[07/36] package/celt051: new package

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
---
 package/multimedia/Config.in         |    1 +
 package/multimedia/celt051/Config.in |   15 +++++++++++++++
 package/multimedia/celt051/celt.mk   |   26 ++++++++++++++++++++++++++
 3 files changed, 42 insertions(+), 0 deletions(-)
 create mode 100644 package/multimedia/celt051/Config.in
 create mode 100644 package/multimedia/celt051/celt.mk

Le Mon, 13 Aug 2012 01:53:55 +0200,
"Yann E. MORIN" <yann.morin.1998@free.fr> a écrit :

> --- /dev/null
> +++ b/package/multimedia/celt051/Config.in
> @@ -0,0 +1,15 @@
> +config BR2_PACKAGE_CELT051
> +	bool "celt051"
> +	select BR2_PACKAGE_LIBOGG
> +	help
> +	  The CELT ultra-low delay audio codec

Just curious, for what reason an audio codec is needed as a dependency
of a virtual machine thing? How does it fit in the stack?

> +# Although version newer than 0.5.1.3 exists, we're
> +# stuck with 0.5.1.3 for use by Spice (coming later)

Do you predict this version requirement to be kept for a long period of
time?

Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Thomas, All,

On Friday 17 August 2012 13:18:18 Thomas Petazzoni wrote:
> Le Mon, 13 Aug 2012 01:53:55 +0200,
> "Yann E. MORIN" <yann.morin.1998@free.fr> a écrit :
> 
> > --- /dev/null
> > +++ b/package/multimedia/celt051/Config.in
> > @@ -0,0 +1,15 @@
> > +config BR2_PACKAGE_CELT051
> > +	bool "celt051"
> > +	select BR2_PACKAGE_LIBOGG
> > +	help
> > +	  The CELT ultra-low delay audio codec
> 
> Just curious, for what reason an audio codec is needed as a dependency
> of a virtual machine thing? How does it fit in the stack?

celt-0.51 is a hard-depdency for Spice to encode the audio.
It's select-ed by BR2_PACKAGE_SPICE in a later patch.

Note that I added all new packages in a row, rather than add them just
prior to the requiring qemu feature. Should I re-order the series to make
the depedencies clearer?

> > +# Although version newer than 0.5.1.3 exists, we're
> > +# stuck with 0.5.1.3 for use by Spice (coming later)
> 
> Do you predict this version requirement to be kept for a long period of
> time?

Spice advertises that celt-051 is the only supported version because
later versions have changed too much and are thus not compatible.

I have absolutely no idea whther Spice will upgrade one day... :-/


> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Thanks!

Regards,
Yann E. MORIN.

Le Fri, 17 Aug 2012 15:27:29 +0200,
"Yann E. MORIN" <yann.morin.1998@free.fr> a écrit :

> > Just curious, for what reason an audio codec is needed as a dependency
> > of a virtual machine thing? How does it fit in the stack?
> 
> celt-0.51 is a hard-depdency for Spice to encode the audio.
> It's select-ed by BR2_PACKAGE_SPICE in a later patch.
> 
> Note that I added all new packages in a row, rather than add them just
> prior to the requiring qemu feature. Should I re-order the series to make
> the depedencies clearer?

No, I understood perfectly that celt was a dependency of spice. My
question was not Buildroot-specific: I was trying to understand
what Qemu/Spice had to do with an audio encoder.

> > Do you predict this version requirement to be kept for a long period of
> > time?
> 
> Spice advertises that celt-051 is the only supported version because
> later versions have changed too much and are thus not compatible.
> 
> I have absolutely no idea whther Spice will upgrade one day... :-/

Ah, ok, I just realized you named the package celt051 and not celt just
because of that. Ok, good.

Thomas

Thomas, All,

On Friday 17 August 2012 15:50:47 Thomas Petazzoni wrote:
> Le Fri, 17 Aug 2012 15:27:29 +0200,
> "Yann E. MORIN" <yann.morin.1998@free.fr> a écrit :
> 
> > > Just curious, for what reason an audio codec is needed as a dependency
> > > of a virtual machine thing? How does it fit in the stack?
> > 
> > celt-0.51 is a hard-depdency for Spice to encode the audio.
> > It's select-ed by BR2_PACKAGE_SPICE in a later patch.
> > 
> > Note that I added all new packages in a row, rather than add them just
> > prior to the requiring qemu feature. Should I re-order the series to make
> > the depedencies clearer?
> 
> No, I understood perfectly that celt was a dependency of spice. My
> question was not Buildroot-specific: I was trying to understand
> what Qemu/Spice had to do with an audio encoder.

Spice is a VNC-like solution, but specificaly designed for use by virtual
machine hypervisors. It can transport video and audio alike, and uses celt
to encode/decode the audio for sending over-the-wire.

I don't know why they choose celt instead of ogg or anything else,
except maybe that celt is developped to be really patent-unencumbered.

Regards,
Yann E. MORIN.