[PATCH v1 7/7] pipeline: rpi: Handler controls::rpi::ScalerCrops

Naushir Patuck naush at raspberrypi.com
Thu Aug 8 12:23:46 CEST 2024


Handle multiple scaler crops being set through the rpi::ScalerCrops
control. We now populate the cropParams_ map in the loop where we handle
the output stream configuration items. The key of this map is the index
of the stream configuration structure set by the application. This will
also be the same index used to specify the crop rectangles through the
ScalerCrops control.

CameraData::applyScalerCrop() has been adapted to look at either
controls::ScalerCrop or controls::rpi::ScalerCrops. The former takes
priority over the latter, and if present, will apply the same scaler
crop to all output streams.

Finally return all crops through the same ScalerCrops control via
request metadata. The first configure stream's crop rectangle is also
returned via the ScalerCrop control in the request metadata.

Signed-off-by: Naushir Patuck <naush at raspberrypi.com>
---
 .../pipeline/rpi/common/pipeline_base.cpp     | 69 +++++++++++++++----
 1 file changed, 56 insertions(+), 13 deletions(-)

diff --git a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp
index a6ea4e9c47dd..b9759b682f0d 100644
--- a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp
+++ b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp
@@ -561,11 +561,28 @@ int PipelineHandlerBase::configure(Camera *camera, CameraConfiguration *config)
 	for (auto const &c : result.controlInfo)
 		ctrlMap.emplace(c.first, c.second);
 
-	if (data->cropParams_.count(0)) {
-		/* Add the ScalerCrop control limits based on the current mode. */
+	if (data->cropParams_.size()) {
+		/*
+		 * Add the ScalerCrop control limits based on the current mode and
+		 * the first configured stream.
+		 */
 		Rectangle ispMinCrop = data->scaleIspCrop(Rectangle(data->cropParams_[0].ispMinCropSize));
 		ctrlMap[&controls::ScalerCrop] = ControlInfo(ispMinCrop, data->sensorInfo_.analogCrop,
 							     data->scaleIspCrop(data->cropParams_[0].ispCrop));
+		if (data->cropParams_.size() == 2) {
+			/*
+			 * The control map for rpi::ScalerCrops has the min value
+			 * as the default crop for stream 0, max value as the default
+			 * value for stream 1.
+			 */
+			ctrlMap[&controls::rpi::ScalerCrops] =
+				ControlInfo(data->scaleIspCrop(data->cropParams_[0].ispCrop),
+					    data->scaleIspCrop(data->cropParams_[1].ispCrop),
+					    ctrlMap[&controls::ScalerCrop].def());
+		} else {
+			/* Match the same ControlInfo for rpi::ScalerCrops. */
+			ctrlMap[&controls::rpi::ScalerCrops] = ctrlMap[&controls::ScalerCrop];
+		}
 	}
 
 	data->controlInfo_ = ControlInfoMap(std::move(ctrlMap), result.controlInfo.idmap());
@@ -1292,10 +1309,29 @@ Rectangle CameraData::scaleIspCrop(const Rectangle &ispCrop) const
 
 void CameraData::applyScalerCrop(const ControlList &controls)
 {
-	const auto &scalerCrop = controls.get<Rectangle>(controls::ScalerCrop);
-	if (scalerCrop && cropParams_.count(0)) {
-		CropParams &cropParams = cropParams_[0];
-		Rectangle nativeCrop = *scalerCrop;
+	const auto &scalerCropRPi = controls.get<Span<const Rectangle>>(controls::rpi::ScalerCrops);
+	const auto &scalerCropCore = controls.get<Rectangle>(controls::ScalerCrop);
+	std::vector<Rectangle> scalerCrops;
+
+	/*
+	 * First thing to do is create a vector of crops to apply to each ISP output
+	 * based on either controls::ScalerCrop or controls::rpi::ScalerCrops if
+	 * present.
+	 *
+	 * If controls::ScalerCrop is present, apply the same crop to all ISP output
+	 * streams. Otherwise if controls::rpi::ScalerCrops, apply the given crops
+	 * to the ISP output streams, indexed by the same order in which they had
+	 * been configured. This is not the same as the ISP output index.
+	 */
+	for (unsigned int i = 0; i < cropParams_.size(); i++) {
+		if (scalerCropRPi && i < scalerCropRPi->size())
+			scalerCrops.push_back(scalerCropRPi->data()[i]);
+		else if (scalerCropCore)
+			scalerCrops.push_back(*scalerCropCore);
+	}
+
+	for (auto const &[i, scalerCrop] : utils::enumerate(scalerCrops)) {
+		Rectangle nativeCrop = scalerCrop;
 
 		if (!nativeCrop.width || !nativeCrop.height)
 			nativeCrop = { 0, 0, 1, 1 };
@@ -1311,13 +1347,13 @@ void CameraData::applyScalerCrop(const ControlList &controls)
 		 * 2. With the same mid-point, if possible.
 		 * 3. But it can't go outside the sensor area.
 		 */
-		Size minSize = cropParams.ispMinCropSize.expandedToAspectRatio(nativeCrop.size());
+		Size minSize = cropParams_[i].ispMinCropSize.expandedToAspectRatio(nativeCrop.size());
 		Size size = ispCrop.size().expandedTo(minSize);
 		ispCrop = size.centeredTo(ispCrop.center()).enclosedIn(Rectangle(sensorInfo_.outputSize));
 
-		if (ispCrop != cropParams.ispCrop) {
-			cropParams.ispCrop = ispCrop;
-			platformSetIspCrop(cropParams.ispIndex, ispCrop);
+		if (ispCrop != cropParams_[i].ispCrop) {
+			cropParams_[i].ispCrop = ispCrop;
+			platformSetIspCrop(cropParams_[i].ispIndex, ispCrop);
 		}
 	}
 }
@@ -1474,9 +1510,16 @@ void CameraData::fillRequestMetadata(const ControlList &bufferControls, Request
 	request->metadata().set(controls::SensorTimestamp,
 				bufferControls.get(controls::SensorTimestamp).value_or(0));
 
-	if (cropParams_.count(0))
-		request->metadata().set(controls::ScalerCrop,
-					scaleIspCrop(cropParams_[0].ispCrop));
+	if (cropParams_.size()) {
+		std::vector<Rectangle> crops;
+
+		for (auto const &[k, v] : cropParams_)
+			crops.push_back(scaleIspCrop(v.ispCrop));
+
+		request->metadata().set(controls::ScalerCrop, crops[0]);
+		request->metadata().set(controls::rpi::ScalerCrops,
+					Span<const Rectangle>(crops.data(), crops.size()));
+	}
 }
 
 } /* namespace libcamera */
-- 
2.34.1



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