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static void int32_to_float_fmul_scalar_altivec(float *dst, const int *src, float mul, int len)

{

    union {

        vector float v;

        float s[4];

    } mul_u;

    int i;

    vector float src1, src2, dst1, dst2, mul_v, zero;

    zero = (vector float)vec_splat_u32(0);

    mul_u.s[0] = mul;

    mul_v = vec_splat(mul_u.v, 0);

    for(i=0; i<len; i+=8) {

        src1 = vec_ctf(vec_ld(0,  src+i), 0);

        src2 = vec_ctf(vec_ld(16, src+i), 0);

        dst1 = vec_madd(src1, mul_v, zero);

        dst2 = vec_madd(src2, mul_v, zero);

        vec_st(dst1,  0, dst+i);

        vec_st(dst2, 16, dst+i);

    }

}

static vector signed short

float_to_int16_one_altivec(const float *src)

{

    vector float s0 = vec_ld(0, src);

    vector float s1 = vec_ld(16, src);

    vector signed int t0 = vec_cts(s0, 0);

    vector signed int t1 = vec_cts(s1, 0);

    return vec_packs(t0,t1);

}

static void float_to_int16_altivec(int16_t *dst, const float *src, long len)

{

    int i;

    vector signed short d0, d1, d;

    vector unsigned char align;

    if(((long)dst)&15) //FIXME

    for(i=0; i<len-7; i+=8) {

        d0 = vec_ld(0, dst+i);

        d = float_to_int16_one_altivec(src+i);

        d1 = vec_ld(15, dst+i);

        d1 = vec_perm(d1, d0, vec_lvsl(0,dst+i));

        align = vec_lvsr(0, dst+i);

        d0 = vec_perm(d1, d, align);

        d1 = vec_perm(d, d1, align);

        vec_st(d0, 0, dst+i);

        vec_st(d1,15, dst+i);

    }

    else

    for(i=0; i<len-7; i+=8) {

        d = float_to_int16_one_altivec(src+i);

        vec_st(d, 0, dst+i);

    }

}

static void

float_to_int16_interleave_altivec(int16_t *dst, const float **src,

                                  long len, int channels)

{

    int i;

    vector signed short d0, d1, d2, c0, c1, t0, t1;

    vector unsigned char align;

    if(channels == 1)

        float_to_int16_altivec(dst, src[0], len);

    else

        if (channels == 2) {

        if(((long)dst)&15)

        for(i=0; i<len-7; i+=8) {

            d0 = vec_ld(0, dst + i);

            t0 = float_to_int16_one_altivec(src[0] + i);

            d1 = vec_ld(31, dst + i);

            t1 = float_to_int16_one_altivec(src[1] + i);

            c0 = vec_mergeh(t0, t1);

            c1 = vec_mergel(t0, t1);

            d2 = vec_perm(d1, d0, vec_lvsl(0, dst + i));

            align = vec_lvsr(0, dst + i);

            d0 = vec_perm(d2, c0, align);

            d1 = vec_perm(c0, c1, align);

            vec_st(d0,  0, dst + i);

            d0 = vec_perm(c1, d2, align);

            vec_st(d1, 15, dst + i);

            vec_st(d0, 31, dst + i);

            dst+=8;

        }

        else

        for(i=0; i<len-7; i+=8) {

            t0 = float_to_int16_one_altivec(src[0] + i);

            t1 = float_to_int16_one_altivec(src[1] + i);

            d0 = vec_mergeh(t0, t1);

            d1 = vec_mergel(t0, t1);

            vec_st(d0,  0, dst + i);

            vec_st(d1, 16, dst + i);

            dst+=8;

        }

    } else {

        DECLARE_ALIGNED(16, int16_t, tmp)[len];

        int c, j;

        for (c = 0; c < channels; c++) {

            float_to_int16_altivec(tmp, src[c], len);

            for (i = 0, j = c; i < len; i++, j+=channels) {

                dst[j] = tmp[i];

            }

        }

   }

}

    c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_altivec;

        c->float_to_int16 = float_to_int16_altivec;

        c->float_to_int16_interleave = float_to_int16_interleave_altivec;