static int swap_bytes(char *buffer, long samples, int channels, int bits)
{
long i = 0;
char byte1, *buffer1, *buffer2;
if(!byte_order()) return 0;
switch(bits) {
case 16:
buffer1 = buffer;
buffer2 = buffer + 1;
while(i < samples * channels * 2) {
byte1 = buffer2[i];
buffer2[i] = buffer1[i];
buffer1[i] = byte1;
i += 2;
}
break;
case 24:
buffer1 = buffer;
buffer2 = buffer + 2;
while(i < samples * channels * 3) {
byte1 = buffer2[i];
buffer2[i] = buffer1[i];
buffer1[i] = byte1;
i += 3;
}
break;
default: break;
}
return 0;
}
int main(int argc, char *argv[])
{
if(argc==1)
{
printf("You must enter function\n");
exit(1);
}
char *fn_name;
fn_name=argv[1];
if(strcmp(fn_name,"function1")==0) function1(); //basic pointer aritmetic
else if(strcmp(fn_name,"iscale")==0) iscale(--argc, ++argv); //generate E.T tables for N-notes to the octave (N<=24) ***NOTICE --argc and ++argv
else if(strcmp(fn_name,"expdecay")==0) expdecay(--argc, ++argv); //generate exponential attack or decay breakpoint data
else if(strcmp(fn_name,"sinetext")==0) sinetext(--argc, ++argv); //generate sinusoidal curve for use with GNUplot --> showcases use of enum
else if(strcmp(fn_name,"byte_order")==0) { if(byte_order()==0) printf("System is big-endian\n"); else printf("System is little-endian\n"); } //tells endian type of system
else if(strcmp(fn_name,"sf2float")==0) sf2float(--argc, ++argv); //convert soundfile to float format
else if(strcmp(fn_name,"sig_gen")==0) sig_gen(--argc, ++argv); //generate oscillation signal (sine, triangle, square, sawtooth up, sawtooth down)
else if(strcmp(fn_name,"osc_gen")==0) osc_gen(--argc, ++argv); //Oscillator Bank (Array of oscillators) for additive sythesis for the natural specturm of sound (classic square, trianlgle, saw_up, saw_down)
else if(strcmp(fn_name,"summation_function")==0) summation_function(--argc, ++argv); // summation for a^n (CS473 Quiz3)
else if(strcmp(fn_name,"secant_method")==0) secant_method(--argc, ++argv); // secant method implementation for CS357 Quiz3
else if(strcmp(fn_name,"oddSumTest")==0) oddSumTest(--argc, ++argv); // oddSum program for Rishi
else if(strcmp(fn_name,"pointerTest")==0) pointerTest();//pointer test for CS241
else if(strcmp(fn_name,"aQRec")==0) aQRec(); //tests for audioQueueRecorder
else
{
printf("Function not found\n");
exit(1);
}
return 0;
}
int
main (void) {
/*
* this program includes various and sundry tests for fundamental
* datatypes. it's a grab-bag of throwaway code, retained only in
* case of future problems
*/
int i, j;
v128_t x;
char *r =
"The Moving Finger writes; and, having writ,\n"
"Moves on: nor all thy Piety nor Wit\n"
"Shall lure it back to cancel half a Line,\n"
"Nor all thy Tears wash out a Word of it.";
char *s = "incomplet";
print_string(r);
print_string(s);
byte_order();
test_hex_string_funcs();
for (j=0; j < 128; j++) {
v128_set_to_zero(&x);
/* x.v32[0] = (1 << j); */
v128_set_bit(&x, j);
printf("%s\n", v128_bit_string(&x));
v128_clear_bit(&x, j);
printf("%s\n", v128_bit_string(&x));
}
printf("----------------------------------------------\n");
v128_set_to_zero(&x);
for (i=0; i < 128; i++) {
v128_set_bit(&x, i);
}
printf("%s\n", v128_bit_string(&x));
printf("----------------------------------------------\n");
v128_set_to_zero(&x);
v128_set_bit(&x, 0);
for (i=0; i < 128; i++) {
printf("%s\n", v128_bit_string(&x));
v128_right_shift(&x, 1);
}
printf("----------------------------------------------\n");
v128_set_to_zero(&x);
v128_set_bit(&x, 127);
for (i=0; i < 128; i++) {
printf("%s\n", v128_bit_string(&x));
v128_left_shift(&x, 1);
}
printf("----------------------------------------------\n");
for (i=0; i < 128; i++) {
v128_set_to_zero(&x);
v128_set_bit(&x, 127);
v128_left_shift(&x, i);
printf("%s\n", v128_bit_string(&x));
}
printf("----------------------------------------------\n");
v128_set_to_zero(&x);
for (i=0; i < 128; i+=2) {
v128_set_bit(&x, i);
}
printf("bit_string: { %s }\n", v128_bit_string(&x));
printf("get_bit: { ");
for (i=0; i < 128; i++) {
if (v128_get_bit(&x, i) == 1)
printf("1");
else
printf("0");
}
printf(" } \n");
test_bswap();
return 0;
}
