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From: Timo Rothenpieler <timo@rothenpieler.org>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH v6] avcodec/mfenc: Dynamically load MFPlat.DLL
Date: Wed, 25 May 2022 23:16:36 +0200
Message-ID: <aade24ab-9bcb-aefc-28c0-7c7a39ae3bb8@rothenpieler.org> (raw)
In-Reply-To: <69c2ee3d-eec6-89f5-fa18-253b9314c9e@martin.st>

On 25/05/2022 22:51, Martin Storsjö wrote:
> On Wed, 25 May 2022, Trystan Mata wrote:
> 
>> Changes since the v5:
>>  - Library handle and function pointer are back in MFContext.
>>    - MFTEnumEx has been move to it too.
>>  - dlopen and dlclose are preferred.
>>
>> This will avoid multiple look up on one context. And each context will
>> have his own library handle.
> 
> Thanks, this looks mostly good to me!
> 
> In testing of it, I noted that you still need to link against -lmfuuid 
> when building with MSVC (but in mingw, those UUIDs are defined inline in 
> headers I think).
> 
> Additionally, I realized I do prefer to keep using plain LoadLibraryA 
> and FreeLibrary instead of using the wrapper, as this file is all quite 
> Windows specific code; using the direct Windows APIs makes it clearer 
> what's going on.

There is quite a bit of work put into the wrapper to eliminate a bunch 
of common attack vectors with LoadLibrary and pitfalls with it on Windows.
So I'd strongly recommend to use it.
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  reply	other threads:[~2022-05-25 21:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-25 10:54 Trystan Mata
2022-05-25 20:51 ` Martin Storsjö
2022-05-25 21:16   ` Timo Rothenpieler [this message]
2022-05-25 21:34     ` Martin Storsjö
2022-05-26  6:34 ` Trystan Mata

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