[FFmpeg-cvslog] libswscale: Test AV_CPU_FLAG_SLOW_GATHER for hscale functions.
Alan Kelly
git at videolan.org
Tue Dec 21 22:56:22 EET 2021
ffmpeg | branch: master | Alan Kelly <alankelly-at-google.com at ffmpeg.org> | Mon Dec 20 15:45:45 2021 +0100| [eebe406c808e6061ee76e93a616537b5369dbf40] | committer: James Almer
libswscale: Test AV_CPU_FLAG_SLOW_GATHER for hscale functions.
This is instead of EXTERNAL_AVX2_FAST so that the avx2 hscale functions
are only used where they are faster.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=eebe406c808e6061ee76e93a616537b5369dbf40
---
libswscale/utils.c | 2 +-
libswscale/x86/swscale.c | 2 +-
tests/checkasm/sw_scale.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/libswscale/utils.c b/libswscale/utils.c
index d4a72d3ce1..7158384f0b 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -282,7 +282,7 @@ void ff_shuffle_filter_coefficients(SwsContext *c, int *filterPos, int filterSiz
#if ARCH_X86_64
int i, j, k, l;
int cpu_flags = av_get_cpu_flags();
- if (EXTERNAL_AVX2_FAST(cpu_flags)){
+ if (EXTERNAL_AVX2_FAST(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER)) {
if ((c->srcBpc == 8) && (c->dstBpc <= 14)){
if (dstW % 16 == 0){
if (filter != NULL){
diff --git a/libswscale/x86/swscale.c b/libswscale/x86/swscale.c
index c49a05c37b..ffc7691c12 100644
--- a/libswscale/x86/swscale.c
+++ b/libswscale/x86/swscale.c
@@ -578,7 +578,7 @@ switch(c->dstBpc){ \
break; \
}
- if (EXTERNAL_AVX2_FAST(cpu_flags)) {
+ if (EXTERNAL_AVX2_FAST(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER)) {
if ((c->srcBpc == 8) && (c->dstBpc <= 14)) {
if (c->chrDstW % 16 == 0)
ASSIGN_AVX2_SCALE_FUNC(c->hcScale, c->hChrFilterSize);
diff --git a/tests/checkasm/sw_scale.c b/tests/checkasm/sw_scale.c
index f4912e6c2c..3c0a083b42 100644
--- a/tests/checkasm/sw_scale.c
+++ b/tests/checkasm/sw_scale.c
@@ -217,7 +217,7 @@ static void check_hscale(void)
}
ff_sws_init_scale(ctx);
memcpy(filterAvx2, filter, sizeof(uint16_t) * (SRC_PIXELS * MAX_FILTER_WIDTH + MAX_FILTER_WIDTH));
- if (cpu_flags & AV_CPU_FLAG_AVX2)
+ if ((cpu_flags & AV_CPU_FLAG_AVX2) && !(cpu_flags & AV_CPU_FLAG_SLOW_GATHER))
ff_shuffle_filter_coefficients(ctx, filterPosAvx, width, filterAvx2, SRC_PIXELS);
if (check_func(ctx->hcScale, "hscale_%d_to_%d_width%d", ctx->srcBpc, ctx->dstBpc + 1, width)) {
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