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avfilter/vf_bwdif: Add neon for filter_edge

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Adds clip and spatial macros for aarch64 neon
Exports C filter_edge needed for tail fixup of neon code
Adds neon for filter_edge

Signed-off-by: John Cox <jc@kynesim.co.uk>
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
John Cox 2023-07-04 14:04:42 +00:00 committed by Martin Storsjö
parent 7ed7c00f55
commit 8130df83e0
4 changed files with 205 additions and 4 deletions
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20
libavfilter/aarch64/vf_bwdif_init_aarch64.c
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@ -24,10 +24,29 @@
#include "libavfilter/bwdif.h"
#include "libavutil/aarch64/cpu.h"
void ff_bwdif_filter_edge_neon(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat);
void ff_bwdif_filter_intra_neon(void *dst1, void *cur1, int w, int prefs, int mrefs,
int prefs3, int mrefs3, int parity, int clip_max);
static void filter_edge_helper(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat)
{
const int w0 = clip_max != 255 ? 0 : w & ~15;
ff_bwdif_filter_edge_neon(dst1, prev1, cur1, next1, w0, prefs, mrefs, prefs2, mrefs2,
parity, clip_max, spat);
if (w0 < w)
ff_bwdif_filter_edge_c((char *)dst1 + w0, (char *)prev1 + w0, (char *)cur1 + w0, (char *)next1 + w0,
w - w0, prefs, mrefs, prefs2, mrefs2,
parity, clip_max, spat);
}
static void filter_intra_helper(void *dst1, void *cur1, int w, int prefs, int mrefs,
int prefs3, int mrefs3, int parity, int clip_max)
{
@ -52,5 +71,6 @@ ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
return;
s->filter_intra = filter_intra_helper;
s->filter_edge = filter_edge_helper;
}

177
libavfilter/aarch64/vf_bwdif_neon.S
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@ -66,6 +66,79 @@
umlsl2 \a3\().4s, \s1\().8h, \k
.endm
// int b = m2s1 - m1;
// int f = p2s1 - p1;
// int dc = c0s1 - m1;
// int de = c0s1 - p1;
// int sp_max = FFMIN(p1 - c0s1, m1 - c0s1);
// sp_max = FFMIN(sp_max, FFMAX(-b,-f));
// int sp_min = FFMIN(c0s1 - p1, c0s1 - m1);
// sp_min = FFMIN(sp_min, FFMAX(b,f));
// diff = diff == 0 ? 0 : FFMAX3(diff, sp_min, sp_max);
.macro SPAT_CHECK diff, m2s1, m1, c0s1, p1, p2s1, t0, t1, t2, t3
uqsub \t0\().16b, \p1\().16b, \c0s1\().16b
uqsub \t2\().16b, \m1\().16b, \c0s1\().16b
umin \t2\().16b, \t0\().16b, \t2\().16b
uqsub \t1\().16b, \m1\().16b, \m2s1\().16b
uqsub \t3\().16b, \p1\().16b, \p2s1\().16b
umax \t3\().16b, \t3\().16b, \t1\().16b
umin \t3\().16b, \t3\().16b, \t2\().16b
uqsub \t0\().16b, \c0s1\().16b, \p1\().16b
uqsub \t2\().16b, \c0s1\().16b, \m1\().16b
umin \t2\().16b, \t0\().16b, \t2\().16b
uqsub \t1\().16b, \m2s1\().16b, \m1\().16b
uqsub \t0\().16b, \p2s1\().16b, \p1\().16b
umax \t0\().16b, \t0\().16b, \t1\().16b
umin \t2\().16b, \t2\().16b, \t0\().16b
cmeq \t1\().16b, \diff\().16b, #0
umax \diff\().16b, \diff\().16b, \t3\().16b
umax \diff\().16b, \diff\().16b, \t2\().16b
bic \diff\().16b, \diff\().16b, \t1\().16b
.endm
// i0 = s0;
// if (i0 > d0 + diff0)
// i0 = d0 + diff0;
// else if (i0 < d0 - diff0)
// i0 = d0 - diff0;
//
// i0 = s0 is safe
.macro DIFF_CLIP i0, s0, d0, diff, t0, t1
uqadd \t0\().16b, \d0\().16b, \diff\().16b
uqsub \t1\().16b, \d0\().16b, \diff\().16b
umin \i0\().16b, \s0\().16b, \t0\().16b
umax \i0\().16b, \i0\().16b, \t1\().16b
.endm
// i0 = FFABS(m1 - p1) > td0 ? i1 : i2;
// DIFF_CLIP
//
// i0 = i1 is safe
.macro INTERPOL i0, i1, i2, m1, d0, p1, td0, diff, t0, t1, t2
uabd \t0\().16b, \m1\().16b, \p1\().16b
cmhi \t0\().16b, \t0\().16b, \td0\().16b
bsl \t0\().16b, \i1\().16b, \i2\().16b
DIFF_CLIP \i0, \t0, \d0, \diff, \t1, \t2
.endm
.macro PUSH_VREGS
stp d8, d9, [sp, #-64]!
stp d10, d11, [sp, #16]
stp d12, d13, [sp, #32]
stp d14, d15, [sp, #48]
.endm
.macro POP_VREGS
ldp d14, d15, [sp, #48]
ldp d12, d13, [sp, #32]
ldp d10, d11, [sp, #16]
ldp d8, d9, [sp], #64
.endm
.macro LDR_COEFFS d, t0
movrel \t0, coeffs, 0
ld1 {\d\().8h}, [\t0]
@ -81,6 +154,110 @@ const coeffs, align=4 // align 4 means align on 2^4 boundry
.hword 5077, 981 // sp[0] = v0.h[6]
endconst
// ============================================================================
//
// void ff_bwdif_filter_edge_neon(
// void *dst1, // x0
// void *prev1, // x1
// void *cur1, // x2
// void *next1, // x3
// int w, // w4
// int prefs, // w5
// int mrefs, // w6
// int prefs2, // w7
// int mrefs2, // [sp, #0]
// int parity, // [sp, #SP_INT]
// int clip_max, // [sp, #SP_INT*2] unused
// int spat); // [sp, #SP_INT*3]
function ff_bwdif_filter_edge_neon, export=1
// Sanity check w
cmp w4, #0
ble 99f
// #define prev2 cur
// const uint8_t * restrict next2 = parity ? prev : next;
ldr w8, [sp, #0] // mrefs2
ldr w17, [sp, #SP_INT] // parity
ldr w16, [sp, #SP_INT*3] // spat
cmp w17, #0
csel x17, x1, x3, ne
// for (x = 0; x < w; x++) {
10:
// int m1 = cur[mrefs];
// int d = (prev2[0] + next2[0]) >> 1;
// int p1 = cur[prefs];
// int temporal_diff0 = FFABS(prev2[0] - next2[0]);
// int temporal_diff1 =(FFABS(prev[mrefs] - m1) + FFABS(prev[prefs] - p1)) >> 1;
// int temporal_diff2 =(FFABS(next[mrefs] - m1) + FFABS(next[prefs] - p1)) >> 1;
// int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2);
ldr q31, [x2]
ldr q21, [x17]
uhadd v16.16b, v31.16b, v21.16b // d0 = v16
uabd v17.16b, v31.16b, v21.16b // td0 = v17
ldr q24, [x2, w6, sxtw] // m1 = v24
ldr q22, [x2, w5, sxtw] // p1 = v22
ldr q0, [x1, w6, sxtw] // prev[mrefs]
ldr q2, [x1, w5, sxtw] // prev[prefs]
ldr q1, [x3, w6, sxtw] // next[mrefs]
ldr q3, [x3, w5, sxtw] // next[prefs]
ushr v29.16b, v17.16b, #1
uabd v31.16b, v0.16b, v24.16b
uabd v30.16b, v2.16b, v22.16b
uhadd v0.16b, v31.16b, v30.16b // td1 = q0
uabd v31.16b, v1.16b, v24.16b
uabd v30.16b, v3.16b, v22.16b
uhadd v1.16b, v31.16b, v30.16b // td2 = q1
umax v0.16b, v0.16b, v29.16b
umax v0.16b, v0.16b, v1.16b // diff = v0
// if (spat) {
// SPAT_CHECK()
// }
// i0 = (m1 + p1) >> 1;
cbz w16, 1f
ldr q31, [x2, w8, sxtw]
ldr q18, [x17, w8, sxtw]
ldr q30, [x2, w7, sxtw]
ldr q19, [x17, w7, sxtw]
uhadd v18.16b, v18.16b, v31.16b
uhadd v19.16b, v19.16b, v30.16b
SPAT_CHECK v0, v18, v24, v16, v22, v19, v31, v30, v29, v28
1:
uhadd v2.16b, v22.16b, v24.16b
// i0 = v2, s0 = v2, d0 = v16, diff = v0, t0 = v31, t1 = v30
DIFF_CLIP v2, v2, v16, v0, v31, v30
// dst[0] = av_clip(interpol, 0, clip_max);
str q2, [x0], #16
// dst++;
// cur++;
// }
subs w4, w4, #16
add x1, x1, #16
add x2, x2, #16
add x3, x3, #16
add x17, x17, #16
bgt 10b
99:
ret
endfunc
// ============================================================================
//
// void ff_bwdif_filter_intra_neon(

4
libavfilter/bwdif.h
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@ -41,6 +41,10 @@ void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int bit_depth);
void ff_bwdif_init_x86(BWDIFContext *bwdif, int bit_depth);
void ff_bwdif_init_aarch64(BWDIFContext *bwdif, int bit_depth);
void ff_bwdif_filter_edge_c(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat);
void ff_bwdif_filter_intra_c(void *dst1, void *cur1, int w, int prefs, int mrefs,
int prefs3, int mrefs3, int parity, int clip_max);

4
libavfilter/vf_bwdif.c
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@ -150,7 +150,7 @@ static void filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
FILTER2()
}
static void filter_edge(void *dst1, void *prev1, void *cur1, void *next1,
void ff_bwdif_filter_edge_c(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat)
{
@ -364,7 +364,7 @@ av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int bit_depth)
} else {
s->filter_intra = ff_bwdif_filter_intra_c;
s->filter_line = filter_line_c;
s->filter_edge = filter_edge;
s->filter_edge = ff_bwdif_filter_edge_c;
}
#if ARCH_X86