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1243 lines (1112 loc) · 36.8 KB
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#include "math.h"
#include "types.h"
#include "libswirl.h"
// #include "xparameters.h"
// #include "xdebug.h"
// #include "sleep.h"
#include <stdio.h>
#include <stdarg.h>
#include "cfg/cfg.h"
//Joystick stuff
#include <fcntl.h>
#include <unistd.h>
#include <atomic>
#include "hw/pvr/pvr_regs.h"
#include "rend/mister_rend/mister_support.h"
std::atomic<bool> vram_dump_pending;
static unsigned vram_dump_number;
u32 pvr_map32(u32 offset32);
void do_vram_dump(u8* vram, u8* pvr_regs) {
if (vram_dump_pending.exchange(false)) {
FILE* f = fopen(("vram_" + std::to_string(vram_dump_number) + ".bin").c_str(), "wb");
if (!f) {
printf("Failed to open vram_dump.bin\n");
return;
}
for (unsigned i = 0; i < VRAM_SIZE; i+=4) {
if (fwrite(&vram[pvr_map32(i)], 4, 1, f) != 1) {
printf("Failed to write vram_dump.bin\n");
fclose(f);
return;
}
}
fclose(f);
f = fopen(("pvr_regs_" + std::to_string(vram_dump_number) + ".bin").c_str(), "wb");
if (!f) {
printf("Failed to open pvr_regs.bin\n");
return;
}
if (fwrite(pvr_regs, pvr_RegSize, 1, f) != 1) {
printf("Failed to write pvr_regs.bin\n");
fclose(f);
return;
}
fclose(f);
printf("Frame dumped -> vram_%d.bin/pvr_regs_%d.bin\n", vram_dump_number, vram_dump_number);
vram_dump_number++;
}
}
#include "hw/sh4/sh4_mem.h" // SaveRomFiles
#include <signal.h>
#include <pthread.h>
#include "stdclass.h"
// The fast exits below (_exit on ESC / mapped Exit, SIGTERM from the
// launcher) skip the normal teardown, which is what writes the Dreamcast
// flash (BIOS settings: language, audio mode, ...) back to dc_nvmem.bin.
static void save_before_exit()
{
// same directory LoadRomFiles reads (libswirl.cpp), where dc_nvmem.bin
// takes precedence over dc_flash.bin on the next boot
SaveRomFiles("/media/fat/games/Dreamcast/");
fflush(stdout);
sync();
}
// SIGTERM is blocked in every thread and taken here synchronously, so the
// save runs in a normal thread context, not inside a signal handler.
static void* sigterm_thread(void* arg)
{
sigset_t* set = (sigset_t*)arg;
int sig = 0;
if (sigwait(set, &sig) == 0) {
printf("minicast: SIGTERM, saving flash and exiting%c", 10);
fflush(stdout);
save_before_exit();
_exit(0);
}
return nullptr;
}
int main(int argc, char* argv[])
{
static sigset_t term_set;
sigemptyset(&term_set);
sigaddset(&term_set, SIGTERM);
pthread_sigmask(SIG_BLOCK, &term_set, nullptr);
pthread_t term_thread;
pthread_create(&term_thread, nullptr, sigterm_thread, &term_set);
#if HOST_OS == OS_LINUX
void common_linux_setup();
common_linux_setup();
#endif
set_user_config_dir(".");
set_user_data_dir(".");
add_system_config_dir(".");
add_system_data_dir(".");
ParseCommandLine(argc, argv);
cfgOpen();
libswirl_init();
libswirl_loop(argc == 1 ? "": argv[1]);
return 0;
}
void os_DebugBreak()
{
for(;;);
}
int msgboxf(char const* msg, unsigned int d, ...) {
char buffer[512];
va_list args;
va_start (args, d);
vsnprintf (buffer,512,msg, args);
puts (buffer);
va_end (args);
return 0;
}
bool rc_serialize(void* src, unsigned int src_size, void** dest, unsigned int* total_size) { return false; }
bool rc_unserialize(void* src, unsigned int src_size, void** dest, unsigned int* total_size) { return false; }
bool dc_serialize(void** data, unsigned int* total_size) { return false; }
bool dc_unserialize(void** data, unsigned int* total_size) { return false; }
struct RegisterStruct;
bool register_serialize(RegisterStruct* regs, size_t size, void** data, unsigned int* total_size) { return false; }
bool register_unserialize(RegisterStruct* regs, size_t size, void** data, unsigned int* total_size) { return false; }
#if defined(FAUX96)
#include <sys/time.h>
#endif
#if HOST_OS==OS_XIL_BARE
double os_GetSeconds()
{
#if defined(FAUX96)
timeval a;
gettimeofday (&a,0);
static u64 tvs_base=a.tv_sec;
return a.tv_sec-tvs_base+a.tv_usec/1000000.0;
#else
die("os_GetSeconds()");
return 0;
#endif
}
#endif
u16 kcode[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
u8 rt[4] = {0, 0, 0, 0};
u8 lt[4] = {0, 0, 0, 0};
u32 vks[4];
s8 joyx[4] = {0, 0, 0, 0};
s8 joyy[4] = {0, 0, 0, 0};
#include "oslib/threading.h"
#include <pthread.h>
#if !defined(HOST_NO_THREADS)
void cThread::Start() {
hThread = new pthread_t;
// pthread_create( hThread, NULL, entry, param);
}
void cThread::WaitToEnd() {
if (hThread) {
// pthread_join(*hThread,0);
delete hThread;
hThread = NULL;
}
}
cMutex::cMutex() {
// pthread_mutex_init(&mutx, NULL);
}
cMutex::~cMutex() {
// pthread_mutex_destroy(&mutx);
}
void cMutex::Lock() {
// pthread_mutex_lock(&mutx);
}
bool cMutex::TryLock() {
// return pthread_mutex_trylock(&mutx)==0;
return false;
}
void cMutex::Unlock() {
// pthread_mutex_unlock(&mutx);
}
cResetEvent::cResetEvent() {
// pthread_mutex_init(&mutx, NULL);
// pthread_cond_init(&cond, NULL);
}
cResetEvent::~cResetEvent() {
}
void cResetEvent::Set()//Signal
{
// pthread_mutex_lock( &mutx );
// state=true;
// pthread_cond_signal( &cond);
// pthread_mutex_unlock( &mutx );
}
void cResetEvent::Reset()//reset
{
// pthread_mutex_lock( &mutx );
// state=false;
// pthread_mutex_unlock( &mutx );
}
bool cResetEvent::Wait(unsigned msec)//Wait for signal , then reset
{
// pthread_mutex_lock( &mutx );
// if (!state)
// {
// struct timespec ts;
// #if HOST_OS == OS_DARWIN
// // OSX doesn't have clock_gettime.
// clock_serv_t cclock;
// mach_timespec_t mts;
// host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
// clock_get_time(cclock, &mts);
// mach_port_deallocate(mach_task_self(), cclock);
// ts.tv_sec = mts.tv_sec;
// ts.tv_nsec = mts.tv_nsec;
// #else
// clock_gettime(CLOCK_REALTIME, &ts);
// #endif
// ts.tv_sec += msec / 1000;
// ts.tv_nsec += (msec % 1000) * 1000000;
// while (ts.tv_nsec > 1000000000)
// {
// ts.tv_nsec -= 1000000000;
// ts.tv_sec++;
// }
// pthread_cond_timedwait( &cond, &mutx, &ts );
// }
// bool rc = state;
// state=false;
// pthread_mutex_unlock( &mutx );
// return rc;
return false;
}
void cResetEvent::Wait()//Wait for signal , then reset
{
// pthread_mutex_lock( &mutx );
// if (!state)
// {
// pthread_cond_wait( &cond, &mutx );
// }
// state=false;
// pthread_mutex_unlock( &mutx );
}
#endif
void SleepMs(unsigned count) {
// usleep(count * 1000);
}
int posix_memalign(void **memptr, size_t alignment, size_t size) {
*memptr=aligned_alloc(alignment, size);
return *memptr == 0;
}
void prof_periodical() { }
char naomi_game_id[33];
struct InputDescriptors;
InputDescriptors *NaomiGameInputs;
u8 *naomi_default_eeprom;
u32 PVR_VTXC;
void os_SetWindowText(char const* msg) {
//die("os_SetWindowText(char const*)");
msgboxf("SetWindowText: %s\n", 0, msg);
}
void push_vmu_screen(int, int, unsigned char*) {
}
int get_mic_data(unsigned char*) { // no microphone on this build
return 0;
}
bool bios_loaded;
#if HOST_OS == OS_XIL_BARE
void VLockedMemory::LockRegion(unsigned offset, unsigned size_bytes) {
#ifndef TARGET_NO_EXCEPTIONS
#endif
}
void VLockedMemory::UnLockRegion(unsigned offset, unsigned size_bytes) {
#ifndef TARGET_NO_EXCEPTIONS
#endif
}
#endif
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
int kbhit(void) {
struct termios oldt, newt;
int ch;
int oldf;
// Get current terminal settings
tcgetattr(STDIN_FILENO, &oldt);
newt = oldt;
// Disable canonical mode and echo
newt.c_lflag &= ~(ICANON | ECHO);
tcsetattr(STDIN_FILENO, TCSANOW, &newt);
// Remember old file status flags, then set non-blocking
oldf = fcntl(STDIN_FILENO, F_GETFL, 0);
fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);
// Try to read
ch = getchar();
// Restore old settings
tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
fcntl(STDIN_FILENO, F_SETFL, oldf);
if (ch != EOF) {
// If we got a character, push it back so we can read it later
ungetc(ch, stdin);
return 1;
}
return 0;
}
#include "input/gamepad.h"
// ---------------------------------------------------------------------------
// evdev input mapping, driven by the emu.cfg [input0]..[inputN] sections
// written by Scripts/DreamSTer.sh. Mapping value grammar (colon separated):
// key:<code> button/key press
// keys:<neg>:<pos> key pair driving an axis (-1 = unset)
// abs:<code>:<dir> absolute axis, dir 1 or -1
// rel:<code>:<dir> relative axis (mouse motion)
// Devices are matched by DeviceId = bus:vid:pid:ver[:uniq][#n] (all hex,
// #n disambiguates identical ids in /dev/input/event* numeric order).
// If emu.cfg has no [inputN] sections, the legacy /dev/input/js0 mapping
// below is used instead.
//
// Each device feeds the maple port its [inputN] `Port` key selects (0..3 =
// A..D, default 0/A). Devices sharing a port merge: buttons are logically
// OR'd, for axes the value with the biggest absolute value wins. The
// matching maple bus must have a controller ([input] deviceN = 0;
// DreamSTer.sh enables it for every port in use).
//
// ESC on any evdev device (mapped or not) is a hardcoded exit; Print Screen
// queues an spg_screenshot the same way (taken at the next SPG vblank).
// ButtonExit / ButtonScreenshot in an [inputN] section additionally map a
// per-device button (or key) to the same two actions.
#include <linux/input.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <glob.h>
#include <string.h>
#include <stdlib.h>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
enum InTarget {
TGT_DPAD_UP, TGT_DPAD_DOWN, TGT_DPAD_LEFT, TGT_DPAD_RIGHT,
TGT_BTN_A, TGT_BTN_B, TGT_BTN_X, TGT_BTN_Y, TGT_BTN_START,
TGT_ANALOG_X, TGT_ANALOG_Y, TGT_TRIG_L, TGT_TRIG_R,
// emulator actions (no DC pad bit): exit + screenshot, mappable per
// device via DreamSTer.sh, IN ADDITION to the hardcoded ESC / SYSRQ
TGT_BTN_EXIT, TGT_BTN_SCREENSHOT,
TGT_COUNT
};
static const char* TARGET_CFG_KEYS[TGT_COUNT] = {
"DpadUp", "DpadDown", "DpadLeft", "DpadRight",
"ButtonA", "ButtonB", "ButtonX", "ButtonY", "ButtonStart",
"AxisX", "AxisY", "TriggerL", "TriggerR",
"ButtonExit", "ButtonScreenshot",
};
static const u16 TARGET_BTN_BIT[TGT_COUNT] = {
DC_DPAD_UP, DC_DPAD_DOWN, DC_DPAD_LEFT, DC_DPAD_RIGHT,
DC_BTN_A, DC_BTN_B, DC_BTN_X, DC_BTN_Y, DC_BTN_START,
0, 0, 0, 0,
0, 0,
};
struct InMapping {
enum Kind { NONE, KEY, KEYPAIR, ABS, REL } kind;
int code; // KEY/ABS/REL
int dir; // ABS/REL: 1 or -1
int neg, pos; // KEYPAIR key codes, -1 = unset
};
static bool decode_mapping(const char* text, InMapping* m) {
int a, b;
memset(m, 0, sizeof(*m));
m->kind = InMapping::NONE;
m->neg = m->pos = -1;
m->dir = 1;
if (sscanf(text, "key:%d", &a) == 1) {
m->kind = InMapping::KEY; m->code = a;
} else if (sscanf(text, "keys:%d:%d", &a, &b) == 2) {
m->kind = InMapping::KEYPAIR; m->neg = a; m->pos = b;
} else if (sscanf(text, "abs:%d:%d", &a, &b) == 2) {
m->kind = InMapping::ABS; m->code = a; m->dir = b >= 0 ? 1 : -1;
} else if (sscanf(text, "rel:%d:%d", &a, &b) == 2) {
m->kind = InMapping::REL; m->code = a; m->dir = b >= 0 ? 1 : -1;
}
return m->kind != InMapping::NONE;
}
// ------------------------------------------------------------------------
// maple keyboard / mouse feeding: a device whose configured port carries a
// DC keyboard or mouse ([input] deviceN = 4/5, set by DreamSTer.sh's
// Peripherals page) drives the maple device state polled by maple_devs.cpp
// (this is the only writer on the MiSTer build - the libswirl/input and
// linux-dist frontends that normally feed these globals are compiled out).
#include "hw/maple/maple_devs.h" // MDT_* device types
#include "hw/sh4/sh4_mem.h" // SaveRomFiles
// The exit keys below leave via _exit(), skipping the teardown that writes
// the Dreamcast flash back - save it first so BIOS settings (language,
// stereo/mono, ...) persist. Same folder LoadRomFiles reads it from.
static void save_flash_before_exit() {
SaveRomFiles("/media/fat/games/Dreamcast/");
sync();
}
extern u8 kb_key[6]; // DC keyboard matrix: up to 6 held keys (HID codes)
extern u8 kb_shift; // DC keyboard modifier bitmask (HID byte)
extern u32 mo_buttons; // DC mouse buttons, active low
extern f32 mo_x_delta, mo_y_delta, mo_wheel_delta;
// linux evdev keycode -> DC (USB HID) keyboard usage code; modifiers are
// handled separately via dc_kbd_input, 0 = no DC equivalent
static const u8 LINUX_TO_DC_KEY[128] = {
/* 0 */ 0, 0x29, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, // ESC, 1..6
/* 8 */ 0x24, 0x25, 0x26, 0x27, 0x2D, 0x2E, 0x2A, 0x2B, // 7..0 - = BS TAB
/* 16 */ 0x14, 0x1A, 0x08, 0x15, 0x17, 0x1C, 0x18, 0x0C, // Q..I
/* 24 */ 0x12, 0x13, 0x2F, 0x30, 0x28, 0, 0x04, 0x16, // O P [ ] RET, A S
/* 32 */ 0x07, 0x09, 0x0A, 0x0B, 0x0D, 0x0E, 0x0F, 0x33, // D..L ;
/* 40 */ 0x34, 0x35, 0, 0x31, 0x1D, 0x1B, 0x06, 0x19, // ' ` \ Z X C V
/* 48 */ 0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0, 0x55, // B N M , . / KP*
/* 56 */ 0, 0x2C, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, // SPC CAPS F1..F5
/* 64 */ 0x3F, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5F, // F6..F10 NUM SCR KP7
/* 72 */ 0x60, 0x61, 0x56, 0x5C, 0x5D, 0x5E, 0x57, 0x59, // KP8 KP9 KP- KP4..6 KP+ KP1
/* 80 */ 0x5A, 0x5B, 0x62, 0x63, 0, 0, 0x64, 0x44, // KP2 KP3 KP0 KP. 102ND F11
/* 88 */ 0x45, 0, 0, 0, 0, 0, 0, 0, // F12
/* 96 */ 0x58, 0, 0x54, 0x46, 0, 0, 0x4A, 0x52, // KPRET KP/ PRTSC HOME UP
/* 104 */ 0x4B, 0x50, 0x4F, 0x4D, 0x51, 0x4E, 0x49, 0x4C, // PGUP LEFT RIGHT END DOWN PGDN INS DEL
/* 112 */ 0, 0, 0, 0, 0, 0, 0, 0x48, // PAUSE
/* 120 */ 0, 0, 0, 0, 0, 0, 0, 0,
};
static void dc_kbd_input(u16 code, bool pressed) {
u8 mod = 0;
switch (code) {
case KEY_LEFTCTRL: mod = 0x01; break;
case KEY_LEFTSHIFT: mod = 0x02; break;
case KEY_LEFTALT: mod = 0x04; break;
case KEY_LEFTMETA: mod = 0x08; break; // S1
case KEY_RIGHTCTRL: mod = 0x10; break;
case KEY_RIGHTSHIFT: mod = 0x20; break;
case KEY_RIGHTALT: mod = 0x40; break;
case KEY_RIGHTMETA: mod = 0x80; break; // S2
}
if (mod) {
if (pressed)
kb_shift |= mod;
else
kb_shift &= ~mod;
return;
}
u8 dc = code < 128 ? LINUX_TO_DC_KEY[code] : 0;
if (!dc)
return;
if (pressed) { // 6-key rollover, ignore re-press/autorepeat
for (int i = 0; i < 6; i++)
if (kb_key[i] == dc)
return;
for (int i = 0; i < 6; i++)
if (kb_key[i] == 0) {
kb_key[i] = dc;
return;
}
} else {
for (int i = 0; i < 6; i++)
if (kb_key[i] == dc) {
for (; i < 5; i++)
kb_key[i] = kb_key[i + 1];
kb_key[5] = 0;
return;
}
}
}
static void dc_mouse_input(u16 type, u16 code, s32 value) {
if (type == EV_REL) {
float sens = settings.input.MouseSensitivity / 100.0f;
if (code == REL_X)
mo_x_delta += value * sens;
else if (code == REL_Y)
mo_y_delta += value * sens;
else if (code == REL_WHEEL)
mo_wheel_delta -= value * 16; // wheel up = negative, as x11.cpp
} else if (type == EV_KEY) {
u32 mask = 0;
if (code == BTN_LEFT)
mask = 1 << 2;
else if (code == BTN_RIGHT)
mask = 1 << 1;
else if (code == BTN_MIDDLE)
mask = 1 << 3;
if (mask) {
if (value)
mo_buttons &= ~mask;
else
mo_buttons |= mask;
}
}
}
#define EVDEV_REL_GAIN 4.0f // mouse counts -> analog deflection
#define ABS_CODES 64 // ABS_MAX + 1
static int hid_shadow_open(const std::string& evpath);
struct EvdevPad {
int fd;
std::string path, id;
int port; // maple port 0..3 this device feeds
bool feedKb; // port carries a DC keyboard: feed kb_key/kb_shift
bool feedMouse; // port carries a DC mouse: feed mo_*
InMapping map[TGT_COUNT];
int absLo[ABS_CODES], absHi[ABS_CODES];
bool absValid[ABS_CODES];
bool ffRumble; // supports FF_RUMBLE, fd is open read-write
int ffEffect; // uploaded rumble effect id, -1 = none yet
bool held[TGT_COUNT]; // dpad_*/btn_* targets currently pressed
bool actPrev[2]; // TGT_BTN_EXIT/SCREENSHOT state last update
int analog[2]; // TGT_ANALOG_X/Y, -128..127
int trig[2]; // TGT_TRIG_L/R, 0..255
bool kpNeg[2], kpPos[2]; // keypair halves per analog axis
bool relDriven[2]; // analog axis fed by rel (mouse) motion
float relAccum[2]; // motion accumulator, decays in tick
bool synDropped; // SYN_DROPPED seen: skip to SYN_REPORT, then resync
int hidFd; // hidraw node of the same device (GET_REPORT), -1 = none
uint64_t lastEventNs; // last key/abs event read from evdev
uint64_t lastCheckedSample;// shadow sample seq already compared
};
static bool g_evdev_mode = false; // any [inputN] section in emu.cfg
static std::vector<EvdevPad> g_evdev_pads;
static std::string evdev_device_id(int fd) {
struct input_id id;
if (ioctl(fd, EVIOCGID, &id) < 0)
return "";
char buf[64];
snprintf(buf, sizeof(buf), "%04x:%04x:%04x:%04x",
id.bustype, id.vendor, id.product, id.version);
std::string s = buf;
char uniq[64] = {0};
if (ioctl(fd, EVIOCGUNIQ(sizeof(uniq) - 1), uniq) >= 0 && uniq[0]) {
s += ":";
s += uniq;
}
return s;
}
static int evdev_path_num(const std::string& path) {
int n = 0;
for (size_t i = 0; i < path.size(); i++)
if (path[i] >= '0' && path[i] <= '9')
n = n * 10 + (path[i] - '0');
return n;
}
static bool evdev_path_less(const std::string& a, const std::string& b) {
return evdev_path_num(a) < evdev_path_num(b);
}
static void evdev_init() {
// device id -> mappings, from [input0]..[inputN]
struct CfgPad { InMapping map[TGT_COUNT]; bool any; int port; };
std::map<std::string, CfgPad> cfgpads;
for (int n = 0; ; n++) {
char section[32];
snprintf(section, sizeof(section), "input%d", n);
if (cfgExists(section, "DeviceId") != 2)
break;
g_evdev_mode = true;
std::string devid = cfgLoadStr(section, "DeviceId", "");
if (devid.empty())
continue;
CfgPad pad;
pad.any = false;
pad.port = cfgLoadInt(section, "Port", 0);
if (pad.port < 0 || pad.port > 3)
pad.port = 0;
for (int t = 0; t < TGT_COUNT; t++) {
pad.map[t].kind = InMapping::NONE;
std::string val = cfgLoadStr(section, TARGET_CFG_KEYS[t], "");
if (!val.empty() && decode_mapping(val.c_str(), &pad.map[t]))
pad.any = true;
}
cfgpads[devid] = pad;
}
glob_t g;
if (glob("/dev/input/event*", 0, NULL, &g) != 0) {
printf("evdev: no /dev/input/event* devices\n");
return;
}
std::vector<std::string> paths(g.gl_pathv, g.gl_pathv + g.gl_pathc);
globfree(&g);
std::sort(paths.begin(), paths.end(), evdev_path_less);
std::map<std::string, int> seen;
for (size_t i = 0; i < paths.size(); i++) {
int fd = open(paths[i].c_str(), O_RDONLY | O_NONBLOCK);
if (fd < 0)
continue;
std::string id = evdev_device_id(fd);
if (id.empty()) {
close(fd);
continue;
}
int dup = seen[id]++;
if (dup) { // identical devices with no unique id
char suffix[16];
snprintf(suffix, sizeof(suffix), "#%d", dup + 1);
id += suffix;
}
// unmatched devices stay open in monitor-only mode: no mappings,
// but the hardcoded ESC exit still watches them
std::map<std::string, CfgPad>::iterator it = cfgpads.find(id);
bool mapped = it != cfgpads.end() && it->second.any;
// rumble (purupuru pack): mapped controllers advertising FF_RUMBLE are
// reopened read-write so effects can be uploaded and played
bool ffRumble = false;
if (mapped) {
unsigned long ffbits[(FF_MAX + 8 * sizeof(unsigned long)) /
(8 * sizeof(unsigned long))] = {0};
if (ioctl(fd, EVIOCGBIT(EV_FF, sizeof(ffbits)), ffbits) >= 0 &&
(ffbits[FF_RUMBLE / (8 * sizeof(unsigned long))] >>
(FF_RUMBLE % (8 * sizeof(unsigned long)))) & 1) {
int rw = open(paths[i].c_str(), O_RDWR | O_NONBLOCK);
if (rw >= 0) {
close(fd);
fd = rw;
ffRumble = true;
}
}
}
EvdevPad pad;
memset(&pad.absLo, 0, sizeof(pad.absLo));
memset(&pad.absHi, 0, sizeof(pad.absHi));
memset(&pad.absValid, 0, sizeof(pad.absValid));
memset(&pad.held, 0, sizeof(pad.held));
memset(&pad.analog, 0, sizeof(pad.analog));
memset(&pad.trig, 0, sizeof(pad.trig));
memset(&pad.kpNeg, 0, sizeof(pad.kpNeg));
memset(&pad.kpPos, 0, sizeof(pad.kpPos));
memset(&pad.relDriven, 0, sizeof(pad.relDriven));
memset(&pad.relAccum, 0, sizeof(pad.relAccum));
memset(&pad.actPrev, 0, sizeof(pad.actPrev));
pad.fd = fd;
pad.path = paths[i];
pad.id = id;
pad.port = 0;
pad.ffRumble = ffRumble;
pad.ffEffect = -1;
pad.feedKb = false;
pad.feedMouse = false;
pad.synDropped = false;
pad.hidFd = -1;
pad.lastEventNs = 0;
pad.lastCheckedSample = 0;
if (it != cfgpads.end()) {
// known device: if its port carries a maple keyboard/mouse
// (Peripherals page), its events feed that device's state
pad.port = it->second.port;
pad.feedKb = settings.input.maple_devices[pad.port & 3] == MDT_Keyboard;
pad.feedMouse = settings.input.maple_devices[pad.port & 3] == MDT_Mouse;
}
for (int t = 0; t < TGT_COUNT; t++)
pad.map[t].kind = InMapping::NONE;
if (mapped) {
pad.port = it->second.port;
memcpy(pad.map, it->second.map, sizeof(pad.map));
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = pad.map[t];
if (m.kind == InMapping::ABS && m.code >= 0 && m.code < ABS_CODES) {
struct input_absinfo ai;
if (ioctl(fd, EVIOCGABS(m.code), &ai) == 0) {
pad.absLo[m.code] = ai.minimum;
pad.absHi[m.code] = ai.maximum;
pad.absValid[m.code] = true;
}
}
if (t == TGT_ANALOG_X || t == TGT_ANALOG_Y)
pad.relDriven[t - TGT_ANALOG_X] = m.kind == InMapping::REL;
}
}
if (mapped)
pad.hidFd = hid_shadow_open(paths[i]);
// drain events queued before we started
struct input_event drain[16];
while (read(fd, drain, sizeof(drain)) > 0)
;
g_evdev_pads.push_back(pad);
if (pad.feedKb || pad.feedMouse)
printf("evdev: mapped %s [%s] -> port %c (DC %s)\n",
pad.path.c_str(), id.c_str(), 'A' + pad.port,
pad.feedKb ? "keyboard" : "mouse");
else if (mapped)
printf("evdev: mapped %s [%s] -> port %c%s\n",
pad.path.c_str(), id.c_str(), 'A' + pad.port,
ffRumble ? ", rumble" : "");
else
printf("evdev: monitoring %s [%s]\n", pad.path.c_str(), id.c_str());
}
}
static void evdev_feed(EvdevPad& p, u16 type, u16 code, s32 value) {
// maple keyboard/mouse ports consume the raw events; pad mappings are
// still processed below (harmless: a kb/mouse port has no controller)
if (p.feedKb && type == EV_KEY)
dc_kbd_input(code, value != 0);
if (p.feedMouse)
dc_mouse_input(type, code, value);
switch (type) {
case EV_KEY:
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = p.map[t];
if (m.kind == InMapping::KEY && m.code == (int)code) {
if (t == TGT_TRIG_L || t == TGT_TRIG_R)
p.trig[t - TGT_TRIG_L] = value ? 255 : 0;
else if (TARGET_BTN_BIT[t] || t == TGT_BTN_EXIT
|| t == TGT_BTN_SCREENSHOT)
p.held[t] = value != 0;
} else if (m.kind == InMapping::KEYPAIR &&
(t == TGT_ANALOG_X || t == TGT_ANALOG_Y)) {
int a = t - TGT_ANALOG_X;
if ((int)code == m.neg)
p.kpNeg[a] = value != 0;
else if ((int)code == m.pos)
p.kpPos[a] = value != 0;
else
continue;
p.analog[a] = p.kpNeg[a] ? -128 : (p.kpPos[a] ? 127 : 0);
}
}
break;
case EV_ABS:
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = p.map[t];
if (m.kind != InMapping::ABS || m.code != (int)code)
continue;
int lo = -32768, hi = 32767;
if (code < ABS_CODES && p.absValid[code]) {
lo = p.absLo[code];
hi = p.absHi[code];
}
if (hi <= lo)
continue;
bool is_analog = t == TGT_ANALOG_X || t == TGT_ANALOG_Y;
float norm = (value - lo) / (float)(hi - lo) * 2.0f - 1.0f;
if (m.dir < 0)
norm = -norm;
if (is_analog) {
int v = (int)lroundf(norm * 127);
p.analog[t - TGT_ANALOG_X] = std::max(-127, std::min(127, v));
} else if (t == TGT_TRIG_L || t == TGT_TRIG_R) {
int v = (int)lroundf((norm + 1) / 2 * 255);
p.trig[t - TGT_TRIG_L] = std::max(0, std::min(255, v));
} else {
p.held[t] = norm > 0.5f;
}
}
break;
case EV_REL:
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = p.map[t];
if (m.kind == InMapping::REL && m.code == (int)code &&
(t == TGT_ANALOG_X || t == TGT_ANALOG_Y))
p.relAccum[t - TGT_ANALOG_X] += value * m.dir * EVDEV_REL_GAIN;
}
break;
}
}
static void evdev_tick(EvdevPad& p) {
// mouse deflection decays back to center when motion stops
for (int a = 0; a < 2; a++) {
if (!p.relDriven[a])
continue;
float acc = p.relAccum[a];
p.analog[a] = std::max(-127, std::min(127, (int)acc));
p.relAccum[a] = fabsf(acc) >= 1.0f ? acc * 0.8f : 0.0f;
}
}
// ---- device-state shadow (lost USB reports) ------------------------------
// Full-speed sticks behind the DE10's high-speed hub use split transactions;
// under heavy DDR/CPU load the dwc2 host occasionally loses an interrupt IN
// report the hub already acknowledged. Sticks that only report on change
// (GP2040-CE) then leave a press or release missing until the next change:
// a menu keeps scrolling, a press is ignored. A helper thread re-reads the
// input report over the control pipe (HIDIOCGINPUT, retried by the hub) and
// evdev_update repairs mapped keys when the event stream has been quiet.
#include <linux/hidraw.h>
#include <atomic>
#include <dirent.h>
#ifndef HIDIOCGINPUT /* Linux 5.11+, newer than the toolchain headers */
#define HIDIOCGINPUT(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x0A, len)
#endif
static const int HID_SHADOW_MAX = 8;
struct HidShadow {
int fd = -1;
std::atomic<uint32_t> buttons{0}; // bit n = HID button n+1
std::atomic<uint64_t> sampleNs{0}; // when buttons was read
std::atomic<uint64_t> seq{0};
};
static HidShadow g_hid_shadow[HID_SHADOW_MAX];
static int g_hid_shadow_count = 0;
static std::atomic<bool> g_hid_thread_started{false};
static uint64_t mono_ns() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (uint64_t)ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}
// GP2040-CE "Generic" report: 32 one-bit buttons first, no report id
static const unsigned char GP2040_DESC_PREFIX[] = {
0x05, 0x01, 0x09, 0x05, 0xa1, 0x01, 0x05, 0x09, 0x19, 0x01, 0x29, 0x20,
0x15, 0x00, 0x25, 0x01, 0x95, 0x20, 0x75, 0x01, 0x81, 0x02 };
// hidraw node of the HID device behind /dev/input/eventN, if its report
// layout is the known 32-button one; returns a shadow slot or -1
static int hid_shadow_open(const std::string& evpath) {
if (g_hid_shadow_count >= HID_SHADOW_MAX)
return -1;
std::string ev = evpath.substr(evpath.rfind('/') + 1);
std::string dir = "/sys/class/input/" + ev + "/device/../../hidraw";
DIR* d = opendir(dir.c_str());
if (!d)
return -1;
std::string node;
while (struct dirent* e = readdir(d))
if (!strncmp(e->d_name, "hidraw", 6))
node = std::string("/dev/") + e->d_name;
closedir(d);
if (node.empty())
return -1;
int fd = open(node.c_str(), O_RDWR);
if (fd < 0)
return -1;
int dsz = 0;
struct hidraw_report_descriptor rd;
if (ioctl(fd, HIDIOCGRDESCSIZE, &dsz) < 0 || dsz < (int)sizeof(GP2040_DESC_PREFIX)) {
close(fd);
return -1;
}
rd.size = dsz;
if (ioctl(fd, HIDIOCGRDESC, &rd) < 0 ||
memcmp(rd.value, GP2040_DESC_PREFIX, sizeof(GP2040_DESC_PREFIX))) {
close(fd);
return -1;
}
int slot = g_hid_shadow_count++;
g_hid_shadow[slot].fd = fd;
printf("evdev: %s shadowed by %s (GET_REPORT resync)""\n", evpath.c_str(), node.c_str());
return slot;
}
static void* hid_shadow_thread(void*) {
for (;;) {
for (int i = 0; i < g_hid_shadow_count; i++) {
HidShadow& h = g_hid_shadow[i];
unsigned char buf[64];
memset(buf, 0, sizeof(buf));
uint64_t t = mono_ns();
int n = ioctl(h.fd, HIDIOCGINPUT(sizeof(buf)), buf);
if (n >= 5) { // [0] report id (0), [1..4] buttons
uint32_t b = buf[1] | (buf[2] << 8) | (buf[3] << 16) | ((uint32_t)buf[4] << 24);
h.buttons.store(b);
h.sampleNs.store(t);
h.seq.fetch_add(1);
}
}
usleep(50000);
}
}
// evdev code the kernel (hid-input, gamepad usage) gives HID button n (1-based)
static int hid_button_code(int n) {
return n <= 16 ? BTN_GAMEPAD + (n - 1) : BTN_TRIGGER_HAPPY + (n - 17);
}
// After SYN_DROPPED the kernel has thrown events away (the client buffer
// overflowed while the game wasn't polling, e.g. during menu loads), so the
// state built from the event stream can hold a press whose release was lost:
// a "latched" direction that keeps a menu scrolling by itself. Re-read the
// real state of every mapped key and axis.
static void evdev_resync(EvdevPad& p) {
unsigned char keys[KEY_MAX / 8 + 1];
memset(keys, 0, sizeof(keys));
if (ioctl(p.fd, EVIOCGKEY(sizeof(keys)), keys) >= 0) {
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = p.map[t];
int codes[2] = { -1, -1 };
if (m.kind == InMapping::KEY)
codes[0] = m.code;
else if (m.kind == InMapping::KEYPAIR) {
codes[0] = m.neg;
codes[1] = m.pos;
}
for (int c : codes)
if (c >= 0 && c <= KEY_MAX)
evdev_feed(p, EV_KEY, c, (keys[c / 8] >> (c % 8)) & 1);
}
}
for (int t = 0; t < TGT_COUNT; t++) {
const InMapping& m = p.map[t];
if (m.kind == InMapping::ABS && m.code >= 0 && m.code < ABS_CODES) {
struct input_absinfo ai;
if (ioctl(p.fd, EVIOCGABS(m.code), &ai) == 0)
evdev_feed(p, EV_ABS, m.code, ai.value);
}
}
}
static void evdev_read_pad(EvdevPad& p) {
if (p.fd < 0)
return;
struct input_event ev[64];
for (;;) {
ssize_t n = read(p.fd, ev, sizeof(ev));
if (n < (ssize_t)sizeof(ev[0])) {
if (n < 0 && (errno == EAGAIN || errno == EINTR))
break;
printf("evdev: lost %s [%s]\n", p.path.c_str(), p.id.c_str());
close(p.fd);
p.fd = -1;
break;
}
for (ssize_t e = 0; e < n / (ssize_t)sizeof(ev[0]); e++) {
if (ev[e].type == EV_SYN && ev[e].code == SYN_DROPPED) {
if (!p.synDropped)
printf("evdev: events dropped on %s, resyncing\n", p.path.c_str());
p.synDropped = true;
continue;
}
if (p.synDropped) {
if (ev[e].type == EV_SYN && ev[e].code == SYN_REPORT) {
p.synDropped = false;
evdev_resync(p);
}
continue;
}
if (ev[e].type == EV_KEY && ev[e].code == KEY_ESC && ev[e].value == 1) {
printf("evdev: ESC pressed on %s, exiting\n", p.path.c_str());