1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Support for Intel Camera Imaging ISP subsystem.
4 * Copyright (c) 2015, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 */
15
16
17 #include "ia_css_types.h"
18 #include "sh_css_internal.h"
19 #include "assert_support.h"
20 #include "sh_css_frac.h"
21
22 #include "ia_css_bh.host.h"
23
24 void
ia_css_bh_hmem_decode(struct ia_css_3a_rgby_output * out_ptr,const struct ia_css_bh_table * hmem_buf)25 ia_css_bh_hmem_decode(
26 struct ia_css_3a_rgby_output *out_ptr,
27 const struct ia_css_bh_table *hmem_buf)
28 {
29 int i;
30
31 /*
32 * No weighted histogram, hence no grid definition
33 */
34 if (!hmem_buf)
35 return;
36 assert(sizeof_hmem(HMEM0_ID) == sizeof(*hmem_buf));
37
38 /* Deinterleave */
39 for (i = 0; i < HMEM_UNIT_SIZE; i++) {
40 out_ptr[i].r = hmem_buf->hmem[BH_COLOR_R][i];
41 out_ptr[i].g = hmem_buf->hmem[BH_COLOR_G][i];
42 out_ptr[i].b = hmem_buf->hmem[BH_COLOR_B][i];
43 out_ptr[i].y = hmem_buf->hmem[BH_COLOR_Y][i];
44 /* sh_css_print ("hmem[%d] = %d, %d, %d, %d\n",
45 i, out_ptr[i].r, out_ptr[i].g, out_ptr[i].b, out_ptr[i].y); */
46 }
47 }
48
49 void
ia_css_bh_encode(struct sh_css_isp_bh_params * to,const struct ia_css_3a_config * from,unsigned int size)50 ia_css_bh_encode(
51 struct sh_css_isp_bh_params *to,
52 const struct ia_css_3a_config *from,
53 unsigned int size)
54 {
55 (void)size;
56 /* coefficients to calculate Y */
57 to->y_coef_r =
58 uDIGIT_FITTING(from->ae_y_coef_r, 16, SH_CSS_AE_YCOEF_SHIFT);
59 to->y_coef_g =
60 uDIGIT_FITTING(from->ae_y_coef_g, 16, SH_CSS_AE_YCOEF_SHIFT);
61 to->y_coef_b =
62 uDIGIT_FITTING(from->ae_y_coef_b, 16, SH_CSS_AE_YCOEF_SHIFT);
63 }
64
65