[EGD-4176] Audio state notifications (#937)

Author: hubert-chrzaniuk

changelog.md

@@ -8,6 +8,7 @@
 * `[gui]` Add "ButtonOnOff" widget.
 * `[cellular]` Add support for modem reset
 * `[cellular]` Obtain time zone through network
+* `[audio]` Add state notifications
 * `[antenna]` Service-antenna enabled.
 
 ### Changed

module-services/service-audio/ServiceAudio.cpp

@@ -440,9 +440,20 @@ auto ServiceAudio::HandleKeyPressed(const int step) -> std::unique_ptr<AudioKeyP
     return std::make_unique<AudioKeyPressedResponse>(audio::RetCode::Success, newVolume, muted, context);
 }
 
+bool ServiceAudio::IsBusy()
+{
+    for (auto &input : audioMux.GetAllInputs()) {
+        if (input.audio->GetCurrentState() != Audio::State::Idle) {
+            return true;
+        }
+    }
+    return false;
+}
+
 sys::Message_t ServiceAudio::DataReceivedHandler(sys::DataMessage *msgl, sys::ResponseMessage *resp)
 {
     sys::Message_t responseMsg;
+    bool isBusy = IsBusy();
 
     auto &msgType = typeid(*msgl);
     LOG_DEBUG("msgType %d %s", static_cast<int>(msgl->messageType), msgType.name());
@@ -509,6 +520,13 @@ sys::Message_t ServiceAudio::DataReceivedHandler(sys::DataMessage *msgl, sys::Re
         LOG_DEBUG("Unhandled message");
     }
 
+    auto curIsBusy = IsBusy();
+    if (isBusy != curIsBusy) {
+        auto broadMsg = std::make_shared<AudioNotificationMessage>(
+            curIsBusy ? AudioNotificationMessage::Type::ServiceWakeUp : AudioNotificationMessage::Type::ServiceSleep);
+        sys::Bus::SendMulticast(broadMsg, sys::BusChannels::ServiceAudioNotifications, this);
+    }
+
     if (responseMsg) {
         return responseMsg;
     }

module-services/service-audio/ServiceAudio.hpp

@@ -77,6 +77,7 @@ class ServiceAudio : public sys::Service
     auto IsOperationEnabled(const audio::PlaybackType &plType, const audio::Operation::Type &opType) -> bool;
     constexpr auto IsResumable(const audio::PlaybackType &type) const -> bool;
     constexpr auto ShouldLoop(const std::optional<audio::PlaybackType> &type) const -> bool;
+    auto IsBusy() -> bool;
 
     void addOrIgnoreEntry(const std::string &profilePath, const std::string &defaultValue);
 

module-services/service-audio/messages/AudioMessage.hpp

@@ -46,10 +46,12 @@ class AudioNotificationMessage : public AudioMessage
     enum class Type
     {
         EndOfFile,
-        Stop
+        Stop,
+        ServiceWakeUp,
+        ServiceSleep,
     };
 
-    explicit AudioNotificationMessage(Type type, audio::Token token) : type(type), token(token)
+    explicit AudioNotificationMessage(Type type, audio::Token token = audio::Token()) : type(type), token(token)
     {}
 
     const Type type;