598 lines
22 KiB
C
598 lines
22 KiB
C
/*
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* idct_mmx.c
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* Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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*
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* mpeg2dec 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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* mpeg2dec 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 mpeg2dec; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "common.h"
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#include "../dsputil.h"
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#include "mmx.h"
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#define ATTR_ALIGN(align) __attribute__ ((__aligned__ (align)))
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#define ROW_SHIFT 11
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#define COL_SHIFT 6
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#define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
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#define rounder(bias) {round (bias), round (bias)}
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#if 0
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/* C row IDCT - its just here to document the MMXEXT and MMX versions */
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static inline void idct_row (int16_t * row, int offset,
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int16_t * table, int32_t * rounder)
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{
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int C1, C2, C3, C4, C5, C6, C7;
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int a0, a1, a2, a3, b0, b1, b2, b3;
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row += offset;
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C1 = table[1];
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C2 = table[2];
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C3 = table[3];
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C4 = table[4];
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C5 = table[5];
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C6 = table[6];
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C7 = table[7];
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a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + *rounder;
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a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + *rounder;
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a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + *rounder;
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a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + *rounder;
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b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7];
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b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7];
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b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7];
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b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7];
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row[0] = (a0 + b0) >> ROW_SHIFT;
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row[1] = (a1 + b1) >> ROW_SHIFT;
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row[2] = (a2 + b2) >> ROW_SHIFT;
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row[3] = (a3 + b3) >> ROW_SHIFT;
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row[4] = (a3 - b3) >> ROW_SHIFT;
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row[5] = (a2 - b2) >> ROW_SHIFT;
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row[6] = (a1 - b1) >> ROW_SHIFT;
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row[7] = (a0 - b0) >> ROW_SHIFT;
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}
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#endif
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/* MMXEXT row IDCT */
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#define mmxext_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
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c4, c6, c4, c6, \
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c1, c3, -c1, -c5, \
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c5, c7, c3, -c7, \
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c4, -c6, c4, -c6, \
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-c4, c2, c4, -c2, \
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c5, -c1, c3, -c1, \
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c7, c3, c7, -c5 }
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static inline void mmxext_row_head (int16_t * row, int offset, const int16_t * table)
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{
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movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
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movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
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movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
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movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
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movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
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movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
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pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
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pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
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}
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static inline void mmxext_row (const int16_t * table, const int32_t * rounder)
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{
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movq_m2r (*(table+8), mm1); // mm1 = -C5 -C1 C3 C1
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pmaddwd_r2r (mm2, mm4); // mm4 = C4*x0+C6*x2 C4*x4+C6*x6
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pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x4-C6*x6 C4*x0-C6*x2
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pshufw_r2r (mm6, mm6, 0x4e); // mm6 = x3 x1 x7 x5
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movq_m2r (*(table+12), mm7); // mm7 = -C7 C3 C7 C5
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pmaddwd_r2r (mm5, mm1); // mm1 = -C1*x5-C5*x7 C1*x1+C3*x3
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paddd_m2r (*rounder, mm3); // mm3 += rounder
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pmaddwd_r2r (mm6, mm7); // mm7 = C3*x1-C7*x3 C5*x5+C7*x7
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pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x0-C2*x2 -C4*x4+C2*x6
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paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
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pmaddwd_m2r (*(table+24), mm5); // mm5 = C3*x5-C1*x7 C5*x1-C1*x3
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movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
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pmaddwd_m2r (*(table+28), mm6); // mm6 = C7*x1-C5*x3 C7*x5+C3*x7
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paddd_r2r (mm7, mm1); // mm1 = b1 b0
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paddd_m2r (*rounder, mm0); // mm0 += rounder
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psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
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psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
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paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
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paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
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psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
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paddd_r2r (mm6, mm5); // mm5 = b3 b2
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movq_r2r (mm0, mm4); // mm4 = a3 a2 + rounder
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paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
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psubd_r2r (mm5, mm4); // mm4 = a3-b3 a2-b2 + rounder
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}
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static inline void mmxext_row_tail (int16_t * row, int store)
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{
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psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
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psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
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packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
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packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
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movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
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pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
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/* slot */
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movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
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}
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static inline void mmxext_row_mid (int16_t * row, int store,
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int offset, const int16_t * table)
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{
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movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
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psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
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movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
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psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
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packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
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movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
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packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
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movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
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movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
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pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
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movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
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movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
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pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
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movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
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pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
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}
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/* MMX row IDCT */
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#define mmx_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
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c4, c6, -c4, -c2, \
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c1, c3, c3, -c7, \
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c5, c7, -c1, -c5, \
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c4, -c6, c4, -c2, \
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-c4, c2, c4, -c6, \
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c5, -c1, c7, -c5, \
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c7, c3, c3, -c1 }
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static inline void mmx_row_head (int16_t * row, int offset, const int16_t * table)
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{
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movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
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movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
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movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
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movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
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movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
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punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
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movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
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pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
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movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
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punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
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}
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static inline void mmx_row (const int16_t * table, const int32_t * rounder)
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{
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pmaddwd_r2r (mm2, mm4); // mm4 = -C4*x4-C2*x6 C4*x4+C6*x6
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punpckldq_r2r (mm5, mm5); // mm5 = x3 x1 x3 x1
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pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x0-C2*x2 C4*x0-C6*x2
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punpckhdq_r2r (mm6, mm6); // mm6 = x7 x5 x7 x5
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movq_m2r (*(table+12), mm7); // mm7 = -C5 -C1 C7 C5
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pmaddwd_r2r (mm5, mm1); // mm1 = C3*x1-C7*x3 C1*x1+C3*x3
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paddd_m2r (*rounder, mm3); // mm3 += rounder
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pmaddwd_r2r (mm6, mm7); // mm7 = -C1*x5-C5*x7 C5*x5+C7*x7
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pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x4-C6*x6 -C4*x4+C2*x6
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paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
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pmaddwd_m2r (*(table+24), mm5); // mm5 = C7*x1-C5*x3 C5*x1-C1*x3
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movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
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pmaddwd_m2r (*(table+28), mm6); // mm6 = C3*x5-C1*x7 C7*x5+C3*x7
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paddd_r2r (mm7, mm1); // mm1 = b1 b0
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paddd_m2r (*rounder, mm0); // mm0 += rounder
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psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
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psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
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paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
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paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
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psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
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paddd_r2r (mm6, mm5); // mm5 = b3 b2
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movq_r2r (mm0, mm7); // mm7 = a3 a2 + rounder
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paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
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psubd_r2r (mm5, mm7); // mm7 = a3-b3 a2-b2 + rounder
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}
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static inline void mmx_row_tail (int16_t * row, int store)
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{
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psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
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psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
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packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
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packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
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movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
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movq_r2r (mm7, mm4); // mm4 = y6 y7 y4 y5
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pslld_i2r (16, mm7); // mm7 = y7 0 y5 0
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psrld_i2r (16, mm4); // mm4 = 0 y6 0 y4
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por_r2r (mm4, mm7); // mm7 = y7 y6 y5 y4
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/* slot */
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movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
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}
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static inline void mmx_row_mid (int16_t * row, int store,
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int offset, const int16_t * table)
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{
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movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
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psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
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movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
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psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
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packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
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movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
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packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
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movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
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movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
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movq_r2r (mm7, mm1); // mm1 = y6 y7 y4 y5
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punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
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psrld_i2r (16, mm7); // mm7 = 0 y6 0 y4
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movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
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pslld_i2r (16, mm1); // mm1 = y7 0 y5 0
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movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
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por_r2r (mm1, mm7); // mm7 = y7 y6 y5 y4
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movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
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punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
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movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
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pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
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}
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#if 0
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// C column IDCT - its just here to document the MMXEXT and MMX versions
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static inline void idct_col (int16_t * col, int offset)
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{
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/* multiplication - as implemented on mmx */
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#define F(c,x) (((c) * (x)) >> 16)
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/* saturation - it helps us handle torture test cases */
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#define S(x) (((x)>32767) ? 32767 : ((x)<-32768) ? -32768 : (x))
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int16_t x0, x1, x2, x3, x4, x5, x6, x7;
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int16_t y0, y1, y2, y3, y4, y5, y6, y7;
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int16_t a0, a1, a2, a3, b0, b1, b2, b3;
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int16_t u04, v04, u26, v26, u17, v17, u35, v35, u12, v12;
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col += offset;
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x0 = col[0*8];
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x1 = col[1*8];
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x2 = col[2*8];
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x3 = col[3*8];
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x4 = col[4*8];
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x5 = col[5*8];
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x6 = col[6*8];
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x7 = col[7*8];
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u04 = S (x0 + x4);
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v04 = S (x0 - x4);
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u26 = S (F (T2, x6) + x2);
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v26 = S (F (T2, x2) - x6);
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a0 = S (u04 + u26);
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a1 = S (v04 + v26);
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a2 = S (v04 - v26);
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a3 = S (u04 - u26);
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u17 = S (F (T1, x7) + x1);
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v17 = S (F (T1, x1) - x7);
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u35 = S (F (T3, x5) + x3);
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v35 = S (F (T3, x3) - x5);
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b0 = S (u17 + u35);
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b3 = S (v17 - v35);
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u12 = S (u17 - u35);
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v12 = S (v17 + v35);
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u12 = S (2 * F (C4, u12));
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v12 = S (2 * F (C4, v12));
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b1 = S (u12 + v12);
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b2 = S (u12 - v12);
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y0 = S (a0 + b0) >> COL_SHIFT;
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y1 = S (a1 + b1) >> COL_SHIFT;
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y2 = S (a2 + b2) >> COL_SHIFT;
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y3 = S (a3 + b3) >> COL_SHIFT;
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y4 = S (a3 - b3) >> COL_SHIFT;
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y5 = S (a2 - b2) >> COL_SHIFT;
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y6 = S (a1 - b1) >> COL_SHIFT;
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y7 = S (a0 - b0) >> COL_SHIFT;
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col[0*8] = y0;
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col[1*8] = y1;
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col[2*8] = y2;
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col[3*8] = y3;
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col[4*8] = y4;
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col[5*8] = y5;
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col[6*8] = y6;
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col[7*8] = y7;
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}
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#endif
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|
|
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// MMX column IDCT
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static inline void idct_col (int16_t * col, int offset)
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|
{
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#define T1 13036
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#define T2 27146
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#define T3 43790
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#define C4 23170
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static const short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
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static const short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
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static const short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
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static const short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
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|
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/* column code adapted from peter gubanov */
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/* http://www.elecard.com/peter/idct.shtml */
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movq_m2r (*_T1, mm0); // mm0 = T1
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movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
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movq_r2r (mm0, mm2); // mm2 = T1
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movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
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pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
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movq_m2r (*_T3, mm5); // mm5 = T3
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pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
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movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
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movq_r2r (mm5, mm7); // mm7 = T3-1
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movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
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psubsw_r2r (mm4, mm0); // mm0 = v17
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movq_m2r (*_T2, mm4); // mm4 = T2
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pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
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paddsw_r2r (mm2, mm1); // mm1 = u17
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pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
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/* slot */
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movq_r2r (mm4, mm2); // mm2 = T2
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paddsw_r2r (mm3, mm5); // mm5 = T3*x3
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pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
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paddsw_r2r (mm6, mm7); // mm7 = T3*x5
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psubsw_r2r (mm6, mm5); // mm5 = v35
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paddsw_r2r (mm3, mm7); // mm7 = u35
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|
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movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
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movq_r2r (mm0, mm6); // mm6 = v17
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pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
|
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psubsw_r2r (mm5, mm0); // mm0 = b3
|
|
|
|
psubsw_r2r (mm3, mm4); // mm4 = v26
|
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paddsw_r2r (mm6, mm5); // mm5 = v12
|
|
|
|
movq_r2m (mm0, *(col+offset+3*8)); // save b3 in scratch0
|
|
movq_r2r (mm1, mm6); // mm6 = u17
|
|
|
|
paddsw_m2r (*(col+offset+2*8), mm2);// mm2 = u26
|
|
paddsw_r2r (mm7, mm6); // mm6 = b0
|
|
|
|
psubsw_r2r (mm7, mm1); // mm1 = u12
|
|
movq_r2r (mm1, mm7); // mm7 = u12
|
|
|
|
movq_m2r (*(col+offset+0*8), mm3); // mm3 = x0
|
|
paddsw_r2r (mm5, mm1); // mm1 = u12+v12
|
|
|
|
movq_m2r (*_C4, mm0); // mm0 = C4/2
|
|
psubsw_r2r (mm5, mm7); // mm7 = u12-v12
|
|
|
|
movq_r2m (mm6, *(col+offset+5*8)); // save b0 in scratch1
|
|
pmulhw_r2r (mm0, mm1); // mm1 = b1/2
|
|
|
|
movq_r2r (mm4, mm6); // mm6 = v26
|
|
pmulhw_r2r (mm0, mm7); // mm7 = b2/2
|
|
|
|
movq_m2r (*(col+offset+4*8), mm5); // mm5 = x4
|
|
movq_r2r (mm3, mm0); // mm0 = x0
|
|
|
|
psubsw_r2r (mm5, mm3); // mm3 = v04
|
|
paddsw_r2r (mm5, mm0); // mm0 = u04
|
|
|
|
paddsw_r2r (mm3, mm4); // mm4 = a1
|
|
movq_r2r (mm0, mm5); // mm5 = u04
|
|
|
|
psubsw_r2r (mm6, mm3); // mm3 = a2
|
|
paddsw_r2r (mm2, mm5); // mm5 = a0
|
|
|
|
paddsw_r2r (mm1, mm1); // mm1 = b1
|
|
psubsw_r2r (mm2, mm0); // mm0 = a3
|
|
|
|
paddsw_r2r (mm7, mm7); // mm7 = b2
|
|
movq_r2r (mm3, mm2); // mm2 = a2
|
|
|
|
movq_r2r (mm4, mm6); // mm6 = a1
|
|
paddsw_r2r (mm7, mm3); // mm3 = a2+b2
|
|
|
|
psraw_i2r (COL_SHIFT, mm3); // mm3 = y2
|
|
paddsw_r2r (mm1, mm4); // mm4 = a1+b1
|
|
|
|
psraw_i2r (COL_SHIFT, mm4); // mm4 = y1
|
|
psubsw_r2r (mm1, mm6); // mm6 = a1-b1
|
|
|
|
movq_m2r (*(col+offset+5*8), mm1); // mm1 = b0
|
|
psubsw_r2r (mm7, mm2); // mm2 = a2-b2
|
|
|
|
psraw_i2r (COL_SHIFT, mm6); // mm6 = y6
|
|
movq_r2r (mm5, mm7); // mm7 = a0
|
|
|
|
movq_r2m (mm4, *(col+offset+1*8)); // save y1
|
|
psraw_i2r (COL_SHIFT, mm2); // mm2 = y5
|
|
|
|
movq_r2m (mm3, *(col+offset+2*8)); // save y2
|
|
paddsw_r2r (mm1, mm5); // mm5 = a0+b0
|
|
|
|
movq_m2r (*(col+offset+3*8), mm4); // mm4 = b3
|
|
psubsw_r2r (mm1, mm7); // mm7 = a0-b0
|
|
|
|
psraw_i2r (COL_SHIFT, mm5); // mm5 = y0
|
|
movq_r2r (mm0, mm3); // mm3 = a3
|
|
|
|
movq_r2m (mm2, *(col+offset+5*8)); // save y5
|
|
psubsw_r2r (mm4, mm3); // mm3 = a3-b3
|
|
|
|
psraw_i2r (COL_SHIFT, mm7); // mm7 = y7
|
|
paddsw_r2r (mm0, mm4); // mm4 = a3+b3
|
|
|
|
movq_r2m (mm5, *(col+offset+0*8)); // save y0
|
|
psraw_i2r (COL_SHIFT, mm3); // mm3 = y4
|
|
|
|
movq_r2m (mm6, *(col+offset+6*8)); // save y6
|
|
psraw_i2r (COL_SHIFT, mm4); // mm4 = y3
|
|
|
|
movq_r2m (mm7, *(col+offset+7*8)); // save y7
|
|
|
|
movq_r2m (mm3, *(col+offset+4*8)); // save y4
|
|
|
|
movq_r2m (mm4, *(col+offset+3*8)); // save y3
|
|
|
|
#undef T1
|
|
#undef T2
|
|
#undef T3
|
|
#undef C4
|
|
}
|
|
|
|
static const int32_t rounder0[] ATTR_ALIGN(8) =
|
|
rounder ((1 << (COL_SHIFT - 1)) - 0.5);
|
|
static const int32_t rounder4[] ATTR_ALIGN(8) = rounder (0);
|
|
static const int32_t rounder1[] ATTR_ALIGN(8) =
|
|
rounder (1.25683487303); /* C1*(C1/C4+C1+C7)/2 */
|
|
static const int32_t rounder7[] ATTR_ALIGN(8) =
|
|
rounder (-0.25); /* C1*(C7/C4+C7-C1)/2 */
|
|
static const int32_t rounder2[] ATTR_ALIGN(8) =
|
|
rounder (0.60355339059); /* C2 * (C6+C2)/2 */
|
|
static const int32_t rounder6[] ATTR_ALIGN(8) =
|
|
rounder (-0.25); /* C2 * (C6-C2)/2 */
|
|
static const int32_t rounder3[] ATTR_ALIGN(8) =
|
|
rounder (0.087788325588); /* C3*(-C3/C4+C3+C5)/2 */
|
|
static const int32_t rounder5[] ATTR_ALIGN(8) =
|
|
rounder (-0.441341716183); /* C3*(-C5/C4+C5-C3)/2 */
|
|
|
|
#undef COL_SHIFT
|
|
#undef ROW_SHIFT
|
|
|
|
#define declare_idct(idct,table,idct_row_head,idct_row,idct_row_tail,idct_row_mid) \
|
|
void idct (int16_t * block) \
|
|
{ \
|
|
static const int16_t table04[] ATTR_ALIGN(16) = \
|
|
table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \
|
|
static const int16_t table17[] ATTR_ALIGN(16) = \
|
|
table (31521, 29692, 26722, 22725, 17855, 12299, 6270); \
|
|
static const int16_t table26[] ATTR_ALIGN(16) = \
|
|
table (29692, 27969, 25172, 21407, 16819, 11585, 5906); \
|
|
static const int16_t table35[] ATTR_ALIGN(16) = \
|
|
table (26722, 25172, 22654, 19266, 15137, 10426, 5315); \
|
|
\
|
|
idct_row_head (block, 0*8, table04); \
|
|
idct_row (table04, rounder0); \
|
|
idct_row_mid (block, 0*8, 4*8, table04); \
|
|
idct_row (table04, rounder4); \
|
|
idct_row_mid (block, 4*8, 1*8, table17); \
|
|
idct_row (table17, rounder1); \
|
|
idct_row_mid (block, 1*8, 7*8, table17); \
|
|
idct_row (table17, rounder7); \
|
|
idct_row_mid (block, 7*8, 2*8, table26); \
|
|
idct_row (table26, rounder2); \
|
|
idct_row_mid (block, 2*8, 6*8, table26); \
|
|
idct_row (table26, rounder6); \
|
|
idct_row_mid (block, 6*8, 3*8, table35); \
|
|
idct_row (table35, rounder3); \
|
|
idct_row_mid (block, 3*8, 5*8, table35); \
|
|
idct_row (table35, rounder5); \
|
|
idct_row_tail (block, 5*8); \
|
|
\
|
|
idct_col (block, 0); \
|
|
idct_col (block, 4); \
|
|
}
|
|
|
|
void ff_mmx_idct(DCTELEM *block);
|
|
void ff_mmxext_idct(DCTELEM *block);
|
|
|
|
declare_idct (ff_mmxext_idct, mmxext_table,
|
|
mmxext_row_head, mmxext_row, mmxext_row_tail, mmxext_row_mid)
|
|
|
|
declare_idct (ff_mmx_idct, mmx_table,
|
|
mmx_row_head, mmx_row, mmx_row_tail, mmx_row_mid)
|
|
|