C++ DSP::setBypass方法代码示例

int main(int argc, char *argv[])
{
    FMOD::System       *system;
    FMOD::Sound        *sound;
    FMOD::Channel      *channel;
    FMOD::DSP          *mydsp;
    FMOD_RESULT         result;
    int                 key;
    unsigned int        version;
    float               pan = 0;

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

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

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(32, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    result = system->createSound("../media/drumloop.wav", FMOD_SOFTWARE | FMOD_LOOP_NORMAL, 0, &sound);
    ERRCHECK(result);

    printf("===============================================================================\n");
    printf("Custom DSP example. Copyright (c) Firelight Technologies 2004-2011.\n");
    printf("===============================================================================\n");
    printf("Press 'f' to activate, deactivate user filter\n");
    printf("Press 'Esc' to quit\n");
    printf("\n");

    result = system->playSound(FMOD_CHANNEL_FREE, sound, false, &channel);
    ERRCHECK(result);

    /*
        Create the DSP effects.
    */  
    { 
        FMOD_DSP_DESCRIPTION  dspdesc; 

        memset(&dspdesc, 0, sizeof(FMOD_DSP_DESCRIPTION)); 

        strcpy(dspdesc.name, "My first DSP unit"); 
        dspdesc.channels     = 0;                   // 0 = whatever comes in, else specify. 
        dspdesc.read         = myDSPCallback; 
        dspdesc.userdata     = (void *)0x12345678; 

        result = system->createDSP(&dspdesc, &mydsp); 
        ERRCHECK(result); 
    } 

    /*
        Inactive by default.
    */
    mydsp->setBypass(true);

    /*
        Main loop.
    */
    result = system->addDSP(mydsp, 0); 


    /*
        Main loop.
    */
    do
    {
        if (kbhit())
        {
            key = getch();

            switch (key)
            {
                case 'f' : 
                case 'F' : 
                {
                    static bool active = false;

                    mydsp->setBypass(active);

                    active = !active;
                    break;
                }
            }
        }

        system->update();

        Sleep(10);

    } while (key != 27);

//.........这里部分代码省略.........

void InitFmod(){
	cfmod(FMOD::System_Create(&fmodSystem));

	u32 version = 0;
	cfmod(fmodSystem->getVersion(&version));
	if(version < FMOD_VERSION){
		std::cerr 
			<< "FMOD version of at least " << FMOD_VERSION 
			<< " required. Version used " << version 
			<< std::endl;
		throw "FMOD Error";
	}

	cfmod(fmodSystem->init(100, FMOD_INIT_NORMAL, nullptr));

	FMOD::DSP* dsp;
	FMOD::DSP* compressor;

	{	FMOD_DSP_DESCRIPTION desc;
		memset(&desc, 0, sizeof(desc));

		// strncpy(desc.name, "Fuckyou", sizeof(desc.name));
		desc.numinputbuffers = 0;
		desc.numoutputbuffers = 1;
		desc.read = DSPCallback;
		desc.userdata = new DSPUserdata{/*sched, */0.0};

		cfmod(fmodSystem->createDSP(&desc, &dsp));
		cfmod(dsp->setChannelFormat(FMOD_CHANNELMASK_STEREO,2,FMOD_SPEAKERMODE_STEREO));
	}

	cfmod(fmodSystem->createDSPByType(FMOD_DSP_TYPE_COMPRESSOR, &compressor));

	cfmod(compressor->setParameterFloat(FMOD_DSP_COMPRESSOR_THRESHOLD, -13));
	cfmod(compressor->setParameterFloat(FMOD_DSP_COMPRESSOR_ATTACK, 1));
	cfmod(compressor->setBypass(false));
	cfmod(dsp->setBypass(false));

	FMOD::ChannelGroup* mastergroup;
	cfmod(fmodSystem->getMasterChannelGroup(&mastergroup));
	cfmod(mastergroup->addDSP(0, compressor));
	cfmod(fmodSystem->playDSP(dsp, mastergroup, false, &channel));
	cfmod(channel->setMode(FMOD_2D));
	cfmod(channel->setVolume(0.7f));

	FMOD::Reverb3D* reverb;
	cfmod(fmodSystem->createReverb3D(&reverb));

	// http://www.fmod.org/docs/content/generated/FMOD_REVERB_PROPERTIES.html

	FMOD_REVERB_PROPERTIES rprops = {
		.DecayTime			= 8000.0, //1500.0, /* Reverberation decay time in ms */
		.EarlyDelay			= 7.0, //7.0, /* Initial reflection delay time */
		.LateDelay			= 11.0, //11.0, /* Late reverberation delay time relative to initial reflection */
		.HFReference		= 5000.0, /* Reference high frequency (hz) */
		.HFDecayRatio		= 50.0, /* High-frequency to mid-frequency decay time ratio */
		.Diffusion			= 60.0, /* Value that controls the echo density in the late reverberation decay. */
		.Density			= 100.0, //100.0, /* Value that controls the modal density in the late reverberation decay */
		.LowShelfFrequency	= 250.0, /* Reference low frequency (hz) */
		.LowShelfGain		= 0.0, /* Relative room effect level at low frequencies */
		.HighCut			= 10000.0, /* Relative room effect level at high frequencies */
		.EarlyLateMix		= 50.0, /* Early reflections level relative to room effect */
		.WetLevel			= -12.0, //-6.0, /* Room effect level (at mid frequencies) */
	};

	cfmod(reverb->setProperties(&rprops));
}

int FMOD_Main()
{
    FMOD::System       *system;
    FMOD::Sound        *sound;
    FMOD::Channel      *channel;
    FMOD::DSP          *mydsp;
    FMOD::ChannelGroup *mastergroup;
    FMOD_RESULT         result;
    unsigned int        version;
    void               *extradriverdata = 0;

    Common_Init(&extradriverdata);

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

    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(32, FMOD_INIT_NORMAL, extradriverdata);
    ERRCHECK(result);

    result = system->createSound(Common_MediaPath("drumloop.wav"), FMOD_SOFTWARE | FMOD_LOOP_NORMAL, 0, &sound);
    ERRCHECK(result);

    result = system->playSound(sound, 0, false, &channel);
    ERRCHECK(result);

    /*
        Create the DSP effect.
    */  
    { 
        FMOD_DSP_DESCRIPTION dspdesc; 
        memset(&dspdesc, 0, sizeof(dspdesc));
        
        strncpy(dspdesc.name, "My first DSP unit", sizeof(dspdesc.name));
        dspdesc.version = 0x00010000;
        dspdesc.numinputbuffers = 1;
        dspdesc.numoutputbuffers = 1;
        dspdesc.read = myDSPCallback; 
        dspdesc.userdata = (void *)0x12345678; 

        result = system->createDSP(&dspdesc, &mydsp); 
        ERRCHECK(result); 
    } 

    /*
        Attach the DSP, inactive by default.
    */
    result = mydsp->setBypass(true);
    ERRCHECK(result);

    result = system->getMasterChannelGroup(&mastergroup);
    ERRCHECK(result);

    result = mastergroup->addDSP(0, mydsp, 0);
    ERRCHECK(result);

    /*
        Main loop.
    */
    do
    {
        bool bypass;

        Common_Update();

        result = mydsp->getBypass(&bypass);
        ERRCHECK(result);

        if (Common_BtnPress(BTN_ACTION1))
        {
            bypass = !bypass;
            
            result = mydsp->setBypass(bypass);
            ERRCHECK(result);
        }

        result = system->update();
        ERRCHECK(result);

        Common_Draw("==================================================");
        Common_Draw("Custom DSP Example.");
        Common_Draw("Copyright (c) Firelight Technologies 2004-2014.");
        Common_Draw("==================================================");
        Common_Draw("");
        Common_Draw("Press %s to toggle filter bypass", Common_BtnStr(BTN_ACTION1));
        Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));
        Common_Draw("");
        Common_Draw("Filter is %s", bypass ? "inactive" : "active");

        Common_Sleep(50);
//.........这里部分代码省略.........

int FMOD_Main()
{
    FMOD::System       *system        = 0;
    FMOD::Sound        *sound         = 0;
    FMOD::Channel      *channel       = 0;
    FMOD::ChannelGroup *mastergroup   = 0; 
    FMOD::DSP          *dsplowpass    = 0;
    FMOD::DSP          *dsphighpass   = 0;
    FMOD::DSP          *dspecho       = 0;
    FMOD::DSP          *dspflange     = 0;
    FMOD_RESULT         result;
    unsigned int        version;
    void               *extradriverdata = 0;

    Common_Init(&extradriverdata);

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

    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(32, FMOD_INIT_NORMAL, extradriverdata);
    ERRCHECK(result);

    result = system->getMasterChannelGroup(&mastergroup);
    ERRCHECK(result);

    result = system->createSound(Common_MediaPath("drumloop.wav"), FMOD_DEFAULT, 0, &sound);
    ERRCHECK(result);

    result = system->playSound(sound, 0, false, &channel);
    ERRCHECK(result);

    /*
        Create some effects to play with
    */
    result = system->createDSPByType(FMOD_DSP_TYPE_LOWPASS, &dsplowpass);
    ERRCHECK(result);
    result = system->createDSPByType(FMOD_DSP_TYPE_HIGHPASS, &dsphighpass);
    ERRCHECK(result);
    result = system->createDSPByType(FMOD_DSP_TYPE_ECHO, &dspecho);
    ERRCHECK(result);
    result = system->createDSPByType(FMOD_DSP_TYPE_FLANGE, &dspflange);
    ERRCHECK(result);

    /*
        Add them to the master channel group.  Each time an effect is added (to position 0) it pushes the others down the list.
    */
    result = mastergroup->addDSP(0, dsplowpass);
    ERRCHECK(result);
    result = mastergroup->addDSP(0, dsphighpass);
    ERRCHECK(result);
    result = mastergroup->addDSP(0, dspecho);
    ERRCHECK(result);
    result = mastergroup->addDSP(0, dspflange);
    ERRCHECK(result);

    /*
        By default, bypass all effects.  This means let the original signal go through without processing.
        It will sound 'dry' until effects are enabled by the user.
    */
    result = dsplowpass->setBypass(true);
    ERRCHECK(result);
    result = dsphighpass->setBypass(true);
    ERRCHECK(result);
    result = dspecho->setBypass(true);
    ERRCHECK(result);
    result = dspflange->setBypass(true);
    ERRCHECK(result);

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

        if (Common_BtnPress(BTN_MORE))
        {
            bool paused;

            result = channel->getPaused(&paused);
            ERRCHECK(result);

            paused = !paused;

            result = channel->setPaused(paused);
            ERRCHECK(result);
        }

        if (Common_BtnPress(BTN_ACTION1))
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    
    result = system->createSound(0, FMOD_2D | FMOD_SOFTWARE | FMOD_LOOP_NORMAL | FMOD_OPENUSER, &exinfo, &sound);
    ERRCHECK(result);

    printf("========================================================================\n");
    printf("Record with realtime playback example.\n");
    printf("Copyright (c) Firelight Technologies 2004-2014.\n");
    printf("\n");
    printf("Try #define LOWLATENCY to reduce latency for more modern machines!\n");
    printf("========================================================================\n");
    printf("\n");
    printf("Press a key to start recording.  Playback will start %d samples (%d ms) later.\n", LATENCY, LATENCY * 1000 / RECORDRATE);
    printf("\n");

    _getch();

    printf("Press 'E' to toggle an effect on/off.\n");
    printf("Press 'Esc' to quit\n");
    printf("\n");

    result = system->recordStart(0, sound, true);
    ERRCHECK(result);

    result = sound->getLength(&soundlength, FMOD_TIMEUNIT_PCM);
    ERRCHECK(result);

    /*
        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);