void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
{
int i;
const int32_t *src;
int32_t *dst;
int tmp[16];
int t0, t1, t2, t3, t4;
#define COMPENSATE(x) (x)
src = in;
dst = tmp;
for (i = 0; i < 4; i++)
{
if (flags[i])
{
IVI_INV_SLANT4(src[0], src[4], src[8], src[12],
dst[0], dst[4], dst[8], dst[12],
t0, t1, t2, t3, t4);
}
else
dst[0] = dst[4] = dst[8] = dst[12] = 0;
src++;
dst++;
}
#undef COMPENSATE
#define COMPENSATE(x) ((x + 1)>>1)
src = tmp;
for (i = 0; i < 4; i++)
{
if (!src[0] && !src[1] && !src[2] && !src[3])
{
out[0] = out[1] = out[2] = out[3] = 0;
}
else
{
IVI_INV_SLANT4(src[0], src[1], src[2], src[3],
out[0], out[1], out[2], out[3],
t0, t1, t2, t3, t4);
}
src += 4;
out += pitch;
}
#undef COMPENSATE
}
void ff_ivi_row_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
{
int i;
int t0, t1, t2, t3, t4;
#define COMPENSATE(x) (((x) + 1)>>1)
for (i = 0; i < 4; i++) {
if (!in[0] && !in[1] && !in[2] && !in[3]) {
memset(out, 0, 4*sizeof(out[0]));
} else {
IVI_INV_SLANT4( in[0], in[1], in[2], in[3],
out[0], out[1], out[2], out[3],
t0, t1, t2, t3, t4);
}
in += 4;
out += pitch;
}
#undef COMPENSATE
}
void ff_ivi_col_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
{
int i, row2;
int t0, t1, t2, t3, t4;
row2 = pitch << 1;
#define COMPENSATE(x) (((x) + 1)>>1)
for (i = 0; i < 4; i++) {
if (flags[i]) {
IVI_INV_SLANT4(in[0], in[4], in[8], in[12],
out[0], out[pitch], out[row2], out[row2 + pitch],
t0, t1, t2, t3, t4);
} else {
out[0] = out[pitch] = out[row2] = out[row2 + pitch] = 0;
}
in++;
out++;
}
#undef COMPENSATE
}