diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm.host.c')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm.host.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm.host.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm.host.c new file mode 100644 index 0000000..6d12e03 --- /dev/null +++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm.host.c @@ -0,0 +1,183 @@ +/* + * 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. + */ + +#include "type_support.h" +#include "ia_css_bnlm.host.h" + +#ifndef IA_CSS_NO_DEBUG +#include "ia_css_debug.h" /* ia_css_debug_dtrace() */ +#endif +#include <assert_support.h> + +#define BNLM_DIV_LUT_SIZE (12) +static const int32_t div_lut_nearests[BNLM_DIV_LUT_SIZE] = { + 0, 454, 948, 1484, 2070, 2710, 3412, 4184, 5035, 5978, 7025, 8191 +}; + +static const int32_t div_lut_slopes[BNLM_DIV_LUT_SIZE] = { + -7760, -6960, -6216, -5536, -4912, -4344, -3832, -3360, -2936, -2552, -2208, -2208 +}; + +static const int32_t div_lut_intercepts[BNLM_DIV_LUT_SIZE] = { + 8184, 7752, 7336, 6928, 6536, 6152, 5776, 5416, 5064, 4728, 4408, 4408 +}; + +/* Encodes a look-up table from BNLM public parameters to vmem parameters. + * Input: + * lut : bnlm_lut struct containing encoded vmem parameters look-up table + * lut_thr : array containing threshold values for lut + * lut_val : array containing output values related to lut_thr + * lut_size: Size of lut_val array + */ +static inline void +bnlm_lut_encode(struct bnlm_lut *lut, const int32_t *lut_thr, const int32_t *lut_val, const uint32_t lut_size) +{ + u32 blk, i; + const u32 block_size = 16; + const u32 total_blocks = ISP_VEC_NELEMS / block_size; + + /* Create VMEM LUTs from the threshold and value arrays. + * + * Min size of the LUT is 2 entries. + * + * Max size of the LUT is 16 entries, so that the LUT can fit into a + * single group of 16 elements inside a vector. + * Then these elements are copied into other groups inside the same + * vector. If the LUT size is less than 16, then remaining elements are + * set to 0. + */ + assert((lut_size >= 2) && (lut_size <= block_size)); + /* array lut_thr has (lut_size-1) entries */ + for (i = 0; i < lut_size-2; i++) { + /* Check if the lut_thr is monotonically increasing */ + assert(lut_thr[i] <= lut_thr[i+1]); + } + + /* Initialize */ + for (i = 0; i < total_blocks * block_size; i++) { + lut->thr[0][i] = 0; + lut->val[0][i] = 0; + } + + /* Copy all data */ + for (i = 0; i < lut_size - 1; i++) { + lut->thr[0][i] = lut_thr[i]; + lut->val[0][i] = lut_val[i]; + } + lut->val[0][i] = lut_val[i]; /* val has one more element than thr */ + + /* Copy data from first block to all blocks */ + for (blk = 1; blk < total_blocks; blk++) { + u32 blk_offset = blk * block_size; + for (i = 1; i < lut_size; i++) { + lut->thr[0][blk_offset + i] = lut->thr[0][i]; + lut->val[0][blk_offset + i] = lut->val[0][i]; + } + } +} + +/* + * - Encodes BNLM public parameters into VMEM parameters + * - Generates VMEM parameters which will needed internally ISP + */ +void +ia_css_bnlm_vmem_encode( + struct bnlm_vmem_params *to, + const struct ia_css_bnlm_config *from, + size_t size) +{ + int i; + (void)size; + + /* Initialize LUTs in VMEM parameters */ + bnlm_lut_encode(&to->mu_root_lut, from->mu_root_lut_thr, from->mu_root_lut_val, 16); + bnlm_lut_encode(&to->sad_norm_lut, from->sad_norm_lut_thr, from->sad_norm_lut_val, 16); + bnlm_lut_encode(&to->sig_detail_lut, from->sig_detail_lut_thr, from->sig_detail_lut_val, 16); + bnlm_lut_encode(&to->sig_rad_lut, from->sig_rad_lut_thr, from->sig_rad_lut_val, 16); + bnlm_lut_encode(&to->rad_pow_lut, from->rad_pow_lut_thr, from->rad_pow_lut_val, 16); + bnlm_lut_encode(&to->nl_0_lut, from->nl_0_lut_thr, from->nl_0_lut_val, 16); + bnlm_lut_encode(&to->nl_1_lut, from->nl_1_lut_thr, from->nl_1_lut_val, 16); + bnlm_lut_encode(&to->nl_2_lut, from->nl_2_lut_thr, from->nl_2_lut_val, 16); + bnlm_lut_encode(&to->nl_3_lut, from->nl_3_lut_thr, from->nl_3_lut_val, 16); + + /* Initialize arrays in VMEM parameters */ + memset(to->nl_th, 0, sizeof(to->nl_th)); + to->nl_th[0][0] = from->nl_th[0]; + to->nl_th[0][1] = from->nl_th[1]; + to->nl_th[0][2] = from->nl_th[2]; + + memset(to->match_quality_max_idx, 0, sizeof(to->match_quality_max_idx)); + to->match_quality_max_idx[0][0] = from->match_quality_max_idx[0]; + to->match_quality_max_idx[0][1] = from->match_quality_max_idx[1]; + to->match_quality_max_idx[0][2] = from->match_quality_max_idx[2]; + to->match_quality_max_idx[0][3] = from->match_quality_max_idx[3]; + + bnlm_lut_encode(&to->div_lut, div_lut_nearests, div_lut_slopes, BNLM_DIV_LUT_SIZE); + memset(to->div_lut_intercepts, 0, sizeof(to->div_lut_intercepts)); + for(i = 0; i < BNLM_DIV_LUT_SIZE; i++) { + to->div_lut_intercepts[0][i] = div_lut_intercepts[i]; + } + + memset(to->power_of_2, 0, sizeof(to->power_of_2)); + for (i = 0; i < (ISP_VEC_ELEMBITS-1); i++) { + to->power_of_2[0][i] = 1 << i; + } +} + +/* - Encodes BNLM public parameters into DMEM parameters */ +void +ia_css_bnlm_encode( + struct bnlm_dmem_params *to, + const struct ia_css_bnlm_config *from, + size_t size) +{ + (void)size; + to->rad_enable = from->rad_enable; + to->rad_x_origin = from->rad_x_origin; + to->rad_y_origin = from->rad_y_origin; + to->avg_min_th = from->avg_min_th; + to->max_min_th = from->max_min_th; + + to->exp_coeff_a = from->exp_coeff_a; + to->exp_coeff_b = from->exp_coeff_b; + to->exp_coeff_c = from->exp_coeff_c; + to->exp_exponent = from->exp_exponent; +} + +/* Prints debug traces for BNLM public parameters */ +void +ia_css_bnlm_debug_trace( + const struct ia_css_bnlm_config *config, + unsigned level) +{ + if (!config) + return; + +#ifndef IA_CSS_NO_DEBUG + ia_css_debug_dtrace(level, "BNLM:\n"); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "rad_enable", config->rad_enable); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "rad_x_origin", config->rad_x_origin); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "rad_y_origin", config->rad_y_origin); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "avg_min_th", config->avg_min_th); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "max_min_th", config->max_min_th); + + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "exp_coeff_a", config->exp_coeff_a); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "exp_coeff_b", config->exp_coeff_b); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "exp_coeff_c", config->exp_coeff_c); + ia_css_debug_dtrace(level, "\t%-32s = %d\n", "exp_exponent", config->exp_exponent); + + /* ToDo: print traces for LUTs */ +#endif /* IA_CSS_NO_DEBUG */ + +} |
