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/include/audio_events.hpp     | 4 ++++
 src/audio/include/audio_fsm.hpp        | 2 ++
 src/audio/include/i2s_audio_output.hpp | 4 ++++
 3 files changed, 10 insertions(+)

(limited to 'src/audio/include')

diff --git a/src/audio/include/audio_events.hpp b/src/audio/include/audio_events.hpp
index 8ee8b057..7433d159 100644
--- a/src/audio/include/audio_events.hpp
+++ b/src/audio/include/audio_events.hpp
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <stdint.h>
 #include <cstdint>
 #include <string>
 
@@ -36,6 +37,9 @@ struct PlayFile : tinyfsm::Event {
 };
 
 struct VolumeChanged : tinyfsm::Event {};
+struct ChangeMaxVolume : tinyfsm::Event {
+  uint16_t new_max;
+};
 
 struct TogglePlayPause : tinyfsm::Event {};
 
diff --git a/src/audio/include/audio_fsm.hpp b/src/audio/include/audio_fsm.hpp
index 1376feae..46d3d338 100644
--- a/src/audio/include/audio_fsm.hpp
+++ b/src/audio/include/audio_fsm.hpp
@@ -44,6 +44,7 @@ class AudioState : public tinyfsm::Fsm<AudioState> {
   void react(const system_fsm::KeyUpChanged&);
   void react(const system_fsm::KeyDownChanged&);
   void react(const system_fsm::HasPhonesChanged&);
+  void react(const ChangeMaxVolume&);
 
   virtual void react(const system_fsm::BootComplete&) {}
 
@@ -63,6 +64,7 @@ class AudioState : public tinyfsm::Fsm<AudioState> {
   static std::shared_ptr<FatfsAudioInput> sFileSource;
   static std::unique_ptr<Decoder> sDecoder;
   static std::shared_ptr<SampleConverter> sSampleConverter;
+  static std::shared_ptr<I2SAudioOutput> sI2SOutput;
   static std::shared_ptr<IAudioOutput> sOutput;
 
   static std::optional<database::TrackId> sCurrentTrack;
diff --git a/src/audio/include/i2s_audio_output.hpp b/src/audio/include/i2s_audio_output.hpp
index fa09deef..17f6b71a 100644
--- a/src/audio/include/i2s_audio_output.hpp
+++ b/src/audio/include/i2s_audio_output.hpp
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <stdint.h>
 #include <cstdint>
 #include <memory>
 #include <vector>
@@ -25,6 +26,9 @@ class I2SAudioOutput : public IAudioOutput {
 
   auto SetInUse(bool) -> void override;
 
+  auto SetMaxVolume(uint16_t) -> void;
+  auto SetVolumeDb(uint16_t) -> void;
+
   auto SetVolumeImbalance(int_fast8_t balance) -> void override;
   auto SetVolume(uint_fast8_t percent) -> void override;
   auto GetVolume() -> uint_fast8_t override;
-- 
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