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| 1 : | edgomez | 406 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Global structures, constants - | ||
| 5 : | * | ||
| 6 : | edgomez | 603 | * Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
| 7 : | edgomez | 406 | * |
| 8 : | edgomez | 648 | * This file is part of XviD, a free MPEG-4 video encoder/decoder |
| 9 : | edgomez | 406 | * |
| 10 : | edgomez | 648 | * XviD is free software; you can redistribute it and/or modify it |
| 11 : | * under the terms of the GNU General Public License as published by | ||
| 12 : | * the Free Software Foundation; either version 2 of the License, or | ||
| 13 : | edgomez | 406 | * (at your option) any later version. |
| 14 : | * | ||
| 15 : | * This program is distributed in the hope that it will be useful, | ||
| 16 : | edgomez | 648 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 : | edgomez | 406 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 : | * GNU General Public License for more details. | ||
| 19 : | * | ||
| 20 : | * You should have received a copy of the GNU General Public License | ||
| 21 : | edgomez | 648 | * along with this program; if not, write to the Free Software |
| 22 : | edgomez | 406 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 : | * | ||
| 24 : | edgomez | 648 | * Under section 8 of the GNU General Public License, the copyright |
| 25 : | * holders of XVID explicitly forbid distribution in the following | ||
| 26 : | * countries: | ||
| 27 : | edgomez | 406 | * |
| 28 : | edgomez | 648 | * - Japan |
| 29 : | * - United States of America | ||
| 30 : | * | ||
| 31 : | * Linking XviD statically or dynamically with other modules is making a | ||
| 32 : | * combined work based on XviD. Thus, the terms and conditions of the | ||
| 33 : | * GNU General Public License cover the whole combination. | ||
| 34 : | * | ||
| 35 : | * As a special exception, the copyright holders of XviD give you | ||
| 36 : | * permission to link XviD with independent modules that communicate with | ||
| 37 : | * XviD solely through the VFW1.1 and DShow interfaces, regardless of the | ||
| 38 : | * license terms of these independent modules, and to copy and distribute | ||
| 39 : | * the resulting combined work under terms of your choice, provided that | ||
| 40 : | * every copy of the combined work is accompanied by a complete copy of | ||
| 41 : | * the source code of XviD (the version of XviD used to produce the | ||
| 42 : | * combined work), being distributed under the terms of the GNU General | ||
| 43 : | * Public License plus this exception. An independent module is a module | ||
| 44 : | * which is not derived from or based on XviD. | ||
| 45 : | * | ||
| 46 : | * Note that people who make modified versions of XviD are not obligated | ||
| 47 : | * to grant this special exception for their modified versions; it is | ||
| 48 : | * their choice whether to do so. The GNU General Public License gives | ||
| 49 : | * permission to release a modified version without this exception; this | ||
| 50 : | * exception also makes it possible to release a modified version which | ||
| 51 : | * carries forward this exception. | ||
| 52 : | * | ||
| 53 : | edgomez | 971 | * $Id: global.h,v 1.18.2.1 2003-04-04 22:12:07 edgomez Exp $ |
| 54 : | edgomez | 648 | * |
| 55 : | edgomez | 406 | ****************************************************************************/ |
| 56 : | |||
| 57 : | Isibaar | 3 | #ifndef _GLOBAL_H_ |
| 58 : | #define _GLOBAL_H_ | ||
| 59 : | |||
| 60 : | h | 101 | #include "xvid.h" |
| 61 : | Isibaar | 3 | #include "portab.h" |
| 62 : | |||
| 63 : | suxen_drol | 118 | /* --- macroblock modes --- */ |
| 64 : | Isibaar | 3 | |
| 65 : | #define MODE_INTER 0 | ||
| 66 : | #define MODE_INTER_Q 1 | ||
| 67 : | #define MODE_INTER4V 2 | ||
| 68 : | #define MODE_INTRA 3 | ||
| 69 : | #define MODE_INTRA_Q 4 | ||
| 70 : | #define MODE_STUFFING 7 | ||
| 71 : | #define MODE_NOT_CODED 16 | ||
| 72 : | |||
| 73 : | suxen_drol | 118 | /* --- bframe specific --- */ |
| 74 : | |||
| 75 : | #define MODE_DIRECT 0 | ||
| 76 : | #define MODE_INTERPOLATE 1 | ||
| 77 : | #define MODE_BACKWARD 2 | ||
| 78 : | #define MODE_FORWARD 3 | ||
| 79 : | chenm001 | 156 | #define MODE_DIRECT_NONE_MV 4 |
| 80 : | suxen_drol | 118 | |
| 81 : | |||
| 82 : | Isibaar | 3 | typedef struct |
| 83 : | { | ||
| 84 : | h | 101 | uint32_t bufa; |
| 85 : | uint32_t bufb; | ||
| 86 : | uint32_t buf; | ||
| 87 : | uint32_t pos; | ||
| 88 : | uint32_t *tail; | ||
| 89 : | uint32_t *start; | ||
| 90 : | uint32_t length; | ||
| 91 : | edgomez | 971 | uint32_t initpos; |
| 92 : | edgomez | 195 | } |
| 93 : | h | 101 | Bitstream; |
| 94 : | Isibaar | 3 | |
| 95 : | |||
| 96 : | #define MBPRED_SIZE 15 | ||
| 97 : | |||
| 98 : | |||
| 99 : | typedef struct | ||
| 100 : | { | ||
| 101 : | edgomez | 677 | /* decoder/encoder */ |
| 102 : | Isibaar | 3 | VECTOR mvs[4]; |
| 103 : | |||
| 104 : | chl | 172 | short int pred_values[6][MBPRED_SIZE]; |
| 105 : | int acpred_directions[6]; | ||
| 106 : | edgomez | 195 | |
| 107 : | Isibaar | 3 | int mode; |
| 108 : | edgomez | 677 | int quant; /* absolute quant */ |
| 109 : | Isibaar | 3 | |
| 110 : | h | 69 | int field_dct; |
| 111 : | int field_pred; | ||
| 112 : | int field_for_top; | ||
| 113 : | int field_for_bot; | ||
| 114 : | |||
| 115 : | edgomez | 677 | /* encoder specific */ |
| 116 : | Isibaar | 3 | |
| 117 : | chl | 172 | VECTOR mv16; |
| 118 : | Isibaar | 3 | VECTOR pmvs[4]; |
| 119 : | chl | 172 | |
| 120 : | edgomez | 677 | int32_t sad8[4]; /* SAD values for inter4v-VECTORs */ |
| 121 : | int32_t sad16; /* SAD value for inter-VECTOR */ | ||
| 122 : | chl | 172 | |
| 123 : | Isibaar | 3 | int dquant; |
| 124 : | int cbp; | ||
| 125 : | |||
| 126 : | edgomez | 677 | /* bframe stuff */ |
| 127 : | suxen_drol | 118 | |
| 128 : | VECTOR b_mvs[4]; | ||
| 129 : | VECTOR b_pmvs[4]; | ||
| 130 : | |||
| 131 : | edgomez | 677 | /* bframe direct mode */ |
| 132 : | chl | 338 | |
| 133 : | VECTOR directmv[4]; | ||
| 134 : | VECTOR deltamv; | ||
| 135 : | |||
| 136 : | chenm001 | 156 | int mb_type; |
| 137 : | int dbquant; | ||
| 138 : | |||
| 139 : | edgomez | 677 | /* stuff for block based ME (needed for Qpel ME) */ |
| 140 : | /* backup of last integer ME vectors/sad */ | ||
| 141 : | chl | 277 | |
| 142 : | VECTOR i_mv16; | ||
| 143 : | chl | 287 | VECTOR i_mvs[4]; |
| 144 : | chl | 277 | |
| 145 : | edgomez | 677 | int32_t i_sad8[4]; /* SAD values for inter4v-VECTORs */ |
| 146 : | int32_t i_sad16; /* SAD value for inter-VECTOR */ | ||
| 147 : | chl | 277 | |
| 148 : | edgomez | 195 | } |
| 149 : | MACROBLOCK; | ||
| 150 : | Isibaar | 3 | |
| 151 : | edgomez | 195 | static __inline int8_t |
| 152 : | get_dc_scaler(uint32_t quant, | ||
| 153 : | uint32_t lum) | ||
| 154 : | Isibaar | 3 | { |
| 155 : | edgomez | 195 | if (quant < 5) |
| 156 : | return 8; | ||
| 157 : | Isibaar | 3 | |
| 158 : | edgomez | 195 | if (quant < 25 && !lum) |
| 159 : | edgomez | 723 | return (int8_t)((quant + 13) / 2); |
| 160 : | Isibaar | 3 | |
| 161 : | edgomez | 195 | if (quant < 9) |
| 162 : | edgomez | 723 | return (int8_t)(2 * quant); |
| 163 : | Isibaar | 3 | |
| 164 : | edgomez | 195 | if (quant < 25) |
| 165 : | edgomez | 723 | return (int8_t)(quant + 8); |
| 166 : | Isibaar | 3 | |
| 167 : | edgomez | 195 | if (lum) |
| 168 : | edgomez | 723 | return (int8_t)(2 * quant - 16); |
| 169 : | Isibaar | 3 | else |
| 170 : | edgomez | 723 | return (int8_t)(quant - 6); |
| 171 : | Isibaar | 3 | } |
| 172 : | |||
| 173 : | edgomez | 677 | /* useful macros */ |
| 174 : | suxen_drol | 118 | |
| 175 : | #define MIN(X, Y) ((X)<(Y)?(X):(Y)) | ||
| 176 : | #define MAX(X, Y) ((X)>(Y)?(X):(Y)) | ||
| 177 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
| 178 : | #define SIGN(X) (((X)>0)?1:-1) | ||
| 179 : | |||
| 180 : | |||
| 181 : | edgomez | 406 | #endif /* _GLOBAL_H_ */ |
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