Zhiming Wang ba2caf9d13
software::scaling::context::run: fix srcSliceH argument
Output height was erroneously used as the srcSliceH argument to
sws_scale, causing the output frame to be partially blank when scaling
down or outright erroring when scaling up. See documentation of sws_scale:

https://www.ffmpeg.org/doxygen/4.0/group__libsws.html#gae531c9754c9205d90ad6800015046d74

Fixes #18.
2020-07-23 10:01:19 +08:00
..
2020-05-31 13:34:24 +08:00