From: Andrew Sayers <ffmpeg-devel@pileofstuff.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] lavu/opt: Mention that AVOptions is not reentrant
Date: Wed, 5 Jun 2024 14:43:50 +0100
Message-ID: <ZmBrlbeg4okzxSgP@andrews-2024-laptop.sayers> (raw)
In-Reply-To: <CAPYw7P41vcyUSMYnJNAiVgDF0-Zobr3m+G-dAGz-KFt9RWG_GQ@mail.gmail.com>
On Wed, Jun 05, 2024 at 03:34:50PM +0200, Paul B Mahol wrote:
> On Wed, Jun 5, 2024 at 3:18 PM Andrew Sayers <ffmpeg-devel@pileofstuff.org>
> wrote:
>
> > An external API developer might think they can use AVOptions to modify
> > values
> > during playback (e.g. putting a playback quality slider next to the volume
> > slider). Make it clear that behaviour is not recommended.
> >
>
> There are options that can be changed at runtime,
> And it works just fine.
How would an external developer know which options can be safely changed
(preferably including in future versions of FFmpeg) vs. ones where their tests
got lucky and happened not to trigger a read during a non-atomic write?
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next prev parent reply other threads:[~2024-06-05 13:44 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-05 13:18 Andrew Sayers
2024-06-05 13:34 ` Paul B Mahol
2024-06-05 13:43 ` Andrew Sayers [this message]
2024-06-05 13:46 ` Ronald S. Bultje
2024-06-05 14:22 ` Andrew Sayers
2024-06-05 23:17 ` Michael Niedermayer
2024-06-06 8:29 ` Andrew Sayers
2024-06-06 14:24 ` Michael Niedermayer
2024-06-06 15:16 ` Andrew Sayers
2024-06-06 15:21 ` Andreas Rheinhardt
2024-06-06 15:43 ` Andrew Sayers
2024-06-05 13:50 ` Paul B Mahol
2024-06-06 16:02 ` [FFmpeg-devel] [PATCH v2] lavu/opt: Discuss AV_OPT_FLAG_RUNTIME_PARAM more explicitly Andrew Sayers
2024-06-16 16:04 ` Stefano Sabatini
2024-06-16 17:08 ` [FFmpeg-devel] [PATCH v3 0/3] s/RUNTIME/POST_INIT_SETTABLE/ Andrew Sayers
2024-06-16 17:08 ` [FFmpeg-devel] [PATCH v3 1/3] lavu/opt: Rename AV_OPT_FLAG_RUNTIME_PARAM to ...POST_INIT_SETTABLE_PARAM Andrew Sayers
2024-07-01 22:33 ` Stefano Sabatini
2024-07-02 3:58 ` Zhao Zhili
2024-07-06 9:47 ` Stefano Sabatini
2024-07-02 9:08 ` [FFmpeg-devel] [PATCH v4 0/3] s/RUNTIME/POST_INIT_SETTABLE/ Andrew Sayers
2024-07-02 9:08 ` [FFmpeg-devel] [PATCH v4 1/3] lavu/opt: Rename AV_OPT_FLAG_RUNTIME_PARAM to ...POST_INIT_SETTABLE_PARAM Andrew Sayers
2024-07-02 9:49 ` Anton Khirnov
2024-07-06 9:50 ` Stefano Sabatini
2024-07-02 9:08 ` [FFmpeg-devel] [PATCH v4 2/3] lavu/opt: Mention AV_OPT_FLAG_POST_INIT_SETTABLE_PARAM in more places Andrew Sayers
2024-07-02 9:52 ` Anton Khirnov
2024-07-02 10:13 ` Andrew Sayers
2024-07-02 10:16 ` Anton Khirnov
2024-07-02 10:49 ` Andrew Sayers
2024-07-02 9:08 ` [FFmpeg-devel] [PATCH v4 3/3] all: s/AV_OPT_FLAG_RUNTIME_PARAM/AV_OPT_FLAG_POST_INIT_SETTABLE_PARAM/g Andrew Sayers
2024-07-06 9:37 ` [FFmpeg-devel] [PATCH v4 0/3] s/RUNTIME/POST_INIT_SETTABLE/ Stefano Sabatini
2024-07-06 10:40 ` Paul B Mahol
2024-07-06 16:49 ` Michael Niedermayer
2024-07-06 18:03 ` Andrew Sayers
2024-07-06 10:41 ` Andrew Sayers
2024-06-16 17:08 ` [FFmpeg-devel] [PATCH v3 2/3] lavu/opt: Mention AV_OPT_FLAG_POST_INIT_SETTABLE_PARAM in more places Andrew Sayers
2024-06-16 17:08 ` [FFmpeg-devel] [PATCH v3 3/3] all: s/AV_OPT_FLAG_RUNTIME_PARAM/AV_OPT_FLAG_POST_INIT_SETTABLE_PARAM/g Andrew Sayers
2024-06-16 17:22 ` [FFmpeg-devel] [PATCH v3 0/3] s/RUNTIME/POST_INIT_SETTABLE/ Paul B Mahol
2024-07-01 22:26 ` Stefano Sabatini
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