1 /*
2 * Copyright (c) 2023, Alliance for Open Media. All Rights Reserved.
3 *
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.
9 */
10
11 #ifndef AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
12 #define AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
13
14 #include <arm_neon.h>
15
16 #include "aom_dsp/aom_dsp_common.h"
17 #include "av1/common/enums.h"
18
dist_wtd_avg_u8x8(uint8x8_t a,uint8x8_t b,uint8x8_t wta,uint8x8_t wtb)19 static INLINE uint8x8_t dist_wtd_avg_u8x8(uint8x8_t a, uint8x8_t b,
20 uint8x8_t wta, uint8x8_t wtb) {
21 uint16x8_t wtd_sum = vmull_u8(a, wta);
22
23 wtd_sum = vmlal_u8(wtd_sum, b, wtb);
24
25 return vrshrn_n_u16(wtd_sum, DIST_PRECISION_BITS);
26 }
27
dist_wtd_avg_u16x4(uint16x4_t a,uint16x4_t b,uint16x4_t wta,uint16x4_t wtb)28 static INLINE uint16x4_t dist_wtd_avg_u16x4(uint16x4_t a, uint16x4_t b,
29 uint16x4_t wta, uint16x4_t wtb) {
30 uint32x4_t wtd_sum = vmull_u16(a, wta);
31
32 wtd_sum = vmlal_u16(wtd_sum, b, wtb);
33
34 return vrshrn_n_u32(wtd_sum, DIST_PRECISION_BITS);
35 }
36
dist_wtd_avg_u8x16(uint8x16_t a,uint8x16_t b,uint8x16_t wta,uint8x16_t wtb)37 static INLINE uint8x16_t dist_wtd_avg_u8x16(uint8x16_t a, uint8x16_t b,
38 uint8x16_t wta, uint8x16_t wtb) {
39 uint16x8_t wtd_sum_lo = vmull_u8(vget_low_u8(a), vget_low_u8(wta));
40 uint16x8_t wtd_sum_hi = vmull_u8(vget_high_u8(a), vget_high_u8(wta));
41
42 wtd_sum_lo = vmlal_u8(wtd_sum_lo, vget_low_u8(b), vget_low_u8(wtb));
43 wtd_sum_hi = vmlal_u8(wtd_sum_hi, vget_high_u8(b), vget_high_u8(wtb));
44
45 uint8x8_t wtd_avg_lo = vrshrn_n_u16(wtd_sum_lo, DIST_PRECISION_BITS);
46 uint8x8_t wtd_avg_hi = vrshrn_n_u16(wtd_sum_hi, DIST_PRECISION_BITS);
47
48 return vcombine_u8(wtd_avg_lo, wtd_avg_hi);
49 }
50
dist_wtd_avg_u16x8(uint16x8_t a,uint16x8_t b,uint16x8_t wta,uint16x8_t wtb)51 static INLINE uint16x8_t dist_wtd_avg_u16x8(uint16x8_t a, uint16x8_t b,
52 uint16x8_t wta, uint16x8_t wtb) {
53 uint32x4_t wtd_sum_lo = vmull_u16(vget_low_u16(a), vget_low_u16(wta));
54 uint32x4_t wtd_sum_hi = vmull_u16(vget_high_u16(a), vget_high_u16(wta));
55
56 wtd_sum_lo = vmlal_u16(wtd_sum_lo, vget_low_u16(b), vget_low_u16(wtb));
57 wtd_sum_hi = vmlal_u16(wtd_sum_hi, vget_high_u16(b), vget_high_u16(wtb));
58
59 uint16x4_t wtd_avg_lo = vrshrn_n_u32(wtd_sum_lo, DIST_PRECISION_BITS);
60 uint16x4_t wtd_avg_hi = vrshrn_n_u32(wtd_sum_hi, DIST_PRECISION_BITS);
61
62 return vcombine_u16(wtd_avg_lo, wtd_avg_hi);
63 }
64
65 #endif // AOM_AOM_DSP_ARM_DIST_WTD_AVG_NEON_H_
66