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];
}
}
}
}
static void float_to_int16_stride_altivec(int16_t *dst, const float *src,
long len, int stride)
{
int i;
vector signed short d, s;
for (i = 0; i < len - 7; i += 8) {
d = float_to_int16_one_altivec(src + i);
#define ASSIGN_S_VEC_SPLAT_D(j) \
s = vec_splat(d, j); \
vec_ste(s, 0, dst); \
dst += stride
ASSIGN_S_VEC_SPLAT_D(0);
ASSIGN_S_VEC_SPLAT_D(1);
ASSIGN_S_VEC_SPLAT_D(2);
ASSIGN_S_VEC_SPLAT_D(3);
ASSIGN_S_VEC_SPLAT_D(4);
ASSIGN_S_VEC_SPLAT_D(5);
ASSIGN_S_VEC_SPLAT_D(6);
ASSIGN_S_VEC_SPLAT_D(7);
#undef ASSIGN_S_VEC_SPLAT_D
}
}
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 {
for (i = 0; i < channels; i++)
float_to_int16_stride_altivec(dst + i, src[i], len, channels);
}
}
}
static void float_to_int16_stride_altivec(int16_t *dst, const float *src,
long len, int stride)
{
int i;
vector signed short d;
for (i = 0; i < len - 7; i += 8) {
d = float_to_int16_one_altivec(src + i);
VSTE_INC(dst, d, 0, stride);
VSTE_INC(dst, d, 1, stride);
VSTE_INC(dst, d, 2, stride);
VSTE_INC(dst, d, 3, stride);
VSTE_INC(dst, d, 4, stride);
VSTE_INC(dst, d, 5, stride);
VSTE_INC(dst, d, 6, stride);
VSTE_INC(dst, d, 7, stride);
}
}