Activating speakerphone on Windows Smartphone

Activating speakerphone on Windows Smartphone

• BobbyVee

  Then I just ran out of luck. I'm working with a Smartphone 2003 so it won't work. The key isn't even present in the registry.. and the IOCTLs for my specific device are not easy to come by. Aight, thank's for your help, I'm about to resign on this one although it's extremly annoying not to be able to fix this issue.

  
  
  

• Andrei Gradinari

  I tried changing the speaker value in registry on WM5 SP, but it did not work. speaker value is changing and even menu for Speaker on/off is also changing however, speaker is not tuning on or off.

  
  
  

• Jean-Michel Bezeau

  Im not 100% sure this will work, but I suspect the simpliest way to do this is to switch the profile. The speaker phone is just a profile [HKEY_CURRENT_USER\ControlPanel\Profiles]

  struct __declspec(uuid("B7A5E609-3E46-442d-8D32-65926EDA6795")) ProfilesApp;

  MIDL_INTERFACE("F13D0964-E2DA-4bba-BF1A-EED82BB948D3")
  ITPCProfiles : public IUnknown
  {
  public:
  virtual HRESULT STDMETHODCALLTYPE SetActiveProfile(
  LPCWSTR wszProfile,
  HWND hwndOwner,
  BOOL bHideOwnerBeforeSet) = 0;
  
  };

  
  ITPCProfiles* pProfiles = NULL;
  
  HRESULT hr = CoCreateInstance(__uuidof(ProfilesApp), NULL, CLSCTX_INPROC_SERVER, __uuidof(ITPCProfiles), (LPVOID*)&pProfiles);
  
  if(SUCCEEDED(hr) && pProfiles != NULL) {

  // where ProfileName comes from the reg key

  // HKEY_CURRENT_USER\ControlPanel\Profiles

  hr = pProfiles->SetActiveProfile(ProfileName, NULL, FALSE);
  pProfiles->Release();
  pProfiles = NULL;
  }
  

  
  

• Ken Mcferren

  Great idea!

  Unfortunatelly that didn't work either. It really did change the profile to 'Speakerphone' but nothing else happened. I broadcasted a WM_WININICHANGE but still nothing. The thing is that the Speakerphone profile is present but can't be selected by the user. However, after the speakerphone is active (by pressent the hang up button) the check marker is present next to the Speakerphone item in the profiles menu.

  Back to the lab...

  Interesting piece of code by the way. I can't find any documentation about that interface!

  Any other suggestions

  Regards

  /Pierre

  
  
  

• Makemagic

  How about trying a WM_SETTINGSCHANGE message after you set the profile

  PostMessage( HWND_BROADCAST, WM_SETTINGCHANGE, 0, 0 );

   or how about trying the RIL interface.

  // Selects the type of audio device currently in use (either. Handset, Headset, Speakerphone, or Carkit)

  HRESULT RIL_SetAudioDevices(
      HRIL hRil,                                  // @parm handle to RIL instance returned by <f RIL_Initialize>
      const RILAUDIODEVICEINFO* lpAudioDeviceInfo // @parm audio devices to set
  );

   

   

   

  
  

• zoki977

  WM_SETTINGSCHANGE made no difference.

  Moving on to RIL...

  I successfully initialized the RIL and called RIL_SetAudioDevices:

  RILAUDIODEVICEINFO audioDeviceInfo;

  audioDeviceInfo.cbSize = sizeof(RILAUDIODEVICEINFO);

  audioDeviceInfo.dwParams = RIL_PARAM_ADI_ALL;

  audioDeviceInfo.dwRxDevice = RIL_AUDIO_SPEAKERPHONE;

  audioDeviceInfo.dwTxDevice = RIL_AUDIO_SPEAKERPHONE;

  hr = pRIL_SetAudioDevices(hRil, &audioDeviceInfo);

  The callback reported success! But guess what, the speakerphone was not activated. I read a whitepaper from Intel that stated that a call to waveOutMessage should be carried out after RIL_SetAudioDevices. But since that function is vendor specific I have no idea on what to pass as parameters.

  I also tried a different approach. RIL_GetSerialPortHandle returns a virtual serial port handle used for data communication according to the header file I snatched off the internet (Unfortunatelly I have no copy of platform builder). I tried WriteFile on the handle passing a basic AT command and the write succeeded. ReadFile returned EOF though.. So I guess that handle is to be used with DeviceIoControl only. So now I'm stuck again having no idea what control code to pass. Another potential useful function is RIL_DevSpecific but the same problem here. What to pass as parameters

  So... I ask you again, any other suggestions Your suggestions are very appreciated!

  
  
  

• jkristia

  I have one last suggestion, assumming this is windows mobile 2005.

  After you have set the profile to "Speakerphone", set the notification hardware key.

  From the help file :-

  In Windows Mobile Version 5.0, there are two ways to notify the Shell or a generic client of a device state change:

• Using the HKEY_LOCAL_MACHINE\System\State\Hardware registry key
• and using IOCTLs for the headset, speakerphone and car kit profiles.

So try change the speaker to 1 in the reg key HKEY_LOCAL_MACHINE\System\State\Hardware, this should notify all interested apps that the profile has changed.