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| 1 : | edgomez | 1142 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Motion Estimation shared functions - | ||
| 5 : | * | ||
| 6 : | * Copyright(C) 2002 Christoph Lampert <gruel@web.de> | ||
| 7 : | * 2002 Michael Militzer <michael@xvid.org> | ||
| 8 : | * 2002-2003 Radoslaw Czyz <xvid@syskin.cjb.net> | ||
| 9 : | * | ||
| 10 : | * This program is free software ; you can redistribute it and/or modify | ||
| 11 : | * it 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 : | * (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 : | syskin | 1159 | * $Id: motion_inlines.h,v 1.1.2.3 2003-09-29 16:58:37 syskin Exp $ |
| 25 : | edgomez | 1142 | * |
| 26 : | ****************************************************************************/ | ||
| 27 : | |||
| 28 : | #ifndef _MOTION_INLINES_ | ||
| 29 : | #define _MOTION_INLINES_ | ||
| 30 : | |||
| 31 : | #include <stdlib.h> | ||
| 32 : | |||
| 33 : | /* | ||
| 34 : | * Calculate the min/max range | ||
| 35 : | * relative to the _MACROBLOCK_ position | ||
| 36 : | */ | ||
| 37 : | static void __inline | ||
| 38 : | get_range(int32_t * const min_dx, | ||
| 39 : | int32_t * const max_dx, | ||
| 40 : | int32_t * const min_dy, | ||
| 41 : | int32_t * const max_dy, | ||
| 42 : | const uint32_t x, | ||
| 43 : | const uint32_t y, | ||
| 44 : | uint32_t block_sz, /* block dimension, 3(8) or 4(16) */ | ||
| 45 : | const uint32_t width, | ||
| 46 : | const uint32_t height, | ||
| 47 : | const uint32_t fcode, | ||
| 48 : | const int precision, /* 2 for qpel, 1 for halfpel */ | ||
| 49 : | const int rrv) | ||
| 50 : | { | ||
| 51 : | int k; | ||
| 52 : | const int search_range = 16 << fcode; | ||
| 53 : | int high = search_range - 1; | ||
| 54 : | int low = -search_range; | ||
| 55 : | |||
| 56 : | if (rrv) { | ||
| 57 : | high = RRV_MV_SCALEUP(high); | ||
| 58 : | low = RRV_MV_SCALEUP(low); | ||
| 59 : | block_sz++; | ||
| 60 : | } | ||
| 61 : | |||
| 62 : | k = (int)(width - (x<<block_sz))<<precision; | ||
| 63 : | *max_dx = MIN(high, k); | ||
| 64 : | k = (int)(height - (y<<block_sz))<<precision; | ||
| 65 : | *max_dy = MIN(high, k); | ||
| 66 : | |||
| 67 : | k = (-(int)((x+1)<<block_sz))<<precision; | ||
| 68 : | *min_dx = MAX(low, k); | ||
| 69 : | k = (-(int)((y+1)<<block_sz))<<precision; | ||
| 70 : | *min_dy = MAX(low, k); | ||
| 71 : | } | ||
| 72 : | |||
| 73 : | /* mv.length table */ | ||
| 74 : | static const int mvtab[64] = { | ||
| 75 : | 1, 2, 3, 4, 6, 7, 7, 7, | ||
| 76 : | 9, 9, 9, 10, 10, 10, 10, 10, | ||
| 77 : | 10, 10, 10, 10, 10, 10, 10, 10, | ||
| 78 : | 10, 11, 11, 11, 11, 11, 11, 12, | ||
| 79 : | 12, 12, 12, 12, 12, 12, 12, 12, | ||
| 80 : | 12, 12, 12, 12, 12, 12, 12, 12, | ||
| 81 : | syskin | 1159 | 12, 12, 12, 12, 12, 12, 12, 12 |
| 82 : | edgomez | 1142 | }; |
| 83 : | |||
| 84 : | static __inline uint32_t | ||
| 85 : | d_mv_bits(int x, int y, const VECTOR pred, const uint32_t iFcode, const int qpel, const int rrv) | ||
| 86 : | { | ||
| 87 : | int bits; | ||
| 88 : | const int q = (1 << (iFcode - 1)) - 1; | ||
| 89 : | |||
| 90 : | x <<= qpel; | ||
| 91 : | y <<= qpel; | ||
| 92 : | if (rrv) { x = RRV_MV_SCALEDOWN(x); y = RRV_MV_SCALEDOWN(y); } | ||
| 93 : | |||
| 94 : | x -= pred.x; | ||
| 95 : | bits = (x != 0 ? iFcode:0); | ||
| 96 : | x = abs(x); | ||
| 97 : | x += q; | ||
| 98 : | x >>= (iFcode - 1); | ||
| 99 : | bits += mvtab[x]; | ||
| 100 : | |||
| 101 : | y -= pred.y; | ||
| 102 : | bits += (y != 0 ? iFcode:0); | ||
| 103 : | y = abs(y); | ||
| 104 : | y += q; | ||
| 105 : | y >>= (iFcode - 1); | ||
| 106 : | bits += mvtab[y]; | ||
| 107 : | |||
| 108 : | return bits; | ||
| 109 : | } | ||
| 110 : | |||
| 111 : | static __inline const uint8_t * | ||
| 112 : | GetReference(const int x, const int y, const SearchData * const data) | ||
| 113 : | { | ||
| 114 : | const int picture = ((x&1)<<1) | (y&1); | ||
| 115 : | const int offset = (x>>1) + (y>>1)*data->iEdgedWidth; | ||
| 116 : | return data->RefP[picture] + offset; | ||
| 117 : | } | ||
| 118 : | |||
| 119 : | static __inline const uint8_t * | ||
| 120 : | GetReferenceB(const int x, const int y, const uint32_t dir, const SearchData * const data) | ||
| 121 : | { | ||
| 122 : | /* dir : 0 = forward, 1 = backward */ | ||
| 123 : | const uint8_t *const *const direction = ( dir == 0 ? data->RefP : data->b_RefP ); | ||
| 124 : | const int picture = ((x&1)<<1) | (y&1); | ||
| 125 : | const int offset = (x>>1) + (y>>1)*data->iEdgedWidth; | ||
| 126 : | return direction[picture] + offset; | ||
| 127 : | } | ||
| 128 : | |||
| 129 : | static __inline void | ||
| 130 : | ZeroMacroblockP(MACROBLOCK *pMB, const int32_t sad) | ||
| 131 : | { | ||
| 132 : | pMB->mode = MODE_INTER; | ||
| 133 : | pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = zeroMV; | ||
| 134 : | pMB->qmvs[0] = pMB->qmvs[1] = pMB->qmvs[2] = pMB->qmvs[3] = zeroMV; | ||
| 135 : | pMB->sad16 = pMB->sad8[0] = pMB->sad8[1] = pMB->sad8[2] = pMB->sad8[3] = sad; | ||
| 136 : | syskin | 1158 | pMB->mcsel = 0; |
| 137 : | edgomez | 1142 | } |
| 138 : | |||
| 139 : | /* check if given vector is equal to any vector checked before */ | ||
| 140 : | static __inline int | ||
| 141 : | syskin | 1158 | vector_repeats(const VECTOR * const pmv, const unsigned int i) |
| 142 : | edgomez | 1142 | { |
| 143 : | unsigned int j; | ||
| 144 : | for (j = 0; j < i; j++) | ||
| 145 : | if (MVequal(pmv[i], pmv[j])) return 1; /* same vector has been checked already */ | ||
| 146 : | return 0; | ||
| 147 : | } | ||
| 148 : | |||
| 149 : | /* make a binary mask that prevents diamonds/squares | ||
| 150 : | from checking a vector which has been checked as a prediction */ | ||
| 151 : | static __inline int | ||
| 152 : | syskin | 1158 | make_mask(const VECTOR * const pmv, const unsigned int i, const unsigned int current) |
| 153 : | edgomez | 1142 | { |
| 154 : | unsigned int mask = 255, j; | ||
| 155 : | for (j = 0; j < i; j++) { | ||
| 156 : | if (pmv[current].x == pmv[j].x) { | ||
| 157 : | if (pmv[current].y == pmv[j].y + iDiamondSize) mask &= ~4; | ||
| 158 : | else if (pmv[current].y == pmv[j].y - iDiamondSize) mask &= ~8; | ||
| 159 : | } else | ||
| 160 : | if (pmv[current].y == pmv[j].y) { | ||
| 161 : | if (pmv[current].x == pmv[j].x + iDiamondSize) mask &= ~1; | ||
| 162 : | else if (pmv[current].x == pmv[j].x - iDiamondSize) mask &= ~2; | ||
| 163 : | } | ||
| 164 : | } | ||
| 165 : | return mask; | ||
| 166 : | } | ||
| 167 : | |||
| 168 : | #endif /* _MOTION_INLINES_ */ |
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