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Diffstat (limited to 'include/ia_imaging/ia_css_tnr3_types.h')
| -rw-r--r-- | include/ia_imaging/ia_css_tnr3_types.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/ia_imaging/ia_css_tnr3_types.h b/include/ia_imaging/ia_css_tnr3_types.h new file mode 100644 index 0000000..11ac06b --- /dev/null +++ b/include/ia_imaging/ia_css_tnr3_types.h @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2015 - 2017 Intel Corporation. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef _IA_CSS_TNR3_TYPES_H +#define _IA_CSS_TNR3_TYPES_H + +/** @file +* CSS-API header file for Temporal Noise Reduction v3 (TNR3) kernel +*/ + +/** + * \brief Number of piecewise linear segments. + * \details The parameters to TNR3 are specified as a piecewise linear segment. + * The number of such segments is fixed at 3. + */ +#define TNR3_NUM_SEGMENTS 3 + +/** Temporal Noise Reduction v3 (TNR3) configuration. + * The parameter to this kernel is fourfold + * 1. Three piecewise linear graphs (one for each plane) with three segments + * each. Each line graph has Luma values on the x axis and sigma values for + * each plane on the y axis. The three linear segments may have a different + * slope and the point of Luma value which where the slope may change is called + * a "Knee" point. As there are three such segments, four points need to be + * specified each on the Luma axis and the per plane Sigma axis. On the Luma + * axis two points are fixed (namely 0 and maximum luma value - depending on + * ISP bit depth). The other two points are the points where the slope may + * change its value. These two points are called knee points. The four points on + * the per plane sigma axis are also specified at the interface. + * 2. One rounding adjustment parameter for each plane + * 3. One maximum feedback threshold value for each plane + * 4. Selection of the reference frame buffer to be used for noise reduction. + */ +struct ia_css_tnr3_kernel_config { + unsigned int maxfb_y; /**< Maximum Feedback Gain for Y */ + unsigned int maxfb_u; /**< Maximum Feedback Gain for U */ + unsigned int maxfb_v; /**< Maximum Feedback Gain for V */ + unsigned int round_adj_y; /**< Rounding Adjust for Y */ + unsigned int round_adj_u; /**< Rounding Adjust for U */ + unsigned int round_adj_v; /**< Rounding Adjust for V */ + unsigned int knee_y[TNR3_NUM_SEGMENTS - 1]; /**< Knee points */ + unsigned int sigma_y[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for Y at points Y0, Y1, Y2, Y3 */ + unsigned int sigma_u[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for U at points U0, U1, U2, U3 */ + unsigned int sigma_v[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for V at points V0, V1, V2, V3 */ + unsigned int ref_buf_select; /**< Selection of the reference buffer */ +}; + +#endif |