meson: ipa, proxy: Generate headers and proxy with mojo

Run mojo from meson to generate the header, serializer, and proxy files
for every pipeline's mojom data definition file.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/libcamera/meson.build

@@ -60,6 +60,7 @@ libcamera_sources = files([
 ])
 
 libcamera_sources += libcamera_public_headers
+libcamera_sources += libcamera_generated_ipa_headers
 libcamera_sources += libcamera_tracepoint_header
 
 includes = [

src/libcamera/proxy/meson.build

@@ -4,3 +4,21 @@ libcamera_sources += files([
     'ipa_proxy_linux.cpp',
     'ipa_proxy_thread.cpp',
 ])
+
+# generate {pipeline}_ipa_proxy.cpp
+foreach mojom : ipa_mojoms
+    proxy = custom_target(mojom['name'] + '_proxy_cpp',
+                          input : mojom['mojom'],
+                          output : mojom['name'] + '_ipa_proxy.cpp',
+                          depends : mojom_templates,
+                          command : [
+                              mojom_generator, 'generate',
+                              '-g', 'libcamera',
+                              '--bytecode_path', mojom_templates_dir,
+                              '--libcamera_generate_proxy_cpp',
+                              '--libcamera_output_path=@OUTPUT@',
+                              './' + '@INPUT@'
+                          ])
+
+    libcamera_sources += proxy
+endforeach

src/libcamera/proxy/worker/meson.build

@@ -6,8 +6,23 @@ ipa_proxy_sources = [
 
 proxy_install_dir = join_paths(get_option('libexecdir'), 'libcamera')
 
-foreach t : ipa_proxy_sources
-    proxy = executable(t[0], t[1],
+# generate {pipeline}_ipa_proxy_worker.cpp
+foreach mojom : ipa_mojoms
+    worker = custom_target(mojom['name'] + '_proxy_worker',
+                           input : mojom['mojom'],
+                           output : mojom['name'] + '_ipa_proxy_worker.cpp',
+                           depends : mojom_templates,
+                           command : [
+                               mojom_generator, 'generate',
+                               '-g', 'libcamera',
+                               '--bytecode_path', mojom_templates_dir,
+                               '--libcamera_generate_proxy_worker',
+                               '--libcamera_output_path=@OUTPUT@',
+                               './' + '@INPUT@'
+                           ])
+
+    proxy = executable(mojom['name'] + '_ipa_proxy',
+                       [worker, libcamera_generated_ipa_headers],
                        install : true,
                        install_dir : proxy_install_dir,
                        dependencies : libcamera_dep)