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/************************************************************************** |
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* |
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* XVID MPEG-4 VIDEO CODEC |
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* GMC interpolation module |
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* |
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* 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 |
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* the Free Software Foundation; either version 2 of the License, or |
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* (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, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* 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 |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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*************************************************************************/ |
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#include "../portab.h" |
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#include "../global.h" |
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/* This is borrowed from decoder.c */ |
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static __inline int gmc_sanitize(int value, int quarterpel, int fcode) |
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{ |
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int length = 1 << (fcode+4); |
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// if (quarterpel) value *= 2; |
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if (value < -length) |
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return -length; |
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else if (value >= length) |
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return length-1; |
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else return value; |
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} |
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/* And this is borrowed from bitstream.c until we find a common solution */ |
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static uint32_t __inline |
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log2bin(uint32_t value) |
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{ |
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/* Changed by Chenm001 */ |
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#if !defined(_MSC_VER) |
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int n = 0; |
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while (value) { |
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value >>= 1; |
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n++; |
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} |
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return n; |
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#else |
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__asm { |
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bsr eax, value |
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inc eax |
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} |
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#endif |
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} |
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/* 16*sizeof(int) -> 1 or 2 cachelines */ |
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/* table lookup might be faster! (still to be benchmarked) */ |
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/* |
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static int log2bin_table[16] = |
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{ 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4}; |
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*/ |
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/* 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ |
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#define RDIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) |
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#define RSHIFT(a,b) ( (a)>0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b)) |
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#define MLT(i) (((16-(i))<<16) + (i)) |
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static const uint32_t MTab[16] = { |
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MLT( 0), MLT( 1), MLT( 2), MLT( 3), MLT( 4), MLT( 5), MLT( 6), MLT( 7), |
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MLT( 8), MLT( 9), MLT(10), MLT(11), MLT(12), MLT(13), MLT(14), MLT(15) |
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}; |
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#undef MLT |
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////////////////////////////////////////////////////////// |
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// Pts = 2 or 3 |
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// Warning! *src is the global frame pointer (that is: adress |
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// of pixel 0,0), not the macroblock one. |
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// Conversely, *dst is the macroblock top-left adress. |
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void Predict_16x16_C(const NEW_GMC_DATA * const This, |
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uint8_t *dst, const uint8_t *src, |
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int dststride, int srcstride, int x, int y, int rounding); |
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void Predict_8x8_C(const NEW_GMC_DATA * const This, |
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uint8_t *uDst, const uint8_t *uSrc, |
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uint8_t *vDst, const uint8_t *vSrc, |
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int dststride, int srcstride, int x, int y, int rounding); |
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void get_average_mv_C(const NEW_GMC_DATA * const Dsp, VECTOR * const mv, |
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int x, int y, int qpel); |
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/* ************************************************************ */ |
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// simplified version for 1 warp point |
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void Predict_1pt_16x16_C(const NEW_GMC_DATA * const This, |
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uint8_t *Dst, const uint8_t *Src, |
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int dststride, int srcstride, int x, int y, int rounding); |
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void Predict_1pt_8x8_C(const NEW_GMC_DATA * const This, |
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uint8_t *uDst, const uint8_t *uSrc, |
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uint8_t *vDst, const uint8_t *vSrc, |
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int dststride, int srcstride, int x, int y, int rounding); |
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void get_average_mv_1pt_C(const NEW_GMC_DATA * const Dsp, VECTOR * const mv, |
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int x, int y, int qpel); |
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/* ************************************************************* */ |
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// Warning! It's Accuracy being passed, not 'resolution'! |
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void generate_GMCparameters(int nb_pts, const int accuracy, |
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const WARPPOINTS *const pts, |
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const int width, const int height, |
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NEW_GMC_DATA *const gmc); |
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/* ******************************************************************* */ |
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void |
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generate_GMCimage( const NEW_GMC_DATA *const gmc_data, // [input] precalculated data |
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const IMAGE *const pRef, // [input] |
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const int mb_width, |
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const int mb_height, |
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const int stride, |
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const int stride2, |
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const int fcode, // [input] some parameters... |
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const int32_t quarterpel, // [input] for rounding avgMV |
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const int reduced_resolution, // [input] ignored |
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const int32_t rounding, // [input] for rounding image data |
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MACROBLOCK *const pMBs, // [output] average motion vectors |
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IMAGE *const pGMC); // [output] full warped image |
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