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};
79
80static bool _GBCoreInit(struct mCore* core) {
81 struct GBCore* gbcore = (struct GBCore*) core;
82
83 struct SM83Core* cpu = anonymousMemoryMap(sizeof(struct SM83Core));
84 struct GB* gb = anonymousMemoryMap(sizeof(struct GB));
85 if (!cpu || !gb) {
86 free(cpu);
87 free(gb);
88 return false;
89 }
90 core->cpu = cpu;
91 core->board = gb;
92 core->timing = &gb->timing;
93 gbcore->overrides = NULL;
94 gbcore->debuggerPlatform = NULL;
95 gbcore->cheatDevice = NULL;
96#ifndef MINIMAL_CORE
97 gbcore->logContext = NULL;
98#endif
99
100 GBCreate(gb);
101 memset(gbcore->components, 0, sizeof(gbcore->components));
102 SM83SetComponents(cpu, &gb->d, CPU_COMPONENT_MAX, gbcore->components);
103 SM83Init(cpu);
104 mRTCGenericSourceInit(&core->rtc, core);
105 gb->memory.rtc = &core->rtc.d;
106
107 GBVideoDummyRendererCreate(&gbcore->dummyRenderer);
108 GBVideoAssociateRenderer(&gb->video, &gbcore->dummyRenderer);
109
110 GBVideoSoftwareRendererCreate(&gbcore->renderer);
111 gbcore->renderer.outputBuffer = NULL;
112
113#ifndef MINIMAL_CORE
114 gbcore->proxyRenderer.logger = NULL;
115#endif
116
117 gbcore->keys = 0;
118 gb->keySource = &gbcore->keys;
119
120#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
121 mDirectorySetInit(&core->dirs);
122#endif
123
124 return true;
125}
126
127static void _GBCoreDeinit(struct mCore* core) {
128 SM83Deinit(core->cpu);
129 GBDestroy(core->board);
130 mappedMemoryFree(core->cpu, sizeof(struct SM83Core));
131 mappedMemoryFree(core->board, sizeof(struct GB));
132#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
133 mDirectorySetDeinit(&core->dirs);
134#endif
135#ifdef USE_DEBUGGERS
136 if (core->symbolTable) {
137 mDebuggerSymbolTableDestroy(core->symbolTable);
138 }
139#endif
140
141 struct GBCore* gbcore = (struct GBCore*) core;
142 free(gbcore->debuggerPlatform);
143 if (gbcore->cheatDevice) {
144 mCheatDeviceDestroy(gbcore->cheatDevice);
145 }
146 mCoreConfigFreeOpts(&core->opts);
147 free(core);
148}
149
150static enum mPlatform _GBCorePlatform(const struct mCore* core) {
151 UNUSED(core);
152 return PLATFORM_GB;
153}
154
155static bool _GBCoreSupportsFeature(const struct mCore* core, enum mCoreFeature feature) {
156 UNUSED(core);
157 switch (feature) {
158 default:
159 return false;
160 }
161}
162
163static void _GBCoreSetSync(struct mCore* core, struct mCoreSync* sync) {
164 struct GB* gb = core->board;
165 gb->sync = sync;
166}
167
168static void _GBCoreLoadConfig(struct mCore* core, const struct mCoreConfig* config) {
169 UNUSED(config);
170
171 struct GB* gb = core->board;
172 if (core->opts.mute) {
173 gb->audio.masterVolume = 0;
174 } else {
175 gb->audio.masterVolume = core->opts.volume;
176 }
177 gb->video.frameskip = core->opts.frameskip;
178
179 int color;
180 if (mCoreConfigGetIntValue(config, "gb.pal[0]", &color)) {
181 GBVideoSetPalette(&gb->video, 0, color);
182 }
183 if (mCoreConfigGetIntValue(config, "gb.pal[1]", &color)) {
184 GBVideoSetPalette(&gb->video, 1, color);
185 }
186 if (mCoreConfigGetIntValue(config, "gb.pal[2]", &color)) {
187 GBVideoSetPalette(&gb->video, 2, color);
188 }
189 if (mCoreConfigGetIntValue(config, "gb.pal[3]", &color)) {
190 GBVideoSetPalette(&gb->video, 3, color);
191 }
192 if (mCoreConfigGetIntValue(config, "gb.pal[4]", &color)) {
193 GBVideoSetPalette(&gb->video, 4, color);
194 }
195 if (mCoreConfigGetIntValue(config, "gb.pal[5]", &color)) {
196 GBVideoSetPalette(&gb->video, 5, color);
197 }
198 if (mCoreConfigGetIntValue(config, "gb.pal[6]", &color)) {
199 GBVideoSetPalette(&gb->video, 6, color);
200 }
201 if (mCoreConfigGetIntValue(config, "gb.pal[7]", &color)) {
202 GBVideoSetPalette(&gb->video, 7, color);
203 }
204 if (mCoreConfigGetIntValue(config, "gb.pal[8]", &color)) {
205 GBVideoSetPalette(&gb->video, 8, color);
206 }
207 if (mCoreConfigGetIntValue(config, "gb.pal[9]", &color)) {
208 GBVideoSetPalette(&gb->video, 9, color);
209 }
210 if (mCoreConfigGetIntValue(config, "gb.pal[10]", &color)) {
211 GBVideoSetPalette(&gb->video, 10, color);
212 }
213 if (mCoreConfigGetIntValue(config, "gb.pal[11]", &color)) {
214 GBVideoSetPalette(&gb->video, 11, color);
215 }
216
217 mCoreConfigCopyValue(&core->config, config, "gb.bios");
218 mCoreConfigCopyValue(&core->config, config, "sgb.bios");
219 mCoreConfigCopyValue(&core->config, config, "gbc.bios");
220 mCoreConfigCopyValue(&core->config, config, "gb.model");
221 mCoreConfigCopyValue(&core->config, config, "sgb.model");
222 mCoreConfigCopyValue(&core->config, config, "cgb.model");
223 mCoreConfigCopyValue(&core->config, config, "cgb.hybridModel");
224 mCoreConfigCopyValue(&core->config, config, "cgb.sgbModel");
225 mCoreConfigCopyValue(&core->config, config, "useCgbColors");
226 mCoreConfigCopyValue(&core->config, config, "allowOpposingDirections");
227
228 int fakeBool = 0;
229 mCoreConfigGetIntValue(config, "allowOpposingDirections", &fakeBool);
230 gb->allowOpposingDirections = fakeBool;
231
232 if (mCoreConfigGetIntValue(config, "sgb.borders", &fakeBool)) {
233 gb->video.sgbBorders = fakeBool;
234 gb->video.renderer->enableSGBBorder(gb->video.renderer, fakeBool);
235 }
236
237#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
238 struct GBCore* gbcore = (struct GBCore*) core;
239 gbcore->overrides = mCoreConfigGetOverridesConst(config);
240#endif
241}
242
243static void _GBCoreReloadConfigOption(struct mCore* core, const char* option, const struct mCoreConfig* config) {
244 struct GB* gb = core->board;
245 if (!config) {
246 config = &core->config;
247 }
248
249 if (!option) {
250 // Reload options from opts
251 if (core->opts.mute) {
252 gb->audio.masterVolume = 0;
253 } else {
254 gb->audio.masterVolume = core->opts.volume;
255 }
256 gb->video.frameskip = core->opts.frameskip;
257 return;
258 }
259
260 int fakeBool;
261 if (strcmp("mute", option) == 0) {
262 if (mCoreConfigGetIntValue(config, "mute", &fakeBool)) {
263 core->opts.mute = fakeBool;
264
265 if (core->opts.mute) {
266 gb->audio.masterVolume = 0;
267 } else {
268 gb->audio.masterVolume = core->opts.volume;
269 }
270 }
271 return;
272 }
273 if (strcmp("volume", option) == 0) {
274 if (mCoreConfigGetIntValue(config, "volume", &core->opts.volume) && !core->opts.mute) {
275 gb->audio.masterVolume = core->opts.volume;
276 }
277 return;
278 }
279 if (strcmp("frameskip", option) == 0) {
280 if (mCoreConfigGetIntValue(config, "frameskip", &core->opts.frameskip)) {
281 gb->video.frameskip = core->opts.frameskip;
282 }
283 return;
284 }
285 if (strcmp("allowOpposingDirections", option) == 0) {
286 if (config != &core->config) {
287 mCoreConfigCopyValue(&core->config, config, "allowOpposingDirections");
288 }
289 if (mCoreConfigGetIntValue(config, "allowOpposingDirections", &fakeBool)) {
290 gb->allowOpposingDirections = fakeBool;
291 }
292 return;
293 }
294 if (strcmp("sgb.borders", option) == 0) {
295 if (mCoreConfigGetIntValue(config, "sgb.borders", &fakeBool)) {
296 gb->video.sgbBorders = fakeBool;
297 gb->video.renderer->enableSGBBorder(gb->video.renderer, fakeBool);
298 }
299 }
300}
301
302static void _GBCoreDesiredVideoDimensions(const struct mCore* core, unsigned* width, unsigned* height) {
303 const struct GB* gb = core->board;
304 if (gb && (!(gb->model & GB_MODEL_SGB) || !gb->video.sgbBorders)) {
305 *width = GB_VIDEO_HORIZONTAL_PIXELS;
306 *height = GB_VIDEO_VERTICAL_PIXELS;
307 } else {
308 *width = 256;
309 *height = 224;
310 }
311}
312
313static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t stride) {
314 struct GBCore* gbcore = (struct GBCore*) core;
315 gbcore->renderer.outputBuffer = buffer;
316 gbcore->renderer.outputBufferStride = stride;
317}
318
319static void _GBCoreSetVideoGLTex(struct mCore* core, unsigned texid) {
320 UNUSED(core);
321 UNUSED(texid);
322}
323
324static void _GBCoreGetPixels(struct mCore* core, const void** buffer, size_t* stride) {
325 struct GBCore* gbcore = (struct GBCore*) core;
326 gbcore->renderer.d.getPixels(&gbcore->renderer.d, stride, buffer);
327}
328
329static void _GBCorePutPixels(struct mCore* core, const void* buffer, size_t stride) {
330 struct GBCore* gbcore = (struct GBCore*) core;
331 gbcore->renderer.d.putPixels(&gbcore->renderer.d, stride, buffer);
332}
333
334static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
335 struct GB* gb = core->board;
336 switch (ch) {
337 case 0:
338 return gb->audio.left;
339 case 1:
340 return gb->audio.right;
341 default:
342 return NULL;
343 }
344}
345
346static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
347 struct GB* gb = core->board;
348 GBAudioResizeBuffer(&gb->audio, samples);
349}
350
351static size_t _GBCoreGetAudioBufferSize(struct mCore* core) {
352 struct GB* gb = core->board;
353 return gb->audio.samples;
354}
355
356static void _GBCoreAddCoreCallbacks(struct mCore* core, struct mCoreCallbacks* coreCallbacks) {
357 struct GB* gb = core->board;
358 *mCoreCallbacksListAppend(&gb->coreCallbacks) = *coreCallbacks;
359}
360
361static void _GBCoreClearCoreCallbacks(struct mCore* core) {
362 struct GB* gb = core->board;
363 mCoreCallbacksListClear(&gb->coreCallbacks);
364}
365
366static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
367 struct GB* gb = core->board;
368 gb->stream = stream;
369 if (stream && stream->videoDimensionsChanged) {
370 unsigned width, height;
371 core->desiredVideoDimensions(core, &width, &height);
372 stream->videoDimensionsChanged(stream, width, height);
373 }
374}
375
376static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
377 return GBLoadROM(core->board, vf);
378}
379
380static bool _GBCoreLoadBIOS(struct mCore* core, struct VFile* vf, int type) {
381 UNUSED(type);
382 GBLoadBIOS(core->board, vf);
383 return true;
384}
385
386static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
387 return GBLoadSave(core->board, vf);
388}
389
390static bool _GBCoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
391 struct GB* gb = core->board;
392 GBSavedataMask(gb, vf, false);
393 return true; // TODO: Return a real value
394}
395
396static bool _GBCoreLoadPatch(struct mCore* core, struct VFile* vf) {
397 if (!vf) {
398 return false;
399 }
400 struct Patch patch;
401 if (!loadPatch(vf, &patch)) {
402 return false;
403 }
404 GBApplyPatch(core->board, &patch);
405 return true;
406}
407
408static void _GBCoreUnloadROM(struct mCore* core) {
409 struct GBCore* gbcore = (struct GBCore*) core;
410 struct SM83Core* cpu = core->cpu;
411 if (gbcore->cheatDevice) {
412 SM83HotplugDetach(cpu, CPU_COMPONENT_CHEAT_DEVICE);
413 cpu->components[CPU_COMPONENT_CHEAT_DEVICE] = NULL;
414 mCheatDeviceDestroy(gbcore->cheatDevice);
415 gbcore->cheatDevice = NULL;
416 }
417 return GBUnloadROM(core->board);
418}
419
420static void _GBCoreChecksum(const struct mCore* core, void* data, enum mCoreChecksumType type) {
421 struct GB* gb = (struct GB*) core->board;
422 switch (type) {
423 case CHECKSUM_CRC32:
424 memcpy(data, &gb->romCrc32, sizeof(gb->romCrc32));
425 break;
426 }
427 return;
428}
429
430static void _GBCoreReset(struct mCore* core) {
431 struct GBCore* gbcore = (struct GBCore*) core;
432 struct GB* gb = (struct GB*) core->board;
433 if (gbcore->renderer.outputBuffer) {
434 GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
435 }
436
437 if (gb->memory.rom) {
438 int doColorOverride = 0;
439 mCoreConfigGetIntValue(&core->config, "useCgbColors", &doColorOverride);
440
441 struct GBCartridgeOverride override;
442 const struct GBCartridge* cart = (const struct GBCartridge*) &gb->memory.rom[0x100];
443 override.headerCrc32 = doCrc32(cart, sizeof(*cart));
444 if (GBOverrideFind(gbcore->overrides, &override) || (doColorOverride && GBOverrideColorFind(&override))) {
445 GBOverrideApply(gb, &override);
446 }
447
448 const char* modelGB = mCoreConfigGetValue(&core->config, "gb.model");
449 const char* modelSGB = mCoreConfigGetValue(&core->config, "sgb.model");
450 const char* modelCGB = mCoreConfigGetValue(&core->config, "cgb.model");
451 const char* modelCGBHybrid = mCoreConfigGetValue(&core->config, "cgb.hybridModel");
452 const char* modelCGBSGB = mCoreConfigGetValue(&core->config, "cgb.sgbModel");
453 if (modelGB || modelCGB || modelSGB || modelCGBHybrid || modelCGBSGB) {
454 int models = GBValidModels(gb->memory.rom);
455 switch (models) {
456 case GB_MODEL_SGB | GB_MODEL_MGB:
457 if (modelSGB) {
458 gb->model = GBNameToModel(modelSGB);
459 }
460 break;
461 case GB_MODEL_MGB:
462 if (modelGB) {
463 gb->model = GBNameToModel(modelGB);
464 }
465 break;
466 case GB_MODEL_MGB | GB_MODEL_CGB:
467 if (modelCGBHybrid) {
468 gb->model = GBNameToModel(modelCGBHybrid);
469 }
470 break;
471 case GB_MODEL_SGB | GB_MODEL_CGB: // TODO: Do these even exist?
472 case GB_MODEL_MGB | GB_MODEL_SGB | GB_MODEL_CGB:
473 if (modelCGBSGB) {
474 gb->model = GBNameToModel(modelCGBSGB);
475 }
476 break;
477 case GB_MODEL_CGB:
478 if (modelCGB) {
479 gb->model = GBNameToModel(modelCGB);
480 }
481 break;
482 }
483 }
484 }
485
486#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
487 if (!gb->biosVf && core->opts.useBios) {
488 struct VFile* bios = NULL;
489 bool found = false;
490 if (core->opts.bios) {
491 bios = VFileOpen(core->opts.bios, O_RDONLY);
492 if (bios && GBIsBIOS(bios)) {
493 found = true;
494 } else if (bios) {
495 bios->close(bios);
496 bios = NULL;
497 }
498 }
499 if (!found) {
500 GBDetectModel(gb);
501 const char* configPath = NULL;
502
503 switch (gb->model) {
504 case GB_MODEL_DMG:
505 case GB_MODEL_MGB: // TODO
506 configPath = mCoreConfigGetValue(&core->config, "gb.bios");
507 break;
508 case GB_MODEL_SGB:
509 case GB_MODEL_SGB2: // TODO
510 configPath = mCoreConfigGetValue(&core->config, "sgb.bios");
511 break;
512 case GB_MODEL_CGB:
513 case GB_MODEL_AGB:
514 configPath = mCoreConfigGetValue(&core->config, "gbc.bios");
515 break;
516 default:
517 break;
518 };
519 if (configPath) {
520 bios = VFileOpen(configPath, O_RDONLY);
521 }
522 if (bios && GBIsBIOS(bios)) {
523 found = true;
524 } else if (bios) {
525 bios->close(bios);
526 bios = NULL;
527 }
528 }
529 if (!found) {
530 char path[PATH_MAX];
531 mCoreConfigDirectory(path, PATH_MAX);
532 switch (gb->model) {
533 case GB_MODEL_DMG:
534 case GB_MODEL_MGB: // TODO
535 strncat(path, PATH_SEP "gb_bios.bin", PATH_MAX - strlen(path));
536 break;
537 case GB_MODEL_SGB:
538 case GB_MODEL_SGB2: // TODO
539 strncat(path, PATH_SEP "sgb_bios.bin", PATH_MAX - strlen(path));
540 break;
541 case GB_MODEL_CGB:
542 case GB_MODEL_AGB:
543 strncat(path, PATH_SEP "gbc_bios.bin", PATH_MAX - strlen(path));
544 break;
545 default:
546 break;
547 };
548 bios = VFileOpen(path, O_RDONLY);
549 if (bios && GBIsBIOS(bios)) {
550 found = true;
551 } else if (bios) {
552 bios->close(bios);
553 bios = NULL;
554 }
555 }
556 if (found && bios) {
557 GBLoadBIOS(gb, bios);
558 }
559 }
560#endif
561
562 SM83Reset(core->cpu);
563
564 if (core->opts.skipBios) {
565 GBSkipBIOS(core->board);
566 }
567}
568
569static void _GBCoreRunFrame(struct mCore* core) {
570 struct GB* gb = core->board;
571 int32_t frameCounter = gb->video.frameCounter;
572 while (gb->video.frameCounter == frameCounter) {
573 SM83Run(core->cpu);
574 }
575}
576
577static void _GBCoreRunLoop(struct mCore* core) {
578 SM83Run(core->cpu);
579}
580
581static void _GBCoreStep(struct mCore* core) {
582 struct SM83Core* cpu = core->cpu;
583 do {
584 SM83Tick(cpu);
585 } while (cpu->executionState != SM83_CORE_FETCH);
586}
587
588static size_t _GBCoreStateSize(struct mCore* core) {
589 UNUSED(core);
590 return sizeof(struct GBSerializedState);
591}
592
593static bool _GBCoreLoadState(struct mCore* core, const void* state) {
594 return GBDeserialize(core->board, state);
595}
596
597static bool _GBCoreSaveState(struct mCore* core, void* state) {
598 struct SM83Core* cpu = core->cpu;
599 while (cpu->executionState != SM83_CORE_FETCH) {
600 SM83Tick(cpu);
601 }
602 GBSerialize(core->board, state);
603 return true;
604}
605
606static void _GBCoreSetKeys(struct mCore* core, uint32_t keys) {
607 struct GBCore* gbcore = (struct GBCore*) core;
608 gbcore->keys = keys;
609 GBTestKeypadIRQ(core->board);
610}
611
612static void _GBCoreAddKeys(struct mCore* core, uint32_t keys) {
613 struct GBCore* gbcore = (struct GBCore*) core;
614 gbcore->keys |= keys;
615 GBTestKeypadIRQ(core->board);
616}
617
618static void _GBCoreClearKeys(struct mCore* core, uint32_t keys) {
619 struct GBCore* gbcore = (struct GBCore*) core;
620 gbcore->keys &= ~keys;
621}
622
623static int32_t _GBCoreFrameCounter(const struct mCore* core) {
624 const struct GB* gb = core->board;
625 return gb->video.frameCounter;
626}
627
628static int32_t _GBCoreFrameCycles(const struct mCore* core) {
629 UNUSED(core);
630 return GB_VIDEO_TOTAL_LENGTH;
631}
632
633static int32_t _GBCoreFrequency(const struct mCore* core) {
634 UNUSED(core);
635 // TODO: GB differences
636 return DMG_SM83_FREQUENCY;
637}
638
639static void _GBCoreGetGameTitle(const struct mCore* core, char* title) {
640 GBGetGameTitle(core->board, title);
641}
642
643static void _GBCoreGetGameCode(const struct mCore* core, char* title) {
644 GBGetGameCode(core->board, title);
645}
646
647static void _GBCoreSetPeripheral(struct mCore* core, int type, void* periph) {
648 struct GB* gb = core->board;
649 switch (type) {
650 case mPERIPH_ROTATION:
651 gb->memory.rotation = periph;
652 break;
653 case mPERIPH_RUMBLE:
654 gb->memory.rumble = periph;
655 break;
656 case mPERIPH_IMAGE_SOURCE:
657 gb->memory.cam = periph;
658 break;
659 default:
660 return;
661 }
662}
663
664static uint32_t _GBCoreBusRead8(struct mCore* core, uint32_t address) {
665 struct SM83Core* cpu = core->cpu;
666 return cpu->memory.load8(cpu, address);
667}
668
669static uint32_t _GBCoreBusRead16(struct mCore* core, uint32_t address) {
670 struct SM83Core* cpu = core->cpu;
671 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8);
672}
673
674static uint32_t _GBCoreBusRead32(struct mCore* core, uint32_t address) {
675 struct SM83Core* cpu = core->cpu;
676 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8) |
677 (cpu->memory.load8(cpu, address + 2) << 16) | (cpu->memory.load8(cpu, address + 3) << 24);
678}
679
680static void _GBCoreBusWrite8(struct mCore* core, uint32_t address, uint8_t value) {
681 struct SM83Core* cpu = core->cpu;
682 cpu->memory.store8(cpu, address, value);
683}
684
685static void _GBCoreBusWrite16(struct mCore* core, uint32_t address, uint16_t value) {
686 struct SM83Core* cpu = core->cpu;
687 cpu->memory.store8(cpu, address, value);
688 cpu->memory.store8(cpu, address + 1, value >> 8);
689}
690
691static void _GBCoreBusWrite32(struct mCore* core, uint32_t address, uint32_t value) {
692 struct SM83Core* cpu = core->cpu;
693 cpu->memory.store8(cpu, address, value);
694 cpu->memory.store8(cpu, address + 1, value >> 8);
695 cpu->memory.store8(cpu, address + 2, value >> 16);
696 cpu->memory.store8(cpu, address + 3, value >> 24);
697}
698
699static uint32_t _GBCoreRawRead8(struct mCore* core, uint32_t address, int segment) {
700 struct SM83Core* cpu = core->cpu;
701 return GBView8(cpu, address, segment);
702}
703
704static uint32_t _GBCoreRawRead16(struct mCore* core, uint32_t address, int segment) {
705 struct SM83Core* cpu = core->cpu;
706 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8);
707}
708
709static uint32_t _GBCoreRawRead32(struct mCore* core, uint32_t address, int segment) {
710 struct SM83Core* cpu = core->cpu;
711 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8) |
712 (GBView8(cpu, address + 2, segment) << 16) | (GBView8(cpu, address + 3, segment) << 24);
713}
714
715static void _GBCoreRawWrite8(struct mCore* core, uint32_t address, int segment, uint8_t value) {
716 struct SM83Core* cpu = core->cpu;
717 GBPatch8(cpu, address, value, NULL, segment);
718}
719
720static void _GBCoreRawWrite16(struct mCore* core, uint32_t address, int segment, uint16_t value) {
721 struct SM83Core* cpu = core->cpu;
722 GBPatch8(cpu, address, value, NULL, segment);
723 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
724}
725
726static void _GBCoreRawWrite32(struct mCore* core, uint32_t address, int segment, uint32_t value) {
727 struct SM83Core* cpu = core->cpu;
728 GBPatch8(cpu, address, value, NULL, segment);
729 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
730 GBPatch8(cpu, address + 2, value >> 16, NULL, segment);
731 GBPatch8(cpu, address + 3, value >> 24, NULL, segment);
732}
733
734size_t _GBListMemoryBlocks(const struct mCore* core, const struct mCoreMemoryBlock** blocks) {
735 const struct GB* gb = core->board;
736 switch (gb->model) {
737 case GB_MODEL_DMG:
738 case GB_MODEL_MGB:
739 case GB_MODEL_SGB:
740 case GB_MODEL_SGB2:
741 default:
742 *blocks = _GBMemoryBlocks;
743 return sizeof(_GBMemoryBlocks) / sizeof(*_GBMemoryBlocks);
744 case GB_MODEL_CGB:
745 case GB_MODEL_AGB:
746 *blocks = _GBCMemoryBlocks;
747 return sizeof(_GBCMemoryBlocks) / sizeof(*_GBCMemoryBlocks);
748 }
749}
750
751void* _GBGetMemoryBlock(struct mCore* core, size_t id, size_t* sizeOut) {
752 struct GB* gb = core->board;
753 bool isCgb = gb->model >= GB_MODEL_CGB;
754 switch (id) {
755 default:
756 return NULL;
757 case GB_REGION_CART_BANK0:
758 *sizeOut = gb->memory.romSize;
759 return gb->memory.rom;
760 case GB_REGION_VRAM:
761 *sizeOut = GB_SIZE_WORKING_RAM_BANK0 * (isCgb ? 1 : 2);
762 return gb->video.vram;
763 case GB_REGION_EXTERNAL_RAM:
764 *sizeOut = gb->sramSize;
765 return gb->memory.sram;
766 case GB_REGION_WORKING_RAM_BANK0:
767 *sizeOut = GB_SIZE_VRAM * (isCgb ? 8 : 2);
768 return gb->memory.wram;
769 case GB_BASE_OAM:
770 *sizeOut = GB_SIZE_OAM;
771 return gb->video.oam.raw;
772 case GB_BASE_HRAM:
773 *sizeOut = GB_SIZE_HRAM;
774 return gb->memory.hram;
775 }
776}
777
778#ifdef USE_DEBUGGERS
779static bool _GBCoreSupportsDebuggerType(struct mCore* core, enum mDebuggerType type) {
780 UNUSED(core);
781 switch (type) {
782 case DEBUGGER_CUSTOM:
783 case DEBUGGER_CLI:
784 return true;
785 default:
786 return false;
787 }
788}
789
790static struct mDebuggerPlatform* _GBCoreDebuggerPlatform(struct mCore* core) {
791 struct GBCore* gbcore = (struct GBCore*) core;
792 struct GB* gb = core->board;
793 if (!gbcore->debuggerPlatform) {
794 struct SM83Debugger* platform = (struct SM83Debugger*) GBDebuggerCreate(gb);
795 gbcore->debuggerPlatform = &platform->d;
796 }
797 return gbcore->debuggerPlatform;
798}
799
800static struct CLIDebuggerSystem* _GBCoreCliDebuggerSystem(struct mCore* core) {
801 return GBCLIDebuggerCreate(core);
802}
803
804static void _GBCoreAttachDebugger(struct mCore* core, struct mDebugger* debugger) {
805 struct SM83Core* cpu = core->cpu;
806 if (core->debugger) {
807 SM83HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
808 }
809 cpu->components[CPU_COMPONENT_DEBUGGER] = &debugger->d;
810 SM83HotplugAttach(cpu, CPU_COMPONENT_DEBUGGER);
811 core->debugger = debugger;
812}
813
814static void _GBCoreDetachDebugger(struct mCore* core) {
815 struct SM83Core* cpu = core->cpu;
816 if (core->debugger) {
817 SM83HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
818 }
819 cpu->components[CPU_COMPONENT_DEBUGGER] = NULL;
820 core->debugger = NULL;
821}
822
823static void _GBCoreLoadSymbols(struct mCore* core, struct VFile* vf) {
824 core->symbolTable = mDebuggerSymbolTableCreate();
825#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
826 if (!vf) {
827 vf = mDirectorySetOpenSuffix(&core->dirs, core->dirs.base, ".sym", O_RDONLY);
828 }
829#endif
830 if (!vf) {
831 return;
832 }
833 GBLoadSymbols(core->symbolTable, vf);
834}
835
836static bool _GBCoreLookupIdentifier(struct mCore* core, const char* name, int32_t* value, int* segment) {
837 UNUSED(core);
838 *segment = -1;
839 int i;
840 for (i = 0; i < GB_REG_MAX; ++i) {
841 const char* reg = GBIORegisterNames[i];
842 if (reg && strcasecmp(reg, name) == 0) {
843 *value = GB_BASE_IO | i;
844 return true;
845 }
846 }
847 return false;
848}
849#endif
850
851static struct mCheatDevice* _GBCoreCheatDevice(struct mCore* core) {
852 struct GBCore* gbcore = (struct GBCore*) core;
853 if (!gbcore->cheatDevice) {
854 gbcore->cheatDevice = GBCheatDeviceCreate();
855 ((struct SM83Core*) core->cpu)->components[CPU_COMPONENT_CHEAT_DEVICE] = &gbcore->cheatDevice->d;
856 SM83HotplugAttach(core->cpu, CPU_COMPONENT_CHEAT_DEVICE);
857 gbcore->cheatDevice->p = core;
858 }
859 return gbcore->cheatDevice;
860}
861
862static size_t _GBCoreSavedataClone(struct mCore* core, void** sram) {
863 struct GB* gb = core->board;
864 struct VFile* vf = gb->sramVf;
865 if (vf) {
866 *sram = malloc(vf->size(vf));
867 vf->seek(vf, 0, SEEK_SET);
868 return vf->read(vf, *sram, vf->size(vf));
869 }
870 if (gb->sramSize) {
871 *sram = malloc(gb->sramSize);
872 memcpy(*sram, gb->memory.sram, gb->sramSize);
873 return gb->sramSize;
874 }
875 *sram = NULL;
876 return 0;
877}
878
879static bool _GBCoreSavedataRestore(struct mCore* core, const void* sram, size_t size, bool writeback) {
880 struct GB* gb = core->board;
881 if (!writeback) {
882 struct VFile* vf = VFileMemChunk(sram, size);
883 GBSavedataMask(gb, vf, true);
884 return true;
885 }
886 struct VFile* vf = gb->sramVf;
887 if (vf) {
888 vf->seek(vf, 0, SEEK_SET);
889 return vf->write(vf, sram, size) > 0;
890 }
891 if (size > 0x20000) {
892 size = 0x20000;
893 }
894 GBResizeSram(gb, size);
895 memcpy(gb->memory.sram, sram, size);
896 return true;
897}
898
899static size_t _GBCoreListVideoLayers(const struct mCore* core, const struct mCoreChannelInfo** info) {
900 UNUSED(core);
901 if (info) {
902 *info = _GBVideoLayers;
903 }
904 return sizeof(_GBVideoLayers) / sizeof(*_GBVideoLayers);
905}
906
907static size_t _GBCoreListAudioChannels(const struct mCore* core, const struct mCoreChannelInfo** info) {
908 UNUSED(core);
909 if (info) {
910 *info = _GBAudioChannels;
911 }
912 return sizeof(_GBAudioChannels) / sizeof(*_GBAudioChannels);
913}
914
915static void _GBCoreEnableVideoLayer(struct mCore* core, size_t id, bool enable) {
916 struct GB* gb = core->board;
917 switch (id) {
918 case GB_LAYER_BACKGROUND:
919 gb->video.renderer->disableBG = !enable;
920 break;
921 case GB_LAYER_WINDOW:
922 gb->video.renderer->disableWIN = !enable;
923 break;
924 case GB_LAYER_OBJ:
925 gb->video.renderer->disableOBJ = !enable;
926 break;
927 default:
928 break;
929 }
930}
931
932static void _GBCoreEnableAudioChannel(struct mCore* core, size_t id, bool enable) {
933 struct GB* gb = core->board;
934 switch (id) {
935 case 0:
936 case 1:
937 case 2:
938 case 3:
939 gb->audio.forceDisableCh[id] = !enable;
940 break;
941 default:
942 break;
943 }
944}
945
946static void _GBCoreAdjustVideoLayer(struct mCore* core, size_t id, int32_t x, int32_t y) {
947 struct GBCore* gbcore = (struct GBCore*) core;
948 switch (id) {
949 case GB_LAYER_BACKGROUND:
950 gbcore->renderer.offsetScx = x;
951 gbcore->renderer.offsetScy = y;
952 break;
953 case GB_LAYER_WINDOW:
954 gbcore->renderer.offsetWx = x;
955 gbcore->renderer.offsetWy = y;
956 break;
957 case GB_LAYER_OBJ:
958 gbcore->renderer.objOffsetX = x;
959 gbcore->renderer.objOffsetY = y;
960 break;
961 default:
962 return;
963 }
964}
965
966#ifndef MINIMAL_CORE
967static void _GBCoreStartVideoLog(struct mCore* core, struct mVideoLogContext* context) {
968 struct GBCore* gbcore = (struct GBCore*) core;
969 struct GB* gb = core->board;
970 gbcore->logContext = context;
971
972 int channelId = mVideoLoggerAddChannel(context);
973 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
974 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, false);
975 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, context, channelId);
976 gbcore->proxyRenderer.logger->block = false;
977
978 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, &gbcore->renderer.d);
979 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
980}
981
982static void _GBCoreEndVideoLog(struct mCore* core) {
983 struct GBCore* gbcore = (struct GBCore*) core;
984 struct GB* gb = core->board;
985 if (gbcore->proxyRenderer.logger) {
986 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
987 free(gbcore->proxyRenderer.logger);
988 gbcore->proxyRenderer.logger = NULL;
989 }
990}
991#endif
992
993struct mCore* GBCoreCreate(void) {
994 struct GBCore* gbcore = malloc(sizeof(*gbcore));
995 struct mCore* core = &gbcore->d;
996 memset(&core->opts, 0, sizeof(core->opts));
997 core->cpu = NULL;
998 core->board = NULL;
999 core->debugger = NULL;
1000 core->symbolTable = NULL;
1001 core->init = _GBCoreInit;
1002 core->deinit = _GBCoreDeinit;
1003 core->platform = _GBCorePlatform;
1004 core->supportsFeature = _GBCoreSupportsFeature;
1005 core->setSync = _GBCoreSetSync;
1006 core->loadConfig = _GBCoreLoadConfig;
1007 core->reloadConfigOption = _GBCoreReloadConfigOption;
1008 core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
1009 core->setVideoBuffer = _GBCoreSetVideoBuffer;
1010 core->setVideoGLTex = _GBCoreSetVideoGLTex;
1011 core->getPixels = _GBCoreGetPixels;
1012 core->putPixels = _GBCorePutPixels;
1013 core->getAudioChannel = _GBCoreGetAudioChannel;
1014 core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
1015 core->getAudioBufferSize = _GBCoreGetAudioBufferSize;
1016 core->setAVStream = _GBCoreSetAVStream;
1017 core->addCoreCallbacks = _GBCoreAddCoreCallbacks;
1018 core->clearCoreCallbacks = _GBCoreClearCoreCallbacks;
1019 core->isROM = GBIsROM;
1020 core->loadROM = _GBCoreLoadROM;
1021 core->loadBIOS = _GBCoreLoadBIOS;
1022 core->loadSave = _GBCoreLoadSave;
1023 core->loadTemporarySave = _GBCoreLoadTemporarySave;
1024 core->loadPatch = _GBCoreLoadPatch;
1025 core->unloadROM = _GBCoreUnloadROM;
1026 core->checksum = _GBCoreChecksum;
1027 core->reset = _GBCoreReset;
1028 core->runFrame = _GBCoreRunFrame;
1029 core->runLoop = _GBCoreRunLoop;
1030 core->step = _GBCoreStep;
1031 core->stateSize = _GBCoreStateSize;
1032 core->loadState = _GBCoreLoadState;
1033 core->saveState = _GBCoreSaveState;
1034 core->setKeys = _GBCoreSetKeys;
1035 core->addKeys = _GBCoreAddKeys;
1036 core->clearKeys = _GBCoreClearKeys;
1037 core->frameCounter = _GBCoreFrameCounter;
1038 core->frameCycles = _GBCoreFrameCycles;
1039 core->frequency = _GBCoreFrequency;
1040 core->getGameTitle = _GBCoreGetGameTitle;
1041 core->getGameCode = _GBCoreGetGameCode;
1042 core->setPeripheral = _GBCoreSetPeripheral;
1043 core->busRead8 = _GBCoreBusRead8;
1044 core->busRead16 = _GBCoreBusRead16;
1045 core->busRead32 = _GBCoreBusRead32;
1046 core->busWrite8 = _GBCoreBusWrite8;
1047 core->busWrite16 = _GBCoreBusWrite16;
1048 core->busWrite32 = _GBCoreBusWrite32;
1049 core->rawRead8 = _GBCoreRawRead8;
1050 core->rawRead16 = _GBCoreRawRead16;
1051 core->rawRead32 = _GBCoreRawRead32;
1052 core->rawWrite8 = _GBCoreRawWrite8;
1053 core->rawWrite16 = _GBCoreRawWrite16;
1054 core->rawWrite32 = _GBCoreRawWrite32;
1055 core->listMemoryBlocks = _GBListMemoryBlocks;
1056 core->getMemoryBlock = _GBGetMemoryBlock;
1057#ifdef USE_DEBUGGERS
1058 core->supportsDebuggerType = _GBCoreSupportsDebuggerType;
1059 core->debuggerPlatform = _GBCoreDebuggerPlatform;
1060 core->cliDebuggerSystem = _GBCoreCliDebuggerSystem;
1061 core->attachDebugger = _GBCoreAttachDebugger;
1062 core->detachDebugger = _GBCoreDetachDebugger;
1063 core->loadSymbols = _GBCoreLoadSymbols;
1064 core->lookupIdentifier = _GBCoreLookupIdentifier;
1065#endif
1066 core->cheatDevice = _GBCoreCheatDevice;
1067 core->savedataClone = _GBCoreSavedataClone;
1068 core->savedataRestore = _GBCoreSavedataRestore;
1069 core->listVideoLayers = _GBCoreListVideoLayers;
1070 core->listAudioChannels = _GBCoreListAudioChannels;
1071 core->enableVideoLayer = _GBCoreEnableVideoLayer;
1072 core->enableAudioChannel = _GBCoreEnableAudioChannel;
1073 core->adjustVideoLayer = _GBCoreAdjustVideoLayer;
1074#ifndef MINIMAL_CORE
1075 core->startVideoLog = _GBCoreStartVideoLog;
1076 core->endVideoLog = _GBCoreEndVideoLog;
1077#endif
1078 return core;
1079}
1080
1081#ifndef MINIMAL_CORE
1082static void _GBVLPStartFrameCallback(void *context) {
1083 struct mCore* core = context;
1084 struct GBCore* gbcore = (struct GBCore*) core;
1085 struct GB* gb = core->board;
1086
1087 if (!mVideoLoggerRendererRun(gbcore->proxyRenderer.logger, true)) {
1088 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
1089 mVideoLogContextRewind(gbcore->logContext, core);
1090 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
1091 gb->earlyExit = true;
1092 }
1093}
1094
1095static bool _GBVLPInit(struct mCore* core) {
1096 struct GBCore* gbcore = (struct GBCore*) core;
1097 if (!_GBCoreInit(core)) {
1098 return false;
1099 }
1100 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
1101 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, true);
1102 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, NULL);
1103 memset(&gbcore->logCallbacks, 0, sizeof(gbcore->logCallbacks));
1104 gbcore->logCallbacks.videoFrameStarted = _GBVLPStartFrameCallback;
1105 gbcore->logCallbacks.context = core;
1106 core->addCoreCallbacks(core, &gbcore->logCallbacks);
1107 core->videoLogger = gbcore->proxyRenderer.logger;
1108 return true;
1109}
1110
1111static void _GBVLPDeinit(struct mCore* core) {
1112 struct GBCore* gbcore = (struct GBCore*) core;
1113 if (gbcore->logContext) {
1114 mVideoLogContextDestroy(core, gbcore->logContext, true);
1115 }
1116 _GBCoreDeinit(core);
1117}
1118
1119static void _GBVLPReset(struct mCore* core) {
1120 struct GBCore* gbcore = (struct GBCore*) core;
1121 struct GB* gb = (struct GB*) core->board;
1122 if (gb->video.renderer == &gbcore->proxyRenderer.d) {
1123 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
1124 } else if (gbcore->renderer.outputBuffer) {
1125 struct GBVideoRenderer* renderer = &gbcore->renderer.d;
1126 GBVideoAssociateRenderer(&gb->video, renderer);
1127 }
1128
1129 SM83Reset(core->cpu);
1130 mVideoLogContextRewind(gbcore->logContext, core);
1131 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
1132
1133 // Make sure CPU loop never spins
1134 gb->memory.ie = 0;
1135 gb->memory.ime = false;
1136 GBHalt(gb->cpu);
1137}
1138
1139static bool _GBVLPLoadROM(struct mCore* core, struct VFile* vf) {
1140 struct GBCore* gbcore = (struct GBCore*) core;
1141 gbcore->logContext = mVideoLogContextCreate(NULL);
1142 if (!mVideoLogContextLoad(gbcore->logContext, vf)) {
1143 mVideoLogContextDestroy(core, gbcore->logContext, false);
1144 gbcore->logContext = NULL;
1145 return false;
1146 }
1147 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, gbcore->logContext, 0);
1148 return true;
1149}
1150
1151static bool _GBVLPLoadState(struct mCore* core, const void* buffer) {
1152 struct GB* gb = (struct GB*) core->board;
1153 const struct GBSerializedState* state = buffer;
1154
1155 gb->timing.root = NULL;
1156 gb->model = state->model;
1157
1158 gb->cpu->pc = GB_BASE_HRAM;
1159 gb->cpu->memory.setActiveRegion(gb->cpu, gb->cpu->pc);
1160
1161 GBVideoReset(&gb->video);
1162 GBVideoDeserialize(&gb->video, state);
1163 GBIODeserialize(gb, state);
1164 GBAudioReset(&gb->audio);
1165 if (gb->model & GB_MODEL_SGB) {
1166 GBSGBDeserialize(gb, state);
1167 }
1168
1169 // Make sure CPU loop never spins
1170 gb->memory.ie = 0;
1171 gb->memory.ime = false;
1172 GBHalt(gb->cpu);
1173
1174 return true;
1175}
1176
1177static bool _returnTrue(struct VFile* vf) {
1178 UNUSED(vf);
1179 return true;
1180}
1181
1182struct mCore* GBVideoLogPlayerCreate(void) {
1183 struct mCore* core = GBCoreCreate();
1184 core->init = _GBVLPInit;
1185 core->deinit = _GBVLPDeinit;
1186 core->reset = _GBVLPReset;
1187 core->loadROM = _GBVLPLoadROM;
1188 core->loadState = _GBVLPLoadState;
1189 core->isROM = _returnTrue;
1190 return core;
1191}
1192#else
1193struct mCore* GBVideoLogPlayerCreate(void) {
1194 return false;
1195}
1196#endif