From 9ae1cbddbc47a96a202507cce040a71f2f26db22 Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Fri, 11 Jan 2019 17:13:28 +0000
Subject: [PATCH] -add feeding buffer for PocSAC-decoder

git-svn-id: http://moon:8086/svn/software/trunk/projects/GnuRadio@409 b431acfa-c32f-4a4a-93f1-934dc6c82436
---
 gr-jay/lib/preamble_sync_impl.cc | 13 ++++++++++++-
 gr-jay/lib/preamble_sync_impl.h  |  2 ++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/gr-jay/lib/preamble_sync_impl.cc b/gr-jay/lib/preamble_sync_impl.cc
index 84bafcc..a2e7163 100644
--- a/gr-jay/lib/preamble_sync_impl.cc
+++ b/gr-jay/lib/preamble_sync_impl.cc
@@ -48,6 +48,7 @@ preamble_sync_impl::preamble_sync_impl()
 , m_wordCount(0)
 , m_wordSize(1)
 , m_dataCount(0)
+, bufferWi(0)
 {
 }
 
@@ -203,8 +204,18 @@ int preamble_sync_impl::general_work (int noutput_items, gr_vector_int &ninput_i
 	// each input stream.
 	consume_each (i);
 
+	memcpy(&buffer[bufferWi], out, j);
+	
+	bufferWi += j;
+	
+	if (bufferWi >= sizeof(buffer)/2)
+	{
+		size_t numProcessed = dec.process(buffer, bufferWi);
+		bufferWi -= numProcessed;
+		memcpy(buffer, &buffer[numProcessed], bufferWi);
+	}
+	
 	// Tell runtime system how many output items we produced.
-	dec.process(out, j);
 	return j;
 
 }
diff --git a/gr-jay/lib/preamble_sync_impl.h b/gr-jay/lib/preamble_sync_impl.h
index a59b647..f1e93ba 100644
--- a/gr-jay/lib/preamble_sync_impl.h
+++ b/gr-jay/lib/preamble_sync_impl.h
@@ -52,6 +52,8 @@ class preamble_sync_impl : public preamble_sync
 	size_t m_wordCount;
 	size_t m_wordSize;
 	size_t m_dataCount;
+	uint8_t buffer[256];
+	size_t bufferWi;
 	
 	PocsagDecoder dec;
 	public: