1project('gst-libav', 'c', 2 version : '1.20.3', 3 meson_version : '>= 0.59', 4 default_options : [ 'warning_level=1', 5 'buildtype=debugoptimized' ]) 6 7gst_version = meson.project_version() 8version_arr = gst_version.split('.') 9gst_version_major = version_arr[0].to_int() 10gst_version_minor = version_arr[1].to_int() 11gst_version_micro = version_arr[2].to_int() 12 if version_arr.length() == 4 13 gst_version_nano = version_arr[3].to_int() 14else 15 gst_version_nano = 0 16endif 17gst_version_is_stable = gst_version_minor.is_even() 18gst_version_is_dev = gst_version_minor.is_odd() and gst_version_micro < 90 19 20api_version = '1.0' 21libavfilter_dep = dependency('libavfilter', version: '>= 7.16.100', 22 fallback: ['FFmpeg', 'libavfilter_dep']) 23libavformat_dep = dependency('libavformat', version: '>= 58.12.100', 24 fallback: ['FFmpeg', 'libavformat_dep']) 25libavcodec_dep = dependency('libavcodec', version: '>= 58.18.100', 26 fallback: ['FFmpeg', 'libavcodec_dep']) 27libavutil_dep = dependency('libavutil', version: '>= 56.14.100', 28 fallback: ['FFmpeg', 'libavutil_dep']) 29 30libav_deps = [libavfilter_dep, libavformat_dep, libavcodec_dep, libavutil_dep] 31 32cc = meson.get_compiler('c') 33 34check_ffmpeg_src = '''#include <libavcodec/avcodec.h> 35#if LIBAVCODEC_VERSION_MICRO >= 100 36/* FFmpeg uses 100+ as its micro version */ 37#else 38#error libav provider should be FFmpeg 39#endif''' 40 41libav_deps_type_name = '' 42 43foreach dep: libav_deps 44 if libav_deps_type_name != '' and dep.type_name() != libav_deps_type_name 45 error('Libav deps must be either all internal or all external') 46 endif 47 libav_deps_type_name = dep.type_name() 48endforeach 49 50if dep.type_name() != 'internal' 51 if not cc.compiles(check_ffmpeg_src, dependencies : libav_deps, name : 'libav is provided by FFmpeg') 52 error('Uncompatible libavcodec found') 53 endif 54endif 55 56cdata = configuration_data() 57cdata.set('LIBAV_SOURCE', '"system install"') 58cdata.set('PACKAGE_VERSION', '"@0@"'.format(gst_version)) 59cdata.set('PACKAGE', '"gst-libav"') 60 61# GStreamer package name and origin url 62gst_package_name = get_option('package-name') 63if gst_package_name == '' 64 if gst_version_nano == 0 65 gst_package_name = 'GStreamer FFMPEG Plug-ins source release' 66 elif gst_version_nano == 1 67 gst_package_name = 'GStreamer FFMPEG Plug-ins git' 68 else 69 gst_package_name = 'GStreamer FFMPEG Plug-ins prerelease' 70 endif 71endif 72cdata.set_quoted('GST_PACKAGE_NAME', gst_package_name) 73cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin')) 74 75 76check_headers = [['unistd.h', 'HAVE_UNISTD_H']] 77 78foreach h : check_headers 79 if cc.has_header(h.get(0)) 80 cdata.set(h.get(1), 1) 81 endif 82endforeach 83 84if gst_version_is_stable 85 gst_req = '>= @0@.@1@.0'.format(gst_version_major, gst_version_minor) 86else 87 gst_req = '>= ' + gst_version 88endif 89 90gst_dep = dependency('gstreamer-1.0', version : gst_req, 91 fallback : ['gstreamer', 'gst_dep']) 92gstbase_dep = dependency('gstreamer-base-1.0', version : gst_req, 93 fallback : ['gstreamer', 'gst_base_dep']) 94gstcheck_dep = dependency('gstreamer-check-1.0', version : gst_req, 95 required : get_option('tests'), 96 fallback : ['gstreamer', 'gst_check_dep']) 97 98gstvideo_dep = dependency('gstreamer-video-1.0', version : gst_req, 99 fallback : ['gst-plugins-base', 'video_dep']) 100gstaudio_dep = dependency('gstreamer-audio-1.0', version : gst_req, 101 fallback : ['gst-plugins-base', 'audio_dep']) 102gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version : gst_req, 103 fallback : ['gst-plugins-base', 'pbutils_dep']) 104libm = cc.find_library('m', required : false) 105 106gst_libav_args = ['-DHAVE_CONFIG_H'] 107if cc.get_id() == 'msvc' 108 msvc_args = [ 109 # Ignore several spurious warnings for things gstreamer does very commonly 110 # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it 111 # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once 112 # NOTE: Only add warnings here if you are sure they're spurious 113 '/wd4018', # implicit signed/unsigned conversion 114 '/wd4146', # unary minus on unsigned (beware INT_MIN) 115 '/wd4244', # lossy type conversion (e.g. double -> int) 116 '/wd4305', # truncating type conversion (e.g. double -> float) 117 cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8 118 119 # Enable some warnings on MSVC to match GCC/Clang behaviour 120 '/w14062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled 121 '/w14101', # 'identifier' : unreferenced local variable 122 '/w14189', # 'identifier' : local variable is initialized but not referenced 123 ] 124 add_project_arguments(msvc_args, language: ['c', 'cpp']) 125endif 126 127# Symbol visibility 128if cc.has_argument('-fvisibility=hidden') 129 add_project_arguments('-fvisibility=hidden', language: 'c') 130endif 131 132# Don't export any symbols from static ffmpeg libraries 133if cc.has_link_argument('-Wl,--exclude-libs=ALL') 134 add_project_link_arguments('-Wl,--exclude-libs=ALL', language: 'c') 135endif 136 137# Disable strict aliasing 138if cc.has_argument('-fno-strict-aliasing') 139 add_project_arguments('-fno-strict-aliasing', language: 'c') 140endif 141 142if gst_dep.type_name() == 'internal' 143 gst_proj = subproject('gstreamer') 144 145 if not gst_proj.get_variable('gst_debug') 146 message('GStreamer debug system is disabled') 147 add_project_arguments('-Wno-unused', language: 'c') 148 else 149 message('GStreamer debug system is enabled') 150 endif 151else 152 # We can't check that in the case of subprojects as we won't 153 # be able to build against an internal dependency (which is not built yet) 154 if not cc.compiles(''' 155#include <gst/gstconfig.h> 156#ifdef GST_DISABLE_GST_DEBUG 157#error "debugging disabled, make compiler fail" 158#endif''' , dependencies: gst_dep) 159 message('GStreamer debug system is disabled') 160 add_project_arguments('-Wno-unused', language: 'c') 161 else 162 message('GStreamer debug system is enabled') 163 endif 164endif 165 166warning_flags = [ 167 '-Wmissing-declarations', 168 '-Wmissing-prototypes', 169 '-Wold-style-definition', 170 '-Wredundant-decls', 171 '-Wundef', 172 '-Wwrite-strings', 173 '-Wformat', 174 '-Wformat-nonliteral', 175 '-Wformat-security', 176 '-Winit-self', 177 '-Wmissing-include-dirs', 178 '-Waddress', 179 '-Wno-multichar', 180 '-Waggregate-return', 181 '-Wdeclaration-after-statement', 182 '-Wvla', 183 '-Wpointer-arith', 184] 185 186foreach extra_arg : warning_flags 187 if cc.has_argument (extra_arg) 188 add_project_arguments([extra_arg], language: 'c') 189 endif 190endforeach 191 192configinc = include_directories('.') 193plugins_install_dir = '@0@/gstreamer-1.0'.format(get_option('libdir')) 194 195pkgconfig = import('pkgconfig') 196plugins_pkgconfig_install_dir = join_paths(plugins_install_dir, 'pkgconfig') 197if get_option('default_library') == 'shared' 198 # If we don't build static plugins there is no need to generate pc files 199 plugins_pkgconfig_install_dir = disabler() 200endif 201 202plugins = [] 203subdir('ext/libav') 204subdir('docs') 205subdir('tests') 206 207# Set release date 208if gst_version_nano == 0 209 extract_release_date = find_program('scripts/extract-release-date-from-doap-file.py') 210 run_result = run_command(extract_release_date, gst_version, files('gst-libav.doap'), check: true) 211 release_date = run_result.stdout().strip() 212 cdata.set_quoted('GST_PACKAGE_RELEASE_DATETIME', release_date) 213 message('Package release date: ' + release_date) 214endif 215 216configure_file(output: 'config.h', configuration: cdata) 217