From f33802a005a3b021c9194871ba898a30f8ae2229 Mon Sep 17 00:00:00 2001 From: Fabrice Bellard Date: Tue, 7 Aug 2001 22:40:29 +0000 Subject: [PATCH] added idct mmx code Originally committed as revision 41 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/i386/idct_mmx.c | 590 +++++++++++++++++++++++++++++++++++++ 1 file changed, 590 insertions(+) create mode 100644 libavcodec/i386/idct_mmx.c diff --git a/libavcodec/i386/idct_mmx.c b/libavcodec/i386/idct_mmx.c new file mode 100644 index 0000000000..9f093d1c3e --- /dev/null +++ b/libavcodec/i386/idct_mmx.c @@ -0,0 +1,590 @@ +/* + * Note: For libavcodec, this code can also be used under the LGPL license + */ +/* + * idct_mmx.c + * Copyright (C) 1999-2001 Aaron Holtzman + * + * 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 + +#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; + 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 +} + + +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 */ + + +#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)