[FFmpeg-devel] [PATCH] pthread: Fix?ff_thread_get_formatissues?when called outside frame decode.

Michael Niedermayer michaelni at gmx.at
Mon Mar 9 23:06:09 CET 2015

On Mon, Mar 09, 2015 at 06:38:18AM +0000, Rainer Hochecker wrote:
> Reimar Döffinger <Reimar.Doeffinger <at> gmx.de> writes:
> > 
> > Any reason to believe this patch causes it?
> > Because I can't see how it would.
> > Maybe it's just a bug with DXVA and multithreading in the HEVC code?
> > Can you provide some more information like a stacktrace, possibly using a
> tool like DrMemory?
> I don't think the patch itself is the root cause of the issue, it just
> triggers it. get_format is called 4 times, something seems to get corrupted
> in opening our hw decoder.
> Do you have an explanation why it works with thread_safe_callbacks set to 1?

> I am wondering if hevc misses the multithreading fix done for other codecs:
> http://ffmpeg.org/pipermail/ffmpeg-cvslog/2013-March/062620.html

from a quick look yes, this appears missing
can someone who can reprodeuce this problem test if adding such code
would fix it ? if yes please send a patch

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