segatools/mercuryhook/touch.c

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#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"
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#include "hooklib/fdshark.h"
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#include "util/dprintf.h"
#include "util/dump.h"
static HRESULT touch_handle_irp(struct irp *irp);
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static HRESULT touch0_handle_irp_locked(struct irp *irp);
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static HRESULT touch1_handle_irp_locked(struct irp *irp);
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static HRESULT touch_req_dispatch(const struct touch_req *req);
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static HRESULT touch_frame_decode(struct touch_req *dest, struct iobuf *iobuf, int side);
static uint8_t calc_checksum(const void *ptr, size_t nbytes);
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static HRESULT touch_handle_get_sync_board_ver(const struct touch_req *req);
static HRESULT touch_handle_startup(const struct touch_req *req);
static HRESULT touch_handle_get_unit_board_ver(const struct touch_req *req);
static HRESULT touch_handle_mystery1(const struct touch_req *req);
static HRESULT touch_handle_mystery2(const struct touch_req *req);
static HRESULT touch_handle_start_auto_scan(const struct touch_req *req);
static void touch_res_auto_scan(const bool *state);
uint8_t input_frame_count_0 = 0x7b;
uint8_t input_frame_count_1 = 0x7b;
bool touch0_auto = false;
bool touch1_auto = false;
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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)
{
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assert(cfg != NULL);
assert(mercury_dll.touch_init != NULL);
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if (!cfg->enable) {
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return S_FALSE;
}
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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(touch_handle_irp);
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}
static HRESULT touch_handle_irp(struct irp *irp)
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{
HRESULT hr;
assert(irp != NULL);
if (uart_match_irp(&touch0_uart, irp)) {
EnterCriticalSection(&touch0_lock);
hr = touch0_handle_irp_locked(irp);
LeaveCriticalSection(&touch0_lock);
}
else if (uart_match_irp(&touch1_uart, irp)) {
EnterCriticalSection(&touch1_lock);
hr = touch1_handle_irp_locked(irp);
LeaveCriticalSection(&touch1_lock);
}
else {
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return iohook_invoke_next(irp);
}
return hr;
}
static HRESULT touch0_handle_irp_locked(struct irp *irp)
{
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struct touch_req req;
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HRESULT hr;
if (irp->op == IRP_OP_OPEN) {
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dprintf("Wacca touch0: Starting backend\n");
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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
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dprintf("TX0 Buffer:\n");
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dump_iobuf(&touch0_uart.written);
#endif
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hr = touch_frame_decode(&req, &touch0_uart.written, 0);
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if (hr != S_OK) {
if (FAILED(hr)) {
dprintf("Wacca touch: Deframe error: %x\n", (int) hr);
}
return hr;
}
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hr = touch_req_dispatch(&req);
if (FAILED(hr)) {
dprintf("Wacca touch: Processing error: %x\n", (int) hr);
}
return hr;
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}
}
static HRESULT touch1_handle_irp_locked(struct irp *irp)
{
struct touch_req req;
HRESULT hr;
if (irp->op == IRP_OP_OPEN) {
dprintf("Wacca touch1: 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(&touch1_uart, irp);
if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
return hr;
}
for (;;) {
#if 0
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dprintf("TX1 Buffer:\n");
dump_iobuf(&touch1_uart.written);
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#endif
hr = touch_frame_decode(&req, &touch1_uart.written, 1);
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if (hr != S_OK) {
if (FAILED(hr)) {
dprintf("Wacca touch: Deframe error: %x\n", (int) hr);
}
return hr;
}
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hr = touch_req_dispatch(&req);
if (FAILED(hr)) {
dprintf("Wacca touch: Processing error: %x\n", (int) hr);
}
return hr;
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}
}
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static HRESULT touch_req_dispatch(const struct touch_req *req)
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{
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switch (req->cmd) {
case CMD_GET_SYNC_BOARD_VER:
return touch_handle_get_sync_board_ver(req);
case CMD_STARTUP:
return touch_handle_startup(req);
case CMD_GET_UNIT_BOARD_VER:
return touch_handle_get_unit_board_ver(req);
case CMD_MYSTERY1:
return touch_handle_mystery1(req);
case CMD_MYSTERY2:
return touch_handle_mystery2(req);
case CMD_START_AUTO_SCAN:
return touch_handle_start_auto_scan(req);
case CMD_BEGIN_WRITE:
dprintf("Wacca touch: Begin write for side %d\n", req->side);
return S_OK;
case CMD_NEXT_WRITE:
dprintf("Wacca touch: continue write for side %d\n", req->side);
return S_OK;
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default:
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dprintf("Wacca touch: Unhandled command %02x\n", req->cmd);
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return S_OK;
}
}
static HRESULT touch_handle_get_sync_board_ver(const struct touch_req *req)
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{
struct touch_resp_get_sync_board_ver resp;
HRESULT hr;
uint8_t sync_board_ver[6] = { 0x31, 0x39, 0x30, 0x35, 0x32, 0x33 };
dprintf("Wacca Touch%d: Get sync board version\n", req->side);
resp.cmd = 0xa0;
// TODO: Why does strcpy_s here give a runtime warning and not work????
//strcpy_s(resp.version, sizeof(resp.version), "190523");
memcpy(resp.version, sync_board_ver, sizeof(sync_board_ver));
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
if (req->side == 0) {
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
}
else {
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
}
return hr;
}
/* TODO: Very ugly please make better before upstreaming */
static HRESULT touch_handle_startup(const struct touch_req *req)
{
struct touch_resp_startup resp;
HRESULT hr;
uint8_t *rev;
dprintf("Wacca Touch%d: Startup %2hx\n", req->side, req->data[2]);
switch (req->data[2]) {
case 0x30:
rev = (uint8_t[80]) { 0x20, 0x20, 0x20, 0x20, 0x30, 0x20, 0x20, 0x20, 0x20, 0x30, 0x20,
0x20, 0x20, 0x20, 0x31, 0x20, 0x20, 0x20, 0x20, 0x32, 0x20, 0x20, 0x20, 0x20,
0x33, 0x20, 0x20, 0x20, 0x20, 0x34, 0x20, 0x20, 0x20, 0x20, 0x35, 0x20, 0x20,
0x20, 0x31, 0x35, 0x20, 0x20, 0x20, 0x31, 0x35, 0x20, 0x20, 0x20, 0x31, 0x35,
0x20, 0x20, 0x20, 0x31, 0x35, 0x20, 0x20, 0x20, 0x31, 0x35, 0x20, 0x20, 0x20,
0x31, 0x35, 0x20, 0x20, 0x20, 0x31, 0x31, 0x20, 0x20, 0x20, 0x31, 0x31, 0x20,
0x20, 0x20, 0x31, 0x31 };
break;
case 0x31:
rev = (uint8_t[80]) { 0x20, 0x20, 0x20, 0x31, 0x31, 0x20, 0x20, 0x20, 0x31, 0x31, 0x20,
0x20, 0x20, 0x31, 0x31, 0x20, 0x20, 0x31, 0x32, 0x38, 0x20, 0x20, 0x31, 0x30,
0x33, 0x20, 0x20, 0x31, 0x30, 0x33, 0x20, 0x20, 0x31, 0x31, 0x35, 0x20, 0x20,
0x31, 0x33, 0x38, 0x20, 0x20, 0x31, 0x32, 0x37, 0x20, 0x20, 0x31, 0x30, 0x33,
0x20, 0x20, 0x31, 0x30, 0x35, 0x20, 0x20, 0x31, 0x31, 0x31, 0x20, 0x20, 0x31,
0x32, 0x36, 0x20, 0x20, 0x31, 0x31, 0x33, 0x20, 0x20, 0x20, 0x39, 0x35, 0x20,
0x20, 0x31, 0x30, 0x30 };
break;
case 0x33:
rev = (uint8_t[80]) { 0x20, 0x20, 0x31, 0x30, 0x31, 0x20, 0x20, 0x31, 0x31, 0x35, 0x20,
0x20, 0x20, 0x39, 0x38, 0x20, 0x20, 0x20, 0x38, 0x36, 0x20, 0x20, 0x20, 0x37,
0x36, 0x20, 0x20, 0x20, 0x36, 0x37, 0x20, 0x20, 0x20, 0x36, 0x38, 0x20, 0x20,
0x20, 0x34, 0x38, 0x20, 0x20, 0x31, 0x31, 0x37, 0x20, 0x20, 0x20, 0x20, 0x30,
0x20, 0x20, 0x20, 0x38, 0x32, 0x20, 0x20, 0x31, 0x35, 0x34, 0x20, 0x20, 0x20,
0x20, 0x30, 0x20, 0x20, 0x20, 0x20, 0x36, 0x20, 0x20, 0x20, 0x33, 0x35, 0x20,
0x20, 0x20, 0x20, 0x34 };
break;
default:
dprintf("Wacca touch: BAD STARTUP REQUEST %2hx\n", req->data[2]);
return 1;
}
memcpy(resp.data, rev, 80 * sizeof(uint8_t));
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
if (req->side == 0) {
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
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}
else {
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
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}
return hr;
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}
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static HRESULT touch_handle_get_unit_board_ver(const struct touch_req *req)
{
struct touch_resp_get_unit_board_ver resp;
HRESULT hr;
uint8_t unit_board_ver[43] = { 0x31, 0x39, 0x30, 0x35, 0x32, 0x33, 0x52, 0x31,
0x39, 0x30, 0x35, 0x31, 0x34, 0x31, 0x39, 0x30, 0x35, 0x31, 0x34, 0x31,
0x39, 0x30, 0x35, 0x31, 0x34, 0x31, 0x39, 0x30, 0x35, 0x31, 0x34, 0x31,
0x39, 0x30, 0x35, 0x31, 0x34, 0x31, 0x39, 0x30, 0x35, 0x31, 0x34 };
dprintf("Wacca Touch%d: get unit board version\n", req->side);
resp.cmd = 0xa8;
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if (req->side == 0) {
memcpy(resp.version, unit_board_ver, sizeof(unit_board_ver));
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
}
else {
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unit_board_ver[6] = 0x4c;
memcpy(resp.version, unit_board_ver, sizeof(unit_board_ver));
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
}
return hr;
}
static HRESULT touch_handle_mystery1(const struct touch_req *req)
{
struct touch_resp_mystery1 resp;
HRESULT hr;
dprintf("Wacca Touch%d: mystery command 1\n", req->side);
resp.cmd = 0xa2;
resp.data = 0x3f;
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
if (req->side == 0) {
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
}
else {
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
}
return hr;
}
static HRESULT touch_handle_mystery2(const struct touch_req *req)
{
struct touch_resp_mystery2 resp;
HRESULT hr;
dprintf("Wacca Touch%d: mystery command 2\n", req->side);
resp.cmd = 0x94;
resp.data = 0;
resp.checksum = 0;
resp.checksum = calc_checksum(&resp, sizeof(resp));
if (req->side == 0) {
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
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}
else {
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
}
return hr;
}
static HRESULT touch_handle_start_auto_scan(const struct touch_req *req)
{
struct touch_resp_start_auto resp;
HRESULT hr;
uint8_t data1[24] = { 0 };
uint8_t data2[9] = { 0x0d, 0x03, 0x02, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00 };
dprintf("Wacca Touch%d: Start Auto\n", req->side);
resp.cmd = 0x9c;
resp.data = 0;
resp.checksum = 0x49;
resp.frame.cmd= 0x81;
memcpy(resp.frame.data1, data1, sizeof(data1));
memcpy(resp.frame.data2, data2, sizeof(data2));
resp.frame.checksum = 0;
resp.frame.checksum = calc_checksum(&resp.frame, sizeof(resp.frame));
if (req->side == 0) {
resp.frame.count = input_frame_count_0++;
hr = iobuf_write(&touch0_uart.readable, &resp, sizeof(resp));
touch0_auto = true;
}
else {
resp.frame.count = input_frame_count_1++;
hr = iobuf_write(&touch1_uart.readable, &resp, sizeof(resp));
touch1_auto = true;
}
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mercury_dll.touch_start(touch_res_auto_scan);
return hr;
}
static void touch_res_auto_scan(const bool *state)
{
struct touch_input_frame frame0;
//struct touch_input_frame frame1;
uint8_t data[24] = { 0 };
uint8_t data2[9] = { 0x0d, 0x03, 0x02, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00 };
frame0.cmd = 0x81;
frame0.count = input_frame_count_0++;
input_frame_count_0 %= 0x7f;
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memcpy(frame0.data1, data, sizeof(data));
memcpy(frame0.data2, data2, sizeof(data2));
frame0.checksum = 0;
frame0.checksum = calc_checksum(&frame0, sizeof(frame0));
if (touch0_auto) {
//dprintf("Wacca touch: Touch0 auto frame #%2hx sent\n", frame0.count);
EnterCriticalSection(&touch0_lock);
iobuf_write(&touch0_uart.readable, &frame0, sizeof(frame0));
LeaveCriticalSection(&touch0_lock);
}
if (touch1_auto) {
//dprintf("Wacca touch: Touch1 auto frame #%2hx sent\n", frame0.count);
EnterCriticalSection(&touch1_lock);
iobuf_write(&touch1_uart.readable, &frame0, sizeof(frame0));
LeaveCriticalSection(&touch1_lock);
}
}
/* Decodes the response into a struct that's easier to work with. */
static HRESULT touch_frame_decode(struct touch_req *dest, struct iobuf *iobuf, int side)
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{
dest->side = side;
dest->cmd = iobuf->bytes[0];
iobuf->pos--;
dest->data_length = iobuf->pos;
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if (dest->data_length > 0) {
for (int i = 1; i < dest->data_length; i++) {
dest->data[i-1] = iobuf->bytes[i];
}
}
iobuf->pos -= dest->data_length;
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return S_OK;
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}
/* The last byte of every response is a checksum.
* This checksum is calculated by bitwise XORing
* every byte in the response, then dropping the MSB.
* Thanks the CrazyRedMachine for figuring that out!!
*/
static uint8_t calc_checksum(const void *ptr, size_t nbytes)
{
const uint8_t *src;
uint8_t checksum = 0;
src = ptr;
for (size_t i = 0; i < nbytes; i++) {
//dprintf("Wacca touch: Calculating %2hx\n", src[i]);
checksum = checksum^(src[i]);
}
//dprintf("Wacca touch: Checksum is %2hx\n", checksum&0x7f);
return checksum&0x7f;
}