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362301b131
The existing framerate/vblank calculations did not account for the sensor mode limits. This commit extracts vblank limits from the sensor v4l2 controls, and stores it in the camera modes structure. Exposure and vblank value calculations now use values clamped to the sensor mode limits. The libcamera::controls::FrameDurations metadata return values now reflect the minimum and maximum after clamping. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2019-2020, Raspberry Pi (Trading) Limited
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*
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* camera_mode.h - description of a particular operating mode of a sensor
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*/
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#pragma once
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#include <libcamera/transform.h>
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// Description of a "camera mode", holding enough information for control
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// algorithms to adapt their behaviour to the different modes of the camera,
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// including binning, scaling, cropping etc.
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CAMERA_MODE_NAME_LEN 32
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struct CameraMode {
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// bit depth of the raw camera output
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uint32_t bitdepth;
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// size in pixels of frames in this mode
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uint16_t width, height;
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// size of full resolution uncropped frame ("sensor frame")
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uint16_t sensor_width, sensor_height;
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// binning factor (1 = no binning, 2 = 2-pixel binning etc.)
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uint8_t bin_x, bin_y;
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// location of top left pixel in the sensor frame
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uint16_t crop_x, crop_y;
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// scaling factor (so if uncropped, width*scale_x is sensor_width)
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double scale_x, scale_y;
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// scaling of the noise compared to the native sensor mode
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double noise_factor;
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// line time in nanoseconds
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double line_length;
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// any camera transform *not* reflected already in the camera tuning
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libcamera::Transform transform;
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// minimum and maximum fame lengths in units of lines
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uint32_t min_frame_length, max_frame_length;
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};
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#ifdef __cplusplus
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}
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#endif
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