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26 résultats

audio.cpp

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  • swap.c 1,29 Kio
    #include "swap.h"
    
        
    short shortsw(short sh)
    {
        swap2 s1;
    	swap2 s2;
        
    	s1.ival = sh;
    
        if (bigendian)
        {
            s2.c[1] = s1.c[1];
            s2.c[0] = s1.c[0];
        }
        else
        {
            s2.c[0] = s1.c[1];
            s2.c[1] = s1.c[0];
        }
        return s2.ival;
    }
    
    short getshortsw(char *c)
    {
        swap2 s;
    
        if (bigendian)
          {
            s.c[1] = c[1];
            s.c[0] = c[0];
          }
        else
          {
            s.c[0] = c[1];
            s.c[1] = c[0];
          }
        
        return s.ival;
    }
     
    long getintsw(char *c)
    {
        swap4 s;
    
        if (bigendian)
          {
            s.c[0] = c[0];
            s.c[1] = c[1];
            s.c[2] = c[2];
            s.c[3] = c[3];
          }
        else
          {
            s.c[0] = c[3];
            s.c[1] = c[2];
            s.c[2] = c[1];
            s.c[3] = c[0];
          }
        return s.ival;
      }
    
    long intsw(long ii)
    {
        swap4 s1,s2;
        s1.ival = ii;
    
        if (bigendian)
          {
            s2.c[0] = s1.c[0];
            s2.c[1] = s1.c[1];
            s2.c[2] = s1.c[2];
            s2.c[3] = s1.c[3];
          }
        else
          {
            s2.c[0] = s1.c[3];
            s2.c[1] = s1.c[2];
            s2.c[2] = s1.c[1];
            s2.c[3] = s1.c[0];
          }
    
         return s2.ival;
    }
    
    short reverse(short s)
    {
        short b = 0;
    	short i;
        b = s & 0x1;
        for (i = 0; i < 15; i++)
            b = (b<<1) | ((s = s >> 1) & 1);
        return b;
    }