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42 lines
1.4 KiB
42 lines
1.4 KiB
3 years ago
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.. Permission is granted to copy, distribute and/or modify this
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.. document under the terms of the GNU Free Documentation License,
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.. Version 1.1 or any later version published by the Free Software
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.. Foundation, with no Invariant Sections, no Front-Cover Texts
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.. and no Back-Cover Texts. A copy of the license is included at
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.. Documentation/media/uapi/fdl-appendix.rst.
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..
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.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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.. _v4l2-meta-fmt-bcm2835-isp-stats:
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*****************************************
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V4L2_META_FMT_BCM2835_ISP_STATS ('BSTA')
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*****************************************
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BCM2835 ISP Statistics
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Description
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===========
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The BCM2835 ISP hardware calculate image statistics for an input Bayer frame.
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These statistics are obtained from the "bcm2835-isp0-capture3" device node
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using the :c:type:`v4l2_meta_format` interface. They are formatted as described
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by the :c:type:`bcm2835_isp_stats` structure below.
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.. code-block:: c
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#define DEFAULT_AWB_REGIONS_X 16
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#define DEFAULT_AWB_REGIONS_Y 12
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#define NUM_HISTOGRAMS 2
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#define NUM_HISTOGRAM_BINS 128
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#define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y)
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#define FLOATING_REGIONS 16
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#define AGC_REGIONS 16
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#define FOCUS_REGIONS 12
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.. kernel-doc:: include/uapi/linux/bcm2835-isp.h
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:functions: bcm2835_isp_stats_hist bcm2835_isp_stats_region
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bcm2835_isp_stats_focus bcm2835_isp_stats
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