1 files changed, 43 insertions, 0 deletions
diff --git a/src/DspTempo2.h b/src/DspTempo2.h
new file mode 100644
index 0000000..faf066d
--- /dev/null
+++ b/src/DspTempo2.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "DspBase.h"
+
+#include <RubberBandStretcher.h>
+
+namespace SaneAudioRenderer
+{
+    class DspTempo2 final
+        : public DspBase
+    {
+    public:
+
+        DspTempo2() = default;
+        DspTempo2(const DspTempo2&) = delete;
+        DspTempo2& operator=(const DspTempo2&) = delete;
+
+        void Initialize(double tempo, uint32_t rate, uint32_t channels);
+
+        std::wstring Name() override { return L"Tempo"; }
+
+        bool Active() override;
+
+        void Process(DspChunk& chunk) override;
+        void Finish(DspChunk& chunk) override;
+
+    private:
+
+        using DeinterleavedData = std::array<float*, 18>;
+
+        DeinterleavedData MarkData(DspChunk& chunk);
+        DeinterleavedData Deinterleave(DspChunk& chunk);
+        void Interleave(DspChunk& chunk);
+
+        std::unique_ptr<RubberBand::RubberBandStretcher> m_stretcher;
+
+        bool m_active = false;
+        bool m_finish = false;
+
+        uint32_t m_rate = 0;
+        uint32_t m_channels = 0;
+    };
+}