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/*
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* XVID MPEG-4 VIDEO CODEC
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* - MMX and XMM forward discrete cosine transform -
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*
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* Copyright(C) 2001 Peter Ross <pross@xvid.org>
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*
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* Originally provided by Intel at AP-922
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* http://developer.intel.com/vtune/cbts/strmsimd/922down.htm
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* (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm)
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* but in a limited edition.
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* New macro implements a column part for precise iDCT
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* The routine precision now satisfies IEEE standard 1180-1990.
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*
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* Copyright(C) 2000-2001 Peter Gubanov <peter@elecard.net.ru>
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* Rounding trick Copyright(C) 2000 Michel Lespinasse <walken@zoy.org>
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*
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* http://www.elecard.com/peter/idct.html
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* http://www.linuxvideo.org/mpeg2dec/
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*
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* These examples contain code fragments for first stage iDCT 8x8
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* (for rows) and first stage DCT 8x8 (for columns)
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*
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* conversion to gcc syntax by Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FFmpeg; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <inttypes.h>
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#include "config.h"
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#include "libavutil/mem.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/idctdsp.h"
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#include "idctdsp.h"
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#include "xvididct.h"
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#if HAVE_MMX_INLINE
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// -----------------------------------------------------------------------------
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// Various memory constants (trigonometric values or rounding values)
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// -----------------------------------------------------------------------------
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DECLARE_ALIGNED(8, static const int16_t, tg_1_16)[4 * 4] = {
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13036, 13036, 13036, 13036, // tg * (2 << 16) + 0.5
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27146, 27146, 27146, 27146, // tg * (2 << 16) + 0.5
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-21746, -21746, -21746, -21746, // tg * (2 << 16) + 0.5
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23170, 23170, 23170, 23170
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}; // cos * (2 << 15) + 0.5
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DECLARE_ALIGNED(8, static const int32_t, rounder_0)[2 * 8] = {
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65536, 65536,
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3597, 3597,
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2260, 2260,
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1203, 1203,
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0, 0,
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120, 120,
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512, 512,
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512, 512
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};
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// -----------------------------------------------------------------------------
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//
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// The first stage iDCT 8x8 - inverse DCTs of rows
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//
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// -----------------------------------------------------------------------------
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// The 8-point inverse DCT direct algorithm
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// -----------------------------------------------------------------------------
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//
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// static const short w[32] = {
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// FIX(cos_4_16), FIX(cos_2_16), FIX(cos_4_16), FIX(cos_6_16),
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// FIX(cos_4_16), FIX(cos_6_16), -FIX(cos_4_16), -FIX(cos_2_16),
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// FIX(cos_4_16), -FIX(cos_6_16), -FIX(cos_4_16), FIX(cos_2_16),
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// FIX(cos_4_16), -FIX(cos_2_16), FIX(cos_4_16), -FIX(cos_6_16),
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// FIX(cos_1_16), FIX(cos_3_16), FIX(cos_5_16), FIX(cos_7_16),
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// FIX(cos_3_16), -FIX(cos_7_16), -FIX(cos_1_16), -FIX(cos_5_16),
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// FIX(cos_5_16), -FIX(cos_1_16), FIX(cos_7_16), FIX(cos_3_16),
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// FIX(cos_7_16), -FIX(cos_5_16), FIX(cos_3_16), -FIX(cos_1_16) };
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//
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// #define DCT_8_INV_ROW(x, y)
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// {
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// int a0, a1, a2, a3, b0, b1, b2, b3;
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//
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// a0 = x[0] * w[0] + x[2] * w[1] + x[4] * w[2] + x[6] * w[3];
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// a1 = x[0] * w[4] + x[2] * w[5] + x[4] * w[6] + x[6] * w[7];
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// a2 = x[0] * w[8] + x[2] * w[9] + x[4] * w[10] + x[6] * w[11];
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// a3 = x[0] * w[12] + x[2] * w[13] + x[4] * w[14] + x[6] * w[15];
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// b0 = x[1] * w[16] + x[3] * w[17] + x[5] * w[18] + x[7] * w[19];
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// b1 = x[1] * w[20] + x[3] * w[21] + x[5] * w[22] + x[7] * w[23];
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// b2 = x[1] * w[24] + x[3] * w[25] + x[5] * w[26] + x[7] * w[27];
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// b3 = x[1] * w[28] + x[3] * w[29] + x[5] * w[30] + x[7] * w[31];
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//
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// y[0] = SHIFT_ROUND(a0 + b0);
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// y[1] = SHIFT_ROUND(a1 + b1);
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// y[2] = SHIFT_ROUND(a2 + b2);
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// y[3] = SHIFT_ROUND(a3 + b3);
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// y[4] = SHIFT_ROUND(a3 - b3);
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// y[5] = SHIFT_ROUND(a2 - b2);
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// y[6] = SHIFT_ROUND(a1 - b1);
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// y[7] = SHIFT_ROUND(a0 - b0);
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// }
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//
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// -----------------------------------------------------------------------------
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//
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// In this implementation the outputs of the iDCT-1D are multiplied
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// for rows 0,4 - by cos_4_16,
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// for rows 1,7 - by cos_1_16,
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// for rows 2,6 - by cos_2_16,
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// for rows 3,5 - by cos_3_16
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// and are shifted to the left for better accuracy.
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//
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// For the constants used,
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// FIX(float_const) = (short) (float_const * (1 << 15) + 0.5)
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//
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// Tables for mmx processors
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// -----------------------------------------------------------------------------
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// Table for rows 0,4 - constants are multiplied by cos_4_16
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DECLARE_ALIGNED(8, static const int16_t, tab_i_04_mmx)[32 * 4] = {
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16384, 16384, 16384, -16384, // movq-> w06 w04 w02 w00
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21407, 8867, 8867, -21407, // w07 w05 w03 w01
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16384, -16384, 16384, 16384, // w14 w12 w10 w08
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-8867, 21407, -21407, -8867, // w15 w13 w11 w09
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22725, 12873, 19266, -22725, // w22 w20 w18 w16
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19266, 4520, -4520, -12873, // w23 w21 w19 w17
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12873, 4520, 4520, 19266, // w30 w28 w26 w24
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-22725, 19266, -12873, -22725, // w31 w29 w27 w25
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// Table for rows 1,7 - constants are multiplied by cos_1_16
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22725, 22725, 22725, -22725, // movq-> w06 w04 w02 w00
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29692, 12299, 12299, -29692, // w07 w05 w03 w01
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22725, -22725, 22725, 22725, // w14 w12 w10 w08
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-12299, 29692, -29692, -12299, // w15 w13 w11 w09
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31521, 17855, 26722, -31521, // w22 w20 w18 w16
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26722, 6270, -6270, -17855, // w23 w21 w19 w17
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17855, 6270, 6270, 26722, // w30 w28 w26 w24
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-31521, 26722, -17855, -31521, // w31 w29 w27 w25
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// Table for rows 2,6 - constants are multiplied by cos_2_16
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21407, 21407, 21407, -21407, // movq-> w06 w04 w02 w00
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27969, 11585, 11585, -27969, // w07 w05 w03 w01
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21407, -21407, 21407, 21407, // w14 w12 w10 w08
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-11585, 27969, -27969, -11585, // w15 w13 w11 w09
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29692, 16819, 25172, -29692, // w22 w20 w18 w16
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25172, 5906, -5906, -16819, // w23 w21 w19 w17
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16819, 5906, 5906, 25172, // w30 w28 w26 w24
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-29692, 25172, -16819, -29692, // w31 w29 w27 w25
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// Table for rows 3,5 - constants are multiplied by cos_3_16
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19266, 19266, 19266, -19266, // movq-> w06 w04 w02 w00
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25172, 10426, 10426, -25172, // w07 w05 w03 w01
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19266, -19266, 19266, 19266, // w14 w12 w10 w08
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-10426, 25172, -25172, -10426, // w15 w13 w11 w09
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26722, 15137, 22654, -26722, // w22 w20 w18 w16
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22654, 5315, -5315, -15137, // w23 w21 w19 w17
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15137, 5315, 5315, 22654, // w30 w28 w26 w24
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-26722, 22654, -15137, -26722, // w31 w29 w27 w25
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};
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// -----------------------------------------------------------------------------
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// Tables for xmm processors
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// -----------------------------------------------------------------------------
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// %3 for rows 0,4 - constants are multiplied by cos_4_16
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DECLARE_ALIGNED(8, static const int16_t, tab_i_04_xmm)[32 * 4] = {
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16384, 21407, 16384, 8867, // movq-> w05 w04 w01 w00
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16384, 8867, -16384, -21407, // w07 w06 w03 w02
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16384, -8867, 16384, -21407, // w13 w12 w09 w08
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-16384, 21407, 16384, -8867, // w15 w14 w11 w10
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22725, 19266, 19266, -4520, // w21 w20 w17 w16
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12873, 4520, -22725, -12873, // w23 w22 w19 w18
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12873, -22725, 4520, -12873, // w29 w28 w25 w24
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4520, 19266, 19266, -22725, // w31 w30 w27 w26
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// %3 for rows 1,7 - constants are multiplied by cos_1_16
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22725, 29692, 22725, 12299, // movq-> w05 w04 w01 w00
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22725, 12299, -22725, -29692, // w07 w06 w03 w02
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22725, -12299, 22725, -29692, // w13 w12 w09 w08
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-22725, 29692, 22725, -12299, // w15 w14 w11 w10
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31521, 26722, 26722, -6270, // w21 w20 w17 w16
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17855, 6270, -31521, -17855, // w23 w22 w19 w18
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17855, -31521, 6270, -17855, // w29 w28 w25 w24
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6270, 26722, 26722, -31521, // w31 w30 w27 w26
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// %3 for rows 2,6 - constants are multiplied by cos_2_16
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21407, 27969, 21407, 11585, // movq-> w05 w04 w01 w00
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21407, 11585, -21407, -27969, // w07 w06 w03 w02
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21407, -11585, 21407, -27969, // w13 w12 w09 w08
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-21407, 27969, 21407, -11585, // w15 w14 w11 w10
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29692, 25172, 25172, -5906, // w21 w20 w17 w16
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16819, 5906, -29692, -16819, // w23 w22 w19 w18
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16819, -29692, 5906, -16819, // w29 w28 w25 w24
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5906, 25172, 25172, -29692, // w31 w30 w27 w26
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// %3 for rows 3,5 - constants are multiplied by cos_3_16
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19266, 25172, 19266, 10426, // movq-> w05 w04 w01 w00
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19266, 10426, -19266, -25172, // w07 w06 w03 w02
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19266, -10426, 19266, -25172, // w13 w12 w09 w08
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-19266, 25172, 19266, -10426, // w15 w14 w11 w10
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26722, 22654, 22654, -5315, // w21 w20 w17 w16
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15137, 5315, -26722, -15137, // w23 w22 w19 w18
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15137, -26722, 5315, -15137, // w29 w28 w25 w24
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5315, 22654, 22654, -26722, // w31 w30 w27 w26
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};
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// =============================================================================
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// Helper macros for the code
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// =============================================================================
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// -----------------------------------------------------------------------------
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// DCT_8_INV_ROW_MMX( INP, OUT, TABLE, ROUNDER
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// -----------------------------------------------------------------------------
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#define DCT_8_INV_ROW_MMX(A1, A2, A3, A4) \
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"movq "#A1", %%mm0 \n\t" /* 0 ; x3 x2 x1 x0 */ \
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"movq 8+"#A1", %%mm1 \n\t" /* 1 ; x7 x6 x5 x4 */ \
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"movq %%mm0, %%mm2 \n\t" /* 2 ; x3 x2 x1 x0 */ \
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"movq "#A3", %%mm3 \n\t" /* 3 ; w06 w04 w02 w00 */ \
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"punpcklwd %%mm1, %%mm0 \n\t" /* x5 x1 x4 x0 */ \
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"movq %%mm0, %%mm5 \n\t" /* 5 ; x5 x1 x4 x0 */ \
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"punpckldq %%mm0, %%mm0 \n\t" /* x4 x0 x4 x0 */ \
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"movq 8+"#A3", %%mm4 \n\t" /* 4 ; w07 w05 w03 w01 */ \
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"punpckhwd %%mm1, %%mm2 \n\t" /* 1 ; x7 x3 x6 x2 */ \
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"pmaddwd %%mm0, %%mm3 \n\t" /* x4*w06+x0*w04 x4*w02+x0*w00 */ \
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"movq %%mm2, %%mm6 \n\t" /* 6 ; x7 x3 x6 x2 */ \
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"movq 32+"#A3", %%mm1 \n\t" /* 1 ; w22 w20 w18 w16 */ \
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"punpckldq %%mm2, %%mm2 \n\t" /* x6 x2 x6 x2 */ \
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"pmaddwd %%mm2, %%mm4 \n\t" /* x6*w07+x2*w05 x6*w03+x2*w01 */ \
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"punpckhdq %%mm5, %%mm5 \n\t" /* x5 x1 x5 x1 */ \
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"pmaddwd 16+"#A3", %%mm0 \n\t" /* x4*w14+x0*w12 x4*w10+x0*w08 */ \
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"punpckhdq %%mm6, %%mm6 \n\t" /* x7 x3 x7 x3 */ \
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"movq 40+ "#A3", %%mm7 \n\t" /* 7 ; w23 w21 w19 w17 */ \
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"pmaddwd %%mm5, %%mm1 \n\t" /* x5*w22+x1*w20 x5*w18+x1*w16 */ \
|
|
|
|
|
"paddd "#A4", %%mm3 \n\t" /* +%4 */ \
|
|
|
|
|
"pmaddwd %%mm6, %%mm7 \n\t" /* x7*w23+x3*w21 x7*w19+x3*w17 */ \
|
|
|
|
|
"pmaddwd 24+"#A3", %%mm2 \n\t" /* x6*w15+x2*w13 x6*w11+x2*w09 */ \
|
|
|
|
|
"paddd %%mm4, %%mm3 \n\t" /* 4 ; a1=sum(even1) a0=sum(even0) */ \
|
|
|
|
|
"pmaddwd 48+"#A3", %%mm5 \n\t" /* x5*w30+x1*w28 x5*w26+x1*w24 */ \
|
|
|
|
|
"movq %%mm3, %%mm4 \n\t" /* 4 ; a1 a0 */ \
|
|
|
|
|
"pmaddwd 56+"#A3", %%mm6 \n\t" /* x7*w31+x3*w29 x7*w27+x3*w25 */ \
|
|
|
|
|
"paddd %%mm7, %%mm1 \n\t" /* 7 ; b1=sum(odd1) b0=sum(odd0) */ \
|
|
|
|
|
"paddd "#A4", %%mm0 \n\t" /* +%4 */ \
|
|
|
|
|
"psubd %%mm1, %%mm3 \n\t" /* a1-b1 a0-b0 */ \
|
|
|
|
|
"psrad $11, %%mm3 \n\t" /* y6=a1-b1 y7=a0-b0 */ \
|
|
|
|
|
"paddd %%mm4, %%mm1 \n\t" /* 4 ; a1+b1 a0+b0 */ \
|
|
|
|
|
"paddd %%mm2, %%mm0 \n\t" /* 2 ; a3=sum(even3) a2=sum(even2) */ \
|
|
|
|
|
"psrad $11, %%mm1 \n\t" /* y1=a1+b1 y0=a0+b0 */ \
|
|
|
|
|
"paddd %%mm6, %%mm5 \n\t" /* 6 ; b3=sum(odd3) b2=sum(odd2) */ \
|
|
|
|
|
"movq %%mm0, %%mm4 \n\t" /* 4 ; a3 a2 */ \
|
|
|
|
|
"paddd %%mm5, %%mm0 \n\t" /* a3+b3 a2+b2 */ \
|
|
|
|
|
"psubd %%mm5, %%mm4 \n\t" /* 5 ; a3-b3 a2-b2 */ \
|
|
|
|
|
"psrad $11, %%mm0 \n\t" /* y3=a3+b3 y2=a2+b2 */ \
|
|
|
|
|
"psrad $11, %%mm4 \n\t" /* y4=a3-b3 y5=a2-b2 */ \
|
|
|
|
|
"packssdw %%mm0, %%mm1 \n\t" /* 0 ; y3 y2 y1 y0 */ \
|
|
|
|
|
"packssdw %%mm3, %%mm4 \n\t" /* 3 ; y6 y7 y4 y5 */ \
|
|
|
|
|
"movq %%mm4, %%mm7 \n\t" /* 7 ; y6 y7 y4 y5 */ \
|
|
|
|
|
"psrld $16, %%mm4 \n\t" /* 0 y6 0 y4 */ \
|
|
|
|
|
"pslld $16, %%mm7 \n\t" /* y7 0 y5 0 */ \
|
|
|
|
|
"movq %%mm1, "#A2" \n\t" /* 1 ; save y3 y2 y1 y0 */ \
|
|
|
|
|
"por %%mm4, %%mm7 \n\t" /* 4 ; y7 y6 y5 y4 */ \
|
|
|
|
|
"movq %%mm7, 8+"#A2" \n\t" /* 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 \n\t" /* 0 ; x3 x2 x1 x0 */ \
|
|
|
|
|
"movq 8+"#A1", %%mm1 \n\t" /* 1 ; x7 x6 x5 x4 */ \
|
|
|
|
|
"movq %%mm0, %%mm2 \n\t" /* 2 ; x3 x2 x1 x0 */ \
|
|
|
|
|
"movq "#A3", %%mm3 \n\t" /* 3 ; w05 w04 w01 w00 */ \
|
|
|
|
|
"pshufw $0x88, %%mm0, %%mm0 \n\t" /* x2 x0 x2 x0 */ \
|
|
|
|
|
"movq 8+"#A3", %%mm4 \n\t" /* 4 ; w07 w06 w03 w02 */ \
|
|
|
|
|
"movq %%mm1, %%mm5 \n\t" /* 5 ; x7 x6 x5 x4 */ \
|
|
|
|
|
"pmaddwd %%mm0, %%mm3 \n\t" /* x2*w05+x0*w04 x2*w01+x0*w00 */ \
|
|
|
|
|
"movq 32+"#A3", %%mm6 \n\t" /* 6 ; w21 w20 w17 w16 */ \
|
|
|
|
|
"pshufw $0x88, %%mm1, %%mm1 \n\t" /* x6 x4 x6 x4 */ \
|
|
|
|
|
"pmaddwd %%mm1, %%mm4 \n\t" /* x6*w07+x4*w06 x6*w03+x4*w02 */ \
|
|
|
|
|
"movq 40+"#A3", %%mm7 \n\t" /* 7; w23 w22 w19 w18 */ \
|
|
|
|
|
"pshufw $0xdd, %%mm2, %%mm2 \n\t" /* x3 x1 x3 x1 */ \
|
|
|
|
|
"pmaddwd %%mm2, %%mm6 \n\t" /* x3*w21+x1*w20 x3*w17+x1*w16 */ \
|
|
|
|
|
"pshufw $0xdd, %%mm5, %%mm5 \n\t" /* x7 x5 x7 x5 */ \
|
|
|
|
|
"pmaddwd %%mm5, %%mm7 \n\t" /* x7*w23+x5*w22 x7*w19+x5*w18 */ \
|
|
|
|
|
"paddd "#A4", %%mm3 \n\t" /* +%4 */ \
|
|
|
|
|
"pmaddwd 16+"#A3", %%mm0 \n\t" /* x2*w13+x0*w12 x2*w09+x0*w08 */ \
|
|
|
|
|
"paddd %%mm4, %%mm3 \n\t" /* 4 ; a1=sum(even1) a0=sum(even0) */ \
|
|
|
|
|
"pmaddwd 24+"#A3", %%mm1 \n\t" /* x6*w15+x4*w14 x6*w11+x4*w10 */ \
|
|
|
|
|
"movq %%mm3, %%mm4 \n\t" /* 4 ; a1 a0 */ \
|
|
|
|
|
"pmaddwd 48+"#A3", %%mm2 \n\t" /* x3*w29+x1*w28 x3*w25+x1*w24 */ \
|
|
|
|
|
"paddd %%mm7, %%mm6 \n\t" /* 7 ; b1=sum(odd1) b0=sum(odd0) */ \
|
|
|
|
|
"pmaddwd 56+"#A3", %%mm5 \n\t" /* x7*w31+x5*w30 x7*w27+x5*w26 */ \
|
|
|
|
|
"paddd %%mm6, %%mm3 \n\t" /* a1+b1 a0+b0 */ \
|
|
|
|
|
"paddd "#A4", %%mm0 \n\t" /* +%4 */ \
|
|
|
|
|
"psrad $11, %%mm3 \n\t" /* y1=a1+b1 y0=a0+b0 */ \
|
|
|
|
|
"paddd %%mm1, %%mm0 \n\t" /* 1 ; a3=sum(even3) a2=sum(even2) */ \
|
|
|
|
|
"psubd %%mm6, %%mm4 \n\t" /* 6 ; a1-b1 a0-b0 */ \
|
|
|
|
|
"movq %%mm0, %%mm7 \n\t" /* 7 ; a3 a2 */ \
|
|
|
|
|
"paddd %%mm5, %%mm2 \n\t" /* 5 ; b3=sum(odd3) b2=sum(odd2) */ \
|
|
|
|
|
"paddd %%mm2, %%mm0 \n\t" /* a3+b3 a2+b2 */ \
|
|
|
|
|
"psrad $11, %%mm4 \n\t" /* y6=a1-b1 y7=a0-b0 */ \
|
|
|
|
|
"psubd %%mm2, %%mm7 \n\t" /* 2 ; a3-b3 a2-b2 */ \
|
|
|
|
|
"psrad $11, %%mm0 \n\t" /* y3=a3+b3 y2=a2+b2 */ \
|
|
|
|
|
"psrad $11, %%mm7 \n\t" /* y4=a3-b3 y5=a2-b2 */ \
|
|
|
|
|
"packssdw %%mm0, %%mm3 \n\t" /* 0 ; y3 y2 y1 y0 */ \
|
|
|
|
|
"packssdw %%mm4, %%mm7 \n\t" /* 4 ; y6 y7 y4 y5 */ \
|
|
|
|
|
"movq %%mm3, "#A2" \n\t" /* 3 ; save y3 y2 y1 y0 */ \
|
|
|
|
|
"pshufw $0xb1, %%mm7, %%mm7 \n\t" /* y7 y6 y5 y4 */ \
|
|
|
|
|
"movq %%mm7, 8+"#A2" \n\t" /* 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), %%mm0 \n\t" \
|
|
|
|
|
"movq 16*3+"#A1", %%mm3 \n\t" \
|
|
|
|
|
"movq %%mm0, %%mm1 \n\t" /* tg_3_16 */ \
|
|
|
|
|
"movq 16*5+"#A1", %%mm5 \n\t" \
|
|
|
|
|
"pmulhw %%mm3, %%mm0 \n\t" /* x3*(tg_3_16-1) */ \
|
|
|
|
|
"movq (%3), %%mm4 \n\t" \
|
|
|
|
|
"pmulhw %%mm5, %%mm1 \n\t" /* x5*(tg_3_16-1) */ \
|
|
|
|
|
"movq 16*7+"#A1", %%mm7 \n\t" \
|
|
|
|
|
"movq %%mm4, %%mm2 \n\t" /* tg_1_16 */ \
|
|
|
|
|
"movq 16*1+"#A1", %%mm6 \n\t" \
|
|
|
|
|
"pmulhw %%mm7, %%mm4 \n\t" /* x7*tg_1_16 */ \
|
|
|
|
|
"paddsw %%mm3, %%mm0 \n\t" /* x3*tg_3_16 */ \
|
|
|
|
|
"pmulhw %%mm6, %%mm2 \n\t" /* x1*tg_1_16 */ \
|
|
|
|
|
"paddsw %%mm3, %%mm1 \n\t" /* x3+x5*(tg_3_16-1) */ \
|
|
|
|
|
"psubsw %%mm5, %%mm0 \n\t" /* x3*tg_3_16-x5 = tm35 */ \
|
|
|
|
|
"movq 3*8(%3), %%mm3 \n\t" \
|
|
|
|
|
"paddsw %%mm5, %%mm1 \n\t" /* x3+x5*tg_3_16 = tp35 */ \
|
|
|
|
|
"paddsw %%mm6, %%mm4 \n\t" /* x1+tg_1_16*x7 = tp17 */ \
|
|
|
|
|
"psubsw %%mm7, %%mm2 \n\t" /* x1*tg_1_16-x7 = tm17 */ \
|
|
|
|
|
"movq %%mm4, %%mm5 \n\t" /* tp17 */ \
|
|
|
|
|
"movq %%mm2, %%mm6 \n\t" /* tm17 */ \
|
|
|
|
|
"paddsw %%mm1, %%mm5 \n\t" /* tp17+tp35 = b0 */ \
|
|
|
|
|
"psubsw %%mm0, %%mm6 \n\t" /* tm17-tm35 = b3 */ \
|
|
|
|
|
"psubsw %%mm1, %%mm4 \n\t" /* tp17-tp35 = t1 */ \
|
|
|
|
|
"paddsw %%mm0, %%mm2 \n\t" /* tm17+tm35 = t2 */ \
|
|
|
|
|
"movq 1*8(%3), %%mm7 \n\t" \
|
|
|
|
|
"movq %%mm4, %%mm1 \n\t" /* t1 */ \
|
|
|
|
|
"movq %%mm5, 3*16+"#A2" \n\t" /* save b0 */ \
|
|
|
|
|
"paddsw %%mm2, %%mm1 \n\t" /* t1+t2 */ \
|
|
|
|
|
"movq %%mm6, 5*16+"#A2" \n\t" /* save b3 */ \
|
|
|
|
|
"psubsw %%mm2, %%mm4 \n\t" /* t1-t2 */ \
|
|
|
|
|
"movq 2*16+"#A1", %%mm5 \n\t" \
|
|
|
|
|
"movq %%mm7, %%mm0 \n\t" /* tg_2_16 */ \
|
|
|
|
|
"movq 6*16+"#A1", %%mm6 \n\t" \
|
|
|
|
|
"pmulhw %%mm5, %%mm0 \n\t" /* x2*tg_2_16 */ \
|
|
|
|
|
"pmulhw %%mm6, %%mm7 \n\t" /* x6*tg_2_16 */ \
|
|
|
|
|
"pmulhw %%mm3, %%mm1 \n\t" /* ocos_4_16*(t1+t2) = b1/2 */ \
|
|
|
|
|
"movq 0*16+"#A1", %%mm2 \n\t" \
|
|
|
|
|
"pmulhw %%mm3, %%mm4 \n\t" /* ocos_4_16*(t1-t2) = b2/2 */ \
|
|
|
|
|
"psubsw %%mm6, %%mm0 \n\t" /* t2*tg_2_16-x6 = tm26 */ \
|
|
|
|
|
"movq %%mm2, %%mm3 \n\t" /* x0 */ \
|
|
|
|
|
"movq 4*16+"#A1", %%mm6 \n\t" \
|
|
|
|
|
"paddsw %%mm5, %%mm7 \n\t" /* x2+x6*tg_2_16 = tp26 */ \
|
|
|
|
|
"paddsw %%mm6, %%mm2 \n\t" /* x0+x4 = tp04 */ \
|
|
|
|
|
"psubsw %%mm6, %%mm3 \n\t" /* x0-x4 = tm04 */ \
|
|
|
|
|
"movq %%mm2, %%mm5 \n\t" /* tp04 */ \
|
|
|
|
|
"movq %%mm3, %%mm6 \n\t" /* tm04 */ \
|
|
|
|
|
"psubsw %%mm7, %%mm2 \n\t" /* tp04-tp26 = a3 */ \
|
|
|
|
|
"paddsw %%mm0, %%mm3 \n\t" /* tm04+tm26 = a1 */ \
|
|
|
|
|
"paddsw %%mm1, %%mm1 \n\t" /* b1 */ \
|
|
|
|
|
"paddsw %%mm4, %%mm4 \n\t" /* b2 */ \
|
|
|
|
|
"paddsw %%mm7, %%mm5 \n\t" /* tp04+tp26 = a0 */ \
|
|
|
|
|
"psubsw %%mm0, %%mm6 \n\t" /* tm04-tm26 = a2 */ \
|
|
|
|
|
"movq %%mm3, %%mm7 \n\t" /* a1 */ \
|
|
|
|
|
"movq %%mm6, %%mm0 \n\t" /* a2 */ \
|
|
|
|
|
"paddsw %%mm1, %%mm3 \n\t" /* a1+b1 */ \
|
|
|
|
|
"paddsw %%mm4, %%mm6 \n\t" /* a2+b2 */ \
|
|
|
|
|
"psraw $6, %%mm3 \n\t" /* dst1 */ \
|
|
|
|
|
"psubsw %%mm1, %%mm7 \n\t" /* a1-b1 */ \
|
|
|
|
|
"psraw $6, %%mm6 \n\t" /* dst2 */ \
|
|
|
|
|
"psubsw %%mm4, %%mm0 \n\t" /* a2-b2 */ \
|
|
|
|
|
"movq 3*16+"#A2", %%mm1 \n\t" /* load b0 */ \
|
|
|
|
|
"psraw $6, %%mm7 \n\t" /* dst6 */ \
|
|
|
|
|
"movq %%mm5, %%mm4 \n\t" /* a0 */ \
|
|
|
|
|
"psraw $6, %%mm0 \n\t" /* dst5 */ \
|
|
|
|
|
"movq %%mm3, 1*16+"#A2" \n\t" \
|
|
|
|
|
"paddsw %%mm1, %%mm5 \n\t" /* a0+b0 */ \
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"movq %%mm6, 2*16+"#A2" \n\t" \
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"psubsw %%mm1, %%mm4 \n\t" /* a0-b0 */ \
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"movq 5*16+"#A2", %%mm3 \n\t" /* load b3 */ \
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"psraw $6, %%mm5 \n\t" /* dst0 */ \
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"movq %%mm2, %%mm6 \n\t" /* a3 */ \
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"psraw $6, %%mm4 \n\t" /* dst7 */ \
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"movq %%mm0, 5*16+"#A2" \n\t" \
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"paddsw %%mm3, %%mm2 \n\t" /* a3+b3 */ \
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"movq %%mm7, 6*16+"#A2" \n\t" \
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"psubsw %%mm3, %%mm6 \n\t" /* a3-b3 */ \
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"movq %%mm5, 0*16+"#A2" \n\t" \
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"psraw $6, %%mm2 \n\t" /* dst3 */ \
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"movq %%mm4, 7*16+"#A2" \n\t" \
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"psraw $6, %%mm6 \n\t" /* dst4 */ \
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"movq %%mm2, 3*16+"#A2" \n\t" \
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"movq %%mm6, 4*16+"#A2" \n\t" \
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// =============================================================================
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// Code
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// =============================================================================
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// -----------------------------------------------------------------------------
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// void idct_mmx(uint16_t block[64]);
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// -----------------------------------------------------------------------------
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void ff_xvid_idct_mmx(short *block)
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{
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__asm__ volatile (
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// # Process each row
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DCT_8_INV_ROW_MMX(0 * 16(%0), 0 * 16(%0), 64 * 0(%2), 8 * 0(%1))
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DCT_8_INV_ROW_MMX(1 * 16(%0), 1 * 16(%0), 64 * 1(%2), 8 * 1(%1))
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DCT_8_INV_ROW_MMX(2 * 16(%0), 2 * 16(%0), 64 * 2(%2), 8 * 2(%1))
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DCT_8_INV_ROW_MMX(3 * 16(%0), 3 * 16(%0), 64 * 3(%2), 8 * 3(%1))
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DCT_8_INV_ROW_MMX(4 * 16(%0), 4 * 16(%0), 64 * 0(%2), 8 * 4(%1))
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DCT_8_INV_ROW_MMX(5 * 16(%0), 5 * 16(%0), 64 * 3(%2), 8 * 5(%1))
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DCT_8_INV_ROW_MMX(6 * 16(%0), 6 * 16(%0), 64 * 2(%2), 8 * 6(%1))
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DCT_8_INV_ROW_MMX(7 * 16(%0), 7 * 16(%0), 64 * 1(%2), 8 * 7(%1))
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// # Process the columns (4 at a time)
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DCT_8_INV_COL(0(%0), 0(%0))
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DCT_8_INV_COL(8(%0), 8(%0))
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:: "r" (block), "r" (rounder_0), "r" (tab_i_04_mmx), "r" (tg_1_16));
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}
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void ff_xvid_idct_mmx_put(uint8_t *dest, int line_size, int16_t *block)
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{
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ff_xvid_idct_mmx(block);
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ff_put_pixels_clamped(block, dest, line_size);
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}
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void ff_xvid_idct_mmx_add(uint8_t *dest, int line_size, int16_t *block)
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{
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ff_xvid_idct_mmx(block);
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ff_add_pixels_clamped(block, dest, line_size);
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}
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#endif /* HAVE_MMX_INLINE */
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#if HAVE_MMXEXT_INLINE
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// -----------------------------------------------------------------------------
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// void idct_xmm(uint16_t block[64]);
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|
// -----------------------------------------------------------------------------
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void ff_xvid_idct_mmxext(short *block)
|
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{
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__asm__ volatile (
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|
// # Process each row
|
|
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DCT_8_INV_ROW_XMM(0 * 16(%0), 0 * 16(%0), 64 * 0(%2), 8 * 0(%1))
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DCT_8_INV_ROW_XMM(1 * 16(%0), 1 * 16(%0), 64 * 1(%2), 8 * 1(%1))
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DCT_8_INV_ROW_XMM(2 * 16(%0), 2 * 16(%0), 64 * 2(%2), 8 * 2(%1))
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DCT_8_INV_ROW_XMM(3 * 16(%0), 3 * 16(%0), 64 * 3(%2), 8 * 3(%1))
|
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DCT_8_INV_ROW_XMM(4 * 16(%0), 4 * 16(%0), 64 * 0(%2), 8 * 4(%1))
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DCT_8_INV_ROW_XMM(5 * 16(%0), 5 * 16(%0), 64 * 3(%2), 8 * 5(%1))
|
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DCT_8_INV_ROW_XMM(6 * 16(%0), 6 * 16(%0), 64 * 2(%2), 8 * 6(%1))
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DCT_8_INV_ROW_XMM(7 * 16(%0), 7 * 16(%0), 64 * 1(%2), 8 * 7(%1))
|
|
|
|
|
|
|
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|
|
// # Process the columns (4 at a time)
|
|
|
|
|
DCT_8_INV_COL(0(%0), 0(%0))
|
|
|
|
|
DCT_8_INV_COL(8(%0), 8(%0))
|
|
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|
|
:: "r" (block), "r" (rounder_0), "r" (tab_i_04_xmm), "r" (tg_1_16));
|
|
|
|
|
}
|
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|
|
|
void ff_xvid_idct_mmxext_put(uint8_t *dest, int line_size, int16_t *block)
|
|
|
|
|
{
|
|
|
|
|
ff_xvid_idct_mmxext(block);
|
|
|
|
|
ff_put_pixels_clamped(block, dest, line_size);
|
|
|
|
|
}
|
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|
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|
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|
|
|
|
void ff_xvid_idct_mmxext_add(uint8_t *dest, int line_size, int16_t *block)
|
|
|
|
|
{
|
|
|
|
|
ff_xvid_idct_mmxext(block);
|
|
|
|
|
ff_add_pixels_clamped(block, dest, line_size);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* HAVE_MMXEXT_INLINE */
|
