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 .equ nt_offset, 104 89 .equ mode_offset, 108 90 91 .text 92 .align 4 93 94 95 96 97 .globl ihevc_intra_pred_luma_mode_27_to_33_a9q 98 .extern gai4_ihevc_ang_table 99 .extern gau1_ihevc_planar_factor 100 101 gai4_ihevc_ang_table_addr: 102 .long gai4_ihevc_ang_table - ulbl1 - 8 103 104 gau1_ihevc_planar_factor_addr: 105 .long gau1_ihevc_planar_factor - ulbl2 - 8 106 107 108 .type ihevc_intra_pred_luma_mode_27_to_33_a9q, %function 109 110 ihevc_intra_pred_luma_mode_27_to_33_a9q: 111 112 stmfd sp!, {r4-r12, r14} @stack stores the values of the arguments 113 vpush {d8 - d15} 114 ldr r4,[sp,#nt_offset] @loads nt 115 ldr r5,[sp,#mode_offset] @loads mode 116 ldr r6,gai4_ihevc_ang_table_addr @loads word32 gai4_ihevc_ang_table[35] 117 ulbl1: 118 add r6,r6,pc 119 120 lsl r7,r4,#1 @two_nt 121 122 add r8,r6,r5,lsl #2 @*gai4_ihevc_ang_table[mode] 123 ldr r9,[r8] @intra_pred_ang = gai4_ihevc_ang_table[mode] 124 ldr r1,gau1_ihevc_planar_factor_addr @used for ((row + 1) * intra_pred_ang) row values 125 ulbl2: 126 add r1,r1,pc 127 add r6,r1,#1 128 129 tst r4,#7 130 add r8,r0,r7 @pu1_ref + two_nt 131 mov lr,#0 @row 132 mov r12,r4 133 bne core_loop_4 134 135 core_loop_8: 136 add r8,r8,#1 @pu1_ref_main_idx += (two_nt + 1) 137 vdup.8 d0,r9 @intra_pred_ang 138 mov r12,r4,lsr #3 @divide by 8 139 140 vmov.i8 d1,#32 141 mul r7,r4,r12 142 143 vmov.i16 q3,#31 144 @lsl r12,r3,#3 145 146 mov r1,r8 147 @sub r12,r12,r4 148 mov r5,r4 149 mov r11,#1 150 151 prologue: 152 vld1.8 {d3},[r6] @loads the row value 153 vmull.u8 q1,d3,d0 @pos = ((row + 1) * intra_pred_ang) 154 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 155 vmovn.i16 d4,q2 156 vshrn.u16 d5,q1,#5 @idx = pos >> 5 157 158 vdup.8 d31,d4[0] 159 add r0,r2,r3 160 161 vmov.u32 lr,d5[0] @(i row)extract idx to the r register 162 163 vdup.8 d29,d4[1] @(ii) 164 and r9,lr,#0xff @(i row) get the last byte 165 166 add r10,r8,r9 @(i row)*pu1_ref[ref_main_idx] 167 168 asr lr,lr,#8 @(ii)shift by 8 169 vld1.8 {d8},[r10],r11 @(i row)ref_main_idx 170 and r9,lr,#0xff @(ii)get the last byte 171 172 asr lr,lr,#8 @(iii) 173 vld1.8 {d9},[r10] @(i row)ref_main_idx_1 174 add r12,r8,r9 @(ii)*pu1_ref[ref_main_idx] 175 176 and r9,lr,#0xff @(iii) 177 vsub.u8 d30,d1,d31 @32-fract(dup_const_32_fract) 178 add r10,r8,r9 @(iii)*pu1_ref[ref_main_idx] 179 180 vld1.8 {d12},[r12],r11 @(ii)ref_main_idx 181 vmull.u8 q5,d8,d30 @(i row)vmull_u8(ref_main_idx, dup_const_32_fract) 182 183 vld1.8 {d13},[r12] @(ii)ref_main_idx_1 184 vmlal.u8 q5,d9,d31 @(i row)vmull_u8(ref_main_idx_1, dup_const_fract) 185 asr lr,lr,#8 @(iv) 186 187 vdup.8 d27,d4[2] @(iii) 188 vsub.u8 d28,d1,d29 @(ii)32-fract(dup_const_32_fract) 189 and r9,lr,#0xff @(iv) 190 191 vdup.8 d25,d4[3] @(iv) 192 vmull.u8 q7,d12,d28 @(ii)vmull_u8(ref_main_idx, dup_const_32_fract) 193 add r12,r8,r9 @(iv)*pu1_ref[ref_main_idx] 194 195 vld1.8 {d16},[r10],r11 @(iii)ref_main_idx 196 vmlal.u8 q7,d13,d29 @(ii)vmull_u8(ref_main_idx_1, dup_const_fract) 197 198 vld1.8 {d17},[r10] @(iii)ref_main_idx_1 199 vrshrn.i16 d10,q5,#5 @(i row)shift_res = vrshrn_n_u16(add_res, 5) 200 201 vld1.8 {d20},[r12],r11 @(iv)ref_main_idx 202 vsub.u8 d26,d1,d27 @(iii)32-fract(dup_const_32_fract) 203 204 vld1.8 {d21},[r12] @(iv)ref_main_idx_1 205 206 vdup.8 d31,d4[4] @(v) 207 vmull.u8 q9,d16,d26 @(iii)vmull_u8(ref_main_idx, dup_const_32_fract) 208 209 vmov.u32 lr,d5[1] @extract idx to the r register 210 vmlal.u8 q9,d17,d27 @(iii)vmull_u8(ref_main_idx_1, dup_const_fract) 211 212 vst1.8 {d10},[r2]! @(i row) 213 vrshrn.i16 d14,q7,#5 @(ii)shift_res = vrshrn_n_u16(add_res, 5) 214 215 and r9,lr,#0xff @(v) 216 vdup.8 d29,d4[5] @(vi) 217 add r10,r8,r9 @(v)*pu1_ref[ref_main_idx] 218 219 vld1.8 {d8},[r10],r11 @(v)ref_main_idx 220 vsub.u8 d24,d1,d25 @(iv)32-fract(dup_const_32_fract) 221 222 asr lr,lr,#8 @(vi) 223 vmull.u8 q11,d20,d24 @(iv)vmull_u8(ref_main_idx, dup_const_32_fract) 224 and r9,lr,#0xff @(vi) 225 226 vld1.8 {d9},[r10] @(v)ref_main_idx_1 227 vmlal.u8 q11,d21,d25 @(iv)vmull_u8(ref_main_idx_1, dup_const_fract) 228 229 vst1.8 {d14},[r0],r3 @(ii) 230 vrshrn.i16 d18,q9,#5 @(iii)shift_res = vrshrn_n_u16(add_res, 5) 231 232 add r12,r8,r9 @(vi)*pu1_ref[ref_main_idx] 233 vdup.8 d27,d4[6] @(vii) 234 asr lr,lr,#8 @(vii) 235 236 and r9,lr,#0xff @(vii) 237 vsub.u8 d30,d1,d31 @(v)32-fract(dup_const_32_fract) 238 add r10,r8,r9 @(vii)*pu1_ref[ref_main_idx] 239 240 vld1.8 {d12},[r12],r11 @(vi)ref_main_idx 241 vmull.u8 q5,d8,d30 @(v)vmull_u8(ref_main_idx, dup_const_32_fract) 242 243 vld1.8 {d13},[r12] @(vi)ref_main_idx_1 244 vmlal.u8 q5,d9,d31 @(v)vmull_u8(ref_main_idx_1, dup_const_fract) 245 246 vst1.8 {d18},[r0],r3 @(iii) 247 vrshrn.i16 d22,q11,#5 @(iv)shift_res = vrshrn_n_u16(add_res, 5) 248 249 asr lr,lr,#8 @(viii) 250 vdup.8 d25,d4[7] @(viii) 251 and r9,lr,#0xff @(viii) 252 253 vld1.8 {d16},[r10],r11 @(vii)ref_main_idx 254 vsub.u8 d28,d1,d29 @(vi)32-fract(dup_const_32_fract) 255 256 vld1.8 {d17},[r10] @(vii)ref_main_idx_1 257 vmull.u8 q7,d12,d28 @(vi)vmull_u8(ref_main_idx, dup_const_32_fract) 258 259 add r12,r8,r9 @(viii)*pu1_ref[ref_main_idx] 260 vmlal.u8 q7,d13,d29 @(vi)vmull_u8(ref_main_idx_1, dup_const_fract) 261 subs r4,r4,#8 262 263 vst1.8 {d22},[r0],r3 @(iv) 264 vrshrn.i16 d10,q5,#5 @(v)shift_res = vrshrn_n_u16(add_res, 5) 265 266 vld1.8 {d20},[r12],r11 @(viii)ref_main_idx 267 vsub.u8 d26,d1,d27 @(vii)32-fract(dup_const_32_fract) 268 269 vld1.8 {d21},[r12] @(viii)ref_main_idx_1 270 vmull.u8 q9,d16,d26 @(vii)vmull_u8(ref_main_idx, dup_const_32_fract) 271 272 addgt r8,r8,#8 273 vmlal.u8 q9,d17,d27 @(vii)vmull_u8(ref_main_idx_1, dup_const_fract) 274 subgt r7,r7,#8 275 276 vst1.8 {d10},[r0],r3 @(v) 277 vrshrn.i16 d14,q7,#5 @(vi)shift_res = vrshrn_n_u16(add_res, 5) 278 279 beq epilogue 280 281 vld1.8 {d5},[r6] @loads the row value 282 vmull.u8 q1,d5,d0 @pos = ((row + 1) * intra_pred_ang) 283 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 284 vmovn.i16 d4,q2 285 vshrn.u16 d3,q1,#5 @idx = pos >> 5 286 vmov.u32 lr,d3[0] @(i)extract idx to the r register 287 and r9,lr,#0xff @(i) 288 add r10,r8,r9 @(i)*pu1_ref[ref_main_idx] 289 290 kernel_8_rows: 291 asr lr,lr,#8 @(ii) 292 vdup.8 d31,d4[0] 293 subs r4,r4,#8 294 295 vld1.8 {d8},[r10],r11 @(i)ref_main_idx 296 vsub.u8 d24,d1,d25 @(viii)32-fract(dup_const_32_fract) 297 and r9,lr,#0xff @(ii) 298 addle r6,r6,#8 @increment the row value 299 300 vld1.8 {d9},[r10] @(i)ref_main_idx_1 301 vmull.u8 q11,d20,d24 @(viii)vmull_u8(ref_main_idx, dup_const_32_fract) 302 add r12,r8,r9 @(ii)*pu1_ref[ref_main_idx] 303 304 vld1.8 {d5},[r6] @loads the row value 305 vmlal.u8 q11,d21,d25 @(viii)vmull_u8(ref_main_idx_1, dup_const_fract) 306 asr lr,lr,#8 @(iii) 307 308 vdup.8 d29,d4[1] @(ii) 309 vrshrn.i16 d18,q9,#5 @(vii)shift_res = vrshrn_n_u16(add_res, 5) 310 and r9,lr,#0xff @(iii) 311 312 vst1.8 {d14},[r0],r3 @(vi) 313 vsub.u8 d30,d1,d31 @(i)32-fract(dup_const_32_fract) 314 add r10,r8,r9 @(iii)*pu1_ref[ref_main_idx] 315 316 vld1.8 {d12},[r12],r11 @(ii)ref_main_idx 317 vmull.u8 q5,d8,d30 @(i)vmull_u8(ref_main_idx, dup_const_32_fract) 318 asr lr,lr,#8 @(iv) 319 320 vld1.8 {d13},[r12] @(ii)ref_main_idx_1 321 vmlal.u8 q5,d9,d31 @(i)vmull_u8(ref_main_idx_1, dup_const_fract) 322 and r9,lr,#0xff @(iv) 323 324 vmov.u32 lr,d3[1] @extract idx to the r register 325 vrshrn.i16 d22,q11,#5 @(viii)shift_res = vrshrn_n_u16(add_res, 5) 326 327 vdup.8 d27,d4[2] @(iii) 328 vsub.u8 d28,d1,d29 @(ii)32-fract(dup_const_32_fract) 329 movle r4,r5 @reload nt 330 331 vld1.8 {d16},[r10],r11 @(iii)ref_main_idx 332 vmull.u8 q7,d12,d28 @(ii)vmull_u8(ref_main_idx, dup_const_32_fract) 333 add r12,r8,r9 @(iv)*pu1_ref[ref_main_idx] 334 335 vst1.8 {d18},[r0],r3 @(vii) 336 vmlal.u8 q7,d13,d29 @(ii)vmull_u8(ref_main_idx_1, dup_const_fract) 337 338 vld1.8 {d17},[r10] @(iii)ref_main_idx_1 339 vrshrn.i16 d10,q5,#5 @(i)shift_res = vrshrn_n_u16(add_res, 5) 340 341 vdup.8 d25,d4[3] @(iv) 342 vmull.u8 q1,d5,d0 @pos = ((row + 1) * intra_pred_ang) 343 344 vst1.8 {d22},[r0] @(viii) 345 vsub.u8 d26,d1,d27 @(iii)32-fract(dup_const_32_fract) 346 347 vld1.8 {d20},[r12],r11 @(iv)ref_main_idx 348 vmull.u8 q9,d16,d26 @(iii)vmull_u8(ref_main_idx, dup_const_32_fract) 349 add r0,r2,r3 350 351 vld1.8 {d21},[r12] @(iv)ref_main_idx_1 352 vmlal.u8 q9,d17,d27 @(iii)vmull_u8(ref_main_idx_1, dup_const_fract) 353 and r9,lr,#0xff @(v) 354 355 vdup.8 d31,d4[4] @(v) 356 vrshrn.i16 d14,q7,#5 @(ii)shift_res = vrshrn_n_u16(add_res, 5) 357 add r10,r8,r9 @(v)*pu1_ref[ref_main_idx] 358 359 vst1.8 {d10},[r2]! @(i) 360 vsub.u8 d24,d1,d25 @(iv)32-fract(dup_const_32_fract) 361 asr lr,lr,#8 @(vi) 362 363 vdup.8 d29,d4[5] @(vi) 364 vmull.u8 q11,d20,d24 @(iv)vmull_u8(ref_main_idx, dup_const_32_fract) 365 and r9,lr,#0xff @(vi) 366 367 vdup.8 d27,d4[6] @(vii) 368 vmlal.u8 q11,d21,d25 @(iv)vmull_u8(ref_main_idx_1, dup_const_fract) 369 add r12,r8,r9 @(vi)*pu1_ref[ref_main_idx] 370 371 vdup.8 d25,d4[7] @(viii) 372 vrshrn.i16 d18,q9,#5 @(iii)shift_res = vrshrn_n_u16(add_res, 5) 373 asr lr,lr,#8 @(vii) 374 375 vld1.8 {d8},[r10],r11 @(v)ref_main_idx 376 vand q2,q1,q3 @dup_const_fract(fract = pos & (31)) 377 and r9,lr,#0xff @(vii) 378 379 vld1.8 {d9},[r10] @(v)ref_main_idx_1 380 vshrn.u16 d3,q1,#5 @idx = pos >> 5 381 asr lr,lr,#8 @(viii) 382 383 vst1.8 {d14},[r0],r3 @(ii) 384 vrshrn.i16 d22,q11,#5 @(iv)shift_res = vrshrn_n_u16(add_res, 5) 385 add r10,r8,r9 @(vii)*pu1_ref[ref_main_idx] 386 387 vld1.8 {d12},[r12],r11 @(vi)ref_main_idx 388 vsub.u8 d30,d1,d31 @(v)32-fract(dup_const_32_fract) 389 and r9,lr,#0xff @(viii) 390 391 vld1.8 {d13},[r12] @(vi)ref_main_idx_1 392 vmull.u8 q5,d8,d30 @(v)vmull_u8(ref_main_idx, dup_const_32_fract) 393 394 vmov.u32 lr,d3[0] @(i)extract idx to the r register 395 vmlal.u8 q5,d9,d31 @(v)vmull_u8(ref_main_idx_1, dup_const_fract) 396 add r12,r8,r9 @(viii)*pu1_ref[ref_main_idx] 397 398 vld1.8 {d16},[r10],r11 @(vii)ref_main_idx 399 vsub.u8 d28,d1,d29 @(vi)32-fract(dup_const_32_fract) 400 401 vst1.8 {d18},[r0],r3 @(iii) 402 vmull.u8 q7,d12,d28 @(vi)vmull_u8(ref_main_idx, dup_const_32_fract) 403 movle r8,r1 @reload the source to pu1_src+2nt 404 405 vld1.8 {d17},[r10] @(vii)ref_main_idx_1 406 vmlal.u8 q7,d13,d29 @(vi)vmull_u8(ref_main_idx_1, dup_const_fract) 407 addgt r8,r8,#8 @increment the source next set 8 columns in same row 408 409 vld1.8 {d20},[r12],r11 @(viii)ref_main_idx 410 vrshrn.i16 d10,q5,#5 @(v)shift_res = vrshrn_n_u16(add_res, 5) 411 412 vld1.8 {d21},[r12] @(viii)ref_main_idx_1 413 vsub.u8 d26,d1,d27 @(vii)32-fract(dup_const_32_fract) 414 lslle r12,r3,#3 415 416 vst1.8 {d22},[r0],r3 @(iv) 417 vmull.u8 q9,d16,d26 @(vii)vmull_u8(ref_main_idx, dup_const_32_fract) 418 suble r12,r12,r5 419 420 vst1.8 {d10},[r0],r3 @(v) 421 vmlal.u8 q9,d17,d27 @(vii)vmull_u8(ref_main_idx_1, dup_const_fract) 422 addle r2,r2,r12 @increment the dst pointer to 8*dst_strd - nt 423 424 vmovn.i16 d4,q2 425 vrshrn.i16 d14,q7,#5 @(vi)shift_res = vrshrn_n_u16(add_res, 5) 426 and r9,lr,#0xff @(i) 427 428 subs r7,r7,#8 429 add r10,r8,r9 @(i)*pu1_ref[ref_main_idx] 430 431 bne kernel_8_rows 432 433 epilogue: 434 vst1.8 {d14},[r0],r3 @(vi) 435 vrshrn.i16 d18,q9,#5 @(vii)shift_res = vrshrn_n_u16(add_res, 5) 436 437 vsub.u8 d24,d1,d25 @(viii)32-fract(dup_const_32_fract) 438 vmull.u8 q11,d20,d24 @(viii)vmull_u8(ref_main_idx, dup_const_32_fract) 439 vmlal.u8 q11,d21,d25 @(viii)vmull_u8(ref_main_idx_1, dup_const_fract) 440 441 vst1.8 {d18},[r0],r3 @(vii) 442 vrshrn.i16 d22,q11,#5 @(viii)shift_res = vrshrn_n_u16(add_res, 5) 443 444 vst1.8 {d22},[r0],r3 @(viii) 445 b end_loops 446 447 core_loop_4: 448 add r10,r8,#1 @pu1_ref_main_idx += (two_nt + 1) 449 add r11,r8,#2 @pu1_ref_main_idx_1 += (two_nt + 2) 450 mov r8,#0 451 452 add r5,r8,#1 @row + 1 453 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 454 and r5,r5,#31 @fract = pos & (31) 455 cmp lr,r5 @if(fract_prev > fract) 456 addgt r10,r10,#1 @pu1_ref_main_idx += 1 457 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 458 vdup.8 d0,r5 @dup_const_fract 459 rsb r4,r5,#32 460 vdup.8 d1,r4 @dup_const_32_fract 461 462 @inner_loop_4 463 vld1.32 {d2[0]},[r10] @ref_main_idx 464 add r8,r8,#1 465 mov lr,r5 @fract_prev = fract 466 467 vld1.32 {d3[0]},[r11] @ref_main_idx_1 468 add r5,r8,#1 @row + 1 469 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 470 and r5,r5,#31 @fract = pos & (31) 471 cmp lr,r5 @if(fract_prev > fract) 472 addgt r10,r10,#1 @pu1_ref_main_idx += 1 473 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 474 475 vdup.8 d6,r5 @dup_const_fract 476 vmull.u8 q2,d2,d1 @vmull_u8(ref_main_idx, dup_const_32_fract) 477 478 rsb r4,r5,#32 479 vdup.8 d7,r4 @dup_const_32_fract 480 vmlal.u8 q2,d3,d0 @vmull_u8(ref_main_idx_1, dup_const_fract) 481 482 vld1.32 {d8[0]},[r10] @ref_main_idx 483 add r8,r8,#1 484 485 vld1.32 {d9[0]},[r11] @ref_main_idx_1 486 vrshrn.i16 d4,q2,#5 @shift_res = vrshrn_n_u16(add_res, 5) 487 488 mov lr,r5 @fract_prev = fract 489 add r5,r8,#1 @row + 1 490 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 491 and r5,r5,#31 @fract = pos & (31) 492 cmp lr,r5 @if(fract_prev > fract) 493 addgt r10,r10,#1 @pu1_ref_main_idx += 1 494 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 495 496 vdup.8 d12,r5 @dup_const_fract 497 vmull.u8 q5,d8,d7 @vmull_u8(ref_main_idx, dup_const_32_fract) 498 499 rsb r4,r5,#32 500 vdup.8 d13,r4 @dup_const_32_fract 501 vmlal.u8 q5,d9,d6 @vmull_u8(ref_main_idx_1, dup_const_fract) 502 503 vld1.32 {d14[0]},[r10] @ref_main_idx 504 add r8,r8,#1 505 506 vst1.32 {d4[0]},[r2],r3 507 vrshrn.i16 d10,q5,#5 @shift_res = vrshrn_n_u16(add_res, 5) 508 509 vld1.32 {d15[0]},[r11] @ref_main_idx_1 510 mov lr,r5 @fract_prev = fract 511 add r5,r8,#1 @row + 1 512 mul r5,r5,r9 @pos = ((row + 1) * intra_pred_ang) 513 and r5,r5,#31 @fract = pos & (31) 514 cmp lr,r5 @if(fract_prev > fract) 515 addgt r10,r10,#1 @pu1_ref_main_idx += 1 516 add r11,r10,#1 @pu1_ref_main_idx_1 += 1 517 518 vdup.8 d18,r5 @dup_const_fract 519 vmull.u8 q8,d14,d13 @vmull_u8(ref_main_idx, dup_const_32_fract) 520 521 rsb r4,r5,#32 522 vdup.8 d19,r4 @dup_const_32_fract 523 vmlal.u8 q8,d15,d12 @vmull_u8(ref_main_idx_1, dup_const_fract) 524 525 vld1.32 {d20[0]},[r10] @ref_main_idx 526 527 vst1.32 {d10[0]},[r2],r3 528 vrshrn.i16 d16,q8,#5 @shift_res = vrshrn_n_u16(add_res, 5) 529 vld1.32 {d21[0]},[r11] @ref_main_idx_1 530 531 vmull.u8 q11,d20,d19 @vmull_u8(ref_main_idx, dup_const_32_fract) 532 vmlal.u8 q11,d21,d18 @vmull_u8(ref_main_idx_1, dup_const_fract) 533 534 vst1.32 {d16[0]},[r2],r3 535 vrshrn.i16 d22,q11,#5 @shift_res = vrshrn_n_u16(add_res, 5) 536 537 vst1.32 {d22[0]},[r2],r3 538 539 end_loops: 540 vpop {d8 - d15} 541 ldmfd sp!,{r4-r12,r15} @reload the registers from sp 542 543 544 545
