[PATCH v4 2/2] libcamera: pipelines: Draw control delays from CameraSensor properties

[Daniel Scally]

Rather than hard coding default delays for control values in the
pipeline handlers, pick up the ones defined in the CameraSensor
properties.

Signed-off-by: Daniel Scally <dan.scally at ideasonboard.com>
---
Changes in v4:

	- Used the struct reference rather than values directly

Changes in v3:

	- Fixed some broken alignment 

Changes in v2:

	- Switched to use the new getSensorDelays() function

 src/libcamera/pipeline/ipu3/ipu3.cpp     | 10 +++-------
 src/libcamera/pipeline/rkisp1/rkisp1.cpp | 11 ++++-------
 src/libcamera/pipeline/simple/simple.cpp |  6 ++++--
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 0069d5e2..f4e33830 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -1077,14 +1077,10 @@ int PipelineHandlerIPU3::registerCameras()
 		if (ret)
 			continue;
 
-		/*
-		 * \todo Read delay values from the sensor itself or from a
-		 * a sensor database. For now use generic values taken from
-		 * the Raspberry Pi and listed as 'generic values'.
-		 */
+		const CameraSensorProperties::SensorDelays &delays = cio2->sensor()->sensorDelays();
 		std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
-			{ V4L2_CID_ANALOGUE_GAIN, { 1, false } },
-			{ V4L2_CID_EXPOSURE, { 2, false } },
+			{ V4L2_CID_ANALOGUE_GAIN, { delays.gainDelay, false } },
+			{ V4L2_CID_EXPOSURE, { delays.exposureDelay, false } },
 		};
 
 		data->delayedCtrls_ =
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 6c6d711f..9118d893 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -24,6 +24,7 @@
 #include <libcamera/control_ids.h>
 #include <libcamera/formats.h>
 #include <libcamera/framebuffer.h>
+#include <libcamera/property_ids.h>
 #include <libcamera/request.h>
 #include <libcamera/stream.h>
 #include <libcamera/transform.h>
@@ -1239,14 +1240,10 @@ int PipelineHandlerRkISP1::createCamera(MediaEntity *sensor)
 	/* Initialize the camera properties. */
 	data->properties_ = data->sensor_->properties();
 
-	/*
-	 * \todo Read delay values from the sensor itself or from a
-	 * a sensor database. For now use generic values taken from
-	 * the Raspberry Pi and listed as generic values.
-	 */
+	const CameraSensorProperties::SensorDelays &delays = data->sensor_->sensorDelays();
 	std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
-		{ V4L2_CID_ANALOGUE_GAIN, { 1, false } },
-		{ V4L2_CID_EXPOSURE, { 2, false } },
+		{ V4L2_CID_ANALOGUE_GAIN, { delays.gainDelay, false } },
+		{ V4L2_CID_EXPOSURE, { delays.exposureDelay, false } },
 	};
 
 	data->delayedCtrls_ =
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index 41fdf84c..9e759bf8 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -26,6 +26,7 @@
 
 #include <libcamera/camera.h>
 #include <libcamera/control_ids.h>
+#include <libcamera/property_ids.h>
 #include <libcamera/request.h>
 #include <libcamera/stream.h>
 
@@ -1290,9 +1291,10 @@ int SimplePipelineHandler::configure(Camera *camera, CameraConfiguration *c)
 	if (outputCfgs.empty())
 		return 0;
 
+	const CameraSensorProperties::SensorDelays &delays = data->sensor_->sensorDelays();
 	std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
-		{ V4L2_CID_ANALOGUE_GAIN, { 2, false } },
-		{ V4L2_CID_EXPOSURE, { 2, false } },
+		{ V4L2_CID_ANALOGUE_GAIN, { delays.gainDelay, false } },
+		{ V4L2_CID_EXPOSURE, { delays.exposureDelay, false } },
 	};
 	data->delayedCtrls_ =
 		std::make_unique<DelayedControls>(data->sensor_->device(),
-- 
2.34.1