Add libsndfile to sphinx and DEB package

Author: gavv

debian/rules

@@ -14,12 +14,12 @@ override_dh_auto_clean:
 override_dh_auto_build:
 	scons --prefix=/usr --host=${DEB_HOST_GNU_TYPE} \
 		--libdir=/usr/lib/${DEB_HOST_MULTIARCH} \
-		--build-3rdparty=libuv,libunwind,speexdsp,sox,openssl,openfec
+		--build-3rdparty=libuv,libunwind,speexdsp,sox,sndfile,openssl,openfec
 
 override_dh_auto_install:
 	scons --prefix=/usr --host=${DEB_HOST_GNU_TYPE} \
 		--libdir=/usr/lib/${DEB_HOST_MULTIARCH} \
-		--build-3rdparty=libuv,libunwind,speexdsp,sox,openssl,openfec \
+		--build-3rdparty=libuv,libunwind,speexdsp,sox,sndfile,openssl,openfec \
 		install DESTDIR=debian/tmp
 
 override_dh_shlibdeps:

docs/sphinx/building/dependencies.rst

@@ -80,7 +80,7 @@ Runtime dependencies
 
    * - `OpenSSL <https://www.openssl.org/>`_
      - >= 1.1.1
-     - optional, used for SRTP and DTLS support
+     - optional, used for SRTP and DTLS support and CSPRNG
 
    * - `PulseAudio <https://www.freedesktop.org/wiki/Software/PulseAudio/>`_
      - >= 5.0
@@ -90,6 +90,10 @@ Runtime dependencies
      - >= 14.4.0
      - optional, used for audio I/O
 
+   * - `libsndfile <https://libsndfile.github.io/libsndfile/>`_
+     - >= 1.0.26
+     - optional, used for audio I/O
+
    * - `SpeexDSP <https://github.com/xiph/speexdsp>`_
      - >= 1.2beta3
      - optional, used for fast resampling