+
+            _in->flush();
+            out.write(count);
+            return count;
+        }
+
+        stream<float> out;
+
+    private:
+        int count;
+        stream<stereo_t>* _in;
+
+    };
+}