divaio: Break out Project Diva IO DLL

divaio/divaio.c

@@ -0,0 +1,124 @@
+#include <windows.h>
+
+#include <process.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "divaio/divaio.h"
+
+static unsigned int __stdcall diva_io_slider_thread_proc(void *ctx);
+
+static bool diva_io_coin;
+static uint16_t diva_io_coins;
+static HANDLE diva_io_slider_thread;
+static bool diva_io_slider_stop_flag;
+
+HRESULT diva_io_init(void)
+{
+    return S_OK;
+}
+
+void diva_io_jvs_poll(uint8_t *opbtn_out, uint8_t *gamebtn_out)
+{
+    static const int opbtn_vk[] = { '1', '2' };
+    static const int gamebtn_vk[] = { 'L', 'J', 'F', 'S', ' ' };
+
+    uint8_t opbtn;
+    uint8_t gamebtn;
+    size_t i;
+
+    opbtn = 0;
+    gamebtn = 0;
+
+    for (i = 0 ; i < _countof(opbtn_vk) ; i++) {
+        if (GetAsyncKeyState(opbtn_vk[i]) & 0x8000) {
+            opbtn |= 1 << i;
+        }
+    }
+
+    for (i = 0 ; i < _countof(gamebtn_vk) ; i++) {
+        if (GetAsyncKeyState(gamebtn_vk[i]) & 0x8000) {
+            gamebtn |= 1 << i;
+        }
+    }
+
+    *opbtn_out = opbtn;
+    *gamebtn_out = gamebtn;
+}
+
+uint16_t diva_io_jvs_read_coin_counter(void)
+{
+    if (GetAsyncKeyState('3')) {
+        if (!diva_io_coin) {
+            diva_io_coin = true;
+            diva_io_coins++;
+        }
+    } else {
+        diva_io_coin = false;
+    }
+
+    return diva_io_coins;
+}
+
+void diva_io_jvs_set_coin_blocker(bool open)
+{}
+
+void diva_io_slider_start(diva_io_slider_callback_t callback)
+{
+    if (diva_io_slider_thread != NULL) {
+        return;
+    }
+
+    diva_io_slider_thread = (HANDLE) _beginthreadex(
+            NULL,
+            0,
+            diva_io_slider_thread_proc,
+            callback,
+            0,
+            NULL);
+}
+
+void diva_io_slider_stop(void)
+{
+    diva_io_slider_stop_flag = true;
+
+    WaitForSingleObject(diva_io_slider_thread, INFINITE);
+    CloseHandle(diva_io_slider_thread);
+    diva_io_slider_thread = NULL;
+    diva_io_slider_stop_flag = false;
+}
+
+void diva_io_slider_set_leds(const uint8_t *rgb)
+{}
+
+static unsigned int __stdcall diva_io_slider_thread_proc(void *ctx)
+{
+    static const int keys[] = {
+        'Q', 'W', 'E', 'R', 'U', 'I', 'O', 'P',
+    };
+
+    diva_io_slider_callback_t callback;
+    uint8_t pressure_val;
+    uint8_t pressure[32];
+    size_t i;
+
+    callback = ctx;
+
+    while (!diva_io_slider_stop_flag) {
+        for (i = 0 ; i < 8 ; i++) {
+            if(GetAsyncKeyState(keys[i]) & 0x8000) {
+                pressure_val = 20;
+            } else {
+                pressure_val = 0;
+            }
+
+            memset(&pressure[28 - 4 * i], pressure_val, 4);
+        }
+
+        callback(pressure);
+        Sleep(1);
+    }
+
+    return 0;
+}