C++ SAPI5设置输出设备（声卡）_linux下使用microsoft sapi5进行输出声音

微软官方例子，枚举所有输出设备，并且设置给ISpVoice：
// Declare local identifiers:
HRESULT                        hr = S_OK;
CComPtr<ISpObjectToken>        cpAudioOutToken;
CComPtr<IEnumSpObjectTokens>   cpEnum;
CComPtr<ISpVoice>              cpVoice;
ULONG                          ulCount = 0;
 
// Create the SAPI voice.
hr = cpVoice.CoCreateInstance(CLSID_SpVoice);
 
if (SUCCEEDED (hr))
{
   // Enumerate the available audio output devices.
   hr = SpEnumTokens( SPCAT_AUDIOOUT, NULL, NULL, &cpEnum; );
}
 
if (SUCCEEDED (hr))
{
   // Get the number of audio output devices.
   hr = cpEnum->GetCount( &ulCount; );
}
 
// Obtain a list of available audio output tokens,
// set the output to the token, and call Speak.
while (SUCCEEDED(hr) && ulCount--)
{
   if (SUCCEEDED (hr))
   {
      hr = cpEnum->Next( 1, &cpAudioOutToken;, NULL );
   }
 
   if (SUCCEEDED (hr))
   {
      hr = cpVoice->SetOutput( cpAudioOutToken, TRUE );
   }
 
   if (SUCCEEDED (hr))
   {
      hr = cpVoice->Speak( L"How are you?", SPF_DEFAULT, NULL );
   }
}
 
if (SUCCEEDED (hr))
{
   // Do more stuff here.
}

把输出设备显示到ComboBox里：
HRESULT hr = SpInitTokenComboBox( hWndComboAudioOut , SPCAT_AUDIOOUT);
VERIFY(SUCCEEDED(hr))
 
CComPtr<ISpVoice> cpVoice;
cpVoice.CoCreateInstance( CLSID_SpVoice ); 
VERIFY(SUCCEEDED(hr))
ISpObjectToken *pTokenAudioOut=nullptr;
VERIFY(SUCCEEDED(new_voice.cpVoice->GetOutputObjectToken(&pTokenAudioOut)));
CSpDynamicString dstrDesc;
VERIFY(SUCCEEDED(SpGetDescription(pTokenAudioOut, &dstrDesc)));
::SendMessageW(hWndComboAudioOut, CB_SELECTSTRING, 0, (LPARAM)dstrDesc.m_psz);
 
 
 
从ComboBox里的选中文字设置TTS输出设备
ISpObjectToken* pToken = SpGetCurSelComboBoxToken( hWndCombo ); 
ISpVoice->SetOutPut(pToken）直接使用
 
 
还可以通过Token获得ID
WCHAR wszTolenName[256] = L"";
WCHAR *pWsz = NULL ;
pToken->GetId( &pWsz ) ;
 
 
//再把ID还原成Token
CComPtr<IEnumSpObjectTokens> cpEnum;
CStringW strIdW( pWsz ) ;
CComPtr<ISpObjectToken> cpVoiceToken
HRESULT hr = SpGetTokenFromId(strIdW, &cpVoiceToken);
ISpVoice->SetOutPut(cpVoiceToken）直接使用