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Original Path: trunk/xvidcore/src/motion/motion_comp.c
| 1 : | chl | 430 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Motion Compensation module - | ||
| 5 : | * | ||
| 6 : | edgomez | 605 | * Copyright(C) 2002 Peter Ross <pross@xvid.org> |
| 7 : | chl | 430 | * |
| 8 : | edgomez | 652 | * This file is part of XviD, a free MPEG-4 video encoder/decoder |
| 9 : | chl | 430 | * |
| 10 : | edgomez | 652 | * 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 : | chl | 430 | * the Free Software Foundation; either version 2 of the License, or |
| 13 : | * (at your option) any later version. | ||
| 14 : | * | ||
| 15 : | * This program is distributed in the hope that it will be useful, | ||
| 16 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 17 : | * 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 : | * along with this program; if not, write to the Free Software | ||
| 22 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 23 : | * | ||
| 24 : | edgomez | 652 | * Under section 8 of the GNU General Public License, the copyright |
| 25 : | * holders of XVID explicitly forbid distribution in the following | ||
| 26 : | * countries: | ||
| 27 : | * | ||
| 28 : | * - 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 | 677 | * $Id: motion_comp.c,v 1.16 2002-11-26 23:44:10 edgomez Exp $ |
| 54 : | edgomez | 652 | * |
| 55 : | chl | 430 | *************************************************************************/ |
| 56 : | suxen_drol | 118 | |
| 57 : | Isibaar | 3 | #include "../encoder.h" |
| 58 : | #include "../utils/mbfunctions.h" | ||
| 59 : | #include "../image/interpolate8x8.h" | ||
| 60 : | #include "../utils/timer.h" | ||
| 61 : | suxen_drol | 118 | #include "motion.h" |
| 62 : | Isibaar | 3 | |
| 63 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
| 64 : | #define SIGN(X) (((X)>0)?1:-1) | ||
| 65 : | |||
| 66 : | edgomez | 195 | static __inline void |
| 67 : | compensate8x8_halfpel(int16_t * const dct_codes, | ||
| 68 : | uint8_t * const cur, | ||
| 69 : | const uint8_t * const ref, | ||
| 70 : | const uint8_t * const refh, | ||
| 71 : | const uint8_t * const refv, | ||
| 72 : | const uint8_t * const refhv, | ||
| 73 : | const uint32_t x, | ||
| 74 : | const uint32_t y, | ||
| 75 : | const int32_t dx, | ||
| 76 : | const int dy, | ||
| 77 : | const uint32_t stride) | ||
| 78 : | Isibaar | 3 | { |
| 79 : | edgomez | 195 | int32_t ddx, ddy; |
| 80 : | Isibaar | 3 | |
| 81 : | edgomez | 677 | switch (((dx & 1) << 1) + (dy & 1)) /* ((dx%2)?2:0)+((dy%2)?1:0) */ |
| 82 : | edgomez | 195 | { |
| 83 : | case 0: | ||
| 84 : | ddx = dx / 2; | ||
| 85 : | ddy = dy / 2; | ||
| 86 : | transfer_8to16sub(dct_codes, cur + y * stride + x, | ||
| 87 : | Isibaar | 209 | ref + (int) ((y + ddy) * stride + x + ddx), stride); |
| 88 : | Isibaar | 3 | break; |
| 89 : | |||
| 90 : | edgomez | 195 | case 1: |
| 91 : | ddx = dx / 2; | ||
| 92 : | ddy = (dy - 1) / 2; | ||
| 93 : | transfer_8to16sub(dct_codes, cur + y * stride + x, | ||
| 94 : | Isibaar | 209 | refv + (int) ((y + ddy) * stride + x + ddx), stride); |
| 95 : | Isibaar | 3 | break; |
| 96 : | |||
| 97 : | edgomez | 195 | case 2: |
| 98 : | ddx = (dx - 1) / 2; | ||
| 99 : | ddy = dy / 2; | ||
| 100 : | transfer_8to16sub(dct_codes, cur + y * stride + x, | ||
| 101 : | Isibaar | 209 | refh + (int) ((y + ddy) * stride + x + ddx), stride); |
| 102 : | Isibaar | 3 | break; |
| 103 : | |||
| 104 : | edgomez | 677 | default: /* case 3: */ |
| 105 : | edgomez | 195 | ddx = (dx - 1) / 2; |
| 106 : | ddy = (dy - 1) / 2; | ||
| 107 : | transfer_8to16sub(dct_codes, cur + y * stride + x, | ||
| 108 : | Isibaar | 209 | refhv + (int) ((y + ddy) * stride + x + ddx), stride); |
| 109 : | Isibaar | 3 | break; |
| 110 : | edgomez | 195 | } |
| 111 : | Isibaar | 3 | } |
| 112 : | |||
| 113 : | |||
| 114 : | |||
| 115 : | edgomez | 195 | void |
| 116 : | MBMotionCompensation(MACROBLOCK * const mb, | ||
| 117 : | const uint32_t i, | ||
| 118 : | const uint32_t j, | ||
| 119 : | const IMAGE * const ref, | ||
| 120 : | const IMAGE * const refh, | ||
| 121 : | const IMAGE * const refv, | ||
| 122 : | const IMAGE * const refhv, | ||
| 123 : | IMAGE * const cur, | ||
| 124 : | int16_t * dct_codes, | ||
| 125 : | const uint32_t width, | ||
| 126 : | const uint32_t height, | ||
| 127 : | const uint32_t edged_width, | ||
| 128 : | const uint32_t rounding) | ||
| 129 : | Isibaar | 3 | { |
| 130 : | static const uint32_t roundtab[16] = | ||
| 131 : | { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }; | ||
| 132 : | |||
| 133 : | |||
| 134 : | edgomez | 195 | if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
| 135 : | Isibaar | 3 | int32_t dx = mb->mvs[0].x; |
| 136 : | int32_t dy = mb->mvs[0].y; | ||
| 137 : | |||
| 138 : | edgomez | 195 | compensate8x8_halfpel(&dct_codes[0 * 64], cur->y, ref->y, refh->y, |
| 139 : | refv->y, refhv->y, 16 * i, 16 * j, dx, dy, | ||
| 140 : | edged_width); | ||
| 141 : | compensate8x8_halfpel(&dct_codes[1 * 64], cur->y, ref->y, refh->y, | ||
| 142 : | refv->y, refhv->y, 16 * i + 8, 16 * j, dx, dy, | ||
| 143 : | edged_width); | ||
| 144 : | compensate8x8_halfpel(&dct_codes[2 * 64], cur->y, ref->y, refh->y, | ||
| 145 : | refv->y, refhv->y, 16 * i, 16 * j + 8, dx, dy, | ||
| 146 : | edged_width); | ||
| 147 : | compensate8x8_halfpel(&dct_codes[3 * 64], cur->y, ref->y, refh->y, | ||
| 148 : | refv->y, refhv->y, 16 * i + 8, 16 * j + 8, dx, | ||
| 149 : | dy, edged_width); | ||
| 150 : | Isibaar | 3 | |
| 151 : | dx = (dx & 3) ? (dx >> 1) | 1 : dx / 2; | ||
| 152 : | dy = (dy & 3) ? (dy >> 1) | 1 : dy / 2; | ||
| 153 : | |||
| 154 : | suxen_drol | 152 | /* uv-image-based compensation */ |
| 155 : | chl | 437 | |
| 156 : | edgomez | 195 | interpolate8x8_switch(refv->u, ref->u, 8 * i, 8 * j, dx, dy, |
| 157 : | edged_width / 2, rounding); | ||
| 158 : | transfer_8to16sub(&dct_codes[4 * 64], | ||
| 159 : | cur->u + 8 * j * edged_width / 2 + 8 * i, | ||
| 160 : | refv->u + 8 * j * edged_width / 2 + 8 * i, | ||
| 161 : | edged_width / 2); | ||
| 162 : | Isibaar | 3 | |
| 163 : | edgomez | 195 | interpolate8x8_switch(refv->v, ref->v, 8 * i, 8 * j, dx, dy, |
| 164 : | edged_width / 2, rounding); | ||
| 165 : | transfer_8to16sub(&dct_codes[5 * 64], | ||
| 166 : | cur->v + 8 * j * edged_width / 2 + 8 * i, | ||
| 167 : | refv->v + 8 * j * edged_width / 2 + 8 * i, | ||
| 168 : | edged_width / 2); | ||
| 169 : | chl | 437 | |
| 170 : | edgomez | 677 | } else /* mode == MODE_INTER4V */ |
| 171 : | Isibaar | 3 | { |
| 172 : | int32_t sum, dx, dy; | ||
| 173 : | |||
| 174 : | edgomez | 195 | compensate8x8_halfpel(&dct_codes[0 * 64], cur->y, ref->y, refh->y, |
| 175 : | refv->y, refhv->y, 16 * i, 16 * j, mb->mvs[0].x, | ||
| 176 : | mb->mvs[0].y, edged_width); | ||
| 177 : | compensate8x8_halfpel(&dct_codes[1 * 64], cur->y, ref->y, refh->y, | ||
| 178 : | refv->y, refhv->y, 16 * i + 8, 16 * j, | ||
| 179 : | mb->mvs[1].x, mb->mvs[1].y, edged_width); | ||
| 180 : | compensate8x8_halfpel(&dct_codes[2 * 64], cur->y, ref->y, refh->y, | ||
| 181 : | refv->y, refhv->y, 16 * i, 16 * j + 8, | ||
| 182 : | mb->mvs[2].x, mb->mvs[2].y, edged_width); | ||
| 183 : | compensate8x8_halfpel(&dct_codes[3 * 64], cur->y, ref->y, refh->y, | ||
| 184 : | refv->y, refhv->y, 16 * i + 8, 16 * j + 8, | ||
| 185 : | mb->mvs[3].x, mb->mvs[3].y, edged_width); | ||
| 186 : | Isibaar | 3 | |
| 187 : | sum = mb->mvs[0].x + mb->mvs[1].x + mb->mvs[2].x + mb->mvs[3].x; | ||
| 188 : | edgomez | 195 | dx = (sum ? SIGN(sum) * |
| 189 : | (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) : 0); | ||
| 190 : | Isibaar | 3 | |
| 191 : | sum = mb->mvs[0].y + mb->mvs[1].y + mb->mvs[2].y + mb->mvs[3].y; | ||
| 192 : | edgomez | 195 | dy = (sum ? SIGN(sum) * |
| 193 : | (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) : 0); | ||
| 194 : | Isibaar | 3 | |
| 195 : | /* uv-block-based compensation */ | ||
| 196 : | edgomez | 195 | interpolate8x8_switch(refv->u, ref->u, 8 * i, 8 * j, dx, dy, |
| 197 : | edged_width / 2, rounding); | ||
| 198 : | transfer_8to16sub(&dct_codes[4 * 64], | ||
| 199 : | cur->u + 8 * j * edged_width / 2 + 8 * i, | ||
| 200 : | refv->u + 8 * j * edged_width / 2 + 8 * i, | ||
| 201 : | edged_width / 2); | ||
| 202 : | Isibaar | 3 | |
| 203 : | edgomez | 195 | interpolate8x8_switch(refv->v, ref->v, 8 * i, 8 * j, dx, dy, |
| 204 : | edged_width / 2, rounding); | ||
| 205 : | transfer_8to16sub(&dct_codes[5 * 64], | ||
| 206 : | cur->v + 8 * j * edged_width / 2 + 8 * i, | ||
| 207 : | refv->v + 8 * j * edged_width / 2 + 8 * i, | ||
| 208 : | edged_width / 2); | ||
| 209 : | Isibaar | 3 | } |
| 210 : | } |
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