chunihook/slider.c: Add Chunithm slider emulation

chunihook/meson.build

@@ -18,5 +18,7 @@ shared_library(
     sources : [
         'jvs.c',
         'jvs.h',
+        'slider.c',
+        'slider.h',
     ],
 )

chunihook/slider.c

@@ -0,0 +1,269 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <process.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "util/dprintf.h"
+#include "util/dump.h"
+
+#include "board/slider-cmd.h"
+#include "board/slider-frame.h"
+
+#include "hook/iobuf.h"
+#include "hook/iohook.h"
+
+#include "hooklib/uart.h"
+
+static HRESULT slider_handle_irp(struct irp *irp);
+static HRESULT slider_handle_irp_locked(struct irp *irp);
+
+static HRESULT slider_req_dispatch(const union slider_req_any *req);
+static HRESULT slider_req_reset(void);
+static HRESULT slider_req_get_board_info(void);
+static HRESULT slider_req_auto_scan_start(void);
+static HRESULT slider_req_auto_scan_stop(void);
+static HRESULT slider_req_set_led(const struct slider_req_set_led *req);
+
+static unsigned int __stdcall slider_thread_proc(void *ctx);
+
+static CRITICAL_SECTION slider_lock;
+static struct uart slider_uart;
+static uint8_t slider_written_bytes[520];
+static uint8_t slider_readable_bytes[520];
+
+static HANDLE slider_thread;
+static bool slider_stop;
+
+void slider_hook_init(void)
+{
+    InitializeCriticalSection(&slider_lock);
+
+    uart_init(&slider_uart, 1);
+    slider_uart.written.bytes = slider_written_bytes;
+    slider_uart.written.nbytes = sizeof(slider_written_bytes);
+    slider_uart.readable.bytes = slider_readable_bytes;
+    slider_uart.readable.nbytes = sizeof(slider_readable_bytes);
+
+    iohook_push_handler(slider_handle_irp);
+}
+
+static HRESULT slider_handle_irp(struct irp *irp)
+{
+    HRESULT hr;
+
+    assert(irp != NULL);
+
+    if (!uart_match_irp(&slider_uart, irp)) {
+        return iohook_invoke_next(irp);
+    }
+
+    EnterCriticalSection(&slider_lock);
+    hr = slider_handle_irp_locked(irp);
+    LeaveCriticalSection(&slider_lock);
+
+    return hr;
+}
+
+static HRESULT slider_handle_irp_locked(struct irp *irp)
+{
+    union slider_req_any req;
+    struct iobuf req_iobuf;
+    HRESULT hr;
+
+    hr = uart_handle_irp(&slider_uart, irp);
+
+    if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
+        return hr;
+    }
+
+    for (;;) {
+#if 0
+        dprintf("TX Buffer:\n");
+        dump_iobuf(&slider_uart.written);
+#endif
+
+        req_iobuf.bytes = req.bytes;
+        req_iobuf.nbytes = sizeof(req.bytes);
+        req_iobuf.pos = 0;
+
+        hr = slider_frame_decode(&req_iobuf, &slider_uart.written);
+
+        if (hr != S_OK) {
+            if (FAILED(hr)) {
+                dprintf("Chunithm slider: Deframe error: %x\n", (int) hr);
+            }
+
+            return hr;
+        }
+
+#if 0
+        dprintf("Deframe Buffer:\n");
+        dump_iobuf(&req_iobuf);
+#endif
+
+        hr = slider_req_dispatch(&req);
+
+        if (FAILED(hr)) {
+            dprintf("Chunithm slider: Processing error: %x\n", (int) hr);
+        }
+    }
+}
+
+static HRESULT slider_req_dispatch(const union slider_req_any *req)
+{
+    switch (req->hdr.cmd) {
+    case SLIDER_CMD_RESET:
+        return slider_req_reset();
+
+    case SLIDER_CMD_GET_BOARD_INFO:
+        return slider_req_get_board_info();
+
+    case SLIDER_CMD_SET_LED:
+        return slider_req_set_led(&req->set_led);
+
+    case SLIDER_CMD_AUTO_SCAN_START:
+        return slider_req_auto_scan_start();
+
+    case SLIDER_CMD_AUTO_SCAN_STOP:
+        return slider_req_auto_scan_stop();
+
+    default:
+        dprintf("Unhandled command %02x\n", req->hdr.cmd);
+
+        return S_OK;
+    }
+}
+
+static HRESULT slider_req_reset(void)
+{
+    struct slider_hdr resp;
+
+    dprintf("Chunithm slider: Reset\n");
+
+    resp.sync = 0xFF;
+    resp.cmd = SLIDER_CMD_RESET;
+    resp.nbytes = 0;
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_get_board_info(void)
+{
+    struct slider_resp_get_board_info resp;
+
+    dprintf("Chunithm slider: Get firmware version\n");
+
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = SLIDER_FRAME_SYNC;
+    resp.hdr.cmd = SLIDER_CMD_GET_BOARD_INFO;
+    resp.hdr.nbytes = sizeof(resp.version);
+
+    strcpy_s(
+            resp.version,
+            sizeof(resp.version),
+            "15330   \xA0" "06712\xFF" "\x90");
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_auto_scan_start(void)
+{
+    dprintf("Chunithm slider: Start slider thread\n");
+
+    if (slider_thread != NULL) {
+        dprintf("Thread is already running\n");
+
+        return S_OK;
+    }
+
+    slider_thread = (HANDLE) _beginthreadex(
+            NULL,
+            0,
+            slider_thread_proc,
+            NULL,
+            0,
+            NULL);
+
+    if (slider_thread == NULL) {
+        dprintf("Thread launch failed\n");
+    }
+
+    /* This message is not acknowledged */
+
+    return S_OK;
+}
+
+static HRESULT slider_req_auto_scan_stop(void)
+{
+    struct slider_hdr resp;
+
+    dprintf("Chunithm slider: Stop slider thread\n");
+
+    if (slider_thread != NULL) {
+        slider_stop = true;
+        LeaveCriticalSection(&slider_lock);
+
+        WaitForSingleObject(slider_thread, INFINITE);
+        CloseHandle(slider_thread);
+        slider_thread = NULL;
+        slider_stop = false;
+
+        dprintf("Chunithm slider: Thread has terminated\n");
+
+        EnterCriticalSection(&slider_lock);
+    }
+
+    resp.sync = SLIDER_FRAME_SYNC;
+    resp.cmd = SLIDER_CMD_AUTO_SCAN_STOP;
+    resp.nbytes = 0;
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_set_led(const struct slider_req_set_led *req)
+{
+    /* This message is not acknowledged */
+    return S_OK;
+}
+
+static unsigned int WINAPI slider_thread_proc(void *ctx)
+{
+    static const int keys[] = {
+        'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L',
+    };
+
+    struct slider_resp_auto_scan resp;
+    uint8_t pressure;
+    bool stop;
+    size_t i;
+
+    for (;;) {
+        resp.hdr.sync = SLIDER_FRAME_SYNC;
+        resp.hdr.cmd = SLIDER_CMD_AUTO_SCAN;
+        resp.hdr.nbytes = sizeof(resp.pressure);
+
+        for (i = 0 ; i < 8 ; i++) {
+            pressure = GetAsyncKeyState(keys[i]) ? 20 : 0;
+            memset(&resp.pressure[28 - 4 * i], pressure, 4);
+        }
+
+        EnterCriticalSection(&slider_lock);
+
+        stop = slider_stop;
+
+        if (!stop) {
+            slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+        }
+
+        LeaveCriticalSection(&slider_lock);
+
+        if (stop) {
+            return 0;
+        }
+
+        Sleep(1);
+    }
+}

chunihook/slider.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void slider_hook_init(void);