RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2025-04-25 21:01:48 +00:00
Code Issues Releases Wiki Activity

vo_opengl: fancy-downscaling: enable also for anamorphic clips

Browse Source
This commit is contained in:
Avi Halachmi (:avih) 2015-08-10 03:57:53 +03:00 committed by wm4
parent 6bbb1e4cf9
commit 0062c98dff
2 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
DOCS/man/vo.rst
View File

@ -545,9 +545,9 @@ Available video output drivers are:
When using convolution based filters, extend the filter size When using convolution based filters, extend the filter size
when downscaling. Trades quality for reduced downscaling performance. when downscaling. Trades quality for reduced downscaling performance.
This is automatically disabled for anamorphic video, because this This will perform slightly sub-optimally for anamorphic video (but still
feature doesn't work correctly with different scale factors in better than without it) since it will extend the size to match only the
different directions. milder of the scale factors between the axes.
``prescale=<filter>`` ``prescale=<filter>``
This option provides non-convolution-based filters for upscaling. These This option provides non-convolution-based filters for upscaling. These

13
video/out/opengl/video.c
View File

@ -1592,11 +1592,16 @@ static void pass_scale_main(struct gl_video *p)
scaler = &p->scaler[1]; scaler = &p->scaler[1];
} }
double f = MPMIN(xy[0], xy[1]); // When requesting fancy-downscaling and the clip is anamorphic, and because
if (p->opts.fancy_downscaling && f < 1.0 && // only a single fancy scale factor is used for both axes, enable fancy only
fabs(xy[0] - f) < 0.01 && fabs(xy[1] - f) < 0.01) // when both axes are downscaled, and use the milder of the factors to not
// end up with too much blur on one axis (even if we end up with sub-optimal
// fancy factor on the other axis).
// This is better than not respecting fancy at all for anamorphic clips.
double f = MPMAX(xy[0], xy[1]);
if (p->opts.fancy_downscaling && f < 1.0)
{ {
scale_factor = FFMAX(1.0, 1.0 / f); scale_factor = 1.0 / f;
} }
// Pre-conversion, like linear light/sigmoidization // Pre-conversion, like linear light/sigmoidization