--- /dev/null
+/* MikMod sound library
+ (c) 1998, 1999, 2000 Miodrag Vallat and others - see file AUTHORS for
+ complete list.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA.
+*/
+
+/*==============================================================================
+
+ $Id$
+
+ High-quality sample mixing routines, using a 32 bits mixing buffer,
+ interpolation, and sample smoothing to improve sound quality and remove
+ clicks.
+
+==============================================================================*/
+
+/*
+
+ Future Additions:
+ Low-Pass filter to remove annoying staticy buzz.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef NO_HQMIXER
+
+#ifdef HAVE_MEMORY_H
+#include <memory.h>
+#endif
+#include <string.h>
+
+#include "mikmod_internals.h"
+
+/*
+ Constant Definitions
+ ====================
+
+ MAXVOL_FACTOR (was BITSHIFT in virtch.c)
+ Controls the maximum volume of the output data. All mixed data is
+ divided by this number after mixing, so larger numbers result in
+ quieter mixing. Smaller numbers will increase the likeliness of
+ distortion on loud modules.
+
+ REVERBERATION
+ Larger numbers result in shorter reverb duration. Longer reverb
+ durations can cause unwanted static and make the reverb sound more
+ like a crappy echo.
+
+ SAMPLING_SHIFT
+ Specified the shift multiplier which controls by how much the mixing
+ rate is multiplied while mixing. Higher values can improve quality by
+ smoothing the sound and reducing pops and clicks. Note, this is a shift
+ value, so a value of 2 becomes a mixing-rate multiplier of 4, and a
+ value of 3 = 8, etc.
+
+ FRACBITS
+ The number of bits per integer devoted to the fractional part of the
+ number. Generally, this number should not be changed for any reason.
+
+ !!! IMPORTANT !!! All values below MUST ALWAYS be greater than 0
+
+*/
+
+#define BITSHIFT 9
+#define MAXVOL_FACTOR (1<<BITSHIFT)
+#define REVERBERATION 11000L
+
+#define SAMPLING_SHIFT 2
+#define SAMPLING_FACTOR (1UL<<SAMPLING_SHIFT)
+
+#define FRACBITS 28
+#define FRACMASK ((1UL<<FRACBITS)-1UL)
+
+#define TICKLSIZE 8192
+#define TICKWSIZE (TICKLSIZE * 2)
+#define TICKBSIZE (TICKWSIZE * 2)
+
+#define CLICK_SHIFT_BASE 6
+#define CLICK_SHIFT (CLICK_SHIFT_BASE + SAMPLING_SHIFT)
+#define CLICK_BUFFER (1L << CLICK_SHIFT)
+
+#ifndef MIN
+#define MIN(a,b) (((a)<(b)) ? (a) : (b))
+#endif
+
+typedef struct VINFO {
+ UBYTE kick; /* =1 -> sample has to be restarted */
+ UBYTE active; /* =1 -> sample is playing */
+ UWORD flags; /* 16/8 bits looping/one-shot */
+ SWORD handle; /* identifies the sample */
+ ULONG start; /* start index */
+ ULONG size; /* samplesize */
+ ULONG reppos; /* loop start */
+ ULONG repend; /* loop end */
+ ULONG frq; /* current frequency */
+ int vol; /* current volume */
+ int pan; /* current panning position */
+
+ int click;
+ int rampvol;
+ SLONG lastvalL,lastvalR;
+ int lvolsel,rvolsel; /* Volume factor in range 0-255 */
+ int oldlvol,oldrvol;
+
+ SLONGLONG current; /* current index in the sample */
+ SLONGLONG increment; /* increment value */
+} VINFO;
+
+static SWORD **Samples;
+static VINFO *vinf=NULL,*vnf;
+static long tickleft,samplesthatfit,vc_memory=0;
+static int vc_softchn;
+static SLONGLONG idxsize,idxlpos,idxlend;
+static SLONG *vc_tickbuf=NULL;
+static UWORD vc_mode;
+
+#ifdef _MSC_VER
+/* Weird bug in compiler */ /* FIXME is this still needed? */
+typedef void (*MikMod_callback_t)(unsigned char *data, size_t len);
+#endif
+
+/* Reverb control variables */
+
+static int RVc1, RVc2, RVc3, RVc4, RVc5, RVc6, RVc7, RVc8;
+static ULONG RVRindex;
+
+/* For Mono or Left Channel */
+static SLONG *RVbufL1=NULL,*RVbufL2=NULL,*RVbufL3=NULL,*RVbufL4=NULL,
+ *RVbufL5=NULL,*RVbufL6=NULL,*RVbufL7=NULL,*RVbufL8=NULL;
+
+/* For Stereo only (Right Channel) */
+static SLONG *RVbufR1=NULL,*RVbufR2=NULL,*RVbufR3=NULL,*RVbufR4=NULL,
+ *RVbufR5=NULL,*RVbufR6=NULL,*RVbufR7=NULL,*RVbufR8=NULL;
+
+#ifdef NATIVE_64BIT_INT
+#define NATIVE SLONGLONG
+#else
+#define NATIVE SLONG
+#endif
+
+/*========== 32 bit sample mixers - only for 32 bit platforms */
+#ifndef NATIVE_64BIT_INT
+
+static SLONG Mix32MonoNormal(const SWORD* const srce,SLONG* dest,SLONG idx,SLONG increment,SLONG todo)
+{
+ SWORD sample=0;
+ SLONG i,f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)( (((SLONG)(srce[i]*(FRACMASK+1L-f)) +
+ ((SLONG)srce[i+1]*f)) >> FRACBITS));
+ idx+=increment;
+
+ if(vnf->rampvol) {
+ *dest++ += (long)(
+ ( ( (SLONG)(vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol)) ) *
+ (SLONG)sample ) >> CLICK_SHIFT );
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ *dest++ += (long)(
+ ( ( ((SLONG)vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONG)sample ) +
+ (vnf->lastvalL*vnf->click) ) >> CLICK_SHIFT );
+ vnf->click--;
+ } else
+ *dest++ +=vnf->lvolsel*sample;
+ }
+ vnf->lastvalL=vnf->lvolsel * sample;
+
+ return idx;
+}
+
+static SLONG Mix32StereoNormal(const SWORD* const srce,SLONG* dest,SLONG idx,SLONG increment,ULONG todo)
+{
+ SWORD sample=0;
+ SLONG i,f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONG)srce[i+1] * f)) >> FRACBITS));
+ idx += increment;
+
+ if(vnf->rampvol) {
+ *dest++ += (long)(
+ ( ( ((SLONG)vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONG)sample ) >> CLICK_SHIFT );
+ *dest++ += (long)(
+ ( ( ((SLONG)vnf->oldrvol*vnf->rampvol) +
+ (vnf->rvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONG)sample ) >> CLICK_SHIFT );
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ *dest++ += (long)(
+ ( ( (SLONG)(vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONG)sample ) + (vnf->lastvalL * vnf->click) )
+ >> CLICK_SHIFT );
+ *dest++ += (long)(
+ ( ( ((SLONG)vnf->rvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONG)sample ) + (vnf->lastvalR * vnf->click) )
+ >> CLICK_SHIFT );
+ vnf->click--;
+ } else {
+ *dest++ +=vnf->lvolsel*sample;
+ *dest++ +=vnf->rvolsel*sample;
+ }
+ }
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->rvolsel*sample;
+
+ return idx;
+}
+
+static SLONG Mix32StereoSurround(const SWORD* const srce,SLONG* dest,SLONG idx,SLONG increment,ULONG todo)
+{
+ SWORD sample=0;
+ long whoop;
+ SLONG i, f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONG)srce[i+1]*f)) >> FRACBITS));
+ idx+=increment;
+
+ if(vnf->rampvol) {
+ whoop=(long)(
+ ( ( (SLONG)(vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol)) ) *
+ (SLONG)sample) >> CLICK_SHIFT );
+ *dest++ +=whoop;
+ *dest++ -=whoop;
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ whoop = (long)(
+ ( ( ((SLONG)vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONG)sample) +
+ (vnf->lastvalL * vnf->click) ) >> CLICK_SHIFT );
+ *dest++ +=whoop;
+ *dest++ -=whoop;
+ vnf->click--;
+ } else {
+ *dest++ +=vnf->lvolsel*sample;
+ *dest++ -=vnf->lvolsel*sample;
+ }
+ }
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->lvolsel*sample;
+
+ return idx;
+}
+#endif
+
+/*========== 64 bit mixers */
+
+static SLONGLONG MixMonoNormal(const SWORD* const srce,SLONG* dest,SLONGLONG idx,SLONGLONG increment,SLONG todo)
+{
+ SWORD sample=0;
+ SLONGLONG i,f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)((((SLONGLONG)(srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1]*f)) >> FRACBITS));
+ idx+=increment;
+
+ if(vnf->rampvol) {
+ *dest++ += (long)(
+ ( ( (SLONGLONG)(vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol)) ) *
+ (SLONGLONG)sample ) >> CLICK_SHIFT );
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample ) +
+ (vnf->lastvalL*vnf->click) ) >> CLICK_SHIFT );
+ vnf->click--;
+ } else
+ *dest++ +=vnf->lvolsel*sample;
+ }
+ vnf->lastvalL=vnf->lvolsel * sample;
+
+ return idx;
+}
+
+/* Slowest part... */
+
+#if defined HAVE_SSE2 || defined HAVE_ALTIVEC
+
+static __inline SWORD GetSample(const SWORD* const srce, SLONGLONG idx)
+{
+ SLONGLONG i=idx>>FRACBITS;
+ SLONGLONG f=idx&FRACMASK;
+ return (SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1] * f)) >> FRACBITS));
+}
+
+static SLONGLONG MixSIMDStereoNormal(const SWORD* const srce,SLONG* dest,SLONGLONG idx,SLONGLONG increment,ULONG todo)
+{
+ SWORD vol[8] = {vnf->lvolsel, vnf->rvolsel};
+ SWORD sample=0;
+ SLONG remain = todo;
+
+ /* Dest can be misaligned */
+ while(!IS_ALIGNED_16(dest)) {
+ sample=srce[idx >> FRACBITS];
+ idx += increment;
+ *dest++ += vol[0] * sample;
+ *dest++ += vol[1] * sample;
+ todo--;
+ if(!todo) goto end;
+ }
+
+ /* Srce is always aligned */
+
+#if defined HAVE_SSE2
+ remain = todo&3;
+ {
+ __m128i v0 = _mm_set_epi16(0, vol[1],
+ 0, vol[0],
+ 0, vol[1],
+ 0, vol[0]);
+ for(todo>>=2;todo; todo--)
+ {
+ SWORD s0 = GetSample(srce, idx);
+ SWORD s1 = GetSample(srce, idx += increment);
+ SWORD s2 = GetSample(srce, idx += increment);
+ SWORD s3 = GetSample(srce, idx += increment);
+ __m128i v1 = _mm_set_epi16(0, s1, 0, s1, 0, s0, 0, s0);
+ __m128i v2 = _mm_set_epi16(0, s3, 0, s3, 0, s2, 0, s2);
+ __m128i v3 = _mm_load_si128((__m128i*)(dest+0));
+ __m128i v4 = _mm_load_si128((__m128i*)(dest+4));
+ _mm_store_si128((__m128i*)(dest+0), _mm_add_epi32(v3, _mm_madd_epi16(v0, v1)));
+ _mm_store_si128((__m128i*)(dest+4), _mm_add_epi32(v4, _mm_madd_epi16(v0, v2)));
+ dest+=8;
+ idx += increment;
+ }
+ }
+
+#elif defined HAVE_ALTIVEC
+ remain = todo&3;
+ {
+ SWORD s[8];
+ vector signed short r0 = vec_ld(0, vol);
+ vector signed short v0 = vec_perm(r0, r0, (vector unsigned char)(0, 1, /* l */
+ 0, 1, /* l */
+ 2, 3, /* r */
+ 2, 1, /* r */
+ 0, 1, /* l */
+ 0, 1, /* l */
+ 2, 3, /* r */
+ 2, 3 /* r */
+ ));
+
+ for(todo>>=2;todo; todo--)
+ {
+ vector short int r1;
+ vector signed short v1, v2;
+ vector signed int v3, v4, v5, v6;
+
+ /* Load constants */
+ s[0] = GetSample(srce, idx);
+ s[1] = GetSample(srce, idx += increment);
+ s[2] = GetSample(srce, idx += increment);
+ s[3] = GetSample(srce, idx += increment);
+ s[4] = 0;
+
+ r1 = vec_ld(0, s);
+ v1 = vec_perm(r1, r1, (vector unsigned char)
+ (0*2, 0*2+1, /* s0 */
+ 4*2, 4*2+1, /* 0 */
+ 0*2, 0*2+1, /* s0 */
+ 4*2, 4*2+1, /* 0 */
+ 1*2, 1*2+1, /* s1 */
+ 4*2, 4*2+1, /* 0 */
+ 1*2, 1*2+1, /* s1 */
+ 4*2, 4*2+1 /* 0 */
+ ) );
+ v2 = vec_perm(r1, r1, (vector unsigned char)
+ (2*2, 2*2+1, /* s2 */
+ 4*2, 4*2+1, /* 0 */
+ 2*2, 2*2+1, /* s2 */
+ 4*2, 4*2+1, /* 0 */
+ 3*2, 3*2+1, /* s3 */
+ 4*2, 4*2+1, /* 0 */
+ 3*2, 3*2+1, /* s3 */
+ 4*2, 4*2+1 /* 0 */
+ ) );
+
+ v3 = vec_ld(0, dest);
+ v4 = vec_ld(0x10, dest);
+ v5 = vec_mule(v0, v1);
+ v6 = vec_mule(v0, v2);
+
+ vec_st(vec_add(v3, v5), 0, dest);
+ vec_st(vec_add(v4, v6), 0x10, dest);
+
+ dest+=8;
+ idx += increment;
+ }
+ }
+#endif /* HAVE_ALTIVEC */
+
+ /* Remaining bits */
+ while(remain--) {
+ sample=GetSample(srce, idx);
+ idx+= increment;
+ *dest++ += vol[0] * sample;
+ *dest++ += vol[1] * sample;
+ }
+end:
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->rvolsel*sample;
+ return idx;
+}
+
+static SLONGLONG MixStereoNormal(const SWORD* const srce,SLONG* dest,SLONGLONG idx,SLONGLONG increment,ULONG todo)
+{
+ SWORD sample=0;
+ SLONGLONG i,f;
+
+ if (vnf->rampvol)
+ while(todo) {
+ todo--;
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1] * f)) >> FRACBITS));
+ idx += increment;
+
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONGLONG)sample ) >> CLICK_SHIFT );
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->oldrvol*vnf->rampvol) +
+ (vnf->rvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONGLONG)sample ) >> CLICK_SHIFT );
+ vnf->rampvol--;
+
+ if (!vnf->rampvol)
+ break;
+ }
+
+ if (vnf->click)
+ while(todo) {
+ todo--;
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1] * f)) >> FRACBITS));
+ idx += increment;
+
+ *dest++ += (long)(
+ ( ( (SLONGLONG)(vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample ) + (vnf->lastvalL * vnf->click) )
+ >> CLICK_SHIFT );
+
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->rvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample ) + (vnf->lastvalR * vnf->click) )
+ >> CLICK_SHIFT );
+ vnf->click--;
+
+ if (!vnf->click)
+ break;
+ }
+
+ if (todo)
+ {
+ if (md_mode & DMODE_SIMDMIXER) {
+ return MixSIMDStereoNormal(srce, dest, idx, increment, todo);
+ }
+ while(todo)
+ {
+ i=idx>>FRACBITS,
+ f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1] * f)) >> FRACBITS));
+ idx += increment;
+
+ *dest++ +=vnf->lvolsel*sample;
+ *dest++ +=vnf->rvolsel*sample;
+ todo--;
+ }
+ }
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->rvolsel*sample;
+
+ return idx;
+}
+
+#else /* HAVE_SSE2 || HAVE_ALTIVEC */
+static SLONGLONG MixStereoNormal(const SWORD* const srce,SLONG* dest,SLONGLONG idx,SLONGLONG increment,ULONG todo)
+{
+ SWORD sample=0;
+ SLONGLONG i,f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1] * f)) >> FRACBITS));
+ idx += increment;
+
+ if(vnf->rampvol) {
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONGLONG)sample ) >> CLICK_SHIFT );
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->oldrvol*vnf->rampvol) +
+ (vnf->rvolsel*(CLICK_BUFFER-vnf->rampvol))
+ ) * (SLONGLONG)sample ) >> CLICK_SHIFT );
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ *dest++ += (long)(
+ ( ( (SLONGLONG)(vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample ) + (vnf->lastvalL * vnf->click) )
+ >> CLICK_SHIFT );
+ *dest++ += (long)(
+ ( ( ((SLONGLONG)vnf->rvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample ) + (vnf->lastvalR * vnf->click) )
+ >> CLICK_SHIFT );
+ vnf->click--;
+ } else {
+ *dest++ +=vnf->lvolsel*sample;
+ *dest++ +=vnf->rvolsel*sample;
+ }
+ }
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->rvolsel*sample;
+
+ return idx;
+}
+#endif /* HAVE_SSE2 || HAVE_ALTIVEC */
+
+
+static SLONGLONG MixStereoSurround(const SWORD* srce,SLONG* dest,SLONGLONG idx,SLONGLONG increment,ULONG todo)
+{
+ SWORD sample=0;
+ long whoop;
+ SLONGLONG i, f;
+
+ while(todo--) {
+ i=idx>>FRACBITS,f=idx&FRACMASK;
+ sample=(SWORD)(((((SLONGLONG)srce[i]*(FRACMASK+1L-f)) +
+ ((SLONGLONG)srce[i+1]*f)) >> FRACBITS));
+ idx+=increment;
+
+ if(vnf->rampvol) {
+ whoop=(long)(
+ ( ( (SLONGLONG)(vnf->oldlvol*vnf->rampvol) +
+ (vnf->lvolsel*(CLICK_BUFFER-vnf->rampvol)) ) *
+ (SLONGLONG)sample) >> CLICK_SHIFT );
+ *dest++ +=whoop;
+ *dest++ -=whoop;
+ vnf->rampvol--;
+ } else
+ if(vnf->click) {
+ whoop = (long)(
+ ( ( ((SLONGLONG)vnf->lvolsel*(CLICK_BUFFER-vnf->click)) *
+ (SLONGLONG)sample) +
+ (vnf->lastvalL * vnf->click) ) >> CLICK_SHIFT );
+ *dest++ +=whoop;
+ *dest++ -=whoop;
+ vnf->click--;
+ } else {
+ *dest++ +=vnf->lvolsel*sample;
+ *dest++ -=vnf->lvolsel*sample;
+ }
+ }
+ vnf->lastvalL=vnf->lvolsel*sample;
+ vnf->lastvalR=vnf->lvolsel*sample;
+
+ return idx;
+}
+
+static void(*Mix32toFP)(float* dste,const SLONG *srce,NATIVE count);
+static void(*Mix32to16)(SWORD* dste,const SLONG *srce,NATIVE count);
+static void(*Mix32to8)(SBYTE* dste,const SLONG *srce,NATIVE count);
+static void(*MixReverb)(SLONG *srce,NATIVE count);
+
+/* Reverb macros */
+#define COMPUTE_LOC(n) loc##n = RVRindex % RVc##n
+#define COMPUTE_LECHO(n) RVbufL##n [loc##n ]=speedup+((ReverbPct*RVbufL##n [loc##n ])>>7)
+#define COMPUTE_RECHO(n) RVbufR##n [loc##n ]=speedup+((ReverbPct*RVbufR##n [loc##n ])>>7)
+
+static void MixReverb_Normal(SLONG *srce,NATIVE count)
+{
+ NATIVE speedup;
+ int ReverbPct;
+ unsigned int loc1,loc2,loc3,loc4,loc5,loc6,loc7,loc8;
+
+ ReverbPct=58+(md_reverb*4);
+
+ COMPUTE_LOC(1); COMPUTE_LOC(2); COMPUTE_LOC(3); COMPUTE_LOC(4);
+ COMPUTE_LOC(5); COMPUTE_LOC(6); COMPUTE_LOC(7); COMPUTE_LOC(8);
+
+ while(count--) {
+ /* Compute the left channel echo buffers */
+ speedup = *srce >> 3;
+
+ COMPUTE_LECHO(1); COMPUTE_LECHO(2); COMPUTE_LECHO(3); COMPUTE_LECHO(4);
+ COMPUTE_LECHO(5); COMPUTE_LECHO(6); COMPUTE_LECHO(7); COMPUTE_LECHO(8);
+
+ /* Prepare to compute actual finalized data */
+ RVRindex++;
+
+ COMPUTE_LOC(1); COMPUTE_LOC(2); COMPUTE_LOC(3); COMPUTE_LOC(4);
+ COMPUTE_LOC(5); COMPUTE_LOC(6); COMPUTE_LOC(7); COMPUTE_LOC(8);
+
+ /* left channel */
+ *srce++ +=RVbufL1[loc1]-RVbufL2[loc2]+RVbufL3[loc3]-RVbufL4[loc4]+
+ RVbufL5[loc5]-RVbufL6[loc6]+RVbufL7[loc7]-RVbufL8[loc8];
+ }
+}
+
+static void MixReverb_Stereo(SLONG *srce,NATIVE count)
+{
+ NATIVE speedup;
+ int ReverbPct;
+ unsigned int loc1,loc2,loc3,loc4,loc5,loc6,loc7,loc8;
+
+ ReverbPct=58+(md_reverb*4);
+
+ COMPUTE_LOC(1); COMPUTE_LOC(2); COMPUTE_LOC(3); COMPUTE_LOC(4);
+ COMPUTE_LOC(5); COMPUTE_LOC(6); COMPUTE_LOC(7); COMPUTE_LOC(8);
+
+ while(count--) {
+ /* Compute the left channel echo buffers */
+ speedup = *srce >> 3;
+
+ COMPUTE_LECHO(1); COMPUTE_LECHO(2); COMPUTE_LECHO(3); COMPUTE_LECHO(4);
+ COMPUTE_LECHO(5); COMPUTE_LECHO(6); COMPUTE_LECHO(7); COMPUTE_LECHO(8);
+
+ /* Compute the right channel echo buffers */
+ speedup = srce[1] >> 3;
+
+ COMPUTE_RECHO(1); COMPUTE_RECHO(2); COMPUTE_RECHO(3); COMPUTE_RECHO(4);
+ COMPUTE_RECHO(5); COMPUTE_RECHO(6); COMPUTE_RECHO(7); COMPUTE_RECHO(8);
+
+ /* Prepare to compute actual finalized data */
+ RVRindex++;
+
+ COMPUTE_LOC(1); COMPUTE_LOC(2); COMPUTE_LOC(3); COMPUTE_LOC(4);
+ COMPUTE_LOC(5); COMPUTE_LOC(6); COMPUTE_LOC(7); COMPUTE_LOC(8);
+
+ /* left channel */
+ *srce++ +=RVbufL1[loc1]-RVbufL2[loc2]+RVbufL3[loc3]-RVbufL4[loc4]+
+ RVbufL5[loc5]-RVbufL6[loc6]+RVbufL7[loc7]-RVbufL8[loc8];
+
+ /* right channel */
+ *srce++ +=RVbufR1[loc1]-RVbufR2[loc2]+RVbufR3[loc3]-RVbufR4[loc4]+
+ RVbufR5[loc5]-RVbufR6[loc6]+RVbufR7[loc7]-RVbufR8[loc8];
+ }
+}
+
+static void (*MixLowPass)(SLONG* srce,NATIVE count);
+
+static int nLeftNR, nRightNR;
+
+static void MixLowPass_Stereo(SLONG* srce,NATIVE count)
+{
+ int n1 = nLeftNR, n2 = nRightNR;
+ SLONG *pnr = srce;
+ int nr=count;
+ for (; nr; nr--)
+ {
+ int vnr = pnr[0] >> 1;
+ pnr[0] = vnr + n1;
+ n1 = vnr;
+ vnr = pnr[1] >> 1;
+ pnr[1] = vnr + n2;
+ n2 = vnr;
+ pnr += 2;
+ }
+ nLeftNR = n1;
+ nRightNR = n2;
+}
+
+static void MixLowPass_Normal(SLONG* srce,NATIVE count)
+{
+ int n1 = nLeftNR;
+ SLONG *pnr = srce;
+ int nr=count;
+ for (; nr; nr--)
+ {
+ int vnr = pnr[0] >> 1;
+ pnr[0] = vnr + n1;
+ n1 = vnr;
+ pnr ++;
+ }
+ nLeftNR = n1;
+}
+
+/* Mixing macros */
+#define EXTRACT_SAMPLE_FP(var,attenuation) var=*srce++*((1.0f / 32768.0f) / (MAXVOL_FACTOR*attenuation))
+#define CHECK_SAMPLE_FP(var,bound) var=(var>bound)?bound:(var<-bound)?-bound:var
+
+static void Mix32ToFP_Normal(float* dste,const SLONG *srce,NATIVE count)
+{
+ float x1,x2,tmpx;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx=0.0f;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE_FP(x1,1.0f); EXTRACT_SAMPLE_FP(x2,1.0f);
+
+ CHECK_SAMPLE_FP(x1,1.0f); CHECK_SAMPLE_FP(x2,1.0f);
+
+ tmpx+=x1+x2;
+ }
+ *dste++ =tmpx*(1.0f/SAMPLING_FACTOR);
+ }
+}
+
+static void Mix32ToFP_Stereo(float* dste,const SLONG *srce,NATIVE count)
+{
+ float x1,x2,x3,x4,tmpx,tmpy;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx=tmpy=0.0f;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE_FP(x1,1.0f); EXTRACT_SAMPLE_FP(x2,1.0f);
+ EXTRACT_SAMPLE_FP(x3,1.0f); EXTRACT_SAMPLE_FP(x4,1.0f);
+
+ CHECK_SAMPLE_FP(x1,1.0f); CHECK_SAMPLE_FP(x2,1.0f);
+ CHECK_SAMPLE_FP(x3,1.0f); CHECK_SAMPLE_FP(x4,1.0f);
+
+ tmpx+=x1+x3;
+ tmpy+=x2+x4;
+ }
+ *dste++ =tmpx*(1.0f/SAMPLING_FACTOR);
+ *dste++ =tmpy*(1.0f/SAMPLING_FACTOR);
+ }
+}
+
+/* Mixing macros */
+#define EXTRACT_SAMPLE(var,attenuation) var=*srce++/(MAXVOL_FACTOR*attenuation)
+#define CHECK_SAMPLE(var,bound) var=(var>=bound)?bound-1:(var<-bound)?-bound:var
+
+static void Mix32To16_Normal(SWORD* dste,const SLONG *srce,NATIVE count)
+{
+ NATIVE x1,x2,tmpx;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx=0;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE(x1,1); EXTRACT_SAMPLE(x2,1);
+
+ CHECK_SAMPLE(x1,32768); CHECK_SAMPLE(x2,32768);
+
+ tmpx+=x1+x2;
+ }
+ *dste++ =(SWORD)(tmpx/SAMPLING_FACTOR);
+ }
+}
+
+
+static void Mix32To16_Stereo(SWORD* dste,const SLONG *srce,NATIVE count)
+{
+ NATIVE x1,x2,x3,x4,tmpx,tmpy;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx=tmpy=0;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE(x1,1); EXTRACT_SAMPLE(x2,1);
+ EXTRACT_SAMPLE(x3,1); EXTRACT_SAMPLE(x4,1);
+
+ CHECK_SAMPLE(x1,32768); CHECK_SAMPLE(x2,32768);
+ CHECK_SAMPLE(x3,32768); CHECK_SAMPLE(x4,32768);
+
+ tmpx+=x1+x3;
+ tmpy+=x2+x4;
+ }
+ *dste++ =(SWORD)(tmpx/SAMPLING_FACTOR);
+ *dste++ =(SWORD)(tmpy/SAMPLING_FACTOR);
+ }
+}
+
+static void Mix32To8_Normal(SBYTE* dste,const SLONG *srce,NATIVE count)
+{
+ NATIVE x1,x2,tmpx;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx = 0;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE(x1,256); EXTRACT_SAMPLE(x2,256);
+
+ CHECK_SAMPLE(x1,128); CHECK_SAMPLE(x2,128);
+
+ tmpx+=x1+x2;
+ }
+ *dste++ = (SBYTE)((tmpx/SAMPLING_FACTOR)+128);
+ }
+}
+
+static void Mix32To8_Stereo(SBYTE* dste,const SLONG *srce,NATIVE count)
+{
+ NATIVE x1,x2,x3,x4,tmpx,tmpy;
+ int i;
+
+ for(count/=SAMPLING_FACTOR;count;count--) {
+ tmpx=tmpy=0;
+
+ for(i=SAMPLING_FACTOR/2;i;i--) {
+ EXTRACT_SAMPLE(x1,256); EXTRACT_SAMPLE(x2,256);
+ EXTRACT_SAMPLE(x3,256); EXTRACT_SAMPLE(x4,256);
+
+ CHECK_SAMPLE(x1,128); CHECK_SAMPLE(x2,128);
+ CHECK_SAMPLE(x3,128); CHECK_SAMPLE(x4,128);
+
+ tmpx+=x1+x3;
+ tmpy+=x2+x4;
+ }
+ *dste++ =(SBYTE)((tmpx/SAMPLING_FACTOR)+128);
+ *dste++ =(SBYTE)((tmpy/SAMPLING_FACTOR)+128);
+ }
+}
+
+#if defined HAVE_SSE2
+#define SHIFT_MIX_TO_16 (BITSHIFT + 16 - 16)
+/* TEST: Ok */
+static void Mix32To16_Stereo_SIMD_4Tap(SWORD* dste, const SLONG* srce, NATIVE count)
+{
+ int remain = count;
+
+ /* Check unaligned dste buffer. srce is always aligned. */
+ while(!IS_ALIGNED_16(dste))
+ {
+ Mix32To16_Stereo(dste, srce, SAMPLING_FACTOR);
+ dste+=2;
+ srce+=8;
+ count--;
+ if(!count) return;
+ }
+
+ /* dste and srce aligned. srce is always aligned. */
+ remain = count & 15;
+ /* count / 2 for 1 sample */
+
+ for(count>>=4;count;count--)
+ {
+ /* Load 32bit sample. 1st average */
+ __m128i v0 = _mm_add_epi32(
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+0)), SHIFT_MIX_TO_16),
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+4)), SHIFT_MIX_TO_16)
+ ); /* v0: s0.l+s2.l | s0.r+s2.r | s1.l+s3.l | s1.r+s3.r */
+
+ /* 2nd average (s0.l+s2.l+s1.l+s3.l / 4, s0.r+s2.r+s1.r+s3.r / 4). Upper 64bit is unused (1 stereo sample) */
+ __m128i v1 = _mm_srai_epi32(_mm_add_epi32(v0, mm_hiqq(v0)), 2);
+ /* v1: s0.l+s2.l / 4 | s0.r+s2.r / 4 | s1.l+s3.l+s0.l+s2.l / 4 | s1.r+s3.r+s0.r+s2.r / 4 */
+
+ __m128i v2 = _mm_add_epi32(
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+8)), SHIFT_MIX_TO_16),
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+12)), SHIFT_MIX_TO_16)
+ ); /* v2: s4.l+s6.l | s4.r+s6.r | s5.l+s7.l | s5.r+s7.r */
+
+ __m128i v3 = _mm_srai_epi32(_mm_add_epi32(v2, mm_hiqq(v2)), 2); /* Upper 64bit is unused */
+ /* v3: s4.l+s6.l /4 | s4.r+s6.r / 4| s5.l+s7.l+s4.l+s6.l / 4 | s5.r+s7.r+s4.r+s6.l / 4 */
+
+ /* pack two stereo samples in one */
+ __m128i v4 = _mm_unpacklo_epi64(v1, v3); /* v4 = avg(s0,s1,s2,s3) | avg(s4,s5,s6,s7) */
+
+ __m128i v6;
+
+ /* Load 32bit sample. 1st average (s0.l+s2.l, s0.r+s2.r, s1.l+s3.l, s1.r+s3.r) */
+ v0 = _mm_add_epi32(
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+16)), SHIFT_MIX_TO_16),
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+20)), SHIFT_MIX_TO_16)
+ ); /* 128bit = 2 stereo samples */
+
+ /* 2nd average (s0.l+s2.l+s1.l+s3.l / 4, s0.r+s2.r+s1.r+s3.r / 4). Upper 64bit is unused (1 stereo sample) */
+ v1 = _mm_srai_epi32(_mm_add_epi32(v0, mm_hiqq(v0)), 2);
+
+ v2 = _mm_add_epi32(
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+24)), SHIFT_MIX_TO_16),
+ _mm_srai_epi32(_mm_loadu_si128((__m128i const *)(srce+28)), SHIFT_MIX_TO_16)
+ );
+
+ v3 = _mm_srai_epi32(_mm_add_epi32(v2, mm_hiqq(v2)), 2); /* Upper 64bit is unused */
+
+ /* pack two stereo samples in one */
+ v6 = _mm_unpacklo_epi64(v1, v3); /* v6 = avg(s8,s9,s10,s11) | avg(s12,s13,s14,s15) */
+
+ _mm_store_si128((__m128i*)dste, _mm_packs_epi32(v4, v6)); /* 4 interpolated stereo sample 32bit to 4 */
+
+ dste+=8;
+ srce+=32; /* 32 = 4 * 8 */
+ }
+
+ /* FIXME: THIS PART WRITES PAST DST !! */
+ if (remain)
+ {
+ Mix32To16_Stereo(dste, srce, remain);
+ }
+}
+
+#elif defined HAVE_ALTIVEC
+#define SHIFT_MIX_TO_16 vec_splat_u32(BITSHIFT + 16 - 16)
+/* TEST: Ok */
+static void Mix32To16_Stereo_SIMD_4Tap(SWORD* dste, const SLONG* srce, NATIVE count)
+{
+ int remain = count;
+
+ /* Check unaligned dste buffer. srce is always aligned. */
+ while(!IS_ALIGNED_16(dste))
+ {
+ Mix32To16_Stereo(dste, srce, SAMPLING_FACTOR);
+ dste+=2;
+ srce+=8;
+ count--;
+ if(!count) return;
+ }
+
+ /* dste and srce aligned. srce is always aligned. */
+ remain = count & 15;
+ for(count>>=4;count;count--)
+ {
+ /* Load 32bit sample. 1st average (s0.l+s2.l, s0.r+s2.r, s1.l+s3.l, s1.r+s3.r) */
+ vector signed int v0 = vec_add(
+ vec_sra(vec_ld(0, srce), SHIFT_MIX_TO_16), /* 128bit = 2 stereo samples */
+ vec_sra(vec_ld(0x10, srce), SHIFT_MIX_TO_16)
+ ); /* 128bit = 2 stereo samples */
+
+ /* 2nd average (s0.l+s2.l+s1.l+s3.l / 4, s0.r+s2.r+s1.r+s3.r / 4). Upper 64bit is unused (1 stereo sample) */
+ vector signed int v1 = vec_sra(vec_add(v0, vec_hiqq(v0)), vec_splat_u32(2));
+
+ vector signed int v2 = vec_add(
+ vec_sra(vec_ld(0x20, srce), SHIFT_MIX_TO_16),
+ vec_sra(vec_ld(0x30, srce), SHIFT_MIX_TO_16)
+ );
+
+ vector signed int v3 = vec_sra(vec_add(v2, vec_hiqq(v2)), vec_splat_u32(2)); /* Upper 64bit is unused */
+
+ /* pack two stereo samples in one */
+ vector signed int v6, v4 = vec_unpacklo(v1, v3); /* v4 = lo64(v1) | lo64(v3) */
+
+ /* Load 32bit sample. 1st average (s0.l+s2.l, s0.r+s2.r, s1.l+s3.l, s1.r+s3.r) */
+ v0 = vec_add(
+ vec_sra(vec_ld(0x40, srce), SHIFT_MIX_TO_16), /* 128bit = 2 stereo samples */
+ vec_sra(vec_ld(0x50, srce), SHIFT_MIX_TO_16)
+ ); /* 128bit = 2 stereo samples */
+
+ /* 2nd average (s0.l+s2.l+s1.l+s3.l / 4, s0.r+s2.r+s1.r+s3.r / 4). Upper 64bit is unused (1 stereo sample) */
+ v1 = vec_sra(vec_add(v0, vec_hiqq(v0)), vec_splat_u32(2));
+
+ v2 = vec_add(
+ vec_sra(vec_ld(0x60, srce), SHIFT_MIX_TO_16),
+ vec_sra(vec_ld(0x70, srce), SHIFT_MIX_TO_16)
+ );
+
+ v3 = vec_sra(vec_add(v2, vec_hiqq(v2)), vec_splat_u32(2)); /* Upper 64bit is unused */
+
+ /* pack two stereo samples in one */
+ v6 = vec_unpacklo(v1, v3);
+
+ vec_st(vec_packs(v4, v6), 0, dste); /* 4 interpolated stereo sample 32bit to 4 interpolated stereo sample 16bit + saturation */
+
+ dste+=8;
+ srce+=32; /* 32 = 4 * 8 */
+ }
+
+ if (remain)
+ {
+ Mix32To16_Stereo(dste, srce, remain);
+ }
+}
+
+#endif
+
+
+static void AddChannel(SLONG* ptr,NATIVE todo)
+{
+ SLONGLONG end,done;
+ SWORD *s;
+
+ if(!(s=Samples[vnf->handle])) {
+ vnf->current = vnf->active = 0;
+ vnf->lastvalL = vnf->lastvalR = 0;
+ return;
+ }
+
+ /* update the 'current' index so the sample loops, or stops playing if it
+ reached the end of the sample */
+ while(todo>0) {
+ SLONGLONG endpos;
+
+ if(vnf->flags & SF_REVERSE) {
+ /* The sample is playing in reverse */
+ if((vnf->flags&SF_LOOP)&&(vnf->current<idxlpos)) {
+ /* the sample is looping and has reached the loopstart index */
+ if(vnf->flags & SF_BIDI) {
+ /* sample is doing bidirectional loops, so 'bounce' the
+ current index against the idxlpos */
+ vnf->current = idxlpos+(idxlpos-vnf->current);
+ vnf->flags &= ~SF_REVERSE;
+ vnf->increment = -vnf->increment;
+ } else
+ /* normal backwards looping, so set the current position to
+ loopend index */
+ vnf->current=idxlend-(idxlpos-vnf->current);
+ } else {
+ /* the sample is not looping, so check if it reached index 0 */
+ if(vnf->current < 0) {
+ /* playing index reached 0, so stop playing this sample */
+ vnf->current = vnf->active = 0;
+ break;
+ }
+ }
+ } else {
+ /* The sample is playing forward */
+ if((vnf->flags & SF_LOOP) &&
+ (vnf->current >= idxlend)) {
+ /* the sample is looping, check the loopend index */
+ if(vnf->flags & SF_BIDI) {
+ /* sample is doing bidirectional loops, so 'bounce' the
+ current index against the idxlend */
+ vnf->flags |= SF_REVERSE;
+ vnf->increment = -vnf->increment;
+ vnf->current = idxlend-(vnf->current-idxlend);
+ } else
+ /* normal backwards looping, so set the current position
+ to loopend index */
+ vnf->current=idxlpos+(vnf->current-idxlend);
+ } else {
+ /* sample is not looping, so check if it reached the last
+ position */
+ if(vnf->current >= idxsize) {
+ /* yes, so stop playing this sample */
+ vnf->current = vnf->active = 0;
+ break;
+ }
+ }
+ }
+
+ end=(vnf->flags&SF_REVERSE)?(vnf->flags&SF_LOOP)?idxlpos:0:
+ (vnf->flags&SF_LOOP)?idxlend:idxsize;
+
+ /* if the sample is not blocked... */
+ if((end==vnf->current)||(!vnf->increment))
+ done=0;
+ else {
+ done=MIN((end-vnf->current)/vnf->increment+1,todo);
+ if(done<0) done=0;
+ }
+
+ if(!done) {
+ vnf->active = 0;
+ break;
+ }
+
+ endpos=vnf->current+done*vnf->increment;
+
+ if(vnf->vol || vnf->rampvol) {
+#ifndef NATIVE_64BIT_INT
+ /* use the 32 bit mixers as often as we can (they're much faster) */
+ if((vnf->current<0x7fffffff)&&(endpos<0x7fffffff)) {
+ if(vc_mode & DMODE_STEREO) {
+ if((vnf->pan==PAN_SURROUND)&&(vc_mode&DMODE_SURROUND))
+ vnf->current=(SLONGLONG)Mix32StereoSurround
+ (s,ptr,vnf->current,vnf->increment,done);
+ else
+ vnf->current=Mix32StereoNormal
+ (s,ptr,vnf->current,vnf->increment,done);
+ } else
+ vnf->current=Mix32MonoNormal
+ (s,ptr,vnf->current,vnf->increment,done);
+ }
+ else
+#endif
+ {
+ if(vc_mode & DMODE_STEREO) {
+ if((vnf->pan==PAN_SURROUND)&&(vc_mode&DMODE_SURROUND))
+ vnf->current=MixStereoSurround
+ (s,ptr,vnf->current,vnf->increment,done);
+ else
+ vnf->current=MixStereoNormal
+ (s,ptr,vnf->current,vnf->increment,done);
+ } else
+ vnf->current=MixMonoNormal
+ (s,ptr,vnf->current,vnf->increment,done);
+ }
+ } else {
+ vnf->lastvalL = vnf->lastvalR = 0;
+ /* update sample position */
+ vnf->current=endpos;
+ }
+
+ todo -= done;
+ ptr += (vc_mode & DMODE_STEREO)?(done<<1):done;
+ }
+}
+
+#define _IN_VIRTCH_
+
+#define VC1_SilenceBytes VC2_SilenceBytes
+#define VC1_WriteSamples VC2_WriteSamples
+#define VC1_WriteBytes VC2_WriteBytes
+#define VC1_Exit VC2_Exit
+#define VC1_VoiceSetVolume VC2_VoiceSetVolume
+#define VC1_VoiceGetVolume VC2_VoiceGetVolume
+#define VC1_VoiceSetPanning VC2_VoiceSetPanning
+#define VC1_VoiceGetPanning VC2_VoiceGetPanning
+#define VC1_VoiceSetFrequency VC2_VoiceSetFrequency
+#define VC1_VoiceGetFrequency VC2_VoiceGetFrequency
+#define VC1_VoicePlay VC2_VoicePlay
+#define VC1_VoiceStop VC2_VoiceStop
+#define VC1_VoiceStopped VC2_VoiceStopped
+#define VC1_VoiceGetPosition VC2_VoiceGetPosition
+#define VC1_SampleUnload VC2_SampleUnload
+#define VC1_SampleLoad VC2_SampleLoad
+#define VC1_SampleSpace VC2_SampleSpace
+#define VC1_SampleLength VC2_SampleLength
+#define VC1_VoiceRealVolume VC2_VoiceRealVolume
+
+#include "virtch_common.c"
+#undef _IN_VIRTCH_
+
+void VC2_WriteSamples(SBYTE* buf,ULONG todo)
+{
+ int left,portion=0;
+ SBYTE *buffer;
+ int t,pan,vol;
+
+ todo*=SAMPLING_FACTOR;
+
+ while(todo) {
+ if(!tickleft) {
+ if(vc_mode & DMODE_SOFT_MUSIC) md_player();
+ tickleft=(md_mixfreq*125L*SAMPLING_FACTOR)/(md_bpm*50L);
+ tickleft&=~(SAMPLING_FACTOR-1);
+ }
+ left = MIN(tickleft, todo);
+ buffer = buf;
+ tickleft -= left;
+ todo -= left;
+ buf += samples2bytes(left)/SAMPLING_FACTOR;
+
+ while(left) {
+ portion = MIN(left, samplesthatfit);
+ memset(vc_tickbuf,0,portion<<((vc_mode&DMODE_STEREO)?3:2));
+ for(t=0;t<vc_softchn;t++) {
+ vnf = &vinf[t];
+
+ if(vnf->kick) {
+ vnf->current=((SLONGLONG)(vnf->start))<<FRACBITS;
+ vnf->kick = 0;
+ vnf->active = 1;
+ vnf->click = CLICK_BUFFER;
+ vnf->rampvol = 0;
+ }
+
+ if(!vnf->frq) vnf->active = 0;
+
+ if(vnf->active) {
+ vnf->increment=((SLONGLONG)(vnf->frq)<<(FRACBITS-SAMPLING_SHIFT))
+ /md_mixfreq;
+ if(vnf->flags&SF_REVERSE) vnf->increment=-vnf->increment;
+ vol = vnf->vol; pan = vnf->pan;
+
+ vnf->oldlvol=vnf->lvolsel;vnf->oldrvol=vnf->rvolsel;
+ if(vc_mode & DMODE_STEREO) {
+ if(pan!=PAN_SURROUND) {
+ vnf->lvolsel=(vol*(PAN_RIGHT-pan))>>8;
+ vnf->rvolsel=(vol*pan)>>8;
+ } else {
+ vnf->lvolsel=vnf->rvolsel=(vol * 256L) / 480;
+ }
+ } else
+ vnf->lvolsel=vol;
+
+ idxsize=(vnf->size)?((SLONGLONG)(vnf->size)<<FRACBITS)-1:0;
+ idxlend=(vnf->repend)?((SLONGLONG)(vnf->repend)<<FRACBITS)-1:0;
+ idxlpos=(SLONGLONG)(vnf->reppos)<<FRACBITS;
+ AddChannel(vc_tickbuf,portion);
+ }
+ }
+
+ if(md_mode & DMODE_NOISEREDUCTION) {
+ MixLowPass(vc_tickbuf, portion);
+ }
+
+ if(md_reverb) {
+ if(md_reverb>15) md_reverb=15;
+ MixReverb(vc_tickbuf,portion);
+ }
+
+ if (vc_callback) {
+ vc_callback((unsigned char*)vc_tickbuf, portion);
+ }
+
+ if(vc_mode & DMODE_FLOAT)
+ Mix32toFP((float*)buffer,vc_tickbuf,portion);
+ else if(vc_mode & DMODE_16BITS)
+ Mix32to16((SWORD*)buffer,vc_tickbuf,portion);
+ else
+ Mix32to8((SBYTE*)buffer,vc_tickbuf,portion);
+
+ buffer += samples2bytes(portion) / SAMPLING_FACTOR;
+ left -= portion;
+ }
+ }
+}
+
+int VC2_Init(void)
+{
+ VC_SetupPointers();
+
+ if (!(md_mode&DMODE_HQMIXER))
+ return VC1_Init();
+
+ if(!(Samples=(SWORD**)MikMod_amalloc(MAXSAMPLEHANDLES*sizeof(SWORD*)))) {
+ _mm_errno = MMERR_INITIALIZING_MIXER;
+ return 1;
+ }
+ if(!vc_tickbuf) {
+ if(!(vc_tickbuf=(SLONG*)MikMod_amalloc((TICKLSIZE+32)*sizeof(SLONG)))) {
+ _mm_errno = MMERR_INITIALIZING_MIXER;
+ return 1;
+ }
+ }
+
+ if(md_mode & DMODE_STEREO) {
+ Mix32toFP = Mix32ToFP_Stereo;
+#if ((defined HAVE_ALTIVEC || defined HAVE_SSE2) && (SAMPLING_FACTOR == 4))
+ if (md_mode & DMODE_SIMDMIXER)
+ Mix32to16 = Mix32To16_Stereo_SIMD_4Tap;
+ else
+#endif
+ Mix32to16 = Mix32To16_Stereo;
+ Mix32to8 = Mix32To8_Stereo;
+ MixReverb = MixReverb_Stereo;
+ MixLowPass = MixLowPass_Stereo;
+ } else {
+ Mix32toFP = Mix32ToFP_Normal;
+ Mix32to16 = Mix32To16_Normal;
+ Mix32to8 = Mix32To8_Normal;
+ MixReverb = MixReverb_Normal;
+ MixLowPass = MixLowPass_Normal;
+ }
+
+ md_mode |= DMODE_INTERP;
+ vc_mode = md_mode;
+ return 0;
+}
+
+int VC2_PlayStart(void)
+{
+ md_mode|=DMODE_INTERP;
+
+ samplesthatfit = TICKLSIZE;
+ if(vc_mode & DMODE_STEREO) samplesthatfit >>= 1;
+ tickleft = 0;
+
+ RVc1 = (5000L * md_mixfreq) / (REVERBERATION * 10);
+ RVc2 = (5078L * md_mixfreq) / (REVERBERATION * 10);
+ RVc3 = (5313L * md_mixfreq) / (REVERBERATION * 10);
+ RVc4 = (5703L * md_mixfreq) / (REVERBERATION * 10);
+ RVc5 = (6250L * md_mixfreq) / (REVERBERATION * 10);
+ RVc6 = (6953L * md_mixfreq) / (REVERBERATION * 10);
+ RVc7 = (7813L * md_mixfreq) / (REVERBERATION * 10);
+ RVc8 = (8828L * md_mixfreq) / (REVERBERATION * 10);
+
+ if(!(RVbufL1=(SLONG*)MikMod_calloc((RVc1+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL2=(SLONG*)MikMod_calloc((RVc2+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL3=(SLONG*)MikMod_calloc((RVc3+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL4=(SLONG*)MikMod_calloc((RVc4+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL5=(SLONG*)MikMod_calloc((RVc5+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL6=(SLONG*)MikMod_calloc((RVc6+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL7=(SLONG*)MikMod_calloc((RVc7+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufL8=(SLONG*)MikMod_calloc((RVc8+1),sizeof(SLONG)))) return 1;
+
+ /* allocate reverb buffers for the right channel if in stereo mode only. */
+ if (vc_mode & DMODE_STEREO) {
+ if(!(RVbufR1=(SLONG*)MikMod_calloc((RVc1+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR2=(SLONG*)MikMod_calloc((RVc2+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR3=(SLONG*)MikMod_calloc((RVc3+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR4=(SLONG*)MikMod_calloc((RVc4+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR5=(SLONG*)MikMod_calloc((RVc5+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR6=(SLONG*)MikMod_calloc((RVc6+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR7=(SLONG*)MikMod_calloc((RVc7+1),sizeof(SLONG)))) return 1;
+ if(!(RVbufR8=(SLONG*)MikMod_calloc((RVc8+1),sizeof(SLONG)))) return 1;
+ }
+
+ RVRindex = 0;
+ return 0;
+}
+
+void VC2_PlayStop(void)
+{
+ MikMod_free(RVbufL1);
+ MikMod_free(RVbufL2);
+ MikMod_free(RVbufL3);
+ MikMod_free(RVbufL4);
+ MikMod_free(RVbufL5);
+ MikMod_free(RVbufL6);
+ MikMod_free(RVbufL7);
+ MikMod_free(RVbufL8);
+ MikMod_free(RVbufR1);
+ MikMod_free(RVbufR2);
+ MikMod_free(RVbufR3);
+ MikMod_free(RVbufR4);
+ MikMod_free(RVbufR5);
+ MikMod_free(RVbufR6);
+ MikMod_free(RVbufR7);
+ MikMod_free(RVbufR8);
+
+ RVbufL1=RVbufL2=RVbufL3=RVbufL4=RVbufL5=RVbufL6=RVbufL7=RVbufL8=NULL;
+ RVbufR1=RVbufR2=RVbufR3=RVbufR4=RVbufR5=RVbufR6=RVbufR7=RVbufR8=NULL;
+}
+
+int VC2_SetNumVoices(void)
+{
+ int t;
+
+ md_mode|=DMODE_INTERP;
+
+ if(!(vc_softchn=md_softchn)) return 0;
+
+ MikMod_free(vinf);
+ if(!(vinf=(VINFO*)MikMod_calloc(vc_softchn,sizeof(VINFO)))) return 1;
+
+ for(t=0;t<vc_softchn;t++) {
+ vinf[t].frq=10000;
+ vinf[t].pan=(t&1)?PAN_LEFT:PAN_RIGHT;
+ }
+
+ return 0;
+}
+
+#endif /* ! NO_HQMIXER */
+
+/* ex:set ts=4: */
projects / dosdemo / blobdiff