src/gb/core.c (view raw)
1/* Copyright (c) 2013-2016 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 <mgba/gb/core.h>
7
8#include <mgba/core/core.h>
9#include <mgba/internal/debugger/symbols.h>
10#include <mgba/internal/gb/cheats.h>
11#include <mgba/internal/gb/debugger/debugger.h>
12#include <mgba/internal/gb/debugger/symbols.h>
13#include <mgba/internal/gb/extra/cli.h>
14#include <mgba/internal/gb/io.h>
15#include <mgba/internal/gb/gb.h>
16#include <mgba/internal/gb/mbc.h>
17#include <mgba/internal/gb/overrides.h>
18#include <mgba/internal/gb/renderers/software.h>
19#include <mgba/internal/gb/renderers/proxy.h>
20#include <mgba/internal/gb/serialize.h>
21#include <mgba/internal/sm83/sm83.h>
22#include <mgba/internal/sm83/debugger/debugger.h>
23#include <mgba-util/crc32.h>
24#include <mgba-util/memory.h>
25#include <mgba-util/patch.h>
26#include <mgba-util/vfs.h>
27
28static const struct mCoreChannelInfo _GBVideoLayers[] = {
29 { GB_LAYER_BACKGROUND, "bg", "Background", NULL },
30 { GB_LAYER_WINDOW, "bgwin", "Window", NULL },
31 { GB_LAYER_OBJ, "obj", "Objects", NULL },
32};
33
34static const struct mCoreChannelInfo _GBAudioChannels[] = {
35 { 0, "ch1", "Channel 1", "Square/Sweep" },
36 { 1, "ch2", "Channel 2", "Square" },
37 { 2, "ch3", "Channel 3", "PCM" },
38 { 3, "ch4", "Channel 4", "Noise" },
39};
40
41static const struct mCoreMemoryBlock _GBMemoryBlocks[] = {
42 { -1, "mem", "All", "All", 0, 0x10000, 0x10000, mCORE_MEMORY_VIRTUAL },
43 { GB_REGION_CART_BANK0, "cart0", "ROM Bank", "Game Pak (32kiB)", GB_BASE_CART_BANK0, GB_BASE_CART_BANK0 + GB_SIZE_CART_BANK0 * 2, 0x800000, mCORE_MEMORY_READ | mCORE_MEMORY_WORM | mCORE_MEMORY_MAPPED, 511, GB_BASE_CART_BANK0 + GB_SIZE_CART_BANK0 },
44 { GB_REGION_VRAM, "vram", "VRAM", "Video RAM (8kiB)", GB_BASE_VRAM, GB_BASE_VRAM + GB_SIZE_VRAM, GB_SIZE_VRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
45 { GB_REGION_EXTERNAL_RAM, "sram", "SRAM", "External RAM (8kiB)", GB_BASE_EXTERNAL_RAM, GB_BASE_EXTERNAL_RAM + GB_SIZE_EXTERNAL_RAM, GB_SIZE_EXTERNAL_RAM * 4, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 3 },
46 { GB_REGION_WORKING_RAM_BANK0, "wram", "WRAM", "Working RAM (8kiB)", GB_BASE_WORKING_RAM_BANK0, GB_BASE_WORKING_RAM_BANK0 + GB_SIZE_WORKING_RAM_BANK0 * 2 , GB_SIZE_WORKING_RAM_BANK0 * 2, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
47 { GB_BASE_OAM, "oam", "OAM", "OBJ Attribute Memory", GB_BASE_OAM, GB_BASE_OAM + GB_SIZE_OAM, GB_SIZE_OAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
48 { GB_BASE_IO, "io", "MMIO", "Memory-Mapped I/O", GB_BASE_IO, GB_BASE_IO + GB_SIZE_IO, GB_SIZE_IO, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
49 { GB_BASE_HRAM, "hram", "HRAM", "High RAM", GB_BASE_HRAM, GB_BASE_HRAM + GB_SIZE_HRAM, GB_SIZE_HRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
50};
51
52static const struct mCoreMemoryBlock _GBCMemoryBlocks[] = {
53 { -1, "mem", "All", "All", 0, 0x10000, 0x10000, mCORE_MEMORY_VIRTUAL },
54 { GB_REGION_CART_BANK0, "cart0", "ROM Bank", "Game Pak (32kiB)", GB_BASE_CART_BANK0, GB_BASE_CART_BANK0 + GB_SIZE_CART_BANK0 * 2, 0x800000, mCORE_MEMORY_READ | mCORE_MEMORY_WORM | mCORE_MEMORY_MAPPED, 511, GB_BASE_CART_BANK0 + GB_SIZE_CART_BANK0 },
55 { GB_REGION_VRAM, "vram", "VRAM", "Video RAM (8kiB)", GB_BASE_VRAM, GB_BASE_VRAM + GB_SIZE_VRAM, GB_SIZE_VRAM * 2, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 1 },
56 { GB_REGION_EXTERNAL_RAM, "sram", "SRAM", "External RAM (8kiB)", GB_BASE_EXTERNAL_RAM, GB_BASE_EXTERNAL_RAM + GB_SIZE_EXTERNAL_RAM, GB_SIZE_EXTERNAL_RAM * 4, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 3 },
57 { GB_REGION_WORKING_RAM_BANK0, "wram", "WRAM", "Working RAM (8kiB)", GB_BASE_WORKING_RAM_BANK0, GB_BASE_WORKING_RAM_BANK0 + GB_SIZE_WORKING_RAM_BANK0 * 2, GB_SIZE_WORKING_RAM_BANK0 * 8, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 7, GB_BASE_WORKING_RAM_BANK0 + GB_SIZE_WORKING_RAM_BANK0 },
58 { GB_BASE_OAM, "oam", "OAM", "OBJ Attribute Memory", GB_BASE_OAM, GB_BASE_OAM + GB_SIZE_OAM, GB_SIZE_OAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
59 { GB_BASE_IO, "io", "MMIO", "Memory-Mapped I/O", GB_BASE_IO, GB_BASE_IO + GB_SIZE_IO, GB_SIZE_IO, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
60 { GB_BASE_HRAM, "hram", "HRAM", "High RAM", GB_BASE_HRAM, GB_BASE_HRAM + GB_SIZE_HRAM, GB_SIZE_HRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
61};
62
63struct mVideoLogContext;
64struct GBCore {
65 struct mCore d;
66 struct GBVideoRenderer dummyRenderer;
67 struct GBVideoSoftwareRenderer renderer;
68#ifndef MINIMAL_CORE
69 struct GBVideoProxyRenderer proxyRenderer;
70 struct mVideoLogContext* logContext;
71#endif
72 struct mCoreCallbacks logCallbacks;
73 uint8_t keys;
74 struct mCPUComponent* components[CPU_COMPONENT_MAX];
75 const struct Configuration* overrides;
76 struct mDebuggerPlatform* debuggerPlatform;
77 struct mCheatDevice* cheatDevice;
78 struct mCoreMemoryBlock memoryBlocks[8];
79};
80
81static bool _GBCoreInit(struct mCore* core) {
82 struct GBCore* gbcore = (struct GBCore*) core;
83
84 struct SM83Core* cpu = anonymousMemoryMap(sizeof(struct SM83Core));
85 struct GB* gb = anonymousMemoryMap(sizeof(struct GB));
86 if (!cpu || !gb) {
87 free(cpu);
88 free(gb);
89 return false;
90 }
91 core->cpu = cpu;
92 core->board = gb;
93 core->timing = &gb->timing;
94 gbcore->overrides = NULL;
95 gbcore->debuggerPlatform = NULL;
96 gbcore->cheatDevice = NULL;
97#ifndef MINIMAL_CORE
98 gbcore->logContext = NULL;
99#endif
100 memcpy(gbcore->memoryBlocks, _GBMemoryBlocks, sizeof(_GBMemoryBlocks));
101
102 GBCreate(gb);
103 memset(gbcore->components, 0, sizeof(gbcore->components));
104 SM83SetComponents(cpu, &gb->d, CPU_COMPONENT_MAX, gbcore->components);
105 SM83Init(cpu);
106 mRTCGenericSourceInit(&core->rtc, core);
107 gb->memory.rtc = &core->rtc.d;
108
109 GBVideoDummyRendererCreate(&gbcore->dummyRenderer);
110 GBVideoAssociateRenderer(&gb->video, &gbcore->dummyRenderer);
111
112 GBVideoSoftwareRendererCreate(&gbcore->renderer);
113 gbcore->renderer.outputBuffer = NULL;
114
115#ifndef MINIMAL_CORE
116 gbcore->proxyRenderer.logger = NULL;
117#endif
118
119 gbcore->keys = 0;
120 gb->keySource = &gbcore->keys;
121
122#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
123 mDirectorySetInit(&core->dirs);
124#endif
125
126 return true;
127}
128
129static void _GBCoreDeinit(struct mCore* core) {
130 SM83Deinit(core->cpu);
131 GBDestroy(core->board);
132 mappedMemoryFree(core->cpu, sizeof(struct SM83Core));
133 mappedMemoryFree(core->board, sizeof(struct GB));
134#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
135 mDirectorySetDeinit(&core->dirs);
136#endif
137#ifdef USE_DEBUGGERS
138 if (core->symbolTable) {
139 mDebuggerSymbolTableDestroy(core->symbolTable);
140 }
141#endif
142
143 struct GBCore* gbcore = (struct GBCore*) core;
144 free(gbcore->debuggerPlatform);
145 if (gbcore->cheatDevice) {
146 mCheatDeviceDestroy(gbcore->cheatDevice);
147 }
148 mCoreConfigFreeOpts(&core->opts);
149 free(core);
150}
151
152static enum mPlatform _GBCorePlatform(const struct mCore* core) {
153 UNUSED(core);
154 return mPLATFORM_GB;
155}
156
157static bool _GBCoreSupportsFeature(const struct mCore* core, enum mCoreFeature feature) {
158 UNUSED(core);
159 switch (feature) {
160 default:
161 return false;
162 }
163}
164
165static void _GBCoreSetSync(struct mCore* core, struct mCoreSync* sync) {
166 struct GB* gb = core->board;
167 gb->sync = sync;
168}
169
170static void _GBCoreLoadConfig(struct mCore* core, const struct mCoreConfig* config) {
171 UNUSED(config);
172
173 struct GB* gb = core->board;
174 if (core->opts.mute) {
175 gb->audio.masterVolume = 0;
176 } else {
177 gb->audio.masterVolume = core->opts.volume;
178 }
179 gb->video.frameskip = core->opts.frameskip;
180
181 int color;
182 if (mCoreConfigGetIntValue(config, "gb.pal[0]", &color)) {
183 GBVideoSetPalette(&gb->video, 0, color);
184 }
185 if (mCoreConfigGetIntValue(config, "gb.pal[1]", &color)) {
186 GBVideoSetPalette(&gb->video, 1, color);
187 }
188 if (mCoreConfigGetIntValue(config, "gb.pal[2]", &color)) {
189 GBVideoSetPalette(&gb->video, 2, color);
190 }
191 if (mCoreConfigGetIntValue(config, "gb.pal[3]", &color)) {
192 GBVideoSetPalette(&gb->video, 3, color);
193 }
194 if (mCoreConfigGetIntValue(config, "gb.pal[4]", &color)) {
195 GBVideoSetPalette(&gb->video, 4, color);
196 }
197 if (mCoreConfigGetIntValue(config, "gb.pal[5]", &color)) {
198 GBVideoSetPalette(&gb->video, 5, color);
199 }
200 if (mCoreConfigGetIntValue(config, "gb.pal[6]", &color)) {
201 GBVideoSetPalette(&gb->video, 6, color);
202 }
203 if (mCoreConfigGetIntValue(config, "gb.pal[7]", &color)) {
204 GBVideoSetPalette(&gb->video, 7, color);
205 }
206 if (mCoreConfigGetIntValue(config, "gb.pal[8]", &color)) {
207 GBVideoSetPalette(&gb->video, 8, color);
208 }
209 if (mCoreConfigGetIntValue(config, "gb.pal[9]", &color)) {
210 GBVideoSetPalette(&gb->video, 9, color);
211 }
212 if (mCoreConfigGetIntValue(config, "gb.pal[10]", &color)) {
213 GBVideoSetPalette(&gb->video, 10, color);
214 }
215 if (mCoreConfigGetIntValue(config, "gb.pal[11]", &color)) {
216 GBVideoSetPalette(&gb->video, 11, color);
217 }
218
219 mCoreConfigCopyValue(&core->config, config, "gb.bios");
220 mCoreConfigCopyValue(&core->config, config, "sgb.bios");
221 mCoreConfigCopyValue(&core->config, config, "gbc.bios");
222 mCoreConfigCopyValue(&core->config, config, "gb.model");
223 mCoreConfigCopyValue(&core->config, config, "sgb.model");
224 mCoreConfigCopyValue(&core->config, config, "cgb.model");
225 mCoreConfigCopyValue(&core->config, config, "cgb.hybridModel");
226 mCoreConfigCopyValue(&core->config, config, "cgb.sgbModel");
227 mCoreConfigCopyValue(&core->config, config, "useCgbColors");
228 mCoreConfigCopyValue(&core->config, config, "allowOpposingDirections");
229
230 int fakeBool = 0;
231 mCoreConfigGetIntValue(config, "allowOpposingDirections", &fakeBool);
232 gb->allowOpposingDirections = fakeBool;
233
234 if (mCoreConfigGetIntValue(config, "sgb.borders", &fakeBool)) {
235 gb->video.sgbBorders = fakeBool;
236 gb->video.renderer->enableSGBBorder(gb->video.renderer, fakeBool);
237 }
238
239#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
240 struct GBCore* gbcore = (struct GBCore*) core;
241 gbcore->overrides = mCoreConfigGetOverridesConst(config);
242#endif
243}
244
245static void _GBCoreReloadConfigOption(struct mCore* core, const char* option, const struct mCoreConfig* config) {
246 struct GB* gb = core->board;
247 if (!config) {
248 config = &core->config;
249 }
250
251 if (!option) {
252 // Reload options from opts
253 if (core->opts.mute) {
254 gb->audio.masterVolume = 0;
255 } else {
256 gb->audio.masterVolume = core->opts.volume;
257 }
258 gb->video.frameskip = core->opts.frameskip;
259 return;
260 }
261
262 int fakeBool;
263 if (strcmp("mute", option) == 0) {
264 if (mCoreConfigGetIntValue(config, "mute", &fakeBool)) {
265 core->opts.mute = fakeBool;
266
267 if (core->opts.mute) {
268 gb->audio.masterVolume = 0;
269 } else {
270 gb->audio.masterVolume = core->opts.volume;
271 }
272 }
273 return;
274 }
275 if (strcmp("volume", option) == 0) {
276 if (mCoreConfigGetIntValue(config, "volume", &core->opts.volume) && !core->opts.mute) {
277 gb->audio.masterVolume = core->opts.volume;
278 }
279 return;
280 }
281 if (strcmp("frameskip", option) == 0) {
282 if (mCoreConfigGetIntValue(config, "frameskip", &core->opts.frameskip)) {
283 gb->video.frameskip = core->opts.frameskip;
284 }
285 return;
286 }
287 if (strcmp("allowOpposingDirections", option) == 0) {
288 if (config != &core->config) {
289 mCoreConfigCopyValue(&core->config, config, "allowOpposingDirections");
290 }
291 if (mCoreConfigGetIntValue(config, "allowOpposingDirections", &fakeBool)) {
292 gb->allowOpposingDirections = fakeBool;
293 }
294 return;
295 }
296 if (strcmp("sgb.borders", option) == 0) {
297 if (mCoreConfigGetIntValue(config, "sgb.borders", &fakeBool)) {
298 gb->video.sgbBorders = fakeBool;
299 gb->video.renderer->enableSGBBorder(gb->video.renderer, fakeBool);
300 }
301 }
302}
303
304static void _GBCoreDesiredVideoDimensions(const struct mCore* core, unsigned* width, unsigned* height) {
305 const struct GB* gb = core->board;
306 if (gb && (!(gb->model & GB_MODEL_SGB) || !gb->video.sgbBorders)) {
307 *width = GB_VIDEO_HORIZONTAL_PIXELS;
308 *height = GB_VIDEO_VERTICAL_PIXELS;
309 } else {
310 *width = 256;
311 *height = 224;
312 }
313}
314
315static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t stride) {
316 struct GBCore* gbcore = (struct GBCore*) core;
317 gbcore->renderer.outputBuffer = buffer;
318 gbcore->renderer.outputBufferStride = stride;
319}
320
321static void _GBCoreSetVideoGLTex(struct mCore* core, unsigned texid) {
322 UNUSED(core);
323 UNUSED(texid);
324}
325
326static void _GBCoreGetPixels(struct mCore* core, const void** buffer, size_t* stride) {
327 struct GBCore* gbcore = (struct GBCore*) core;
328 gbcore->renderer.d.getPixels(&gbcore->renderer.d, stride, buffer);
329}
330
331static void _GBCorePutPixels(struct mCore* core, const void* buffer, size_t stride) {
332 struct GBCore* gbcore = (struct GBCore*) core;
333 gbcore->renderer.d.putPixels(&gbcore->renderer.d, stride, buffer);
334}
335
336static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
337 struct GB* gb = core->board;
338 switch (ch) {
339 case 0:
340 return gb->audio.left;
341 case 1:
342 return gb->audio.right;
343 default:
344 return NULL;
345 }
346}
347
348static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
349 struct GB* gb = core->board;
350 GBAudioResizeBuffer(&gb->audio, samples);
351}
352
353static size_t _GBCoreGetAudioBufferSize(struct mCore* core) {
354 struct GB* gb = core->board;
355 return gb->audio.samples;
356}
357
358static void _GBCoreAddCoreCallbacks(struct mCore* core, struct mCoreCallbacks* coreCallbacks) {
359 struct GB* gb = core->board;
360 *mCoreCallbacksListAppend(&gb->coreCallbacks) = *coreCallbacks;
361}
362
363static void _GBCoreClearCoreCallbacks(struct mCore* core) {
364 struct GB* gb = core->board;
365 mCoreCallbacksListClear(&gb->coreCallbacks);
366}
367
368static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
369 struct GB* gb = core->board;
370 gb->stream = stream;
371 if (stream && stream->videoDimensionsChanged) {
372 unsigned width, height;
373 core->desiredVideoDimensions(core, &width, &height);
374 stream->videoDimensionsChanged(stream, width, height);
375 }
376}
377
378static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
379 return GBLoadROM(core->board, vf);
380}
381
382static bool _GBCoreLoadBIOS(struct mCore* core, struct VFile* vf, int type) {
383 UNUSED(type);
384 GBLoadBIOS(core->board, vf);
385 return true;
386}
387
388static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
389 return GBLoadSave(core->board, vf);
390}
391
392static bool _GBCoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
393 struct GB* gb = core->board;
394 GBSavedataMask(gb, vf, false);
395 return true; // TODO: Return a real value
396}
397
398static bool _GBCoreLoadPatch(struct mCore* core, struct VFile* vf) {
399 if (!vf) {
400 return false;
401 }
402 struct Patch patch;
403 if (!loadPatch(vf, &patch)) {
404 return false;
405 }
406 GBApplyPatch(core->board, &patch);
407 return true;
408}
409
410static void _GBCoreUnloadROM(struct mCore* core) {
411 struct GBCore* gbcore = (struct GBCore*) core;
412 struct SM83Core* cpu = core->cpu;
413 if (gbcore->cheatDevice) {
414 SM83HotplugDetach(cpu, CPU_COMPONENT_CHEAT_DEVICE);
415 cpu->components[CPU_COMPONENT_CHEAT_DEVICE] = NULL;
416 mCheatDeviceDestroy(gbcore->cheatDevice);
417 gbcore->cheatDevice = NULL;
418 }
419 return GBUnloadROM(core->board);
420}
421
422static void _GBCoreChecksum(const struct mCore* core, void* data, enum mCoreChecksumType type) {
423 struct GB* gb = (struct GB*) core->board;
424 switch (type) {
425 case mCHECKSUM_CRC32:
426 memcpy(data, &gb->romCrc32, sizeof(gb->romCrc32));
427 break;
428 }
429 return;
430}
431
432static void _GBCoreReset(struct mCore* core) {
433 struct GBCore* gbcore = (struct GBCore*) core;
434 struct GB* gb = (struct GB*) core->board;
435 if (gbcore->renderer.outputBuffer) {
436 GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
437 }
438
439 if (gb->memory.rom) {
440 int doColorOverride = 0;
441 mCoreConfigGetIntValue(&core->config, "useCgbColors", &doColorOverride);
442
443 struct GBCartridgeOverride override;
444 const struct GBCartridge* cart = (const struct GBCartridge*) &gb->memory.rom[0x100];
445 override.headerCrc32 = doCrc32(cart, sizeof(*cart));
446 if (GBOverrideFind(gbcore->overrides, &override) || (doColorOverride && GBOverrideColorFind(&override))) {
447 GBOverrideApply(gb, &override);
448 }
449
450 const char* modelGB = mCoreConfigGetValue(&core->config, "gb.model");
451 const char* modelSGB = mCoreConfigGetValue(&core->config, "sgb.model");
452 const char* modelCGB = mCoreConfigGetValue(&core->config, "cgb.model");
453 const char* modelCGBHybrid = mCoreConfigGetValue(&core->config, "cgb.hybridModel");
454 const char* modelCGBSGB = mCoreConfigGetValue(&core->config, "cgb.sgbModel");
455 if (modelGB || modelCGB || modelSGB || modelCGBHybrid || modelCGBSGB) {
456 int models = GBValidModels(gb->memory.rom);
457 switch (models) {
458 case GB_MODEL_SGB | GB_MODEL_MGB:
459 if (modelSGB) {
460 gb->model = GBNameToModel(modelSGB);
461 }
462 break;
463 case GB_MODEL_MGB:
464 if (modelGB) {
465 gb->model = GBNameToModel(modelGB);
466 }
467 break;
468 case GB_MODEL_MGB | GB_MODEL_CGB:
469 if (modelCGBHybrid) {
470 gb->model = GBNameToModel(modelCGBHybrid);
471 }
472 break;
473 case GB_MODEL_SGB | GB_MODEL_CGB: // TODO: Do these even exist?
474 case GB_MODEL_MGB | GB_MODEL_SGB | GB_MODEL_CGB:
475 if (modelCGBSGB) {
476 gb->model = GBNameToModel(modelCGBSGB);
477 }
478 break;
479 case GB_MODEL_CGB:
480 if (modelCGB) {
481 gb->model = GBNameToModel(modelCGB);
482 }
483 break;
484 }
485 }
486 }
487
488#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
489 if (!gb->biosVf && core->opts.useBios) {
490 struct VFile* bios = NULL;
491 bool found = false;
492 if (core->opts.bios) {
493 bios = VFileOpen(core->opts.bios, O_RDONLY);
494 if (bios && GBIsBIOS(bios)) {
495 found = true;
496 } else if (bios) {
497 bios->close(bios);
498 bios = NULL;
499 }
500 }
501 if (!found) {
502 GBDetectModel(gb);
503 const char* configPath = NULL;
504
505 switch (gb->model) {
506 case GB_MODEL_DMG:
507 case GB_MODEL_MGB: // TODO
508 configPath = mCoreConfigGetValue(&core->config, "gb.bios");
509 break;
510 case GB_MODEL_SGB:
511 case GB_MODEL_SGB2: // TODO
512 configPath = mCoreConfigGetValue(&core->config, "sgb.bios");
513 break;
514 case GB_MODEL_CGB:
515 case GB_MODEL_AGB:
516 configPath = mCoreConfigGetValue(&core->config, "gbc.bios");
517 break;
518 default:
519 break;
520 };
521 if (configPath) {
522 bios = VFileOpen(configPath, O_RDONLY);
523 }
524 if (bios && GBIsBIOS(bios)) {
525 found = true;
526 } else if (bios) {
527 bios->close(bios);
528 bios = NULL;
529 }
530 }
531 if (!found) {
532 char path[PATH_MAX];
533 mCoreConfigDirectory(path, PATH_MAX);
534 switch (gb->model) {
535 case GB_MODEL_DMG:
536 case GB_MODEL_MGB: // TODO
537 strncat(path, PATH_SEP "gb_bios.bin", PATH_MAX - strlen(path));
538 break;
539 case GB_MODEL_SGB:
540 case GB_MODEL_SGB2: // TODO
541 strncat(path, PATH_SEP "sgb_bios.bin", PATH_MAX - strlen(path));
542 break;
543 case GB_MODEL_CGB:
544 case GB_MODEL_AGB:
545 strncat(path, PATH_SEP "gbc_bios.bin", PATH_MAX - strlen(path));
546 break;
547 default:
548 break;
549 };
550 bios = VFileOpen(path, O_RDONLY);
551 if (bios && GBIsBIOS(bios)) {
552 found = true;
553 } else if (bios) {
554 bios->close(bios);
555 bios = NULL;
556 }
557 }
558 if (found && bios) {
559 GBLoadBIOS(gb, bios);
560 }
561 }
562#endif
563
564 if (gb->model < GB_MODEL_CGB) {
565 memcpy(gbcore->memoryBlocks, _GBMemoryBlocks, sizeof(_GBMemoryBlocks));
566 } else {
567 memcpy(gbcore->memoryBlocks, _GBCMemoryBlocks, sizeof(_GBCMemoryBlocks));
568 }
569
570 size_t i;
571 for (i = 0; i < sizeof(gbcore->memoryBlocks) / sizeof(*gbcore->memoryBlocks); ++i) {
572 if (gbcore->memoryBlocks[i].id == GB_REGION_CART_BANK0) {
573 gbcore->memoryBlocks[i].maxSegment = gb->memory.romSize / GB_SIZE_CART_BANK0;
574 } else if (gbcore->memoryBlocks[i].id == GB_REGION_EXTERNAL_RAM) {
575 gbcore->memoryBlocks[i].maxSegment = gb->sramSize / GB_SIZE_EXTERNAL_RAM;
576 } else {
577 continue;
578 }
579 if (gbcore->memoryBlocks[i].maxSegment) {
580 --gbcore->memoryBlocks[i].maxSegment;
581 }
582 }
583
584 SM83Reset(core->cpu);
585
586 if (core->opts.skipBios) {
587 GBSkipBIOS(core->board);
588 }
589}
590
591static void _GBCoreRunFrame(struct mCore* core) {
592 struct GB* gb = core->board;
593 int32_t frameCounter = gb->video.frameCounter;
594 while (gb->video.frameCounter == frameCounter) {
595 SM83Run(core->cpu);
596 }
597}
598
599static void _GBCoreRunLoop(struct mCore* core) {
600 SM83Run(core->cpu);
601}
602
603static void _GBCoreStep(struct mCore* core) {
604 struct SM83Core* cpu = core->cpu;
605 do {
606 SM83Tick(cpu);
607 } while (cpu->executionState != SM83_CORE_FETCH);
608}
609
610static size_t _GBCoreStateSize(struct mCore* core) {
611 UNUSED(core);
612 return sizeof(struct GBSerializedState);
613}
614
615static bool _GBCoreLoadState(struct mCore* core, const void* state) {
616 return GBDeserialize(core->board, state);
617}
618
619static bool _GBCoreSaveState(struct mCore* core, void* state) {
620 struct SM83Core* cpu = core->cpu;
621 while (cpu->executionState != SM83_CORE_FETCH) {
622 SM83Tick(cpu);
623 }
624 GBSerialize(core->board, state);
625 return true;
626}
627
628static void _GBCoreSetKeys(struct mCore* core, uint32_t keys) {
629 struct GBCore* gbcore = (struct GBCore*) core;
630 gbcore->keys = keys;
631 GBTestKeypadIRQ(core->board);
632}
633
634static void _GBCoreAddKeys(struct mCore* core, uint32_t keys) {
635 struct GBCore* gbcore = (struct GBCore*) core;
636 gbcore->keys |= keys;
637 GBTestKeypadIRQ(core->board);
638}
639
640static void _GBCoreClearKeys(struct mCore* core, uint32_t keys) {
641 struct GBCore* gbcore = (struct GBCore*) core;
642 gbcore->keys &= ~keys;
643}
644
645static int32_t _GBCoreFrameCounter(const struct mCore* core) {
646 const struct GB* gb = core->board;
647 return gb->video.frameCounter;
648}
649
650static int32_t _GBCoreFrameCycles(const struct mCore* core) {
651 UNUSED(core);
652 return GB_VIDEO_TOTAL_LENGTH;
653}
654
655static int32_t _GBCoreFrequency(const struct mCore* core) {
656 UNUSED(core);
657 // TODO: GB differences
658 return DMG_SM83_FREQUENCY;
659}
660
661static void _GBCoreGetGameTitle(const struct mCore* core, char* title) {
662 GBGetGameTitle(core->board, title);
663}
664
665static void _GBCoreGetGameCode(const struct mCore* core, char* title) {
666 GBGetGameCode(core->board, title);
667}
668
669static void _GBCoreSetPeripheral(struct mCore* core, int type, void* periph) {
670 struct GB* gb = core->board;
671 switch (type) {
672 case mPERIPH_ROTATION:
673 gb->memory.rotation = periph;
674 break;
675 case mPERIPH_RUMBLE:
676 gb->memory.rumble = periph;
677 break;
678 case mPERIPH_IMAGE_SOURCE:
679 gb->memory.cam = periph;
680 break;
681 default:
682 return;
683 }
684}
685
686static uint32_t _GBCoreBusRead8(struct mCore* core, uint32_t address) {
687 struct SM83Core* cpu = core->cpu;
688 return cpu->memory.load8(cpu, address);
689}
690
691static uint32_t _GBCoreBusRead16(struct mCore* core, uint32_t address) {
692 struct SM83Core* cpu = core->cpu;
693 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8);
694}
695
696static uint32_t _GBCoreBusRead32(struct mCore* core, uint32_t address) {
697 struct SM83Core* cpu = core->cpu;
698 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8) |
699 (cpu->memory.load8(cpu, address + 2) << 16) | (cpu->memory.load8(cpu, address + 3) << 24);
700}
701
702static void _GBCoreBusWrite8(struct mCore* core, uint32_t address, uint8_t value) {
703 struct SM83Core* cpu = core->cpu;
704 cpu->memory.store8(cpu, address, value);
705}
706
707static void _GBCoreBusWrite16(struct mCore* core, uint32_t address, uint16_t value) {
708 struct SM83Core* cpu = core->cpu;
709 cpu->memory.store8(cpu, address, value);
710 cpu->memory.store8(cpu, address + 1, value >> 8);
711}
712
713static void _GBCoreBusWrite32(struct mCore* core, uint32_t address, uint32_t value) {
714 struct SM83Core* cpu = core->cpu;
715 cpu->memory.store8(cpu, address, value);
716 cpu->memory.store8(cpu, address + 1, value >> 8);
717 cpu->memory.store8(cpu, address + 2, value >> 16);
718 cpu->memory.store8(cpu, address + 3, value >> 24);
719}
720
721static uint32_t _GBCoreRawRead8(struct mCore* core, uint32_t address, int segment) {
722 struct SM83Core* cpu = core->cpu;
723 return GBView8(cpu, address, segment);
724}
725
726static uint32_t _GBCoreRawRead16(struct mCore* core, uint32_t address, int segment) {
727 struct SM83Core* cpu = core->cpu;
728 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8);
729}
730
731static uint32_t _GBCoreRawRead32(struct mCore* core, uint32_t address, int segment) {
732 struct SM83Core* cpu = core->cpu;
733 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8) |
734 (GBView8(cpu, address + 2, segment) << 16) | (GBView8(cpu, address + 3, segment) << 24);
735}
736
737static void _GBCoreRawWrite8(struct mCore* core, uint32_t address, int segment, uint8_t value) {
738 struct SM83Core* cpu = core->cpu;
739 GBPatch8(cpu, address, value, NULL, segment);
740}
741
742static void _GBCoreRawWrite16(struct mCore* core, uint32_t address, int segment, uint16_t value) {
743 struct SM83Core* cpu = core->cpu;
744 GBPatch8(cpu, address, value, NULL, segment);
745 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
746}
747
748static void _GBCoreRawWrite32(struct mCore* core, uint32_t address, int segment, uint32_t value) {
749 struct SM83Core* cpu = core->cpu;
750 GBPatch8(cpu, address, value, NULL, segment);
751 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
752 GBPatch8(cpu, address + 2, value >> 16, NULL, segment);
753 GBPatch8(cpu, address + 3, value >> 24, NULL, segment);
754}
755
756size_t _GBListMemoryBlocks(const struct mCore* core, const struct mCoreMemoryBlock** blocks) {
757 struct GBCore* gbcore = (struct GBCore*) core;
758 *blocks = gbcore->memoryBlocks;
759 return sizeof(gbcore->memoryBlocks) / sizeof(*gbcore->memoryBlocks);
760}
761
762void* _GBGetMemoryBlock(struct mCore* core, size_t id, size_t* sizeOut) {
763 struct GB* gb = core->board;
764 bool isCgb = gb->model >= GB_MODEL_CGB;
765 switch (id) {
766 default:
767 return NULL;
768 case GB_REGION_CART_BANK0:
769 *sizeOut = gb->memory.romSize;
770 return gb->memory.rom;
771 case GB_REGION_VRAM:
772 *sizeOut = GB_SIZE_WORKING_RAM_BANK0 * (isCgb ? 1 : 2);
773 return gb->video.vram;
774 case GB_REGION_EXTERNAL_RAM:
775 *sizeOut = gb->sramSize;
776 return gb->memory.sram;
777 case GB_REGION_WORKING_RAM_BANK0:
778 *sizeOut = GB_SIZE_VRAM * (isCgb ? 8 : 2);
779 return gb->memory.wram;
780 case GB_BASE_OAM:
781 *sizeOut = GB_SIZE_OAM;
782 return gb->video.oam.raw;
783 case GB_BASE_HRAM:
784 *sizeOut = GB_SIZE_HRAM;
785 return gb->memory.hram;
786 }
787}
788
789#ifdef USE_DEBUGGERS
790static bool _GBCoreSupportsDebuggerType(struct mCore* core, enum mDebuggerType type) {
791 UNUSED(core);
792 switch (type) {
793 case DEBUGGER_CUSTOM:
794 case DEBUGGER_CLI:
795 return true;
796 default:
797 return false;
798 }
799}
800
801static struct mDebuggerPlatform* _GBCoreDebuggerPlatform(struct mCore* core) {
802 struct GBCore* gbcore = (struct GBCore*) core;
803 struct GB* gb = core->board;
804 if (!gbcore->debuggerPlatform) {
805 struct SM83Debugger* platform = (struct SM83Debugger*) GBDebuggerCreate(gb);
806 gbcore->debuggerPlatform = &platform->d;
807 }
808 return gbcore->debuggerPlatform;
809}
810
811static struct CLIDebuggerSystem* _GBCoreCliDebuggerSystem(struct mCore* core) {
812 return GBCLIDebuggerCreate(core);
813}
814
815static void _GBCoreAttachDebugger(struct mCore* core, struct mDebugger* debugger) {
816 struct SM83Core* cpu = core->cpu;
817 if (core->debugger) {
818 SM83HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
819 }
820 cpu->components[CPU_COMPONENT_DEBUGGER] = &debugger->d;
821 SM83HotplugAttach(cpu, CPU_COMPONENT_DEBUGGER);
822 core->debugger = debugger;
823}
824
825static void _GBCoreDetachDebugger(struct mCore* core) {
826 struct SM83Core* cpu = core->cpu;
827 if (core->debugger) {
828 SM83HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
829 }
830 cpu->components[CPU_COMPONENT_DEBUGGER] = NULL;
831 core->debugger = NULL;
832}
833
834static void _GBCoreLoadSymbols(struct mCore* core, struct VFile* vf) {
835 core->symbolTable = mDebuggerSymbolTableCreate();
836#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
837 if (!vf) {
838 vf = mDirectorySetOpenSuffix(&core->dirs, core->dirs.base, ".sym", O_RDONLY);
839 }
840#endif
841 if (!vf) {
842 return;
843 }
844 GBLoadSymbols(core->symbolTable, vf);
845}
846
847static bool _GBCoreLookupIdentifier(struct mCore* core, const char* name, int32_t* value, int* segment) {
848 UNUSED(core);
849 *segment = -1;
850 int i;
851 for (i = 0; i < GB_REG_MAX; ++i) {
852 const char* reg = GBIORegisterNames[i];
853 if (reg && strcasecmp(reg, name) == 0) {
854 *value = GB_BASE_IO | i;
855 return true;
856 }
857 }
858 return false;
859}
860#endif
861
862static struct mCheatDevice* _GBCoreCheatDevice(struct mCore* core) {
863 struct GBCore* gbcore = (struct GBCore*) core;
864 if (!gbcore->cheatDevice) {
865 gbcore->cheatDevice = GBCheatDeviceCreate();
866 ((struct SM83Core*) core->cpu)->components[CPU_COMPONENT_CHEAT_DEVICE] = &gbcore->cheatDevice->d;
867 SM83HotplugAttach(core->cpu, CPU_COMPONENT_CHEAT_DEVICE);
868 gbcore->cheatDevice->p = core;
869 }
870 return gbcore->cheatDevice;
871}
872
873static size_t _GBCoreSavedataClone(struct mCore* core, void** sram) {
874 struct GB* gb = core->board;
875 struct VFile* vf = gb->sramVf;
876 if (vf) {
877 *sram = malloc(vf->size(vf));
878 vf->seek(vf, 0, SEEK_SET);
879 return vf->read(vf, *sram, vf->size(vf));
880 }
881 if (gb->sramSize) {
882 *sram = malloc(gb->sramSize);
883 memcpy(*sram, gb->memory.sram, gb->sramSize);
884 return gb->sramSize;
885 }
886 *sram = NULL;
887 return 0;
888}
889
890static bool _GBCoreSavedataRestore(struct mCore* core, const void* sram, size_t size, bool writeback) {
891 struct GB* gb = core->board;
892 if (!writeback) {
893 struct VFile* vf = VFileMemChunk(sram, size);
894 GBSavedataMask(gb, vf, true);
895 return true;
896 }
897 struct VFile* vf = gb->sramVf;
898 if (vf) {
899 vf->seek(vf, 0, SEEK_SET);
900 return vf->write(vf, sram, size) > 0;
901 }
902 if (size > 0x20000) {
903 size = 0x20000;
904 }
905 GBResizeSram(gb, size);
906 memcpy(gb->memory.sram, sram, size);
907 return true;
908}
909
910static size_t _GBCoreListVideoLayers(const struct mCore* core, const struct mCoreChannelInfo** info) {
911 UNUSED(core);
912 if (info) {
913 *info = _GBVideoLayers;
914 }
915 return sizeof(_GBVideoLayers) / sizeof(*_GBVideoLayers);
916}
917
918static size_t _GBCoreListAudioChannels(const struct mCore* core, const struct mCoreChannelInfo** info) {
919 UNUSED(core);
920 if (info) {
921 *info = _GBAudioChannels;
922 }
923 return sizeof(_GBAudioChannels) / sizeof(*_GBAudioChannels);
924}
925
926static void _GBCoreEnableVideoLayer(struct mCore* core, size_t id, bool enable) {
927 struct GB* gb = core->board;
928 switch (id) {
929 case GB_LAYER_BACKGROUND:
930 gb->video.renderer->disableBG = !enable;
931 break;
932 case GB_LAYER_WINDOW:
933 gb->video.renderer->disableWIN = !enable;
934 break;
935 case GB_LAYER_OBJ:
936 gb->video.renderer->disableOBJ = !enable;
937 break;
938 default:
939 break;
940 }
941}
942
943static void _GBCoreEnableAudioChannel(struct mCore* core, size_t id, bool enable) {
944 struct GB* gb = core->board;
945 switch (id) {
946 case 0:
947 case 1:
948 case 2:
949 case 3:
950 gb->audio.forceDisableCh[id] = !enable;
951 break;
952 default:
953 break;
954 }
955}
956
957static void _GBCoreAdjustVideoLayer(struct mCore* core, size_t id, int32_t x, int32_t y) {
958 struct GBCore* gbcore = (struct GBCore*) core;
959 switch (id) {
960 case GB_LAYER_BACKGROUND:
961 gbcore->renderer.offsetScx = x;
962 gbcore->renderer.offsetScy = y;
963 break;
964 case GB_LAYER_WINDOW:
965 gbcore->renderer.offsetWx = x;
966 gbcore->renderer.offsetWy = y;
967 break;
968 case GB_LAYER_OBJ:
969 gbcore->renderer.objOffsetX = x;
970 gbcore->renderer.objOffsetY = y;
971 break;
972 default:
973 return;
974 }
975}
976
977#ifndef MINIMAL_CORE
978static void _GBCoreStartVideoLog(struct mCore* core, struct mVideoLogContext* context) {
979 struct GBCore* gbcore = (struct GBCore*) core;
980 struct GB* gb = core->board;
981 gbcore->logContext = context;
982
983 int channelId = mVideoLoggerAddChannel(context);
984 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
985 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, false);
986 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, context, channelId);
987 gbcore->proxyRenderer.logger->block = false;
988
989 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, &gbcore->renderer.d);
990 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
991}
992
993static void _GBCoreEndVideoLog(struct mCore* core) {
994 struct GBCore* gbcore = (struct GBCore*) core;
995 struct GB* gb = core->board;
996 if (gbcore->proxyRenderer.logger) {
997 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
998 free(gbcore->proxyRenderer.logger);
999 gbcore->proxyRenderer.logger = NULL;
1000 }
1001}
1002#endif
1003
1004struct mCore* GBCoreCreate(void) {
1005 struct GBCore* gbcore = malloc(sizeof(*gbcore));
1006 struct mCore* core = &gbcore->d;
1007 memset(&core->opts, 0, sizeof(core->opts));
1008 core->cpu = NULL;
1009 core->board = NULL;
1010 core->debugger = NULL;
1011 core->symbolTable = NULL;
1012 core->init = _GBCoreInit;
1013 core->deinit = _GBCoreDeinit;
1014 core->platform = _GBCorePlatform;
1015 core->supportsFeature = _GBCoreSupportsFeature;
1016 core->setSync = _GBCoreSetSync;
1017 core->loadConfig = _GBCoreLoadConfig;
1018 core->reloadConfigOption = _GBCoreReloadConfigOption;
1019 core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
1020 core->setVideoBuffer = _GBCoreSetVideoBuffer;
1021 core->setVideoGLTex = _GBCoreSetVideoGLTex;
1022 core->getPixels = _GBCoreGetPixels;
1023 core->putPixels = _GBCorePutPixels;
1024 core->getAudioChannel = _GBCoreGetAudioChannel;
1025 core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
1026 core->getAudioBufferSize = _GBCoreGetAudioBufferSize;
1027 core->setAVStream = _GBCoreSetAVStream;
1028 core->addCoreCallbacks = _GBCoreAddCoreCallbacks;
1029 core->clearCoreCallbacks = _GBCoreClearCoreCallbacks;
1030 core->isROM = GBIsROM;
1031 core->loadROM = _GBCoreLoadROM;
1032 core->loadBIOS = _GBCoreLoadBIOS;
1033 core->loadSave = _GBCoreLoadSave;
1034 core->loadTemporarySave = _GBCoreLoadTemporarySave;
1035 core->loadPatch = _GBCoreLoadPatch;
1036 core->unloadROM = _GBCoreUnloadROM;
1037 core->checksum = _GBCoreChecksum;
1038 core->reset = _GBCoreReset;
1039 core->runFrame = _GBCoreRunFrame;
1040 core->runLoop = _GBCoreRunLoop;
1041 core->step = _GBCoreStep;
1042 core->stateSize = _GBCoreStateSize;
1043 core->loadState = _GBCoreLoadState;
1044 core->saveState = _GBCoreSaveState;
1045 core->setKeys = _GBCoreSetKeys;
1046 core->addKeys = _GBCoreAddKeys;
1047 core->clearKeys = _GBCoreClearKeys;
1048 core->frameCounter = _GBCoreFrameCounter;
1049 core->frameCycles = _GBCoreFrameCycles;
1050 core->frequency = _GBCoreFrequency;
1051 core->getGameTitle = _GBCoreGetGameTitle;
1052 core->getGameCode = _GBCoreGetGameCode;
1053 core->setPeripheral = _GBCoreSetPeripheral;
1054 core->busRead8 = _GBCoreBusRead8;
1055 core->busRead16 = _GBCoreBusRead16;
1056 core->busRead32 = _GBCoreBusRead32;
1057 core->busWrite8 = _GBCoreBusWrite8;
1058 core->busWrite16 = _GBCoreBusWrite16;
1059 core->busWrite32 = _GBCoreBusWrite32;
1060 core->rawRead8 = _GBCoreRawRead8;
1061 core->rawRead16 = _GBCoreRawRead16;
1062 core->rawRead32 = _GBCoreRawRead32;
1063 core->rawWrite8 = _GBCoreRawWrite8;
1064 core->rawWrite16 = _GBCoreRawWrite16;
1065 core->rawWrite32 = _GBCoreRawWrite32;
1066 core->listMemoryBlocks = _GBListMemoryBlocks;
1067 core->getMemoryBlock = _GBGetMemoryBlock;
1068#ifdef USE_DEBUGGERS
1069 core->supportsDebuggerType = _GBCoreSupportsDebuggerType;
1070 core->debuggerPlatform = _GBCoreDebuggerPlatform;
1071 core->cliDebuggerSystem = _GBCoreCliDebuggerSystem;
1072 core->attachDebugger = _GBCoreAttachDebugger;
1073 core->detachDebugger = _GBCoreDetachDebugger;
1074 core->loadSymbols = _GBCoreLoadSymbols;
1075 core->lookupIdentifier = _GBCoreLookupIdentifier;
1076#endif
1077 core->cheatDevice = _GBCoreCheatDevice;
1078 core->savedataClone = _GBCoreSavedataClone;
1079 core->savedataRestore = _GBCoreSavedataRestore;
1080 core->listVideoLayers = _GBCoreListVideoLayers;
1081 core->listAudioChannels = _GBCoreListAudioChannels;
1082 core->enableVideoLayer = _GBCoreEnableVideoLayer;
1083 core->enableAudioChannel = _GBCoreEnableAudioChannel;
1084 core->adjustVideoLayer = _GBCoreAdjustVideoLayer;
1085#ifndef MINIMAL_CORE
1086 core->startVideoLog = _GBCoreStartVideoLog;
1087 core->endVideoLog = _GBCoreEndVideoLog;
1088#endif
1089 return core;
1090}
1091
1092#ifndef MINIMAL_CORE
1093static void _GBVLPStartFrameCallback(void *context) {
1094 struct mCore* core = context;
1095 struct GBCore* gbcore = (struct GBCore*) core;
1096 struct GB* gb = core->board;
1097
1098 if (!mVideoLoggerRendererRun(gbcore->proxyRenderer.logger, true)) {
1099 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
1100 mVideoLogContextRewind(gbcore->logContext, core);
1101 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
1102 gb->earlyExit = true;
1103 }
1104}
1105
1106static bool _GBVLPInit(struct mCore* core) {
1107 struct GBCore* gbcore = (struct GBCore*) core;
1108 if (!_GBCoreInit(core)) {
1109 return false;
1110 }
1111 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
1112 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, true);
1113 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, NULL);
1114 memset(&gbcore->logCallbacks, 0, sizeof(gbcore->logCallbacks));
1115 gbcore->logCallbacks.videoFrameStarted = _GBVLPStartFrameCallback;
1116 gbcore->logCallbacks.context = core;
1117 core->addCoreCallbacks(core, &gbcore->logCallbacks);
1118 core->videoLogger = gbcore->proxyRenderer.logger;
1119 return true;
1120}
1121
1122static void _GBVLPDeinit(struct mCore* core) {
1123 struct GBCore* gbcore = (struct GBCore*) core;
1124 if (gbcore->logContext) {
1125 mVideoLogContextDestroy(core, gbcore->logContext, true);
1126 }
1127 _GBCoreDeinit(core);
1128}
1129
1130static void _GBVLPReset(struct mCore* core) {
1131 struct GBCore* gbcore = (struct GBCore*) core;
1132 struct GB* gb = (struct GB*) core->board;
1133 if (gb->video.renderer == &gbcore->proxyRenderer.d) {
1134 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
1135 } else if (gbcore->renderer.outputBuffer) {
1136 struct GBVideoRenderer* renderer = &gbcore->renderer.d;
1137 GBVideoAssociateRenderer(&gb->video, renderer);
1138 }
1139
1140 SM83Reset(core->cpu);
1141 mVideoLogContextRewind(gbcore->logContext, core);
1142 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
1143
1144 // Make sure CPU loop never spins
1145 gb->memory.ie = 0;
1146 gb->memory.ime = false;
1147 GBHalt(gb->cpu);
1148}
1149
1150static bool _GBVLPLoadROM(struct mCore* core, struct VFile* vf) {
1151 struct GBCore* gbcore = (struct GBCore*) core;
1152 gbcore->logContext = mVideoLogContextCreate(NULL);
1153 if (!mVideoLogContextLoad(gbcore->logContext, vf)) {
1154 mVideoLogContextDestroy(core, gbcore->logContext, false);
1155 gbcore->logContext = NULL;
1156 return false;
1157 }
1158 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, gbcore->logContext, 0);
1159 return true;
1160}
1161
1162static bool _GBVLPLoadState(struct mCore* core, const void* buffer) {
1163 struct GB* gb = (struct GB*) core->board;
1164 const struct GBSerializedState* state = buffer;
1165
1166 gb->timing.root = NULL;
1167 gb->model = state->model;
1168
1169 gb->cpu->pc = GB_BASE_HRAM;
1170 gb->cpu->memory.setActiveRegion(gb->cpu, gb->cpu->pc);
1171
1172 GBVideoReset(&gb->video);
1173 GBVideoDeserialize(&gb->video, state);
1174 GBIODeserialize(gb, state);
1175 GBAudioReset(&gb->audio);
1176 if (gb->model & GB_MODEL_SGB) {
1177 GBSGBDeserialize(gb, state);
1178 }
1179
1180 // Make sure CPU loop never spins
1181 gb->memory.ie = 0;
1182 gb->memory.ime = false;
1183 GBHalt(gb->cpu);
1184
1185 return true;
1186}
1187
1188static bool _returnTrue(struct VFile* vf) {
1189 UNUSED(vf);
1190 return true;
1191}
1192
1193struct mCore* GBVideoLogPlayerCreate(void) {
1194 struct mCore* core = GBCoreCreate();
1195 core->init = _GBVLPInit;
1196 core->deinit = _GBVLPDeinit;
1197 core->reset = _GBVLPReset;
1198 core->loadROM = _GBVLPLoadROM;
1199 core->loadState = _GBVLPLoadState;
1200 core->isROM = _returnTrue;
1201 return core;
1202}
1203#else
1204struct mCore* GBVideoLogPlayerCreate(void) {
1205 return false;
1206}
1207#endif