| ///***************************************************************************** |
| //* |
| //* 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. |
| //* |
| //*****************************************************************************/ |
| ///** |
| ///** |
| //******************************************************************************* |
| //* |
| //* //brief |
| //* interprediction luma function for copy |
| //* |
| //* //par description: |
| //* copies the array of width 'wd' and height 'ht' from the location pointed |
| //* by 'src' to the location pointed by 'dst' |
| //* |
| //* //param[in] pu1_src |
| //* uword8 pointer to the source |
| //* |
| //* //param[out] pu1_dst |
| //* uword8 pointer to the destination |
| //* |
| //* //param[in] src_strd |
| //* integer source stride |
| //* |
| //* //param[in] dst_strd |
| //* integer destination stride |
| //* |
| //* //param[in] pi1_coeff |
| //* word8 pointer to the filter coefficients |
| //* |
| //* //param[in] ht |
| //* integer height of the array |
| //* |
| //* //param[in] wd |
| //* integer width of the array |
| //* |
| //* //returns |
| //* |
| //* //remarks |
| //* none |
| //* |
| //******************************************************************************* |
| //*/ |
| //void ihevc_inter_pred_luma_copy ( |
| // uword8 *pu1_src, |
| // uword8 *pu1_dst, |
| // word32 src_strd, |
| // word32 dst_strd, |
| // word8 *pi1_coeff, |
| // word32 ht, |
| // word32 wd ) |
| |
| //**************variables vs registers***************************************** |
| // x0 => *pu1_src |
| // x1 => *pu1_dst |
| // x2 => src_strd |
| // x3 => dst_strd |
| // x11 => ht |
| // x16 => wd |
| |
| .text |
| .align 4 |
| |
| .include "ihevc_neon_macros.s" |
| |
| .globl ihevc_inter_pred_luma_copy_av8 |
| |
| .type ihevc_inter_pred_luma_copy_av8, %function |
| |
| ihevc_inter_pred_luma_copy_av8: |
| // stmfd sp!, {x8-x16, lr} //stack stores the values of the arguments |
| stp x19,x20,[sp, #-16]! |
| mov x16,x6 //loads wd |
| mov x11,x5 //loads ht |
| cmp x11,#0 //checks ht == 0 |
| ble end_loops |
| tst x16,#15 //checks wd for multiples for 4 & 8 |
| beq core_loop_wd_16 |
| tst x16,#7 //checks wd for multiples for 4 & 8 |
| beq core_loop_wd_8 |
| sub x15,x16,#4 |
| |
| outer_loop_wd_4: |
| subs x8,x16,#0 //checks wd == 0 |
| ble end_inner_loop_wd_4 |
| |
| inner_loop_wd_4: |
| ld1 {v0.s}[0],[x0] //vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add x9,x0,x2 //pu1_src_tmp += src_strd |
| add x10,x1,x3 //pu1_dst_tmp += dst_strd |
| st1 {v0.s}[0],[x1] //vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| ld1 {v0.s}[0],[x9],x2 //vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add x0,x0,#4 //pu1_src += 4 |
| st1 {v0.s}[0],[x10],x3 //vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| ld1 {v0.s}[0],[x9],x2 //vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| subs x8,x8,#4 //(wd -4) |
| st1 {v0.s}[0],[x10],x3 //vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| ld1 {v0.s}[0],[x9],x2 //vld1_lane_u32((uint32_t *)pu1_src_tmp, src_tmp, 0) |
| add x1,x1,#4 //pu1_dst += 4 |
| st1 {v0.s}[0],[x10],x3 //vst1_lane_u32((uint32_t *)pu1_dst_tmp, src_tmp, 0) |
| |
| bgt inner_loop_wd_4 |
| |
| end_inner_loop_wd_4: |
| subs x11,x11,#4 //ht - 4 |
| sub x0,x9,x15 //pu1_src = pu1_src_tmp |
| sub x1,x10,x15 //pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_4 |
| |
| end_loops: |
| // ldmfd sp!,{x8-x16,pc} //reload the registers from sp |
| // MRS x20,PMCCFILTR_EL0 |
| sub x0,x20,x19 |
| ldp x19,x20,[sp],#16 |
| ret |
| |
| |
| core_loop_wd_8: |
| sub x15,x16,#8 |
| |
| outer_loop_wd_8: |
| subs x8,x16,#0 //checks wd |
| ble end_inner_loop_wd_8 |
| |
| inner_loop_wd_8: |
| add x9,x0,x2 //pu1_src_tmp += src_strd |
| ld1 {v0.8b},[x0],#8 //vld1_u8(pu1_src_tmp) |
| add x10,x1,x3 //pu1_dst_tmp += dst_strd |
| st1 {v0.8b},[x1],#8 //vst1_u8(pu1_dst_tmp, tmp_src) |
| ld1 {v1.8b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v1.8b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| subs x8,x8,#8 //wd - 8(loop condition) |
| ld1 {v2.8b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v2.8b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| ld1 {v3.8b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v3.8b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| bgt inner_loop_wd_8 |
| |
| end_inner_loop_wd_8: |
| subs x11,x11,#4 //ht -= 4 |
| sub x0,x9,x15 //pu1_src = pu1_src_tmp |
| sub x1,x10,x15 //pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_8 |
| |
| // ldmfd sp!,{x8-x16,pc} //reload the registers from sp |
| // MRS x20,PMCCFILTR_EL0 |
| sub x0,x20,x19 |
| ldp x19,x20,[sp],#16 |
| ret |
| |
| core_loop_wd_16: |
| sub x15,x16,#16 |
| |
| outer_loop_wd_16: |
| subs x8,x16,#0 //checks wd |
| ble end_inner_loop_wd_16 |
| |
| inner_loop_wd_16: |
| add x9,x0,x2 //pu1_src_tmp += src_strd |
| ld1 {v0.16b},[x0],#16 //vld1_u8(pu1_src_tmp) |
| add x10,x1,x3 //pu1_dst_tmp += dst_strd |
| st1 {v0.16b},[x1],#16 //vst1_u8(pu1_dst_tmp, tmp_src) |
| ld1 {v1.16b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v1.16b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| subs x8,x8,#16 //wd - 8(loop condition) |
| ld1 {v2.16b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v2.16b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| ld1 {v3.16b},[x9],x2 //vld1_u8(pu1_src_tmp) |
| st1 {v3.16b},[x10],x3 //vst1_u8(pu1_dst_tmp, tmp_src) |
| bgt inner_loop_wd_16 |
| |
| end_inner_loop_wd_16: |
| subs x11,x11,#4 //ht -= 4 |
| sub x0,x9,x15 //pu1_src = pu1_src_tmp |
| sub x1,x10,x15 //pu1_dst = pu1_dst_tmp |
| bgt outer_loop_wd_16 |
| |
| // ldmfd sp!,{x8-x16,pc} //reload the registers from sp |
| // MRS x20,PMCCFILTR_EL0 |
| sub x0,x20,x19 |
| ldp x19,x20,[sp],#16 |
| ret |
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