1 files changed, 12 insertions, 0 deletions
diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
index bc446b1fab..d0889b4b38 100644
--- a/libavutil/pixdesc.c
+++ b/libavutil/pixdesc.c
@@ -1454,3 +1454,15 @@ enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
 
     return desc - av_pix_fmt_descriptors;
 }
+
+int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
+                                     int *h_shift, int *v_shift)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    if (!desc)
+        return AVERROR(ENOSYS);
+    *h_shift = desc->log2_chroma_w;
+    *v_shift = desc->log2_chroma_h;
+
+    return 0;
+}