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 emit gameFailed();
208 }
209}
210
211void GameController::loadBIOS(const QString& path) {
212 if (m_bios == path) {
213 return;
214 }
215 m_bios = path;
216 if (m_gameOpen) {
217 closeGame();
218 openGame();
219 }
220}
221
222void GameController::loadPatch(const QString& path) {
223 m_patch = path;
224 if (m_gameOpen) {
225 closeGame();
226 openGame();
227 }
228}
229
230void GameController::closeGame() {
231 if (!m_gameOpen) {
232 return;
233 }
234 if (GBAThreadIsPaused(&m_threadContext)) {
235 GBAThreadUnpause(&m_threadContext);
236 }
237 GBAThreadEnd(&m_threadContext);
238 GBAThreadJoin(&m_threadContext);
239 if (m_threadContext.fname) {
240 free(const_cast<char*>(m_threadContext.fname));
241 m_threadContext.fname = nullptr;
242 }
243
244 m_patch = QString();
245
246 m_gameOpen = false;
247 emit gameStopped(&m_threadContext);
248}
249
250void GameController::crashGame(const QString& crashMessage) {
251 closeGame();
252 emit gameCrashed(crashMessage);
253}
254
255bool GameController::isPaused() {
256 if (!m_gameOpen) {
257 return false;
258 }
259 return GBAThreadIsPaused(&m_threadContext);
260}
261
262void GameController::setPaused(bool paused) {
263 if (paused == GBAThreadIsPaused(&m_threadContext)) {
264 return;
265 }
266 if (paused) {
267 GBAThreadPause(&m_threadContext);
268 emit gamePaused(&m_threadContext);
269 } else {
270 GBAThreadUnpause(&m_threadContext);
271 emit gameUnpaused(&m_threadContext);
272 }
273}
274
275void GameController::reset() {
276 GBAThreadReset(&m_threadContext);
277}
278
279void GameController::threadInterrupt() {
280 if (m_gameOpen) {
281 GBAThreadInterrupt(&m_threadContext);
282 }
283}
284
285void GameController::threadContinue() {
286 if (m_gameOpen) {
287 GBAThreadContinue(&m_threadContext);
288 }
289}
290
291void GameController::frameAdvance() {
292 m_pauseMutex.lock();
293 m_pauseAfterFrame = true;
294 setPaused(false);
295 m_pauseMutex.unlock();
296}
297
298void GameController::setRewind(bool enable, int capacity, int interval) {
299 if (m_gameOpen) {
300 threadInterrupt();
301 GBARewindSettingsChanged(&m_threadContext, enable ? capacity : 0, enable ? interval : 0);
302 threadContinue();
303 } else {
304 if (enable) {
305 m_threadContext.rewindBufferInterval = interval;
306 m_threadContext.rewindBufferCapacity = capacity;
307 } else {
308 m_threadContext.rewindBufferInterval = 0;
309 m_threadContext.rewindBufferCapacity = 0;
310 }
311 }
312}
313
314void GameController::rewind(int states) {
315 threadInterrupt();
316 if (!states) {
317 GBARewindAll(&m_threadContext);
318 } else {
319 GBARewind(&m_threadContext, states);
320 }
321 threadContinue();
322}
323
324void GameController::keyPressed(int key) {
325 int mappedKey = 1 << key;
326 m_activeKeys |= mappedKey;
327 updateKeys();
328}
329
330void GameController::keyReleased(int key) {
331 int mappedKey = 1 << key;
332 m_activeKeys &= ~mappedKey;
333 updateKeys();
334}
335
336void GameController::clearKeys() {
337 m_activeKeys = 0;
338 updateKeys();
339}
340
341void GameController::setAudioBufferSamples(int samples) {
342 threadInterrupt();
343 redoSamples(samples);
344 threadContinue();
345 QMetaObject::invokeMethod(m_audioProcessor, "setBufferSamples", Q_ARG(int, samples));
346}
347
348void GameController::setFPSTarget(float fps) {
349 threadInterrupt();
350 m_threadContext.fpsTarget = fps;
351 redoSamples(m_audioProcessor->getBufferSamples());
352 threadContinue();
353 QMetaObject::invokeMethod(m_audioProcessor, "inputParametersChanged");
354}
355
356void GameController::setSkipBIOS(bool set) {
357 threadInterrupt();
358 m_threadContext.skipBios = set;
359 threadContinue();
360}
361
362void GameController::loadState(int slot) {
363 threadInterrupt();
364 GBALoadState(m_threadContext.gba, m_threadContext.stateDir, slot);
365 threadContinue();
366 emit stateLoaded(&m_threadContext);
367 emit frameAvailable(m_drawContext);
368}
369
370void GameController::saveState(int slot) {
371 threadInterrupt();
372 GBASaveState(m_threadContext.gba, m_threadContext.stateDir, slot, true);
373 threadContinue();
374}
375
376void GameController::setVideoSync(bool set) {
377 m_videoSync = set;
378 if (!m_turbo) {
379 threadInterrupt();
380 m_threadContext.sync.videoFrameWait = set;
381 threadContinue();
382 }
383}
384
385void GameController::setAudioSync(bool set) {
386 m_audioSync = set;
387 if (!m_turbo) {
388 threadInterrupt();
389 m_threadContext.sync.audioWait = set;
390 threadContinue();
391 }
392}
393
394void GameController::setFrameskip(int skip) {
395 m_threadContext.frameskip = skip;
396}
397
398void GameController::setTurbo(bool set, bool forced) {
399 if (m_turboForced && !forced) {
400 return;
401 }
402 m_turbo = set;
403 m_turboForced = set && forced;
404 threadInterrupt();
405 m_threadContext.sync.audioWait = set ? false : m_audioSync;
406 m_threadContext.sync.videoFrameWait = set ? false : m_videoSync;
407 threadContinue();
408}
409
410void GameController::setAVStream(GBAAVStream* stream) {
411 threadInterrupt();
412 m_threadContext.stream = stream;
413 threadContinue();
414}
415
416void GameController::clearAVStream() {
417 threadInterrupt();
418 m_threadContext.stream = nullptr;
419 threadContinue();
420}
421
422void GameController::setRealTime() {
423 m_rtc.override = GameControllerRTC::NO_OVERRIDE;
424}
425
426void GameController::setFixedTime(const QDateTime& time) {
427 m_rtc.override = GameControllerRTC::FIXED;
428 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
429}
430
431void GameController::setFakeEpoch(const QDateTime& time) {
432 m_rtc.override = GameControllerRTC::FAKE_EPOCH;
433 m_rtc.value = time.toMSecsSinceEpoch() / 1000;
434}
435
436void GameController::updateKeys() {
437 int activeKeys = m_activeKeys;
438#ifdef BUILD_SDL
439 activeKeys |= m_activeButtons;
440#endif
441 m_threadContext.activeKeys = activeKeys;
442}
443
444void GameController::redoSamples(int samples) {
445#if RESAMPLE_LIBRARY != RESAMPLE_BLIP_BUF
446 float sampleRate = 0x8000;
447 float ratio;
448 if (m_threadContext.gba) {
449 sampleRate = m_threadContext.gba->audio.sampleRate;
450 }
451 ratio = GBAAudioCalculateRatio(sampleRate, m_threadContext.fpsTarget, 44100);
452 m_threadContext.audioBuffers = ceil(samples / ratio);
453#else
454 m_threadContext.audioBuffers = samples;
455#endif
456 if (m_threadContext.gba) {
457 GBAAudioResizeBuffer(&m_threadContext.gba->audio, m_threadContext.audioBuffers);
458 }
459}
460
461void GameController::setLogLevel(int levels) {
462 threadInterrupt();
463 m_logLevels = levels;
464 threadContinue();
465}
466
467void GameController::enableLogLevel(int levels) {
468 threadInterrupt();
469 m_logLevels |= levels;
470 threadContinue();
471}
472
473void GameController::disableLogLevel(int levels) {
474 threadInterrupt();
475 m_logLevels &= ~levels;
476 threadContinue();
477}
478
479#ifdef BUILD_SDL
480void GameController::testSDLEvents() {
481 if (!m_inputController) {
482 return;
483 }
484
485 m_activeButtons = m_inputController->testSDLEvents();
486 updateKeys();
487}
488#endif