segatools/mercuryhook/touch.c

165 lines
4.0 KiB
C

#include <windows.h>
#include <assert.h>
#include <process.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "board/slider-cmd.h"
#include "board/slider-frame.h"
#include "mercuryhook/mercury-dll.h"
#include "mercuryhook/touch.h"
#include "hook/iobuf.h"
#include "hook/iohook.h"
#include "hooklib/uart.h"
#include "util/dprintf.h"
#include "util/dump.h"
static HRESULT touch0_handle_irp(struct irp *irp);
static HRESULT touch0_handle_irp_locked(struct irp *irp);
static HRESULT touch_req_dispatch(const union slider_req_any *req);
static void touch_res_auto_scan(const uint8_t *state);
static CRITICAL_SECTION touch0_lock;
static struct uart touch0_uart;
static uint8_t touch0_written_bytes[520];
static uint8_t touch0_readable_bytes[520];
static CRITICAL_SECTION touch1_lock;
static struct uart touch1_uart;
static uint8_t touch1_written_bytes[520];
static uint8_t touch1_readable_bytes[520];
HRESULT touch_hook_init(const struct touch_config *cfg)
{
assert(cfg != NULL);
assert(mercury_dll.touch_init != NULL);
// not sure why this always returns false...
/*if (!cfg->enable) {
return S_FALSE;
}*/
InitializeCriticalSection(&touch0_lock);
InitializeCriticalSection(&touch1_lock);
dprintf("Wacca touch: init\n");
uart_init(&touch0_uart, 3);
touch0_uart.written.bytes = touch0_written_bytes;
touch0_uart.written.nbytes = sizeof(touch0_written_bytes);
touch0_uart.readable.bytes = touch0_readable_bytes;
touch0_uart.readable.nbytes = sizeof(touch0_readable_bytes);
uart_init(&touch1_uart, 4);
touch1_uart.written.bytes = touch1_written_bytes;
touch1_uart.written.nbytes = sizeof(touch1_written_bytes);
touch1_uart.readable.bytes = touch1_readable_bytes;
touch1_uart.readable.nbytes = sizeof(touch1_readable_bytes);
return iohook_push_handler(touch0_handle_irp);
}
static HRESULT touch0_handle_irp(struct irp *irp)
{
HRESULT hr;
assert(irp != NULL);
if (!uart_match_irp(&touch0_uart, irp)) {
return iohook_invoke_next(irp);
}
EnterCriticalSection(&touch0_lock);
hr = touch0_handle_irp_locked(irp);
LeaveCriticalSection(&touch0_lock);
return hr;
}
static HRESULT touch0_handle_irp_locked(struct irp *irp)
{
union slider_req_any req;
struct iobuf req_iobuf;
HRESULT hr;
if (irp->op == IRP_OP_OPEN) {
dprintf("Wacca touch: Starting backend\n");
hr = mercury_dll.touch_init();
if (FAILED(hr)) {
dprintf("Wacca touch: Backend error: %x\n", (int) hr);
return hr;
}
}
hr = uart_handle_irp(&touch0_uart, irp);
if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
return hr;
}
for (;;) {
#if 0
dprintf("TX Buffer:\n");
dump_iobuf(&touch0_uart.written);
#endif
req_iobuf.bytes = req.bytes;
req_iobuf.nbytes = sizeof(req.bytes);
req_iobuf.pos = 0;
hr = slider_frame_decode(&req_iobuf, &touch0_uart.written);
if (hr != S_OK) {
if (FAILED(hr)) {
dprintf("Wacca touch: Deframe error: %x\n", (int) hr);
}
return hr;
}
#if 0
dprintf("Deframe Buffer:\n");
dump_iobuf(&req_iobuf);
#endif
hr = touch_req_dispatch(&req);
if (FAILED(hr)) {
dprintf("Wacca touch: Processing error: %x\n", (int) hr);
}
}
}
static HRESULT touch_req_dispatch(const union slider_req_any *req)
{
switch (req->hdr.cmd) {
default:
dprintf("Unhandled command %02x\n", req->hdr.cmd);
return S_OK;
}
}
static void slider_res_auto_scan(const uint8_t *state)
{
struct slider_resp_auto_scan resp;
resp.hdr.sync = SLIDER_FRAME_SYNC;
resp.hdr.cmd = SLIDER_CMD_AUTO_SCAN;
resp.hdr.nbytes = sizeof(resp.pressure);
memcpy(resp.pressure, state, sizeof(resp.pressure));
EnterCriticalSection(&touch0_lock);
slider_frame_encode(&touch0_uart.readable, &resp, sizeof(resp));
LeaveCriticalSection(&touch0_lock);
}