ref: 724a4caff868393ba0c0ba520033470824405c0e
dir: /src/ft2_mix.c/
#include <stdint.h>
#include <stdbool.h>
#include "ft2_header.h"
#include "ft2_mix.h"
#include "ft2_mix_macros.h"
/*
--------------------- fixed-point audio channel mixer ---------------------
This file has separate routines for EVERY possible sampling variation:
Interpolation, volume ramping, 8-bit, 16-bit, no loop, loop, bidi loop.
24 mixing routines in total.
Every voice has a function pointer set to the according mixing routine on
sample trigger (from replayer, but set in audio thread), using a function
pointer look-up table.
All voices are always cleared (thread safe) when changing any of the above
states from the GUI, so no problem there with deprecated cached function
pointers.
Mixing macros can be found in ft2_mix_macros.h.
Yes, this is a HUGE mess, and I hope you don't need to modify it.
If it's not broken, don't try to fix it!
*/
/* ----------------------------------------------------------------------- */
/* 8-BIT MIXING ROUTINES */
/* ----------------------------------------------------------------------- */
static void mix8bNoLoop(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
INC_POS
RENDER_8BIT_SMP_MONO
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
INC_POS
RENDER_8BIT_SMP
INC_POS
}
}
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix8bLoop(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
INC_POS
RENDER_8BIT_SMP_MONO
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
INC_POS
RENDER_8BIT_SMP
INC_POS
}
}
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bBidiLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int8_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS
SET_BASE8_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
INC_POS_BIDI
RENDER_8BIT_SMP_MONO
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
INC_POS_BIDI
RENDER_8BIT_SMP
INC_POS_BIDI
}
}
END_BIDI
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bNoLoopIntrp(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
INC_POS
RENDER_8BIT_SMP_INTRP
INC_POS
}
}
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix8bLoopIntrp(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
RENDER_8BIT_SMP_MONO_INTRP
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
INC_POS
RENDER_8BIT_SMP_INTRP
INC_POS
}
}
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bBidiLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int8_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS
SET_BASE8_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
INC_POS_BIDI
RENDER_8BIT_SMP_MONO_INTRP
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
INC_POS_BIDI
RENDER_8BIT_SMP_INTRP
INC_POS_BIDI
}
}
END_BIDI
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bRampNoLoop(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix8bRampLoop(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bRampBidiLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int8_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS_RAMP
SET_BASE8_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
RENDER_8BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_8BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
}
}
END_BIDI
SET_VOL_BACK
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bRampNoLoopIntrp(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix8bRampLoopIntrp(voice_t *v, uint32_t numSamples)
{
const int8_t *CDA_LinearAdr;
bool mixInMono;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE8
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix8bRampBidiLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int8_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int8_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS_RAMP
SET_BASE8_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_8BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_8BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
}
END_BIDI
SET_VOL_BACK
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
/* ----------------------------------------------------------------------- */
/* 16-BIT MIXING ROUTINES */
/* ----------------------------------------------------------------------- */
static void mix16bNoLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
INC_POS
RENDER_16BIT_SMP_MONO
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
INC_POS
RENDER_16BIT_SMP
INC_POS
}
}
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix16bLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
INC_POS
RENDER_16BIT_SMP_MONO
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
INC_POS
RENDER_16BIT_SMP
INC_POS
}
}
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bBidiLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS
SET_BASE16_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
INC_POS_BIDI
RENDER_16BIT_SMP_MONO
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
INC_POS_BIDI
RENDER_16BIT_SMP
INC_POS_BIDI
}
}
END_BIDI
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bNoLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
INC_POS
RENDER_16BIT_SMP_INTRP
INC_POS
}
}
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix16bLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol| CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
RENDER_16BIT_SMP_MONO_INTRP
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
INC_POS
RENDER_16BIT_SMP_INTRP
INC_POS
}
}
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bBidiLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
GET_VOL
if ((CDA_LVol | CDA_RVol) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS
SET_BASE16_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
CDA_BytesLeft -= samplesToMix;
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
INC_POS_BIDI
RENDER_16BIT_SMP_MONO_INTRP
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
INC_POS_BIDI
RENDER_16BIT_SMP_INTRP
INC_POS_BIDI
}
}
END_BIDI
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bRampNoLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix16bRampLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bRampBidiLoop(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS_RAMP
SET_BASE16_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
RENDER_16BIT_SMP_MONO
VOLUME_RAMPING
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_16BIT_SMP
VOLUME_RAMPING
INC_POS_BIDI
}
}
END_BIDI
SET_VOL_BACK
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bRampNoLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_NO_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
HANDLE_SAMPLE_END
}
SET_BACK_MIXER_POS
}
static void mix16bRampLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol;
register uint32_t pos, delta;
uint32_t i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_LOOP
return;
}
GET_MIXER_VARS_RAMP
GET_DELTA
SET_BASE16
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS
}
}
SET_VOL_BACK
WRAP_LOOP
}
SET_BACK_MIXER_POS
}
static void mix16bRampBidiLoopIntrp(voice_t *v, uint32_t numSamples)
{
bool mixInMono;
const int16_t *CDA_LinearAdr, *CDA_LinAdrRev;
int32_t realPos, sample, sample2, *audioMixL, *audioMixR, CDA_BytesLeft, CDA_LVolIP, CDA_RVolIP;
register const int16_t *smpPtr;
register int32_t CDA_LVol, CDA_RVol, CDA_IPValL, CDA_IPValH;
register uint32_t pos;
uint32_t delta, i, samplesToMix;
#ifndef LERPMIX
int32_t sample3;
#endif
if ((v->SLVol1 | v->SRVol1 | v->SLVol2 | v->SRVol2) == 0)
{
VOL0_OPTIMIZATION_BIDI_LOOP
return;
}
GET_MIXER_VARS_RAMP
SET_BASE16_BIDI
CDA_BytesLeft = numSamples;
while (CDA_BytesLeft > 0)
{
LIMIT_MIX_NUM
LIMIT_MIX_NUM_RAMP
CDA_BytesLeft -= samplesToMix;
GET_VOL
START_BIDI
if (mixInMono)
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_16BIT_SMP_MONO_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
}
else
{
if (samplesToMix & 1)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
samplesToMix >>= 1;
for (i = 0; i < samplesToMix; i++)
{
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
RENDER_16BIT_SMP_INTRP
VOLUME_RAMPING
INC_POS_BIDI
}
}
END_BIDI
SET_VOL_BACK
WRAP_BIDI_LOOP
}
SET_BACK_MIXER_POS
}
// -----------------------------------------------------------------------
const mixRoutine mixRoutineTable[24] =
{
(mixRoutine)mix8bNoLoop,
(mixRoutine)mix8bLoop,
(mixRoutine)mix8bBidiLoop,
(mixRoutine)mix8bNoLoopIntrp,
(mixRoutine)mix8bLoopIntrp,
(mixRoutine)mix8bBidiLoopIntrp,
(mixRoutine)mix8bRampNoLoop,
(mixRoutine)mix8bRampLoop,
(mixRoutine)mix8bRampBidiLoop,
(mixRoutine)mix8bRampNoLoopIntrp,
(mixRoutine)mix8bRampLoopIntrp,
(mixRoutine)mix8bRampBidiLoopIntrp,
(mixRoutine)mix16bNoLoop,
(mixRoutine)mix16bLoop,
(mixRoutine)mix16bBidiLoop,
(mixRoutine)mix16bNoLoopIntrp,
(mixRoutine)mix16bLoopIntrp,
(mixRoutine)mix16bBidiLoopIntrp,
(mixRoutine)mix16bRampNoLoop,
(mixRoutine)mix16bRampLoop,
(mixRoutine)mix16bRampBidiLoop,
(mixRoutine)mix16bRampNoLoopIntrp,
(mixRoutine)mix16bRampLoopIntrp,
(mixRoutine)mix16bRampBidiLoopIntrp
};