1 @/***************************************************************************** 2 @* 3 @* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 4 @* 5 @* Licensed under the Apache License, Version 2.0 (the "License"); 6 @* you may not use this file except in compliance with the License. 7 @* You may obtain a copy of the License at: 8 @* 9 @* http://www.apache.org/licenses/LICENSE-2.0 10 @* 11 @* Unless required by applicable law or agreed to in writing, software 12 @* distributed under the License is distributed on an "AS IS" BASIS, 13 @* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @* See the License for the specific language governing permissions and 15 @* limitations under the License. 16 @* 17 @*****************************************************************************/ 18 @/** 19 @******************************************************************************* 20 @* @file 21 @* ihevc_intra_pred_luma_mode_27_to_33.s 22 @* 23 @* @brief 24 @* contains function definition for intra prediction interpolation filters 25 @* 26 @* 27 @* @author 28 @* parthiban v 29 @* 30 @* @par list of functions: 31 @* - ihevc_intra_pred_luma_mode_27_to_33() 32 @* 33 @* @remarks 34 @* none 35 @* 36 @******************************************************************************* 37 @*/ 38 @ 39 @/** 40 @******************************************************************************* 41 @* 42 @* @brief 43 @* intra prediction interpolation filter for luma mode 27 to mode 33 44 @* 45 @* @par description: 46 @* intraprediction for mode 27 to 33 (positive angle, vertical mode ) with 47 @* .extern neighboring samples location pointed by 'pu1_ref' to the tu 48 @* block location pointed by 'pu1_dst' 49 @* 50 @* @param[in] pu1_src 51 @* uword8 pointer to the source 52 @* 53 @* @param[out] pu1_dst 54 @* uword8 pointer to the destination 55 @* 56 @* @param[in] src_strd 57 @* integer source stride 58 @* 59 @* @param[in] dst_strd 60 @* integer destination stride 61 @* 62 @* @param[in] nt 63 @* integer transform block size 64 @* 65 @* @param[in] mode 66 @* integer intraprediction mode 67 @* 68 @* @returns 69 @* 70 @* @remarks 71 @* none 72 @* 73 @******************************************************************************* 74 @*/ 75 76 @void ihevc_intra_pred_luma_mode_27_to_33(uword8 *pu1_ref, 77 @ word32 src_strd, 78 @ uword8 *pu1_dst, 79 @ word32 dst_strd, 80 @ word32 nt, 81 @ word32 mode) 82 @**************variables vs registers***************************************** 83 @r0 => *pu1_ref 84 @r1 => src_strd 85 @r2 => *pu1_dst 86 @r3 => dst_strd 87 88 .text 89 .align 4 90 91 92 93 94 .globl ihevc_intra_pred_luma_mode_27_to_33_a9q 95 .extern gai4_ihevc_ang_table 96 .extern gau1_ihevc_planar_factor 97 98 gai4_ihevc_ang_table_addr: 99 .long gai4_ihevc_ang_table - ulbl1 - 8 100 101 gau1_ihevc_planar_factor_addr: 102 .long gau1_ihevc_planar_factor - ulbl2 - 8 103 104 105 .type ihevc_intra_pred_luma_mode_27_to_33_a9q, %function 106 107 ihevc_intra_pred_luma_mode_27_to_33_a9q: 108 109 stmfd sp!, {r4-r12, r14} @stack stores the values of the arguments 110 111 ldr r4,[sp,#40] @loads nt 112 ldr r5,[sp,#44] @loads mode 113 ldr r6,gai4_ihevc_ang_table_addr @loads word32 gai4_ihevc_ang_table[35] 114 ulbl1: 115 add r6,r6,pc 116 117 lsl r7,r4,#1 @two_nt 118 119 add r8,r6,r5,lsl #2 @*gai4_ihevc_ang_table[mode] 120 ldr r9,[r8] @intra_pred_ang = gai4_ihevc_ang_table[mode] 121 ldr r1,gau1_ihevc_planar_factor_addr @used for ((row + 1) * intra_pred_ang) row values 122 ulbl2: 123 add r1,r1,pc 124 add r6,r1,#1 125 126 tst r4,#7 127 add r8,r0,r7 @pu1_ref + two_nt 128 mov lr,#0 @row 129 mov r12,r4 130 bne core_loop_4 131 132 core_loop_8: 133 add r8,r8,#1 @pu1_ref_main_idx += (two_nt + 1) 134 vdup.8 d0,r9 @intra_pred_ang 135 mov r12,r4,lsr #3 @divide by 8 136 137 vmov.i8 d1,#32 138 mul r7,r4,r12 139 140 vmov.i16 q3,#31 141 @lsl r12,r3,#3 142 143 mov r1,r8 144 @sub r12,r12,r4 145 mov r5,r4 146 mov r11,#1 147 148 prologue: 149 vld1.8 {d3},[r6] @loads the row value 150 vmull.u8 q1,d3,d0 @pos = ((row + 1) * intra_pred_ang) 151 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 152 vmovn.i16 d4,q2 153 vshrn.u16 d5,q1,#5 @idx = pos >> 5 154 155 vdup.8 d31,d4[0] 156 add r0,r2,r3 157 158 vmov.u32 lr,d5[0] @(i row)extract idx to the r register 159 160 vdup.8 d29,d4[1] @(ii) 161 and r9,lr,#0xff @(i row) get the last byte 162 163 add r10,r8,r9 @(i row)*pu1_ref[ref_main_idx] 164 165 asr lr,lr,#8 @(ii)shift by 8 166 vld1.8 {d8},[r10],r11 @(i row)ref_main_idx 167 and r9,lr,#0xff @(ii)get the last byte 168 169 asr lr,lr,#8 @(iii) 170 vld1.8 {d9},[r10] @(i row)ref_main_idx_1 171 add r12,r8,r9 @(ii)*pu1_ref[ref_main_idx] 172 173 and r9,lr,#0xff @(iii) 174 vsub.u8 d30,d1,d31 @32-fract(dup_const_32_fract) 175 add r10,r8,r9 @(iii)*pu1_ref[ref_main_idx] 176 177 vld1.8 {d12},[r12],r11 @(ii)ref_main_idx 178 vmull.u8 q5,d8,d30 @(i row)vmull_u8(ref_main_idx, dup_const_32_fract) 179 180 vld1.8 {d13},[r12] @(ii)ref_main_idx_1 181 vmlal.u8 q5,d9,d31 @(i row)vmull_u8(ref_main_idx_1, dup_const_fract) 182 asr lr,lr,#8 @(iv) 183 184 vdup.8 d27,d4[2] @(iii) 185 vsub.u8 d28,d1,d29 @(ii)32-fract(dup_const_32_fract) 186 and r9,lr,#0xff @(iv) 187 188 vdup.8 d25,d4[3] @(iv) 189 vmull.u8 q7,d12,d28 @(ii)vmull_u8(ref_main_idx, dup_const_32_fract) 190 add r12,r8,r9 @(iv)*pu1_ref[ref_main_idx] 191 192 vld1.8 {d16},[r10],r11 @(iii)ref_main_idx 193 vmlal.u8 q7,d13,d29 @(ii)vmull_u8(ref_main_idx_1, dup_const_fract) 194 195 vld1.8 {d17},[r10] @(iii)ref_main_idx_1 196 vrshrn.i16 d10,q5,#5 @(i row)shift_res = vrshrn_n_u16(add_res, 5) 197 198 vld1.8 {d20},[r12],r11 @(iv)ref_main_idx 199 vsub.u8 d26,d1,d27 @(iii)32-fract(dup_const_32_fract) 200 201 vld1.8 {d21},[r12] @(iv)ref_main_idx_1 202 203 vdup.8 d31,d4[4] @(v) 204 vmull.u8 q9,d16,d26 @(iii)vmull_u8(ref_main_idx, dup_const_32_fract) 205 206 vmov.u32 lr,d5[1] @extract idx to the r register 207 vmlal.u8 q9,d17,d27 @(iii)vmull_u8(ref_main_idx_1, dup_const_fract) 208 209 vst1.8 {d10},[r2]! @(i row) 210 vrshrn.i16 d14,q7,#5 @(ii)shift_res = vrshrn_n_u16(add_res, 5) 211 212 and r9,lr,#0xff @(v) 213 vdup.8 d29,d4[5] @(vi) 214 add r10,r8,r9 @(v)*pu1_ref[ref_main_idx] 215 216 vld1.8 {d8},[r10],r11 @(v)ref_main_idx 217 vsub.u8 d24,d1,d25 @(iv)32-fract(dup_const_32_fract) 218 219 asr lr,lr,#8 @(vi) 220 vmull.u8 q11,d20,d24 @(iv)vmull_u8(ref_main_idx, dup_const_32_fract) 221 and r9,lr,#0xff @(vi) 222 223 vld1.8 {d9},[r10] @(v)ref_main_idx_1 224 vmlal.u8 q11,d21,d25 @(iv)vmull_u8(ref_main_idx_1, dup_const_fract) 225 226 vst1.8 {d14},[r0],r3 @(ii) 227 vrshrn.i16 d18,q9,#5 @(iii)shift_res = vrshrn_n_u16(add_res, 5) 228 229 add r12,r8,r9 @(vi)*pu1_ref[ref_main_idx] 230 vdup.8 d27,d4[6] @(vii) 231 asr lr,lr,#8 @(vii) 232 233 and r9,lr,#0xff @(vii) 234 vsub.u8 d30,d1,d31 @(v)32-fract(dup_const_32_fract) 235 add r10,r8,r9 @(vii)*pu1_ref[ref_main_idx] 236 237 vld1.8 {d12},[r12],r11 @(vi)ref_main_idx 238 vmull.u8 q5,d8,d30 @(v)vmull_u8(ref_main_idx, dup_const_32_fract) 239 240 vld1.8 {d13},[r12] @(vi)ref_main_idx_1 241 vmlal.u8 q5,d9,d31 @(v)vmull_u8(ref_main_idx_1, dup_const_fract) 242 243 vst1.8 {d18},[r0],r3 @(iii) 244 vrshrn.i16 d22,q11,#5 @(iv)shift_res = vrshrn_n_u16(add_res, 5) 245 246 asr lr,lr,#8 @(viii) 247 vdup.8 d25,d4[7] @(viii) 248 and r9,lr,#0xff @(viii) 249 250 vld1.8 {d16},[r10],r11 @(vii)ref_main_idx 251 vsub.u8 d28,d1,d29 @(vi)32-fract(dup_const_32_fract) 252 253 vld1.8 {d17},[r10] @(vii)ref_main_idx_1 254 vmull.u8 q7,d12,d28 @(vi)vmull_u8(ref_main_idx, dup_const_32_fract) 255 256 add r12,r8,r9 @(viii)*pu1_ref[ref_main_idx] 257 vmlal.u8 q7,d13,d29 @(vi)vmull_u8(ref_main_idx_1, dup_const_fract) 258 subs r4,r4,#8 259 260 vst1.8 {d22},[r0],r3 @(iv) 261 vrshrn.i16 d10,q5,#5 @(v)shift_res = vrshrn_n_u16(add_res, 5) 262 263 vld1.8 {d20},[r12],r11 @(viii)ref_main_idx 264 vsub.u8 d26,d1,d27 @(vii)32-fract(dup_const_32_fract) 265 266 vld1.8 {d21},[r12] @(viii)ref_main_idx_1 267 vmull.u8 q9,d16,d26 @(vii)vmull_u8(ref_main_idx, dup_const_32_fract) 268 269 addgt r8,r8,#8 270 vmlal.u8 q9,d17,d27 @(vii)vmull_u8(ref_main_idx_1, dup_const_fract) 271 subgt r7,r7,#8 272 273 vst1.8 {d10},[r0],r3 @(v) 274 vrshrn.i16 d14,q7,#5 @(vi)shift_res = vrshrn_n_u16(add_res, 5) 275 276 beq epilogue 277 278 vld1.8 {d5},[r6] @loads the row value 279 vmull.u8 q1,d5,d0 @pos = ((row + 1) * intra_pred_ang) 280 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 281 vmovn.i16 d4,q2 282 vshrn.u16 d3,q1,#5 @idx = pos >> 5 283 vmov.u32 lr,d3[0] @(i)extract idx to the r register 284 and r9,lr,#0xff @(i) 285 add r10,r8,r9 @(i)*pu1_ref[ref_main_idx] 286 287 kernel_8_rows: 288 asr lr,lr,#8 @(ii) 289 vdup.8 d31,d4[0] 290 subs r4,r4,#8 291 292 vld1.8 {d8},[r10],r11 @(i)ref_main_idx 293 vsub.u8 d24,d1,d25 @(viii)32-fract(dup_const_32_fract) 294 and r9,lr,#0xff @(ii) 295 addle r6,r6,#8 @increment the row value 296 297 vld1.8 {d9},[r10] @(i)ref_main_idx_1 298 vmull.u8 q11,d20,d24 @(viii)vmull_u8(ref_main_idx, dup_const_32_fract) 299 add r12,r8,r9 @(ii)*pu1_ref[ref_main_idx] 300 301 vld1.8 {d5},[r6] @loads the row value 302 vmlal.u8 q11,d21,d25 @(viii)vmull_u8(ref_main_idx_1, dup_const_fract) 303 asr lr,lr,#8 @(iii) 304 305 vdup.8 d29,d4[1] @(ii) 306 vrshrn.i16 d18,q9,#5 @(vii)shift_res = vrshrn_n_u16(add_res, 5) 307 and r9,lr,#0xff @(iii) 308 309 vst1.8 {d14},[r0],r3 @(vi) 310 vsub.u8 d30,d1,d31 @(i)32-fract(dup_const_32_fract) 311 add r10,r8,r9 @(iii)*pu1_ref[ref_main_idx] 312 313 vld1.8 {d12},[r12],r11 @(ii)ref_main_idx 314 vmull.u8 q5,d8,d30 @(i)vmull_u8(ref_main_idx, dup_const_32_fract) 315 asr lr,lr,#8 @(iv) 316 317 vld1.8 {d13},[r12] @(ii)ref_main_idx_1 318 vmlal.u8 q5,d9,d31 @(i)vmull_u8(ref_main_idx_1, dup_const_fract) 319 and r9,lr,#0xff @(iv) 320 321 vmov.u32 lr,d3[1] @extract idx to the r register 322 vrshrn.i16 d22,q11,#5 @(viii)shift_res = vrshrn_n_u16(add_res, 5) 323 324 vdup.8 d27,d4[2] @(iii) 325 vsub.u8 d28,d1,d29 @(ii)32-fract(dup_const_32_fract) 326 movle r4,r5 @reload nt 327 328 vld1.8 {d16},[r10],r11 @(iii)ref_main_idx 329 vmull.u8 q7,d12,d28 @(ii)vmull_u8(ref_main_idx, dup_const_32_fract) 330 add r12,r8,r9 @(iv)*pu1_ref[ref_main_idx] 331 332 vst1.8 {d18},[r0],r3 @(vii) 333 vmlal.u8 q7,d13,d29 @(ii)vmull_u8(ref_main_idx_1, dup_const_fract) 334 335 vld1.8 {d17},[r10] @(iii)ref_main_idx_1 336 vrshrn.i16 d10,q5,#5 @(i)shift_res = vrshrn_n_u16(add_res, 5) 337 338 vdup.8 d25,d4[3] @(iv) 339 vmull.u8 q1,d5,d0 @pos = ((row + 1) * intra_pred_ang) 340 341 vst1.8 {d22},[r0] @(viii) 342 vsub.u8 d26,d1,d27 @(iii)32-fract(dup_const_32_fract) 343 344 vld1.8 {d20},[r12],r11 @(iv)ref_main_idx 345 vmull.u8 q9,d16,d26 @(iii)vmull_u8(ref_main_idx, dup_const_32_fract) 346 add r0,r2,r3 347 348 vld1.8 {d21},[r12] @(iv)ref_main_idx_1 349 vmlal.u8 q9,d17,d27 @(iii)vmull_u8(ref_main_idx_1, dup_const_fract) 350 and r9,lr,#0xff @(v) 351 352 vdup.8 d31,d4[4] @(v) 353 vrshrn.i16 d14,q7,#5 @(ii)shift_res = vrshrn_n_u16(add_res, 5) 354 add r10,r8,r9 @(v)*pu1_ref[ref_main_idx] 355 356 vst1.8 {d10},[r2]! @(i) 357 vsub.u8 d24,d1,d25 @(iv)32-fract(dup_const_32_fract) 358 asr lr,lr,#8 @(vi) 359 360 vdup.8 d29,d4[5] @(vi) 361 vmull.u8 q11,d20,d24 @(iv)vmull_u8(ref_main_idx, dup_const_32_fract) 362 and r9,lr,#0xff @(vi) 363 364 vdup.8 d27,d4[6] @(vii) 365 vmlal.u8 q11,d21,d25 @(iv)vmull_u8(ref_main_idx_1, dup_const_fract) 366 add r12,r8,r9 @(vi)*pu1_ref[ref_main_idx] 367 368 vdup.8 d25,d4[7] @(viii) 369 vrshrn.i16 d18,q9,#5 @(iii)shift_res = vrshrn_n_u16(add_res, 5) 370 asr lr,lr,#8 @(vii) 371 372 vld1.8 {d8},[r10],r11 @(v)ref_main_idx 373 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 374 and r9,lr,#0xff @(vii) 375 376 vld1.8 {d9},[r10] @(v)ref_main_idx_1 377 vshrn.u16 d3,q1,#5 @idx = pos >> 5 378 asr lr,lr,#8 @(viii) 379 380 vst1.8 {d14},[r0],r3 @(ii) 381 vrshrn.i16 d22,q11,#5 @(iv)shift_res = vrshrn_n_u16(add_res, 5) 382 add r10,r8,r9 @(vii)*pu1_ref[ref_main_idx] 383 384 vld1.8 {d12},[r12],r11 @(vi)ref_main_idx 385 vsub.u8 d30,d1,d31 @(v)32-fract(dup_const_32_fract) 386 and r9,lr,#0xff @(viii) 387 388 vld1.8 {d13},[r12] @(vi)ref_main_idx_1 389 vmull.u8 q5,d8,d30 @(v)vmull_u8(ref_main_idx, dup_const_32_fract) 390 391 vmov.u32 lr,d3[0] @(i)extract idx to the r register 392 vmlal.u8 q5,d9,d31 @(v)vmull_u8(ref_main_idx_1, dup_const_fract) 393 add r12,r8,r9 @(viii)*pu1_ref[ref_main_idx] 394 395 vld1.8 {d16},[r10],r11 @(vii)ref_main_idx 396 vsub.u8 d28,d1,d29 @(vi)32-fract(dup_const_32_fract) 397 398 vst1.8 {d18},[r0],r3 @(iii) 399 vmull.u8 q7,d12,d28 @(vi)vmull_u8(ref_main_idx, dup_const_32_fract) 400 movle r8,r1 @reload the source to pu1_src+2nt 401 402 vld1.8 {d17},[r10] @(vii)ref_main_idx_1 403 vmlal.u8 q7,d13,d29 @(vi)vmull_u8(ref_main_idx_1, dup_const_fract) 404 addgt r8,r8,#8 @increment the source next set 8 columns in same row 405 406 vld1.8 {d20},[r12],r11 @(viii)ref_main_idx 407 vrshrn.i16 d10,q5,#5 @(v)shift_res = vrshrn_n_u16(add_res, 5) 408 409 vld1.8 {d21},[r12] @(viii)ref_main_idx_1 410 vsub.u8 d26,d1,d27 @(vii)32-fract(dup_const_32_fract) 411 lslle r12,r3,#3 412 413 vst1.8 {d22},[r0],r3 @(iv) 414 vmull.u8 q9,d16,d26 @(vii)vmull_u8(ref_main_idx, dup_const_32_fract) 415 suble r12,r12,r5 416 417 vst1.8 {d10},[r0],r3 @(v) 418 vmlal.u8 q9,d17,d27 @(vii)vmull_u8(ref_main_idx_1, dup_const_fract) 419 addle r2,r2,r12 @increment the dst pointer to 8*dst_strd - nt 420 421 vmovn.i16 d4,q2 422 vrshrn.i16 d14,q7,#5 @(vi)shift_res = vrshrn_n_u16(add_res, 5) 423 and r9,lr,#0xff @(i) 424 425 subs r7,r7,#8 426 add r10,r8,r9 @(i)*pu1_ref[ref_main_idx] 427 428 bne kernel_8_rows 429 430 epilogue: 431 vst1.8 {d14},[r0],r3 @(vi) 432 vrshrn.i16 d18,q9,#5 @(vii)shift_res = vrshrn_n_u16(add_res, 5) 433 434 vsub.u8 d24,d1,d25 @(viii)32-fract(dup_const_32_fract) 435 vmull.u8 q11,d20,d24 @(viii)vmull_u8(ref_main_idx, dup_const_32_fract) 436 vmlal.u8 q11,d21,d25 @(viii)vmull_u8(ref_main_idx_1, dup_const_fract) 437 438 vst1.8 {d18},[r0],r3 @(vii) 439 vrshrn.i16 d22,q11,#5 @(viii)shift_res = vrshrn_n_u16(add_res, 5) 440 441 vst1.8 {d22},[r0],r3 @(viii) 442 b end_loops 443 444 core_loop_4: 445 add r10,r8,#1 @pu1_ref_main_idx += (two_nt + 1) 446 add r11,r8,#2 @pu1_ref_main_idx_1 += (two_nt + 2) 447 mov r8,#0 448 449 add r5,r8,#1 @row + 1 450 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 451 and r5,r5,#31 @fract = pos & (31) 452 cmp lr,r5 @if(fract_prev > fract) 453 addgt r10,r10,#1 @pu1_ref_main_idx += 1 454 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 455 vdup.8 d0,r5 @dup_const_fract 456 rsb r4,r5,#32 457 vdup.8 d1,r4 @dup_const_32_fract 458 459 @inner_loop_4 460 vld1.32 {d2[0]},[r10] @ref_main_idx 461 add r8,r8,#1 462 mov lr,r5 @fract_prev = fract 463 464 vld1.32 {d3[0]},[r11] @ref_main_idx_1 465 add r5,r8,#1 @row + 1 466 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 467 and r5,r5,#31 @fract = pos & (31) 468 cmp lr,r5 @if(fract_prev > fract) 469 addgt r10,r10,#1 @pu1_ref_main_idx += 1 470 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 471 472 vdup.8 d6,r5 @dup_const_fract 473 vmull.u8 q2,d2,d1 @vmull_u8(ref_main_idx, dup_const_32_fract) 474 475 rsb r4,r5,#32 476 vdup.8 d7,r4 @dup_const_32_fract 477 vmlal.u8 q2,d3,d0 @vmull_u8(ref_main_idx_1, dup_const_fract) 478 479 vld1.32 {d8[0]},[r10] @ref_main_idx 480 add r8,r8,#1 481 482 vld1.32 {d9[0]},[r11] @ref_main_idx_1 483 vrshrn.i16 d4,q2,#5 @shift_res = vrshrn_n_u16(add_res, 5) 484 485 mov lr,r5 @fract_prev = fract 486 add r5,r8,#1 @row + 1 487 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 488 and r5,r5,#31 @fract = pos & (31) 489 cmp lr,r5 @if(fract_prev > fract) 490 addgt r10,r10,#1 @pu1_ref_main_idx += 1 491 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 492 493 vdup.8 d12,r5 @dup_const_fract 494 vmull.u8 q5,d8,d7 @vmull_u8(ref_main_idx, dup_const_32_fract) 495 496 rsb r4,r5,#32 497 vdup.8 d13,r4 @dup_const_32_fract 498 vmlal.u8 q5,d9,d6 @vmull_u8(ref_main_idx_1, dup_const_fract) 499 500 vld1.32 {d14[0]},[r10] @ref_main_idx 501 add r8,r8,#1 502 503 vst1.32 {d4[0]},[r2],r3 504 vrshrn.i16 d10,q5,#5 @shift_res = vrshrn_n_u16(add_res, 5) 505 506 vld1.32 {d15[0]},[r11] @ref_main_idx_1 507 mov lr,r5 @fract_prev = fract 508 add r5,r8,#1 @row + 1 509 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 510 and r5,r5,#31 @fract = pos & (31) 511 cmp lr,r5 @if(fract_prev > fract) 512 addgt r10,r10,#1 @pu1_ref_main_idx += 1 513 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 514 515 vdup.8 d18,r5 @dup_const_fract 516 vmull.u8 q8,d14,d13 @vmull_u8(ref_main_idx, dup_const_32_fract) 517 518 rsb r4,r5,#32 519 vdup.8 d19,r4 @dup_const_32_fract 520 vmlal.u8 q8,d15,d12 @vmull_u8(ref_main_idx_1, dup_const_fract) 521 522 vld1.32 {d20[0]},[r10] @ref_main_idx 523 524 vst1.32 {d10[0]},[r2],r3 525 vrshrn.i16 d16,q8,#5 @shift_res = vrshrn_n_u16(add_res, 5) 526 vld1.32 {d21[0]},[r11] @ref_main_idx_1 527 528 vmull.u8 q11,d20,d19 @vmull_u8(ref_main_idx, dup_const_32_fract) 529 vmlal.u8 q11,d21,d18 @vmull_u8(ref_main_idx_1, dup_const_fract) 530 531 vst1.32 {d16[0]},[r2],r3 532 vrshrn.i16 d22,q11,#5 @shift_res = vrshrn_n_u16(add_res, 5) 533 534 vst1.32 {d22[0]},[r2],r3 535 536 end_loops: 537 ldmfd sp!,{r4-r12,r15} @reload the registers from sp 538 539 540 541
