Make horizontal_factor look the same as vertical_factor.

diff --git a/src/lib/image.cc b/src/lib/image.cc
index da1bb86ee36d7e592971a549480a4e2924e8e67c..92c1ab9a227575273641f4725552205d0697d885 100644 (file)
--- a/src/lib/image.cc
+++ b/src/lib/image.cc
@@ -68,15 +68,16 @@ Image::vertical_factor (int n) const
 int
 Image::horizontal_factor (int n) const
 {
-       int horizontal_factor = 1;
-       if (n > 0) {
-               AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (_pixel_format);
-               if (!d) {
-                       throw PixelFormatError ("sample_size()", _pixel_format);
-               }
-               horizontal_factor = pow (2.0f, d->log2_chroma_w);
+       if (n == 0) {
+               return 1;
+       }
+
+       AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+       if (!d) {
+               throw PixelFormatError ("sample_size()", _pixel_format);
        }
-       return horizontal_factor;
+
+       return pow (2.0f, d->log2_chroma_w);
 }
 
 /** @param n Component index.