On Tue, 20 Mar 2018, 16:31 Kieran Kunhya, <kier...@obe.tv> wrote:
> >
> > ticket #6265, oops forgot this
> >
>
> Can you confirm this makes the png in the ticket look as expected?
> I was expecting the companding curve to also change for alpha.
>
> Kieran
>
preserving the limits (max and min)
---
libavcodec/cfhd.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c
index d64acab8d4..a950dc0f28 100644
--- a/libavcodec/cfhd.c
+++ b/libavcodec/cfhd.c
@@ -103,6 +103,8 @@ static inline void process_alpha(int16_t *alpha, int
width)
channel <<= 8;
channel -= 128;
channel /= 223;
+ channel = FFMIN(channel, (1 << 12) - 1);
+ channel = FFMAX(channel, 0);
alpha[i] = channel;
}
}
--
2.14.1
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