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/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <arm_neon.h>
#include "vpx_ports/mem.h"
#include "vp9/common/vp9_idct.h"
void vp9_idct16x16_1_add_neon(
int16_t *input,
uint8_t *dest,
int dest_stride) {
uint8x8_t d2u8, d3u8, d30u8, d31u8;
uint64x1_t d2u64, d3u64, d4u64, d5u64;
uint16x8_t q0u16, q9u16, q10u16, q11u16, q12u16;
int16x8_t q0s16;
uint8_t *d1, *d2;
int16_t i, j, a1, cospi_16_64 = 11585;
int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
out = dct_const_round_shift(out * cospi_16_64);
a1 = ROUND_POWER_OF_TWO(out, 6);
q0s16 = vdupq_n_s16(a1);
q0u16 = vreinterpretq_u16_s16(q0s16);
for (d1 = d2 = dest, i = 0; i < 4; i++) {
for (j = 0; j < 2; j++) {
d2u64 = vld1_u64((const uint64_t *)d1);
d3u64 = vld1_u64((const uint64_t *)(d1 + 8));
d1 += dest_stride;
d4u64 = vld1_u64((const uint64_t *)d1);
d5u64 = vld1_u64((const uint64_t *)(d1 + 8));
d1 += dest_stride;
q9u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d2u64));
q10u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d3u64));
q11u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d4u64));
q12u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d5u64));
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d30u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
d31u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
vst1_u64((uint64_t *)(d2 + 8), vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d30u8));
vst1_u64((uint64_t *)(d2 + 8), vreinterpret_u64_u8(d31u8));
d2 += dest_stride;
}
}
return;
}
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