From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH v2 1/2] lavc/texturedsp: fix premult2straight inversion
Date: Fri, 2 Feb 2024 10:16:31 +0100
Message-ID: <AS8P250MB07445B0B2D9AC526A0C9873C8F422@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20240202094149.GB6092@haasn.xyz>
Niklas Haas:
> On Thu, 01 Feb 2024 17:10:50 -0800 Connor Worley <connorbworley@gmail.com> wrote:
>> + src[0] = (uint8_t) FFMIN(r * 255 / a, 255);
>> + src[1] = (uint8_t) FFMIN(g * 255 / a, 255);
>> + src[2] = (uint8_t) FFMIN(b * 255 / a, 255);
>
> av_clip_uint8?
That is for int values and therefore has to take care of negative values
as well. At least the C version is more complicated (i.e. the compiler
will have to work harder to optimize it to something like the above).
- Andreas
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next prev parent reply other threads:[~2024-02-02 9:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-02 1:10 Connor Worley
2024-02-02 1:10 ` [FFmpeg-devel] [PATCH v2 2/2] lavc/dxv: treat DXT5-tagged files as DXT4 Connor Worley
2024-02-02 8:41 ` [FFmpeg-devel] [PATCH v2 1/2] lavc/texturedsp: fix premult2straight inversion Niklas Haas
2024-02-02 9:16 ` Andreas Rheinhardt [this message]
2024-02-02 20:15 ` Connor Worley
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