Merge pull request 'lua-volume' (#60) from lua-volume into main

Reviewed-on: https://codeberg.org/cool-tech-zone/tangara-fw/pulls/60
Reviewed-by: cooljqln <cooljqln@noreply.codeberg.org>

1 files changed, 22 insertions, 2 deletions

diff --git a/src/audio/bt_audio_output.cpp b/src/audio/bt_audio_output.cpp
index 04daf71f..7d6bade2 100644
--- a/src/audio/bt_audio_output.cpp
+++ b/src/audio/bt_audio_output.cpp
@@ -9,6 +9,7 @@
 #include <algorithm>
 #include <cstddef>
 #include <cstdint>
+#include <cmath>
 #include <memory>
 #include <variant>
 
@@ -54,11 +55,30 @@ auto BluetoothAudioOutput::GetVolume() -> uint16_t {
 }
 
 auto BluetoothAudioOutput::GetVolumePct() -> uint_fast8_t {
-  return static_cast<uint_fast8_t>(static_cast<int>(volume_) * 100 / 0x7f);
+  return static_cast<uint_fast8_t>(round(static_cast<int>(volume_) * 100.0 / 0x7f));
+}
+
+auto BluetoothAudioOutput::SetVolumePct(uint_fast8_t val) -> bool {
+  if (val > 100) {
+    return false;
+  }
+  uint16_t vol = (val * (0x7f))/100;
+  SetVolume(vol);
+  return true;
 }
 
 auto BluetoothAudioOutput::GetVolumeDb() -> int_fast16_t {
-  return 0;
+  double pct = GetVolumePct()/100.0;
+  if (pct <= 0) {
+    pct = 0.01;
+  }
+  int_fast16_t db = log(pct) * 20;
+  return db;
+}
+
+auto BluetoothAudioOutput::SetVolumeDb(int_fast16_t val) -> bool {
+  double pct = exp(val / 20.0) * 100;
+  return SetVolumePct(pct);
 }
 
 auto BluetoothAudioOutput::AdjustVolumeUp() -> bool {