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[reactos.git] / reactos / lib / 3rdparty / libmpg123 / dct64.c

diff --git a/reactos/lib/3rdparty/libmpg123/dct64.c b/reactos/lib/3rdparty/libmpg123/dct64.c
deleted file mode 100644 (file)
index a25047a..0000000
--- a/reactos/lib/3rdparty/libmpg123/dct64.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
-       dct64.c: DCT64, the plain C version
-
-       copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
-       see COPYING and AUTHORS files in distribution or http://mpg123.org
-       initially written by Michael Hipp
-*/
-
-/*
- * Discrete Cosine Tansform (DCT) for subband synthesis
- *
- * -funroll-loops (for gcc) will remove the loops for better performance
- * using loops in the source-code enhances readabillity
- *
- *
- * TODO: write an optimized version for the down-sampling modes
- *       (in these modes the bands 16-31 (2:1) or 8-31 (4:1) are zero 
- */
-
-#include "mpg123lib_intern.h"
-
-void dct64(real *out0,real *out1,real *samples)
-{
-  real bufs[64];
-
- {
-  register int i,j;
-  register real *b1,*b2,*bs,*costab;
-
-  b1 = samples;
-  bs = bufs;
-  costab = pnts[0]+16;
-  b2 = b1 + 32;
-
-  for(i=15;i>=0;i--)
-    *bs++ = (*b1++ + *--b2); 
-  for(i=15;i>=0;i--)
-    *bs++ = REAL_MUL((*--b2 - *b1++), *--costab);
-
-  b1 = bufs;
-  costab = pnts[1]+8;
-  b2 = b1 + 16;
-
-  {
-    for(i=7;i>=0;i--)
-      *bs++ = (*b1++ + *--b2); 
-    for(i=7;i>=0;i--)
-      *bs++ = REAL_MUL((*--b2 - *b1++), *--costab);
-    b2 += 32;
-    costab += 8;
-    for(i=7;i>=0;i--)
-      *bs++ = (*b1++ + *--b2); 
-    for(i=7;i>=0;i--)
-      *bs++ = REAL_MUL((*b1++ - *--b2), *--costab);
-    b2 += 32;
-  }
-
-  bs = bufs;
-  costab = pnts[2];
-  b2 = b1 + 8;
-
-  for(j=2;j;j--)
-  {
-    for(i=3;i>=0;i--)
-      *bs++ = (*b1++ + *--b2); 
-    for(i=3;i>=0;i--)
-      *bs++ = REAL_MUL((*--b2 - *b1++), costab[i]);
-    b2 += 16;
-    for(i=3;i>=0;i--)
-      *bs++ = (*b1++ + *--b2); 
-    for(i=3;i>=0;i--)
-      *bs++ = REAL_MUL((*b1++ - *--b2), costab[i]);
-    b2 += 16;
-  }
-
-  b1 = bufs;
-  costab = pnts[3];
-  b2 = b1 + 4;
-
-  for(j=4;j;j--)
-  {
-    *bs++ = (*b1++ + *--b2); 
-    *bs++ = (*b1++ + *--b2);
-    *bs++ = REAL_MUL((*--b2 - *b1++), costab[1]);
-    *bs++ = REAL_MUL((*--b2 - *b1++), costab[0]);
-    b2 += 8;
-    *bs++ = (*b1++ + *--b2); 
-    *bs++ = (*b1++ + *--b2);
-    *bs++ = REAL_MUL((*b1++ - *--b2), costab[1]);
-    *bs++ = REAL_MUL((*b1++ - *--b2), costab[0]);
-    b2 += 8;
-  }
-  bs = bufs;
-  costab = pnts[4];
-
-  for(j=8;j;j--)
-  {
-    real v0,v1;
-    v0=*b1++; v1 = *b1++;
-    *bs++ = (v0 + v1);
-    *bs++ = REAL_MUL((v0 - v1), (*costab));
-    v0=*b1++; v1 = *b1++;
-    *bs++ = (v0 + v1);
-    *bs++ = REAL_MUL((v1 - v0), (*costab));
-  }
-
- }
-
-
- {
-  register real *b1;
-  register int i;
-
-  for(b1=bufs,i=8;i;i--,b1+=4)
-    b1[2] += b1[3];
-
-  for(b1=bufs,i=4;i;i--,b1+=8)
-  {
-    b1[4] += b1[6];
-    b1[6] += b1[5];
-    b1[5] += b1[7];
-  }
-
-  for(b1=bufs,i=2;i;i--,b1+=16)
-  {
-    b1[8]  += b1[12];
-    b1[12] += b1[10];
-    b1[10] += b1[14];
-    b1[14] += b1[9];
-    b1[9]  += b1[13];
-    b1[13] += b1[11];
-    b1[11] += b1[15];
-  }
- }
-
-
-  out0[0x10*16] = REAL_SCALE_DCT64(bufs[0]);
-  out0[0x10*15] = REAL_SCALE_DCT64(bufs[16+0]  + bufs[16+8]);
-  out0[0x10*14] = REAL_SCALE_DCT64(bufs[8]);
-  out0[0x10*13] = REAL_SCALE_DCT64(bufs[16+8]  + bufs[16+4]);
-  out0[0x10*12] = REAL_SCALE_DCT64(bufs[4]);
-  out0[0x10*11] = REAL_SCALE_DCT64(bufs[16+4]  + bufs[16+12]);
-  out0[0x10*10] = REAL_SCALE_DCT64(bufs[12]);
-  out0[0x10* 9] = REAL_SCALE_DCT64(bufs[16+12] + bufs[16+2]);
-  out0[0x10* 8] = REAL_SCALE_DCT64(bufs[2]);
-  out0[0x10* 7] = REAL_SCALE_DCT64(bufs[16+2]  + bufs[16+10]);
-  out0[0x10* 6] = REAL_SCALE_DCT64(bufs[10]);
-  out0[0x10* 5] = REAL_SCALE_DCT64(bufs[16+10] + bufs[16+6]);
-  out0[0x10* 4] = REAL_SCALE_DCT64(bufs[6]);
-  out0[0x10* 3] = REAL_SCALE_DCT64(bufs[16+6]  + bufs[16+14]);
-  out0[0x10* 2] = REAL_SCALE_DCT64(bufs[14]);
-  out0[0x10* 1] = REAL_SCALE_DCT64(bufs[16+14] + bufs[16+1]);
-  out0[0x10* 0] = REAL_SCALE_DCT64(bufs[1]);
-
-  out1[0x10* 0] = REAL_SCALE_DCT64(bufs[1]);
-  out1[0x10* 1] = REAL_SCALE_DCT64(bufs[16+1]  + bufs[16+9]);
-  out1[0x10* 2] = REAL_SCALE_DCT64(bufs[9]);
-  out1[0x10* 3] = REAL_SCALE_DCT64(bufs[16+9]  + bufs[16+5]);
-  out1[0x10* 4] = REAL_SCALE_DCT64(bufs[5]);
-  out1[0x10* 5] = REAL_SCALE_DCT64(bufs[16+5]  + bufs[16+13]);
-  out1[0x10* 6] = REAL_SCALE_DCT64(bufs[13]);
-  out1[0x10* 7] = REAL_SCALE_DCT64(bufs[16+13] + bufs[16+3]);
-  out1[0x10* 8] = REAL_SCALE_DCT64(bufs[3]);
-  out1[0x10* 9] = REAL_SCALE_DCT64(bufs[16+3]  + bufs[16+11]);
-  out1[0x10*10] = REAL_SCALE_DCT64(bufs[11]);
-  out1[0x10*11] = REAL_SCALE_DCT64(bufs[16+11] + bufs[16+7]);
-  out1[0x10*12] = REAL_SCALE_DCT64(bufs[7]);
-  out1[0x10*13] = REAL_SCALE_DCT64(bufs[16+7]  + bufs[16+15]);
-  out1[0x10*14] = REAL_SCALE_DCT64(bufs[15]);
-  out1[0x10*15] = REAL_SCALE_DCT64(bufs[16+15]);
-
-}
-
-