C++ (Cpp) System::createDSP Examples

Example #1

File: main.cpp Project: EEmmanuel7/leapmotion-irrlicht

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);

    printf("\n");

    /*
        Shut down
    */
    result = sound->release();
    ERRCHECK(result);

    result = mydsp->release();
    ERRCHECK(result);

    result = system->close();
    ERRCHECK(result);
    result = system->release();
    ERRCHECK(result);

    return 0;
}

Example #2

File: dsp_custom.cpp Project: Silentpope/transistor-breach

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);
    } while (!Common_BtnPress(BTN_QUIT));

    /*
        Shut down
    */
    result = sound->release();
    ERRCHECK(result);

    result = mastergroup->removeDSP(mydsp);
    ERRCHECK(result);
    result = mydsp->release();
    ERRCHECK(result);

    result = system->close();
    ERRCHECK(result);
    result = system->release();
    ERRCHECK(result);

    Common_Close();

    return 0;
}