>From e83b805f35c59f0b0ec9a6b97db7105b4ca773ac Mon Sep 17 00:00:00 2001
From: Raghav Gururajan <rg@raghavgururajan.name>
Date: Thu, 21 Jan 2021 19:28:34 -0500
Subject: [PATCH 14/18] gnu: Add tg-voip.

* gnu/packages/telegram.scm (tg-voip): New variable.
---
 gnu/packages/telegram.scm | 52 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/gnu/packages/telegram.scm b/gnu/packages/telegram.scm
index e518a8dcd3..f47c82277c 100644
--- a/gnu/packages/telegram.scm
+++ b/gnu/packages/telegram.scm
@@ -19,6 +19,7 @@
 (define-module (gnu packages telegram)
   #:use-module (gnu packages)
   #:use-module (gnu packages assembly)
+  #:use-module (gnu packages autotools)
   #:use-module (gnu packages check)
   #:use-module (gnu packages image)
   #:use-module (gnu packages linux)
@@ -33,6 +34,7 @@
   #:use-module (guix packages)
   #:use-module (guix git-download)
   #:use-module (guix build-system cmake)
+  #:use-module (guix build-system gnu)
   #:use-module (guix build-system meson))
 
 (define-public tg-owt
@@ -186,3 +188,53 @@ in telegram-desktop.  Rlottie is a platform independent standalone c++ library
 for rendering vector based animations and art in realtime.")
       (home-page "https://github.com/desktop-app/rlottie")
       (license license:expat))))
+
+(define-public tg-voip
+  (package
+    (name "tg-voip")
+    (version "2.4.4")
+    (source
+     (origin
+       (method git-fetch)
+       (uri
+        (git-reference
+         (url "https://github.com/telegramdesktop/libtgvoip.git")
+         (commit "37d98e984fd6fa389262307db826d52ab86c8241")))
+       (file-name
+        (git-file-name name version))
+       (sha256
+        (base32 "13dzvyq8p20nlhjihv18aj6y97czk07qdl0k6v81vp6mbwcldg7h"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:configure-flags
+       (list
+        "--disable-static"
+        "--disable-dsp" ; FIXME
+        "--enable-audio-callback"
+        "--with-alsa"
+        "--with-pulse")
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-linkers
+           (lambda _
+             (substitute* "Makefile.am"
+               (("\\$\\(CRYPTO_LIBS\\) \\$\\(OPUS_LIBS\\)")
+                "$(CRYPTO_LIBS) $(OPUS_LIBS) $(ALSA_LIBS) $(PULSE_LIBS)"))
+             (substitute* "tgvoip.pc.in"
+               (("libcrypto opus")
+                "libcrypto opus alsa libpulse"))
+             #t)))))
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("libtool" ,libtool)
+       ("pkg-config" ,pkg-config)))
+    (inputs
+     `(("alsa" ,alsa-lib)
+       ("openssl" ,openssl)
+       ("opus" ,opus)
+       ("pulseaudio" ,pulseaudio)))
+    (synopsis "Telegram VoIP Library")
+    (description "Tg-VoIP is the VoIP library for Telegram Desktop application.")
+    (home-page "https://github.com/telegramdesktop/libtgvoip")
+    (license license:unlicense)))
-- 
2.30.0