X-Git-Url: https://code.octet-stream.net/m17rt/blobdiff_plain/2798b7a8f62b73aa2a88d4b34e861debd6462015..1a444762d8fd7d48e4f56a87c6bd77f837522d5d:/m17core/src/decode.rs?ds=sidebyside

diff --git a/m17core/src/decode.rs b/m17core/src/decode.rs
index 6c8e02b..911d673 100755
--- a/m17core/src/decode.rs
+++ b/m17core/src/decode.rs
@@ -3,8 +3,8 @@ use crate::{
     fec::{self, p_1, p_2, p_3},
     interleave::interleave,
     protocol::{
-        LsfFrame, PacketFrame, PacketFrameCounter, StreamFrame, BERT_SYNC, LSF_SYNC, PACKET_SYNC,
-        STREAM_SYNC,
+        LsfFrame, PacketFrame, PacketFrameCounter, StreamFrame, BERT_SYNC, END_OF_TRANSMISSION,
+        LSF_SYNC, PACKET_SYNC, PREAMBLE, STREAM_SYNC,
     },
     random::random_xor,
 };
@@ -33,6 +33,8 @@ pub(crate) enum SyncBurst {
     Bert,
     Stream,
     Packet,
+    Preamble,
+    EndOfTransmission,
 }
 
 impl SyncBurst {
@@ -42,6 +44,8 @@ impl SyncBurst {
             Self::Bert => BERT_SYNC,
             Self::Stream => STREAM_SYNC,
             Self::Packet => PACKET_SYNC,
+            Self::Preamble => PREAMBLE,
+            Self::EndOfTransmission => END_OF_TRANSMISSION,
         }
     }
 }
@@ -54,8 +58,8 @@ pub(crate) fn sync_burst_correlation(target: [i8; 8], samples: &[f32]) -> (f32,
     let mut pos_max: f32 = f32::MIN;
     let mut neg_max: f32 = f32::MAX;
     for i in 0..8 {
-        pos_max = pos_max.max(samples[i * 10]);
-        neg_max = neg_max.min(samples[i * 10]);
+        pos_max = pos_max.max(samples[i]);
+        neg_max = neg_max.min(samples[i]);
     }
     let gain = (pos_max - neg_max) / 2.0;
     let shift = pos_max + neg_max;
@@ -65,7 +69,7 @@ pub(crate) fn sync_burst_correlation(target: [i8; 8], samples: &[f32]) -> (f32,
 
     let mut diff = 0.0;
     for i in 0..8 {
-        let sym_diff = (((samples[i * 10] - shift) / gain) - target[i] as f32).abs();
+        let sym_diff = (((samples[i] - shift) / gain) - target[i] as f32).abs();
         if sym_diff > SYNC_BIT_THRESHOLD {
             return (f32::MAX, gain, shift);
         }