Beispiel #1
0
void test_vhaddQs16 (void)
{
  int16x8_t out_int16x8_t;
  int16x8_t arg0_int16x8_t;
  int16x8_t arg1_int16x8_t;

  out_int16x8_t = vhaddq_s16 (arg0_int16x8_t, arg1_int16x8_t);
}
Beispiel #2
0
void aom_hadamard_16x16_neon(const int16_t *src_diff, int src_stride,
                             int16_t *coeff) {
  int i;

  /* Rearrange 16x16 to 8x32 and remove stride.
   * Top left first. */
  aom_hadamard_8x8_neon(src_diff + 0 + 0 * src_stride, src_stride, coeff + 0);
  /* Top right. */
  aom_hadamard_8x8_neon(src_diff + 8 + 0 * src_stride, src_stride, coeff + 64);
  /* Bottom left. */
  aom_hadamard_8x8_neon(src_diff + 0 + 8 * src_stride, src_stride, coeff + 128);
  /* Bottom right. */
  aom_hadamard_8x8_neon(src_diff + 8 + 8 * src_stride, src_stride, coeff + 192);

  for (i = 0; i < 64; i += 8) {
    const int16x8_t a0 = vld1q_s16(coeff + 0);
    const int16x8_t a1 = vld1q_s16(coeff + 64);
    const int16x8_t a2 = vld1q_s16(coeff + 128);
    const int16x8_t a3 = vld1q_s16(coeff + 192);

    const int16x8_t b0 = vhaddq_s16(a0, a1);
    const int16x8_t b1 = vhsubq_s16(a0, a1);
    const int16x8_t b2 = vhaddq_s16(a2, a3);
    const int16x8_t b3 = vhsubq_s16(a2, a3);

    const int16x8_t c0 = vaddq_s16(b0, b2);
    const int16x8_t c1 = vaddq_s16(b1, b3);
    const int16x8_t c2 = vsubq_s16(b0, b2);
    const int16x8_t c3 = vsubq_s16(b1, b3);

    vst1q_s16(coeff + 0, c0);
    vst1q_s16(coeff + 64, c1);
    vst1q_s16(coeff + 128, c2);
    vst1q_s16(coeff + 192, c3);

    coeff += 8;
  }
}