1 files changed, 35 insertions, 8 deletions

diff --git a/src/GainControl.cpp b/src/GainControl.cpp
index b781640..84cf065 100644
--- a/src/GainControl.cpp
+++ b/src/GainControl.cpp
@@ -3,7 +3,7 @@
    Her Majesty the Queen in Right of Canada (Communications Research
    Center Canada)
 
-   Copyright (C) 2017
+   Copyright (C) 2023
    Matthias P. Braendli, matthias.braendli@mpb.li
 
     http://opendigitalradio.org
@@ -127,21 +127,25 @@ int GainControl::internal_process(Buffer* const dataIn, Buffer* dataOut)
 
     if ((sizeIn % m_frameSize) != 0) {
         PDEBUG("%zu != %zu\n", sizeIn, m_frameSize);
-        throw std::runtime_error(
-                "GainControl::process input size not valid!");
+        throw std::runtime_error("GainControl::process input size not valid!");
     }
 
     const auto constantGain4 = _mm_set1_ps(constantGain);
 
     for (size_t i = 0; i < sizeIn; i += m_frameSize) {
-        gain128.m = computeGain(in, m_frameSize);
+        // Do not apply gain computation to the NULL symbol, which either
+        // is blank or contains TII. Apply the gain calculation from the next
+        // symbol on the NULL symbol to get consistent TII power.
+        if (i > 0) {
+            gain128.m = computeGain(in, m_frameSize);
+        }
+        else {
+            gain128.m = computeGain(in + m_frameSize, m_frameSize);
+        }
         gain128.m = _mm_mul_ps(gain128.m, constantGain4);
 
         PDEBUG("********** Gain: %10f **********\n", gain128.f[0]);
 
-        ////////////////////////////////////////////////////////////////////////
-        // Applying gain to output data
-        ////////////////////////////////////////////////////////////////////////
         for (size_t sample = 0; sample < m_frameSize; ++sample) {
             out[sample] = _mm_mul_ps(in[sample], gain128.m);
         }
@@ -163,7 +167,12 @@ int GainControl::internal_process(Buffer* const dataIn, Buffer* dataOut)
     }
 
     for (size_t i = 0; i < sizeIn; i += m_frameSize) {
-        gain = constantGain * computeGain(in, m_frameSize);
+        // Do not apply gain computation to the NULL symbol, which either
+        // is blank or contains TII. Apply the gain calculation from the next
+        // symbol on the NULL symbol to get consistent TII power.
+        gain = constantGain * (i > 0 ?
+                computeGain(in, m_frameSize) :
+                computeGain(in + m_frameSize, m_frameSize));
 
         PDEBUG("********** Gain: %10f **********\n", gain);
 
@@ -574,3 +583,21 @@ const string GainControl::get_parameter(const string& parameter) const
     return ss.str();
 }
 
+const json::map_t GainControl::get_all_values() const
+{
+    json::map_t map;
+    map["digital"].v = m_digGain;
+    switch (m_gainmode) {
+        case GainMode::GAIN_FIX:
+            map["mode"].v = "fix";
+            break;
+        case GainMode::GAIN_MAX:
+            map["mode"].v = "max";
+            break;
+        case GainMode::GAIN_VAR:
+            map["mode"].v = "var";
+            break;
+    }
+    map["var"].v = m_var_variance_rc;
+    return map;
+}