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android / platform / external / libvpx / 5a9753fca56f0eeb9f61e342b2fccffc364f9426 / . / libvpx / vpx_dsp / arm / sad_neon.c
blob: 173f08ac3c3e202764a8dd01a43a9b8877d08289 [file] [log] [blame]
Vignesh Venkatasubramanian5a9753f2016-01-19 11:05:09 -0800[diff] [blame^]1/*
2 * Copyright (c) 2014 The WebM project authors. 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#include <arm_neon.h>
12
13#include "./vpx_config.h"
14
15#include "vpx/vpx_integer.h"
16
17unsigned int vpx_sad8x16_neon(
18 unsigned char *src_ptr,
19 int src_stride,
20 unsigned char *ref_ptr,
21 int ref_stride) {
22 uint8x8_t d0, d8;
23 uint16x8_t q12;
24 uint32x4_t q1;
25 uint64x2_t q3;
26 uint32x2_t d5;
27 int i;
28
29 d0 = vld1_u8(src_ptr);
30 src_ptr += src_stride;
31 d8 = vld1_u8(ref_ptr);
32 ref_ptr += ref_stride;
33 q12 = vabdl_u8(d0, d8);
34
35 for (i = 0; i < 15; i++) {
36 d0 = vld1_u8(src_ptr);
37 src_ptr += src_stride;
38 d8 = vld1_u8(ref_ptr);
39 ref_ptr += ref_stride;
40 q12 = vabal_u8(q12, d0, d8);
41 }
42
43 q1 = vpaddlq_u16(q12);
44 q3 = vpaddlq_u32(q1);
45 d5 = vadd_u32(vreinterpret_u32_u64(vget_low_u64(q3)),
46 vreinterpret_u32_u64(vget_high_u64(q3)));
47
48 return vget_lane_u32(d5, 0);
49}
50
51unsigned int vpx_sad4x4_neon(
52 unsigned char *src_ptr,
53 int src_stride,
54 unsigned char *ref_ptr,
55 int ref_stride) {
56 uint8x8_t d0, d8;
57 uint16x8_t q12;
58 uint32x2_t d1;
59 uint64x1_t d3;
60 int i;
61
62 d0 = vld1_u8(src_ptr);
63 src_ptr += src_stride;
64 d8 = vld1_u8(ref_ptr);
65 ref_ptr += ref_stride;
66 q12 = vabdl_u8(d0, d8);
67
68 for (i = 0; i < 3; i++) {
69 d0 = vld1_u8(src_ptr);
70 src_ptr += src_stride;
71 d8 = vld1_u8(ref_ptr);
72 ref_ptr += ref_stride;
73 q12 = vabal_u8(q12, d0, d8);
74 }
75
76 d1 = vpaddl_u16(vget_low_u16(q12));
77 d3 = vpaddl_u32(d1);
78
79 return vget_lane_u32(vreinterpret_u32_u64(d3), 0);
80}
81
82unsigned int vpx_sad16x8_neon(
83 unsigned char *src_ptr,
84 int src_stride,
85 unsigned char *ref_ptr,
86 int ref_stride) {
87 uint8x16_t q0, q4;
88 uint16x8_t q12, q13;
89 uint32x4_t q1;
90 uint64x2_t q3;
91 uint32x2_t d5;
92 int i;
93
94 q0 = vld1q_u8(src_ptr);
95 src_ptr += src_stride;
96 q4 = vld1q_u8(ref_ptr);
97 ref_ptr += ref_stride;
98 q12 = vabdl_u8(vget_low_u8(q0), vget_low_u8(q4));
99 q13 = vabdl_u8(vget_high_u8(q0), vget_high_u8(q4));
100
101 for (i = 0; i < 7; i++) {
102 q0 = vld1q_u8(src_ptr);
103 src_ptr += src_stride;
104 q4 = vld1q_u8(ref_ptr);
105 ref_ptr += ref_stride;
106 q12 = vabal_u8(q12, vget_low_u8(q0), vget_low_u8(q4));
107 q13 = vabal_u8(q13, vget_high_u8(q0), vget_high_u8(q4));
108 }
109
110 q12 = vaddq_u16(q12, q13);
111 q1 = vpaddlq_u16(q12);
112 q3 = vpaddlq_u32(q1);
113 d5 = vadd_u32(vreinterpret_u32_u64(vget_low_u64(q3)),
114 vreinterpret_u32_u64(vget_high_u64(q3)));
115
116 return vget_lane_u32(d5, 0);
117}
118
119static INLINE unsigned int horizontal_long_add_16x8(const uint16x8_t vec_lo,
120 const uint16x8_t vec_hi) {
121 const uint32x4_t vec_l_lo = vaddl_u16(vget_low_u16(vec_lo),
122 vget_high_u16(vec_lo));
123 const uint32x4_t vec_l_hi = vaddl_u16(vget_low_u16(vec_hi),
124 vget_high_u16(vec_hi));
125 const uint32x4_t a = vaddq_u32(vec_l_lo, vec_l_hi);
126 const uint64x2_t b = vpaddlq_u32(a);
127 const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
128 vreinterpret_u32_u64(vget_high_u64(b)));
129 return vget_lane_u32(c, 0);
130}
131static INLINE unsigned int horizontal_add_16x8(const uint16x8_t vec_16x8) {
132 const uint32x4_t a = vpaddlq_u16(vec_16x8);
133 const uint64x2_t b = vpaddlq_u32(a);
134 const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
135 vreinterpret_u32_u64(vget_high_u64(b)));
136 return vget_lane_u32(c, 0);
137}
138
139unsigned int vpx_sad64x64_neon(const uint8_t *src, int src_stride,
140 const uint8_t *ref, int ref_stride) {
141 int i;
142 uint16x8_t vec_accum_lo = vdupq_n_u16(0);
143 uint16x8_t vec_accum_hi = vdupq_n_u16(0);
144 for (i = 0; i < 64; ++i) {
145 const uint8x16_t vec_src_00 = vld1q_u8(src);
146 const uint8x16_t vec_src_16 = vld1q_u8(src + 16);
147 const uint8x16_t vec_src_32 = vld1q_u8(src + 32);
148 const uint8x16_t vec_src_48 = vld1q_u8(src + 48);
149 const uint8x16_t vec_ref_00 = vld1q_u8(ref);
150 const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16);
151 const uint8x16_t vec_ref_32 = vld1q_u8(ref + 32);
152 const uint8x16_t vec_ref_48 = vld1q_u8(ref + 48);
153 src += src_stride;
154 ref += ref_stride;
155 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00),
156 vget_low_u8(vec_ref_00));
157 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00),
158 vget_high_u8(vec_ref_00));
159 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16),
160 vget_low_u8(vec_ref_16));
161 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16),
162 vget_high_u8(vec_ref_16));
163 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_32),
164 vget_low_u8(vec_ref_32));
165 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_32),
166 vget_high_u8(vec_ref_32));
167 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_48),
168 vget_low_u8(vec_ref_48));
169 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_48),
170 vget_high_u8(vec_ref_48));
171 }
172 return horizontal_long_add_16x8(vec_accum_lo, vec_accum_hi);
173}
174
175unsigned int vpx_sad32x32_neon(const uint8_t *src, int src_stride,
176 const uint8_t *ref, int ref_stride) {
177 int i;
178 uint16x8_t vec_accum_lo = vdupq_n_u16(0);
179 uint16x8_t vec_accum_hi = vdupq_n_u16(0);
180
181 for (i = 0; i < 32; ++i) {
182 const uint8x16_t vec_src_00 = vld1q_u8(src);
183 const uint8x16_t vec_src_16 = vld1q_u8(src + 16);
184 const uint8x16_t vec_ref_00 = vld1q_u8(ref);
185 const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16);
186 src += src_stride;
187 ref += ref_stride;
188 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00),
189 vget_low_u8(vec_ref_00));
190 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00),
191 vget_high_u8(vec_ref_00));
192 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16),
193 vget_low_u8(vec_ref_16));
194 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16),
195 vget_high_u8(vec_ref_16));
196 }
197 return horizontal_add_16x8(vaddq_u16(vec_accum_lo, vec_accum_hi));
198}
199
200unsigned int vpx_sad16x16_neon(const uint8_t *src, int src_stride,
201 const uint8_t *ref, int ref_stride) {
202 int i;
203 uint16x8_t vec_accum_lo = vdupq_n_u16(0);
204 uint16x8_t vec_accum_hi = vdupq_n_u16(0);
205
206 for (i = 0; i < 16; ++i) {
207 const uint8x16_t vec_src = vld1q_u8(src);
208 const uint8x16_t vec_ref = vld1q_u8(ref);
209 src += src_stride;
210 ref += ref_stride;
211 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src),
212 vget_low_u8(vec_ref));
213 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src),
214 vget_high_u8(vec_ref));
215 }
216 return horizontal_add_16x8(vaddq_u16(vec_accum_lo, vec_accum_hi));
217}
218
219unsigned int vpx_sad8x8_neon(const uint8_t *src, int src_stride,
220 const uint8_t *ref, int ref_stride) {
221 int i;
222 uint16x8_t vec_accum = vdupq_n_u16(0);
223
224 for (i = 0; i < 8; ++i) {
225 const uint8x8_t vec_src = vld1_u8(src);
226 const uint8x8_t vec_ref = vld1_u8(ref);
227 src += src_stride;
228 ref += ref_stride;
229 vec_accum = vabal_u8(vec_accum, vec_src, vec_ref);
230 }
231 return horizontal_add_16x8(vec_accum);
232}