[FFmpeg-devel] [PATCH] lavc/libopenh264: Drop openh264 runtime version checks

[Kalev Lember]

On Fri, Dec 8, 2023 at 8:12 PM Cosmin Stejerean via ffmpeg-devel <
ffmpeg-devel at ffmpeg.org> wrote:

> As of what version of openh264 though is it safe to assume that ABI won't
> change without soname changes? Since years ago ABI changes without soname
> changes were present there's likely to be some minimum version above which
> runtime version checks are not needed.
>

I don't have a very good answer here, sorry. It was more of a general
observation that upstream is trying to keep the soname updated whenever
there is an ABI change.

However, if I had to pick a version, I did some digging and maybe version
1.3.0 because before that there was just an unversioned libopenh264.so, and
1.3.0 added an actual versioned libopenh264.so.0, which has been updated
since then whenever there have been ABI changes.

Do you guys want me to add a minimum 1.3.0 check?

Martin mentioned earlier that he once envisioned something like passing
-openh264_lib /path/to/my/libopenh264.so to ffmpeg and that must have been
before the versioned soname was introduced.

-- 
Kalev