/* * openal.cpp * PIGE-OpenAL * * Created by Chad Armstrong on Mon Jul 29 2002. * Copyright (c) 2002 Edenwaith. All rights reserved. * * Remember to add these frameworks: GLUT, OpenAL, OpenGL * Otherwise, Undefined symbols: errors will result * * Several prebind errors will occur, but I was still able to compile * and run the program. * * A VERY important step to get this to work is to copy the .wav files into * the .app/Contents/MacOS folder. You need to use Terminal to do * this since the Finder windows interpret the .app as an executable * file instead. */ #include #include #include // function prototypes --------------------------------------------- void init(); void display(); void reshape(int w, int h); void keyboard(unsigned char key, int x, int y); void specialKeys(int key, int x, int y); // highly evil global variables --------------------------------------------- #define NUM_BUFFERS 3 #define NUM_SOURCES 3 #define NUM_ENVIRONMENTS 1 ALfloat listenerPos[]={0.0,0.0,4.0}; ALfloat listenerVel[]={0.0,0.0,0.0}; ALfloat listenerOri[]={0.0,0.0,1.0, 0.0,1.0,0.0}; ALfloat source0Pos[]={ -2.0, 0.0, 0.0}; ALfloat source0Vel[]={ 0.0, 0.0, 0.0}; ALfloat source1Pos[]={ 2.0, 0.0, 0.0}; ALfloat source1Vel[]={ 0.0, 0.0, 0.0}; ALfloat source2Pos[]={ 0.0, 0.0, -4.0}; ALfloat source2Vel[]={ 0.0, 0.0, 0.0}; ALuint buffer[NUM_BUFFERS]; ALuint source[NUM_SOURCES]; ALuint environment[NUM_ENVIRONMENTS]; int GLwin; ALsizei size,freq; ALenum format; ALvoid *data; int ch; // =================================================================== // void main(int argc, char** argv) // =================================================================== int main(int argc, char** argv) //finaly the main function { //initialise glut glutInit(&argc, argv) ; glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH) ; glutInitWindowSize(400,400) ; //initialise openAL alutInit(&argc, argv) ; GLwin = glutCreateWindow("PIGE - OpenAL Example") ; init() ; glutDisplayFunc(display) ; glutKeyboardFunc(keyboard) ; glutSpecialFunc(specialKeys); glutReshapeFunc(reshape) ; glutMainLoop() ; return 0; } // =================================================================== // void init() // =================================================================== void init(void) { alutInit(0, NULL); alListenerfv(AL_POSITION,listenerPos); alListenerfv(AL_VELOCITY,listenerVel); alListenerfv(AL_ORIENTATION,listenerOri); alGetError(); // clear any error messages if(alGetError() != AL_NO_ERROR) { printf("- Error creating buffers !!\n"); exit(1); } else { printf("init() - No errors yet."); } // Generate buffers, or else no sound will happen! alGenBuffers(NUM_BUFFERS, buffer); alutLoadWAVFile("c.wav",&format,&data,&size,&freq); alBufferData(buffer[0],format,data,size,freq); alutUnloadWAV(format,data,size,freq); alutLoadWAVFile("b.wav",&format,&data,&size,&freq); alBufferData(buffer[1],format,data,size,freq); alutUnloadWAV(format,data,size,freq); alutLoadWAVFile("a.wav",&format,&data,&size,&freq); alBufferData(buffer[2],format,data,size,freq); alutUnloadWAV(format,data,size,freq); alGetError(); /* clear error */ alGenSources(NUM_SOURCES, source); if(alGetError() != AL_NO_ERROR) { printf("- Error creating sources !!\n"); exit(2); } else { printf("init - no errors after alGenSources\n"); } alSourcef(source[0],AL_PITCH,1.0f); alSourcef(source[0],AL_GAIN,1.0f); alSourcefv(source[0],AL_POSITION,source0Pos); alSourcefv(source[0],AL_VELOCITY,source0Vel); alSourcei(source[0],AL_BUFFER,buffer[0]); alSourcei(source[0],AL_LOOPING,AL_TRUE); alSourcef(source[1],AL_PITCH,1.0f); alSourcef(source[1],AL_GAIN,1.0f); alSourcefv(source[1],AL_POSITION,source1Pos); alSourcefv(source[1],AL_VELOCITY,source1Vel); alSourcei(source[1],AL_BUFFER,buffer[1]); alSourcei(source[1],AL_LOOPING,AL_TRUE); alSourcef(source[2],AL_PITCH,1.0f); alSourcef(source[2],AL_GAIN,1.0f); alSourcefv(source[2],AL_POSITION,source2Pos); alSourcefv(source[2],AL_VELOCITY,source2Vel); alSourcei(source[2],AL_BUFFER,buffer[2]); alSourcei(source[2],AL_LOOPING,AL_TRUE); } // =================================================================== // void display() // =================================================================== void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ; glPushMatrix() ; glRotatef(20.0,1.0,1.0,0.0) ; glPushMatrix() ; glTranslatef(source0Pos[0],source0Pos[1],source0Pos[2]) ; glColor3f(1.0,0.0,0.0) ; glutWireCube(0.5) ; glPopMatrix() ; glPushMatrix() ; glTranslatef(source2Pos[0],source2Pos[1],source2Pos[2]) ; glColor3f(0.0,0.0,1.0) ; glutWireCube(0.5) ; glPopMatrix() ; glPushMatrix() ; glTranslatef(source1Pos[0],source0Pos[1],source0Pos[2]) ; glColor3f(0.0,1.0,0.0) ; glutWireCube(0.5) ; glPopMatrix() ; //the listener glPushMatrix() ; glTranslatef(listenerPos[0],listenerPos[1],listenerPos[2]) ; glColor3f(1.0,1.0,1.0) ; glutWireCube(0.5) ; glPopMatrix() ; glPopMatrix() ; glutSwapBuffers() ; } // =================================================================== // void reshape(int w, int h) // =================================================================== void reshape(int w, int h) // the reshape function { glViewport(0,0,(GLsizei)w,(GLsizei)h) ; glMatrixMode(GL_PROJECTION) ; glLoadIdentity() ; gluPerspective(60.0,(GLfloat)w/(GLfloat)h,1.0,30.0) ; glMatrixMode(GL_MODELVIEW) ; glLoadIdentity() ; glTranslatef(0.0,0.0,-6.6) ; } // =================================================================== // void keyboard(int key, int x, int y) // =================================================================== void keyboard(unsigned char key, int x, int y) { switch(key) { case '1': alSourcePlay(source[0]); printf("1\n"); break; case '2': alSourcePlay(source[1]); printf("2\n"); break; case '3': alSourcePlay(source[2]); printf("3\n"); break; case '4': alSourceStop(source[0]); printf("4\n"); break; case '5': alSourceStop(source[1]); printf("5\n"); break; case '6': alSourceStop(source[2]); printf("6\n"); break; case 'a': case 'A': listenerPos[0] -= 0.1 ; alListenerfv(AL_POSITION,listenerPos); break ; case 's': case 'S': listenerPos[0] += 0.1 ; alListenerfv(AL_POSITION,listenerPos); break ; case 'q': case 'Q': listenerPos[2] -= 0.1 ; alListenerfv(AL_POSITION,listenerPos); break ; case 'z': case 'Z': listenerPos[2] += 0.1 ; alListenerfv(AL_POSITION,listenerPos); break ; case 27: alSourceStop(source[2]); alSourceStop(source[1]); alSourceStop(source[0]); alutExit(); glutDestroyWindow(GLwin) ; exit(0) ; break ; default: break; } glutPostRedisplay() ; } // =================================================================== // void specialKeys(int key, int x, int y) // =================================================================== void specialKeys(int key, int x, int y) { switch(key) { case GLUT_KEY_RIGHT: listenerPos[0] += 0.1 ; alListenerfv(AL_POSITION,listenerPos); glutPostRedisplay() ; break; case GLUT_KEY_LEFT: listenerPos[0] -= 0.1 ; alListenerfv(AL_POSITION,listenerPos); glutPostRedisplay() ; break; case GLUT_KEY_UP: listenerPos[2] -= 0.1 ; alListenerfv(AL_POSITION,listenerPos); glutPostRedisplay() ; break; case GLUT_KEY_DOWN: listenerPos[2] += 0.1 ; alListenerfv(AL_POSITION,listenerPos); glutPostRedisplay() ; break; } }