/*

	synth_real.c: The functions for synthesizing real (float) samples, at the end of decoding.

	copyright 1995-2008 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, heavily dissected and rearranged by Thomas Orgis

*/

#include "mpg123lib_intern.h"

#include "sample.h"

#include "debug.h"

#ifdef REAL_IS_FIXED

#error "Do not build this file with fixed point math!"

#else

/* 

	Part 3: All synth functions that produce float output.

	What we need is just a special WRITE_SAMPLE. For the generic and i386 functions, that is.

	The optimized synths would need to be changed internally to support float output.

*/

#define SAMPLE_T real

#define WRITE_SAMPLE(samples,sum,clip) WRITE_REAL_SAMPLE(samples,sum,clip)

/* Part 3a: All straight 1to1 decoding functions */

#define BLOCK 0x40 /* One decoding block is 64 samples. */

#define SYNTH_NAME synth_1to1_real

#include "synth.h"

#undef SYNTH_NAME

/* Mono-related synths; they wrap over _some_ synth_1to1_real (could be generic, could be i386). */

#define SYNTH_NAME       fr->synths.plain[r_1to1][f_real]

#define MONO_NAME        synth_1to1_real_mono

#define MONO2STEREO_NAME synth_1to1_real_m2s

#include "synth_mono.h"

#undef SYNTH_NAME

#undef MONO_NAME

#undef MONO2STEREO_NAME

#ifdef OPT_X86

#define NO_AUTOINCREMENT

#define SYNTH_NAME synth_1to1_real_i386

#include "synth.h"

#undef SYNTH_NAME

/* i386 uses the normal mono functions. */

#undef NO_AUTOINCREMENT

#endif

#undef BLOCK

/* At least one optimized real decoder... */

#ifdef OPT_X86_64

/* Assembler routines. */

int synth_1to1_real_x86_64_asm(real *window, real *b0, real *samples, int bo1);

int synth_1to1_real_s_x86_64_asm(real *window, real *b0l, real *b0r, real *samples, int bo1);

void dct64_real_x86_64(real *out0, real *out1, real *samples);

/* Hull for C mpg123 API */

int synth_1to1_real_x86_64(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_real_x86_64(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_real_x86_64(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	synth_1to1_real_x86_64_asm(fr->decwin, b0, samples, bo1);

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

	return 0;

}

int synth_1to1_real_stereo_x86_64(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_real_x86_64(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_real_x86_64(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_real_x86_64(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_real_x86_64(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	synth_1to1_real_s_x86_64_asm(fr->decwin, b0l, b0r, samples, bo1);

	fr->buffer.fill += 256;

	return 0;

}

#endif

#ifdef OPT_AVX

/* Assembler routines. */

#ifndef OPT_X86_64

int synth_1to1_real_x86_64_asm(real *window, real *b0, real *samples, int bo1);

#endif

int synth_1to1_real_s_avx_asm(real *window, real *b0l, real *b0r, real *samples, int bo1);

void dct64_real_avx(real *out0, real *out1, real *samples);

/* Hull for C mpg123 API */

int synth_1to1_real_avx(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_real_avx(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_real_avx(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	synth_1to1_real_x86_64_asm(fr->decwin, b0, samples, bo1);

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

	return 0;

}

int synth_1to1_fltst_avx(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_real_avx(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_real_avx(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_real_avx(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_real_avx(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	synth_1to1_real_s_avx_asm(fr->decwin, b0l, b0r, samples, bo1);

	fr->buffer.fill += 256;

	return 0;

}

#endif

#if defined(OPT_SSE) || defined(OPT_SSE_VINTAGE)

/* Assembler routines. */

int synth_1to1_real_sse_asm(real *window, real *b0, real *samples, int bo1);

int synth_1to1_real_s_sse_asm(real *window, real *b0l, real *b0r, real *samples, int bo1);

void dct64_real_sse(real *out0, real *out1, real *samples);

/* Hull for C mpg123 API */

int synth_1to1_real_sse(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_real_sse(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_real_sse(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	synth_1to1_real_sse_asm(fr->decwin, b0, samples, bo1);

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

	return 0;

}

int synth_1to1_real_stereo_sse(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_real_sse(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_real_sse(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_real_sse(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_real_sse(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	synth_1to1_real_s_sse_asm(fr->decwin, b0l, b0r, samples, bo1);

	fr->buffer.fill += 256;

	return 0;

}

#endif

#ifdef OPT_NEON

/* Assembler routines. */

int synth_1to1_real_neon_asm(real *window, real *b0, real *samples, int bo1);

int synth_1to1_real_s_neon_asm(real *window, real *b0l, real *b0r, real *samples, int bo1);

void dct64_real_neon(real *out0, real *out1, real *samples);

/* Hull for C mpg123 API */

int synth_1to1_real_neon(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_real_neon(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_real_neon(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	synth_1to1_real_neon_asm(fr->decwin, b0, samples, bo1);

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

	return 0;

}

int synth_1to1_real_stereo_neon(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_real_neon(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_real_neon(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_real_neon(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_real_neon(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	synth_1to1_real_s_neon_asm(fr->decwin, b0l, b0r, samples, bo1);

	fr->buffer.fill += 256;

	return 0;

}

#endif

#ifdef OPT_NEON64

/* Assembler routines. */

int synth_1to1_real_neon64_asm(real *window, real *b0, real *samples, int bo1);

int synth_1to1_real_s_neon64_asm(real *window, real *b0l, real *b0r, real *samples, int bo1);

void dct64_real_neon64(real *out0, real *out1, real *samples);

/* Hull for C mpg123 API */

int synth_1to1_real_neon64(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_real_neon64(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);

	}

	else

	{

		b0 = buf[1];

		bo1 = fr->bo+1;

		dct64_real_neon64(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);

	}

	synth_1to1_real_neon64_asm(fr->decwin, b0, samples, bo1);

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

	return 0;

}

int synth_1to1_fltst_neon64(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_real_neon64(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);

		dct64_real_neon64(bufr[1]+((fr->bo+1)&0xf),bufr[0]+fr->bo,bandPtr_r);

	}

	else

	{

		b0l = bufl[1];

		b0r = bufr[1];

		bo1 = fr->bo+1;

		dct64_real_neon64(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);

		dct64_real_neon64(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);

	}

	synth_1to1_real_s_neon64_asm(fr->decwin, b0l, b0r, samples, bo1);

	fr->buffer.fill += 256;

	return 0;

}

#endif

#ifndef NO_DOWNSAMPLE

/*

	Part 3b: 2to1 synth. Only generic and i386.

*/

#define BLOCK 0x20 /* One decoding block is 32 samples. */

#define SYNTH_NAME synth_2to1_real

#include "synth.h"

#undef SYNTH_NAME

/* Mono-related synths; they wrap over _some_ synth_2to1_real (could be generic, could be i386). */

#define SYNTH_NAME       fr->synths.plain[r_2to1][f_real]

#define MONO_NAME        synth_2to1_real_mono

#define MONO2STEREO_NAME synth_2to1_real_m2s

#include "synth_mono.h"

#undef SYNTH_NAME

#undef MONO_NAME

#undef MONO2STEREO_NAME

#ifdef OPT_X86

#define NO_AUTOINCREMENT

#define SYNTH_NAME synth_2to1_real_i386

#include "synth.h"

#undef SYNTH_NAME

/* i386 uses the normal mono functions. */

#undef NO_AUTOINCREMENT

#endif

#undef BLOCK

/*

	Part 3c: 4to1 synth. Only generic and i386.

*/

#define BLOCK 0x10 /* One decoding block is 16 samples. */

#define SYNTH_NAME synth_4to1_real

#include "synth.h"

#undef SYNTH_NAME

/* Mono-related synths; they wrap over _some_ synth_4to1_real (could be generic, could be i386). */

#define SYNTH_NAME       fr->synths.plain[r_4to1][f_real]

#define MONO_NAME        synth_4to1_real_mono

#define MONO2STEREO_NAME synth_4to1_real_m2s

#include "synth_mono.h"

#undef SYNTH_NAME

#undef MONO_NAME

#undef MONO2STEREO_NAME

#ifdef OPT_X86

#define NO_AUTOINCREMENT

#define SYNTH_NAME synth_4to1_real_i386

#include "synth.h"

#undef SYNTH_NAME

/* i386 uses the normal mono functions. */

#undef NO_AUTOINCREMENT

#endif

#undef BLOCK

#endif /* NO_DOWNSAMPLE */

#ifndef NO_NTOM

/*

	Part 3d: ntom synth.

	Same procedure as above... Just no extra play anymore, straight synth that may use an optimized dct64.

*/

/* These are all in one header, there's no flexibility to gain. */

#define SYNTH_NAME       synth_ntom_real

#define MONO_NAME        synth_ntom_real_mono

#define MONO2STEREO_NAME synth_ntom_real_m2s

#include "synth_ntom.h"

#undef SYNTH_NAME

#undef MONO_NAME

#undef MONO2STEREO_NAME

#endif

#undef SAMPLE_T

#undef WRITE_SAMPLE

#endif /* non-fixed type */