This is what reference does.
Signed-off-by: Paul B Mahol <[email protected]>
---
libavfilter/vf_libvmaf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libavfilter/vf_libvmaf.c b/libavfilter/vf_libvmaf.c
index 249e50c720..e071df77c5 100644
--- a/libavfilter/vf_libvmaf.c
+++ b/libavfilter/vf_libvmaf.c
@@ -110,6 +110,7 @@ FRAMESYNC_DEFINE_CLASS(libvmaf, LIBVMAFContext, fs);
const type *main_ptr = (const type *) s->gmain->data[0];
\
\
float *ptr = ref_data;
\
+ float factor = 1.f / ((1 << bits) - 8);
\
\
int h = s->height;
\
int w = s->width;
\
@@ -118,7 +119,7 @@ FRAMESYNC_DEFINE_CLASS(libvmaf, LIBVMAFContext, fs);
\
for (i = 0; i < h; i++) {
\
for ( j = 0; j < w; j++) {
\
- ptr[j] = (float)ref_ptr[j];
\
+ ptr[j] = ref_ptr[j] * factor;
\
}
\
ref_ptr += ref_stride / sizeof(*ref_ptr);
\
ptr += stride / sizeof(*ptr);
\
@@ -128,7 +129,7 @@ FRAMESYNC_DEFINE_CLASS(libvmaf, LIBVMAFContext, fs);
\
for (i = 0; i < h; i++) {
\
for (j = 0; j < w; j++) {
\
- ptr[j] = (float)main_ptr[j];
\
+ ptr[j] = main_ptr[j] * factor;
\
}
\
main_ptr += main_stride / sizeof(*main_ptr);
\
ptr += stride / sizeof(*ptr);
\
--
2.17.1
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