Techniki multimedialne lab5

// This example will show how to use sound effects such as echo, reverb and distortion.
// irrKlang supports the effects Chorus, Compressor, Distortion, Echo, Flanger
// Gargle, 3DL2Reverb, ParamEq and WavesReverb.

// Lets start: include the irrKlang headers and other input/output stuff
// needed to print and get user input from the console. And as exlained
// in the first tutorial, we use the namespace irr and audio and
// link to the irrKlang.dll file.
#if defined(WIN32)
    #include <conio.h>
#else
    #include "../common/conio.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <irrKlang.h>
using namespace irrklang;

#pragma comment(lib, "irrKlang.lib") // link with irrKlang.dll


// Now let's start with the irrKlang 3D sound engine example 05,
// demonstrating sound effects. Simply startup the engine using
// using createIrrKlangDevice() with default options/parameters.
int main(int argc, const char** argv)
{

    ik_f32 a=8, b=-9, c=7;

    // start the sound engine with default parameters
    ISoundEngine* engine = createIrrKlangDevice();

    if (!engine)
        return 0; // error starting up the engine

    // we play a .xm file as music here. Note that the last parameter
    // named 'enableSoundEffects' has been set to 'true' here. If this
    // is not done, sound effects cannot be used with this sound.
    // After this, we print some help text and start a loop which reads
    // user keyboard input.

    const char* filename = "../../media/MF-W-90.XM";

    #ifdef __BIG_ENDIAN__
        filename = "../../media/ophelia.mp3"; // no xm playback on power pcs currently
    #endif

    ISound* music = engine->play2D(filename,
        true, false, true, ESM_AUTO_DETECT, true);

    // Print some help text and start the display loop

    printf("\nSound effects example. Keys:\n");
    printf("\nESCAPE: quit\n");
    printf("w: enable/disable waves reverb\n");
    printf("d: enable/disable distortion\n");
    printf("e: enable/disable echo\n");
    printf("f: enable/disable chorus\n");
    printf("r: enable/disable flanger\n");
    printf("t: enable/disable gargle\n");
    printf("y: enable/disable compressor\n");
    printf("a: disable all effects\n");

    while(true) // endless loop until user exits
    {
        int key = getch();

        if (key == 27)
            break; // user pressed ESCAPE key
        else
        {
            // user maybe pressed an effects key,
            // now enable or disable a sound effect.

            // We get a pointer to the ISoundEffectControl interface,
            // but this only exists if the sound driver supports sound effects
            // and if the sound was started setting the 'enableSoundeffects' flag
            // to 'true' as we did above. This pointer is only valid as long as
            // we don't call music->drop() and delete the music with this.

            ISoundEffectControl* fx = 0;
            if (music)
                fx = music->getSoundEffectControl();

            if (!fx)
            {
                // some sound devices do not support sound effects.
                printf("This device or sound does not support sound effects.\n");
                continue;
            }

            // here we disable or enable the sound effects of the music depending
            // on what key the user pressed. Note that every enableXXXSoundEffect()
            // method also accepts a lot of parameters, so it is easily possible
            // to influence the details of the effect. If the sound effect is
            // already active, it is also possible to simply call the
            // enableXXXSoundEffect() method again to just change the effect parameters,
            // although we aren't doing this here.

            if (key < 'a') // make key lower
                key += 'a' - 'A';



            switch(key)
            {
            case 'd':
                if (fx->isDistortionSoundEffectEnabled())
                    fx->disableDistortionSoundEffect();
                else
                    fx->enableDistortionSoundEffect();
                break;

            case 'e':
                if (fx->isEchoSoundEffectEnabled())
                    fx->disableEchoSoundEffect();
                else
                    fx->enableEchoSoundEffect();
                break;

            case 'w':
                if (fx->isWavesReverbSoundEffectEnabled())
                    fx->disableWavesReverbSoundEffect();
                else
                    fx->enableWavesReverbSoundEffect();
                break;
            case 'f':
                if(fx->isChorusSoundEffectEnabled())
                    fx->disableChorusSoundEffect();
                else
                    fx->enableChorusSoundEffect();
                break;
            case 'r':
                if(fx->isFlangerSoundEffectEnabled())
                    fx->disableFlangerSoundEffect();
                else
                    fx->enableFlangerSoundEffect();
                break;
            case 't':
                if(fx->isGargleSoundEffectEnabled())
                    fx->disableGargleSoundEffect();
                else
                    fx->enableGargleSoundEffect();
                break;
            case 'y':
                if(fx->isCompressorSoundEffectEnabled())
                    fx->disableCompressorSoundEffect();
                else
                    fx->enableCompressorSoundEffect();
                break;
            case 'o':
                a+=1;
                fx->enableParamEqSoundEffect(300,36,a);
                break;
            case 'l':
                a-=1;
                fx->enableParamEqSoundEffect(300,36,a);
                break;
            case 'i':
                b+=1;
                fx->enableParamEqSoundEffect(1046.5,24,b);
                break;
            case 'k':
                b-=1;
                fx->enableParamEqSoundEffect(1046.5,24,b);
                break;
            case 'u':
                c+=1;
                fx->enableParamEqSoundEffect(8372,36,c);
                break;
            case 'j':
                c-=1;
                fx->enableParamEqSoundEffect(8372,36,c);
                break;
            case 'a':
                fx->disableAllEffects();
                break;
            }
        }
    }
    // don't forget to release the resources

    if (music)
        music->drop(); // release music stream.

    engine->drop(); // delete Engine

    return 0;
}