From d5d6e3993cd67238ff245446e69e2f200c3fd0e5 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Mon, 4 Sep 2023 16:17:55 +1000
Subject: Support changing max volume, persisted to nvs

---
 src/audio/i2s_audio_output.cpp | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

(limited to 'src/audio/i2s_audio_output.cpp')

diff --git a/src/audio/i2s_audio_output.cpp b/src/audio/i2s_audio_output.cpp
index 927f6541..68b03145 100644
--- a/src/audio/i2s_audio_output.cpp
+++ b/src/audio/i2s_audio_output.cpp
@@ -5,6 +5,7 @@
  */
 
 #include "i2s_audio_output.hpp"
+#include <stdint.h>
 
 #include <algorithm>
 #include <cstddef>
@@ -48,9 +49,8 @@ I2SAudioOutput::I2SAudioOutput(drivers::IGpios& expander,
       dac_(std::move(dac)),
       current_config_(),
       left_difference_(0),
-      current_volume_(kDefaultVolume),
-      max_volume_(kLineLevelVolume) {
-  SetVolume(GetVolume());
+      current_volume_(0),
+      max_volume_(0) {
   dac_->SetSource(stream());
 }
 
@@ -72,6 +72,18 @@ auto I2SAudioOutput::SetVolumeImbalance(int_fast8_t balance) -> void {
   SetVolume(GetVolume());
 }
 
+auto I2SAudioOutput::SetMaxVolume(uint16_t max) -> void {
+  max_volume_ = std::clamp(max, drivers::wm8523::kAbsoluteMinVolume,
+                           drivers::wm8523::kAbsoluteMaxVolume);
+  SetVolume(GetVolume());
+}
+
+auto I2SAudioOutput::SetVolumeDb(uint16_t vol) -> void {
+  current_volume_ =
+      std::clamp(vol, drivers::wm8523::kAbsoluteMinVolume, max_volume_);
+  SetVolume(GetVolume());
+}
+
 auto I2SAudioOutput::SetVolume(uint_fast8_t percent) -> void {
   percent = std::min<uint_fast8_t>(percent, 100);
   float new_value = static_cast<float>(max_volume_) / 100 * percent;
-- 
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