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/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef __IA_CSS_TNR_TYPES_H
#define __IA_CSS_TNR_TYPES_H
/** @file
* CSS-API header file for Temporal Noise Reduction (TNR) parameters.
*/
/** Temporal Noise Reduction (TNR) configuration.
*
* When difference between current frame and previous frame is less than or
* equal to threshold, TNR works and current frame is mixed
* with previous frame.
* When difference between current frame and previous frame is greater
* than threshold, we judge motion is detected. Then, TNR does not work and
* current frame is outputted as it is.
* Therefore, when threshold_y and threshold_uv are set as 0, TNR can be disabled.
*
* ISP block: TNR1
* ISP1: TNR1 is used.
* ISP2: TNR1 is used.
*/
struct ia_css_tnr_config {
ia_css_u0_16 gain; /**< Interpolation ratio of current frame
and previous frame.
gain=0.0 -> previous frame is outputted.
gain=1.0 -> current frame is outputted.
u0.16, [0,65535],
default 32768(0.5), ineffective 65535(almost 1.0) */
ia_css_u0_16 threshold_y; /**< Threshold to enable interpolation of Y.
If difference between current frame and
previous frame is greater than threshold_y,
TNR for Y is disabled.
u0.16, [0,65535], default/ineffective 0 */
ia_css_u0_16 threshold_uv; /**< Threshold to enable interpolation of
U/V.
If difference between current frame and
previous frame is greater than threshold_uv,
TNR for UV is disabled.
u0.16, [0,65535], default/ineffective 0 */
};
#endif /* __IA_CSS_TNR_TYPES_H */
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