1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
|
/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SDL_COMMON_H
#define SDL_COMMON_H
#if defined(__SYMBIAN32__)
#include <esdl\SDL.h>
#else
#include <SDL.h>
#endif
#include "backends/base-backend.h"
#include "graphics/scaler.h"
namespace Audio {
class MixerImpl;
}
#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__)
// Uncomment this to enable the 'on screen display' code.
#define USE_OSD 1
#endif
#if defined(MACOSX)
// On Mac OS X, we need to double buffer the audio buffer, else anything
// which produces sampled data with high latency (like the MT-32 emulator)
// will sound terribly.
// This could be enabled for more / most ports in the future, but needs some
// testing.
#define MIXER_DOUBLE_BUFFERING 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 AspectRatio {
int _kw, _kh;
public:
AspectRatio() { _kw = _kh = 0; }
AspectRatio(int w, int h);
bool isAuto() const { return (_kw | _kh) == 0; }
int kw() const { return _kw; }
int kh() const { return _kh; }
};
class OSystem_SDL : public BaseBackend {
public:
OSystem_SDL();
virtual ~OSystem_SDL();
virtual void initBackend();
void beginGFXTransaction();
TransactionError endGFXTransaction();
#ifdef USE_RGB_COLOR
// Game screen
virtual Graphics::PixelFormat getScreenFormat() const { return _screenFormat; }
// Highest supported
virtual Common::List<Graphics::PixelFormat> getSupportedFormats();
#endif
// Set the size and format of the video bitmap.
// Typically, 320x200 CLUT8
virtual void initSize(uint w, uint h, const Graphics::PixelFormat *format); // overloaded by CE backend
virtual int getScreenChangeID() const { return _screenChangeCount; }
// 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)
virtual Graphics::Surface *lockScreen();
virtual void unlockScreen();
// 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, uint32 keycolor, int cursorTargetScale, const Graphics::PixelFormat *format); // 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(Common::Event &event); // overloaded by CE backend
protected:
virtual bool dispatchSDLEvent(const SDL_Event &ev, Common::Event &event);
// Handlers for specific SDL events, called by pollEvent.
// This way, if a backend inherits fromt the SDL backend, it can
// change the behavior of only a single event, without having to override all
// of pollEvent.
virtual bool handleKeyDown(const SDL_Event &ev, Common::Event &event);
virtual bool handleKeyUp(const SDL_Event &ev, Common::Event &event);
virtual bool handleMouseMotion(const SDL_Event &ev, Common::Event &event);
virtual bool handleMouseButtonDown(const SDL_Event &ev, Common::Event &event);
virtual bool handleMouseButtonUp(const SDL_Event &ev, Common::Event &event);
virtual bool handleJoyButtonDown(const SDL_Event &ev, Common::Event &event);
virtual bool handleJoyButtonUp(const SDL_Event &ev, Common::Event &event);
virtual bool handleJoyAxisMotion(const SDL_Event &ev, Common::Event &event);
public:
// Define all hardware keys for keymapper
virtual Common::HardwareKeySet *getHardwareKeySet();
// Set function that generates samples
virtual void setupMixer();
static void mixCallback(void *s, byte *samples, int len);
virtual void closeMixer();
virtual Audio::Mixer *getMixer();
// 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
virtual void getTimeAndDate(TimeDate &t) const;
virtual Common::TimerManager *getTimerManager();
// Mutex handling
MutexRef createMutex();
void lockMutex(MutexRef mutex);
void unlockMutex(MutexRef mutex);
void deleteMutex(MutexRef mutex);
// Overlay
virtual Graphics::PixelFormat getOverlayFormat() const { return _overlayFormat; }
virtual void showOverlay();
virtual void hideOverlay();
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);
virtual int16 getHeight();
virtual int16 getWidth();
virtual int16 getOverlayHeight() { return _videoMode.overlayHeight; }
virtual int16 getOverlayWidth() { return _videoMode.overlayWidth; }
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 bool hasFeature(Feature f);
virtual void setFeatureState(Feature f, bool enable);
virtual bool getFeatureState(Feature f);
virtual void preprocessEvents(SDL_Event *event) {};
#ifdef USE_OSD
void displayMessageOnOSD(const char *msg);
#endif
virtual Common::SaveFileManager *getSavefileManager();
virtual FilesystemFactory *getFilesystemFactory();
virtual void addSysArchivesToSearchSet(Common::SearchSet &s, int priority = 0);
virtual Common::SeekableReadStream *createConfigReadStream();
virtual Common::WriteStream *createConfigWriteStream();
protected:
bool _inited;
SDL_AudioSpec _obtainedRate;
#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;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat _screenFormat;
Graphics::PixelFormat _cursorFormat;
#endif
// temporary screen (for scalers)
SDL_Surface *_tmpscreen;
SDL_Surface *_tmpscreen2;
// overlay
SDL_Surface *_overlayscreen;
bool _overlayVisible;
Graphics::PixelFormat _overlayFormat;
// Audio
int _samplesPerSec;
// CD Audio
SDL_CD *_cdrom;
int _cdTrack, _cdNumLoops, _cdStartFrame, _cdDuration;
uint32 _cdEndTime, _cdStopTime;
enum {
DF_WANT_RECT_OPTIM = 1 << 0
};
enum {
kTransactionNone = 0,
kTransactionActive = 1,
kTransactionRollback = 2
};
struct TransactionDetails {
bool sizeChanged;
bool needHotswap;
bool needUpdatescreen;
bool normal1xScaler;
#ifdef USE_RGB_COLOR
bool formatChanged;
#endif
};
TransactionDetails _transactionDetails;
struct VideoState {
bool setup;
bool fullscreen;
bool aspectRatioCorrection;
AspectRatio desiredAspectRatio;
int mode;
int scaleFactor;
int screenWidth, screenHeight;
int overlayWidth, overlayHeight;
int hardwareWidth, hardwareHeight;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat format;
#endif
};
VideoState _videoMode, _oldVideoMode;
virtual void setGraphicsModeIntern(); // overloaded by CE backend
/** Force full redraw on next updateScreen */
bool _forceFull;
ScalerProc *_scalerProc;
int _scalerType;
int _transactionMode;
bool _screenIsLocked;
Graphics::Surface _framebuffer;
/** Current video mode flags (see DF_* constants) */
uint32 _modeFlags;
bool _modeChanged;
int _screenChangeCount;
enum {
NUM_DIRTY_RECT = 100,
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 _mouseNeedsRedraw;
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;
#ifdef MIXER_DOUBLE_BUFFERING
SDL_mutex *_soundMutex;
SDL_cond *_soundCond;
SDL_Thread *_soundThread;
bool _soundThreadIsRunning;
bool _soundThreadShouldQuit;
byte _activeSoundBuf;
uint _soundBufSize;
byte *_soundBuffers[2];
void mixerProducerThread();
static int SDLCALL mixerProducerThreadEntry(void *arg);
void initThreadedMixer(Audio::MixerImpl *mixer, uint bufSize);
void deinitThreadedMixer();
#endif
FilesystemFactory *_fsFactory;
Common::SaveFileManager *_savefile;
Audio::MixerImpl *_mixer;
SDL_TimerID _timerID;
Common::TimerManager *_timer;
protected:
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(Common::Event &event, int x, int y); // overloaded by CE backend
void toggleMouseGrab();
virtual void internUpdateScreen(); // overloaded by CE backend
virtual bool loadGFXMode(); // overloaded by CE backend
virtual void unloadGFXMode(); // overloaded by CE backend
virtual bool 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 (_videoMode.aspectRatioCorrection ? real2Aspect(_videoMode.screenHeight) : _videoMode.screenHeight)
* _videoMode.scaleFactor;
}
void setupIcon();
void handleKbdMouse();
virtual bool remapKey(SDL_Event &ev, Common::Event &event);
void handleScalerHotkeys(const SDL_KeyboardEvent &key);
};
#endif
|