1 files changed, 0 insertions, 167 deletions
diff --git a/components/music/dct64.c b/components/music/dct64.c
deleted file mode 100644
index dad147619..000000000
--- a/components/music/dct64.c
+++ /dev/null
@@ -1,167 +0,0 @@
-
-/*
- * 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 "mpg123.h"
-
-void mpg123_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 = mpg123_pnts[0] + 16;
-		b2 = b1 + 32;
-
-		for (i = 15; i >= 0; i--)
-			*bs++ = (*b1++ + *--b2);
-		for (i = 15; i >= 0; i--)
-			*bs++ = (*--b2 - *b1++) * *--costab;
-
-		b1 = bufs;
-		costab = mpg123_pnts[1] + 8;
-		b2 = b1 + 16;
-
-		{
-			for (i = 7; i >= 0; i--)
-				*bs++ = (*b1++ + *--b2);
-			for (i = 7; i >= 0; i--)
-				*bs++ = (*--b2 - *b1++) * *--costab;
-			b2 += 32;
-			costab += 8;
-			for (i = 7; i >= 0; i--)
-				*bs++ = (*b1++ + *--b2);
-			for (i = 7; i >= 0; i--)
-				*bs++ = (*b1++ - *--b2) * *--costab;
-			b2 += 32;
-		}
-
-		bs = bufs;
-		costab = mpg123_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++ = (*--b2 - *b1++) * costab[i];
-			b2 += 16;
-			for (i = 3; i >= 0; i--)
-				*bs++ = (*b1++ + *--b2);
-			for (i = 3; i >= 0; i--)
-				*bs++ = (*b1++ - *--b2) * costab[i];
-			b2 += 16;
-		}
-
-		b1 = bufs;
-		costab = mpg123_pnts[3];
-		b2 = b1 + 4;
-
-		for (j = 4; j; j--)
-		{
-			*bs++ = (*b1++ + *--b2);
-			*bs++ = (*b1++ + *--b2);
-			*bs++ = (*--b2 - *b1++) * costab[1];
-			*bs++ = (*--b2 - *b1++) * costab[0];
-			b2 += 8;
-			*bs++ = (*b1++ + *--b2);
-			*bs++ = (*b1++ + *--b2);
-			*bs++ = (*b1++ - *--b2) * costab[1];
-			*bs++ = (*b1++ - *--b2) * costab[0];
-			b2 += 8;
-		}
-		bs = bufs;
-		costab = mpg123_pnts[4];
-
-		for (j = 8; j; j--)
-		{
-			real v0, v1;
-
-			v0 = *b1++;
-			v1 = *b1++;
-			*bs++ = (v0 + v1);
-			*bs++ = (v0 - v1) * (*costab);
-			v0 = *b1++;
-			v1 = *b1++;
-			*bs++ = (v0 + v1);
-			*bs++ = (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] = bufs[0];
-	out0[0x10 * 15] = bufs[16 + 0] + bufs[16 + 8];
-	out0[0x10 * 14] = bufs[8];
-	out0[0x10 * 13] = bufs[16 + 8] + bufs[16 + 4];
-	out0[0x10 * 12] = bufs[4];
-	out0[0x10 * 11] = bufs[16 + 4] + bufs[16 + 12];
-	out0[0x10 * 10] = bufs[12];
-	out0[0x10 * 9] = bufs[16 + 12] + bufs[16 + 2];
-	out0[0x10 * 8] = bufs[2];
-	out0[0x10 * 7] = bufs[16 + 2] + bufs[16 + 10];
-	out0[0x10 * 6] = bufs[10];
-	out0[0x10 * 5] = bufs[16 + 10] + bufs[16 + 6];
-	out0[0x10 * 4] = bufs[6];
-	out0[0x10 * 3] = bufs[16 + 6] + bufs[16 + 14];
-	out0[0x10 * 2] = bufs[14];
-	out0[0x10 * 1] = bufs[16 + 14] + bufs[16 + 1];
-	out0[0x10 * 0] = bufs[1];
-
-	out1[0x10 * 0] = bufs[1];
-	out1[0x10 * 1] = bufs[16 + 1] + bufs[16 + 9];
-	out1[0x10 * 2] = bufs[9];
-	out1[0x10 * 3] = bufs[16 + 9] + bufs[16 + 5];
-	out1[0x10 * 4] = bufs[5];
-	out1[0x10 * 5] = bufs[16 + 5] + bufs[16 + 13];
-	out1[0x10 * 6] = bufs[13];
-	out1[0x10 * 7] = bufs[16 + 13] + bufs[16 + 3];
-	out1[0x10 * 8] = bufs[3];
-	out1[0x10 * 9] = bufs[16 + 3] + bufs[16 + 11];
-	out1[0x10 * 10] = bufs[11];
-	out1[0x10 * 11] = bufs[16 + 11] + bufs[16 + 7];
-	out1[0x10 * 12] = bufs[7];
-	out1[0x10 * 13] = bufs[16 + 7] + bufs[16 + 15];
-	out1[0x10 * 14] = bufs[15];
-	out1[0x10 * 15] = bufs[16 + 15];
-
-}