#.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")