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software::scaling::context::run: fix srcSliceH argument

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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.
This commit is contained in:
Zhiming Wang 2020-07-23 09:57:36 +08:00
parent 3e9c83ec4e
commit ba2caf9d13
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1 changed files with 1 additions and 1 deletions
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src/software/scaling/context.rs
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@ -154,7 +154,7 @@ impl Context {
(*input.as_ptr()).data.as_ptr() as *const *const _, (*input.as_ptr()).data.as_ptr() as *const *const _,
(*input.as_ptr()).linesize.as_ptr() as *const _, (*input.as_ptr()).linesize.as_ptr() as *const _,
0, 0,
self.output.height as c_int, self.input.height as c_int,
(*output.as_mut_ptr()).data.as_ptr() as *const *mut _, (*output.as_mut_ptr()).data.as_ptr() as *const *mut _,
(*output.as_mut_ptr()).linesize.as_ptr() as *mut _, (*output.as_mut_ptr()).linesize.as_ptr() as *mut _,
); );