| /* linux/drivers/media/video/exynos/gsc/coef.c |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com |
| * |
| * G-scaler poly-phase filter coefficients |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published |
| * by the Free Software Foundation, either version 2 of the License, |
| * or (at your option) any later version. |
| */ |
| |
| #include <linux/types.h> |
| #include "gsc-core.h" |
| |
| /* 8-tap Filter Coefficient */ |
| const int h_coef_8t[7][16][8] = { |
| { /* Ratio <= 65536 (~8:8) */ |
| { 0, 0, 0, 128, 0, 0, 0, 0 },/* 0 */ |
| { -1, 2, -6, 127, 7, -2, 1, 0 },/* 1 */ |
| { -1, 4, -12, 125, 16, -5, 1, 0 },/* 2 */ |
| { -1, 5, -15, 120, 25, -8, 2, 0 },/* 3 */ |
| { -1, 6, -18, 114, 35, -10, 3, -1 },/* 4 */ |
| { -1, 6, -20, 107, 46, -13, 4, -1 },/* 5 */ |
| { -2, 7, -21, 99, 57, -16, 5, -1 },/* 6 */ |
| { -1, 6, -20, 89, 68, -18, 5, -1 },/* 7 */ |
| { -1, 6, -20, 79, 79, -20, 6, -1 },/* 8 */ |
| { -1, 5, -18, 68, 89, -20, 6, -1 },/* 9 */ |
| { -1, 5, -16, 57, 99, -21, 7, -2 },/* 10 */ |
| { -1, 4, -13, 46, 107, -20, 6, -1 },/* 11 */ |
| { -1, 3, -10, 35, 114, -18, 6, -1 },/* 12 */ |
| { 0, 2, -8, 25, 120, -15, 5, -1 },/* 13 */ |
| { 0, 1, -5, 16, 125, -12, 4, -1 },/* 14 */ |
| { 0, 1, -2, 7, 127, -6, 2, -1 } /* 15 */ |
| }, |
| { /* 65536 < Ratio <= 74898 (~8:7) */ |
| { 3, -8, 14, 111, 13, -8, 3, 0 },/* 0 */ |
| { 2, -6, 7, 112, 21, -10, 3, -1 },/* 1 */ |
| { 2, -4, 1, 110, 28, -12, 4, -1 },/* 2 */ |
| { 1, -2, -3, 106, 36, -13, 4, -1 },/* 3 */ |
| { 1, -1, -7, 103, 44, -15, 4, -1 },/* 4 */ |
| { 1, 1, -11, 97, 53, -16, 4, -1 },/* 5 */ |
| { 0, 2, -13, 91, 61, -16, 4, -1 },/* 6 */ |
| { 0, 3, -15, 85, 69, -17, 4, -1 },/* 7 */ |
| { 0, 3, -16, 77, 77, -16, 3, 0 },/* 8 */ |
| { -1, 4, -17, 69, 85, -15, 3, 0 },/* 9 */ |
| { -1, 4, -16, 61, 91, -13, 2, 0 },/* 10 */ |
| { -1, 4, -16, 53, 97, -11, 1, 1 },/* 11 */ |
| { -1, 4, -15, 44, 103, -7, -1, 1 },/* 12 */ |
| { -1, 4, -13, 36, 106, -3, -2, 1 },/* 13 */ |
| { -1, 4, -12, 28, 110, 1, -4, 2 },/* 14 */ |
| { -1, 3, -10, 21, 112, 7, -6, 2 } /* 15 */ |
| }, |
| { /* 74898 < Ratio <= 87381 (~8:6) */ |
| { 2, -11, 25, 96, 25, -11, 2, 0 },/* 0 */ |
| { 2, -10, 19, 96, 31, -12, 2, 0 },/* 1 */ |
| { 2, -9, 14, 94, 37, -12, 2, 0 },/* 2 */ |
| { 2, -8, 10, 92, 43, -12, 1, 0 },/* 3 */ |
| { 2, -7, 5, 90, 49, -12, 1, 0 },/* 4 */ |
| { 2, -5, 1, 86, 55, -12, 0, 1 },/* 5 */ |
| { 2, -4, -2, 82, 61, -11, -1, 1 },/* 6 */ |
| { 1, -3, -5, 77, 67, -9, -1, 1 },/* 7 */ |
| { 1, -2, -7, 72, 72, -7, -2, 1 },/* 8 */ |
| { 1, -1, -9, 67, 77, -5, -3, 1 },/* 9 */ |
| { 1, -1, -11, 61, 82, -2, -4, 2 },/* 10 */ |
| { 1, 0, -12, 55, 86, 1, -5, 2 },/* 11 */ |
| { 0, 1, -12, 49, 90, 5, -7, 2 },/* 12 */ |
| { 0, 1, -12, 43, 92, 10, -8, 2 },/* 13 */ |
| { 0, 2, -12, 37, 94, 14, -9, 2 },/* 14 */ |
| { 0, 2, -12, 31, 96, 19, -10, 2 } /* 15 */ |
| }, |
| { /* 87381 < Ratio <= 104857 (~8:5) */ |
| { -1, -8, 33, 80, 33, -8, -1, 0 },/* 0 */ |
| { -1, -8, 28, 80, 37, -7, -2, 1 },/* 1 */ |
| { 0, -8, 24, 79, 41, -7, -2, 1 },/* 2 */ |
| { 0, -8, 20, 78, 46, -6, -3, 1 },/* 3 */ |
| { 0, -8, 16, 76, 50, -4, -3, 1 },/* 4 */ |
| { 0, -7, 13, 74, 54, -3, -4, 1 },/* 5 */ |
| { 1, -7, 10, 71, 58, -1, -5, 1 },/* 6 */ |
| { 1, -6, 6, 68, 62, 1, -5, 1 },/* 7 */ |
| { 1, -6, 4, 65, 65, 4, -6, 1 },/* 8 */ |
| { 1, -5, 1, 62, 68, 6, -6, 1 },/* 9 */ |
| { 1, -5, -1, 58, 71, 10, -7, 1 },/* 10 */ |
| { 1, -4, -3, 54, 74, 13, -7, 0 },/* 11 */ |
| { 1, -3, -4, 50, 76, 16, -8, 0 },/* 12 */ |
| { 1, -3, -6, 46, 78, 20, -8, 0 },/* 13 */ |
| { 1, -2, -7, 41, 79, 24, -8, 0 },/* 14 */ |
| { 1, -2, -7, 37, 80, 28, -8, -1 } /* 15 */ |
| }, |
| { /* 104857 < Ratio <= 131072 (~8:4) */ |
| { -3, 0, 35, 64, 35, 0, -3, 0 },/* 0 */ |
| { -3, -1, 32, 64, 38, 1, -3, 0 },/* 1 */ |
| { -2, -2, 29, 63, 41, 2, -3, 0 },/* 2 */ |
| { -2, -3, 27, 63, 43, 4, -4, 0 },/* 3 */ |
| { -2, -3, 24, 61, 46, 6, -4, 0 },/* 4 */ |
| { -2, -3, 21, 60, 49, 7, -4, 0 },/* 5 */ |
| { -1, -4, 19, 59, 51, 9, -4, -1 },/* 6 */ |
| { -1, -4, 16, 57, 53, 12, -4, -1 },/* 7 */ |
| { -1, -4, 14, 55, 55, 14, -4, -1 },/* 8 */ |
| { -1, -4, 12, 53, 57, 16, -4, -1 },/* 9 */ |
| { -1, -4, 9, 51, 59, 19, -4, -1 },/* 10 */ |
| { 0, -4, 7, 49, 60, 21, -3, -2 },/* 11 */ |
| { 0, -4, 6, 46, 61, 24, -3, -2 },/* 12 */ |
| { 0, -4, 4, 43, 63, 27, -3, -2 },/* 13 */ |
| { 0, -3, 2, 41, 63, 29, -2, -2 },/* 14 */ |
| { 0, -3, 1, 38, 64, 32, -1, -3 } /* 15 */ |
| }, |
| { /* 131072 < Ratio <= 174762 (~8:3) */ |
| { -1, 8, 33, 48, 33, 8, -1, 0 },/* 0 */ |
| { -1, 7, 31, 49, 35, 9, -1, -1 },/* 1 */ |
| { -1, 6, 30, 49, 36, 10, -1, -1 },/* 2 */ |
| { -1, 5, 28, 48, 38, 12, -1, -1 },/* 3 */ |
| { -1, 4, 26, 48, 39, 13, 0, -1 },/* 4 */ |
| { -1, 3, 24, 47, 41, 15, 0, -1 },/* 5 */ |
| { -1, 2, 23, 47, 42, 16, 0, -1 },/* 6 */ |
| { -1, 2, 21, 45, 43, 18, 1, -1 },/* 7 */ |
| { -1, 1, 19, 45, 45, 19, 1, -1 },/* 8 */ |
| { -1, 1, 18, 43, 45, 21, 2, -1 },/* 9 */ |
| { -1, 0, 16, 42, 47, 23, 2, -1 },/* 10 */ |
| { -1, 0, 15, 41, 47, 24, 3, -1 },/* 11 */ |
| { -1, 0, 13, 39, 48, 26, 4, -1 },/* 12 */ |
| { -1, -1, 12, 38, 48, 28, 5, -1 },/* 13 */ |
| { -1, -1, 10, 36, 49, 30, 6, -1 },/* 14 */ |
| { -1, -1, 9, 35, 49, 31, 7, -1 } /* 15 */ |
| }, |
| { /* 174762 < Ratio <= 262144 (~8:2) */ |
| { 2, 13, 30, 38, 30, 13, 2, 0 },/* 0 */ |
| { 2, 12, 29, 38, 30, 14, 3, 0 },/* 1 */ |
| { 2, 11, 28, 38, 31, 15, 3, 0 },/* 2 */ |
| { 2, 10, 26, 38, 32, 16, 4, 0 },/* 3 */ |
| { 1, 10, 26, 37, 33, 17, 4, 0 },/* 4 */ |
| { 1, 9, 24, 37, 34, 18, 5, 0 },/* 5 */ |
| { 1, 8, 24, 37, 34, 19, 5, 0 },/* 6 */ |
| { 1, 7, 22, 36, 35, 20, 6, 1 },/* 7 */ |
| { 1, 6, 21, 36, 36, 21, 6, 1 },/* 8 */ |
| { 1, 6, 20, 35, 36, 22, 7, 1 },/* 9 */ |
| { 0, 5, 19, 34, 37, 24, 8, 1 },/* 10 */ |
| { 0, 5, 18, 34, 37, 24, 9, 1 },/* 11 */ |
| { 0, 4, 17, 33, 37, 26, 10, 1 },/* 12 */ |
| { 0, 4, 16, 32, 38, 26, 10, 2 },/* 13 */ |
| { 0, 3, 15, 31, 38, 28, 11, 2 },/* 14 */ |
| { 0, 3, 14, 30, 38, 29, 12, 2 } /* 15 */ |
| } |
| }; |
| |
| /* 4-tap Filter Coefficient */ |
| const int v_coef_4t[7][16][4] = { |
| { /* Ratio <= 65536 (~8:8) */ |
| { 0, 128, 0, 0 },/* 0 */ |
| { -4, 127, 5, 0 },/* 1 */ |
| { -6, 124, 11, -1 },/* 2 */ |
| { -8, 118, 19, -1 },/* 3 */ |
| { -8, 111, 27, -2 },/* 4 */ |
| { -8, 102, 37, -3 },/* 5 */ |
| { -8, 92, 48, -4 },/* 6 */ |
| { -7, 81, 59, -5 },/* 7 */ |
| { -6, 70, 70, -6 },/* 8 */ |
| { -5, 59, 81, -7 },/* 9 */ |
| { -4, 48, 92, -8 },/* 10 */ |
| { -3, 37, 102, -8 },/* 11 */ |
| { -2, 27, 111, -8 },/* 12 */ |
| { -1, 19, 118, -8 },/* 13 */ |
| { -1, 11, 124, -6 },/* 14 */ |
| { 0, 5, 127, -4 } /* 15 */ |
| }, |
| { /* 65536 < Ratio <= 74898 (~8:7) */ |
| { 8, 112, 8, 0 },/* 0 */ |
| { 4, 111, 14, -1 },/* 1 */ |
| { 1, 109, 20, -2 },/* 2 */ |
| { -2, 105, 27, -2 },/* 3 */ |
| { -3, 100, 34, -3 },/* 4 */ |
| { -5, 93, 43, -3 },/* 5 */ |
| { -5, 86, 51, -4 },/* 6 */ |
| { -5, 77, 60, -4 },/* 7 */ |
| { -5, 69, 69, -5 },/* 8 */ |
| { -4, 60, 77, -5 },/* 9 */ |
| { -4, 51, 86, -5 },/* 10 */ |
| { -3, 43, 93, -5 },/* 11 */ |
| { -3, 34, 100, -3 },/* 12 */ |
| { -2, 27, 105, -2 },/* 13 */ |
| { -2, 20, 109, 1 },/* 14 */ |
| { -1, 14, 111, 4 } /* 15 */ |
| }, |
| { /* 74898 < Ratio <= 87381 (~8:6) */ |
| { 16, 96, 16, 0 },/* 0 */ |
| { 12, 97, 21, -2 },/* 1 */ |
| { 8, 96, 26, -2 },/* 2 */ |
| { 5, 93, 32, -2 },/* 3 */ |
| { 2, 89, 39, -2 },/* 4 */ |
| { 0, 84, 46, -2 },/* 5 */ |
| { -1, 79, 53, -3 },/* 6 */ |
| { -2, 73, 59, -2 },/* 7 */ |
| { -2, 66, 66, -2 },/* 8 */ |
| { -2, 59, 73, -2 },/* 9 */ |
| { -3, 53, 79, -1 },/* 10 */ |
| { -2, 46, 84, 0 },/* 11 */ |
| { -2, 39, 89, 2 },/* 12 */ |
| { -2, 32, 93, 5 },/* 13 */ |
| { -2, 26, 96, 8 },/* 14 */ |
| { -2, 21, 97, 12 } /* 15 */ |
| }, |
| { /* 87381 < Ratio <= 104857 (~8:5) */ |
| { 22, 84, 22, 0 },/* 0 */ |
| { 18, 85, 26, -1 },/* 1 */ |
| { 14, 84, 31, -1 },/* 2 */ |
| { 11, 82, 36, -1 },/* 3 */ |
| { 8, 79, 42, -1 },/* 4 */ |
| { 6, 76, 47, -1 },/* 5 */ |
| { 4, 72, 52, 0 },/* 6 */ |
| { 2, 68, 58, 0 },/* 7 */ |
| { 1, 63, 63, 1 },/* 8 */ |
| { 0, 58, 68, 2 },/* 9 */ |
| { 0, 52, 72, 4 },/* 10 */ |
| { -1, 47, 76, 6 },/* 11 */ |
| { -1, 42, 79, 8 },/* 12 */ |
| { -1, 36, 82, 11 },/* 13 */ |
| { -1, 31, 84, 14 },/* 14 */ |
| { -1, 26, 85, 18 } /* 15 */ |
| }, |
| { /* 104857 < Ratio <= 131072 (~8:4) */ |
| { 26, 76, 26, 0 },/* 0 */ |
| { 22, 76, 30, 0 },/* 1 */ |
| { 19, 75, 34, 0 },/* 2 */ |
| { 16, 73, 38, 1 },/* 3 */ |
| { 13, 71, 43, 1 },/* 4 */ |
| { 10, 69, 47, 2 },/* 5 */ |
| { 8, 66, 51, 3 },/* 6 */ |
| { 6, 63, 55, 4 },/* 7 */ |
| { 5, 59, 59, 5 },/* 8 */ |
| { 4, 55, 63, 6 },/* 9 */ |
| { 3, 51, 66, 8 },/* 10 */ |
| { 2, 47, 69, 10 },/* 11 */ |
| { 1, 43, 71, 13 },/* 12 */ |
| { 1, 38, 73, 16 },/* 13 */ |
| { 0, 34, 75, 19 },/* 14 */ |
| { 0, 30, 76, 22 } /* 15 */ |
| }, |
| { /* 131072 < Ratio <= 174762 (~8:3) */ |
| { 29, 70, 29, 0 },/* 0 */ |
| { 26, 68, 32, 2 },/* 1 */ |
| { 23, 67, 36, 2 },/* 2 */ |
| { 20, 66, 39, 3 },/* 3 */ |
| { 17, 65, 43, 3 },/* 4 */ |
| { 15, 63, 46, 4 },/* 5 */ |
| { 12, 61, 50, 5 },/* 6 */ |
| { 10, 58, 53, 7 },/* 7 */ |
| { 8, 56, 56, 8 },/* 8 */ |
| { 7, 53, 58, 10 },/* 9 */ |
| { 5, 50, 61, 12 },/* 10 */ |
| { 4, 46, 63, 15 },/* 11 */ |
| { 3, 43, 65, 17 },/* 12 */ |
| { 3, 39, 66, 20 },/* 13 */ |
| { 2, 36, 67, 23 },/* 14 */ |
| { 2, 32, 68, 26 } /* 15 */ |
| }, |
| { /* 174762 < Ratio <= 262144 (~8:2) */ |
| { 32, 64, 32, 0 },/* 0 */ |
| { 28, 63, 34, 3 },/* 1 */ |
| { 25, 62, 37, 4 },/* 2 */ |
| { 22, 62, 40, 4 },/* 3 */ |
| { 19, 61, 43, 5 },/* 4 */ |
| { 17, 59, 46, 6 },/* 5 */ |
| { 15, 58, 48, 7 },/* 6 */ |
| { 13, 55, 51, 9 },/* 7 */ |
| { 11, 53, 53, 11 },/* 8 */ |
| { 9, 51, 55, 13 },/* 9 */ |
| { 7, 48, 58, 15 },/* 10 */ |
| { 6, 46, 59, 17 },/* 11 */ |
| { 5, 43, 61, 19 },/* 12 */ |
| { 4, 40, 62, 22 },/* 13 */ |
| { 4, 37, 62, 25 },/* 14 */ |
| { 3, 34, 63, 28 } /* 15 */ |
| } |
| }; |
