diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2024-10-10 14:41:48 +0100 |
|---|---|---|
| committer | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2024-10-21 11:51:41 +0100 |
| commit | 994588fb75838b46d5eb74b916d66f0b9fc49421 (patch) | |
| tree | 580df5e4696fc4f5f7b714aa40826c9c0d70f6d2 /src/ipa/rpi/cam_helper | |
| parent | 79893cc00fc6b58d42c411164947b8876bc628c3 (diff) | |
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>
Diffstat (limited to 'src/ipa/rpi/cam_helper')
| -rw-r--r-- | src/ipa/rpi/cam_helper/cam_helper_ov7251.cpp | 66 | ||||
| -rw-r--r-- | src/ipa/rpi/cam_helper/meson.build | 1 |
2 files changed, 67 insertions, 0 deletions
diff --git a/src/ipa/rpi/cam_helper/cam_helper_ov7251.cpp b/src/ipa/rpi/cam_helper/cam_helper_ov7251.cpp new file mode 100644 index 00000000..7b12c445 --- /dev/null +++ b/src/ipa/rpi/cam_helper/cam_helper_ov7251.cpp @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2021, Raspberry Pi Ltd + * + * camera information for ov7251 sensor + */ + +#include <assert.h> + +#include "cam_helper.h" + +using namespace RPiController; + +class CamHelperOv7251 : public CamHelper +{ +public: + CamHelperOv7251(); + uint32_t gainCode(double gain) const override; + double gain(uint32_t gainCode) const override; + void getDelays(int &exposureDelay, int &gainDelay, + int &vblankDelay, int &hblankDelay) const override; + +private: + /* + * Smallest difference between the frame length and integration time, + * in units of lines. + */ + static constexpr int frameIntegrationDiff = 4; +}; + +/* + * OV7251 doesn't output metadata, so we have to use the "unicam parser" which + * works by counting frames. + */ + +CamHelperOv7251::CamHelperOv7251() + : CamHelper({}, frameIntegrationDiff) +{ +} + +uint32_t CamHelperOv7251::gainCode(double gain) const +{ + return static_cast<uint32_t>(gain * 16.0); +} + +double CamHelperOv7251::gain(uint32_t gainCode) const +{ + return static_cast<double>(gainCode) / 16.0; +} + +void CamHelperOv7251::getDelays(int &exposureDelay, int &gainDelay, + int &vblankDelay, int &hblankDelay) const +{ + /* The driver appears to behave as follows: */ + exposureDelay = 2; + gainDelay = 2; + vblankDelay = 2; + hblankDelay = 2; +} + +static CamHelper *create() +{ + return new CamHelperOv7251(); +} + +static RegisterCamHelper reg("ov7251", &create); diff --git a/src/ipa/rpi/cam_helper/meson.build b/src/ipa/rpi/cam_helper/meson.build index 1e43f1da..03e88fe0 100644 --- a/src/ipa/rpi/cam_helper/meson.build +++ b/src/ipa/rpi/cam_helper/meson.build @@ -11,6 +11,7 @@ rpi_ipa_cam_helper_sources = files([ 'cam_helper_imx519.cpp', 'cam_helper_imx708.cpp', 'cam_helper_ov64a40.cpp', + 'cam_helper_ov7251.cpp', 'cam_helper_ov9281.cpp', 'md_parser_smia.cpp', ]) |