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iidx, sdvx: SOCD cleaner for knobs and turntables (#497)

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## Link to GitHub Issue, if one exists
n/a

## Description of change
Apply SOCD cleaner algorithm to deal with the case where both
counter-clockwise and clockwise buttons are pressed at the same time.

In SDVX, default algorithm is to prefer the most recently pressed
direction. This is better for dealing with slams in rapid succession,
for example, as you don't have to completely let go of one direction to
hit the other now.

In IIDX, default algorithm is neutral (same behavior as before). Using
last or first algorithm results in double scratches which means you'll
likely end up with an excessive poor after hitting a scratch, so neutral
is actually beneficial. Besides, if you are serious about playing on the
keyboard, you should be using `TT +/-` and `TT +/- Alternate`.

## Testing
Tested SDVX 3, EG (old cab), EG valk cab modes, IIDX 24, 27, 33
(tdj/ldj)
This commit is contained in:
bicarus
2026-01-04 19:50:11 -08:00
committed by GitHub
parent 7f281a50c5
commit 7b903d35e2
10 changed files with 262 additions and 24 deletions
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src/spice2x/acio/kfca/kfca.cpp
+26 -6
View File
@@ -8,10 +8,21 @@
#include "games/sdvx/io.h"
#include "misc/eamuse.h"
#include "rawinput/rawinput.h"
#include "util/socd_cleaner.h"
#include "util/time.h"
#include "util/utils.h"
using namespace GameAPI;
#define DEBUG_VERBOSE 0
#if DEBUG_VERBOSE
#define log_debug(module, format_str, ...) logger::push( \
LOG_FORMAT("M", module, format_str, ## __VA_ARGS__), logger::Style::GREY)
#else
#define log_debug(module, format_str, ...)
#endif
// globals
uint8_t KFCA_VOL_SOUND = 96;
uint8_t KFCA_VOL_HEADPHONE = 96;
@@ -342,18 +353,25 @@ static char __cdecl ac_io_kfca_update_control_status_buffer() {
}
// volume left
if (Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_L_Left))) {
const auto now = get_performance_milliseconds();
const auto vol_l_state = socd::socd_clean(0,
Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_L_Left)),
Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_L_Right)),
now);
if (vol_l_state == socd::SocdCCW) {
KFCA_VOLL = (KFCA_VOLL - games::sdvx::DIGITAL_KNOB_SENS) & 1023;
}
if (Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_L_Right))) {
} else if (vol_l_state == socd::SocdCW) {
KFCA_VOLL = (KFCA_VOLL + games::sdvx::DIGITAL_KNOB_SENS) & 1023;
}
// volume right
if (Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_R_Left))) {
const auto vol_r_state = socd::socd_clean(1,
Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_R_Left)),
Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_R_Right)),
now);
if (vol_r_state == socd::SocdCCW) {
KFCA_VOLR = (KFCA_VOLR - games::sdvx::DIGITAL_KNOB_SENS) & 1023;
}
if (Buttons::getState(RI_MGR, buttons.at(games::sdvx::Buttons::VOL_R_Right))) {
} else if (vol_r_state == socd::SocdCW) {
KFCA_VOLR = (KFCA_VOLR + games::sdvx::DIGITAL_KNOB_SENS) & 1023;
}
@@ -371,6 +389,8 @@ static char __cdecl ac_io_kfca_update_control_status_buffer() {
// proper loops
vol_left %= 1024;
vol_right %= 1024;
log_debug("kfca", "knobs = {} {}", vol_left, vol_right);
// save volumes in buffer
STATUS_BUFFER[input_offset + 16 + 0] |= (unsigned char) ((vol_left << 6) & 0xFF);