[libcamera-devel] [PATCH 2/3] ipa: ipu3: Mark the beginning and end of a frame

[Umang Jain]

From: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>

Introduce the skeleton for two functions which will be used to
instantiate a frame context, and do everything needed when a frame is
received. Do the same for the other end, once the algorithms have run
and updated the frame context to later deallocate the corresponding
frame context.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
Signed-off-by: Umang Jain <umang.jain at ideasonboard.com>
---
 src/ipa/ipu3/ipu3.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp
index 81788b9a..3d5c5706 100644
--- a/src/ipa/ipu3/ipu3.cpp
+++ b/src/ipa/ipu3/ipu3.cpp
@@ -163,6 +163,14 @@ private:
 	void setControls(unsigned int frame);
 	void calculateBdsGrid(const Size &bdsOutputSize);
 
+	/*
+	 * Internal events that mark the beginning of processing a new frame
+	 * to the point that it has successfully completed processing its
+	 * statistics.
+	 */
+	void frameStarted(const uint32_t frame);
+	void frameCompleted(const uint32_t frame);
+
 	std::map<unsigned int, MappedFrameBuffer> buffers_;
 
 	ControlInfoMap ctrls_;
@@ -491,6 +499,14 @@ void IPAIPU3::unmapBuffers(const std::vector<unsigned int> &ids)
 	}
 }
 
+void IPAIPU3::frameStarted([[maybe_unused]] const uint32_t frame)
+{
+}
+
+void IPAIPU3::frameCompleted([[maybe_unused]] const uint32_t frame)
+{
+}
+
 /**
  * \brief Prepare the ISP to process the Request
  * \param[in] frame The frame number
@@ -549,6 +565,8 @@ void IPAIPU3::processControls(const uint32_t frame,
 			      [[maybe_unused]] const ControlList &controls)
 {
 	/* \todo Start processing for 'frame' based on 'controls'. */
+
+	frameStarted(frame);
 }
 
 /**
@@ -620,6 +638,8 @@ void IPAIPU3::parseStatistics(unsigned int frame,
 	 */
 
 	statsBufferReady.emit(frame, ctrls);
+
+	frameCompleted(frame);
 }
 
 /**
-- 
2.31.0