utils: ipc: add templates for code generation for IPC mechanism

Add templates to mojo to generate code for the IPC mechanism. These
templates generate:
- module header
- module serializer
- IPA proxy cpp, header, and worker

Given an input data definition mojom file for a pipeline.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/utils/ipc/generators/libcamera_templates/definition_functions.tmpl b/utils/ipc/generators/libcamera_templates/definition_functions.tmpl
new file mode 100644
index 00000000..cdd75f89
--- /dev/null
+++ b/utils/ipc/generators/libcamera_templates/definition_functions.tmpl
@@ -0,0 +1,53 @@
+{#-
+ # SPDX-License-Identifier: LGPL-2.1-or-later
+ # Copyright (C) 2020, Google Inc.
+-#}
+
+{#
+ # \brief Generate enum definition
+ #
+ # \param enum Enum object whose definition is to be generated
+ #}
+{%- macro define_enum(enum) -%}
+enum {{enum.mojom_name}} {
+{%- for field in enum.fields %}
+	{{field.mojom_name}} = {{field.numeric_value}},
+{%- endfor %}
+};
+{%- endmacro -%}
+
+{#
+ # \brief Generate struct definition
+ #
+ # \param struct Struct object whose definition is to be generated
+ #}
+{%- macro define_struct(struct) -%}
+struct {{struct.mojom_name}}
+{
+public:
+	{{struct.mojom_name}}() {%- if struct|has_default_fields %}
+		:{% endif %}
+{%- for field in struct.fields|with_default_values -%}
+{{" " if loop.first}}{{field.mojom_name}}({{field|default_value}}){{", " if not loop.last}}
+{%- endfor %}
+	{
+	}
+
+	{{struct.mojom_name}}(
+{%- for field in struct.fields -%}
+{{"const " if not field|is_pod}}{{field|name}} {{"&" if not field|is_pod}}_{{field.mojom_name}}{{", " if not loop.last}}
+{%- endfor -%}
+)
+		:
+{%- for field in struct.fields -%}
+{{" " if loop.first}}{{field.mojom_name}}(_{{field.mojom_name}}){{", " if not loop.last}}
+{%- endfor %}
+	{
+	}
+{% for field in struct.fields %}
+	{{field|name}} {{field.mojom_name}};
+{%- endfor %}
+};
+{%- endmacro -%}
+
+