ref: e1be33b9c8cb20c62b26b9e3f02d206ddf54a80e
dir: /src/arm/32/looprestoration_tmpl.S/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2019, Martin Storsjo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "src/arm/asm.S"
#define FILTER_OUT_STRIDE 384
// void dav1d_sgr_finish_filter1_8bpc_neon(int16_t *tmp,
// const pixel *src, const ptrdiff_t stride,
// const int32_t *a, const int16_t *b,
// const int w, const int h);
function sgr_finish_filter1_8bpc_neon, export=1
push {r4-r11,lr}
vpush {q4-q7}
ldrd r4, r5, [sp, #100]
ldr r6, [sp, #108]
sub r7, r3, #(4*SUM_STRIDE)
add r8, r3, #(4*SUM_STRIDE)
sub r9, r4, #(2*SUM_STRIDE)
add r10, r4, #(2*SUM_STRIDE)
mov r11, #SUM_STRIDE
mov r12, #FILTER_OUT_STRIDE
add lr, r5, #3
bic lr, lr, #3 // Aligned width
sub r2, r2, lr
sub r12, r12, lr
sub r11, r11, lr
sub r11, r11, #4 // We read 4 extra elements from both a and b
mov lr, r5
vmov.i16 q14, #3
vmov.i32 q15, #3
1:
vld1.16 {q0}, [r9, :128]!
vld1.16 {q1}, [r4, :128]!
vld1.16 {q2}, [r10, :128]!
vld1.32 {q8, q9}, [r7, :128]!
vld1.32 {q10, q11}, [r3, :128]!
vld1.32 {q12, q13}, [r8, :128]!
2:
subs r5, r5, #4
vext.8 d6, d0, d1, #2 // -stride
vext.8 d7, d2, d3, #2 // 0
vext.8 d8, d4, d5, #2 // +stride
vext.8 d9, d0, d1, #4 // +1-stride
vext.8 d10, d2, d3, #4 // +1
vext.8 d11, d4, d5, #4 // +1+stride
vadd.i16 d2, d2, d6 // -1, -stride
vadd.i16 d7, d7, d8 // 0, +stride
vadd.i16 d0, d0, d9 // -1-stride, +1-stride
vadd.i16 d2, d2, d7
vadd.i16 d4, d4, d11 // -1+stride, +1+stride
vadd.i16 d2, d2, d10 // +1
vadd.i16 d0, d0, d4
vext.8 q3, q8, q9, #4 // -stride
vshl.i16 d2, d2, #2
vext.8 q4, q8, q9, #8 // +1-stride
vext.8 q5, q10, q11, #4 // 0
vext.8 q6, q10, q11, #8 // +1
vmla.i16 d2, d0, d28 // * 3 -> a
vadd.i32 q3, q3, q10 // -stride, -1
vadd.i32 q8, q8, q4 // -1-stride, +1-stride
vadd.i32 q5, q5, q6 // 0, +1
vadd.i32 q8, q8, q12 // -1+stride
vadd.i32 q3, q3, q5
vext.8 q7, q12, q13, #4 // +stride
vext.8 q10, q12, q13, #8 // +1+stride
vld1.32 {d24[0]}, [r1, :32]! // src
vadd.i32 q3, q3, q7 // +stride
vadd.i32 q8, q8, q10 // +1+stride
vshl.i32 q3, q3, #2
vmla.i32 q3, q8, q15 // * 3 -> b
vmovl.u8 q12, d24 // src
vmov d0, d1
vmlal.u16 q3, d2, d24 // b + a * src
vmov d2, d3
vrshrn.i32 d6, q3, #9
vmov d4, d5
vst1.16 {d6}, [r0]!
ble 3f
vmov q8, q9
vmov q10, q11
vmov q12, q13
vld1.16 {d1}, [r9, :64]!
vld1.16 {d3}, [r4, :64]!
vld1.16 {d5}, [r10, :64]!
vld1.32 {q9}, [r7, :128]!
vld1.32 {q11}, [r3, :128]!
vld1.32 {q13}, [r8, :128]!
b 2b
3:
subs r6, r6, #1
ble 0f
mov r5, lr
add r0, r0, r12, lsl #1
add r1, r1, r2
add r3, r3, r11, lsl #2
add r7, r7, r11, lsl #2
add r8, r8, r11, lsl #2
add r4, r4, r11, lsl #1
add r9, r9, r11, lsl #1
add r10, r10, r11, lsl #1
b 1b
0:
vpop {q4-q7}
pop {r4-r11,pc}
endfunc
// void dav1d_sgr_finish_filter2_8bpc_neon(int16_t *tmp,
// const pixel *src, const ptrdiff_t stride,
// const int32_t *a, const int16_t *b,
// const int w, const int h);
function sgr_finish_filter2_8bpc_neon, export=1
push {r4-r11,lr}
vpush {q4-q7}
ldrd r4, r5, [sp, #100]
ldr r6, [sp, #108]
add r7, r3, #(4*(SUM_STRIDE))
sub r3, r3, #(4*(SUM_STRIDE))
add r8, r4, #(2*(SUM_STRIDE))
sub r4, r4, #(2*(SUM_STRIDE))
mov r9, #(2*SUM_STRIDE)
mov r10, #FILTER_OUT_STRIDE
add r11, r5, #7
bic r11, r11, #7 // Aligned width
sub r2, r2, r11
sub r10, r10, r11
sub r9, r9, r11
sub r9, r9, #4 // We read 4 extra elements from a
sub r12, r9, #4 // We read 8 extra elements from b
mov lr, r5
1:
vld1.16 {q0, q1}, [r4, :128]!
vld1.16 {q2, q3}, [r8, :128]!
vld1.32 {q8, q9}, [r3, :128]!
vld1.32 {q11, q12}, [r7, :128]!
vld1.32 {q10}, [r3, :128]!
vld1.32 {q13}, [r7, :128]!
2:
vmov.i16 q14, #5
vmov.i16 q15, #6
subs r5, r5, #8
vext.8 q4, q0, q1, #4 // +1-stride
vext.8 q5, q2, q3, #4 // +1+stride
vext.8 q6, q0, q1, #2 // -stride
vext.8 q7, q2, q3, #2 // +stride
vadd.i16 q0, q0, q4 // -1-stride, +1-stride
vadd.i16 q5, q2, q5 // -1+stride, +1+stride
vadd.i16 q2, q6, q7 // -stride, +stride
vadd.i16 q0, q0, q5
vext.8 q4, q8, q9, #8 // +1-stride
vext.8 q5, q9, q10, #8
vext.8 q6, q11, q12, #8 // +1+stride
vext.8 q7, q12, q13, #8
vmul.i16 q0, q0, q14 // * 5
vmla.i16 q0, q2, q15 // * 6
vadd.i32 q4, q4, q8 // -1-stride, +1-stride
vadd.i32 q5, q5, q9
vadd.i32 q6, q6, q11 // -1+stride, +1+stride
vadd.i32 q7, q7, q12
vadd.i32 q4, q4, q6
vadd.i32 q5, q5, q7
vext.8 q6, q8, q9, #4 // -stride
vext.8 q7, q9, q10, #4
vext.8 q8, q11, q12, #4 // +stride
vext.8 q11, q12, q13, #4
vld1.8 {d4}, [r1, :64]!
vmov.i32 q14, #5
vmov.i32 q15, #6
vadd.i32 q6, q6, q8 // -stride, +stride
vadd.i32 q7, q7, q11
vmul.i32 q4, q4, q14 // * 5
vmla.i32 q4, q6, q15 // * 6
vmul.i32 q5, q5, q14 // * 5
vmla.i32 q5, q7, q15 // * 6
vmovl.u8 q2, d4
vmlal.u16 q4, d0, d4 // b + a * src
vmlal.u16 q5, d1, d5 // b + a * src
vmov q0, q1
vrshrn.i32 d8, q4, #9
vrshrn.i32 d9, q5, #9
vmov q2, q3
vst1.16 {q4}, [r0, :128]!
ble 3f
vmov q8, q10
vmov q11, q13
vld1.16 {q1}, [r4, :128]!
vld1.16 {q3}, [r8, :128]!
vld1.32 {q9, q10}, [r3, :128]!
vld1.32 {q12, q13}, [r7, :128]!
b 2b
3:
subs r6, r6, #1
ble 0f
mov r5, lr
add r0, r0, r10, lsl #1
add r1, r1, r2
add r3, r3, r9, lsl #2
add r7, r7, r9, lsl #2
add r4, r4, r12, lsl #1
add r8, r8, r12, lsl #1
vld1.32 {q8, q9}, [r3, :128]!
vld1.16 {q0, q1}, [r4, :128]!
vld1.32 {q10}, [r3, :128]!
vmov.i16 q12, #5
vmov.i16 q13, #6
4:
subs r5, r5, #8
vext.8 q3, q0, q1, #4 // +1
vext.8 q2, q0, q1, #2 // 0
vadd.i16 q0, q0, q3 // -1, +1
vext.8 q4, q8, q9, #4 // 0
vext.8 q5, q9, q10, #4
vext.8 q6, q8, q9, #8 // +1
vext.8 q7, q9, q10, #8
vmul.i16 q2, q2, q13 // * 6
vmla.i16 q2, q0, q12 // * 5 -> a
vld1.8 {d22}, [r1, :64]!
vadd.i32 q8, q8, q6 // -1, +1
vadd.i32 q9, q9, q7
vmovl.u8 q11, d22
vmul.i32 q4, q4, q15 // * 6
vmla.i32 q4, q8, q14 // * 5 -> b
vmul.i32 q5, q5, q15 // * 6
vmla.i32 q5, q9, q14 // * 5 -> b
vmlal.u16 q4, d4, d22 // b + a * src
vmlal.u16 q5, d5, d23
vmov q0, q1
vrshrn.i32 d8, q4, #8
vrshrn.i32 d9, q5, #8
vmov q8, q10
vst1.16 {q4}, [r0, :128]!
ble 5f
vld1.16 {q1}, [r4, :128]!
vld1.32 {q9, q10}, [r3, :128]!
b 4b
5:
subs r6, r6, #1
ble 0f
mov r5, lr
sub r3, r3, r11, lsl #2 // Rewind r3/r4 to where they started
sub r4, r4, r11, lsl #1
add r0, r0, r10, lsl #1
add r1, r1, r2
sub r3, r3, #16
sub r4, r4, #16
b 1b
0:
vpop {q4-q7}
pop {r4-r11,pc}
endfunc
// void dav1d_sgr_weighted1_8bpc_neon(pixel *dst, const ptrdiff_t dst_stride,
// const pixel *src, const ptrdiff_t src_stride,
// const int16_t *t1, const int w, const int h,
// const int wt);
function sgr_weighted1_8bpc_neon, export=1
push {r4-r9,lr}
ldrd r4, r5, [sp, #28]
ldrd r6, r7, [sp, #36]
vdup.16 d31, r7
cmp r6, #2
add r9, r0, r1
add r12, r2, r3
add lr, r4, #2*FILTER_OUT_STRIDE
mov r7, #(4*FILTER_OUT_STRIDE)
lsl r1, r1, #1
lsl r3, r3, #1
add r8, r5, #7
bic r8, r8, #7 // Aligned width
sub r1, r1, r8
sub r3, r3, r8
sub r7, r7, r8, lsl #1
mov r8, r5
blt 2f
1:
vld1.8 {d0}, [r2, :64]!
vld1.8 {d16}, [r12, :64]!
vld1.16 {q1}, [r4, :128]!
vld1.16 {q9}, [lr, :128]!
subs r5, r5, #8
vshll.u8 q0, d0, #4 // u
vshll.u8 q8, d16, #4 // u
vsub.i16 q1, q1, q0 // t1 - u
vsub.i16 q9, q9, q8 // t1 - u
vshll.u16 q2, d0, #7 // u << 7
vshll.u16 q3, d1, #7 // u << 7
vshll.u16 q10, d16, #7 // u << 7
vshll.u16 q11, d17, #7 // u << 7
vmlal.s16 q2, d2, d31 // v
vmlal.s16 q3, d3, d31 // v
vmlal.s16 q10, d18, d31 // v
vmlal.s16 q11, d19, d31 // v
vrshrn.i32 d4, q2, #11
vrshrn.i32 d5, q3, #11
vrshrn.i32 d20, q10, #11
vrshrn.i32 d21, q11, #11
vqmovun.s16 d4, q2
vqmovun.s16 d20, q10
vst1.8 {d4}, [r0]!
vst1.8 {d20}, [r9]!
bgt 1b
sub r6, r6, #2
cmp r6, #1
blt 0f
mov r5, r8
add r0, r0, r1
add r9, r9, r1
add r2, r2, r3
add r12, r12, r3
add r4, r4, r7
add lr, lr, r7
beq 2f
b 1b
2:
vld1.8 {d0}, [r2, :64]!
vld1.16 {q1}, [r4, :128]!
subs r5, r5, #8
vshll.u8 q0, d0, #4 // u
vsub.i16 q1, q1, q0 // t1 - u
vshll.u16 q2, d0, #7 // u << 7
vshll.u16 q3, d1, #7 // u << 7
vmlal.s16 q2, d2, d31 // v
vmlal.s16 q3, d3, d31 // v
vrshrn.i32 d4, q2, #11
vrshrn.i32 d5, q3, #11
vqmovun.s16 d2, q2
vst1.8 {d2}, [r0]!
bgt 2b
0:
pop {r4-r9,pc}
endfunc
// void dav1d_sgr_weighted2_8bpc_neon(pixel *dst, const ptrdiff_t stride,
// const pixel *src, const ptrdiff_t src_stride,
// const int16_t *t1, const int16_t *t2,
// const int w, const int h,
// const int16_t wt[2]);
function sgr_weighted2_8bpc_neon, export=1
push {r4-r11,lr}
ldrd r4, r5, [sp, #36]
ldrd r6, r7, [sp, #44]
ldr r8, [sp, #52]
cmp r7, #2
add r10, r0, r1
add r11, r2, r3
add r12, r4, #2*FILTER_OUT_STRIDE
add lr, r5, #2*FILTER_OUT_STRIDE
vld2.16 {d30[], d31[]}, [r8] // wt[0], wt[1]
mov r8, #4*FILTER_OUT_STRIDE
lsl r1, r1, #1
lsl r3, r3, #1
add r9, r6, #7
bic r9, r9, #7 // Aligned width
sub r1, r1, r9
sub r3, r3, r9
sub r8, r8, r9, lsl #1
mov r9, r6
blt 2f
1:
vld1.8 {d0}, [r2, :64]!
vld1.8 {d16}, [r11, :64]!
vld1.16 {q1}, [r4, :128]!
vld1.16 {q9}, [r12, :128]!
vld1.16 {q2}, [r5, :128]!
vld1.16 {q10}, [lr, :128]!
subs r6, r6, #8
vshll.u8 q0, d0, #4 // u
vshll.u8 q8, d16, #4 // u
vsub.i16 q1, q1, q0 // t1 - u
vsub.i16 q2, q2, q0 // t2 - u
vsub.i16 q9, q9, q8 // t1 - u
vsub.i16 q10, q10, q8 // t2 - u
vshll.u16 q3, d0, #7 // u << 7
vshll.u16 q0, d1, #7 // u << 7
vshll.u16 q11, d16, #7 // u << 7
vshll.u16 q8, d17, #7 // u << 7
vmlal.s16 q3, d2, d30 // wt[0] * (t1 - u)
vmlal.s16 q3, d4, d31 // wt[1] * (t2 - u)
vmlal.s16 q0, d3, d30 // wt[0] * (t1 - u)
vmlal.s16 q0, d5, d31 // wt[1] * (t2 - u)
vmlal.s16 q11, d18, d30 // wt[0] * (t1 - u)
vmlal.s16 q11, d20, d31 // wt[1] * (t2 - u)
vmlal.s16 q8, d19, d30 // wt[0] * (t1 - u)
vmlal.s16 q8, d21, d31 // wt[1] * (t2 - u)
vrshrn.i32 d6, q3, #11
vrshrn.i32 d7, q0, #11
vrshrn.i32 d22, q11, #11
vrshrn.i32 d23, q8, #11
vqmovun.s16 d6, q3
vqmovun.s16 d22, q11
vst1.8 {d6}, [r0]!
vst1.8 {d22}, [r10]!
bgt 1b
subs r7, r7, #2
cmp r7, #1
blt 0f
mov r6, r9
add r0, r0, r1
add r10, r10, r1
add r2, r2, r3
add r11, r11, r3
add r4, r4, r8
add r12, r12, r8
add r5, r5, r8
add lr, lr, r8
beq 2f
b 1b
2:
vld1.8 {d0}, [r2, :64]!
vld1.16 {q1}, [r4, :128]!
vld1.16 {q2}, [r5, :128]!
subs r6, r6, #8
vshll.u8 q0, d0, #4 // u
vsub.i16 q1, q1, q0 // t1 - u
vsub.i16 q2, q2, q0 // t2 - u
vshll.u16 q3, d0, #7 // u << 7
vshll.u16 q0, d1, #7 // u << 7
vmlal.s16 q3, d2, d30 // wt[0] * (t1 - u)
vmlal.s16 q3, d4, d31 // wt[1] * (t2 - u)
vmlal.s16 q0, d3, d30 // wt[0] * (t1 - u)
vmlal.s16 q0, d5, d31 // wt[1] * (t2 - u)
vrshrn.i32 d6, q3, #11
vrshrn.i32 d7, q0, #11
vqmovun.s16 d6, q3
vst1.8 {d6}, [r0]!
bgt 1b
0:
pop {r4-r11,pc}
endfunc