Re: [h323plus] DirectShow support (was Problem with Logitech camera)

18 Jan 2008

      Hi, Simon:
First of all, thank you for your help. I summarize my
current status as follows:
1. If I download the latest version of PTLIb from SVN,
builds fine (i suppose that has DirectShow support
enabled for Windows native), But when I try to compile
H323PLus (either the official release or the one from
CVS) it gives me compile errors.
2. If I get the official release of PTLib (with
support for DirectShow only for MINGW), but "patched"
with the configure.ac file from the SVN, it compiles
and detects and enables DirectShow. I can also compile
both H323PLus (official) and Simple and MyPhone2. I've
also added the vidinput_directx.* to the PTLib Static
project, because they are not included by default. And
also, I've removed some __MINGW__ defines to allow the
DirectShow code to run in Windows native. All of this
seems to work fine. But when MyPhone2 or Simple tried
to open the Input Device, they cannot do it because in
the method PPluginManager::GetPluginsDeviceNames(),
the line PDevicePluginServiceDescriptor * descr =
(PDevicePluginServiceDescriptor
*)GetServiceDescriptor(serviceName, serviceType);
 always return NULL. It seems that I have to do
something more in order to register the DirectShow
video input device driver. doesn´t  it?
I know that all of this problems are due to my
"hacking" of the PTLib code to "force" DirectShow
support in Windows native. You said in a previous
message that you planned to release an official
version of PTLib with DirectShow support in Windows
native "in a couple of weeks". Do you think that is
better for me to wait for this official release? Are
you close to release that version?
BTW, I've managed to "fix" the CVideoOutputDevice in
MyPhone2 using code from PVideoOutputDevice_Window. It
works fine in CIF and QCIF, but I have to fix the
"PinP mode" for local video when using CIF. How could
I contribute this fix?
Best retgards,
--- Simon Horne s.horne@packetizer.com escribió:
...
Looks like some changes in ptlib and <ptlib/dshow.h>
no longer works.
Remove the line and see if the directshow video
input device is loaded.
Sometimes (and and for me it didn't automatically
load)
If not then add.
#include <ptlib/msos/ptlib/vidinput_directx.h>
which is what <ptlib/dshow.h> should be an alias for
Simon
  -----Original Message-----
  From: h323plus-bounces@lists.packetizer.com
[mailto:h323plus-bounces@lists.packetizer.com]On
Behalf Of JF NP
  Sent: Friday, January 18, 2008 1:58 AM
  To: h323plus@lists.packetizer.com
  Subject: [h323plus] DirectShow support (was
Problem with Logitech camera)
Hi,
I've downloaded the latest version of PTLib from
SVN and in fact, in configure.ac there is a section
about directshow. When I compile PTLib, configure
detects DirectShow support and enabled it. But my
problem is that when I try to compile Simple or
MyPhone2 to make tests, both fail because they have
an #include <ptlib/dshow.h>, and there is no such
header file. What am I doing wrong? Where can I
found that file?
BR,
----- Mensaje original ----
  De: Simon Horne s.horne@packetizer.com
  Para: JF NP jfnp090274@yahoo.es
  Enviado: martes, 15 de enero, 2008 23:06:55
  Asunto: RE: [h323plus] Problem with Logitech
camera
ï»¿ 
  Br
Unless there is an section in configure.ac in your
version of ptlib for diectshow I would not just
define it. Let configure find it if both pwlib
version supports it and it get detected. The
original version of directshow was only for mingw
however it has since been ported to VS and added to
the configure.ac to autodetect support.
  ====================
  Simon Horne
  email. s.horne@isvo.net
  Principal Maintainer
  h323plus Library
Consulting and Contracting
  consulting@h323plus.org.
  ========================
-----Original Message----
From: h323plus-bounces@lists.packetizer.com

[mailto:h323plus-bounces@lists.packetizer.com]On
Behalf Of JF NP
    Sent: Wednesday, January 16, 2008 3:33 AM
    To: H323plus
    Subject: Re: [h323plus] Problem with Logitech
camera
Hi,

Is it possible to have DirectShow enabled on

native Windows simply by defining P_DIRECTSHOW in
ptbuildopts.h? Is it necessary any other work?
Br,

----- Mensaje original ----
De: Simon Horne <s.horne@packetizer.com>
Para: JF NP <jfnp090274@yahoo.es>
CC: H323plus <h323plus@lists.packetizer.com>
Enviado: miÃ©rcoles, 9 de enero, 2008 19:29:51
Asunto: RE: [h323plus] Problem with Logitech

camera
I will try and have stable release out within

the next couple of weeks.
Simon

> -----Original Message-----
> From: h323plus-bounces@lists.packetizer.com
>

[mailto:h323plus-bounces@lists.packetizer.com]On
Behalf Of JF NP
    > Sent: Wednesday, January 09, 2008 11:35 PM
    > To: H323plus
    > Subject: Re: [h323plus] Problem with Logitech
camera
    >
    >
    > Hi, Simon:
    >
    > Do you know when will the next version (with
    > DirectShow support) be released?
    >
    > BR,
    >
    > --- Simon Horne s.horne@packetizer.com
escribiÃ³:
    >
    > >
    > > JP
    > >
    > > The problem is that not all windows webcams
are
    > > supported with the existing
    > > VideoForWindows. Directshow fixes that
unfortunately
    > > for pwlib 1.12 it is
    > > only available with mingw compilations for
windows.
    > > I have checked a bit of
    > > work to allow it to be compiled with Visual
Studio
    > > however that is in PTLib.
    > > Once we migrate to PTlib and release the
stable
    > > version of h323plus the
    > > problem should be rectified.
    > >
    > > Simon
    > >
    > > > -----Original Message-----
    > > > From:
h323plus-bounces@lists.packetizer.com
    > > >
[mailto:h323plus-bounces@lists.packetizer.com]On
    > > Behalf Of JF NP
    > > > Sent: Wednesday, January 09, 2008 8:00 PM
    > > > To: h323plus@lists.packetizer.com
    > > > Subject: [h323plus] Problem with Logitech
camera
    > > >
    > > >
    > > > Hi,
    > > >
    > > > I have a Logitech Communicate STX webcam,
but I
    > > cannot
    > > > make it work with h323plus. I've attached
a trace
    > > from
    > > > vidtest. Could anybody help me?
    > > > My computer runs Windows XP SP 2
(Spanish).
    > > >
    > > > Thanks in advance,
    > > >
    > > >
    > > >
    > > >
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