[Fwd: use new API ?]

[Fwd: use new API ?]

[Florian Bomers]

Please apologize for the repetition of my question. I probably don't have to
tell you that in commercial software engineering I have to deal with hard
dead-lines and longer development and test cycles. I guess most of you don't
even care... but I think it would be a pity for many people if Sun's Java still
wouldn't support ALSA in the next years, just because I did not choose the
0.9.0-compatible way.

If there are other reasons why answers were pretty rare to my following
question, please tell me. Being a OSS developer myself I know that commitment is
unpopular (and "urgent" requests even more so), but then I'd appreciate at least
to hear that you don't have any plans for 0.9.0rc5's compatibility with future
versions.

--------

Is it more likely that 

1) the already changed function prototypes, which are usable 
  by defining ALSA_PCM_NEW_HW_PARAMS_API, change in future,
or
2) that the deprecated functions will be removed ?

I am talking here e.g. of  snd_pcm_hw_params_get_period_size()

Are there any incompatibilities likely from 0.9.0rc5 to 0.9.0FCS ?

Thanks,
Florian



-------- Original Message --------
Subject: [Alsa-devel] save to use new API ?
Date: Mon, 04 Nov 2002 11:38:41 -0800
From: Florian Bomers <Florian.Bomers@Sun.COM>
Organization: Sun Microsystems, Inc.
To: ALSA devel <alsa-devel@lists.sourceforge.net>

Hi,

if I released a program now in binary form, is it safer to use the new function
prototypes of alsa-lib by defining ALSA_PCM_NEW_HW_PARAMS_API or better use the
old, deprecated ones ?

My program compiles with or without, and I'd prefer to use the new API, but I
noticed that when I compile against rc5, it doesn't even run with rc4, so I fear
that my binary compiled against rc5 won't run with later versions of ALSA lib.

Thanks for letting me know.
Florian

-- 
Florian Bomers
Java Sound
Java Software/Sun Microsystems, Inc.
http://java.sun.com/products/java-media/sound/


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Re: [Fwd: use new API ?]

[Jaroslav Kysela]

On Mon, 11 Nov 2002, Florian Bomers wrote:

> Please apologize for the repetition of my question. I probably don't have to
> tell you that in commercial software engineering I have to deal with hard
> dead-lines and longer development and test cycles. I guess most of you don't
> even care... but I think it would be a pity for many people if Sun's Java still
> wouldn't support ALSA in the next years, just because I did not choose the
> 0.9.0-compatible way.
> 
> If there are other reasons why answers were pretty rare to my following
> question, please tell me. Being a OSS developer myself I know that commitment is
> unpopular (and "urgent" requests even more so), but then I'd appreciate at least
> to hear that you don't have any plans for 0.9.0rc5's compatibility with future
> versions.
> 
> --------
> 
> Is it more likely that 
> 
> 1) the already changed function prototypes, which are usable 
>   by defining ALSA_PCM_NEW_HW_PARAMS_API, change in future,

If you use this define, your application will work with next major ALSA 
release (probably 1.0). Note that we have also ALSA_PCM_NEW_SW_PARAMS_API.

> or
> 2) that the deprecated functions will be removed ?

Yes, we'll remove deprecated functions, but not for 0.9.

> I am talking here e.g. of  snd_pcm_hw_params_get_period_size()
> 
> Are there any incompatibilities likely from 0.9.0rc5 to 0.9.0FCS ?

I hope that this change was the last change before 0.9.0final, but as you 
seen, we are trying to retain compatibility. So, old programs will work 
with newer ALSA libraries (at least for major ALSA releases) - note that 
it does not work in opposite way - programs linked with newer libraries 
can have trouble with older libraries.

I am sorry for late reply.

						Jaroslav

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs



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Re: [Fwd: use new API ?]

[Florian Bomers]

That's useful and very promising news! Thank you very much.

Florian


Jaroslav Kysela wrote:
> > Is it more likely that
> >
> > 1) the already changed function prototypes, which are usable
> >   by defining ALSA_PCM_NEW_HW_PARAMS_API, change in future,
> 
> If you use this define, your application will work with next major ALSA
> release (probably 1.0). Note that we have also ALSA_PCM_NEW_SW_PARAMS_API.
> 
> > or
> > 2) that the deprecated functions will be removed ?
> 
> Yes, we'll remove deprecated functions, but not for 0.9.
> 
> > I am talking here e.g. of  snd_pcm_hw_params_get_period_size()
> >
> > Are there any incompatibilities likely from 0.9.0rc5 to 0.9.0FCS ?
> 
> I hope that this change was the last change before 0.9.0final, but as you
> seen, we are trying to retain compatibility. So, old programs will work
> with newer ALSA libraries (at least for major ALSA releases) - note that
> it does not work in opposite way - programs linked with newer libraries
> can have trouble with older libraries.
> 
> I am sorry for late reply.
> 
>                                                 Jaroslav
> 
> -----
> Jaroslav Kysela <perex@suse.cz>
> Linux Kernel Sound Maintainer
> ALSA Project, SuSE Labs
> 
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> Welcome to geek heaven.
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> Alsa-devel mailing list
> Alsa-devel@lists.sourceforge.net
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-- 
Florian Bomers
Java Sound
Java Software/Sun Microsystems, Inc.
http://java.sun.com/products/java-media/sound/


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