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 @* @file 20 @* ihevc_deblk_luma_horz.s 21 @* 22 @* @brief 23 @* contains function definitions for inter prediction interpolation. 24 @* functions are coded using neon intrinsics and can be compiled using 25 26 @* rvct 27 @* 28 @* @author 29 @* anand s 30 @* 31 @* @par list of functions: 32 @* 33 @* 34 @* @remarks 35 @* none 36 @* 37 @*******************************************************************************/ 38 39 .equ qp_offset_u_offset, 40 40 .equ qp_offset_v_offset, 44 41 .equ tc_offset_div2_offset, 48 42 .equ filter_p_offset, 52 43 .equ filter_q_offset, 56 44 45 .text 46 .align 4 47 48 49 50 51 .extern gai4_ihevc_qp_table 52 .extern gai4_ihevc_tc_table 53 .globl ihevc_deblk_chroma_horz_a9q 54 55 gai4_ihevc_qp_table_addr: 56 .long gai4_ihevc_qp_table - ulbl1 - 8 57 58 gai4_ihevc_tc_table_addr: 59 .long gai4_ihevc_tc_table - ulbl2 - 8 60 61 .type ihevc_deblk_chroma_horz_a9q, %function 62 63 ihevc_deblk_chroma_horz_a9q: 64 push {r4-r12,lr} 65 sub r12,r0,r1 66 vld1.8 {d0},[r0] 67 sub r5,r12,r1 68 add r6,r0,r1 69 add r1,r2,r3 70 vmovl.u8 q0,d0 71 ldr r10,[sp,#qp_offset_u_offset] 72 vld1.8 {d2},[r12] 73 add r2,r1,#1 74 ldr r4,[sp,#tc_offset_div2_offset] 75 vld1.8 {d4},[r5] 76 ldr r8,[sp,#filter_p_offset] 77 vld1.8 {d16},[r6] 78 ldr r9,[sp,#filter_q_offset] 79 adds r1,r10,r2,asr #1 80 vmovl.u8 q1,d2 81 ldr r7,[sp,#qp_offset_v_offset] 82 ldr r3,gai4_ihevc_qp_table_addr 83 ulbl1: 84 add r3, r3, pc 85 bmi l1.3312 86 cmp r1,#0x39 87 ldrle r1,[r3,r1,lsl #2] 88 subgt r1,r1,#6 89 l1.3312: 90 adds r2,r7,r2,asr #1 91 vmovl.u8 q2,d4 92 bmi l1.3332 93 cmp r2,#0x39 94 ldrle r2,[r3,r2,lsl #2] 95 subgt r2,r2,#6 96 l1.3332: 97 add r1,r1,r4,lsl #1 98 vsub.i16 q3,q0,q1 99 add r3,r1,#2 100 cmp r3,#0x35 101 movgt r1,#0x35 102 vshl.i16 q3,q3,#2 103 vmovl.u8 q8,d16 104 bgt l1.3368 105 adds r3,r1,#2 106 addpl r1,r1,#2 107 movmi r1,#0 108 l1.3368: 109 ldr r3,gai4_ihevc_tc_table_addr 110 ulbl2: 111 add r3, r3, pc 112 vadd.i16 q2,q3,q2 113 add r2,r2,r4,lsl #1 114 vsub.i16 q3,q2,q8 115 add r4,r2,#2 116 ldr r1,[r3,r1,lsl #2] 117 cmp r4,#0x35 118 movgt r2,#0x35 119 bgt l1.3412 120 adds r4,r2,#2 121 addpl r2,r2,#2 122 movmi r2,#0 123 l1.3412: 124 125 126 ldr r2,[r3,r2,lsl #2] 127 cmp r8,#0 128 vdup.16 q8,r2 129 vdup.16 q2,r1 130 rsb r1,r1,#0 131 vrshr.s16 q3,q3,#3 132 vdup.16 q9,r1 133 rsb r1,r2,#0 134 vzip.16 q2,q8 135 vdup.16 q10,r1 136 137 vzip.16 q9,q10 138 139 vmin.s16 q8,q3,q2 140 vmax.s16 q2,q9,q8 141 vadd.i16 q1,q1,q2 142 vsub.i16 q0,q0,q2 143 vqmovun.s16 d2,q1 144 vqmovun.s16 d0,q0 145 beq l1.3528 146 vst1.8 {d2},[r12] 147 l1.3528: 148 cmp r9,#0 149 beq l1.3540 150 vst1.8 {d0},[r0] 151 l1.3540: 152 pop {r4-r12,pc} 153 154 155
