Update libsamplerate (http://www.mega-nerd.com/SRC/index.html) from v…

…ersion 0.1.2 (Nov 28 2002) to 0.1.7 (Feb 14 2009).

Fix detection of CPU positive/negative clipping in configure (it was always detected as false).


git-svn-id: http://svn.mythtv.org/svn/trunk@22521 7dbf422c-18fa-0310-86e9-fd20926502f2

mythtv/configure

@@ -2921,26 +2921,57 @@ fi

# "CPU_CLIP" test for SRC / libsamplerate
# test positive wrap
check_exec << EOF && enable cpuclipspositive
int main(){
    float f = (1<<(sizeof(short)*8))>>1;
    short s = (short)f;
    if ( s == --f )
        return(0);
    return(1);
}
temp_ldflags -lm
check_exec << EOF && enable cpu_clips_positive
    #define _ISOC9X_SOURCE  1
    #define _ISOC99_SOURCE  1
    #define __USE_ISOC99    1
    #define __USE_ISOC9X    1
    #include <math.h>
    int main (void)
    {	double	fval ;
        int k, ival ;

        fval = 1.0 * 0x7FFFFFFF ;
        for (k = 0 ; k < 100 ; k++)
        {
            ival = (lrint (fval)) >> 24 ;
            if (ival != 127)
                return 1 ;

            fval *= 1.2499999 ;
        } ;

        return 0 ;
    }
EOF

# test negative wrap
check_exec << EOF && enable cpuclipsnegative
int main(){
    float f = -((1<<(sizeof(short)*8))>>1) - 1;
    short s = (short)f;
    if ( s == ++f)
        return(0);
    return(1);
}
check_exec << EOF && enable cpu_clips_negative
    #define	_ISOC9X_SOURCE	1
    #define _ISOC99_SOURCE  1
    #define __USE_ISOC99    1
    #define __USE_ISOC9X    1
    #include <math.h>
    int main (void)
    {
        double	fval ;
        int k, ival ;

        fval = -8.0 * 0x10000000 ;
        for (k = 0 ; k < 100 ; k++)
        {
            ival = (lrint (fval)) >> 24 ;
            if (ival != -128)
                return 1 ;

            fval *= 1.2499999 ;
        } ;

        return 0 ;
    }
EOF
restore_flags

# test for distcc
enabled distcc && check_cmd distcc --version || disable distcc