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@/*****************************************************************************
@*
@* 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_deblk_luma_vert.s
@*
@* @brief
@* contains function definitions for inter prediction interpolation.
@* functions are coded using neon intrinsics and can be compiled using
@* rvct
@*
@* @author
@* anand s
@*
@* @par list of functions:
@*
@*
@* @remarks
@* none
@*
@*******************************************************************************/
.equ qp_offset_u_offset, 40
.equ qp_offset_v_offset, 44
.equ tc_offset_div2_offset, 48
.equ filter_p_offset, 52
.equ filter_q_offset, 56
.text
.align 4
.extern gai4_ihevc_qp_table
.extern gai4_ihevc_tc_table
.globl ihevc_deblk_chroma_vert_a9q
gai4_ihevc_qp_table_addr:
.long gai4_ihevc_qp_table - ulbl1 - 8
gai4_ihevc_tc_table_addr:
.long gai4_ihevc_tc_table - ulbl2 - 8
.type ihevc_deblk_chroma_vert_a9q, %function
ihevc_deblk_chroma_vert_a9q:
push {r4-r12,lr}
sub r8,r0,#4
add r2,r2,r3
vld1.8 {d5},[r8],r1
add r2,r2,#1
vld1.8 {d17},[r8],r1
ldr r7,[sp,#qp_offset_u_offset]
vld1.8 {d16},[r8],r1
ldr r4,[sp,#filter_q_offset]
vld1.8 {d4},[r8]
ldr r5,[sp,#tc_offset_div2_offset]
vtrn.8 d5,d17
adds r3,r7,r2,asr #1
vtrn.8 d16,d4
ldr r7,gai4_ihevc_qp_table_addr
ulbl1:
add r7,r7,pc
ldr r12,[sp,#filter_p_offset]
ldr r6,[sp,#qp_offset_v_offset]
bmi l1.2944
cmp r3,#0x39
ldrle r3,[r7,r3,lsl #2]
subgt r3,r3,#6
l1.2944:
vtrn.16 d5,d16
adds r2,r6,r2,asr #1
vtrn.16 d17,d4
bmi l1.2964
cmp r2,#0x39
ldrle r2,[r7,r2,lsl #2]
subgt r2,r2,#6
l1.2964:
vtrn.32 d5,d17
add r3,r3,r5,lsl #1
vtrn.32 d16,d4
add r6,r3,#2
vmovl.u8 q9,d17
cmp r6,#0x35
movgt r3,#0x35
bgt l1.2996
adds r6,r3,#2
addpl r3,r3,#2
movmi r3,#0
l1.2996:
vsubl.u8 q0,d17,d16
ldr r6,gai4_ihevc_tc_table_addr
ulbl2:
add r6,r6,pc
vshl.i16 q0,q0,#2
add r2,r2,r5,lsl #1
add r5,r2,#2
vaddw.u8 q0,q0,d5
cmp r5,#0x35
ldr r3,[r6,r3,lsl #2]
vsubw.u8 q2,q0,d4
movgt r2,#0x35
bgt l1.3036
adds r5,r2,#2
addpl r2,r2,#2
movmi r2,#0
l1.3036:
vrshr.s16 q3,q2,#3
vdup.16 d2,r3
ldr r2,[r6,r2,lsl #2]
rsb r3,r3,#0
cmp r12,#0
vdup.16 d3,r2
rsb r2,r2,#0
vdup.16 d30,r3
vdup.16 d31,r2
vmin.s16 q2,q3,q1
vmax.s16 q1,q15,q2
vmovl.u8 q3,d16
vadd.i16 q0,q3,q1
vsub.i16 q1,q9,q1
vqmovun.s16 d0,q0
sub r2,r0,#2
vqmovun.s16 d1,q1
vtrn.32 d0,d1
vtrn.8 d0,d1
beq l1.3204
vst1.16 {d0[0]},[r2],r1
vst1.16 {d1[0]},[r2],r1
vst1.16 {d0[1]},[r2],r1
vst1.16 {d1[1]},[r2]
l1.3204:
cmp r4,#0
beq l1.3228
vst1.16 {d0[2]},[r0],r1
vst1.16 {d1[2]},[r0],r1
vst1.16 {d0[3]},[r0],r1
vst1.16 {d1[3]},[r0]
l1.3228:
pop {r4-r12,pc}
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