From c31ca6f60e1b7b088973779d0264bef1f5142494 Mon Sep 17 00:00:00 2001
From: csrichter <csrichter@hotmail.de>
Date: Thu, 27 Apr 2017 16:38:47 +0200
Subject: [PATCH] added clockslip correction (untested)

---
 lib/rds_decoder_redsea_impl.cc | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/lib/rds_decoder_redsea_impl.cc b/lib/rds_decoder_redsea_impl.cc
index 3493b93..e6d0179 100644
--- a/lib/rds_decoder_redsea_impl.cc
+++ b/lib/rds_decoder_redsea_impl.cc
@@ -306,23 +306,14 @@ int rds_decoder_redsea_impl::work (int noutput_items,
                                                     if (num_diff_bits<2){
                                                     dout << "clockslip detection (forward,skipped one):"<<std::endl;
                                                     dout << "dataword:"<<std::bitset<16>(dataword)<<"\tlast_pi:"<<std::bitset<16>(last_pi)<<std::endl;
+                                                    i--;
                                                     }
                                                     if (num_diff_bits2<2){
                                                     dout << "clockslip detection (backward,repeated one):"<<std::endl;
                                                     dout << "dataword:"<<std::bitset<16>(dataword)<<"\tlast_pi:"<<std::bitset<16>(last_pi)<<std::endl;
+                                                    i++;
                                                     }    
-                                                    diff=dataword^(last_pi>>2);
-                                                    diff2=(dataword>>2)^(last_pi);
-                                                    num_diff_bits = std::bitset<16>(diff).count();
-                                                    num_diff_bits2 = std::bitset<16>(diff2).count();
-                                                    if (num_diff_bits<2){
-                                                    dout << "clockslip detection (forward,skipped two):"<<std::endl;
-                                                    dout << "dataword:"<<std::bitset<16>(dataword)<<"\tlast_pi:"<<std::bitset<16>(last_pi)<<std::endl;
-                                                    }
-                                                    if (num_diff_bits2<2){
-                                                    dout << "clockslip detection (backward,repeated two):"<<std::endl;
-                                                    dout << "dataword:"<<std::bitset<16>(dataword)<<"\tlast_pi:"<<std::bitset<16>(last_pi)<<std::endl;
-                                                    }                                                        
+                                                 
                                                   }
                                                   //try correcting:
                                                   uint32_t corrected_block= correctBurstErrors(reg,expected_offset_char[block_number]);
@@ -382,9 +373,9 @@ int rds_decoder_redsea_impl::work (int noutput_items,
                                         block_number=(block_number+1) % 4;
                                         blocks_counter++;
 /* 1187.5 bps / 104 bits = 11.4 groups/sec, or 45.7 blocks/sec */
-                                        if (blocks_counter==40) {//reduced from 50
+                                        if (blocks_counter==50) {//reduced from 50
                                                 last_wrong_blocks_counter=wrong_blocks_counter;
-                                                if (wrong_blocks_counter>28) {//reduced from 35
+                                                if (wrong_blocks_counter>35) {//reduced from 35
                                                         lout << "@@@@@ Lost Sync (Got " << wrong_blocks_counter
                                                                 << " bad blocks on " << blocks_counter
                                                                 << " total)" << std::endl;