Keep graph extrema readable and validate accepted packet counters

tests/test_etcp_packet_link.c

@@ -73,11 +73,11 @@ int main(void) {
 
     /* Счётчик ETCP измеряет принятие драйвером, включая временную очередь UDP; отказ не считается. */
     uint64_t sent_before = conn->diagnostic_wire_tx_bytes;
-    const uint8_t value = 42; first.blocked = 1;
-    assert(etcp_link_io_send(a, &value, 1) == 1 && conn->diagnostic_wire_tx_bytes == sent_before + 1);
-    assert(etcp_link_io_send(a, &value, 1) == -2 && conn->diagnostic_wire_tx_bytes == sent_before + 1);
+    const uint8_t value[8] = {42}; first.blocked = 1;
+    assert(etcp_link_io_send(a, value, sizeof(value)) == 8 && conn->diagnostic_wire_tx_bytes == sent_before + sizeof(value));
+    assert(etcp_link_io_send(a, value, sizeof(value)) == -2 && conn->diagnostic_wire_tx_bytes == sent_before + sizeof(value));
     first.blocked = 0; etcp_link_io_socket_writable(sock.fd, &sock);
-    assert(conn->diagnostic_wire_tx_bytes == sent_before + 1 && etcp_link_io_ready(a));
+    assert(conn->diagnostic_wire_tx_bytes == sent_before + sizeof(value) && etcp_link_io_ready(a));
 
     /* Подготовка не снимает ACK; отказ не меняет очередь/служебные признаки. */
     b->initialized = b->link_status = 0;

tools/chatgui/src/call_audio_graphs.cpp

@@ -63,11 +63,12 @@ void CallAudioGraphs::paintEvent(QPaintEvent*) {
         double top = std::max(high, bottom + span) + span * .05;
         double y = 58 + index * row;
         p.setPen(foreground); p.drawText(QRectF(16, y, width() - 32, 20), title);
-        p.setPen(muted); p.drawText(QRectF(16, y + 20, width() - 32, 18), legend);
-        p.drawText(QRectF(16, y, width() - 32, 20), Qt::AlignRight,
+        p.setPen(muted);
+        p.drawText(QRectF(16, y + 20, width() - 32, 18),
             have ? text("Min: %1 · Max: %2 %3").arg(low / factor, 0, 'f', factor == 1 ? 0 : 1)
                 .arg(high / factor, 0, 'f', factor == 1 ? 0 : 1).arg(unit) : text("No samples"));
-        QRectF box(62, y + 43, width() - 78, row - 66);
+        p.drawText(QRectF(16, y + 38, width() - 32, 32), Qt::TextWordWrap, legend);
+        QRectF box(62, y + 73, width() - 78, row - 96);
         auto px = [&](double time) { return box.left() + time / CALL_HISTORY_MS * box.width(); };
         auto py = [&](double value) { return box.bottom() - (value - bottom) / (top - bottom) * box.height(); };
         p.setPen(muted); p.drawText(QRectF(0, box.top(), 57, 16), Qt::AlignRight, QString::number(top / factor, 'f', factor == 1 ? 0 : 1));
@@ -85,6 +86,7 @@ void CallAudioGraphs::paintEvent(QPaintEvent*) {
             for (const auto& v : line.points) {
                 QPointF pos(px(v.x), py(v.y));
                 if (!started || v.gap) path.moveTo(pos); else path.lineTo(pos);
+                if (v.gap) { p.setPen(Qt::NoPen); p.setBrush(line.color); p.drawEllipse(pos, 1.5, 1.5); p.setBrush(Qt::NoBrush); }
                 started = true;
             }
             p.setPen(QPen(line.color, 1.5)); p.drawPath(path);
@@ -97,7 +99,7 @@ void CallAudioGraphs::paintEvent(QPaintEvent*) {
         double x = xValue(v.at_ms);
         receive[0].points.push_back({x, (double)v.low_ms, gap}); receive[0].points.push_back({x, (double)v.high_ms, false});
         receive[1].points.push_back({x, (double)v.reserve_ms, gap});
-        if (v.missing_samples) { receive[2].points.push_back({x, (double)v.low_ms, true}); receive[2].points.push_back({x, (double)v.high_ms + 10, false}); }
+        if (v.missing_samples) receive[2].points.push_back({x, (double)v.low_ms, true});
     }
     graph(0, text("Receive buffer"), text("Blue: buffer · Green: target · Red: missing audio"), receive, 100, text("ms"), {}, true);
     std::vector<GraphLine> transmit{{blue, {}}, {orange, {}}, {violet, {}}}, rate{{green, {}}};
@@ -117,16 +119,17 @@ void CallAudioGraphs::paintEvent(QPaintEvent*) {
           rate, 256, text("B/s"), text("KiB/s"), false);
     double y = 58 + 3 * row; p.setPen(foreground);
     p.drawText(QRectF(16, y, width() - 32, 20), text("Receive buffer distribution"));
-    p.setPen(muted); p.drawText(QRectF(16, y + 20, width() - 32, 18), text("Time weighted · Older samples lose half their weight every 10 seconds"));
+    p.setPen(muted); p.drawText(QRectF(16, y + 38, width() - 32, 32), Qt::TextWordWrap,
+        text("Time weighted · Older samples lose half their weight every 10 seconds"));
     int first = 0, last = CALL_HISTORY_BINS - 1;
     while (first < last && m_data.histogram[first] == 0) ++first;
     while (last > first && m_data.histogram[last] == 0) --last;
     if (!m_data.observed_ms) first = 0, last = 1;
     if (first == last) { first = std::max(0, first - 1); last = std::min(CALL_HISTORY_BINS - 1, last + 1); }
     double maximum = 0; for (double v : m_data.histogram) maximum = std::max(maximum, v);
-    p.drawText(QRectF(16, y, width() - 32, 20), Qt::AlignRight,
+    p.drawText(QRectF(16, y + 20, width() - 32, 18),
         text("Min: %1 · Max: %2 %3").arg(0).arg(maximum * 100, 0, 'f', 1).arg("%"));
-    QRectF box(62, y + 43, width() - 78, row - 66); double scale = std::max(.05, maximum) * 1.05;
+    QRectF box(62, y + 73, width() - 78, row - 96); double scale = std::max(.05, maximum) * 1.05;
     double barWidth = box.width() / (last - first + 1); p.setPen(Qt::NoPen); p.setBrush(blue);
     for (int i = first; i <= last; ++i) {
         double h = m_data.histogram[i] / scale * box.height();