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 "./vp8_rtcd.h"
14
vp8_short_fdct4x4_neon(int16_t * input,int16_t * output,int pitch)15 void vp8_short_fdct4x4_neon(int16_t *input, int16_t *output, int pitch) {
16 int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
17 int16x4_t d16s16, d17s16, d26s16, dEmptys16;
18 uint16x4_t d4u16;
19 int16x8_t q0s16, q1s16;
20 int32x4_t q9s32, q10s32, q11s32, q12s32;
21 int16x4x2_t v2tmp0, v2tmp1;
22 int32x2x2_t v2tmp2, v2tmp3;
23
24 d16s16 = vdup_n_s16(5352);
25 d17s16 = vdup_n_s16(2217);
26 q9s32 = vdupq_n_s32(14500);
27 q10s32 = vdupq_n_s32(7500);
28 q11s32 = vdupq_n_s32(12000);
29 q12s32 = vdupq_n_s32(51000);
30
31 // Part one
32 pitch >>= 1;
33 d0s16 = vld1_s16(input);
34 input += pitch;
35 d1s16 = vld1_s16(input);
36 input += pitch;
37 d2s16 = vld1_s16(input);
38 input += pitch;
39 d3s16 = vld1_s16(input);
40
41 v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16));
42 v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16));
43 v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
44 vreinterpret_s16_s32(v2tmp3.val[0])); // d1
45 v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
46 vreinterpret_s16_s32(v2tmp3.val[1])); // d3
47
48 d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
49 d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
50 d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
51 d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
52
53 d4s16 = vshl_n_s16(d4s16, 3);
54 d5s16 = vshl_n_s16(d5s16, 3);
55 d6s16 = vshl_n_s16(d6s16, 3);
56 d7s16 = vshl_n_s16(d7s16, 3);
57
58 d0s16 = vadd_s16(d4s16, d5s16);
59 d2s16 = vsub_s16(d4s16, d5s16);
60
61 q9s32 = vmlal_s16(q9s32, d7s16, d16s16);
62 q10s32 = vmlal_s16(q10s32, d7s16, d17s16);
63 q9s32 = vmlal_s16(q9s32, d6s16, d17s16);
64 q10s32 = vmlsl_s16(q10s32, d6s16, d16s16);
65
66 d1s16 = vshrn_n_s32(q9s32, 12);
67 d3s16 = vshrn_n_s32(q10s32, 12);
68
69 // Part two
70 v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16));
71 v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16));
72 v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
73 vreinterpret_s16_s32(v2tmp3.val[0])); // d1
74 v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
75 vreinterpret_s16_s32(v2tmp3.val[1])); // d3
76
77 d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
78 d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
79 d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
80 d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
81
82 d26s16 = vdup_n_s16(7);
83 d4s16 = vadd_s16(d4s16, d26s16);
84
85 d0s16 = vadd_s16(d4s16, d5s16);
86 d2s16 = vsub_s16(d4s16, d5s16);
87
88 q11s32 = vmlal_s16(q11s32, d7s16, d16s16);
89 q12s32 = vmlal_s16(q12s32, d7s16, d17s16);
90
91 dEmptys16 = vdup_n_s16(0);
92 d4u16 = vceq_s16(d7s16, dEmptys16);
93
94 d0s16 = vshr_n_s16(d0s16, 4);
95 d2s16 = vshr_n_s16(d2s16, 4);
96
97 q11s32 = vmlal_s16(q11s32, d6s16, d17s16);
98 q12s32 = vmlsl_s16(q12s32, d6s16, d16s16);
99
100 d4u16 = vmvn_u16(d4u16);
101 d1s16 = vshrn_n_s32(q11s32, 16);
102 d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d4u16));
103 d3s16 = vshrn_n_s32(q12s32, 16);
104
105 q0s16 = vcombine_s16(d0s16, d1s16);
106 q1s16 = vcombine_s16(d2s16, d3s16);
107
108 vst1q_s16(output, q0s16);
109 vst1q_s16(output + 8, q1s16);
110 return;
111 }
112
vp8_short_fdct8x4_neon(int16_t * input,int16_t * output,int pitch)113 void vp8_short_fdct8x4_neon(int16_t *input, int16_t *output, int pitch) {
114 int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
115 int16x4_t d16s16, d17s16, d26s16, d27s16, d28s16, d29s16;
116 uint16x4_t d28u16, d29u16;
117 uint16x8_t q14u16;
118 int16x8_t q0s16, q1s16, q2s16, q3s16;
119 int16x8_t q11s16, q12s16, q13s16, q14s16, q15s16, qEmptys16;
120 int32x4_t q9s32, q10s32, q11s32, q12s32;
121 int16x8x2_t v2tmp0, v2tmp1;
122 int32x4x2_t v2tmp2, v2tmp3;
123
124 d16s16 = vdup_n_s16(5352);
125 d17s16 = vdup_n_s16(2217);
126 q9s32 = vdupq_n_s32(14500);
127 q10s32 = vdupq_n_s32(7500);
128
129 // Part one
130 pitch >>= 1;
131 q0s16 = vld1q_s16(input);
132 input += pitch;
133 q1s16 = vld1q_s16(input);
134 input += pitch;
135 q2s16 = vld1q_s16(input);
136 input += pitch;
137 q3s16 = vld1q_s16(input);
138
139 v2tmp2 =
140 vtrnq_s32(vreinterpretq_s32_s16(q0s16), vreinterpretq_s32_s16(q2s16));
141 v2tmp3 =
142 vtrnq_s32(vreinterpretq_s32_s16(q1s16), vreinterpretq_s32_s16(q3s16));
143 v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0
144 vreinterpretq_s16_s32(v2tmp3.val[0])); // q1
145 v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2
146 vreinterpretq_s16_s32(v2tmp3.val[1])); // q3
147
148 q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]);
149 q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]);
150 q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]);
151 q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]);
152
153 q11s16 = vshlq_n_s16(q11s16, 3);
154 q12s16 = vshlq_n_s16(q12s16, 3);
155 q13s16 = vshlq_n_s16(q13s16, 3);
156 q14s16 = vshlq_n_s16(q14s16, 3);
157
158 q0s16 = vaddq_s16(q11s16, q12s16);
159 q2s16 = vsubq_s16(q11s16, q12s16);
160
161 q11s32 = q9s32;
162 q12s32 = q10s32;
163
164 d26s16 = vget_low_s16(q13s16);
165 d27s16 = vget_high_s16(q13s16);
166 d28s16 = vget_low_s16(q14s16);
167 d29s16 = vget_high_s16(q14s16);
168
169 q9s32 = vmlal_s16(q9s32, d28s16, d16s16);
170 q10s32 = vmlal_s16(q10s32, d28s16, d17s16);
171 q11s32 = vmlal_s16(q11s32, d29s16, d16s16);
172 q12s32 = vmlal_s16(q12s32, d29s16, d17s16);
173
174 q9s32 = vmlal_s16(q9s32, d26s16, d17s16);
175 q10s32 = vmlsl_s16(q10s32, d26s16, d16s16);
176 q11s32 = vmlal_s16(q11s32, d27s16, d17s16);
177 q12s32 = vmlsl_s16(q12s32, d27s16, d16s16);
178
179 d2s16 = vshrn_n_s32(q9s32, 12);
180 d6s16 = vshrn_n_s32(q10s32, 12);
181 d3s16 = vshrn_n_s32(q11s32, 12);
182 d7s16 = vshrn_n_s32(q12s32, 12);
183 q1s16 = vcombine_s16(d2s16, d3s16);
184 q3s16 = vcombine_s16(d6s16, d7s16);
185
186 // Part two
187 q9s32 = vdupq_n_s32(12000);
188 q10s32 = vdupq_n_s32(51000);
189
190 v2tmp2 =
191 vtrnq_s32(vreinterpretq_s32_s16(q0s16), vreinterpretq_s32_s16(q2s16));
192 v2tmp3 =
193 vtrnq_s32(vreinterpretq_s32_s16(q1s16), vreinterpretq_s32_s16(q3s16));
194 v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0
195 vreinterpretq_s16_s32(v2tmp3.val[0])); // q1
196 v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2
197 vreinterpretq_s16_s32(v2tmp3.val[1])); // q3
198
199 q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]);
200 q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]);
201 q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]);
202 q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]);
203
204 q15s16 = vdupq_n_s16(7);
205 q11s16 = vaddq_s16(q11s16, q15s16);
206 q0s16 = vaddq_s16(q11s16, q12s16);
207 q1s16 = vsubq_s16(q11s16, q12s16);
208
209 q11s32 = q9s32;
210 q12s32 = q10s32;
211
212 d0s16 = vget_low_s16(q0s16);
213 d1s16 = vget_high_s16(q0s16);
214 d2s16 = vget_low_s16(q1s16);
215 d3s16 = vget_high_s16(q1s16);
216
217 d0s16 = vshr_n_s16(d0s16, 4);
218 d4s16 = vshr_n_s16(d1s16, 4);
219 d2s16 = vshr_n_s16(d2s16, 4);
220 d6s16 = vshr_n_s16(d3s16, 4);
221
222 d26s16 = vget_low_s16(q13s16);
223 d27s16 = vget_high_s16(q13s16);
224 d28s16 = vget_low_s16(q14s16);
225 d29s16 = vget_high_s16(q14s16);
226
227 q9s32 = vmlal_s16(q9s32, d28s16, d16s16);
228 q10s32 = vmlal_s16(q10s32, d28s16, d17s16);
229 q11s32 = vmlal_s16(q11s32, d29s16, d16s16);
230 q12s32 = vmlal_s16(q12s32, d29s16, d17s16);
231
232 q9s32 = vmlal_s16(q9s32, d26s16, d17s16);
233 q10s32 = vmlsl_s16(q10s32, d26s16, d16s16);
234 q11s32 = vmlal_s16(q11s32, d27s16, d17s16);
235 q12s32 = vmlsl_s16(q12s32, d27s16, d16s16);
236
237 d1s16 = vshrn_n_s32(q9s32, 16);
238 d3s16 = vshrn_n_s32(q10s32, 16);
239 d5s16 = vshrn_n_s32(q11s32, 16);
240 d7s16 = vshrn_n_s32(q12s32, 16);
241
242 qEmptys16 = vdupq_n_s16(0);
243 q14u16 = vceqq_s16(q14s16, qEmptys16);
244 q14u16 = vmvnq_u16(q14u16);
245
246 d28u16 = vget_low_u16(q14u16);
247 d29u16 = vget_high_u16(q14u16);
248 d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d28u16));
249 d5s16 = vsub_s16(d5s16, vreinterpret_s16_u16(d29u16));
250
251 q0s16 = vcombine_s16(d0s16, d1s16);
252 q1s16 = vcombine_s16(d2s16, d3s16);
253 q2s16 = vcombine_s16(d4s16, d5s16);
254 q3s16 = vcombine_s16(d6s16, d7s16);
255
256 vst1q_s16(output, q0s16);
257 vst1q_s16(output + 8, q1s16);
258 vst1q_s16(output + 16, q2s16);
259 vst1q_s16(output + 24, q3s16);
260 return;
261 }
262