* [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions
@ 2023-07-02 12:32 John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 01/15] avfilter/vf_bwdif: Add outline for aarch " John Cox
` (15 more replies)
0 siblings, 16 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Also adds a filter_line3 method which on aarch64 neon yields approx 30%
speedup over 2xfilter_line and a memcpy
Differences from v1:
.align 16 corrected to .balign 16
SXTW tolower
Mac ABI (hopefully) fixed
V register pop/push macroed & prettified
John Cox (15):
avfilter/vf_bwdif: Add outline for aarch neon functions
avfilter/vf_bwdif: Add common macros and consts for aarch64 neon
avfilter/vf_bwdif: Export C filter_intra
avfilter/vf_bwdif: Add neon for filter_intra
tests/checkasm: Add test for vf_bwdif filter_intra
avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
avfilter/vf_bwdif: Export C filter_edge
avfilter/vf_bwdif: Add neon for filter_edge
tests/checkasm: Add test for vf_bwdif filter_edge
avfilter/vf_bwdif: Export C filter_line
avfilter/vf_bwdif: Add neon for filter_line
avfilter/vf_bwdif: Add a filter_line3 method for optimisation
avfilter/vf_bwdif: Add neon for filter_line3
tests/checkasm: Add test for vf_bwdif filter_line3
avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines
libavfilter/aarch64/Makefile | 2 +
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 125 ++++
libavfilter/aarch64/vf_bwdif_neon.S | 788 ++++++++++++++++++++
libavfilter/bwdif.h | 20 +
libavfilter/vf_bwdif.c | 70 +-
tests/checkasm/vf_bwdif.c | 172 +++++
6 files changed, 1162 insertions(+), 15 deletions(-)
create mode 100644 libavfilter/aarch64/vf_bwdif_init_aarch64.c
create mode 100644 libavfilter/aarch64/vf_bwdif_neon.S
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 01/15] avfilter/vf_bwdif: Add outline for aarch neon functions
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon John Cox
` (14 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Outline but no actual functions.
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/Makefile | 2 ++
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 39 +++++++++++++++++++++
libavfilter/aarch64/vf_bwdif_neon.S | 25 +++++++++++++
libavfilter/bwdif.h | 1 +
libavfilter/vf_bwdif.c | 2 ++
5 files changed, 69 insertions(+)
create mode 100644 libavfilter/aarch64/vf_bwdif_init_aarch64.c
create mode 100644 libavfilter/aarch64/vf_bwdif_neon.S
diff --git a/libavfilter/aarch64/Makefile b/libavfilter/aarch64/Makefile
index b58daa3a3f..b68209bc94 100644
--- a/libavfilter/aarch64/Makefile
+++ b/libavfilter/aarch64/Makefile
@@ -1,3 +1,5 @@
+OBJS-$(CONFIG_BWDIF_FILTER) += aarch64/vf_bwdif_init_aarch64.o
OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_init.o
+NEON-OBJS-$(CONFIG_BWDIF_FILTER) += aarch64/vf_bwdif_neon.o
NEON-OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_neon.o
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
new file mode 100644
index 0000000000..86d53b2ca1
--- /dev/null
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -0,0 +1,39 @@
+/*
+ * bwdif aarch64 NEON optimisations
+ *
+ * Copyright (c) 2023 John Cox <jc@kynesim.co.uk>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/common.h"
+#include "libavfilter/bwdif.h"
+#include "libavutil/aarch64/cpu.h"
+
+void
+ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
+{
+ const int cpu_flags = av_get_cpu_flags();
+
+ if (bit_depth != 8)
+ return;
+
+ if (!have_neon(cpu_flags))
+ return;
+
+}
+
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
new file mode 100644
index 0000000000..639ab22998
--- /dev/null
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -0,0 +1,25 @@
+/*
+ * bwdif aarch64 NEON optimisations
+ *
+ * Copyright (c) 2023 John Cox <jc@kynesim.co.uk>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#include "libavutil/aarch64/asm.S"
+
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index 5749345f78..6a0f70487a 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -39,5 +39,6 @@ typedef struct BWDIFContext {
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);
#endif /* AVFILTER_BWDIF_H */
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index e278cf1217..39a51429ac 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -369,6 +369,8 @@ av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int bit_depth)
#if ARCH_X86
ff_bwdif_init_x86(s, bit_depth);
+#elif ARCH_AARCH64
+ ff_bwdif_init_aarch64(s, bit_depth);
#endif
}
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 01/15] avfilter/vf_bwdif: Add outline for aarch " John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 21:04 ` Martin Storsjö
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 03/15] avfilter/vf_bwdif: Export C filter_intra John Cox
` (13 subsequent siblings)
15 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Add macros for dual scalar half->single multiply and accumulate
Add macro for shift, saturate and shorten single to byte
Add filter constants
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_neon.S | 53 +++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index 639ab22998..c2f5eb1f73 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -23,3 +23,56 @@
#include "libavutil/aarch64/asm.S"
+// Space taken on the stack by an int (32-bit)
+#ifdef __APPLE__
+.set SP_INT, 4
+#else
+.set SP_INT, 8
+#endif
+
+.macro SQSHRUNN b, s0, s1, s2, s3, n
+ sqshrun \s0\().4h, \s0\().4s, #\n - 8
+ sqshrun2 \s0\().8h, \s1\().4s, #\n - 8
+ sqshrun \s1\().4h, \s2\().4s, #\n - 8
+ sqshrun2 \s1\().8h, \s3\().4s, #\n - 8
+ uzp2 \b\().16b, \s0\().16b, \s1\().16b
+.endm
+
+.macro SMULL4K a0, a1, a2, a3, s0, s1, k
+ smull \a0\().4s, \s0\().4h, \k
+ smull2 \a1\().4s, \s0\().8h, \k
+ smull \a2\().4s, \s1\().4h, \k
+ smull2 \a3\().4s, \s1\().8h, \k
+.endm
+
+.macro UMULL4K a0, a1, a2, a3, s0, s1, k
+ umull \a0\().4s, \s0\().4h, \k
+ umull2 \a1\().4s, \s0\().8h, \k
+ umull \a2\().4s, \s1\().4h, \k
+ umull2 \a3\().4s, \s1\().8h, \k
+.endm
+
+.macro UMLAL4K a0, a1, a2, a3, s0, s1, k
+ umlal \a0\().4s, \s0\().4h, \k
+ umlal2 \a1\().4s, \s0\().8h, \k
+ umlal \a2\().4s, \s1\().4h, \k
+ umlal2 \a3\().4s, \s1\().8h, \k
+.endm
+
+.macro UMLSL4K a0, a1, a2, a3, s0, s1, k
+ umlsl \a0\().4s, \s0\().4h, \k
+ umlsl2 \a1\().4s, \s0\().8h, \k
+ umlsl \a2\().4s, \s1\().4h, \k
+ umlsl2 \a3\().4s, \s1\().8h, \k
+.endm
+
+// static const uint16_t coef_lf[2] = { 4309, 213 };
+// static const uint16_t coef_hf[3] = { 5570, 3801, 1016 };
+// static const uint16_t coef_sp[2] = { 5077, 981 };
+
+ .balign 16
+coeffs:
+ .hword 4309 * 4, 213 * 4 // lf[0]*4 = v0.h[0]
+ .hword 5570, 3801, 1016, -3801 // hf[0] = v0.h[2], -hf[1] = v0.h[5]
+ .hword 5077, 981 // sp[0] = v0.h[6]
+
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 03/15] avfilter/vf_bwdif: Export C filter_intra
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 01/15] avfilter/vf_bwdif: Add outline for aarch " John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 04/15] avfilter/vf_bwdif: Add neon for filter_intra John Cox
` (12 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Needed for tail fixup of neon code
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/bwdif.h | 3 +++
libavfilter/vf_bwdif.c | 6 +++---
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index 6a0f70487a..ae6f6ce223 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -41,4 +41,7 @@ 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_intra_c(void *dst1, void *cur1, int w, int prefs, int mrefs,
+ int prefs3, int mrefs3, int parity, int clip_max);
+
#endif /* AVFILTER_BWDIF_H */
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index 39a51429ac..035fc58670 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -122,8 +122,8 @@ typedef struct ThreadData {
next2++; \
}
-static void filter_intra(void *dst1, void *cur1, int w, int prefs, int mrefs,
- int prefs3, int mrefs3, int parity, int clip_max)
+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)
{
uint8_t *dst = dst1;
uint8_t *cur = cur1;
@@ -362,7 +362,7 @@ av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int bit_depth)
s->filter_line = filter_line_c_16bit;
s->filter_edge = filter_edge_16bit;
} else {
- s->filter_intra = filter_intra;
+ s->filter_intra = ff_bwdif_filter_intra_c;
s->filter_line = filter_line_c;
s->filter_edge = filter_edge;
}
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 04/15] avfilter/vf_bwdif: Add neon for filter_intra
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (2 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 03/15] avfilter/vf_bwdif: Export C filter_intra John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra John Cox
` (11 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 17 +++++++
libavfilter/aarch64/vf_bwdif_neon.S | 53 +++++++++++++++++++++
2 files changed, 70 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
index 86d53b2ca1..3ffaa07ab3 100644
--- a/libavfilter/aarch64/vf_bwdif_init_aarch64.c
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -24,6 +24,22 @@
#include "libavfilter/bwdif.h"
#include "libavutil/aarch64/cpu.h"
+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_intra_helper(void *dst1, void *cur1, int w, int prefs, int mrefs,
+ int prefs3, int mrefs3, int parity, int clip_max)
+{
+ const int w0 = clip_max != 255 ? 0 : w & ~15;
+
+ ff_bwdif_filter_intra_neon(dst1, cur1, w0, prefs, mrefs, prefs3, mrefs3, parity, clip_max);
+
+ if (w0 < w)
+ ff_bwdif_filter_intra_c((char *)dst1 + w0, (char *)cur1 + w0,
+ w - w0, prefs, mrefs, prefs3, mrefs3, parity, clip_max);
+}
+
void
ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
{
@@ -35,5 +51,6 @@ ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
if (!have_neon(cpu_flags))
return;
+ s->filter_intra = filter_intra_helper;
}
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index c2f5eb1f73..6a614f8d6e 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -76,3 +76,56 @@ coeffs:
.hword 5570, 3801, 1016, -3801 // hf[0] = v0.h[2], -hf[1] = v0.h[5]
.hword 5077, 981 // sp[0] = v0.h[6]
+// ============================================================================
+//
+// void ff_bwdif_filter_intra_neon(
+// void *dst1, // x0
+// void *cur1, // x1
+// int w, // w2
+// int prefs, // w3
+// int mrefs, // w4
+// int prefs3, // w5
+// int mrefs3, // w6
+// int parity, // w7 unused
+// int clip_max) // [sp, #0] unused
+
+function ff_bwdif_filter_intra_neon, export=1
+ cmp w2, #0
+ ble 99f
+
+ ldr q0, coeffs
+
+// for (x = 0; x < w; x++) {
+10:
+
+// interpol = (coef_sp[0] * (cur[mrefs] + cur[prefs]) - coef_sp[1] * (cur[mrefs3] + cur[prefs3])) >> 13;
+ ldr q31, [x1, w4, sxtw]
+ ldr q30, [x1, w3, sxtw]
+ ldr q29, [x1, w6, sxtw]
+ ldr q28, [x1, w5, sxtw]
+
+ uaddl v20.8h, v31.8b, v30.8b
+ uaddl2 v21.8h, v31.16b, v30.16b
+
+ UMULL4K v2, v3, v4, v5, v20, v21, v0.h[6]
+
+ uaddl v20.8h, v29.8b, v28.8b
+ uaddl2 v21.8h, v29.16b, v28.16b
+
+ UMLSL4K v2, v3, v4, v5, v20, v21, v0.h[7]
+
+// dst[0] = av_clip(interpol, 0, clip_max);
+ SQSHRUNN v2, v2, v3, v4, v5, 13
+ str q2, [x0], #16
+
+// dst++;
+// cur++;
+// }
+
+ subs w2, w2, #16
+ add x1, x1, #16
+ bgt 10b
+
+99:
+ ret
+endfunc
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (3 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 04/15] avfilter/vf_bwdif: Add neon for filter_intra John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 21:14 ` Martin Storsjö
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon John Cox
` (10 subsequent siblings)
15 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
tests/checkasm/vf_bwdif.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/tests/checkasm/vf_bwdif.c b/tests/checkasm/vf_bwdif.c
index 46224bb575..034bbabb4c 100644
--- a/tests/checkasm/vf_bwdif.c
+++ b/tests/checkasm/vf_bwdif.c
@@ -20,6 +20,7 @@
#include "checkasm.h"
#include "libavcodec/internal.h"
#include "libavfilter/bwdif.h"
+#include "libavutil/mem_internal.h"
#define WIDTH 256
@@ -81,4 +82,40 @@ void checkasm_check_vf_bwdif(void)
BODY(uint16_t, 10);
report("bwdif10");
}
+
+ if (check_func(ctx_8.filter_intra, "bwdif8.intra")) {
+ LOCAL_ALIGNED_16(uint8_t, cur0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, cur1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, dst0, [WIDTH*3]);
+ LOCAL_ALIGNED_16(uint8_t, dst1, [WIDTH*3]);
+ const int stride = WIDTH;
+ const int mask = (1<<8)-1;
+
+ declare_func(void, void *dst1, void *cur1, int w, int prefs, int mrefs,
+ int prefs3, int mrefs3, int parity, int clip_max);
+
+ randomize_buffers( cur0, cur1, mask, 11*WIDTH);
+ memset(dst0, 0xba, WIDTH * 3);
+ memset(dst1, 0xba, WIDTH * 3);
+
+ call_ref(dst0 + stride,
+ cur0 + stride * 4, WIDTH,
+ stride, -stride, stride * 3, -stride * 3,
+ 0, mask);
+ call_new(dst1 + stride,
+ cur0 + stride * 4, WIDTH,
+ stride, -stride, stride * 3, -stride * 3,
+ 0, mask);
+
+ if (memcmp(dst0, dst1, WIDTH*3)
+ || memcmp( cur0, cur1, WIDTH*11))
+ fail();
+
+ bench_new(dst1 + stride,
+ cur0 + stride * 4, WIDTH,
+ stride, -stride, stride * 3, -stride * 3,
+ 0, mask);
+
+ report("bwdif8.intra");
+ }
}
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (4 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 14:02 ` Lynne
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 07/15] avfilter/vf_bwdif: Export C filter_edge John Cox
` (9 subsequent siblings)
15 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_neon.S | 73 +++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index 6a614f8d6e..48dc7bcd9d 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -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
+
// static const uint16_t coef_lf[2] = { 4309, 213 };
// static const uint16_t coef_hf[3] = { 5570, 3801, 1016 };
// static const uint16_t coef_sp[2] = { 5077, 981 };
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 07/15] avfilter/vf_bwdif: Export C filter_edge
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (5 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 08/15] avfilter/vf_bwdif: Add neon for filter_edge John Cox
` (8 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Needed for tail fixup of neon code
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/bwdif.h | 4 ++++
libavfilter/vf_bwdif.c | 8 ++++----
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index ae6f6ce223..ae1616d366 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -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);
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index 035fc58670..bec83111b4 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -150,9 +150,9 @@ 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,
- int w, int prefs, int mrefs, int prefs2, int mrefs2,
- int parity, int clip_max, int spat)
+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)
{
uint8_t *dst = dst1;
uint8_t *prev = prev1;
@@ -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
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 08/15] avfilter/vf_bwdif: Add neon for filter_edge
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (6 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 07/15] avfilter/vf_bwdif: Export C filter_edge John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 09/15] tests/checkasm: Add test for vf_bwdif filter_edge John Cox
` (7 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 20 ++++
libavfilter/aarch64/vf_bwdif_neon.S | 104 ++++++++++++++++++++
2 files changed, 124 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
index 3ffaa07ab3..e75cf2f204 100644
--- a/libavfilter/aarch64/vf_bwdif_init_aarch64.c
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -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;
}
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index 48dc7bcd9d..d6e7d109f5 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -149,6 +149,110 @@ coeffs:
.hword 5570, 3801, 1016, -3801 // hf[0] = v0.h[2], -hf[1] = v0.h[5]
.hword 5077, 981 // sp[0] = v0.h[6]
+// ============================================================================
+//
+// 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(
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 09/15] tests/checkasm: Add test for vf_bwdif filter_edge
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (7 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 08/15] avfilter/vf_bwdif: Add neon for filter_edge John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 10/15] avfilter/vf_bwdif: Export C filter_line John Cox
` (6 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
tests/checkasm/vf_bwdif.c | 54 +++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/tests/checkasm/vf_bwdif.c b/tests/checkasm/vf_bwdif.c
index 034bbabb4c..5fdba09fdc 100644
--- a/tests/checkasm/vf_bwdif.c
+++ b/tests/checkasm/vf_bwdif.c
@@ -83,6 +83,60 @@ void checkasm_check_vf_bwdif(void)
report("bwdif10");
}
+ {
+ LOCAL_ALIGNED_16(uint8_t, prev0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, prev1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, next0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, next1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, cur0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, cur1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, dst0, [WIDTH*3]);
+ LOCAL_ALIGNED_16(uint8_t, dst1, [WIDTH*3]);
+ const int stride = WIDTH;
+ const int mask = (1<<8)-1;
+ int spat;
+ int parity;
+
+ for (spat = 0; spat != 2; ++spat) {
+ for (parity = 0; parity != 2; ++parity) {
+ if (check_func(ctx_8.filter_edge, "bwdif8.edge.s%d.p%d", spat, parity)) {
+
+ declare_func(void, 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);
+
+ randomize_buffers(prev0, prev1, mask, 11*WIDTH);
+ randomize_buffers(next0, next1, mask, 11*WIDTH);
+ randomize_buffers( cur0, cur1, mask, 11*WIDTH);
+ memset(dst0, 0xba, WIDTH * 3);
+ memset(dst1, 0xba, WIDTH * 3);
+
+ call_ref(dst0 + stride,
+ prev0 + stride * 4, cur0 + stride * 4, next0 + stride * 4, WIDTH,
+ stride, -stride, stride * 2, -stride * 2,
+ parity, mask, spat);
+ call_new(dst1 + stride,
+ prev1 + stride * 4, cur1 + stride * 4, next1 + stride * 4, WIDTH,
+ stride, -stride, stride * 2, -stride * 2,
+ parity, mask, spat);
+
+ if (memcmp(dst0, dst1, WIDTH*3)
+ || memcmp(prev0, prev1, WIDTH*11)
+ || memcmp(next0, next1, WIDTH*11)
+ || memcmp( cur0, cur1, WIDTH*11))
+ fail();
+
+ bench_new(dst1 + stride,
+ prev1 + stride * 4, cur1 + stride * 4, next1 + stride * 4, WIDTH,
+ stride, -stride, stride * 2, -stride * 2,
+ parity, mask, spat);
+ }
+ }
+ }
+
+ report("bwdif8.edge");
+ }
+
if (check_func(ctx_8.filter_intra, "bwdif8.intra")) {
LOCAL_ALIGNED_16(uint8_t, cur0, [11*WIDTH]);
LOCAL_ALIGNED_16(uint8_t, cur1, [11*WIDTH]);
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 10/15] avfilter/vf_bwdif: Export C filter_line
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (8 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 09/15] tests/checkasm: Add test for vf_bwdif filter_edge John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 11/15] avfilter/vf_bwdif: Add neon for filter_line John Cox
` (5 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Needed for tail fixup of neon code
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/bwdif.h | 5 +++++
libavfilter/vf_bwdif.c | 10 +++++-----
2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index ae1616d366..cce99953f3 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -48,4 +48,9 @@ void ff_bwdif_filter_edge_c(void *dst1, void *prev1, void *cur1, void *next1,
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);
+void ff_bwdif_filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
+ int w, int prefs, int mrefs, int prefs2, int mrefs2,
+ int prefs3, int mrefs3, int prefs4, int mrefs4,
+ int parity, int clip_max);
+
#endif /* AVFILTER_BWDIF_H */
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index bec83111b4..26349da1fd 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -132,10 +132,10 @@ void ff_bwdif_filter_intra_c(void *dst1, void *cur1, int w, int prefs, int mrefs
FILTER_INTRA()
}
-static void filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
- int w, int prefs, int mrefs, int prefs2, int mrefs2,
- int prefs3, int mrefs3, int prefs4, int mrefs4,
- int parity, int clip_max)
+void ff_bwdif_filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
+ int w, int prefs, int mrefs, int prefs2, int mrefs2,
+ int prefs3, int mrefs3, int prefs4, int mrefs4,
+ int parity, int clip_max)
{
uint8_t *dst = dst1;
uint8_t *prev = prev1;
@@ -363,7 +363,7 @@ av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int bit_depth)
s->filter_edge = filter_edge_16bit;
} else {
s->filter_intra = ff_bwdif_filter_intra_c;
- s->filter_line = filter_line_c;
+ s->filter_line = ff_bwdif_filter_line_c;
s->filter_edge = ff_bwdif_filter_edge_c;
}
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 11/15] avfilter/vf_bwdif: Add neon for filter_line
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (9 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 10/15] avfilter/vf_bwdif: Export C filter_line John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation John Cox
` (4 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 21 ++
libavfilter/aarch64/vf_bwdif_neon.S | 208 ++++++++++++++++++++
2 files changed, 229 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
index e75cf2f204..21e67884ab 100644
--- a/libavfilter/aarch64/vf_bwdif_init_aarch64.c
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -31,6 +31,26 @@ void ff_bwdif_filter_edge_neon(void *dst1, void *prev1, void *cur1, void *next1,
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);
+void ff_bwdif_filter_line_neon(void *dst1, void *prev1, void *cur1, void *next1,
+ int w, int prefs, int mrefs, int prefs2, int mrefs2,
+ int prefs3, int mrefs3, int prefs4, int mrefs4,
+ int parity, int clip_max);
+
+
+static void filter_line_helper(void *dst1, void *prev1, void *cur1, void *next1,
+ int w, int prefs, int mrefs, int prefs2, int mrefs2,
+ int prefs3, int mrefs3, int prefs4, int mrefs4,
+ int parity, int clip_max)
+{
+ const int w0 = clip_max != 255 ? 0 : w & ~15;
+
+ ff_bwdif_filter_line_neon(dst1, prev1, cur1, next1,
+ w0, prefs, mrefs, prefs2, mrefs2, prefs3, mrefs3, prefs4, mrefs4, parity, clip_max);
+
+ if (w0 < w)
+ ff_bwdif_filter_line_c((char *)dst1 + w0, (char *)prev1 + w0, (char *)cur1 + w0, (char *)next1 + w0,
+ w - w0, prefs, mrefs, prefs2, mrefs2, prefs3, mrefs3, prefs4, mrefs4, parity, 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,
@@ -71,6 +91,7 @@ ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
return;
s->filter_intra = filter_intra_helper;
+ s->filter_line = filter_line_helper;
s->filter_edge = filter_edge_helper;
}
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index d6e7d109f5..abc050565c 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -149,6 +149,214 @@ coeffs:
.hword 5570, 3801, 1016, -3801 // hf[0] = v0.h[2], -hf[1] = v0.h[5]
.hword 5077, 981 // sp[0] = v0.h[6]
+// ===========================================================================
+//
+// void filter_line(
+// 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 prefs3, // [sp, #SP_INT]
+// int mrefs3, // [sp, #SP_INT*2]
+// int prefs4, // [sp, #SP_INT*3]
+// int mrefs4, // [sp, #SP_INT*4]
+// int parity, // [sp, #SP_INT*5]
+// int clip_max) // [sp, #SP_INT*6]
+
+function ff_bwdif_filter_line_neon, export=1
+ // Sanity check w
+ cmp w4, #0
+ ble 99f
+
+ // Rearrange regs to be the same as line3 for ease of debug!
+ mov w10, w4 // w10 = loop count
+ mov w9, w6 // w9 = mref
+ mov w12, w7 // w12 = pref2
+ mov w11, w5 // w11 = pref
+ ldr w8, [sp, #0] // w8 = mref2
+ ldr w7, [sp, #SP_INT*2] // w7 = mref3
+ ldr w6, [sp, #SP_INT*4] // w6 = mref4
+ ldr w13, [sp, #SP_INT] // w13 = pref3
+ ldr w14, [sp, #SP_INT*3] // w14 = pref4
+
+ mov x4, x3
+ mov x3, x2
+ mov x2, x1
+
+// #define prev2 cur
+// const uint8_t * restrict next2 = parity ? prev : next;
+ ldr w17, [sp, #SP_INT*5] // parity
+ cmp w17, #0
+ csel x17, x2, x4, ne
+
+ PUSH_VREGS
+
+ ldr q0, coeffs
+
+// for (x = 0; x < w; x++) {
+// int diff0, diff2;
+// int d0, d2;
+// int temporal_diff0, temporal_diff2;
+//
+// int i1, i2;
+// int j1, j2;
+// int p6, p5, p4, p3, p2, p1, c0, m1, m2, m3, m4;
+
+10:
+// c0 = prev2[0] + next2[0]; // c0 = v20, v21
+// d0 = c0 >> 1; // d0 = v10
+// temporal_diff0 = FFABS(prev2[0] - next2[0]); // td0 = v11
+ ldr q31, [x3]
+ ldr q21, [x17]
+ uhadd v10.16b, v31.16b, v21.16b
+ uabd v11.16b, v31.16b, v21.16b
+ uaddl v20.8h, v21.8b, v31.8b
+ uaddl2 v21.8h, v21.16b, v31.16b
+
+ ldr q31, [x3, w6, sxtw]
+ ldr q23, [x17, w6, sxtw]
+
+// i1 = coef_hf[0] * c0; // i1 = v2-v5
+ UMULL4K v2, v3, v4, v5, v20, v21, v0.h[2]
+
+ ldr q30, [x3, w14, sxtw]
+ ldr q25, [x17, w14, sxtw]
+
+// m4 = prev2[mrefs4] + next2[mrefs4]; // m4 = v22,v23
+ uaddl v22.8h, v23.8b, v31.8b
+ uaddl2 v23.8h, v23.16b, v31.16b
+
+// p4 = prev2[prefs4] + next2[prefs4]; // p4 = v24,v25, (p4 >> 1) = v12
+ uhadd v12.16b, v25.16b, v30.16b
+ uaddl v24.8h, v25.8b, v30.8b
+ uaddl2 v25.8h, v25.16b, v30.16b
+
+// m3 = cur[mrefs3]; // m3 = v20
+ ldr q20, [x3, w7, sxtw]
+
+// p3 = cur[prefs3]; // p3 = v21
+ ldr q21, [x3, w13, sxtw]
+
+// i1 += coef_hf[2] * (m4 + p4); // (-m4:v22,v23) (-p4:v24,v25)
+ add v22.8h, v22.8h, v24.8h
+ add v23.8h, v23.8h, v25.8h
+ UMLAL4K v2, v3, v4, v5, v22, v23, v0.h[4]
+
+ ldr q29, [x3, w8, sxtw]
+ ldr q23, [x17, w8, sxtw]
+
+// i1 -= coef_lf[1] * 4 * (m3 + p3); // -
+ uaddl v30.8h, v20.8b, v21.8b
+ uaddl2 v31.8h, v20.16b, v21.16b
+
+ UMLSL4K v2, v3, v4, v5, v30, v31, v0.h[1]
+
+// m2 = prev2[mrefs2] + next2[mrefs2]; // m2 = v22,v23, (m2 >> 1) = v13
+ uhadd v13.16b, v23.16b, v29.16b
+ uaddl v22.8h, v23.8b, v29.8b
+ uaddl2 v23.8h, v23.16b, v29.16b
+
+ ldr q31, [x3, w12, sxtw]
+ ldr q27, [x17, w12, sxtw]
+
+// j1 += coef_hf[2] * (m2 + p6); // (-p6:v24,v25)
+ add v24.8h, v24.8h, v22.8h
+ add v25.8h, v25.8h, v23.8h
+ UMLAL4K v6, v7, v8, v9, v24, v25, v0.h[4]
+
+// m1 = cur[mrefs]; // m1 = v24
+ ldr q24, [x3, w9, sxtw]
+
+// p2 = prev2[prefs2] + next2[prefs2]; // p2 = v26, v27
+// temporal_diff2 = FFABS(prev2[prefs2] - next2[prefs2]); // td2 = v14
+// d2 = p2 >> 1; // d2 = v15
+ uabd v14.16b, v31.16b, v27.16b
+ uhadd v15.16b, v31.16b, v27.16b
+ uaddl v26.8h, v27.8b, v31.8b
+ uaddl2 v27.8h, v27.16b, v31.16b
+
+// i1 -= coef_hf[1] * (m2 + p2); // (-m2:v22,v23*) (-p2:v26*,v27*)
+ add v22.8h, v22.8h, v26.8h
+ add v23.8h, v23.8h, v27.8h
+ UMLSL4K v2, v3, v4, v5, v22, v23, v0.h[3]
+
+// p1 = cur[prefs]; // p1 = v22
+ ldr q22, [x3, w11, sxtw]
+
+// i2 = (coef_sp[0] * (m1 + p1) - coef_sp[1] * (m3 + p3)) >> 13; // (-m3:v20*) i2=v17
+ uaddl v18.8h, v22.8b, v24.8b
+ uaddl2 v19.8h, v22.16b, v24.16b
+ UMULL4K v28, v29, v30, v31, v18, v19, v0.h[6]
+
+ uaddl v18.8h, v20.8b, v21.8b
+ uaddl2 v19.8h, v20.16b, v21.16b
+ UMLSL4K v28, v29, v30, v31, v18, v19, v0.h[7]
+
+ SQSHRUNN v17, v28, v29, v30, v31, 13
+
+// i1 += coef_lf[0] * 4 * (m1 + p1); // p1 = v22, m1 = v24
+ uaddl v26.8h, v24.8b, v22.8b
+ uaddl2 v27.8h, v24.16b, v22.16b
+ UMLAL4K v2, v3, v4, v5, v26, v27, v0.h[0]
+
+ ldr q31, [x2, w9, sxtw]
+ ldr q29, [x4, w9, sxtw]
+
+ ldr q30, [x2, w11, sxtw]
+ ldr q28, [x4, w11, sxtw]
+
+// i1 >>= 15; // i1 = v2, -v3, -v4*, -v5*
+ SQSHRUNN v2, v2, v3, v4, v5, 15
+
+// {
+// int t1 =(FFABS(prev[mrefs] - m1) + FFABS(prev[prefs] - p1)) >> 1;
+// int t2 =(FFABS(next[mrefs] - m1) + FFABS(next[prefs] - p1)) >> 1;
+ uabd v30.16b, v22.16b, v30.16b
+ uabd v31.16b, v24.16b, v31.16b
+ uabd v28.16b, v22.16b, v28.16b
+ uabd v29.16b, v24.16b, v29.16b
+ uhadd v31.16b, v31.16b, v30.16b
+ uhadd v29.16b, v29.16b, v28.16b
+
+// diff0 = FFMAX3(temporal_diff0 >> 1, t1, t2); // diff0=v18
+ ushr v18.16b, v11.16b, #1
+ umax v18.16b, v18.16b, v31.16b
+ umax v18.16b, v18.16b, v29.16b
+
+ // diff0 = v18, (m2 >> 1) = v13, m1 = v24, d0 = v10, p1 = v22, d2 = v15
+ SPAT_CHECK v18, v13, v24, v10, v22, v15, v31, v30, v29, v28
+
+ // i1 = v2, i2 = v17, m1 = v24, d0 = v10, p1 = v22, td2 = v11, diff2 = v18
+ INTERPOL v2, v2, v17, v24, v10, v22, v11, v18, v31, v30, v29
+
+// dst[0] = av_clip_uint8(interpol);
+ str q2, [x0], #16
+// }
+//
+// dst++;
+// cur++;
+// prev++;
+// prev2++;
+// next++;
+// }
+
+ subs w10, w10, #16
+ add x2, x2, #16
+ add x3, x3, #16
+ add x4, x4, #16
+ add x17, x17, #16
+ bgt 10b
+
+ POP_VREGS
+99:
+ ret
+endfunc
+
// ============================================================================
//
// void ff_bwdif_filter_edge_neon(
--
2.39.2
_______________________________________________
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https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (10 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 11/15] avfilter/vf_bwdif: Add neon for filter_line John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 17:26 ` Thomas Mundt
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 13/15] avfilter/vf_bwdif: Add neon for filter_line3 John Cox
` (3 subsequent siblings)
15 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Add an optional filter_line3 to the available optimisations.
filter_line3 is equivalent to filter_line, memcpy, filter_line
filter_line shares quite a number of loads and some calculations in
common with its next iteration and testing shows that using aarch64
neon filter_line3s performance is 30% better than two filter_lines
and a memcpy.
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/bwdif.h | 7 +++++++
libavfilter/vf_bwdif.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+)
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index cce99953f3..496cec72ef 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -35,6 +35,9 @@ typedef struct BWDIFContext {
void (*filter_edge)(void *dst, void *prev, void *cur, void *next,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
int parity, int clip_max, int spat);
+ void (*filter_line3)(void *dst, int dstride,
+ const void *prev, const void *cur, const void *next, int prefs,
+ int w, int parity, int clip_max);
} BWDIFContext;
void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int bit_depth);
@@ -53,4 +56,8 @@ void ff_bwdif_filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
int prefs3, int mrefs3, int prefs4, int mrefs4,
int parity, int clip_max);
+void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int s_stride,
+ int w, int parity, int clip_max);
+
#endif /* AVFILTER_BWDIF_H */
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index 26349da1fd..52bc676cf8 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -150,6 +150,31 @@ void ff_bwdif_filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
FILTER2()
}
+#define NEXT_LINE()\
+ dst += d_stride; \
+ prev += prefs; \
+ cur += prefs; \
+ next += prefs;
+
+void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int s_stride,
+ int w, int parity, int clip_max)
+{
+ const int prefs = s_stride;
+ uint8_t * dst = dst1;
+ const uint8_t * prev = prev1;
+ const uint8_t * cur = cur1;
+ const uint8_t * next = next1;
+
+ ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur, (void*)next, w,
+ prefs, -prefs, prefs * 2, - prefs * 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
+ NEXT_LINE();
+ memcpy(dst, cur, w);
+ NEXT_LINE();
+ ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur, (void*)next, w,
+ prefs, -prefs, prefs * 2, - prefs * 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
+}
+
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)
@@ -244,6 +269,11 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
refs << 1, -(refs << 1),
td->parity ^ td->tff, clip_max,
(y < 2) || ((y + 3) > td->h) ? 0 : 1);
+ } else if (s->filter_line3 && y + 2 < slice_end && y + 6 < td->h) {
+ s->filter_line3(dst, td->frame->linesize[td->plane],
+ prev, cur, next, linesize, td->w,
+ td->parity ^ td->tff, clip_max);
+ y += 2;
} else {
s->filter_line(dst, prev, cur, next, td->w,
refs, -refs, refs << 1, -(refs << 1),
@@ -357,6 +387,7 @@ static int config_props(AVFilterLink *link)
av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int bit_depth)
{
+ s->filter_line3 = 0;
if (bit_depth > 8) {
s->filter_intra = filter_intra_16bit;
s->filter_line = filter_line_c_16bit;
--
2.39.2
_______________________________________________
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ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 13/15] avfilter/vf_bwdif: Add neon for filter_line3
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (11 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 14/15] tests/checkasm: Add test for vf_bwdif filter_line3 John Cox
` (2 subsequent siblings)
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 28 ++
libavfilter/aarch64/vf_bwdif_neon.S | 272 ++++++++++++++++++++
2 files changed, 300 insertions(+)
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
index 21e67884ab..f52bc4b9b4 100644
--- a/libavfilter/aarch64/vf_bwdif_init_aarch64.c
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -36,6 +36,33 @@ void ff_bwdif_filter_line_neon(void *dst1, void *prev1, void *cur1, void *next1,
int prefs3, int mrefs3, int prefs4, int mrefs4,
int parity, int clip_max);
+void ff_bwdif_filter_line3_neon(void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int s_stride,
+ int w, int parity, int clip_max);
+
+
+static void filter_line3_helper(void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int s_stride,
+ int w, int parity, int clip_max)
+{
+ // Asm works on 16 byte chunks
+ // If w is a multiple of 16 then all is good - if not then if width rounded
+ // up to nearest 16 will fit in both src & dst strides then allow the asm
+ // to write over the padding bytes as that is almost certainly faster than
+ // having to invoke the C version to clean up the tail.
+ const int w1 = FFALIGN(w, 16);
+ const int w0 = clip_max != 255 ? 0 :
+ d_stride <= w1 && s_stride <= w1 ? w : w & ~15;
+
+ ff_bwdif_filter_line3_neon(dst1, d_stride,
+ prev1, cur1, next1, s_stride,
+ w0, parity, clip_max);
+
+ if (w0 < w)
+ ff_bwdif_filter_line3_c((char *)dst1 + w0, d_stride,
+ (const char *)prev1 + w0, (const char *)cur1 + w0, (const char *)next1 + w0, s_stride,
+ w - w0, parity, clip_max);
+}
static void filter_line_helper(void *dst1, void *prev1, void *cur1, void *next1,
int w, int prefs, int mrefs, int prefs2, int mrefs2,
@@ -93,5 +120,6 @@ ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
s->filter_intra = filter_intra_helper;
s->filter_line = filter_line_helper;
s->filter_edge = filter_edge_helper;
+ s->filter_line3 = filter_line3_helper;
}
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
index abc050565c..1405ea10fb 100644
--- a/libavfilter/aarch64/vf_bwdif_neon.S
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -149,6 +149,278 @@ coeffs:
.hword 5570, 3801, 1016, -3801 // hf[0] = v0.h[2], -hf[1] = v0.h[5]
.hword 5077, 981 // sp[0] = v0.h[6]
+// ===========================================================================
+//
+// void ff_bwdif_filter_line3_neon(
+// void * dst1, // x0
+// int d_stride, // w1
+// const void * prev1, // x2
+// const void * cur1, // x3
+// const void * next1, // x4
+// int s_stride, // w5
+// int w, // w6
+// int parity, // w7
+// int clip_max); // [sp, #0] (Ignored)
+
+function ff_bwdif_filter_line3_neon, export=1
+ // Sanity check w
+ cmp w6, #0
+ ble 99f
+
+// #define prev2 cur
+// const uint8_t * restrict next2 = parity ? prev : next;
+ cmp w7, #0
+ csel x17, x2, x4, ne
+
+ // We want all the V registers - save all the ones we must
+ PUSH_VREGS
+
+ ldr q0, coeffs
+
+ // Some rearrangement of initial values for nice layout of refs in regs
+ mov w10, w6 // w10 = loop count
+ neg w9, w5 // w9 = mref
+ lsl w8, w9, #1 // w8 = mref2
+ add w7, w9, w9, LSL #1 // w7 = mref3
+ lsl w6, w9, #2 // w6 = mref4
+ mov w11, w5 // w11 = pref
+ lsl w12, w5, #1 // w12 = pref2
+ add w13, w5, w5, LSL #1 // w13 = pref3
+ lsl w14, w5, #2 // w14 = pref4
+ add w15, w5, w5, LSL #2 // w15 = pref5
+ add w16, w14, w12 // w16 = pref6
+
+ lsl w5, w1, #1 // w5 = d_stride * 2
+
+// for (x = 0; x < w; x++) {
+// int diff0, diff2;
+// int d0, d2;
+// int temporal_diff0, temporal_diff2;
+//
+// int i1, i2;
+// int j1, j2;
+// int p6, p5, p4, p3, p2, p1, c0, m1, m2, m3, m4;
+
+10:
+// c0 = prev2[0] + next2[0]; // c0 = v20, v21
+// d0 = c0 >> 1; // d0 = v10
+// temporal_diff0 = FFABS(prev2[0] - next2[0]); // td0 = v11
+ ldr q31, [x3]
+ ldr q21, [x17]
+ uhadd v10.16b, v31.16b, v21.16b
+ uabd v11.16b, v31.16b, v21.16b
+ uaddl v20.8h, v21.8b, v31.8b
+ uaddl2 v21.8h, v21.16b, v31.16b
+
+ ldr q31, [x3, w6, sxtw]
+ ldr q23, [x17, w6, sxtw]
+
+// i1 = coef_hf[0] * c0; // i1 = v2-v5
+ UMULL4K v2, v3, v4, v5, v20, v21, v0.h[2]
+
+ ldr q30, [x3, w14, sxtw]
+ ldr q25, [x17, w14, sxtw]
+
+// m4 = prev2[mrefs4] + next2[mrefs4]; // m4 = v22,v23
+ uaddl v22.8h, v23.8b, v31.8b
+ uaddl2 v23.8h, v23.16b, v31.16b
+
+// p4 = prev2[prefs4] + next2[prefs4]; // p4 = v24,v25, (p4 >> 1) = v12
+ uhadd v12.16b, v25.16b, v30.16b
+ uaddl v24.8h, v25.8b, v30.8b
+ uaddl2 v25.8h, v25.16b, v30.16b
+
+// j1 = -coef_hf[1] * (c0 + p4); // j1 = v6-v9 (-c0:v20,v21)
+ add v20.8h, v20.8h, v24.8h
+ add v21.8h, v21.8h, v25.8h
+ SMULL4K v6, v7, v8, v9, v20, v21, v0.h[5]
+
+// m3 = cur[mrefs3]; // m3 = v20
+ ldr q20, [x3, w7, sxtw]
+
+// p3 = cur[prefs3]; // p3 = v21
+ ldr q21, [x3, w13, sxtw]
+
+// i1 += coef_hf[2] * (m4 + p4); // (-m4:v22,v23) (-p4:v24,v25)
+ add v22.8h, v22.8h, v24.8h
+ add v23.8h, v23.8h, v25.8h
+ UMLAL4K v2, v3, v4, v5, v22, v23, v0.h[4]
+
+ ldr q29, [x3, w8, sxtw]
+ ldr q23, [x17, w8, sxtw]
+
+// i1 -= coef_lf[1] * 4 * (m3 + p3); // -
+ uaddl v30.8h, v20.8b, v21.8b
+ uaddl2 v31.8h, v20.16b, v21.16b
+
+ ldr q28, [x3, w16, sxtw]
+ ldr q25, [x17, w16, sxtw]
+
+ UMLSL4K v2, v3, v4, v5, v30, v31, v0.h[1]
+
+// m2 = prev2[mrefs2] + next2[mrefs2]; // m2 = v22,v23, (m2 >> 1) = v13
+ uhadd v13.16b, v23.16b, v29.16b
+ uaddl v22.8h, v23.8b, v29.8b
+ uaddl2 v23.8h, v23.16b, v29.16b
+
+ ldr q31, [x3, w12, sxtw]
+ ldr q27, [x17, w12, sxtw]
+
+// p6 = prev2[prefs6] + next2[prefs6]; // p6 = v24,v25
+ uaddl v24.8h, v25.8b, v28.8b
+ uaddl2 v25.8h, v25.16b, v28.16b
+
+// j1 += coef_hf[2] * (m2 + p6); // (-p6:v24,v25)
+ add v24.8h, v24.8h, v22.8h
+ add v25.8h, v25.8h, v23.8h
+ UMLAL4K v6, v7, v8, v9, v24, v25, v0.h[4]
+
+// m1 = cur[mrefs]; // m1 = v24
+ ldr q24, [x3, w9, sxtw]
+
+// p5 = cur[prefs5]; // p5 = v25
+ ldr q25, [x3, w15, sxtw]
+
+// p2 = prev2[prefs2] + next2[prefs2]; // p2 = v26, v27
+// temporal_diff2 = FFABS(prev2[prefs2] - next2[prefs2]); // td2 = v14
+// d2 = p2 >> 1; // d2 = v15
+ uabd v14.16b, v31.16b, v27.16b
+ uhadd v15.16b, v31.16b, v27.16b
+ uaddl v26.8h, v27.8b, v31.8b
+ uaddl2 v27.8h, v27.16b, v31.16b
+
+// j1 += coef_hf[0] * p2; // -
+ UMLAL4K v6, v7, v8, v9, v26, v27, v0.h[2]
+
+// i1 -= coef_hf[1] * (m2 + p2); // (-m2:v22,v23*) (-p2:v26*,v27*)
+ add v22.8h, v22.8h, v26.8h
+ add v23.8h, v23.8h, v27.8h
+ UMLSL4K v2, v3, v4, v5, v22, v23, v0.h[3]
+
+// p1 = cur[prefs]; // p1 = v22
+ ldr q22, [x3, w11, sxtw]
+
+// j1 -= coef_lf[1] * 4 * (m1 + p5); // -
+ uaddl v26.8h, v24.8b, v25.8b
+ uaddl2 v27.8h, v24.16b, v25.16b
+ UMLSL4K v6, v7, v8, v9, v26, v27, v0.h[1]
+
+// j2 = (coef_sp[0] * (p1 + p3) - coef_sp[1] * (m1 + p5)) >> 13; // (-p5:v25*) j2=v16
+ uaddl v18.8h, v22.8b, v21.8b
+ uaddl2 v19.8h, v22.16b, v21.16b
+ UMULL4K v28, v29, v30, v31, v18, v19, v0.h[6]
+
+ uaddl v18.8h, v24.8b, v25.8b
+ uaddl2 v19.8h, v24.16b, v25.16b
+ UMLSL4K v28, v29, v30, v31, v18, v19, v0.h[7]
+
+ SQSHRUNN v16, v28, v29, v30, v31, 13
+
+// i2 = (coef_sp[0] * (m1 + p1) - coef_sp[1] * (m3 + p3)) >> 13; // (-m3:v20*) i2=v17
+ uaddl v18.8h, v22.8b, v24.8b
+ uaddl2 v19.8h, v22.16b, v24.16b
+ UMULL4K v28, v29, v30, v31, v18, v19, v0.h[6]
+
+ uaddl v18.8h, v20.8b, v21.8b
+ uaddl2 v19.8h, v20.16b, v21.16b
+ UMLSL4K v28, v29, v30, v31, v18, v19, v0.h[7]
+
+ SQSHRUNN v17, v28, v29, v30, v31, 13
+
+// i1 += coef_lf[0] * 4 * (m1 + p1); // p1 = v22, m1 = v24
+ uaddl v26.8h, v24.8b, v22.8b
+ uaddl2 v27.8h, v24.16b, v22.16b
+ UMLAL4K v2, v3, v4, v5, v26, v27, v0.h[0]
+
+ ldr q31, [x2, w9, sxtw]
+ ldr q29, [x4, w9, sxtw]
+
+// j1 += coef_lf[0] * 4 * (p1 + p3); // p1 = v22, p3 = v21
+ uaddl v26.8h, v21.8b, v22.8b
+ uaddl2 v27.8h, v21.16b, v22.16b
+ UMLAL4K v6, v7, v8, v9, v26, v27, v0.h[0]
+
+ ldr q30, [x2, w11, sxtw]
+ ldr q28, [x4, w11, sxtw]
+
+// i1 >>= 15; // i1 = v2, -v3, -v4*, -v5*
+ SQSHRUNN v2, v2, v3, v4, v5, 15
+
+// j1 >>= 15; // j1 = v3, -v6*, -v7*, -v8*, -v9*
+ SQSHRUNN v3, v6, v7, v8, v9, 15
+
+// {
+// int t1 =(FFABS(prev[mrefs] - m1) + FFABS(prev[prefs] - p1)) >> 1;
+// int t2 =(FFABS(next[mrefs] - m1) + FFABS(next[prefs] - p1)) >> 1;
+ uabd v30.16b, v22.16b, v30.16b
+ uabd v31.16b, v24.16b, v31.16b
+ uabd v28.16b, v22.16b, v28.16b
+ uabd v29.16b, v24.16b, v29.16b
+ uhadd v31.16b, v31.16b, v30.16b
+ uhadd v29.16b, v29.16b, v28.16b
+
+ ldr q27, [x2, w13, sxtw]
+ ldr q26, [x4, w13, sxtw]
+
+// diff0 = FFMAX3(temporal_diff0 >> 1, t1, t2); // diff0=v18
+ ushr v18.16b, v11.16b, #1
+ umax v18.16b, v18.16b, v31.16b
+ umax v18.16b, v18.16b, v29.16b
+// } // v28, v30 preserved for next block
+// { // tdiff2 = v14
+// int t1 =(FFABS(prev[prefs] - p1) + FFABS(prev[prefs3] - p3)) >> 1;
+// int t2 =(FFABS(next[prefs] - p1) + FFABS(next[prefs3] - p3)) >> 1;
+ uabd v31.16b, v21.16b, v27.16b
+ uabd v29.16b, v21.16b, v26.16b
+ uhadd v31.16b, v31.16b, v30.16b
+ uhadd v29.16b, v29.16b, v28.16b
+
+// diff2 = FFMAX3(temporal_diff2 >> 1, t1, t2); // diff2=v19
+ ushr v19.16b, v14.16b, #1
+ umax v19.16b, v19.16b, v31.16b
+ umax v19.16b, v19.16b, v29.16b
+// }
+
+ // diff0 = v18, (m2 >> 1) = v13, m1 = v24, d0 = v10, p1 = v22, d2 = v15
+ SPAT_CHECK v18, v13, v24, v10, v22, v15, v31, v30, v29, v28
+
+ // diff2 = v19, d0 = v10, p1 = v22, d2 = v15, p3 = v21, (p4 >> 1) = v12
+ SPAT_CHECK v19, v10, v22, v15, v21, v12, v31, v30, v29, v28
+
+ // j1 = v3, j2 = v16, p1 = v22, d2 = v15, p3 = v21, td2 = v14, diff2 = v19
+ INTERPOL v3, v3, v16, v22, v15, v21, v14, v19, v31, v30, v29
+
+// dst[d_stride * 2] = av_clip_uint8(interpol);
+ str q3, [x0, w5, sxtw]
+
+// dst[d_stride] = p1;
+ str q22, [x0, w1, sxtw]
+
+ // i1 = v2, i2 = v17, m1 = v24, d0 = v10, p1 = v22, td2 = v11, diff2 = v18
+ INTERPOL v2, v2, v17, v24, v10, v22, v11, v18, v31, v30, v29
+
+// dst[0] = av_clip_uint8(interpol);
+ str q2, [x0], #16
+// }
+//
+// dst++;
+// cur++;
+// prev++;
+// prev2++;
+// next++;
+// }
+ subs w10, w10, #16
+ add x2, x2, #16
+ add x3, x3, #16
+ add x4, x4, #16
+ add x17, x17, #16
+ bgt 10b
+
+ POP_VREGS
+99:
+ ret
+endfunc
+
// ===========================================================================
//
// void filter_line(
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 14/15] tests/checkasm: Add test for vf_bwdif filter_line3
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (12 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 13/15] avfilter/vf_bwdif: Add neon for filter_line3 John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 15/15] avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines John Cox
2023-07-02 21:09 ` [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions Martin Storsjö
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
tests/checkasm/vf_bwdif.c | 81 +++++++++++++++++++++++++++++++++++++++
1 file changed, 81 insertions(+)
diff --git a/tests/checkasm/vf_bwdif.c b/tests/checkasm/vf_bwdif.c
index 5fdba09fdc..3399cacdf7 100644
--- a/tests/checkasm/vf_bwdif.c
+++ b/tests/checkasm/vf_bwdif.c
@@ -28,6 +28,10 @@
for (size_t i = 0; i < count; i++) \
buf0[i] = buf1[i] = rnd() & mask
+#define randomize_overflow_check(buf0, buf1, mask, count) \
+ for (size_t i = 0; i < count; i++) \
+ buf0[i] = buf1[i] = (rnd() & 1) != 0 ? mask : 0;
+
#define BODY(type, depth) \
do { \
type prev0[9*WIDTH], prev1[9*WIDTH]; \
@@ -83,6 +87,83 @@ void checkasm_check_vf_bwdif(void)
report("bwdif10");
}
+ if (!ctx_8.filter_line3)
+ ctx_8.filter_line3 = ff_bwdif_filter_line3_c;
+
+ {
+ LOCAL_ALIGNED_16(uint8_t, prev0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, prev1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, next0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, next1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, cur0, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, cur1, [11*WIDTH]);
+ LOCAL_ALIGNED_16(uint8_t, dst0, [WIDTH*3]);
+ LOCAL_ALIGNED_16(uint8_t, dst1, [WIDTH*3]);
+ const int stride = WIDTH;
+ const int mask = (1<<8)-1;
+ int parity;
+
+ for (parity = 0; parity != 2; ++parity) {
+ if (check_func(ctx_8.filter_line3, "bwdif8.line3.rnd.p%d", parity)) {
+
+ declare_func(void, void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int prefs,
+ int w, int parity, int clip_max);
+
+ randomize_buffers(prev0, prev1, mask, 11*WIDTH);
+ randomize_buffers(next0, next1, mask, 11*WIDTH);
+ randomize_buffers( cur0, cur1, mask, 11*WIDTH);
+
+ call_ref(dst0, stride,
+ prev0 + stride * 4, cur0 + stride * 4, next0 + stride * 4, stride,
+ WIDTH, parity, mask);
+ call_new(dst1, stride,
+ prev1 + stride * 4, cur1 + stride * 4, next1 + stride * 4, stride,
+ WIDTH, parity, mask);
+
+ if (memcmp(dst0, dst1, WIDTH*3)
+ || memcmp(prev0, prev1, WIDTH*11)
+ || memcmp(next0, next1, WIDTH*11)
+ || memcmp( cur0, cur1, WIDTH*11))
+ fail();
+
+ bench_new(dst1, stride,
+ prev1 + stride * 4, cur1 + stride * 4, next1 + stride * 4, stride,
+ WIDTH, parity, mask);
+ }
+ }
+
+ // Use just 0s and ~0s to try to provoke bad cropping or overflow
+ // Parity makes no difference to this test so just test 0
+ if (check_func(ctx_8.filter_line3, "bwdif8.line3.overflow")) {
+
+ declare_func(void, void * dst1, int d_stride,
+ const void * prev1, const void * cur1, const void * next1, int prefs,
+ int w, int parity, int clip_max);
+
+ randomize_overflow_check(prev0, prev1, mask, 11*WIDTH);
+ randomize_overflow_check(next0, next1, mask, 11*WIDTH);
+ randomize_overflow_check( cur0, cur1, mask, 11*WIDTH);
+
+ call_ref(dst0, stride,
+ prev0 + stride * 4, cur0 + stride * 4, next0 + stride * 4, stride,
+ WIDTH, 0, mask);
+ call_new(dst1, stride,
+ prev1 + stride * 4, cur1 + stride * 4, next1 + stride * 4, stride,
+ WIDTH, 0, mask);
+
+ if (memcmp(dst0, dst1, WIDTH*3)
+ || memcmp(prev0, prev1, WIDTH*11)
+ || memcmp(next0, next1, WIDTH*11)
+ || memcmp( cur0, cur1, WIDTH*11))
+ fail();
+
+ // No point to benching
+ }
+
+ report("bwdif8.line3");
+ }
+
{
LOCAL_ALIGNED_16(uint8_t, prev0, [11*WIDTH]);
LOCAL_ALIGNED_16(uint8_t, prev1, [11*WIDTH]);
--
2.39.2
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https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
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^ permalink raw reply [flat|nested] 29+ messages in thread
* [FFmpeg-devel] [PATCH v2 15/15] avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (13 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 14/15] tests/checkasm: Add test for vf_bwdif filter_line3 John Cox
@ 2023-07-02 12:32 ` John Cox
2023-07-02 21:09 ` [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions Martin Storsjö
15 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-02 12:32 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: thomas.mundt, John Cox, martin
Round job start lines down to a multiple of 4. This means that if
filter_line3 exists then filter_line will not sometimes be called
once at the end of a slice depending on thread count. The final slice
may do up to 3 extra lines but filter_edge is faster than filter_line
so it is unlikely to create any noticable thread load variation.
Signed-off-by: John Cox <jc@kynesim.co.uk>
---
libavfilter/vf_bwdif.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index 52bc676cf8..6701208efe 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -237,6 +237,13 @@ static void filter_edge_16bit(void *dst1, void *prev1, void *cur1, void *next1,
FILTER2()
}
+// Round job start line down to multiple of 4 so that if filter_line3 exists
+// and the frame is a multiple of 4 high then filter_line will never be called
+static inline int job_start(const int jobnr, const int nb_jobs, const int h)
+{
+ return jobnr >= nb_jobs ? h : ((h * jobnr) / nb_jobs) & ~3;
+}
+
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
BWDIFContext *s = ctx->priv;
@@ -246,8 +253,8 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
int clip_max = (1 << (yadif->csp->comp[td->plane].depth)) - 1;
int df = (yadif->csp->comp[td->plane].depth + 7) / 8;
int refs = linesize / df;
- int slice_start = (td->h * jobnr ) / nb_jobs;
- int slice_end = (td->h * (jobnr+1)) / nb_jobs;
+ int slice_start = job_start(jobnr, nb_jobs, td->h);
+ int slice_end = job_start(jobnr + 1, nb_jobs, td->h);
int y;
for (y = slice_start; y < slice_end; y++) {
@@ -310,7 +317,7 @@ static void filter(AVFilterContext *ctx, AVFrame *dstpic,
td.plane = i;
ff_filter_execute(ctx, filter_slice, &td, NULL,
- FFMIN(h, ff_filter_get_nb_threads(ctx)));
+ FFMIN((h+3)/4, ff_filter_get_nb_threads(ctx)));
}
if (yadif->current_field == YADIF_FIELD_END) {
yadif->current_field = YADIF_FIELD_NORMAL;
--
2.39.2
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon John Cox
@ 2023-07-02 14:02 ` Lynne
2023-07-02 14:09 ` Kieran Kunhya
0 siblings, 1 reply; 29+ messages in thread
From: Lynne @ 2023-07-02 14:02 UTC (permalink / raw)
To: FFmpeg development discussions and patches
Jul 2, 2023, 14:34 by jc@kynesim.co.uk:
> Signed-off-by: John Cox <jc@kynesim.co.uk>
> ---
> libavfilter/aarch64/vf_bwdif_neon.S | 73 +++++++++++++++++++++++++++++
> 1 file changed, 73 insertions(+)
>
> diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
> index 6a614f8d6e..48dc7bcd9d 100644
> --- a/libavfilter/aarch64/vf_bwdif_neon.S
> +++ b/libavfilter/aarch64/vf_bwdif_neon.S
> @@ -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
>
Could you squash? Adding empty files and then commit by
commit filling them up is pointless and makes it harder to
review. Just export what you need in one commit, and add
everything else in another.
Also, keep in mind the final spatial clip at the end should be
removable. I discovered it makes the filter look quite a lot
better. Currently, only the Vulkan version does it, but we're
looking into changing the C/asm versions too, and you're the
second one to rush into implementing asm for it before we've
had a chance to discuss it properly.
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
2023-07-02 14:02 ` Lynne
@ 2023-07-02 14:09 ` Kieran Kunhya
2023-07-02 16:55 ` Lynne
0 siblings, 1 reply; 29+ messages in thread
From: Kieran Kunhya @ 2023-07-02 14:09 UTC (permalink / raw)
To: FFmpeg development discussions and patches
On Sun, 2 Jul 2023, 16:02 Lynne <dev@lynne.ee> wrote:
>
> Also, keep in mind the final spatial clip at the end should be
> removable. I discovered it makes the filter look quite a lot
> better. Currently, only the Vulkan version does it, but we're
> looking into changing the C/asm versions too, and you're the
> second one to rush into implementing asm for it before we've
> had a chance to discuss it properly.
>
Didn't Thomas Mundt ask you to provide samples to back up your claim?
Kieran
>
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
2023-07-02 14:09 ` Kieran Kunhya
@ 2023-07-02 16:55 ` Lynne
0 siblings, 0 replies; 29+ messages in thread
From: Lynne @ 2023-07-02 16:55 UTC (permalink / raw)
To: FFmpeg development discussions and patches
Jul 2, 2023, 16:09 by kierank@obe.tv:
> On Sun, 2 Jul 2023, 16:02 Lynne <dev@lynne.ee> wrote:
>
>>
>> Also, keep in mind the final spatial clip at the end should be
>> removable. I discovered it makes the filter look quite a lot
>> better. Currently, only the Vulkan version does it, but we're
>> looking into changing the C/asm versions too, and you're the
>> second one to rush into implementing asm for it before we've
>> had a chance to discuss it properly.
>>
>
> Didn't Thomas Mundt ask you to provide samples to back up your claim?
>
I haven't had time to.
Until you made me just now.
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* Re: [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation John Cox
@ 2023-07-02 17:26 ` Thomas Mundt
2023-07-02 21:12 ` Martin Storsjö
0 siblings, 1 reply; 29+ messages in thread
From: Thomas Mundt @ 2023-07-02 17:26 UTC (permalink / raw)
To: FFmpeg development discussions and patches; +Cc: martin, John Cox
Am So., 2. Juli 2023 um 14:34 Uhr schrieb John Cox <jc@kynesim.co.uk>:
> Add an optional filter_line3 to the available optimisations.
>
> filter_line3 is equivalent to filter_line, memcpy, filter_line
>
> filter_line shares quite a number of loads and some calculations in
> common with its next iteration and testing shows that using aarch64
> neon filter_line3s performance is 30% better than two filter_lines
> and a memcpy.
>
> Signed-off-by: John Cox <jc@kynesim.co.uk>
> ---
> libavfilter/bwdif.h | 7 +++++++
> libavfilter/vf_bwdif.c | 31 +++++++++++++++++++++++++++++++
> 2 files changed, 38 insertions(+)
>
> diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
> index cce99953f3..496cec72ef 100644
> --- a/libavfilter/bwdif.h
> +++ b/libavfilter/bwdif.h
> @@ -35,6 +35,9 @@ typedef struct BWDIFContext {
> void (*filter_edge)(void *dst, void *prev, void *cur, void *next,
> int w, int prefs, int mrefs, int prefs2, int
> mrefs2,
> int parity, int clip_max, int spat);
> + void (*filter_line3)(void *dst, int dstride,
> + const void *prev, const void *cur, const void
> *next, int prefs,
> + int w, int parity, int clip_max);
> } BWDIFContext;
>
> void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int bit_depth);
> @@ -53,4 +56,8 @@ void ff_bwdif_filter_line_c(void *dst1, void *prev1,
> void *cur1, void *next1,
> int prefs3, int mrefs3, int prefs4, int
> mrefs4,
> int parity, int clip_max);
>
> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> + const void * prev1, const void * cur1, const
> void * next1, int s_stride,
> + int w, int parity, int clip_max);
> +
> #endif /* AVFILTER_BWDIF_H */
> diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
> index 26349da1fd..52bc676cf8 100644
> --- a/libavfilter/vf_bwdif.c
> +++ b/libavfilter/vf_bwdif.c
> @@ -150,6 +150,31 @@ void ff_bwdif_filter_line_c(void *dst1, void *prev1,
> void *cur1, void *next1,
> FILTER2()
> }
>
> +#define NEXT_LINE()\
> + dst += d_stride; \
> + prev += prefs; \
> + cur += prefs; \
> + next += prefs;
> +
> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> + const void * prev1, const void * cur1, const
> void * next1, int s_stride,
> + int w, int parity, int clip_max)
> +{
> + const int prefs = s_stride;
> + uint8_t * dst = dst1;
> + const uint8_t * prev = prev1;
> + const uint8_t * cur = cur1;
> + const uint8_t * next = next1;
> +
> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur, (void*)next, w,
> + prefs, -prefs, prefs * 2, - prefs * 2, prefs *
> 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
> + NEXT_LINE();
> + memcpy(dst, cur, w);
> + NEXT_LINE();
> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur, (void*)next, w,
> + prefs, -prefs, prefs * 2, - prefs * 2, prefs *
> 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
> +}
> +
> 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)
> @@ -244,6 +269,11 @@ static int filter_slice(AVFilterContext *ctx, void
> *arg, int jobnr, int nb_jobs)
> refs << 1, -(refs << 1),
> td->parity ^ td->tff, clip_max,
> (y < 2) || ((y + 3) > td->h) ? 0 : 1);
> + } else if (s->filter_line3 && y + 2 < slice_end && y + 6 <
> td->h) {
> + s->filter_line3(dst, td->frame->linesize[td->plane],
> + prev, cur, next, linesize, td->w,
> + td->parity ^ td->tff, clip_max);
> + y += 2;
> } else {
> s->filter_line(dst, prev, cur, next, td->w,
> refs, -refs, refs << 1, -(refs << 1),
>
Maybe I'm missing something, but doesn't this kick out most of the x86 SIMD
optimization because there is no filter_line3?
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon John Cox
@ 2023-07-02 21:04 ` Martin Storsjö
0 siblings, 0 replies; 29+ messages in thread
From: Martin Storsjö @ 2023-07-02 21:04 UTC (permalink / raw)
To: John Cox; +Cc: thomas.mundt, ffmpeg-devel
On Sun, 2 Jul 2023, John Cox wrote:
> Add macros for dual scalar half->single multiply and accumulate
> Add macro for shift, saturate and shorten single to byte
> Add filter constants
>
> Signed-off-by: John Cox <jc@kynesim.co.uk>
> ---
> libavfilter/aarch64/vf_bwdif_neon.S | 53 +++++++++++++++++++++++++++++
> 1 file changed, 53 insertions(+)
>
> diff --git a/libavfilter/aarch64/vf_bwdif_neon.S b/libavfilter/aarch64/vf_bwdif_neon.S
> index 639ab22998..c2f5eb1f73 100644
> --- a/libavfilter/aarch64/vf_bwdif_neon.S
> +++ b/libavfilter/aarch64/vf_bwdif_neon.S
> @@ -23,3 +23,56 @@
>
> #include "libavutil/aarch64/asm.S"
>
> +// Space taken on the stack by an int (32-bit)
> +#ifdef __APPLE__
> +.set SP_INT, 4
> +#else
> +.set SP_INT, 8
> +#endif
Ok I guess this works and doesn't require excessive ifdefs. It can end up
brittle though, but I guess this form can be tolerable.
// Martin
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* Re: [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
` (14 preceding siblings ...)
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 15/15] avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines John Cox
@ 2023-07-02 21:09 ` Martin Storsjö
2023-07-03 8:44 ` John Cox
15 siblings, 1 reply; 29+ messages in thread
From: Martin Storsjö @ 2023-07-02 21:09 UTC (permalink / raw)
To: John Cox; +Cc: thomas.mundt, ffmpeg-devel
On Sun, 2 Jul 2023, John Cox wrote:
> Also adds a filter_line3 method which on aarch64 neon yields approx 30%
> speedup over 2xfilter_line and a memcpy
>
> Differences from v1:
> .align 16 corrected to .balign 16
> SXTW tolower
> Mac ABI (hopefully) fixed
> V register pop/push macroed & prettified
>
> John Cox (15):
> avfilter/vf_bwdif: Add outline for aarch neon functions
> avfilter/vf_bwdif: Add common macros and consts for aarch64 neon
> avfilter/vf_bwdif: Export C filter_intra
> avfilter/vf_bwdif: Add neon for filter_intra
> tests/checkasm: Add test for vf_bwdif filter_intra
> avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
> avfilter/vf_bwdif: Export C filter_edge
> avfilter/vf_bwdif: Add neon for filter_edge
> tests/checkasm: Add test for vf_bwdif filter_edge
> avfilter/vf_bwdif: Export C filter_line
> avfilter/vf_bwdif: Add neon for filter_line
> avfilter/vf_bwdif: Add a filter_line3 method for optimisation
> avfilter/vf_bwdif: Add neon for filter_line3
> tests/checkasm: Add test for vf_bwdif filter_line3
> avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines
Overall, I'd suggest squashing/reordering the patches like this:
- tests/checkasm: Add test for vf_bwdif filter_intra
- avfilter/vf_bwdif: Add neon for filter_intra
(With the preceding patches squashed. For extra common macros, only add
the ones you use in this patch here.)
- tests/checkasm: Add test for vf_bwdif filter_edge
- avfilter/vf_bwdif: Add neon for filter_edge (with other dependencies
squashed)
- avfilter/vf_bwdif: Add neon for filter_line
- avfilter/vf_bwdif: Add a filter_line3 method for optimisation
+ checkasm test squashed
- avfilter/vf_bwdif: Add neon for filter_line3
// Martin
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* Re: [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation
2023-07-02 17:26 ` Thomas Mundt
@ 2023-07-02 21:12 ` Martin Storsjö
2023-07-03 8:27 ` John Cox
0 siblings, 1 reply; 29+ messages in thread
From: Martin Storsjö @ 2023-07-02 21:12 UTC (permalink / raw)
To: Thomas Mundt; +Cc: FFmpeg development discussions and patches, John Cox
On Sun, 2 Jul 2023, Thomas Mundt wrote:
> Am So., 2. Juli 2023 um 14:34 Uhr schrieb John Cox <jc@kynesim.co.uk>:
> Add an optional filter_line3 to the available optimisations.
>
> filter_line3 is equivalent to filter_line, memcpy, filter_line
>
> filter_line shares quite a number of loads and some calculations
> in
> common with its next iteration and testing shows that using
> aarch64
> neon filter_line3s performance is 30% better than two
> filter_lines
> and a memcpy.
>
> Signed-off-by: John Cox <jc@kynesim.co.uk>
> ---
> libavfilter/bwdif.h | 7 +++++++
> libavfilter/vf_bwdif.c | 31 +++++++++++++++++++++++++++++++
> 2 files changed, 38 insertions(+)
>
> diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
> index cce99953f3..496cec72ef 100644
> --- a/libavfilter/bwdif.h
> +++ b/libavfilter/bwdif.h
> @@ -35,6 +35,9 @@ typedef struct BWDIFContext {
> void (*filter_edge)(void *dst, void *prev, void *cur, void
> *next,
> int w, int prefs, int mrefs, int
> prefs2, int mrefs2,
> int parity, int clip_max, int spat);
> + void (*filter_line3)(void *dst, int dstride,
> + const void *prev, const void *cur,
> const void *next, int prefs,
> + int w, int parity, int clip_max);
> } BWDIFContext;
>
> void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int
> bit_depth);
> @@ -53,4 +56,8 @@ void ff_bwdif_filter_line_c(void *dst1, void
> *prev1, void *cur1, void *next1,
> int prefs3, int mrefs3, int prefs4,
> int mrefs4,
> int parity, int clip_max);
>
> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> + const void * prev1, const void *
> cur1, const void * next1, int s_stride,
> + int w, int parity, int clip_max);
> +
> #endif /* AVFILTER_BWDIF_H */
> diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
> index 26349da1fd..52bc676cf8 100644
> --- a/libavfilter/vf_bwdif.c
> +++ b/libavfilter/vf_bwdif.c
> @@ -150,6 +150,31 @@ void ff_bwdif_filter_line_c(void *dst1,
> void *prev1, void *cur1, void *next1,
> FILTER2()
> }
>
> +#define NEXT_LINE()\
> + dst += d_stride; \
> + prev += prefs; \
> + cur += prefs; \
> + next += prefs;
> +
> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> + const void * prev1, const void *
> cur1, const void * next1, int s_stride,
> + int w, int parity, int clip_max)
> +{
> + const int prefs = s_stride;
> + uint8_t * dst = dst1;
> + const uint8_t * prev = prev1;
> + const uint8_t * cur = cur1;
> + const uint8_t * next = next1;
> +
> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
> (void*)next, w,
> + prefs, -prefs, prefs * 2, - prefs *
> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
> clip_max);
> + NEXT_LINE();
> + memcpy(dst, cur, w);
> + NEXT_LINE();
> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
> (void*)next, w,
> + prefs, -prefs, prefs * 2, - prefs *
> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
> clip_max);
> +}
> +
> 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)
> @@ -244,6 +269,11 @@ static int filter_slice(AVFilterContext
> *ctx, void *arg, int jobnr, int nb_jobs)
> refs << 1, -(refs << 1),
> td->parity ^ td->tff, clip_max,
> (y < 2) || ((y + 3) > td->h) ? 0
> : 1);
> + } else if (s->filter_line3 && y + 2 < slice_end &&
> y + 6 < td->h) {
> + s->filter_line3(dst,
> td->frame->linesize[td->plane],
> + prev, cur, next, linesize,
> td->w,
> + td->parity ^ td->tff,
> clip_max);
> + y += 2;
> } else {
> s->filter_line(dst, prev, cur, next, td->w,
> refs, -refs, refs << 1, -(refs
> << 1),
>
>
> Maybe I'm missing something, but doesn't this kick out most of the x86 SIMD
> optimization because there is no filter_line3?
It looks to me like it doesn't; it adds a new optional function pointer,
but the reference C function isn't set. So by default (and on x86)
filter_line3 is null, and the old assembly optimized codepaths are used.
But if an architecture does implement filter_line3, that's used instead of
filter_line.
// Martin
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* Re: [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra John Cox
@ 2023-07-02 21:14 ` Martin Storsjö
2023-07-04 10:18 ` John Cox
0 siblings, 1 reply; 29+ messages in thread
From: Martin Storsjö @ 2023-07-02 21:14 UTC (permalink / raw)
To: John Cox; +Cc: thomas.mundt, ffmpeg-devel
On Sun, 2 Jul 2023, John Cox wrote:
> Signed-off-by: John Cox <jc@kynesim.co.uk>
> ---
> tests/checkasm/vf_bwdif.c | 37 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 37 insertions(+)
>
> diff --git a/tests/checkasm/vf_bwdif.c b/tests/checkasm/vf_bwdif.c
> index 46224bb575..034bbabb4c 100644
> --- a/tests/checkasm/vf_bwdif.c
> +++ b/tests/checkasm/vf_bwdif.c
> @@ -20,6 +20,7 @@
> #include "checkasm.h"
> #include "libavcodec/internal.h"
> #include "libavfilter/bwdif.h"
> +#include "libavutil/mem_internal.h"
>
> #define WIDTH 256
>
> @@ -81,4 +82,40 @@ void checkasm_check_vf_bwdif(void)
> BODY(uint16_t, 10);
> report("bwdif10");
> }
> +
> + if (check_func(ctx_8.filter_intra, "bwdif8.intra")) {
> + LOCAL_ALIGNED_16(uint8_t, cur0, [11*WIDTH]);
> + LOCAL_ALIGNED_16(uint8_t, cur1, [11*WIDTH]);
> + LOCAL_ALIGNED_16(uint8_t, dst0, [WIDTH*3]);
> + LOCAL_ALIGNED_16(uint8_t, dst1, [WIDTH*3]);
> + const int stride = WIDTH;
> + const int mask = (1<<8)-1;
> +
> + declare_func(void, void *dst1, void *cur1, int w, int prefs, int mrefs,
> + int prefs3, int mrefs3, int parity, int clip_max);
> +
> + randomize_buffers( cur0, cur1, mask, 11*WIDTH);
> + memset(dst0, 0xba, WIDTH * 3);
> + memset(dst1, 0xba, WIDTH * 3);
> +
> + call_ref(dst0 + stride,
> + cur0 + stride * 4, WIDTH,
> + stride, -stride, stride * 3, -stride * 3,
> + 0, mask);
> + call_new(dst1 + stride,
> + cur0 + stride * 4, WIDTH,
> + stride, -stride, stride * 3, -stride * 3,
> + 0, mask);
> +
> + if (memcmp(dst0, dst1, WIDTH*3)
> + || memcmp( cur0, cur1, WIDTH*11))
> + fail();
> +
> + bench_new(dst1 + stride,
> + cur0 + stride * 4, WIDTH,
> + stride, -stride, stride * 3, -stride * 3,
> + 0, mask);
> +
> + report("bwdif8.intra");
> + }
It's a bit of a shame that this only tests things for 8 bit, not 10, but I
guess that's better than nothing. The way the current code is set up to
template both variants of the tests isn't very neat either...
// Martin
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* Re: [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation
2023-07-02 21:12 ` Martin Storsjö
@ 2023-07-03 8:27 ` John Cox
2023-07-03 22:16 ` Thomas Mundt
0 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-03 8:27 UTC (permalink / raw)
To: Martin Storsjö
Cc: Thomas Mundt, FFmpeg development discussions and patches
On Mon, 3 Jul 2023 00:12:46 +0300 (EEST), you wrote:
>On Sun, 2 Jul 2023, Thomas Mundt wrote:
>
>> Am So., 2. Juli 2023 um 14:34 Uhr schrieb John Cox <jc@kynesim.co.uk>:
>> Add an optional filter_line3 to the available optimisations.
>>
>> filter_line3 is equivalent to filter_line, memcpy, filter_line
>>
>> filter_line shares quite a number of loads and some calculations
>> in
>> common with its next iteration and testing shows that using
>> aarch64
>> neon filter_line3s performance is 30% better than two
>> filter_lines
>> and a memcpy.
>>
>> Signed-off-by: John Cox <jc@kynesim.co.uk>
>> ---
>> libavfilter/bwdif.h | 7 +++++++
>> libavfilter/vf_bwdif.c | 31 +++++++++++++++++++++++++++++++
>> 2 files changed, 38 insertions(+)
>>
>> diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
>> index cce99953f3..496cec72ef 100644
>> --- a/libavfilter/bwdif.h
>> +++ b/libavfilter/bwdif.h
>> @@ -35,6 +35,9 @@ typedef struct BWDIFContext {
>> void (*filter_edge)(void *dst, void *prev, void *cur, void
>> *next,
>> int w, int prefs, int mrefs, int
>> prefs2, int mrefs2,
>> int parity, int clip_max, int spat);
>> + void (*filter_line3)(void *dst, int dstride,
>> + const void *prev, const void *cur,
>> const void *next, int prefs,
>> + int w, int parity, int clip_max);
>> } BWDIFContext;
>>
>> void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int
>> bit_depth);
>> @@ -53,4 +56,8 @@ void ff_bwdif_filter_line_c(void *dst1, void
>> *prev1, void *cur1, void *next1,
>> int prefs3, int mrefs3, int prefs4,
>> int mrefs4,
>> int parity, int clip_max);
>>
>> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
>> + const void * prev1, const void *
>> cur1, const void * next1, int s_stride,
>> + int w, int parity, int clip_max);
>> +
>> #endif /* AVFILTER_BWDIF_H */
>> diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
>> index 26349da1fd..52bc676cf8 100644
>> --- a/libavfilter/vf_bwdif.c
>> +++ b/libavfilter/vf_bwdif.c
>> @@ -150,6 +150,31 @@ void ff_bwdif_filter_line_c(void *dst1,
>> void *prev1, void *cur1, void *next1,
>> FILTER2()
>> }
>>
>> +#define NEXT_LINE()\
>> + dst += d_stride; \
>> + prev += prefs; \
>> + cur += prefs; \
>> + next += prefs;
>> +
>> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
>> + const void * prev1, const void *
>> cur1, const void * next1, int s_stride,
>> + int w, int parity, int clip_max)
>> +{
>> + const int prefs = s_stride;
>> + uint8_t * dst = dst1;
>> + const uint8_t * prev = prev1;
>> + const uint8_t * cur = cur1;
>> + const uint8_t * next = next1;
>> +
>> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
>> (void*)next, w,
>> + prefs, -prefs, prefs * 2, - prefs *
>> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
>> clip_max);
>> + NEXT_LINE();
>> + memcpy(dst, cur, w);
>> + NEXT_LINE();
>> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
>> (void*)next, w,
>> + prefs, -prefs, prefs * 2, - prefs *
>> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
>> clip_max);
>> +}
>> +
>> 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)
>> @@ -244,6 +269,11 @@ static int filter_slice(AVFilterContext
>> *ctx, void *arg, int jobnr, int nb_jobs)
>> refs << 1, -(refs << 1),
>> td->parity ^ td->tff, clip_max,
>> (y < 2) || ((y + 3) > td->h) ? 0
>> : 1);
>> + } else if (s->filter_line3 && y + 2 < slice_end &&
>> y + 6 < td->h) {
>> + s->filter_line3(dst,
>> td->frame->linesize[td->plane],
>> + prev, cur, next, linesize,
>> td->w,
>> + td->parity ^ td->tff,
>> clip_max);
>> + y += 2;
>> } else {
>> s->filter_line(dst, prev, cur, next, td->w,
>> refs, -refs, refs << 1, -(refs
>> << 1),
>>
>>
>> Maybe I'm missing something, but doesn't this kick out most of the x86 SIMD
>> optimization because there is no filter_line3?
>
>It looks to me like it doesn't; it adds a new optional function pointer,
>but the reference C function isn't set. So by default (and on x86)
>filter_line3 is null, and the old assembly optimized codepaths are used.
>But if an architecture does implement filter_line3, that's used instead of
>filter_line.
Indeed - that is both the intent and what appears to occur when I test
it. I'd have made the C line3 function call down to line if I had any
context that allowed it but passing a real context seemed against the
spirit of nearly all the asm optimisations.
Regards
JC
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* Re: [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions
2023-07-02 21:09 ` [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions Martin Storsjö
@ 2023-07-03 8:44 ` John Cox
0 siblings, 0 replies; 29+ messages in thread
From: John Cox @ 2023-07-03 8:44 UTC (permalink / raw)
To: Martin Storsjö; +Cc: thomas.mundt, ffmpeg-devel
On Mon, 3 Jul 2023 00:09:52 +0300 (EEST), you wrote:
>On Sun, 2 Jul 2023, John Cox wrote:
>
>> Also adds a filter_line3 method which on aarch64 neon yields approx 30%
>> speedup over 2xfilter_line and a memcpy
>>
>> Differences from v1:
>> .align 16 corrected to .balign 16
>> SXTW tolower
>> Mac ABI (hopefully) fixed
>> V register pop/push macroed & prettified
>>
>> John Cox (15):
>> avfilter/vf_bwdif: Add outline for aarch neon functions
>> avfilter/vf_bwdif: Add common macros and consts for aarch64 neon
>> avfilter/vf_bwdif: Export C filter_intra
>> avfilter/vf_bwdif: Add neon for filter_intra
>> tests/checkasm: Add test for vf_bwdif filter_intra
>> avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon
>> avfilter/vf_bwdif: Export C filter_edge
>> avfilter/vf_bwdif: Add neon for filter_edge
>> tests/checkasm: Add test for vf_bwdif filter_edge
>> avfilter/vf_bwdif: Export C filter_line
>> avfilter/vf_bwdif: Add neon for filter_line
>> avfilter/vf_bwdif: Add a filter_line3 method for optimisation
>> avfilter/vf_bwdif: Add neon for filter_line3
>> tests/checkasm: Add test for vf_bwdif filter_line3
>> avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines
>
>Overall, I'd suggest squashing/reordering the patches like this:
>
>- tests/checkasm: Add test for vf_bwdif filter_intra
>- avfilter/vf_bwdif: Add neon for filter_intra
> (With the preceding patches squashed. For extra common macros, only add
> the ones you use in this patch here.)
>- tests/checkasm: Add test for vf_bwdif filter_edge
>- avfilter/vf_bwdif: Add neon for filter_edge (with other dependencies
> squashed)
>- avfilter/vf_bwdif: Add neon for filter_line
>- avfilter/vf_bwdif: Add a filter_line3 method for optimisation
> + checkasm test squashed
>- avfilter/vf_bwdif: Add neon for filter_line3
I'm happy with that if everyone else is - it is easy to merge patches -
harder to take them apart.
JC
>// Martin
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* Re: [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation
2023-07-03 8:27 ` John Cox
@ 2023-07-03 22:16 ` Thomas Mundt
0 siblings, 0 replies; 29+ messages in thread
From: Thomas Mundt @ 2023-07-03 22:16 UTC (permalink / raw)
To: John Cox; +Cc: Martin Storsjö, FFmpeg development discussions and patches
Am Mo., 3. Juli 2023 um 10:27 Uhr schrieb John Cox <jc@kynesim.co.uk>:
> On Mon, 3 Jul 2023 00:12:46 +0300 (EEST), you wrote:
>
> >On Sun, 2 Jul 2023, Thomas Mundt wrote:
> >
> >> Am So., 2. Juli 2023 um 14:34 Uhr schrieb John Cox <jc@kynesim.co.uk>:
> >> Add an optional filter_line3 to the available optimisations.
> >>
> >> filter_line3 is equivalent to filter_line, memcpy, filter_line
> >>
> >> filter_line shares quite a number of loads and some calculations
> >> in
> >> common with its next iteration and testing shows that using
> >> aarch64
> >> neon filter_line3s performance is 30% better than two
> >> filter_lines
> >> and a memcpy.
> >>
> >> Signed-off-by: John Cox <jc@kynesim.co.uk>
> >> ---
> >> libavfilter/bwdif.h | 7 +++++++
> >> libavfilter/vf_bwdif.c | 31 +++++++++++++++++++++++++++++++
> >> 2 files changed, 38 insertions(+)
> >>
> >> diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
> >> index cce99953f3..496cec72ef 100644
> >> --- a/libavfilter/bwdif.h
> >> +++ b/libavfilter/bwdif.h
> >> @@ -35,6 +35,9 @@ typedef struct BWDIFContext {
> >> void (*filter_edge)(void *dst, void *prev, void *cur, void
> >> *next,
> >> int w, int prefs, int mrefs, int
> >> prefs2, int mrefs2,
> >> int parity, int clip_max, int spat);
> >> + void (*filter_line3)(void *dst, int dstride,
> >> + const void *prev, const void *cur,
> >> const void *next, int prefs,
> >> + int w, int parity, int clip_max);
> >> } BWDIFContext;
> >>
> >> void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int
> >> bit_depth);
> >> @@ -53,4 +56,8 @@ void ff_bwdif_filter_line_c(void *dst1, void
> >> *prev1, void *cur1, void *next1,
> >> int prefs3, int mrefs3, int prefs4,
> >> int mrefs4,
> >> int parity, int clip_max);
> >>
> >> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> >> + const void * prev1, const void *
> >> cur1, const void * next1, int s_stride,
> >> + int w, int parity, int clip_max);
> >> +
> >> #endif /* AVFILTER_BWDIF_H */
> >> diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
> >> index 26349da1fd..52bc676cf8 100644
> >> --- a/libavfilter/vf_bwdif.c
> >> +++ b/libavfilter/vf_bwdif.c
> >> @@ -150,6 +150,31 @@ void ff_bwdif_filter_line_c(void *dst1,
> >> void *prev1, void *cur1, void *next1,
> >> FILTER2()
> >> }
> >>
> >> +#define NEXT_LINE()\
> >> + dst += d_stride; \
> >> + prev += prefs; \
> >> + cur += prefs; \
> >> + next += prefs;
> >> +
> >> +void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
> >> + const void * prev1, const void *
> >> cur1, const void * next1, int s_stride,
> >> + int w, int parity, int clip_max)
> >> +{
> >> + const int prefs = s_stride;
> >> + uint8_t * dst = dst1;
> >> + const uint8_t * prev = prev1;
> >> + const uint8_t * cur = cur1;
> >> + const uint8_t * next = next1;
> >> +
> >> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
> >> (void*)next, w,
> >> + prefs, -prefs, prefs * 2, - prefs *
> >> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
> >> clip_max);
> >> + NEXT_LINE();
> >> + memcpy(dst, cur, w);
> >> + NEXT_LINE();
> >> + ff_bwdif_filter_line_c(dst, (void*)prev, (void*)cur,
> >> (void*)next, w,
> >> + prefs, -prefs, prefs * 2, - prefs *
> >> 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity,
> >> clip_max);
> >> +}
> >> +
> >> 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)
> >> @@ -244,6 +269,11 @@ static int filter_slice(AVFilterContext
> >> *ctx, void *arg, int jobnr, int nb_jobs)
> >> refs << 1, -(refs << 1),
> >> td->parity ^ td->tff, clip_max,
> >> (y < 2) || ((y + 3) > td->h) ? 0
> >> : 1);
> >> + } else if (s->filter_line3 && y + 2 < slice_end &&
> >> y + 6 < td->h) {
> >> + s->filter_line3(dst,
> >> td->frame->linesize[td->plane],
> >> + prev, cur, next, linesize,
> >> td->w,
> >> + td->parity ^ td->tff,
> >> clip_max);
> >> + y += 2;
> >> } else {
> >> s->filter_line(dst, prev, cur, next, td->w,
> >> refs, -refs, refs << 1, -(refs
> >> << 1),
> >>
> >>
> >> Maybe I'm missing something, but doesn't this kick out most of the x86
> SIMD
> >> optimization because there is no filter_line3?
> >
> >It looks to me like it doesn't; it adds a new optional function pointer,
> >but the reference C function isn't set. So by default (and on x86)
> >filter_line3 is null, and the old assembly optimized codepaths are used.
> >But if an architecture does implement filter_line3, that's used instead
> of
> >filter_line.
>
> Indeed - that is both the intent and what appears to occur when I test
> it. I'd have made the C line3 function call down to line if I had any
> context that allowed it but passing a real context seemed against the
> spirit of nearly all the asm optimisations.
>
You´re right. Thanks.
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* Re: [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra
2023-07-02 21:14 ` Martin Storsjö
@ 2023-07-04 10:18 ` John Cox
2023-07-04 10:25 ` Kieran Kunhya
0 siblings, 1 reply; 29+ messages in thread
From: John Cox @ 2023-07-04 10:18 UTC (permalink / raw)
To: Martin Storsjö; +Cc: thomas.mundt, ffmpeg-devel
On Mon, 3 Jul 2023 00:14:16 +0300 (EEST), you wrote:
>[snip]
>It's a bit of a shame that this only tests things for 8 bit, not 10, but I
>guess that's better than nothing. The way the current code is set up to
>template both variants of the tests isn't very neat either...
Is there actually >8-bit interlaced content out in the wild? I've never
seen a single clip. If so where does it come from?
Just curious
JC
>// Martin
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* Re: [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra
2023-07-04 10:18 ` John Cox
@ 2023-07-04 10:25 ` Kieran Kunhya
0 siblings, 0 replies; 29+ messages in thread
From: Kieran Kunhya @ 2023-07-04 10:25 UTC (permalink / raw)
To: FFmpeg development discussions and patches
Cc: Martin Storsjö, thomas.mundt
On Tue, 4 Jul 2023, 11:18 John Cox, <jc@kynesim.co.uk> wrote:
> On Mon, 3 Jul 2023 00:14:16 +0300 (EEST), you wrote:
>
> >[snip]
> >It's a bit of a shame that this only tests things for 8 bit, not 10, but
> I
> >guess that's better than nothing. The way the current code is set up to
> >template both variants of the tests isn't very neat either...
>
> Is there actually >8-bit interlaced content out in the wild? I've never
> seen a single clip. If so where does it come from?
>
> Just curious
>
> JC
>
> >// Martin
>
Yes, just not in the consumer domain. In capture/production there is 10-bit
content.
Kieran
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^ permalink raw reply [flat|nested] 29+ messages in thread
end of thread, other threads:[~2023-07-04 10:26 UTC | newest]
Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-07-02 12:32 [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 01/15] avfilter/vf_bwdif: Add outline for aarch " John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 02/15] avfilter/vf_bwdif: Add common macros and consts for aarch64 neon John Cox
2023-07-02 21:04 ` Martin Storsjö
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 03/15] avfilter/vf_bwdif: Export C filter_intra John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 04/15] avfilter/vf_bwdif: Add neon for filter_intra John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 05/15] tests/checkasm: Add test for vf_bwdif filter_intra John Cox
2023-07-02 21:14 ` Martin Storsjö
2023-07-04 10:18 ` John Cox
2023-07-04 10:25 ` Kieran Kunhya
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 06/15] avfilter/vf_bwdif: Add clip and spatial macros for aarch64 neon John Cox
2023-07-02 14:02 ` Lynne
2023-07-02 14:09 ` Kieran Kunhya
2023-07-02 16:55 ` Lynne
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 07/15] avfilter/vf_bwdif: Export C filter_edge John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 08/15] avfilter/vf_bwdif: Add neon for filter_edge John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 09/15] tests/checkasm: Add test for vf_bwdif filter_edge John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 10/15] avfilter/vf_bwdif: Export C filter_line John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 11/15] avfilter/vf_bwdif: Add neon for filter_line John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 12/15] avfilter/vf_bwdif: Add a filter_line3 method for optimisation John Cox
2023-07-02 17:26 ` Thomas Mundt
2023-07-02 21:12 ` Martin Storsjö
2023-07-03 8:27 ` John Cox
2023-07-03 22:16 ` Thomas Mundt
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 13/15] avfilter/vf_bwdif: Add neon for filter_line3 John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 14/15] tests/checkasm: Add test for vf_bwdif filter_line3 John Cox
2023-07-02 12:32 ` [FFmpeg-devel] [PATCH v2 15/15] avfilter/vf_bwdif: Block filter slices into a multiple of 4 lines John Cox
2023-07-02 21:09 ` [FFmpeg-devel] [PATCH v2 00/15] avfilter/vf_bwdif: Add aarch64 neon functions Martin Storsjö
2023-07-03 8:44 ` John Cox
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