WebSVN – Kolibri OS – Diff – /programs/develop/libraries/libmpg123/synth.c

 /*
 	synth.c: The functions for synthesizing 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"
-/* Stereo-related synth, wrapping over _some_ plain synth. */
-int synth_stereo_wrap(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)
-{
-	int clip;
-	clip  = (fr->synth)(bandPtr_l, 0, fr, 0);
-	clip += (fr->synth)(bandPtr_r, 1, fr, 1);
-	return clip;
-}
 /*
 	Part 1: All synth functions that produce signed short.
 	That is:
 		- synth_1to1 with cpu-specific variants (synth_1to1_i386, synth_1to1_i586 ...)
-		- synth_1to1_mono and synth_1to1_mono2stereo; which use fr->synths.plain[r_1to1][f_16].
+		- synth_1to1_mono and synth_1to1_m2s; which use fr->synths.plain[r_1to1][f_16].
 	Nearly every decoder variant has it's own synth_1to1, while the mono conversion is shared.
 */
 #define SAMPLE_T short
 #define WRITE_SAMPLE(samples,sum,clip) WRITE_SHORT_SAMPLE(samples,sum,clip)
 /* Part 1a: All straight 1to1 decoding functions */
 #define BLOCK 0x40 /* One decoding block is 64 samples. */
 #define SYNTH_NAME synth_1to1
 #include "synth.h"
 #undef SYNTH_NAME
 /* Mono-related synths; they wrap over _some_ synth_1to1. */
 #define SYNTH_NAME       fr->synths.plain[r_1to1][f_16]
 #define MONO_NAME        synth_1to1_mono
-#define MONO2STEREO_NAME synth_1to1_mono2stereo
+#define MONO2STEREO_NAME synth_1to1_m2s
 #include "synth_mono.h"
 #undef SYNTH_NAME
 #undef MONO_NAME
 #undef MONO2STEREO_NAME
 /* Now we have possibly some special synth_1to1 ...
    ... they produce signed short; the mono functions defined above work on the special synths, too. */
 #ifdef OPT_GENERIC_DITHER
 #define SYNTH_NAME synth_1to1_dither
 /* We need the accurate sample writing... */
 #undef WRITE_SAMPLE
 #define WRITE_SAMPLE(samples,sum,clip) WRITE_SHORT_SAMPLE_ACCURATE(samples,sum,clip)
 #define USE_DITHER
 #include "synth.h"
 #undef USE_DITHER
 #undef SYNTH_NAME
 #undef WRITE_SAMPLE
 #define WRITE_SAMPLE(samples,sum,clip) WRITE_SHORT_SAMPLE(samples,sum,clip)
 #endif
 #ifdef OPT_X86
 /* The i386-specific C code, here as short variant, later 8bit and float. */
 #define NO_AUTOINCREMENT
 #define SYNTH_NAME synth_1to1_i386
 #include "synth.h"
 #undef SYNTH_NAME
 /* i386 uses the normal mono functions. */
 #undef NO_AUTOINCREMENT
 #endif
 #undef BLOCK /* Following functions are so special that they don't need this. */
 #ifdef OPT_I586
 /* This is defined in assembler. */
 int synth_1to1_i586_asm(real *bandPtr, int channel, unsigned char *out, unsigned char *buffs, int *bo, real *decwin);
 /* This is just a hull to use the mpg123 handle. */
 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);
 	ret = synth_1to1_i586_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_I586_DITHER
 /* This is defined in assembler. */
 int synth_1to1_i586_asm_dither(real *bandPtr, int channel, unsigned char *out, unsigned char *buffs, int *bo, real *decwin, float *dithernoise);
 /* This is just a hull to use the mpg123 handle. */
 int synth_1to1_i586_dither(real *bandPtr, int channel, mpg123_handle *fr, int final)
+{
 	int ret;
 	int bo_dither[2]; /* Temporary workaround? Could expand the asm code. */
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	/* Applying this hack, to change the asm only bit by bit (adding dithernoise pointer). */
 	bo_dither[0] = fr->bo;
 	bo_dither[1] = fr->ditherindex;
 	ret = synth_1to1_i586_asm_dither(bandPtr, channel, fr->buffer.data+fr->buffer.fill, fr->rawbuffs, bo_dither, fr->decwin, fr->dithernoise);
 	fr->bo          = bo_dither[0];
 	fr->ditherindex = bo_dither[1];
 	if(final) fr->buffer.fill += 128;
 	return ret;
+}
 #endif
 #ifdef OPT_3DNOW
 /* Those are defined in assembler. */
 void do_equalizer_3dnow(real *bandPtr,int channel, real equalizer[2][32]);
 int synth_1to1_3dnow_asm(real *bandPtr, int channel, unsigned char *out, unsigned char *buffs, int *bo, real *decwin);
 /* This is just a hull to use the mpg123 handle. */
 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
 /* This is defined in assembler. */
 int synth_1to1_MMX(real *bandPtr, int channel, short *out, short *buffs, int *bo, float *decwins);
 /* This is just a hull to use the mpg123 handle. */
 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
 #ifdef ACCURATE_ROUNDING
 /* This is defined in assembler. */
 int synth_1to1_sse_accurate_asm(real *window, real *b0, short *samples, int bo1);
-int synth_1to1_stereo_sse_accurate_asm(real *window, real *b0l, real *b0r, short *samples, int bo1);
+int synth_1to1_s_sse_accurate_asm(real *window, real *b0l, real *b0r, short *samples, int bo1);
 void dct64_real_sse(real *out0, real *out1, real *samples);
 /* This is just a hull to use the mpg123 handle. */
 int synth_1to1_sse(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;
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	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);
+	}
 	clip = synth_1to1_sse_accurate_asm(fr->decwin, b0, samples, bo1);
 	if(final) fr->buffer.fill += 128;
 	return clip;
+}
 int synth_1to1_stereo_sse(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	real *b0l, *b0r, **bufl, **bufr;
 	int bo1;
 	int clip;
 	if(fr->have_eq_settings)
+	{
 		do_equalizer(bandPtr_l,0,fr->equalizer);
 		do_equalizer(bandPtr_r,1,fr->equalizer);
+	}
 	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);
+	}
-	clip = synth_1to1_stereo_sse_accurate_asm(fr->decwin, b0l, b0r, samples, bo1);
+	clip = synth_1to1_s_sse_accurate_asm(fr->decwin, b0l, b0r, samples, bo1);
 	fr->buffer.fill += 128;
 	return clip;
+}
 #else
 /* This is defined in assembler. */
 void synth_1to1_sse_asm(real *bandPtr, int channel, short *samples, short *buffs, int *bo, real *decwin);
 /* This is just a hull to use the mpg123 handle. */
 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
 #endif
 #ifdef OPT_3DNOWEXT
 /* This is defined in assembler. */
 void synth_1to1_3dnowext_asm(real *bandPtr, int channel, short *samples, short *buffs, int *bo, real *decwin);
 /* This is just a hull to use the mpg123 handle. */
 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
 #ifdef OPT_X86_64
 #ifdef ACCURATE_ROUNDING
 /* Assembler routines. */
 int synth_1to1_x86_64_accurate_asm(real *window, real *b0, short *samples, int bo1);
-int synth_1to1_stereo_x86_64_accurate_asm(real *window, real *b0l, real *b0r, short *samples, int bo1);
+int synth_1to1_s_x86_64_accurate_asm(real *window, real *b0l, real *b0r, short *samples, int bo1);
 void dct64_real_x86_64(real *out0, real *out1, real *samples);
 /* Hull for C mpg123 API */
 int synth_1to1_x86_64(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	real *b0, **buf;
 	int bo1;
 	int clip;
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	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);
+	}
 	clip = synth_1to1_x86_64_accurate_asm(fr->decwin, b0, samples, bo1);
 	if(final) fr->buffer.fill += 128;
 	return clip;
+}
 int synth_1to1_stereo_x86_64(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	real *b0l, *b0r, **bufl, **bufr;
 	int bo1;
 	int clip;
 	if(fr->have_eq_settings)
+	{
 		do_equalizer(bandPtr_l,0,fr->equalizer);
 		do_equalizer(bandPtr_r,1,fr->equalizer);
+	}
 	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);
+	}
-	clip = synth_1to1_stereo_x86_64_accurate_asm(fr->decwin, b0l, b0r, samples, bo1);
+	clip = synth_1to1_s_x86_64_accurate_asm(fr->decwin, b0l, b0r, samples, bo1);
 	fr->buffer.fill += 128;
 	return clip;
+}
 #else
 /* This is defined in assembler. */
 int synth_1to1_x86_64_asm(short *window, short *b0, short *samples, int bo1);
-int synth_1to1_stereo_x86_64_asm(short *window, short *b0l, short *b0r, short *samples, int bo1);
+int synth_1to1_s_x86_64_asm(short *window, short *b0l, short *b0r, short *samples, int bo1);
 void dct64_x86_64(short *out0, short *out1, real *samples);
 /* This is just a hull to use the mpg123 handle. */
 int synth_1to1_x86_64(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	short *b0, **buf;
 	int clip;
 	int bo1;
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	if(!channel)
+	{
 		fr->bo--;
 		fr->bo &= 0xf;
 		buf = fr->short_buffs[0];
+	}
 	else
+	{
 		samples++;
 		buf = fr->short_buffs[1];
+	}
 	if(fr->bo & 0x1)
+	{
 		b0 = buf[0];
 		bo1 = fr->bo;
 		dct64_x86_64(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);
+	}
 	else
+	{
 		b0 = buf[1];
 		bo1 = fr->bo+1;
 		dct64_x86_64(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);
+	}
 	clip = synth_1to1_x86_64_asm((short *)fr->decwins, b0, samples, bo1);
 	if(final) fr->buffer.fill += 128;
 	return clip;
+}
 int synth_1to1_stereo_x86_64(real *bandPtr_l,real *bandPtr_r, mpg123_handle *fr)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	short *b0l, *b0r, **bufl, **bufr;
 	int clip;
 	int bo1;
 	if(fr->have_eq_settings)
+	{
 		do_equalizer(bandPtr_l,0,fr->equalizer);
 		do_equalizer(bandPtr_r,1,fr->equalizer);
+	}
 	fr->bo--;
 	fr->bo &= 0xf;
 	bufl = fr->short_buffs[0];
 	bufr = fr->short_buffs[1];
 	if(fr->bo & 0x1)
+	{
 		b0l = bufl[0];
 		b0r = bufr[0];
 		bo1 = fr->bo;
 		dct64_x86_64(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);
 		dct64_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_x86_64(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);
 		dct64_x86_64(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);
+	}
-	clip = synth_1to1_stereo_x86_64_asm((short *)fr->decwins, b0l, b0r, samples, bo1);
+	clip = synth_1to1_s_x86_64_asm((short *)fr->decwins, b0l, b0r, samples, bo1);
 	fr->buffer.fill += 128;
 	return clip;
+}
 #endif
 #endif
 #ifdef OPT_ARM
 #ifdef ACCURATE_ROUNDING
 /* Assembler routines. */
 int synth_1to1_arm_accurate_asm(real *window, real *b0, short *samples, int bo1);
 /* Hull for C mpg123 API */
 int synth_1to1_arm(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	real *b0, **buf;
 	int bo1;
 	int clip;
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	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(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);
+	}
 	else
+	{
 		b0 = buf[1];
 		bo1 = fr->bo+1;
 		dct64(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);
+	}
 	clip = synth_1to1_arm_accurate_asm(fr->decwin, b0, samples, bo1);
 	if(final) fr->buffer.fill += 128;
 	return clip;
+}
 #else
 /* Assembler routines. */
 int synth_1to1_arm_asm(real *window, real *b0, short *samples, int bo1);
 /* Hull for C mpg123 API */
 int synth_1to1_arm(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
 	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
 	real *b0, **buf;
 	int bo1;
 	int clip;
 	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
 	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(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);
+	}
 	else
+	{
 		b0 = buf[1];
 		bo1 = fr->bo+1;
 		dct64(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);
+	}
 	clip = synth_1to1_arm_asm(fr->decwin, b0, samples, bo1);
 	if(final) fr->buffer.fill += 128;
 	return clip;
+}
 #endif
 #endif
+#ifdef OPT_NEON
+#ifdef ACCURATE_ROUNDING
+/* This is defined in assembler. */
+int synth_1to1_neon_accurate_asm(real *window, real *b0, short *samples, int bo1);
+int synth_1to1_s_neon_accurate_asm(real *window, real *b0l, real *b0r, short *samples, int bo1);
+void dct64_real_neon(real *out0, real *out1, real *samples);
+/* Hull for C mpg123 API */
+int synth_1to1_neon(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
+	real *b0, **buf;
+	int bo1;
+	int clip;
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+	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);
+	}
+	clip = synth_1to1_neon_accurate_asm(fr->decwin, b0, samples, bo1);
+	if(final) fr->buffer.fill += 128;
+	return clip;
+}
+int synth_1to1_stereo_neon(real *bandPtr_l, real *bandPtr_r, mpg123_handle *fr)
+{
+	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
+	real *b0l, *b0r, **bufl, **bufr;
+	int bo1;
+	int clip;
+	if(fr->have_eq_settings)
+	{
+		do_equalizer(bandPtr_l,0,fr->equalizer);
+		do_equalizer(bandPtr_r,1,fr->equalizer);
+	}
+	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);
+	}
+	clip = synth_1to1_s_neon_accurate_asm(fr->decwin, b0l, b0r, samples, bo1);
+	fr->buffer.fill += 128;
+	return clip;
+}
+#else
+/* This is defined in assembler. */
+int synth_1to1_neon_asm(short *window, short *b0, short *samples, int bo1);
+int synth_1to1_s_neon_asm(short *window, short *b0l, short *b0r, short *samples, int bo1);
+void dct64_neon(short *out0, short *out1, real *samples);
+/* Hull for C mpg123 API */
+int synth_1to1_neon(real *bandPtr,int channel, mpg123_handle *fr, int final)
+{
+	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
+	short *b0, **buf;
+	int clip;
+	int bo1;
+	if(fr->have_eq_settings) do_equalizer(bandPtr,channel,fr->equalizer);
+	if(!channel)
+	{
+		fr->bo--;
+		fr->bo &= 0xf;
+		buf = fr->short_buffs[0];
+	}
+	else
+	{
+		samples++;
+		buf = fr->short_buffs[1];
+	}
+	if(fr->bo & 0x1)
+	{
+		b0 = buf[0];
+		bo1 = fr->bo;
+		dct64_neon(buf[1]+((fr->bo+1)&0xf),buf[0]+fr->bo,bandPtr);
+	}
+	else
+	{
+		b0 = buf[1];
+		bo1 = fr->bo+1;
+		dct64_neon(buf[0]+fr->bo,buf[1]+fr->bo+1,bandPtr);
+	}
+	clip = synth_1to1_neon_asm((short *)fr->decwins, b0, samples, bo1);
+	if(final) fr->buffer.fill += 128;
+	return clip;
+}
+int synth_1to1_stereo_neon(real *bandPtr_l,real *bandPtr_r, mpg123_handle *fr)
+{
+	short *samples = (short *) (fr->buffer.data+fr->buffer.fill);
+	short *b0l, *b0r, **bufl, **bufr;
+	int clip;
+	int bo1;
+	if(fr->have_eq_settings)
+	{
+		do_equalizer(bandPtr_l,0,fr->equalizer);
+		do_equalizer(bandPtr_r,1,fr->equalizer);
+	}
+	fr->bo--;
+	fr->bo &= 0xf;
+	bufl = fr->short_buffs[0];
+	bufr = fr->short_buffs[1];
+	if(fr->bo & 0x1)
+	{
+		b0l = bufl[0];
+		b0r = bufr[0];
+		bo1 = fr->bo;
+		dct64_neon(bufl[1]+((fr->bo+1)&0xf),bufl[0]+fr->bo,bandPtr_l);
+		dct64_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_neon(bufl[0]+fr->bo,bufl[1]+fr->bo+1,bandPtr_l);
+		dct64_neon(bufr[0]+fr->bo,bufr[1]+fr->bo+1,bandPtr_r);
+	}
+	clip = synth_1to1_s_neon_asm((short *)fr->decwins, b0l, b0r, samples, bo1);
+	fr->buffer.fill += 128;
+	return clip;
+}
+#endif
+#endif
 #ifndef NO_DOWNSAMPLE
 /*
 	Part 1b: 2to1 synth.
 	Only generic and i386 functions this time.
 */
 #define BLOCK 0x20 /* One decoding block is 32 samples. */
 #define SYNTH_NAME synth_2to1
 #include "synth.h"
 #undef SYNTH_NAME
 #ifdef OPT_DITHER /* Used for generic_dither and as fallback for i586_dither. */
 #define SYNTH_NAME synth_2to1_dither
 #define USE_DITHER
 #include "synth.h"
 #undef USE_DITHER
 #undef SYNTH_NAME
 #endif
 #define SYNTH_NAME       fr->synths.plain[r_2to1][f_16]
 #define MONO_NAME        synth_2to1_mono
-#define MONO2STEREO_NAME synth_2to1_mono2stereo
+#define MONO2STEREO_NAME synth_2to1_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_i386
 #include "synth.h"
 #undef SYNTH_NAME
 /* i386 uses the normal mono functions. */
 #undef NO_AUTOINCREMENT
 #endif
 #undef BLOCK
 /*
 	Part 1c: 4to1 synth.
 	Same procedure as above...
 */
 #define BLOCK 0x10 /* One decoding block is 16 samples. */
 #define SYNTH_NAME synth_4to1
 #include "synth.h"
 #undef SYNTH_NAME
 #ifdef OPT_DITHER
 #define SYNTH_NAME synth_4to1_dither
 #define USE_DITHER
 #include "synth.h"
 #undef USE_DITHER
 #undef SYNTH_NAME
 #endif
 #define SYNTH_NAME       fr->synths.plain[r_4to1][f_16] /* This is just for the _i386 one... gotta check if it is really useful... */
 #define MONO_NAME        synth_4to1_mono
-#define MONO2STEREO_NAME synth_4to1_mono2stereo
+#define MONO2STEREO_NAME synth_4to1_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_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 1d: ntom synth.
 	Same procedure as above... Just no extra play anymore, straight synth that uses the plain dct64.
 */
 /* These are all in one header, there's no flexibility to gain. */
 #define SYNTH_NAME       synth_ntom
 #define MONO_NAME        synth_ntom_mono
-#define MONO2STEREO_NAME synth_ntom_mono2stereo
+#define MONO2STEREO_NAME synth_ntom_m2s
 #include "synth_ntom.h"
 #undef SYNTH_NAME
 #undef MONO_NAME
 #undef MONO2STEREO_NAME
 #endif
 /* Done with short output. */
 #undef SAMPLE_T
 #undef WRITE_SAMPLE

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(root)/programs/develop/libraries/libmpg123/synth.c @ 1908 – Rev 1905 → 3960