Re: [FFmpeg-devel] [PATCH] avcodec/x86/hevc: fix luma 12b overflow

From: "Ronald S. Bultje" <rsbultje@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/x86/hevc: fix luma 12b overflow
Date: Sun, 25 Feb 2024 11:24:26 -0500
Message-ID: <CAEEMt2ke8EGaB8mbfMADLTGW2wiy7to2icEyFrSif++BCQY7cA@mail.gmail.com> (raw)
In-Reply-To: <CAEEMt2nLXPTGdv8j+1SKNBAgWy-G4PaFkSqd7ZzNLiG4iAHO8g@mail.gmail.com>

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Hi,

On Sun, Feb 25, 2024 at 11:22 AM Ronald S. Bultje <rsbultje@gmail.com>
wrote:

>
>
> On Sun, Feb 25, 2024 at 10:56 AM Ronald S. Bultje <rsbultje@gmail.com>
> wrote:
>
>> Hi,
>>
>> On Sun, Feb 25, 2024 at 3:28 AM J. Dekker <jdek@itanimul.li> wrote:
>>
>>> Weak filter can overflow in delta0 calculation before >> 4 in int16.
>>>
>>> Signed-off-by: J. Dekker <jdek@itanimul.li>
>>> ---
>>>
>>>  I do not know x86 simd at all, so this is just an attempt to fix
>>>  the implementation rather than write extremely performant code.
>>>
>>>  Suggestions welcome.
>>>
>>
>> https://pastebin.com/KvcbQ2nK
>>
>
> Attached a slightly adjusted version which does sse2 in 16bit also.
>

And now without typos and whitespace changes.

Ronald

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