/*
* Copyright (c) 2023, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
#define AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
#include <arm_neon.h>
#include "aom_dsp/aom_dsp_common.h"
#include "av1/common/enums.h"
static inline uint8x8_t dist_wtd_avg_u8x8(uint8x8_t a, uint8x8_t b,
uint8x8_t wta, uint8x8_t wtb) {
uint16x8_t wtd_sum = vmull_u8(a, wta);
wtd_sum = vmlal_u8(wtd_sum, b, wtb);
return vrshrn_n_u16(wtd_sum, DIST_PRECISION_BITS);
}
static inline uint16x4_t dist_wtd_avg_u16x4(uint16x4_t a, uint16x4_t b,
uint16x4_t wta, uint16x4_t wtb) {
uint32x4_t wtd_sum = vmull_u16(a, wta);
wtd_sum = vmlal_u16(wtd_sum, b, wtb);
return vrshrn_n_u32(wtd_sum, DIST_PRECISION_BITS);
}
static inline uint8x16_t dist_wtd_avg_u8x16(uint8x16_t a, uint8x16_t b,
uint8x16_t wta, uint8x16_t wtb) {
uint16x8_t wtd_sum_lo = vmull_u8(vget_low_u8(a), vget_low_u8(wta));
uint16x8_t wtd_sum_hi = vmull_u8(vget_high_u8(a), vget_high_u8(wta));
wtd_sum_lo = vmlal_u8(wtd_sum_lo, vget_low_u8(b), vget_low_u8(wtb));
wtd_sum_hi = vmlal_u8(wtd_sum_hi, vget_high_u8(b), vget_high_u8(wtb));
uint8x8_t wtd_avg_lo = vrshrn_n_u16(wtd_sum_lo, DIST_PRECISION_BITS);
uint8x8_t wtd_avg_hi = vrshrn_n_u16(wtd_sum_hi, DIST_PRECISION_BITS);
return vcombine_u8(wtd_avg_lo, wtd_avg_hi);
}
static inline uint16x8_t dist_wtd_avg_u16x8(uint16x8_t a, uint16x8_t b,
uint16x8_t wta, uint16x8_t wtb) {
uint32x4_t wtd_sum_lo = vmull_u16(vget_low_u16(a), vget_low_u16(wta));
uint32x4_t wtd_sum_hi = vmull_u16(vget_high_u16(a), vget_high_u16(wta));
wtd_sum_lo = vmlal_u16(wtd_sum_lo, vget_low_u16(b), vget_low_u16(wtb));
wtd_sum_hi = vmlal_u16(wtd_sum_hi, vget_high_u16(b), vget_high_u16(wtb));
uint16x4_t wtd_avg_lo = vrshrn_n_u32(wtd_sum_lo, DIST_PRECISION_BITS);
uint16x4_t wtd_avg_hi = vrshrn_n_u32(wtd_sum_hi, DIST_PRECISION_BITS);
return vcombine_u16(wtd_avg_lo, wtd_avg_hi);
}
#endif // AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
