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/************************************************************************** |
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* |
* |
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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - MB prediction header file - |
* - Prediction header - |
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* |
* |
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* This program is an implementation of a part of one or more MPEG-4 |
* Copyright(C) 2002-2003 xvid team <xvid-devel@xvid.org> |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* to use this software module in hardware or software products are |
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* advised that its use may infringe existing patents or copyrights, and |
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* any such use would be at such party's own risk. The original |
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* developer of this software module and his/her company, and subsequent |
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* editors and their companies, will have no liability for use of this |
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* software or modifications or derivatives thereof. |
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* |
* |
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* This program is free software; you can redistribute it and/or modify |
* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
* it under the terms of the GNU General Public License as published by |
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* the xvid_free Software Foundation; either version 2 of the License, or |
* the Free Software Foundation ; either version 2 of the License, or |
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* (at your option) any later version. |
* (at your option) any later version. |
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* |
* |
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* This program is distributed in the hope that it will be useful, |
* This program is distributed in the hope that it will be useful, |
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* GNU General Public License for more details. |
* GNU General Public License for more details. |
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* |
* |
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* You should have received a copy of the GNU General Public License |
* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the xvid_free Software |
* along with this program ; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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* $Id: mbprediction.h,v 1.5 2002-04-28 23:36:28 edgomez Exp $ |
* $Id: mbprediction.h,v 1.22 2004-03-22 22:36:24 edgomez Exp $ |
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* |
* |
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*************************************************************************/ |
****************************************************************************/ |
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#ifndef _MBPREDICTION_H_ |
#ifndef _MBPREDICTION_H_ |
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#define _MBPREDICTION_H_ |
#define _MBPREDICTION_H_ |
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#define MVequal(A,B) ( ((A).x)==((B).x) && ((A).y)==((B).y) ) |
#define MVequal(A,B) ( ((A).x)==((B).x) && ((A).y)==((B).y) ) |
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void MBPrediction( |
void MBPrediction(FRAMEINFO * frame, /* <-- The parameter for ACDC and MV prediction */ |
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FRAMEINFO *frame, /* <-- The parameter for ACDC and MV prediction */ |
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uint32_t x_pos, /* <-- The x position of the MB to be searched */ |
uint32_t x_pos, /* <-- The x position of the MB to be searched */ |
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uint32_t y_pos, /* <-- The y position of the MB to be searched */ |
uint32_t y_pos, /* <-- The y position of the MB to be searched */ |
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uint32_t x_dim, /* <-- Number of macroblocks in a row */ |
uint32_t x_dim, /* <-- Number of macroblocks in a row */ |
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uint32_t iDcScaler, |
uint32_t iDcScaler, |
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int16_t predictors[8]); |
int16_t predictors[8]); |
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void predict_acdc(MACROBLOCK *pMBs, |
void predict_acdc(MACROBLOCK *pMBs, |
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uint32_t x, |
uint32_t x, |
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uint32_t y, |
uint32_t y, |
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int16_t qcoeff[64], |
int16_t qcoeff[64], |
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uint32_t current_quant, |
uint32_t current_quant, |
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int32_t iDcScaler, |
int32_t iDcScaler, |
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int16_t predictors[8]); |
int16_t predictors[8], |
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const int bound); |
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/* get_pmvdata returns the median predictor and nothing else */ |
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static __inline VECTOR get_pmv(const MACROBLOCK * const pMBs, |
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const uint32_t x, |
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const uint32_t y, |
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const uint32_t x_dim, |
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const uint32_t block) |
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{ |
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int xin1, xin2, xin3; |
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int yin1, yin2, yin3; |
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int vec1, vec2, vec3; |
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VECTOR lneigh,tneigh,trneigh; /* left neighbour, top neighbour, topright neighbour */ |
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VECTOR median; |
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static VECTOR zeroMV = {0,0}; |
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uint32_t index = x + y * x_dim; |
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/* first row (special case) */ |
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if (y == 0 && (block == 0 || block == 1)) |
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{ |
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if ((x == 0) && (block == 0)) // first column, first block |
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{ |
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return zeroMV; |
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} |
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if (block == 1) // second block; has only a left neighbour |
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{ |
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return pMBs[index].mvs[0]; |
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} |
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else /* block==0, but x!=0, so again, there is a left neighbour*/ |
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{ |
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return pMBs[index-1].mvs[1]; |
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} |
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} |
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/* |
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* MODE_INTER, vm18 page 48 |
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* MODE_INTER4V vm18 page 51 |
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* |
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* (x,y-1) (x+1,y-1) |
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* [ | ] [ | ] |
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* [ 2 | 3 ] [ 2 | ] |
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* |
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* (x-1,y) (x,y) (x+1,y) |
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* [ | 1 ] [ 0 | 1 ] [ 0 | ] |
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* [ | 3 ] [ 2 | 3 ] [ | ] |
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*/ |
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switch (block) |
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{ |
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case 0: |
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xin1 = x - 1; yin1 = y; vec1 = 1; /* left */ |
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xin2 = x; yin2 = y - 1; vec2 = 2; /* top */ |
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xin3 = x + 1; yin3 = y - 1; vec3 = 2; /* top right */ |
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break; |
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case 1: |
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xin1 = x; yin1 = y; vec1 = 0; |
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xin2 = x; yin2 = y - 1; vec2 = 3; |
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xin3 = x + 1; yin3 = y - 1; vec3 = 2; |
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break; |
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case 2: |
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xin1 = x - 1; yin1 = y; vec1 = 3; |
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xin2 = x; yin2 = y; vec2 = 0; |
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xin3 = x; yin3 = y; vec3 = 1; |
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break; |
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default: |
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xin1 = x; yin1 = y; vec1 = 2; |
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xin2 = x; yin2 = y; vec2 = 0; |
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xin3 = x; yin3 = y; vec3 = 1; |
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} |
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if (xin1 < 0 || /* yin1 < 0 || */ xin1 >= (int32_t)x_dim) |
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{ |
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lneigh = zeroMV; |
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} |
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else |
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{ |
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lneigh = pMBs[xin1 + yin1 * x_dim].mvs[vec1]; |
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} |
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if (xin2 < 0 || /* yin2 < 0 || */ xin2 >= (int32_t)x_dim) |
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{ |
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tneigh = zeroMV; |
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} |
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else |
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{ |
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tneigh = pMBs[xin2 + yin2 * x_dim].mvs[vec2]; |
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} |
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if (xin3 < 0 || /* yin3 < 0 || */ xin3 >= (int32_t)x_dim) |
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{ |
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trneigh = zeroMV; |
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} |
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else |
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{ |
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trneigh = pMBs[xin3 + yin3 * x_dim].mvs[vec3]; |
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} |
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/* median,minimum */ |
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median.x = MIN(MAX(lneigh.x, tneigh.x), MIN(MAX(tneigh.x, trneigh.x), MAX(lneigh.x, trneigh.x))); |
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median.y = MIN(MAX(lneigh.y, tneigh.y), MIN(MAX(tneigh.y, trneigh.y), MAX(lneigh.y, trneigh.y))); |
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return median; |
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} |
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/* This is somehow a copy of get_pmv, but returning all MVs and Minimum SAD |
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instead of only Median MV */ |
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static __inline int get_pmvdata(const MACROBLOCK * const pMBs, |
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const uint32_t x, const uint32_t y, |
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const uint32_t x_dim, |
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const uint32_t block, |
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VECTOR * const pmv, |
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int32_t * const psad) |
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{ |
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/* |
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* pmv are filled with: |
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* [0]: Median (or whatever is correct in a special case) |
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* [1]: left neighbour |
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* [2]: top neighbour |
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* [3]: topright neighbour |
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* psad are filled with: |
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* [0]: minimum of [1] to [3] |
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* [1]: left neighbour's SAD (NB:[1] to [3] are actually not needed) |
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* [2]: top neighbour's SAD |
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* [3]: topright neighbour's SAD |
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*/ |
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int xin1, xin2, xin3; |
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int yin1, yin2, yin3; |
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int vec1, vec2, vec3; |
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static VECTOR zeroMV; |
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uint32_t index = x + y * x_dim; |
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zeroMV.x = zeroMV.y = 0; |
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// first row (special case) |
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if (y == 0 && (block == 0 || block == 1)) |
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{ |
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if ((x == 0) && (block == 0)) // first column, first block |
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{ |
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pmv[0] = pmv[1] = pmv[2] = pmv[3] = zeroMV; |
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psad[0] = psad[1] = psad[2] = psad[3] = MV_MAX_ERROR; |
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return 0; |
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} |
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if (block == 1) // second block; has only a left neighbour |
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{ |
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pmv[0] = pmv[1] = pMBs[index].mvs[0]; |
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pmv[2] = pmv[3] = zeroMV; |
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psad[0] = psad[1] = pMBs[index].sad8[0]; |
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psad[2] = psad[3] = MV_MAX_ERROR; |
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return 0; |
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} |
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else /* block==0, but x!=0, so again, there is a left neighbour*/ |
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{ |
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pmv[0] = pmv[1] = pMBs[index-1].mvs[1]; |
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pmv[2] = pmv[3] = zeroMV; |
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psad[0] = psad[1] = pMBs[index-1].sad8[1]; |
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psad[2] = psad[3] = MV_MAX_ERROR; |
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return 0; |
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} |
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} |
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/* |
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* MODE_INTER, vm18 page 48 |
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* MODE_INTER4V vm18 page 51 |
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* |
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* (x,y-1) (x+1,y-1) |
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* [ | ] [ | ] |
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* [ 2 | 3 ] [ 2 | ] |
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* |
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* (x-1,y) (x,y) (x+1,y) |
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* [ | 1 ] [ 0 | 1 ] [ 0 | ] |
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* [ | 3 ] [ 2 | 3 ] [ | ] |
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*/ |
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switch (block) |
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{ |
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case 0: |
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xin1 = x - 1; yin1 = y; vec1 = 1; /* left */ |
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xin2 = x; yin2 = y - 1; vec2 = 2; /* top */ |
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xin3 = x + 1; yin3 = y - 1; vec3 = 2; /* top right */ |
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break; |
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case 1: |
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xin1 = x; yin1 = y; vec1 = 0; |
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xin2 = x; yin2 = y - 1; vec2 = 3; |
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xin3 = x + 1; yin3 = y - 1; vec3 = 2; |
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break; |
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case 2: |
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xin1 = x - 1; yin1 = y; vec1 = 3; |
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xin2 = x; yin2 = y; vec2 = 0; |
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xin3 = x; yin3 = y; vec3 = 1; |
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break; |
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default: |
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xin1 = x; yin1 = y; vec1 = 2; |
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xin2 = x; yin2 = y; vec2 = 0; |
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xin3 = x; yin3 = y; vec3 = 1; |
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} |
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if (xin1 < 0 || /* yin1 < 0 || */ xin1 >= (int32_t)x_dim) |
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{ |
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pmv[1] = zeroMV; |
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psad[1] = MV_MAX_ERROR; |
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} |
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else |
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{ |
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pmv[1] = pMBs[xin1 + yin1 * x_dim].mvs[vec1]; |
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psad[1] = pMBs[xin1 + yin1 * x_dim].sad8[vec1]; |
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} |
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if (xin2 < 0 || /* yin2 < 0 || */ xin2 >= (int32_t)x_dim) |
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{ |
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pmv[2] = zeroMV; |
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psad[2] = MV_MAX_ERROR; |
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} |
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else |
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{ |
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pmv[2] = pMBs[xin2 + yin2 * x_dim].mvs[vec2]; |
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psad[2] = pMBs[xin2 + yin2 * x_dim].sad8[vec2]; |
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} |
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if (xin3 < 0 || /* yin3 < 0 || */ xin3 >= (int32_t)x_dim) |
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{ |
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pmv[3] = zeroMV; |
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psad[3] = MV_MAX_ERROR; |
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} |
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else |
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{ |
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pmv[3] = pMBs[xin3 + yin3 * x_dim].mvs[vec3]; |
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psad[3] = pMBs[xin2 + yin2 * x_dim].sad8[vec3]; |
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} |
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if ( (MVequal(pmv[1],pmv[2])) && (MVequal(pmv[1],pmv[3])) ) |
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{ pmv[0]=pmv[1]; |
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psad[0]=psad[1]; |
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return 1; |
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} |
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/* median,minimum */ |
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pmv[0].x = MIN(MAX(pmv[1].x, pmv[2].x), MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); |
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pmv[0].y = MIN(MAX(pmv[1].y, pmv[2].y), MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); |
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psad[0]=MIN(MIN(psad[1],psad[2]),psad[3]); |
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return 0; |
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} |
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VECTOR |
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get_pmv2(const MACROBLOCK * const mbs, |
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const int mb_width, |
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const int bound, |
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const int x, |
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const int y, |
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const int block); |
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VECTOR |
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get_qpmv2(const MACROBLOCK * const mbs, |
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const int mb_width, |
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const int bound, |
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const int x, |
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const int y, |
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const int block); |
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#endif /* _MBPREDICTION_H_ */ |
#endif /* _MBPREDICTION_H_ */ |