diff options
Diffstat (limited to 'backends/platform/sdl')
| -rw-r--r-- | backends/platform/sdl/build.rules | 9 | ||||
| -rw-r--r-- | backends/platform/sdl/events.cpp | 510 | ||||
| -rw-r--r-- | backends/platform/sdl/graphics.cpp | 1745 | ||||
| -rw-r--r-- | backends/platform/sdl/module.mk | 12 | ||||
| -rw-r--r-- | backends/platform/sdl/sdl-common.h | 392 | ||||
| -rw-r--r-- | backends/platform/sdl/sdl.cpp | 488 |
6 files changed, 3156 insertions, 0 deletions
diff --git a/backends/platform/sdl/build.rules b/backends/platform/sdl/build.rules new file mode 100644 index 0000000000..14cfe0ebdf --- /dev/null +++ b/backends/platform/sdl/build.rules @@ -0,0 +1,9 @@ +# Build settings for the SDL backend +MODULES += backends/sdl +DEFINES += -DUNIX +INCLUDES += `sdl-config --cflags` +LIBS += `sdl-config --libs` + +# Uncomment this in addition to the above if you compile on Mac OS X +# DEFINES += -DMACOSX +# LIBS += -framework QuickTime -framework AudioUnit diff --git a/backends/platform/sdl/events.cpp b/backends/platform/sdl/events.cpp new file mode 100644 index 0000000000..4fa02907db --- /dev/null +++ b/backends/platform/sdl/events.cpp @@ -0,0 +1,510 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +#include "backends/platform/sdl/sdl-common.h" +#include "common/util.h" + +// FIXME move joystick defines out and replace with confile file options +// we should really allow users to map any key to a joystick button +#define JOY_DEADZONE 3200 + +#ifndef __SYMBIAN32__ // Symbian wants dialog joystick i.e cursor for movement/selection + #define JOY_ANALOG +#endif + +// #define JOY_INVERT_Y +#define JOY_XAXIS 0 +#define JOY_YAXIS 1 +// buttons +#define JOY_BUT_LMOUSE 0 +#define JOY_BUT_RMOUSE 2 +#define JOY_BUT_ESCAPE 3 +#define JOY_BUT_PERIOD 1 +#define JOY_BUT_SPACE 4 +#define JOY_BUT_F5 5 + + + + +static int mapKey(SDLKey key, SDLMod mod, Uint16 unicode) +{ + if (key >= SDLK_F1 && key <= SDLK_F9) { + return key - SDLK_F1 + 315; + } else if (key >= SDLK_KP0 && key <= SDLK_KP9) { + return key - SDLK_KP0 + '0'; + } else if (key >= SDLK_UP && key <= SDLK_PAGEDOWN) { + return key; + } else if (unicode) { + return unicode; + } else if (key >= 'a' && key <= 'z' && mod & KMOD_SHIFT) { + return key & ~0x20; + } else if (key >= SDLK_NUMLOCK && key <= SDLK_EURO) { + return 0; + } + return key; +} + +void OSystem_SDL::fillMouseEvent(Event &event, int x, int y) { + event.mouse.x = x; + event.mouse.y = y; + + // Update the "keyboard mouse" coords + _km.x = x; + _km.y = y; + + // Adjust for the screen scaling + if (!_overlayVisible) { + event.mouse.x /= _scaleFactor; + event.mouse.y /= _scaleFactor; + if (_adjustAspectRatio) + event.mouse.y = aspect2Real(event.mouse.y); + } +} + +void OSystem_SDL::handleKbdMouse() { + uint32 curTime = getMillis(); + if (curTime >= _km.last_time + _km.delay_time) { + _km.last_time = curTime; + if (_km.x_down_count == 1) { + _km.x_down_time = curTime; + _km.x_down_count = 2; + } + if (_km.y_down_count == 1) { + _km.y_down_time = curTime; + _km.y_down_count = 2; + } + + if (_km.x_vel || _km.y_vel) { + if (_km.x_down_count) { + if (curTime > _km.x_down_time + _km.delay_time * 12) { + if (_km.x_vel > 0) + _km.x_vel++; + else + _km.x_vel--; + } else if (curTime > _km.x_down_time + _km.delay_time * 8) { + if (_km.x_vel > 0) + _km.x_vel = 5; + else + _km.x_vel = -5; + } + } + if (_km.y_down_count) { + if (curTime > _km.y_down_time + _km.delay_time * 12) { + if (_km.y_vel > 0) + _km.y_vel++; + else + _km.y_vel--; + } else if (curTime > _km.y_down_time + _km.delay_time * 8) { + if (_km.y_vel > 0) + _km.y_vel = 5; + else + _km.y_vel = -5; + } + } + + _km.x += _km.x_vel; + _km.y += _km.y_vel; + + if (_km.x < 0) { + _km.x = 0; + _km.x_vel = -1; + _km.x_down_count = 1; + } else if (_km.x > _km.x_max) { + _km.x = _km.x_max; + _km.x_vel = 1; + _km.x_down_count = 1; + } + + if (_km.y < 0) { + _km.y = 0; + _km.y_vel = -1; + _km.y_down_count = 1; + } else if (_km.y > _km.y_max) { + _km.y = _km.y_max; + _km.y_vel = 1; + _km.y_down_count = 1; + } + + SDL_WarpMouse(_km.x, _km.y); + } + } +} + +static byte SDLModToOSystemKeyFlags(SDLMod mod) { + byte b = 0; +#ifdef LINUPY + // Yopy has no ALT key, steal the SHIFT key + // (which isn't used much anyway) + if (mod & KMOD_SHIFT) + b |= OSystem::KBD_ALT; +#else + if (mod & KMOD_SHIFT) + b |= OSystem::KBD_SHIFT; + if (mod & KMOD_ALT) + b |= OSystem::KBD_ALT; +#endif + if (mod & KMOD_CTRL) + b |= OSystem::KBD_CTRL; + + return b; +} + +bool OSystem_SDL::pollEvent(Event &event) { + SDL_Event ev; + int axis; + byte b = 0; + + handleKbdMouse(); + + // If the screen mode changed, send an EVENT_SCREEN_CHANGED + if (_modeChanged) { + _modeChanged = false; + event.type = EVENT_SCREEN_CHANGED; + return true; + } + + while(SDL_PollEvent(&ev)) { + switch(ev.type) { + case SDL_KEYDOWN:{ + b = event.kbd.flags = SDLModToOSystemKeyFlags(SDL_GetModState()); + + // Alt-Return and Alt-Enter toggle full screen mode + if (b == KBD_ALT && (ev.key.keysym.sym == SDLK_RETURN + || ev.key.keysym.sym == SDLK_KP_ENTER)) { + setFullscreenMode(!_fullscreen); +#ifdef USE_OSD + if (_fullscreen) + displayMessageOnOSD("Fullscreen mode"); + else + displayMessageOnOSD("Windowed mode"); +#endif + + break; + } + + // Alt-S: Create a screenshot + if (b == KBD_ALT && ev.key.keysym.sym == 's') { + char filename[20]; + + for (int n = 0;; n++) { + SDL_RWops *file; + + sprintf(filename, "scummvm%05d.bmp", n); + file = SDL_RWFromFile(filename, "r"); + if (!file) + break; + SDL_RWclose(file); + } + if (saveScreenshot(filename)) + printf("Saved '%s'\n", filename); + else + printf("Could not save screenshot!\n"); + break; + } + + // Ctrl-m toggles mouse capture + if (b == KBD_CTRL && ev.key.keysym.sym == 'm') { + toggleMouseGrab(); + break; + } + +#ifdef MACOSX + // On Macintosh', Cmd-Q quits + if ((ev.key.keysym.mod & KMOD_META) && ev.key.keysym.sym == 'q') { + event.type = EVENT_QUIT; + return true; + } +#elif defined(UNIX) + // On other unices, Control-Q quits + if ((ev.key.keysym.mod & KMOD_CTRL) && ev.key.keysym.sym == 'q') { + event.type = EVENT_QUIT; + return true; + } +#else + // Ctrl-z and Alt-X quit + if ((b == KBD_CTRL && ev.key.keysym.sym == 'z') || (b == KBD_ALT && ev.key.keysym.sym == 'x')) { + event.type = EVENT_QUIT; + return true; + } +#endif + + // Ctrl-Alt-<key> will change the GFX mode + if ((b & (KBD_CTRL|KBD_ALT)) == (KBD_CTRL|KBD_ALT)) { + + handleScalerHotkeys(ev.key); + break; + } + const bool event_complete = remapKey(ev,event); + + if (event_complete) + return true; + + event.type = EVENT_KEYDOWN; + event.kbd.keycode = ev.key.keysym.sym; + event.kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode); + + return true; + } + case SDL_KEYUP: + { + const bool event_complete = remapKey(ev,event); + + if (event_complete) + return true; + + event.type = EVENT_KEYUP; + event.kbd.keycode = ev.key.keysym.sym; + event.kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode); + b = event.kbd.flags = SDLModToOSystemKeyFlags(SDL_GetModState()); + + // Ctrl-Alt-<key> will change the GFX mode + if ((b & (KBD_CTRL|KBD_ALT)) == (KBD_CTRL|KBD_ALT)) { + // Swallow these key up events + break; + } + + return true; + } + case SDL_MOUSEMOTION: + event.type = EVENT_MOUSEMOVE; + fillMouseEvent(event, ev.motion.x, ev.motion.y); + + setMousePos(event.mouse.x, event.mouse.y); + return true; + + case SDL_MOUSEBUTTONDOWN: + if (ev.button.button == SDL_BUTTON_LEFT) + event.type = EVENT_LBUTTONDOWN; + else if (ev.button.button == SDL_BUTTON_RIGHT) + event.type = EVENT_RBUTTONDOWN; +#if defined(SDL_BUTTON_WHEELUP) && defined(SDL_BUTTON_WHEELDOWN) + else if (ev.button.button == SDL_BUTTON_WHEELUP) + event.type = EVENT_WHEELUP; + else if (ev.button.button == SDL_BUTTON_WHEELDOWN) + event.type = EVENT_WHEELDOWN; +#endif + else + break; + + fillMouseEvent(event, ev.button.x, ev.button.y); + + return true; + + case SDL_MOUSEBUTTONUP: + if (ev.button.button == SDL_BUTTON_LEFT) + event.type = EVENT_LBUTTONUP; + else if (ev.button.button == SDL_BUTTON_RIGHT) + event.type = EVENT_RBUTTONUP; + else + break; + fillMouseEvent(event, ev.button.x, ev.button.y); + + return true; + + case SDL_JOYBUTTONDOWN: + if (ev.jbutton.button == JOY_BUT_LMOUSE) { + event.type = EVENT_LBUTTONDOWN; + fillMouseEvent(event, _km.x, _km.y); + } else if (ev.jbutton.button == JOY_BUT_RMOUSE) { + event.type = EVENT_RBUTTONDOWN; + fillMouseEvent(event, _km.x, _km.y); + } else { + event.type = EVENT_KEYDOWN; + switch (ev.jbutton.button) { + case JOY_BUT_ESCAPE: + event.kbd.keycode = SDLK_ESCAPE; + event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0); + break; + case JOY_BUT_PERIOD: + event.kbd.keycode = SDLK_PERIOD; + event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0); + break; + case JOY_BUT_SPACE: + event.kbd.keycode = SDLK_SPACE; + event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0); + break; + case JOY_BUT_F5: + event.kbd.keycode = SDLK_F5; + event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0); + break; + } + } + return true; + + case SDL_JOYBUTTONUP: + if (ev.jbutton.button == JOY_BUT_LMOUSE) { + event.type = EVENT_LBUTTONUP; + fillMouseEvent(event, _km.x, _km.y); + } else if (ev.jbutton.button == JOY_BUT_RMOUSE) { + event.type = EVENT_RBUTTONUP; + fillMouseEvent(event, _km.x, _km.y); + } else { + event.type = EVENT_KEYUP; + switch (ev.jbutton.button) { + case JOY_BUT_ESCAPE: + event.kbd.keycode = SDLK_ESCAPE; + event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0); + break; + case JOY_BUT_PERIOD: + event.kbd.keycode = SDLK_PERIOD; + event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0); + break; + case JOY_BUT_SPACE: + event.kbd.keycode = SDLK_SPACE; + event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0); + break; + case JOY_BUT_F5: + event.kbd.keycode = SDLK_F5; + event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0); + break; + } + } + return true; + + case SDL_JOYAXISMOTION: + axis = ev.jaxis.value; + if ( axis > JOY_DEADZONE) { + axis -= JOY_DEADZONE; + event.type = EVENT_MOUSEMOVE; + } else if ( axis < -JOY_DEADZONE ) { + axis += JOY_DEADZONE; + event.type = EVENT_MOUSEMOVE; + } else + axis = 0; + + if ( ev.jaxis.axis == JOY_XAXIS) { +#ifdef JOY_ANALOG + _km.x_vel = axis/2000; + _km.x_down_count = 0; +#else + if (axis != 0) { + _km.x_vel = (axis > 0) ? 1:-1; + _km.x_down_count = 1; + } else { + _km.x_vel = 0; + _km.x_down_count = 0; + } +#endif + + } else if (ev.jaxis.axis == JOY_YAXIS) { +#ifndef JOY_INVERT_Y + axis = -axis; +#endif +#ifdef JOY_ANALOG + _km.y_vel = -axis / 2000; + _km.y_down_count = 0; +#else + if (axis != 0) { + _km.y_vel = (-axis > 0) ? 1: -1; + _km.y_down_count = 1; + } else { + _km.y_vel = 0; + _km.y_down_count = 0; + } +#endif + } + + fillMouseEvent(event, _km.x, _km.y); + + return true; + + case SDL_VIDEOEXPOSE: + _forceFull = true; + break; + + case SDL_QUIT: + event.type = EVENT_QUIT; + return true; + } + } + return false; +} + +bool OSystem_SDL::remapKey(SDL_Event &ev,Event &event) { +#ifdef LINUPY + // On Yopy map the End button to quit + if ((ev.key.keysym.sym == 293)) { + event.type = EVENT_QUIT; + return true; + } + // Map menu key to f5 (scumm menu) + if (ev.key.keysym.sym == 306) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_F5; + event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0); + return true; + } + // Map action key to action + if (ev.key.keysym.sym == 291) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_TAB; + event.kbd.ascii = mapKey(SDLK_TAB, ev.key.keysym.mod, 0); + return true; + } + // Map OK key to skip cinematic + if (ev.key.keysym.sym == 292) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_ESCAPE; + event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0); + return true; + } +#endif + +#ifdef QTOPIA + // Quit on fn+backspace on zaurus + if (ev.key.keysym.sym == 127) { + event.type = EVENT_QUIT; + return true; + } + + // Map menu key (f11) to f5 (scumm menu) + if (ev.key.keysym.sym == SDLK_F11) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_F5; + event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0); + } + // Nap center (space) to tab (default action ) + // I wanted to map the calendar button but the calendar comes up + // + else if (ev.key.keysym.sym == SDLK_SPACE) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_TAB; + event.kbd.ascii = mapKey(SDLK_TAB, ev.key.keysym.mod, 0); + } + // Since we stole space (pause) above we'll rebind it to the tab key on the keyboard + else if (ev.key.keysym.sym == SDLK_TAB) { + event.type = EVENT_KEYDOWN; + event.kbd.keycode = SDLK_SPACE; + event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0); + } else { + // Let the events fall through if we didn't change them, this may not be the best way to + // set it up, but i'm not sure how sdl would like it if we let if fall through then redid it though. + // and yes i have an huge terminal size so i dont wrap soon enough. + event.type = EVENT_KEYDOWN; + event.kbd.keycode = ev.key.keysym.sym; + event.kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode); + } +#endif + return false; +} + diff --git a/backends/platform/sdl/graphics.cpp b/backends/platform/sdl/graphics.cpp new file mode 100644 index 0000000000..eb560c5769 --- /dev/null +++ b/backends/platform/sdl/graphics.cpp @@ -0,0 +1,1745 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +#include "backends/platform/sdl/sdl-common.h" +#include "common/util.h" +#include "graphics/font.h" +#include "graphics/fontman.h" +#include "graphics/scaler.h" +#include "graphics/surface.h" + +static const OSystem::GraphicsMode s_supportedGraphicsModes[] = { + {"1x", "Normal (no scaling)", GFX_NORMAL}, + {"2x", "2x", GFX_DOUBLESIZE}, + {"3x", "3x", GFX_TRIPLESIZE}, + {"2xsai", "2xSAI", GFX_2XSAI}, + {"super2xsai", "Super2xSAI", GFX_SUPER2XSAI}, + {"supereagle", "SuperEagle", GFX_SUPEREAGLE}, + {"advmame2x", "AdvMAME2x", GFX_ADVMAME2X}, + {"advmame3x", "AdvMAME3x", GFX_ADVMAME3X}, +#ifndef DISABLE_HQ_SCALERS + {"hq2x", "HQ2x", GFX_HQ2X}, + {"hq3x", "HQ3x", GFX_HQ3X}, +#endif + {"tv2x", "TV2x", GFX_TV2X}, + {"dotmatrix", "DotMatrix", GFX_DOTMATRIX}, + {0, 0, 0} +}; + +// Table of relative scalers magnitudes +// [definedScale - 1][_scaleFactor - 1] +static ScalerProc *scalersMagn[3][3] = { +#ifndef DISABLE_SCALERS + { Normal1x, AdvMame2x, AdvMame3x }, + { Normal1x, Normal1x, Normal1o5x }, + { Normal1x, Normal1x, Normal1x } +#else // remove dependencies on other scalers + { Normal1x, Normal1x, Normal1x }, + { Normal1x, Normal1x, Normal1x }, + { Normal1x, Normal1x, Normal1x } +#endif +}; + +static const int s_gfxModeSwitchTable[][4] = { + { GFX_NORMAL, GFX_DOUBLESIZE, GFX_TRIPLESIZE, -1 }, + { GFX_NORMAL, GFX_ADVMAME2X, GFX_ADVMAME3X, -1 }, + { GFX_NORMAL, GFX_HQ2X, GFX_HQ3X, -1 }, + { GFX_NORMAL, GFX_2XSAI, -1, -1 }, + { GFX_NORMAL, GFX_SUPER2XSAI, -1, -1 }, + { GFX_NORMAL, GFX_SUPEREAGLE, -1, -1 }, + { GFX_NORMAL, GFX_TV2X, -1, -1 }, + { GFX_NORMAL, GFX_DOTMATRIX, -1, -1 } + }; + +#ifndef DISABLE_SCALERS +static int cursorStretch200To240(uint8 *buf, uint32 pitch, int width, int height, int srcX, int srcY, int origSrcY); +#endif + +const OSystem::GraphicsMode *OSystem_SDL::getSupportedGraphicsModes() const { + return s_supportedGraphicsModes; +} + +int OSystem_SDL::getDefaultGraphicsMode() const { + return GFX_DOUBLESIZE; +} + +void OSystem_SDL::beginGFXTransaction(void) { + assert (_transactionMode == kTransactionNone); + + _transactionMode = kTransactionActive; + + _transactionDetails.modeChanged = false; + _transactionDetails.sizeChanged = false; + _transactionDetails.arChanged = false; + _transactionDetails.fsChanged = false; + + _transactionDetails.needHotswap = false; + _transactionDetails.needUpdatescreen = false; + _transactionDetails.needUnload = false; + + _transactionDetails.normal1xScaler = false; +} + +void OSystem_SDL::endGFXTransaction(void) { + // for each engine we run initCommonGFX() as first thing in the transaction + // and initSize() is called later. If user runs launcher at 320x200 with + // 2x overlay, setting to Nomral1x sclaler in that case will be suppressed + // and backend is forced to 2x + // + // This leads to bad results such as 1280x960 window for 640x480 engines. + // To prevent that we rerun setGraphicsMode() if there was 1x scaler request + if (_transactionDetails.normal1xScaler) + setGraphicsMode(GFX_NORMAL); + + assert (_transactionMode == kTransactionActive); + + _transactionMode = kTransactionCommit; + if (_transactionDetails.modeChanged) + setGraphicsMode(_transactionDetails.mode); + + if (_transactionDetails.sizeChanged) + initSize(_transactionDetails.w, _transactionDetails.h); + + if (_transactionDetails.arChanged) + setAspectRatioCorrection(_transactionDetails.ar); + + if (_transactionDetails.needUnload) { + unloadGFXMode(); + loadGFXMode(); + clearOverlay(); + } else { + if (!_transactionDetails.fsChanged) { + if (_transactionDetails.needHotswap) + hotswapGFXMode(); + else if (_transactionDetails.needUpdatescreen) + internUpdateScreen(); + } + } + + if (_transactionDetails.fsChanged) + setFullscreenMode(_transactionDetails.fs); + + _transactionMode = kTransactionNone; +} + +bool OSystem_SDL::setGraphicsMode(int mode) { + Common::StackLock lock(_graphicsMutex); + + int newScaleFactor = 1; + ScalerProc *newScalerProc; + + switch(mode) { + case GFX_NORMAL: + newScaleFactor = 1; + newScalerProc = Normal1x; + break; +#ifndef DISABLE_SCALERS + case GFX_DOUBLESIZE: + newScaleFactor = 2; + newScalerProc = Normal2x; + break; + case GFX_TRIPLESIZE: + newScaleFactor = 3; + newScalerProc = Normal3x; + break; + + case GFX_2XSAI: + newScaleFactor = 2; + newScalerProc = _2xSaI; + break; + case GFX_SUPER2XSAI: + newScaleFactor = 2; + newScalerProc = Super2xSaI; + break; + case GFX_SUPEREAGLE: + newScaleFactor = 2; + newScalerProc = SuperEagle; + break; + case GFX_ADVMAME2X: + newScaleFactor = 2; + newScalerProc = AdvMame2x; + break; + case GFX_ADVMAME3X: + newScaleFactor = 3; + newScalerProc = AdvMame3x; + break; +#ifndef DISABLE_HQ_SCALERS + case GFX_HQ2X: + newScaleFactor = 2; + newScalerProc = HQ2x; + break; + case GFX_HQ3X: + newScaleFactor = 3; + newScalerProc = HQ3x; + break; +#endif + case GFX_TV2X: + newScaleFactor = 2; + newScalerProc = TV2x; + break; + case GFX_DOTMATRIX: + newScaleFactor = 2; + newScalerProc = DotMatrix; + break; +#endif // DISABLE_SCALERS + + default: + warning("unknown gfx mode %d", mode); + return false; + } + + _transactionDetails.normal1xScaler = (mode == GFX_NORMAL); + + _mode = mode; + _scalerProc = newScalerProc; + + if (_transactionMode == kTransactionActive) { + _transactionDetails.mode = mode; + _transactionDetails.modeChanged = true; + + if (newScaleFactor != _scaleFactor) { + _transactionDetails.needHotswap = true; + _scaleFactor = newScaleFactor; + } + + _transactionDetails.needUpdatescreen = true; + + return true; + } + + // NOTE: This should not be executed at transaction commit + // Otherwise there is some unsolicited setGraphicsMode() call + // which should be properly removed + if (newScaleFactor != _scaleFactor) { + assert(_transactionMode != kTransactionCommit); + + _scaleFactor = newScaleFactor; + hotswapGFXMode(); + } + + // Determine the "scaler type", i.e. essentially an index into the + // s_gfxModeSwitchTable array defined in events.cpp. + if (_mode != GFX_NORMAL) { + for (int i = 0; i < ARRAYSIZE(s_gfxModeSwitchTable); i++) { + if (s_gfxModeSwitchTable[i][1] == _mode || s_gfxModeSwitchTable[i][2] == _mode) { + _scalerType = i; + break; + } + } + } + + if (!_screen) + return true; + + // Blit everything to the screen + _forceFull = true; + + // Even if the old and new scale factors are the same, we may have a + // different scaler for the cursor now. + blitCursor(); + + if (_transactionMode != kTransactionCommit) + internUpdateScreen(); + + // Make sure that an EVENT_SCREEN_CHANGED gets sent later + _modeChanged = true; + + return true; +} + +int OSystem_SDL::getGraphicsMode() const { + assert (_transactionMode == kTransactionNone); + return _mode; +} + +void OSystem_SDL::initSize(uint w, uint h) { + // Avoid redundant res changes + if ((int)w == _screenWidth && (int)h == _screenHeight && + _transactionMode != kTransactionCommit) + return; + + _screenWidth = w; + _screenHeight = h; + + _cksumNum = (_screenWidth * _screenHeight / (8 * 8)); + + if (_transactionMode == kTransactionActive) { + _transactionDetails.w = w; + _transactionDetails.h = h; + _transactionDetails.sizeChanged = true; + + _transactionDetails.needUnload = true; + + return; + } + + free(_dirtyChecksums); + _dirtyChecksums = (uint32 *)calloc(_cksumNum * 2, sizeof(uint32)); + + if (_transactionMode != kTransactionCommit) { + unloadGFXMode(); + loadGFXMode(); + + // if initSize() gets called in the middle, overlay is not transparent + clearOverlay(); + } +} + +void OSystem_SDL::loadGFXMode() { + assert(_inited); + _forceFull = true; + _modeFlags |= DF_UPDATE_EXPAND_1_PIXEL; + + int hwW, hwH; + +#ifndef __MAEMO__ + _overlayWidth = _screenWidth * _scaleFactor; + _overlayHeight = _screenHeight * _scaleFactor; + + if (_screenHeight != 200) + _adjustAspectRatio = false; + + if (_adjustAspectRatio) + _overlayHeight = real2Aspect(_overlayHeight); + + hwW = _screenWidth * _scaleFactor; + hwH = effectiveScreenHeight(); +#else + hwW = _overlayWidth; + hwH = _overlayHeight; +#endif + + // + // Create the surface that contains the 8 bit game data + // + _screen = SDL_CreateRGBSurface(SDL_SWSURFACE, _screenWidth, _screenHeight, 8, 0, 0, 0, 0); + if (_screen == NULL) + error("allocating _screen failed"); + + // + // Create the surface that contains the scaled graphics in 16 bit mode + // + + _hwscreen = SDL_SetVideoMode(hwW, hwH, 16, + _fullscreen ? (SDL_FULLSCREEN|SDL_SWSURFACE) : SDL_SWSURFACE + ); + if (_hwscreen == NULL) { + // DON'T use error(), as this tries to bring up the debug + // console, which WON'T WORK now that _hwscreen is hosed. + + // FIXME: We should be able to continue the game without + // shutting down or bringing up the debug console, but at + // this point we've already screwed up all our member vars. + // We need to find a way to call SDL_SetVideoMode *before* + // that happens and revert to all the old settings if we + // can't pull off the switch to the new settings. + // + // Fingolfin says: the "easy" way to do that is not to modify + // the member vars before we are sure everything is fine. Think + // of "transactions, commit, rollback" style... we use local vars + // in place of the member vars, do everything etc. etc.. In case + // of a failure, rollback is trivial. Only if everything worked fine + // do we "commit" the changed values to the member vars. + warning("SDL_SetVideoMode says we can't switch to that mode (%s)", SDL_GetError()); + quit(); + } + + // + // Create the surface used for the graphics in 16 bit before scaling, and also the overlay + // + + // Distinguish 555 and 565 mode + if (_hwscreen->format->Rmask == 0x7C00) + InitScalers(555); + else + InitScalers(565); + + // Need some extra bytes around when using 2xSaI + _tmpscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _screenWidth + 3, _screenHeight + 3, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_tmpscreen == NULL) + error("allocating _tmpscreen failed"); + + _overlayscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _overlayWidth, _overlayHeight, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_overlayscreen == NULL) + error("allocating _overlayscreen failed"); + + _tmpscreen2 = SDL_CreateRGBSurface(SDL_SWSURFACE, _overlayWidth + 3, _overlayHeight + 3, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_tmpscreen2 == NULL) + error("allocating _tmpscreen2 failed"); + +#ifdef USE_OSD + _osdSurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, + _hwscreen->w, + _hwscreen->h, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + if (_osdSurface == NULL) + error("allocating _osdSurface failed"); + SDL_SetColorKey(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, kOSDColorKey); +#endif + + // keyboard cursor control, some other better place for it? + _km.x_max = _screenWidth * _scaleFactor - 1; + _km.y_max = effectiveScreenHeight() - 1; + _km.delay_time = 25; + _km.last_time = 0; +} + +void OSystem_SDL::unloadGFXMode() { + if (_screen) { + SDL_FreeSurface(_screen); + _screen = NULL; + } + + if (_hwscreen) { + SDL_FreeSurface(_hwscreen); + _hwscreen = NULL; + } + + if (_tmpscreen) { + SDL_FreeSurface(_tmpscreen); + _tmpscreen = NULL; + } + + if (_tmpscreen2) { + SDL_FreeSurface(_tmpscreen2); + _tmpscreen2 = NULL; + } + + if (_overlayscreen) { + SDL_FreeSurface(_overlayscreen); + _overlayscreen = NULL; + } + +#ifdef USE_OSD + if (_osdSurface) { + SDL_FreeSurface(_osdSurface); + _osdSurface = NULL; + } +#endif +} + +void OSystem_SDL::hotswapGFXMode() { + if (!_screen) + return; + + // Keep around the old _screen & _overlayscreen so we can restore the screen data + // after the mode switch. + SDL_Surface *old_screen = _screen; + SDL_Surface *old_overlayscreen = _overlayscreen; + + // Release the HW screen surface + SDL_FreeSurface(_hwscreen); + + SDL_FreeSurface(_tmpscreen); + SDL_FreeSurface(_tmpscreen2); + +#ifdef USE_OSD + // Release the OSD surface + SDL_FreeSurface(_osdSurface); +#endif + + // Setup the new GFX mode + loadGFXMode(); + + // reset palette + SDL_SetColors(_screen, _currentPalette, 0, 256); + + // Restore old screen content + SDL_BlitSurface(old_screen, NULL, _screen, NULL); + SDL_BlitSurface(old_overlayscreen, NULL, _overlayscreen, NULL); + + // Free the old surfaces + SDL_FreeSurface(old_screen); + SDL_FreeSurface(old_overlayscreen); + + // Update cursor to new scale + blitCursor(); + + // Blit everything to the screen + internUpdateScreen(); + + // Make sure that an EVENT_SCREEN_CHANGED gets sent later + _modeChanged = true; +} + +void OSystem_SDL::updateScreen() { + assert (_transactionMode == kTransactionNone); + + Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends + + internUpdateScreen(); +} + +void OSystem_SDL::internUpdateScreen() { + SDL_Surface *srcSurf, *origSurf; + int height, width; + ScalerProc *scalerProc; + int scale1; + +#if defined (DEBUG) && ! defined(_WIN32_WCE) // definitions not available for non-DEBUG here. (needed this to compile in SYMBIAN32 & linux?) + assert(_hwscreen != NULL); + assert(_hwscreen->map->sw_data != NULL); +#endif + + // If the shake position changed, fill the dirty area with blackness + if (_currentShakePos != _newShakePos) { + SDL_Rect blackrect = {0, 0, _screenWidth * _scaleFactor, _newShakePos * _scaleFactor}; + + if (_adjustAspectRatio && !_overlayVisible) + blackrect.h = real2Aspect(blackrect.h - 1) + 1; + + SDL_FillRect(_hwscreen, &blackrect, 0); + + _currentShakePos = _newShakePos; + + _forceFull = true; + } + + // Check whether the palette was changed in the meantime and update the + // screen surface accordingly. + if (_paletteDirtyEnd != 0) { + SDL_SetColors(_screen, _currentPalette + _paletteDirtyStart, + _paletteDirtyStart, + _paletteDirtyEnd - _paletteDirtyStart); + + _paletteDirtyEnd = 0; + + _forceFull = true; + } + +#ifdef USE_OSD + // OSD visible (i.e. non-transparent)? + if (_osdAlpha != SDL_ALPHA_TRANSPARENT) { + // Updated alpha value + const int diff = SDL_GetTicks() - _osdFadeStartTime; + if (diff > 0) { + if (diff >= kOSDFadeOutDuration) { + // Back to full transparency + _osdAlpha = SDL_ALPHA_TRANSPARENT; + } else { + // Do a linear fade out... + const int startAlpha = SDL_ALPHA_TRANSPARENT + kOSDInitialAlpha * (SDL_ALPHA_OPAQUE - SDL_ALPHA_TRANSPARENT) / 100; + _osdAlpha = startAlpha + diff * (SDL_ALPHA_TRANSPARENT - startAlpha) / kOSDFadeOutDuration; + } + SDL_SetAlpha(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, _osdAlpha); + _forceFull = true; + } + } +#endif + + if (!_overlayVisible) { + origSurf = _screen; + srcSurf = _tmpscreen; + width = _screenWidth; + height = _screenHeight; + scalerProc = _scalerProc; + scale1 = _scaleFactor; + } else { + origSurf = _overlayscreen; + srcSurf = _tmpscreen2; + width = _overlayWidth; + height = _overlayHeight; + scalerProc = Normal1x; + + scale1 = 1; + } + + // Force a full redraw if requested + if (_forceFull) { + _numDirtyRects = 1; + _dirtyRectList[0].x = 0; + _dirtyRectList[0].y = 0; + _dirtyRectList[0].w = width; + _dirtyRectList[0].h = height; + } else + undrawMouse(); + + // Only draw anything if necessary + if (_numDirtyRects > 0) { + + SDL_Rect *r; + SDL_Rect dst; + uint32 srcPitch, dstPitch; + SDL_Rect *lastRect = _dirtyRectList + _numDirtyRects; + + if (scalerProc == Normal1x && !_adjustAspectRatio && 0) { + for (r = _dirtyRectList; r != lastRect; ++r) { + dst = *r; + + dst.y += _currentShakePos; + if (SDL_BlitSurface(origSurf, r, _hwscreen, &dst) != 0) + error("SDL_BlitSurface failed: %s", SDL_GetError()); + } + } else { + for (r = _dirtyRectList; r != lastRect; ++r) { + dst = *r; + dst.x++; // Shift rect by one since 2xSai needs to acces the data around + dst.y++; // any pixel to scale it, and we want to avoid mem access crashes. + + if (SDL_BlitSurface(origSurf, r, srcSurf, &dst) != 0) + error("SDL_BlitSurface failed: %s", SDL_GetError()); + } + + SDL_LockSurface(srcSurf); + SDL_LockSurface(_hwscreen); + + srcPitch = srcSurf->pitch; + dstPitch = _hwscreen->pitch; + + for (r = _dirtyRectList; r != lastRect; ++r) { + register int dst_y = r->y + _currentShakePos; + register int dst_h = 0; + register int orig_dst_y = 0; + register int rx1 = r->x * scale1; + + if (dst_y < height) { + dst_h = r->h; + if (dst_h > height - dst_y) + dst_h = height - dst_y; + + orig_dst_y = dst_y; + dst_y = dst_y * scale1; + + if (_adjustAspectRatio && !_overlayVisible) + dst_y = real2Aspect(dst_y); + + assert(scalerProc != NULL); + scalerProc((byte *)srcSurf->pixels + (r->x * 2 + 2) + (r->y + 1) * srcPitch, srcPitch, + (byte *)_hwscreen->pixels + rx1 * 2 + dst_y * dstPitch, dstPitch, r->w, dst_h); + } + + r->x = rx1; + r->y = dst_y; + r->w = r->w * scale1; + r->h = dst_h * scale1; + +#ifndef DISABLE_SCALERS + if (_adjustAspectRatio && orig_dst_y < height && !_overlayVisible) + r->h = stretch200To240((uint8 *) _hwscreen->pixels, dstPitch, r->w, r->h, r->x, r->y, orig_dst_y * scale1); +#endif + } + SDL_UnlockSurface(srcSurf); + SDL_UnlockSurface(_hwscreen); + } + + // Readjust the dirty rect list in case we are doing a full update. + // This is necessary if shaking is active. + if (_forceFull) { + _dirtyRectList[0].y = 0; + _dirtyRectList[0].h = effectiveScreenHeight(); + } + + drawMouse(); + +#ifdef USE_OSD + if (_osdAlpha != SDL_ALPHA_TRANSPARENT) { + SDL_BlitSurface(_osdSurface, 0, _hwscreen, 0); + } +#endif + // Finally, blit all our changes to the screen + SDL_UpdateRects(_hwscreen, _numDirtyRects, _dirtyRectList); + } else { + drawMouse(); + if (_numDirtyRects) + SDL_UpdateRects(_hwscreen, _numDirtyRects, _dirtyRectList); + } + + _numDirtyRects = 0; + _forceFull = false; +} + +bool OSystem_SDL::saveScreenshot(const char *filename) { + assert(_hwscreen != NULL); + + Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends + return SDL_SaveBMP(_hwscreen, filename) == 0; +} + +void OSystem_SDL::setFullscreenMode(bool enable) { + Common::StackLock lock(_graphicsMutex); + + if (_fullscreen != enable || _transactionMode == kTransactionCommit) { + assert(_hwscreen != 0); + _fullscreen = enable; + + if (_transactionMode == kTransactionActive) { + _transactionDetails.fs = enable; + _transactionDetails.fsChanged = true; + + _transactionDetails.needHotswap = true; + + return; + } + +#if (defined(MACOSX) && !SDL_VERSION_ATLEAST(1, 2, 6)) || defined(__MAEMO__) + // On OS X, SDL_WM_ToggleFullScreen is currently not implemented. Worse, + // before SDL 1.2.6 it always returned -1 (which would indicate a + // successful switch). So we simply don't call it at all and use + // hotswapGFXMode() directly to switch to fullscreen mode. + hotswapGFXMode(); +#else + if (!SDL_WM_ToggleFullScreen(_hwscreen)) { + // if ToggleFullScreen fails, achieve the same effect with hotswap gfx mode + hotswapGFXMode(); + } else { + // Blit everything to the screen + internUpdateScreen(); + + // Make sure that an EVENT_SCREEN_CHANGED gets sent later + _modeChanged = true; + } +#endif + } +} + +void OSystem_SDL::setAspectRatioCorrection(bool enable) { + if ((_screenHeight == 200 && _adjustAspectRatio != enable) || + _transactionMode == kTransactionCommit) { + Common::StackLock lock(_graphicsMutex); + + //assert(_hwscreen != 0); + _adjustAspectRatio = enable; + + if (_transactionMode == kTransactionActive) { + _transactionDetails.ar = enable; + _transactionDetails.arChanged = true; + + _transactionDetails.needHotswap = true; + + return; + } else { + if (_transactionMode != kTransactionCommit) + hotswapGFXMode(); + } + + // Make sure that an EVENT_SCREEN_CHANGED gets sent later + _modeChanged = true; + } +} + +void OSystem_SDL::clearScreen() { + assert (_transactionMode == kTransactionNone); + + // Try to lock the screen surface + if (SDL_LockSurface(_screen) == -1) + error("SDL_LockSurface failed: %s", SDL_GetError()); + + byte *dst = (byte *)_screen->pixels; + + // Clear the screen + memset(dst, 0, _screenWidth * _screenHeight); + + // Unlock the screen surface + SDL_UnlockSurface(_screen); +} + +void OSystem_SDL::copyRectToScreen(const byte *src, int pitch, int x, int y, int w, int h) { + assert (_transactionMode == kTransactionNone); + assert(src); + + if (_screen == NULL) + return; + + Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends + + assert(x >= 0 && x < _screenWidth); + assert(y >= 0 && y < _screenHeight); + assert(h > 0 && y + h <= _screenHeight); + assert(w > 0 && x + w <= _screenWidth); + + if (((long)src & 3) == 0 && pitch == _screenWidth && x == 0 && y == 0 && + w == _screenWidth && h == _screenHeight && _modeFlags & DF_WANT_RECT_OPTIM) { + /* Special, optimized case for full screen updates. + * It tries to determine what areas were actually changed, + * and just updates those, on the actual display. */ + addDirtyRgnAuto(src); + } else { + /* Clip the coordinates */ + if (x < 0) { + w += x; + src -= x; + x = 0; + } + + if (y < 0) { + h += y; + src -= y * pitch; + y = 0; + } + + if (w > _screenWidth - x) { + w = _screenWidth - x; + } + + if (h > _screenHeight - y) { + h = _screenHeight - y; + } + + if (w <= 0 || h <= 0) + return; + + _cksumValid = false; + addDirtyRect(x, y, w, h); + } + + // Try to lock the screen surface + if (SDL_LockSurface(_screen) == -1) + error("SDL_LockSurface failed: %s", SDL_GetError()); + + byte *dst = (byte *)_screen->pixels + y * _screenWidth + x; + + if (_screenWidth == pitch && pitch == w) { + memcpy(dst, src, h*w); + } else { + do { + memcpy(dst, src, w); + src += pitch; + dst += _screenWidth; + } while (--h); + } + + // Unlock the screen surface + SDL_UnlockSurface(_screen); +} + +bool OSystem_SDL::grabRawScreen(Graphics::Surface *surf) { + assert(_screen); + assert(surf); + + Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends + + surf->create(_screenWidth, _screenHeight, _screen->format->BytesPerPixel); + + // Try to lock the screen surface + if (SDL_LockSurface(_screen) == -1) + error("SDL_LockSurface failed: %s", SDL_GetError()); + + memcpy(surf->pixels, _screen->pixels, _screenWidth * _screenHeight * _screen->format->BytesPerPixel); + + // Unlock the screen surface + SDL_UnlockSurface(_screen); + + return true; +} + +void OSystem_SDL::addDirtyRect(int x, int y, int w, int h, bool realCoordinates) { + if (_forceFull) + return; + + if (_numDirtyRects == NUM_DIRTY_RECT) { + _forceFull = true; + return; + } + + int height, width; + + if (!_overlayVisible && !realCoordinates) { + width = _screenWidth; + height = _screenHeight; + } else { + width = _overlayWidth; + height = _overlayHeight; + } + + // Extend the dirty region by 1 pixel for scalers + // that "smear" the screen, e.g. 2xSAI + if ((_modeFlags & DF_UPDATE_EXPAND_1_PIXEL) && !realCoordinates) { + x--; + y--; + w+=2; + h+=2; + } + + // clip + if (x < 0) { + w += x; + x = 0; + } + + if (y < 0) { + h += y; + y=0; + } + + if (w > width - x) { + w = width - x; + } + + if (h > height - y) { + h = height - y; + } + +#ifndef DISABLE_SCALERS + if (_adjustAspectRatio && !_overlayVisible && !realCoordinates) { + makeRectStretchable(x, y, w, h); + } +#endif + + if (w == width && h == height) { + _forceFull = true; + return; + } + + if (w > 0 && h > 0) { + SDL_Rect *r = &_dirtyRectList[_numDirtyRects++]; + + r->x = x; + r->y = y; + r->w = w; + r->h = h; + } +} + + +void OSystem_SDL::makeChecksums(const byte *buf) { + assert(buf); + uint32 *sums = _dirtyChecksums; + uint x,y; + const uint last_x = (uint)_screenWidth / 8; + const uint last_y = (uint)_screenHeight / 8; + + const uint BASE = 65521; /* largest prime smaller than 65536 */ + + /* the 8x8 blocks in buf are enumerated starting in the top left corner and + * reading each line at a time from left to right */ + for(y = 0; y != last_y; y++, buf += _screenWidth * (8 - 1)) + for(x = 0; x != last_x; x++, buf += 8) { + // Adler32 checksum algorithm (from RFC1950, used by gzip and zlib). + // This computes the Adler32 checksum of a 8x8 pixel block. Note + // that we can do the modulo operation (which is the slowest part) + // of the algorithm) at the end, instead of doing each iteration, + // since we only have 64 iterations in total - and thus s1 and + // s2 can't overflow anyway. + uint32 s1 = 1; + uint32 s2 = 0; + const byte *ptr = buf; + for (int subY = 0; subY < 8; subY++) { + for (int subX = 0; subX < 8; subX++) { + s1 += ptr[subX]; + s2 += s1; + } + ptr += _screenWidth; + } + + s1 %= BASE; + s2 %= BASE; + + /* output the checksum for this block */ + *sums++ = (s2 << 16) + s1; + } +} + +void OSystem_SDL::addDirtyRgnAuto(const byte *buf) { + assert(buf); + assert(((long)buf & 3) == 0); + + /* generate a table of the checksums */ + makeChecksums(buf); + + if (!_cksumValid) { + _forceFull = true; + _cksumValid = true; + } + + /* go through the checksum list, compare it with the previous checksums, + and add all dirty rectangles to a list. try to combine small rectangles + into bigger ones in a simple way */ + if (!_forceFull) { + int x, y, w; + uint32 *ck = _dirtyChecksums; + + for(y = 0; y != _screenHeight / 8; y++) { + for(x = 0; x != _screenWidth / 8; x++, ck++) { + if (ck[0] != ck[_cksumNum]) { + /* found a dirty 8x8 block, now go as far to the right as possible, + and at the same time, unmark the dirty status by setting old to new. */ + w=0; + do { + ck[w + _cksumNum] = ck[w]; + w++; + } while (x + w != _screenWidth / 8 && ck[w] != ck[w + _cksumNum]); + + addDirtyRect(x * 8, y * 8, w * 8, 8); + + if (_forceFull) + goto get_out; + } + } + } + } else { + get_out:; + /* Copy old checksums to new */ + memcpy(_dirtyChecksums + _cksumNum, _dirtyChecksums, _cksumNum * sizeof(uint32)); + } +} + +int16 OSystem_SDL::getHeight() { + return _screenHeight; +} + +int16 OSystem_SDL::getWidth() { + return _screenWidth; +} + +void OSystem_SDL::setPalette(const byte *colors, uint start, uint num) { + assert(colors); + const byte *b = colors; + uint i; + SDL_Color *base = _currentPalette + start; + for (i = 0; i < num; i++) { + base[i].r = b[0]; + base[i].g = b[1]; + base[i].b = b[2]; + b += 4; + } + + if (start < _paletteDirtyStart) + _paletteDirtyStart = start; + + if (start + num > _paletteDirtyEnd) + _paletteDirtyEnd = start + num; + + // Some games blink cursors with palette + if (_cursorPaletteDisabled) + blitCursor(); +} + +void OSystem_SDL::grabPalette(byte *colors, uint start, uint num) { + assert(colors); + const SDL_Color *base = _currentPalette + start; + + for (uint i = 0; i < num; ++i) { + colors[i * 4] = base[i].r; + colors[i * 4 + 1] = base[i].g; + colors[i * 4 + 2] = base[i].b; + colors[i * 4 + 3] = 0xFF; + } +} + +void OSystem_SDL::setCursorPalette(const byte *colors, uint start, uint num) { + assert(colors); + const byte *b = colors; + uint i; + SDL_Color *base = _cursorPalette + start; + for (i = 0; i < num; i++) { + base[i].r = b[0]; + base[i].g = b[1]; + base[i].b = b[2]; + b += 4; + } + + _cursorPaletteDisabled = false; + + blitCursor(); +} + +void OSystem_SDL::setShakePos(int shake_pos) { + assert (_transactionMode == kTransactionNone); + + _newShakePos = shake_pos; +} + + +#pragma mark - +#pragma mark --- Overlays --- +#pragma mark - + +void OSystem_SDL::showOverlay() { + assert (_transactionMode == kTransactionNone); + + int x, y; + + if (_overlayVisible) + return; + + _overlayVisible = true; + + // Since resolution could change, put mouse to adjusted position + // Fixes bug #1349059 + x = _mouseCurState.x * _scaleFactor; + if (_adjustAspectRatio) + y = real2Aspect(_mouseCurState.y) * _scaleFactor; + else + y = _mouseCurState.y * _scaleFactor; + + warpMouse(x, y); + + clearOverlay(); +} + +void OSystem_SDL::hideOverlay() { + assert (_transactionMode == kTransactionNone); + + if (!_overlayVisible) + return; + + int x, y; + + _overlayVisible = false; + + // Since resolution could change, put mouse to adjusted position + // Fixes bug #1349059 + x = _mouseCurState.x / _scaleFactor; + y = _mouseCurState.y / _scaleFactor; + if (_adjustAspectRatio) + y = aspect2Real(y); + + warpMouse(x, y); + + clearOverlay(); + + _forceFull = true; +} + +void OSystem_SDL::clearOverlay() { + //assert (_transactionMode == kTransactionNone); + + Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends + + if (!_overlayVisible) + return; + + // Clear the overlay by making the game screen "look through" everywhere. + SDL_Rect src, dst; + src.x = src.y = 0; + dst.x = dst.y = 1; + src.w = dst.w = _screenWidth; + src.h = dst.h = _screenHeight; + if (SDL_BlitSurface(_screen, &src, _tmpscreen, &dst) != 0) + error("SDL_BlitSurface failed: %s", SDL_GetError()); + + SDL_LockSurface(_tmpscreen); + SDL_LockSurface(_overlayscreen); + _scalerProc((byte *)(_tmpscreen->pixels) + _tmpscreen->pitch + 2, _tmpscreen->pitch, + (byte *)_overlayscreen->pixels, _overlayscreen->pitch, _screenWidth, _screenHeight); + +#ifndef DISABLE_SCALERS + if (_adjustAspectRatio) + stretch200To240((uint8 *)_overlayscreen->pixels, _overlayscreen->pitch, + _overlayWidth, _screenHeight * _scaleFactor, 0, 0, 0); +#endif + SDL_UnlockSurface(_tmpscreen); + SDL_UnlockSurface(_overlayscreen); + + _forceFull = true; +} + +void OSystem_SDL::grabOverlay(OverlayColor *buf, int pitch) { + assert (_transactionMode == kTransactionNone); + + if (_overlayscreen == NULL) + return; + + if (SDL_LockSurface(_overlayscreen) == -1) + error("SDL_LockSurface failed: %s", SDL_GetError()); + + byte *src = (byte *)_overlayscreen->pixels; + int h = _overlayHeight; + do { + memcpy(buf, src, _overlayWidth * 2); + src += _overlayscreen->pitch; + buf += pitch; + } while (--h); + + SDL_UnlockSurface(_overlayscreen); +} + +void OSystem_SDL::copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) { + assert (_transactionMode == kTransactionNone); + + if (_overlayscreen == NULL) + return; + + // Clip the coordinates + if (x < 0) { + w += x; + buf -= x; + x = 0; + } + + if (y < 0) { + h += y; buf -= y * pitch; + y = 0; + } + + if (w > _overlayWidth - x) { + w = _overlayWidth - x; + } + + if (h > _overlayHeight - y) { + h = _overlayHeight - y; + } + + if (w <= 0 || h <= 0) + return; + + // Mark the modified region as dirty + _cksumValid = false; + addDirtyRect(x, y, w, h); + + if (SDL_LockSurface(_overlayscreen) == -1) + error("SDL_LockSurface failed: %s", SDL_GetError()); + + byte *dst = (byte *)_overlayscreen->pixels + y * _overlayscreen->pitch + x * 2; + do { + memcpy(dst, buf, w * 2); + dst += _overlayscreen->pitch; + buf += pitch; + } while (--h); + + SDL_UnlockSurface(_overlayscreen); +} + +OverlayColor OSystem_SDL::RGBToColor(uint8 r, uint8 g, uint8 b) { + return SDL_MapRGB(_overlayscreen->format, r, g, b); +} + +void OSystem_SDL::colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) { + SDL_GetRGB(color, _overlayscreen->format, &r, &g, &b); +} + + +#pragma mark - +#pragma mark --- Mouse --- +#pragma mark - + +bool OSystem_SDL::showMouse(bool visible) { + if (_mouseVisible == visible) + return visible; + + bool last = _mouseVisible; + _mouseVisible = visible; + + return last; +} + +void OSystem_SDL::setMousePos(int x, int y) { + if (x != _mouseCurState.x || y != _mouseCurState.y) { + _mouseCurState.x = x; + _mouseCurState.y = y; + } +} + +void OSystem_SDL::warpMouse(int x, int y) { + int y1 = y; + + if (_adjustAspectRatio && !_overlayVisible) + y1 = real2Aspect(y); + + if (_mouseCurState.x != x || _mouseCurState.y != y) { + if (!_overlayVisible) + SDL_WarpMouse(x * _scaleFactor, y1 * _scaleFactor); + else + SDL_WarpMouse(x, y1); + + // SDL_WarpMouse() generates a mouse movement event, so + // setMousePos() would be called eventually. However, the + // cannon script in CoMI calls this function twice each time + // the cannon is reloaded. Unless we update the mouse position + // immediately the second call is ignored, causing the cannon + // to change its aim. + + setMousePos(x, y); + } +} + +void OSystem_SDL::setMouseCursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y, byte keycolor, int cursorTargetScale) { + if (w == 0 || h == 0) + return; + + _mouseCurState.hotX = hotspot_x; + _mouseCurState.hotY = hotspot_y; + + _mouseKeyColor = keycolor; + + _cursorTargetScale = cursorTargetScale; + + if (_mouseCurState.w != (int)w || _mouseCurState.h != (int)h) { + _mouseCurState.w = w; + _mouseCurState.h = h; + + if (_mouseOrigSurface) + SDL_FreeSurface(_mouseOrigSurface); + + // Allocate bigger surface because AdvMame2x adds black pixel at [0,0] + _mouseOrigSurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, + _mouseCurState.w + 2, + _mouseCurState.h + 2, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_mouseOrigSurface == NULL) + error("allocating _mouseOrigSurface failed"); + SDL_SetColorKey(_mouseOrigSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, kMouseColorKey); + } + + free(_mouseData); + + _mouseData = (byte *)malloc(w * h); + memcpy(_mouseData, buf, w * h); + blitCursor(); +} + +void OSystem_SDL::blitCursor() { + byte *dstPtr; + const byte *srcPtr = _mouseData; + byte color; + int w, h, i, j; + + if (!_mouseOrigSurface || !_mouseData) + return; + + w = _mouseCurState.w; + h = _mouseCurState.h; + + SDL_LockSurface(_mouseOrigSurface); + + // Make whole surface transparent + for (i = 0; i < h + 2; i++) { + dstPtr = (byte *)_mouseOrigSurface->pixels + _mouseOrigSurface->pitch * i; + for (j = 0; j < w + 2; j++) { + *(uint16 *)dstPtr = kMouseColorKey; + dstPtr += 2; + } + } + + // Draw from [1,1] since AdvMame2x adds artefact at 0,0 + dstPtr = (byte *)_mouseOrigSurface->pixels + _mouseOrigSurface->pitch + 2; + + SDL_Color *palette; + + if (_cursorPaletteDisabled) + palette = _currentPalette; + else + palette = _cursorPalette; + + for (i = 0; i < h; i++) { + for (j = 0; j < w; j++) { + color = *srcPtr; + if (color != _mouseKeyColor) { // transparent, don't draw + *(uint16 *)dstPtr = SDL_MapRGB(_mouseOrigSurface->format, + palette[color].r, palette[color].g, palette[color].b); + } + dstPtr += 2; + srcPtr++; + } + dstPtr += _mouseOrigSurface->pitch - w * 2; + } + + int rW, rH; + + if (_cursorTargetScale >= _scaleFactor) { + // The cursor target scale is greater or equal to the scale at + // which the rest of the screen is drawn. We do not downscale + // the cursor image, we draw it at its original size. It will + // appear too large on screen. + + rW = w; + rH = h; + _mouseCurState.rHotX = _mouseCurState.hotX; + _mouseCurState.rHotY = _mouseCurState.hotY; + + // The virtual dimensions may be larger than the original. + + _mouseCurState.vW = w * _cursorTargetScale / _scaleFactor; + _mouseCurState.vH = h * _cursorTargetScale / _scaleFactor; + _mouseCurState.vHotX = _mouseCurState.hotX * _cursorTargetScale / + _scaleFactor; + _mouseCurState.vHotY = _mouseCurState.hotY * _cursorTargetScale / + _scaleFactor; + } else { + // The cursor target scale is smaller than the scale at which + // the rest of the screen is drawn. We scale up the cursor + // image to make it appear correct. + + rW = w * _scaleFactor / _cursorTargetScale; + rH = h * _scaleFactor / _cursorTargetScale; + _mouseCurState.rHotX = _mouseCurState.hotX * _scaleFactor / + _cursorTargetScale; + _mouseCurState.rHotY = _mouseCurState.hotY * _scaleFactor / + _cursorTargetScale; + + // The virtual dimensions will be the same as the original. + + _mouseCurState.vW = w; + _mouseCurState.vH = h; + _mouseCurState.vHotX = _mouseCurState.hotX; + _mouseCurState.vHotY = _mouseCurState.hotY; + } + + int rH1 = rH; // store original to pass to aspect-correction function later + if (_adjustAspectRatio && _cursorTargetScale == 1) { + rH = real2Aspect(rH - 1) + 1; + _mouseCurState.rHotY = real2Aspect(_mouseCurState.rHotY); + } + + if (_mouseCurState.rW != rW || _mouseCurState.rH != rH) { + _mouseCurState.rW = rW; + _mouseCurState.rH = rH; + + if (_mouseSurface) + SDL_FreeSurface(_mouseSurface); + + _mouseSurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, + _mouseCurState.rW, + _mouseCurState.rH, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_mouseSurface == NULL) + error("allocating _mouseSurface failed"); + + SDL_SetColorKey(_mouseSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, kMouseColorKey); + } + + SDL_LockSurface(_mouseSurface); + + ScalerProc *scalerProc; + + // If possible, use the same scaler for the cursor as for the rest of + // the game. This only works well with the non-blurring scalers so we + // actually only use the 1x, 1.5x, 2x and AdvMame scalers. + + if (_cursorTargetScale == 1 && (_mode == GFX_DOUBLESIZE || _mode == GFX_TRIPLESIZE)) + scalerProc = _scalerProc; + else + scalerProc = scalersMagn[_cursorTargetScale - 1][_scaleFactor - 1]; + + scalerProc((byte *)_mouseOrigSurface->pixels + _mouseOrigSurface->pitch + 2, + _mouseOrigSurface->pitch, (byte *)_mouseSurface->pixels, _mouseSurface->pitch, + _mouseCurState.w, _mouseCurState.h); + +#ifndef DISABLE_SCALERS + if (_adjustAspectRatio && _cursorTargetScale == 1) + cursorStretch200To240((uint8 *)_mouseSurface->pixels, _mouseSurface->pitch, rW, rH1, 0, 0, 0); +#endif + + SDL_UnlockSurface(_mouseSurface); + SDL_UnlockSurface(_mouseOrigSurface); +} + +#ifndef DISABLE_SCALERS +// Basically it is kVeryFastAndUglyAspectMode of stretch200To240 from +// common/scale/aspect.cpp +static int cursorStretch200To240(uint8 *buf, uint32 pitch, int width, int height, int srcX, int srcY, int origSrcY) { + int maxDstY = real2Aspect(origSrcY + height - 1); + int y; + const uint8 *startSrcPtr = buf + srcX * 2 + (srcY - origSrcY) * pitch; + uint8 *dstPtr = buf + srcX * 2 + maxDstY * pitch; + + for (y = maxDstY; y >= srcY; y--) { + const uint8 *srcPtr = startSrcPtr + aspect2Real(y) * pitch; + + if (srcPtr == dstPtr) + break; + memcpy(dstPtr, srcPtr, width * 2); + dstPtr -= pitch; + } + + return 1 + maxDstY - srcY; +} +#endif + +void OSystem_SDL::toggleMouseGrab() { + if (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_OFF) + SDL_WM_GrabInput(SDL_GRAB_ON); + else + SDL_WM_GrabInput(SDL_GRAB_OFF); +} + +void OSystem_SDL::undrawMouse() { + const int x = _mouseBackup.x; + const int y = _mouseBackup.y; + + // When we switch bigger overlay off mouse jumps. Argh! + // This is intended to prevent undrawing offscreen mouse + if (!_overlayVisible && (x >= _screenWidth || y >= _screenHeight)) { + return; + } + + if (_mouseBackup.w != 0 && _mouseBackup.h != 0) + addDirtyRect(x, y, _mouseBackup.w, _mouseBackup.h); +} + +void OSystem_SDL::drawMouse() { + if (!_mouseVisible || !_mouseSurface) { + _mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0; + return; + } + + SDL_Rect dst; + int scale; + int width, height; + int hotX, hotY; + + dst.x = _mouseCurState.x; + dst.y = _mouseCurState.y; + + if (!_overlayVisible) { + scale = _scaleFactor; + width = _screenWidth; + height = _screenHeight; + dst.w = _mouseCurState.vW; + dst.h = _mouseCurState.vH; + hotX = _mouseCurState.vHotX; + hotY = _mouseCurState.vHotY; + } else { + scale = 1; + width = _overlayWidth; + height = _overlayHeight; + dst.w = _mouseCurState.rW; + dst.h = _mouseCurState.rH; + hotX = _mouseCurState.rHotX; + hotY = _mouseCurState.rHotY; + } + + // The mouse is undrawn using virtual coordinates, i.e. they may be + // scaled and aspect-ratio corrected. + + _mouseBackup.x = dst.x - hotX; + _mouseBackup.y = dst.y - hotY; + _mouseBackup.w = dst.w; + _mouseBackup.h = dst.h; + + // We draw the pre-scaled cursor image, so now we need to adjust for + // scaling, shake position and aspect ratio correction manually. + + if (!_overlayVisible) { + dst.y += _currentShakePos; + } + + if (_adjustAspectRatio && !_overlayVisible) + dst.y = real2Aspect(dst.y); + + dst.x = scale * dst.x - _mouseCurState.rHotX; + dst.y = scale * dst.y - _mouseCurState.rHotY; + dst.w = _mouseCurState.rW; + dst.h = _mouseCurState.rH; + + // Note that SDL_BlitSurface() and addDirtyRect() will both perform any + // clipping necessary + + if (SDL_BlitSurface(_mouseSurface, NULL, _hwscreen, &dst) != 0) + error("SDL_BlitSurface failed: %s", SDL_GetError()); + + // The screen will be updated using real surface coordinates, i.e. + // they will not be scaled or aspect-ratio corrected. + + addDirtyRect(dst.x, dst.y, dst.w, dst.h, true); +} + +#pragma mark - +#pragma mark --- On Screen Display --- +#pragma mark - + +#ifdef USE_OSD +void OSystem_SDL::displayMessageOnOSD(const char *msg) { + assert (_transactionMode == kTransactionNone); + assert(msg); + + uint i; + + // Lock the OSD surface for drawing + if (SDL_LockSurface(_osdSurface)) + error("displayMessageOnOSD: SDL_LockSurface failed: %s", SDL_GetError()); + + Graphics::Surface dst; + dst.pixels = _osdSurface->pixels; + dst.w = _osdSurface->w; + dst.h = _osdSurface->h; + dst.pitch = _osdSurface->pitch; + dst.bytesPerPixel = _osdSurface->format->BytesPerPixel; + + // The font we are going to use: + const Graphics::Font *font = FontMan.getFontByUsage(Graphics::FontManager::kOSDFont); + + // Clear everything with the "transparent" color, i.e. the colorkey + SDL_FillRect(_osdSurface, 0, kOSDColorKey); + + // Split the message into separate lines. + Common::StringList lines; + const char *ptr; + for (ptr = msg; *ptr; ++ptr) { + if (*ptr == '\n') { + lines.push_back(Common::String(msg, ptr - msg)); + msg = ptr + 1; + } + } + lines.push_back(Common::String(msg, ptr - msg)); + + // Determine a rect which would contain the message string (clipped to the + // screen dimensions). + const int vOffset = 6; + const int lineSpacing = 1; + const int lineHeight = font->getFontHeight() + 2 * lineSpacing; + int width = 0; + int height = lineHeight * lines.size() + 2 * vOffset; + for (i = 0; i < lines.size(); i++) { + width = MAX(width, font->getStringWidth(lines[i]) + 14); + } + + // Clip the rect + if (width > dst.w) + width = dst.w; + if (height > dst.h) + height = dst.h; + + // Draw a dark gray rect + // TODO: Rounded corners ? Border? + SDL_Rect osdRect; + osdRect.x = (dst.w - width) / 2; + osdRect.y = (dst.h - height) / 2; + osdRect.w = width; + osdRect.h = height; + SDL_FillRect(_osdSurface, &osdRect, SDL_MapRGB(_osdSurface->format, 64, 64, 64)); + + // Render the message, centered, and in white + for (i = 0; i < lines.size(); i++) { + font->drawString(&dst, lines[i], + osdRect.x, osdRect.y + i * lineHeight + vOffset + lineSpacing, osdRect.w, + SDL_MapRGB(_osdSurface->format, 255, 255, 255), + Graphics::kTextAlignCenter); + } + + // Finished drawing, so unlock the OSD surface again + SDL_UnlockSurface(_osdSurface); + + // Init the OSD display parameters, and the fade out + _osdAlpha = SDL_ALPHA_TRANSPARENT + kOSDInitialAlpha * (SDL_ALPHA_OPAQUE - SDL_ALPHA_TRANSPARENT) / 100; + _osdFadeStartTime = SDL_GetTicks() + kOSDFadeOutDelay; + SDL_SetAlpha(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, _osdAlpha); + + // Ensure a full redraw takes place next time the screen is updated + _forceFull = true; +} +#endif + + +#pragma mark - +#pragma mark --- Misc --- +#pragma mark - + +void OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) { + // Ctrl-Alt-a toggles aspect ratio correction + if (key.keysym.sym == 'a') { + setFeatureState(kFeatureAspectRatioCorrection, !_adjustAspectRatio); +#ifdef USE_OSD + char buffer[128]; + if (_adjustAspectRatio) + sprintf(buffer, "Enabled aspect ratio correction\n%d x %d -> %d x %d", + _screenWidth, _screenHeight, + _hwscreen->w, _hwscreen->h + ); + else + sprintf(buffer, "Disabled aspect ratio correction\n%d x %d -> %d x %d", + _screenWidth, _screenHeight, + _hwscreen->w, _hwscreen->h + ); + displayMessageOnOSD(buffer); +#endif + + return; + } + + int newMode = -1; + int factor = _scaleFactor - 1; + + // Increase/decrease the scale factor + if (key.keysym.sym == SDLK_EQUALS || key.keysym.sym == SDLK_PLUS || key.keysym.sym == SDLK_MINUS || + key.keysym.sym == SDLK_KP_PLUS || key.keysym.sym == SDLK_KP_MINUS) { + factor += (key.keysym.sym == SDLK_MINUS || key.keysym.sym == SDLK_KP_MINUS) ? -1 : +1; + if (0 <= factor && factor <= 3) { + newMode = s_gfxModeSwitchTable[_scalerType][factor]; + } + } + + const bool isNormalNumber = (SDLK_1 <= key.keysym.sym && key.keysym.sym <= SDLK_9); + const bool isKeypadNumber = (SDLK_KP1 <= key.keysym.sym && key.keysym.sym <= SDLK_KP9); + if (isNormalNumber || isKeypadNumber) { + _scalerType = key.keysym.sym - (isNormalNumber ? SDLK_1 : SDLK_KP1); + if (_scalerType >= ARRAYSIZE(s_gfxModeSwitchTable)) + return; + + while (s_gfxModeSwitchTable[_scalerType][factor] < 0) { + assert(factor > 0); + factor--; + } + newMode = s_gfxModeSwitchTable[_scalerType][factor]; + } + + if (newMode >= 0) { + setGraphicsMode(newMode); +#ifdef USE_OSD + if (_osdSurface) { + const char *newScalerName = 0; + const GraphicsMode *g = getSupportedGraphicsModes(); + while (g->name) { + if (g->id == _mode) { + newScalerName = g->description; + break; + } + g++; + } + if (newScalerName) { + char buffer[128]; + sprintf(buffer, "Active graphics filter: %s\n%d x %d -> %d x %d", + newScalerName, + _screenWidth, _screenHeight, + _hwscreen->w, _hwscreen->h + ); + displayMessageOnOSD(buffer); + } + } +#endif + + } + +} diff --git a/backends/platform/sdl/module.mk b/backends/platform/sdl/module.mk new file mode 100644 index 0000000000..18e56bc4fe --- /dev/null +++ b/backends/platform/sdl/module.mk @@ -0,0 +1,12 @@ +MODULE := backends/platform/sdl + +MODULE_OBJS := \ + events.o \ + graphics.o \ + sdl.o + +MODULE_DIRS += \ + backends/platform/sdl/ + +# We don't use the rules.mk here on purpose +OBJS := $(addprefix $(MODULE)/, $(MODULE_OBJS)) $(OBJS) diff --git a/backends/platform/sdl/sdl-common.h b/backends/platform/sdl/sdl-common.h new file mode 100644 index 0000000000..f4c9383c63 --- /dev/null +++ b/backends/platform/sdl/sdl-common.h @@ -0,0 +1,392 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +#ifndef SDL_COMMON_H +#define SDL_COMMON_H + +#include <SDL.h> + +#include "common/stdafx.h" +#include "common/scummsys.h" +#include "common/system.h" +#include "graphics/scaler.h" +#include "backends/intern.h" + + +#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) +// Uncomment this to enable the 'on screen display' code. +#define USE_OSD 1 +#endif + + +enum { + GFX_NORMAL = 0, + GFX_DOUBLESIZE = 1, + GFX_TRIPLESIZE = 2, + GFX_2XSAI = 3, + GFX_SUPER2XSAI = 4, + GFX_SUPEREAGLE = 5, + GFX_ADVMAME2X = 6, + GFX_ADVMAME3X = 7, + GFX_HQ2X = 8, + GFX_HQ3X = 9, + GFX_TV2X = 10, + GFX_DOTMATRIX = 11 +}; + + +class OSystem_SDL : public OSystem { +public: + OSystem_SDL(); + virtual ~OSystem_SDL(); + + virtual void initBackend(); + + void beginGFXTransaction(void); + void endGFXTransaction(void); + + // Set the size of the video bitmap. + // Typically, 320x200 + virtual void initSize(uint w, uint h); // overloaded by CE backend + + // Set colors of the palette + void setPalette(const byte *colors, uint start, uint num); + + // Get colors of the palette + void grabPalette(byte *colors, uint start, uint num); + + // Draw a bitmap to screen. + // The screen will not be updated to reflect the new bitmap + virtual void copyRectToScreen(const byte *src, int pitch, int x, int y, int w, int h); // overloaded by CE backend (FIXME) + + // Copies the screen to a buffer + bool grabRawScreen(Graphics::Surface *surf); + + // Clear the screen + void clearScreen(); + + // Update the dirty areas of the screen + void updateScreen(); + + // Either show or hide the mouse cursor + bool showMouse(bool visible); + + // Warp the mouse cursor. Where set_mouse_pos() only informs the + // backend of the mouse cursor's current position, this function + // actually moves the cursor to the specified position. + virtual void warpMouse(int x, int y); // overloaded by CE backend (FIXME) + + // Set the bitmap that's used when drawing the cursor. + virtual void setMouseCursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y, byte keycolor, int cursorTargetScale); // overloaded by CE backend (FIXME) + + // Set colors of cursor palette + void setCursorPalette(const byte *colors, uint start, uint num); + + // Disables or enables cursor palette + void disableCursorPalette(bool disable) { + _cursorPaletteDisabled = disable; + blitCursor(); + }; + + // Shaking is used in SCUMM. Set current shake position. + void setShakePos(int shake_pos); + + // Get the number of milliseconds since the program was started. + uint32 getMillis(); + + // Delay for a specified amount of milliseconds + void delayMillis(uint msecs); + + // Get the next event. + // Returns true if an event was retrieved. + virtual bool pollEvent(Event &event); // overloaded by CE backend + + // Set function that generates samples + virtual bool setSoundCallback(SoundProc proc, void *param); // overloaded by CE backend + + void clearSoundCallback(); + + // Poll CD status + // Returns true if cd audio is playing + bool pollCD(); + + // Play CD audio track + void playCD(int track, int num_loops, int start_frame, int duration); + + // Stop CD audio track + void stopCD(); + + // Update CD audio status + void updateCD(); + + // Quit + virtual void quit(); // overloaded by CE backend + + + // Add a callback timer + void setTimerCallback(TimerProc callback, int timer); + + // Mutex handling + MutexRef createMutex(); + void lockMutex(MutexRef mutex); + void unlockMutex(MutexRef mutex); + void deleteMutex(MutexRef mutex); + + // Overlay + virtual void showOverlay(); // WinCE FIXME + virtual void hideOverlay(); // WinCE FIXME + virtual void clearOverlay(); + virtual void grabOverlay(OverlayColor *buf, int pitch); + virtual void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h); // WinCE FIXME + virtual int16 getHeight(); + virtual int16 getWidth(); + virtual int16 getOverlayHeight() { return _overlayHeight; } + virtual int16 getOverlayWidth() { return _overlayWidth; } + + // Methods that convert RGB to/from colors suitable for the overlay. + virtual OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b); + virtual void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b); + + + virtual const GraphicsMode *getSupportedGraphicsModes() const; + virtual int getDefaultGraphicsMode() const; + virtual bool setGraphicsMode(int mode); + virtual int getGraphicsMode() const; + + virtual void setWindowCaption(const char *caption); + virtual bool openCD(int drive); + virtual int getOutputSampleRate() const; + + virtual bool hasFeature(Feature f); + virtual void setFeatureState(Feature f, bool enable); + virtual bool getFeatureState(Feature f); + +#ifdef USE_OSD + void displayMessageOnOSD(const char *msg); +#endif + +protected: + bool _inited; + +#ifdef USE_OSD + SDL_Surface *_osdSurface; + Uint8 _osdAlpha; // Transparency level of the OSD + uint32 _osdFadeStartTime; // When to start the fade out + enum { + kOSDFadeOutDelay = 2 * 1000, // Delay before the OSD is faded out (in milliseconds) + kOSDFadeOutDuration = 500, // Duration of the OSD fade out (in milliseconds) + kOSDColorKey = 1, + kOSDInitialAlpha = 80 // Initial alpha level, in percent + }; +#endif + + // hardware screen + SDL_Surface *_hwscreen; + + // unseen game screen + SDL_Surface *_screen; + int _screenWidth, _screenHeight; + + // temporary screen (for scalers) + SDL_Surface *_tmpscreen; + SDL_Surface *_tmpscreen2; + + // overlay + SDL_Surface *_overlayscreen; + int _overlayWidth, _overlayHeight; + bool _overlayVisible; + + // Audio + int _samplesPerSec; + + // CD Audio + SDL_CD *_cdrom; + int _cdTrack, _cdNumLoops, _cdStartFrame, _cdDuration; + uint32 _cdEndTime, _cdStopTime; + + enum { + DF_WANT_RECT_OPTIM = 1 << 0, + DF_UPDATE_EXPAND_1_PIXEL = 1 << 1 + }; + + enum { + kTransactionNone = 0, + kTransactionCommit = 1, + kTransactionActive = 2 + }; + + struct TransactionDetails { + int mode; + bool modeChanged; + int w; + int h; + bool sizeChanged; + bool fs; + bool fsChanged; + bool ar; + bool arChanged; + bool needHotswap; + bool needUpdatescreen; + bool needUnload; + bool needToggle; + bool normal1xScaler; + }; + TransactionDetails _transactionDetails; + + /** Force full redraw on next updateScreen */ + bool _forceFull; + ScalerProc *_scalerProc; + int _scalerType; + int _scaleFactor; + int _mode; + int _transactionMode; + bool _fullscreen; + + /** Current video mode flags (see DF_* constants) */ + uint32 _modeFlags; + bool _modeChanged; + + /** True if aspect ratio correction is enabled. */ + bool _adjustAspectRatio; + + enum { + NUM_DIRTY_RECT = 100, + + MAX_MOUSE_W = 80, + MAX_MOUSE_H = 80, + MAX_SCALING = 3 + }; + + // Dirty rect management + SDL_Rect _dirtyRectList[NUM_DIRTY_RECT]; + int _numDirtyRects; + uint32 *_dirtyChecksums; + bool _cksumValid; + int _cksumNum; + + // Keyboard mouse emulation. Disabled by fingolfin 2004-12-18. + // I am keeping the rest of the code in for now, since the joystick + // code (or rather, "hack") uses it, too. + struct KbdMouse { + int16 x, y, x_vel, y_vel, x_max, y_max, x_down_count, y_down_count; + uint32 last_time, delay_time, x_down_time, y_down_time; + }; + + struct MousePos { + // The mouse position, using either virtual (game) or real + // (overlay) coordinates. + int16 x, y; + + // The size and hotspot of the original cursor image. + int16 w, h; + int16 hotX, hotY; + + // The size and hotspot of the pre-scaled cursor image, in real + // coordinates. + int16 rW, rH; + int16 rHotX, rHotY; + + // The size and hotspot of the pre-scaled cursor image, in game + // coordinates. + int16 vW, vH; + int16 vHotX, vHotY; + + MousePos() : x(0), y(0), w(0), h(0), hotX(0), hotY(0), + rW(0), rH(0), rHotX(0), rHotY(0), vW(0), vH(0), + vHotX(0), vHotY(0) + { } + }; + + // mouse + KbdMouse _km; + bool _mouseVisible; + bool _mouseDrawn; + byte *_mouseData; + SDL_Rect _mouseBackup; + MousePos _mouseCurState; + byte _mouseKeyColor; + int _cursorTargetScale; + bool _cursorPaletteDisabled; + SDL_Surface *_mouseOrigSurface; + SDL_Surface *_mouseSurface; + enum { + kMouseColorKey = 1 + }; + + // joystick + SDL_Joystick *_joystick; + + // Shake mode + int _currentShakePos; + int _newShakePos; + + // Palette data + SDL_Color *_currentPalette; + uint _paletteDirtyStart, _paletteDirtyEnd; + + // Cursor palette data + SDL_Color *_cursorPalette; + + /** + * Mutex which prevents multiple threads from interfering with each other + * when accessing the screen. + */ + MutexRef _graphicsMutex; + + + void addDirtyRgnAuto(const byte *buf); + void makeChecksums(const byte *buf); + + virtual void addDirtyRect(int x, int y, int w, int h, bool realCoordinates = false); // overloaded by CE backend + + virtual void drawMouse(); // overloaded by CE backend + virtual void undrawMouse(); // overloaded by CE backend (FIXME) + virtual void blitCursor(); // overloaded by CE backend (FIXME) + + /** Set the position of the virtual mouse cursor. */ + void setMousePos(int x, int y); + virtual void fillMouseEvent(Event &event, int x, int y); // overloaded by CE backend + void toggleMouseGrab(); + + virtual void internUpdateScreen(); // overloaded by CE backend + + virtual void loadGFXMode(); // overloaded by CE backend + virtual void unloadGFXMode(); // overloaded by CE backend + virtual void hotswapGFXMode(); // overloaded by CE backend + + void setFullscreenMode(bool enable); + void setAspectRatioCorrection(bool enable); + + virtual bool saveScreenshot(const char *filename); // overloaded by CE backend + + int effectiveScreenHeight() const { return (_adjustAspectRatio ? 240 : _screenHeight) * _scaleFactor; } + + void setupIcon(); + void handleKbdMouse(); + + virtual bool remapKey(SDL_Event &ev, Event &event); + + void handleScalerHotkeys(const SDL_KeyboardEvent &key); +}; + +#endif diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp new file mode 100644 index 0000000000..b6d2d675df --- /dev/null +++ b/backends/platform/sdl/sdl.cpp @@ -0,0 +1,488 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +#include "backends/platform/sdl/sdl-common.h" +#include "common/config-manager.h" +#include "common/util.h" +#include "base/main.h" + +#include "icons/scummvm.xpm" + +#if defined(__SYMBIAN32__) +#include "SymbianOs.h" +#endif + +#if !defined(_WIN32_WCE) && !defined(__MAEMO__) + +#if defined (WIN32) +int __stdcall WinMain(HINSTANCE /*hInst*/, HINSTANCE /*hPrevInst*/, LPSTR /*lpCmdLine*/, int /*iShowCmd*/) { + SDL_SetModuleHandle(GetModuleHandle(NULL)); + return main(__argc, __argv); +} +#endif + +int main(int argc, char *argv[]) { + +#if defined(__SYMBIAN32__) + // + // Set up redirects for stdout/stderr under Windows and Symbian. + // Code copied from SDL_main. + // + + // Symbian does not like any output to the console through any *print* function + char STDOUT_FILE[256], STDERR_FILE[256]; // shhh, don't tell anybody :) + strcpy(STDOUT_FILE, Symbian::GetExecutablePath()); + strcpy(STDERR_FILE, Symbian::GetExecutablePath()); + strcat(STDOUT_FILE, "scummvm.stdout.txt"); + strcat(STDERR_FILE, "scummvm.stderr.txt"); + + /* Flush the output in case anything is queued */ + fclose(stdout); + fclose(stderr); + + /* Redirect standard input and standard output */ + FILE *newfp = freopen(STDOUT_FILE, "w", stdout); + if (newfp == NULL) { /* This happens on NT */ +#if !defined(stdout) + stdout = fopen(STDOUT_FILE, "w"); +#else + newfp = fopen(STDOUT_FILE, "w"); + if (newfp) { + *stdout = *newfp; + } +#endif + } + newfp = freopen(STDERR_FILE, "w", stderr); + if (newfp == NULL) { /* This happens on NT */ +#if !defined(stderr) + stderr = fopen(STDERR_FILE, "w"); +#else + newfp = fopen(STDERR_FILE, "w"); + if (newfp) { + *stderr = *newfp; + } +#endif + } + setbuf(stderr, NULL); /* No buffering */ + +#endif // defined(__SYMBIAN32__) + + // Create our OSystem instance +#if defined(__SYMBIAN32__) + g_system = new OSystem_SDL_Symbian(); +#else + g_system = new OSystem_SDL(); +#endif + assert(g_system); + + // Invoke the actual ScummVM main entry point: + int res = scummvm_main(argc, argv); + g_system->quit(); // TODO: Consider removing / replacing this! + return res; +} +#endif + +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); + + _cksumValid = false; +#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) && !defined(DISABLE_SCALERS) + _mode = GFX_DOUBLESIZE; + _scaleFactor = 2; + _scalerProc = Normal2x; + _fullscreen = ConfMan.getBool("fullscreen"); + _adjustAspectRatio = ConfMan.getBool("aspect_ratio"); +#else // for small screen platforms + _mode = GFX_NORMAL; + _scaleFactor = 1; + _scalerProc = Normal1x; + +#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) + _fullscreen = ConfMan.getBool("fullscreen"); +#else + _fullscreen = true; +#endif + + _adjustAspectRatio = false; +#endif + _scalerType = 0; + _modeFlags = 0; + +#if !defined(MACOSX) && !defined(__SYMBIAN32__) // Don't set icon on OS X, as we use a nicer external icon there + setupIcon(); // Don't for Symbian: it uses the EScummVM.aif file for the icon +#endif + + // enable joystick + if (joystick_num > -1 && SDL_NumJoysticks() > 0) { + printf("Using joystick: %s\n", SDL_JoystickName(0)); + _joystick = SDL_JoystickOpen(joystick_num); + } + + _inited = true; +} + +OSystem_SDL::OSystem_SDL() + : +#ifdef USE_OSD + _osdSurface(0), _osdAlpha(SDL_ALPHA_TRANSPARENT), _osdFadeStartTime(0), +#endif + _hwscreen(0), _screen(0), _screenWidth(0), _screenHeight(0), + _tmpscreen(0), _overlayWidth(0), _overlayHeight(0), + _overlayVisible(false), + _overlayscreen(0), _tmpscreen2(0), + _samplesPerSec(0), + _cdrom(0), _scalerProc(0), _modeChanged(false), _dirtyChecksums(0), + _mouseVisible(false), _mouseDrawn(false), _mouseData(0), _mouseSurface(0), + _mouseOrigSurface(0), _cursorTargetScale(1), _cursorPaletteDisabled(true), + _joystick(0), + _currentShakePos(0), _newShakePos(0), + _paletteDirtyStart(0), _paletteDirtyEnd(0), + _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; +} + +OSystem_SDL::~OSystem_SDL() { + free(_dirtyChecksums); + free(_currentPalette); + free(_cursorPalette); + free(_mouseData); +} + +uint32 OSystem_SDL::getMillis() { + return SDL_GetTicks(); +} + +void OSystem_SDL::delayMillis(uint msecs) { + SDL_Delay(msecs); +} + +void OSystem_SDL::setTimerCallback(TimerProc callback, int timer) { + SDL_SetTimer(timer, (SDL_TimerCallback) callback); +} + +void OSystem_SDL::setWindowCaption(const char *caption) { + SDL_WM_SetCaption(caption, caption); +} + +bool OSystem_SDL::hasFeature(Feature f) { + return + (f == kFeatureFullscreenMode) || + (f == kFeatureAspectRatioCorrection) || + (f == kFeatureAutoComputeDirtyRects) || + (f == kFeatureCursorHasPalette); +} + +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; + default: + break; + } +} + +bool OSystem_SDL::getFeatureState(Feature f) { + assert (_transactionMode == kTransactionNone); + + switch (f) { + case kFeatureFullscreenMode: + return _fullscreen; + case kFeatureAspectRatioCorrection: + return _adjustAspectRatio; + 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_Quit(); + + exit(0); +} + +void OSystem_SDL::setupIcon() { + int w, h, ncols, nbytes, i; + unsigned int rgba[256], icon[32 * 32]; + unsigned char mask[32][4]; + + sscanf(scummvm_icon[0], "%d %d %d %d", &w, &h, &ncols, &nbytes); + if ((w != 32) || (h != 32) || (ncols > 255) || (nbytes > 1)) { + warning("Could not load the icon (%d %d %d %d)", w, h, ncols, nbytes); + 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 icon (%d %s - %s) ", code, color, scummvm_icon[1 + i]); + return; + } + + rgba[code] = col; + } + memset(mask, 0, sizeof(mask)); + for (h = 0; h < 32; h++) { + const char *line = scummvm_icon[1 + ncols + h]; + for (w = 0; w < 32; w++) { + icon[w + 32 * h] = rgba[(int)line[w]]; + if (rgba[(int)line[w]] & 0xFF000000) { + mask[h][w >> 3] |= 1 << (7 - (w & 0x07)); + } + } + } + + SDL_Surface *sdl_surf = SDL_CreateRGBSurfaceFrom(icon, 32, 32, 32, 32 * 4, 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000); + SDL_WM_SetIcon(sdl_surf, (unsigned char *) mask); + SDL_FreeSurface(sdl_surf); +} + +OSystem::MutexRef OSystem_SDL::createMutex(void) { + 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 - + +bool OSystem_SDL::setSoundCallback(SoundProc proc, void *param) { + SDL_AudioSpec desired; + SDL_AudioSpec obtained; + + memset(&desired, 0, sizeof(desired)); + + _samplesPerSec = 0; + + if (ConfMan.hasKey("output_rate")) + _samplesPerSec = ConfMan.getInt("output_rate"); + + if (_samplesPerSec <= 0) + _samplesPerSec = SAMPLES_PER_SEC; + + // Originally, we always used 2048 samples. This loop will produce the + // same result at 22050 Hz, and should hopefully produce something + // sensible for other frequencies. Note that it must be a power of two. + + uint32 samples = 0x8000; + + for (;;) { + if ((1000 * samples) / _samplesPerSec < 100) + break; + samples >>= 1; + } + + desired.freq = _samplesPerSec; + desired.format = AUDIO_S16SYS; + desired.channels = 2; + desired.samples = (uint16)samples; + desired.callback = proc; + desired.userdata = param; + if (SDL_OpenAudio(&desired, &obtained) != 0) { + warning("Could not open audio device: %s", SDL_GetError()); + return false; + } + // 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 = obtained.freq; + SDL_PauseAudio(0); + return true; +} + +void OSystem_SDL::clearSoundCallback() { + SDL_CloseAudio(); +} + +int OSystem_SDL::getOutputSampleRate() const { + return _samplesPerSec; +} + +#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_STOPPED)); +} + +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; + } +} |