[libcamera-devel] [PATCH 5/8] libcamera: pipeline: ipu3: frames: Add FrameInfo state tracing

[Kieran Bingham]

Provide a toString() function on the IPU3Frames::Info structure so that
it can be reported during debug logs.

Provide a public helper on the IPU3Frames class to report the state of
all Info structures it holds.

This method can be used when debugging the contexts that are associated
with requests.

Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
---
 src/libcamera/pipeline/ipu3/frames.cpp | 23 +++++++++++++++++++++++
 src/libcamera/pipeline/ipu3/frames.h   |  4 ++++
 2 files changed, 27 insertions(+)

diff --git a/src/libcamera/pipeline/ipu3/frames.cpp b/src/libcamera/pipeline/ipu3/frames.cpp
index 4198e2019f3f..b8b471c3c561 100644
--- a/src/libcamera/pipeline/ipu3/frames.cpp
+++ b/src/libcamera/pipeline/ipu3/frames.cpp
@@ -131,4 +131,27 @@ IPU3Frames::Info *IPU3Frames::find(FrameBuffer *buffer)
 	return nullptr;
 }
 
+const std::string IPU3Frames::Info::toString() const
+{
+	std::stringstream ss;
+
+	ss << request->toString()
+	   << (metadataProcessed ? "" : "[!metadata]")
+	   << (paramDequeued ? "" : "[!param]");
+
+	return ss.str();
+}
+
+void IPU3Frames::dump() const
+{
+	LOG(IPU3, Error) << "Frames:";
+
+	for (auto const &itInfo : frameInfo_) {
+		Info *info = itInfo.second.get();
+
+		LOG(IPU3, Error)
+			<< " - " << info->toString();
+	}
+}
+
 } /* namespace libcamera */
diff --git a/src/libcamera/pipeline/ipu3/frames.h b/src/libcamera/pipeline/ipu3/frames.h
index 4acdf48eca9d..c769ae864d32 100644
--- a/src/libcamera/pipeline/ipu3/frames.h
+++ b/src/libcamera/pipeline/ipu3/frames.h
@@ -34,6 +34,8 @@ public:
 
 		bool paramDequeued;
 		bool metadataProcessed;
+
+		const std::string toString() const;
 	};
 
 	IPU3Frames();
@@ -49,6 +51,8 @@ public:
 	Info *find(unsigned int id);
 	Info *find(FrameBuffer *buffer);
 
+	void dump() const;
+
 private:
 	std::queue<FrameBuffer *> availableParamBuffers_;
 	std::queue<FrameBuffer *> availableStatBuffers_;
-- 
2.25.1