1 files changed, 46 insertions, 0 deletions
diff --git a/src/dsd2pcm/noiseshape.hpp b/src/dsd2pcm/noiseshape.hpp
new file mode 100644
index 00000000..726272f9
--- /dev/null
+++ b/src/dsd2pcm/noiseshape.hpp
@@ -0,0 +1,46 @@
+#ifndef NOISE_SHAPE_HXX_INCLUDED
+#define NOISE_SHAPE_HXX_INCLUDED
+
+#include <stdexcept>
+#include "noiseshape.h"
+
+/**
+ * C++ wrapper for the noiseshape C library
+ */
+
+class noise_shaper
+{
+	noise_shape_ctx ctx;
+public:
+	noise_shaper(int sos_count, const float *bbaa)
+	{
+		if (noise_shape_init(&ctx,sos_count,bbaa))
+			throw std::runtime_error("noise shaper initialization failed");
+	}
+
+	noise_shaper(noise_shaper const& x)
+	{
+		if (noise_shape_clone(&x.ctx,&ctx))
+			throw std::runtime_error("noise shaper initialization failed");
+	}
+
+	~noise_shaper()
+	{ noise_shape_destroy(&ctx); }
+
+	noise_shaper& operator=(noise_shaper const& x)
+	{
+		if (this != &x) {
+			noise_shape_destroy(&ctx);
+			if (noise_shape_clone(&x.ctx,&ctx))
+				throw std::runtime_error("noise shaper initialization failed");
+		}
+		return *this;
+	}
+
+	float get() { return noise_shape_get(&ctx); }
+
+	void update(float error) { noise_shape_update(&ctx,error); }
+};
+
+#endif /* NOISE_SHAPE_HXX_INCLUDED */
+