Changed volume to go in 5pct steps

src/tangara/audio/bt_audio_output.cpp

@@ -32,6 +32,7 @@
 namespace audio {
 
 static constexpr uint16_t kVolumeRange = 60;
+static constexpr uint16_t kVolumeStep = 5; // CUSTOM - added
 
 using ConnectionState = drivers::Bluetooth::ConnectionState;
 
@@ -101,7 +102,11 @@ auto BluetoothAudioOutput::AdjustVolumeUp() -> bool {
   if (volume_ == 100) {
     return false;
   }
-  volume_++;
+  if (volume_ > 100 - kVolumeStep) {
+    volume_ = 100;
+  } else {
+    volume_ += kVolumeStep;
+  }
   SetVolume(volume_);
   return true;
 }
@@ -110,7 +115,11 @@ auto BluetoothAudioOutput::AdjustVolumeDown() -> bool {
   if (volume_ == 0) {
     return false;
   }
-  volume_--;
+  if (volume_ < kVolumeStep) {
+    volume_ = 0;
+  } else {
+    volume_ -= kVolumeStep;
+  }
   SetVolume(volume_);
   return true;
 }

src/tangara/audio/i2s_audio_output.cpp

@@ -40,6 +40,7 @@ static constexpr uint16_t kMinVolume = 0b0;
 static constexpr uint16_t kMaxVolumeBeforeClipping = 0x185;
 static constexpr uint16_t kLineLevelVolume = 0x13d;
 static constexpr uint16_t kDefaultVolume = 0x100;
+static constexpr uint16_t kVolumeStep = 5; // CUSTOM - added
 
 I2SAudioOutput::I2SAudioOutput(drivers::IGpios& expander,
                                drivers::OutputBuffers& buffers)
@@ -140,21 +141,29 @@ auto I2SAudioOutput::SetVolumeDb(int_fast16_t val) -> bool {
 }
 
 auto I2SAudioOutput::AdjustVolumeUp() -> bool {
-  if (GetVolume() >= max_volume_) {
+  uint16_t vol = GetVolume();
+  if (vol >= max_volume_) {
     return false;
   }
-  SetVolume(GetVolume() + 1);
+
+  if (vol > max_volume_ - kVolumeStep) {
+    SetVolume(max_volume_);
+  } else {
+    SetVolume(vol + kVolumeStep);
+  }
+
   return true;
 }
 
 auto I2SAudioOutput::AdjustVolumeDown() -> bool {
-  if (GetVolume() == kMinVolume) {
+  uint16_t vol = GetVolume();
+  if (vol == kMinVolume) {
     return false;
   }
-  if (GetVolume() <= kMinVolume + 1) {
+  if (vol <= kMinVolume + kVolumeStep) {
     SetVolume(0);
   } else {
-    SetVolume(GetVolume() - 1);
+    SetVolume(vol - kVolumeStep);
   }
   return true;
 }