1 /* Copyright 2022 Advanced Micro Devices, Inc.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a
4 * copy of this software and associated documentation files (the "Software"),
5 * to deal in the Software without restriction, including without limitation
6 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
7 * and/or sell copies of the Software, and to permit persons to whom the
8 * Software is furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
17 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
18 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
19 * OTHER DEALINGS IN THE SOFTWARE.
20 *
21 * Authors: AMD
22 *
23 */
24
25 #include "shaper_builder.h"
26 #include "custom_fp16.h"
27 #include "fixed31_32.h"
28
29 struct shaper_setup_out {
30 int exp_begin_raw;
31 int exp_end_raw;
32 int begin_custom_1_6_12;
33 int end_custom_0_6_10;
34 int end_base_fixed_0_14;
35 };
36
calculate_shaper_properties_const_hdr_mult(const struct vpe_shaper_setup_in * shaper_in,struct shaper_setup_out * shaper_out)37 static bool calculate_shaper_properties_const_hdr_mult(
38 const struct vpe_shaper_setup_in *shaper_in, struct shaper_setup_out *shaper_out)
39 {
40 double x;
41 struct vpe_custom_float_format2 fmt;
42 struct vpe_custom_float_value2 custom_float;
43 int num_exp;
44
45 bool ret = false;
46 int isize = 1 << 14;
47 double divider = isize - 1;
48 double x_double_begin;
49
50 double multiplyer = shaper_in->source_luminance / 10000.0 * shaper_in->shaper_in_max;
51
52 fmt.flags.Uint = 0;
53 fmt.flags.bits.sign = 1;
54 fmt.mantissaBits = 12;
55 fmt.exponentaBits = 6;
56
57 x = pow(1.0 / divider, 2.2) * multiplyer;
58 if (!vpe_convert_to_custom_float_ex_generic(x, &fmt, &custom_float))
59 goto release;
60 shaper_out->exp_begin_raw = custom_float.exponenta;
61
62 if (!vpe_from_1_6_12_to_double(false, custom_float.exponenta, 0, &x_double_begin))
63 goto release;
64
65 if (!vpe_convert_to_custom_float_generic(
66 x_double_begin, &fmt, &shaper_out->begin_custom_1_6_12))
67 goto release;
68
69 fmt.flags.bits.sign = 0;
70 fmt.mantissaBits = 10;
71 if (!vpe_convert_to_custom_float_ex_generic(multiplyer, &fmt, &custom_float))
72 goto release;
73 shaper_out->exp_end_raw = custom_float.exponenta;
74 if (!vpe_convert_to_custom_float_generic(multiplyer, &fmt, &shaper_out->end_custom_0_6_10))
75 goto release;
76 shaper_out->end_base_fixed_0_14 = isize - 1;
77 num_exp = shaper_out->exp_end_raw - shaper_out->exp_begin_raw + 1;
78 if (num_exp > 34)
79 goto release;
80 ret = true;
81 release:
82 return ret;
83 }
84
calculate_shaper_properties_variable_hdr_mult(const struct vpe_shaper_setup_in * shaper_in,struct shaper_setup_out * shaper_out)85 static bool calculate_shaper_properties_variable_hdr_mult(
86 const struct vpe_shaper_setup_in *shaper_in, struct shaper_setup_out *shaper_out)
87 {
88 struct vpe_custom_float_format2 fmt;
89 struct vpe_custom_float_value2 custom_float;
90 int num_exp;
91
92 bool ret = false;
93 int isize = 1 << 14;
94 double divider = isize - 1;
95 double x_double_begin = 0;
96
97 fmt.flags.Uint = 0;
98 fmt.exponentaBits = 6;
99 fmt.mantissaBits = 10;
100 if (!vpe_convert_to_custom_float_ex_generic(shaper_in->shaper_in_max, &fmt, &custom_float))
101 goto release;
102
103 if (!vpe_convert_to_custom_float_generic(
104 shaper_in->shaper_in_max, &fmt, &shaper_out->end_custom_0_6_10))
105 goto release;
106
107 shaper_out->exp_end_raw = custom_float.exponenta;
108 shaper_out->exp_begin_raw = shaper_out->exp_end_raw - 33;
109
110 shaper_out->end_base_fixed_0_14 = isize - 1;
111
112 if (!vpe_from_1_6_12_to_double(false, shaper_out->exp_begin_raw, 0, &x_double_begin))
113 goto release;
114
115 fmt.mantissaBits = 12;
116 fmt.flags.bits.sign = 1;
117
118 if (!vpe_convert_to_custom_float_generic(
119 x_double_begin, &fmt, &shaper_out->begin_custom_1_6_12))
120 goto release;
121
122 num_exp = shaper_out->exp_end_raw - shaper_out->exp_begin_raw + 1;
123 if (num_exp > 34)
124 goto release;
125 ret = true;
126 release:
127 return ret;
128 }
129
build_shaper_2_2_segments_distribution(int num_regions,int * arr_segments)130 static int build_shaper_2_2_segments_distribution(int num_regions, int *arr_segments)
131 {
132 int i;
133 int counter;
134 int num_segments = 0;
135 int num_segments_total = 0;
136 const int proposed_2_2_distribution[] = {5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 0, 0,
137 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
138 int proposed_regions = ARRAY_SIZE(proposed_2_2_distribution);
139
140 if (proposed_regions < num_regions)
141 goto release;
142 counter = 0;
143
144 for (i = num_regions - 1; i >= 0; i--) {
145 arr_segments[counter] = proposed_2_2_distribution[i];
146 num_segments += 1 << proposed_2_2_distribution[i];
147 counter++;
148 }
149 release:
150 return num_segments;
151 }
152
vpe_build_shaper(const struct vpe_shaper_setup_in * shaper_in,struct pwl_params * shaper)153 enum vpe_status vpe_build_shaper(
154 const struct vpe_shaper_setup_in *shaper_in, struct pwl_params *shaper)
155 {
156 enum vpe_status ret = VPE_STATUS_ERROR;
157
158 int num_points = 0;
159 int arr_regions[34];
160 struct shaper_setup_out shaper_params;
161 int i, j;
162 int num_exp;
163
164 unsigned int exp;
165 double x, delta_segments;
166 int lut_counter = 0;
167 int segments_current;
168 int segments_offset;
169
170 unsigned int decimalBits = 14;
171
172 unsigned int mask = (1 << decimalBits) - 1;
173 double d_norm = mask;
174 double divider = shaper_in->shaper_in_max;
175
176 if (shaper_in->use_const_hdr_mult &&
177 !calculate_shaper_properties_const_hdr_mult(shaper_in, &shaper_params))
178 goto release;
179 else if (!calculate_shaper_properties_variable_hdr_mult(shaper_in, &shaper_params))
180 goto release;
181
182 exp = shaper_params.exp_begin_raw;
183
184 num_exp = shaper_params.exp_end_raw - shaper_params.exp_begin_raw + 1;
185 num_points = build_shaper_2_2_segments_distribution(num_exp, arr_regions);
186
187 segments_offset = 0;
188
189 for (i = 0; i < num_exp; i++) {
190 segments_current = 1 << arr_regions[i];
191 shaper->arr_curve_points[i].segments_num = arr_regions[i];
192 shaper->arr_curve_points[i].offset = segments_offset;
193 segments_offset = segments_offset + segments_current;
194 if (!vpe_from_1_6_12_to_double(false, exp, 0, &x))
195 goto release;
196 x /= divider;
197 shaper->rgb_resulted[lut_counter].red_reg =
198 vpe_to_fixed_point(decimalBits, x, mask, d_norm);
199 shaper->rgb_resulted[lut_counter].green_reg = shaper->rgb_resulted[lut_counter].red_reg;
200 shaper->rgb_resulted[lut_counter].blue_reg = shaper->rgb_resulted[lut_counter].red_reg;
201
202 delta_segments = x / segments_current;
203 lut_counter++;
204 for (j = 0; j < segments_current - 1; j++) {
205 x += delta_segments;
206 shaper->rgb_resulted[lut_counter].red_reg =
207 vpe_to_fixed_point(decimalBits, x, mask, d_norm);
208 shaper->rgb_resulted[lut_counter].green_reg = shaper->rgb_resulted[lut_counter].red_reg;
209 shaper->rgb_resulted[lut_counter].blue_reg = shaper->rgb_resulted[lut_counter].red_reg;
210 lut_counter++;
211 }
212 exp++;
213 }
214
215 shaper->corner_points[0].red.custom_float_x = shaper_params.begin_custom_1_6_12;
216 shaper->corner_points[0].green.custom_float_x = shaper->corner_points[0].red.custom_float_x;
217 shaper->corner_points[0].blue.custom_float_x = shaper->corner_points[0].red.custom_float_x;
218
219 shaper->corner_points[1].red.custom_float_x = shaper_params.end_custom_0_6_10;
220 shaper->corner_points[1].green.custom_float_x = shaper->corner_points[1].red.custom_float_x;
221 shaper->corner_points[1].blue.custom_float_x = shaper->corner_points[1].red.custom_float_x;
222
223 shaper->corner_points[1].red.custom_float_y = shaper_params.end_base_fixed_0_14;
224 shaper->corner_points[1].green.custom_float_y = shaper->corner_points[1].red.custom_float_y;
225 shaper->corner_points[1].blue.custom_float_y = shaper->corner_points[1].red.custom_float_y;
226
227 for (i = 1; i < num_points; i++) {
228 shaper->rgb_resulted[i - 1].delta_red_reg =
229 shaper->rgb_resulted[i].red_reg - shaper->rgb_resulted[i - 1].red_reg;
230 shaper->rgb_resulted[i - 1].delta_green_reg = shaper->rgb_resulted[i - 1].delta_red_reg;
231 shaper->rgb_resulted[i - 1].delta_blue_reg = shaper->rgb_resulted[i - 1].delta_red_reg;
232 }
233
234 shaper->hw_points_num = num_points;
235 ret = VPE_STATUS_OK;
236
237 release:
238 return ret;
239 }
240