Merge remote-tracking branch 'origin/master' into develop

# Conflicts:
#	Moose Development/Moose/Sound/SRS.lua

Moose Development/Moose/Sound/SRS.lua

@@ -109,10 +109,10 @@
 --
 -- Use a specific voice with the @{#MSRS.SetVoice} function, e.g, `:SetVoice("Microsoft Hedda Desktop")`.
 -- Note that this must be installed on your windows system.
---
+-- 
 -- Note that you can set voices for each provider via the @{#MSRS.SetVoiceProvider} function. Also shortcuts are available, *i.e.*
 -- @{#MSRS.SetVoiceWindows}, @{#MSRS.SetVoiceGoogle}, @{#MSRS.SetVoiceAzure} and @{#MSRS.SetVoiceAmazon}.
---
+-- 
 -- For voices there are enumerators in this class to help you out on voice names:
 --
 --     MSRS.Voices.Microsoft -- e.g. MSRS.Voices.Microsoft.Hedda - the Microsoft enumerator contains all voices known to work with SRS
@@ -134,32 +134,32 @@
 -- ## Config file for many variables, auto-loaded by Moose
 --
 -- See @{#MSRS.LoadConfigFile} for details on how to set this up.
---
+-- 
 -- ## TTS Providers
---
+-- 
 -- The default provider for generating speech from text is the native Windows TTS service. Note that you need to install the voices you want to use.
 -- 
 -- **Pro-Tip** - use the command line with power shell to call `DCS-SR-ExternalAudio.exe` - it will tell you what is missing
 -- and also the Google Console error, in case you have missed a step in setting up your Google TTS.
 -- For example, `.\DCS-SR-ExternalAudio.exe -t "Text Message" -f 255 -m AM -c 2 -s 2 -z -G "Path_To_You_Google.Json"`
 -- plays a message on 255 MHz AM for the blue coalition in-game.
---
+-- 
 -- ### Google
---
+-- 
 -- In order to use Google Cloud for TTS you need to use @{#MSRS.SetProvider} and @{MSRS.SetProviderOptionsGoogle} functions:
---
+-- 
 --     msrs:SetProvider(MSRS.Provider.GOOGLE)
 --     msrs:SetProviderOptionsGoogle(CredentialsFile, AccessKey)
---
+--     
 -- The parameter `CredentialsFile` is used with the default 'DCS-SR-ExternalAudio.exe' backend and must be the full path to the credentials JSON file.
 -- The `AccessKey` parameter is used with the DCS-gRPC backend (see below).
---
+-- 
 -- You can set the voice to use with Google via @{#MSRS.SetVoiceGoogle}.
---
+-- 
 -- When using Google it also allows you to utilize SSML in your text for more flexibility.
 -- For more information on setting up a cloud account, visit: https://cloud.google.com/text-to-speech
 -- Google's supported SSML reference: https://cloud.google.com/text-to-speech/docs/ssml
---
+-- 
 -- ### Amazon Web Service [Only DCS-gRPC backend]
 -- 
 -- In order to use Amazon Web Service (AWS) for TTS you need to use @{#MSRS.SetProvider} and @{MSRS.SetProviderOptionsAmazon} functions:
@@ -172,21 +172,21 @@
 -- You can set the voice to use with AWS via @{#MSRS.SetVoiceAmazon}.
 -- 
 -- ### Microsoft Azure [Only DCS-gRPC backend]
---
+-- 
 -- In order to use Microsoft Azure for TTS you need to use @{#MSRS.SetProvider} and @{MSRS.SetProviderOptionsAzure} functions:
---
+-- 
 --     msrs:SetProvider(MSRS.Provider.AZURE)
 --     msrs:SetProviderOptionsAmazon(AccessKey, Region)
---
+--     
 -- The parameter `AccessKey` is your Azure access key. The parameter `Region` is your [Azure region](https://learn.microsoft.com/en-us/azure/cognitive-services/speech-service/regions).
---
+-- 
 -- You can set the voice to use with Azure via @{#MSRS.SetVoiceAzure}.
---
+-- 
 -- ## Backend
---
+-- 
 -- The default interface to SRS is via calling the 'DCS-SR-ExternalAudio.exe'. As noted above, this has the unavoidable drawback that a pop-up briefly appears
 -- and DCS might be put out of focus.
---
+-- 
 -- ## DCS-gRPC as an alternative to 'DCS-SR-ExternalAudio.exe' for TTS
 --
 -- Another interface to SRS is [DCS-gRPC](https://github.com/DCS-gRPC/rust-server). This does not call an exe file and therefore avoids the annoying pop-up window.
@@ -446,13 +446,15 @@ end
 -- @return #MSRS self
 function MSRS:New(Path, Frequency, Modulation, Backend)
 
+  -- Inherit everything from BASE class.
+  local self=BASE:Inherit(self, BASE:New()) -- #MSRS
+
+  self:F( {Path, Frequency, Modulation, Backend} )
+
   -- Defaults.
   Frequency = Frequency or 143
   Modulation = Modulation or radio.modulation.AM
 
-  -- Inherit everything from BASE class.
-  local self=BASE:Inherit(self, BASE:New()) -- #MSRS
-
   self.lid = string.format("%s-%s | ", "unknown", self.version)
 
   if not self.ConfigLoaded then
@@ -466,6 +468,7 @@ function MSRS:New(Path, Frequency, Modulation, Backend)
     self:SetCoalition()
     self:SetLabel()
     self:SetVolume()
+    self:SetBackend(Backend)
 
   else
 
@@ -483,6 +486,10 @@ function MSRS:New(Path, Frequency, Modulation, Backend)
       self:SetModulations(Modulation)
     end
 
+    if Backend then
+      self:SetBackend(Backend)
+    end
+
   end
 
   self.lid = string.format("%s-%s | ", self.name, self.version)
@@ -508,7 +515,7 @@ end
 -- @param #string Backend Backend used. Default is `MSRS.Backend.SRSEXE`.
 -- @return #MSRS self
 function MSRS:SetBackend(Backend)
-
+  self:F( {Backend=Backend} )
   self.backend=Backend or MSRS.Backend.SRSEXE
 
   return self
@@ -518,7 +525,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:SetBackendGRPC()
-
+  self:F()
   self:SetBackend(MSRS.Backend.GRPC)
 
   return self
@@ -527,8 +534,8 @@ end
 --- Set `DCS-SR-ExternalAudio.exe` as backend to communicate with SRS.
 -- @param #MSRS self
 -- @return #MSRS self
-function MSRS:SetBackendSRSEXE(Backend)
-
+function MSRS:SetBackendSRSEXE()
+  self:F()
   self:SetBackend(MSRS.Backend.SRSEXE)
 
   return self
@@ -537,12 +544,14 @@ end
 --- Set the default backend.
 -- @param #MSRS self
 function MSRS.SetDefaultBackend(Backend)
+  self:F( {Backend=Backend} )
   MSRS.backend=Backend or MSRS.Backend.SRSEXE
 end
 
 --- Set DCS-gRPC to be the default backend.
 -- @param #MSRS self
 function MSRS.SetDefaultBackendGRPC()
+  self:F()
   MSRS.backend=MSRS.Backend.GRPC
 end
 
@@ -558,6 +567,7 @@ end
 -- @param #string Path Path to the directory, where the sound file is located. Default is `C:\\Program Files\\DCS-SimpleRadio-Standalone`.
 -- @return #MSRS self
 function MSRS:SetPath(Path)
+  self:F( {Path=Path} )
 
   -- Set path.
   self.path=Path or "C:\\Program Files\\DCS-SimpleRadio-Standalone"
@@ -570,8 +580,8 @@ function MSRS:SetPath(Path)
   end
 
   -- Debug output.
-  self:T(string.format("SRS path=%s", self:GetPath()))
-
+  self:F(string.format("SRS path=%s", self:GetPath()))
+  
   return self
 end
 
@@ -587,6 +597,7 @@ end
 -- @param #number Volume Volume - 1.0 is max, 0.0 is silence
 -- @return #MSRS self
 function MSRS:SetVolume(Volume)
+  self:F( {Volume=Volume} )
   local volume = Volume or 1
   if volume > 1 then volume = 1 elseif volume < 0 then volume = 0 end
   self.volume = volume
@@ -605,6 +616,7 @@ end
 -- @param #number Label. Default "ROBOT"
 -- @return #MSRS self
 function MSRS:SetLabel(Label)
+  self:F( {Label=Label} )
   self.Label=Label or "ROBOT"
   return self
 end
@@ -621,6 +633,7 @@ end
 -- @param #number Port Port. Default 5002.
 -- @return #MSRS self
 function MSRS:SetPort(Port)
+  self:F( {Port=Port} )
   self.port=Port or 5002
   self:T(string.format("SRS port=%s", self:GetPort()))
   return self
@@ -638,6 +651,7 @@ end
 -- @param #number Coalition Coalition. Default 0.
 -- @return #MSRS self
 function MSRS:SetCoalition(Coalition)
+  self:F( {Coalition=Coalition} )
   self.coalition=Coalition or 0
   return self
 end
@@ -655,7 +669,7 @@ end
 -- @param #table Frequencies Frequencies in MHz. Can also be given as a #number if only one frequency should be used.
 -- @return #MSRS self
 function MSRS:SetFrequencies(Frequencies)
-
+  self:F( Frequencies )
   self.frequencies=UTILS.EnsureTable(Frequencies, false)
 
   return self
@@ -666,7 +680,7 @@ end
 -- @param #table Frequencies Frequencies in MHz. Can also be given as a #number if only one frequency should be used.
 -- @return #MSRS self
 function MSRS:AddFrequencies(Frequencies)
-
+  self:F( Frequencies )
   for _,_freq in pairs(UTILS.EnsureTable(Frequencies, false)) do
     self:T(self.lid..string.format("Adding frequency %s", tostring(_freq)))
     table.insert(self.frequencies,_freq)
@@ -688,7 +702,7 @@ end
 -- @param #table Modulations Modulations. Can also be given as a #number if only one modulation should be used.
 -- @return #MSRS self
 function MSRS:SetModulations(Modulations)
-
+  self:F( Modulations )
   self.modulations=UTILS.EnsureTable(Modulations, false)
 
   -- Debug info.
@@ -703,7 +717,7 @@ end
 -- @param #table Modulations Modulations. Can also be given as a #number if only one modulation should be used.
 -- @return #MSRS self
 function MSRS:AddModulations(Modulations)
-
+  self:F( Modulations )
    for _,_mod in pairs(UTILS.EnsureTable(Modulations, false)) do
     table.insert(self.modulations,_mod)
    end
@@ -723,7 +737,7 @@ end
 -- @param #string Gender Gender: "male" or "female" (default).
 -- @return #MSRS self
 function MSRS:SetGender(Gender)
-
+  self:F( {Gender=Gender} )
   Gender=Gender or "female"
 
   self.gender=Gender:lower()
@@ -739,7 +753,7 @@ end
 -- @param #string Culture Culture, *e.g.* "en-GB".
 -- @return #MSRS self
 function MSRS:SetCulture(Culture)
-
+  self:F( {Culture=Culture} )
   self.culture=Culture
 
   return self
@@ -750,7 +764,7 @@ end
 -- @param #string Voice Voice.
 -- @return #MSRS self
 function MSRS:SetVoice(Voice)
-
+  self:F( {Voice=Voice} )
   self.voice=Voice
 
   return self
@@ -762,9 +776,9 @@ end
 -- @param #string Provider Provider. Default is as set by @{#MSRS.SetProvider}, which itself defaults to `MSRS.Provider.WINDOWS` if not set.
 -- @return #MSRS self
 function MSRS:SetVoiceProvider(Voice, Provider)
-
+  self:F( {Voice=Voice, Provider=Provider} )
   self.poptions=self.poptions or {}
-
+  
   self.poptions[Provider or self:GetProvider()]=Voice
 
   return self
@@ -775,7 +789,7 @@ end
 -- @param #string Voice Voice. Default `"Microsoft Hazel Desktop"`.
 -- @return #MSRS self
 function MSRS:SetVoiceWindows(Voice)
-
+  self:F( {Voice=Voice} )
   self:SetVoiceProvider(Voice or "Microsoft Hazel Desktop", MSRS.Provider.WINDOWS)
 
   return self
@@ -786,7 +800,7 @@ end
 -- @param #string Voice Voice. Default `MSRS.Voices.Google.Standard.en_GB_Standard_A`.
 -- @return #MSRS self
 function MSRS:SetVoiceGoogle(Voice)
-
+  self:F( {Voice=Voice} )
   self:SetVoiceProvider(Voice or MSRS.Voices.Google.Standard.en_GB_Standard_A, MSRS.Provider.GOOGLE)
 
   return self
@@ -798,7 +812,7 @@ end
 -- @param #string Voice [Azure Voice](https://learn.microsoft.com/azure/cognitive-services/speech-service/language-support). Default `"en-US-AriaNeural"`.
 -- @return #MSRS self
 function MSRS:SetVoiceAzure(Voice)
-
+  self:F( {Voice=Voice} )
   self:SetVoiceProvider(Voice or "en-US-AriaNeural", MSRS.Provider.AZURE)
 
   return self
@@ -809,7 +823,7 @@ end
 -- @param #string Voice [AWS Voice](https://docs.aws.amazon.com/polly/latest/dg/voicelist.html). Default `"Brian"`.
 -- @return #MSRS self
 function MSRS:SetVoiceAmazon(Voice)
-
+  self:F( {Voice=Voice} )
   self:SetVoiceProvider(Voice or "Brian", MSRS.Provider.AMAZON)
 
   return self
@@ -822,7 +836,7 @@ end
 function MSRS:GetVoice(Provider)
 
   Provider=Provider or self.provider
-
+  
   if Provider and self.poptions[Provider] and self.poptions[Provider].voice then
     return self.poptions[Provider].voice
   else
@@ -836,7 +850,7 @@ end
 -- @param Core.Point#COORDINATE Coordinate Origin of the transmission.
 -- @return #MSRS self
 function MSRS:SetCoordinate(Coordinate)
-
+  self:F( Coordinate )
   self.coordinate=Coordinate
 
   return self
@@ -847,11 +861,11 @@ end
 -- @param #string PathToCredentials Full path to the google credentials JSON file, e.g. "C:\Users\username\Downloads\service-account-file.json". Can also be the Google API key.
 -- @return #MSRS self
 function MSRS:SetGoogle(PathToCredentials)
-
+  self:F( {PathToCredentials=PathToCredentials} )
   if PathToCredentials then
 
     self.provider = MSRS.Provider.GOOGLE
-
+    
     self:SetProviderOptionsGoogle(PathToCredentials, PathToCredentials)
 
   end
@@ -864,16 +878,17 @@ end
 -- @param #string APIKey API Key, usually a string of length 40 with characters and numbers.
 -- @return #MSRS self
 function MSRS:SetGoogleAPIKey(APIKey)
+  self:F( {APIKey=APIKey} )
   if APIKey then
-
+  
     self.provider = MSRS.Provider.GOOGLE
-
+    
     if self.poptions[MSRS.Provider.GOOGLE] then
       self.poptions[MSRS.Provider.GOOGLE].key=APIKey
     else
       self:SetProviderOptionsGoogle(nil ,APIKey)
     end
-
+    
   end
   return self
 end
@@ -881,18 +896,19 @@ end
 
 --- Set provider used to generate text-to-speech.
 -- These options are available:
---
+-- 
 -- - `MSRS.Provider.WINDOWS`: Microsoft Windows (default)
 -- - `MSRS.Provider.GOOGLE`: Google Cloud
 -- - `MSRS.Provider.AZURE`: Microsoft Azure (only with DCS-gRPC backend)
 -- - `MSRS.Provier.AMAZON`: Amazone Web Service (only with DCS-gRPC backend)
---
+-- 
 -- Note that all providers except Microsoft Windows need as additonal information the credentials of your account.
---
+-- 
 -- @param #MSRS self
 -- @param #string Provider
 -- @return #MSRS self
 function MSRS:SetProvider(Provider)
+  self:F( {Provider=Provider} )
   self.provider = Provider or MSRS.Provider.WINDOWS
   return self
 end
@@ -914,21 +930,15 @@ end
 -- @param #string Region Region to use.
 -- @return #MSRS.ProviderOptions Provider optionas table.
 function MSRS:SetProviderOptions(Provider, CredentialsFile, AccessKey, SecretKey, Region)
-
+  self:F( {Provider, CredentialsFile, AccessKey, SecretKey, Region} )
   local option=MSRS._CreateProviderOptions(Provider, CredentialsFile, AccessKey, SecretKey, Region)
 
   if self then
-
     self.poptions=self.poptions or {}
-
     self.poptions[Provider]=option
-
   else
-
     MSRS.poptions=MSRS.poptions or {}
-
     MSRS.poptions[Provider]=option
-
   end
 
   return option
@@ -942,7 +952,7 @@ end
 -- @param #string Region Region to use.
 -- @return #MSRS.ProviderOptions Provider optionas table.
 function MSRS._CreateProviderOptions(Provider, CredentialsFile, AccessKey, SecretKey, Region)
-
+  self:F( {Provider, CredentialsFile, AccessKey, SecretKey, Region} )
   local option={} --#MSRS.ProviderOptions
 
   option.provider=Provider
@@ -960,9 +970,8 @@ end
 -- @param #string AccessKey Your API access key. This is necessary if DCS-gRPC is used as backend.
 -- @return #MSRS self
 function MSRS:SetProviderOptionsGoogle(CredentialsFile, AccessKey)
-
+  self:F( {CredentialsFile, AccessKey} )
   self:SetProviderOptions(MSRS.Provider.GOOGLE, CredentialsFile, AccessKey)
-
   return self
 end
 
@@ -973,9 +982,8 @@ end
 -- @param #string Region Your AWS [region](https://docs.aws.amazon.com/general/latest/gr/pol.html).
 -- @return #MSRS self
 function MSRS:SetProviderOptionsAmazon(AccessKey, SecretKey, Region)
-
+  self:F( {AccessKey, SecretKey, Region} )
   self:SetProviderOptions(MSRS.Provider.AMAZON, nil, AccessKey, SecretKey, Region)
-
   return self
 end
 
@@ -985,9 +993,8 @@ end
 -- @param #string Region Your Azure [region](https://learn.microsoft.com/en-us/azure/cognitive-services/speech-service/regions).
 -- @return #MSRS self
 function MSRS:SetProviderOptionsAzure(AccessKey, Region)
-
+  self:F( {AccessKey, Region} )
   self:SetProviderOptions(MSRS.Provider.AZURE, nil, AccessKey, nil, Region)
-
   return self
 end
 
@@ -1005,6 +1012,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:SetTTSProviderGoogle()
+  self:F()
   self:SetProvider(MSRS.Provider.GOOGLE)
   return self
 end
@@ -1013,6 +1021,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:SetTTSProviderMicrosoft()
+  self:F()
   self:SetProvider(MSRS.Provider.WINDOWS)
   return self
 end
@@ -1022,6 +1031,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:SetTTSProviderAzure()
+  self:F()
   self:SetProvider(MSRS.Provider.AZURE)
   return self
 end
@@ -1030,6 +1040,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:SetTTSProviderAmazon()
+  self:F()
   self:SetProvider(MSRS.Provider.AMAZON)
   return self
 end
@@ -1039,7 +1050,7 @@ end
 -- @param #MSRS self
 -- @return #MSRS self
 function MSRS:Help()
-
+  self:F()
   -- Path and exe.
   local path=self:GetPath()
   local exe="DCS-SR-ExternalAudio.exe"
@@ -1074,14 +1085,22 @@ end
 -- @param #number Delay Delay in seconds, before the sound file is played.
 -- @return #MSRS self
 function MSRS:PlaySoundFile(Soundfile, Delay)
+  self:F( {Soundfile, Delay} )
+
+  -- Sound file name.
+  local soundfile=Soundfile:GetName()
+
+  -- First check if text file exists!
+  local exists=UTILS.FileExists(soundfile)
+  if not exists then
+    self:E("ERROR: MSRS sound file does not exist! File="..soundfile)
+    return self
+  end
 
   if Delay and Delay>0 then
     self:ScheduleOnce(Delay, MSRS.PlaySoundFile, self, Soundfile, 0)
   else
 
-    -- Sound file name.
-    local soundfile=Soundfile:GetName()
-
     -- Get command.
     local command=self:_GetCommand()
 
@@ -1102,26 +1121,25 @@ end
 -- @param #number Delay Delay in seconds, before the sound file is played.
 -- @return #MSRS self
 function MSRS:PlaySoundText(SoundText, Delay)
+  self:F( {SoundText, Delay} )
 
   if Delay and Delay>0 then
     self:ScheduleOnce(Delay, MSRS.PlaySoundText, self, SoundText, 0)
   else
-
+  
     if self.backend==MSRS.Backend.GRPC then
-
       self:_DCSgRPCtts(SoundText.text, nil, SoundText.gender, SoundText.culture, SoundText.voice, SoundText.volume, SoundText.label, SoundText.coordinate)
-
     else
 
       -- Get command.
       local command=self:_GetCommand(nil, nil, nil, SoundText.gender, SoundText.voice, SoundText.culture, SoundText.volume, SoundText.speed)
-
+  
       -- Append text.
       command=command..string.format(" --text=\"%s\"", tostring(SoundText.text))
-
+  
       -- Execute command.
       self:_ExecCommand(command)
-
+      
     end
 
   end
@@ -1136,20 +1154,17 @@ end
 -- @param Core.Point#COORDINATE Coordinate Coordinate.
 -- @return #MSRS self
 function MSRS:PlayText(Text, Delay, Coordinate)
+  self:F( {Text, Delay, Coordinate} )
 
   if Delay and Delay>0 then
     self:ScheduleOnce(Delay, MSRS.PlayText, self, Text, nil, Coordinate)
   else
 
     if self.backend==MSRS.Backend.GRPC then
-
       self:T(self.lid.."Transmitting")
       self:_DCSgRPCtts(Text, nil, nil , nil, nil, nil, nil, Coordinate)
-
     else
-
       self:PlayTextExt(Text, Delay, nil, nil, nil, nil, nil, nil, nil, Coordinate)
-
     end
 
   end
@@ -1171,29 +1186,30 @@ end
 -- @param Core.Point#COORDINATE Coordinate Coordinate.
 -- @return #MSRS self
 function MSRS:PlayTextExt(Text, Delay, Frequencies, Modulations, Gender, Culture, Voice, Volume, Label, Coordinate)
+  self:F( {Text, Delay, Frequencies, Modulations, Gender, Culture, Voice, Volume, Label, Coordinate} )
 
   if Delay and Delay>0 then
     self:ScheduleOnce(Delay, MSRS.PlayTextExt, self, Text, 0, Frequencies, Modulations, Gender, Culture, Voice, Volume, Label, Coordinate)
   else
-
+  
     Frequencies = Frequencies or self:GetFrequencies()
     Modulations = Modulations or self:GetModulations()
-
+  
     if self.backend==MSRS.Backend.SRSEXE then
 
       -- Get command line.
       local command=self:_GetCommand(UTILS.EnsureTable(Frequencies, false), UTILS.EnsureTable(Modulations, false), nil, Gender, Voice, Culture, Volume, nil, nil, Label, Coordinate)
-
+  
       -- Append text.
       command=command..string.format(" --text=\"%s\"", tostring(Text))
-
+  
       -- Execute command.
       self:_ExecCommand(command)
-
+      
     elseif self.backend==MSRS.Backend.GRPC then
-
+    
       self:_DCSgRPCtts(Text, Frequencies, Gender, Culture, Voice, Volume, Label, Coordinate)
-
+    
     end
 
   end
@@ -1208,6 +1224,7 @@ end
 -- @param #number Delay Delay in seconds, before the message is played.
 -- @return #MSRS self
 function MSRS:PlayTextFile(TextFile, Delay)
+  self:F( {TextFile, Delay} )
 
   if Delay and Delay>0 then
     self:ScheduleOnce(Delay, MSRS.PlayTextFile, self, TextFile, 0)
@@ -1249,10 +1266,11 @@ end
 --- Get lat, long and alt from coordinate.
 -- @param #MSRS self
 -- @param Core.Point#Coordinate Coordinate Coordinate. Can also be a DCS#Vec3.
--- @return #number Latitude (or 0 if no input coordinate was given).
--- @return #number Longitude (or 0 if no input coordinate was given).
+-- @return #number Latitude (or 0 if no input coordinate was given). 
+-- @return #number Longitude (or 0 if no input coordinate was given). 
 -- @return #number Altitude (or 0 if no input coordinate was given).
 function MSRS:_GetLatLongAlt(Coordinate)
+  self:F( {Coordinate=Coordinate} )
 
   local lat=0.0
   local lon=0.0
@@ -1284,6 +1302,7 @@ end
 -- @param Core.Point#COORDINATE coordinate Coordinate.
 -- @return #string Command.
 function MSRS:_GetCommand(freqs, modus, coal, gender, voice, culture, volume, speed, port, label, coordinate)
+  self:F( {freqs, modus, coal, gender, voice, culture, volume, speed, port, label, coordinate} )
 
   local path=self:GetPath()
   local exe="DCS-SR-ExternalAudio.exe"
@@ -1332,7 +1351,7 @@ function MSRS:_GetCommand(freqs, modus, coal, gender, voice, culture, volume, sp
 
   -- Set provider options
   if self.provider==MSRS.Provider.GOOGLE then
-    local pops=self:GetProviderOptions()
+    local pops=self:GetProviderOptions()    
     command=command..string.format(' --ssml -G "%s"', pops.credentials)
   elseif self.provider==MSRS.Provider.WINDOWS then
     -- Nothing to do.
@@ -1356,82 +1375,83 @@ end
 -- @param #string command Command to executer
 -- @return #number Return value of os.execute() command.
 function MSRS:_ExecCommand(command)
+  self:F( {command=command} )
 
-    -- Skip this function if _GetCommand was not able to find the executable
-    if string.find(command, "CommandNotFound") then return 0 end
+  -- Skip this function if _GetCommand was not able to find the executable
+  if string.find(command, "CommandNotFound") then return 0 end
+
+  local batContent = command.." && exit"
+  -- Create a tmp file.
+  local filename=os.getenv('TMP').."\\MSRS-"..MSRS.uuid()..".bat"
+
+  local script=io.open(filename, "w+")
+  script:write(batContent)
+  script:close()
+
+  self:T("MSRS batch file created: "..filename)
+  self:T("MSRS batch content: "..batContent)
+
+  local res=nil
+  if true then
 
-    local batContent = command.." && exit"
     -- Create a tmp file.
-    local filename=os.getenv('TMP').."\\MSRS-"..MSRS.uuid()..".bat"
+    local filenvbs = os.getenv('TMP') .. "\\MSRS-"..MSRS.uuid()..".vbs"
 
-    local script=io.open(filename, "w+")
-    script:write(batContent)
+    -- VBS script
+    local script = io.open(filenvbs, "w+")
+    script:write(string.format('Dim WinScriptHost\n'))
+    script:write(string.format('Set WinScriptHost = CreateObject("WScript.Shell")\n'))
+    script:write(string.format('WinScriptHost.Run Chr(34) & "%s" & Chr(34), 0\n', filename))
+    script:write(string.format('Set WinScriptHost = Nothing'))
+    script:close()
+    self:T("MSRS vbs file created to start batch="..filenvbs)
+
+    -- Run visual basic script. This still pops up a window but very briefly and does not put the DCS window out of focus.
+    local runvbs=string.format('cscript.exe //Nologo //B "%s"', filenvbs)
+
+    -- Debug output.
+    self:T("MSRS execute VBS command="..runvbs)
+
+    -- Play file in 0.01 seconds
+    res=os.execute(runvbs)
+
+    -- Remove file in 1 second.
+    timer.scheduleFunction(os.remove, filename, timer.getTime()+1)
+    timer.scheduleFunction(os.remove, filenvbs, timer.getTime()+1)
+    self:T("MSRS vbs and batch file removed")
+
+  elseif false then
+
+    -- Create a tmp file.
+    local filenvbs = os.getenv('TMP') .. "\\MSRS-"..MSRS.uuid()..".vbs"
+
+    -- VBS script
+    local script = io.open(filenvbs, "w+")
+    script:write(string.format('Set oShell = CreateObject ("Wscript.Shell")\n'))
+    script:write(string.format('Dim strArgs\n'))
+    script:write(string.format('strArgs = "cmd /c %s"\n', filename))
+    script:write(string.format('oShell.Run strArgs, 0, false'))
     script:close()
 
-    self:T("MSRS batch file created: "..filename)
-    self:T("MSRS batch content: "..batContent)
+    local runvbs=string.format('cscript.exe //Nologo //B "%s"', filenvbs)
 
-    local res=nil
-    if true then
+    -- Play file in 0.01 seconds
+    res=os.execute(runvbs)
 
-      -- Create a tmp file.
-      local filenvbs = os.getenv('TMP') .. "\\MSRS-"..MSRS.uuid()..".vbs"
+  else
+    -- Play command.
+    command=string.format('start /b "" "%s"', filename)
 
-      -- VBS script
-      local script = io.open(filenvbs, "w+")
-      script:write(string.format('Dim WinScriptHost\n'))
-      script:write(string.format('Set WinScriptHost = CreateObject("WScript.Shell")\n'))
-      script:write(string.format('WinScriptHost.Run Chr(34) & "%s" & Chr(34), 0\n', filename))
-      script:write(string.format('Set WinScriptHost = Nothing'))
-      script:close()
-      self:T("MSRS vbs file created to start batch="..filenvbs)
+    -- Debug output.
+    self:T("MSRS execute command="..command)
 
-      -- Run visual basic script. This still pops up a window but very briefly and does not put the DCS window out of focus.
-      local runvbs=string.format('cscript.exe //Nologo //B "%s"', filenvbs)
+    -- Execute command
+    res=os.execute(command)
 
-      -- Debug output.
-      self:T("MSRS execute VBS command="..runvbs)
+    -- Remove file in 1 second.
+    timer.scheduleFunction(os.remove, filename, timer.getTime()+1)
 
-      -- Play file in 0.01 seconds
-      res=os.execute(runvbs)
-
-      -- Remove file in 1 second.
-      timer.scheduleFunction(os.remove, filename, timer.getTime()+1)
-      timer.scheduleFunction(os.remove, filenvbs, timer.getTime()+1)
-      self:T("MSRS vbs and batch file removed")
-
-    elseif false then
-
-      -- Create a tmp file.
-      local filenvbs = os.getenv('TMP') .. "\\MSRS-"..MSRS.uuid()..".vbs"
-
-      -- VBS script
-      local script = io.open(filenvbs, "w+")
-      script:write(string.format('Set oShell = CreateObject ("Wscript.Shell")\n'))
-      script:write(string.format('Dim strArgs\n'))
-      script:write(string.format('strArgs = "cmd /c %s"\n', filename))
-      script:write(string.format('oShell.Run strArgs, 0, false'))
-      script:close()
-
-      local runvbs=string.format('cscript.exe //Nologo //B "%s"', filenvbs)
-
-      -- Play file in 0.01 seconds
-      res=os.execute(runvbs)
-
-    else
-      -- Play command.
-      command=string.format('start /b "" "%s"', filename)
-
-      -- Debug output.
-      self:T("MSRS execute command="..command)
-
-      -- Execute command
-      res=os.execute(command)
-
-      -- Remove file in 1 second.
-      timer.scheduleFunction(os.remove, filename, timer.getTime()+1)
-
-    end
+  end
 
 
   return res
@@ -1490,19 +1510,19 @@ end
 function MSRS:_DCSgRPCtts(Text, Frequencies, Gender, Culture, Voice, Volume, Label, Coordinate)
 
   -- Debug info.
-  self:T("MSRS_BACKEND_DCSGRPC:_DCSgRPCtts()")
-  self:T({Text, Frequencies, Gender, Culture, Voice, Volume, Label, Coordinate})
+  self:F("MSRS_BACKEND_DCSGRPC:_DCSgRPCtts()")
+  self:F({Text, Frequencies, Gender, Culture, Voice, Volume, Label, Coordinate})
 
   local options = {} -- #MSRS.GRPCOptions
-
+  
   local ssml = Text or ''
-
+  
   -- Get frequenceies.
   Frequencies = UTILS.EnsureTable(Frequencies, true) or self:GetFrequencies()
-
+  
   -- Plain text (not really used.
   options.plaintext=Text
-
+  
   -- Name shows as sender.
   options.srsClientName = Label or self.Label
 
@@ -1510,18 +1530,19 @@ function MSRS:_DCSgRPCtts(Text, Frequencies, Gender, Culture, Voice, Volume, Lab
   if self.coordinate then
     options.position = {}
     options.position.lat, options.position.lon, options.position.alt = self:_GetLatLongAlt(self.coordinate)
-  end
-
+  end  
+    
   -- Coalition (gRPC expects lower case)
   options.coalition = UTILS.GetCoalitionName(self.coalition):lower()
 
   -- Provider (win, gcloud, ...)
   local provider = self.provider or MSRS.Provider.WINDOWS
+  self:F({provider=provider})
 
   -- Provider options: voice, credentials
   options.provider = {}
   options.provider[provider] = self:GetProviderOptions(provider)
-
+  
   -- Voice
   Voice=Voice or self:GetVoice(self.provider) or self.voice
 
@@ -1529,11 +1550,10 @@ function MSRS:_DCSgRPCtts(Text, Frequencies, Gender, Culture, Voice, Volume, Lab
     -- We use a specific voice
     options.provider[provider].voice = Voice
   else
-  
     -- DCS-gRPC doesn't directly support language/gender, but can use SSML
-
+    
     local preTag, genderProp, langProp, postTag = '', '', '', ''
-
+  
     local gender=""
     if self.gender then
       gender=string.format(' gender=\"%s\"', self.gender)
@@ -1547,12 +1567,11 @@ function MSRS:_DCSgRPCtts(Text, Frequencies, Gender, Culture, Voice, Volume, Lab
       ssml=string.format("<voice%s%s>%s</voice>", gender, language, Text)
     end
   end
-
+  
   for _,freq in pairs(Frequencies) do
-    self:T("GRPC.tts")
-    self:T(ssml)
-    self:T(freq)
-    self:T(options)
+    self:F("Calling GRPC.tts with the following parameter:")
+    self:F({ssml=ssml, freq=freq, options=options})
+    self:F(options.provider[provider])
     GRPC.tts(ssml, freq*1e6, options)
   end
 
@@ -1592,7 +1611,7 @@ end
 --       -- Windows
 --       win = {
 --         voice = "Microsoft Hazel Desktop",
---       },
+--       },   
 --       -- Google Cloud
 --       gcloud = {
 --         voice = "en-GB-Standard-A", -- The Google Cloud voice to use (see https://cloud.google.com/text-to-speech/docs/voices).
@@ -1608,7 +1627,7 @@ end
 --       },
 --       -- Microsoft Azure
 --       azure = {
---         voice="en-US-AriaNeural",  --The default Azure voice to use (see https://learn.microsoft.com/azure/cognitive-services/speech-service/language-support).
+--         voice="en-US-AriaNeural",  --The default Azure voice to use (see https://learn.microsoft.com/azure/cognitive-services/speech-service/language-support).   
 --         key="Your access key", -- Your Azure access key.
 --         region="westeurope", -- The Azure region to use (see https://learn.microsoft.com/en-us/azure/cognitive-services/speech-service/regions).
 --       },
@@ -1655,16 +1674,16 @@ function MSRS:LoadConfigFile(Path,Filename)
   local filexsists =  UTILS.FileExists(pathandfile)
 
   if filexsists and not MSRS.ConfigLoaded then
-
+  
     env.info("FF reading config file")
-
+  
     -- Load global MSRS_Config
     assert(loadfile(path..file))()
-
+    
     if MSRS_Config then
-
+    
       local Self = self or MSRS  --#MSRS
-
+      
       Self.path = MSRS_Config.Path or "C:\\Program Files\\DCS-SimpleRadio-Standalone"
       Self.port = MSRS_Config.Port or 5002
       Self.backend = MSRS_Config.Backend or MSRS.Backend.SRSEXE
@@ -1685,13 +1704,13 @@ function MSRS:LoadConfigFile(Path,Filename)
           Self.poptions[provider]=MSRS_Config[provider]
         end
       end
-
+      
       Self.ConfigLoaded = true
-
+      
     end
     env.info("MSRS - Successfully loaded default configuration from disk!",false)
   end
-
+  
   if not filexsists then
     env.info("MSRS - Cannot find default configuration file!",false)
     return false