ref: 1e43b50e5d6817507fd8dc0849f052d4d7a6c0a8
dir: /src/pt2_main.c/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#ifdef _WIN32
#define WIN32_MEAN_AND_LEAN
#include <windows.h>
#include <SDL2/SDL_syswm.h>
#else
#include <signal.h>
#include <unistd.h> // chdir()
#endif
#include <sys/stat.h>
#include "pt2_helpers.h"
#include "pt2_keyboard.h"
#include "pt2_textout.h"
#include "pt2_mouse.h"
#include "pt2_diskop.h"
#include "pt2_sampler.h"
#include "pt2_config.h"
#include "pt2_visuals.h"
#include "pt2_edit.h"
#include "pt2_module_loader.h"
#include "pt2_module_saver.h"
#include "pt2_scopes.h"
#include "pt2_audio.h"
#include "pt2_bmp.h"
#include "pt2_sync.h"
#include "pt2_sampling.h"
#include "pt2_askbox.h"
#include "pt2_replayer.h"
#define CRASH_TEXT "Oh no!\nThe ProTracker 2 clone has crashed...\n\nA backup .mod was hopefully " \
"saved to the current module directory.\n\nPlease report this bug if you can.\n" \
"Try to mention what you did before the crash happened."
module_t *song = NULL; // globalized
static bool backupMadeAfterCrash, didDropFile;
#ifdef _WIN32
#define SYSMSG_FILE_ARG (WM_USER + 1)
#define ARGV_SHARED_MEM_MAX_LEN ((MAX_PATH * 2) + 2)
#ifndef _DEBUG
bool windowsKeyIsDown;
HHOOK g_hKeyboardHook;
#endif
static HWND hWnd_to;
static HANDLE oneInstHandle, hMapFile;
static LPCTSTR sharedMemBuf;
static TCHAR sharedHwndName[] = TEXT("Local\\PT2CloneHwnd");
static TCHAR sharedFileName[] = TEXT("Local\\PT2CloneFilename");
static bool handleSingleInstancing(int32_t argc, char **argv);
static void closeSingleInstancing(void);
static void handleSysMsg(SDL_Event inputEvent);
#endif
#ifndef _DEBUG
#ifdef _WIN32
static LONG WINAPI exceptionHandler(EXCEPTION_POINTERS *ptr);
#else
static void exceptionHandler(int32_t signal);
#endif
#endif
#ifdef _WIN32
static void makeSureDirIsProgramDir(void);
static void disableWasapi(void);
#endif
#ifdef __APPLE__
static void osxSetDirToProgramDirFromArgs(char **argv);
static bool checkIfAppWasTranslocated(int argc, char **argv);
#endif
static void handleInput(void);
static bool initializeVars(void);
static void handleSigTerm(void);
static void cleanUp(void);
static void clearStructs(void)
{
memset(&keyb, 0, sizeof (keyb));
memset(&mouse, 0, sizeof (mouse));
memset(&video, 0, sizeof (video));
memset(&editor, 0, sizeof (editor));
memset(&diskop, 0, sizeof (diskop));
memset(&cursor, 0, sizeof (cursor));
memset(&ui, 0, sizeof (ui));
memset(&config, 0, sizeof (config));
memset(&audio, 0, sizeof (audio));
audio.rescanAudioDevicesSupported = true;
}
int main(int argc, char *argv[])
{
#ifndef _WIN32
struct sigaction act, oldAct;
#endif
#if defined _WIN32 || defined __APPLE__
SDL_version sdlVer;
#endif
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
#endif
#if SDL_MAJOR_VERSION == 2 && SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL < 5
#pragma message("WARNING: The SDL2 dev lib is older than ver 2.0.5. You'll get fullscreen mode issues and no audio input sampling.")
#pragma message("At least version 2.0.7 is recommended.")
#endif
SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH);
SDL_EnableScreenSaver(); // allow screensaver to activate
clearStructs();
// set up crash handler
#ifndef _DEBUG
#ifdef _WIN32
SetUnhandledExceptionFilter(exceptionHandler);
#else
memset(&act, 0, sizeof (act));
act.sa_handler = exceptionHandler;
act.sa_flags = SA_RESETHAND;
sigaction(SIGILL | SIGABRT | SIGFPE | SIGSEGV, &act, &oldAct);
sigaction(SIGILL, &act, &oldAct);
sigaction(SIGABRT, &act, &oldAct);
sigaction(SIGFPE, &act, &oldAct);
sigaction(SIGSEGV, &act, &oldAct);
#endif
#endif
// on Windows and macOS, test what version SDL2.DLL is (against library version used in compilation)
#if defined _WIN32 || defined __APPLE__
SDL_GetVersion(&sdlVer);
if (sdlVer.major != SDL_MAJOR_VERSION || sdlVer.minor != SDL_MINOR_VERSION || sdlVer.patch != SDL_PATCHLEVEL)
{
#ifdef _WIN32
showErrorMsgBox("SDL2.dll is not the expected version, the program will terminate.\n\n" \
"Loaded dll version: %d.%d.%d\n" \
"Required (compiled with) version: %d.%d.%d",
sdlVer.major, sdlVer.minor, sdlVer.patch,
SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
#else
showErrorMsgBox("The loaded SDL2 library is not the expected version, the program will terminate.\n\n" \
"Loaded library version: %d.%d.%d\n" \
"Required (compiled with) version: %d.%d.%d",
sdlVer.major, sdlVer.minor, sdlVer.patch,
SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
#endif
return 0;
}
#endif
#ifdef _WIN32
// ALT+F4 is used in ProTracker, but is "close program" in Windows...
#if SDL_MINOR_VERSION >= 24 || (SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL >= 4)
SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
#endif
#ifndef _MSC_VER
SetProcessDPIAware();
#endif
if (!SDL_HasSSE())
{
showErrorMsgBox("Your computer's processor doesn't have the SSE instruction set\n" \
"which is needed for this program to run. Sorry!");
return 0;
}
if (!SDL_HasSSE2())
{
showErrorMsgBox("Your computer's processor doesn't have the SSE2 instruction set\n" \
"which is needed for this program to run. Sorry!");
return 0;
}
disableWasapi(); // disable problematic WASAPI SDL2 audio driver on Windows (causes clicks/pops sometimes...)
// 13.03.2020: This is still needed with SDL 2.0.12...
#endif
/* SDL 2.0.9 for Windows has a serious bug where you need to initialize the joystick subsystem
** (even if you don't use it) or else weird things happen like random stutters, keyboard (rarely) being
** reinitialized in Windows and what not.
** Ref.: https://bugzilla.libsdl.org/show_bug.cgi?id=4391
*/
#if defined _WIN32 && SDL_MAJOR_VERSION == 2 && SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL == 9
if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) != 0)
#else
if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO) != 0)
#endif
{
showErrorMsgBox("Couldn't initialize SDL: %s", SDL_GetError());
return 0;
}
/* Text input is started by default in SDL2, turn it off to remove ~2ms spikes per key press.
** We manuallay start it again when someone clicks on a text edit box, and stop it when done.
** Ref.: https://bugzilla.libsdl.org/show_bug.cgi?id=4166
*/
SDL_StopTextInput();
#ifdef __APPLE__
if (checkIfAppWasTranslocated(argc, argv))
{
SDL_Quit();
return 0;
}
#endif
#ifdef __APPLE__
osxSetDirToProgramDirFromArgs(argv);
#endif
#ifdef _WIN32
// Windows: the Win key has to be taken over to work like the Amiga key
#ifndef _DEBUG
windowsKeyIsDown = false;
g_hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, lowLevelKeyboardProc, GetModuleHandle(NULL), 0);
#endif
makeSureDirIsProgramDir();
#endif
if (!initializeVars())
{
cleanUp();
SDL_Quit();
return 1;
}
loadConfig();
if (!setupVideo())
{
cleanUp();
SDL_Quit();
return 1;
}
#ifdef _WIN32
// allow only one instance, and send arguments to it (song to play)
if (handleSingleInstancing(argc, argv))
{
cleanUp();
SDL_Quit();
return 0; // close current instance, the main instance got a message now
}
SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
#endif
hpc_Init();
hpc_SetDurationInHz(&video.vblankHpc, VBLANK_HZ);
if (!initKaiserTable() || !setupAudio() || !unpackBMPs())
{
cleanUp();
SDL_Quit();
return 1;
}
setupSprites();
song = createEmptyMod();
if (song == NULL)
{
cleanUp();
SDL_Quit();
return 1;
}
if (!initScopes())
{
cleanUp();
SDL_Quit();
return 1;
}
modSetTempo(editor.initialTempo, false);
modSetSpeed(editor.initialSpeed);
updateWindowTitle(MOD_NOT_MODIFIED);
pointerSetMode(POINTER_MODE_IDLE, DO_CARRY);
statusAllRight();
setStatusMessage("PROTRACKER V2.3D", NO_CARRY);
// load a .MOD from the command arguments if passed (also ignore OS X < 10.9 -psn argument on double-click launch)
if ((argc >= 2 && argv[1][0] != '\0') && (argc != 2 || strncmp(argv[1], "-psn_", 5)))
{
loadModFromArg(argv[1]);
// play song
if (song->loaded)
{
editor.playMode = PLAY_MODE_NORMAL;
modPlay(DONT_SET_PATTERN, 0, DONT_SET_ROW);
editor.currMode = MODE_PLAY;
pointerSetMode(POINTER_MODE_PLAY, DO_CARRY);
statusAllRight();
}
}
else if (!editor.configFound)
{
displayErrorMsg("CONFIG NOT FOUND!");
}
displayMainScreen();
fillToVuMetersBgBuffer();
updateCursorPos();
SDL_ShowWindow(video.window);
if (config.startInFullscreen)
toggleFullscreen();
changePathToDesktop(); // change path to desktop now
diskOpSetInitPath(); // set path to custom path in config (if present)
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
editor.mainLoopOngoing = true;
hpc_ResetEndTime(&video.vblankHpc); // this must be the very last thing done before entering the main loop
// XXX: if you change anything in the main loop, make sure it goes in the askBox()(pt2_askbox.c) loop too, if needed
while (editor.programRunning)
{
handleThreadedAskBox();
sinkVisualizerBars();
updateChannelSyncBuffer();
readMouseXY();
readKeyModifiers(); // set/clear CTRL/ALT/SHIFT/AMIGA key states
handleInput();
updateMouseCounters();
handleKeyRepeat(keyb.lastRepKey);
if (!mouse.buttonWaiting && ui.sampleMarkingPos == -1 && !ui.forceSampleDrag && !ui.forceVolDrag && !ui.forceSampleEdit)
handleGUIButtonRepeat();
renderFrame();
flipFrame();
}
cleanUp();
SDL_Quit();
return 0;
}
static void handleInput(void)
{
SDL_Event event;
while (SDL_PollEvent(&event))
{
if (event.type == SDL_WINDOWEVENT)
{
if (event.window.event == SDL_WINDOWEVENT_HIDDEN)
video.windowHidden = true;
else if (event.window.event == SDL_WINDOWEVENT_SHOWN)
video.windowHidden = false;
// reset vblank end time if we minimize window
if (event.window.event == SDL_WINDOWEVENT_MINIMIZED || event.window.event == SDL_WINDOWEVENT_FOCUS_LOST)
hpc_ResetEndTime(&video.vblankHpc);
}
#ifdef _WIN32
handleSysMsg(event);
#endif
if (ui.editTextFlag && event.type == SDL_TEXTINPUT)
{
// text input when editing texts/numbers
char inputChar = event.text.text[0];
if (inputChar == '\0')
continue;
handleTextEditInputChar(inputChar);
continue; // continue SDL event loop
}
else if (event.type == SDL_MOUSEWHEEL)
{
if (event.wheel.y < 0) mouseWheelDownHandler();
else if (event.wheel.y > 0) mouseWheelUpHandler();
}
else if (event.type == SDL_DROPFILE)
{
// kludge: allow focus-clickthrough after drag-n-drop
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
didDropFile = true;
loadDroppedFile(event.drop.file, (uint32_t)strlen(event.drop.file), false, true);
SDL_free(event.drop.file);
}
if (event.type == SDL_QUIT)
{
handleSigTerm();
}
else if (event.type == SDL_KEYUP)
{
keyUpHandler(event.key.keysym.scancode);
}
else if (event.type == SDL_KEYDOWN)
{
if (editor.repeatKeyFlag || keyb.lastRepKey != event.key.keysym.scancode)
keyDownHandler(event.key.keysym.scancode, event.key.keysym.sym);
}
else if (event.type == SDL_MOUSEBUTTONUP)
{
mouseButtonUpHandler(event.button.button);
if (ui.introTextShown)
{
if (!ui.diskOpScreenShown && !editor.errorMsgActive && !ui.askBoxShown)
statusAllRight();
ui.introTextShown = false;
}
// kludge: we drag-n-dropped a file before this mouse click release, restore focus-clickthrough mode
if (didDropFile)
{
didDropFile = false;
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "0");
}
}
else if (event.type == SDL_MOUSEBUTTONDOWN)
{
if (ui.sampleMarkingPos == -1 && !ui.forceSampleDrag && !ui.forceVolDrag && !ui.forceSampleEdit)
mouseButtonDownHandler(event.button.button);
}
if (ui.throwExit)
{
editor.programRunning = false;
if (diskop.isFilling)
{
diskop.isFilling = false;
diskop.forceStopReading = true;
SDL_WaitThread(diskop.fillThread, NULL);
}
if (editor.mod2WavOngoing)
{
editor.mod2WavOngoing = false;
editor.abortMod2Wav = true;
SDL_WaitThread(editor.mod2WavThread, NULL);
}
}
}
}
static bool initializeVars(void)
{
setDefaultPalette();
editor.repeatKeyFlag = (SDL_GetModState() & KMOD_CAPS) ? true : false;
// set key repeat rate to 49.9204Hz (Amiga PAL vblank rate)
const double dVblankHzRatio = AMIGA_PAL_VBLANK_HZ / (double)VBLANK_HZ;
keyb.repeatDelta = (uint64_t)floor((UINT32_MAX+1.0) * dVblankHzRatio);
strcpy(editor.mixText, "MIX 01+02 TO 03");
// allocate some memory
if (!allocSamplerVars() || !allocDiskOpVars())
goto oom;
config.defModulesDir = (char *)calloc(PATH_MAX + 1, sizeof (char));
config.defSamplesDir = (char *)calloc(PATH_MAX + 1, sizeof (char));
editor.tempSample = (int8_t *)calloc(131070, 1);
if (config.defModulesDir == NULL || config.defSamplesDir == NULL || editor.tempSample == NULL)
goto oom;
turnOffVoices();
// set various non-zero values
editor.vol1 = 100;
editor.vol2 = 100;
editor.note1 = 36;
editor.note2 = 36;
editor.note3 = 36;
editor.note4 = 36;
editor.f7Pos = 16;
editor.f8Pos = 32;
editor.f9Pos = 48;
editor.f10Pos = 63;
editor.oldNote1 = 36;
editor.oldNote2 = 36;
editor.oldNote3 = 36;
editor.oldNote4 = 36;
editor.tuningVol = 32;
editor.sampleVol = 100;
editor.tuningNote = 24; // C-3
editor.metroSpeed = 4;
editor.editMoveAdd = 1;
editor.initialTempo = 125;
editor.initialSpeed = 6;
editor.resampleNote = 24;
editor.currPlayNote = 24;
editor.effectMacros[0] = 0x102;
editor.effectMacros[1] = 0x202;
editor.effectMacros[2] = 0x037;
editor.effectMacros[3] = 0x047;
editor.effectMacros[4] = 0x304;
editor.effectMacros[5] = 0xF06;
editor.effectMacros[6] = 0xC10;
editor.effectMacros[7] = 0xC20;
editor.effectMacros[8] = 0xE93;
editor.effectMacros[9] = 0xA0F;
editor.multiModeNext[0] = 2;
editor.multiModeNext[1] = 3;
editor.multiModeNext[2] = 4;
editor.multiModeNext[3] = 1;
ui.introTextShown = true;
editor.normalizeFiltersFlag = true;
editor.markStartOfs = -1;
ui.sampleMarkingPos = -1;
ui.previousPointerMode = ui.pointerMode;
// setup GUI text pointers
editor.vol1Disp = &editor.vol1;
editor.vol2Disp = &editor.vol2;
editor.sampleToDisp = &editor.sampleTo;
editor.lpCutOffDisp = &editor.lpCutOff;
editor.hpCutOffDisp = &editor.hpCutOff;
editor.samplePosDisp = &editor.samplePos;
editor.sampleVolDisp = &editor.sampleVol;
editor.currSampleDisp = &editor.currSample;
editor.metroSpeedDisp = &editor.metroSpeed;
editor.sampleFromDisp = &editor.sampleFrom;
editor.chordLengthDisp = &editor.chordLength;
editor.metroChannelDisp = &editor.metroChannel;
editor.quantizeValueDisp = &config.quantizeValue;
editor.mod2WavFadeOutSeconds = 6;
editor.programRunning = true;
return true;
oom:
showErrorMsgBox("Out of memory!");
return false;
}
static void handleSigTerm(void)
{
if (editor.mod2WavOngoing)
{
editor.mod2WavOngoing = false;
editor.abortMod2Wav = true;
SDL_WaitThread(editor.mod2WavThread, NULL);
removeAskBox();
}
if (song->modified)
{
resetAllScreens();
if (!video.fullscreen)
{
// de-minimize window and set focus so that the user sees the message box
SDL_RestoreWindow(video.window);
SDL_RaiseWindow(video.window);
}
if (askBox(ASKBOX_YES_NO, "REALLY QUIT ?"))
ui.throwExit = true;
}
else
{
ui.throwExit = true;
}
}
// macOS/OS X specific routines
#ifdef __APPLE__
static void osxSetDirToProgramDirFromArgs(char **argv)
{
/* OS X/macOS: hackish way of setting the current working directory to the place where we double clicked
** on the icon (for protracker.ini loading)
*/
// if we launched from the terminal, argv[0][0] would be '.'
if (argv[0] != NULL && argv[0][0] == DIR_DELIMITER) // don't do the hack if we launched from the terminal
{
char *tmpPath = strdup(argv[0]);
if (tmpPath != NULL)
{
// cut off program filename
int32_t tmpPathLen = strlen(tmpPath);
for (int32_t i = tmpPathLen-1; i >= 0; i--)
{
if (tmpPath[i] == DIR_DELIMITER)
{
tmpPath[i] = '\0';
break;
}
}
chdir(tmpPath); // path to binary
chdir("../../../"); // we should now be in the directory where the config can be.
free(tmpPath);
}
}
}
static bool checkIfAppWasTranslocated(int argc, char **argv)
{
const char startOfStrToCmp[] = "/private/var/folders/";
// this is not 100% guaranteed to work, but it's Good Enough
if (argc > 0 && !_strnicmp(argv[0], startOfStrToCmp, sizeof (startOfStrToCmp)-1))
{
showErrorMsgBox(
"The program was translocated to a random sandbox environment for security reasons, and thus it can't find and load protracker.ini.\n\n" \
"Don't worry, this is normal. To fix the issue you need to move the program/.app somewhere to clear its QTN_FLAG_TRANSLOCATE flag.\n\n" \
"Instructions:\n" \
"1) Close the window.\n" \
"2) Move/drag (do NOT copy) the program (pt2-clone-macos) to another folder, then move it back to where it was. Don't move the folder, move the executable itself.\n" \
"3) Run the program again, and if you did it right it should be permanently fixed.\n\n" \
"This is not my fault, it's a security concept introduced in macOS 10.12 for unsigned programs downloaded and unzipped from the internet."
);
return true;
}
return false;
}
#endif
// Windows specific routines
#ifdef _WIN32
static void disableWasapi(void)
{
// disable problematic WASAPI SDL2 audio driver on Windows (causes clicks/pops sometimes...)
const int32_t numAudioDrivers = SDL_GetNumAudioDrivers();
if (numAudioDrivers <= 1)
return;
// look for directsound and enable it if found
for (int32_t i = 0; i < numAudioDrivers; i++)
{
const char *audioDriver = SDL_GetAudioDriver(i);
if (audioDriver != NULL && strcmp("directsound", audioDriver) == 0)
{
SDL_setenv("SDL_AUDIODRIVER", "directsound", true);
audio.rescanAudioDevicesSupported = false;
return;
}
}
// directsound is not available, try winmm
for (int32_t i = 0; i < numAudioDrivers; i++)
{
const char *audioDriver = SDL_GetAudioDriver(i);
if (audioDriver != NULL && strcmp("winmm", audioDriver) == 0)
{
SDL_setenv("SDL_AUDIODRIVER", "winmm", true);
audio.rescanAudioDevicesSupported = false;
return;
}
}
// we didn't find directsound or winmm, let's use wasapi after all...
}
static void makeSureDirIsProgramDir(void)
{
#ifndef _DEBUG
int32_t i;
// this can return two paths in Windows, but first one is .exe path
UNICHAR *path = GetCommandLineW();
if (path == NULL)
return;
UNICHAR *allocPtr = UNICHAR_STRDUP(path);
if (allocPtr == NULL)
return; // out of memory (but it doesn't matter)
path = allocPtr;
int32_t pathLen = (int32_t)UNICHAR_STRLEN(path);
// remove first "
if (path[0] == L'\"')
path++;
// end string if we find another " (there can be multiple paths)
for (i = 0; i < pathLen; i++)
{
if (path[i] == L'\"')
{
path[i] = L'\0';
pathLen = (int32_t)UNICHAR_STRLEN(path);
break;
}
}
// get path without filename now
for (i = pathLen-1; i >= 0; i--)
{
if (i < pathLen-1 && path[i] == L'\\')
{
path[i] = L'\0';
break;
}
}
if (i <= 0)
{
// argv[0] doesn't contain the path, we're most likely in the clone's directory now
free(allocPtr);
return;
}
// "C:" -> "C:\"
if (path[i] == L':')
path[i + 1] = L'\\';
SetCurrentDirectoryW(path); // this *can* fail, but it doesn't matter
free(allocPtr);
#else
return;
#endif
}
static bool instanceAlreadyOpen(void)
{
hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, sharedHwndName);
if (hMapFile != NULL)
return true; // another instance is already open
// no instance is open, let's created a shared memory file with hWnd in it
oneInstHandle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof (HWND), sharedHwndName);
if (oneInstHandle != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(oneInstHandle, FILE_MAP_ALL_ACCESS, 0, 0, sizeof (HWND));
if (sharedMemBuf != NULL)
{
CopyMemory((PVOID)sharedMemBuf, &video.hWnd, sizeof (HWND));
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
}
}
return false;
}
static bool handleSingleInstancing(int32_t argc, char **argv)
{
SDL_SysWMinfo wmInfo;
SDL_VERSION(&wmInfo.version);
if (!SDL_GetWindowWMInfo(video.window, &wmInfo))
return false;
video.hWnd = wmInfo.info.win.window;
if (instanceAlreadyOpen() && argc >= 2 && argv[1][0] != '\0')
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, sizeof (HWND));
if (sharedMemBuf != NULL)
{
memcpy(&hWnd_to, sharedMemBuf, sizeof (HWND));
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
CloseHandle(hMapFile);
hMapFile = NULL;
hMapFile = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, ARGV_SHARED_MEM_MAX_LEN, sharedFileName);
if (hMapFile != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, ARGV_SHARED_MEM_MAX_LEN);
if (sharedMemBuf != NULL)
{
strcpy((char *)sharedMemBuf, argv[1]);
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
SendMessage(hWnd_to, SYSMSG_FILE_ARG, 0, 0);
Sleep(80); // wait a bit to make sure first instance received msg
CloseHandle(hMapFile);
hMapFile = NULL;
return true; // quit instance now
}
}
return true;
}
CloseHandle(hMapFile);
hMapFile = NULL;
}
return false;
}
static void handleSysMsg(SDL_Event inputEvent)
{
if (inputEvent.type != SDL_SYSWMEVENT)
return;
SDL_SysWMmsg *wmMsg = inputEvent.syswm.msg;
if (wmMsg->subsystem == SDL_SYSWM_WINDOWS && wmMsg->msg.win.msg == SYSMSG_FILE_ARG)
{
hMapFile = OpenFileMapping(FILE_MAP_READ, FALSE, sharedFileName);
if (hMapFile != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, ARGV_SHARED_MEM_MAX_LEN);
if (sharedMemBuf != NULL)
{
loadDroppedFile((char *)sharedMemBuf, (uint32_t)strlen(sharedMemBuf), true, true);
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
}
CloseHandle(hMapFile);
hMapFile = NULL;
}
}
}
void closeSingleInstancing(void)
{
if (oneInstHandle != NULL)
{
CloseHandle(oneInstHandle);
oneInstHandle = NULL;
}
}
static LONG WINAPI exceptionHandler(EXCEPTION_POINTERS *ptr)
#else
static void exceptionHandler(int32_t signal)
#endif
{
#define BACKUP_FILES_TO_TRY 1000
char fileName[32];
uint16_t i;
struct stat statBuffer;
#ifdef _WIN32
(void)ptr;
if (oneInstHandle != NULL) CloseHandle(oneInstHandle);
#else
if (signal == 15) return;
#endif
if (!backupMadeAfterCrash)
{
if (editor.modulesPathU != NULL && UNICHAR_CHDIR(editor.modulesPathU) == 0)
{
// find a free filename
for (i = 1; i < 1000; i++)
{
sprintf(fileName, "backup%03d.mod", i);
if (stat(fileName, &statBuffer) != 0)
break; // file doesn't exist, we're good
}
if (i != 1000)
modSave(fileName);
}
backupMadeAfterCrash = true; // set this flag to prevent multiple backups from being saved at once
showErrorMsgBox(CRASH_TEXT);
}
#ifdef _WIN32
return EXCEPTION_CONTINUE_SEARCH;
#endif
}
static void cleanUp(void) // never call this inside the main loop!
{
modStop();
modFree();
audioClose();
deAllocSamplerVars();
freeDiskOpMem();
freeDiskOpEntryMem();
freeBMPs();
videoClose();
freeSprites();
freeAudioDeviceList(); // pt2_sampling.c
freeKaiserTable(); // pt2_sampling.c
if (config.defModulesDir != NULL) free(config.defModulesDir);
if (config.defSamplesDir != NULL) free(config.defSamplesDir);
if (editor.tempSample != NULL) free(editor.tempSample);
#ifdef _WIN32
#ifndef _DEBUG
UnhookWindowsHookEx(g_hKeyboardHook);
#endif
if (oneInstHandle != NULL)
{
CloseHandle(oneInstHandle);
oneInstHandle = NULL;
}
#endif
}