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CMakeLists.txt
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########################################################################
# Project setup
########################################################################
cmake_minimum_required(VERSION 2.8.9)
project(PothosAudio CXX)
if(${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME})
find_package(Pothos "0.6.0" CONFIG REQUIRED)
else()
find_package(Pothos CONFIG REQUIRED) #in-tree build
endif()
########################################################################
# Find PortAudio
########################################################################
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR})
find_package(Portaudio)
if (PORTAUDIO_FOUND)
message(STATUS "PORTAUDIO_INCLUDE_DIRS: ${PORTAUDIO_INCLUDE_DIRS}")
message(STATUS "PORTAUDIO_LIBRARIES: ${PORTAUDIO_LIBRARIES}")
message(STATUS "PORTAUDIO_DEFINITIONS: ${PORTAUDIO_DEFINITIONS}")
else()
message(WARNING "Pothos Audio blocks require PortAudio, skipping...")
endif()
########################################################################
# json.hpp header
########################################################################
find_path(JSON_HPP_INCLUDE_DIR NAMES json.hpp PATH_SUFFIXES nlohmann)
if (NOT JSON_HPP_INCLUDE_DIR)
message(WARNING "Pothos Audio blocks require json.hpp, skipping...")
endif (NOT JSON_HPP_INCLUDE_DIR)
########################################################################
## Feature registration
########################################################################
include(FeatureSummary)
include(CMakeDependentOption)
cmake_dependent_option(ENABLE_AUDIO "Enable Pothos Audio component" ON "Pothos_FOUND;PORTAUDIO_FOUND;JSON_HPP_INCLUDE_DIR" OFF)
add_feature_info(Audio ENABLE_AUDIO "Streaming audio source and sink blocks")
if (NOT ENABLE_AUDIO)
return()
endif()
########################################################################
## Build and install module
########################################################################
include_directories(${PORTAUDIO_INCLUDE_DIRS})
add_definitions(${PORTAUDIO_DEFINITIONS})
include_directories(${JSON_HPP_INCLUDE_DIR})
#the number of frames to block on an IO call
#when no non-blocking frames are available.
add_definitions(-DMIN_FRAMES_BLOCKING=1024)
POTHOS_MODULE_UTIL(
TARGET AudioSupport
SOURCES
AudioBlock.cpp
AudioSource.cpp
AudioSink.cpp
AudioInfo.cpp
LIBRARIES ${PORTAUDIO_LIBRARIES}
DESTINATION audio
ENABLE_DOCS
)