drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr_1.0/ia_css_tnr_types.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __IA_CSS_TNR_TYPES_H
  16 #define __IA_CSS_TNR_TYPES_H
  17
  18 /* @file
  19 * CSS-API header file for Temporal Noise Reduction (TNR) parameters.
  20 */
  21
  22 /* Temporal Noise Reduction (TNR) configuration.
  23  *
  24  *  When difference between current frame and previous frame is less than or
  25  *  equal to threshold, TNR works and current frame is mixed
  26  *  with previous frame.
  27  *  When difference between current frame and previous frame is greater
  28  *  than threshold, we judge motion is detected. Then, TNR does not work and
  29  *  current frame is outputted as it is.
  30  *  Therefore, when threshold_y and threshold_uv are set as 0, TNR can be disabled.
  31  *
  32  *  ISP block: TNR1
  33  *  ISP1: TNR1 is used.
  34  *  ISP2: TNR1 is used.
  35  */
  36
  37
  38 struct ia_css_tnr_config {
  39         ia_css_u0_16 gain; /** Interpolation ratio of current frame
  40                                 and previous frame.
  41                                 gain=0.0 -> previous frame is outputted.
  42                                 gain=1.0 -> current frame is outputted.
  43                                 u0.16, [0,65535],
  44                         default 32768(0.5), ineffective 65535(almost 1.0) */
  45         ia_css_u0_16 threshold_y; /** Threshold to enable interpolation of Y.
  46                                 If difference between current frame and
  47                                 previous frame is greater than threshold_y,
  48                                 TNR for Y is disabled.
  49                                 u0.16, [0,65535], default/ineffective 0 */
  50         ia_css_u0_16 threshold_uv; /** Threshold to enable interpolation of
  51                                 U/V.
  52                                 If difference between current frame and
  53                                 previous frame is greater than threshold_uv,
  54                                 TNR for UV is disabled.
  55                                 u0.16, [0,65535], default/ineffective 0 */
  56 };
  57
  58
  59 #endif /* __IA_CSS_TNR_TYPES_H */
  60