2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
13 #include "vpx_dsp/inv_txfm.h"
14 #include "vpx_ports/mem.h"
16 void vp9_idct4x4_1_add_neon(
21 uint32x2_t d2u32 = vdup_n_u32(0);
25 int16_t i, a1, cospi_16_64 = 11585;
26 int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
27 out = dct_const_round_shift(out * cospi_16_64);
28 a1 = ROUND_POWER_OF_TWO(out, 4);
30 q0s16 = vdupq_n_s16(a1);
34 for (i = 0; i < 2; i++) {
35 d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 0);
37 d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 1);
40 q8u16 = vaddw_u8(vreinterpretq_u16_s16(q0s16),
41 vreinterpret_u8_u32(d2u32));
42 d6u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
44 vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 0);
46 vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 1);