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Rewrites FindFFmpeg using LibFindMacros handling components properly

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This commit is contained in:
Roman Proskuryakov 2016-05-09 17:24:17 +03:00
parent 81dd164006
commit da59ef0f67
4 changed files with 85 additions and 139 deletions
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10
CMakeLists.txt
View file

@ -149,15 +149,7 @@ else()
endif()
# Sound setup
unset(FFMPEG_LIBRARIES CACHE)
find_package(FFmpeg REQUIRED)
set (FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${SWSCALE_LIBRARY} ${SWRESAMPLE_LIBRARIES})
if ( NOT AVCODEC_FOUND OR NOT AVFORMAT_FOUND OR NOT AVUTIL_FOUND OR NOT SWSCALE_FOUND OR NOT SWRESAMPLE_FOUND)
message(FATAL_ERROR "FFmpeg component required, but not found!")
endif()
find_package(FFmpeg REQUIRED COMPONENTS AVCODEC AVFORMAT AVUTIL SWSCALE SWRESAMPLE)
# Required for building the FFmpeg headers
add_definitions(-D__STDC_CONSTANT_MACROS)

6
apps/openmw/CMakeLists.txt
View file

@ -115,7 +115,7 @@ endif ()
# Sound stuff - here so CMake doesn't stupidly recompile EVERYTHING
# when we change the backend.
include_directories(
${FFMPEG_INCLUDE_DIRS}
${FFmpeg_INCLUDE_DIRS}
)
target_link_libraries(openmw
@ -131,7 +131,7 @@ target_link_libraries(openmw
${Boost_FILESYSTEM_LIBRARY}
${Boost_PROGRAM_OPTIONS_LIBRARY}
${OPENAL_LIBRARY}
${FFMPEG_LIBRARIES}
${FFmpeg_LIBRARIES}
${BULLET_LIBRARIES}
${MYGUI_LIBRARIES}
${SDL2_LIBRARY}
@ -183,7 +183,7 @@ if(APPLE)
find_library(IOKIT_FRAMEWORK IOKit)
target_link_libraries(openmw ${COCOA_FRAMEWORK} ${IOKIT_FRAMEWORK})
if (FFMPEG_FOUND)
if (FFmpeg_FOUND)
find_library(COREVIDEO_FRAMEWORK CoreVideo)
find_library(VDA_FRAMEWORK VideoDecodeAcceleration)
target_link_libraries(openmw ${COREVIDEO_FRAMEWORK} ${VDA_FRAMEWORK})

204
cmake/FindFFmpeg.cmake
View file

@ -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, <kretz@kde.org>
# Copyright (c) 2008, Alexander Neundorf, <neundorf@kde.org>
# Copyright (c) 2011, Michael Jansen, <kde@michael-jansen.biz>
# Copyright (c) 2016, Roman Proskuryakov, <humbug@deeptown.org>
#
# 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 " - ${_component} not found.")
endif ()
endmacro()
#
### Macro: find_component
#
# Checks for the given component by invoking pkgconfig and then looking up the libraries and
# include directories.
#
macro(find_component _component _pkgconfig _library _header)
if (NOT WIN32)
# use pkg-config to get the directories and then use these values
# in the FIND_PATH() and FIND_LIBRARY() calls
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(PC_${_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
${_component}_VERSION)
# Macro: _internal_find_component
# Checks for the given component by invoking pkgconfig etc.
macro(_internal_find_component _component _pkgconfig _library _header)
set(_package_component FFmpeg_${_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(${_package_component})
endmacro()
# Check for cached results. If there are skip the costly part.
if (NOT FFMPEG_LIBRARIES)
# setter for 'hashmap'
macro(hashmap_set _table _key) # ARGN
set(${_table}_${_key} ${ARGN})
endmacro()
set (FFMPEGSDK $ENV{FFMPEG_HOME})
if (FFMPEGSDK)
set (FFMPEGSDK_INC "${FFMPEGSDK}/include")
set (FFMPEGSDK_LIB "${FFMPEGSDK}/lib")
endif ()
# 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 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)
# getter for 'hashmap'
macro(hashmap_get _table _key _out_var)
set(${_out_var} ${${_table}_${_key}})
endmacro()
# 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 ()
# 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)
# 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 ${FFMPEG_DEFINITIONS} CACHE STRING "The FFmpeg cflags." FORCE)
mark_as_advanced(FFMPEG_INCLUDE_DIRS
FFMPEG_LIBRARIES
FFMPEG_DEFINITIONS)
endif ()
# Now set the noncached _FOUND vars for the components.
foreach (_component AVCODEC AVDEVICE AVFORMAT AVUTIL POSTPROCESS SWSCALE SWRESAMPLE AVRESAMPLE)
set_component_found(${_component})
endforeach ()
# 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
)

4
extern/osg-ffmpeg-videoplayer/CMakeLists.txt vendored
View file

@ -10,8 +10,8 @@ set(OSG_FFMPEG_VIDEOPLAYER_SOURCE_FILES
audiofactory.hpp
)
include_directories(${FFMPEG_INCLUDE_DIRS})
include_directories(${FFmpeg_INCLUDE_DIRS})
add_library(${OSG_FFMPEG_VIDEOPLAYER_LIBRARY} STATIC ${OSG_FFMPEG_VIDEOPLAYER_SOURCE_FILES})
target_link_libraries(${OSG_FFMPEG_VIDEOPLAYER_LIBRARY} ${FFMPEG_LIBRARIES} ${Boost_THREAD_LIBRARY})
target_link_libraries(${OSG_FFMPEG_VIDEOPLAYER_LIBRARY} ${FFmpeg_LIBRARIES} ${Boost_THREAD_LIBRARY})
link_directories(${CMAKE_CURRENT_BINARY_DIR})