[libcamera-devel] [PATCH v3 2/6] libcamera: properties: Define 'lens' properties
Kieran Bingham
kieran.bingham at ideasonboard.com
Tue Mar 24 15:13:42 CET 2020
Hi Jacopo,
On 09/03/2020 18:04, Jacopo Mondi wrote:
> Define properties that describe the optical characteristics of the image
> sensor.
>
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
>
> ---
> v2 -> v3:
> - Pluralize names of properties which transport multiple values
> - Again 'size' vs 'compound' is hard to guess
> ---
> src/libcamera/property_ids.yaml | 34 +++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/src/libcamera/property_ids.yaml b/src/libcamera/property_ids.yaml
> index 4cecb5ad9ac3..80f9b1b3c264 100644
> --- a/src/libcamera/property_ids.yaml
> +++ b/src/libcamera/property_ids.yaml
> @@ -563,4 +563,38 @@ controls:
> The range of supported ISO sensitivities, as documented by the
> ISO 12232:2006 standard
>
> + - LensApertures:
> + type: float
> + size: [16]
Why 16?
> + description: |
> + The available lens apertures, expressed as f numbers (the ratio between
> + the lens focal distance and the diameter of the pupil aperture).
> +
> + If the camera module has a fixed aperture, the property transports a
> + single value.
And the others should all be set to 0?
> +
> + - LensFocalLengths:
> + type: float
> + size: [16]
> + description: |
> + The available lens focal lengths, expressed in millimeters.
> +
> + If the camera module supports multiple focal lengths this property
> + reports the focal lengths associated with each discrete step. For
> + camera modules with a single focal length, a single value should be
> + instead reported.
> +
> + - LensHyperfocalDistances:
> + type: float
> + size: [16]
> + description: |
> + The hyperfocal distance of the camera module. The property is
> + particularly meaningful for modules with a single focal length.
> +
> + - LensMinimumFocusDistance:
> + type: float
> + description: |
> + The shortest distance in millimeters at which an object could be brought
> + into sharp focus.
> +
> ...
>
--
Regards
--
Kieran
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