+++ /dev/null
-/*
- * Note: For libavcodec, this code can also be used under the LGPL license
- */
-/*
- * idct_mmx.c
- * Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
- *
- * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
- *
- * mpeg2dec is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * mpeg2dec is distributed in the hope that it will be useful,
- * 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 Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "../common.h"
-
-#include "mmx.h"
-
-#define ATTR_ALIGN(align) __attribute__ ((__aligned__ (align)))
-
-#define ROW_SHIFT 11
-#define COL_SHIFT 6
-
-#define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
-#define rounder(bias) {round (bias), round (bias)}
-
-#if 0
-/* C row IDCT - its just here to document the MMXEXT and MMX versions */
-static inline void idct_row (int16_t * row, int offset,
- int16_t * table, int32_t * rounder)
-{
- int C1, C2, C3, C4, C5, C6, C7;
- int a0, a1, a2, a3, b0, b1, b2, b3;
-
- row += offset;
-
- C1 = table[1];
- C2 = table[2];
- C3 = table[3];
- C4 = table[4];
- C5 = table[5];
- C6 = table[6];
- C7 = table[7];
-
- a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + *rounder;
- a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + *rounder;
- a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + *rounder;
- a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + *rounder;
-
- b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7];
- b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7];
- b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7];
- b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7];
-
- row[0] = (a0 + b0) >> ROW_SHIFT;
- row[1] = (a1 + b1) >> ROW_SHIFT;
- row[2] = (a2 + b2) >> ROW_SHIFT;
- row[3] = (a3 + b3) >> ROW_SHIFT;
- row[4] = (a3 - b3) >> ROW_SHIFT;
- row[5] = (a2 - b2) >> ROW_SHIFT;
- row[6] = (a1 - b1) >> ROW_SHIFT;
- row[7] = (a0 - b0) >> ROW_SHIFT;
-}
-#endif
-
-
-/* MMXEXT row IDCT */
-
-#define mmxext_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
- c4, c6, c4, c6, \
- c1, c3, -c1, -c5, \
- c5, c7, c3, -c7, \
- c4, -c6, c4, -c6, \
- -c4, c2, c4, -c2, \
- c5, -c1, c3, -c1, \
- c7, c3, c7, -c5 }
-
-static inline void mmxext_row_head (int16_t * row, int offset, int16_t * table)
-{
- movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
-
- movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
- movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
-
- movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
- movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
-
- movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
- pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
-
- pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
-}
-
-static inline void mmxext_row (int16_t * table, int32_t * rounder)
-{
- movq_m2r (*(table+8), mm1); // mm1 = -C5 -C1 C3 C1
- pmaddwd_r2r (mm2, mm4); // mm4 = C4*x0+C6*x2 C4*x4+C6*x6
-
- pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x4-C6*x6 C4*x0-C6*x2
- pshufw_r2r (mm6, mm6, 0x4e); // mm6 = x3 x1 x7 x5
-
- movq_m2r (*(table+12), mm7); // mm7 = -C7 C3 C7 C5
- pmaddwd_r2r (mm5, mm1); // mm1 = -C1*x5-C5*x7 C1*x1+C3*x3
-
- paddd_m2r (*rounder, mm3); // mm3 += rounder
- pmaddwd_r2r (mm6, mm7); // mm7 = C3*x1-C7*x3 C5*x5+C7*x7
-
- pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x0-C2*x2 -C4*x4+C2*x6
- paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
-
- pmaddwd_m2r (*(table+24), mm5); // mm5 = C3*x5-C1*x7 C5*x1-C1*x3
- movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
-
- pmaddwd_m2r (*(table+28), mm6); // mm6 = C7*x1-C5*x3 C7*x5+C3*x7
- paddd_r2r (mm7, mm1); // mm1 = b1 b0
-
- paddd_m2r (*rounder, mm0); // mm0 += rounder
- psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
-
- psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
- paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
-
- paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
- psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
-
- paddd_r2r (mm6, mm5); // mm5 = b3 b2
- movq_r2r (mm0, mm4); // mm4 = a3 a2 + rounder
-
- paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
- psubd_r2r (mm5, mm4); // mm4 = a3-b3 a2-b2 + rounder
-}
-
-static inline void mmxext_row_tail (int16_t * row, int store)
-{
- psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
-
- psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
-
- packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
-
- packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
-
- movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
- pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
-
- /* slot */
-
- movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
-}
-
-static inline void mmxext_row_mid (int16_t * row, int store,
- int offset, int16_t * table)
-{
- movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
- psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
-
- movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
- psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
-
- packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
- movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
-
- packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
- movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
-
- movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
- pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
-
- movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
- movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
-
- pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
-
- movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
- pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
-}
-
-
-/* MMX row IDCT */
-
-#define mmx_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
- c4, c6, -c4, -c2, \
- c1, c3, c3, -c7, \
- c5, c7, -c1, -c5, \
- c4, -c6, c4, -c2, \
- -c4, c2, c4, -c6, \
- c5, -c1, c7, -c5, \
- c7, c3, c3, -c1 }
-
-static inline void mmx_row_head (int16_t * row, int offset, int16_t * table)
-{
- movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
-
- movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
- movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
-
- movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
- movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
-
- punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
-
- movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
- pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
-
- movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
- punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
-}
-
-static inline void mmx_row (int16_t * table, int32_t * rounder)
-{
- pmaddwd_r2r (mm2, mm4); // mm4 = -C4*x4-C2*x6 C4*x4+C6*x6
- punpckldq_r2r (mm5, mm5); // mm5 = x3 x1 x3 x1
-
- pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x0-C2*x2 C4*x0-C6*x2
- punpckhdq_r2r (mm6, mm6); // mm6 = x7 x5 x7 x5
-
- movq_m2r (*(table+12), mm7); // mm7 = -C5 -C1 C7 C5
- pmaddwd_r2r (mm5, mm1); // mm1 = C3*x1-C7*x3 C1*x1+C3*x3
-
- paddd_m2r (*rounder, mm3); // mm3 += rounder
- pmaddwd_r2r (mm6, mm7); // mm7 = -C1*x5-C5*x7 C5*x5+C7*x7
-
- pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x4-C6*x6 -C4*x4+C2*x6
- paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
-
- pmaddwd_m2r (*(table+24), mm5); // mm5 = C7*x1-C5*x3 C5*x1-C1*x3
- movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
-
- pmaddwd_m2r (*(table+28), mm6); // mm6 = C3*x5-C1*x7 C7*x5+C3*x7
- paddd_r2r (mm7, mm1); // mm1 = b1 b0
-
- paddd_m2r (*rounder, mm0); // mm0 += rounder
- psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
-
- psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
- paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
-
- paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
- psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
-
- paddd_r2r (mm6, mm5); // mm5 = b3 b2
- movq_r2r (mm0, mm7); // mm7 = a3 a2 + rounder
-
- paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
- psubd_r2r (mm5, mm7); // mm7 = a3-b3 a2-b2 + rounder
-}
-
-static inline void mmx_row_tail (int16_t * row, int store)
-{
- psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
-
- psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
-
- packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
-
- packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
-
- movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
- movq_r2r (mm7, mm4); // mm4 = y6 y7 y4 y5
-
- pslld_i2r (16, mm7); // mm7 = y7 0 y5 0
-
- psrld_i2r (16, mm4); // mm4 = 0 y6 0 y4
-
- por_r2r (mm4, mm7); // mm7 = y7 y6 y5 y4
-
- /* slot */
-
- movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
-}
-
-static inline void mmx_row_mid (int16_t * row, int store,
- int offset, int16_t * table)
-{
- movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
- psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
-
- movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
- psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
-
- packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
- movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
-
- packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
- movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
-
- movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
- movq_r2r (mm7, mm1); // mm1 = y6 y7 y4 y5
-
- punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
- psrld_i2r (16, mm7); // mm7 = 0 y6 0 y4
-
- movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
- pslld_i2r (16, mm1); // mm1 = y7 0 y5 0
-
- movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
- por_r2r (mm1, mm7); // mm7 = y7 y6 y5 y4
-
- movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
- punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
-
- movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
- pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
-}
-
-
-#if 0
-// C column IDCT - its just here to document the MMXEXT and MMX versions
-static inline void idct_col (int16_t * col, int offset)
-{
-/* multiplication - as implemented on mmx */
-#define F(c,x) (((c) * (x)) >> 16)
-
-/* saturation - it helps us handle torture test cases */
-#define S(x) (((x)>32767) ? 32767 : ((x)<-32768) ? -32768 : (x))
-
- int16_t x0, x1, x2, x3, x4, x5, x6, x7;
- int16_t y0, y1, y2, y3, y4, y5, y6, y7;
- int16_t a0, a1, a2, a3, b0, b1, b2, b3;
- int16_t u04, v04, u26, v26, u17, v17, u35, v35, u12, v12;
-
- col += offset;
-
- x0 = col[0*8];
- x1 = col[1*8];
- x2 = col[2*8];
- x3 = col[3*8];
- x4 = col[4*8];
- x5 = col[5*8];
- x6 = col[6*8];
- x7 = col[7*8];
-
- u04 = S (x0 + x4);
- v04 = S (x0 - x4);
- u26 = S (F (T2, x6) + x2);
- v26 = S (F (T2, x2) - x6);
-
- a0 = S (u04 + u26);
- a1 = S (v04 + v26);
- a2 = S (v04 - v26);
- a3 = S (u04 - u26);
-
- u17 = S (F (T1, x7) + x1);
- v17 = S (F (T1, x1) - x7);
- u35 = S (F (T3, x5) + x3);
- v35 = S (F (T3, x3) - x5);
-
- b0 = S (u17 + u35);
- b3 = S (v17 - v35);
- u12 = S (u17 - u35);
- v12 = S (v17 + v35);
- u12 = S (2 * F (C4, u12));
- v12 = S (2 * F (C4, v12));
- b1 = S (u12 + v12);
- b2 = S (u12 - v12);
-
- y0 = S (a0 + b0) >> COL_SHIFT;
- y1 = S (a1 + b1) >> COL_SHIFT;
- y2 = S (a2 + b2) >> COL_SHIFT;
- y3 = S (a3 + b3) >> COL_SHIFT;
-
- y4 = S (a3 - b3) >> COL_SHIFT;
- y5 = S (a2 - b2) >> COL_SHIFT;
- y6 = S (a1 - b1) >> COL_SHIFT;
- y7 = S (a0 - b0) >> COL_SHIFT;
-
- col[0*8] = y0;
- col[1*8] = y1;
- col[2*8] = y2;
- col[3*8] = y3;
- col[4*8] = y4;
- col[5*8] = y5;
- col[6*8] = y6;
- col[7*8] = y7;
-}
-#endif
-
-
-// MMX column IDCT
-static inline void idct_col (int16_t * col, int offset)
-{
-#define T1 13036
-#define T2 27146
-#define T3 43790
-#define C4 23170
-
- static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
- static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
- static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
- static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
-
- /* column code adapted from peter gubanov */
- /* http://www.elecard.com/peter/idct.shtml */
-
- movq_m2r (*_T1, mm0); // mm0 = T1
-
- movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
- movq_r2r (mm0, mm2); // mm2 = T1
-
- movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
- pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
-
- movq_m2r (*_T3, mm5); // mm5 = T3
- pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
-
- movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
- movq_r2r (mm5, mm7); // mm7 = T3-1
-
- movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
- psubsw_r2r (mm4, mm0); // mm0 = v17
-
- movq_m2r (*_T2, mm4); // mm4 = T2
- pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
-
- paddsw_r2r (mm2, mm1); // mm1 = u17
- pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
-
- /* slot */
-
- movq_r2r (mm4, mm2); // mm2 = T2
- paddsw_r2r (mm3, mm5); // mm5 = T3*x3
-
- pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
- paddsw_r2r (mm6, mm7); // mm7 = T3*x5
-
- psubsw_r2r (mm6, mm5); // mm5 = v35
- paddsw_r2r (mm3, mm7); // mm7 = u35
-
- movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
- movq_r2r (mm0, mm6); // mm6 = v17
-
- pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
- psubsw_r2r (mm5, mm0); // mm0 = b3
-
- psubsw_r2r (mm3, mm4); // mm4 = v26
- 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 int32_t rounder0[] ATTR_ALIGN(8) =
- rounder ((1 << (COL_SHIFT - 1)) - 0.5);
-static int32_t rounder4[] ATTR_ALIGN(8) = rounder (0);
-static int32_t rounder1[] ATTR_ALIGN(8) =
- rounder (1.25683487303); /* C1*(C1/C4+C1+C7)/2 */
-static int32_t rounder7[] ATTR_ALIGN(8) =
- rounder (-0.25); /* C1*(C7/C4+C7-C1)/2 */
-static int32_t rounder2[] ATTR_ALIGN(8) =
- rounder (0.60355339059); /* C2 * (C6+C2)/2 */
-static int32_t rounder6[] ATTR_ALIGN(8) =
- rounder (-0.25); /* C2 * (C6-C2)/2 */
-static int32_t rounder3[] ATTR_ALIGN(8) =
- rounder (0.087788325588); /* C3*(-C3/C4+C3+C5)/2 */
-static 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 int16_t table04[] ATTR_ALIGN(16) = \
- table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \
- static int16_t table17[] ATTR_ALIGN(16) = \
- table (31521, 29692, 26722, 22725, 17855, 12299, 6270); \
- static int16_t table26[] ATTR_ALIGN(16) = \
- table (29692, 27969, 25172, 21407, 16819, 11585, 5906); \
- static 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); \
-}
-
-
-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)
projects / synfig.git / blobdiff