mirror of
https://github.com/FFmpeg/FFmpeg.git
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3b2fd96048
Signed-off-by: Meng Wang <wangmeng.kids@bytedance.com> Reviewed-by: Shengbin Meng <shengbinmeng@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
182 lines
6.7 KiB
ArmAsm
182 lines
6.7 KiB
ArmAsm
/*
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* Copyright (c) 2017 Meng Wang <wangmeng.kids@bytedance.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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#include "neon.S"
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function ff_hevc_sao_band_filter_neon_8, export=1
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push {r4-r10}
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ldr r5, [sp, #28] // width
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ldr r4, [sp, #32] // height
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ldr r8, [sp, #36] // offset_table
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vpush {d8-d15}
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mov r12, r4 // r12 = height
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mov r6, r0 // r6 = r0 = dst
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mov r7, r1 // r7 = r1 = src
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vldm r8, {q0-q3}
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vmov.u16 q15, #1
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vmov.u8 q14, #32
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0: pld [r1]
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vld1.8 {d16}, [r1], r3
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cmp r5, #4
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beq 4f
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8: subs r4, #1
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vshr.u8 d17, d16, #3 // index = [src>>3]
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vshll.u8 q9, d17, #1 // lowIndex = 2*index
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vadd.u16 q11, q9, q15 // highIndex = (2*index+1) << 8
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vshl.u16 q10, q11, #8 // q10: highIndex; q9: lowIndex;
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vadd.u16 q10, q9 // combine high and low index;
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// Look-up Table Round 1; index range: 0-15
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vtbx.8 d24, {q0-q1}, d20
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vtbx.8 d25, {q0-q1}, d21
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// Look-up Table Round 2; index range: 16-31
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vsub.u8 q10, q14 // Look-up with 8bit
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vtbx.8 d24, {q2-q3}, d20
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vtbx.8 d25, {q2-q3}, d21
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vaddw.u8 q13, q12, d16
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vqmovun.s16 d8, q13
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vst1.8 d8, [r0], r2
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vld1.8 {d16}, [r1], r3
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bne 8b
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subs r5, #8
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beq 99f
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mov r4, r12
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add r6, #8
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mov r0, r6
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add r7, #8
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mov r1, r7
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b 0b
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4: subs r4, #1
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vshr.u8 d17, d16, #3 // src>>3
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vshll.u8 q9, d17, #1 // lowIndex = 2*index
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vadd.u16 q11, q9, q15 // highIndex = (2*index+1) << 8
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vshl.u16 q10, q11, #8 // q10: highIndex; q9: lowIndex;
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vadd.u16 q10, q9 // combine high and low index;
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// Look-up Table Round 1; index range: 0-15
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vtbx.8 d24, {q0-q1}, d20
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vtbx.8 d25, {q0-q1}, d21
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// Look-up Table Round 2; index range: 16-32
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vsub.u8 q10, q14 // Look-up with 8bit
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vtbx.8 d24, {q2-q3}, d20
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vtbx.8 d25, {q2-q3}, d21
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vaddw.u8 q13, q12, d16
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vqmovun.s16 d14, q13
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vst1.32 d14[0], [r0], r2
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vld1.32 {d16[0]}, [r1], r3
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bne 4b
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b 99f
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99:
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vpop {d8-d15}
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pop {r4-r10}
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bx lr
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endfunc
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function ff_hevc_sao_edge_filter_neon_8, export=1
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push {r4-r11}
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ldr r5, [sp, #32] // width
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ldr r4, [sp, #36] // height
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ldr r8, [sp, #40] // a_stride
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ldr r9, [sp, #44] // b_stride
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ldr r10, [sp, #48] // sao_offset_val
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ldr r11, [sp, #52] // edge_idx
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vpush {d8-d15}
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mov r12, r4 // r12 = height
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mov r6, r0 // r6 = r0 = dst
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mov r7, r1 // r7 = r1 = src
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vld1.8 {d0}, [r11] // edge_idx tabel load in d0 5x8bit
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vld1.16 {q1}, [r10] // sao_offset_val table load in q1, 5x16bit
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vmov.u8 d1, #2
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vmov.u16 q2, #1
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0: mov r10, r1
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add r10, r8 // src[x + a_stride]
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mov r11, r1
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add r11, r9 // src[x + b_stride]
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pld [r1]
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vld1.8 {d16}, [r1], r3 // src[x] 8x8bit
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vld1.8 {d17}, [r10], r3 // src[x + a_stride]
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vld1.8 {d18}, [r11], r3 // src[x + b_stride]
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cmp r5, #4
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beq 4f
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8: subs r4, #1
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vcgt.u8 d8, d16, d17
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vshr.u8 d9, d8, #7
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vclt.u8 d8, d16, d17
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vadd.u8 d8, d9 // diff0
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vcgt.u8 d10, d16, d18
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vshr.u8 d11, d10, #7
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vclt.u8 d10, d16, d18
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vadd.u8 d10, d11 // diff1
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vadd.s8 d8, d10
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vadd.s8 d8, d1
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vtbx.8 d9, {d0}, d8 // offset_val
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vshll.u8 q6, d9, #1 // lowIndex
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vadd.u16 q7, q6, q2
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vshl.u16 q10, q7, #8 // highIndex
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vadd.u16 q10, q6 // combine lowIndex and highIndex, offset_val
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vtbx.8 d22, {q1}, d20
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vtbx.8 d23, {q1}, d21
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vaddw.u8 q12, q11, d16
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vqmovun.s16 d26, q12
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vst1.8 d26, [r0], r2
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vld1.8 {d16}, [r1], r3 // src[x] 8x8bit
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vld1.8 {d17}, [r10], r3 // src[x + a_stride]
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vld1.8 {d18}, [r11], r3 // src[x + b_stride]
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bne 8b
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subs r5, #8
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beq 99f
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mov r4, r12
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add r6, #8
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mov r0, r6
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add r7, #8
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mov r1, r7
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b 0b
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4: subs r4, #1
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vcgt.u8 d8, d16, d17
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vshr.u8 d9, d8, #7
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vclt.u8 d8, d16, d17
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vadd.u8 d8, d9 // diff0
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vcgt.u8 d10, d16, d18
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vshr.u8 d11, d10, #7
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vclt.u8 d10, d16, d18
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vadd.u8 d10, d11 // diff1
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vadd.s8 d8, d10
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vadd.s8 d8, d1
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vtbx.8 d9, {d0}, d8 // offset_val
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vshll.u8 q6, d9, #1 // lowIndex
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vadd.u16 q7, q6, q2
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vshl.u16 q10, q7, #8 // highIndex
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vadd.u16 q10, q6 // combine lowIndex and highIndex, offset_val
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vtbx.8 d22, {q1}, d20
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vtbx.8 d23, {q1}, d21
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vaddw.u8 q12, q11, d16
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vqmovun.s16 d26, q12
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vst1.32 d26[0], [r0], r2
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vld1.32 {d16[0]}, [r1], r3
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vld1.32 {d17[0]}, [r10], r3 // src[x + a_stride]
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vld1.32 {d18[0]}, [r11], r3 // src[x + b_stride]
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bne 4b
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b 99f
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99:
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vpop {d8-d15}
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pop {r4-r11}
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bx lr
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endfunc
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