--- mbprediction.h 2002/04/28 23:36:28 1.5 +++ mbprediction.h 2003/09/10 22:19:00 1.21.2.3 @@ -1,34 +1,28 @@ -/************************************************************************** +/***************************************************************************** * * XVID MPEG-4 VIDEO CODEC - * - MB prediction header file - + * - Prediction header - * - * This program is an implementation of a part of one or more MPEG-4 - * Video tools as specified in ISO/IEC 14496-2 standard. Those intending - * to use this software module in hardware or software products are - * advised that its use may infringe existing patents or copyrights, and - * any such use would be at such party's own risk. The original - * developer of this software module and his/her company, and subsequent - * editors and their companies, will have no liability for use of this - * software or modifications or derivatives thereof. + * Copyright(C) 2002-2003 xvid team * - * This program is free software; you can redistribute it and/or modify + * This program is free software ; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the xvid_free Software Foundation; either version 2 of the License, or + * the Free Software Foundation ; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of + * but WITHOUT ANY WARRANTY ; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the xvid_free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * along with this program ; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * - * $Id: mbprediction.h,v 1.5 2002/04/28 23:36:28 edgomez Exp $ + * $Id: mbprediction.h,v 1.21.2.3 2003/09/10 22:19:00 edgomez Exp $ * - *************************************************************************/ + ****************************************************************************/ + #ifndef _MBPREDICTION_H_ #define _MBPREDICTION_H_ @@ -45,281 +39,43 @@ #define MVequal(A,B) ( ((A).x)==((B).x) && ((A).y)==((B).y) ) -void MBPrediction( - FRAMEINFO *frame, /* <-- The parameter for ACDC and MV prediction */ - uint32_t x_pos, /* <-- The x position of the MB to be searched */ - uint32_t y_pos, /* <-- The y position of the MB to be searched */ - uint32_t x_dim, /* <-- Number of macroblocks in a row */ - int16_t *qcoeff); /* <-> The quantized DCT coefficients */ - -void add_acdc(MACROBLOCK *pMB, - uint32_t block, - int16_t dct_codes[64], - uint32_t iDcScaler, - int16_t predictors[8]); - - -void predict_acdc(MACROBLOCK *pMBs, - uint32_t x, - uint32_t y, - uint32_t mb_width, - uint32_t block, - int16_t qcoeff[64], - uint32_t current_quant, - int32_t iDcScaler, - int16_t predictors[8]); - -/* get_pmvdata returns the median predictor and nothing else */ - -static __inline VECTOR get_pmv(const MACROBLOCK * const pMBs, - const uint32_t x, - const uint32_t y, - const uint32_t x_dim, - const uint32_t block) -{ - - int xin1, xin2, xin3; - int yin1, yin2, yin3; - int vec1, vec2, vec3; - VECTOR lneigh,tneigh,trneigh; /* left neighbour, top neighbour, topright neighbour */ - VECTOR median; - - static VECTOR zeroMV = {0,0}; - uint32_t index = x + y * x_dim; - - /* first row (special case) */ - if (y == 0 && (block == 0 || block == 1)) - { - if ((x == 0) && (block == 0)) // first column, first block - { - return zeroMV; - } - if (block == 1) // second block; has only a left neighbour - { - return pMBs[index].mvs[0]; - } - else /* block==0, but x!=0, so again, there is a left neighbour*/ - { - return pMBs[index-1].mvs[1]; - } - } - - /* - * MODE_INTER, vm18 page 48 - * MODE_INTER4V vm18 page 51 - * - * (x,y-1) (x+1,y-1) - * [ | ] [ | ] - * [ 2 | 3 ] [ 2 | ] - * - * (x-1,y) (x,y) (x+1,y) - * [ | 1 ] [ 0 | 1 ] [ 0 | ] - * [ | 3 ] [ 2 | 3 ] [ | ] - */ - - switch (block) - { - case 0: - xin1 = x - 1; yin1 = y; vec1 = 1; /* left */ - xin2 = x; yin2 = y - 1; vec2 = 2; /* top */ - xin3 = x + 1; yin3 = y - 1; vec3 = 2; /* top right */ - break; - case 1: - xin1 = x; yin1 = y; vec1 = 0; - xin2 = x; yin2 = y - 1; vec2 = 3; - xin3 = x + 1; yin3 = y - 1; vec3 = 2; - break; - case 2: - xin1 = x - 1; yin1 = y; vec1 = 3; - xin2 = x; yin2 = y; vec2 = 0; - xin3 = x; yin3 = y; vec3 = 1; - break; - default: - xin1 = x; yin1 = y; vec1 = 2; - xin2 = x; yin2 = y; vec2 = 0; - xin3 = x; yin3 = y; vec3 = 1; - } - - - if (xin1 < 0 || /* yin1 < 0 || */ xin1 >= (int32_t)x_dim) - { - lneigh = zeroMV; - } - else - { - lneigh = pMBs[xin1 + yin1 * x_dim].mvs[vec1]; - } - - if (xin2 < 0 || /* yin2 < 0 || */ xin2 >= (int32_t)x_dim) - { - tneigh = zeroMV; - } - else - { - tneigh = pMBs[xin2 + yin2 * x_dim].mvs[vec2]; - } - - if (xin3 < 0 || /* yin3 < 0 || */ xin3 >= (int32_t)x_dim) - { - trneigh = zeroMV; - } - else - { - trneigh = pMBs[xin3 + yin3 * x_dim].mvs[vec3]; - } - - /* median,minimum */ - - median.x = MIN(MAX(lneigh.x, tneigh.x), MIN(MAX(tneigh.x, trneigh.x), MAX(lneigh.x, trneigh.x))); - median.y = MIN(MAX(lneigh.y, tneigh.y), MIN(MAX(tneigh.y, trneigh.y), MAX(lneigh.y, trneigh.y))); - return median; -} - - -/* This is somehow a copy of get_pmv, but returning all MVs and Minimum SAD - instead of only Median MV */ - -static __inline int get_pmvdata(const MACROBLOCK * const pMBs, - const uint32_t x, const uint32_t y, - const uint32_t x_dim, - const uint32_t block, - VECTOR * const pmv, - int32_t * const psad) -{ - - /* - * pmv are filled with: - * [0]: Median (or whatever is correct in a special case) - * [1]: left neighbour - * [2]: top neighbour - * [3]: topright neighbour - * psad are filled with: - * [0]: minimum of [1] to [3] - * [1]: left neighbour's SAD (NB:[1] to [3] are actually not needed) - * [2]: top neighbour's SAD - * [3]: topright neighbour's SAD - */ - - int xin1, xin2, xin3; - int yin1, yin2, yin3; - int vec1, vec2, vec3; - - static VECTOR zeroMV; - uint32_t index = x + y * x_dim; - zeroMV.x = zeroMV.y = 0; - - // first row (special case) - if (y == 0 && (block == 0 || block == 1)) - { - if ((x == 0) && (block == 0)) // first column, first block - { - pmv[0] = pmv[1] = pmv[2] = pmv[3] = zeroMV; - psad[0] = psad[1] = psad[2] = psad[3] = MV_MAX_ERROR; - return 0; - } - if (block == 1) // second block; has only a left neighbour - { - pmv[0] = pmv[1] = pMBs[index].mvs[0]; - pmv[2] = pmv[3] = zeroMV; - psad[0] = psad[1] = pMBs[index].sad8[0]; - psad[2] = psad[3] = MV_MAX_ERROR; - return 0; - } - else /* block==0, but x!=0, so again, there is a left neighbour*/ - { - pmv[0] = pmv[1] = pMBs[index-1].mvs[1]; - pmv[2] = pmv[3] = zeroMV; - psad[0] = psad[1] = pMBs[index-1].sad8[1]; - psad[2] = psad[3] = MV_MAX_ERROR; - return 0; - } - } - - /* - * MODE_INTER, vm18 page 48 - * MODE_INTER4V vm18 page 51 - * - * (x,y-1) (x+1,y-1) - * [ | ] [ | ] - * [ 2 | 3 ] [ 2 | ] - * - * (x-1,y) (x,y) (x+1,y) - * [ | 1 ] [ 0 | 1 ] [ 0 | ] - * [ | 3 ] [ 2 | 3 ] [ | ] - */ - - switch (block) - { - case 0: - xin1 = x - 1; yin1 = y; vec1 = 1; /* left */ - xin2 = x; yin2 = y - 1; vec2 = 2; /* top */ - xin3 = x + 1; yin3 = y - 1; vec3 = 2; /* top right */ - break; - case 1: - xin1 = x; yin1 = y; vec1 = 0; - xin2 = x; yin2 = y - 1; vec2 = 3; - xin3 = x + 1; yin3 = y - 1; vec3 = 2; - break; - case 2: - xin1 = x - 1; yin1 = y; vec1 = 3; - xin2 = x; yin2 = y; vec2 = 0; - xin3 = x; yin3 = y; vec3 = 1; - break; - default: - xin1 = x; yin1 = y; vec1 = 2; - xin2 = x; yin2 = y; vec2 = 0; - xin3 = x; yin3 = y; vec3 = 1; - } - - - if (xin1 < 0 || /* yin1 < 0 || */ xin1 >= (int32_t)x_dim) - { - pmv[1] = zeroMV; - psad[1] = MV_MAX_ERROR; - } - else - { - pmv[1] = pMBs[xin1 + yin1 * x_dim].mvs[vec1]; - psad[1] = pMBs[xin1 + yin1 * x_dim].sad8[vec1]; - } - - if (xin2 < 0 || /* yin2 < 0 || */ xin2 >= (int32_t)x_dim) - { - pmv[2] = zeroMV; - psad[2] = MV_MAX_ERROR; - } - else - { - pmv[2] = pMBs[xin2 + yin2 * x_dim].mvs[vec2]; - psad[2] = pMBs[xin2 + yin2 * x_dim].sad8[vec2]; - } - - if (xin3 < 0 || /* yin3 < 0 || */ xin3 >= (int32_t)x_dim) - { - pmv[3] = zeroMV; - psad[3] = MV_MAX_ERROR; - } - else - { - pmv[3] = pMBs[xin3 + yin3 * x_dim].mvs[vec3]; - psad[3] = pMBs[xin2 + yin2 * x_dim].sad8[vec3]; - } - - if ( (MVequal(pmv[1],pmv[2])) && (MVequal(pmv[1],pmv[3])) ) - { pmv[0]=pmv[1]; - psad[0]=psad[1]; - return 1; - } - - /* median,minimum */ - - 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))); - 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))); - psad[0]=MIN(MIN(psad[1],psad[2]),psad[3]); - - return 0; -} - - +void MBPrediction(FRAMEINFO * frame, /* <-- The parameter for ACDC and MV prediction */ + uint32_t x_pos, /* <-- The x position of the MB to be searched */ + uint32_t y_pos, /* <-- The y position of the MB to be searched */ + uint32_t x_dim, /* <-- Number of macroblocks in a row */ + int16_t * qcoeff); /* <-> The quantized DCT coefficients */ + +void add_acdc(MACROBLOCK * pMB, + uint32_t block, + int16_t dct_codes[64], + uint32_t iDcScaler, + int16_t predictors[8]); + +void predict_acdc(MACROBLOCK * pMBs, + uint32_t x, + uint32_t y, + uint32_t mb_width, + uint32_t block, + int16_t qcoeff[64], + uint32_t current_quant, + int32_t iDcScaler, + int16_t predictors[8], + const int bound); + +VECTOR +get_pmv2(const MACROBLOCK * const mbs, + const int mb_width, + const int bound, + const int x, + const int y, + const int block); + +VECTOR +get_qpmv2(const MACROBLOCK * const mbs, + const int mb_width, + const int bound, + const int x, + const int y, + const int block); -#endif /* _MBPREDICTION_H_ */ +#endif /* _MBPREDICTION_H_ */