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Rewrites FindFFmpeg using LibFindMacros handling components properly
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,11 +1,14 @@ | ||
| # vim: ts=2 sw=2 | ||
| # - Try to find the required ffmpeg components(default: AVFORMAT, AVUTIL, AVCODEC) | ||
| # - Try to find the required ffmpeg components | ||
| # | ||
| # This module accepts the following env variable | ||
| # FFMPEG_SDK - Can be set to custom install path | ||
| # | ||
| # Once done this will define | ||
| # FFMPEG_FOUND - System has the all required components. | ||
| # FFMPEG_INCLUDE_DIRS - Include directory necessary for using the required components headers. | ||
| # FFMPEG_LIBRARIES - Link these to use the required ffmpeg components. | ||
| # FFMPEG_DEFINITIONS - Compiler switches required for using the required ffmpeg components. | ||
| # FFmpeg_FOUND - System has the all required components. | ||
| # FFmpeg_INCLUDE_DIRS - Include directory necessary for using the required components headers. | ||
| # FFmpeg_LIBRARIES - Link these to use the required ffmpeg components. | ||
| # FFmpeg_DEFINITIONS - Compiler switches required for using the required ffmpeg components. | ||
| # | ||
| # For each of the components it will additionaly set. | ||
| # - AVCODEC | ||
|
|
@@ -16,144 +19,95 @@ | |
| # - SWSCALE | ||
| # - SWRESAMPLE | ||
| # the following variables will be defined | ||
| # <component>_FOUND - System has <component> | ||
| # <component>_INCLUDE_DIRS - Include directory necessary for using the <component> headers | ||
| # <component>_LIBRARIES - Link these to use <component> | ||
| # <component>_DEFINITIONS - Compiler switches required for using <component> | ||
| # <component>_VERSION - The components version | ||
| # FFmpeg_<component>_FOUND - System has <component> | ||
| # FFmpeg_<component>_INCLUDE_DIRS - Include directory necessary for using the <component> headers | ||
| # FFmpeg_<component>_LIBRARIES - Link these to use <component> | ||
| # FFmpeg_<component>_DEFINITIONS - Compiler switches required for using <component> | ||
| # FFmpeg_<component>_VERSION - The components version | ||
| # | ||
| # Copyright (c) 2006, Matthias Kretz, <[email protected]> | ||
| # Copyright (c) 2008, Alexander Neundorf, <[email protected]> | ||
| # Copyright (c) 2011, Michael Jansen, <[email protected]> | ||
| # Copyright (c) 2016, Roman Proskuryakov, <[email protected]> | ||
| # | ||
| # Redistribution and use is allowed according to the terms of the BSD license. | ||
| # For details see the accompanying COPYING-CMAKE-SCRIPTS file. | ||
|
|
||
| include(LibFindMacros) | ||
| include(FindPackageHandleStandardArgs) | ||
|
|
||
| # The default components were taken from a survey over other FindFFMPEG.cmake files | ||
| if (NOT FFmpeg_FIND_COMPONENTS) | ||
| set(FFmpeg_FIND_COMPONENTS AVCODEC AVFORMAT AVUTIL SWSCALE) | ||
| endif () | ||
|
|
||
| # | ||
| ### Macro: set_component_found | ||
| # | ||
| # Marks the given component as found if both *_LIBRARIES AND *_INCLUDE_DIRS is present. | ||
| # | ||
| macro(set_component_found _component ) | ||
| if (${_component}_LIBRARIES AND ${_component}_INCLUDE_DIRS) | ||
| # message(STATUS " - ${_component} found.") | ||
| set(${_component}_FOUND TRUE) | ||
| else () | ||
| # message(STATUS " - ${_component} not found.") | ||
| endif () | ||
| # Macro: _internal_find_component | ||
| # Checks for the given component by invoking pkgconfig etc. | ||
| macro(_internal_find_component _component _pkgconfig _library _header) | ||
| set(_package_component FFmpeg_${_component}) | ||
| libfind_pkg_detect(${_package_component} ${_pkgconfig} | ||
| FIND_PATH ${_header} | ||
| HINTS $ENV{FFMPEG_SDK}/include | ||
| PATH_SUFFIXES ffmpeg | ||
| FIND_LIBRARY ${_library} | ||
| HINTS $ENV{FFMPEG_SDK}/lib | ||
| ) | ||
| set(${_package_component}_DEFINITIONS ${${_package_component}_PKGCONF_CFLAGS_OTHER}) | ||
| set(${_package_component}_VERSION ${${_package_component}_PKGCONF_VERSION}) | ||
| libfind_process(${_package_component}) | ||
| endmacro() | ||
|
|
||
| # | ||
| ### Macro: find_component | ||
| # | ||
| # Checks for the given component by invoking pkgconfig and then looking up the libraries and | ||
| # include directories. | ||
| # | ||
| macro(find_component _component _pkgconfig _library _header) | ||
|
|
||
| if (NOT WIN32) | ||
| # use pkg-config to get the directories and then use these values | ||
| # in the FIND_PATH() and FIND_LIBRARY() calls | ||
| find_package(PkgConfig) | ||
| if (PKG_CONFIG_FOUND) | ||
| pkg_check_modules(PC_${_component} ${_pkgconfig}) | ||
| endif () | ||
| endif (NOT WIN32) | ||
|
|
||
| find_path(${_component}_INCLUDE_DIRS ${_header} | ||
| HINTS | ||
| ${FFMPEGSDK_INC} | ||
| ${PC_LIB${_component}_INCLUDEDIR} | ||
| ${PC_LIB${_component}_INCLUDE_DIRS} | ||
| PATH_SUFFIXES | ||
| ffmpeg | ||
| ) | ||
|
|
||
| find_library(${_component}_LIBRARIES NAMES ${_library} | ||
| HINTS | ||
| ${FFMPEGSDK_LIB} | ||
| ${PC_LIB${_component}_LIBDIR} | ||
| ${PC_LIB${_component}_LIBRARY_DIRS} | ||
| ) | ||
|
|
||
| set(${_component}_DEFINITIONS ${PC_${_component}_CFLAGS_OTHER} CACHE STRING "The ${_component} CFLAGS.") | ||
| set(${_component}_VERSION ${PC_${_component}_VERSION} CACHE STRING "The ${_component} version number.") | ||
|
|
||
| set_component_found(${_component}) | ||
|
|
||
| mark_as_advanced( | ||
| ${_component}_INCLUDE_DIRS | ||
| ${_component}_LIBRARIES | ||
| ${_component}_DEFINITIONS | ||
| ${_component}_VERSION) | ||
|
|
||
| # setter for 'hashmap' | ||
| macro(hashmap_set _table _key) # ARGN | ||
| set(${_table}_${_key} ${ARGN}) | ||
| endmacro() | ||
|
|
||
| # check for key in 'hashmap' | ||
| macro(hashmap_exists _table _key _out_var) | ||
| if (DEFINED ${_table}_${_key}) | ||
| set(${_out_var} TRUE) | ||
| else() | ||
| set(${_out_var} FALSE) | ||
| endif() | ||
| endmacro() | ||
|
|
||
| # Check for cached results. If there are skip the costly part. | ||
| if (NOT FFMPEG_LIBRARIES) | ||
|
|
||
| set (FFMPEGSDK $ENV{FFMPEG_HOME}) | ||
| if (FFMPEGSDK) | ||
| set (FFMPEGSDK_INC "${FFMPEGSDK}/include") | ||
| set (FFMPEGSDK_LIB "${FFMPEGSDK}/lib") | ||
| endif () | ||
|
|
||
| # Check for all possible component. | ||
| find_component(AVCODEC libavcodec avcodec libavcodec/avcodec.h) | ||
| find_component(AVFORMAT libavformat avformat libavformat/avformat.h) | ||
| find_component(AVDEVICE libavdevice avdevice libavdevice/avdevice.h) | ||
| find_component(AVUTIL libavutil avutil libavutil/avutil.h) | ||
| find_component(SWSCALE libswscale swscale libswscale/swscale.h) | ||
| find_component(POSTPROC libpostproc postproc libpostproc/postprocess.h) | ||
| find_component(SWRESAMPLE libswresample swresample libswresample/swresample.h) | ||
| find_component(AVRESAMPLE libavresample avresample libavresample/avresample.h) | ||
|
|
||
| # Check if the required components were found and add their stuff to the FFMPEG_* vars. | ||
| foreach (_component ${FFmpeg_FIND_COMPONENTS}) | ||
| if (${_component}_FOUND) | ||
| # message(STATUS "Required component ${_component} present.") | ||
| set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${${_component}_LIBRARIES}) | ||
| set(FFMPEG_DEFINITIONS ${FFMPEG_DEFINITIONS} ${${_component}_DEFINITIONS}) | ||
| list(APPEND FFMPEG_INCLUDE_DIRS ${${_component}_INCLUDE_DIRS}) | ||
| else () | ||
| # message(STATUS "Required component ${_component} missing.") | ||
| endif () | ||
| endforeach () | ||
|
|
||
| # Build the include path with duplicates removed. | ||
| if (FFMPEG_INCLUDE_DIRS) | ||
| list(REMOVE_DUPLICATES FFMPEG_INCLUDE_DIRS) | ||
| endif () | ||
|
|
||
| # cache the vars. | ||
| set(FFMPEG_INCLUDE_DIRS ${FFMPEG_INCLUDE_DIRS} CACHE STRING "The FFmpeg include directories." FORCE) | ||
| set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} CACHE STRING "The FFmpeg libraries." FORCE) | ||
| set(FFMPEG_DEFINITIONS ${FFMPEG_DEFINITIONS} CACHE STRING "The FFmpeg cflags." FORCE) | ||
|
|
||
| mark_as_advanced(FFMPEG_INCLUDE_DIRS | ||
| FFMPEG_LIBRARIES | ||
| FFMPEG_DEFINITIONS) | ||
| # getter for 'hashmap' | ||
| macro(hashmap_get _table _key _out_var) | ||
| set(${_out_var} ${${_table}_${_key}}) | ||
| endmacro() | ||
|
|
||
| endif () | ||
|
|
||
| # Now set the noncached _FOUND vars for the components. | ||
| foreach (_component AVCODEC AVDEVICE AVFORMAT AVUTIL POSTPROCESS SWSCALE SWRESAMPLE AVRESAMPLE) | ||
| set_component_found(${_component}) | ||
| endforeach () | ||
| # fill 'hashmap' named find_args | ||
| hashmap_set(find_args AVCODEC libavcodec avcodec libavcodec/avcodec.h) | ||
| hashmap_set(find_args AVFORMAT libavformat avformat libavformat/avformat.h) | ||
| hashmap_set(find_args AVDEVICE libavdevice avdevice libavdevice/avdevice.h) | ||
| hashmap_set(find_args AVUTIL libavutil avutil libavutil/avutil.h) | ||
| hashmap_set(find_args SWSCALE libswscale swscale libswscale/swscale.h) | ||
| hashmap_set(find_args POSTPROC libpostproc postproc libpostproc/postprocess.h) | ||
| hashmap_set(find_args SWRESAMPLE libswresample swresample libswresample/swresample.h) | ||
| hashmap_set(find_args AVRESAMPLE libavresample avresample libavresample/avresample.h) | ||
|
|
||
| # Compile the list of required vars | ||
| set(_FFmpeg_REQUIRED_VARS FFMPEG_LIBRARIES FFMPEG_INCLUDE_DIRS) | ||
| # Check if the required components were found and add their stuff to the FFmpeg_* vars. | ||
| foreach (_component ${FFmpeg_FIND_COMPONENTS}) | ||
| list(APPEND _FFmpeg_REQUIRED_VARS ${_component}_LIBRARIES ${_component}_INCLUDE_DIRS) | ||
| hashmap_exists(find_args ${_component} _known_component) | ||
| if (NOT _known_component) | ||
| message(FATAL_ERROR "Unknown component '${_component}'") | ||
| endif() | ||
| hashmap_get(find_args ${_component} _component_find_args) | ||
| _internal_find_component(${_component} ${_component_find_args}) | ||
| set(_package_component FFmpeg_${_component}) | ||
| if (${_package_component}_FOUND) | ||
| list(APPEND FFmpeg_LIBRARIES ${${_package_component}_LIBRARIES}) | ||
| list(APPEND FFmpeg_INCLUDE_DIRS ${${_package_component}_INCLUDE_DIRS}) | ||
| list(APPEND FFmpeg_DEFINITIONS ${${_package_component}_DEFINITIONS}) | ||
| endif () | ||
| endforeach () | ||
|
|
||
| # Give a nice error message if some of the required vars are missing. | ||
| find_package_handle_standard_args(FFmpeg DEFAULT_MSG ${_FFmpeg_REQUIRED_VARS}) | ||
| # Build the include path with duplicates removed. | ||
| if (FFmpeg_INCLUDE_DIRS) | ||
| list(REMOVE_DUPLICATES FFmpeg_INCLUDE_DIRS) | ||
| endif() | ||
|
|
||
| FIND_PACKAGE_HANDLE_STANDARD_ARGS(FFmpeg | ||
| FOUND_VAR FFmpeg_FOUND | ||
| HANDLE_COMPONENTS | ||
| REQUIRED_VARS | ||
| FFmpeg_LIBRARIES | ||
| FFmpeg_INCLUDE_DIRS | ||
| ) | ||
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