nongnu: Add obs-ndi.

* nongnu/packages/video.scm (obs-ndi): New variable.

nongnu/packages/video.scm

@@ -3,6 +3,7 @@
 ;;; Copyright © 2024 Oleg Pykhalov <go.wigust@gmail.com>
 
 (define-module (nongnu packages video)
+  #:use-module (gnu packages)
   #:use-module (gnu packages avahi)
   #:use-module (gnu packages base)
   #:use-module (gnu packages bash)
@@ -11,6 +12,7 @@
   #:use-module (gnu packages gawk)
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages qt)
   #:use-module (gnu packages video)
   #:use-module (guix build utils)
   #:use-module (guix build-system cmake)
@@ -282,3 +284,53 @@ Once you have downloaded the file, re-run the installation.")
     (license
      (nonguix-license:nonfree
       "https://downloads.ndi.tv/SDK/NDI_SDK/NDI%20License%20Agreement.pdf"))))
+
+(define-public obs-ndi
+  (package
+    (name "obs-ndi")
+    (version "4.11.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/DistroAV/DistroAV")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1wsb1k0jilcn6gqgpq5kq8hjiwnb6mi2w32fsqgb88iicwj1qa3y"))
+              (patches (append (search-patches "obs-ndi-hardcode-path.patch")))))
+    (build-system cmake-build-system)
+    (inputs (list ndi obs qtbase-5))
+    (arguments
+     (list
+      #:tests? #f ;no tests
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-before 'configure 'ndi
+            (lambda* (#:key inputs #:allow-other-keys)
+              (let ((ndi #$(this-package-input "ndi")))
+                (substitute* "src/obs-ndi.cpp"
+                  (("@NDI@") ndi))
+                (delete-file-recursively "lib/ndi")
+                (symlink (string-append ndi "/include")
+                         "lib/ndi"))))
+          (add-after 'install 'obs-plugins
+            (lambda* (#:key outputs #:allow-other-keys)
+              (mkdir-p (string-append #$output "/lib/obs-plugins"))
+              (symlink
+               (string-append #$output
+                              "/obs-plugins/64bit/obs-ndi.so")
+               (string-append #$output
+                              "/lib/obs-plugins/obs-ndi.so")))))))
+    (home-page "https://github.com/DistroAV/DistroAV")
+    (synopsis "Network Audio/Video in OBS-Studio using NDI technology")
+    (description "This packages provides a network A/V plugin for OBS Studio.
+
+Features:
+@itemize
+@item NDI Source: Receive NDI video and audio in OBS.
+@item NDI Output: Transmit OBS video and audio to NDI.
+@item NDI Filter (a.k.a. NDI Dedicated Output): Transmit a single OBS source
+or scene audio to NDI.
+@end itemize\n")
+    (license license:gpl2)))

obs-ndi-hardcode-path.patch

@@ -0,0 +1,14 @@
+--- a/src/obs-ndi.cpp	1970-01-01 03:00:01.000000000 +0300
++++ b/src/obs-ndi.cpp	2024-08-04 03:58:33.271766959 +0300
+@@ -229,10 +229,7 @@
+ 	if (!path.isEmpty()) {
+ 		locations << path;
+ 	}
+-#if defined(__linux__) || defined(__APPLE__)
+-	locations << "/usr/lib";
+-	locations << "/usr/local/lib";
+-#endif
++	locations << "@NDI@/lib";
+ 	for (QString location : locations) {
+ 		path = QDir::cleanPath(
+ 			QDir(location).absoluteFilePath(NDILIB_LIBRARY_NAME));