On Sat, Sep 06, 2014 at 08:24:10AM +0200, Reimar Döffinger wrote: > On 06.09.2014, at 00:23, wm4 <nfx...@googlemail.com> wrote: > > On Sat, 6 Sep 2014 00:00:10 +0200 > > Michael Niedermayer <michae...@gmx.at> wrote: > > > >> On Thu, Sep 04, 2014 at 10:40:27PM +0200, wm4 wrote: > >>> --- > >>> Follows reimar's suggestion for detecting UTF-16. If the detection goes > >>> wrong, probing the format won't succeed, so this should not break > >>> anything. > >>> > >> > >>> I didn't use ffio_ensure_seekback), because this apparently reallocates > >>> the buffer - which we certainly don't want, because the probe API > >>> doesn't allow this. > >> > >> the format probe API doesnt provide a AVIOContext, and if one is > >> provided, it could use a allocated and reallocatable buffer > >> or do i misunderstand ? > >> > >> [...] > > > > I'm ffio_init_context() to initialize an AVIOContext on a buffer (the > > probe buffer) > > I do not know the actual behaviour for sure, but for a context based on a > buffer, seekback should never ever be possible to fail... > So if we can detect that case, I think the ensure function should behave like > a NOP.
ffio_ensure_seekback() could check if AVIOContext.read_packet is set and return success if its not [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Democracy is the form of government in which you can choose your dictator
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
