| ///***************************************************************************** |
| //* |
| //* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore |
| //* |
| //* Licensed under the Apache License, Version 2.0 (the "License"); |
| //* you may not use this file except in compliance with the License. |
| //* You may obtain a copy of the License at: |
| //* |
| //* http://www.apache.org/licenses/LICENSE-2.0 |
| //* |
| //* Unless required by applicable law or agreed to in writing, software |
| //* distributed under the License is distributed on an "AS IS" BASIS, |
| //* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| //* See the License for the specific language governing permissions and |
| //* limitations under the License. |
| //* |
| //*****************************************************************************/ |
| ///** |
| //******************************************************************************* |
| //* ,:file |
| //* ihevc_sao_edge_offset_class2.s |
| //* |
| //* ,:brief |
| //* Contains function definitions for inter prediction interpolation. |
| //* Functions are coded using NEON intrinsics and can be compiled using@ ARM |
| //* RVCT |
| //* |
| //* ,:author |
| //* Parthiban V |
| //* |
| //* ,:par List of Functions: |
| //* |
| //* |
| //* ,:remarks |
| //* None |
| //* |
| //******************************************************************************* |
| //*/ |
| //void ihevc_sao_edge_offset_class2(UWORD8 *pu1_src, |
| // WORD32 src_strd, |
| // UWORD8 *pu1_src_left, |
| // UWORD8 *pu1_src_top, |
| // UWORD8 *pu1_src_top_left, |
| // UWORD8 *pu1_src_top_right, |
| // UWORD8 *pu1_src_bot_left, |
| // UWORD8 *pu1_avail, |
| // WORD8 *pi1_sao_offset, |
| // WORD32 wd, |
| // WORD32 ht) |
| //**************Variables Vs Registers***************************************** |
| //x0 => *pu1_src |
| //x1 => src_strd |
| //x2 => *pu1_src_left |
| //x3 => *pu1_src_top |
| //x4 => *pu1_src_top_left |
| //x5 => *pu1_avail |
| //x6 => *pi1_sao_offset |
| //x7 => wd |
| //x8=> ht |
| |
| .text |
| .p2align 2 |
| |
| .include "ihevc_neon_macros.s" |
| |
| .globl gi1_table_edge_idx |
| .globl ihevc_sao_edge_offset_class2_av8 |
| |
| ihevc_sao_edge_offset_class2_av8: |
| |
| |
| // STMFD sp!,{x4-x12,x14} //stack stores the values of the arguments |
| MOV x5,x7 //Loads pu1_avail |
| |
| LDR x6,[sp] //Loads pi1_sao_offset |
| LDR w7,[sp,#8] //Loads wd |
| LDR w8,[sp,#16] //Loads ht |
| |
| MOV x16,x7 // wd |
| MOV x17,x8 // ht |
| |
| |
| stp x19, x20,[sp,#-16]! |
| stp x21, x22,[sp,#-16]! |
| stp x23, x24,[sp,#-16]! |
| |
| SUB x9,x7,#1 //wd - 1 |
| |
| LDRB w10,[x3,x9] //pu1_src_top[wd - 1] |
| |
| MOV x19,x0 //Store pu1_src in sp |
| MOV x21,x2 //Store pu1_src_left in sp |
| MOV x22,x3 //Store pu1_src_top in sp |
| MOV x23,x5 //Store pu1_avail in sp |
| MOV x24,x4 //Store pu1_src_top_left in sp |
| |
| |
| MOV x9,x7 //Move width to x9 for loop count |
| |
| SUB sp,sp,#0xA0 //Decrement the stack pointer to store some temp arr values |
| |
| STRB w10,[sp] //u1_src_top_left_tmp = pu1_src_top[wd - 1] |
| SUB x10,x8,#1 //ht-1 |
| madd x11, x10, x1, x0 //pu1_src[(ht - 1) * src_strd + col] |
| ADD x12,sp,#0x02 //temp array |
| |
| AU1_SRC_TOP_LOOP: |
| LD1 {v0.8b},[x11],#8 //pu1_src[(ht - 1) * src_strd + col] |
| SUBS x9,x9,#8 //Decrement the loop count by 8 |
| ST1 {v0.8b},[x12],#8 //au1_src_top_tmp[col] = pu1_src[(ht - 1) * src_strd + col] |
| BNE AU1_SRC_TOP_LOOP |
| |
| PU1_AVAIL_4_LOOP: |
| LDRB w10,[x5,#4] //pu1_avail[4] |
| CMP x10,#0 |
| LDRB w9,[x0] //u1_pos_0_0_tmp = pu1_src[0] |
| BEQ PU1_AVAIL_7_LOOP |
| |
| LDRB w11,[x4] //pu1_src_top_left[0] |
| ADD x14,x0,x1 //pu1_src + src_strd |
| |
| SUBS x12,x9,x11 //pu1_src[0] - pu1_src_top_left[0] |
| LDRB w4,[x14,#1] //pu1_src[1 + src_strd] |
| |
| movn x20,#0 |
| csel x12, x20, x12,LT |
| MOV x20,#1 |
| csel x12, x20, x12,GT //SIGN(pu1_src[0] - pu1_src_top_left[0]) |
| |
| ADRP x14, :got:gi1_table_edge_idx //table pointer |
| LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] |
| SUBS x11,x9,x4 //pu1_src[0] - pu1_src[1 + src_strd] |
| |
| movn x20,#0 |
| csel x11, x20, x11,LT |
| MOV x20,#1 |
| csel x11, x20, x11,GT //SIGN(pu1_src[0] - pu1_src[1 + src_strd]) |
| ADD x4,x12,x11 //SIGN(pu1_src[0] - pu1_src_top_left[0]) + SIGN(pu1_src[0] - pu1_src[1 + src_strd]) |
| ADD x4,x4,#2 //edge_idx |
| |
| LDRSB x12,[x14,x4] //edge_idx = gi1_table_edge_idx[edge_idx] |
| CMP x12,#0 //0 != edge_idx |
| BEQ PU1_AVAIL_7_LOOP |
| LDRSB x10,[x6,x12] //pi1_sao_offset[edge_idx] |
| ADD x9,x9,x10 //pu1_src[0] + pi1_sao_offset[edge_idx] |
| mov x20,#255 |
| cmp x9,x20 |
| csel x9, x20, x9, ge //u1_pos_0_0_tmp = CLIP3(pu1_src[0] + pi1_sao_offset[edge_idx], 0, (1 << bit_depth) - 1) |
| |
| PU1_AVAIL_7_LOOP: |
| LDRB w14,[x5,#7] //pu1_avail[7] |
| CMP x14,#0 |
| SUB x10,x7,#1 //wd - 1 |
| SUB x11,x8,#1 //ht - 1 |
| madd x12, x11, x1, x10 //wd - 1 + (ht - 1) * src_strd |
| ADD x12,x12,x0 //pu1_src[wd - 1 + (ht - 1) * src_strd] |
| LDRB w10,[x12] //u1_pos_wd_ht_tmp = pu1_src[wd - 1 + (ht - 1) * src_strd] |
| BEQ PU1_AVAIL |
| |
| SUB x4,x12,x1 //pu1_src[(wd - 1 + (ht - 1) * src_strd) - src_strd] |
| SUB x4,x4,#1 |
| LDRB w11,[x4] //Load pu1_src[wd - 1 + (ht - 1) * src_strd - 1 - src_strd] |
| ADD x4,x4,#1 |
| ADD x14,x12,x1 //pu1_src[(wd - 1 + (ht - 1) * src_strd) + src_strd] |
| |
| SUBS x11,x10,x11 //pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd- 1 - src_strd] |
| LDRB w4,[x14,#1] //Load pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd] |
| |
| movn x20,#0 |
| csel x11, x20, x11,LT |
| MOV x20,#1 |
| csel x11, x20, x11,GT //SIGN(pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd- 1 - src_strd]) |
| |
| SUBS x4,x10,x4 //pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd] |
| movn x20,#0 |
| csel x4, x20, x4,LT |
| MOV x20,#1 |
| csel x4, x20, x4,GT //SIGN(pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd]) |
| |
| ADD x11,x11,x4 //Add 2 sign value |
| ADD x11,x11,#2 //edge_idx |
| ADRP x14, :got:gi1_table_edge_idx //table pointer |
| LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] |
| |
| LDRSB x12,[x14,x11] //edge_idx = gi1_table_edge_idx[edge_idx] |
| CMP x12,#0 |
| BEQ PU1_AVAIL |
| LDRSB x11,[x6,x12] //pi1_sao_offset[edge_idx] |
| ADD x10,x10,x11 //pu1_src[wd - 1 + (ht - 1) * src_strd] + pi1_sao_offset[edge_idx] |
| mov x20,#255 |
| cmp x10,x20 |
| csel x10, x20, x10, ge //u1_pos_wd_ht_tmp = CLIP3(pu1_src[wd - 1 + (ht - 1) * src_strd] + pi1_sao_offset[edge_idx], 0, (1 << bit_depth) - 1) |
| |
| PU1_AVAIL: |
| MOV x12,x8 //Move ht |
| movi v0.16b, #2 //const_2 = vdupq_n_s8(2) |
| LDRB w11,[x5,#3] //pu1_avail[3] |
| |
| MOV x14,x2 //Move pu1_src_left to pu1_src_left_cpy |
| movi v2.8h, #0 //const_min_clip = vdupq_n_s16(0) |
| CMP x11,#0 |
| |
| LDRB w5,[x5,#2] //pu1_avail[2] |
| movi v4.8h, #255 //const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) |
| SUB x20,x12,#1 //ht_tmp-- |
| csel x12, x20, x12,EQ |
| |
| CMP x5,#0 |
| LD1 {v7.8b},[x6] //offset_tbl = vld1_s8(pi1_sao_offset) |
| ADRP x11, :got:gi1_table_edge_idx //table pointer |
| LDR x11, [x11, #:got_lo12:gi1_table_edge_idx] |
| |
| |
| ADD x20,x0,x1 //pu1_src += src_strd |
| csel x0, x20, x0,EQ |
| LD1 {v6.8b},[x11] //edge_idx_tbl = vld1_s8(gi1_table_edge_idx) |
| SUB x20,x12,#1 //ht_tmp-- |
| csel x12, x20, x12,EQ |
| |
| MOV x6,x7 //move wd to x6 loop_count |
| movi v1.16b, #0xFF //au1_mask = vdupq_n_s8(-1) |
| ADD x20,x14,#1 //pu1_src_left_cpy += 1 |
| csel x14, x20, x14,EQ |
| |
| MOV x15,x0 |
| CMP x7,#16 //Compare wd with 16 |
| |
| BLT WIDTH_RESIDUE //If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case |
| CMP x8,#4 //Compare ht with 4 |
| BLE WD_16_HT_4_LOOP //If jump to WD_16_HT_4_LOOP |
| |
| WIDTH_LOOP_16: |
| MOV x7,x16 //Loads wd |
| |
| MOV x5,x23 //Loads pu1_avail |
| CMP x6,x7 //col == wd |
| LDRb w20, [x5] //pu1_avail[0] |
| csel w8,w20,w8,EQ |
| MOV x20,#-1 |
| csel x8, x20, x8,NE //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) |
| |
| mov v1.b[0], w8 //au1_mask = vsetq_lane_s8((-1||pu1_avail[0]), au1_mask, 0) |
| CMP x6,#16 //if(col == 16) |
| BNE SKIP_AU1_MASK_VAL |
| LDRB w8,[x5,#1] //pu1_avail[1] |
| mov v1.b[15], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) |
| |
| SKIP_AU1_MASK_VAL: |
| LDRB w11,[x5,#2] //pu1_avail[2] |
| CMP x11,#0 |
| |
| SUB x20,x0,x1 //pu1_src - src_strd |
| csel x8, x20, x8,EQ |
| csel x8, x3, x8,NE //pu1_src_top_cpy |
| SUB x8,x8,#1 //pu1_src_top_cpy - 1 || pu1_src - src_strd - 1 |
| |
| MOV x7,x16 //Loads wd |
| LD1 {v3.16b},[x8] //pu1_top_row = vld1q_u8(pu1_src - src_strd - 1) || vld1q_u8(pu1_src_top_cpy - 1) |
| ADD x3,x3,#16 |
| |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) |
| MOV x4,x17 //Loads ht |
| |
| SUB x7,x7,x6 //(wd - col) |
| cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| MOV x8,x19 //Loads *pu1_src |
| |
| ADD x7,x7,#15 //15 + (wd - col) |
| cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| ADD x7,x8,x7 //pu1_src[0 * src_strd + 15 + (wd - col)] |
| |
| SUB x5,x5,#1 |
| SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| AU1_SRC_LEFT_LOOP: |
| LDRB w8,[x7] //load the value and increment by src_strd |
| ADD x7,x7,x1 |
| STRB w8,[x5,#1]! //store it in the stack pointer |
| SUBS x4,x4,#1 //decrement the loop count |
| BNE AU1_SRC_LEFT_LOOP |
| |
| ADD x8,x0,x1 //I Iteration *pu1_src + src_strd |
| movi v18.16b, #0 |
| MOV x4,x23 //I Loads pu1_avail |
| |
| MOV x7,x12 //row count, move ht_tmp to x7 |
| LD1 {v16.16b},[x8] //I pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| LDRB w4,[x4,#2] //I pu1_avail[2] |
| |
| LDRB w5,[x8,#16] //I pu1_src_cpy[src_strd + 16] |
| mov v18.b[0], w5 //I pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| |
| EXT v18.16b, v16.16b , v18.16b,#1 //I pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| CMP x4,#0 //I |
| BNE SIGN_UP_CHANGE_DONE //I |
| |
| SIGN_UP_CHANGE: |
| SUB x2,x12,x7 //I ht_tmp - row |
| LDRB w11,[x0] //I pu1_src_cpy[0] |
| ADD x2,x14,x2 //I pu1_src_left_cpy[ht_tmp - row] |
| SUB x2,x2,#1 |
| LDRB w5,[x2] //I load the value |
| ADD x2,x2,#1 |
| SUBS x4,x11,x5 //I pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| movn x20,#0 |
| csel x4, x20, x4,LT //I |
| MOV x20,#1 |
| csel x4, x20, x4,GT //I SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| mov v17.b[0], w4 //I sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| |
| SIGN_UP_CHANGE_DONE: |
| cmhi v3.16b, v5.16b , v18.16b //I vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| ADD v24.16b, v0.16b , v17.16b //I edge_idx = vaddq_s8(const_2, sign_up) |
| |
| cmhi v18.16b, v18.16b , v5.16b //I vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| SUB v3.16b, v18.16b , v3.16b //I sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| ADD v24.16b, v24.16b , v3.16b //I edge_idx = vaddq_s8(edge_idx, sign_down) |
| TBL v18.16b, {v6.16b},v24.16b //I vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| // TBL v19.8b, {v6.16b},v25.8b //I vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| |
| AND v18.16b, v18.16b , v1.16b //I edge_idx = vandq_s8(edge_idx, au1_mask) |
| |
| NEG v17.16b, v3.16b //I sign_up = vnegq_s8(sign_down) |
| TBL v3.16b, {v7.16b},v18.16b //I offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| EXT v17.16b, v17.16b , v17.16b,#15 //I sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| Uxtl v20.8h, v5.8b //I pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| // TBL v11.8b, {v7.16b},v19.8b //I offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| SADDW v20.8h, v20.8h , v3.8b //I pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| |
| SMAX v20.8h, v20.8h , v2.8h //I pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| Uxtl2 v22.8h, v5.16b //I pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| |
| UMIN v20.8h, v20.8h , v4.8h //I pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| mov v5.16b, v16.16b //I pu1_cur_row = pu1_next_row |
| |
| SADDW2 v22.8h, v22.8h , v3.16b //I pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| xtn v20.8b, v20.8h //I vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| SMAX v22.8h, v22.8h , v2.8h //I pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| SUB x7,x7,#1 //I Decrement the ht_tmp loop count by 1 |
| |
| UMIN v22.8h, v22.8h , v4.8h //I pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) |
| |
| xtn2 v20.16b, v22.8h //I vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| PU1_SRC_LOOP: |
| |
| ST1 { v20.16b},[x0],x1 //I vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| ADD x8,x0,x1 //II iteration *pu1_src + src_strd |
| |
| LD1 {v16.16b},[x8] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| ADD x11,x8,x1 //III iteration *pu1_src + src_strd |
| |
| LDRB w5,[x8,#16] //II pu1_src_cpy[src_strd + 16] |
| LD1 {v30.16b},[x11] //III pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| LDRB w4,[x0] //II pu1_src_cpy[0] |
| |
| LDRB w8,[x11,#16] //III pu1_src_cpy[src_strd + 16] |
| mov v28.b[0], w5 //II pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| |
| SUB x5,x12,x7 //II ht_tmp - row |
| EXT v22.16b, v16.16b , v28.16b,#1 //II pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| ADD x5,x14,x5 //II pu1_src_left_cpy[ht_tmp - row] |
| |
| SUB x5,x5,#1 |
| LDRB w5,[x5] //II load the value |
| mov v18.b[0], w8 //III pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| SUB x7,x7,#1 //II Decrement the ht_tmp loop count by 1 |
| |
| SUBS x4,x4,x5 //II pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| EXT v18.16b, v30.16b , v18.16b,#1 //III pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| LDRB w2,[x0,x1] //III pu1_src_cpy[0] |
| |
| cmhi v24.16b, v5.16b , v22.16b //II vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| SUB x5,x12,x7 //III ht_tmp - row |
| |
| movn x20,#0 |
| csel x4, x20, x4,LT //II |
| cmhi v22.16b, v22.16b , v5.16b //II vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| ADD x5,x14,x5 //III pu1_src_left_cpy[ht_tmp - row] |
| |
| MOV x20,#1 |
| csel x4, x20, x4,GT //II SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| SUB v24.16b, v22.16b , v24.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| SUB x5,x5,#1 |
| LDRB w5,[x5] //III load the value |
| |
| SUBS x2,x2,x5 //III pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| mov v17.b[0], w4 //II sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| |
| movn x20,#0 |
| csel x2, x20, x2,LT //III |
| cmhi v3.16b, v16.16b , v18.16b //III vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| MOV x20,#1 |
| csel x2, x20, x2,GT //III SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| |
| ADD v22.16b, v0.16b , v17.16b //II edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v22.16b, v22.16b , v24.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) |
| |
| cmhi v18.16b, v18.16b , v16.16b //III vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| TBL v22.16b, {v6.16b},v22.16b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| NEG v17.16b, v24.16b //II sign_up = vnegq_s8(sign_down) |
| |
| SUB v3.16b, v18.16b , v3.16b //III sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| // TBL v23.8b, {v6.16b},v23.8b //II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| EXT v17.16b, v17.16b , v17.16b,#15 //II sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| AND v22.16b, v22.16b , v1.16b //II edge_idx = vandq_s8(edge_idx, au1_mask) |
| mov v17.b[0], w2 //III sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| |
| ADD v18.16b, v0.16b , v17.16b //III edge_idx = vaddq_s8(const_2, sign_up) |
| TBL v24.16b, {v7.16b},v22.16b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| ADD v18.16b, v18.16b , v3.16b //III edge_idx = vaddq_s8(edge_idx, sign_down) |
| |
| Uxtl v26.8h, v5.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| TBL v18.16b, {v6.16b},v18.16b //III vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| NEG v17.16b, v3.16b //III sign_up = vnegq_s8(sign_down) |
| |
| SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| // TBL v19.8b, {v6.16b},v19.8b //III vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| EXT v17.16b, v17.16b , v17.16b,#15 //III sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| AND v18.16b, v18.16b , v1.16b //III edge_idx = vandq_s8(edge_idx, au1_mask) |
| Uxtl v20.8h, v16.8b //III pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| |
| SMAX v26.8h, v26.8h , v2.8h //II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| TBL v3.16b, {v7.16b},v18.16b //III offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| SADDW v20.8h, v20.8h , v3.8b //III pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| |
| UMIN v26.8h, v26.8h , v4.8h //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| // TBL v25.8b, {v7.16b},v23.8b //II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| SMAX v20.8h, v20.8h , v2.8h //III pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| |
| Uxtl2 v28.8h, v5.16b //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| UMIN v20.8h, v20.8h , v4.8h //III pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| |
| SADDW2 v28.8h, v28.8h , v24.16b //II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| // TBL v11.8b, {v7.16b},v19.8b //III offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| SMAX v28.8h, v28.8h , v2.8h //II pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| |
| UMIN v28.8h, v28.8h , v4.8h //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) |
| Uxtl2 v18.8h, v16.16b //III pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| |
| mov v5.16b, v30.16b //III pu1_cur_row = pu1_next_row |
| xtn v26.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| xtn2 v26.16b, v28.8h //II vmovn_s16(pi2_tmp_cur_row.val[1]) |
| SADDW2 v18.8h, v18.8h , v3.16b //III pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| |
| SMAX v18.8h, v18.8h , v2.8h //III pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| xtn v20.8b, v20.8h //III vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| SUB x7,x7,#1 //III Decrement the ht_tmp loop count by 1 |
| UMIN v18.8h, v18.8h , v4.8h //III pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) |
| CMP x7,#1 //III |
| |
| ST1 { v26.16b},[x0],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| xtn2 v20.16b, v18.8h //III vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| BGT PU1_SRC_LOOP //III If not equal jump to PU1_SRC_LOOP |
| BLT INNER_LOOP_DONE |
| |
| ST1 { v20.16b},[x0],x1 //III vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| ADD x8,x0,x1 //*pu1_src + src_strd |
| |
| LDRB w2,[x0] //pu1_src_cpy[0] |
| LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| LDRB w5,[x8,#16] //pu1_src_cpy[src_strd + 16] |
| |
| SUB x11,x12,x7 //ht_tmp - row |
| mov v18.b[0], w5 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| ADD x11,x14,x11 //pu1_src_left_cpy[ht_tmp - row] |
| |
| SUB x11,x11,#1 |
| LDRB w5,[x11] //load the value |
| ADD x11,x11,#1 |
| EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| SUBS x4,x2,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| |
| cmhi v3.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| movn x20,#0 |
| csel x4, x20, x4,LT |
| |
| MOV x20,#1 |
| csel x4, x20, x4,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| cmhi v18.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| |
| mov v17.b[0], w4 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| SUB v3.16b, v18.16b , v3.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| ADD v18.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v18.16b, v18.16b , v3.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| |
| TBL v18.16b, {v6.16b},v18.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| NEG v17.16b, v3.16b //sign_up = vnegq_s8(sign_down) |
| |
| // TBL v19.8b, {v6.16b},v19.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| AND v18.16b, v18.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) |
| |
| TBL v3.16b, {v7.16b},v18.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| |
| Uxtl v20.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| // TBL v11.8b, {v7.16b},v19.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| SADDW v20.8h, v20.8h , v3.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| |
| SMAX v20.8h, v20.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| Uxtl2 v5.8h, v5.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| |
| UMIN v20.8h, v20.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| SADDW2 v5.8h, v5.8h , v3.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| |
| SMAX v5.8h, v5.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| UMIN v5.8h, v5.8h , v4.8h //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) |
| xtn2 v20.16b, v5.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| |
| INNER_LOOP_DONE: |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| ST1 { v20.16b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| MOV x2,x21 //Loads *pu1_src_left |
| |
| MOV x8,x17 //Loads ht |
| SUB x5,x5,#1 |
| |
| SUB x2,x2,#1 |
| SRC_LEFT_LOOP: |
| LDRB w7,[x5,#1]! //au1_src_left_tmp[row] |
| SUBS x8,x8,#1 |
| STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] |
| BNE SRC_LEFT_LOOP |
| |
| SUB x6,x6,#16 //Decrement the wd loop count by 16 |
| CMP x6,#8 //Check whether residue remains |
| BLT RE_ASSINING_LOOP //Jump to re-assigning loop |
| MOV x7,x16 //Loads wd |
| MOV x0,x15 //Loads *pu1_src |
| SUB x7,x7,x6 |
| ADD x0,x0,x7 |
| BGT WIDTH_LOOP_16 //If not equal jump to width_loop |
| BEQ WIDTH_RESIDUE //If residue remains jump to residue loop |
| |
| |
| WD_16_HT_4_LOOP: |
| MOV x7,x16 //Loads wd |
| MOV x5,x23 //Loads pu1_avail |
| CMP x6,x7 //col == wd |
| LDRb w20, [x5] //pu1_avail[0] |
| csel w8,w20,w8,EQ |
| MOV x20,#-1 |
| csel x8, x20, x8,NE //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) |
| |
| mov v1.b[0], w8 //au1_mask = vsetq_lane_s8((-1||pu1_avail[0]), au1_mask, 0) |
| CMP x6,#16 //if(col == 16) |
| BNE SKIP_AU1_MASK_VAL_WD_16_HT_4 |
| LDRB w8,[x5,#1] //pu1_avail[1] |
| mov v1.b[15], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) |
| |
| SKIP_AU1_MASK_VAL_WD_16_HT_4: |
| LDRB w8,[x5,#2] //pu1_avail[2] |
| CMP x8,#0 |
| |
| SUB x20,x0,x1 //pu1_src - src_strd |
| csel x8, x20, x8,EQ |
| csel x8, x3, x8,NE |
| SUB x8,x8,#1 //pu1_src_top_cpy - 1 || pu1_src - src_strd - 1 |
| |
| MOV x7,x16 //Loads wd |
| LD1 {v3.16b},[x8] //pu1_top_row = vld1q_u8(pu1_src - src_strd - 1) || vld1q_u8(pu1_src_top_cpy - 1) |
| ADD x3,x3,#16 |
| |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) |
| MOV x4,x17 //Loads ht |
| |
| SUB x7,x7,x6 //(wd - col) |
| cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| MOV x8,x19 //Loads *pu1_src |
| |
| ADD x7,x7,#15 //15 + (wd - col) |
| cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| ADD x7,x8,x7 //pu1_src[0 * src_strd + 15 + (wd - col)] |
| |
| SUB x5,x5,#1 |
| SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| AU1_SRC_LEFT_LOOP_WD_16_HT_4: |
| LDRB w8,[x7] //load the value and increment by src_strd |
| ADD x7,x7,x1 |
| SUBS x4,x4,#1 //decrement the loop count |
| STRB w8,[x5,#1]! //store it in the stack pointer |
| BNE AU1_SRC_LEFT_LOOP_WD_16_HT_4 |
| |
| movi v18.16b, #0 |
| MOV x7,x12 //row count, move ht_tmp to x7 |
| |
| PU1_SRC_LOOP_WD_16_HT_4: |
| ADD x8,x0,x1 //*pu1_src + src_strd |
| LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| |
| LDRB w5,[x8,#16] //pu1_src_cpy[src_strd + 16] |
| mov v18.b[0], w5 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| |
| CMP x7,x12 |
| BLT SIGN_UP_CHANGE_WD_16_HT_4 |
| MOV x5,x23 //Loads pu1_avail |
| LDRB w5,[x5,#2] //pu1_avail[2] |
| CMP x5,#0 |
| BNE SIGN_UP_CHANGE_DONE_WD_16_HT_4 |
| |
| SIGN_UP_CHANGE_WD_16_HT_4: |
| LDRB w8,[x0] //pu1_src_cpy[0] |
| SUB x5,x12,x7 //ht_tmp - row |
| ADD x5,x14,x5 //pu1_src_left_cpy[ht_tmp - row] |
| SUB x5,x5,#1 |
| LDRB w5,[x5] //load the value |
| SUBS x8,x8,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| movn x20,#0 |
| csel x8, x20, x8,LT |
| MOV x20,#1 |
| csel x8, x20, x8,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| mov v17.b[0], w8 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| |
| SIGN_UP_CHANGE_DONE_WD_16_HT_4: |
| cmhi v20.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| cmhi v22.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| SUB v24.16b, v22.16b , v20.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| ADD v26.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v26.16b, v26.16b , v24.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| TBL v26.16b, {v6.16b},v26.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| // TBL v27.8b, {v6.16b},v27.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| |
| AND v26.16b, v26.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) |
| |
| NEG v17.16b, v24.16b //sign_up = vnegq_s8(sign_down) |
| EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| TBL v24.16b, {v7.16b},v26.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| Uxtl v28.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| SADDW v28.8h, v28.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| UMIN v28.8h, v28.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| |
| // TBL v25.8b, {v7.16b},v27.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| Uxtl2 v30.8h, v5.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| SADDW2 v30.8h, v30.8h , v24.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| SMAX v30.8h, v30.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| UMIN v30.8h, v30.8h , v4.8h //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) |
| |
| xtn v28.8b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| xtn2 v28.16b, v30.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| ST1 { v28.16b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| mov v5.16b, v16.16b //pu1_cur_row = pu1_next_row |
| SUBS x7,x7,#1 //Decrement the ht_tmp loop count by 1 |
| BNE PU1_SRC_LOOP_WD_16_HT_4 //If not equal jump to PU1_SRC_LOOP_WD_16_HT_4 |
| |
| MOV x8,x17 //Loads ht |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| MOV x2,x21 //Loads *pu1_src_left |
| SUB x5,x5,#1 |
| SUB x2,x2,#1 |
| |
| SRC_LEFT_LOOP_WD_16_HT_4: |
| LDRB w7,[x5,#1]! //au1_src_left_tmp[row] |
| STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] |
| SUBS x8,x8,#1 |
| BNE SRC_LEFT_LOOP_WD_16_HT_4 |
| |
| SUBS x6,x6,#16 //Decrement the wd loop count by 16 |
| BLE RE_ASSINING_LOOP //Jump to re-assigning loop |
| |
| |
| WIDTH_RESIDUE: |
| MOV x7,x16 //Loads wd |
| MOV x5,x23 //Loads pu1_avail |
| CMP x6,x7 //wd_residue == wd |
| LDRb w20, [x5] //pu1_avail[0] |
| csel w8,w20,w8,EQ |
| |
| MOV x20,#-1 |
| csel x8, x20, x8,NE |
| mov v1.b[0], w8 //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) |
| |
| LDRB w8,[x5,#1] //pu1_avail[1] |
| mov v1.b[7], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) |
| |
| PU1_AVAIL_2_RESIDUE: |
| LDRB w11,[x5,#2] //pu1_avail[2] |
| LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) |
| CMP x11,#0 |
| |
| SUB x20,x0,x1 //pu1_src - src_strd |
| csel x8, x20, x8,EQ |
| csel x8, x3, x8,NE |
| |
| SUB x8,x8,#1 |
| |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| LD1 {v3.16b},[x8],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy - 1) |
| MOV x7,x16 //Loads wd |
| |
| MOV x4,x17 //Loads ht |
| cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| SUB x7,x7,#1 //(wd - 1) |
| |
| MOV x8,x19 //Loads *pu1_src |
| cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| SUB x5,x5,#1 |
| |
| ADD x7,x8,x7 //pu1_src[0 * src_strd + (wd - 1)] |
| SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| |
| AU1_SRC_LEFT_LOOP_RESIDUE: |
| LDRB w8,[x7] //load the value and increment by src_strd |
| ADD x7,x7,x1 |
| SUBS x4,x4,#1 //decrement the loop count |
| STRB w8,[x5,#1]! //store it in the stack pointer |
| BNE AU1_SRC_LEFT_LOOP_RESIDUE |
| |
| |
| MOV x7,x12 //row count, move ht_tmp to x7 |
| |
| PU1_SRC_LOOP_RESIDUE: |
| movi v18.16b, #0 |
| ADD x8,x0,x1 //*pu1_src + src_strd |
| LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| |
| LDRB w8,[x8,#16] //pu1_src_cpy[src_strd + 16] |
| mov v18.b[0], w8 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) |
| EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) |
| |
| CMP x7,x12 |
| BLT SIGN_UP_CHANGE_RESIDUE |
| MOV x5,x23 //Loads pu1_avail |
| LDRB w5,[x5,#2] //pu1_avail[2] |
| CMP x5,#0 |
| BNE SIGN_UP_CHANGE_DONE_RESIDUE |
| |
| SIGN_UP_CHANGE_RESIDUE: |
| LDRB w8,[x0] //pu1_src_cpy[0] |
| SUB x5,x12,x7 //ht_tmp - row |
| |
| ADD x5,x14,x5 |
| SUB x5,x5,#1 |
| LDRB w5,[x5] //load the value |
| SUBS x8,x8,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] |
| movn x20,#0 |
| csel x8, x20, x8,LT |
| MOV x20,#1 |
| csel x8, x20, x8,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) |
| mov v17.b[0], w8 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) |
| |
| SIGN_UP_CHANGE_DONE_RESIDUE: |
| cmhi v20.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) |
| cmhi v22.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) |
| SUB v24.16b, v22.16b , v20.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| ADD v26.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v26.16b, v26.16b , v24.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| TBL v26.16b, {v6.16b},v26.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| // TBL v27.8b, {v6.16b},v27.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| |
| AND v26.16b, v26.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) |
| |
| NEG v17.16b, v24.16b //sign_up = vnegq_s8(sign_down) |
| EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) |
| |
| TBL v24.8b, {v7.16b},v26.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| Uxtl v28.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| SADDW v28.8h, v28.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| UMIN v28.8h, v28.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) |
| |
| xtn v30.8b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| ST1 {v30.8b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| mov v5.16b, v16.16b //pu1_cur_row = pu1_next_row |
| SUBS x7,x7,#1 |
| BNE PU1_SRC_LOOP_RESIDUE |
| |
| MOV x8,x17 //Loads ht |
| ADD x5,sp,#0x42 //*au1_src_left_tmp |
| |
| MOV x2,x21 //Loads *pu1_src_left |
| SUB x5,x5,#1 |
| |
| SUB x2,x2,#1 |
| |
| SRC_LEFT_LOOP_RESIDUE: |
| LDRB w7,[x5,#1]! //au1_src_left_tmp[row] |
| SUBS x8,x8,#1 |
| STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] |
| BNE SRC_LEFT_LOOP_RESIDUE |
| |
| |
| RE_ASSINING_LOOP: |
| MOV x8,x17 //Loads ht |
| MOV x7,x16 //Loads wd |
| |
| MOV x0,x19 //Loads *pu1_src |
| SUB x8,x8,#1 //ht - 1 |
| |
| madd x6, x8, x1, x7 //wd - 1 + (ht - 1) * src_strd |
| STRB w9,[x0] //pu1_src_org[0] = u1_pos_0_0_tmp |
| |
| MOV x4,x24 //Loads pu1_src_top_left |
| ADD x6,x0,x6 //pu1_src[wd - 1 + (ht - 1) * src_strd] |
| |
| ADD x12,sp,#0x02 |
| SUB x6,x6,#1 |
| STRB w10,[x6] //pu1_src_org[wd - 1 + (ht - 1) * src_strd] = u1_pos_wd_ht_tmp |
| ADD x6,x6,#1 |
| |
| LDRB w11,[sp] //load u1_src_top_left_tmp from stack pointer |
| MOV x3,x22 //Loads pu1_src_top |
| |
| STRB w11,[x4] //*pu1_src_top_left = u1_src_top_left_tmp |
| |
| SRC_TOP_LOOP: |
| LD1 {v0.8b},[x12],#8 //pu1_src_top[col] = au1_src_top_tmp[col] |
| SUBS x7,x7,#8 //Decrement the width |
| ST1 {v0.8b},[x3],#8 //pu1_src_top[col] = au1_src_top_tmp[col] |
| BNE SRC_TOP_LOOP |
| |
| END_LOOPS: |
| ADD sp,sp,#0xA0 |
| // LDMFD sp!,{x4-x12,x15} //Reload the registers from SP |
| ldp x23, x24,[sp],#16 |
| ldp x21, x22,[sp],#16 |
| ldp x19, x20,[sp],#16 |
| |
| ret |
| |
| |
| |
