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 MutexLock(&controller->m_threadContext.stateMutex);
113 controller->m_threadContext.state = THREAD_EXITING;
114 MutexUnlock(&controller->m_threadContext.stateMutex);
115 QMetaObject::invokeMethod(controller, "crashGame", Q_ARG(const QString&, QString().vsprintf(format, args)));
116 } else if (!(controller->m_logLevels & level)) {
117 return;
118 }
119 controller->postLog(level, QString().vsprintf(format, args));
120 };
121
122 m_audioThread->start(QThread::TimeCriticalPriority);
123 m_audioProcessor->moveToThread(m_audioThread);
124 connect(this, SIGNAL(gameStarted(GBAThread*)), m_audioProcessor, SLOT(start()));
125 connect(this, SIGNAL(gameStopped(GBAThread*)), m_audioProcessor, SLOT(pause()));
126 connect(this, SIGNAL(gamePaused(GBAThread*)), m_audioProcessor, SLOT(pause()));
127 connect(this, SIGNAL(gameUnpaused(GBAThread*)), m_audioProcessor, SLOT(start()));
128
129#ifdef BUILD_SDL
130 connect(this, SIGNAL(frameAvailable(const uint32_t*)), this, SLOT(testSDLEvents()));
131#endif
132}
133
134GameController::~GameController() {
135 m_audioThread->quit();
136 m_audioThread->wait();
137 disconnect();
138 closeGame();
139 delete m_renderer;
140 delete[] m_drawContext;
141}
142
143#ifdef USE_GDB_STUB
144ARMDebugger* GameController::debugger() {
145 return m_threadContext.debugger;
146}
147
148void GameController::setDebugger(ARMDebugger* debugger) {
149 threadInterrupt();
150 if (m_threadContext.debugger && GBAThreadHasStarted(&m_threadContext)) {
151 GBADetachDebugger(m_threadContext.gba);
152 }
153 m_threadContext.debugger = debugger;
154 if (m_threadContext.debugger && GBAThreadHasStarted(&m_threadContext)) {
155 GBAAttachDebugger(m_threadContext.gba, m_threadContext.debugger);
156 }
157 threadContinue();
158}
159#endif
160
161void GameController::loadGame(const QString& path, bool dirmode) {
162 closeGame();
163 if (!dirmode) {
164 QFile file(path);
165 if (!file.open(QIODevice::ReadOnly)) {
166 return;
167 }
168 file.close();
169 }
170
171 m_fname = path;
172 m_dirmode = dirmode;
173 openGame();
174}
175
176void GameController::openGame() {
177 m_gameOpen = true;
178
179 m_pauseAfterFrame = false;
180
181 if (m_turbo) {
182 m_threadContext.sync.videoFrameWait = false;
183 m_threadContext.sync.audioWait = false;
184 } else {
185 m_threadContext.sync.videoFrameWait = m_videoSync;
186 m_threadContext.sync.audioWait = m_audioSync;
187 }
188
189 m_threadContext.fname = strdup(m_fname.toLocal8Bit().constData());
190 if (m_dirmode) {
191 m_threadContext.gameDir = VDirOpen(m_threadContext.fname);
192 m_threadContext.stateDir = m_threadContext.gameDir;
193 } else {
194 m_threadContext.rom = VFileOpen(m_threadContext.fname, O_RDONLY);
195#if ENABLE_LIBZIP
196 m_threadContext.gameDir = VDirOpenZip(m_threadContext.fname, 0);
197#endif
198 }
199
200 if (!m_bios.isNull()) {
201 m_threadContext.bios = VFileOpen(m_bios.toLocal8Bit().constData(), O_RDONLY);
202 }
203
204 if (!m_patch.isNull()) {
205 m_threadContext.patch = VFileOpen(m_patch.toLocal8Bit().constData(), O_RDONLY);
206 }
207
208 if (!GBAThreadStart(&m_threadContext)) {
209 m_gameOpen = false;
210 }
211}
212
213void GameController::loadBIOS(const QString& path) {
214 if (m_bios == path) {
215 return;
216 }
217 m_bios = path;
218 if (m_gameOpen) {
219 closeGame();
220 openGame();
221 }
222}
223
224void GameController::loadPatch(const QString& path) {
225 m_patch = path;
226 if (m_gameOpen) {
227 closeGame();
228 openGame();
229 }
230}
231
232void GameController::closeGame() {
233 if (!m_gameOpen) {
234 return;
235 }
236 if (GBAThreadIsPaused(&m_threadContext)) {
237 GBAThreadUnpause(&m_threadContext);
238 }
239 GBAThreadEnd(&m_threadContext);
240 GBAThreadJoin(&m_threadContext);
241 if (m_threadContext.fname) {
242 free(const_cast<char*>(m_threadContext.fname));
243 m_threadContext.fname = nullptr;
244 }
245
246 m_patch = QString();
247
248 m_gameOpen = false;
249 emit gameStopped(&m_threadContext);
250}
251
252void GameController::crashGame(const QString& crashMessage) {
253 closeGame();
254 emit gameCrashed(crashMessage);
255}
256
257bool GameController::isPaused() {
258 if (!m_gameOpen) {
259 return false;
260 }
261 return GBAThreadIsPaused(&m_threadContext);
262}
263
264void GameController::setPaused(bool paused) {
265 if (paused == GBAThreadIsPaused(&m_threadContext)) {
266 return;
267 }
268 if (paused) {
269 GBAThreadPause(&m_threadContext);
270 emit gamePaused(&m_threadContext);
271 } else {
272 GBAThreadUnpause(&m_threadContext);
273 emit gameUnpaused(&m_threadContext);
274 }
275}
276
277void GameController::reset() {
278 GBAThreadReset(&m_threadContext);
279}
280
281void GameController::threadInterrupt() {
282 if (m_gameOpen) {
283 GBAThreadInterrupt(&m_threadContext);
284 }
285}
286
287void GameController::threadContinue() {
288 if (m_gameOpen) {
289 GBAThreadContinue(&m_threadContext);
290 }
291}
292
293void GameController::frameAdvance() {
294 m_pauseMutex.lock();
295 m_pauseAfterFrame = true;
296 setPaused(false);
297 m_pauseMutex.unlock();
298}
299
300void GameController::setRewind(bool enable, int capacity, int interval) {
301 if (m_gameOpen) {
302 threadInterrupt();
303 GBARewindSettingsChanged(&m_threadContext, enable ? capacity : 0, enable ? interval : 0);
304 threadContinue();
305 } else {
306 if (enable) {
307 m_threadContext.rewindBufferInterval = interval;
308 m_threadContext.rewindBufferCapacity = capacity;
309 } else {
310 m_threadContext.rewindBufferInterval = 0;
311 m_threadContext.rewindBufferCapacity = 0;
312 }
313 }
314}
315
316void GameController::rewind(int states) {
317 threadInterrupt();
318 if (!states) {
319 GBARewindAll(&m_threadContext);
320 } else {
321 GBARewind(&m_threadContext, states);
322 }
323 threadContinue();
324}
325
326void GameController::keyPressed(int key) {
327 int mappedKey = 1 << key;
328 m_activeKeys |= mappedKey;
329 updateKeys();
330}
331
332void GameController::keyReleased(int key) {
333 int mappedKey = 1 << key;
334 m_activeKeys &= ~mappedKey;
335 updateKeys();
336}
337
338void GameController::clearKeys() {
339 m_activeKeys = 0;
340 updateKeys();
341}
342
343void GameController::setAudioBufferSamples(int samples) {
344 threadInterrupt();
345 redoSamples(samples);
346 threadContinue();
347 QMetaObject::invokeMethod(m_audioProcessor, "setBufferSamples", Q_ARG(int, samples));
348}
349
350void GameController::setFPSTarget(float fps) {
351 threadInterrupt();
352 m_threadContext.fpsTarget = fps;
353 redoSamples(m_audioProcessor->getBufferSamples());
354 threadContinue();
355 QMetaObject::invokeMethod(m_audioProcessor, "inputParametersChanged");
356}
357
358void GameController::setSkipBIOS(bool set) {
359 threadInterrupt();
360 m_threadContext.skipBios = set;
361 threadContinue();
362}
363
364void GameController::loadState(int slot) {
365 threadInterrupt();
366 GBALoadState(m_threadContext.gba, m_threadContext.stateDir, slot);
367 threadContinue();
368 emit stateLoaded(&m_threadContext);
369 emit frameAvailable(m_drawContext);
370}
371
372void GameController::saveState(int slot) {
373 threadInterrupt();
374 GBASaveState(m_threadContext.gba, m_threadContext.stateDir, slot, true);
375 threadContinue();
376}
377
378void GameController::setVideoSync(bool set) {
379 m_videoSync = set;
380 if (!m_turbo) {
381 threadInterrupt();
382 m_threadContext.sync.videoFrameWait = set;
383 threadContinue();
384 }
385}
386
387void GameController::setAudioSync(bool set) {
388 m_audioSync = set;
389 if (!m_turbo) {
390 threadInterrupt();
391 m_threadContext.sync.audioWait = set;
392 threadContinue();
393 }
394}
395
396void GameController::setFrameskip(int skip) {
397 m_threadContext.frameskip = skip;
398}
399
400void GameController::setTurbo(bool set, bool forced) {
401 if (m_turboForced && !forced) {
402 return;
403 }
404 m_turbo = set;
405 m_turboForced = set && forced;
406 threadInterrupt();
407 m_threadContext.sync.audioWait = set ? false : m_audioSync;
408 m_threadContext.sync.videoFrameWait = set ? false : m_videoSync;
409 threadContinue();
410}
411
412void GameController::setAVStream(GBAAVStream* stream) {
413 threadInterrupt();
414 m_threadContext.stream = stream;
415 threadContinue();
416}
417
418void GameController::clearAVStream() {
419 threadInterrupt();
420 m_threadContext.stream = nullptr;
421 threadContinue();
422}
423
424void GameController::setRealTime() {
425 m_rtc.override = GameControllerRTC::NO_OVERRIDE;
426}
427
428void GameController::setFixedTime(const QDateTime& time) {
429 m_rtc.override = GameControllerRTC::FIXED;
430 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
431}
432
433void GameController::setFakeEpoch(const QDateTime& time) {
434 m_rtc.override = GameControllerRTC::FAKE_EPOCH;
435 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
436}
437
438void GameController::updateKeys() {
439 int activeKeys = m_activeKeys;
440#ifdef BUILD_SDL
441 activeKeys |= m_activeButtons;
442#endif
443 m_threadContext.activeKeys = activeKeys;
444}
445
446void GameController::redoSamples(int samples) {
447#if RESAMPLE_LIBRARY != RESAMPLE_BLIP_BUF
448 float sampleRate = 0x8000;
449 float ratio;
450 if (m_threadContext.gba) {
451 sampleRate = m_threadContext.gba->audio.sampleRate;
452 }
453 ratio = GBAAudioCalculateRatio(sampleRate, m_threadContext.fpsTarget, 44100);
454 m_threadContext.audioBuffers = ceil(samples / ratio);
455#else
456 m_threadContext.audioBuffers = samples;
457#endif
458 if (m_threadContext.gba) {
459 GBAAudioResizeBuffer(&m_threadContext.gba->audio, m_threadContext.audioBuffers);
460 }
461}
462
463void GameController::setLogLevel(int levels) {
464 threadInterrupt();
465 m_logLevels = levels;
466 threadContinue();
467}
468
469void GameController::enableLogLevel(int levels) {
470 threadInterrupt();
471 m_logLevels |= levels;
472 threadContinue();
473}
474
475void GameController::disableLogLevel(int levels) {
476 threadInterrupt();
477 m_logLevels &= ~levels;
478 threadContinue();
479}
480
481#ifdef BUILD_SDL
482void GameController::testSDLEvents() {
483 if (!m_inputController) {
484 return;
485 }
486
487 m_activeButtons = m_inputController->testSDLEvents();
488 updateKeys();
489}
490#endif