/* ScummVM - Graphic Adventure Engine * * ScummVM is the legal property of its developers, whose names * are too numerous to list here. Please refer to the COPYRIGHT * file distributed with this source distribution. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * $URL$ * $Id$ * */ #if defined(WIN32) #include // winnt.h defines ARRAYSIZE, but we want our own one... - this is needed before including util.h #undef ARRAYSIZE #endif #include "backends/platform/sdl/sdl.h" #include "common/archive.h" #include "common/config-manager.h" #include "common/debug.h" #include "common/EventRecorder.h" #include "common/util.h" #ifdef UNIX #include "backends/saves/posix/posix-saves.h" #else #include "backends/saves/default/default-saves.h" #endif #include "backends/timer/default/default-timer.h" #include "sound/mixer_intern.h" #include "icons/scummvm.xpm" #include // for getTimeAndDate() //#define SAMPLES_PER_SEC 11025 #define SAMPLES_PER_SEC 22050 //#define SAMPLES_PER_SEC 44100 /* * Include header files needed for the getFilesystemFactory() method. */ #if defined(__amigaos4__) #include "backends/fs/amigaos4/amigaos4-fs-factory.h" #elif defined(UNIX) #include "backends/fs/posix/posix-fs-factory.h" #elif defined(WIN32) #include "backends/fs/windows/windows-fs-factory.h" #endif #if defined(UNIX) #ifdef MACOSX #define DEFAULT_CONFIG_FILE "Library/Preferences/ScummVM Preferences" #elif defined(SAMSUNGTV) #define DEFAULT_CONFIG_FILE "/dtv/usb/sda1/.scummvmrc" #else #define DEFAULT_CONFIG_FILE ".scummvmrc" #endif #else #define DEFAULT_CONFIG_FILE "scummvm.ini" #endif #if defined(MACOSX) || defined(IPHONE) #include "CoreFoundation/CoreFoundation.h" #endif static Uint32 timer_handler(Uint32 interval, void *param) { ((DefaultTimerManager *)param)->handler(); return interval; } AspectRatio::AspectRatio(int w, int h) { // TODO : Validation and so on... // Currently, we just ensure the program don't instantiate non-supported aspect ratios _kw = w; _kh = h; } static const size_t AR_COUNT = 4; static const char* desiredAspectRatioAsStrings[AR_COUNT] = { "auto", "4/3", "16/9", "16/10" }; static const AspectRatio desiredAspectRatios[AR_COUNT] = { AspectRatio(0, 0), AspectRatio(4,3), AspectRatio(16,9), AspectRatio(16,10) }; static AspectRatio getDesiredAspectRatio() { //TODO : We could parse an arbitrary string, if we code enough proper validation Common::String desiredAspectRatio = ConfMan.get("desired_screen_aspect_ratio"); for (size_t i = 0; i < AR_COUNT; i++) { assert(desiredAspectRatioAsStrings[i] != NULL); if (!scumm_stricmp(desiredAspectRatio.c_str(), desiredAspectRatioAsStrings[i])) { return desiredAspectRatios[i]; } } // TODO : Report a warning return AspectRatio(0, 0); } void OSystem_SDL::initBackend() { assert(!_inited); int joystick_num = ConfMan.getInt("joystick_num"); uint32 sdlFlags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER; if (ConfMan.hasKey("disable_sdl_parachute")) sdlFlags |= SDL_INIT_NOPARACHUTE; #ifdef _WIN32_WCE if (ConfMan.hasKey("use_GDI") && ConfMan.getBool("use_GDI")) { SDL_VideoInit("windib", 0); sdlFlags ^= SDL_INIT_VIDEO; } #endif if (joystick_num > -1) sdlFlags |= SDL_INIT_JOYSTICK; if (SDL_Init(sdlFlags) == -1) { error("Could not initialize SDL: %s", SDL_GetError()); } _graphicsMutex = createMutex(); SDL_ShowCursor(SDL_DISABLE); // Enable unicode support if possible SDL_EnableUNICODE(1); memset(&_oldVideoMode, 0, sizeof(_oldVideoMode)); memset(&_videoMode, 0, sizeof(_videoMode)); memset(&_transactionDetails, 0, sizeof(_transactionDetails)); _cksumValid = false; #if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) && !defined(DISABLE_SCALERS) _videoMode.mode = GFX_DOUBLESIZE; _videoMode.scaleFactor = 2; _videoMode.aspectRatioCorrection = ConfMan.getBool("aspect_ratio"); _videoMode.desiredAspectRatio = getDesiredAspectRatio(); _scalerProc = Normal2x; #else // for small screen platforms _videoMode.mode = GFX_NORMAL; _videoMode.scaleFactor = 1; _videoMode.aspectRatioCorrection = false; _scalerProc = Normal1x; #endif _scalerType = 0; _modeFlags = 0; #if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) _videoMode.fullscreen = ConfMan.getBool("fullscreen"); #else _videoMode.fullscreen = true; #endif #if !defined(MACOSX) && !defined(__SYMBIAN32__) // Setup a custom program icon. // Don't set icon on OS X, as we use a nicer external icon there. // Don't for Symbian: it uses the EScummVM.aif file for the icon. setupIcon(); #endif // enable joystick if (joystick_num > -1 && SDL_NumJoysticks() > 0) { printf("Using joystick: %s\n", SDL_JoystickName(0)); _joystick = SDL_JoystickOpen(joystick_num); } // Create the savefile manager, if none exists yet (we check for this to // allow subclasses to provide their own). if (_savefile == 0) { #ifdef UNIX _savefile = new POSIXSaveFileManager(); #else _savefile = new DefaultSaveFileManager(); #endif } // Create and hook up the mixer, if none exists yet (we check for this to // allow subclasses to provide their own). if (_mixer == 0) { setupMixer(); } // Create and hook up the timer manager, if none exists yet (we check for // this to allow subclasses to provide their own). if (_timer == 0) { // Note: We could implement a custom SDLTimerManager by using // SDL_AddTimer. That might yield better timer resolution, but it would // also change the semantics of a timer: Right now, ScummVM timers // *never* run in parallel, due to the way they are implemented. If we // switched to SDL_AddTimer, each timer might run in a separate thread. // However, not all our code is prepared for that, so we can't just // switch. Still, it's a potential future change to keep in mind. _timer = new DefaultTimerManager(); _timerID = SDL_AddTimer(10, &timer_handler, _timer); } // Invoke parent implementation of this method OSystem::initBackend(); _inited = true; } OSystem_SDL::OSystem_SDL() : #ifdef USE_OSD _osdSurface(0), _osdAlpha(SDL_ALPHA_TRANSPARENT), _osdFadeStartTime(0), #endif _hwscreen(0), _screen(0), _tmpscreen(0), #ifdef USE_RGB_COLOR _screenFormat(Graphics::PixelFormat::createFormatCLUT8()), _cursorFormat(Graphics::PixelFormat::createFormatCLUT8()), #endif _overlayVisible(false), _overlayscreen(0), _tmpscreen2(0), _samplesPerSec(0), _cdrom(0), _scalerProc(0), _modeChanged(false), _screenChangeCount(0), _dirtyChecksums(0), _mouseVisible(false), _mouseNeedsRedraw(false), _mouseData(0), _mouseSurface(0), _mouseOrigSurface(0), _cursorTargetScale(1), _cursorPaletteDisabled(true), _joystick(0), _currentShakePos(0), _newShakePos(0), _paletteDirtyStart(0), _paletteDirtyEnd(0), #if MIXER_DOUBLE_BUFFERING _soundMutex(0), _soundCond(0), _soundThread(0), _soundThreadIsRunning(false), _soundThreadShouldQuit(false), #endif _fsFactory(0), _savefile(0), _mixer(0), _timer(0), _screenIsLocked(false), _graphicsMutex(0), _transactionMode(kTransactionNone) { // allocate palette storage _currentPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256); _cursorPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256); _mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0; // reset mouse state memset(&_km, 0, sizeof(_km)); memset(&_mouseCurState, 0, sizeof(_mouseCurState)); _inited = false; #if defined(__amigaos4__) _fsFactory = new AmigaOSFilesystemFactory(); #elif defined(UNIX) _fsFactory = new POSIXFilesystemFactory(); #elif defined(WIN32) _fsFactory = new WindowsFilesystemFactory(); #elif defined(__SYMBIAN32__) // Do nothing since its handled by the Symbian SDL inheritance #else #error Unknown and unsupported FS backend #endif } OSystem_SDL::~OSystem_SDL() { SDL_RemoveTimer(_timerID); closeMixer(); free(_dirtyChecksums); free(_currentPalette); free(_cursorPalette); free(_mouseData); delete _savefile; delete _timer; } uint32 OSystem_SDL::getMillis() { uint32 millis = SDL_GetTicks(); g_eventRec.processMillis(millis); return millis; } void OSystem_SDL::delayMillis(uint msecs) { SDL_Delay(msecs); } void OSystem_SDL::getTimeAndDate(TimeDate &td) const { time_t curTime = time(0); struct tm t = *localtime(&curTime); td.tm_sec = t.tm_sec; td.tm_min = t.tm_min; td.tm_hour = t.tm_hour; td.tm_mday = t.tm_mday; td.tm_mon = t.tm_mon; td.tm_year = t.tm_year; } Common::TimerManager *OSystem_SDL::getTimerManager() { assert(_timer); return _timer; } Common::SaveFileManager *OSystem_SDL::getSavefileManager() { assert(_savefile); return _savefile; } FilesystemFactory *OSystem_SDL::getFilesystemFactory() { assert(_fsFactory); return _fsFactory; } void OSystem_SDL::addSysArchivesToSearchSet(Common::SearchSet &s, int priority) { #ifdef DATA_PATH // Add the global DATA_PATH to the directory search list // FIXME: We use depth = 4 for now, to match the old code. May want to change that Common::FSNode dataNode(DATA_PATH); if (dataNode.exists() && dataNode.isDirectory()) { s.add(DATA_PATH, new Common::FSDirectory(dataNode, 4), priority); } #endif #ifdef MACOSX // Get URL of the Resource directory of the .app bundle CFURLRef fileUrl = CFBundleCopyResourcesDirectoryURL(CFBundleGetMainBundle()); if (fileUrl) { // Try to convert the URL to an absolute path UInt8 buf[MAXPATHLEN]; if (CFURLGetFileSystemRepresentation(fileUrl, true, buf, sizeof(buf))) { // Success: Add it to the search path Common::String bundlePath((const char *)buf); s.add("__OSX_BUNDLE__", new Common::FSDirectory(bundlePath), priority); } CFRelease(fileUrl); } #endif } static Common::String getDefaultConfigFileName() { char configFile[MAXPATHLEN]; #if defined (WIN32) && !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) OSVERSIONINFO win32OsVersion; ZeroMemory(&win32OsVersion, sizeof(OSVERSIONINFO)); win32OsVersion.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx(&win32OsVersion); // Check for non-9X version of Windows. if (win32OsVersion.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS) { // Use the Application Data directory of the user profile. if (win32OsVersion.dwMajorVersion >= 5) { if (!GetEnvironmentVariable("APPDATA", configFile, sizeof(configFile))) error("Unable to access application data directory"); } else { if (!GetEnvironmentVariable("USERPROFILE", configFile, sizeof(configFile))) error("Unable to access user profile directory"); strcat(configFile, "\\Application Data"); CreateDirectory(configFile, NULL); } strcat(configFile, "\\ScummVM"); CreateDirectory(configFile, NULL); strcat(configFile, "\\" DEFAULT_CONFIG_FILE); FILE *tmp = NULL; if ((tmp = fopen(configFile, "r")) == NULL) { // Check windows directory char oldConfigFile[MAXPATHLEN]; GetWindowsDirectory(oldConfigFile, MAXPATHLEN); strcat(oldConfigFile, "\\" DEFAULT_CONFIG_FILE); if ((tmp = fopen(oldConfigFile, "r"))) { strcpy(configFile, oldConfigFile); fclose(tmp); } } else { fclose(tmp); } } else { // Check windows directory GetWindowsDirectory(configFile, MAXPATHLEN); strcat(configFile, "\\" DEFAULT_CONFIG_FILE); } #elif defined(UNIX) // On UNIX type systems, by default we store the config file inside // to the HOME directory of the user. // // GP2X is Linux based but Home dir can be read only so do not use // it and put the config in the executable dir. // // On the iPhone, the home dir of the user when you launch the app // from the Springboard, is /. Which we don't want. const char *home = getenv("HOME"); if (home != NULL && strlen(home) < MAXPATHLEN) snprintf(configFile, MAXPATHLEN, "%s/%s", home, DEFAULT_CONFIG_FILE); else strcpy(configFile, DEFAULT_CONFIG_FILE); #else strcpy(configFile, DEFAULT_CONFIG_FILE); #endif return configFile; } Common::SeekableReadStream *OSystem_SDL::createConfigReadStream() { Common::FSNode file(getDefaultConfigFileName()); return file.createReadStream(); } Common::WriteStream *OSystem_SDL::createConfigWriteStream() { Common::FSNode file(getDefaultConfigFileName()); return file.createWriteStream(); } void OSystem_SDL::setWindowCaption(const char *caption) { Common::String cap; byte c; // The string caption is supposed to be in LATIN-1 encoding. // SDL expects UTF-8. So we perform the conversion here. while ((c = *(const byte *)caption++)) { if (c < 0x80) cap += c; else { cap += 0xC0 | (c >> 6); cap += 0x80 | (c & 0x3F); } } SDL_WM_SetCaption(cap.c_str(), cap.c_str()); } bool OSystem_SDL::hasFeature(Feature f) { return (f == kFeatureFullscreenMode) || (f == kFeatureAspectRatioCorrection) || (f == kFeatureAutoComputeDirtyRects) || (f == kFeatureCursorHasPalette) || (f == kFeatureIconifyWindow); } void OSystem_SDL::setFeatureState(Feature f, bool enable) { switch (f) { case kFeatureFullscreenMode: setFullscreenMode(enable); break; case kFeatureAspectRatioCorrection: setAspectRatioCorrection(enable); break; case kFeatureAutoComputeDirtyRects: if (enable) _modeFlags |= DF_WANT_RECT_OPTIM; else _modeFlags &= ~DF_WANT_RECT_OPTIM; break; case kFeatureIconifyWindow: if (enable) SDL_WM_IconifyWindow(); break; default: break; } } bool OSystem_SDL::getFeatureState(Feature f) { assert (_transactionMode == kTransactionNone); switch (f) { case kFeatureFullscreenMode: return _videoMode.fullscreen; case kFeatureAspectRatioCorrection: return _videoMode.aspectRatioCorrection; case kFeatureAutoComputeDirtyRects: return _modeFlags & DF_WANT_RECT_OPTIM; default: return false; } } void OSystem_SDL::quit() { if (_cdrom) { SDL_CDStop(_cdrom); SDL_CDClose(_cdrom); } unloadGFXMode(); deleteMutex(_graphicsMutex); if (_joystick) SDL_JoystickClose(_joystick); SDL_ShowCursor(SDL_ENABLE); SDL_RemoveTimer(_timerID); closeMixer(); free(_dirtyChecksums); free(_currentPalette); free(_cursorPalette); free(_mouseData); delete _timer; SDL_Quit(); // Even Manager requires save manager for storing // recorded events delete getEventManager(); delete _savefile; #if !defined(SAMSUNGTV) exit(0); #endif } void OSystem_SDL::setupIcon() { int x, y, w, h, ncols, nbytes, i; unsigned int rgba[256]; unsigned int *icon; sscanf(scummvm_icon[0], "%d %d %d %d", &w, &h, &ncols, &nbytes); if ((w > 512) || (h > 512) || (ncols > 255) || (nbytes > 1)) { warning("Could not load the built-in icon (%d %d %d %d)", w, h, ncols, nbytes); return; } icon = (unsigned int*)malloc(w*h*sizeof(unsigned int)); if (!icon) { warning("Could not allocate temp storage for the built-in icon"); return; } for (i = 0; i < ncols; i++) { unsigned char code; char color[32]; unsigned int col; sscanf(scummvm_icon[1 + i], "%c c %s", &code, color); if (!strcmp(color, "None")) col = 0x00000000; else if (!strcmp(color, "black")) col = 0xFF000000; else if (color[0] == '#') { sscanf(color + 1, "%06x", &col); col |= 0xFF000000; } else { warning("Could not load the built-in icon (%d %s - %s) ", code, color, scummvm_icon[1 + i]); free(icon); return; } rgba[code] = col; } for (y = 0; y < h; y++) { const char *line = scummvm_icon[1 + ncols + y]; for (x = 0; x < w; x++) { icon[x + w * y] = rgba[(int)line[x]]; } } SDL_Surface *sdl_surf = SDL_CreateRGBSurfaceFrom(icon, w, h, 32, w * 4, 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000); if (!sdl_surf) { warning("SDL_CreateRGBSurfaceFrom(icon) failed"); } SDL_WM_SetIcon(sdl_surf, NULL); SDL_FreeSurface(sdl_surf); free(icon); } OSystem::MutexRef OSystem_SDL::createMutex() { return (MutexRef) SDL_CreateMutex(); } void OSystem_SDL::lockMutex(MutexRef mutex) { SDL_mutexP((SDL_mutex *) mutex); } void OSystem_SDL::unlockMutex(MutexRef mutex) { SDL_mutexV((SDL_mutex *) mutex); } void OSystem_SDL::deleteMutex(MutexRef mutex) { SDL_DestroyMutex((SDL_mutex *) mutex); } #pragma mark - #pragma mark --- Audio --- #pragma mark - #if MIXER_DOUBLE_BUFFERING void OSystem_SDL::mixerProducerThread() { byte nextSoundBuffer; SDL_LockMutex(_soundMutex); while (true) { // Wait till we are allowed to produce data SDL_CondWait(_soundCond, _soundMutex); if (_soundThreadShouldQuit) break; // Generate samples and put them into the next buffer nextSoundBuffer = _activeSoundBuf ^ 1; _mixer->mixCallback(_soundBuffers[nextSoundBuffer], _soundBufSize); // Swap buffers _activeSoundBuf = nextSoundBuffer; } SDL_UnlockMutex(_soundMutex); } int SDLCALL OSystem_SDL::mixerProducerThreadEntry(void *arg) { OSystem_SDL *this_ = (OSystem_SDL *)arg; assert(this_); this_->mixerProducerThread(); return 0; } void OSystem_SDL::initThreadedMixer(Audio::MixerImpl *mixer, uint bufSize) { _soundThreadIsRunning = false; _soundThreadShouldQuit = false; // Create mutex and condition variable _soundMutex = SDL_CreateMutex(); _soundCond = SDL_CreateCond(); // Create two sound buffers _activeSoundBuf = 0; _soundBufSize = bufSize; _soundBuffers[0] = (byte *)calloc(1, bufSize); _soundBuffers[1] = (byte *)calloc(1, bufSize); _soundThreadIsRunning = true; // Finally start the thread _soundThread = SDL_CreateThread(mixerProducerThreadEntry, this); } void OSystem_SDL::deinitThreadedMixer() { // Kill thread?? _soundThread if (_soundThreadIsRunning) { // Signal the producer thread to end, and wait for it to actually finish. _soundThreadShouldQuit = true; SDL_CondBroadcast(_soundCond); SDL_WaitThread(_soundThread, NULL); // Kill the mutex & cond variables. // Attention: AT this point, the mixer callback must not be running // anymore, else we will crash! SDL_DestroyMutex(_soundMutex); SDL_DestroyCond(_soundCond); _soundThreadIsRunning = false; free(_soundBuffers[0]); free(_soundBuffers[1]); } } void OSystem_SDL::mixCallback(void *arg, byte *samples, int len) { OSystem_SDL *this_ = (OSystem_SDL *)arg; assert(this_); assert(this_->_mixer); assert((int)this_->_soundBufSize == len); // Lock mutex, to ensure our data is not overwritten by the producer thread SDL_LockMutex(this_->_soundMutex); // Copy data from the current sound buffer memcpy(samples, this_->_soundBuffers[this_->_activeSoundBuf], len); // Unlock mutex and wake up the produced thread SDL_UnlockMutex(this_->_soundMutex); SDL_CondSignal(this_->_soundCond); } #else void OSystem_SDL::mixCallback(void *sys, byte *samples, int len) { OSystem_SDL *this_ = (OSystem_SDL *)sys; assert(this_); assert(this_->_mixer); this_->_mixer->mixCallback(samples, len); } #endif void OSystem_SDL::setupMixer() { SDL_AudioSpec desired; // Determine the desired output sampling frequency. _samplesPerSec = 0; if (ConfMan.hasKey("output_rate")) _samplesPerSec = ConfMan.getInt("output_rate"); if (_samplesPerSec <= 0) _samplesPerSec = SAMPLES_PER_SEC; // Determine the sample buffer size. We want it to store enough data for // at least 1/16th of a second (though at maximum 8192 samples). Note // that it must be a power of two. So e.g. at 22050 Hz, we request a // sample buffer size of 2048. int samples = 8192; while (samples * 16 > _samplesPerSec * 2) samples >>= 1; memset(&desired, 0, sizeof(desired)); desired.freq = _samplesPerSec; desired.format = AUDIO_S16SYS; desired.channels = 2; desired.samples = (uint16)samples; desired.callback = mixCallback; desired.userdata = this; // Create the mixer instance assert(!_mixer); _mixer = new Audio::MixerImpl(this); assert(_mixer); if (SDL_OpenAudio(&desired, &_obtainedRate) != 0) { warning("Could not open audio device: %s", SDL_GetError()); _samplesPerSec = 0; _mixer->setReady(false); } else { // Note: This should be the obtained output rate, but it seems that at // least on some platforms SDL will lie and claim it did get the rate // even if it didn't. Probably only happens for "weird" rates, though. _samplesPerSec = _obtainedRate.freq; debug(1, "Output sample rate: %d Hz", _samplesPerSec); // Tell the mixer that we are ready and start the sound processing _mixer->setOutputRate(_samplesPerSec); _mixer->setReady(true); #if MIXER_DOUBLE_BUFFERING initThreadedMixer(_mixer, _obtainedRate.samples * 4); #endif // start the sound system SDL_PauseAudio(0); } } void OSystem_SDL::closeMixer() { if (_mixer) _mixer->setReady(false); SDL_CloseAudio(); delete _mixer; _mixer = 0; #if MIXER_DOUBLE_BUFFERING deinitThreadedMixer(); #endif } Audio::Mixer *OSystem_SDL::getMixer() { assert(_mixer); return _mixer; } #pragma mark - #pragma mark --- CD Audio --- #pragma mark - bool OSystem_SDL::openCD(int drive) { if (SDL_InitSubSystem(SDL_INIT_CDROM) == -1) _cdrom = NULL; else { _cdrom = SDL_CDOpen(drive); // Did it open? Check if _cdrom is NULL if (!_cdrom) { warning("Couldn't open drive: %s", SDL_GetError()); } else { _cdNumLoops = 0; _cdStopTime = 0; _cdEndTime = 0; } } return (_cdrom != NULL); } void OSystem_SDL::stopCD() { /* Stop CD Audio in 1/10th of a second */ _cdStopTime = SDL_GetTicks() + 100; _cdNumLoops = 0; } void OSystem_SDL::playCD(int track, int num_loops, int start_frame, int duration) { if (!num_loops && !start_frame) return; if (!_cdrom) return; if (duration > 0) duration += 5; _cdTrack = track; _cdNumLoops = num_loops; _cdStartFrame = start_frame; SDL_CDStatus(_cdrom); if (start_frame == 0 && duration == 0) SDL_CDPlayTracks(_cdrom, track, 0, 1, 0); else SDL_CDPlayTracks(_cdrom, track, start_frame, 0, duration); _cdDuration = duration; _cdStopTime = 0; _cdEndTime = SDL_GetTicks() + _cdrom->track[track].length * 1000 / CD_FPS; } bool OSystem_SDL::pollCD() { if (!_cdrom) return false; return (_cdNumLoops != 0 && (SDL_GetTicks() < _cdEndTime || SDL_CDStatus(_cdrom) == CD_PLAYING)); } void OSystem_SDL::updateCD() { if (!_cdrom) return; if (_cdStopTime != 0 && SDL_GetTicks() >= _cdStopTime) { SDL_CDStop(_cdrom); _cdNumLoops = 0; _cdStopTime = 0; return; } if (_cdNumLoops == 0 || SDL_GetTicks() < _cdEndTime) return; if (_cdNumLoops != 1 && SDL_CDStatus(_cdrom) != CD_STOPPED) { // Wait another second for it to be done _cdEndTime += 1000; return; } if (_cdNumLoops > 0) _cdNumLoops--; if (_cdNumLoops != 0) { if (_cdStartFrame == 0 && _cdDuration == 0) SDL_CDPlayTracks(_cdrom, _cdTrack, 0, 1, 0); else SDL_CDPlayTracks(_cdrom, _cdTrack, _cdStartFrame, 0, _cdDuration); _cdEndTime = SDL_GetTicks() + _cdrom->track[_cdTrack].length * 1000 / CD_FPS; } }