steve
/
winamp
mirror of https://github.com/WinampDesktop/winamp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
winamp/Src/external_dependencies/openmpt-trunk/include/lame/mpglib/dct64_i386.c

349 lines
12 KiB
C
Raw Blame History

/*
* dct64_i368.c
*
* Copyright (C) 1999-2010 The L.A.M.E. project
*
* Initially written by Michael Hipp, see also AUTHORS and README.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*
* Discrete Cosine Tansform (DCT) for subband synthesis
* optimized for machines with no auto-increment.
* The performance is highly compiler dependend. Maybe
* the dct64.c version for 'normal' processor may be faster
* even for Intel processors.
*/
/* $Id: dct64_i386.c,v 1.14 2010/03/22 14:30:19 robert Exp $ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "dct64_i386.h"
#include "tabinit.h"
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
static void
dct64_1(real * out0, real * out1, real * b1, real * b2, real * samples)
{
{
real *costab = pnts[0];
b1[0x00] = samples[0x00] + samples[0x1F];
b1[0x1F] = (samples[0x00] - samples[0x1F]) * costab[0x0];
b1[0x01] = samples[0x01] + samples[0x1E];
b1[0x1E] = (samples[0x01] - samples[0x1E]) * costab[0x1];
b1[0x02] = samples[0x02] + samples[0x1D];
b1[0x1D] = (samples[0x02] - samples[0x1D]) * costab[0x2];
b1[0x03] = samples[0x03] + samples[0x1C];
b1[0x1C] = (samples[0x03] - samples[0x1C]) * costab[0x3];
b1[0x04] = samples[0x04] + samples[0x1B];
b1[0x1B] = (samples[0x04] - samples[0x1B]) * costab[0x4];
b1[0x05] = samples[0x05] + samples[0x1A];
b1[0x1A] = (samples[0x05] - samples[0x1A]) * costab[0x5];
b1[0x06] = samples[0x06] + samples[0x19];
b1[0x19] = (samples[0x06] - samples[0x19]) * costab[0x6];
b1[0x07] = samples[0x07] + samples[0x18];
b1[0x18] = (samples[0x07] - samples[0x18]) * costab[0x7];
b1[0x08] = samples[0x08] + samples[0x17];
b1[0x17] = (samples[0x08] - samples[0x17]) * costab[0x8];
b1[0x09] = samples[0x09] + samples[0x16];
b1[0x16] = (samples[0x09] - samples[0x16]) * costab[0x9];
b1[0x0A] = samples[0x0A] + samples[0x15];
b1[0x15] = (samples[0x0A] - samples[0x15]) * costab[0xA];
b1[0x0B] = samples[0x0B] + samples[0x14];
b1[0x14] = (samples[0x0B] - samples[0x14]) * costab[0xB];
b1[0x0C] = samples[0x0C] + samples[0x13];
b1[0x13] = (samples[0x0C] - samples[0x13]) * costab[0xC];
b1[0x0D] = samples[0x0D] + samples[0x12];
b1[0x12] = (samples[0x0D] - samples[0x12]) * costab[0xD];
b1[0x0E] = samples[0x0E] + samples[0x11];
b1[0x11] = (samples[0x0E] - samples[0x11]) * costab[0xE];
b1[0x0F] = samples[0x0F] + samples[0x10];
b1[0x10] = (samples[0x0F] - samples[0x10]) * costab[0xF];
}
{
real *costab = pnts[1];
b2[0x00] = b1[0x00] + b1[0x0F];
b2[0x0F] = (b1[0x00] - b1[0x0F]) * costab[0];
b2[0x01] = b1[0x01] + b1[0x0E];
b2[0x0E] = (b1[0x01] - b1[0x0E]) * costab[1];
b2[0x02] = b1[0x02] + b1[0x0D];
b2[0x0D] = (b1[0x02] - b1[0x0D]) * costab[2];
b2[0x03] = b1[0x03] + b1[0x0C];
b2[0x0C] = (b1[0x03] - b1[0x0C]) * costab[3];
b2[0x04] = b1[0x04] + b1[0x0B];
b2[0x0B] = (b1[0x04] - b1[0x0B]) * costab[4];
b2[0x05] = b1[0x05] + b1[0x0A];
b2[0x0A] = (b1[0x05] - b1[0x0A]) * costab[5];
b2[0x06] = b1[0x06] + b1[0x09];
b2[0x09] = (b1[0x06] - b1[0x09]) * costab[6];
b2[0x07] = b1[0x07] + b1[0x08];
b2[0x08] = (b1[0x07] - b1[0x08]) * costab[7];
b2[0x10] = b1[0x10] + b1[0x1F];
b2[0x1F] = (b1[0x1F] - b1[0x10]) * costab[0];
b2[0x11] = b1[0x11] + b1[0x1E];
b2[0x1E] = (b1[0x1E] - b1[0x11]) * costab[1];
b2[0x12] = b1[0x12] + b1[0x1D];
b2[0x1D] = (b1[0x1D] - b1[0x12]) * costab[2];
b2[0x13] = b1[0x13] + b1[0x1C];
b2[0x1C] = (b1[0x1C] - b1[0x13]) * costab[3];
b2[0x14] = b1[0x14] + b1[0x1B];
b2[0x1B] = (b1[0x1B] - b1[0x14]) * costab[4];
b2[0x15] = b1[0x15] + b1[0x1A];
b2[0x1A] = (b1[0x1A] - b1[0x15]) * costab[5];
b2[0x16] = b1[0x16] + b1[0x19];
b2[0x19] = (b1[0x19] - b1[0x16]) * costab[6];
b2[0x17] = b1[0x17] + b1[0x18];
b2[0x18] = (b1[0x18] - b1[0x17]) * costab[7];
}
{
real *costab = pnts[2];
b1[0x00] = b2[0x00] + b2[0x07];
b1[0x07] = (b2[0x00] - b2[0x07]) * costab[0];
b1[0x01] = b2[0x01] + b2[0x06];
b1[0x06] = (b2[0x01] - b2[0x06]) * costab[1];
b1[0x02] = b2[0x02] + b2[0x05];
b1[0x05] = (b2[0x02] - b2[0x05]) * costab[2];
b1[0x03] = b2[0x03] + b2[0x04];
b1[0x04] = (b2[0x03] - b2[0x04]) * costab[3];
b1[0x08] = b2[0x08] + b2[0x0F];
b1[0x0F] = (b2[0x0F] - b2[0x08]) * costab[0];
b1[0x09] = b2[0x09] + b2[0x0E];
b1[0x0E] = (b2[0x0E] - b2[0x09]) * costab[1];
b1[0x0A] = b2[0x0A] + b2[0x0D];
b1[0x0D] = (b2[0x0D] - b2[0x0A]) * costab[2];
b1[0x0B] = b2[0x0B] + b2[0x0C];
b1[0x0C] = (b2[0x0C] - b2[0x0B]) * costab[3];
b1[0x10] = b2[0x10] + b2[0x17];
b1[0x17] = (b2[0x10] - b2[0x17]) * costab[0];
b1[0x11] = b2[0x11] + b2[0x16];
b1[0x16] = (b2[0x11] - b2[0x16]) * costab[1];
b1[0x12] = b2[0x12] + b2[0x15];
b1[0x15] = (b2[0x12] - b2[0x15]) * costab[2];
b1[0x13] = b2[0x13] + b2[0x14];
b1[0x14] = (b2[0x13] - b2[0x14]) * costab[3];
b1[0x18] = b2[0x18] + b2[0x1F];
b1[0x1F] = (b2[0x1F] - b2[0x18]) * costab[0];
b1[0x19] = b2[0x19] + b2[0x1E];
b1[0x1E] = (b2[0x1E] - b2[0x19]) * costab[1];
b1[0x1A] = b2[0x1A] + b2[0x1D];
b1[0x1D] = (b2[0x1D] - b2[0x1A]) * costab[2];
b1[0x1B] = b2[0x1B] + b2[0x1C];
b1[0x1C] = (b2[0x1C] - b2[0x1B]) * costab[3];
}
{
real const cos0 = pnts[3][0];
real const cos1 = pnts[3][1];
b2[0x00] = b1[0x00] + b1[0x03];
b2[0x03] = (b1[0x00] - b1[0x03]) * cos0;
b2[0x01] = b1[0x01] + b1[0x02];
b2[0x02] = (b1[0x01] - b1[0x02]) * cos1;
b2[0x04] = b1[0x04] + b1[0x07];
b2[0x07] = (b1[0x07] - b1[0x04]) * cos0;
b2[0x05] = b1[0x05] + b1[0x06];
b2[0x06] = (b1[0x06] - b1[0x05]) * cos1;
b2[0x08] = b1[0x08] + b1[0x0B];
b2[0x0B] = (b1[0x08] - b1[0x0B]) * cos0;
b2[0x09] = b1[0x09] + b1[0x0A];
b2[0x0A] = (b1[0x09] - b1[0x0A]) * cos1;
b2[0x0C] = b1[0x0C] + b1[0x0F];
b2[0x0F] = (b1[0x0F] - b1[0x0C]) * cos0;
b2[0x0D] = b1[0x0D] + b1[0x0E];
b2[0x0E] = (b1[0x0E] - b1[0x0D]) * cos1;
b2[0x10] = b1[0x10] + b1[0x13];
b2[0x13] = (b1[0x10] - b1[0x13]) * cos0;
b2[0x11] = b1[0x11] + b1[0x12];
b2[0x12] = (b1[0x11] - b1[0x12]) * cos1;
b2[0x14] = b1[0x14] + b1[0x17];
b2[0x17] = (b1[0x17] - b1[0x14]) * cos0;
b2[0x15] = b1[0x15] + b1[0x16];
b2[0x16] = (b1[0x16] - b1[0x15]) * cos1;
b2[0x18] = b1[0x18] + b1[0x1B];
b2[0x1B] = (b1[0x18] - b1[0x1B]) * cos0;
b2[0x19] = b1[0x19] + b1[0x1A];
b2[0x1A] = (b1[0x19] - b1[0x1A]) * cos1;
b2[0x1C] = b1[0x1C] + b1[0x1F];
b2[0x1F] = (b1[0x1F] - b1[0x1C]) * cos0;
b2[0x1D] = b1[0x1D] + b1[0x1E];
b2[0x1E] = (b1[0x1E] - b1[0x1D]) * cos1;
}
{
real const cos0 = pnts[4][0];
b1[0x00] = b2[0x00] + b2[0x01];
b1[0x01] = (b2[0x00] - b2[0x01]) * cos0;
b1[0x02] = b2[0x02] + b2[0x03];
b1[0x03] = (b2[0x03] - b2[0x02]) * cos0;
b1[0x02] += b1[0x03];
b1[0x04] = b2[0x04] + b2[0x05];
b1[0x05] = (b2[0x04] - b2[0x05]) * cos0;
b1[0x06] = b2[0x06] + b2[0x07];
b1[0x07] = (b2[0x07] - b2[0x06]) * cos0;
b1[0x06] += b1[0x07];
b1[0x04] += b1[0x06];
b1[0x06] += b1[0x05];
b1[0x05] += b1[0x07];
b1[0x08] = b2[0x08] + b2[0x09];
b1[0x09] = (b2[0x08] - b2[0x09]) * cos0;
b1[0x0A] = b2[0x0A] + b2[0x0B];
b1[0x0B] = (b2[0x0B] - b2[0x0A]) * cos0;
b1[0x0A] += b1[0x0B];
b1[0x0C] = b2[0x0C] + b2[0x0D];
b1[0x0D] = (b2[0x0C] - b2[0x0D]) * cos0;
b1[0x0E] = b2[0x0E] + b2[0x0F];
b1[0x0F] = (b2[0x0F] - b2[0x0E]) * cos0;
b1[0x0E] += b1[0x0F];
b1[0x0C] += b1[0x0E];
b1[0x0E] += b1[0x0D];
b1[0x0D] += b1[0x0F];
b1[0x10] = b2[0x10] + b2[0x11];
b1[0x11] = (b2[0x10] - b2[0x11]) * cos0;
b1[0x12] = b2[0x12] + b2[0x13];
b1[0x13] = (b2[0x13] - b2[0x12]) * cos0;
b1[0x12] += b1[0x13];
b1[0x14] = b2[0x14] + b2[0x15];
b1[0x15] = (b2[0x14] - b2[0x15]) * cos0;
b1[0x16] = b2[0x16] + b2[0x17];
b1[0x17] = (b2[0x17] - b2[0x16]) * cos0;
b1[0x16] += b1[0x17];
b1[0x14] += b1[0x16];
b1[0x16] += b1[0x15];
b1[0x15] += b1[0x17];
b1[0x18] = b2[0x18] + b2[0x19];
b1[0x19] = (b2[0x18] - b2[0x19]) * cos0;
b1[0x1A] = b2[0x1A] + b2[0x1B];
b1[0x1B] = (b2[0x1B] - b2[0x1A]) * cos0;
b1[0x1A] += b1[0x1B];
b1[0x1C] = b2[0x1C] + b2[0x1D];
b1[0x1D] = (b2[0x1C] - b2[0x1D]) * cos0;
b1[0x1E] = b2[0x1E] + b2[0x1F];
b1[0x1F] = (b2[0x1F] - b2[0x1E]) * cos0;
b1[0x1E] += b1[0x1F];
b1[0x1C] += b1[0x1E];
b1[0x1E] += b1[0x1D];
b1[0x1D] += b1[0x1F];
}
out0[0x10 * 16] = b1[0x00];
out0[0x10 * 12] = b1[0x04];
out0[0x10 * 8] = b1[0x02];
out0[0x10 * 4] = b1[0x06];
out0[0x10 * 0] = b1[0x01];
out1[0x10 * 0] = b1[0x01];
out1[0x10 * 4] = b1[0x05];
out1[0x10 * 8] = b1[0x03];
out1[0x10 * 12] = b1[0x07];
b1[0x08] += b1[0x0C];
out0[0x10 * 14] = b1[0x08];
b1[0x0C] += b1[0x0a];
out0[0x10 * 10] = b1[0x0C];
b1[0x0A] += b1[0x0E];
out0[0x10 * 6] = b1[0x0A];
b1[0x0E] += b1[0x09];
out0[0x10 * 2] = b1[0x0E];
b1[0x09] += b1[0x0D];
out1[0x10 * 2] = b1[0x09];
b1[0x0D] += b1[0x0B];
out1[0x10 * 6] = b1[0x0D];
b1[0x0B] += b1[0x0F];
out1[0x10 * 10] = b1[0x0B];
out1[0x10 * 14] = b1[0x0F];
b1[0x18] += b1[0x1C];
out0[0x10 * 15] = b1[0x10] + b1[0x18];
out0[0x10 * 13] = b1[0x18] + b1[0x14];
b1[0x1C] += b1[0x1a];
out0[0x10 * 11] = b1[0x14] + b1[0x1C];
out0[0x10 * 9] = b1[0x1C] + b1[0x12];
b1[0x1A] += b1[0x1E];
out0[0x10 * 7] = b1[0x12] + b1[0x1A];
out0[0x10 * 5] = b1[0x1A] + b1[0x16];
b1[0x1E] += b1[0x19];
out0[0x10 * 3] = b1[0x16] + b1[0x1E];
out0[0x10 * 1] = b1[0x1E] + b1[0x11];
b1[0x19] += b1[0x1D];
out1[0x10 * 1] = b1[0x11] + b1[0x19];
out1[0x10 * 3] = b1[0x19] + b1[0x15];
b1[0x1D] += b1[0x1B];
out1[0x10 * 5] = b1[0x15] + b1[0x1D];
out1[0x10 * 7] = b1[0x1D] + b1[0x13];
b1[0x1B] += b1[0x1F];
out1[0x10 * 9] = b1[0x13] + b1[0x1B];
out1[0x10 * 11] = b1[0x1B] + b1[0x17];
out1[0x10 * 13] = b1[0x17] + b1[0x1F];
out1[0x10 * 15] = b1[0x1F];
}
/*
* the call via dct64 is a trick to force GCC to use
* (new) registers for the b1,b2 pointer to the bufs[xx] field
*/
void
dct64(real * a, real * b, real * c)
{
real bufs[0x40];
dct64_1(a, b, bufs, bufs + 0x20, c);
}
Reference in New Issue View Git Blame Copy Permalink