swdc: first segatools added

swdcio/dllmain.c

@@ -0,0 +1,112 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "swdcio/backend.h"
+#include "swdcio/config.h"
+#include "swdcio/di.h"
+#include "swdcio/swdcio.h"
+#include "swdcio/xi.h"
+
+#include "util/dprintf.h"
+#include "util/str.h"
+
+static struct swdc_io_config swdc_io_cfg;
+static const struct swdc_io_backend *swdc_io_backend;
+static bool swdc_io_coin;
+
+uint16_t swdc_io_get_api_version(void)
+{
+    return 0x0100;
+}
+
+HRESULT swdc_io_init(void)
+{
+    HINSTANCE inst;
+    HRESULT hr;
+
+    assert(swdc_io_backend == NULL);
+
+    inst = GetModuleHandleW(NULL);
+
+    if (inst == NULL) {
+        hr = HRESULT_FROM_WIN32(GetLastError());
+        dprintf("GetModuleHandleW failed: %lx\n", hr);
+
+        return hr;
+    }
+
+    swdc_io_config_load(&swdc_io_cfg, L".\\segatools.ini");
+
+    if (wstr_ieq(swdc_io_cfg.mode, L"dinput")) {
+        hr = swdc_di_init(&swdc_io_cfg.di, inst, &swdc_io_backend);
+    } else if (wstr_ieq(swdc_io_cfg.mode, L"xinput")) {
+        hr = swdc_xi_init(&swdc_io_cfg.xi, &swdc_io_backend);
+    } else {
+        hr = E_INVALIDARG;
+        dprintf("swdc IO: Invalid IO mode \"%S\", use dinput or xinput\n",
+                swdc_io_cfg.mode);
+    }
+
+    return hr;
+}
+
+void swdc_io_get_opbtns(uint8_t *opbtn_out)
+{
+    uint8_t opbtn;
+
+    assert(swdc_io_backend != NULL);
+    assert(opbtn_out != NULL);
+
+    opbtn = 0;
+
+    if (GetAsyncKeyState(swdc_io_cfg.vk_test) & 0x8000) {
+        opbtn |= SWDC_IO_OPBTN_TEST;
+    }
+
+    if (GetAsyncKeyState(swdc_io_cfg.vk_service) & 0x8000) {
+        opbtn |= SWDC_IO_OPBTN_SERVICE;
+    }
+
+    if (GetAsyncKeyState(swdc_io_cfg.vk_coin) & 0x8000) {
+        if (!swdc_io_coin) {
+            swdc_io_coin = true;
+            opbtn |= SWDC_IO_OPBTN_COIN;
+        }
+    } else {
+        swdc_io_coin = false;
+    }
+
+    *opbtn_out = opbtn;
+}
+
+
+void swdc_io_get_gamebtns(uint16_t *gamebtn_out)
+{
+    assert(swdc_io_backend != NULL);
+    assert(gamebtn_out != NULL);
+
+    swdc_io_backend->get_gamebtns(gamebtn_out);
+}
+
+void swdc_io_get_analogs(struct swdc_io_analog_state *out)
+{
+    struct swdc_io_analog_state tmp;
+
+    assert(out != NULL);
+    assert(swdc_io_backend != NULL);
+
+    swdc_io_backend->get_analogs(&tmp);
+
+    /* Apply steering wheel restriction. Real cabs only report about 77% of
+       the IO-3's max ADC output value when the wheel is turned to either of
+       its maximum positions. To match this behavior we set the default value
+       for the wheel restriction config parameter to 97 (out of 128). This
+       scaling factor is applied using fixed-point arithmetic below. */
+
+    out->wheel = (tmp.wheel * swdc_io_cfg.restrict_) / 128;
+    out->accel = tmp.accel;
+    out->brake = tmp.brake;
+}