[libcamera-devel] [PATCH v4 04/11] libcamera: request: Add meta data information

[Niklas Söderlund]

A new ControlList container is needed to hold meta data coming out of
the IPA. The list of supported controls in this list is expected to grow
and for now do not add a validator for the list.

Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
---
 include/libcamera/request.h |  2 ++
 src/libcamera/request.cpp   | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/libcamera/request.h b/include/libcamera/request.h
index e3db5243aaf3cf30..d3435d134c560f44 100644
--- a/include/libcamera/request.h
+++ b/include/libcamera/request.h
@@ -37,6 +37,7 @@ public:
 	~Request();
 
 	ControlList &controls() { return *controls_; }
+	ControlList &metaData() { return *metaData_; }
 	const std::map<Stream *, Buffer *> &buffers() const { return bufferMap_; }
 	int addBuffer(std::unique_ptr<Buffer> buffer);
 	Buffer *findBuffer(Stream *stream) const;
@@ -58,6 +59,7 @@ private:
 	Camera *camera_;
 	CameraControlValidator *validator_;
 	ControlList *controls_;
+	ControlList *metaData_;
 	std::map<Stream *, Buffer *> bufferMap_;
 	std::unordered_set<Buffer *> pending_;
 
diff --git a/src/libcamera/request.cpp b/src/libcamera/request.cpp
index 19f6d0b9a0aeb03c..1e1418a9b57393b3 100644
--- a/src/libcamera/request.cpp
+++ b/src/libcamera/request.cpp
@@ -65,6 +65,11 @@ Request::Request(Camera *camera, uint64_t cookie)
 	 */
 	validator_ = new CameraControlValidator(camera);
 	controls_ = new ControlList(validator_);
+
+	/**
+	 * \todo: Add a validator for meta data controls.
+	 */
+	metaData_ = new ControlList(nullptr);
 }
 
 Request::~Request()
@@ -74,6 +79,7 @@ Request::~Request()
 		delete buffer;
 	}
 
+	delete metaData_;
 	delete controls_;
 	delete validator_;
 }
@@ -161,6 +167,12 @@ Buffer *Request::findBuffer(Stream *stream) const
 	return it->second;
 }
 
+/**
+ * \fn Request::metaData()
+ * \brief Retrieve the request's meta data
+ * \return The meta data associated with the request
+ */
+
 /**
  * \fn Request::cookie()
  * \brief Retrieve the cookie set when the request was created
-- 
2.23.0