libcamera: pipeline: Cast to derived pipeline handler with helpers

Replace manual static casts from the PipelineHandler pointer to a
derived class pointer with helper functions in the camera data classes.
This simplifies code accessing the pipeline from the camera data.

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

2 files changed, 17 insertions, 13 deletions

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 0bbe9ed8..98008862 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -87,6 +87,7 @@ public:
 	{
 	}
 
+	PipelineHandlerRkISP1 *pipe();
 	int loadIPA(unsigned int hwRevision);
 
 	Stream mainPathStream_;
@@ -304,6 +305,11 @@ RkISP1FrameInfo *RkISP1Frames::find(Request *request)
 	return nullptr;
 }
 
+PipelineHandlerRkISP1 *RkISP1CameraData::pipe()
+{
+	return static_cast<PipelineHandlerRkISP1 *>(Camera::Private::pipe());
+}
+
 int RkISP1CameraData::loadIPA(unsigned int hwRevision)
 {
 	ipa_ = IPAManager::createIPA<ipa::rkisp1::IPAProxyRkISP1>(pipe(), 1, 1);
@@ -332,8 +338,7 @@ void RkISP1CameraData::queueFrameAction(unsigned int frame,
 		break;
 	}
 	case ipa::rkisp1::ActionParamFilled: {
-		PipelineHandlerRkISP1 *pipe =
-			static_cast<PipelineHandlerRkISP1 *>(this->pipe());
+		PipelineHandlerRkISP1 *pipe = RkISP1CameraData::pipe();
 		RkISP1FrameInfo *info = frameInfo_.find(frame);
 		if (!info)
 			break;
@@ -360,9 +365,6 @@ void RkISP1CameraData::queueFrameAction(unsigned int frame,
 
 void RkISP1CameraData::metadataReady(unsigned int frame, const ControlList &metadata)
 {
-	PipelineHandlerRkISP1 *pipe =
-		static_cast<PipelineHandlerRkISP1 *>(this->pipe());
-
 	RkISP1FrameInfo *info = frameInfo_.find(frame);
 	if (!info)
 		return;
@@ -370,7 +372,7 @@ void RkISP1CameraData::metadataReady(unsigned int frame, const ControlList &meta
 	info->request->metadata().merge(metadata);
 	info->metadataProcessed = true;
 
-	pipe->tryCompleteRequest(info->request);
+	pipe()->tryCompleteRequest(info->request);
 }
 
 RkISP1CameraConfiguration::RkISP1CameraConfiguration(Camera *camera,
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index ef7687ea..8ff95472 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -155,6 +155,7 @@ public:
 			 MediaEntity *sensor);
 
 	bool isValid() const { return sensor_ != nullptr; }
+	SimplePipelineHandler *pipe();
 
 	int init();
 	int setupLinks();
@@ -352,11 +353,14 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,
 			       [](const Entity &e) { return e.entity->name(); });
 }
 
+SimplePipelineHandler *SimpleCameraData::pipe()
+{
+	return static_cast<SimplePipelineHandler *>(Camera::Private::pipe());
+}
+
 int SimpleCameraData::init()
 {
-	SimplePipelineHandler *pipe =
-		static_cast<SimplePipelineHandler *>(this->pipe());
-	SimpleConverter *converter = pipe->converter();
+	SimpleConverter *converter = pipe()->converter();
 	int ret;
 
 	/*
@@ -480,8 +484,7 @@ int SimpleCameraData::setupLinks()
 int SimpleCameraData::setupFormats(V4L2SubdeviceFormat *format,
 				   V4L2Subdevice::Whence whence)
 {
-	SimplePipelineHandler *pipe =
-		static_cast<SimplePipelineHandler *>(this->pipe());
+	SimplePipelineHandler *pipe = SimpleCameraData::pipe();
 	int ret;
 
 	/*
@@ -582,8 +585,7 @@ CameraConfiguration::Status SimpleCameraConfiguration::validate()
 	}
 
 	/* Adjust the requested streams. */
-	SimplePipelineHandler *pipe = static_cast<SimplePipelineHandler *>(data_->pipe());
-	SimpleConverter *converter = pipe->converter();
+	SimpleConverter *converter = data_->pipe()->converter();
 
 	/*
 	 * Enable usage of the converter when producing multiple streams, as