From 1b4cc348d05677aa844a8c553d9242812dc6890d Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Thu, 20 Oct 2022 19:38:55 +0200
Subject: [PATCH] avfilter/vf_threshold: fix handling of zero threshold
Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
libavfilter/vf_threshold_init.h | 4 ++--
libavfilter/x86/vf_threshold.asm | 23 ++++++++---------------
2 files changed, 10 insertions(+), 17 deletions(-)
@@ -38,7 +38,7 @@ static void threshold8(const uint8_t *in, const uint8_t *threshold,
{
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++)
- out[x] = in[x] < threshold[x] ? min[x] : max[x];
+ out[x] = in[x] <= threshold[x] ? min[x] : max[x];
in += ilinesize;
threshold += tlinesize;
@@ -64,7 +64,7 @@ static void threshold16(const uint8_t *iin, const uint8_t *tthreshold,
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++)
- out[x] = in[x] < threshold[x] ? min[x] : max[x];
+ out[x] = in[x] <= threshold[x] ? min[x] : max[x];
in += ilinesize / 2;
threshold += tlinesize / 2;
@@ -22,15 +22,10 @@
%include "libavutil/x86/x86util.asm"
-SECTION_RODATA
-
-pb_128: times 16 db 128
-pb_128_0 : times 8 db 0, 128
-
SECTION .text
-;%1 depth (8 or 16) ; %2 b or w ; %3 constant
-%macro THRESHOLD 3
+;%1 depth (8 or 16) ; %2 b or w
+%macro THRESHOLD 2
%if ARCH_X86_64
cglobal threshold%1, 10, 13, 5, in, threshold, min, max, out, ilinesize, tlinesize, flinesize, slinesize, olinesize, w, h, x
mov wd, dword wm
@@ -45,7 +40,6 @@ cglobal threshold%1, 5, 7, 5, in, threshold, min, max, out, w, x
%define olinesizeq r9mp
%define hd r11mp
%endif
- VBROADCASTI128 m4, [%3]
%if %1 == 16
add wq, wq ; w *= 2 (16 bits instead of 8)
%endif
@@ -63,9 +57,8 @@ cglobal threshold%1, 5, 7, 5, in, threshold, min, max, out, w, x
movu m0, [thresholdq + xq]
movu m2, [minq + xq]
movu m3, [maxq + xq]
- pxor m0, m4
- pxor m1, m4
- pcmpgt%2 m0, m1
+ pminu%2 m0, m1
+ pcmpeq%2 m0, m1
PBLENDVB m3, m2, m0
movu [outq + xq], m3
add xq, mmsize
@@ -82,11 +75,11 @@ RET
%endmacro
INIT_XMM sse4
-THRESHOLD 8, b, pb_128
-THRESHOLD 16, w, pb_128_0
+THRESHOLD 8, b
+THRESHOLD 16, w
%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
-THRESHOLD 8, b, pb_128
-THRESHOLD 16, w, pb_128_0
+THRESHOLD 8, b
+THRESHOLD 16, w
%endif
--
2.37.2