libcamera: control_ids: Define draft controls

libcamera is in the process of defining its own set of controls
to enable applications to control the image capture process and
return information on the captured frames.

To temporarily close the gap in the Android camera HAL and support all
controls required in the LIMITED hardware level, define a set of Draft
controls whose values are taken from their Android definition, in order
to allow pipeline handlers to support Android.

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

1 files changed, 245 insertions, 0 deletions

diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml
index 4c415545..26b93a65 100644
--- a/src/libcamera/control_ids.yaml
+++ b/src/libcamera/control_ids.yaml
@@ -284,4 +284,249 @@ controls:
         order in an array of 9 floating point values.
 
       size: [3x3]
+
+  - AePrecaptureTrigger:
+      type: int32_t
+      draft: true
+      description: |
+        Control for AE metering trigger. Currently identical to
+        ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER.
+
+        Whether the camera device will trigger a precapture metering sequence
+        when it processes this request.
+      enum:
+        - name: AePrecaptureTriggerIdle
+          value: 0
+          description: The trigger is idle.
+        - name: AePrecaptureTriggerStart
+          value: 1
+          description: The pre-capture AE metering is started by the camera.
+        - name: AePrecaptureTriggerCancel
+          value: 2
+          description: |
+            The camera will cancel any active or completed metering sequence.
+            The AE algorithm is reset to its initial state.
+
+  - AfTrigger:
+      type: int32_t
+      draft: true
+      description: |
+       Control for AF trigger. Currently identical to
+       ANDROID_CONTROL_AF_TRIGGER.
+
+        Whether the camera device will trigger autofocus for this request.
+      enum:
+        - name: AfTriggerIdle
+          value: 0
+          description: The trigger is idle.
+        - name: AfTriggerStart
+          value: 1
+          description: The AF routine is started by the camera.
+        - name: AfTriggerCancel
+          value: 2
+          description: |
+            The camera will cancel any active trigger and the AF routine is
+            reset to its initial state.
+
+  - NoiseReductionMode:
+      type: int32_t
+      draft: true
+      description: |
+       Control to select the noise reduction algorithm mode. Currently
+       identical to ANDROID_NOISE_REDUCTION_MODE.
+
+        Mode of operation for the noise reduction algorithm.
+      enum:
+        - name: NoiseReductionModeOff
+          value: 0
+          description: No noise reduction is applied
+        - name: NoiseReductionModeFast
+          value: 1
+          description: |
+            Noise reduction is applied without reducing the frame rate.
+        - name: NoiseReductionModeHighQuality
+          value: 2
+          description: |
+            High quality noise reduction at the expense of frame rate.
+        - name: NoiseReductionModeMinimal
+          value: 3
+          description: |
+            Minimal noise reduction is applied without reducing the frame rate.
+        - name: NoiseReductionModeZSL
+          value: 4
+          description: |
+            Noise reduction is applied at different levels to different streams.
+
+  - ColorCorrectionAberrationMode:
+      type: int32_t
+      draft: true
+      description: |
+       Control to select the color correction aberration mode. Currently
+       identical to ANDROID_COLOR_CORRECTION_ABERRATION_MODE.
+
+        Mode of operation for the chromatic aberration correction algorithm.
+      enum:
+        - name: ColorCorrectionAberrationOff
+          value: 0
+          description: No aberration correction is applied.
+        - name: ColorCorrectionAberrationFast
+          value: 1
+          description: Aberration correction will not slow down the frame rate.
+        - name: ColorCorrectionAberrationHighQuality
+          value: 2
+          description: |
+            High quality aberration correction which might reduce the frame
+            rate.
+
+  - AeState:
+      type: int32_t
+      draft: true
+      description: |
+       Control to report the current AE algorithm state. Currently identical to
+       ANDROID_CONTROL_AE_STATE.
+
+        Current state of the AE algorithm.
+      enum:
+        - name: AeStateInactive
+          value: 0
+          description: The AE algorithm is inactive.
+        - name: AeStateSearching
+          value: 1
+          description: The AE algorithm has not converged yet.
+        - name: AeStateConverged
+          value: 2
+          description: The AE algorithm has converged.
+        - name: AeStateLocked
+          value: 3
+          description: The AE algorithm is locked.
+        - name: AeStateFlashRequired
+          value: 4
+          description: The AE algorithm would need a flash for good results
+        - name: AeStatePrecapture
+          value: 5
+          description: |
+            The AE algorithm has started a pre-capture metering session.
+            \sa AePrecaptureTrigger
+
+  - AfState:
+      type: int32_t
+      draft: true
+      description: |
+       Control to report the current AF algorithm state. Currently identical to
+       ANDROID_CONTROL_AF_STATE.
+
+        Current state of the AF algorithm.
+      enum:
+        - name: AfStateInactive
+          value: 0
+          description: The AF algorithm is inactive.
+        - name: AfStatePassiveScan
+          value: 1
+          description: |
+            AF is performing a passive scan of the scene in continuous
+            auto-focus mode.
+        - name: AfStatePassiveFocused
+          value: 2
+          description: |
+            AF believes the scene is in focus, but might restart scanning.
+        - name: AfStateActiveScan
+          value: 3
+          description: |
+            AF is performing a scan triggered by an AF trigger request.
+            \sa AfTrigger
+        - name: AfStateFocusedLock
+          value: 4
+          description: |
+            AF believes has focused correctly and has locked focus.
+        - name: AfStateNotFocusedLock
+          value: 5
+          description: |
+            AF has not been able to focus and has locked.
+        - name: AfStatePassiveUnfocused
+          value: 6
+          description: |
+            AF has completed a passive scan without finding focus.
+
+  - AwbState:
+      type: int32_t
+      draft: true
+      description: |
+       Control to report the current AWB algorithm state. Currently identical
+       to ANDROID_CONTROL_AWB_STATE.
+
+        Current state of the AWB algorithm.
+      enum:
+        - name: AwbStateInactive
+          value: 0
+          description: The AWB algorithm is inactive.
+        - name: AwbStateSearching
+          value: 1
+          description: The AWB algorithm has not converged yet.
+        - name: AwbConverged
+          value: 2
+          description: The AWB algorithm has converged.
+        - name: AwbLocked
+          value: 3
+          description: The AWB algorithm is locked.
+
+  - SensorTimestamp:
+      type: int64_t
+      draft: true
+      description: |
+       Control to report the start of exposure of the first row of the captured
+       image. Currently identical to ANDROID_SENSOR_TIMESTAMP.
+
+  - SensorRollingShutterSkew:
+      type: int64_t
+      draft: true
+      description: |
+       Control to report the time between the start of exposure of the first
+       row and the start of exposure of the last row. Currently identical to
+       ANDROID_SENSOR_ROLLING_SHUTTER_SKEW
+
+  - LensShadingMapMode:
+      type: int32_t
+      draft: true
+      description: |
+       Control to report if the lens shading map is available. Currently
+       identical to ANDROID_STATISTICS_LENS_SHADING_MAP_MODE.
+      enum:
+        - name: LensShadingMapModeOff
+          value: 0
+          description: No lens shading map mode is available.
+        - name: LensShadingMapModeOn
+          value: 1
+          description: The lens shading map mode is available.
+
+  - SceneFlicker:
+      type: int32_t
+      draft: true
+      description: |
+       Control to report the detected scene light frequency. Currently
+       identical to ANDROID_STATISTICS_SCENE_FLICKER.
+      enum:
+        - name: SceneFickerOff
+          value: 0
+          description: No flickering detected.
+        - name: SceneFicker50Hz
+          value: 1
+          description: 50Hz flickering detected.
+        - name: SceneFicker60Hz
+          value: 2
+          description: 60Hz flickering detected.
+
+  - PipelineDepth:
+      type: int32_t
+      draft: true
+      description: |
+        Specifies the number of pipeline stages the frame went through from when
+        it was exposed to when the final completed result was available to the
+        framework. Always less than or equal to PipelineMaxDepth. Currently
+        identical to ANDROID_REQUEST_PIPELINE_DEPTH.
+
+        The typical value for this control is 3 as a frame is first exposed,
+        captured and then processed in a single pass through the ISP. Any
+        additional processing step performed after the ISP pass (in example face
+        detection, additional format conversions etc) count as an additional
+        pipeline stage.
 ...