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May 29, 2024 20:06
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Based on https://github.com/LineageOS/android_kernel_xiaomi_sdm710/commit/022c8af26daa76d94ce43823a9d4cd656f413c18 & https://github.com/LineageOS/android_kernel_xiaomi_sdm710/commit/aa61843a6c5ac9e1b4073e7ffe2d9afc007139c1
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| import math | |
| def calculate_backlight_ratio(max_backlight, nits_with_hbm, nits_without_hbm): | |
| ratio = (max_backlight * nits_with_hbm) / nits_without_hbm | |
| return ratio | |
| # Get user input for backlight parameters | |
| lut_type = input("Do you want LUT for FrameworkDimming or KernelDimming FD/KD?: ").strip().upper() | |
| if lut_type not in ['FD', 'KD']: | |
| print("Invalid LUT type. Please choose 'FD' for FrameworkDimming or 'KD' for KernelDimming.") | |
| exit() | |
| max_backlight = float(input("Enter the maximal backlight value: ")) | |
| nits_with_hbm = float(input("Enter the nits with HBM: ")) | |
| nits_without_hbm = float(input("Enter the nits without HBM: ")) | |
| gamma_factor = float(input("Enter the Gamma factor: ")) | |
| # Choose A2 values based on max_backlight | |
| if max_backlight == 2047: | |
| A2_values = [0, 3, 13, 31, 58, 96, 143, 200, 269, 348, 439, 551, 667, 794, 934, 1086, 1250, 1427, 1618, 1821, 2047] | |
| dc_threshold = 610 # Set dc_threshold for max_backlight == 2047 | |
| dc_A2_values = [0, 1, 4, 9, 18, 29, 43, 60, 81, 106, 132, 163, 198, 237, 277, 323, 373, 428, 481, 544, 610] | |
| elif max_backlight == 4095: | |
| A2_values = [0, 6, 26, 62, 116, 192, 286, 400, 538, 696, 878, 1102, 1334, 1588, 1868, 2172, 2500, 2854, 3236, 3642, 4095] | |
| dc_threshold = 1220 # Set dc_threshold for max_backlight == 4095 | |
| dc_A2_values = [0, 2, 8, 18, 36, 58, 86, 120, 162, 212, 264, 326, 396, 474, 554, 646, 746, 856, 962, 1088, 1220] | |
| elif max_backlight == 1023: | |
| A2_values = [0, 1, 16, 33, 48, 97, 146, 194, 243, 292, 341, 389, 438, 487, 535, 584, 633, 682, 730, 779, 828, 876, 925, 974, 1023] | |
| dc_threshold = 320 # Set dc_threshold for max_backlight == 1023 | |
| dc_A2_values = [0, 1, 3, 5, 9, 15, 22, 32, 43, 56, 69, 86, 104, 124, 145, 169, 196, 224, 253, 285, 320] | |
| else: | |
| print("Invalid max_backlight value. Please choose 1023, 2047, or 4095.") | |
| exit() | |
| # Calculate backlight ratio | |
| backlight_ratio = calculate_backlight_ratio(max_backlight, nits_with_hbm, nits_without_hbm) | |
| print(f"The backlight ratio is: {backlight_ratio}") | |
| if lut_type == 'KD': | |
| # Print results for qcom,disp-fod-dim-lut | |
| print("qcom,disp-fod-dim-lut = <") | |
| print("\t/* brightness, alpha */") | |
| for A2 in A2_values: | |
| result = (1 - math.pow(A2 / backlight_ratio, 1/gamma_factor)) * 255 | |
| hex_result = hex(int(result)).upper() | |
| print(f"\t{A2}\t{hex_result}") | |
| print(">;") | |
| # Print results for qcom,disp-dc-dim-lut | |
| print("qcom,disp-dc-dim-lut = <") | |
| print("\t/* brightness, alpha */") | |
| for A2 in dc_A2_values: | |
| result = (1 - math.pow(A2 / dc_threshold, 1/gamma_factor)) * 255 | |
| hex_result = hex(int(result)).upper() | |
| print(f"\t{A2}\t{hex_result}") | |
| print(">;") | |
| elif lut_type == 'FD': | |
| # Print for framework dimming | |
| print("Array of brightness-alpha LUT for framework dimming:") | |
| for A2 in A2_values: | |
| result = (1 - math.pow(A2 / backlight_ratio, 1/gamma_factor)) * 255 | |
| int_result = int(result) | |
| print(f"<item>{A2},{int_result}</item>") |
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