refactor(audio): remove unused set min and max input gain

audio/include/audio/iaudiocontrol.h

@@ -111,10 +111,7 @@ public:
     virtual qreal minOutputVolume() const = 0;
 
     virtual qreal minInputGain() const = 0;
-    virtual void setMinInputGain(qreal dB) = 0;
-
     virtual qreal maxInputGain() const = 0;
-    virtual void setMaxInputGain(qreal dB) = 0;
 
     virtual qreal inputGain() const = 0;
     virtual void setInputGain(qreal dB) = 0;

audio/src/backend/openal.cpp

@@ -56,6 +56,8 @@ void applyGain(int16_t* buffer, uint32_t bufferSize, qreal gainFactor)
 
 static const unsigned int BUFFER_COUNT = 16;
 static const uint32_t AUDIO_CHANNELS = 2;
+constexpr qreal OpenAL::minInGain;
+constexpr qreal OpenAL::maxInGain;
 
 OpenAL::OpenAL(IAudioSettings& _settings)
     : settings{_settings}
@@ -161,17 +163,6 @@ qreal OpenAL::minInputGain() const
     return minInGain;
 }
 
-/**
- * @brief Set the minimum allowed gain value in dB.
- *
- * @note Default is -30dB; usually you don't need to alter this value;
- */
-void OpenAL::setMinInputGain(qreal dB)
-{
-    QMutexLocker locker(&audioLock);
-    minInGain = dB;
-}
-
 /**
  * @brief The maximum gain value for an input device.
  *
@@ -183,17 +174,6 @@ qreal OpenAL::maxInputGain() const
     return maxInGain;
 }
 
-/**
- * @brief Set the maximum allowed gain value in dB.
- *
- * @note Default is 30dB; usually you don't need to alter this value.
- */
-void OpenAL::setMaxInputGain(qreal dB)
-{
-    QMutexLocker locker(&audioLock);
-    maxInGain = dB;
-}
-
 /**
  * @brief The minimum threshold value for an input device.
  *

audio/src/backend/openal.h

@@ -66,10 +66,7 @@ public:
     void setOutputVolume(qreal volume);
 
     qreal minInputGain() const;
-    void setMinInputGain(qreal dB);
-
     qreal maxInputGain() const;
-    void setMaxInputGain(qreal dB);
 
     qreal inputGain() const;
     void setInputGain(qreal dB);
@@ -156,8 +153,8 @@ protected:
     int channels = 0;
     qreal gain = 0;
     qreal gainFactor = 1;
-    qreal minInGain = -30;
-    qreal maxInGain = 30;
+    static constexpr qreal minInGain = -30;
+    static constexpr qreal maxInGain = 30;
     qreal inputThreshold = 0;
     qreal voiceHold = 250;
     bool isActive = false;