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fm64.cpp
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fm64.cpp
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/*
* File: fm64.cpp
*
* DX7/DX21/DX11-series compatible FM oscillator
*
* 2020-2021 (c) Oleg Burdaev
* mailto: dukesrg@gmail.com
*
*/
#include "userosc.h"
#include "fixed_mathq.h"
#include "arm.h"
//#define OP6 //6-operator support
//#define OP4 //4-operator support
//#define WF32 //all 8 DX11 waveforms from PCM32 wavebank
//#define WF16 //all 8 DX11 waveforms from PCM16 wavebank
//#define WF8 //all 8 DX11 waveforms runtime generated from half-sine
//#define WF4 //4 first DX11 waveforms runtime generated from half-sine
//#define WF2 //2 first DX11 waveforms runtime generated from half-sine
//#define WFROM //logue SDK wave banks A-F
//#define WFGEN //generated waveforms
//#define OPSIX //enable KORG Opsix extensions
//#define SY77 //enable SY77 extensions
#define TWEAK_ALG //use reserved bits for extended algorithms count support
#define TWEAK_WF //use reserved bits for extended waveforms count support
//#define SHAPE_LFO //map Shape LFO to parameters (~28-40 bytes)
//#define PEG //pitch EG enable (~530-600 bytes)
//#define PEG_RATE_LUT //PEG Rate from LUT close to DX7, instead of approximated function (~44-176 bytes)
#define FINE_TUNE //16-bit precision for cents/detune
//#define KIT_MODE //key tracking to voice (- ~112 bytes)
#define SPLIT_ZONES 3
//#define MOD16 //16-bit mod matrix processing
//#define ROLLOUT //Inner loop rollout
#ifdef MOD16
#define FEEDBACK_COUNT 2 //second feedback is mandatory and 'free' for 16-bit mod matrix
#endif
#ifndef FEEDBACK_COUNT
#define FEEDBACK_COUNT 1
#endif
#define FAST_POWF //native logue-sdk pow2f must be fixed, lost precesion (- ~6K bytes)
//#define FASTER_POWF //not very precise (- ~6.3K bytes)
#if defined(FAST_POWF)
#define POWF(a,b) fastpowf(a,b)
#define POW2F(a) fastpow2f(a)
#elif defined(FASTER_POWF)
#define POWF(a,b) fasterpowf(a,b)
#define POW2F(a) fasterpow2f(a)
#else
#define POWF(a,b) powf(a,b)
#define POW2F(a) powf(2.f,a)
#endif
#include "fm64.h"
#include "custom_param.h"
CUSTOM_PARAM_INIT(
#ifdef KIT_MODE
CUSTOM_PARAM_ID(7),
CUSTOM_PARAM_ID(10),
CUSTOM_PARAM_ID(5),
CUSTOM_PARAM_ID(11),
CUSTOM_PARAM_ID(6),
CUSTOM_PARAM_ID(12),
#else
CUSTOM_PARAM_ID(2),
CUSTOM_PARAM_ID(122),
CUSTOM_PARAM_ID(77),
CUSTOM_PARAM_ID(24),
CUSTOM_PARAM_ID(22),
#ifdef WFBITS
#ifdef WFGEN
CUSTOM_PARAM_ID(136),
#else
CUSTOM_PARAM_ID(131),
#endif
#else
CUSTOM_PARAM_ID(25),
#endif
#endif
CUSTOM_PARAM_ID(1),
CUSTOM_PARAM_ID(17)
);
#if defined(WFGEN)
#define FORMAT_PCM16
#define SAMPLE_COUNT 256
#define SAMPLE_GUARD
#define WAVEBANK_NO_HOOKS
#define WAVE_COUNT OPERATOR_COUNT
#define WAVE_COUNT_X OPERATOR_COUNT
#define WAVE_COUNT_Y 1
#include "wavebank.h"
#define WFBITS 7
#elif defined(WFROM)
#define WAVE_COUNT k_waves_all_cnt
#define WFBITS 7
#elif defined(WF16x2)
#include "waveforms16x2.h"
#define WFBITS 4
#elif defined(WF32)
#include "waveforms32.h"
#define WFBITS 3
#elif defined(WF16)
#include "waveforms16.h"
#define WFBITS 3
#elif defined(WF8)
#define OSC_SIN_Q15_LUT
#include "waveforms.h"
#define WAVE_COUNT 8
#define WFBITS 3
#elif defined(WF4)
#define OSC_SIN_Q15_LUT
#include "waveforms.h"
#define WAVE_COUNT 4
#define WFBITS 2
#elif defined(WF2)
#define OSC_SIN_Q15_LUT
#include "waveforms.h"
#define WAVE_COUNT 2
#define WFBITS 1
#endif
#ifdef WFGEN
#define WAVEFORM_COUNT 126
#else
#define WAVEFORM_COUNT WAVE_COUNT
#endif
#ifdef WAVE_PINCH
#define WAVE_PINCH_PARAMS , s_wavewidth[i * 2], s_wavewidth[i * 2 + 1]
#else
#define WAVE_PINCH_PARAMS
#endif
#ifdef WFBITS
#if defined(WFROM)
#define OSC_FUNC(a) osc_wave_scanf(s_waveform[i], a)
#elif defined(WFGEN)
#define OSC_FUNC(a) osc_wavebank(a, i WAVE_PINCH_PARAMS)
#else
#define OSC_FUNC(a) osc_wavebank(a, s_waveform[i] WAVE_PINCH_PARAMS)
#endif
#else
#define OSC_FUNC(a) osc_sinq(a WAVE_PINCH_PARAMS)
#if defined(WFSIN32)
#define OSC_SIN_Q31_LUT //use pre-calculated Q31 LUT instead of converted from firmware float, saves ~96 bytes of code
#elif defined(WFSIN16)
#define OSC_SIN_Q15_LUT //use pre-calculated Q31 LUT instead of converted from firmware float, saves ~96 bytes of code
#endif
#define OSC_SIN_Q
#endif
#include "osc_apiq.h"
// #define EGLUT //use precalculated EG LUT, saves ~140 bytes of code
#define USE_Q31
#if defined(EGLUT)
#include "eglut.h"
#define EG_LUT_SHR 20
#elif defined(EGLUT11)
#include "eglut11.h"
#define EG_LUT_SHR 19
#elif defined(EGLUT12)
#include "eglut12.h"
#define EG_LUT_SHR 18
#elif defined(EGLUT13)
#include "eglut13.h"
#define EG_LUT_SHR 17
#endif
#if defined(EGLUTX15)
#define param_eglut(a,b) (ldrsh_lsl((int32_t)eg_lut, usat_asr(31, q31add(a,b), (EG_LUT_SHR + 1)), 1) << 16)
#elif defined(EGLUTX16)
#define param_eglut(a,b) (ldrh_lsl((int32_t)eg_lut, usat_asr(31, q31add(a,b), (EG_LUT_SHR + 1)), 1) << 15)
#else
#define param_eglut(a,b) (ldr_lsl((int32_t)eg_lut, usat_asr(31, q31add(a,b), (EG_LUT_SHR + 1)), 2))
#endif
#ifdef USE_Q31_PITCH
typedef q31_t pitch_t;
#define f32_to_pitch(a) f32_to_q31(a)
#define pitch_to_phase(a) (a)
#define pitch_mul(a,b) q31mul(a,b)
#else
typedef float_t pitch_t;
#define f32_to_pitch(a) (a)
#define pitch_to_phase(a) f32_to_q31(a)
#define pitch_mul(a,b) ((a)*(b))
#endif
#define FEEDBACK_RECIP 0x00FFFFFF // <1/128 - pre-multiplied by 2 for simplified Q31 multiply by always positive
#define FEEDBACK_RECIPF .00390625f // 1/256 - pre-multiplied by 2 for simplified Q31 multiply by always positive
#define LEVEL_SCALE_FACTOR 0x01000000 // -0.7525749892dB/96dB === 1/128
//#define DX7_SAMPLING_FREQ 49096.545017211284821233588006932f // 1/20.368032usec
//#define DX7_TO_LOGUE_FREQ 0.977665536f // 48000/49096.545
//-.0325870980969347836053763275142f // log2(DX7_TO_LOGUE_FREQ)
#define EG_FREQ_CORRECT .0325870980969347836053763275142f // log2(1/DX7_TO_LOGUE_FREQ)
#define DX7_RATE_EXP_FACTOR .16f // ? 16/99 = .16(16)
#define DX11_RATE_EXP_FACTOR .505f
#define DX11_RELEASE_RATE_EXP_FACTOR 1.04f
//#define DX7_ATTACK_RATE_FACTOR 5.0200803e-7f // 1/(41.5*48000)
//#define DX7_DECAY_RATE_FACTOR -5.5778670e-8f // -1/(9*41.5*48000)
//#define DX7_ATTACK_RATE1_FACTOR 5.0261359e-7f // 1/(41.45*48000)
//#define DX7_DECAY_RATE1_FACTOR -8.3768932e-8f // -1/(6*41.45*48000)
#define DX7_ATTACK_RATE_FACTOR 3.3507573e-7f // 1/(1.5*41.45*48000)
#define DX7_DECAY_RATE_FACTOR -5.5845955e-8f // -1/(1.5*6*41.45*48000)
#define DX7_RATE1_FACTOR 1.5f
//#define DX7_ATTACK_RATE_FACTOR 4.8773035424164220513138759143079e-7f // 1/(2^21 * DX7_TO_LOGUE_FREQ) = 1/(2^(21 - EG_FREQ_CORRECT)
//#define DX7_ATTACK_RATE_FACTOR 20.9674129f
//#define DX7_ATTACK_RATE_FACTOR (21.f - EG_FREQ_CORRECT)
// 2^24 samples @49k = 2^24 / 49k seconds = 2^24 * 48k / (48k * 49k) seconds = 2^24 * 48K / 49K samples @ 48K
//#define DX7_DECAY_RATE_FACTOR -6.0966294280205275641423448928849e-8f // -1/(2^24 * DX7_TO_LOGUE_FREQ)
//#define DX7_DECAY_RATE_FACTOR 23.9674129f
//#define DX7_DECAY_RATE_FACTOR (24.f - EG_FREQ_CORRECT)
//#define DX7_HOLD_RATE_FACTOR .51142234392928421688784987507221f // 1/(2^1 * DX7_TO_LOGUE_FREQ)
//#define DX7_HOLD_RATE_FACTOR 0.9674129f
//#define DX7_HOLD_RATE_FACTOR (1.f - EG_FREQ_CORRECT)
//#define RATE_SCALING_FACTOR .061421131f
//#define RATE_SCALING_FACTOR .041666667f
//#define RATE_SCALING_FACTOR .065040650f // 1/24 * 64/41
#define RATE_SCALING_FACTOR .445291664f // reversed from measures for current curve function
#define DX7_RATE_SCALING_FACTOR .142857143f // 1/7
#define DX11_RATE_SCALING_FACTOR .333333333f // 1/3
//#define DX7_LEVEL_SCALE_FACTOR 0.0267740885f // 109.(6)/4096
//#define DX7_LEVEL_SCALE_FACTOR 0.0222222222f // 1/45
#define DX7_LEVEL_SCALE_FACTOR 0.0200686664f
#define DX11_LEVEL_SCALE_FACTOR 0.0149253731f // 1/(103-36) C1...G6
//#define LEVEL_SCALE_FACTORF 0.0078740157f // 1/127
#define LEVEL_SCALE_FACTORF 0.0078125f // 1/128
#define LEVEL_SCALE_FACTOR_DB 0.0103810253f // 1/96dB
#define DX11_TO_DX7_LEVEL_SCALE_FACTOR 6.6f //99/15
#define DX11_MAX_LEVEL 15
//#define FREQ_FACTOR .08860606f // (9.772 - 1)/99
#define PEG_SCALE 0x00600000 // 48/128 * 256 * 65536
#define PEG_RATE_SCALE 196.38618f; // ~ 192 >> 24 semitones per sample at 49096.545
#ifdef MOD16
#ifdef CUSTOM_ALGORITHM_COUNT
#define CUSTOM_MI_SCALE_FACTOR 0x139CA3E //normalized for 0-100 range of opsix
//#define CUSTOM_OUT_SCALE_FACTOR 0x147AE14 //^
#endif
#define MI_SCALE_FACTOR 0x7A93
static const uint8_t *s_algorithm;
static q15_t s_opval[OPERATOR_COUNT + FEEDBACK_COUNT * 2];
static q15_t s_modmatrix[OPERATOR_COUNT][OPERATOR_COUNT + FEEDBACK_COUNT];
static q15_t s_comp[OPERATOR_COUNT];
static q15_t compensation[] = {
0x7FFF,
0x3FFF,
0x2AAA,
0x1FFF,
0x1999,
0x1555
};
#else
#define MI_SCALE_FACTOR 0x7A92BE8B // 3.830413123f >> 2
static uint8_t s_algorithm[OPERATOR_COUNT] = {0};
static q31_t s_opval[OPERATOR_COUNT + FEEDBACK_COUNT * 2];
static q31_t s_comp[OPERATOR_COUNT];
static q31_t compensation[] = {
0x7FFFFFFF,
0x3FFFFFFF,
0x2AAAAAAA,
0x1FFFFFFF,
0x19999999,
0x15555555
};
#endif
static uint8_t s_algorithm_idx;
static int8_t s_algorithm_offset = 0;
static uint8_t s_algorithm_select = 0;
#define FINE_TUNE_FACTOR 65536.f
static uint8_t s_split_point[SPLIT_ZONES - 1] = {0};
static int8_t s_zone_transpose[SPLIT_ZONES] = {0};
static int8_t s_zone_voice_shift[SPLIT_ZONES] = {0};
static int8_t s_zone_transposed = 0;
#ifndef KIT_MODE
static uint8_t s_kit_voice = 0;
static int8_t s_voice[SPLIT_ZONES] = {0};
#endif
static int8_t s_level_offset[OPERATOR_COUNT + 3] = {0};
static int8_t s_kls_offset[OPERATOR_COUNT + 3] = {0};
static int8_t s_kvs_offset[OPERATOR_COUNT + 3] = {0};
static int8_t s_egrate_offset[OPERATOR_COUNT + 3] = {0};
static int8_t s_krs_offset[OPERATOR_COUNT + 3] = {0};
static int8_t s_detune_offset[OPERATOR_COUNT + 3] = {0};
#ifdef WAVE_PINCH
static int8_t s_waveform_pinch[OPERATOR_COUNT + 3] = {0};
#endif
#ifdef OP6
static uint8_t s_level_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
static uint8_t s_kls_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
static uint8_t s_kvs_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
static uint8_t s_egrate_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
static uint8_t s_krs_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
static uint8_t s_detune_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100, 100, 100};
#else
static uint8_t s_level_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
static uint8_t s_kls_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
static uint8_t s_kvs_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
static uint8_t s_egrate_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
static uint8_t s_krs_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
static uint8_t s_detune_scale[OPERATOR_COUNT + 3] = {100, 100, 100, 100, 100, 100, 100};
#endif
static float s_feedback_offset[FEEDBACK_COUNT] = {0.f};
#if FEEDBACK_COUNT == 2
static float s_feedback_scale[FEEDBACK_COUNT] = {1.f, 1.f};
#else
static float s_feedback_scale[FEEDBACK_COUNT] = {1.f};
#endif
static uint8_t s_feedback_route[FEEDBACK_COUNT] = {0};
static uint8_t s_feedback_level[FEEDBACK_COUNT] = {0};
#ifdef WFBITS
#ifdef OP6
static int8_t s_waveform_offset[OPERATOR_COUNT + 3 + 4] = {0};
#else
static int8_t s_waveform_offset[OPERATOR_COUNT + 3 + 3] = {0};
#endif
#endif
static int8_t s_left_depth[OPERATOR_COUNT];
static int8_t s_right_depth[OPERATOR_COUNT];
static uint8_t s_pitchfreq[OPERATOR_COUNT];
static uint8_t s_egstage[OPERATOR_COUNT];
static uint8_t s_kvs[OPERATOR_COUNT];
static uint8_t s_break_point[OPERATOR_COUNT];
static uint8_t s_left_curve[OPERATOR_COUNT];
static uint8_t s_right_curve[OPERATOR_COUNT];
static uint8_t s_opi;
static int8_t s_detune[OPERATOR_COUNT];
static int8_t s_transpose;
static uint32_t s_sample_num;
static uint32_t s_sample_count[OPERATOR_COUNT][EG_STAGE_COUNT * 2];
static q31_t s_velocity = 0;
static int8_t s_op_level[OPERATOR_COUNT];
static float s_op_rate_scale[OPERATOR_COUNT];
#ifdef WFBITS
static uint8_t s_op_waveform[OPERATOR_COUNT];
#ifdef WFROM
static const float * s_waveform[OPERATOR_COUNT];
#else
static uint32_t s_waveform[OPERATOR_COUNT];
#ifdef WFGEN
#ifdef OP6
static uint32_t s_waveform_current[OPERATOR_COUNT] = {0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF};
#else
static uint32_t s_waveform_current[OPERATOR_COUNT] = {0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF};
#endif
#endif
#endif
#endif
static uint8_t s_egrate[OPERATOR_COUNT][EG_STAGE_COUNT];
static q31_t s_egsrate[OPERATOR_COUNT][EG_STAGE_COUNT * 2];
static float s_egsrate_recip[OPERATOR_COUNT][2];
static q31_t s_eglevel[OPERATOR_COUNT][EG_STAGE_COUNT];
static q31_t s_egval[OPERATOR_COUNT];
static q31_t s_oplevel[OPERATOR_COUNT];
static q31_t s_outlevel[OPERATOR_COUNT];
#ifdef OP6
static float s_klslevel[OPERATOR_COUNT] = {LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB};
static float s_krslevel[OPERATOR_COUNT] = {RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR};
static float s_egratelevel[OPERATOR_COUNT] = {1.f, 1.f, 1.f, 1.f, 1.f, 1.f};
#ifdef WAVE_PINCH
static q31_t s_wavewidth[OPERATOR_COUNT * 2] = {0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000};
#endif
#else
static float s_klslevel[OPERATOR_COUNT] = {LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB, LEVEL_SCALE_FACTOR_DB};
static float s_krslevel[OPERATOR_COUNT] = {RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR, RATE_SCALING_FACTOR};
static float s_egratelevel[OPERATOR_COUNT] = {1.f, 1.f, 1.f, 1.f};
#ifdef WAVE_PINCH
static q31_t s_wavewidth[OPERATOR_COUNT * 2] = {0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000, 0x7FFFFFFF, 0x01000000};
#endif
#endif
static int16_t s_klsoffset[OPERATOR_COUNT] = {0};
static int16_t s_egrateoffset[OPERATOR_COUNT] = {0};
static float s_krsoffset[OPERATOR_COUNT] = {0.f};
static q31_t s_level_scaling[OPERATOR_COUNT];
static q31_t s_kvslevel[OPERATOR_COUNT];
static q31_t s_velocitylevel[OPERATOR_COUNT];
static float s_attack_rate_exp_factor;
static float s_release_rate_exp_factor;
static float s_level_scale_factor;
static q31_t s_feedback[FEEDBACK_COUNT];
static uint8_t s_feedback_src[FEEDBACK_COUNT];
static uint8_t s_feedback_src_alg[FEEDBACK_COUNT];
static uint8_t s_feedback_dst_alg[FEEDBACK_COUNT];
#ifdef PEG
static int32_t s_pegrate[PEG_STAGE_COUNT + 1];
static int32_t s_peglevel[PEG_STAGE_COUNT];
static uint32_t s_peg_sample_count[PEG_STAGE_COUNT];
static int32_t s_pegval;
static float s_pegrate_releaserecip;
static uint8_t s_pegstage;
static uint8_t s_peg_stage_start;
#endif
static pitch_t s_oppitch[OPERATOR_COUNT];
static q31_t s_phase[OPERATOR_COUNT];
enum {
state_running = 0,
state_noteon = 1,
state_noteoff = 2,
state_wave_changed = 4
};
#ifdef WFGEN
static uint32_t s_state = state_wave_changed;
#else
static uint32_t s_state = 0;
#endif
float paramScale(uint8_t *param, uint32_t opidx) {
return .000001f * param[opidx] * param[((s_algorithm[opidx] & ALG_OUT_MASK) >> 7) + OPERATOR_COUNT] * param[OPERATOR_COUNT + 2];
}
int32_t paramOffset(int8_t *param, uint32_t opidx) {
return param[opidx] + param[((s_algorithm[opidx] & ALG_OUT_MASK) >> 7) + OPERATOR_COUNT] + param[OPERATOR_COUNT + 2];
}
static inline __attribute__((optimize("Ofast"), always_inline))
void setOpLevel(uint32_t opidx) {
// make it non-negative and apply -96dB to further fit EG level
s_oplevel[opidx] = q31sub((usat_lsl(31, q31add(s_level_scaling[opidx], s_velocitylevel[opidx]), 0)), 0x7F000000);
}
void setOutLevel() {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++)
// saturate Out Level to 0dB offset of Q31
s_outlevel[i] = q31add(f32_to_q31(scale_level(clipminmaxi32(0, s_op_level[i] + paramOffset(s_level_offset, i), 99)) * paramScale(s_level_scale, i) * LEVEL_SCALE_FACTORF), 0x00FFFFFF);
}
void setKvsLevel() {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++)
s_kvslevel[i] = f32_to_q31(clipminmaxf(0.f, s_kvs[i] + paramOffset(s_kvs_offset, i) * 0.07f, 7.f) * paramScale(s_kvs_scale, i) * .015625f);
}
static inline __attribute__((optimize("Ofast"), always_inline))
void setVelocityLevel() {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
// Velocity * KVS
s_velocitylevel[i] = smmul(s_velocity, s_kvslevel[i]) << 7;
setOpLevel(i);
}
}
/*
void setLevel() {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
// saturate Out Level to 0dB offset of Q31
s_oplevel[i] = q31add(f32_to_q31(scale_level(clipminmaxi32(0, s_op_level[i] + paramOffset(s_level_offset, i), 99)) * paramScale(s_level_scale, i) * LEVEL_SCALE_FACTORF), 0x00FFFFFF);
// saturate with KLS
s_oplevel[i] = q31add(s_oplevel[i], s_level_scaling[i]);
// adjust 0dB level to fit positive Velocity * KVS and add them
s_oplevel[i] = q31add(q31sub(s_oplevel[i], 0x07000000), f32_to_q31(s_velocity * clipminmaxf(0.f, s_kvs[i] + paramOffset(s_kvs_offset, i) * 0.07f, 7.f) * paramScale(s_kvs_scale, i)));
// make it non-negative and apply -96dB to further fit EG level
s_oplevel[i] = q31sub((usat_lsl(31, s_oplevel[i], 0)), 0x7F000000);
}
}
*/
#ifdef WFBITS
void setWaveform() {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
#ifdef WFROM
s_waveform[i] = wavesAll[clipminmaxi32(
0, s_op_waveform[i] +
paramOffset(s_waveform_offset, i) +
(i & 0x01 ? (s_waveform_offset[OPERATOR_COUNT + 3 + (i >> 1)] / 10) : (s_waveform_offset[OPERATOR_COUNT + 3 + (i >> 1)] % 10)) +
((s_algorithm[i] & ALG_OUT_MASK) ? (s_waveform_offset[sizeof(s_waveform_offset) / sizeof(*s_waveform_offset) - 1] / 10) : (s_waveform_offset[sizeof(s_waveform_offset) / sizeof(*s_waveform_offset) - 1] % 10)),
WAVEFORM_COUNT - 1
)];
#else
s_waveform[i] = clipminmaxi32(
0, s_op_waveform[i] +
paramOffset(s_waveform_offset, i) +
(i & 0x01 ? (s_waveform_offset[OPERATOR_COUNT + 3 + (i >> 1)] / 10) : (s_waveform_offset[OPERATOR_COUNT + 3 + (i >> 1)] % 10)) +
((s_algorithm[i] & ALG_OUT_MASK) ? (s_waveform_offset[sizeof(s_waveform_offset) / sizeof(*s_waveform_offset) - 1] / 10) : (s_waveform_offset[sizeof(s_waveform_offset) / sizeof(*s_waveform_offset) - 1] % 10)),
WAVEFORM_COUNT - 1
);
#ifdef WFGEN
if (s_waveform[i] != s_waveform_current[i])
s_state |= state_wave_changed;
#endif
#endif
}
}
#endif
void setFeedback(uint32_t idx) {
float value = clipmaxf(s_feedback_level[idx] + s_feedback_offset[idx], 7.f);
s_feedback[idx] = value <= 0.f ? 0 : f32_to_q31(POW2F(value * s_feedback_scale[idx]) * FEEDBACK_RECIPF);
}
void setFeedbackRoute(uint32_t idx) {
uint32_t dst;
if (s_feedback_route[idx] == 0) {
s_feedback_src[idx] = s_feedback_src_alg[idx];
dst = s_feedback_dst_alg[idx];
} else {
s_feedback_src[idx] = OPERATOR_COUNT - clipminmaxi32(1, s_feedback_route[idx] / 10, OPERATOR_COUNT);
dst = OPERATOR_COUNT - clipminmaxi32(1, s_feedback_route[idx] % 10, OPERATOR_COUNT);
}
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
#ifdef MOD16
if (i == dst)
s_modmatrix[i][OPERATOR_COUNT + idx] = MI_SCALE_FACTOR;
else
s_modmatrix[i][OPERATOR_COUNT + idx] = 0;
#else
if (i == dst)
s_algorithm[i] |= ALG_FBK_MASK << idx;
else
s_algorithm[i] &= ~(ALG_FBK_MASK << idx);
#endif
}
}
void setAlgorithm() {
int32_t comp = 0;
#ifdef MOD16
#ifdef CUSTOM_ALGORITHM_COUNT
uint32_t algidx = (s_algorithm_select == 0 ? s_algorithm_idx : s_algorithm_select - 1) + s_algorithm_offset;
if (algidx < ALGORITHM_COUNT)
s_algorithm = dx7_algorithm[clipminmaxi32(0, algidx, ALGORITHM_COUNT + CUSTOM_ALGORITHM_COUNT - 1)];
#else
s_algorithm = dx7_algorithm[clipminmaxi32(0, (s_algorithm_select == 0 ? s_algorithm_idx : s_algorithm_select - 1) + s_algorithm_offset, ALGORITHM_COUNT - 1)];
#endif
#endif
s_feedback_dst_alg[0] = OPERATOR_COUNT;
#if FEEDBACK_COUNT == 2
s_feedback_dst_alg[1] = OPERATOR_COUNT;
#endif
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
#ifndef MOD16
s_algorithm[i] = dx7_algorithm[clipminmaxi32(0, (s_algorithm_select == 0 ? s_algorithm_idx : s_algorithm_select - 1) + s_algorithm_offset, ALGORITHM_COUNT - 1)][i];
#endif
#ifdef CUSTOM_ALGORITHM_COUNT
if (algidx < ALGORITHM_COUNT) {
#endif
for (uint32_t fbidx = 0; fbidx < FEEDBACK_COUNT; fbidx++) {
if (s_algorithm[i] & (ALG_FBK_MASK << fbidx)) {
s_feedback_src_alg[fbidx] = s_algorithm[i] & (ALG_FBK_MASK - 1);
s_feedback_dst_alg[fbidx] = i;
#ifndef MOD16
s_algorithm[i] &= ~(ALG_FBK_MASK - 1);
#endif
}
}
if (s_algorithm[i] & ALG_OUT_MASK)
comp++;
#ifdef CUSTOM_ALGORITHM_COUNT
} else {
comp += custom_algorithm[algidx - ALGORITHM_COUNT][i][OPERATOR_COUNT];
}
#endif
#ifdef MOD16
for (uint32_t j = 0; j < OPERATOR_COUNT; j++) {
#ifdef CUSTOM_ALGORITHM_COUNT
if (algidx < ALGORITHM_COUNT) {
#endif
if ((j < (OPERATOR_COUNT - 1)) && (s_algorithm[i] & (1 << j)) && !(s_algorithm[i] & (ALG_FBK_MASK + ALG_FBK2_MASK)))
s_modmatrix[i][j] = MI_SCALE_FACTOR;
else
s_modmatrix[i][j] = 0;
#ifdef CUSTOM_ALGORITHM_COUNT
} else {
s_modmatrix[i][j] = (custom_algorithm[algidx - ALGORITHM_COUNT][i][j] * CUSTOM_MI_SCALE_FACTOR) >> 16;
}
#endif
}
#endif
}
setFeedbackRoute(0);
#if FEEDBACK_COUNT == 2
setFeedbackRoute(1);
#endif
#ifdef CUSTOM_ALGORITHM_COUNT
if (algidx >= ALGORITHM_COUNT)
comp = 0x7FFFFFFF / comp;
#endif
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
#ifdef CUSTOM_ALGORITHM_COUNT
if (algidx < ALGORITHM_COUNT) {
#endif
if (s_algorithm[i] & ALG_OUT_MASK)
s_comp[i] = compensation[comp - 1];
else
s_comp[i] = 0;
#ifdef CUSTOM_ALGORITHM_COUNT
} else {
// s_comp[i] = (custom_algorithm[algidx - ALGORITHM_COUNT][i][OPERATOR_COUNT] * CUSTOM_OUT_SCALE_FACTOR) >> 16;
s_comp[i] = (custom_algorithm[algidx - ALGORITHM_COUNT][i][OPERATOR_COUNT] * comp) >> 16;
}
#endif
}
#ifdef WFBITS
setWaveform();
#endif
}
static inline __attribute__((optimize("Ofast"), always_inline))
void initvoice(int32_t voice_index) {
voice_index %= BANK_COUNT * BANK_SIZE;
if (voice_index < 0)
voice_index += BANK_COUNT * BANK_SIZE;
if (dx_voices[0][voice_index].dx7.vnam[0]) {
#ifdef OP6
const dx7_voice_t *voice = &dx_voices[0][voice_index].dx7;
s_opi = voice->opi;
s_algorithm_idx = voice->als;
s_transpose = voice->trnp - TRANSPOSE_CENTER;
s_feedback_level[0] = voice->fbl;
#ifdef PEG
s_peg_stage_start = PEG_STAGE_COUNT - DX7_PEG_STAGE_COUNT;
for (uint32_t i = s_peg_stage_start; i < PEG_STAGE_COUNT; i++) {
s_peglevel[i] = scale_pitch_level(voice->pl[i - s_peg_stage_start]) * PEG_SCALE;
s_pegrate[i] = scale_pitch_rate(voice->pr[i - s_peg_stage_start]) * PEG_RATE_SCALE;
}
#endif
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
s_pitchfreq[i] = !voice->op[i].pm;
s_detune[i] = (voice->op[i].pd - DX7_DETUNE_CENTER) * 3;
#ifdef WFBITS
#ifdef TWEAK_WF
s_op_waveform[i] = voice->op[i].osw & ((1 << WFBITS) - 1);
#else
s_op_waveform[i] = 0;
#endif
#endif
s_phase[i] = 0;
//todo: check dx7 D1/D2/R rates
for (uint32_t j = 0; j < EG_STAGE_COUNT; j++) {
s_egrate[i][j] = voice->op[i].r[j];
s_eglevel[i][j] = scale_level(voice->op[i].l[j]) * LEVEL_SCALE_FACTOR;
}
if (s_pitchfreq[i])
s_oppitch[i] = f32_to_pitch(((voice->op[i].pc == 0 ? .5f : voice->op[i].pc) * (1.f + voice->op[i].pf * .01f)));
else
s_oppitch[i] = f32_to_pitch(fastexpf(M_LN10 * ((voice->op[i].pc & 3) + voice->op[i].pf * .01f)) * k_samplerate_recipf);
s_kvs[i] = voice->op[i].ts;
s_op_rate_scale[i] = voice->op[i].rs * DX7_RATE_SCALING_FACTOR;
s_op_level[i] = voice->op[i].tl;
s_break_point[i] = voice->op[i].bp + NOTE_A_1;
//fold negative/position curves into curve depth sign
s_left_depth[i] = voice->op[i].ld;
s_right_depth[i] = voice->op[i].rd;
if (voice->op[i].lc < 2) {
s_left_curve[i] = voice->op[i].lc;
} else {
s_left_curve[i] = 5 - voice->op[i].lc;
}
if (voice->op[i].rc < 2) {
s_right_curve[i] = voice->op[i].rc;
} else {
s_right_curve[i] = 5 - voice->op[i].rc;
}
}
s_attack_rate_exp_factor = DX7_RATE_EXP_FACTOR;
s_release_rate_exp_factor = DX7_RATE_EXP_FACTOR;
s_level_scale_factor = DX7_LEVEL_SCALE_FACTOR;
#endif
} else {
#ifdef OP4
const dx11_voice_t *voice = &dx_voices[0][voice_index].dx11;
#ifdef TWEAK_ALG
s_algorithm_idx = dx11_algorithm_lut[voice->alg + (voice->alghi << 3)];
#else
s_algorithm_idx = dx11_algorithm_lut[voice->alg];
#endif
s_opi = 0;
s_transpose = voice->trps - TRANSPOSE_CENTER;
s_feedback_level[0] = voice->fbl;
#ifdef PEG
s_peg_stage_start = PEG_STAGE_COUNT - DX11_PEG_STAGE_COUNT;
for (uint32_t i = s_peg_stage_start; i < PEG_STAGE_COUNT; i++) {
s_peglevel[i] = scale_pitch_level(voice->pl[i - s_peg_stage_start]) * PEG_SCALE;
s_pegrate[i] = scale_pitch_rate(voice->pr[i - s_peg_stage_start]) * PEG_RATE_SCALE;
}
#endif
for (uint32_t k = DX11_OPERATOR_COUNT; k--;) {
uint32_t i;
if (s_algorithm_idx == 7)
i = dx11_alg3_op_lut[k];
else
i = k;
s_pitchfreq[i] = !voice->opadd[i].fixrg;
s_detune[i] = (voice->op[i].det - DX11_DETUNE_CENTER) * 3;
#ifdef WFBITS
s_op_waveform[i] = voice->opadd[i].osw & ((1 << WFBITS) - 1);
#endif
s_phase[i] = 0;
//todo: check dx11 rates
for (uint32_t j = 0; j < EG_STAGE_COUNT; j++) {
s_egrate[i][j] = j == (EG_STAGE_COUNT - 1) && voice->op[i].r[j] == 0 ? 1 : voice->op[i].r[j]; //zero release rate workaround from TX81Z
s_eglevel[i][j] = f32_to_q31(1.f - (1.f - (j == 0 ? 1.f : (j == 1 || (j == 2 && voice->op[i].r[j] == 0)) ? scale_level(voice->op[i].d1l * DX11_TO_DX7_LEVEL_SCALE_FACTOR) * LEVEL_SCALE_FACTOR : 0.f)) / (1 << (i != 3 ? voice->opadd[i].egsft : 0)));
}
//todo: Fine freq ratio
//https://github.com/mamedev/mame/blob/master/src/devices/sound/ym2151.cpp
//dt2_tab = { 0/768, 384/768, 500/768, 608/768 }
//pitch = 2 ^ (key/12 + LFO in + dt2_tab[op dt2]) * op ratio + keytracked op detune * op ratio
if (s_pitchfreq[i])
s_oppitch[i] = f32_to_pitch(dx11_ratio_lut[voice->op[i].f]);
// s_oppitch[i] = log2f(dx11_ratio_lut[voice->op[i].f]) * 256.f * 12.f;
else
s_oppitch[i] = f32_to_pitch(((((voice->op[i].f & 0x3C) << 2) + voice->opadd[i].fine + (voice->op[i].f < 4 ? 8 : 0)) << voice->opadd[i].fixrg) * k_samplerate_recipf);
// s_oppitch[i] = log2f(((((voice->op[i].f & 0x3C) << 2) + voice->opadd[i].fine + (voice->op[i].f < 4 ? 8 : 0)) << voice->opadd[i].fixrg)) * 256.f * 12.f;
s_kvs[i] = voice->op[i].kvs;
s_op_rate_scale[i] = voice->op[i].rs * DX11_RATE_SCALING_FACTOR;
s_op_level[i] = voice->op[i].out;
s_left_depth[i] = 0;
s_right_depth[i] = - voice->op[i].ls;
s_left_curve[i] = 0;
s_right_curve[i] = 0;
s_break_point[i] = NOTE_C1;
}
s_attack_rate_exp_factor = DX11_RATE_EXP_FACTOR;
s_release_rate_exp_factor = DX11_RELEASE_RATE_EXP_FACTOR;
s_level_scale_factor = DX11_LEVEL_SCALE_FACTOR;
#ifdef OP6
s_op_level[4] = 0;
s_op_level[5] = 0;
s_kvs[4] = 0;
s_kvs[5] = 0;
for (uint32_t j = 0; j < EG_STAGE_COUNT; j++) {
s_egrate[4][j] = 0;
s_egrate[5][j] = 0;
s_eglevel[4][j] = 0;
s_eglevel[5][j] = 0;
}
#endif
#endif
}
setAlgorithm();
setOutLevel();
setKvsLevel();
setVelocityLevel();
for (uint32_t i = 0; i < FEEDBACK_COUNT; i++)
setFeedback(i);
for (uint32_t i = 0; i < OPERATOR_COUNT + FEEDBACK_COUNT * 2; i++)
s_opval[i] = 0;
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
s_sample_count[i][EG_STAGE_COUNT - 1] = 0xFFFFFFFF;
s_egsrate[i][EG_STAGE_COUNT - 1] = 0;
s_egstage[i] = EG_STAGE_COUNT - 1;
s_egval[i] = 0;
}
#ifdef PEG
uint32_t samples = 0;
int32_t dl;
for (uint32_t i = s_peg_stage_start; i < PEG_STAGE_COUNT - 1; i++) {
dl = (s_peglevel[i] - s_peglevel[i != s_peg_stage_start ? i - 1 : PEG_STAGE_COUNT - 1]);
if (dl < 0)
s_pegrate[i] = -s_pegrate[i];
samples += dl / s_pegrate[i];
s_peg_sample_count[i] = samples;
}
s_pegrate[PEG_STAGE_COUNT] = s_pegrate[PEG_STAGE_COUNT - 1];
s_pegrate_releaserecip = 1.f / s_pegrate[PEG_STAGE_COUNT];
s_pegrate[PEG_STAGE_COUNT - 1] = 0;
s_peg_sample_count[PEG_STAGE_COUNT - 1] = 0xFFFFFFFF;
s_pegstage = PEG_STAGE_COUNT - 1;
s_pegval = 0;
#endif
}
#ifdef WFROM
void OSC_INIT(__attribute__((unused)) uint32_t platform, __attribute__((unused)) uint32_t api)
{
osc_wave_init_all();
}
#endif
void OSC_CYCLE(const user_osc_param_t * const params, int32_t *yn, const uint32_t frames)
{
if (s_state) {
#ifdef WFGEN
if ((s_state & state_wave_changed) != 0) {
uint32_t i = 0;
for (i = 0; i < OPERATOR_COUNT && s_waveform[i] == s_waveform_current[i]; i++);
if (i < OPERATOR_COUNT) {
osc_wavebank_preload(i, s_waveform[i]);
s_waveform_current[i] = s_waveform[i];
for (uint32_t f = frames; f--; *yn++ = 0);
} else
s_state &= ~state_wave_changed;
return;
/*
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
if (s_waveform[i] != s_waveform_current[i]) {
osc_wavebank_preload(i, s_waveform[i]);
s_waveform_current[i] = s_waveform[i];
}
}
for (uint32_t f = frames; f--; *yn++ = 0);
s_state &= ~state_wave_changed;
return;
*/
}
#endif
if (s_state == state_noteon) {
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
for (uint32_t j = 0; j < EG_STAGE_COUNT - 1; j++) {
s_egsrate[i][j] = s_egsrate[i][j + EG_STAGE_COUNT];
s_sample_count[i][j] = s_sample_count[i][j + EG_STAGE_COUNT];
}
s_egstage[i] = 0;
if (s_opi)
s_phase[i] = 0;
//todo: to reset or not to reset - that is the question (stick with the operator phase init)
s_opval[i] = 0;
s_egval[i] = s_eglevel[i][EG_STAGE_COUNT - 1];
// setLevel();
// make it non-negative and apply -96dB to further fit EG level
// s_oplevel[i] = q31sub((usat_lsl(31, q31add(s_level_scaling[i], s_velocitylevel[i]), 0)), 0x7F000000);
setOpLevel(i);
}
s_sample_num = 0;
#ifdef PEG
s_pegval = s_peglevel[PEG_STAGE_COUNT - 1];
s_pegstage = s_peg_stage_start;
#endif
s_state &= ~state_noteon;
} else {
int32_t dl;
uint32_t samples;
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
samples = s_sample_num;
dl = s_eglevel[i][EG_STAGE_COUNT - 1] - s_egval[i];
if (dl != 0) {
if (dl < 0) {
samples += dl * s_egsrate_recip[i][0];
} else {
s_egsrate[i][EG_STAGE_COUNT - 1] = s_egsrate[i][EG_STAGE_COUNT * 2 - 1];
samples += dl * s_egsrate_recip[i][1];
}
} else {
s_egsrate[i][EG_STAGE_COUNT - 1] = 0;
}
s_sample_count[i][EG_STAGE_COUNT - 1] = samples;
s_egstage[i] = EG_STAGE_COUNT - 1;
}
#ifdef PEG
dl = s_peglevel[PEG_STAGE_COUNT - 1] - s_pegval;
if (dl < 0) {
s_pegrate[PEG_STAGE_COUNT - 1] = - s_pegrate[PEG_STAGE_COUNT];
s_peg_sample_count[PEG_STAGE_COUNT - 1] = s_sample_num - dl * s_pegrate_releaserecip;
} else {
s_pegrate[PEG_STAGE_COUNT - 1] = s_pegrate[PEG_STAGE_COUNT];
s_peg_sample_count[PEG_STAGE_COUNT - 1] = s_sample_num + dl * s_pegrate_releaserecip;
}
s_pegstage = PEG_STAGE_COUNT - 1;
#endif
s_state &= ~(state_noteoff | state_noteon);
}
}
q31_t osc_out, modw0;
q31_t opw0[OPERATOR_COUNT];
#ifdef FINE_TUNE
uint32_t pitch = params->pitch << 16;
#else
uint32_t pitch = params->pitch;
#endif
#ifndef KIT_MODE
if (s_kit_voice)
#endif
#ifdef FINE_TUNE
pitch = KIT_CENTER << 24;
#else
pitch = KIT_CENTER << 8;
#endif
// int32_t pitch = params->pitch + s_transpose;
#ifdef PEG
#ifdef FINE_TUNE
pitch += s_pegval;
#else
pitch += s_pegval >> 16;
#endif
#endif
// pitch_t basew0 = f32_to_pitch(osc_w0f_for_note((pitch >> 8) + s_transpose, pitch & 0xFF));
pitch_t basew0;
for (uint32_t i = 0; i < OPERATOR_COUNT; i++) {
if (s_pitchfreq[i]) {
#ifdef FINE_TUNE
uint32_t p;
p = pitch + (s_detune[i] + paramOffset(s_detune_offset, i) * 2.56f) * paramScale(s_detune_scale, i) * FINE_TUNE_FACTOR;
uint8_t note = clipmini32(0, (p >> 24) + s_zone_transposed);
basew0 = f32_to_pitch(clipmaxf(linintf((p & 0xFFFFFF) * 5.9604645e-8f, osc_notehzf(note), osc_notehzf(note + 1)), k_note_max_hz) * k_samplerate_recipf);
#else
basew0 = f32_to_pitch(osc_w0f_for_note(((pitch + s_detune[i]) >> 8) + s_transpose, (pitch + s_detune[i]) & 0xFF));
#endif
opw0[i] = pitch_to_phase(pitch_mul(s_oppitch[i], basew0));
} else
opw0[i] = pitch_to_phase(s_oppitch[i]);
/*
int32_t p = s_oppitch[i] + s_detune[i];
if (s_pitchfreq[i])
p += pitch;
p = usat(p, 16);
opw0[i] = f32_to_q31(osc_w0f_for_note(p >> 8, p & 0xFF));
*/
}
q31_t * __restrict y = (q31_t *)yn;
///ldr r10, &s_opval
///ldm r10, {r0, r1, r2, r3}
for (uint32_t f = frames; f--; y++) {
#ifdef ROLLOUT
modw0 = 0;
__asm__ volatile ( \
"lsls r1, %[s_algorithm_i], #26\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #24]\n" \
"addmi %[modw0], %[modw0], r1\n" \
: [modw0] "+r" (modw0) \
: [s_algorithm_i] "l" (s_algorithm[0]), [s_opval] "r" (s_opval) \
: "r1" \
);
modw0 = ((smmul(modw0, MI_SCALE_FACTOR)) << 3) + s_phase[0];
#ifdef WFBITS
s_opval[0] = smmul(osc_wavebank(modw0, s_waveform[0]), param_eglut(s_egval[0], s_oplevel[0])) << 1;
#else
s_opval[0] = smmul(osc_sinq(modw0), param_eglut(s_egval[0], s_oplevel[0])) << 1;
#endif
modw0 = 0;
__asm__ volatile ( \
"lsls r1, %[s_algorithm_i], #26\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #24]\n" \
"addmi %[modw0], %[modw0], r1\n" \
"lsls r1, %[s_algorithm_i], #31\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #0]\n" \
"addmi %[modw0], %[modw0], r1\n" \
: [modw0] "+r" (modw0) \
: [s_algorithm_i] "l" (s_algorithm[1]), [s_opval] "r" (s_opval) \
: "r1" \
);
modw0 = ((smmul(modw0, MI_SCALE_FACTOR)) << 3) + s_phase[1];
#ifdef WFBITS
s_opval[1] = smmul(osc_wavebank(modw0, s_waveform[1]), param_eglut(s_egval[1], s_oplevel[1])) << 1;
#else
s_opval[1] = smmul(osc_sinq(modw0), param_eglut(s_egval[1], s_oplevel[1])) << 1;
#endif
modw0 = 0;
__asm__ volatile ( \
"lsls r1, %[s_algorithm_i], #26\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #24]\n" \
"addmi %[modw0], %[modw0], r1\n" \
"lsls r1, %[s_algorithm_i], #30\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #4]\n" \
"addmi %[modw0], %[modw0], r1\n" \
"lsls r1, %[s_algorithm_i], #31\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #0]\n" \
"addmi %[modw0], %[modw0], r1\n" \
"end%=:\n" \
: [modw0] "+r" (modw0) \
: [s_algorithm_i] "l" (s_algorithm[2]), [s_opval] "r" (s_opval) \
: "r1" \
);
modw0 = ((smmul(modw0, MI_SCALE_FACTOR)) << 3) + s_phase[2];
#ifdef WFBITS
s_opval[2] = smmul(osc_wavebank(modw0, s_waveform[2]), param_eglut(s_egval[2], s_oplevel[2])) << 1;
#else
s_opval[2] = smmul(osc_sinq(modw0), param_eglut(s_egval[2], s_oplevel[2])) << 1;
#endif
modw0 = 0;
__asm__ volatile ( \
"lsls r1, %[s_algorithm_i], #26\n" \
"itt mi\n" \
"ldrmi.w r1, [%[s_opval], #24]\n" \
"addmi %[modw0], %[modw0], r1\n" \
"lsls r1, %[s_algorithm_i], #29\n" \