Add a stream source that generates a sine wave

1 files changed, 13 insertions, 0 deletions

diff --git a/src/tangara/audio/audio_fsm.cpp b/src/tangara/audio/audio_fsm.cpp
index 71f41938..fb186acc 100644
--- a/src/tangara/audio/audio_fsm.cpp
+++ b/src/tangara/audio/audio_fsm.cpp
@@ -11,6 +11,8 @@
 #include <memory>
 #include <variant>
 
+#include "audio/audio_source.hpp"
+#include "audio/sine_source.hpp"
 #include "cppbor.h"
 #include "cppbor_parse.h"
 #include "esp_heap_caps.h"
@@ -146,6 +148,17 @@ void AudioState::react(const SetTrack& ev) {
   });
 }
 
+void AudioState::react(const PlaySineWave& ev) {
+  auto tags = std::make_shared<database::TrackTags>();
+
+  std::stringstream title;
+  title << ev.frequency << "Hz Sine Wave";
+  tags->title(title.str());
+
+  sDecoder->open(std::make_shared<TaggedStream>(
+      tags, std::make_unique<SineSource>(ev.frequency), title.str()));
+}
+
 void AudioState::react(const TogglePlayPause& ev) {
   sIsPaused = !ev.set_to.value_or(sIsPaused);
   if (!sIsPaused && is_in_state<states::Standby>() &&