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_sao_edge_offset_class0_chroma.s 22@* 23@* ,:brief 24@* Contains function definitions for inter prediction interpolation. 25@* Functions are coded using NEON intrinsics and can be compiled using@ ARM 26@* RVCT 27@* 28@* ,:author 29@* Parthiban V 30@* 31@* ,:par List of Functions: 32@* 33@* 34@* ,:remarks 35@* None 36@* 37@******************************************************************************* 38@*/ 39@void ihevc_sao_edge_offset_class0_chroma(UWORD8 *pu1_src, 40@ WORD32 src_strd, 41@ UWORD8 *pu1_src_left, 42@ UWORD8 *pu1_src_top, 43@ UWORD8 *pu1_src_top_left, 44@ UWORD8 *pu1_src_top_right, 45@ UWORD8 *pu1_src_bot_left, 46@ UWORD8 *pu1_avail, 47@ WORD8 *pi1_sao_offset_u, 48@ WORD8 *pi1_sao_offset_v, 49@ WORD32 wd, 50@ 51@**************Variables Vs Registers***************************************** 52@r0 => *pu1_src 53@r1 => src_strd 54@r2 => *pu1_src_left 55@r3 => *pu1_src_top 56@r4 => *pu1_src_top_left 57@r7 => *pu1_avail 58@r8 => *pi1_sao_offset_u 59@r5 => *pi1_sao_offset_v 60@r9 => wd 61@r10=> ht 62 63.equ pu1_src_top_left_offset, 104 64.equ pu1_src_top_right_offset, 108 65.equ pu1_src_bot_left_offset, 112 66.equ pu1_avail_offset, 116 67.equ pi1_sao_u_offset, 120 68.equ pi1_sao_v_offset, 124 69.equ wd_offset, 128 70.equ ht_offset, 132 71 72.text 73.p2align 2 74 75.extern gi1_table_edge_idx 76.globl ihevc_sao_edge_offset_class0_chroma_a9q 77 78gi1_table_edge_idx_addr: 79.long gi1_table_edge_idx - ulbl1 - 8 80 81ihevc_sao_edge_offset_class0_chroma_a9q: 82 83 84 STMFD sp!, {r4-r12, r14} @stack stores the values of the arguments 85 vpush {d8 - d15} 86 87 LDR r9,[sp,#wd_offset] @Loads wd 88 89 LDR r4,[sp,#pu1_src_top_left_offset] @Loads pu1_src_top_left 90 ADD r11,r3,r9 @pu1_src_top[wd] 91 92 LDR r10,[sp,#ht_offset] @Loads ht 93 VMOV.I8 Q1,#2 @const_2 = vdupq_n_s8(2) 94 LDRH r12,[r11,#-2] @pu1_src_top[wd - 1] 95 96 LDR r7,[sp,#pu1_avail_offset] @Loads pu1_avail 97 VMOV.I16 Q2,#0 @const_min_clip = vdupq_n_s16(0) 98 STRH r12,[r4] @*pu1_src_top_left = pu1_src_top[wd - 1] 99 100 LDR r8,[sp,#pi1_sao_u_offset] @Loads pi1_sao_offset_u 101 VMOV.I16 Q3,#255 @const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) 102 SUB r4,r10,#1 @(ht - 1) 103 104 LDR r14, gi1_table_edge_idx_addr @table pointer 105ulbl1: 106 add r14,r14,pc 107 VMOV.S8 Q4,#0xFF @au1_mask = vdupq_n_s8(-1) 108 MUL r4,r4,r1 @(ht - 1) * src_strd 109 110 LDR r5,[sp,#pi1_sao_v_offset] @Loads pi1_sao_offset_v 111 VLD1.8 D11,[r8] @offset_tbl = vld1_s8(pi1_sao_offset_u) 112 ADD r4,r4,r0 @pu1_src[(ht - 1) * src_strd] 113 114 MOV r6,r0 @pu1_src_org 115 VLD1.8 D10,[r14] @edge_idx_tbl = vld1_s8(gi1_table_edge_idx) 116 MOV r12,r9 @Move wd to r12 for loop count 117 118SRC_TOP_LOOP: @wd is always multiple of 8 119 VLD1.8 D0,[r4]! @Load pu1_src[(ht - 1) * src_strd + col] 120 SUBS r12,r12,#8 @Decrement the loop counter by 8 121 VST1.8 D0,[r3]! @Store to pu1_src_top[col] 122 BNE SRC_TOP_LOOP 123 ADD r6,r6,#14 @pu1_src_org[14] 124 125 MOV r3,r2 @pu1_src_left backup to reload later 126 VLD1.8 D0,[r5] @offset_tbl = vld1_s8(pi1_sao_offset_v) 127 CMP r9,#16 @Compare wd with 16 128 129 BLT WIDTH_RESIDUE @If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case 130 131 MOV r8,r9 @move wd to r8 for loop count 132 133WIDTH_LOOP_16: 134 CMP r8,r9 @if(col == wd) 135 BNE AU1_MASK_FF @jump to else part 136 LDRB r12,[r7] @pu1_avail[0] 137 VMOV.8 D8[0],r12 @vsetq_lane_s8(pu1_avail[0], au1_mask, 0) 138 VMOV.8 D8[1],r12 @vsetq_lane_s8(pu1_avail[0], au1_mask, 1) 139 B SKIP_AU1_MASK_FF @Skip the else part 140 141AU1_MASK_FF: 142 MOV r12,#-1 @move -1 to r12 143 VMOV.16 D8[0],r12 @au1_mask = vsetq_lane_s8(-1, au1_mask, 0) 144 145SKIP_AU1_MASK_FF: 146 CMP r8,#16 @If col == 16 147 BNE SKIP_MASKING_IF_NOT16 @If not skip masking 148 LDRB r12,[r7,#1] @pu1_avail[1] 149 VMOV.8 D9[6],r12 @au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 14) 150 VMOV.8 D9[7],r12 @au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 151 152SKIP_MASKING_IF_NOT16: 153 MOV r12,r0 @pu1_src_cpy = pu1_src 154 MOV r4,r10 @move ht to r4 for loop count 155 156PU1_SRC_LOOP: 157 LDRH r11,[r2] @load pu1_src_left since ht - row =0 when it comes first pu1_src_left is incremented later 158 VLD1.8 D12,[r12]! @pu1_cur_row = vld1q_u8(pu1_src_cpy) 159 VLD1.8 D13,[r12],r1 @pu1_cur_row = vld1q_u8(pu1_src_cpy) 160 SUB r12,#8 161 SUB r5,r9,r8 @wd - col 162 163 SUB r14,r10,r4 @ht - row 164 VMOV.16 D15[3],r11 @vsetq_lane_u16(pu1_src_left[ht - row], pu1_cur_row_tmp, 14,15) 165 MUL r14,r14,r1 @(ht - row) * src_strd 166 167 VLD1.8 D30,[r12]! @II Iteration pu1_cur_row = vld1q_u8(pu1_src_cpy) 168 VLD1.8 D31,[r12] @II Iteration pu1_cur_row = vld1q_u8(pu1_src_cpy) 169 SUB r12,#8 170 VEXT.8 Q7,Q7,Q6,#14 @pu1_cur_row_tmp = vextq_u8(pu1_cur_row_tmp, pu1_cur_row, 14) 171 SUB r12,r12,r1 172 173 LDRH r11,[r2,#2] @II load pu1_src_left since ht - row =0 174 VCGT.U8 Q8,Q6,Q7 @vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 175 ADD r5,r14,r5 @(ht - row) * src_strd + (wd - col) 176 177 VMOV.16 D29[3],r11 @II vsetq_lane_u16(pu1_src_left[ht - row], pu1_cur_row_tmp, 14,15) 178 VCLT.U8 Q9,Q6,Q7 @vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 179 180 LDRH r14,[r6,r5] @pu1_src_org[(ht - row) * src_strd + 14 + (wd - col)] 181 VSUB.U8 Q10,Q9,Q8 @sign_left = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 182 SUB r4,r4,#1 183 184 LDRB r11,[r12,#16] @pu1_src_cpy[16] 185 VEXT.8 Q14,Q14,Q15,#14 @II pu1_cur_row_tmp = vextq_u8(pu1_cur_row_tmp, pu1_cur_row, 14) 186 187 VMOV.8 D14[0],r11 @pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[16], pu1_cur_row_tmp, 0) 188 VCGT.U8 Q13,Q15,Q14 @II vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 189 190 LDRB r11,[r12,#17] @pu1_src_cpy[17] 191 VCLT.U8 Q12,Q15,Q14 @II vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 192 STRH r14,[r2],#2 @pu1_src_left[(ht - row)] = au1_src_left_tmp[(ht - row)] 193 194 ADD r12,r12,r1 195 VMOV.8 D14[1],r11 @pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[17], pu1_cur_row_tmp, 1) 196 LDRB r11,[r12,#16] @II pu1_src_cpy[16] 197 198 VEXT.8 Q7,Q6,Q7,#2 @pu1_cur_row_tmp = vextq_u8(pu1_cur_row, pu1_cur_row_tmp, 2) 199 VMOV.8 D28[0],r11 @II pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[16], pu1_cur_row_tmp, 0) 200 201 LDRB r11,[r12,#17] @II pu1_src_cpy[17] 202 VCGT.U8 Q8,Q6,Q7 @vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 203 SUB r12,r12,r1 204 205 VCLT.U8 Q9,Q6,Q7 @vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 206 VMOV.8 D28[1],r11 @II pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[17], pu1_cur_row_tmp, 1) 207 208 VSUB.U8 Q11,Q9,Q8 @sign_right = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 209 VEXT.8 Q14,Q15,Q14,#2 @II pu1_cur_row_tmp = vextq_u8(pu1_cur_row, pu1_cur_row_tmp, 2) 210 211 VADD.U8 Q7,Q1,Q10 @edge_idx = vaddq_s8(const_2, sign_left) 212 213 VADD.U8 Q7,Q7,Q11 @edge_idx = vaddq_s8(edge_idx, sign_right) 214 VTBL.8 D14,{D10},D14 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 215 VSUB.U8 Q10,Q12,Q13 @II sign_left = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 216 217 VCGT.U8 Q13,Q15,Q14 @II vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 218 VTBL.8 D15,{D10},D15 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 219 VCLT.U8 Q12,Q15,Q14 @II vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 220 221 VAND Q7,Q7,Q4 @edge_idx = vandq_s8(edge_idx, au1_mask) 222 VUZP.8 D14,D15 223 224 VSUB.U8 Q11,Q12,Q13 @II sign_right = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 225 VTBL.8 D16,{D11},D14 @offset = vtbl1_s8(offset_tbl_u, vget_low_s8(edge_idx)) 226 VADD.U8 Q12,Q1,Q10 @II edge_idx = vaddq_s8(const_2, sign_left) 227 228 VMOVL.U8 Q9,D12 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 229 VTBL.8 D17,{D0},D15 230 VADD.U8 Q12,Q12,Q11 @II edge_idx = vaddq_s8(edge_idx, sign_right) 231 232 VZIP.S8 D16,D17 233 VTBL.8 D24,{D10},D24 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 234 VMOVL.U8 Q6,D13 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 235 236 VADDW.S8 Q9,Q9,D16 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 237 VTBL.8 D25,{D10},D25 @II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 238 VMAX.S16 Q9,Q9,Q2 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 239 240 VAND Q12,Q12,Q4 @II edge_idx = vandq_s8(edge_idx, au1_mask) 241 VMIN.U16 Q9,Q9,Q3 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 242 VUZP.8 D24,D25 @II 243 244 VADDW.S8 Q6,Q6,D17 @pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 245 VTBL.8 D26,{D11},D24 @II offset = vtbl1_s8(offset_tbl_u, vget_low_s8(edge_idx)) 246 VMAX.S16 Q6,Q6,Q2 @pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 247 248 VMIN.U16 Q6,Q6,Q3 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 249 VTBL.8 D27,{D0},D25 @II 250 VMOVN.I16 D14,Q9 @vmovn_s16(pi2_tmp_cur_row.val[0]) 251 252 VMOVN.I16 D15,Q6 @vmovn_s16(pi2_tmp_cur_row.val[1]) 253 VZIP.S8 D26,D27 @II 254 255 SUB r5,r9,r8 @II wd - col 256 VMOVL.U8 Q14,D30 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 257 SUB r14,r10,r4 @II ht - row 258 259 MUL r14,r14,r1 @II (ht - row) * src_strd 260 VADDW.S8 Q14,Q14,D26 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 261 ADD r5,r14,r5 @II (ht - row) * src_strd + (wd - col) 262 263 LDRH r14,[r6,r5] @II pu1_src_org[(ht - row) * src_strd + 14 + (wd - col)] 264 VMAX.S16 Q14,Q14,Q2 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 265 266 STRH r14,[r2],#2 @II pu1_src_left[(ht - row)] = au1_src_left_tmp[(ht - row)] 267 VMIN.U16 Q14,Q14,Q3 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 268 269 VMOVL.U8 Q15,D31 @II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 270 271 VADDW.S8 Q15,Q15,D27 @II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 272 VST1.8 {D14,D15},[r12],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 273 274 VMAX.S16 Q15,Q15,Q2 @II pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 275 SUBS r4,r4,#1 @Decrement row by 1 276 VMIN.U16 Q15,Q15,Q3 @II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 277 278 VMOVN.I16 D28,Q14 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 279 VMOVN.I16 D29,Q15 @II vmovn_s16(pi2_tmp_cur_row.val[1]) 280 281 VST1.8 {D28,D29},[r12],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 282 283 BNE PU1_SRC_LOOP @If not equal jump to the inner loop 284 285 ADD r0,r0,#16 @pu1_src += 16 286 287 SUBS r8,r8,#16 @Decrement column by 16 288 CMP r8,#8 @Check whether residue remains 289 MOV r2,r3 @Reload pu1_src_left 290 BEQ WIDTH_RESIDUE @If residue remains jump to residue loop 291 BGT WIDTH_LOOP_16 @If not equal jump to width_loop 292 BLT END_LOOPS @Jump to end function 293 294WIDTH_RESIDUE: 295 SUB r6,r6,#14 296 AND r8,r9,#0xF @wd_rem = wd & 0xF 297 CMP r8,#0 @Residue check 298 BEQ END_LOOPS @No Residue jump to end function 299 300 CMP r8,r9 @if(wd_rem == wd) 301 BNE AU1_MASK_FF_RESIDUE @jump to else part 302 LDRB r12,[r7] @pu1_avail[0] 303 VMOV.8 D8[0],r12 @vsetq_lane_s8(pu1_avail[0], au1_mask, 0) 304 VMOV.8 D8[1],r12 @vsetq_lane_s8(pu1_avail[0], au1_mask, 0) 305 B SKIP_AU1_MASK_FF_RESIDUE @Skip the else part 306 307AU1_MASK_FF_RESIDUE: 308 MOV r12,#-1 @move -1 to r12 309 VMOV.16 D8[0],r12 @au1_mask = vsetq_lane_s8(-1, au1_mask, 0) 310 311SKIP_AU1_MASK_FF_RESIDUE: 312 LDRB r12,[r7,#1] @pu1_avail[1] 313 VMOV.8 D8[6],r12 @au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 314 VMOV.8 D8[7],r12 @au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 315 316 MOV r12,r0 @pu1_src_cpy = pu1_src 317 MOV r4,r10 @move ht to r4 for loop count 318 319PU1_SRC_LOOP_RESIDUE: 320 LDRH r11,[r2] @load pu1_src_left 321 VLD1.8 D12,[r12]! @pu1_cur_row = vld1q_u8(pu1_src_cpy) 322 VLD1.8 D13,[r12],r1 @pu1_cur_row = vld1q_u8(pu1_src_cpy) 323 SUB r12,#8 324 SUB r5,r9,#2 @wd - 2 325 326 SUB r14,r10,r4 @(ht - row) 327 VMOV.16 D15[3],r11 @vsetq_lane_u8(pu1_src_left[ht - row], pu1_cur_row_tmp, 15) 328 LSL r14,r14,#1 @(ht - row) * 2 329 330 VLD1.8 D30,[r12]! @II pu1_cur_row = vld1q_u8(pu1_src_cpy) 331 VLD1.8 D31,[r12] @II pu1_cur_row = vld1q_u8(pu1_src_cpy) 332 SUB r12,#8 333 VEXT.8 Q7,Q7,Q6,#14 @pu1_cur_row_tmp = vextq_u8(pu1_cur_row_tmp, pu1_cur_row, 15) 334 SUB r12,r12,r1 335 336 LDRH r11,[r2,#2] @II load pu1_src_left 337 VCGT.U8 Q8,Q6,Q7 @vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 338 MUL r14,r14,r1 @(ht - row) * 2 * src_strd 339 340 VCLT.U8 Q9,Q6,Q7 @vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 341 VMOV.16 D29[3],r11 @II vsetq_lane_u8(pu1_src_left[ht - row], pu1_cur_row_tmp, 15) 342 343 LDRB r11,[r12,#16] @pu1_src_cpy[16] 344 VSUB.U8 Q10,Q9,Q8 @sign_left = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 345 ADD r5,r14,r5 @(ht - row) * 2 * src_strd + (wd - 2) 346 347 VMOV.8 D14[0],r11 @pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[16], pu1_cur_row_tmp, 0) 348 VEXT.8 Q14,Q14,Q15,#14 @II pu1_cur_row_tmp = vextq_u8(pu1_cur_row_tmp, pu1_cur_row, 15) 349 350 LDRB r11,[r12,#17] @pu1_src_cpy[17] 351 VCGT.U8 Q13,Q15,Q14 @II vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 352 LDRH r14,[r6, r5] @pu1_src_org[(ht - row) * 2* src_strd + (wd - 2)] 353 354 VMOV.8 D14[1],r11 @pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[17], pu1_cur_row_tmp, 1) 355 VCLT.U8 Q12,Q15,Q14 @II vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 356 ADD r12,r12,r1 357 358 STRH r14,[r2],#2 @pu1_src_left[(ht - row) * 2] = au1_src_left_tmp[(ht - row) * 2] 359 VEXT.8 Q7,Q6,Q7,#2 @pu1_cur_row_tmp = vextq_u8(pu1_cur_row, pu1_cur_row_tmp, 1) 360 LDRB r11,[r12,#16] @II pu1_src_cpy[16] 361 362 VCGT.U8 Q8,Q6,Q7 @vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 363 VMOV.8 D28[0],r11 @II pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[16], pu1_cur_row_tmp, 0) 364 365 LDRB r11,[r12,#17] @II pu1_src_cpy[17] 366 VCLT.U8 Q9,Q6,Q7 @vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 367 SUB r4,r4,#1 @II Decrement row by 1 368 369 VSUB.U8 Q11,Q9,Q8 @sign_right = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 370 VMOV.8 D28[1],r11 @II pu1_cur_row_tmp = vsetq_lane_u8(pu1_src_cpy[17], pu1_cur_row_tmp, 1) 371 SUB r12,r12,r1 372 373 VADD.U8 Q7,Q1,Q10 @edge_idx = vaddq_s8(const_2, sign_left) 374 VEXT.8 Q14,Q15,Q14,#2 @II pu1_cur_row_tmp = vextq_u8(pu1_cur_row, pu1_cur_row_tmp, 1) 375 376 VADD.U8 Q7,Q7,Q11 @edge_idx = vaddq_s8(edge_idx, sign_right) 377 378 VSUB.U8 Q10,Q12,Q13 @II sign_left = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 379 VTBL.8 D14,{D10},D14 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 380 VCGT.U8 Q13,Q15,Q14 @II vcgtq_u8(pu1_cur_row, pu1_cur_row_tmp) 381 382 VCLT.U8 Q12,Q15,Q14 @II vcltq_u8(pu1_cur_row, pu1_cur_row_tmp) 383 VTBL.8 D15,{D10},D15 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 384 VSUB.U8 Q11,Q12,Q13 @II sign_right = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 385 386 VAND Q7,Q7,Q4 @edge_idx = vandq_s8(edge_idx, au1_mask) 387 VUZP.8 D14,D15 388 389 VADD.U8 Q14,Q1,Q10 @II edge_idx = vaddq_s8(const_2, sign_left) 390 VTBL.8 D16,{D11},D14 @offset = vtbl1_s8(offset_tbl_u, vget_low_s8(edge_idx)) 391 VADD.U8 Q14,Q14,Q11 @II edge_idx = vaddq_s8(edge_idx, sign_right) 392 393 VMOVL.U8 Q9,D12 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 394 VTBL.8 D17,{D0},D15 395 VMOVL.U8 Q12,D30 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 396 397 VZIP.S8 D16,D17 398 VTBL.8 D28,{D10},D28 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 399 VADDW.S8 Q9,Q9,D16 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 400 401 VMAX.S16 Q9,Q9,Q2 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 402 VTBL.8 D29,{D10},D29 @II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 403 VMIN.U16 Q9,Q9,Q3 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 404 405 VMOVN.I16 D18,Q9 @vmovn_s16(pi2_tmp_cur_row.val[0]) 406 VAND Q14,Q14,Q4 @II edge_idx = vandq_s8(edge_idx, au1_mask) 407 408 SUB r5,r9,#2 @II wd - 2 409 VUZP.8 D28,D29 @II 410 SUB r14,r10,r4 @II (ht - row) 411 412 LSL r14,r14,#1 @II (ht - row) * 2 413 VTBL.8 D26,{D11},D28 @II offset = vtbl1_s8(offset_tbl_u, vget_low_s8(edge_idx)) 414 MUL r14,r14,r1 @II (ht - row) * 2 * src_strd 415 416 ADD r5,r14,r5 @II (ht - row) * 2 * src_strd + (wd - 2) 417 VTBL.8 D27,{D0},D29 @II 418 LDRH r14,[r6, r5] @II pu1_src_org[(ht - row) * 2* src_strd + (wd - 2)] 419 420 VZIP.S8 D26,D27 @II 421 VST1.8 {D18},[r12],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 422 423 STRH r14,[r2],#2 @II pu1_src_left[(ht - row) * 2] = au1_src_left_tmp[(ht - row) * 2] 424 VADDW.S8 Q12,Q12,D26 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 425 SUBS r4,r4,#1 @Decrement row by 1 426 427 VMAX.S16 Q12,Q12,Q2 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 428 VMIN.U16 Q12,Q12,Q3 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 429 430 VMOVN.I16 D28,Q12 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 431 432 VST1.8 {D28},[r12],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 433 434 BNE PU1_SRC_LOOP_RESIDUE @If not equal jump to the pu1_src loop 435 436END_LOOPS: 437 vpop {d8 - d15} 438 LDMFD sp!,{r4-r12,r15} @Reload the registers from SP 439 440 441 442 443 444