Windows Speech SAPI：如何列出语音属性？

我用过这个堆栈溢出答案 https://stackoverflow.com/questions/17675177/c-and-microsoft-sapi-5-how-to-list-all-available-voices-and-select-a-voice迭代所有已安装的 Windows 文本转语音语音，但我遇到了困难提取每一个的属性。例如性别、语言、姓名等

我假设有一种方法可以提取可用于查找声音的属性，例如gender=female;language=409

if ( FAILED( ::CoInitialize( NULL ) ) )
    return 1;

HRESULT hr = S_OK;

CComPtr<ISpVoice> cpVoice; //Will send data to ISpStream
CComPtr<ISpStream> cpStream; //Will contain IStream
CComPtr<IStream> cpBaseStream; //raw data
ISpObjectToken* cpToken( NULL ); //Will set voice characteristics

GUID guidFormat;
WAVEFORMATEX* pWavFormatEx = nullptr;

hr = cpVoice.CoCreateInstance( CLSID_SpVoice );

CComPtr<ISpObjectTokenCategory> cpSpCategory = NULL;
if ( SUCCEEDED( hr = SpGetCategoryFromId( SPCAT_VOICES, &cpSpCategory ) ) )
{
    CComPtr<IEnumSpObjectTokens> cpSpEnumTokens;
    if ( SUCCEEDED( hr = cpSpCategory->EnumTokens( NULL, NULL, &cpSpEnumTokens ) ) )
    {
        CComPtr<ISpObjectToken> pSpTok;
        while ( SUCCEEDED( hr = cpSpEnumTokens->Next( 1, &pSpTok, NULL ) ) )
        {
            // do something with the token here; for example, set the voice
            //pVoice->SetVoice( pSpTok, FALSE );
            WCHAR *pID = NULL;
            hr = pSpTok->GetId( &pID );
            // This succeeds, pID is "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_EN-US_DAVID_11.0" 
            WCHAR *pName = NULL;
            pSpTok->GetStringValue( L"name", &pName );
            // pName, pGender and pLanguage are all null
            WCHAR *pGender = NULL;
            pSpTok->GetStringValue( L"gender", &pGender );
            WCHAR *pLanguage = NULL;
            pSpTok->GetStringValue( L"language", &pLanguage );
            LONG index = 0;
            WCHAR *key = NULL;
            while ( SUCCEEDED( hr = pSpTok->EnumKeys( index, &key ) ) )
            {
                // Gets some elements
                WCHAR* pValue = NULL;
                pSpTok->GetStringValue( key, &pValue );
                // Loops once, key value is "Attributes"
                index++;
            }
            index = 0;
            while ( SUCCEEDED( hr = pSpTok->EnumValues( index, &key ) ) )
            {
                // Loops many times, but none of these have what I need
                WCHAR* pValue = NULL;
                pSpTok->GetStringValue( key, &pValue );
                index++;
            }
            // NOTE:  IEnumSpObjectTokens::Next will *overwrite* the pointer; must manually release
            pSpTok.Release();
        }
    }
}

我是 Windows C++ 开发新手，抱歉。

获得代表语音的 ISpObjectToken 后，检索其“Attributes”子项，然后查询子项的值：

CComPtr<ISpObjectToken> pSpTok;
while (cpSpEnumTokens->Next(1, &pSpTok, NULL) == S_OK)
{
    CComPtr<ISpDataKey> cpSpAttributesKey;
    if (SUCCEEDED(hr = pSpTok->OpenKey(L"Attributes", &cpSpAttributesKey)))
    {
        CSpDynamicString dstrName;
        cpSpAttributesKey->GetStringValue(L"Name", &dstrName);
        CSpDynamicString dstrGender;
        cpSpAttributesKey->GetStringValue(L"Gender", &dstrGender);
        // dstrName: Microsoft David Desktop
        // dstrGender: Male
    }
    pSpTok.Release();
}

我使用 CSpDynamicString 以便自动释放为字符串分配的内存。您可以选择使用WCHAR*相反，但随后您将负责自己调用 CoTaskMemFree。

我还修复了您原始代码中的另一个错误：结果cpSpEnumTokens->Next应该与 S_OK 进行比较，而不是传递给 SUCCEEDED，因为 Next 返回 S_FALSE 来指示枚举已完成。 S_FALSE 是成功结果，因此使用 SUCCEEDED 会导致无限循环。

参考： 对象令牌和注册表设置白皮书 https://learn.microsoft.com/en-us/previous-versions/windows/desktop/ms717036(v=vs.85)- §5.3 检查令牌的底层密钥