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project ( 'gst-libav' , 'c' ,
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version : '1.24.3.1' ,
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meson_version : '>= 1.1' ,
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default_options : [ 'warning_level=1' ,
'buildtype=debugoptimized' ] )
gst_version = meson . project_version ( )
version_arr = gst_version . split ( '.' )
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gst_version_major = version_arr [ 0 ] . to_int ( )
gst_version_minor = version_arr [ 1 ] . to_int ( )
gst_version_micro = version_arr [ 2 ] . to_int ( )
if version_arr . length ( ) == 4
gst_version_nano = version_arr [ 3 ] . to_int ( )
else
gst_version_nano = 0
endif
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gst_version_is_stable = gst_version_minor . is_even ( )
gst_version_is_dev = gst_version_minor . is_odd ( ) and gst_version_micro < 90
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api_version = '1.0'
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libavfilter_dep = dependency ( 'libavfilter' , version : '>= 7.16.100' ,
fallback : [ 'FFmpeg' , 'libavfilter_dep' ] )
libavformat_dep = dependency ( 'libavformat' , version : '>= 58.12.100' ,
fallback : [ 'FFmpeg' , 'libavformat_dep' ] )
libavcodec_dep = dependency ( 'libavcodec' , version : '>= 58.18.100' ,
fallback : [ 'FFmpeg' , 'libavcodec_dep' ] )
libavutil_dep = dependency ( 'libavutil' , version : '>= 56.14.100' ,
fallback : [ 'FFmpeg' , 'libavutil_dep' ] )
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libav_deps = [ libavfilter_dep , libavformat_dep , libavcodec_dep , libavutil_dep ]
cc = meson . get_compiler ( 'c' )
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static_build = get_option ( 'default_library' ) == 'static'
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check_ffmpeg_src = '' ' #include <libavcodec/avcodec.h>
#if LIBAVCODEC_VERSION_MICRO >= 100
/ * FFmpeg uses 100 + as its micro version * /
#else
#error libav provider should be FFmpeg
#endif'''
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libav_deps_type_name = ''
foreach dep : libav_deps
if libav_deps_type_name != '' and dep . type_name ( ) != libav_deps_type_name
error ( 'Libav deps must be either all internal or all external' )
endif
libav_deps_type_name = dep . type_name ( )
endforeach
if dep . type_name ( ) != 'internal'
if not cc . compiles ( check_ffmpeg_src , dependencies : libav_deps , name : 'libav is provided by FFmpeg' )
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error ( 'Incompatible libavcodec found' )
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endif
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endif
cdata = configuration_data ( )
cdata . set ( 'LIBAV_SOURCE' , '"system install"' )
cdata . set ( 'PACKAGE_VERSION' , '"@0@"' . format ( gst_version ) )
cdata . set ( 'PACKAGE' , '"gst-libav"' )
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# GStreamer package name and origin url
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gst_package_name = get_option ( 'package-name' )
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if gst_package_name == ''
if gst_version_nano == 0
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gst_package_name = 'GStreamer FFMPEG Plug-ins source release'
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elif gst_version_nano == 1
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gst_package_name = 'GStreamer FFMPEG Plug-ins git'
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else
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gst_package_name = 'GStreamer FFMPEG Plug-ins prerelease'
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endif
endif
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cdata . set_quoted ( 'GST_PACKAGE_NAME' , gst_package_name )
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cdata . set_quoted ( 'GST_PACKAGE_ORIGIN' , get_option ( 'package-origin' ) )
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check_headers = [ [ 'unistd.h' , 'HAVE_UNISTD_H' ] ]
foreach h : check_headers
if cc . has_header ( h . get ( 0 ) )
cdata . set ( h . get ( 1 ) , 1 )
endif
endforeach
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if gst_version_is_stable
gst_req = '>= @0@.@1@.0' . format ( gst_version_major , gst_version_minor )
else
gst_req = '>= ' + gst_version
endif
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gst_dep = dependency ( 'gstreamer-1.0' , version : gst_req ,
fallback : [ 'gstreamer' , 'gst_dep' ] )
gstbase_dep = dependency ( 'gstreamer-base-1.0' , version : gst_req ,
fallback : [ 'gstreamer' , 'gst_base_dep' ] )
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gstcheck_dep = dependency ( 'gstreamer-check-1.0' , version : gst_req ,
required : get_option ( 'tests' ) ,
fallback : [ 'gstreamer' , 'gst_check_dep' ] )
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gstvideo_dep = dependency ( 'gstreamer-video-1.0' , version : gst_req ,
fallback : [ 'gst-plugins-base' , 'video_dep' ] )
gstaudio_dep = dependency ( 'gstreamer-audio-1.0' , version : gst_req ,
fallback : [ 'gst-plugins-base' , 'audio_dep' ] )
gstpbutils_dep = dependency ( 'gstreamer-pbutils-1.0' , version : gst_req ,
fallback : [ 'gst-plugins-base' , 'pbutils_dep' ] )
libm = cc . find_library ( 'm' , required : false )
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gst_libav_args = [ '-DHAVE_CONFIG_H' ]
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if cc . get_id ( ) == 'msvc'
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msvc_args = [
# Ignore several spurious warnings for things gstreamer does very commonly
# If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
# If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
# NOTE: Only add warnings here if you are sure they're spurious
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'/wd4018' , # implicit signed/unsigned conversion
'/wd4146' , # unary minus on unsigned (beware INT_MIN)
'/wd4244' , # lossy type conversion (e.g. double -> int)
'/wd4305' , # truncating type conversion (e.g. double -> float)
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cc . get_supported_arguments ( [ '/utf-8' ] ) , # set the input encoding to utf-8
]
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if gst_version_is_dev
# Enable some warnings on MSVC to match GCC/Clang behaviour
msvc_args + = cc . get_supported_arguments ( [
'/we4002' , # too many actual parameters for macro 'identifier'
'/we4003' , # not enough actual parameters for macro 'identifier'
'/we4013' , # 'function' undefined; assuming extern returning int
'/we4020' , # 'function' : too many actual parameters
'/we4027' , # function declared without formal parameter list
'/we4029' , # declared formal parameter list different from definition
'/we4033' , # 'function' must return a value
'/we4045' , # 'array' : array bounds overflow
'/we4047' , # 'operator' : 'identifier1' differs in levels of indirection from 'identifier2'
'/we4053' , # one void operand for '?:'
'/we4062' , # enumerator 'identifier' in switch of enum 'enumeration' is not handled
'/we4098' , # 'function' : void function returning a value
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'/we4101' , # 'identifier' : unreferenced local variable
'/we4189' , # 'identifier' : local variable is initialized but not referenced
'/we4996' , # 'identifier': was declared deprecated
'-D_CRT_SECURE_NO_WARNINGS' , # error C4996: 'identifier': This function or variable may be unsafe. Consider using identifier_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
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] )
endif
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add_project_arguments ( msvc_args , language : [ 'c' , 'cpp' ] )
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endif
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# glib doesn't support unloading, which means that unloading and reloading
# any library that registers static types will fail
if cc . has_link_argument ( '-Wl,-z,nodelete' )
add_project_link_arguments ( '-Wl,-z,nodelete' , language : 'c' )
endif
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# Symbol visibility
if cc . has_argument ( '-fvisibility=hidden' )
add_project_arguments ( '-fvisibility=hidden' , language : 'c' )
endif
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# Don't export any symbols from static ffmpeg libraries
if cc . has_link_argument ( '-Wl,--exclude-libs=ALL' )
add_project_link_arguments ( '-Wl,--exclude-libs=ALL' , language : 'c' )
endif
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# Disable strict aliasing
if cc . has_argument ( '-fno-strict-aliasing' )
add_project_arguments ( '-fno-strict-aliasing' , language : 'c' )
endif
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# Disable compiler warnings for unused variables and args if gst debug system is disabled
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if gst_dep . type_name ( ) == 'internal'
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gst_proj = subproject ( 'gstreamer' )
gst_debug_disabled = not gst_proj . get_variable ( 'gst_debug' )
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else
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# We can't check that in the case of subprojects as we won't
# be able to build against an internal dependency (which is not built yet)
gst_debug_disabled = cc . has_header_symbol ( 'gst/gstconfig.h' , 'GST_DISABLE_GST_DEBUG' , dependencies : gst_dep )
endif
if gst_debug_disabled
message ( 'GStreamer debug system is disabled' )
if cc . get_argument_syntax ( ) == 'msvc'
msvc_args = cc . get_supported_arguments ( [
'/wd4101' , # 'identifier' : unreferenced local variable
'/wd4189' , # 'identifier' : local variable is initialized but not referenced
] )
add_project_arguments ( msvc_args , language : 'c' )
elif cc . has_argument ( '-Wno-unused' )
add_project_arguments ( [ '-Wno-unused' ] , language : 'c' )
endif
else
if cc . get_argument_syntax ( ) == 'msvc' and gst_version_is_dev
msvc_args = cc . get_supported_arguments ( [
'/we4101' , # 'identifier' : unreferenced local variable
'/we4189' , # 'identifier' : local variable is initialized but not referenced
] )
add_project_arguments ( msvc_args , language : 'c' )
endif
message ( 'GStreamer debug system is enabled' )
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endif
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warning_flags = [
'-Wmissing-declarations' ,
'-Wmissing-prototypes' ,
'-Wold-style-definition' ,
'-Wredundant-decls' ,
'-Wundef' ,
'-Wwrite-strings' ,
'-Wformat' ,
'-Wformat-nonliteral' ,
'-Wformat-security' ,
'-Winit-self' ,
'-Wmissing-include-dirs' ,
'-Waddress' ,
'-Wno-multichar' ,
'-Waggregate-return' ,
'-Wvla' ,
'-Wpointer-arith' ,
]
foreach extra_arg : warning_flags
if cc . has_argument ( extra_arg )
add_project_arguments ( [ extra_arg ] , language : 'c' )
endif
endforeach
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configinc = include_directories ( '.' )
plugins_install_dir = '@0@/gstreamer-1.0' . format ( get_option ( 'libdir' ) )
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pkgconfig = import ( 'pkgconfig' )
plugins_pkgconfig_install_dir = join_paths ( plugins_install_dir , 'pkgconfig' )
if get_option ( 'default_library' ) == 'shared'
# If we don't build static plugins there is no need to generate pc files
plugins_pkgconfig_install_dir = disabler ( )
endif
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plugins = [ ]
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subdir ( 'ext/libav' )
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subdir ( 'docs' )
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subdir ( 'tests' )
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# Set release date
if gst_version_nano == 0
extract_release_date = find_program ( 'scripts/extract-release-date-from-doap-file.py' )
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run_result = run_command ( extract_release_date , gst_version , files ( 'gst-libav.doap' ) , check : true )
release_date = run_result . stdout ( ) . strip ( )
cdata . set_quoted ( 'GST_PACKAGE_RELEASE_DATETIME' , release_date )
message ( 'Package release date: ' + release_date )
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endif
configure_file ( output : 'config.h' , configuration : cdata )
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meson . add_dist_script ( 'scripts/gen-changelog.py' , meson . project_name ( ) , '1.22.0' , meson . project_version ( ) )
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gst_plugins = [ ]
foreach plugin : plugins
pkgconfig . generate ( plugin , install_dir : plugins_pkgconfig_install_dir )
dep = declare_dependency ( link_with : plugin , variables : { 'full_path' : plugin . full_path ( ) } )
meson . override_dependency ( plugin . name ( ) , dep )
gst_plugins + = [ dep ]
endforeach