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Revision 1.13.2.3 - (view) (download)
| 1 : | edgomez | 1.13.2.1 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Quantization matrix management code - | ||
| 5 : | * | ||
| 6 : | * Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> | ||
| 7 : | * 2002 Peter Ross <pross@xvid.org> | ||
| 8 : | * | ||
| 9 : | * This program is free software ; you can redistribute it and/or modify | ||
| 10 : | * it under the terms of the GNU General Public License as published by | ||
| 11 : | * the Free Software Foundation ; either version 2 of the License, or | ||
| 12 : | * (at your option) any later version. | ||
| 13 : | * | ||
| 14 : | * This program is distributed in the hope that it will be useful, | ||
| 15 : | * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
| 16 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 : | * GNU General Public License for more details. | ||
| 18 : | * | ||
| 19 : | * You should have received a copy of the GNU General Public License | ||
| 20 : | * along with this program ; if not, write to the Free Software | ||
| 21 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 22 : | * | ||
| 23 : | * $Id$ | ||
| 24 : | * | ||
| 25 : | ****************************************************************************/ | ||
| 26 : | |||
| 27 : | Isibaar | 1.2 | #include "quant_matrix.h" |
| 28 : | Isibaar | 1.1 | |
| 29 : | edgomez | 1.13 | #define FIX(X) (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1)) |
| 30 : | #define FIXL(X) ((1UL << 16) / (X) - 1) | ||
| 31 : | edgomez | 1.6 | |
| 32 : | edgomez | 1.13.2.2 | /***************************************************************************** |
| 33 : | * Default matrices | ||
| 34 : | ****************************************************************************/ | ||
| 35 : | |||
| 36 : | static const uint8_t default_intra_matrix[64] = { | ||
| 37 : | 8, 17, 18, 19, 21, 23, 25, 27, | ||
| 38 : | edgomez | 1.5 | 17, 18, 19, 21, 23, 25, 27, 28, |
| 39 : | 20, 21, 22, 23, 24, 26, 28, 30, | ||
| 40 : | 21, 22, 23, 24, 26, 28, 30, 32, | ||
| 41 : | 22, 23, 24, 26, 28, 30, 32, 35, | ||
| 42 : | 23, 24, 26, 28, 30, 32, 35, 38, | ||
| 43 : | 25, 26, 28, 30, 32, 35, 38, 41, | ||
| 44 : | 27, 28, 30, 32, 35, 38, 41, 45 | ||
| 45 : | Isibaar | 1.3 | }; |
| 46 : | Isibaar | 1.1 | |
| 47 : | edgomez | 1.13.2.2 | static const uint8_t default_inter_matrix[64] = { |
| 48 : | 16, 17, 18, 19, 20, 21, 22, 23, | ||
| 49 : | 17, 18, 19, 20, 21, 22, 23, 24, | ||
| 50 : | 18, 19, 20, 21, 22, 23, 24, 25, | ||
| 51 : | 19, 20, 21, 22, 23, 24, 26, 27, | ||
| 52 : | 20, 21, 22, 23, 25, 26, 27, 28, | ||
| 53 : | 21, 22, 23, 24, 26, 27, 28, 30, | ||
| 54 : | 22, 23, 24, 26, 27, 28, 30, 31, | ||
| 55 : | 23, 24, 25, 27, 28, 30, 31, 33 | ||
| 56 : | }; | ||
| 57 : | |||
| 58 : | edgomez | 1.13.2.3 | const uint16_t * |
| 59 : | get_intra_matrix(const uint16_t * mpeg_quant_matrices) | ||
| 60 : | edgomez | 1.5 | { |
| 61 : | edgomez | 1.13.2.3 | return(mpeg_quant_matrices + 0*64); |
| 62 : | Isibaar | 1.2 | } |
| 63 : | Isibaar | 1.1 | |
| 64 : | edgomez | 1.13.2.3 | const uint16_t * |
| 65 : | get_inter_matrix(const uint16_t * mpeg_quant_matrices) | ||
| 66 : | edgomez | 1.5 | { |
| 67 : | edgomez | 1.13.2.3 | return(mpeg_quant_matrices + 4*64); |
| 68 : | Isibaar | 1.4 | } |
| 69 : | |||
| 70 : | edgomez | 1.13.2.2 | const uint8_t * |
| 71 : | edgomez | 1.5 | get_default_intra_matrix(void) |
| 72 : | { | ||
| 73 : | Isibaar | 1.3 | return default_intra_matrix; |
| 74 : | } | ||
| 75 : | |||
| 76 : | edgomez | 1.13.2.2 | const uint8_t * |
| 77 : | edgomez | 1.5 | get_default_inter_matrix(void) |
| 78 : | { | ||
| 79 : | Isibaar | 1.3 | return default_inter_matrix; |
| 80 : | Isibaar | 1.2 | } |
| 81 : | Isibaar | 1.1 | |
| 82 : | edgomez | 1.13.2.3 | int |
| 83 : | is_custom_intra_matrix(const uint16_t * mpeg_quant_matrices) | ||
| 84 : | Isibaar | 1.1 | { |
| 85 : | edgomez | 1.13.2.3 | int i; |
| 86 : | const uint16_t *intra_matrix = get_intra_matrix(mpeg_quant_matrices); | ||
| 87 : | const uint8_t *def_intra_matrix = get_default_intra_matrix(); | ||
| 88 : | edgomez | 1.5 | |
| 89 : | edgomez | 1.13.2.3 | for (i = 0; i < 64; i++) { |
| 90 : | if(intra_matrix[i] != def_intra_matrix[i]) | ||
| 91 : | return 1; | ||
| 92 : | } | ||
| 93 : | return 0; | ||
| 94 : | } | ||
| 95 : | |||
| 96 : | int | ||
| 97 : | is_custom_inter_matrix(const uint16_t * mpeg_quant_matrices) | ||
| 98 : | { | ||
| 99 : | int i; | ||
| 100 : | const uint16_t *inter_matrix = get_inter_matrix(mpeg_quant_matrices); | ||
| 101 : | const uint8_t *def_inter_matrix = get_default_inter_matrix(); | ||
| 102 : | Isibaar | 1.2 | |
| 103 : | edgomez | 1.5 | for (i = 0; i < 64; i++) { |
| 104 : | edgomez | 1.13.2.3 | if(inter_matrix[i] != (uint16_t)def_inter_matrix[i]) |
| 105 : | return 1; | ||
| 106 : | } | ||
| 107 : | return 0; | ||
| 108 : | } | ||
| 109 : | Isibaar | 1.2 | |
| 110 : | edgomez | 1.13.2.3 | void |
| 111 : | set_intra_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix) | ||
| 112 : | { | ||
| 113 : | int i; | ||
| 114 : | uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; | ||
| 115 : | uint16_t *intra_matrix1 = mpeg_quant_matrices + 1*64; | ||
| 116 : | uint16_t *intra_matrix_fix = mpeg_quant_matrices + 2*64; | ||
| 117 : | uint16_t *intra_matrix_fixl = mpeg_quant_matrices + 3*64; | ||
| 118 : | |||
| 119 : | for (i = 0; i < 64; i++) { | ||
| 120 : | intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i]; | ||
| 121 : | intra_matrix1[i] = (intra_matrix[i]>>1); | ||
| 122 : | edgomez | 1.13 | intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0); |
| 123 : | Isibaar | 1.2 | intra_matrix_fix[i] = FIX(intra_matrix[i]); |
| 124 : | edgomez | 1.13 | intra_matrix_fixl[i] = FIXL(intra_matrix[i]); |
| 125 : | Isibaar | 1.1 | } |
| 126 : | Isibaar | 1.2 | } |
| 127 : | Isibaar | 1.1 | |
| 128 : | edgomez | 1.13.2.3 | void |
| 129 : | set_inter_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix) | ||
| 130 : | Isibaar | 1.2 | { |
| 131 : | edgomez | 1.13.2.3 | int i; |
| 132 : | uint16_t *inter_matrix = mpeg_quant_matrices + 4*64; | ||
| 133 : | uint16_t *inter_matrix1 = mpeg_quant_matrices + 5*64; | ||
| 134 : | uint16_t *inter_matrix_fix = mpeg_quant_matrices + 6*64; | ||
| 135 : | uint16_t *inter_matrix_fixl = mpeg_quant_matrices + 7*64; | ||
| 136 : | Isibaar | 1.2 | |
| 137 : | edgomez | 1.5 | for (i = 0; i < 64; i++) { |
| 138 : | edgomez | 1.13 | inter_matrix1[i] = ((inter_matrix[i] = (int16_t) matrix[i])>>1); |
| 139 : | inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0); | ||
| 140 : | Isibaar | 1.2 | inter_matrix_fix[i] = FIX(inter_matrix[i]); |
| 141 : | edgomez | 1.13 | inter_matrix_fixl[i] = FIXL(inter_matrix[i]); |
| 142 : | Isibaar | 1.2 | } |
| 143 : | edgomez | 1.13.2.3 | } |
| 144 : | |||
| 145 : | void | ||
| 146 : | init_mpeg_matrix(uint16_t * mpeg_quant_matrices) { | ||
| 147 : | |||
| 148 : | set_intra_matrix(mpeg_quant_matrices, default_intra_matrix); | ||
| 149 : | set_inter_matrix(mpeg_quant_matrices, default_inter_matrix); | ||
| 150 : | Isibaar | 1.1 | } |
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