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_class1.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_class1(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, 48@ WORD32 wd, 49@ WORD32 ht) 50@**************Variables Vs Registers***************************************** 51@r0 => *pu1_src 52@r1 => src_strd 53@r2 => *pu1_src_left 54@r3 => *pu1_src_top 55@r4 => *pu1_src_top_left 56@r5 => *pu1_avail 57@r6 => *pi1_sao_offset 58@r7 => wd 59@r8 => ht 60 61.text 62.p2align 2 63 64.extern gi1_table_edge_idx 65.globl ihevc_sao_edge_offset_class1_a9q 66 67gi1_table_edge_idx_addr: 68.long gi1_table_edge_idx - ulbl1 - 8 69 70ihevc_sao_edge_offset_class1_a9q: 71 72 73 STMFD sp!, {r4-r12, r14} @stack stores the values of the arguments 74 LDR r7,[sp,#60] @Loads wd 75 LDR r4,[sp,#40] @Loads pu1_src_top_left 76 LDR r5,[sp,#52] @Loads pu1_avail 77 LDR r6,[sp,#56] @Loads pi1_sao_offset 78 LDR r8,[sp,#64] @Loads ht 79 80 SUB r9,r7,#1 @wd - 1 81 LDRB r10,[r3,r9] @pu1_src_top[wd - 1] 82 STRB r10,[r4] @*pu1_src_top_left = pu1_src_top[wd - 1] 83 ADD r10,r0,r9 @pu1_src[row * src_strd + wd - 1] 84 MOV r11,r2 @Move pu1_src_left pointer to r11 85 MOV r12,r8 @Move ht to r12 for loop count 86SRC_LEFT_LOOP: 87 LDRB r14,[r10],r1 @Load pu1_src[row * src_strd + wd - 1] 88 STRB r14,[r11],#1 @pu1_src_left[row] 89 SUBS r12,#1 @Decrement the loop count 90 BNE SRC_LEFT_LOOP @If not equal to 0 jump to the src_left_loop 91 92 SUB r12,r8,#1 @ht - 1 93 MUL r12,r12,r1 @(ht - 1) * src_strd 94 ADD r12,r12,r0 @pu1_src[(ht - 1) * src_strd] 95 96 LDRB r4,[r5,#2] @pu1_avail[2] 97 CMP r4,#0 @0 == pu1_avail[2] 98 ADDEQ r0,r0,r1 @pu1_src += src_strd 99 SUBEQ r8,r8,#1 @ht-- 100 101 LDRB r4,[r5,#3] @pu1_avail[3] 102 CMP r4,#0 @0 == pu1_avail[3] 103 SUBEQ r8,r8,#1 @ht-- 104 105 VMOV.I8 Q0,#2 @const_2 = vdupq_n_s8(2) 106 VMOV.I16 Q1,#0 @const_min_clip = vdupq_n_s16(0) 107 VMOV.I16 Q2,#255 @const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) 108 LDR r14, gi1_table_edge_idx_addr @table pointer 109ulbl1: 110 add r14,r14,pc 111 VLD1.8 D6,[r14] @edge_idx_tbl = vld1_s8(gi1_table_edge_idx) 112 VLD1.8 D7,[r6] @offset_tbl = vld1_s8(pi1_sao_offset) 113 114 CMP r7,#16 @Compare wd with 16 115 BLT WIDTH_RESIDUE @If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case 116 117WIDTH_LOOP_16: 118 LDRB r4,[r5,#2] @pu1_avail[2] 119 CMP r4,#0 @0 == pu1_avail[2] 120 SUBEQ r9,r0,r1 @pu1_src -= src_strd 121 MOVNE r9,r3 @*pu1_src_top 122 123 MOV r10,r0 @*pu1_src 124 125 VLD1.8 D8,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 126 VLD1.8 D9,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 127 VLD1.8 D10,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 128 VLD1.8 D11,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 129 130 VLD1.8 D30,[r12]! @vld1q_u8(pu1_src[(ht - 1) * src_strd]) 131 VLD1.8 D31,[r12]! @vld1q_u8(pu1_src[(ht - 1) * src_strd]) 132 VCGT.U8 Q6,Q5,Q4 @vcgtq_u8(pu1_cur_row, pu1_top_row) 133 134 VST1.8 {Q15},[r3]! @vst1q_u8(pu1_src_top[col]) 135 VCLT.U8 Q7,Q5,Q4 @vcltq_u8(pu1_cur_row, pu1_top_row) 136 137 VSUB.U8 Q8,Q7,Q6 @sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 138 MOV r11,r8 @move ht to r11 for loop count 139 140PU1_SRC_LOOP: 141 ADD r10,r10,r1 @*pu1_src + src_strd 142 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 143 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 144 SUB r10,#8 145 ADD r6,r10,r1 @II Iteration *pu1_src + src_strd 146 147 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_top_row) 148 VLD1.8 D30,[r6]! @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 149 VLD1.8 D31,[r6] @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 150 SUB r6,#8 151 152 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_top_row) 153 SUB r10,r10,r1 154 155 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 156 VMOVL.U8 Q13,D18 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 157 158 VADD.I8 Q6,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 159 VMOVL.U8 Q14,D19 @II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 160 161 VADD.I8 Q6,Q6,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 162 VCGT.U8 Q11,Q9,Q15 @II vcgtq_u8(pu1_cur_row, pu1_top_row) 163 164 VNEG.S8 Q8,Q10 @sign_up = vnegq_s8(sign_down) 165 VTBL.8 D12,{D6},D12 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 166 VCLT.U8 Q12,Q9,Q15 @II vcltq_u8(pu1_cur_row, pu1_top_row) 167 168 VSUB.U8 Q4,Q12,Q11 @II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 169 VTBL.8 D13,{D6},D13 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 170 VADD.I8 Q11,Q0,Q8 @II edge_idx = vaddq_s8(const_2, sign_up) 171 172 173 VNEG.S8 Q8,Q4 @II sign_up = vnegq_s8(sign_down) 174 VTBL.8 D12,{D7},D12 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 175 VADD.I8 Q11,Q11,Q4 @II edge_idx = vaddq_s8(edge_idx, sign_down) 176 177 178 VMOVL.U8 Q10,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 179 VTBL.8 D22,{D6},D22 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 180 VADDW.S8 Q10,Q10,D12 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 181 182 VMAX.S16 Q10,Q10,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 183 VTBL.8 D23,{D6},D23 @II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 184 VMIN.U16 Q10,Q10,Q2 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 185 186 187 VMOVL.U8 Q4,D11 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 188 VTBL.8 D13,{D7},D13 @offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 189 VMOV Q5,Q15 @II pu1_cur_row = pu1_next_row 190 191 VADDW.S8 Q4,Q4,D13 @pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 192 VTBL.8 D24,{D7},D22 @II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 193 VMAX.S16 Q4,Q4,Q1 @pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 194 195 VMIN.U16 Q4,Q4,Q2 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 196 VTBL.8 D25,{D7},D23 @II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 197 198 VMOVN.I16 D20,Q10 @vmovn_s16(pi2_tmp_cur_row.val[0]) 199 VADDW.S8 Q13,Q13,D24 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 200 201 VMOVN.I16 D21,Q4 @vmovn_s16(pi2_tmp_cur_row.val[1]) 202 VADDW.S8 Q14,Q14,D25 @II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 203 204 205 VMAX.S16 Q13,Q13,Q1 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 206 VMIN.U16 Q13,Q13,Q2 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 207 208 VMAX.S16 Q14,Q14,Q1 @II pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 209 VMIN.U16 Q14,Q14,Q2 @II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 210 VST1.8 {Q10},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 211 212 VMOVN.I16 D30,Q13 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 213 SUBS r11,r11,#2 @II Decrement the ht loop count by 1 214 VMOVN.I16 D31,Q14 @II vmovn_s16(pi2_tmp_cur_row.val[1]) 215 216 VST1.8 {Q15},[r10],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 217 218 BEQ PU1_SRC_LOOP_END @if 0 == pu1_avail[3] || 0 == pu1_avail[2] ht = ht-- 219 CMP r11,#1 @checking any residue remains 220 BGT PU1_SRC_LOOP @If not equal jump to PU1_SRC_LOOP 221 222 ADD r10,r10,r1 @*pu1_src + src_strd 223 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 224 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 225 SUB r10,#8 226 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_top_row) 227 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_top_row) 228 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 229 SUB r10,r10,r1 230 231 VADD.I8 Q11,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 232 VADD.I8 Q11,Q11,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 233 VTBL.8 D22,{D6},D22 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 234 VTBL.8 D23,{D6},D23 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 235 236 VTBL.8 D24,{D7},D22 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 237 VMOVL.U8 Q13,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 238 VADDW.S8 Q13,Q13,D24 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 239 VMAX.S16 Q13,Q13,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 240 VMIN.U16 Q13,Q13,Q2 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 241 242 VTBL.8 D25,{D7},D23 @offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 243 VMOVL.U8 Q14,D11 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 244 VADDW.S8 Q14,Q14,D25 @pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 245 VMAX.S16 Q14,Q14,Q1 @pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 246 VMIN.U16 Q14,Q14,Q2 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 247 248 VMOVN.I16 D30,Q13 @vmovn_s16(pi2_tmp_cur_row.val[0]) 249 VMOVN.I16 D31,Q14 @vmovn_s16(pi2_tmp_cur_row.val[1]) 250 251 VST1.8 {Q15},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 252 253PU1_SRC_LOOP_END: 254 VMOV Q5,Q9 @pu1_cur_row = pu1_next_row 255 SUBS r7,r7,#16 @Decrement the wd loop count by 16 256 CMP r7,#8 @Check whether residue remains 257 BEQ WIDTH_RESIDUE @If residue remains jump to residue loop 258 BGT WIDTH_LOOP_16 @If not equal jump to width_loop 259 BLT END_LOOPS @Jump to end function 260 261 262WIDTH_RESIDUE: 263 LDRB r4,[r5,#2] @pu1_avail[2] 264 CMP r4,#0 @0 == pu1_avail[2] 265 SUBEQ r9,r0,r1 @pu1_src -= src_strd 266 MOVNE r9,r3 @*pu1_src_top 267 MOV r10,r0 268 269 VLD1.8 D8,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 270 VLD1.8 D9,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 271 VLD1.8 D10,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 272 VLD1.8 D11,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 273 274 VLD1.8 D30,[r12] @vld1_u8(pu1_src[(ht - 1) * src_strd]) 275 VST1.8 {D30},[r3] @vst1_u8(pu1_src_top[col]) 276 277 VCGT.U8 Q6,Q5,Q4 @vcgtq_u8(pu1_cur_row, pu1_top_row) 278 VCLT.U8 Q7,Q5,Q4 @vcltq_u8(pu1_cur_row, pu1_top_row) 279 VSUB.U8 Q8,Q7,Q6 @sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 280 MOV r11,r8 @move ht to r11 for loop count 281 282PU1_SRC_LOOP_RESIDUE: 283 ADD r10,r10,r1 @*pu1_src + src_strd 284 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 285 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 286 SUB r10,#8 287 ADD r6,r10,r1 @II Iteration *pu1_src + src_strd 288 289 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_next_row) 290 VLD1.8 D30,[r6]! @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 291 VLD1.8 D31,[r6] @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 292 SUB r6,#8 293 294 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_next_row) 295 SUB r10,r10,r1 296 297 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 298 VMOVL.U8 Q13,D18 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 299 300 VADD.I8 Q6,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 301 VCGT.U8 Q11,Q9,Q15 @II vcgtq_u8(pu1_cur_row, pu1_next_row) 302 303 VADD.I8 Q6,Q6,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 304 VCLT.U8 Q12,Q9,Q15 @II vcltq_u8(pu1_cur_row, pu1_next_row) 305 306 VNEG.S8 Q8,Q10 @sign_up = vnegq_s8(sign_down) 307 VTBL.8 D12,{D6},D12 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 308 VSUB.U8 Q10,Q12,Q11 @II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 309 310 VADD.I8 Q11,Q0,Q8 @II edge_idx = vaddq_s8(const_2, sign_up) 311 VTBL.8 D12,{D7},D12 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 312 VNEG.S8 Q8,Q10 @II sign_up = vnegq_s8(sign_down) 313 314 VADD.I8 Q11,Q11,Q10 @II edge_idx = vaddq_s8(edge_idx, sign_down) 315 VMOVL.U8 Q10,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 316 317 VADDW.S8 Q10,Q10,D12 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 318 VTBL.8 D22,{D6},D22 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 319 VMAX.S16 Q10,Q10,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 320 321 VMIN.U16 Q10,Q10,Q2 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 322 VTBL.8 D24,{D7},D22 @II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 323 VMOVN.I16 D20,Q10 @vmovn_s16(pi2_tmp_cur_row.val[0]) 324 325 VADDW.S8 Q13,Q13,D24 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 326 VMAX.S16 Q13,Q13,Q1 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 327 VMIN.U16 Q13,Q13,Q2 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 328 329 VMOV Q5,Q15 @II pu1_cur_row = pu1_next_row 330 VST1.8 {D20},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 331 VMOVN.I16 D30,Q13 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 332 333 SUBS r11,r11,#2 @Decrement the ht loop count by 1 334 VST1.8 {D30},[r10],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 335 336 BEQ END_LOOPS 337 CMP r11,#1 338 BGT PU1_SRC_LOOP_RESIDUE @If not equal jump to PU1_SRC_LOOP 339 340 341 ADD r10,r10,r1 @*pu1_src + src_strd 342 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 343 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 344 SUB r10,#8 345 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_next_row) 346 VCGT.U8 Q7,Q9,Q5 @vcltq_u8(pu1_cur_row, pu1_next_row) 347 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 348 SUB r10,r10,r1 349 350 VADD.I8 Q11,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 351 VADD.I8 Q11,Q11,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 352 VTBL.8 D22,{D6},D22 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 353 354 VTBL.8 D24,{D7},D22 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 355 VMOVL.U8 Q13,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 356 VADDW.S8 Q13,Q13,D24 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 357 VMAX.S16 Q13,Q13,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 358 VMIN.U16 Q13,Q13,Q2 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 359 360 VMOVN.I16 D30,Q13 @vmovn_s16(pi2_tmp_cur_row.val[0]) 361 362 VST1.8 {D30},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 363 364END_LOOPS: 365 LDMFD sp!,{r4-r12,r15} @Reload the registers from SP 366 367 368 369 370 371 372