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