idct_mmx_xvid.c
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Windows CE
开发平台:
C/C++
- ///****************************************************************************
- // *
- // * XVID MPEG-4 VIDEO CODEC
- // * - MMX and XMM forward discrete cosine transform -
- // *
- // * Copyright(C) 2001 Peter Ross <pross@xvid.org>
- // *
- // * 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 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
- // * 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
- // *
- // * $Id: idct_mmx_xvid.c,v 1.2 2005/09/10 19:03:37 michael Exp $
- // *
- // ***************************************************************************/
- // ****************************************************************************
- //
- // Originally provided by Intel at AP-922
- // http://developer.intel.com/vtune/cbts/strmsimd/922down.htm
- // (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm)
- // but in a limited edition.
- // New macro implements a column part for precise iDCT
- // The routine precision now satisfies IEEE standard 1180-1990.
- //
- // Copyright(C) 2000-2001 Peter Gubanov <peter@elecard.net.ru>
- // Rounding trick Copyright(C) 2000 Michel Lespinasse <walken@zoy.org>
- //
- // http://www.elecard.com/peter/idct.html
- // http://www.linuxvideo.org/mpeg2dec/
- //
- // ***************************************************************************/
- //
- // These examples contain code fragments for first stage iDCT 8x8
- // (for rows) and first stage DCT 8x8 (for columns)
- //
- // conversion to gcc syntax by michael niedermayer
- #include <inttypes.h>
- #include "../avcodec.h"
- //=============================================================================
- // Macros and other preprocessor constants
- //=============================================================================
- #define BITS_INV_ACC 5 // 4 or 5 for IEEE
- #define SHIFT_INV_ROW (16 - BITS_INV_ACC) //11
- #define SHIFT_INV_COL (1 + BITS_INV_ACC) //6
- #define RND_INV_ROW (1024 * (6 - BITS_INV_ACC))
- #define RND_INV_COL (16 * (BITS_INV_ACC - 3))
- #define RND_INV_CORR (RND_INV_COL - 1)
- #define BITS_FRW_ACC 3 // 2 or 3 for accuracy
- #define SHIFT_FRW_COL BITS_FRW_ACC
- #define SHIFT_FRW_ROW (BITS_FRW_ACC + 17)
- #define RND_FRW_ROW (262144*(BITS_FRW_ACC - 1))
- //-----------------------------------------------------------------------------
- // Various memory constants (trigonometric values or rounding values)
- //-----------------------------------------------------------------------------
- static const int16_t tg_1_16[4*4] attribute_used __attribute__ ((aligned(8))) = {
- 13036,13036,13036,13036, // tg * (2<<16) + 0.5
- 27146,27146,27146,27146, // tg * (2<<16) + 0.5
- -21746,-21746,-21746,-21746, // tg * (2<<16) + 0.5
- 23170,23170,23170,23170}; // cos * (2<<15) + 0.5
- static const int32_t rounder_0[2*8] attribute_used __attribute__ ((aligned(8))) = {
- 65536,65536,
- 3597,3597,
- 2260,2260,
- 1203,1203,
- 0,0,
- 120,120,
- 512,512,
- 512,512};
- //-----------------------------------------------------------------------------
- //
- // The first stage iDCT 8x8 - inverse DCTs of rows
- //
- //-----------------------------------------------------------------------------
- // The 8-point inverse DCT direct algorithm
- //-----------------------------------------------------------------------------
- //
- // static const short w[32] = {
- // FIX(cos_4_16), FIX(cos_2_16), FIX(cos_4_16), FIX(cos_6_16),
- // FIX(cos_4_16), FIX(cos_6_16), -FIX(cos_4_16), -FIX(cos_2_16),
- // FIX(cos_4_16), -FIX(cos_6_16), -FIX(cos_4_16), FIX(cos_2_16),
- // FIX(cos_4_16), -FIX(cos_2_16), FIX(cos_4_16), -FIX(cos_6_16),
- // FIX(cos_1_16), FIX(cos_3_16), FIX(cos_5_16), FIX(cos_7_16),
- // FIX(cos_3_16), -FIX(cos_7_16), -FIX(cos_1_16), -FIX(cos_5_16),
- // FIX(cos_5_16), -FIX(cos_1_16), FIX(cos_7_16), FIX(cos_3_16),
- // FIX(cos_7_16), -FIX(cos_5_16), FIX(cos_3_16), -FIX(cos_1_16) };
- //
- // #define DCT_8_INV_ROW(x, y)
- // {
- // int a0, a1, a2, a3, b0, b1, b2, b3;
- //
- // a0 =x[0]*w[0]+x[2]*w[1]+x[4]*w[2]+x[6]*w[3];
- // a1 =x[0]*w[4]+x[2]*w[5]+x[4]*w[6]+x[6]*w[7];
- // a2 = x[0] * w[ 8] + x[2] * w[ 9] + x[4] * w[10] + x[6] * w[11];
- // a3 = x[0] * w[12] + x[2] * w[13] + x[4] * w[14] + x[6] * w[15];
- // b0 = x[1] * w[16] + x[3] * w[17] + x[5] * w[18] + x[7] * w[19];
- // b1 = x[1] * w[20] + x[3] * w[21] + x[5] * w[22] + x[7] * w[23];
- // b2 = x[1] * w[24] + x[3] * w[25] + x[5] * w[26] + x[7] * w[27];
- // b3 = x[1] * w[28] + x[3] * w[29] + x[5] * w[30] + x[7] * w[31];
- //
- // y[0] = SHIFT_ROUND ( a0 + b0 );
- // y[1] = SHIFT_ROUND ( a1 + b1 );
- // y[2] = SHIFT_ROUND ( a2 + b2 );
- // y[3] = SHIFT_ROUND ( a3 + b3 );
- // y[4] = SHIFT_ROUND ( a3 - b3 );
- // y[5] = SHIFT_ROUND ( a2 - b2 );
- // y[6] = SHIFT_ROUND ( a1 - b1 );
- // y[7] = SHIFT_ROUND ( a0 - b0 );
- // }
- //
- //-----------------------------------------------------------------------------
- //
- // In this implementation the outputs of the iDCT-1D are multiplied
- // for rows 0,4 - by cos_4_16,
- // for rows 1,7 - by cos_1_16,
- // for rows 2,6 - by cos_2_16,
- // for rows 3,5 - by cos_3_16
- // and are shifted to the left for better accuracy
- //
- // For the constants used,
- // FIX(float_const) = (short) (float_const * (1<<15) + 0.5)
- //
- //-----------------------------------------------------------------------------
- //-----------------------------------------------------------------------------
- // Tables for mmx processors
- //-----------------------------------------------------------------------------
- // Table for rows 0,4 - constants are multiplied by cos_4_16
- static const int16_t tab_i_04_mmx[32*4] attribute_used __attribute__ ((aligned(8))) = {
- 16384,16384,16384,-16384, // movq-> w06 w04 w02 w00
- 21407,8867,8867,-21407, // w07 w05 w03 w01
- 16384,-16384,16384,16384, // w14 w12 w10 w08
- -8867,21407,-21407,-8867, // w15 w13 w11 w09
- 22725,12873,19266,-22725, // w22 w20 w18 w16
- 19266,4520,-4520,-12873, // w23 w21 w19 w17
- 12873,4520,4520,19266, // w30 w28 w26 w24
- -22725,19266,-12873,-22725, // w31 w29 w27 w25
- // Table for rows 1,7 - constants are multiplied by cos_1_16
- 22725,22725,22725,-22725, // movq-> w06 w04 w02 w00
- 29692,12299,12299,-29692, // w07 w05 w03 w01
- 22725,-22725,22725,22725, // w14 w12 w10 w08
- -12299,29692,-29692,-12299, // w15 w13 w11 w09
- 31521,17855,26722,-31521, // w22 w20 w18 w16
- 26722,6270,-6270,-17855, // w23 w21 w19 w17
- 17855,6270,6270,26722, // w30 w28 w26 w24
- -31521,26722,-17855,-31521, // w31 w29 w27 w25
- // Table for rows 2,6 - constants are multiplied by cos_2_16
- 21407,21407,21407,-21407, // movq-> w06 w04 w02 w00
- 27969,11585,11585,-27969, // w07 w05 w03 w01
- 21407,-21407,21407,21407, // w14 w12 w10 w08
- -11585,27969,-27969,-11585, // w15 w13 w11 w09
- 29692,16819,25172,-29692, // w22 w20 w18 w16
- 25172,5906,-5906,-16819, // w23 w21 w19 w17
- 16819,5906,5906,25172, // w30 w28 w26 w24
- -29692,25172,-16819,-29692, // w31 w29 w27 w25
- // Table for rows 3,5 - constants are multiplied by cos_3_16
- 19266,19266,19266,-19266, // movq-> w06 w04 w02 w00
- 25172,10426,10426,-25172, // w07 w05 w03 w01
- 19266,-19266,19266,19266, // w14 w12 w10 w08
- -10426,25172,-25172,-10426, // w15 w13 w11 w09
- 26722,15137,22654,-26722, // w22 w20 w18 w16
- 22654,5315,-5315,-15137, // w23 w21 w19 w17
- 15137,5315,5315,22654, // w30 w28 w26 w24
- -26722,22654,-15137,-26722, // w31 w29 w27 w25
- };
- //-----------------------------------------------------------------------------
- // Tables for xmm processors
- //-----------------------------------------------------------------------------
- // %3 for rows 0,4 - constants are multiplied by cos_4_16
- static const int16_t tab_i_04_xmm[32*4] attribute_used __attribute__ ((aligned(8))) = {
- 16384,21407,16384,8867, // movq-> w05 w04 w01 w00
- 16384,8867,-16384,-21407, // w07 w06 w03 w02
- 16384,-8867,16384,-21407, // w13 w12 w09 w08
- -16384,21407,16384,-8867, // w15 w14 w11 w10
- 22725,19266,19266,-4520, // w21 w20 w17 w16
- 12873,4520,-22725,-12873, // w23 w22 w19 w18
- 12873,-22725,4520,-12873, // w29 w28 w25 w24
- 4520,19266,19266,-22725, // w31 w30 w27 w26
- // %3 for rows 1,7 - constants are multiplied by cos_1_16
- 22725,29692,22725,12299, // movq-> w05 w04 w01 w00
- 22725,12299,-22725,-29692, // w07 w06 w03 w02
- 22725,-12299,22725,-29692, // w13 w12 w09 w08
- -22725,29692,22725,-12299, // w15 w14 w11 w10
- 31521,26722,26722,-6270, // w21 w20 w17 w16
- 17855,6270,-31521,-17855, // w23 w22 w19 w18
- 17855,-31521,6270,-17855, // w29 w28 w25 w24
- 6270,26722,26722,-31521, // w31 w30 w27 w26
- // %3 for rows 2,6 - constants are multiplied by cos_2_16
- 21407,27969,21407,11585, // movq-> w05 w04 w01 w00
- 21407,11585,-21407,-27969, // w07 w06 w03 w02
- 21407,-11585,21407,-27969, // w13 w12 w09 w08
- -21407,27969,21407,-11585, // w15 w14 w11 w10
- 29692,25172,25172,-5906, // w21 w20 w17 w16
- 16819,5906,-29692,-16819, // w23 w22 w19 w18
- 16819,-29692,5906,-16819, // w29 w28 w25 w24
- 5906,25172,25172,-29692, // w31 w30 w27 w26
- // %3 for rows 3,5 - constants are multiplied by cos_3_16
- 19266,25172,19266,10426, // movq-> w05 w04 w01 w00
- 19266,10426,-19266,-25172, // w07 w06 w03 w02
- 19266,-10426,19266,-25172, // w13 w12 w09 w08
- -19266,25172,19266,-10426, // w15 w14 w11 w10
- 26722,22654,22654,-5315, // w21 w20 w17 w16
- 15137,5315,-26722,-15137, // w23 w22 w19 w18
- 15137,-26722,5315,-15137, // w29 w28 w25 w24
- 5315,22654,22654,-26722, // w31 w30 w27 w26
- };
- //=============================================================================
- // Helper macros for the code
- //=============================================================================
- //-----------------------------------------------------------------------------
- // DCT_8_INV_ROW_MMX( INP, OUT, TABLE, ROUNDER
- //-----------------------------------------------------------------------------
- #define DCT_8_INV_ROW_MMX(A1,A2,A3,A4)
- "movq " #A1 ",%%mm0 nt"/* 0 ; x3 x2 x1 x0*/
- "movq 8+" #A1 ",%%mm1 nt"/* 1 ; x7 x6 x5 x4*/
- "movq %%mm0,%%mm2 nt"/* 2 ; x3 x2 x1 x0*/
- "movq " #A3 ",%%mm3 nt"/* 3 ; w06 w04 w02 w00*/
- "punpcklwd %%mm1,%%mm0 nt"/* x5 x1 x4 x0*/
- "movq %%mm0,%%mm5 nt"/* 5 ; x5 x1 x4 x0*/
- "punpckldq %%mm0,%%mm0 nt"/* x4 x0 x4 x0*/
- "movq 8+" #A3 ",%%mm4 nt"/* 4 ; w07 w05 w03 w01*/
- "punpckhwd %%mm1,%%mm2 nt"/* 1 ; x7 x3 x6 x2*/
- "pmaddwd %%mm0,%%mm3 nt"/* x4*w06+x0*w04 x4*w02+x0*w00*/
- "movq %%mm2,%%mm6 nt"/* 6 ; x7 x3 x6 x2*/
- "movq 32+" #A3 ",%%mm1 nt"/* 1 ; w22 w20 w18 w16*/
- "punpckldq %%mm2,%%mm2 nt"/* x6 x2 x6 x2*/
- "pmaddwd %%mm2,%%mm4 nt"/* x6*w07+x2*w05 x6*w03+x2*w01*/
- "punpckhdq %%mm5,%%mm5 nt"/* x5 x1 x5 x1*/
- "pmaddwd 16+" #A3 ",%%mm0 nt"/* x4*w14+x0*w12 x4*w10+x0*w08*/
- "punpckhdq %%mm6,%%mm6 nt"/* x7 x3 x7 x3*/
- "movq 40+" #A3 ",%%mm7 nt"/* 7 ; w23 w21 w19 w17*/
- "pmaddwd %%mm5,%%mm1 nt"/* x5*w22+x1*w20 x5*w18+x1*w16*/
- "paddd " #A4 ",%%mm3 nt"/* +%4*/
- "pmaddwd %%mm6,%%mm7 nt"/* x7*w23+x3*w21 x7*w19+x3*w17*/
- "pmaddwd 24+" #A3 ",%%mm2 nt"/* x6*w15+x2*w13 x6*w11+x2*w09*/
- "paddd %%mm4,%%mm3 nt"/* 4 ; a1=sum(even1) a0=sum(even0)*/
- "pmaddwd 48+" #A3 ",%%mm5 nt"/* x5*w30+x1*w28 x5*w26+x1*w24*/
- "movq %%mm3,%%mm4 nt"/* 4 ; a1 a0*/
- "pmaddwd 56+" #A3 ",%%mm6 nt"/* x7*w31+x3*w29 x7*w27+x3*w25*/
- "paddd %%mm7,%%mm1 nt"/* 7 ; b1=sum(odd1) b0=sum(odd0)*/
- "paddd " #A4 ",%%mm0 nt"/* +%4*/
- "psubd %%mm1,%%mm3 nt"/* a1-b1 a0-b0*/
- "psrad $11,%%mm3 nt"/* y6=a1-b1 y7=a0-b0*/
- "paddd %%mm4,%%mm1 nt"/* 4 ; a1+b1 a0+b0*/
- "paddd %%mm2,%%mm0 nt"/* 2 ; a3=sum(even3) a2=sum(even2)*/
- "psrad $11,%%mm1 nt"/* y1=a1+b1 y0=a0+b0*/
- "paddd %%mm6,%%mm5 nt"/* 6 ; b3=sum(odd3) b2=sum(odd2)*/
- "movq %%mm0,%%mm4 nt"/* 4 ; a3 a2*/
- "paddd %%mm5,%%mm0 nt"/* a3+b3 a2+b2*/
- "psubd %%mm5,%%mm4 nt"/* 5 ; a3-b3 a2-b2*/
- "psrad $11,%%mm0 nt"/* y3=a3+b3 y2=a2+b2*/
- "psrad $11,%%mm4 nt"/* y4=a3-b3 y5=a2-b2*/
- "packssdw %%mm0,%%mm1 nt"/* 0 ; y3 y2 y1 y0*/
- "packssdw %%mm3,%%mm4 nt"/* 3 ; y6 y7 y4 y5*/
- "movq %%mm4,%%mm7 nt"/* 7 ; y6 y7 y4 y5*/
- "psrld $16,%%mm4 nt"/* 0 y6 0 y4*/
- "pslld $16,%%mm7 nt"/* y7 0 y5 0*/
- "movq %%mm1," #A2 " nt"/* 1 ; save y3 y2 y1 y0*/
- "por %%mm4,%%mm7 nt"/* 4 ; y7 y6 y5 y4*/
- "movq %%mm7,8 +" #A2 "nt"/* 7 ; save y7 y6 y5 y4*/
- //-----------------------------------------------------------------------------
- // DCT_8_INV_ROW_XMM( INP, OUT, TABLE, ROUNDER
- //-----------------------------------------------------------------------------
- #define DCT_8_INV_ROW_XMM(A1,A2,A3,A4)
- "movq " #A1 ",%%mm0 nt"/* 0 ; x3 x2 x1 x0*/
- "movq 8+" #A1 ",%%mm1 nt"/* 1 ; x7 x6 x5 x4*/
- "movq %%mm0,%%mm2 nt"/* 2 ; x3 x2 x1 x0*/
- "movq " #A3 ",%%mm3 nt"/* 3 ; w05 w04 w01 w00*/
- "pshufw $0b10001000,%%mm0,%%mm0 nt"/* x2 x0 x2 x0*/
- "movq 8+" #A3 ",%%mm4 nt"/* 4 ; w07 w06 w03 w02*/
- "movq %%mm1,%%mm5 nt"/* 5 ; x7 x6 x5 x4*/
- "pmaddwd %%mm0,%%mm3 nt"/* x2*w05+x0*w04 x2*w01+x0*w00*/
- "movq 32+" #A3 ",%%mm6 nt"/* 6 ; w21 w20 w17 w16*/
- "pshufw $0b10001000,%%mm1,%%mm1 nt"/* x6 x4 x6 x4*/
- "pmaddwd %%mm1,%%mm4 nt"/* x6*w07+x4*w06 x6*w03+x4*w02*/
- "movq 40+" #A3 ",%%mm7 nt"/* 7 ; w23 w22 w19 w18*/
- "pshufw $0b11011101,%%mm2,%%mm2 nt"/* x3 x1 x3 x1*/
- "pmaddwd %%mm2,%%mm6 nt"/* x3*w21+x1*w20 x3*w17+x1*w16*/
- "pshufw $0b11011101,%%mm5,%%mm5 nt"/* x7 x5 x7 x5*/
- "pmaddwd %%mm5,%%mm7 nt"/* x7*w23+x5*w22 x7*w19+x5*w18*/
- "paddd " #A4 ",%%mm3 nt"/* +%4*/
- "pmaddwd 16+" #A3 ",%%mm0 nt"/* x2*w13+x0*w12 x2*w09+x0*w08*/
- "paddd %%mm4,%%mm3 nt"/* 4 ; a1=sum(even1) a0=sum(even0)*/
- "pmaddwd 24+" #A3 ",%%mm1 nt"/* x6*w15+x4*w14 x6*w11+x4*w10*/
- "movq %%mm3,%%mm4 nt"/* 4 ; a1 a0*/
- "pmaddwd 48+" #A3 ",%%mm2 nt"/* x3*w29+x1*w28 x3*w25+x1*w24*/
- "paddd %%mm7,%%mm6 nt"/* 7 ; b1=sum(odd1) b0=sum(odd0)*/
- "pmaddwd 56+" #A3 ",%%mm5 nt"/* x7*w31+x5*w30 x7*w27+x5*w26*/
- "paddd %%mm6,%%mm3 nt"/* a1+b1 a0+b0*/
- "paddd " #A4 ",%%mm0 nt"/* +%4*/
- "psrad $11,%%mm3 nt"/* y1=a1+b1 y0=a0+b0*/
- "paddd %%mm1,%%mm0 nt"/* 1 ; a3=sum(even3) a2=sum(even2)*/
- "psubd %%mm6,%%mm4 nt"/* 6 ; a1-b1 a0-b0*/
- "movq %%mm0,%%mm7 nt"/* 7 ; a3 a2*/
- "paddd %%mm5,%%mm2 nt"/* 5 ; b3=sum(odd3) b2=sum(odd2)*/
- "paddd %%mm2,%%mm0 nt"/* a3+b3 a2+b2*/
- "psrad $11,%%mm4 nt"/* y6=a1-b1 y7=a0-b0*/
- "psubd %%mm2,%%mm7 nt"/* 2 ; a3-b3 a2-b2*/
- "psrad $11,%%mm0 nt"/* y3=a3+b3 y2=a2+b2*/
- "psrad $11,%%mm7 nt"/* y4=a3-b3 y5=a2-b2*/
- "packssdw %%mm0,%%mm3 nt"/* 0 ; y3 y2 y1 y0*/
- "packssdw %%mm4,%%mm7 nt"/* 4 ; y6 y7 y4 y5*/
- "movq %%mm3, " #A2 " nt"/* 3 ; save y3 y2 y1 y0*/
- "pshufw $0b10110001,%%mm7,%%mm7 nt"/* y7 y6 y5 y4*/
- "movq %%mm7,8 +" #A2 "nt"/* 7 ; save y7 y6 y5 y4*/
- //-----------------------------------------------------------------------------
- //
- // The first stage DCT 8x8 - forward DCTs of columns
- //
- // The %2puts are multiplied
- // for rows 0,4 - on cos_4_16,
- // for rows 1,7 - on cos_1_16,
- // for rows 2,6 - on cos_2_16,
- // for rows 3,5 - on cos_3_16
- // and are shifted to the left for rise of accuracy
- //
- //-----------------------------------------------------------------------------
- //
- // The 8-point scaled forward DCT algorithm (26a8m)
- //
- //-----------------------------------------------------------------------------
- //
- // #define DCT_8_FRW_COL(x, y)
- //{
- // short t0, t1, t2, t3, t4, t5, t6, t7;
- // short tp03, tm03, tp12, tm12, tp65, tm65;
- // short tp465, tm465, tp765, tm765;
- //
- // t0 = LEFT_SHIFT ( x[0] + x[7] );
- // t1 = LEFT_SHIFT ( x[1] + x[6] );
- // t2 = LEFT_SHIFT ( x[2] + x[5] );
- // t3 = LEFT_SHIFT ( x[3] + x[4] );
- // t4 = LEFT_SHIFT ( x[3] - x[4] );
- // t5 = LEFT_SHIFT ( x[2] - x[5] );
- // t6 = LEFT_SHIFT ( x[1] - x[6] );
- // t7 = LEFT_SHIFT ( x[0] - x[7] );
- //
- // tp03 = t0 + t3;
- // tm03 = t0 - t3;
- // tp12 = t1 + t2;
- // tm12 = t1 - t2;
- //
- // y[0] = tp03 + tp12;
- // y[4] = tp03 - tp12;
- //
- // y[2] = tm03 + tm12 * tg_2_16;
- // y[6] = tm03 * tg_2_16 - tm12;
- //
- // tp65 =(t6 +t5 )*cos_4_16;
- // tm65 =(t6 -t5 )*cos_4_16;
- //
- // tp765 = t7 + tp65;
- // tm765 = t7 - tp65;
- // tp465 = t4 + tm65;
- // tm465 = t4 - tm65;
- //
- // y[1] = tp765 + tp465 * tg_1_16;
- // y[7] = tp765 * tg_1_16 - tp465;
- // y[5] = tm765 * tg_3_16 + tm465;
- // y[3] = tm765 - tm465 * tg_3_16;
- //}
- //
- //-----------------------------------------------------------------------------
- //-----------------------------------------------------------------------------
- // DCT_8_INV_COL_4 INP,OUT
- //-----------------------------------------------------------------------------
- #define DCT_8_INV_COL(A1,A2)
- "movq 2*8(%3),%%mm0nt"
- "movq 16*3+" #A1 ",%%mm3nt"
- "movq %%mm0,%%mm1 nt"/* tg_3_16*/
- "movq 16*5+" #A1 ",%%mm5nt"
- "pmulhw %%mm3,%%mm0 nt"/* x3*(tg_3_16-1)*/
- "movq (%3),%%mm4nt"
- "pmulhw %%mm5,%%mm1 nt"/* x5*(tg_3_16-1)*/
- "movq 16*7+" #A1 ",%%mm7nt"
- "movq %%mm4,%%mm2 nt"/* tg_1_16*/
- "movq 16*1+" #A1 ",%%mm6nt"
- "pmulhw %%mm7,%%mm4 nt"/* x7*tg_1_16*/
- "paddsw %%mm3,%%mm0 nt"/* x3*tg_3_16*/
- "pmulhw %%mm6,%%mm2 nt"/* x1*tg_1_16*/
- "paddsw %%mm3,%%mm1 nt"/* x3+x5*(tg_3_16-1)*/
- "psubsw %%mm5,%%mm0 nt"/* x3*tg_3_16-x5 = tm35*/
- "movq 3*8(%3),%%mm3nt"
- "paddsw %%mm5,%%mm1 nt"/* x3+x5*tg_3_16 = tp35*/
- "paddsw %%mm6,%%mm4 nt"/* x1+tg_1_16*x7 = tp17*/
- "psubsw %%mm7,%%mm2 nt"/* x1*tg_1_16-x7 = tm17*/
- "movq %%mm4,%%mm5 nt"/* tp17*/
- "movq %%mm2,%%mm6 nt"/* tm17*/
- "paddsw %%mm1,%%mm5 nt"/* tp17+tp35 = b0*/
- "psubsw %%mm0,%%mm6 nt"/* tm17-tm35 = b3*/
- "psubsw %%mm1,%%mm4 nt"/* tp17-tp35 = t1*/
- "paddsw %%mm0,%%mm2 nt"/* tm17+tm35 = t2*/
- "movq 1*8(%3),%%mm7nt"
- "movq %%mm4,%%mm1 nt"/* t1*/
- "movq %%mm5,3*16 +" #A2 "nt"/* save b0*/
- "paddsw %%mm2,%%mm1 nt"/* t1+t2*/
- "movq %%mm6,5*16 +" #A2 "nt"/* save b3*/
- "psubsw %%mm2,%%mm4 nt"/* t1-t2*/
- "movq 2*16+" #A1 ",%%mm5nt"
- "movq %%mm7,%%mm0 nt"/* tg_2_16*/
- "movq 6*16+" #A1 ",%%mm6nt"
- "pmulhw %%mm5,%%mm0 nt"/* x2*tg_2_16*/
- "pmulhw %%mm6,%%mm7 nt"/* x6*tg_2_16*/
- "pmulhw %%mm3,%%mm1 nt"/* ocos_4_16*(t1+t2) = b1/2*/
- "movq 0*16+" #A1 ",%%mm2nt"
- "pmulhw %%mm3,%%mm4 nt"/* ocos_4_16*(t1-t2) = b2/2*/
- "psubsw %%mm6,%%mm0 nt"/* t2*tg_2_16-x6 = tm26*/
- "movq %%mm2,%%mm3 nt"/* x0*/
- "movq 4*16+" #A1 ",%%mm6nt"
- "paddsw %%mm5,%%mm7 nt"/* x2+x6*tg_2_16 = tp26*/
- "paddsw %%mm6,%%mm2 nt"/* x0+x4 = tp04*/
- "psubsw %%mm6,%%mm3 nt"/* x0-x4 = tm04*/
- "movq %%mm2,%%mm5 nt"/* tp04*/
- "movq %%mm3,%%mm6 nt"/* tm04*/
- "psubsw %%mm7,%%mm2 nt"/* tp04-tp26 = a3*/
- "paddsw %%mm0,%%mm3 nt"/* tm04+tm26 = a1*/
- "paddsw %%mm1,%%mm1 nt"/* b1*/
- "paddsw %%mm4,%%mm4 nt"/* b2*/
- "paddsw %%mm7,%%mm5 nt"/* tp04+tp26 = a0*/
- "psubsw %%mm0,%%mm6 nt"/* tm04-tm26 = a2*/
- "movq %%mm3,%%mm7 nt"/* a1*/
- "movq %%mm6,%%mm0 nt"/* a2*/
- "paddsw %%mm1,%%mm3 nt"/* a1+b1*/
- "paddsw %%mm4,%%mm6 nt"/* a2+b2*/
- "psraw $6,%%mm3 nt"/* dst1*/
- "psubsw %%mm1,%%mm7 nt"/* a1-b1*/
- "psraw $6,%%mm6 nt"/* dst2*/
- "psubsw %%mm4,%%mm0 nt"/* a2-b2*/
- "movq 3*16+" #A2 ",%%mm1 nt"/* load b0*/
- "psraw $6,%%mm7 nt"/* dst6*/
- "movq %%mm5,%%mm4 nt"/* a0*/
- "psraw $6,%%mm0 nt"/* dst5*/
- "movq %%mm3,1*16+" #A2 "nt"
- "paddsw %%mm1,%%mm5 nt"/* a0+b0*/
- "movq %%mm6,2*16+" #A2 "nt"
- "psubsw %%mm1,%%mm4 nt"/* a0-b0*/
- "movq 5*16+" #A2 ",%%mm3 nt"/* load b3*/
- "psraw $6,%%mm5 nt"/* dst0*/
- "movq %%mm2,%%mm6 nt"/* a3*/
- "psraw $6,%%mm4 nt"/* dst7*/
- "movq %%mm0,5*16+" #A2 "nt"
- "paddsw %%mm3,%%mm2 nt"/* a3+b3*/
- "movq %%mm7,6*16+" #A2 "nt"
- "psubsw %%mm3,%%mm6 nt"/* a3-b3*/
- "movq %%mm5,0*16+" #A2 "nt"
- "psraw $6,%%mm2 nt"/* dst3*/
- "movq %%mm4,7*16+" #A2 "nt"
- "psraw $6,%%mm6 nt"/* dst4*/
- "movq %%mm2,3*16+" #A2 "nt"
- "movq %%mm6,4*16+" #A2 "nt"
- //=============================================================================
- // Code
- //=============================================================================
- //-----------------------------------------------------------------------------
- // void idct_mmx(uint16_t block[64]);
- //-----------------------------------------------------------------------------
- void ff_idct_xvid_mmx(short *block){
- asm volatile(
- //# Process each row
- DCT_8_INV_ROW_MMX(0*16(%0), 0*16(%0), 64*0(%2), 8*0(%1))
- DCT_8_INV_ROW_MMX(1*16(%0), 1*16(%0), 64*1(%2), 8*1(%1))
- DCT_8_INV_ROW_MMX(2*16(%0), 2*16(%0), 64*2(%2), 8*2(%1))
- DCT_8_INV_ROW_MMX(3*16(%0), 3*16(%0), 64*3(%2), 8*3(%1))
- DCT_8_INV_ROW_MMX(4*16(%0), 4*16(%0), 64*0(%2), 8*4(%1))
- DCT_8_INV_ROW_MMX(5*16(%0), 5*16(%0), 64*3(%2), 8*5(%1))
- DCT_8_INV_ROW_MMX(6*16(%0), 6*16(%0), 64*2(%2), 8*6(%1))
- DCT_8_INV_ROW_MMX(7*16(%0), 7*16(%0), 64*1(%2), 8*7(%1))
- //# Process the columns (4 at a time)
- DCT_8_INV_COL(0(%0), 0(%0))
- DCT_8_INV_COL(8(%0), 8(%0))
- :: "r"(block), "r"(rounder_0), "r"(tab_i_04_mmx), "r"(tg_1_16));
- }
- //-----------------------------------------------------------------------------
- // void idct_xmm(uint16_t block[64]);
- //-----------------------------------------------------------------------------
- void ff_idct_xvid_mmx2(short *block){
- asm volatile(
- //# Process each row
- DCT_8_INV_ROW_XMM(0*16(%0), 0*16(%0), 64*0(%2), 8*0(%1))
- DCT_8_INV_ROW_XMM(1*16(%0), 1*16(%0), 64*1(%2), 8*1(%1))
- DCT_8_INV_ROW_XMM(2*16(%0), 2*16(%0), 64*2(%2), 8*2(%1))
- DCT_8_INV_ROW_XMM(3*16(%0), 3*16(%0), 64*3(%2), 8*3(%1))
- DCT_8_INV_ROW_XMM(4*16(%0), 4*16(%0), 64*0(%2), 8*4(%1))
- DCT_8_INV_ROW_XMM(5*16(%0), 5*16(%0), 64*3(%2), 8*5(%1))
- DCT_8_INV_ROW_XMM(6*16(%0), 6*16(%0), 64*2(%2), 8*6(%1))
- DCT_8_INV_ROW_XMM(7*16(%0), 7*16(%0), 64*1(%2), 8*7(%1))
- //# Process the columns (4 at a time)
- DCT_8_INV_COL(0(%0), 0(%0))
- DCT_8_INV_COL(8(%0), 8(%0))
- :: "r"(block), "r"(rounder_0), "r"(tab_i_04_xmm), "r"(tg_1_16));
- }