laiyp/lib_xua
1
0
Fork 0
forked from PAWPAW-Mirror/lib_xua
Code Pull Requests Activity

- Added mixer related defines to reduce use of magic numbers

Browse Source 
- Increases debug output when DEBUG flag set
- Removed some dead code
- Increased alignment of asm mixer functions
- Removed some usages of “xc_ptr” type in favour of native pointers in XC
- Added some asserts to mixer
- Added test_mixer_routing_input
- Moved test_mixer_routing_output to use shared code
This commit is contained in:
Ross Owen
2023-02-01 11:54:48 +00:00
parent 0ce91bec90
commit 73955c1a4c
13 changed files with 835 additions and 386 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib_xua/api/xua_mixer.h
View File

@@ -3,6 +3,8 @@
#ifndef _XUA_MIXER_H_
#define _XUA_MIXER_H_
#include "xua.h"
enum mix_ctl_cmd {
SET_SAMPLES_TO_HOST_MAP,
SET_SAMPLES_TO_DEVICE_MAP,
@@ -31,4 +33,14 @@ enum mix_ctl_cmd {
*/
void mixer(chanend c_to_host, chanend c_to_audio, chanend c_mix_ctl);
#define XUA_MIXER_OFFSET_OUT (0)
#define XUA_MIXER_OFFSET_IN (NUM_USB_CHAN_OUT)
#define XUA_MIXER_OFFSET_MIX (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN)
#define XUA_MIXER_OFFSET_OFF (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + MAX_MIX_COUNT)
/* Defines uses for DB to actual muliplier conversion */
#define XUA_MIXER_MULT_FRAC_BITS (25)
#define XUA_MIXER_DB_FRAC_BITS (8)
#define XUA_MIXER_MAX_MULT (1<<XUA_MIXER_MULT_FRAC_BITS) /* i.e. multiply by 0 */
#endif

4
lib_xua/module_build_info
View File

@@ -3,9 +3,9 @@ VERSION = 3.3.1
DEBUG ?= 0
ifeq ($(DEBUG),1)
DEBUG_FLAGS = -g -DXASSERT_ENABLE_ASSERTIONS_DECOUPLE=1
DEBUG_FLAGS = -g -DXASSERT_ENABLE_ASSERTIONS=1 -DXASSERT_ENABLE_DEBUG=1 -DXASSERT_ENABLE_LINE_NUMBERS=1
else
DEBUG_FLAGS = -DXASSERT_DISABLE_ASSERTIONS_DECOUPLE=1
DEBUG_FLAGS = -DXASSERT_ENABLE_ASSERTIONS=0 -DXASSERT_ENABLE_DEBUG=0 -DXASSERT_ENABLE_LINE_NUMBERS=0
endif
DEPENDENT_MODULES = lib_locks(>=2.1.0) \

23
lib_xua/src/core/endpoint0/xua_ep0_uacreqs.xc
View File

@@ -677,10 +677,6 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
{
if (c < NUM_USB_CHAN_OUT)
{
//outuint(c_mix_ctl, SET_SAMPLES_TO_DEVICE_MAP);
//outuint(c_mix_ctl, c);
//outuint(c_mix_ctl, channelMapAud[c]);
//outct(c_mix_ctl, XS1_CT_END);
UpdateMixerOutputRouting(c_mix_ctl, SET_SAMPLES_TO_DEVICE_MAP, c, channelMapAud[c]);
/* Send 0 Length as status stage */
@@ -717,10 +713,6 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
{
if (!isnull(c_mix_ctl))
{
//outuint(c_mix_ctl, SET_SAMPLES_TO_HOST_MAP);
//outuint(c_mix_ctl, c);
//outuint(c_mix_ctl, channelMapUsb[c]);
//outct(c_mix_ctl, XS1_CT_END);
UpdateMixerOutputRouting(c_mix_ctl, SET_SAMPLES_TO_HOST_MAP, c, channelMapUsb[c]);
return XUD_DoSetRequestStatus(ep0_in);
@@ -774,22 +766,15 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
/* Update all mix maps */
for (int i = 0; i < MAX_MIX_COUNT; i++)
{
//outuint(c_mix_ctl, SET_MIX_MAP);
//outuint(c_mix_ctl, i); /* Mix bus */
//outuint(c_mix_ctl, cn); /* Mixer input */
//outuint(c_mix_ctl, (int) mixSel[cn]); /* Source */
//outct(c_mix_ctl, XS1_CT_END);
/* i : Mix bus */
/* cn: Mixer input */
/* mixSel[i][cn]): Source */
UpdateMixMap(c_mix_ctl, i, cn, (int) mixSel[cn]);
}
}
else
{
/* Update relevant mix map */
//outuint(c_mix_ctl, SET_MIX_MAP); /* Command */
//outuint(c_mix_ctl, (cs-1)); /* Mix bus */
//outuint(c_mix_ctl, cn); /* Mixer input */
//outuint(c_mix_ctl, (int) mixSel[cs][cn]); /* Source */
//outct(c_mix_ctl, XS1_CT_END); /* Wait for handshake back */
UpdateMixMap(c_mix_ctl, cs-1, cn, (int) mixSel[cs][cn]);
}
@@ -838,7 +823,7 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
}
else
{
volume = db_to_mult(mixer1Weights[sp.wValue & 0xff], 8, 25);
volume = db_to_mult(mixer1Weights[sp.wValue & 0xff], XUA_MIXER_DB_FRAC_BITS, XUA_MIXER_MULT_FRAC_BITS);
}
if (!isnull(c_mix_ctl))
{

4
lib_xua/src/core/mixer/fastmix.S
View File

@@ -6,7 +6,7 @@
#define DOMIX_TOP(i) \
.cc_top doMix##i.function,doMix##i; \
.align 4 ;\
.align 16 ;\
.globl doMix##i ;\
.type doMix##i, @function ;\
.globl doMix##i##.nstackwords ;\
@@ -124,7 +124,7 @@ DOMIX_BOT(7)
#undef BODY
#define N MAX_MIX_COUNT
.cc_top setPtr.function,setPtr;
.align 4 ;
.align 16 ;
.globl setPtr;
.type setPtr, @function
.globl setPtr.nstackwords;

184
lib_xua/src/core/mixer/mixer.xc
View File

@@ -1,7 +1,9 @@
// Copyright 2011-2022 XMOS LIMITED.
// Copyright 2011-2023 XMOS LIMITED.
// This Software is subject to the terms of the XMOS Public Licence: Version 1.
#define XASSERT_UNIT MIXER
#include "xassert.h"
#include <xs1.h>
#include <print.h>
#include "xua.h"
#include "xc_ptr.h"
#include "xua_commands.h"
@@ -36,15 +38,12 @@ static unsigned abs(int x)
#endif
static int samples_array[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + MAX_MIX_COUNT + 1]; /* One larger for an "off" channel for mixer sources" */
xc_ptr samples;
unsafe
{
static int volatile * const unsafe ptr_samples = samples_array;
}
int savedsamples2[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + MAX_MIX_COUNT];
int samples_to_host_map_array[NUM_USB_CHAN_IN];
xc_ptr samples_to_host_map;
@@ -77,18 +76,6 @@ static int samples_from_host_streams[NUM_USB_CHAN_OUT]; /* Peak samples for audi
static int samples_mixer_outputs[MAX_MIX_COUNT]; /* Peak samples out of the mixer */
xc_ptr samples_mixer_outputs_ptr;
#if 0
#pragma xta command "add exclusion mixer1_rate_change"
#pragma xta command "analyse path mixer1_req mixer1_req"
#pragma xta command "set required - 10400 ns" /* 96kHz */
#endif
#if 0
#pragma xta command "add exclusion mixer2_rate_change"
#pragma xta command "analyse path mixer2_req mixer2_req"
#pragma xta command "set required - 10400 ns" /* 96kHz */
#endif
#if defined (LEVEL_METER_LEDS) || defined (LEVEL_METER_HOST)
static inline void ComputeMixerLevel(int sample, int i)
{
@@ -110,20 +97,20 @@ static inline void ComputeMixerLevel(int sample, int i)
#endif
#ifdef FAST_MIXER
void setPtr(int src, int dst, int mix);
int doMix0(xc_ptr samples, xc_ptr mult);
int doMix1(xc_ptr samples, xc_ptr mult);
int doMix2(xc_ptr samples, xc_ptr mult);
int doMix3(xc_ptr samples, xc_ptr mult);
int doMix4(xc_ptr samples, xc_ptr mult);
int doMix5(xc_ptr samples, xc_ptr mult);
int doMix6(xc_ptr samples, xc_ptr mult);
int doMix7(xc_ptr samples, xc_ptr mult);
int doMix8(xc_ptr samples, xc_ptr mult);
int doMix0(int * unsafe samples, xc_ptr mult);
int doMix1(int * unsafe samples, xc_ptr mult);
int doMix2(int * unsafe samples, xc_ptr mult);
int doMix3(int * unsafe samples, xc_ptr mult);
int doMix4(int * unsafe samples, xc_ptr mult);
int doMix5(int * unsafe samples, xc_ptr mult);
int doMix6(int * unsafe samples, xc_ptr mult);
int doMix7(int * unsafe samples, xc_ptr mult);
int doMix8(int * unsafe samples, xc_ptr mult);
#else
/* DO NOT inline, causes 10.4.2 tools to add extra loads in loop */
/* At 18 x 12dB we could get 64 x bigger */
#pragma unsafe arrays
static inline int doMix(xc_ptr samples, xc_ptr ptr, xc_ptr mult)
static inline int doMix(xc_ptr samples, xc_ptr mixMapSlice, xc_ptr mixMultSlice)
{
int h=0;
int l=0;
@@ -132,18 +119,17 @@ static inline int doMix(xc_ptr samples, xc_ptr ptr, xc_ptr mult)
#pragma loop unroll
for (int i=0; i<MIX_INPUTS; i++)
{
int sample;
int index;
int m;
read_via_xc_ptr_indexed(index, ptr, i);
read_via_xc_ptr_indexed(sample,samples,index);
read_via_xc_ptr_indexed(m, mult, i);
{h,l} = macs(sample, m, h, l);
int sample;
int source;
int weight;
read_via_xc_ptr_indexed(source, mixMapSlice, i);
read_via_xc_ptr_indexed(sample, samples, source);
read_via_xc_ptr_indexed(weight, mixMultSlice, i);
{h,l} = macs(sample, weight, h, l);
}
#if 1
/* Perform saturation */
l = sext(h, 25);
l = sext(h, XUA_MIXER_MULT_FRAC_BITS);
if(l != h)
{
@@ -152,7 +138,6 @@ static inline int doMix(xc_ptr samples, xc_ptr ptr, xc_ptr mult)
else
h = (0x7fffff00>>7);
}
#endif
return h<<7;
}
#endif
@@ -179,7 +164,6 @@ static inline void GiveSamplesToHost(chanend c, xc_ptr ptr, xc_ptr multIn)
#endif
unsafe
{
//read_via_xc_ptr_indexed(sample,samples,index);
sample = ptr_samples[index];
}
@@ -269,7 +253,12 @@ static inline void GiveSamplesToDevice(chanend c, xc_ptr ptr, xc_ptr multOut)
read_via_xc_ptr_indexed(index, ptr, i);
/* Read the actual sample value */
read_via_xc_ptr_indexed(sample, samples, index);
//read_via_xc_ptr_indexed(sample, samples, index);
unsafe
{
/* Read the actual sample value */
sample = ptr_samples[index];
}
#else
unsafe
{
@@ -284,7 +273,6 @@ static inline void GiveSamplesToDevice(chanend c, xc_ptr ptr, xc_ptr multOut)
read_via_xc_ptr_indexed(mult, multOut, i);
{h, l} = macs(mult, sample, 0, 0);
h<<=3; // Shift used to be done in audio thread but now done here incase of 32bit support
#error
#if (STREAM_FORMAT_OUTPUT_RESOLUTION_32BIT_USED == 1)
h |= (l >>29)& 0x7; // Note: This step is not required if we assume sample depth is 24bit (rather than 32bit)
// Note: We need all 32bits for Native DSD
@@ -307,7 +295,7 @@ static inline void GetSamplesFromDevice(chanend c)
#endif
#pragma loop unroll
for (int i=0;i<NUM_USB_CHAN_IN;i++)
for (int i=0; i<NUM_USB_CHAN_IN; i++)
{
int sample;
int x;
@@ -334,12 +322,13 @@ static inline void GetSamplesFromDevice(chanend c)
/* Do the multiply */
{h, l} = macs(mult, sample, 0, 0);
h <<=3;
write_via_xc_ptr_indexed(samples_array, NUM_USB_CHAN_OUT+i, h);
write_via_xc_ptr_indexed(samples_array, XUA_MIXER_OFFSET_IN+i, h);
#else
/* No volume processing */
unsafe
{
ptr_samples[NUM_USB_CHAN_OUT + i] = sample;
assert((XUA_MIXER_OFFSET_IN + i) < (NUM_USB_CHAN_IN + NUM_USB_CHAN_OUT));
ptr_samples[XUA_MIXER_OFFSET_IN + i] = sample;
}
#endif
}
@@ -394,12 +383,19 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
break;
case SET_MIX_MULT:
mix = inuint(c_mix_ctl);
index = inuint(c_mix_ctl);
val = inuint(c_mix_ctl);
inct(c_mix_ctl);
write_word_to_mix_mult(mix, index, val);
if((index < MIX_INPUTS) && (mix < MAX_MIX_COUNT))
{
write_word_to_mix_mult(mix, index, val);
}
assert((index < MIX_INPUTS) && (mix < MAX_MIX_COUNT) && msg("Mix mult index out of range"));
break;
case SET_MIX_MAP:
@@ -520,9 +516,8 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
#pragma loop unroll
/* Reset the mix values back to 0 */
for (int i=0;i<MAX_MIX_COUNT;i++)
for (int i=0; i<MAX_MIX_COUNT; i++)
{
//write_via_xc_ptr_indexed(samples, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + i), 0);
unsafe
{
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + i] = 0;
@@ -544,13 +539,15 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
inuint(c_mixer2);
/* Do the mixing */
unsafe
{
#ifdef FAST_MIXER
mixed = doMix0(samples, mix_mult_slice(0));
mixed = doMix0(ptr_samples, mix_mult_slice(0));
#else
mixed = doMix(samples, mix_map_slice(0),mix_mult_slice(0));
mixed = doMix(ptr_samples, mix_map_slice(0), mix_mult_slice(0));
#endif
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 0), mixed);
ptr_samples[XUA_MIXER_OFFSET_MIX + 0] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 0);
#endif
@@ -559,14 +556,16 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
if (!mixer1_mix2_flag)
#endif
{
#if MAX_MIX_COUNT > 2
unsafe
{
#ifdef FAST_MIXER
mixed = doMix2(samples, mix_mult_slice(2));
mixed = doMix2(ptr_samples, mix_mult_slice(2));
#else
mixed = doMix(samples, mix_map_slice(2),mix_mult_slice(2));
mixed = doMix(ptr_samples, mix_map_slice(2), mix_mult_slice(2));
#endif
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 2), mixed);
ptr_samples[XUA_MIXER_OFFSET_MIX + 2] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 2);
@@ -574,26 +573,30 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
#endif
#if MAX_MIX_COUNT > 4
unsafe
{
#ifdef FAST_MIXER
mixed = doMix4(samples, mix_mult_slice(4));
mixed = doMix4(ptr_samples, mix_mult_slice(4));
#else
mixed = doMix(samples, mix_map_slice(4),mix_mult_slice(4));
mixed = doMix(samples, mix_map_slice(4), mix_mult_slice(4));
#endif
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 4), mixed);
ptr_samples[XUA_MIXER_OFFSET_MIX + 4] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 4);
#endif
#endif
#if MAX_MIX_COUNT > 6
unsafe
{
#ifdef FAST_MIXER
mixed = doMix6(samples, mix_mult_slice(6));
mixed = doMix6(ptr_samples, mix_mult_slice(6));
#else
mixed = doMix(samples, mix_map_slice(6),mix_mult_slice(6));
mixed = doMix(samples, mix_map_slice(6), mix_mult_slice(6));
#endif
write_via_xc_ptr_indexed(samples, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 6), mixed);
ptr_samples[XUA_MIXER_OFFSET_MIX + 6] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 6);
#endif
@@ -661,7 +664,10 @@ static void mixer2(chanend c_mixer1, chanend c_audio)
for (int i=0;i<MAX_MIX_COUNT;i++)
{
write_via_xc_ptr_indexed(samples, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + i), 0);
unsafe
{
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + i] = 0;
}
}
/* Wait for handshake and pass on */
@@ -679,60 +685,65 @@ static void mixer2(chanend c_mixer1, chanend c_audio)
/* Do the mixing */
#if MAX_MIX_COUNT > 1
unsafe
{
#ifdef FAST_MIXER
mixed = doMix1(samples, mix_mult_slice(1));
mixed = doMix1(ptr_samples, mix_mult_slice(1));
#else
mixed = doMix(samples, mix_map_slice(1),mix_mult_slice(1));
mixed = doMix(samples, mix_map_slice(1), mix_mult_slice(1));
#endif
write_via_xc_ptr_indexed(samples, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 1), mixed);
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 1] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 1);
#endif
#endif
#if (MAX_FREQ > 96000)
/* Fewer mixes when running higher than 96kHz */
if (!mixer2_mix2_flag)
#endif
{
#if MAX_MIX_COUNT > 3
unsafe
{
#ifdef FAST_MIXER
mixed = doMix3(samples, mix_mult_slice(3));
mixed = doMix3(ptr_samples, mix_mult_slice(3));
#else
mixed = doMix(samples, mix_map_slice(3),mix_mult_slice(3));
mixed = doMix(samples, mix_map_slice(3), mix_mult_slice(3));
#endif
write_via_xc_ptr_indexed(samples, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 3), mixed);
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 3] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 3);
#endif
#endif
#if MAX_MIX_COUNT > 5
unsafe
{
#ifdef FAST_MIXER
mixed = doMix5(samples, mix_mult_slice(5));
mixed = doMix5(ptr_samples, mix_mult_slice(5));
#else
mixed = doMix(samples, mix_map_slice(5),mix_mult_slice(5));
mixed = doMix(samples, mix_map_slice(5), mix_mult_slice(5));
#endif
write_via_xc_ptr_indexed(samples, NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 5, mixed);
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 5] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 5);
#endif
#endif
#if MAX_MIX_COUNT > 7
unsafe
{
#ifdef FAST_MIXER
mixed = doMix7(samples, mix_mult_slice(7));
mixed = doMix7(ptr_samples, mix_mult_slice(7));
#else
mixed = doMix(samples, mix_map_slice(7),mix_mult_slice(7));
mixed = doMix(samples, mix_map_slice(7), mix_mult_slice(7));
#endif
write_via_xc_ptr_indexed(samples, NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 7, mixed);
ptr_samples[NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 7] = mixed;
}
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 7);
#endif
@@ -751,7 +762,7 @@ void mixer(chanend c_mix_in, chanend c_mix_out, chanend c_mix_ctl)
multOut = array_to_xc_ptr((multOut_array,unsigned[]));
multIn = array_to_xc_ptr((multIn_array,unsigned[]));
samples = array_to_xc_ptr((samples_array,unsigned[]));
//samples = array_to_xc_ptr((samples_array,unsigned[]));
samples_to_host_map = array_to_xc_ptr((samples_to_host_map_array,unsigned[]));
samples_to_device_map = array_to_xc_ptr((samples_to_device_map_array,unsigned[]));
@@ -770,7 +781,6 @@ void mixer(chanend c_mix_in, chanend c_mix_out, chanend c_mix_ctl)
for (int i=0;i<NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + MAX_MIX_COUNT;i++)
unsafe {
//write_via_xc_ptr_indexed(samples,i,0);
ptr_samples[i] = 0;
}
@@ -779,7 +789,7 @@ void mixer(chanend c_mix_in, chanend c_mix_out, chanend c_mix_ctl)
for (int i=0;i<NUM_USB_CHAN_OUT;i++)
{
//samples_to_device_map_array[i] = i;
asm("stw %0, %1[%2]":: "r"(i), "r"(samples_to_device_map), "r"(i));
asm("stw %0, %1[%2]":: "r"(i), "r"(samples_to_device_map), "r"(XUA_MIXER_OFFSET_OUT+i));
}
}
@@ -799,7 +809,7 @@ void mixer(chanend c_mix_in, chanend c_mix_out, chanend c_mix_ctl)
for (int i=0;i<NUM_USB_CHAN_IN;i++)
{
write_via_xc_ptr_indexed(samples_to_host_map, i, NUM_USB_CHAN_OUT + i);
write_via_xc_ptr_indexed(samples_to_host_map, i, XUA_MIXER_OFFSET_IN + i);
}
#if MAX_MIX_COUNT> 0
@@ -809,7 +819,7 @@ void mixer(chanend c_mix_in, chanend c_mix_out, chanend c_mix_ctl)
#ifndef FAST_MIXER
write_word_to_mix_map(i,j, j < 16 ? j : j + 2);
#endif
write_word_to_mix_mult(i,j, i==j ? db_to_mult(0, 8, 25) : 0);
write_word_to_mix_mult(i,j, i==j ? db_to_mult(0, XUA_MIXER_DB_FRAC_BITS, XUA_MIXER_MULT_FRAC_BITS) : 0);
}
#endif