C++ System::setReverbProperties方法代码示例

int FMOD_Main()
{
    FMOD::Channel *channel = NULL;
    unsigned int samplesRecorded = 0;
    unsigned int samplesPlayed = 0;
    bool dspEnabled = false;

    void *extraDriverData = NULL;
    Common_Init(&extraDriverData);

    /*
        Create a System object and initialize.
    */
    FMOD::System *system = NULL;
    FMOD_RESULT result = FMOD::System_Create(&system);
    ERRCHECK(result);

    unsigned int version = 0;
    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        Common_Fatal("FMOD lib version %08x doesn't match header version %08x", version, FMOD_VERSION);
    }

    result = system->init(100, FMOD_INIT_NORMAL, extraDriverData);
    ERRCHECK(result);

    int numDrivers = 0;
    result = system->getRecordNumDrivers(NULL, &numDrivers);
    ERRCHECK(result);

    if (numDrivers == 0)
    {
        Common_Fatal("No recording devices found/plugged in!  Aborting.");
    }

    /*
        Determine latency in samples.
    */
    int nativeRate = 0;
    int nativeChannels = 0;
    result = system->getRecordDriverInfo(DEVICE_INDEX, NULL, 0, NULL, &nativeRate, NULL, &nativeChannels, NULL);
    ERRCHECK(result);

    unsigned int driftThreshold = (nativeRate * DRIFT_MS) / 1000;       /* The point where we start compensating for drift */
    unsigned int desiredLatency = (nativeRate * LATENCY_MS) / 1000;     /* User specified latency */
    unsigned int adjustedLatency = desiredLatency;                      /* User specified latency adjusted for driver update granularity */
    int actualLatency = desiredLatency;                                 /* Latency measured once playback begins (smoothened for jitter) */

    /*
        Create user sound to record into, then start recording.
    */
    FMOD_CREATESOUNDEXINFO exinfo = {0};
    exinfo.cbsize           = sizeof(FMOD_CREATESOUNDEXINFO);
    exinfo.numchannels      = nativeChannels;
    exinfo.format           = FMOD_SOUND_FORMAT_PCM16;
    exinfo.defaultfrequency = nativeRate;
    exinfo.length           = nativeRate * sizeof(short) * nativeChannels; /* 1 second buffer, size here doesn't change latency */
    
    FMOD::Sound *sound = NULL;
    result = system->createSound(0, FMOD_LOOP_NORMAL | FMOD_OPENUSER, &exinfo, &sound);
    ERRCHECK(result);

    result = system->recordStart(DEVICE_INDEX, sound, true);
    ERRCHECK(result);

    unsigned int soundLength = 0;
    result = sound->getLength(&soundLength, FMOD_TIMEUNIT_PCM);
    ERRCHECK(result);

    /*
        Main loop
    */
    do
    {
        Common_Update();

        /*
            Add a DSP effect -- just for fun
        */
        if (Common_BtnPress(BTN_ACTION1))
        {
            FMOD_REVERB_PROPERTIES propOn = FMOD_PRESET_CONCERTHALL;
            FMOD_REVERB_PROPERTIES propOff = FMOD_PRESET_OFF;

            dspEnabled = !dspEnabled;

            result = system->setReverbProperties(0, dspEnabled ? &propOn : &propOff);
            ERRCHECK(result);
        }

        result = system->update();
        ERRCHECK(result);
       
        /*
            Determine how much has been recorded since we last checked
        */
        unsigned int recordPos = 0;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        Create a DSP effect to play with.
    */
    result = system->createDSPByType(FMOD_DSP_TYPE_FLANGE, &dsp);
    ERRCHECK(result);
    result = dsp->setParameter(FMOD_DSP_FLANGE_RATE, 4.0f);
    ERRCHECK(result);
    result = dsp->setBypass(true);   
    ERRCHECK(result);
    
    adjustedlatency = LATENCY;  /* This might change depending on record block size. */
    
    /*
        Main loop.
    */
    do
    {
        static unsigned int lastrecordpos = 0, samplesrecorded = 0;
        unsigned int recordpos = 0, recorddelta;
        
        key = 0;
        if (_kbhit())
        {
            key = _getch();
        }

        if (key == 'e' || key == 'E')
        {
            bool bypass;
            dsp->getBypass(&bypass);
            dsp->setBypass(!bypass);
            if (bypass)
            {
                FMOD_REVERB_PROPERTIES prop = FMOD_PRESET_CONCERTHALL;
                system->setReverbProperties(&prop);
            }
            else
            {
                FMOD_REVERB_PROPERTIES prop = FMOD_PRESET_OFF;
                system->setReverbProperties(&prop);
            }
            printf("\n\n *** TURN DSP EFFECT %s ** \n\n", bypass ? "ON" : "OFF");
        }
        
        system->getRecordPosition(0, &recordpos);
        ERRCHECK(result);

        recorddelta = recordpos >= lastrecordpos ? recordpos - lastrecordpos : recordpos + soundlength - lastrecordpos;
        samplesrecorded += recorddelta;

		if (samplesrecorded >= adjustedlatency && !channel)
		{
		    result = system->playSound(FMOD_CHANNEL_FREE, sound, 0, &channel);
            ERRCHECK(result);
            
            result = channel->addDSP(dsp, 0);
            ERRCHECK(result);
		}
				
        if (channel && recorddelta)
        {
            unsigned int playrecorddelta;
            unsigned int playpos = 0;
            int adjusting = 0;
            float smootheddelta;
            float dampratio = 0.97f;
            static unsigned int minrecorddelta = (unsigned int)-1;