Re: [DirectPython] Examples

[Heikki S. <ho...@gm...>]

=20
> -----Original Message-----
> From: dir...@li...=20
> [mailto:dir...@li...]=20
> On Behalf Of Jeffrey Barish
> Sent: 11. hein=E4kuuta 2006 20:39
> To: dir...@li...
> Subject: Re: [DirectPython] Examples
>=20
> On Tuesday 11 July 2006 08:45, Heikki Salo wrote:
> > There are currently only two samples that use sounds:=20
> > sampleShipEffects.py uses the d3d.Sound (with 3D effect in newer=20
> > versions) and samplewx.py uses the d3d.Media. The objects=20
> are pretty=20
> > simple to use, so there really is not that much to show.
> >
> > The Media-object (uses DirectShow) can play pretty much anything if=20
> > corrent codecs (or filters) are registered. Sound (uses=20
> DirectSound)=20
> > can only play .wav files. Googling for "directshow filter/codec=20
> > <wanted format>" will probably find quite a few of them. The codecs=20
> > are usually .exe-files that will register themself when installed.=20
> > After this the Media should be able to play the formats=20
> that the codec supports.
> >
> > There are some bad codecs out there, so if possible try to get some=20
> > information about them. Also note that .mp3 (and some other formats=20
> > too) is supported directly by the DirectShow so there is usually no=20
> > need to install any codecs in order to play them.
> >
> > --
> > Heikki Salo
> Thank you for your quick response.
>=20
> I found sampleShipEffects.py.  Emulating the code therein for=20
> playing a sound, I tried:
>=20
> >>> import d3d
> >>> snd =3D d3d.Sound(u'c:/windows/media/tada.wav', True)
> Traceback (most recent call last):
>   File "<pyshell#1>", line 1, in ?
>     snd =3D d3d.Sound(u'c:/windows/media/tada.wav', True)
> Error: An invalid parameter was passed to the returning function
>=20

Sound needs an active focus window. d3d.showWindow(SHOW.SHOW) or
d3d.createDevice() will create one. And you can remove the second =
argument
if you are not playing 3D sounds, it might help.=20

Media can play sounds (.wav is ok) without a visible window, so call
d3d.showWindow(SHOW.HIDE) before creating the Media-object and you =
should be
able to play them. This is probably the better way.


> Also, when I try to run sampleShipEffects, it fails with:
>=20
> Traceback (most recent call last):
>   File=20
> "C:\Python24\Lib\site-packages\directpy\samples\sampleShipEffects.py",
> line 156, in ?
>     frame =3D SceneSample2(u"Ship and effects")
>   File "C:\Python24\lib\site-packages\directpy\d3dx.py", line=20
> 572, in __init__
>     fullscreen, CREATE.HARDWARE)
> RuntimeError: Failed to create a device
>=20

You probably have a pretty old (or maybe some cheap integrated) =
card/driver.
Try to replace HARDWARE with SOFTWARE. If that fails, try with "SOFTWARE =
|
NOCAPCHECK" (an old version of DP had a bug in the detection code which
might cause this, but it has been already fixed in newer releases).

> I found an ogg decoder at Free-Codecs.com (which seems=20
> actually to be from illiminable).  I have installed it, so I=20
> hope that once I get past these startup glitches, I will be=20
> able to play an ogg file using DirectPython.
>=20

I have played .ogg's with DirectPython, so that should not be a problem.

> Also, where do I find documentation for the DirectSound and=20
> DirectShow sound-related objects?  Besides playing a sound=20
> file, there are few more functions that I need: I need to be=20
> able to get the current position (time) of playback while a=20
> sound file is playing.  I need to be able to specify a=20
> starting time for play.  And I need to be able to stop (or=20
> pause) playback. =20
> Are those operations possible with DirectX?
>=20

The documentation can be accessed through the shortcut placed somewhere =
in
your Start-menu (DirectPython -> Documentation). And yes, you should be =
able
to do those things with d3d.Media.

--
Heikki Salo

> In case it matters, I am on Windows XP running Python 2.4.3.
> --
> Jeffrey Barish
>=20
>=20
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