From 03eb22a5c78240763a6970d7a2f9bc394bf8ad44 Mon Sep 17 00:00:00 2001
From: Stefan Talpalaru <stefantalpalaru@yahoo.com>
Date: Fri, 2 Sep 2016 17:54:23 +0200
Subject: [PATCH] use the system RtAudio on Linux

---
 CMakeLists.txt                  | 60 ++++++++++-----------------------
 cmake/Modules/FindRtAudio.cmake | 48 ++++++++++++++++++++++++++
 2 files changed, 65 insertions(+), 43 deletions(-)
 create mode 100644 cmake/Modules/FindRtAudio.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a817a1d..cd1466f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -177,48 +177,26 @@ ENDIF (WIN32)
 IF (UNIX AND NOT APPLE)
     set(BUILD_DEB OFF CACHE BOOL "Build DEB")
 
-  
-    SET(USE_AUDIO_PULSE ON CACHE BOOL "Use Pulse Audio")
-    SET(USE_AUDIO_JACK OFF CACHE BOOL "Use Jack Audio")
-    SET(USE_AUDIO_ALSA OFF CACHE BOOL "Use ALSA Audio")
-    SET(USE_AUDIO_OSS OFF CACHE BOOL "Use OSS Audio")
-  
     SET(LIQUID_LIB liquid)
     SET(OTHER_LIBRARIES ${OTHER_LIBRARIES} dl)
 
-IF(USE_AUDIO_PULSE)
-   SET (OTHER_LIBRARIES ${OTHER_LIBRARIES} pulse-simple pulse)
-   ADD_DEFINITIONS(
-        -D__LINUX_PULSE__
-   )
-ENDIF(USE_AUDIO_PULSE)
-
-IF(USE_AUDIO_JACK)
-   find_package(Jack)
-   SET (OTHER_LIBRARIES ${OTHER_LIBRARIES} ${JACK_LIBRARIES})
-   ADD_DEFINITIONS(
-        -D__UNIX_JACK__
-   )
-   include_directories(${JACK_INCLUDE_DIRS})
-ENDIF(USE_AUDIO_JACK)
-
-IF(USE_AUDIO_ALSA)
-   SET (OTHER_LIBRARIES ${OTHER_LIBRARIES} asound)
-   set(ALSA_INCLUDE_DIR "/usr/include" CACHE FILEPATH "ALSA include path")
-   include_directories(${ALSA_INCLUDE_DIR})
-   set(ALSA_LIB_DIR "/usr/lib" CACHE FILEPATH "ALSA lib path")
-   link_directories(${ALSA_LIB_DIR})
-   ADD_DEFINITIONS(
-       -D__LINUX_ALSA__
-   )
-ENDIF(USE_AUDIO_ALSA)
-
-IF(USE_AUDIO_OSS)
-   SET (OTHER_LIBRARIES ${OTHER_LIBRARIES} oss)
-   ADD_DEFINITIONS(
-        -D__LINUX_OSS__
-   )
-ENDIF(USE_AUDIO_OSS)
+    # use the system RtAudio which in turn provides OSS, ALSA, JACK,
+    # PulseAudio support depending on how it was compiled
+    find_package(RtAudio)
+    SET(OTHER_LIBRARIES ${OTHER_LIBRARIES} ${RTAUDIO_LIBRARIES})
+    ADD_DEFINITIONS(${RTAUDIO_DEFINITIONS})
+    include_directories(${RTAUDIO_INCLUDE_DIR})
+ELSE(UNIX AND NOT APPLE)
+    SET (cubicsdr_sources
+        ${cubicsdr_sources}
+        external/rtaudio/RtAudio.cpp
+    )
+    SET (cubicsdr_headers
+        ${cubicsdr_headers}
+        external/rtaudio/RtAudio.h
+    )
+    SOURCE_GROUP("_ext-RTAudio" REGULAR_EXPRESSION "external/rtaudio/.*${REG_EXT}")
+    include_directories(${PROJECT_SOURCE_DIR}/external/rtaudio)
 ENDIF(UNIX AND NOT APPLE)
 
 IF (APPLE)
@@ -304,7 +282,6 @@ SET (cubicsdr_sources
     src/forms/SDRDevices/SDRDevicesForm.cpp
     src/forms/SDRDevices/SDRDeviceAdd.cpp
     src/forms/SDRDevices/SDRDeviceAddForm.cpp
-	external/rtaudio/RtAudio.cpp
 	external/lodepng/lodepng.cpp
 	external/tinyxml/tinyxml.cpp
 	external/tinyxml/tinystr.cpp
@@ -408,7 +385,6 @@ SET (cubicsdr_headers
     src/forms/SDRDevices/SDRDevicesForm.h
     src/forms/SDRDevices/SDRDeviceAdd.h
     src/forms/SDRDevices/SDRDeviceAddForm.h
-	external/rtaudio/RtAudio.h
 	external/lodepng/lodepng.h
 	external/tinyxml/tinyxml.h
 	external/tinyxml/tinystr.h
@@ -512,7 +488,6 @@ SOURCE_GROUP("Visual" REGULAR_EXPRESSION "src/visual/${REG_EXT}")
 SOURCE_GROUP("Panel" REGULAR_EXPRESSION "src/panel/${REG_EXT}")
 SOURCE_GROUP("Process" REGULAR_EXPRESSION "src/process/${REG_EXT}")
 SOURCE_GROUP("UI" REGULAR_EXPRESSION "src/ui/${REG_EXT}")
-SOURCE_GROUP("_ext-RTAudio" REGULAR_EXPRESSION "external/rtaudio/.*${REG_EXT}")
 SOURCE_GROUP("_ext-LodePNG" REGULAR_EXPRESSION "external/lodepng/.*${REG_EXT}")
 SOURCE_GROUP("_ext-TinyXML" REGULAR_EXPRESSION "external/tinyxml/.*${REG_EXT}")
 SOURCE_GROUP("_ext-CubicVR2" REGULAR_EXPRESSION "external/cubicvr2/.*${REG_EXT}")
@@ -534,7 +509,6 @@ include_directories (
 	${PROJECT_SOURCE_DIR}/src/ui
 	${PROJECT_SOURCE_DIR}/src/rig
 	${PROJECT_SOURCE_DIR}/src
-	${PROJECT_SOURCE_DIR}/external/rtaudio
 	${PROJECT_SOURCE_DIR}/external/lodepng 
 	${PROJECT_SOURCE_DIR}/external/tinyxml
 	${PROJECT_SOURCE_DIR}/external/cubicvr2/math
diff --git a/cmake/Modules/FindRtAudio.cmake b/cmake/Modules/FindRtAudio.cmake
new file mode 100644
index 0000000..28c7b73
--- /dev/null
+++ b/cmake/Modules/FindRtAudio.cmake
@@ -0,0 +1,48 @@
+# https://github.com/idiap/juicer/blob/master/cmake/FindRtAudio.cmake
+#
+# Copyright 2015 by Idiap Research Institute
+#
+# Licensed under 3-clause BSD.
+#
+# Author(s):
+#   Phil Garner, November 2015
+#
+# ...but basically copied from FindSndFile in libube, in turn from the examples
+# on the web.
+#
+
+#
+# Try to find RtAudio
+# Once done this will define
+#  RTAUDIO_FOUND          - System has RtAudio
+#  RTAUDIO_INCLUDE_DIR    - The RtAudio include directories
+#  RTAUDIO_LIBRARIES      - The libraries needed to use RtAudio
+#  RTAUDIO_DEFINITIONS    - Compiler switches required for using RtAudio
+#  RTAUDIO_VERSION_STRING - the version of RtAudio found
+#
+
+find_package(PkgConfig)
+pkg_check_modules(PC_RTAUDIO rtaudio)
+
+set(RTAUDIO_DEFINITIONS ${PC_RTAUDIO_CFLAGS_OTHER})
+set(RTAUDIO_VERSION_STRING ${PC_RTAUDIO_VERSION})
+
+find_path(
+  RTAUDIO_INCLUDE_DIR RtAudio.h
+  HINTS ${PC_RTAUDIO_INCLUDEDIR} ${PC_RTAUDIO_INCLUDE_DIRS}
+)
+
+find_library(
+  RTAUDIO_LIBRARIES NAMES rtaudio
+  HINTS ${PC_RTAUDIO_LIBDIR} ${PC_RTAUDIO_LIBRARY_DIRS}
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(
+  RtAudio
+  REQUIRED_VARS RTAUDIO_LIBRARIES RTAUDIO_INCLUDE_DIR
+  VERSION_VAR RTAUDIO_VERSION_STRING
+)
+
+#mark_as_advanced(RTAUDIO_INCLUDE_DIR RTAUDIO_LIBRARIES)
+