Add ALSA and PulseAudio support on Linux

CMakeLists.txt

@@ -33,6 +33,8 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
 if (LINUX)
     find_package(OpenAL REQUIRED)
+    find_package(ALSA)
+    find_package(PulseAudio)
 else(LINUX)
     # Needs OpenAL-SOFT
     # Install via `brew install openal-soft` and configure with cmake call from README.md

Telegram/CMakeLists.txt

@@ -554,7 +554,7 @@ include_directories(ThirdParty/GSL/include ThirdParty/variant/include
 include_directories(SourceFiles SourceFiles/core)
 
 include_directories(${OPENAL_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIRS} ${OPENSSL_INCLUDE_DIR}
-    ${OPUS_INCLUDE_DIR} ${FFMPEG_INCLUDE_DIRS})
+    ${OPUS_INCLUDE_DIR} ${FFMPEG_INCLUDE_DIRS} ${ALSA_INCLUDE_DIRS} ${PULSEAUDIO_INCLUDE_DIR})
 
 add_subdirectory(ThirdParty/libtgvoip)
 
@@ -690,6 +690,10 @@ if(WIN32)
     )
 endif()
 
+if (LINUX)
+    target_link_libraries(Telegram ${ALSA_LIBRARIES} ${PULSEAUDIO_LIBRARIES})
+endif()
+
 set_target_properties(Telegram
     PROPERTIES
         COTIRE_CXX_PREFIX_HEADER_INIT SourceFiles/stdafx.h

Telegram/ThirdParty/libtgvoip/CMakeLists.txt

@@ -116,13 +116,23 @@ if (APPLE)
 endif()
 
 if (LINUX)
-    target_sources(tgvoip PRIVATE
+    find_package(ALSA)
-        os/linux/AudioInputALSA.cpp
+    find_package(PulseAudio)
-        os/linux/AudioOutputALSA.cpp
+
-        os/linux/AudioOutputPulse.cpp
+    if (ALSA_FOUND)
-        os/linux/AudioInputPulse.cpp
+        target_sources(tgvoip PRIVATE
-        os/linux/PulseAudioLoader.cpp
+            os/linux/AudioInputALSA.cpp
-    )
+            os/linux/AudioOutputALSA.cpp
+        )
+    endif()
+
+    if (PULSEAUDIO_FOUND)
+        target_sources(tgvoip PRIVATE
+            os/linux/AudioInputPulse.cpp
+            os/linux/AudioOutputPulse.cpp
+            os/linux/PulseAudioLoader.cpp
+        )
+    endif()
 endif()
 
 if (NOT WIN32) # POSIX

modules/FindPulseAudio.cmake

@@ -0,0 +1,129 @@
+#.rst:
+# FindPulseAudio
+# --------------
+#
+# Try to locate the PulseAudio library.
+# If found, this will define the following variables:
+#
+# ``PulseAudio_FOUND``
+#      True if the system has the PulseAudio library of at least
+#      the minimum version specified by either the version parameter
+#      to find_package() or the variable PulseAudio_MINIMUM_VERSION
+# ``PulseAudio_INCLUDE_DIRS``
+#      The PulseAudio include directory
+# ``PulseAudio_LIBRARIES``
+#      The PulseAudio libraries for linking
+# ``PulseAudio_MAINLOOP_LIBRARY``
+#      The libraries needed to use PulseAudio Mainloop
+# ``PulseAudio_VERSION``
+#      The version of PulseAudio that was found
+# ``PulseAudio_INCLUDE_DIR``
+#     Deprecated, use ``PulseAudio_INCLUDE_DIRS``
+# ``PulseAudio_LIBRARY``
+#     Deprecated, use ``PulseAudio_LIBRARIES``
+#
+# If ``PulseAudio_FOUND`` is TRUE, it will also define the following
+# imported target:
+#
+# ``PulseAudio::PulseAudio``
+#     The PulseAudio library
+#
+# Since 5.41.0.
+
+#=============================================================================
+# Copyright (c) 2008, Matthias Kretz, <kretz@kde.org>
+# Copyright (c) 2009, Marcus Hufgard, <Marcus.Hufgard@hufgard.de>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#=============================================================================
+
+# Support PulseAudio_MINIMUM_VERSION for compatibility:
+if(NOT PulseAudio_FIND_VERSION)
+  set(PulseAudio_FIND_VERSION "${PulseAudio_MINIMUM_VERSION}")
+endif()
+
+# the minimum version of PulseAudio we require
+if(NOT PulseAudio_FIND_VERSION)
+  set(PulseAudio_FIND_VERSION "0.9.9")
+endif()
+
+find_package(PkgConfig)
+pkg_check_modules(PC_PulseAudio QUIET libpulse>=${PulseAudio_FIND_VERSION})
+pkg_check_modules(PC_PulseAudio_MAINLOOP QUIET libpulse-mainloop-glib)
+
+find_path(PulseAudio_INCLUDE_DIRS pulse/pulseaudio.h
+   HINTS
+   ${PC_PulseAudio_INCLUDEDIR}
+   ${PC_PulseAudio_INCLUDE_DIRS}
+   )
+
+find_library(PulseAudio_LIBRARIES NAMES pulse libpulse
+   HINTS
+   ${PC_PulseAudio_LIBDIR}
+   ${PC_PulseAudio_LIBRARY_DIRS}
+   )
+
+find_library(PulseAudio_MAINLOOP_LIBRARY NAMES pulse-mainloop pulse-mainloop-glib libpulse-mainloop-glib
+   HINTS
+   ${PC_PulseAudio_LIBDIR}
+   ${PC_PulseAudio_LIBRARY_DIRS}
+   )
+
+# Store the version number in the cache, so we don't have to search every time again:
+if (PulseAudio_INCLUDE_DIRS AND NOT PulseAudio_VERSION)
+
+   # get PulseAudio's version from its version.h
+   file(STRINGS "${PulseAudio_INCLUDE_DIRS}/pulse/version.h" pulse_version_h
+        REGEX ".*pa_get_headers_version\\(\\).*")
+   string(REGEX REPLACE ".*pa_get_headers_version\\(\\)\ \\(\"([0-9]+\\.[0-9]+\\.[0-9]+)[^\"]*\"\\).*" "\\1"
+                         _PulseAudio_VERSION "${pulse_version_h}")
+
+   set(PulseAudio_VERSION "${_PulseAudio_VERSION}" CACHE STRING "Version number of PulseAudio" FORCE)
+endif()
+
+# Use the new extended syntax of find_package_handle_standard_args(), which also handles version checking:
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(PulseAudio REQUIRED_VARS PulseAudio_LIBRARIES PulseAudio_INCLUDE_DIRS
+                                             VERSION_VAR PulseAudio_VERSION)
+
+# Deprecated synonyms
+set(PULSEAUDIO_INCLUDE_DIR "${PulseAudio_INCLUDE_DIRS}")
+set(PULSEAUDIO_LIBRARY "${PulseAudio_LIBRARIES}")
+set(PULSEAUDIO_MAINLOOP_LIBRARY "${PulseAudio_MAINLOOP_LIBRARY}")
+set(PULSEAUDIO_FOUND "${PulseAudio_FOUND}")
+
+if(PulseAudio_FOUND AND NOT TARGET PulseAudio::PulseAudio)
+  add_library(PulseAudio::PulseAudio UNKNOWN IMPORTED)
+  set_target_properties(PulseAudio::PulseAudio PROPERTIES
+                        IMPORTED_LOCATION "${PulseAudio_LIBRARIES}"
+            INTERFACE_INCLUDE_DIRECTORIES "${PulseAudio_INCLUDE_DIRS}")
+endif()
+
+include(FeatureSummary)
+mark_as_advanced(PulseAudio_INCLUDE_DIRS PULSEAUDIO_INCLUDE_DIR
+                 PulseAudio_LIBRARIES PULSEAUDIO_LIBRARY
+         PulseAudio_MAINLOOP_LIBRARY PULSEAUDIO_MAINLOOP_LIBRARY)
+set_package_properties(PulseAudio PROPERTIES
+  URL "https://www.freedesktop.org/wiki/Software/PulseAudio"
+  DESCRIPTION "Sound server, for sound stream routing and mixing")