[FFmpeg-devel] [PATCH 2/5] lavf/demux: treat EAGAIN as REDO unless AVFMT_FLAG_NONBLOCK is set

[Paul B Mahol]

On 11/10/22, Anton Khirnov <anton at khirnov.net> wrote:
> Quoting Michael Niedermayer (2022-11-10 13:28:27)
>> On Tue, Nov 08, 2022 at 12:25:47PM +0100, Anton Khirnov wrote:
>> > Lavf only supports a very limited approximation of non-blocking
>> > behavior, so we should not return random EAGAINs to callers unless they
>> > specifically requested it.
>> > ---
>> >  libavformat/demux.c | 8 ++++++--
>> >  1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> this changes seeking behavior of for example:
>> libavformat/tests/seek fate-suite/dss/sp.dss
>>
>> (this seemed to return EAGAIN before sometimes)
>
> Are you saying that is wrong? I don't see why seeks should return EAGAIN
> either.
>

It returns internally when passing seeking to generic seeking.
Please  do not break seeking in demuxers.

> --
> Anton Khirnov
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