Shifts one channel of a 16-bit stereo audio file (for I/Q phase correction)

stereo_phaseshift.c

#!/usr/bin/tcc -run
#include <stdio.h>
#include <stdlib.h>
//dependencies: sudo apt-get install tcc
//usage: cat sine.raw | ./stereo_phaseshift.c > sine2.raw
//d gives the number of samples to shift:
int d=5, i;

short gs() 
{
	int x,y; 
	if(((x=getchar())==EOF)||(y=getchar())==EOF) abort(); 
	return (x&0xff)|((y&0xff)<<8);
}
void ps(short x){putchar(x&0xff);putchar(x>>8);} 
int main()
{
	short*left=malloc(d*sizeof(short)*2*2);
	short*right=left+d*sizeof(short)*2; 
	for(;;)
	{ 
		memmove(left,left+d,d*sizeof(short));
		memmove(right,right+d,d*sizeof(short)); 
		for(i=0;i<d;i++) {left[i+d]=gs();right[i+d]=gs();} 
		for(i=0;i<d;i++) {ps(left[i+d]);ps(right[i]);}
	}
}

The result should look like this:

http://ha5kfu.sch.bme.hu/up/levelezes/phaseshift.png