void test_vmvnu16 (void)
{
uint16x4_t out_uint16x4_t;
uint16x4_t arg0_uint16x4_t;
out_uint16x4_t = vmvn_u16 (arg0_uint16x4_t);
}
inline uint16x4_t vmvn(const uint16x4_t & v) { return vmvn_u16(v); }
void vp8_short_fdct4x4_neon(
int16_t *input,
int16_t *output,
int pitch) {
int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
int16x4_t d16s16, d17s16, d26s16, dEmptys16;
uint16x4_t d4u16;
int16x8_t q0s16, q1s16;
int32x4_t q9s32, q10s32, q11s32, q12s32;
int16x4x2_t v2tmp0, v2tmp1;
int32x2x2_t v2tmp2, v2tmp3;
d16s16 = vdup_n_s16(5352);
d17s16 = vdup_n_s16(2217);
q9s32 = vdupq_n_s32(14500);
q10s32 = vdupq_n_s32(7500);
q11s32 = vdupq_n_s32(12000);
q12s32 = vdupq_n_s32(51000);
// Part one
pitch >>= 1;
d0s16 = vld1_s16(input);
input += pitch;
d1s16 = vld1_s16(input);
input += pitch;
d2s16 = vld1_s16(input);
input += pitch;
d3s16 = vld1_s16(input);
v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16),
vreinterpret_s32_s16(d2s16));
v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16),
vreinterpret_s32_s16(d3s16));
v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
vreinterpret_s16_s32(v2tmp3.val[0])); // d1
v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
vreinterpret_s16_s32(v2tmp3.val[1])); // d3
d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
d4s16 = vshl_n_s16(d4s16, 3);
d5s16 = vshl_n_s16(d5s16, 3);
d6s16 = vshl_n_s16(d6s16, 3);
d7s16 = vshl_n_s16(d7s16, 3);
d0s16 = vadd_s16(d4s16, d5s16);
d2s16 = vsub_s16(d4s16, d5s16);
q9s32 = vmlal_s16(q9s32, d7s16, d16s16);
q10s32 = vmlal_s16(q10s32, d7s16, d17s16);
q9s32 = vmlal_s16(q9s32, d6s16, d17s16);
q10s32 = vmlsl_s16(q10s32, d6s16, d16s16);
d1s16 = vshrn_n_s32(q9s32, 12);
d3s16 = vshrn_n_s32(q10s32, 12);
// Part two
v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16),
vreinterpret_s32_s16(d2s16));
v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16),
vreinterpret_s32_s16(d3s16));
v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
vreinterpret_s16_s32(v2tmp3.val[0])); // d1
v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
vreinterpret_s16_s32(v2tmp3.val[1])); // d3
d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
d26s16 = vdup_n_s16(7);
d4s16 = vadd_s16(d4s16, d26s16);
d0s16 = vadd_s16(d4s16, d5s16);
d2s16 = vsub_s16(d4s16, d5s16);
q11s32 = vmlal_s16(q11s32, d7s16, d16s16);
q12s32 = vmlal_s16(q12s32, d7s16, d17s16);
dEmptys16 = vdup_n_s16(0);
d4u16 = vceq_s16(d7s16, dEmptys16);
d0s16 = vshr_n_s16(d0s16, 4);
d2s16 = vshr_n_s16(d2s16, 4);
q11s32 = vmlal_s16(q11s32, d6s16, d17s16);
q12s32 = vmlsl_s16(q12s32, d6s16, d16s16);
d4u16 = vmvn_u16(d4u16);
d1s16 = vshrn_n_s32(q11s32, 16);
d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d4u16));
d3s16 = vshrn_n_s32(q12s32, 16);
q0s16 = vcombine_s16(d0s16, d1s16);
q1s16 = vcombine_s16(d2s16, d3s16);
vst1q_s16(output, q0s16);
vst1q_s16(output + 8, q1s16);
return;
}
