[bug#62477] [PATCH 3/6] gnu: Add libmixed.

[Sharlatan Hellseher <sharlatanus@gmail.com>]

* gnu/packages/audio.scm (libmixed): New variable.
---
 gnu/packages/audio.scm | 52 +++++++++++++++++++++++++++++++++++++++---
 1 file changed, 49 insertions(+), 3 deletions(-)

diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 6f3fa2a580..043c608ea4 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -42,6 +42,7 @@
 ;;; Copyright © 2022 Andy Tai <atai@atai.org>
 ;;; Copyright © 2023 Sergiu Ivanov <sivanov@colimite.fr>
 ;;; Copyright © 2023 David Thompson <dthompson2@worcester.edu>
+;;; Copyright © 2023 Sharlatan Hellseher <sharlatanus@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -66,8 +67,8 @@ (define-module (gnu packages audio)
   #:use-module (gnu packages backup)
   #:use-module (gnu packages base)
   #:use-module (gnu packages bison)
-  #:use-module (gnu packages build-tools)
   #:use-module (gnu packages boost)
+  #:use-module (gnu packages build-tools)
   #:use-module (gnu packages check)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages curl)
@@ -86,6 +87,7 @@ (define-module (gnu packages audio)
   #:use-module (gnu packages gnome)
   #:use-module (gnu packages gnunet) ; libmicrohttpd
   #:use-module (gnu packages gperf)
+  #:use-module (gnu packages graphviz)
   #:use-module (gnu packages groff)
   #:use-module (gnu packages gstreamer)
   #:use-module (gnu packages gtk)
@@ -95,6 +97,7 @@ (define-module (gnu packages audio)
   #:use-module (gnu packages libbsd)
   #:use-module (gnu packages libffi)
   #:use-module (gnu packages libusb)
+  #:use-module (gnu packages linphone)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages llvm)
   #:use-module (gnu packages machine-learning)
@@ -120,8 +123,6 @@ (define-module (gnu packages audio)
   #:use-module (gnu packages serialization)
   #:use-module (gnu packages sqlite)
   #:use-module (gnu packages telephony)
-  #:use-module (gnu packages linphone)
-  #:use-module (gnu packages linux)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages valgrind)
   #:use-module (gnu packages video)
@@ -4019,6 +4020,51 @@ (define-public wavpack
 encode and decode wavpack files.")
     (license license:bsd-3)))
 
+(define-public libmixed
+  ;; Release is much outdated.
+  (let ((commit "91e6b9f2438bca41205fade02c9d8f4f938838b6")
+        (revision "0"))
+    (package
+      (name "libmixed")
+      (version (git-version "2.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/Shirakumo/libmixed")
+               (commit commit)))
+         (file-name (git-file-name "libmixed" version))
+         (sha256
+          (base32 "01vwgv8ivpg7a4y95krkgh656mmklsn1k3fmhwp474aj82grd3m4"))))
+      (build-system cmake-build-system)
+      (arguments
+       (list
+        ;; FIXME: (Sharlatan-20230326T121542+0100): Tests failed 1/34, 1 failed,
+        ;; 33 passed. There is not simple way to disable just one test.
+        ;; https://github.com/Shirakumo/libmixed/issues/13
+        #:tests? #f
+        #:configure-flags
+        #~(list "-DCMAKE_CXX_FLAGS=-O3 -fPIC"
+                "-DCMAKE_C_FLAGS=-O3 -fPIC")
+        #:phases
+        #~(modify-phases %standard-phases
+            (add-after 'unpack 'fix-paths
+              (lambda _
+                (substitute* "CMakeLists.txt"
+                  (("/usr/local") #$output))))
+            (replace 'check
+              (lambda* (#:key tests? #:allow-other-keys)
+                (when tests?
+                  (invoke "./tester")))))))
+      (native-inputs (list doxygen graphviz))
+      (inputs (list ncurses mpg123))
+      (home-page "https://github.com/Shirakumo/libmixed")
+      (synopsis "Low-level audio mixer pipeline library")
+      (description
+       "Libmixed is a library for real-time audio processing pipelines for use in
+audio/video/games.  It can serve as a base architecture for complex DSP systems.")
+      (license license:zlib))))
+
 (define-public libmodplug
   (package
     (name "libmodplug")
-- 
2.39.2