/*

	decode.c: decoding samples...

	copyright 1995-2009 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

	altivec optimization by tmkk

*/

#include "mpg123lib_intern.h"

#ifndef __APPLE__

#include <altivec.h>

#endif

/* A macro for normal synth functions */

#define SYNTH_ALTIVEC(B0STEP) \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0); \

	 \

	vsum = vec_madd(v1,v6,vzero); \

	vsum = vec_madd(v2,v7,vsum); \

	vsum = vec_madd(v3,v8,vsum); \

	vsum = vec_madd(v4,v9,vsum); \

	 \

	window += 32; \

	b0 += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0); \

	 \

	vsum2 = vec_madd(v1,v6,vzero); \

	vsum2 = vec_madd(v2,v7,vsum2); \

	vsum2 = vec_madd(v3,v8,vsum2); \

	vsum2 = vec_madd(v4,v9,vsum2); \

	 \

	window += 32; \

	b0 += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0); \

	 \

	vsum3 = vec_madd(v1,v6,vzero); \

	vsum3 = vec_madd(v2,v7,vsum3); \

	vsum3 = vec_madd(v3,v8,vsum3); \

	vsum3 = vec_madd(v4,v9,vsum3); \

	 \

	window += 32; \

	b0 += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0); \

	 \

	vsum4 = vec_madd(v1,v6,vzero); \

	vsum4 = vec_madd(v2,v7,vsum4); \

	vsum4 = vec_madd(v3,v8,vsum4); \

	vsum4 = vec_madd(v4,v9,vsum4); \

	 \

	window += 32; \

	b0 += B0STEP; \

	 \

	v1 = vec_mergeh(vsum,vsum3); \

	v2 = vec_mergeh(vsum2,vsum4); \

	v3 = vec_mergel(vsum,vsum3); \

	v4 = vec_mergel(vsum2,vsum4); \

	v5 = vec_mergeh(v1,v2); \

	v6 = vec_mergel(v1,v2); \

	v7 = vec_mergeh(v3,v4); \

	v8 = vec_mergel(v3,v4);

/* A macro for stereo synth functions */

#define SYNTH_STEREO_ALTIVEC(B0STEP) \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0l); \

	v10 = vec_ld(0,b0r); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0l); \

	v11 = vec_ld(16,b0r); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0l); \

	v12 = vec_ld(32,b0r); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0l); \

	v13 = vec_ld(48,b0r); \

	 \

	vsum = vec_madd(v1,v6,vzero); \

	vsum5 = vec_madd(v1,v10,vzero); \

	vsum = vec_madd(v2,v7,vsum); \

	vsum5 = vec_madd(v2,v11,vsum5); \

	vsum = vec_madd(v3,v8,vsum); \

	vsum5 = vec_madd(v3,v12,vsum5); \

	vsum = vec_madd(v4,v9,vsum); \

	vsum5 = vec_madd(v4,v13,vsum5); \

	 \

	window += 32; \

	b0l += B0STEP; \

	b0r += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0l); \

	v10 = vec_ld(0,b0r); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0l); \

	v11 = vec_ld(16,b0r); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0l); \

	v12 = vec_ld(32,b0r); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0l); \

	v13 = vec_ld(48,b0r); \

	 \

	vsum2 = vec_madd(v1,v6,vzero); \

	vsum6 = vec_madd(v1,v10,vzero); \

	vsum2 = vec_madd(v2,v7,vsum2); \

	vsum6 = vec_madd(v2,v11,vsum6); \

	vsum2 = vec_madd(v3,v8,vsum2); \

	vsum6 = vec_madd(v3,v12,vsum6); \

	vsum2 = vec_madd(v4,v9,vsum2); \

	vsum6 = vec_madd(v4,v13,vsum6); \

	 \

	window += 32; \

	b0l += B0STEP; \

	b0r += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0l); \

	v10 = vec_ld(0,b0r); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0l); \

	v11 = vec_ld(16,b0r); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0l); \

	v12 = vec_ld(32,b0r); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0l); \

	v13 = vec_ld(48,b0r); \

	 \

	vsum3 = vec_madd(v1,v6,vzero); \

	vsum7 = vec_madd(v1,v10,vzero); \

	vsum3 = vec_madd(v2,v7,vsum3); \

	vsum7 = vec_madd(v2,v11,vsum7); \

	vsum3 = vec_madd(v3,v8,vsum3); \

	vsum7 = vec_madd(v3,v12,vsum7); \

	vsum3 = vec_madd(v4,v9,vsum3); \

	vsum7 = vec_madd(v4,v13,vsum7); \

	 \

	window += 32; \

	b0l += B0STEP; \

	b0r += B0STEP; \

	 \

	v1 = vec_ld(0,window); \

	v2 = vec_ld(16,window); \

	v3 = vec_ld(32,window); \

	v4 = vec_ld(48,window); \

	v5 = vec_ld(64,window); \

	v1 = vec_perm(v1,v2,vperm1); \

	v6 = vec_ld(0,b0l); \

	v10 = vec_ld(0,b0r); \

	v2 = vec_perm(v2,v3,vperm1); \

	v7 = vec_ld(16,b0l); \

	v11 = vec_ld(16,b0r); \

	v3 = vec_perm(v3,v4,vperm1); \

	v8 = vec_ld(32,b0l); \

	v12 = vec_ld(32,b0r); \

	v4 = vec_perm(v4,v5,vperm1); \

	v9 = vec_ld(48,b0l); \

	v13 = vec_ld(48,b0r); \

	 \

	vsum4 = vec_madd(v1,v6,vzero); \

	vsum8 = vec_madd(v1,v10,vzero); \

	vsum4 = vec_madd(v2,v7,vsum4); \

	vsum8 = vec_madd(v2,v11,vsum8); \

	vsum4 = vec_madd(v3,v8,vsum4); \

	vsum8 = vec_madd(v3,v12,vsum8); \

	vsum4 = vec_madd(v4,v9,vsum4); \

	vsum8 = vec_madd(v4,v13,vsum8); \

	 \

	window += 32; \

	b0l += B0STEP; \

	b0r += B0STEP; \

	 \

	v1 = vec_mergeh(vsum,vsum3); \

	v5 = vec_mergeh(vsum5,vsum7); \

	v2 = vec_mergeh(vsum2,vsum4); \

	v6 = vec_mergeh(vsum6,vsum8); \

	v3 = vec_mergel(vsum,vsum3); \

	v7 = vec_mergel(vsum5,vsum7); \

	v4 = vec_mergel(vsum2,vsum4); \

	v8 = vec_mergel(vsum6,vsum8); \

	vsum = vec_mergeh(v1,v2); \

	vsum5 = vec_mergeh(v5,v6); \

	vsum2 = vec_mergel(v1,v2); \

	vsum6 = vec_mergel(v5,v6); \

	vsum3 = vec_mergeh(v3,v4); \

	vsum7 = vec_mergeh(v7,v8); \

	vsum4 = vec_mergel(v3,v4); \

	vsum8 = vec_mergel(v7,v8);

int synth_1to1_altivec(real *bandPtr,int channel,mpg123_handle *fr, int final)

{

	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);

	real *b0, **buf;

	int clip; 

	int bo1;

#ifndef NO_EQUALIZER

	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);

#endif

	if(!channel)

	{

		fr->bo--;

		fr->bo &= 0xf;

		buf = fr->real_buffs[0];

	}

	else

	{

		samples++;

		buf = fr->real_buffs[1];

	}

	if(fr->bo & 0x1)

	{

		b0 = buf[0];

		bo1 = fr->bo;

		dct64_altivec(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_altivec(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	{

		register int j;

		real *window = fr->decwin + 16 - bo1;

		ALIGNED(16) int clip_tmp[4];

		vector float v1,v2,v3,v4,v5,v6,v7,v8,v9;

		vector unsigned char vperm1,vperm2,vperm3,vperm4;

		vector float vsum,vsum2,vsum3,vsum4,vmin,vmax,vzero;

		vector signed int vclip;

		vector signed short vsample1,vsample2;

		vector unsigned int vshift;

		vclip = vec_xor(vclip,vclip);

		vzero = vec_xor(vzero,vzero);

		vshift = vec_splat_u32(-1); /* 31 */

#ifdef __APPLE__

		vmax = (vector float)(32767.0f);

		vmin = (vector float)(-32768.0f);

		vperm4 = (vector unsigned char)(0,1,18,19,2,3,22,23,4,5,26,27,6,7,30,31);

#else

		vmax = (vector float){32767.0f,32767.0f,32767.0f,32767.0f};

		vmin = (vector float){-32768.0f,-32768.0f,-32768.0f,-32768.0f};

		vperm4 = (vector unsigned char){0,1,18,19,2,3,22,23,4,5,26,27,6,7,30,31};

#endif

		vperm1 = vec_lvsl(0,window);

		vperm2 = vec_lvsl(0,samples);

		vperm3 = vec_lvsr(0,samples);

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(16);

			vsum = vec_sub(v5,v6);

			v9 = vec_sub(v7,v8);

			vsum = vec_add(vsum,v9);

			v3 = vec_round(vsum);

			v3 = (vector float)vec_cts(v3,0);

			v1 = (vector float)vec_cmpgt(vsum,vmax);

			v2 = (vector float)vec_cmplt(vsum,vmin);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(15,samples);

			v3 = (vector float)vec_packs((vector signed int)v3,(vector signed int)v3);

			v4 = (vector float)vec_perm(vsample1,vsample2,vperm2);

			v5 = (vector float)vec_perm(v3,v4,vperm4);

			v6 = (vector float)vec_perm(vsample2,vsample1,vperm2);

			v7 = (vector float)vec_perm(v5,v6,vperm3);

			v8 = (vector float)vec_perm(v6,v5,vperm3);

			vec_st((vector signed short)v7,15,samples);

			vec_st((vector signed short)v8,0,samples);

			samples += 8;

			v1 = (vector float)vec_sr((vector unsigned int)v1, vshift);

			v2 = (vector float)vec_sr((vector unsigned int)v2, vshift);

			v1 = (vector float)vec_add((vector unsigned int)v1,(vector unsigned int)v2);

			vclip = vec_sums((vector signed int)v1,vclip);

		}

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(-16);

			vsum = vec_add(v5,v6);

			v9 = vec_add(v7,v8);

			vsum = vec_add(vsum,v9);

			v3 = vec_round(vsum);

			v3 = (vector float)vec_cts(v3,0);

			v1 = (vector float)vec_cmpgt(vsum,vmax);

			v2 = (vector float)vec_cmplt(vsum,vmin);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(15,samples);

			v3 = (vector float)vec_packs((vector signed int)v3,(vector signed int)v3);

			v4 = (vector float)vec_perm(vsample1,vsample2,vperm2);

			v5 = (vector float)vec_perm(v3,v4,vperm4);

			v6 = (vector float)vec_perm(vsample2,vsample1,vperm2);

			v7 = (vector float)vec_perm(v5,v6,vperm3);

			v8 = (vector float)vec_perm(v6,v5,vperm3);

			vec_st((vector signed short)v7,15,samples);

			vec_st((vector signed short)v8,0,samples);

			samples += 8;

			v1 = (vector float)vec_sr((vector unsigned int)v1, vshift);

			v2 = (vector float)vec_sr((vector unsigned int)v2, vshift);

			v1 = (vector float)vec_add((vector unsigned int)v1,(vector unsigned int)v2);

			vclip = vec_sums((vector signed int)v1,vclip);

		}

		vec_st(vclip,0,clip_tmp);

		clip = clip_tmp[3];

	}

	if(final) fr->buffer.fill += 128;

	return clip;

}

int synth_1to1_stereo_altivec(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)

{

	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);

	real *b0l, *b0r, **bufl, **bufr;

	int clip; 

	int bo1;

#ifndef NO_EQUALIZER

	if(fr->have_eq_settings)

	{

		do_equalizer(bandPtr_l,0,fr->equalizer);

		do_equalizer(bandPtr_r,1,fr->equalizer);

	}

#endif

	fr->bo--;

	fr->bo &= 0xf;

	bufl = fr->real_buffs[0];

	bufr = fr->real_buffs[1];

	if(fr->bo & 0x1)

	{

		b0l = bufl[0];

		b0r = bufr[0];

		bo1 = fr->bo;

		dct64_altivec(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_altivec(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_altivec(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_altivec(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	{

		register int j;

		real *window = fr->decwin + 16 - bo1;

		ALIGNED(16) int clip_tmp[4];

		vector float v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13;

		vector unsigned char vperm1,vperm2;

		vector float vsum,vsum2,vsum3,vsum4,vsum5,vsum6,vsum7,vsum8,vmin,vmax,vzero;

		vector signed int vclip;

		vector unsigned int vshift;

		vector signed short vprev;

		vclip = vec_xor(vclip,vclip);

		vzero = vec_xor(vzero,vzero);

		vshift = vec_splat_u32(-1); /* 31 */

#ifdef __APPLE__

		vmax = (vector float)(32767.0f);

		vmin = (vector float)(-32768.0f);

#else

		vmax = (vector float){32767.0f,32767.0f,32767.0f,32767.0f};

		vmin = (vector float){-32768.0f,-32768.0f,-32768.0f,-32768.0f};

#endif

		vperm1 = vec_lvsl(0,window);

		vperm2 = vec_lvsr(0,samples);

		vprev = vec_perm(vec_ld(0,samples),vec_ld(0,samples),vec_lvsl(0,samples));

		for (j=4;j;j--)

		{

			SYNTH_STEREO_ALTIVEC(16);

			vsum = vec_sub(vsum,vsum2);

			vsum2 = vec_sub(vsum5,vsum6);

			vsum3 = vec_sub(vsum3,vsum4);

			vsum4 = vec_sub(vsum7,vsum8);

			vsum = vec_add(vsum,vsum3);

			vsum2 = vec_add(vsum2,vsum4);

			v1 = vec_round(vsum);

			v2 = vec_round(vsum2);

			v1 = (vector float)vec_cts(v1,0);

			v2 = (vector float)vec_cts(v2,0);

			v3 = vec_mergeh(v1, v2);

			v4 = vec_mergel(v1, v2);

			v5 = (vector float)vec_packs((vector signed int)v3,(vector signed int)v4);

			v6 = (vector float)vec_perm(vprev,(vector signed short)v5,vperm2);

			vprev = (vector signed short)v5;

			v1 = (vector float)vec_cmpgt(vsum,vmax);

			v2 = (vector float)vec_cmplt(vsum,vmin);

			v3 = (vector float)vec_cmpgt(vsum2,vmax);

			v4 = (vector float)vec_cmplt(vsum2,vmin);

			vec_st((vector signed short)v6,0,samples);

			samples += 8;

			v1 = (vector float)vec_sr((vector unsigned int)v1, vshift);

			v2 = (vector float)vec_sr((vector unsigned int)v2, vshift);

			v3 = (vector float)vec_sr((vector unsigned int)v3, vshift);

			v4 = (vector float)vec_sr((vector unsigned int)v4, vshift);

			v1 = (vector float)vec_add((vector unsigned int)v1,(vector unsigned int)v2);

			v2 = (vector float)vec_add((vector unsigned int)v3,(vector unsigned int)v4);

			vclip = vec_sums((vector signed int)v1,vclip);

			vclip = vec_sums((vector signed int)v2,vclip);

		}

		for (j=4;j;j--)

		{

			SYNTH_STEREO_ALTIVEC(-16);

			vsum = vec_add(vsum,vsum2);

			vsum2 = vec_add(vsum5,vsum6);

			vsum3 = vec_add(vsum3,vsum4);

			vsum4 = vec_add(vsum7,vsum8);

			vsum = vec_add(vsum,vsum3);

			vsum2 = vec_add(vsum2,vsum4);

			v1 = vec_round(vsum);

			v2 = vec_round(vsum2);

			v1 = (vector float)vec_cts(v1,0);

			v2 = (vector float)vec_cts(v2,0);

			v3 = vec_mergeh(v1, v2);

			v4 = vec_mergel(v1, v2);

			v5 = (vector float)vec_packs((vector signed int)v3,(vector signed int)v4);

			v6 = (vector float)vec_perm(vprev,(vector signed short)v5,vperm2);

			vprev = (vector signed short)v5;

			v1 = (vector float)vec_cmpgt(vsum,vmax);

			v2 = (vector float)vec_cmplt(vsum,vmin);

			v3 = (vector float)vec_cmpgt(vsum2,vmax);

			v4 = (vector float)vec_cmplt(vsum2,vmin);

			vec_st((vector signed short)v6,0,samples);

			samples += 8;

			v1 = (vector float)vec_sr((vector unsigned int)v1, vshift);

			v2 = (vector float)vec_sr((vector unsigned int)v2, vshift);

			v3 = (vector float)vec_sr((vector unsigned int)v3, vshift);

			v4 = (vector float)vec_sr((vector unsigned int)v4, vshift);

			v1 = (vector float)vec_add((vector unsigned int)v1,(vector unsigned int)v2);

			v2 = (vector float)vec_add((vector unsigned int)v3,(vector unsigned int)v4);

			vclip = vec_sums((vector signed int)v1,vclip);

			vclip = vec_sums((vector signed int)v2,vclip);

		}

		if((size_t)samples & 0xf)

		{

			v1 = (vector float)vec_perm(vec_ld(0,samples),vec_ld(0,samples),vec_lvsl(0,samples));

			v2 = (vector float)vec_perm(vprev,(vector signed short)v1,vperm2);

			vec_st((vector signed short)v2,0,samples);

		}

		vec_st(vclip,0,clip_tmp);

		clip = clip_tmp[3];

	}

	fr->buffer.fill += 128;

	return clip;

}

int synth_1to1_real_altivec(real *bandPtr,int channel,mpg123_handle *fr, int final)

{

	real *samples = (real *) (fr->buffer.data+fr->buffer.fill);

	real *b0, **buf;

	int bo1;

#ifndef NO_EQUALIZER

	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);

#endif

	if(!channel)

	{

		fr->bo--;

		fr->bo &= 0xf;

		buf = fr->real_buffs[0];

	}

	else

	{

		samples++;

		buf = fr->real_buffs[1];

	}

	if(fr->bo & 0x1)

	{

		b0 = buf[0];

		bo1 = fr->bo;

		dct64_altivec(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_altivec(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	{

		register int j;

		real *window = fr->decwin + 16 - bo1;

		vector float v1,v2,v3,v4,v5,v6,v7,v8,v9;

		vector unsigned char vperm1,vperm2,vperm3,vperm4, vperm5;

		vector float vsum,vsum2,vsum3,vsum4,vscale,vzero;

		vector float vsample1,vsample2,vsample3;

		vzero = vec_xor(vzero, vzero);

#ifdef __APPLE__

		vscale = (vector float)(1.0f/32768.0f);

		vperm4 = (vector unsigned char)(0,1,2,3,20,21,22,23,4,5,6,7,28,29,30,31);

		vperm5 = (vector unsigned char)(8,9,10,11,20,21,22,23,12,13,14,15,28,29,30,31);

#else

		vscale = (vector float){1.0f/32768.0f,1.0f/32768.0f,1.0f/32768.0f,1.0f/32768.0f};

		vperm4 = (vector unsigned char){0,1,2,3,20,21,22,23,4,5,6,7,28,29,30,31};

		vperm5 = (vector unsigned char){8,9,10,11,20,21,22,23,12,13,14,15,28,29,30,31};

#endif

		vperm1 = vec_lvsl(0,window);

		vperm2 = vec_lvsl(0,samples);

		vperm3 = vec_lvsr(0,samples);

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(16);

			vsum = vec_sub(v5,v6);

			v9 = vec_sub(v7,v8);

			vsum = vec_add(vsum,v9);

			vsum = vec_madd(vsum, vscale, vzero);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(16,samples);

			vsample3 = vec_ld(31,samples);

			v1 = vec_perm(vsample1, vsample2, vperm2);

			v2 = vec_perm(vsample2, vsample3, vperm2);

			v1 = vec_perm(vsum, v1, vperm4);

			v2 = vec_perm(vsum, v2, vperm5);

			v3 = vec_perm(vsample3, vsample2, vperm2);

			v4 = vec_perm(vsample2, vsample1, vperm2);

			v5 = vec_perm(v2, v3, vperm3);

			v6 = vec_perm(v1, v2, vperm3);

			v7 = vec_perm(v4, v1, vperm3);

			vec_st(v5,31,samples);

			vec_st(v6,16,samples);

			vec_st(v7,0,samples);

			samples += 8;

		}

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(-16);

			vsum = vec_add(v5,v6);

			v9 = vec_add(v7,v8);

			vsum = vec_add(vsum,v9);

			vsum = vec_madd(vsum, vscale, vzero);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(16,samples);

			vsample3 = vec_ld(31,samples);

			v1 = vec_perm(vsample1, vsample2, vperm2);

			v2 = vec_perm(vsample2, vsample3, vperm2);

			v1 = vec_perm(vsum, v1, vperm4);

			v2 = vec_perm(vsum, v2, vperm5);

			v3 = vec_perm(vsample3, vsample2, vperm2);

			v4 = vec_perm(vsample2, vsample1, vperm2);

			v5 = vec_perm(v2, v3, vperm3);

			v6 = vec_perm(v1, v2, vperm3);

			v7 = vec_perm(v4, v1, vperm3);

			vec_st(v5,31,samples);

			vec_st(v6,16,samples);

			vec_st(v7,0,samples);

			samples += 8;

		}

	}

	if(final) fr->buffer.fill += 256;

	return 0;

}

int synth_1to1_fltst_altivec(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)

{

	real *samples = (real *) (fr->buffer.data+fr->buffer.fill);

	real *b0l, *b0r, **bufl, **bufr;

	int bo1;

#ifndef NO_EQUALIZER

	if(fr->have_eq_settings)

	{

		do_equalizer(bandPtr_l,0,fr->equalizer);

		do_equalizer(bandPtr_r,1,fr->equalizer);

	}

#endif

	fr->bo--;

	fr->bo &= 0xf;

	bufl = fr->real_buffs[0];

	bufr = fr->real_buffs[1];

	if(fr->bo & 0x1)

	{

		b0l = bufl[0];

		b0r = bufr[0];

		bo1 = fr->bo;

		dct64_altivec(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_altivec(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_altivec(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_altivec(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	{

		register int j;

		real *window = fr->decwin + 16 - bo1;

		vector float v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13;

		vector unsigned char vperm1,vperm2;

		vector float vsum,vsum2,vsum3,vsum4,vsum5,vsum6,vsum7,vsum8,vscale,vzero;

		vector float vprev;

		vzero = vec_xor(vzero,vzero);

#ifdef __APPLE__

		vscale = (vector float)(1.0f/32768.0f);

#else

		vscale = (vector float){1.0f/32768.0f,1.0f/32768.0f,1.0f/32768.0f,1.0f/32768.0f};

#endif

		vperm1 = vec_lvsl(0,window);

		vperm2 = vec_lvsr(0,samples);

		vprev = vec_perm(vec_ld(0,samples),vec_ld(0,samples),vec_lvsl(0,samples));

		for (j=4;j;j--)

		{

			SYNTH_STEREO_ALTIVEC(16);

			vsum = vec_sub(vsum,vsum2);

			vsum2 = vec_sub(vsum5,vsum6);

			vsum3 = vec_sub(vsum3,vsum4);

			vsum4 = vec_sub(vsum7,vsum8);

			vsum = vec_add(vsum,vsum3);

			vsum2 = vec_add(vsum2,vsum4);

			vsum = vec_madd(vsum, vscale, vzero);

			vsum2 = vec_madd(vsum2, vscale, vzero);

			v1 = vec_mergeh(vsum, vsum2);

			v2 = vec_mergel(vsum, vsum2);

			v3 = vec_perm(vprev,v1,vperm2);

			v4 = vec_perm(v1,v2,vperm2);

			vprev = v2;

			vec_st(v3,0,samples);

			vec_st(v4,16,samples);

			samples += 8;

		}

		for (j=4;j;j--)

		{

			SYNTH_STEREO_ALTIVEC(-16);

			vsum = vec_add(vsum,vsum2);

			vsum2 = vec_add(vsum5,vsum6);

			vsum3 = vec_add(vsum3,vsum4);

			vsum4 = vec_add(vsum7,vsum8);

			vsum = vec_add(vsum,vsum3);

			vsum2 = vec_add(vsum2,vsum4);

			vsum = vec_madd(vsum, vscale, vzero);

			vsum2 = vec_madd(vsum2, vscale, vzero);

			v1 = vec_mergeh(vsum, vsum2);

			v2 = vec_mergel(vsum, vsum2);

			v3 = vec_perm(vprev,v1,vperm2);

			v4 = vec_perm(v1,v2,vperm2);

			vprev = v2;

			vec_st(v3,0,samples);

			vec_st(v4,16,samples);

			samples += 8;

		}

		if((size_t)samples & 0xf)

		{

			v1 = (vector float)vec_perm(vec_ld(0,samples),vec_ld(0,samples),vec_lvsl(0,samples));

			v2 = (vector float)vec_perm(vprev,v1,vperm2);

			vec_st(v2,0,samples);

		}

	}

	fr->buffer.fill += 256;

	return 0;

}

int synth_1to1_s32_altivec(real *bandPtr,int channel,mpg123_handle *fr, int final)

{

	int32_t *samples = (int32_t *) (fr->buffer.data+fr->buffer.fill);

	real *b0, **buf;

	int clip;

	int bo1;

#ifndef NO_EQUALIZER

	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);

#endif

	if(!channel)

	{

		fr->bo--;

		fr->bo &= 0xf;

		buf = fr->real_buffs[0];

	}

	else

	{

		samples++;

		buf = fr->real_buffs[1];

	}

	if(fr->bo & 0x1)

	{

		b0 = buf[0];

		bo1 = fr->bo;

		dct64_altivec(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_altivec(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	{

		register int j;

		real *window = fr->decwin + 16 - bo1;

		ALIGNED(16) int clip_tmp[4];

		vector float v1,v2,v3,v4,v5,v6,v7,v8,v9;

		vector unsigned char vperm1,vperm2,vperm3,vperm4,vperm5;

		vector float vsum,vsum2,vsum3,vsum4,vmax,vmin,vzero;

		vector signed int vsample1,vsample2,vsample3;

		vector unsigned int vshift;

		vector signed int vclip;

		vzero = vec_xor(vzero, vzero);

		vclip = vec_xor(vclip, vclip);

		vshift = vec_splat_u32(-1); /* 31 */

#ifdef __APPLE__

		vmax = (vector float)(32767.999f);

		vmin = (vector float)(-32768.0f);

		vperm4 = (vector unsigned char)(0,1,2,3,20,21,22,23,4,5,6,7,28,29,30,31);

		vperm5 = (vector unsigned char)(8,9,10,11,20,21,22,23,12,13,14,15,28,29,30,31);

#else

		vmax = (vector float){32767.999f,32767.999f,32767.999f,32767.999f};

		vmin = (vector float){-32768.0f,-32768.0f,-32768.0f,-32768.0f};

		vperm4 = (vector unsigned char){0,1,2,3,20,21,22,23,4,5,6,7,28,29,30,31};

		vperm5 = (vector unsigned char){8,9,10,11,20,21,22,23,12,13,14,15,28,29,30,31};

#endif

		vperm1 = vec_lvsl(0,window);

		vperm2 = vec_lvsl(0,samples);

		vperm3 = vec_lvsr(0,samples);

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(16);

			vsum = vec_sub(v5,v6);

			v9 = vec_sub(v7,v8);

			v1 = vec_add(vsum,v9);

			vsum = (vector float)vec_cts(v1,16);

			v8 = (vector float)vec_cmpgt(v1,vmax);

			v9 = (vector float)vec_cmplt(v1,vmin);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(16,samples);

			vsample3 = vec_ld(31,samples);

			v1 = (vector float)vec_perm(vsample1, vsample2, vperm2);

			v2 = (vector float)vec_perm(vsample2, vsample3, vperm2);

			v1 = vec_perm(vsum, v1, vperm4);

			v2 = vec_perm(vsum, v2, vperm5);

			v3 = (vector float)vec_perm(vsample3, vsample2, vperm2);

			v4 = (vector float)vec_perm(vsample2, vsample1, vperm2);

			v5 = vec_perm(v2, v3, vperm3);

			v6 = vec_perm(v1, v2, vperm3);

			v7 = vec_perm(v4, v1, vperm3);

			vec_st((vector signed int)v5,31,samples);

			vec_st((vector signed int)v6,16,samples);

			vec_st((vector signed int)v7,0,samples);

			samples += 8;

			v1 = (vector float)vec_sr((vector unsigned int)v8, vshift);

			v2 = (vector float)vec_sr((vector unsigned int)v9, vshift);

			v1 = (vector float)vec_add((vector unsigned int)v1,(vector unsigned int)v2);

			vclip = vec_sums((vector signed int)v1,vclip);

		}

		for (j=4;j;j--)

		{

			SYNTH_ALTIVEC(-16);

			vsum = vec_add(v5,v6);

			v9 = vec_add(v7,v8);

			v1 = vec_add(vsum,v9);

			vsum = (vector float)vec_cts(v1,16);

			v8 = (vector float)vec_cmpgt(v1,vmax);

			v9 = (vector float)vec_cmplt(v1,vmin);

			vsample1 = vec_ld(0,samples);

			vsample2 = vec_ld(16,samples);

			vsample3 = vec_ld(31,samples);