Add meson support

Fixes: #134

Signed-off-by: Víctor Manuel Jáquez Leal <vjaquez@igalia.com>

meson.build

@@ -0,0 +1,115 @@
+# libva package version number, (as distinct from shared library version)
+# XXX: we want the package version to remain at 1.0.x for VA-API 0.32.y
+#
+# - major version is automatically generated from VA-API major version
+# - minor version is automatically generated from VA-API minor version
+# - increment micro for any library release
+# - reset micro version to zero when VA-API major or minor version is changed
+project(
+  'libva', 'c',
+  version : '2.0.1.1',
+  meson_version : '>= 0.37.0',
+  default_options : [ 'warning_level=1',
+                      'buildtype=debugoptimized' ])
+
+# VA-API version
+# - increment major for any ABI change
+# - increment minor for any interface change (e.g. new/modified function)
+# - increment micro for any other change (new flag, new codec definition, etc.)
+# - reset micro version to zero when minor version is incremented
+# - reset minor version to zero when major version is incremented
+va_api_major_version = 1
+va_api_minor_version = 0
+va_api_micro_version = 0
+
+va_api_version = '@0@.@1@.@2@'.format(va_api_major_version,
+				      va_api_minor_version,
+				      va_api_micro_version)
+
+version_arr = meson.project_version().split('.')
+libva_major_version = version_arr[0]
+libva_minor_version = version_arr[1]
+libva_micro_version = version_arr[2]
+libva_version = '@0@.@1@.@2@'.format(libva_major_version,
+				     libva_minor_version,
+				     libva_micro_version)
+if version_arr.length() == 4
+  libva_version = '@0@.pre@1@'.format(libva_version, version_arr[3])
+endif
+
+
+# libva library version number (generated, do not change)
+# XXX: we want the SONAME to remain at libva.so.1 for VA-API major == 0
+#
+# The library name is generated libva.<x>.<y>.0 where
+# <x> = VA-API major version + 1
+# <y> = 100 * VA-API minor version + VA-API micro version
+#
+# For example:
+# VA-API 0.32.0 generates libva.so.1.3200.0
+# VA-API 0.34.1 generates libva.so.1.3401.0
+# VA-API 1.2.13 generates libva.so.2.213.0
+libva_interface_bias = va_api_major_version + 1
+libva_interface_age = 0
+libva_binary_age = 100 * va_api_minor_version + va_api_micro_version - libva_interface_age
+
+libva_lt_current = 100 * va_api_minor_version + va_api_micro_version + libva_interface_bias
+libva_lt_revision = libva_interface_age
+libva_lt_age = libva_binary_age - libva_interface_age
+
+libva_lt_version = '@0@.@1@.@2@'.format(libva_lt_current,
+					libva_lt_revision,
+					libva_lt_age)
+
+driverdir = get_option('driverdir')
+if driverdir == ''
+  driverdir = '@0@/@1@/@2@'.format(get_option('prefix'), get_option('libdir'), 'dri')
+endif
+
+configinc = include_directories('.')
+
+cc = meson.get_compiler('c')
+dl_dep = cc.find_library('dl', required : false)
+
+libdrm_dep = dependency('libdrm', version : '>= 2.4')
+
+WITH_DRM = not get_option('disable_drm')
+
+WITH_X11 = false
+if get_option('with_x11') != 'no'
+  x11_dep = dependency('x11', required : get_option('with_x11') == 'yes')
+  xext_dep = dependency('xext', required : get_option('with_x11') == 'yes')
+  xfixes_dep = dependency('xfixes', required : get_option('with_x11') == 'yes')
+
+  WITH_X11 = (x11_dep.found() and xext_dep.found() and xfixes_dep.found())
+endif
+
+if not WITH_X11 and get_option('with_glx') == 'yes'
+  error('VA/GLX explicitly enabled, but VA/X11 isn\'t built')
+endif
+
+WITH_GLX = false
+if WITH_X11 and get_option('with_glx') != 'no'
+  gl_dep = dependency('gl', required : get_option('with_glx') == 'yes')
+  WITH_GLX = gl_dep.found()
+endif
+
+WITH_WAYLAND = false
+if get_option('with_wayland') != 'no'
+  wayland_dep = dependency('wayland-client', version : '>= 1.11.0',
+			   required : get_option('with_wayland') == 'yes')
+  if wayland_dep.found()
+    prefix = wayland_dep.get_pkgconfig_variable('prefix')
+    wl_scanner = find_program('wayland-scanner',
+			      prefix + '/bin/wayland-scanner')
+  endif
+  WITH_WAYLAND = wayland_dep.found()
+endif
+
+
+if (not WITH_DRM and not WITH_X11 and not WITH_WAYLAND)
+  error('Please install at least one backend dev files (DRM, X11, Wayland)')
+endif
+
+subdir('va')
+subdir('pkgconfig')

meson_options.txt

@@ -0,0 +1,5 @@
+option('driverdir', type : 'string', description : 'drivers path')
+option('disable_drm', type : 'boolean', value : false)
+option('with_x11', type : 'combo', choices : ['yes', 'no', 'auto'], value : 'auto')
+option('with_glx', type : 'combo', choices : ['yes', 'no', 'auto'], value : 'auto')
+option('with_wayland', type : 'combo', choices : ['yes', 'no', 'auto'], value : 'auto')

pkgconfig/meson.build

@@ -0,0 +1,39 @@
+pkgconf = configuration_data()
+
+pkgconf.set('prefix', get_option('prefix'))
+pkgconf.set('exec_prefix', '${prefix}')
+pkgconf.set('libdir', '${prefix}/@0@'.format(get_option('libdir')))
+pkgconf.set('includedir', '${prefix}/@0@'.format(get_option('includedir')))
+pkgconf.set('LIBVA_VERSION', libva_version)
+pkgconf.set('VA_API_VERSION', va_api_version)
+pkgconf.set('LIBVA_DRIVERS_PATH', driverdir)
+
+pkg_install_dir = '@0@/pkgconfig'.format(get_option('libdir'))
+
+pkg_files = [ 'libva' ]
+
+if WITH_DRM
+  pkg_files += [ 'libva-drm' ]
+endif
+
+if WITH_X11
+  pkg_files += [ 'libva-x11' ]
+endif
+
+if WITH_GLX
+  pkg_files += [ 'libva-glx' ]
+endif
+
+if WITH_WAYLAND
+  pkg_files += [ 'libva-wayland' ]
+endif
+
+foreach p : pkg_files
+  infile = p + '.pc.in'
+  outfile = p + '.pc'
+  configure_file(
+    input : infile,
+    output : outfile,
+    configuration : pkgconf,
+    install_dir : pkg_install_dir)
+endforeach