src/platform/qt/GameController.cpp (view raw)
1/* Copyright (c) 2013-2014 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "GameController.h"
7
8#include "AudioProcessor.h"
9#include "InputController.h"
10
11#include <QDateTime>
12#include <QThread>
13
14#include <ctime>
15
16extern "C" {
17#include "gba.h"
18#include "gba-audio.h"
19#include "gba-serialize.h"
20#include "renderers/video-software.h"
21#include "util/vfs.h"
22}
23
24using namespace QGBA;
25using namespace std;
26
27GameController::GameController(QObject* parent)
28 : QObject(parent)
29 , m_drawContext(new uint32_t[256 * 256])
30 , m_threadContext()
31 , m_activeKeys(0)
32 , m_logLevels(0)
33 , m_gameOpen(false)
34 , m_audioThread(new QThread(this))
35 , m_audioProcessor(AudioProcessor::create())
36 , m_videoSync(VIDEO_SYNC)
37 , m_audioSync(AUDIO_SYNC)
38 , m_turbo(false)
39 , m_turboForced(false)
40 , m_inputController(nullptr)
41{
42 m_renderer = new GBAVideoSoftwareRenderer;
43 GBAVideoSoftwareRendererCreate(m_renderer);
44 m_renderer->outputBuffer = (color_t*) m_drawContext;
45 m_renderer->outputBufferStride = 256;
46 m_threadContext.state = THREAD_INITIALIZED;
47 m_threadContext.debugger = 0;
48 m_threadContext.frameskip = 0;
49 m_threadContext.bios = 0;
50 m_threadContext.renderer = &m_renderer->d;
51 m_threadContext.userData = this;
52 m_threadContext.rewindBufferCapacity = 0;
53 m_threadContext.logLevel = -1;
54
55 m_lux.p = this;
56 m_lux.sample = [] (GBALuminanceSource* context) {
57 GameControllerLux* lux = static_cast<GameControllerLux*>(context);
58 lux->value = 0xFF - lux->p->m_luxValue;
59 };
60
61 m_lux.readLuminance = [] (GBALuminanceSource* context) {
62 GameControllerLux* lux = static_cast<GameControllerLux*>(context);
63 return lux->value;
64 };
65
66 m_rtc.p = this;
67 m_rtc.override = GameControllerRTC::NO_OVERRIDE;
68 m_rtc.sample = [] (GBARTCSource* context) { };
69 m_rtc.unixTime = [] (GBARTCSource* context) -> time_t {
70 GameControllerRTC* rtc = static_cast<GameControllerRTC*>(context);
71 switch (rtc->override) {
72 case GameControllerRTC::NO_OVERRIDE:
73 default:
74 return time(nullptr);
75 case GameControllerRTC::FIXED:
76 return rtc->value;
77 case GameControllerRTC::FAKE_EPOCH:
78 return rtc->value + rtc->p->m_threadContext.gba->video.frameCounter * (int64_t) VIDEO_TOTAL_LENGTH / GBA_ARM7TDMI_FREQUENCY;
79 }
80 };
81
82 m_threadContext.startCallback = [] (GBAThread* context) {
83 GameController* controller = static_cast<GameController*>(context->userData);
84 controller->m_audioProcessor->setInput(context);
85 // Override the GBA object's log level to prevent stdout spew
86 context->gba->logLevel = GBA_LOG_FATAL;
87 context->gba->luminanceSource = &controller->m_lux;
88 context->gba->rtcSource = &controller->m_rtc;
89 controller->gameStarted(context);
90 };
91
92 m_threadContext.cleanCallback = [] (GBAThread* context) {
93 GameController* controller = static_cast<GameController*>(context->userData);
94 controller->gameStopped(context);
95 };
96
97 m_threadContext.frameCallback = [] (GBAThread* context) {
98 GameController* controller = static_cast<GameController*>(context->userData);
99 controller->m_pauseMutex.lock();
100 if (controller->m_pauseAfterFrame) {
101 GBAThreadPauseFromThread(context);
102 controller->m_pauseAfterFrame = false;
103 controller->gamePaused(&controller->m_threadContext);
104 }
105 controller->m_pauseMutex.unlock();
106 controller->frameAvailable(controller->m_drawContext);
107 };
108
109 m_threadContext.logHandler = [] (GBAThread* context, enum GBALogLevel level, const char* format, va_list args) {
110 GameController* controller = static_cast<GameController*>(context->userData);
111 if (level == GBA_LOG_FATAL) {
112 QMetaObject::invokeMethod(controller, "crashGame", Q_ARG(const QString&, QString().vsprintf(format, args)));
113 } else if (!(controller->m_logLevels & level)) {
114 return;
115 }
116 controller->postLog(level, QString().vsprintf(format, args));
117 };
118
119 m_audioThread->start(QThread::TimeCriticalPriority);
120 m_audioProcessor->moveToThread(m_audioThread);
121 connect(this, SIGNAL(gameStarted(GBAThread*)), m_audioProcessor, SLOT(start()));
122 connect(this, SIGNAL(gameStopped(GBAThread*)), m_audioProcessor, SLOT(pause()));
123 connect(this, SIGNAL(gamePaused(GBAThread*)), m_audioProcessor, SLOT(pause()));
124 connect(this, SIGNAL(gameUnpaused(GBAThread*)), m_audioProcessor, SLOT(start()));
125
126#ifdef BUILD_SDL
127 connect(this, SIGNAL(frameAvailable(const uint32_t*)), this, SLOT(testSDLEvents()));
128#endif
129}
130
131GameController::~GameController() {
132 m_audioThread->quit();
133 m_audioThread->wait();
134 disconnect();
135 closeGame();
136 delete m_renderer;
137 delete[] m_drawContext;
138}
139
140#ifdef USE_GDB_STUB
141ARMDebugger* GameController::debugger() {
142 return m_threadContext.debugger;
143}
144
145void GameController::setDebugger(ARMDebugger* debugger) {
146 threadInterrupt();
147 if (m_threadContext.debugger && GBAThreadHasStarted(&m_threadContext)) {
148 GBADetachDebugger(m_threadContext.gba);
149 }
150 m_threadContext.debugger = debugger;
151 if (m_threadContext.debugger && GBAThreadHasStarted(&m_threadContext)) {
152 GBAAttachDebugger(m_threadContext.gba, m_threadContext.debugger);
153 }
154 threadContinue();
155}
156#endif
157
158void GameController::loadGame(const QString& path, bool dirmode) {
159 closeGame();
160 if (!dirmode) {
161 QFile file(path);
162 if (!file.open(QIODevice::ReadOnly)) {
163 return;
164 }
165 file.close();
166 }
167
168 m_fname = path;
169 m_dirmode = dirmode;
170 openGame();
171}
172
173void GameController::openGame() {
174 m_gameOpen = true;
175
176 m_pauseAfterFrame = false;
177
178 if (m_turbo) {
179 m_threadContext.sync.videoFrameWait = false;
180 m_threadContext.sync.audioWait = false;
181 } else {
182 m_threadContext.sync.videoFrameWait = m_videoSync;
183 m_threadContext.sync.audioWait = m_audioSync;
184 }
185
186 m_threadContext.fname = strdup(m_fname.toLocal8Bit().constData());
187 if (m_dirmode) {
188 m_threadContext.gameDir = VDirOpen(m_threadContext.fname);
189 m_threadContext.stateDir = m_threadContext.gameDir;
190 } else {
191 m_threadContext.rom = VFileOpen(m_threadContext.fname, O_RDONLY);
192#if ENABLE_LIBZIP
193 m_threadContext.gameDir = VDirOpenZip(m_threadContext.fname, 0);
194#endif
195 }
196
197 if (!m_bios.isNull()) {
198 m_threadContext.bios = VFileOpen(m_bios.toLocal8Bit().constData(), O_RDONLY);
199 }
200
201 if (!m_patch.isNull()) {
202 m_threadContext.patch = VFileOpen(m_patch.toLocal8Bit().constData(), O_RDONLY);
203 }
204
205 if (!GBAThreadStart(&m_threadContext)) {
206 m_gameOpen = false;
207 }
208}
209
210void GameController::loadBIOS(const QString& path) {
211 if (m_bios == path) {
212 return;
213 }
214 m_bios = path;
215 if (m_gameOpen) {
216 closeGame();
217 openGame();
218 }
219}
220
221void GameController::loadPatch(const QString& path) {
222 m_patch = path;
223 if (m_gameOpen) {
224 closeGame();
225 openGame();
226 }
227}
228
229void GameController::closeGame() {
230 if (!m_gameOpen) {
231 return;
232 }
233 if (GBAThreadIsPaused(&m_threadContext)) {
234 GBAThreadUnpause(&m_threadContext);
235 }
236 GBAThreadEnd(&m_threadContext);
237 GBAThreadJoin(&m_threadContext);
238 if (m_threadContext.fname) {
239 free(const_cast<char*>(m_threadContext.fname));
240 m_threadContext.fname = nullptr;
241 }
242
243 m_patch = QString();
244
245 m_gameOpen = false;
246 emit gameStopped(&m_threadContext);
247}
248
249void GameController::crashGame(const QString& crashMessage) {
250 closeGame();
251 emit gameCrashed(crashMessage);
252}
253
254bool GameController::isPaused() {
255 if (!m_gameOpen) {
256 return false;
257 }
258 return GBAThreadIsPaused(&m_threadContext);
259}
260
261void GameController::setPaused(bool paused) {
262 if (paused == GBAThreadIsPaused(&m_threadContext)) {
263 return;
264 }
265 if (paused) {
266 GBAThreadPause(&m_threadContext);
267 emit gamePaused(&m_threadContext);
268 } else {
269 GBAThreadUnpause(&m_threadContext);
270 emit gameUnpaused(&m_threadContext);
271 }
272}
273
274void GameController::reset() {
275 GBAThreadReset(&m_threadContext);
276}
277
278void GameController::threadInterrupt() {
279 if (m_gameOpen) {
280 GBAThreadInterrupt(&m_threadContext);
281 }
282}
283
284void GameController::threadContinue() {
285 if (m_gameOpen) {
286 GBAThreadContinue(&m_threadContext);
287 }
288}
289
290void GameController::frameAdvance() {
291 m_pauseMutex.lock();
292 m_pauseAfterFrame = true;
293 setPaused(false);
294 m_pauseMutex.unlock();
295}
296
297void GameController::setRewind(bool enable, int capacity, int interval) {
298 if (m_gameOpen) {
299 threadInterrupt();
300 GBARewindSettingsChanged(&m_threadContext, enable ? capacity : 0, enable ? interval : 0);
301 threadContinue();
302 } else {
303 if (enable) {
304 m_threadContext.rewindBufferInterval = interval;
305 m_threadContext.rewindBufferCapacity = capacity;
306 } else {
307 m_threadContext.rewindBufferInterval = 0;
308 m_threadContext.rewindBufferCapacity = 0;
309 }
310 }
311}
312
313void GameController::rewind(int states) {
314 threadInterrupt();
315 if (!states) {
316 GBARewindAll(&m_threadContext);
317 } else {
318 GBARewind(&m_threadContext, states);
319 }
320 threadContinue();
321}
322
323void GameController::keyPressed(int key) {
324 int mappedKey = 1 << key;
325 m_activeKeys |= mappedKey;
326 updateKeys();
327}
328
329void GameController::keyReleased(int key) {
330 int mappedKey = 1 << key;
331 m_activeKeys &= ~mappedKey;
332 updateKeys();
333}
334
335void GameController::clearKeys() {
336 m_activeKeys = 0;
337 updateKeys();
338}
339
340void GameController::setAudioBufferSamples(int samples) {
341 threadInterrupt();
342 redoSamples(samples);
343 threadContinue();
344 QMetaObject::invokeMethod(m_audioProcessor, "setBufferSamples", Q_ARG(int, samples));
345}
346
347void GameController::setFPSTarget(float fps) {
348 threadInterrupt();
349 m_threadContext.fpsTarget = fps;
350 redoSamples(m_audioProcessor->getBufferSamples());
351 threadContinue();
352 QMetaObject::invokeMethod(m_audioProcessor, "inputParametersChanged");
353}
354
355void GameController::setSkipBIOS(bool set) {
356 threadInterrupt();
357 m_threadContext.skipBios = set;
358 threadContinue();
359}
360
361void GameController::loadState(int slot) {
362 threadInterrupt();
363 GBALoadState(m_threadContext.gba, m_threadContext.stateDir, slot);
364 threadContinue();
365 emit stateLoaded(&m_threadContext);
366 emit frameAvailable(m_drawContext);
367}
368
369void GameController::saveState(int slot) {
370 threadInterrupt();
371 GBASaveState(m_threadContext.gba, m_threadContext.stateDir, slot, true);
372 threadContinue();
373}
374
375void GameController::setVideoSync(bool set) {
376 m_videoSync = set;
377 if (!m_turbo) {
378 threadInterrupt();
379 m_threadContext.sync.videoFrameWait = set;
380 threadContinue();
381 }
382}
383
384void GameController::setAudioSync(bool set) {
385 m_audioSync = set;
386 if (!m_turbo) {
387 threadInterrupt();
388 m_threadContext.sync.audioWait = set;
389 threadContinue();
390 }
391}
392
393void GameController::setFrameskip(int skip) {
394 m_threadContext.frameskip = skip;
395}
396
397void GameController::setTurbo(bool set, bool forced) {
398 if (m_turboForced && !forced) {
399 return;
400 }
401 m_turbo = set;
402 m_turboForced = set && forced;
403 threadInterrupt();
404 m_threadContext.sync.audioWait = set ? false : m_audioSync;
405 m_threadContext.sync.videoFrameWait = set ? false : m_videoSync;
406 threadContinue();
407}
408
409void GameController::setAVStream(GBAAVStream* stream) {
410 threadInterrupt();
411 m_threadContext.stream = stream;
412 threadContinue();
413}
414
415void GameController::clearAVStream() {
416 threadInterrupt();
417 m_threadContext.stream = nullptr;
418 threadContinue();
419}
420
421void GameController::setRealTime() {
422 m_rtc.override = GameControllerRTC::NO_OVERRIDE;
423}
424
425void GameController::setFixedTime(const QDateTime& time) {
426 m_rtc.override = GameControllerRTC::FIXED;
427 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
428}
429
430void GameController::setFakeEpoch(const QDateTime& time) {
431 m_rtc.override = GameControllerRTC::FAKE_EPOCH;
432 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
433}
434
435void GameController::updateKeys() {
436 int activeKeys = m_activeKeys;
437#ifdef BUILD_SDL
438 activeKeys |= m_activeButtons;
439#endif
440 m_threadContext.activeKeys = activeKeys;
441}
442
443void GameController::redoSamples(int samples) {
444#if RESAMPLE_LIBRARY != RESAMPLE_BLIP_BUF
445 float sampleRate = 0x8000;
446 float ratio;
447 if (m_threadContext.gba) {
448 sampleRate = m_threadContext.gba->audio.sampleRate;
449 }
450 ratio = GBAAudioCalculateRatio(sampleRate, m_threadContext.fpsTarget, 44100);
451 m_threadContext.audioBuffers = ceil(samples / ratio);
452#else
453 m_threadContext.audioBuffers = samples;
454#endif
455 if (m_threadContext.gba) {
456 GBAAudioResizeBuffer(&m_threadContext.gba->audio, m_threadContext.audioBuffers);
457 }
458}
459
460void GameController::setLogLevel(int levels) {
461 threadInterrupt();
462 m_logLevels = levels;
463 threadContinue();
464}
465
466void GameController::enableLogLevel(int levels) {
467 threadInterrupt();
468 m_logLevels |= levels;
469 threadContinue();
470}
471
472void GameController::disableLogLevel(int levels) {
473 threadInterrupt();
474 m_logLevels &= ~levels;
475 threadContinue();
476}
477
478#ifdef BUILD_SDL
479void GameController::testSDLEvents() {
480 if (!m_inputController) {
481 return;
482 }
483
484 m_activeButtons = m_inputController->testSDLEvents();
485 updateKeys();
486}
487#endif