ipa: rpi: Add tuning files for OV7251
OV7251 is a mono VGA global shutter sensor that has a mainline driver and works with libcamera. Add the supporting files for it. The tuning is copied from OV9281. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Dave Stevenson
committed by
Kieran Bingham
Kieran Bingham
parent
79893cc00f
commit
994588fb75
@@ -0,0 +1,66 @@
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/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2021, Raspberry Pi Ltd
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*
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* camera information for ov7251 sensor
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*/
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#include <assert.h>
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#include "cam_helper.h"
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using namespace RPiController;
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class CamHelperOv7251 : public CamHelper
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{
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public:
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CamHelperOv7251();
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uint32_t gainCode(double gain) const override;
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double gain(uint32_t gainCode) const override;
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void getDelays(int &exposureDelay, int &gainDelay,
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int &vblankDelay, int &hblankDelay) const override;
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private:
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/*
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* Smallest difference between the frame length and integration time,
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* in units of lines.
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*/
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static constexpr int frameIntegrationDiff = 4;
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};
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/*
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* OV7251 doesn't output metadata, so we have to use the "unicam parser" which
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* works by counting frames.
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*/
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CamHelperOv7251::CamHelperOv7251()
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: CamHelper({}, frameIntegrationDiff)
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{
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}
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uint32_t CamHelperOv7251::gainCode(double gain) const
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{
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return static_cast<uint32_t>(gain * 16.0);
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}
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double CamHelperOv7251::gain(uint32_t gainCode) const
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{
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return static_cast<double>(gainCode) / 16.0;
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}
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void CamHelperOv7251::getDelays(int &exposureDelay, int &gainDelay,
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int &vblankDelay, int &hblankDelay) const
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{
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/* The driver appears to behave as follows: */
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exposureDelay = 2;
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gainDelay = 2;
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vblankDelay = 2;
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hblankDelay = 2;
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}
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static CamHelper *create()
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{
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return new CamHelperOv7251();
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}
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static RegisterCamHelper reg("ov7251", &create);
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@@ -11,6 +11,7 @@ rpi_ipa_cam_helper_sources = files([
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'cam_helper_imx519.cpp',
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'cam_helper_imx708.cpp',
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'cam_helper_ov64a40.cpp',
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'cam_helper_ov7251.cpp',
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'cam_helper_ov9281.cpp',
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'md_parser_smia.cpp',
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])
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@@ -19,6 +19,7 @@ conf_files = files([
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'ov5647.json',
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'ov5647_noir.json',
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'ov64a40.json',
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'ov7251_mono.json',
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'ov9281_mono.json',
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'se327m12.json',
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'uncalibrated.json',
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@@ -0,0 +1,136 @@
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{
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"version": 2.0,
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"target": "bcm2835",
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"algorithms": [
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{
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"rpi.black_level":
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{
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"black_level": 4096
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}
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},
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{
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"rpi.lux":
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{
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"reference_shutter_speed": 2000,
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"reference_gain": 1.0,
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"reference_aperture": 1.0,
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"reference_lux": 800,
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"reference_Y": 20000
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}
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},
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{
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"rpi.noise":
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{
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"reference_constant": 0,
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"reference_slope": 2.5
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}
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},
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{
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"rpi.sdn": { }
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},
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{
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"rpi.agc":
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{
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"metering_modes":
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{
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"centre-weighted":
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{
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"weights":
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[
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4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0
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]
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}
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},
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"exposure_modes":
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{
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"normal":
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{
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"shutter": [ 100, 15000, 30000, 60000, 120000 ],
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"gain": [ 1.0, 2.0, 3.0, 4.0, 8.0 ]
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},
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"short":
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{
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"shutter": [ 100, 5000, 10000, 20000, 30000 ],
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"gain": [ 1.0, 2.0, 4.0, 6.0, 8.0 ]
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},
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"long":
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{
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"shutter": [ 1000, 30000, 60000, 90000, 120000 ],
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"gain": [ 1.0, 2.0, 4.0, 6.0, 12.0 ]
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}
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},
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"constraint_modes":
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{
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"normal": [
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{
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"bound": "LOWER",
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"q_lo": 0.98,
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"q_hi": 1.0,
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"y_target":
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[
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0, 0.4,
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1000, 0.4
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]
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}
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]
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},
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"y_target":
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[
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0, 0.16,
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1000, 0.165,
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10000, 0.17
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]
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}
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},
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{
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"rpi.alsc":
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{
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"n_iter": 0,
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"luminance_strength": 1.0,
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"corner_strength": 1.5
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}
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},
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{
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"rpi.contrast":
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{
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"ce_enable": 0,
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"gamma_curve":
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[
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0, 0,
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1024, 5040,
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2048, 9338,
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3072, 12356,
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4096, 15312,
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5120, 18051,
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6144, 20790,
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7168, 23193,
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8192, 25744,
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9216, 27942,
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10240, 30035,
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11264, 32005,
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12288, 33975,
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13312, 35815,
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14336, 37600,
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15360, 39168,
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16384, 40642,
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18432, 43379,
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20480, 45749,
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22528, 47753,
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24576, 49621,
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26624, 51253,
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28672, 52698,
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30720, 53796,
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32768, 54876,
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36864, 57012,
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40960, 58656,
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45056, 59954,
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49152, 61183,
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53248, 62355,
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57344, 63419,
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61440, 64476,
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65535, 65535
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]
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}
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}
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]
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}
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