| ///***************************************************************************** |
| //* |
| //* 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_class1.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_class1(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_class1_av8 |
| |
| ihevc_sao_edge_offset_class1_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 |
| |
| |
| stp x19, x20,[sp,#-16]! |
| |
| SUB x9,x7,#1 //wd - 1 |
| LDRB w10,[x3,x9] //pu1_src_top[wd - 1] |
| STRB w10,[x4] //*pu1_src_top_left = pu1_src_top[wd - 1] |
| ADD x10,x0,x9 //pu1_src[row * src_strd + wd - 1] |
| MOV x11,x2 //Move pu1_src_left pointer to x11 |
| MOV x12,x8 //Move ht to x12 for loop count |
| SRC_LEFT_LOOP: |
| LDRB w14,[x10] //Load pu1_src[row * src_strd + wd - 1] |
| ADD x10,x10,x1 |
| STRB w14,[x11],#1 //pu1_src_left[row] |
| SUBS x12, x12,#1 //Decrement the loop count |
| BNE SRC_LEFT_LOOP //If not equal to 0 jump to the src_left_loop |
| |
| SUB x12,x8,#1 //ht - 1 |
| mul x12, x12, x1 //(ht - 1) * src_strd |
| ADD x12,x12,x0 //pu1_src[(ht - 1) * src_strd] |
| |
| LDRB w4,[x5,#2] //pu1_avail[2] |
| CMP x4,#0 //0 == pu1_avail[2] |
| ADD x20,x0,x1 //pu1_src += src_strd |
| csel x0, x20, x0,EQ |
| SUB x20,x8,#1 //ht-- |
| csel x8, x20, x8,EQ |
| |
| LDRB w4,[x5,#3] //pu1_avail[3] |
| CMP x4,#0 //0 == pu1_avail[3] |
| SUB x20,x8,#1 //ht-- |
| csel x8, x20, x8,EQ |
| |
| movi v0.16b, #2 //const_2 = vdupq_n_s8(2) |
| movi v2.8h, #0 //const_min_clip = vdupq_n_s16(0) |
| movi v4.8h, #255 //const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) |
| ADRP x14, :got:gi1_table_edge_idx //table pointer |
| LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] |
| LD1 {v6.8b},[x14] //edge_idx_tbl = vld1_s8(gi1_table_edge_idx) |
| LD1 {v7.8b},[x6] //offset_tbl = vld1_s8(pi1_sao_offset) |
| |
| CMP x7,#16 //Compare wd with 16 |
| BLT WIDTH_RESIDUE //If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case |
| |
| WIDTH_LOOP_16: |
| LDRB w4,[x5,#2] //pu1_avail[2] |
| CMP x4,#0 //0 == pu1_avail[2] |
| SUB x20,x0,x1 //pu1_src -= src_strd |
| csel x9, x20, x9,EQ |
| csel x9, x3, x9,NE //*pu1_src_top |
| |
| MOV x10,x0 //*pu1_src |
| |
| LD1 {v1.16b},[x9],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) |
| LD1 {v3.16b},[x0],#16 //pu1_cur_row = vld1q_u8(pu1_src) |
| |
| LD1 {v30.16b},[x12],#16 //vld1q_u8(pu1_src[(ht - 1) * src_strd]) |
| cmhi v5.16b, v3.16b , v1.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| |
| ST1 { v30.16b},[x3],#16 //vst1q_u8(pu1_src_top[col]) |
| cmhi v17.16b, v1.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| |
| SUB v16.16b, v17.16b , v5.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| MOV x11,x8 //move ht to x11 for loop count |
| |
| PU1_SRC_LOOP: |
| ADD x10,x10,x1 //*pu1_src + src_strd |
| LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| ADD x6,x10,x1 //II Iteration *pu1_src + src_strd |
| |
| cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| LD1 {v30.16b},[x6] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| |
| cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| SUB x10,x10,x1 |
| |
| SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| Uxtl v26.8h, v18.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| |
| ADD v5.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| Uxtl2 v28.8h, v18.16b //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| |
| ADD v5.16b, v5.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| cmhi v22.16b, v18.16b , v30.16b //II vcgtq_u8(pu1_cur_row, pu1_top_row) |
| |
| NEG v16.16b, v20.16b //sign_up = vnegq_s8(sign_down) |
| TBL v5.16b, {v6.16b},v5.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| cmhi v24.16b, v30.16b , v18.16b //II vcltq_u8(pu1_cur_row, pu1_top_row) |
| |
| SUB v1.16b, v24.16b , v22.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| // TBL v13.8b, {v6.16b},v13.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| ADD v22.16b, v0.16b , v16.16b //II edge_idx = vaddq_s8(const_2, sign_up) |
| |
| |
| NEG v16.16b, v1.16b //II sign_up = vnegq_s8(sign_down) |
| TBL v5.16b, {v7.16b},v5.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| ADD v22.16b, v22.16b , v1.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) |
| |
| |
| Uxtl v20.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| TBL v22.16b, {v6.16b},v22.16b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| SADDW v20.8h, v20.8h , v5.8b //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) |
| // TBL v23.8b, {v6.16b},v23.8b //II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| 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)) |
| |
| |
| Uxtl2 v1.8h, v3.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| // TBL v13.8b, {v7.16b},v13.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| mov v3.16b, v30.16b //II pu1_cur_row = pu1_next_row |
| |
| SADDW2 v1.8h, v1.8h , v5.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| TBL v24.16b, {v7.16b},v22.16b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| SMAX v1.8h, v1.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| |
| UMIN v1.8h, v1.8h , 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)) |
| // TBL v25.8b, {v7.16b},v23.8b //II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| |
| xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| |
| xtn2 v20.16b, v1.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) |
| SADDW2 v28.8h, v28.8h , v24.16b //II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| |
| |
| 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) |
| 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)) |
| |
| 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)) |
| ST1 { v20.16b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| xtn v30.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) |
| SUBS x11,x11,#2 //II Decrement the ht loop count by 1 |
| xtn2 v30.16b, v28.8h //II vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| ST1 { v30.16b},[x10],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| BEQ PU1_SRC_LOOP_END //if 0 == pu1_avail[3] || 0 == pu1_avail[2] ht = ht-- |
| CMP x11,#1 //checking any residue remains |
| BGT PU1_SRC_LOOP //If not equal jump to PU1_SRC_LOOP |
| |
| ADD x10,x10,x1 //*pu1_src + src_strd |
| LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| SUB x10,x10,x1 |
| |
| ADD v22.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v22.16b, v22.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| TBL v22.16b, {v6.16b},v22.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| // TBL v23.8b, {v6.16b},v23.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) |
| |
| TBL v24.16b, {v7.16b},v22.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| Uxtl v26.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| SADDW v26.8h, v26.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| SMAX v26.8h, v26.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| UMIN v26.8h, v26.8h , 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},v23.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) |
| Uxtl2 v28.8h, v3.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) |
| SADDW2 v28.8h, v28.8h , v24.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) |
| SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) |
| UMIN v28.8h, v28.8h , 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 v30.8b, v26.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| xtn2 v30.16b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) |
| |
| ST1 { v30.16b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| PU1_SRC_LOOP_END: |
| mov v3.16b, v18.16b //pu1_cur_row = pu1_next_row |
| SUBS x7,x7,#16 //Decrement the wd loop count by 16 |
| CMP x7,#8 //Check whether residue remains |
| BEQ WIDTH_RESIDUE //If residue remains jump to residue loop |
| BGT WIDTH_LOOP_16 //If not equal jump to width_loop |
| BLT END_LOOPS //Jump to end function |
| |
| |
| WIDTH_RESIDUE: |
| LDRB w4,[x5,#2] //pu1_avail[2] |
| CMP x4,#0 //0 == pu1_avail[2] |
| SUB x20,x0,x1 //pu1_src -= src_strd |
| csel x9, x20, x9,EQ |
| csel x9, x3, x9,NE //*pu1_src_top |
| MOV x10,x0 |
| |
| LD1 {v1.16b},[x9],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) |
| LD1 {v3.16b},[x0],#16 //pu1_cur_row = vld1q_u8(pu1_src) |
| |
| LD1 {v30.8b},[x12] //vld1_u8(pu1_src[(ht - 1) * src_strd]) |
| ST1 {v30.8b},[x3] //vst1_u8(pu1_src_top[col]) |
| |
| cmhi v5.16b, v3.16b , v1.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) |
| cmhi v17.16b, v1.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) |
| SUB v16.16b, v17.16b , v5.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| MOV x11,x8 //move ht to x11 for loop count |
| |
| PU1_SRC_LOOP_RESIDUE: |
| ADD x10,x10,x1 //*pu1_src + src_strd |
| LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| ADD x6,x10,x1 //II Iteration *pu1_src + src_strd |
| |
| cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row) |
| LD1 {v30.16b},[x6] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| |
| cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_next_row) |
| SUB x10,x10,x1 |
| |
| SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| Uxtl v26.8h, v18.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| |
| ADD v5.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| cmhi v22.16b, v18.16b , v30.16b //II vcgtq_u8(pu1_cur_row, pu1_next_row) |
| |
| ADD v5.16b, v5.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| cmhi v24.16b, v30.16b , v18.16b //II vcltq_u8(pu1_cur_row, pu1_next_row) |
| |
| NEG v16.16b, v20.16b //sign_up = vnegq_s8(sign_down) |
| TBL v5.8b, {v6.16b},v5.8b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| SUB v20.16b, v24.16b , v22.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| |
| ADD v22.16b, v0.16b , v16.16b //II edge_idx = vaddq_s8(const_2, sign_up) |
| TBL v5.8b, {v7.16b},v5.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| NEG v16.16b, v20.16b //II sign_up = vnegq_s8(sign_down) |
| |
| ADD v22.16b, v22.16b , v20.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) |
| Uxtl v20.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| |
| SADDW v20.8h, v20.8h , v5.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| TBL v22.8b, {v6.16b},v22.8b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| SMAX v20.8h, v20.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| |
| 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)) |
| TBL v24.8b, {v7.16b},v22.8b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| 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) |
| 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)) |
| |
| mov v3.16b, v30.16b //II pu1_cur_row = pu1_next_row |
| ST1 {v20.8b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| xtn v30.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| SUBS x11,x11,#2 //Decrement the ht loop count by 1 |
| ST1 {v30.8b},[x10],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| BEQ END_LOOPS |
| CMP x11,#1 |
| BGT PU1_SRC_LOOP_RESIDUE //If not equal jump to PU1_SRC_LOOP |
| |
| |
| ADD x10,x10,x1 //*pu1_src + src_strd |
| LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) |
| cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row) |
| cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_next_row) |
| SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) |
| SUB x10,x10,x1 |
| |
| ADD v22.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) |
| ADD v22.16b, v22.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) |
| TBL v22.8b, {v6.16b},v22.8b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) |
| |
| TBL v24.8b, {v7.16b},v22.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) |
| Uxtl v26.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) |
| SADDW v26.8h, v26.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) |
| SMAX v26.8h, v26.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) |
| UMIN v26.8h, v26.8h , 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, v26.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) |
| |
| ST1 {v30.8b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) |
| |
| END_LOOPS: |
| // LDMFD sp!,{x4-x12,x15} //Reload the registers from SP |
| ldp x19, x20,[sp], #16 |
| |
| ret |
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