add push() to ChannelHistory structs

examples_linux/ncurses/scanner_curses.cpp

@@ -46,6 +46,23 @@ struct ChannelHistory
 {
     unsigned int total = 0;  // the summary of signal counts for the channel
     bool history[CACHE_MAX]; // a cache of history for the channel
+
+    /**
+     * Push new scan result for a channel into the history.
+     * This function also increments the total signal count accordingly.
+     * @returns The count of cached signals found (including pushed result)
+     */
+    uint8_t push(bool value)
+    {
+        uint8_t sum = value;
+        total += value;
+        for (uint8_t i = 0; i < CACHE_MAX - 1; ++i) {
+            history[i] = history[i + 1];
+            sum += history[i];
+        }
+        history[CACHE_MAX - 1] = value;
+        return sum;
+    }
 };
 ChannelHistory stored[MAX_CHANNELS];
 
@@ -149,7 +166,7 @@ int main(int argc, char** argv)
                  bpsUnit);
 
         bool foundSignal = scanChannel(channel);
-        uint8_t cachedCount = historyPush(channel, foundSignal);
+        uint8_t cachedCount = stored[channel].push(foundSignal);
 
         // output the summary/snapshot for this channel
         if (stored[channel].total) {
@@ -313,19 +330,4 @@ void initBars()
     }
 }
 
-/**
- * Push new scan result for a channel into the history.
- * @returns The count of historic signals found (including pushed result)
- */
-uint8_t historyPush(uint8_t channel, bool value)
-{
-    uint8_t sum = 0;
-    for (uint8_t i = 0; i < CACHE_MAX - 1; ++i) {
-        stored[channel].history[i] = stored[channel].history[i + 1];
-        sum += stored[channel].history[i];
-    }
-    stored[channel].history[CACHE_MAX - 1] = value;
-    return sum + value;
-}
-
 // vim:ai:cin:sts=2 sw=2 ft=cpp

examples_linux/scanner.py

@@ -43,6 +43,14 @@ def __init__(self) -> None:
         #: for the total signal counts
         self.total: int = 0
 
+    def push(self, value: bool) -> int:
+        """Push a scan result's value into history while returning the sum of cached
+        signals found. This function also increments the total signal count accordingly.
+        """
+        self.history = self.history[1:] + [value]
+        self.total += value
+        return self.history.count(True)
+
 
 #: An array of histories for each channel
 stored = [ChannelHistory() for _ in range(TOTAL_CHANNELS)]
@@ -190,12 +198,9 @@ def main():
         while time.monotonic() < end:
             std_scr.addstr(2, 0, timer_prompt.format(int(end - time.monotonic())))
             val = scan_channel(channel)
-            stored[channel].history = stored[channel].history[1:] + [val]
-            stored[channel].total += val
+            cache_sum = stored[channel].push(val)
             if stored[channel].total:
-                bars[channel].update(
-                    stored[channel].history.count(True), stored[channel].total
-                )
+                bars[channel].update(cache_sum, stored[channel].total)
                 std_scr.refresh()
             if channel + 1 == TOTAL_CHANNELS:
                 channel = 0