--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/decoders/libmpg123/decode_i386.c	Fri Jan 30 02:44:47 2009 -0500
@@ -0,0 +1,295 @@
+/*
+	decode_i386.c: decode for i386 (really faster?)
+
+	copyright 1995-2006 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
+
+	slighlty optimized for machines without autoincrement/decrement.
+	The performance is highly compiler dependend. Maybe
+	the decode.c version for 'normal' processor may be faster
+	even for Intel processors.
+*/
+
+#include "mpg123lib_intern.h"
+
+int synth_1to1_8bit_i386(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+  short samples_tmp[64];
+  short *tmp1 = samples_tmp + channel;
+  int i,ret;
+
+  unsigned char *samples = fr->buffer.data;
+  int pnt = fr->buffer.fill;
+  fr->buffer.data = (unsigned char*) samples_tmp;
+  fr->buffer.fill = 0;
+  ret = opt_synth_1to1(fr)(bandPtr, channel, fr , 0);
+  fr->buffer.data = samples;
+
+  samples += channel + pnt;
+  for(i=0;i<32;i++) {
+    *samples = fr->conv16to8[*tmp1>>AUSHIFT];
+    samples += 2;
+    tmp1 += 2;
+  }
+  fr->buffer.fill = pnt + (final ? 64 : 0 );
+
+  return ret;
+}
+
+int synth_1to1_8bit_mono_i386(real *bandPtr, mpg123_handle *fr)
+{
+  short samples_tmp[64];
+  short *tmp1 = samples_tmp;
+  int i,ret;
+ 
+  unsigned char *samples = fr->buffer.data;
+  int pnt = fr->buffer.fill;
+  fr->buffer.data = (unsigned char*) samples_tmp;
+  fr->buffer.fill = 0;
+  ret = opt_synth_1to1(fr)(bandPtr, 0, fr, 0);
+  fr->buffer.data = samples;
+
+  samples += pnt;
+  for(i=0;i<32;i++) {
+    *samples++ = fr->conv16to8[*tmp1>>AUSHIFT];
+    tmp1+=2;
+  }
+  fr->buffer.fill = pnt + 32;
+
+  return ret;
+}
+
+int synth_1to1_8bit_mono2stereo_i386(real *bandPtr, mpg123_handle *fr)
+{
+  short samples_tmp[64];
+  short *tmp1 = samples_tmp;
+  int i,ret;
+
+  unsigned char *samples = fr->buffer.data;
+  int pnt = fr->buffer.fill;
+  fr->buffer.data = (unsigned char*) samples_tmp;
+  fr->buffer.fill = 0;
+  ret = opt_synth_1to1(fr)(bandPtr, 0, fr, 0);
+  fr->buffer.data = samples;
+
+  samples += pnt;
+  for(i=0;i<32;i++) {
+    *samples++ = fr->conv16to8[*tmp1>>AUSHIFT];
+    *samples++ = fr->conv16to8[*tmp1>>AUSHIFT];
+    tmp1 += 2;
+  }
+  fr->buffer.fill = pnt + 64;
+
+  return ret;
+}
+
+int synth_1to1_mono_i386(real *bandPtr, mpg123_handle *fr)
+{
+  short samples_tmp[64];
+  short *tmp1 = samples_tmp;
+  int i,ret;
+
+  unsigned char *samples = fr->buffer.data;
+  int pnt = fr->buffer.fill;
+  fr->buffer.data = (unsigned char*) samples_tmp;
+  fr->buffer.fill = 0;
+  ret = opt_synth_1to1(fr)(bandPtr, 0, fr, 0);
+  fr->buffer.data = samples;
+
+  samples += pnt;
+  for(i=0;i<32;i++) {
+    *( (short *) samples) = *tmp1;
+    samples += 2;
+    tmp1 += 2;
+  }
+  fr->buffer.fill = pnt + 64;
+
+  return ret;
+}
+
+
+int synth_1to1_mono2stereo_i386(real *bandPtr, mpg123_handle *fr)
+{
+  int i,ret;
+  unsigned char *samples = fr->buffer.data;
+
+  ret = opt_synth_1to1(fr)(bandPtr, 0, fr, 1);
+  samples += fr->buffer.fill - 128;
+
+  for(i=0;i<32;i++) {
+    ((short *)samples)[1] = ((short *)samples)[0];
+    samples+=4;
+  }
+
+  return ret;
+}
+
+/* needed for i386, i486 */
+#ifdef OPT_I386_SYNTH
+int synth_1to1_i386(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+  static const int step = 2;
+  short *samples = (short *) (fr->buffer.data + fr->buffer.fill);
+
+  real *b0, **buf;
+  int clip = 0; 
+  int bo1;
+
+  if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+
+  if(!channel) {
+    fr->bo[0]--;
+    fr->bo[0] &= 0xf;
+    buf = fr->real_buffs[0];
+  }
+  else {
+    samples++;
+    buf = fr->real_buffs[1];
+  }
+
+  if(fr->bo[0] & 0x1) {
+    b0 = buf[0];
+    bo1 = fr->bo[0];
+    dct64_i386(buf[1]+((fr->bo[0]+1)&0xf),buf[0]+fr->bo[0],bandPtr);
+  }
+  else {
+    b0 = buf[1];
+    bo1 = fr->bo[0]+1;
+    dct64_i386(buf[0]+fr->bo[0],buf[1]+fr->bo[0]+1,bandPtr);
+  }
+  
+  {
+    register int j;
+    real *window = opt_decwin(fr) + 16 - bo1;
+
+    for (j=16;j;j--,b0+=0x10,window+=0x20,samples+=step)
+    {
+      real sum;
+      sum  = window[0x0] * b0[0x0];
+      sum -= window[0x1] * b0[0x1];
+      sum += window[0x2] * b0[0x2];
+      sum -= window[0x3] * b0[0x3];
+      sum += window[0x4] * b0[0x4];
+      sum -= window[0x5] * b0[0x5];
+      sum += window[0x6] * b0[0x6];
+      sum -= window[0x7] * b0[0x7];
+      sum += window[0x8] * b0[0x8];
+      sum -= window[0x9] * b0[0x9];
+      sum += window[0xA] * b0[0xA];
+      sum -= window[0xB] * b0[0xB];
+      sum += window[0xC] * b0[0xC];
+      sum -= window[0xD] * b0[0xD];
+      sum += window[0xE] * b0[0xE];
+      sum -= window[0xF] * b0[0xF];
+
+      WRITE_SAMPLE(samples,sum,clip);
+    }
+
+    {
+      real sum;
+      sum  = window[0x0] * b0[0x0];
+      sum += window[0x2] * b0[0x2];
+      sum += window[0x4] * b0[0x4];
+      sum += window[0x6] * b0[0x6];
+      sum += window[0x8] * b0[0x8];
+      sum += window[0xA] * b0[0xA];
+      sum += window[0xC] * b0[0xC];
+      sum += window[0xE] * b0[0xE];
+      WRITE_SAMPLE(samples,sum,clip);
+      b0-=0x10,window-=0x20,samples+=step;
+    }
+    window += bo1<<1;
+
+    for (j=15;j;j--,b0-=0x10,window-=0x20,samples+=step)
+    {
+      real sum;
+      sum = -window[-0x1] * b0[0x0];
+      sum -= window[-0x2] * b0[0x1];
+      sum -= window[-0x3] * b0[0x2];
+      sum -= window[-0x4] * b0[0x3];
+      sum -= window[-0x5] * b0[0x4];
+      sum -= window[-0x6] * b0[0x5];
+      sum -= window[-0x7] * b0[0x6];
+      sum -= window[-0x8] * b0[0x7];
+      sum -= window[-0x9] * b0[0x8];
+      sum -= window[-0xA] * b0[0x9];
+      sum -= window[-0xB] * b0[0xA];
+      sum -= window[-0xC] * b0[0xB];
+      sum -= window[-0xD] * b0[0xC];
+      sum -= window[-0xE] * b0[0xD];
+      sum -= window[-0xF] * b0[0xE];
+      sum -= window[-0x0] * b0[0xF];
+
+      WRITE_SAMPLE(samples,sum,clip);
+    }
+  }
+  if(final) fr->buffer.fill += 128;
+
+  return clip;
+}
+#endif
+
+#ifdef OPT_PENTIUM
+int synth_1to1_i586(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+	int ret;
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+
+	/* this is in asm, can be dither or not */
+	/* uh, is this return from pointer correct? */ 
+	ret = (int) opt_synth_1to1_i586_asm(fr)(bandPtr, channel, fr->buffer.data+fr->buffer.fill, fr->rawbuffs, fr->bo, fr->decwin);
+	if(final) fr->buffer.fill += 128;
+	return ret;
+}
+#endif
+
+#ifdef OPT_3DNOW
+int synth_1to1_3dnow(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+	int ret;
+
+	if(fr->have_eq_settings) do_equalizer_3dnow(bandPtr,channel,fr->equalizer);
+
+	/* this is in asm, can be dither or not */
+	/* uh, is this return from pointer correct? */ 
+	ret = (int) synth_1to1_3dnow_asm(bandPtr, channel, fr->buffer.data+fr->buffer.fill, fr->rawbuffs, fr->bo, fr->decwin);
+	if(final) fr->buffer.fill += 128;
+	return ret;
+}
+#endif
+
+#ifdef OPT_MMX
+/* wrapper for da interface */
+int synth_1to1_mmx(real *bandPtr, int channel, mpg123_handle *fr, int final)
+{
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+
+	/* in asm */
+	synth_1to1_MMX(bandPtr, channel, (short*) (fr->buffer.data+fr->buffer.fill), (short *) fr->rawbuffs, fr->bo, fr->decwins); 
+	if(final) fr->buffer.fill += 128;
+	return 0;
+}
+#endif
+
+#ifdef OPT_SSE
+int synth_1to1_sse(real *bandPtr, int channel, mpg123_handle *fr, int final)
+{
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+
+	synth_1to1_sse_asm(bandPtr, channel, (short*) (fr->buffer.data+fr->buffer.fill), (short *) fr->rawbuffs, fr->bo, fr->decwins); 
+	if(final) fr->buffer.fill += 128;
+	return 0;
+}
+#endif
+
+#ifdef OPT_3DNOWEXT
+int synth_1to1_3dnowext(real *bandPtr, int channel, mpg123_handle *fr, int final)
+{
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+
+	synth_1to1_3dnowext_asm(bandPtr, channel, (short*) (fr->buffer.data+fr->buffer.fill), (short *) fr->rawbuffs, fr->bo, fr->decwins); 
+	if(final) fr->buffer.fill += 128;
+	return 0;
+}
+#endif