mirror of
https://github.com/cookiengineer/audacity
synced 2025-04-30 15:49:41 +02:00
b1549dd13e
Also, necessarily coupled with this: * add CMakeLists.txt for vendored libnyquist * fix SoundTouch header include paths * move nyq_reformat_aud_do_response function * handle portSMF headers installed to portsmf or portSMF Signed-off-by: Be <be@mixxx.org>
184 lines
6.7 KiB
CMake
184 lines
6.7 KiB
CMake
#.rst:
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# FindFFMPEG
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# ----------
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#
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# Try to find the required ffmpeg components (default: libavformat, libavutil, libavcodec)
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#
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# Next variables can be used to hint FFMPEG libs search:
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#
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# ::
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#
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# PC_<component>_LIBRARY_DIRS
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# PC_FFMPEG_LIBRARY_DIRS
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# PC_<component>_INCLUDE_DIRS
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# PC_FFMPEG_INCLUDE_DIRS
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#
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# Once done this will define
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#
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# ::
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#
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# FFMPEG_FOUND - System has the all required components.
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# FFMPEG_INCLUDE_DIRS - Include directory necessary for using the required components headers.
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# FFMPEG_LIBRARIES - Link these to use the required ffmpeg components.
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# FFMPEG_DEFINITIONS - Compiler switches required for using the required ffmpeg components.
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#
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# For each of the components it will additionally set.
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#
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# ::
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#
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# libavcodec
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# libavdevice
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# libavformat
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# libavfilter
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# libavutil
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# libpostproc
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# libswscale
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# libswresample
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#
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# the following variables will be defined
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#
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# ::
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#
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# <component>_FOUND - System has <component>
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# <component>_INCLUDE_DIRS - Include directory necessary for using the <component> headers
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# <component>_LIBRARIES - Link these to use <component>
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# <component>_DEFINITIONS - Compiler switches required for using <component>
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# <component>_VERSION - The components version
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#
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# the following import targets is created
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#
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# ::
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#
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# FFMPEG::FFMPEG - for all components
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# FFMPEG::<component> - where <component> in lower case (FFMPEG::avcodec) for each components
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#
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# Copyright (c) 2006, Matthias Kretz, <kretz@kde.org>
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# Copyright (c) 2008, Alexander Neundorf, <neundorf@kde.org>
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# Copyright (c) 2011, Michael Jansen, <kde@michael-jansen.biz>
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# Copyright (c) 2017, Alexander Drozdov, <adrozdoff@gmail.com>
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# Copyright (c) 2019, Jan Holthuis, <holthuis.jan@googlemail.com>
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#
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# Redistribution and use is allowed according to the terms of the BSD license.
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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
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include(FindPackageHandleStandardArgs)
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# The default components were taken from a survey over other FindFFMPEG.cmake files
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if (NOT FFMPEG_FIND_COMPONENTS)
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set(FFMPEG_FIND_COMPONENTS libavcodec libavformat libavutil)
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endif ()
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#
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### Macro: find_component
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#
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# Checks for the given component by invoking pkgconfig and then looking up the libraries and
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# include directories.
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#
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macro(find_component _component _pkgconfig _library _header)
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# use pkg-config to get the directories and then use these values
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# in the FIND_PATH() and FIND_LIBRARY() calls
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find_package(PkgConfig QUIET)
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if (PkgConfig_FOUND)
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pkg_check_modules(PC_FFMPEG_${_component} QUIET ${_pkgconfig})
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endif ()
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find_path(FFMPEG_${_component}_INCLUDE_DIRS ${_header}
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HINTS
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${PC_FFMPEG_${_component}_INCLUDEDIR}
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${PC_FFMPEG_${_component}_INCLUDE_DIRS}
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${PC_FFMPEG_INCLUDE_DIRS}
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PATH_SUFFIXES
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ffmpeg
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)
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find_library(FFMPEG_${_component}_LIBRARIES NAMES ${PC_FFMPEG_${_component}_LIBRARIES} ${_library}
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HINTS
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${PC_FFMPEG_${_component}_LIBDIR}
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${PC_FFMPEG_${_component}_LIBRARY_DIRS}
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${PC_FFMPEG_LIBRARY_DIRS}
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)
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message(STATUS ${FFMPEG_${_component}_LIBRARIES})
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message(STATUS ${PC_FFMPEG_${_component}_LIBRARIES})
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set(FFMPEG_${_component}_DEFINITIONS ${PC_FFMPEG_${_component}_CFLAGS_OTHER} CACHE STRING "The ${_component} CFLAGS.")
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set(FFMPEG_${_component}_VERSION ${PC_FFMPEG_${_component}_VERSION} CACHE STRING "The ${_component} version number.")
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if (FFMPEG_${_component}_LIBRARIES AND FFMPEG_${_component}_INCLUDE_DIRS)
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message(STATUS " - ${_component} ${FFMPEG_${_component}_VERSION} found.")
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set(FFMPEG_${_component}_FOUND TRUE)
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else ()
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message(STATUS " - ${_component} not found.")
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endif ()
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mark_as_advanced(
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FFMPEG_${_component}_INCLUDE_DIRS
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FFMPEG_${_component}_LIBRARIES
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FFMPEG_${_component}_DEFINITIONS
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FFMPEG_${_component}_VERSION)
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endmacro()
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message(STATUS "Searching for FFMPEG components")
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# Check for all possible component.
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find_component(libavcodec libavcodec avcodec libavcodec/avcodec.h)
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find_component(libavformat libavformat avformat libavformat/avformat.h)
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find_component(libavdevice libavdevice avdevice libavdevice/avdevice.h)
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find_component(libavutil libavutil avutil libavutil/avutil.h)
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find_component(libavfilter libavfilter avfilter libavfilter/avfilter.h)
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find_component(libswscale libswscale swscale libswscale/swscale.h)
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find_component(libpostproc libpostproc postproc libpostproc/postprocess.h)
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find_component(libswresample libswresample swresample libswresample/swresample.h)
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set(FFMPEG_LIBRARIES "")
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set(FFMPEG_DEFINITIONS "")
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# Check if the required components were found and add their stuff to the FFMPEG_* vars.
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foreach (_component ${FFMPEG_FIND_COMPONENTS})
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if (FFMPEG_${_component}_FOUND)
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#message(STATUS "Required component ${_component} present.")
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set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${FFMPEG_${_component}_LIBRARIES})
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set(FFMPEG_DEFINITIONS ${FFMPEG_DEFINITIONS} ${FFMPEG_${_component}_DEFINITIONS})
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list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_${_component}_INCLUDE_DIRS})
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string(TOLOWER ${_component} _lowerComponent)
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if (NOT TARGET FFMPEG::${_lowerComponent})
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add_library(FFMPEG::${_lowerComponent} INTERFACE IMPORTED)
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set_target_properties(FFMPEG::${_lowerComponent} PROPERTIES
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INTERFACE_COMPILE_OPTIONS "${${_component}_DEFINITIONS}"
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INTERFACE_INCLUDE_DIRECTORIES "${${_component}_INCLUDE_DIRS}"
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INTERFACE_LINK_LIBRARIES "${${_component}_LIBRARIES}")
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endif()
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endif()
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endforeach ()
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# Build the include path with duplicates removed.
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if (FFMPEG_INCLUDE_DIRS)
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list(REMOVE_DUPLICATES FFMPEG_INCLUDE_DIRS)
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endif ()
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# cache the vars.
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set(FFMPEG_INCLUDE_DIRS ${FFMPEG_INCLUDE_DIRS} CACHE STRING "The FFMPEG include directories." FORCE)
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set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} CACHE STRING "The FFMPEG libraries." FORCE)
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set(FFMPEG_DEFINITIONS ${FFMPEG_DEFINITIONS} CACHE STRING "The FFMPEG cflags." FORCE)
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mark_as_advanced(FFMPEG_INCLUDE_DIRS
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FFMPEG_LIBRARIES
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FFMPEG_DEFINITIONS)
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if (NOT TARGET FFMPEG::FFMPEG)
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add_library(FFMPEG::FFMPEG INTERFACE IMPORTED)
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set_target_properties(FFMPEG::FFMPEG PROPERTIES
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INTERFACE_COMPILE_OPTIONS "${FFMPEG_DEFINITIONS}"
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INTERFACE_INCLUDE_DIRECTORIES "${FFMPEG_INCLUDE_DIRS}"
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INTERFACE_LINK_LIBRARIES "${FFMPEG_LIBRARIES}")
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endif()
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# Compile the list of required vars
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set(_FFMPEG_REQUIRED_VARS FFMPEG_LIBRARIES FFMPEG_INCLUDE_DIRS)
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foreach (_component ${FFMPEG_FIND_COMPONENTS})
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list(APPEND _FFMPEG_REQUIRED_VARS FFMPEG_${_component}_LIBRARIES FFMPEG_${_component}_INCLUDE_DIRS)
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endforeach ()
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# Give a nice error message if some of the required vars are missing.
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find_package_handle_standard_args(FFMPEG DEFAULT_MSG ${_FFMPEG_REQUIRED_VARS})
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