From f34c5f13316b6b75533e23430c8e3640ee5c360d Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Fri, 17 Jun 2022 07:50:51 +0000
Subject: [PATCH] - Farrow is a Processor::Block

git-svn-id: http://moon:8086/svn/software/trunk/libsrc/cpp@1012 b431acfa-c32f-4a4a-93f1-934dc6c82436
---
 radio/interpolation/Farrow.hpp | 57 +++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 28 deletions(-)

diff --git a/radio/interpolation/Farrow.hpp b/radio/interpolation/Farrow.hpp
index 6943d61..c5489ca 100644
--- a/radio/interpolation/Farrow.hpp
+++ b/radio/interpolation/Farrow.hpp
@@ -6,6 +6,7 @@
 #include <cpp/radio/Vector.hpp>
 #include <cpp/radio/FirComplex.hpp>
 #include <cpp/radio/processor/src/Buffer.hpp>
+#include <cpp/radio/processor/src/Block.hpp>
 #include <cpp/radio/interpolation/TimingGenerator.hpp>
 
 #include <iostream>
@@ -22,7 +23,7 @@ namespace Interpolation
 // [unknown date], Fred Harris, Signal Processing ChairCommunication Systems and Signal Processing Institute
 // College of Engineering, San Diego State University, San Diego, CA 92182-0190 USA
 // --------------------------------------------------------------
-class Farrow
+class Farrow : public Processor::Block
 {
 	typedef struct _ml_farrow_coef_hdr_t
 	{
@@ -31,8 +32,10 @@ class Farrow
 	} ml_farrow_coef_hdr_t;
 	
 public:
-	Farrow(uint32_t M=0, uint32_t N=0)
-	: m_fir(N)
+	Farrow(TimingGenerator &timingGenerator, uint32_t M=0, uint32_t N=0)
+	: Processor::Block(1, 1)
+	, m_timingGenerator(timingGenerator)
+	, m_fir(N)
 	, m_M(M)
 	, m_N(N)
 	, m_w(0)
@@ -40,8 +43,7 @@ public:
 	, m_coeff(N, M)
 	, m_b(M)
 	, m_h(M)
-	, m_bufferIn(8*1024)
-	, m_bufferOut(8*1024)
+	, m_buf_in(8*1024)
 	{
 		init(M, N);
 	}
@@ -59,35 +61,38 @@ public:
 		m_coeff.resize(N, M);
 		m_b.resize(M);
 		m_h.resize(M);
-//		m_bufferIn.fill(ComplexScalar(0,0));
-//		m_bufferOut.fill(ComplexScalar(0,0));
+//		m_buf_in.fill(ComplexScalar(0,0));
 	}
 
 	size_t feed(CVec const &x, uint32_t size=1)
 	{
-		return m_bufferIn.write(x.data(), size);
+		return m_buf_in.write(x.data(), size);
 	}
 
 	size_t feed(ComplexScalar const *x, uint32_t size=1)
 	{
-		return m_bufferIn.write(x, size);
+		return m_buf_in.write(x, size);
 	}
 	
-	void process(TimingGenerator &timingGenerator)
+	void process()
 	{
-		while(true)
-		{
-			size_t adv = timingGenerator.getAdv();
-			radio_float_t mu = timingGenerator.getMu();
+		// Get output buffer
+		auto buf_out = dynamic_cast<Processor::Buffer<ComplexScalar>*>(buffer_out());
 
-			if (m_bufferIn.len() < adv)
+		// Process input
+		while(buf_out->free())
+		{
+			size_t adv = m_timingGenerator.getAdv();
+			radio_float_t mu = m_timingGenerator.getMu();
+
+			if (m_buf_in.len() < adv)
 			{
 				break;
 			}
 
 			if (adv != 0)
 			{
-				m_fir.feed(m_bufferIn, adv);
+				m_fir.feed(m_buf_in, adv);
 				
 				// Partial filter responses
 				for (int i=0; i < m_M; i++)
@@ -95,12 +100,13 @@ public:
 					m_h[i] = m_fir.processReal(column(m_coeff, i));
 				}
 			}
+
 			// Combine
 			ComplexScalar yout = horner(mu);
-			m_bufferOut.write(&yout, 1);
-
-			timingGenerator.process(yout);
+			buf_out->write(&yout, 1);
 
+			// Process timing generator
+			m_timingGenerator.process(yout);
 		}
 	}
 
@@ -146,17 +152,13 @@ public:
 
 	}
 	
-	Processor::Buffer<ComplexScalar>& getInputBuffer()
+	Processor::IBuffer* buffer_in(size_t index=0) override
 	{
-		return m_bufferIn;
+		return &m_buf_in;
 	}
 
-	Processor::Buffer<ComplexScalar>& getOutputBuffer()
-	{
-		return m_bufferOut;
-	}
-	
 private:
+	TimingGenerator &m_timingGenerator;
 	FirComplex m_fir;
 	uint32_t m_M;
 	uint32_t m_N;
@@ -165,8 +167,7 @@ private:
 	RMat m_coeff;
 	CVec m_b;
 	CVec m_h;
-	Processor::Buffer<ComplexScalar> m_bufferIn;
-	Processor::Buffer<ComplexScalar> m_bufferOut;
+	Processor::Buffer<ComplexScalar> m_buf_in;
 
 	ComplexScalar horner(RealScalar mu)
 	{