| @/***************************************************************************** |
| @* |
| @* 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 |
| @* |
| @*******************************************************************************/ |
| |
| .text |
| .align 4 |
| |
| |
| |
| |
| |
| .extern gai4_ihevc_tc_table |
| .extern gai4_ihevc_beta_table |
| .globl ihevc_deblk_luma_horz_a9q |
| |
| gai4_ihevc_tc_table_addr: |
| .long gai4_ihevc_tc_table - ulbl1 - 8 |
| |
| gai4_ihevc_beta_table_addr: |
| .long gai4_ihevc_beta_table - ulbl2 - 8 |
| |
| .type ihevc_deblk_luma_horz_a9q, %function |
| |
| ihevc_deblk_luma_horz_a9q: |
| stmfd sp!, {r3-r12,lr} |
| ldr r4,[sp,#0x2c] |
| ldr r5,[sp,#0x30] |
| |
| add r3,r3,r4 |
| add r3,r3,#1 |
| ldr r6, [sp,#0x34] |
| asr r3,r3,#1 |
| add r7,r3,r5,lsl #1 |
| add r3,r3,r6,lsl #1 |
| cmp r7,#0x33 |
| movgt r7,#0x33 |
| bgt l1.1532 |
| cmp r7,#0x0 |
| movlt r7,#0x0 @ r7 has the beta_index value |
| l1.1532: |
| @ bic r2,r2,#1 |
| asr r2,r2,#1 |
| |
| add r3,r3,r2,lsl #1 |
| cmp r3,#0x35 |
| movgt r3,#0x35 |
| bgt l1.1564 |
| cmp r3,#0x0 |
| movlt r3,#0x0 @ r3 has the tc_index value |
| |
| @ qp_luma = (quant_param_p + quant_param_q + 1) >> 1@ |
| @ beta_indx = clip3(qp_luma + (beta_offset_div2 << 1), 0, 51)@ |
| @ tc_indx = clip3(qp_luma + (2 * (bs >> 1)) + (tc_offset_div2 << 1), 0, 53)@ |
| |
| l1.1564: |
| ldr r2,gai4_ihevc_beta_table_addr |
| ulbl2: |
| add r2,r2,pc |
| ldr r4,gai4_ihevc_tc_table_addr |
| ulbl1: |
| add r4,r4,pc |
| |
| ldr r5,[r2,r7,lsl #2] @ beta |
| ldr r6,[r4,r3,lsl #2] @ tc |
| |
| |
| |
| cmp r6,#0 |
| beq l1.2404 |
| vmov.i16 d0,#0x2 |
| lsl r7,r6,#1 |
| add r14,r1,r1,lsl #1 |
| ldr r8,[r0,-r14] @ -3 value |
| vdup.8 d1,r7 |
| ldr r10,[r0,-r1,lsl #1] @-2 value |
| vdup.32 d23,r8 @ -3 value |
| ldr r11,[r0,-r1] @-1 value |
| vdup.32 d24,r10 @ -2 value |
| and r8,#0xff |
| ldr r12,[r0,#0] @ 0 value |
| vdup.32 d25, r11 @-1 value |
| and r10,#0xff |
| ldr r9,[r0,r1] @ 1 value |
| vdup.32 d26,r12 @ 0 value |
| and r11,#0xff |
| ldr r2,[r0,r1,lsl #1] @ 2 value |
| vdup.32 d27,r9 @ 1value |
| and r12,#0xff |
| vdup.32 d28,r2 @ 2 value |
| and r9,#0xff |
| and r2,#0xff |
| |
| add r12,r12,r2 |
| subs r9,r12,r9,lsl #1 @ dq0 value is stored in r9 |
| rsbmi r9,r9,#0 |
| @dq0 = abs( pu1_src[2] - 2 * pu1_src[1] + pu1_src[0] )@ |
| |
| add r8,r8,r11 |
| subs r8,r8,r10,lsl #1 |
| rsbmi r8,r8,#0 @ dp0 value is stored in r8 |
| @ dp0 = abs( pu1_src[-3] - 2 * pu1_src[-2] + pu1_src[-1] )@ |
| |
| |
| |
| add r3,r1,r1,lsl #1 |
| add r14,r0,#3 |
| |
| |
| ldrb r2,[r14,-r3] @ -2 value |
| ldrb r10,[r14,-r1,lsl #1] @ -2 value |
| ldrb r11,[r14,-r1] @ -1 value |
| ldrb r12,[r14,#0] @ 0 value |
| ldrb r3,[r14,r1] @ 1 value |
| ldrb r4,[r14,r1,lsl #1] @ 2 value |
| |
| |
| add r12,r12,r4 |
| subs r12,r12,r3,lsl #1 @ dq3value is stored in r12 |
| rsbmi r12,r12,#0 |
| @ dq3 = abs( pu1_src[3 * src_strd + 2] - 2 * pu1_src[3 * src_strd + 1]+ pu1_src[3 * src_strd + 0] )@ |
| |
| |
| add r2,r2,r11 |
| subs r11,r2,r10,lsl #1 |
| rsbmi r11,r11,#0 @ dp3 value is stored in r8 |
| @ dp3 = abs( pu1_src[3 * src_strd - 3] - 2 * pu1_src[3 * src_strd - 2] + pu1_src[3 * src_strd - 1] )@ |
| |
| |
| |
| add r3,r8,r9 @ r3 has the d0 value |
| add r4,r11,r12 @ r4 has the d3 value |
| |
| |
| @ d0 = dp0 + dq0@ |
| @ d3 = dp3 + dq3@ |
| |
| add r14,r8,r11 @ r13 has the value dp |
| add r12,r12,r9 @ r12 has the value dq |
| @ dp = dp0 + dp3@ |
| @ dq = dq0 + dq3@ |
| |
| add r11, r3, r4 @ r3 has the value d |
| |
| @ d = d0 + d3@ |
| |
| |
| cmp r11,r5 |
| bge l1.2404 |
| |
| @ if(d < beta) |
| |
| |
| @ registers which cannont be altered : r3,r4 r5,r6,r12,r13,r0,r1,r11 |
| |
| @ registers for use: r2,r7,r8,r9,r10, |
| |
| asr r10,r5,#2 |
| vqadd.u8 d30,d26,d1 |
| cmp r10,r3,lsl #1 |
| vqsub.u8 d31,d26,d1 |
| ble l1.1840 |
| add r10,r1,r1,lsl #1 |
| vaddl.u8 q3,d25,d26 |
| ldr r2,[r0,-r1,lsl #2] @ has the -4 value |
| ldrb r7,[r0,-r1] @ has the -1 value |
| vdup.32 d22,r2 @ -4 value |
| vaddw.u8 q4,q3,d27 |
| ldrb r3,[r0,#0] @ r4 has the 0 value |
| vqadd.u8 d16,d27,d1 |
| and r2,#0xff |
| vmul.i16 q6,q4,d0[0] |
| ldr r8,[r0,r10] @ has the 3 value |
| vaddl.u8 q5,d24,d28 |
| subs r2,r2,r7 |
| vqsub.u8 d17,d27,d1 |
| vdup.32 d29,r8 @ 3 value |
| and r8,#0xff |
| vadd.i16 q6,q6,q5 |
| rsbmi r2,r2,#0 |
| vrshrn.i16 d20,q6,#3 |
| subs r8,r8,r3 |
| rsbmi r8,r8,#0 |
| vmin.u8 d18,d20,d30 |
| add r8,r8,r2 |
| |
| cmp r8,r5,asr #3 |
| bge l1.1840 |
| vaddw.u8 q7,q4,d28 |
| subs r7,r3,r7 |
| vmax.u8 d4,d18,d31 |
| rsbmi r7,r7,#0 |
| vqadd.u8 d30,d28,d1 |
| mov r10,#5 |
| vrshrn.i16 d21,q7,#2 |
| mul r10,r10,r6 |
| vqsub.u8 d31,d28,d1 |
| add r10,#1 |
| cmp r7,r10,asr #1 |
| vmin.u8 d18,d21,d16 |
| bge l1.1840 |
| |
| |
| @ if( (2 * d3 < (beta >> 2)&& ( abs(pu1_src[3] - pu1_src[0]) + abs(pu1_src[-1] - pu1_src[-4]) < (beta >> 3) ) |
| @ && abs(pu1_src[0] - pu1_src[-1]) < ( (5 * tc + 1) >> 1 ) ) |
| |
| vmax.u8 d5,d18,d17 |
| asr r10,r5,#2 |
| vaddl.u8 q8,d29,d28 |
| cmp r10,r4,lsl #1 |
| ble l1.1840 |
| |
| add r10,r1,r1,lsl #1 |
| vmul.i16 q8,q8,d0[0] |
| add r4,r0,#3 |
| |
| |
| ldrb r2,[r4,-r1,lsl #2] |
| vadd.i16 q8,q8,q7 |
| ldrb r7,[r4,-r1] |
| vrshrn.i16 d19,q8,#3 |
| ldrb r3,[r4,#0] |
| ldrb r8,[r4,r10] |
| @ ubfx r7,r2,#24,#8 @ has the -1 value |
| @ and r2,#0xff @ has the -4 value |
| @ ubfx r8,r3,#24,#8 @ has the 3 value |
| @ and r3,#0xff @ r4 has the 0 value |
| |
| |
| |
| subs r8,r8,r3 |
| vmin.u8 d18,d19,d30 |
| rsbmi r8,r8,#0 |
| vaddl.u8 q3,d25,d24 |
| subs r2,r2,r7 |
| vmax.u8 d3,d18,d31 |
| rsbmi r2,r2,#0 |
| vaddw.u8 q4,q3,d26 |
| add r8,r8,r2 |
| vqadd.u8 d30,d25,d1 |
| cmp r8,r5,asr #3 |
| vqsub.u8 d31,d25,d1 |
| bge l1.1840 |
| vmul.i16 q6,q4,d0[0] |
| subs r7,r3,r7 |
| vqadd.u8 d16,d24,d1 |
| rsbmi r7,r7,#0 |
| vaddl.u8 q5,d23,d27 |
| mov r10,#5 |
| vqsub.u8 d17,d24,d1 |
| mul r10,r10,r6 |
| vadd.i16 q6,q6,q5 |
| add r10,#1 |
| vrshrn.i16 d20,q6,#3 |
| cmp r7,r10,asr #1 |
| vaddw.u8 q7,q4,d23 |
| bge l1.1840 |
| vmin.u8 d18,d20,d30 |
| mov r2,#2 |
| vqadd.u8 d30,d23,d1 |
| ldr r4,[sp,#0x38] @ loading the filter_flag_p |
| vmax.u8 d2,d18,d31 |
| ldr r5,[sp,#0x3c] @ loading the filter_flag_q |
| vrshrn.i16 d21,q7,#2 |
| b end_dep_deq_decision_horz |
| @ r2 has the value of de |
| @ r6 has teh value of tc |
| @ r5 has the value of beta |
| @ r14 has the value of dp |
| @ r12 has the value of dq |
| @ r0 has the value of source address |
| @ r1 has the src stride |
| |
| l1.1840: |
| mov r2,#1 |
| |
| mov r11,r5 |
| ldr r4,[sp,#0x38] @ loading the filter_flag_p |
| ldr r5,[sp,#0x3c] @ loading the filter_flag_q |
| |
| cmp r6,#1 |
| moveq r9,#0 |
| moveq r10,#0 |
| beq end_dep_deq_decision_horz |
| |
| and r7,r4,r5 |
| cmp r7,#1 |
| beq both_flags_set_horz |
| cmp r4,#0 |
| beq set_flag_dep_zero_horz |
| |
| |
| add r8,r11,r11,asr #1 |
| mov r10,#0 |
| asr r8,#3 |
| cmp r8,r14 |
| movgt r9,#1 |
| movle r9,#0 |
| b end_dep_deq_decision_horz |
| set_flag_dep_zero_horz: |
| |
| add r8,r11,r11,asr #1 |
| mov r9,#0 |
| asr r8,#3 |
| cmp r8,r12 |
| movgt r10,#1 |
| movle r10,#0 |
| b end_dep_deq_decision_horz |
| |
| both_flags_set_horz: |
| add r8,r11,r11,asr #1 |
| asr r8,#3 |
| cmp r8,r14 |
| movgt r9,#1 |
| movle r9,#0 |
| cmp r8,r12 |
| movgt r10,#1 |
| movle r10,#0 |
| end_dep_deq_decision_horz: |
| |
| @r0=source address |
| @r1=stride |
| @ r2 =de |
| @ r4=flag p |
| @r5= flag q |
| @r6 =tc |
| @ r9 =dep |
| @ r10=deq |
| |
| |
| |
| @ add r14,r1,r1,lsl #1 |
| @ lsl r7,r6,#1 |
| @ vdup.8 d1,r7 |
| @ vmov.i16 d0,#0x2 |
| vmin.u8 d18,d21,d16 |
| cmp r2,#1 |
| vqsub.u8 d31,d23,d1 |
| beq l1.2408 |
| vaddl.u8 q4,d23,d22 |
| cmp r5,#1 |
| |
| bne strong_filtering_p |
| |
| strong_filtering_q: |
| mov r12,r0 |
| vst1.32 d4[0],[r12],r1 |
| vst1.32 d5[0],[r12],r1 |
| vst1.32 d3[0],[r12] |
| cmp r4,#1 |
| bne l1.2404 |
| strong_filtering_p: |
| vmax.u8 d5,d18,d17 |
| mov r12,r0 |
| vmul.i16 q4,q4,d0[0] |
| rsb r11,r1,#0 |
| vadd.i16 q8,q4,q7 |
| add r12,r12,r11 |
| vrshrn.i16 d19,q8,#3 |
| vst1.32 d2[0],[r12],r11 |
| vmin.u8 d18,d19,d30 |
| vst1.32 d5[0],[r12],r11 |
| vmax.u8 d3,d18,d31 |
| vst1.32 d3[0],[r12] |
| |
| l1.2404: |
| ldmfd sp!, {r3-r12,pc} |
| |
| @ r4=flag p |
| @r5= flag q |
| @r6 =tc |
| @ r9 =dep |
| @ r10=deq |
| |
| |
| @ d22 -4 value |
| |
| @d23 @ -3 value |
| |
| @ vdup.32 d24,r11 @ -2 value |
| |
| @ vdup.32 d25, r11 @-1 value |
| |
| @ vdup.32 d26,r11 @ 0 value |
| |
| @ vdup.32 d27,r11 @ 1value |
| |
| @ vdup.32 d28,r11 @ 2 value |
| |
| @ vdup.32 d29,r11 @ 3 value |
| |
| l1.2408: |
| |
| vmov.i16 d0,#0x9 |
| |
| vsubl.u8 q5,d26,d25 |
| |
| vmul.i16 q5,q5,d0[0] |
| |
| vmov.i16 d0,#0x3 |
| |
| vsubl.u8 q6,d27,d24 |
| vmul.i16 q6,q6,d0[0] |
| |
| |
| vdup.8 d30,r6 @ duplicating the +tc value |
| |
| rsb r12,r6,#0 |
| vdup.8 d31,r12 @ duplicating the -tc value |
| |
| |
| |
| vsub.i16 q5,q5,q6 |
| |
| |
| |
| vrshr.s16 q5,q5,#4 |
| @ delta = ( 9 * (pu1_src[0] - pu1_src[-1]) - 3 * (pu1_src[1] - pu1_src[-2]) + 8 ) >> 4@ |
| |
| vabs.s16 q4,q5 |
| vmovn.i16 d9,q4 |
| @ storing the absolute values of delta in d9 |
| |
| vqmovn.s16 d10,q5 |
| @ storing the clipped values of delta in d16 |
| |
| |
| vmin.s8 d11,d10,d30 |
| vmax.s8 d8,d31,d11 @ d8 has the value delta = clip3(delta, -tc, tc)@ |
| |
| |
| vmovl.u8 q3,d25 |
| |
| vaddw.s8 q2,q3,d8 |
| |
| vqmovun.s16 d12,q2 |
| vmovl.u8 q3,d26 |
| vsubw.s8 q2,q3,d8 |
| vqmovun.s16 d13,q2 |
| |
| |
| mov r11,#0xa |
| mul r12,r11,r6 |
| vdup.8 d2,r12 @ d2 has the 10*tc value |
| vmov d18,d24 |
| vdup.8 d0,r6 |
| vshr.s8 d0,#1 |
| vneg.s8 d1,d0 |
| |
| cmp r4,#1 |
| bne l1.2724 |
| cmp r9,#1 |
| bne l1.2700 |
| |
| @ d12 and d13 have the value temp_p0 and temp_q0 |
| vaddl.u8 q7,d23,d25 |
| vrshrn.u16 d14,q7,#1 |
| vsubl.u8 q7,d14,d24 |
| vaddw.s8 q7,q7,d8 |
| vqshrn.s16 d14,q7,#1 |
| vmin.s8 d15,d14,d0 |
| vmax.s8 d14,d1,d15 |
| |
| @ d14 has the delta p value |
| vmovl.u8 q8,d24 |
| vaddw.s8 q8,q8,d14 |
| vqmovun.s16 d14,q8 |
| |
| @ d14 =tmp_p1 = clip_u8(pu1_src[-2 * src_strd] + delta_p)@ |
| vcge.u8 d18,d9,d2 |
| vbsl d18,d24,d14 |
| |
| l1.2700: |
| mov r12,r0 |
| rsb r11,r1,#0 |
| add r12,r11 |
| vcge.u8 d19,d9,d2 |
| vbsl d19,d25,d12 |
| vst1.32 {d19[0]},[r12],r11 |
| vst1.32 {d18[0]},[r12] |
| l1.2724: |
| cmp r5,#1 |
| bne l1.2404 |
| cmp r10,#1 |
| vmov d18, d27 |
| bne l1.2852 |
| |
| vaddl.u8 q7,d26,d28 |
| vrshrn.u16 d14,q7,#1 |
| vsubl.u8 q7,d14,d27 |
| vsubw.s8 q7,q7,d8 |
| vqshrn.s16 d14,q7,#1 |
| vmin.s8 d15,d14,d0 |
| vmax.s8 d14,d1,d15 |
| @ d14 has the delta p value |
| vmovl.u8 q8,d27 |
| vaddw.s8 q8,q8,d14 |
| vqmovun.s16 d14,q8 |
| vcge.u8 d18,d9,d2 |
| vbsl d18,d27,d14 |
| l1.2852: |
| mov r12,r0 |
| vcge.u8 d19,d9,d2 |
| vbsl d19,d26,d13 |
| vst1.32 {d19[0]},[r12],r1 |
| vst1.32 {d18[0]},[r12] |
| ldmfd sp!, {r3-r12,r15} |
| |
| |
| |
