[fix](trx-frontend): narrow weak WFM to 60 kHz

src/decoders/trx-wefax/src/image.rs

@@ -274,7 +274,8 @@ mod tests {
 
         // Pseudo-random noise vs gradient — correlation should be low.
         let noise: Vec<u8> = (0..256)
-            .map(|i| ((i * 1103515245 + 12345) as u32 >> 8 & 0xff) as u8)
+            .map(|i| (i as u32).wrapping_mul(1_103_515_245).wrapping_add(12_345))
+            .map(|value| ((value >> 8) & 0xff) as u8)
             .collect();
         let r = asm.correlation_with_last(&noise).expect("r");
         assert!(

src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js

@@ -4268,7 +4268,7 @@ const MODE_BW_DEFAULTS = {
   FM:     [12_500, 2_500, 25_000, 500],
   AIS:    [25_000, 12_500, 50_000, 500],
   VDES:   [100_000, 25_000, 200_000, 1_000],
-  WFM:    [180_000, 50_000,300_000,5_000],
+  WFM:    [180_000, 60_000,300_000,5_000],
   DIG:    [3_000,  300,   6_000,  100],
   PKT:    [25_000, 300,  50_000,  500],
 };
@@ -4348,64 +4348,93 @@ async function applyBandwidthFromInput() {
   } catch (_) {}
 }
 
-function estimateBandwidthAroundPeak(data, centerHz) {
+function estimateOccupiedBandwidth(data, centerHz) {
   if (!data || !isBinsArray(data.bins) || data.bins.length < 3 || !Number.isFinite(centerHz)) {
     return null;
   }
 
   const bins = data.bins;
   const maxIdx = bins.length - 1;
+  const hzPerBin = data.sample_rate / maxIdx;
   const fullLoHz = data.center_hz - data.sample_rate / 2;
   const centerIdx = Math.max(
     1,
     Math.min(maxIdx - 1, Math.round(((centerHz - fullLoHz) / data.sample_rate) * maxIdx)),
   );
-  const searchRadius = Math.max(6, Math.min(120, Math.round(maxIdx * 0.03)));
+  const mode = (modeEl ? modeEl.value : "USB").toUpperCase();
-  const searchLo = Math.max(1, centerIdx - searchRadius);
+  const [defaultBw, minBw, maxBw, stepBw] = mwDefaultsForMode(mode);
-  const searchHi = Math.min(maxIdx - 1, centerIdx + searchRadius);
+  const oneSided = mode === "USB" || mode === "DIG" || mode === "CW"
-
+    ? 1
-  let peakIdx = centerIdx;
+    : mode === "LSB" || mode === "CWR" ? -1 : 0;
-  for (let i = searchLo; i <= searchHi; i++) {
+  const isWfm = mode === "WFM";
-    if (bins[i] > bins[peakIdx]) peakIdx = i;
-  }
 
+  // Reduce single-bin peaks and holes before finding occupied-channel edges.
+  // WFM needs a wider smoothing window because its energy is noise-like and
+  // spread across the entire channel rather than concentrated at a carrier.
+  const smoothRadius = isWfm ? 3 : 1;
+  const smoothed = bins.map((_, i) => {
+    let sum = 0;
+    let count = 0;
+    for (let j = Math.max(0, i - smoothRadius); j <= Math.min(maxIdx, i + smoothRadius); j++) {
+      sum += bins[j];
+      count += 1;
+    }
+    return sum / count;
+  });
   const sorted = [...bins].sort((a, b) => a - b);
   const noise = sorted[Math.floor(sorted.length * 0.2)];
-  const peak = bins[peakIdx];
+  const maxSpanBins = Math.max(2, Math.ceil(maxBw / hzPerBin));
-  const threshold = Math.max(noise + 4, peak - Math.max(8, (peak - noise) * 0.35));
+  const searchHalfBins = oneSided === 0 ? Math.ceil(maxSpanBins / 2) : maxSpanBins;
+  const searchLo = Math.max(1, centerIdx - (oneSided > 0 ? 2 : searchHalfBins));
+  const searchHi = Math.min(maxIdx - 1, centerIdx + (oneSided < 0 ? 2 : searchHalfBins));
+  let peak = -Infinity;
+  for (let i = searchLo; i <= searchHi; i++) peak = Math.max(peak, smoothed[i]);
+  const snr = peak - noise;
+  if (!Number.isFinite(snr) || snr < (isWfm ? 5 : 4)) return isWfm ? minBw : defaultBw;
 
-  let left = peakIdx;
+  // A threshold relative to the noise floor finds occupied bandwidth much
-  let right = peakIdx;
+  // more reliably than one relative to the peak.  The latter fails for WFM,
-  let belowCount = 0;
+  // whose multiplex spectrum has peaks, notches, and no narrow centre carrier.
-  for (let i = peakIdx; i > 1; i--) {
+  const threshold = noise + Math.max(3, Math.min(isWfm ? 6 : 10, snr * (isWfm ? 0.18 : 0.28)));
-    if (bins[i] < threshold) belowCount += 1;
+  const allowedGap = Math.max(isWfm ? 4 : 2, Math.ceil((isWfm ? 12_000 : stepBw) / hzPerBin));
-    else belowCount = 0;
+
-    if (belowCount >= 2) break;
+  function occupiedExtent(direction, limitBins) {
-    left = i;
+    let lastOccupied = centerIdx;
+    let gap = 0;
+    for (let n = 0; n <= limitBins; n++) {
+      const i = centerIdx + direction * n;
+      if (i <= 0 || i >= maxIdx) break;
+      if (smoothed[i] >= threshold) {
+        lastOccupied = i;
+        gap = 0;
+      } else if (++gap > allowedGap) {
+        break;
+      }
+    }
+    return Math.abs(lastOccupied - centerIdx) * hzPerBin;
   }
 
-  belowCount = 0;
+  let rawBw;
-  for (let i = peakIdx; i < maxIdx - 1; i++) {
+  if (oneSided !== 0) {
-    if (bins[i] < threshold) belowCount += 1;
+    rawBw = occupiedExtent(oneSided, maxSpanBins);
-    else belowCount = 0;
+  } else {
-    if (belowCount >= 2) break;
+    const leftHz = occupiedExtent(-1, searchHalfBins);
-    right = i;
+    const rightHz = occupiedExtent(1, searchHalfBins);
+    // A symmetric RF filter must contain the larger of the two sidebands.
+    rawBw = 2 * Math.max(leftHz, rightHz);
   }
 
-  const shoulderPad = Math.max(1, Math.round((right - left) * 0.08));
+  // Add a transition-band margin.  Weak WFM deliberately falls back to the
-  left = Math.max(0, left - shoulderPad);
+  // 60 kHz mode floor above: a narrower filter trades stereo/RDS content for
-  right = Math.min(maxIdx, right + shoulderPad);
+  // a useful improvement in intelligibility when the signal is very poor.
-
+  rawBw *= isWfm ? 1.08 : 1.12;
-  const hzPerBin = data.sample_rate / maxIdx;
-  const rawBw = Math.max(hzPerBin, (right - left) * hzPerBin);
-  const [, minBw, maxBw, stepBw] = mwDefaultsForMode(modeEl ? modeEl.value : "USB");
   const clamped = Math.max(minBw, Math.min(maxBw, rawBw));
   return Math.max(stepBw, Math.round(clamped / stepBw) * stepBw);
 }
 
 async function applyAutoBandwidth() {
   if (!lastSpectrumData || lastFreqHz == null) return;
-  const estimated = estimateBandwidthAroundPeak(lastSpectrumData, lastFreqHz);
+  const estimated = estimateOccupiedBandwidth(lastSpectrumData, lastFreqHz);
   if (!Number.isFinite(estimated) || estimated <= 0) {
     syncBandwidthInput(currentBandwidthHz);
     return;

src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html

@@ -1641,29 +1641,56 @@ SPDX-License-Identifier: GPL-2.0-or-later
     'settings': ['/vchan.js', '/scheduler.js']
   };
   var loaded = new Set();
-  function loadPlugins(tab) {
+  var loading = new Map();
-    var scripts = pluginScripts[tab];
+
-    if (!scripts) return;
+  function loadScript(src) {
-    scripts.forEach(function(src) {
+    if (loaded.has(src)) return Promise.resolve();
-      if (loaded.has(src)) return;
+    if (loading.has(src)) return loading.get(src);
-      loaded.add(src);
+
+    var request = new Promise(function(resolve, reject) {
       var s = document.createElement('script');
       s.src = src;
-      s.defer = true;
+      s.onload = function() {
+        loaded.add(src);
+        loading.delete(src);
+        resolve();
+      };
+      s.onerror = function() {
+        loading.delete(src);
+        reject(new Error('Failed to load plugin script: ' + src));
+      };
       document.body.appendChild(s);
     });
+    loading.set(src, request);
+    return request;
+  }
+
+  function loadPlugins(tab) {
+    var scripts = pluginScripts[tab];
+    if (!scripts) return Promise.resolve();
+    return scripts.reduce(function(sequence, src) {
+      return sequence.then(function() { return loadScript(src); });
+    }, Promise.resolve());
+  }
+
+  function requestPlugins(tab) {
+    return loadPlugins(tab).catch(function(err) {
+      console.error(err);
+    });
   }
   // Eager plugin loading is triggered by app.js (after window.trx is set up)
   // via window.loadEagerPlugins().  Dynamic scripts are effectively async, so
   // loading them before app.js would cause map-core.js to crash when
   // window.trx is not yet defined.
   window.loadEagerPlugins = function() {
-    ['digital-modes', 'map-data', 'bookmarks', 'settings'].forEach(loadPlugins);
+    return Promise.all(
+      ['digital-modes', 'map-data', 'bookmarks', 'settings'].map(requestPlugins)
+    );
   };
   // Load others on tab switch
   document.addEventListener('click', function(e) {
     var tab = e.target.closest('[data-tab]');
-    if (tab) loadPlugins(tab.dataset.tab);
+    if (tab) requestPlugins(tab.dataset.tab);
   });
   window.loadPluginsForTab = loadPlugins;
 })();

src/trx-server/src/decoder_history.rs

@@ -465,8 +465,25 @@ impl DecoderHistories {
     /// entries across all decoders, used for pre-allocating the replay blob.
     ///
     /// Uses an `AtomicUsize` counter maintained by record/prune/clear methods,
-    /// avoiding 9 separate mutex acquisitions.
+    /// avoiding 11 separate mutex acquisitions.
     pub fn estimated_total_count(&self) -> usize {
         self.total_count.load(Ordering::Relaxed)
     }
+
+    /// Rebuild the aggregate count after bulk restoration bypasses the normal
+    /// record methods.
+    pub(crate) fn recalculate_total_count(&self) {
+        let total = lock_or_recover(&self.ais, "ais_history").len()
+            + lock_or_recover(&self.vdes, "vdes_history").len()
+            + lock_or_recover(&self.aprs, "aprs_history").len()
+            + lock_or_recover(&self.hf_aprs, "hf_aprs_history").len()
+            + lock_or_recover(&self.cw, "cw_history").len()
+            + lock_or_recover(&self.ft8, "ft8_history").len()
+            + lock_or_recover(&self.ft4, "ft4_history").len()
+            + lock_or_recover(&self.ft2, "ft2_history").len()
+            + lock_or_recover(&self.wspr, "wspr_history").len()
+            + lock_or_recover(&self.lrpt, "lrpt_history").len()
+            + lock_or_recover(&self.wefax, "wefax_history").len();
+        self.total_count.store(total, Ordering::Relaxed);
+    }
 }

src/trx-server/src/history_store.rs

@@ -19,7 +19,7 @@ use pickledb::{PickleDb, PickleDbDumpPolicy, SerializationMethod};
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 use trx_core::decode::{
-    AisMessage, AprsPacket, CwEvent, Ft8Message, VdesMessage, WefaxMessage, WsprMessage,
+    AisMessage, AprsPacket, CwEvent, Ft8Message, LrptImage, VdesMessage, WefaxMessage, WsprMessage,
 };
 
 use crate::audio::DecoderHistories;
@@ -118,6 +118,11 @@ pub fn load_all(db: &PickleDb, rig_id: &str, histories: &Arc<DecoderHistories>)
             h.push_back(e);
         }
     }
+    if let Ok(mut h) = histories.hf_aprs.lock() {
+        for e in load_key::<AprsPacket>(db, &k("hf_aprs")) {
+            h.push_back(e);
+        }
+    }
     if let Ok(mut h) = histories.cw.lock() {
         for e in load_key::<CwEvent>(db, &k("cw")) {
             h.push_back(e);
@@ -128,16 +133,32 @@ pub fn load_all(db: &PickleDb, rig_id: &str, histories: &Arc<DecoderHistories>)
             h.push_back(e);
         }
     }
+    if let Ok(mut h) = histories.ft4.lock() {
+        for e in load_key::<Ft8Message>(db, &k("ft4")) {
+            h.push_back(e);
+        }
+    }
+    if let Ok(mut h) = histories.ft2.lock() {
+        for e in load_key::<Ft8Message>(db, &k("ft2")) {
+            h.push_back(e);
+        }
+    }
     if let Ok(mut h) = histories.wspr.lock() {
         for e in load_key::<WsprMessage>(db, &k("wspr")) {
             h.push_back(e);
         }
     }
+    if let Ok(mut h) = histories.lrpt.lock() {
+        for e in load_key::<LrptImage>(db, &k("lrpt")) {
+            h.push_back(e);
+        }
+    }
     if let Ok(mut h) = histories.wefax.lock() {
         for e in load_key::<WefaxMessage>(db, &k("wefax")) {
             h.push_back(e);
         }
     }
+    histories.recalculate_total_count();
 }
 
 /// Flush `histories` to the database under `rig_id`-prefixed keys and sync.
@@ -162,6 +183,11 @@ pub fn flush_all(db: &mut PickleDb, rig_id: &str, histories: &Arc<DecoderHistori
         drop(h);
         save_key(db, &k("aprs"), &snapshot);
     }
+    if let Ok(h) = histories.hf_aprs.lock() {
+        let snapshot = h.clone();
+        drop(h);
+        save_key(db, &k("hf_aprs"), &snapshot);
+    }
     if let Ok(h) = histories.cw.lock() {
         let snapshot = h.clone();
         drop(h);
@@ -172,11 +198,26 @@ pub fn flush_all(db: &mut PickleDb, rig_id: &str, histories: &Arc<DecoderHistori
         drop(h);
         save_key(db, &k("ft8"), &snapshot);
     }
+    if let Ok(h) = histories.ft4.lock() {
+        let snapshot = h.clone();
+        drop(h);
+        save_key(db, &k("ft4"), &snapshot);
+    }
+    if let Ok(h) = histories.ft2.lock() {
+        let snapshot = h.clone();
+        drop(h);
+        save_key(db, &k("ft2"), &snapshot);
+    }
     if let Ok(h) = histories.wspr.lock() {
         let snapshot = h.clone();
         drop(h);
         save_key(db, &k("wspr"), &snapshot);
     }
+    if let Ok(h) = histories.lrpt.lock() {
+        let snapshot = h.clone();
+        drop(h);
+        save_key(db, &k("lrpt"), &snapshot);
+    }
     if let Ok(h) = histories.wefax.lock() {
         let snapshot = h.clone();
         drop(h);
@@ -185,20 +226,38 @@ pub fn flush_all(db: &mut PickleDb, rig_id: &str, histories: &Arc<DecoderHistori
     let _ = db.dump();
 }
 
+fn flush_all_rigs(db: &Mutex<PickleDb>, rig_histories: &[(String, Arc<DecoderHistories>)]) {
+    let Ok(mut guard) = db.lock() else {
+        tracing::warn!("history database mutex poisoned; skipping periodic flush");
+        return;
+    };
+    for (rig_id, histories) in rig_histories {
+        flush_all(&mut guard, rig_id, histories);
+    }
+}
+
 /// Spawn a Tokio task that flushes all rigs' histories to disk every 60 seconds.
+///
+/// Snapshot cloning, JSON serialization, and disk I/O run on Tokio's blocking
+/// pool so a large history database cannot stall an async runtime worker.
 pub fn spawn_flush_task(
     db: Arc<Mutex<PickleDb>>,
     rig_histories: Vec<(String, Arc<DecoderHistories>)>,
 ) {
     tokio::spawn(async move {
+        let rig_histories = Arc::new(rig_histories);
         let mut interval = tokio::time::interval(Duration::from_secs(60));
         interval.tick().await; // consume the immediate first tick
         loop {
             interval.tick().await;
-            if let Ok(mut guard) = db.lock() {
+            let db = Arc::clone(&db);
-                for (rig_id, histories) in &rig_histories {
+            let rig_histories = Arc::clone(&rig_histories);
-                    flush_all(&mut guard, rig_id, histories);
+            if let Err(err) = tokio::task::spawn_blocking(move || {
-                }
+                flush_all_rigs(&db, rig_histories.as_slice());
+            })
+            .await
+            {
+                tracing::warn!(error = %err, "history flush worker failed");
             }
         }
     });
@@ -302,4 +361,79 @@ mod tests {
         let _ = std::fs::remove_file(&db_file);
         let _ = std::fs::remove_dir(&dir);
     }
+
+    #[test]
+    fn flush_and_load_all_restores_previously_omitted_histories() {
+        let db_file = std::env::temp_dir().join(format!(
+            "trx_history_all_{}_{}.db",
+            std::process::id(),
+            now_unix_ms()
+        ));
+        let mut db = PickleDb::new(
+            &db_file,
+            PickleDbDumpPolicy::DumpUponRequest,
+            SerializationMethod::Json,
+        );
+        let source = DecoderHistories::new();
+        let now = Instant::now();
+
+        source.hf_aprs.lock().unwrap().push_back((
+            now,
+            AprsPacket {
+                rig_id: Some("rig-a".into()),
+                ts_ms: Some(now_unix_ms()),
+                src_call: "TEST".into(),
+                dest_call: "APRS".into(),
+                path: String::new(),
+                info: "history".into(),
+                info_bytes: Vec::new(),
+                packet_type: "position".into(),
+                crc_ok: true,
+                lat: None,
+                lon: None,
+                symbol_table: None,
+                symbol_code: None,
+            },
+        ));
+        for (queue, mode) in [(&source.ft4, "FT4"), (&source.ft2, "FT2")] {
+            queue.lock().unwrap().push_back((
+                now,
+                Ft8Message {
+                    rig_id: Some("rig-a".into()),
+                    ts_ms: now_unix_ms(),
+                    snr_db: -10.0,
+                    dt_s: 0.1,
+                    freq_hz: 1_000.0,
+                    message: mode.into(),
+                },
+            ));
+        }
+        source.lrpt.lock().unwrap().push_back((
+            now,
+            LrptImage {
+                rig_id: Some("rig-a".into()),
+                pass_start_ms: now_unix_ms(),
+                pass_end_ms: now_unix_ms(),
+                mcu_count: 1,
+                path: "/tmp/lrpt.png".into(),
+                ts_ms: Some(now_unix_ms()),
+                satellite: None,
+                channels: None,
+                geo_bounds: None,
+                ground_track: None,
+            },
+        ));
+
+        flush_all(&mut db, "rig-a", &source);
+        let restored = DecoderHistories::new();
+        load_all(&db, "rig-a", &restored);
+
+        assert_eq!(restored.hf_aprs.lock().unwrap().len(), 1);
+        assert_eq!(restored.ft4.lock().unwrap().len(), 1);
+        assert_eq!(restored.ft2.lock().unwrap().len(), 1);
+        assert_eq!(restored.lrpt.lock().unwrap().len(), 1);
+        assert_eq!(restored.estimated_total_count(), 4);
+
+        let _ = std::fs::remove_file(db_file);
+    }
 }

src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp/filter.rs

@@ -251,9 +251,9 @@ fn mul_freq_domain(buf: &mut [FftComplex<f32>], h_freq: &[FftComplex<f32>], scal
         unsafe {
             mul_freq_domain_neon(buf, h_freq, scale);
         }
-        return;
     }
 
+    #[cfg(not(target_arch = "aarch64"))]
     mul_freq_domain_scalar(buf, h_freq, scale);
 }