[MPlayer-dev-eng] Performance of libdvdread/libdvdcss

[Reimar Döffinger]

On Sat, Sep 01, 2012 at 12:25:43PM +0100, Vicente Sendra wrote:
> --- El sáb, 1/9/12, Reimar Döffinger <Reimar.Doeffinger at gmx.de> escribió:
> 
> > De: Reimar Döffinger <Reimar.Doeffinger at gmx.de>
> > Asunto: Re: [MPlayer-dev-eng] Performance of libdvdread/libdvdcss
> > Para: mplayer-dev-eng at mplayerhq.hu
> > Fecha: sábado, 1 de septiembre, 2012 12:15
> > On Sat, Sep 01, 2012 at 10:20:05AM
> > +0100, Vicente Sendra wrote:
> > > But we are doing things that we should not do, because
> > we are using both functions with the os file handle (ioct)
> > and functions with the C run-time file descriptor (read).
> > And this is a bad thing if we read this:
> > > http://support.microsoft.com/kb/99173/en-us
> > 
> > Reading Microsoft advices is usually useless because they
> > don't try to
> > put in enough information to allow you to understand it.
> > There's no reason why using (these kinds of) ioctls natively
> > and reads
> > through the libc interface should be an issue.
> > 
> > > I'm going to try the mixed solution, reading with
> > win2k, closing, then reading with libc with keys from
> > win2k.
> > 
> > Why don't you try the much easier approach of changing the
> > random access
> > flag first?
> > Whoever is going to review the patch is certain to ask you
> > _why_ it
> > makes a difference, and even if your approach works you'll
> > have a
> > very hard time figuring out why from there.
> 
> Sorry, i didn't say anything about that, but i tried both values (FILE_FLAG_SEQUENTIAL_SCAN and 0), and no difference was observed.
> 
> PS: Being used to visual studio and delphi, it's a real pain in the ass to go searching where is every function or struct declared. Do you know any IDE that can be used with MinGw that it's worth a try (and if possible free).

I don't use GUIs, so no personal opinions here - I assume you are not
considering vim + ctags.
But you can obviously use Visual Studio (configure it to call make as
build step for example), a lot of people use Eclipse and I heard some
claim they like Code::Blocks.