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, 87 insertions, 0 deletions

diff --git a/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl b/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl
new file mode 100644
index 00000000..ebe811fa
--- /dev/null
+++ b/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl
@@ -0,0 +1,87 @@
+{#-
+ # SPDX-License-Identifier: LGPL-2.1-or-later
+ # Copyright (C) 2020, Google Inc.
+-#}
+{%- import "definition_functions.tmpl" as funcs -%}
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * {{module_name}}_ipa_interface.h - Image Processing Algorithm interface for {{module_name}}
+ *
+ * This file is auto-generated. Do not edit.
+ */
+
+#ifndef __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__
+#define __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__
+
+#include <libcamera/ipa/core_ipa_interface.h>
+#include <libcamera/ipa/ipa_interface.h>
+
+{% if has_map %}#include <map>{% endif %}
+{% if has_array %}#include <vector>{% endif %}
+
+namespace libcamera {
+{%- if has_namespace %}
+{% for ns in namespace %}
+namespace {{ns}} {
+{% endfor %}
+{%- endif %}
+
+{% for const in consts %}
+const {{const.kind|name}} {{const.mojom_name}} = {{const.value}};
+{% endfor %}
+
+enum class {{cmd_enum_name}} {
+	Exit = 0,
+{%- for method in interface_main.methods %}
+	{{method.mojom_name|cap}} = {{loop.index}},
+{%- endfor %}
+};
+
+enum class {{cmd_event_enum_name}} {
+{%- for method in interface_event.methods %}
+	{{method.mojom_name|cap}} = {{loop.index}},
+{%- endfor %}
+};
+
+{% for enum in enums %}
+{{funcs.define_enum(enum)}}
+{% endfor %}
+
+{%- for struct in structs_nonempty %}
+{{funcs.define_struct(struct)}}
+{% endfor %}
+
+{#-
+Any consts or #defines should be moved to the mojom file.
+#}
+class {{interface_name}} : public IPAInterface
+{
+public:
+{% for method in interface_main.methods %}
+	virtual {{method|method_return_value}} {{method.mojom_name}}(
+{%- for param in method|method_parameters %}
+		{{param}}{{- "," if not loop.last}}
+{%- endfor -%}
+) = 0;
+{% endfor %}
+
+{%- for method in interface_event.methods %}
+	Signal<
+{%- for param in method.parameters -%}
+		{{"const " if not param|is_pod}}{{param|name}}{{" &" if not param|is_pod}}
+		{{- ", " if not loop.last}}
+{%- endfor -%}
+> {{method.mojom_name}};
+{% endfor -%}
+};
+
+{%- if has_namespace %}
+{% for ns in namespace|reverse %}
+} /* namespace {{ns}} */
+{% endfor %}
+{%- endif %}
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__ */