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 .equ pu1_src_top_left_offset, 104 62 .equ pu1_src_top_right_offset, 108 63 .equ pu1_src_bot_left_offset, 112 64 .equ pu1_avail_offset, 116 65 .equ pi1_sao_offset, 120 66 .equ wd_offset, 124 67 .equ ht_offset, 128 68 69 .text 70 .p2align 2 71 72 .extern gi1_table_edge_idx 73 .globl ihevc_sao_edge_offset_class1_a9q 74 75 gi1_table_edge_idx_addr: 76 .long gi1_table_edge_idx - ulbl1 - 8 77 78 ihevc_sao_edge_offset_class1_a9q: 79 80 81 STMFD sp!, {r4-r12, r14} @stack stores the values of the arguments 82 vpush {d8 - d15} 83 84 LDR r7,[sp,#wd_offset] @Loads wd 85 LDR r4,[sp,#pu1_src_top_left_offset] @Loads pu1_src_top_left 86 LDR r5,[sp,#pu1_avail_offset] @Loads pu1_avail 87 LDR r6,[sp,#pi1_sao_offset] @Loads pi1_sao_offset 88 LDR r8,[sp,#ht_offset] @Loads ht 89 90 SUB r9,r7,#1 @wd - 1 91 LDRB r10,[r3,r9] @pu1_src_top[wd - 1] 92 STRB r10,[r4] @*pu1_src_top_left = pu1_src_top[wd - 1] 93 ADD r10,r0,r9 @pu1_src[row * src_strd + wd - 1] 94 MOV r11,r2 @Move pu1_src_left pointer to r11 95 MOV r12,r8 @Move ht to r12 for loop count 96 SRC_LEFT_LOOP: 97 LDRB r14,[r10],r1 @Load pu1_src[row * src_strd + wd - 1] 98 STRB r14,[r11],#1 @pu1_src_left[row] 99 SUBS r12,#1 @Decrement the loop count 100 BNE SRC_LEFT_LOOP @If not equal to 0 jump to the src_left_loop 101 102 SUB r12,r8,#1 @ht - 1 103 MUL r12,r12,r1 @(ht - 1) * src_strd 104 ADD r12,r12,r0 @pu1_src[(ht - 1) * src_strd] 105 106 LDRB r4,[r5,#2] @pu1_avail[2] 107 CMP r4,#0 @0 == pu1_avail[2] 108 ADDEQ r0,r0,r1 @pu1_src += src_strd 109 SUBEQ r8,r8,#1 @ht-- 110 111 LDRB r4,[r5,#3] @pu1_avail[3] 112 CMP r4,#0 @0 == pu1_avail[3] 113 SUBEQ r8,r8,#1 @ht-- 114 115 VMOV.I8 Q0,#2 @const_2 = vdupq_n_s8(2) 116 VMOV.I16 Q1,#0 @const_min_clip = vdupq_n_s16(0) 117 VMOV.I16 Q2,#255 @const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) 118 LDR r14, gi1_table_edge_idx_addr @table pointer 119 ulbl1: 120 add r14,r14,pc 121 VLD1.8 D6,[r14] @edge_idx_tbl = vld1_s8(gi1_table_edge_idx) 122 VLD1.8 D7,[r6] @offset_tbl = vld1_s8(pi1_sao_offset) 123 124 CMP r7,#16 @Compare wd with 16 125 BLT WIDTH_RESIDUE @If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case 126 127 WIDTH_LOOP_16: 128 LDRB r4,[r5,#2] @pu1_avail[2] 129 CMP r4,#0 @0 == pu1_avail[2] 130 SUBEQ r9,r0,r1 @pu1_src -= src_strd 131 MOVNE r9,r3 @*pu1_src_top 132 133 MOV r10,r0 @*pu1_src 134 135 VLD1.8 D8,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 136 VLD1.8 D9,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 137 VLD1.8 D10,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 138 VLD1.8 D11,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 139 140 VLD1.8 D30,[r12]! @vld1q_u8(pu1_src[(ht - 1) * src_strd]) 141 VLD1.8 D31,[r12]! @vld1q_u8(pu1_src[(ht - 1) * src_strd]) 142 VCGT.U8 Q6,Q5,Q4 @vcgtq_u8(pu1_cur_row, pu1_top_row) 143 144 VST1.8 {Q15},[r3]! @vst1q_u8(pu1_src_top[col]) 145 VCLT.U8 Q7,Q5,Q4 @vcltq_u8(pu1_cur_row, pu1_top_row) 146 147 VSUB.U8 Q8,Q7,Q6 @sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 148 MOV r11,r8 @move ht to r11 for loop count 149 150 PU1_SRC_LOOP: 151 ADD r10,r10,r1 @*pu1_src + src_strd 152 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 153 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 154 SUB r10,#8 155 ADD r6,r10,r1 @II Iteration *pu1_src + src_strd 156 157 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_top_row) 158 VLD1.8 D30,[r6]! @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 159 VLD1.8 D31,[r6] @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 160 SUB r6,#8 161 162 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_top_row) 163 SUB r10,r10,r1 164 165 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 166 VMOVL.U8 Q13,D18 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 167 168 VADD.I8 Q6,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 169 VMOVL.U8 Q14,D19 @II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 170 171 VADD.I8 Q6,Q6,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 172 VCGT.U8 Q11,Q9,Q15 @II vcgtq_u8(pu1_cur_row, pu1_top_row) 173 174 VNEG.S8 Q8,Q10 @sign_up = vnegq_s8(sign_down) 175 VTBL.8 D12,{D6},D12 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 176 VCLT.U8 Q12,Q9,Q15 @II vcltq_u8(pu1_cur_row, pu1_top_row) 177 178 VSUB.U8 Q4,Q12,Q11 @II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 179 VTBL.8 D13,{D6},D13 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 180 VADD.I8 Q11,Q0,Q8 @II edge_idx = vaddq_s8(const_2, sign_up) 181 182 183 VNEG.S8 Q8,Q4 @II sign_up = vnegq_s8(sign_down) 184 VTBL.8 D12,{D7},D12 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 185 VADD.I8 Q11,Q11,Q4 @II edge_idx = vaddq_s8(edge_idx, sign_down) 186 187 188 VMOVL.U8 Q10,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 189 VTBL.8 D22,{D6},D22 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 190 VADDW.S8 Q10,Q10,D12 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 191 192 VMAX.S16 Q10,Q10,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 193 VTBL.8 D23,{D6},D23 @II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 194 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)) 195 196 197 VMOVL.U8 Q4,D11 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 198 VTBL.8 D13,{D7},D13 @offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 199 VMOV Q5,Q15 @II pu1_cur_row = pu1_next_row 200 201 VADDW.S8 Q4,Q4,D13 @pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 202 VTBL.8 D24,{D7},D22 @II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 203 VMAX.S16 Q4,Q4,Q1 @pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 204 205 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)) 206 VTBL.8 D25,{D7},D23 @II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 207 208 VMOVN.I16 D20,Q10 @vmovn_s16(pi2_tmp_cur_row.val[0]) 209 VADDW.S8 Q13,Q13,D24 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 210 211 VMOVN.I16 D21,Q4 @vmovn_s16(pi2_tmp_cur_row.val[1]) 212 VADDW.S8 Q14,Q14,D25 @II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 213 214 215 VMAX.S16 Q13,Q13,Q1 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 216 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)) 217 218 VMAX.S16 Q14,Q14,Q1 @II pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 219 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)) 220 VST1.8 {Q10},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 221 222 VMOVN.I16 D30,Q13 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 223 SUBS r11,r11,#2 @II Decrement the ht loop count by 1 224 VMOVN.I16 D31,Q14 @II vmovn_s16(pi2_tmp_cur_row.val[1]) 225 226 VST1.8 {Q15},[r10],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 227 228 BEQ PU1_SRC_LOOP_END @if 0 == pu1_avail[3] || 0 == pu1_avail[2] ht = ht-- 229 CMP r11,#1 @checking any residue remains 230 BGT PU1_SRC_LOOP @If not equal jump to PU1_SRC_LOOP 231 232 ADD r10,r10,r1 @*pu1_src + src_strd 233 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 234 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 235 SUB r10,#8 236 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_top_row) 237 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_top_row) 238 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 239 SUB r10,r10,r1 240 241 VADD.I8 Q11,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 242 VADD.I8 Q11,Q11,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 243 VTBL.8 D22,{D6},D22 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 244 VTBL.8 D23,{D6},D23 @vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 245 246 VTBL.8 D24,{D7},D22 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 247 VMOVL.U8 Q13,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 248 VADDW.S8 Q13,Q13,D24 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 249 VMAX.S16 Q13,Q13,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 250 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)) 251 252 VTBL.8 D25,{D7},D23 @offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 253 VMOVL.U8 Q14,D11 @pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 254 VADDW.S8 Q14,Q14,D25 @pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 255 VMAX.S16 Q14,Q14,Q1 @pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 256 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)) 257 258 VMOVN.I16 D30,Q13 @vmovn_s16(pi2_tmp_cur_row.val[0]) 259 VMOVN.I16 D31,Q14 @vmovn_s16(pi2_tmp_cur_row.val[1]) 260 261 VST1.8 {Q15},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 262 263 PU1_SRC_LOOP_END: 264 VMOV Q5,Q9 @pu1_cur_row = pu1_next_row 265 SUBS r7,r7,#16 @Decrement the wd loop count by 16 266 CMP r7,#8 @Check whether residue remains 267 BEQ WIDTH_RESIDUE @If residue remains jump to residue loop 268 BGT WIDTH_LOOP_16 @If not equal jump to width_loop 269 BLT END_LOOPS @Jump to end function 270 271 272 WIDTH_RESIDUE: 273 LDRB r4,[r5,#2] @pu1_avail[2] 274 CMP r4,#0 @0 == pu1_avail[2] 275 SUBEQ r9,r0,r1 @pu1_src -= src_strd 276 MOVNE r9,r3 @*pu1_src_top 277 MOV r10,r0 278 279 VLD1.8 D8,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 280 VLD1.8 D9,[r9]! @pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 281 VLD1.8 D10,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 282 VLD1.8 D11,[r0]! @pu1_cur_row = vld1q_u8(pu1_src) 283 284 VLD1.8 D30,[r12] @vld1_u8(pu1_src[(ht - 1) * src_strd]) 285 VST1.8 {D30},[r3] @vst1_u8(pu1_src_top[col]) 286 287 VCGT.U8 Q6,Q5,Q4 @vcgtq_u8(pu1_cur_row, pu1_top_row) 288 VCLT.U8 Q7,Q5,Q4 @vcltq_u8(pu1_cur_row, pu1_top_row) 289 VSUB.U8 Q8,Q7,Q6 @sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 290 MOV r11,r8 @move ht to r11 for loop count 291 292 PU1_SRC_LOOP_RESIDUE: 293 ADD r10,r10,r1 @*pu1_src + src_strd 294 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 295 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 296 SUB r10,#8 297 ADD r6,r10,r1 @II Iteration *pu1_src + src_strd 298 299 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_next_row) 300 VLD1.8 D30,[r6]! @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 301 VLD1.8 D31,[r6] @II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 302 SUB r6,#8 303 304 VCLT.U8 Q7,Q5,Q9 @vcltq_u8(pu1_cur_row, pu1_next_row) 305 SUB r10,r10,r1 306 307 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 308 VMOVL.U8 Q13,D18 @II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 309 310 VADD.I8 Q6,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 311 VCGT.U8 Q11,Q9,Q15 @II vcgtq_u8(pu1_cur_row, pu1_next_row) 312 313 VADD.I8 Q6,Q6,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 314 VCLT.U8 Q12,Q9,Q15 @II vcltq_u8(pu1_cur_row, pu1_next_row) 315 316 VNEG.S8 Q8,Q10 @sign_up = vnegq_s8(sign_down) 317 VTBL.8 D12,{D6},D12 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 318 VSUB.U8 Q10,Q12,Q11 @II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 319 320 VADD.I8 Q11,Q0,Q8 @II edge_idx = vaddq_s8(const_2, sign_up) 321 VTBL.8 D12,{D7},D12 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 322 VNEG.S8 Q8,Q10 @II sign_up = vnegq_s8(sign_down) 323 324 VADD.I8 Q11,Q11,Q10 @II edge_idx = vaddq_s8(edge_idx, sign_down) 325 VMOVL.U8 Q10,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 326 327 VADDW.S8 Q10,Q10,D12 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 328 VTBL.8 D22,{D6},D22 @II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 329 VMAX.S16 Q10,Q10,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 330 331 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)) 332 VTBL.8 D24,{D7},D22 @II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 333 VMOVN.I16 D20,Q10 @vmovn_s16(pi2_tmp_cur_row.val[0]) 334 335 VADDW.S8 Q13,Q13,D24 @II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 336 VMAX.S16 Q13,Q13,Q1 @II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 337 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)) 338 339 VMOV Q5,Q15 @II pu1_cur_row = pu1_next_row 340 VST1.8 {D20},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 341 VMOVN.I16 D30,Q13 @II vmovn_s16(pi2_tmp_cur_row.val[0]) 342 343 SUBS r11,r11,#2 @Decrement the ht loop count by 1 344 VST1.8 {D30},[r10],r1 @II vst1q_u8(pu1_src_cpy, pu1_cur_row) 345 346 BEQ END_LOOPS 347 CMP r11,#1 348 BGT PU1_SRC_LOOP_RESIDUE @If not equal jump to PU1_SRC_LOOP 349 350 351 ADD r10,r10,r1 @*pu1_src + src_strd 352 VLD1.8 D18,[r10]! @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 353 VLD1.8 D19,[r10] @pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 354 SUB r10,#8 355 VCGT.U8 Q6,Q5,Q9 @vcgtq_u8(pu1_cur_row, pu1_next_row) 356 VCGT.U8 Q7,Q9,Q5 @vcltq_u8(pu1_cur_row, pu1_next_row) 357 VSUB.U8 Q10,Q7,Q6 @sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 358 SUB r10,r10,r1 359 360 VADD.I8 Q11,Q0,Q8 @edge_idx = vaddq_s8(const_2, sign_up) 361 VADD.I8 Q11,Q11,Q10 @edge_idx = vaddq_s8(edge_idx, sign_down) 362 VTBL.8 D22,{D6},D22 @vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 363 364 VTBL.8 D24,{D7},D22 @offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 365 VMOVL.U8 Q13,D10 @pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 366 VADDW.S8 Q13,Q13,D24 @pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 367 VMAX.S16 Q13,Q13,Q1 @pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 368 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)) 369 370 VMOVN.I16 D30,Q13 @vmovn_s16(pi2_tmp_cur_row.val[0]) 371 372 VST1.8 {D30},[r10],r1 @vst1q_u8(pu1_src_cpy, pu1_cur_row) 373 374 END_LOOPS: 375 vpop {d8 - d15} 376 LDMFD sp!,{r4-r12,r15} @Reload the registers from SP 377 378 379 380 381 382 383
