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| author | Carl Hetherington <cth@carlh.net> | 2021-10-03 21:22:14 +0200 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2021-10-03 23:41:02 +0200 |
| commit | 969906f2dd6c5c144781861f53e2a0f6baefb9a3 (patch) | |
| tree | d4091610b2c0582f52a8d484fd7a36a9c4878111 /src/lib/pixel_quanta.cc | |
| parent | 70b72b53eab0f247eb4dc605a2d669d4adb4e469 (diff) | |
Don't scale chroma subsampled images to sizes that don't align with the subsampling (#1872).v2.15.166
There's a slightly odd effect when scaling e.g. YVU420 images to
odd and then even widths - there's a small but visible luminance
shift. I don't know why this happens, but keeping the scaling
sizes locked to the subsampling seems to help.
Diffstat (limited to 'src/lib/pixel_quanta.cc')
| -rw-r--r-- | src/lib/pixel_quanta.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/lib/pixel_quanta.cc b/src/lib/pixel_quanta.cc index 09e684064..7c1d285cf 100644 --- a/src/lib/pixel_quanta.cc +++ b/src/lib/pixel_quanta.cc @@ -53,6 +53,13 @@ PixelQuanta::round_y (int y_) const } +dcp::Size +PixelQuanta::round (dcp::Size size) const +{ + return dcp::Size (round_x(size.width), round_y(size.height)); +} + + PixelQuanta max (PixelQuanta const& a, PixelQuanta const& b) { |