[bug#40307] gnu: packages: telephony: Add spandsp

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hello again :-)

"Raghav Gururajan" <raghavgururajan@disroot.org> writes:

> Hello Guix!
>
> Please find the attached patch to add "spandsp" package.
>
> Regards,
> RG.
>
> From 68e093007f2c5678895a5cbe29f2b1ac2c357ba2 Mon Sep 17 00:00:00 2001
> From: Raghav Gururajan <raghavgururajan@disroot.org>
> Date: Sat, 28 Mar 2020 23:32:57 -0400
> Subject: [PATCH 13/13] gnu: packages: telephony: Add spandsp

This prefix also need to be adjusted to just "gnu: Add ...".

> * gnu/packages/telephony.scm (spandsp): New variable.
> ---
>  gnu/packages/telephony.scm | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
>
> diff --git a/gnu/packages/telephony.scm b/gnu/packages/telephony.scm
> index fe6c230693..c68f80669c 100644
> --- a/gnu/packages/telephony.scm
> +++ b/gnu/packages/telephony.scm
> @@ -52,6 +52,7 @@
>    #:use-module (gnu packages gnome)
>    #:use-module (gnu packages gnupg)
>    #:use-module (gnu packages gtk)
> +  #:use-module (gnu packages image)
>    #:use-module (gnu packages libcanberra)
>    #:use-module (gnu packages linux)
>    #:use-module (gnu packages multiprecision)
> @@ -84,6 +85,35 @@
>    #:use-module (guix build-system gnu)
>    #:use-module (guix build-system qt))
>  
> +(define-public spandsp
> + (package
> +  (name "spandsp")
> +  (version "0.0.6")
> +  (source
> +   (origin
> +    (method url-fetch)
> +    (uri
> +     (string-append "https://www.soft-switch.org/downloads/" name "/"
> +                    name "-" version ".tar.gz"))
> +    (sha256
> +     (base32 "0rclrkyspzk575v8fslzjpgp4y2s4x7xk3r55ycvpi4agv33l1fc"))))
> + (build-system gnu-build-system)

The check phase doesn't seem to run anything; it just passes.  Perhaps
we don't start it the correct way?

> + (native-inputs
> +  `(("libtiff" ,libtiff)
> +    ("zlib" ,zlib)))
> + (synopsis "DSP library for telephony")
> + (description "SpanDSP is a library of DSP functions for telephony, in the 8000 sample
> +per second world of E1s, T1s, and higher order PCM channels.  It contains low level
> +functions, such as basic filters.  It also contains higher level functions, such as
> +cadenced supervisory tone detection, and a complete software FAX
> machine.")

This body of text is a bit too wide.  We limit our column width at 80
characters.  You can use M-q in Emacs to automatically re-flow the
paragraph.  I kind of like the concise description from Debian, because
it gives me a better idea of what the package can be used for: "SpanDSP
is a low-level signal processing library that modulate and demodulate
signals commonly used in telephony, such as the "noise" generated by a
fax modem or DTMF touchpad."

> + (home-page "https://www.soft-switch.org/index.html")
> + (license
> +  (list
> +   ;; For Library
> +   license:lgpl2.1+
> +   ;; For Test Suites and Support Programs
> +   license:gpl2+))))
> +

My preferred style for formatting the license list would be:

    (license (list license:lgpl2.1+  ;for the library
                   license:gpl2+)))) ;for the test suites and support programs


The indentation of the package is off.  Please use Emacs or the
indent-code.el script :-).

Maxim