From dd51ba396babac675846f14d9159e32c1c864cb8 Mon Sep 17 00:00:00 2001
From: Raulshc <33253777+Raulshc@users.noreply.github.com>
Date: Sun, 20 May 2018 17:21:50 +0200
Subject: Common: Implement discrete Hilbert transform

---
 common/alcomplex.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'common/alcomplex.h')

diff --git a/common/alcomplex.h b/common/alcomplex.h
index cf4683fa..cfd164b6 100644
--- a/common/alcomplex.h
+++ b/common/alcomplex.h
@@ -55,6 +55,15 @@ inline ALcomplex complex_mult(ALcomplex a, ALcomplex b)
  */
 void complex_fft(ALcomplex *FFTBuffer, ALsizei FFTSize, ALdouble Sign);
 
+/**
+ *Calculate the complex helical sequence (or discrete-time analytical signal)
+ *of the given input using the discrete Hilbert transform (In-place algorithm).
+ *Fills InOutBuffer[0...size-1] with the discrete-time analytical signal stored 
+ *in InOutBuffer[0...size-1]. InOutBuffer is an array of complex numbers, 
+ *size MUST BE power of two.
+ */
+void hilbert(ALsizei size, ALcomplex *InOutBuffer );
+
 #ifdef __cplusplus
 } // extern "C"
 #endif
-- 
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