meson: add some starting build files for GL

Currently only works on linux with egl/glx + wayland/x11 but the general
principals have been layed out for adding the other GL platforms/winsys'.

2 files changed, 111 insertions, 1 deletions

diff --git a/ext/gl/meson.build b/ext/gl/meson.build
new file mode 100644
index 000000000..7076880a9
--- /dev/null
+++ b/ext/gl/meson.build
@@ -0,0 +1,110 @@
+opengl_sources = [
+  'gstopengl.c',
+  'gstglbasemixer.c',
+  'gstgluploadelement.c',
+  'gstgldownloadelement.c',
+  'gstglcolorconvertelement.c',
+  'gstglfilterbin.c',
+  'gstglmixerbin.c',
+  'gstglsinkbin.c',
+  'gstglsrcbin.c',
+  'gstglimagesink.c',
+  'gstglfiltercube.c',
+  'gstgleffects.c',
+  'effects/gstgleffectscurves.c',
+  'effects/gstgleffectssources.c',
+  'effects/gstgleffectidentity.c',
+  'effects/gstgleffectmirror.c',
+  'effects/gstgleffectsqueeze.c',
+  'effects/gstgleffectstretch.c',
+  'effects/gstgleffectfisheye.c',
+  'effects/gstgleffecttwirl.c',
+  'effects/gstgleffectbulge.c',
+  'effects/gstgleffecttunnel.c',
+  'effects/gstgleffectsquare.c',
+  'effects/gstgleffectlumatocurve.c',
+  'effects/gstgleffectrgbtocurve.c',
+  'effects/gstgleffectsin.c',
+  'effects/gstgleffectxray.c',
+  'effects/gstgleffectglow.c',
+  'effects/gstgleffectblur.c',
+  'effects/gstgleffectsobel.c',
+  'effects/gstgleffectlaplacian.c',
+  'gstglcolorscale.c',
+  'gstglcolorbalance.c',
+  'gstglmixer.c',
+  'gstglvideomixer.c',
+  'gstglfiltershader.c',
+  'gstglfilterapp.c',
+  'gstglviewconvert.c',
+  'gstglstereosplit.c',
+  'gstgldeinterlace.c',
+  'gstglstereomix.c',
+  'gltestsrc.c',
+  'gstgltestsrc.c',
+]
+
+if build_gstgl and gstgl_dep.found()
+  optional_deps = []
+  opengl_defines = ['-DGST_USE_UNSTABLE_API']
+
+  if gl_dep.found() # have desktop GL
+    opengl_sources += [
+      'gstglfilterglass.c',
+      'gstglmosaic.c',
+    ]
+  endif
+
+  graphene_dep = dependency('graphene-1.0', version : '>=1.4.0', required : false)
+  if graphene_dep.found()
+    optional_deps += graphene_dep
+    opengl_defines += '-DHAVE_GRAPHENE=1'
+    opengl_sources += [
+      'gstgltransformation.c',
+      'gstglvideoflip.c',
+    ]
+  endif
+
+  png_dep = dependency('libpng', version : '>=1.0', required : false)
+  jpeg_dep = cc.find_library('jpeg-mmx', required : false)
+  if not jpeg_dep.found()
+    jpeg_dep = cc.find_library('jpeg', required : false)
+  endif
+
+  if png_dep.found()
+    optional_deps += png_dep
+    opengl_defines += '-DHAVE_PNG=1'
+    opengl_sources += [
+      'gstgldifferencematte.c',
+    ]
+    if jpeg_dep.found()
+      optional_deps += jpeg_dep
+      opengl_defines += '-DHAVE_JPEG=1'
+      opengl_sources += [
+        'gstgloverlay.c',
+      ]
+    endif
+  endif
+
+  if false # have cocoa
+    opengl_sources += [
+      'caopengllayersink.m',
+    ]
+  endif
+
+  if x11_dep.found()
+    # for XInitThreads()
+    optional_deps += x11_dep
+  endif
+
+  gstopengl = library('gstopengl',
+    opengl_sources,
+    c_args : gst_plugins_bad_args + opengl_defines,
+    link_args : noseh_link_args,
+    include_directories : [configinc],
+    dependencies : [gstgl_dep, gstbadvideo_dep, gstbadbase_dep, gstvideo_dep,
+                    gstbase_dep, libm] + optional_deps,
+    install : true,
+    install_dir : plugins_install_dir,
+  )
+endif
diff --git a/ext/meson.build b/ext/meson.build
index 1809645b9..f91a7372a 100644
--- a/ext/meson.build
+++ b/ext/meson.build
@@ -14,7 +14,7 @@ subdir('faac')
 subdir('faad')
 subdir('flite')
 subdir('fluidsynth')
-#subdir('gl')
+subdir('gl')
 #subdir('gme')
 #subdir('gsm')
 #subdir('gtk')