libavfilter/x86/vf_gblur: add ff_verti_slice_avx2/512()

The new vertical slice with AVX2/512 acceleration can significantly
improve the performance of Gaussian Filter 2D.

Performance data:
ff_verti_slice_c: 32.57
ff_verti_slice_avx2: 476.19
ff_verti_slice_avx512: 833.33

Co-authored-by: Cheng Yanfei <yanfei.cheng@intel.com>
Co-authored-by: Jin Jun <jun.i.jin@intel.com>
Signed-off-by: Wu Jianhua <jianhua.wu@intel.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/libavfilter/vf_gblur.c b/libavfilter/vf_gblur.c
index 4780bb6204..a2c410c07b 100644
--- a/libavfilter/vf_gblur.c
+++ b/libavfilter/vf_gblur.c
@@ -138,6 +138,19 @@ static void do_vertical_columns(float *buffer, int width, int height,
     }
 }
 
+static void verti_slice_c(float *buffer, int width, int height,
+                          int slice_start, int slice_end, int steps,
+                          float nu, float boundaryscale)
+{
+    int aligned_end = slice_start + (((slice_end - slice_start) >> 3) << 3);
+    /* Filter vertically along columns (process 8 columns in each step) */
+    do_vertical_columns(buffer, width, height, slice_start, aligned_end,
+                        steps, nu, boundaryscale, 8);
+    /* Filter un-aligned columns one by one */
+    do_vertical_columns(buffer, width, height, aligned_end, slice_end,
+                        steps, nu, boundaryscale, 1);
+}
+
 static int filter_vertically(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 {
     GBlurContext *s = ctx->priv;
@@ -150,16 +163,10 @@ static int filter_vertically(AVFilterContext *ctx, void *arg, int jobnr, int nb_
     const int steps = s->steps;
     const float nu = s->nuV;
     float *buffer = s->buffer;
-    int aligned_end;
 
-    aligned_end = slice_start + (((slice_end - slice_start) >> 3) << 3);
-    /* Filter vertically along columns (process 8 columns in each step) */
-    do_vertical_columns(buffer, width, height, slice_start, aligned_end,
-                        steps, nu, boundaryscale, 8);
+    s->verti_slice(buffer, width, height, slice_start, slice_end,
+                   steps, nu, boundaryscale);
 
-    /* Filter un-aligned columns one by one */
-    do_vertical_columns(buffer, width, height, aligned_end, slice_end,
-                        steps, nu, boundaryscale, 1);
     return 0;
 }
 
@@ -236,6 +243,7 @@ static int query_formats(AVFilterContext *ctx)
 void ff_gblur_init(GBlurContext *s)
 {
     s->horiz_slice = horiz_slice_c;
+    s->verti_slice = verti_slice_c;
     s->postscale_slice = postscale_c;
     if (ARCH_X86)
         ff_gblur_init_x86(s);