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segatools/chuniio/chu2to3.c

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#include <windows.h>
#include <process.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "chuniio/chu2to3.h"
#include "util/dprintf.h"
// Check windows
#if _WIN32 || _WIN64
#if _WIN64
#define ENV64BIT
#else
#define ENV32BIT
#endif
#endif
// Check GCC
#if __GNUC__
#if __x86_64__ || __ppc64__
#define ENV64BIT
#else
#define ENV32BIT
#endif
#endif
/* chuniio.dll dynamic loading */
HMODULE hinstLib;
typedef uint16_t (*chuni_io_get_api_version_t)(void);
typedef HRESULT (*chuni_io_jvs_init_t)(void);
typedef void (*chuni_io_jvs_poll_t)(uint8_t*, uint8_t*);
typedef void (*chuni_io_jvs_read_coin_counter_t)(uint16_t *);
typedef HRESULT (*chuni_io_slider_init_t)(void);
typedef void (*chuni_io_slider_set_leds_t)(const uint8_t *);
typedef void (*chuni_io_slider_start_t)(chuni_io_slider_callback_t);
typedef void (*chuni_io_slider_stop_t)(void);
typedef HRESULT (*chuni_io_led_init_t)(void);
typedef void (*chuni_io_led_set_colors_t)(uint8_t, uint8_t *);
chuni_io_get_api_version_t _chuni_io_get_api_version;
chuni_io_jvs_init_t _chuni_io_jvs_init;
chuni_io_jvs_poll_t _chuni_io_jvs_poll;
chuni_io_jvs_read_coin_counter_t _chuni_io_jvs_read_coin_counter;
chuni_io_slider_init_t _chuni_io_slider_init;
chuni_io_slider_set_leds_t _chuni_io_slider_set_leds;
chuni_io_slider_start_t _chuni_io_slider_start;
chuni_io_slider_stop_t _chuni_io_slider_stop;
chuni_io_led_init_t _chuni_io_led_init;
chuni_io_led_set_colors_t _chuni_io_led_set_colors;
/* SHMEM Handling */
#define BUF_SIZE 1024
#define SHMEM_WRITE(buf, size) CopyMemory((PVOID)g_pBuf, buf, size)
#define SHMEM_READ(buf, size) CopyMemory(buf,(PVOID)g_pBuf, size)
TCHAR g_shmem_name[]=TEXT("Local\\Chu2to3Shmem");
HANDLE g_hMapFile;
LPVOID g_pBuf;
#pragma pack(1)
typedef struct shared_data_s {
uint16_t coin_counter;
uint8_t opbtn;
uint8_t beams;
uint16_t version;
} shared_data_t;
shared_data_t g_shared_data;
bool shmem_create()
{
g_hMapFile = CreateFileMapping(
INVALID_HANDLE_VALUE, // use paging file
NULL, // default security
PAGE_READWRITE, // read/write access
0, // maximum object size (high-order DWORD)
BUF_SIZE, // maximum object size (low-order DWORD)
g_shmem_name); // name of mapping object
if (g_hMapFile == NULL)
{
dprintf("shmem_create : Could not create file mapping object (%ld).\n",
GetLastError());
return 0;
}
g_pBuf = MapViewOfFile(g_hMapFile, // handle to map object
FILE_MAP_ALL_ACCESS, // read/write permission
0,
0,
BUF_SIZE);
if (g_pBuf == NULL)
{
dprintf("shmem_create : Could not map view of file (%ld).\n",
GetLastError());
CloseHandle(g_hMapFile);
return 0;
}
return 1;
}
bool shmem_load()
{
g_hMapFile = OpenFileMapping(
FILE_MAP_ALL_ACCESS, // read/write access
FALSE, // do not inherit the name
g_shmem_name); // name of mapping object
if (g_hMapFile == NULL)
{
dprintf("shmem_load : Could not open file mapping object (%ld).\n", GetLastError());
return 0;
}
g_pBuf = MapViewOfFile(g_hMapFile, // handle to map object
FILE_MAP_ALL_ACCESS, // read/write permission
0,
0,
BUF_SIZE);
if (g_pBuf == NULL)
{
dprintf("shmem_load : Could not map view of file (%ld).\n", GetLastError());
CloseHandle(g_hMapFile);
return 0;
}
dprintf("shmem_load : shmem loaded succesfully.\n");
return 1;
}
void shmem_free()
{
UnmapViewOfFile(g_pBuf);
CloseHandle(g_hMapFile);
}
/* jvs polling thread (to forward info to x64 dll) */
static HANDLE jvs_poll_thread;
static bool jvs_poll_stop_flag;
static unsigned int __stdcall jvs_poll_thread_proc(void *ctx)
{
while (1) {
_chuni_io_jvs_read_coin_counter(&g_shared_data.coin_counter);
g_shared_data.opbtn = 0;
g_shared_data.beams = 0;
_chuni_io_jvs_poll(&g_shared_data.opbtn, &g_shared_data.beams);
SHMEM_WRITE(&g_shared_data, sizeof(shared_data_t));
Sleep(1);
}
return 0;
}
uint16_t chu2to3_load_dll(const wchar_t *dllname)
{
#if defined(ENV64BIT)
/* x64 must just open the shmem and do nothing else */
int errcount = 0;
while (!shmem_load())
{
if (errcount >= 10)
return -1;
Sleep(5000);
errcount++;
}
Sleep(1000);
return S_OK;
#endif
/* this is the first function called so let's setup the chuniio forwarding */
hinstLib = LoadLibraryW(dllname);
if (hinstLib == NULL) {
dprintf("ERROR: unable to load %S (error %ld)\n",dllname, GetLastError());
return -1;
}
_chuni_io_get_api_version = (chuni_io_get_api_version_t)GetProcAddress(hinstLib, "chuni_io_get_api_version");
_chuni_io_jvs_init = (chuni_io_jvs_init_t)GetProcAddress(hinstLib, "chuni_io_jvs_init");
_chuni_io_jvs_poll = (chuni_io_jvs_poll_t)GetProcAddress(hinstLib, "chuni_io_jvs_poll");
_chuni_io_jvs_read_coin_counter = (chuni_io_jvs_read_coin_counter_t)GetProcAddress(hinstLib, "chuni_io_jvs_read_coin_counter");
_chuni_io_slider_init = (chuni_io_slider_init_t)GetProcAddress(hinstLib, "chuni_io_slider_init");
_chuni_io_slider_set_leds = (chuni_io_slider_set_leds_t)GetProcAddress(hinstLib, "chuni_io_slider_set_leds");
_chuni_io_slider_start = (chuni_io_slider_start_t)GetProcAddress(hinstLib, "chuni_io_slider_start");
_chuni_io_slider_stop = (chuni_io_slider_stop_t)GetProcAddress(hinstLib, "chuni_io_slider_stop");
_chuni_io_led_init = (chuni_io_led_init_t)GetProcAddress(hinstLib, "chuni_io_led_init");
_chuni_io_led_set_colors = (chuni_io_led_set_colors_t)GetProcAddress(hinstLib, "chuni_io_led_set_colors");
/* x86 has to create the shmem */
if (!shmem_create())
{
return -1;
}
return 0;
}
/* chuniio exports */
uint16_t chu2to3_io_get_api_version(void)
{
#if defined(ENV64BIT)
/* This might be called too soon so let's make sure x86 has time to write to the shmem */
SHMEM_READ(&g_shared_data, sizeof(shared_data_t));
int errcount = 0;
while (g_shared_data.version == 0)
{
if (errcount >= 3)
{
dprintf("CHU2TO3 X64: Couldn't retrieve api version from shmem, assuming 0x0100\n");
return 0x0100;
}
Sleep(5000);
errcount++;
SHMEM_READ(&g_shared_data, sizeof(shared_data_t));
}
dprintf("CHU2TO3 X64: api version is %04X\n", g_shared_data.version);
return g_shared_data.version;
#endif
if ( _chuni_io_get_api_version == NULL )
{
g_shared_data.version = 0x0100;
}
else
{
g_shared_data.version = _chuni_io_get_api_version();
}
dprintf("CHU2TO3: api version is %04X\n", g_shared_data.version);
SHMEM_WRITE(&g_shared_data, sizeof(shared_data_t));
return g_shared_data.version;
}
HRESULT chu2to3_io_jvs_init(void)
{
#if defined(ENV64BIT)
/* x86 only */
return S_OK;
#endif
_chuni_io_jvs_init();
/* start jvs poll thread now that jvs_init is done */
if (jvs_poll_thread != NULL) {
return S_OK;
}
jvs_poll_thread = (HANDLE) _beginthreadex(NULL,
0,
jvs_poll_thread_proc,
NULL,
0,
NULL);
return S_OK;
}
void chu2to3_io_jvs_read_coin_counter(uint16_t *out)
{
#if defined(ENV32BIT)
/* x86 can perform the call and update shmem (although this call never happens) */
_chuni_io_jvs_read_coin_counter(&g_shared_data.coin_counter);
SHMEM_WRITE(&g_shared_data, sizeof(shared_data_t));
return;
#endif
/* x64 must read value from shmem and update arg */
SHMEM_READ(&g_shared_data, sizeof(shared_data_t));
if (out == NULL) {
return;
}
*out = g_shared_data.coin_counter;
}
void chu2to3_io_jvs_poll(uint8_t *opbtn, uint8_t *beams)
{
#if defined(ENV32BIT)
/* x86 can perform the call and update shmem (although this call never happens) */
_chuni_io_jvs_poll(&g_shared_data.opbtn, &g_shared_data.beams);
SHMEM_WRITE(&g_shared_data, sizeof(shared_data_t));
return;
#endif
/* x64 must read value from shmem and update args */
SHMEM_READ(&g_shared_data, sizeof(shared_data_t));
*opbtn = g_shared_data.opbtn;
*beams = g_shared_data.beams;
}
HRESULT chu2to3_io_slider_init(void)
{
#if defined(ENV64BIT)
/* x86 only */
return S_OK;
#endif
return _chuni_io_slider_init();
}
void chu2to3_io_slider_start(chuni_io_slider_callback_t callback)
{
#if defined(ENV64BIT)
/* x86 only */
return;
#endif
_chuni_io_slider_start(callback);
}
void chu2to3_io_slider_stop(void)
{
#if defined(ENV64BIT)
/* x86 only */
return;
#endif
_chuni_io_slider_stop();
}
void chu2to3_io_slider_set_leds(const uint8_t *rgb)
{
#if defined(ENV64BIT)
/* x86 only */
return;
#endif
_chuni_io_slider_set_leds(rgb);
}
HRESULT chu2to3_io_led_init(void)
{
#if defined(ENV64BIT)
/* x86 only */
return S_OK;
#endif
if (_chuni_io_led_init != NULL)
return _chuni_io_led_init();
return S_OK;
}
void chu2to3_io_led_set_colors(uint8_t board, uint8_t *rgb)
{
#if defined(ENV64BIT)
/* x86 only */
return;
#endif
if (_chuni_io_led_set_colors != NULL)
{
_chuni_io_led_set_colors(board, rgb);
}
}
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