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 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 } 112 113 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
