OpenSL ES 查询设备支持的SL Profiles

opensl es 提供了三种类型：分别是 SL_PROFILES_PHONE(手机)；SL_PROFILES_MUSIC(音乐); SL_PROFILES_GAME (游戏)。

如果你使用的手机的开发商使用了OpenSL ES 的话，会有一个类似于上面的sl配置。如果是手机的话，一般会是SL_PROFILES_PHONE 在android较低的版本下也就意味着某些Opensl es 的功能不可用。

下面是查询代码：

　　SLObjectItf    _engineObject;
    SLresult    result;
    result = slCreateEngine(&_engineObject, 0, NULL, 0, NULL, NULL);
    assert(SL_RESULT_SUCCESS == result);

    result = (*_engineObject)->Realize(_engineObject, SL_BOOLEAN_FALSE);
    assert(SL_RESULT_SUCCESS == result);

    SLEngineCapabilitiesItf capabilities;
    SLuint16 profilesSupported;        
    result = (*_engineObject)->GetInterface(_engineObject, SL_IID_ENGINECAPABILITIES, &capabilities);
    assert(SL_RESULT_SUCCESS == result);
    result = (*capabilities)->QuerySupportedProfiles (capabilities, &profilesSupported);
    assert(SL_RESULT_SUCCESS == result);
    
    if (profilesSupported & SL_PROFILES_PHONE)
    {
        //手机
         LOGI("SL_PROFILES_PHONE");
    }        
    if (profilesSupported & SL_PROFILES_MUSIC)
    {
        //音乐
         LOGI("SL_PROFILES_MUSIC");
    }
    if (profilesSupported & SL_PROFILES_GAME)
    {
        //游戏
         LOGI("SL_PROFILES_GAME");
     }

备注：可能有些设备获取不了引擎功能接口 SLEngineCapabilitiesItf;