ipa: rkisp1: Add debug metadata support to the rkisp1

Add a DebugMetadata helper to the context and add the corresponding
plumbing.  This is all that is needed to support debug metadata in an
IPA.

Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/rkisp1/ipa_context.h

@@ -17,8 +17,11 @@
 #include <libcamera/control_ids.h>
 #include <libcamera/controls.h>
 #include <libcamera/geometry.h>
+
 #include <libcamera/ipa/core_ipa_interface.h>
 
+#include "libcamera/internal/debug_controls.h"
+
 #include <libipa/camera_sensor_helper.h>
 #include <libipa/fc_queue.h>
 #include <libipa/matrix.h>
@@ -194,6 +197,8 @@ struct IPAContext {
 
 	ControlInfoMap::Map ctrlMap;
 
+	DebugMetadata debugMetadata;
+
 	/* Interface to the Camera Helper */
 	std::unique_ptr<CameraSensorHelper> camHelper;
 };

src/ipa/rkisp1/rkisp1.cpp

@@ -117,6 +117,7 @@ const IPAHwSettings ipaHwSettingsV12{
 const ControlInfoMap::Map rkisp1Controls{
 	{ &controls::AwbEnable, ControlInfo(false, true) },
 	{ &controls::ColourGains, ControlInfo(0.0f, 3.996f, 1.0f) },
+	{ &controls::DebugMetadataEnable, ControlInfo(false, true, false) },
 	{ &controls::Sharpness, ControlInfo(0.0f, 10.0f, 1.0f) },
 	{ &controls::draft::NoiseReductionMode, ControlInfo(controls::draft::NoiseReductionModeValues) },
 };
@@ -326,6 +327,7 @@ void IPARkISP1::unmapBuffers(const std::vector<unsigned int> &ids)
 void IPARkISP1::queueRequest(const uint32_t frame, const ControlList &controls)
 {
 	IPAFrameContext &frameContext = context_.frameContexts.alloc(frame);
+	context_.debugMetadata.enableByControl(controls);
 
 	for (auto const &a : algorithms()) {
 		Algorithm *algo = static_cast<Algorithm *>(a.get());
@@ -378,6 +380,7 @@ void IPARkISP1::processStats(const uint32_t frame, const uint32_t bufferId,
 
 	setControls(frame);
 
+	context_.debugMetadata.moveEntries(metadata);
 	metadataReady.emit(frame, metadata);
 }