[v7,10/12] libcamera: camera: Pre-process AeEnable control
diff mbox series

Message ID 20250110235737.1524733-11-paul.elder@ideasonboard.com
State Superseded
Headers show
Series
  • AEGC controls
Related show

Commit Message

Paul Elder Jan. 10, 2025, 11:57 p.m. UTC
Handle the AeEnable under the hood in the Camera class, such that
AeEnable activates ExposureTimeMode and AnalogueGain together. This
allows applications the convenience of setting auto/manual mode of all
of the AE-related controls, as well as protecting applications against a
nasty behavior change if an aperture control is added in the future.
This also moves common handling code out of the IPA.

While we also want to inject AeEnable in Camera::controls() so that IPAs
don't have to report it, it is technically difficult at the moment as
ControlInfoMaps are not easily modifiable.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>

---
Changes in v7:
- check that the camera supports the ae sub-controls before setting them
  when handling AeEnable

New in v6
---
 src/libcamera/camera.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

Laurent Pinchart Jan. 12, 2025, 8:13 p.m. UTC | #1
Hi Paul,

Thank you for the patch.

On Fri, Jan 10, 2025 at 05:57:35PM -0600, Paul Elder wrote:
> Handle the AeEnable under the hood in the Camera class, such that
> AeEnable activates ExposureTimeMode and AnalogueGain together. This
> allows applications the convenience of setting auto/manual mode of all
> of the AE-related controls, as well as protecting applications against a
> nasty behavior change if an aperture control is added in the future.
> This also moves common handling code out of the IPA.
> 
> While we also want to inject AeEnable in Camera::controls() so that IPAs
> don't have to report it, it is technically difficult at the moment as
> ControlInfoMaps are not easily modifiable.
> 
> Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
> Changes in v7:
> - check that the camera supports the ae sub-controls before setting them
>   when handling AeEnable
> 
> New in v6
> ---
>  src/libcamera/camera.cpp | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
> index 69a7ee535..56c585199 100644
> --- a/src/libcamera/camera.cpp
> +++ b/src/libcamera/camera.cpp
> @@ -19,6 +19,7 @@
>  #include <libcamera/base/thread.h>
>  
>  #include <libcamera/color_space.h>
> +#include <libcamera/control_ids.h>
>  #include <libcamera/framebuffer_allocator.h>
>  #include <libcamera/request.h>
>  #include <libcamera/stream.h>
> @@ -1325,6 +1326,25 @@ int Camera::queueRequest(Request *request)
>  		}
>  	}
>  
> +	/* Pre-process AeEnable. */
> +	ControlList &controls = request->controls();
> +	const auto &aeEnable = controls.get(controls::AeEnable);
> +	if (aeEnable) {
> +		if (_d()->controlInfo_.count(controls::AnalogueGainMode.id()) &&
> +		    !controls.contains(controls::AnalogueGainMode.id())) {
> +			controls.set(controls::AnalogueGainMode,
> +				     *aeEnable ? controls::AnalogueGainModeAuto
> +					       : controls::AnalogueGainModeManual);
> +		}
> +
> +		if (_d()->controlInfo_.count(controls::ExposureTimeMode.id()) &&
> +		    !controls.contains(controls::ExposureTimeMode.id())) {
> +			controls.set(controls::ExposureTimeMode,
> +				     *aeEnable ? controls::ExposureTimeModeAuto
> +					       : controls::ExposureTimeModeManual);
> +		}
> +	}
> +
>  	d->pipe_->invokeMethod(&PipelineHandler::queueRequest,
>  			       ConnectionTypeQueued, request);
>
Stefan Klug Jan. 13, 2025, 11:03 a.m. UTC | #2
Hi Paul,

Thank you for the patch.

On Fri, Jan 10, 2025 at 05:57:35PM -0600, Paul Elder wrote:
> Handle the AeEnable under the hood in the Camera class, such that
> AeEnable activates ExposureTimeMode and AnalogueGain together. This
> allows applications the convenience of setting auto/manual mode of all
> of the AE-related controls, as well as protecting applications against a
> nasty behavior change if an aperture control is added in the future.
> This also moves common handling code out of the IPA.
> 
> While we also want to inject AeEnable in Camera::controls() so that IPAs
> don't have to report it, it is technically difficult at the moment as
> ControlInfoMaps are not easily modifiable.
> 
> Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
> 
> ---
> Changes in v7:
> - check that the camera supports the ae sub-controls before setting them
>   when handling AeEnable
> 
> New in v6
> ---
>  src/libcamera/camera.cpp | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
> index 69a7ee535..56c585199 100644
> --- a/src/libcamera/camera.cpp
> +++ b/src/libcamera/camera.cpp
> @@ -19,6 +19,7 @@
>  #include <libcamera/base/thread.h>
>  
>  #include <libcamera/color_space.h>
> +#include <libcamera/control_ids.h>
>  #include <libcamera/framebuffer_allocator.h>
>  #include <libcamera/request.h>
>  #include <libcamera/stream.h>
> @@ -1325,6 +1326,25 @@ int Camera::queueRequest(Request *request)
>  		}
>  	}
>  
> +	/* Pre-process AeEnable. */
> +	ControlList &controls = request->controls();
> +	const auto &aeEnable = controls.get(controls::AeEnable);
> +	if (aeEnable) {
> +		if (_d()->controlInfo_.count(controls::AnalogueGainMode.id()) &&
> +		    !controls.contains(controls::AnalogueGainMode.id())) {
> +			controls.set(controls::AnalogueGainMode,
> +				     *aeEnable ? controls::AnalogueGainModeAuto
> +					       : controls::AnalogueGainModeManual);
> +		}
> +
> +		if (_d()->controlInfo_.count(controls::ExposureTimeMode.id()) &&
> +		    !controls.contains(controls::ExposureTimeMode.id())) {
> +			controls.set(controls::ExposureTimeMode,
> +				     *aeEnable ? controls::ExposureTimeModeAuto
> +					       : controls::ExposureTimeModeManual);
> +		}
> +	}
> +

It feels a bit bad to modify the controls list that was filled by the
user. But there is no way around it atm. So

Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com> 

Cheers,
Stefan

>  	d->pipe_->invokeMethod(&PipelineHandler::queueRequest,
>  			       ConnectionTypeQueued, request);
>  
> -- 
> 2.39.2
>

Patch
diff mbox series

diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 69a7ee535..56c585199 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -19,6 +19,7 @@ 
 #include <libcamera/base/thread.h>
 
 #include <libcamera/color_space.h>
+#include <libcamera/control_ids.h>
 #include <libcamera/framebuffer_allocator.h>
 #include <libcamera/request.h>
 #include <libcamera/stream.h>
@@ -1325,6 +1326,25 @@  int Camera::queueRequest(Request *request)
 		}
 	}
 
+	/* Pre-process AeEnable. */
+	ControlList &controls = request->controls();
+	const auto &aeEnable = controls.get(controls::AeEnable);
+	if (aeEnable) {
+		if (_d()->controlInfo_.count(controls::AnalogueGainMode.id()) &&
+		    !controls.contains(controls::AnalogueGainMode.id())) {
+			controls.set(controls::AnalogueGainMode,
+				     *aeEnable ? controls::AnalogueGainModeAuto
+					       : controls::AnalogueGainModeManual);
+		}
+
+		if (_d()->controlInfo_.count(controls::ExposureTimeMode.id()) &&
+		    !controls.contains(controls::ExposureTimeMode.id())) {
+			controls.set(controls::ExposureTimeMode,
+				     *aeEnable ? controls::ExposureTimeModeAuto
+					       : controls::ExposureTimeModeManual);
+		}
+	}
+
 	d->pipe_->invokeMethod(&PipelineHandler::queueRequest,
 			       ConnectionTypeQueued, request);