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/core/core.h>
  7
  8#include <mgba/core/log.h>
  9#include <mgba/core/serialize.h>
 10#include <mgba-util/vfs.h>
 11
 12#ifdef M_CORE_GB
 13#include <mgba/gb/core.h>
 14// TODO: Fix layering violation
 15#include <mgba/internal/gb/gb.h>
 16#endif
 17#ifdef M_CORE_GBA
 18#include <mgba/gba/core.h>
 19#include <mgba/internal/gba/gba.h>
 20#endif
 21
 22static struct mCoreFilter {
 23	bool (*filter)(struct VFile*);
 24	struct mCore* (*open)(void);
 25	enum mPlatform platform;
 26} _filters[] = {
 27#ifdef M_CORE_GBA
 28	{ GBAIsROM, GBACoreCreate, PLATFORM_GBA },
 29#endif
 30#ifdef M_CORE_GB
 31	{ GBIsROM, GBCoreCreate, PLATFORM_GB },
 32#endif
 33	{ 0, 0, PLATFORM_NONE }
 34};
 35
 36struct mCore* mCoreFindVF(struct VFile* vf) {
 37	if (!vf) {
 38		return NULL;
 39	}
 40	struct mCoreFilter* filter;
 41	for (filter = &_filters[0]; filter->filter; ++filter) {
 42		if (filter->filter(vf)) {
 43			break;
 44		}
 45	}
 46	if (filter->open) {
 47		return filter->open();
 48	}
 49	return NULL;
 50}
 51
 52enum mPlatform mCoreIsCompatible(struct VFile* vf) {
 53	if (!vf) {
 54		return false;
 55	}
 56	struct mCoreFilter* filter;
 57	for (filter = &_filters[0]; filter->filter; ++filter) {
 58		if (filter->filter(vf)) {
 59			return filter->platform;
 60		}
 61	}
 62	return PLATFORM_NONE;
 63}
 64
 65#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
 66#include <mgba-util/png-io.h>
 67
 68#ifdef PSP2
 69#include <psp2/photoexport.h>
 70#endif
 71
 72struct mCore* mCoreFind(const char* path) {
 73	struct VDir* archive = VDirOpenArchive(path);
 74	struct mCore* core = NULL;
 75	if (archive) {
 76		struct VDirEntry* dirent = archive->listNext(archive);
 77		while (dirent) {
 78			struct VFile* vf = archive->openFile(archive, dirent->name(dirent), O_RDONLY);
 79			if (!vf) {
 80				dirent = archive->listNext(archive);
 81				continue;
 82			}
 83			core = mCoreFindVF(vf);
 84			vf->close(vf);
 85			if (core) {
 86				break;
 87			}
 88			dirent = archive->listNext(archive);
 89		}
 90		archive->close(archive);
 91	} else {
 92		struct VFile* vf = VFileOpen(path, O_RDONLY);
 93		if (!vf) {
 94			return NULL;
 95		}
 96		core = mCoreFindVF(vf);
 97		vf->close(vf);
 98	}
 99	if (core) {
100		return core;
101	}
102	return NULL;
103}
104
105bool mCoreLoadFile(struct mCore* core, const char* path) {
106	struct VFile* rom = mDirectorySetOpenPath(&core->dirs, path, core->isROM);
107	if (!rom) {
108		return false;
109	}
110
111	bool ret = core->loadROM(core, rom);
112	if (!ret) {
113		rom->close(rom);
114	}
115	return ret;
116}
117
118bool mCoreAutoloadSave(struct mCore* core) {
119	return core->loadSave(core, mDirectorySetOpenSuffix(&core->dirs, core->dirs.save, ".sav", O_CREAT | O_RDWR));
120}
121
122bool mCoreAutoloadPatch(struct mCore* core) {
123	return core->loadPatch(core, mDirectorySetOpenSuffix(&core->dirs, core->dirs.patch, ".ups", O_RDONLY)) ||
124	       core->loadPatch(core, mDirectorySetOpenSuffix(&core->dirs, core->dirs.patch, ".ips", O_RDONLY)) ||
125	       core->loadPatch(core, mDirectorySetOpenSuffix(&core->dirs, core->dirs.patch, ".bps", O_RDONLY));
126}
127
128bool mCoreSaveState(struct mCore* core, int slot, int flags) {
129	struct VFile* vf = mCoreGetState(core, slot, true);
130	if (!vf) {
131		return false;
132	}
133	bool success = mCoreSaveStateNamed(core, vf, flags);
134	vf->close(vf);
135	if (success) {
136		mLOG(STATUS, INFO, "State %i saved", slot);
137	} else {
138		mLOG(STATUS, INFO, "State %i failed to save", slot);
139	}
140
141	return success;
142}
143
144bool mCoreLoadState(struct mCore* core, int slot, int flags) {
145	struct VFile* vf = mCoreGetState(core, slot, false);
146	if (!vf) {
147		return false;
148	}
149	bool success = mCoreLoadStateNamed(core, vf, flags);
150	vf->close(vf);
151	if (success) {
152		mLOG(STATUS, INFO, "State %i loaded", slot);
153	} else {
154		mLOG(STATUS, INFO, "State %i failed to loaded", slot);
155	}
156
157	return success;
158}
159
160struct VFile* mCoreGetState(struct mCore* core, int slot, bool write) {
161	char name[PATH_MAX];
162	snprintf(name, sizeof(name), "%s.ss%i", core->dirs.baseName, slot);
163	return core->dirs.state->openFile(core->dirs.state, name, write ? (O_CREAT | O_TRUNC | O_RDWR) : O_RDONLY);
164}
165
166void mCoreDeleteState(struct mCore* core, int slot) {
167	char name[PATH_MAX];
168	snprintf(name, sizeof(name), "%s.ss%i", core->dirs.baseName, slot);
169	core->dirs.state->deleteFile(core->dirs.state, name);
170}
171
172void mCoreTakeScreenshot(struct mCore* core) {
173#ifdef USE_PNG
174	size_t stride;
175	const void* pixels = 0;
176	unsigned width, height;
177	core->desiredVideoDimensions(core, &width, &height);
178	struct VFile* vf;
179#ifndef PSP2
180	vf = VDirFindNextAvailable(core->dirs.screenshot, core->dirs.baseName, "-", ".png", O_CREAT | O_TRUNC | O_WRONLY);
181#else
182	vf = VFileMemChunk(0, 0);
183#endif
184	bool success = false;
185	if (vf) {
186		core->getPixels(core, &pixels, &stride);
187		png_structp png = PNGWriteOpen(vf);
188		png_infop info = PNGWriteHeader(png, width, height);
189		success = PNGWritePixels(png, width, height, stride, pixels);
190		PNGWriteClose(png, info);
191#ifdef PSP2
192		void* data = vf->map(vf, 0, 0);
193		PhotoExportParam param = {
194			0,
195			NULL,
196			NULL,
197			NULL,
198			{ 0 }
199		};
200		scePhotoExportFromData(data, vf->size(vf), &param, NULL, NULL, NULL, NULL, 0);
201#endif
202		vf->close(vf);
203	}
204	if (success) {
205		mLOG(STATUS, INFO, "Screenshot saved");
206		return;
207	}
208#else
209	UNUSED(core);
210#endif
211	mLOG(STATUS, WARN, "Failed to take screenshot");
212}
213#endif
214
215void mCoreInitConfig(struct mCore* core, const char* port) {
216	mCoreConfigInit(&core->config, port);
217}
218
219void mCoreLoadConfig(struct mCore* core) {
220#ifndef MINIMAL_CORE
221	mCoreConfigLoad(&core->config);
222#endif
223	mCoreLoadForeignConfig(core, &core->config);
224}
225
226void mCoreLoadForeignConfig(struct mCore* core, const struct mCoreConfig* config) {
227	mCoreConfigMap(config, &core->opts);
228#ifndef MINIMAL_CORE
229	mDirectorySetMapOptions(&core->dirs, &core->opts);
230#endif
231	if (core->opts.audioBuffers) {
232		core->setAudioBufferSize(core, core->opts.audioBuffers);
233	}
234	core->loadConfig(core, config);
235}
236
237void mCoreSetRTC(struct mCore* core, struct mRTCSource* rtc) {
238	core->rtc.custom = rtc;
239	core->rtc.override = RTC_CUSTOM_START;
240}