[pcsx_rearmed.git] / libpcsxcore / ppf.c

/*  PPF Patch Support for PCSX-Reloaded
 *  Copyright (c) 2009, Wei Mingzhi <whistler_wmz@users.sf.net>.
 *
 *  Based on P.E.Op.S CDR Plugin by Pete Bernert.
 *  Copyright (c) 2002, Pete Bernert.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
 */

#include "psxcommon.h"
#include "ppf.h"
#include "cdrom.h"

typedef struct tagPPF_DATA {
	s32					addr;
	s32					pos;
	s32					anz;
	struct tagPPF_DATA	*pNext;
} PPF_DATA;

typedef struct tagPPF_CACHE {
	s32					addr;
	struct tagPPF_DATA	*pNext;
} PPF_CACHE;

static PPF_CACHE		*ppfCache = NULL;
static PPF_DATA			*ppfHead = NULL, *ppfLast = NULL;
static int				iPPFNum = 0;

// using a linked data list, and address array
static void FillPPFCache() {
	PPF_DATA		*p;
	PPF_CACHE		*pc;
	s32				lastaddr;

	p = ppfHead;
	lastaddr = -1;
	iPPFNum = 0;

	while (p != NULL) {
		if (p->addr != lastaddr) iPPFNum++;
		lastaddr = p->addr;
		p = p->pNext;
	}

	if (iPPFNum <= 0) return;

	pc = ppfCache = (PPF_CACHE *)malloc(iPPFNum * sizeof(PPF_CACHE));

	iPPFNum--;
	p = ppfHead;
	lastaddr = -1;

	while (p != NULL) {
		if (p->addr != lastaddr) {
			pc->addr = p->addr;
			pc->pNext = p;
			pc++;
		}
		lastaddr = p->addr;
		p = p->pNext;
	}
}

void FreePPFCache() {
	PPF_DATA *p = ppfHead;
	void *pn;

	while (p != NULL) {
		pn = p->pNext;
		free(p);
		p = (PPF_DATA *)pn;
	}
	ppfHead = NULL;
	ppfLast = NULL;

	if (ppfCache != NULL) free(ppfCache);
	ppfCache = NULL;
}

void CheckPPFCache(unsigned char *pB, unsigned char m, unsigned char s, unsigned char f) {
	PPF_CACHE *pcstart, *pcend, *pcpos;
	int addr = MSF2SECT(btoi(m), btoi(s), btoi(f)), pos, anz, start;

	if (ppfCache == NULL) return;

	pcstart = ppfCache;
	if (addr < pcstart->addr) return;
	pcend = ppfCache + iPPFNum;
	if (addr > pcend->addr) return;

	while (1) {
		if (addr == pcend->addr) { pcpos = pcend; break; }

		pcpos = pcstart + (pcend - pcstart) / 2;
		if (pcpos == pcstart) break;
		if (addr < pcpos->addr) {
			pcend = pcpos;
			continue;
		}
		if (addr > pcpos->addr) {
			pcstart = pcpos;
			continue;
		}
		break;
	}

	if (addr == pcpos->addr) {
		PPF_DATA *p = pcpos->pNext;
		while (p != NULL && p->addr == addr) {
			pos = p->pos - (CD_FRAMESIZE_RAW - DATA_SIZE);
			anz = p->anz;
			if (pos < 0) { start = -pos; pos = 0; anz -= start; }
			else start = 0;
			memcpy(pB + pos, (unsigned char *)(p + 1) + start, anz);
			p = p->pNext;
		}
	}
}

static void AddToPPF(s32 ladr, s32 pos, s32 anz, unsigned char *ppfmem) {
	if (ppfHead == NULL) {
		ppfHead = (PPF_DATA *)malloc(sizeof(PPF_DATA) + anz);
		ppfHead->addr = ladr;
		ppfHead->pNext = NULL;
		ppfHead->pos = pos;
		ppfHead->anz = anz;
		memcpy(ppfHead + 1, ppfmem, anz);
		iPPFNum = 1;
		ppfLast = ppfHead;
	} else {
		PPF_DATA *p = ppfHead;
		PPF_DATA *plast = NULL;
		PPF_DATA *padd;

		if (ladr > ppfLast->addr || (ladr == ppfLast->addr && pos > ppfLast->pos)) {
			p = NULL;
			plast = ppfLast;
		} else {
			while (p != NULL) {
				if (ladr < p->addr) break;
				if (ladr == p->addr) {
					while (p && ladr == p->addr && pos > p->pos) {
						plast = p;
						p = p->pNext;
					}
					break;
				}
				plast = p;
				p = p->pNext;
			}
		}

		padd = (PPF_DATA *)malloc(sizeof(PPF_DATA) + anz);
		padd->addr = ladr;
		padd->pNext = p;
		padd->pos = pos;
		padd->anz = anz;
		memcpy(padd + 1, ppfmem, anz);
		iPPFNum++;
		if (plast == NULL) ppfHead = padd;
		else plast->pNext = padd;

		if (padd->pNext == NULL) ppfLast = padd;
	}
}

void BuildPPFCache() {
	FILE			*ppffile;
	char			buffer[12];
	char			method, undo = 0, blockcheck = 0;
	int				dizlen, dizyn;
	unsigned char	ppfmem[512];
	char			szPPF[MAXPATHLEN * 2];
	int				count, seekpos, pos;
	u32				anz; // use 32-bit to avoid stupid overflows
	s32				ladr, off, anx;

	FreePPFCache();

	if (CdromId[0] == '\0') return;

	// Generate filename in the format of SLUS_123.45
	buffer[0] = toupper(CdromId[0]);
	buffer[1] = toupper(CdromId[1]);
	buffer[2] = toupper(CdromId[2]);
	buffer[3] = toupper(CdromId[3]);
	buffer[4] = '_';
	buffer[5] = CdromId[4];
	buffer[6] = CdromId[5];
	buffer[7] = CdromId[6];
	buffer[8] = '.';
	buffer[9] = CdromId[7];
	buffer[10] = CdromId[8];
	buffer[11] = '\0';

	sprintf(szPPF, "%s%s", Config.PatchesDir, buffer);

	ppffile = fopen(szPPF, "rb");
	if (ppffile == NULL) return;

	memset(buffer, 0, 5);
	if (fread(buffer, 1, 3, ppffile) != 3)
		goto fail_io;

	if (strcmp(buffer, "PPF") != 0) {
		SysPrintf(_("Invalid PPF patch: %s.\n"), szPPF);
		fclose(ppffile);
		return;
	}

	fseek(ppffile, 5, SEEK_SET);
	method = fgetc(ppffile);

	switch (method) {
		case 0: // ppf1
			fseek(ppffile, 0, SEEK_END);
			count = ftell(ppffile);
			count -= 56;
			seekpos = 56;
			break;

		case 1: // ppf2
			fseek(ppffile, -8, SEEK_END);

			memset(buffer, 0, 5);
			if (fread(buffer, 1, 4, ppffile) != 4)
				goto fail_io;

			if (strcmp(".DIZ", buffer) != 0) {
				dizyn = 0;
			} else {
				if (fread(&dizlen, 1, 4, ppffile) != 4)
					goto fail_io;
				dizlen = SWAP32(dizlen);
				dizyn = 1;
			}

			fseek(ppffile, 0, SEEK_END);
			count = ftell(ppffile);

			if (dizyn == 0) {
				count -= 1084;
				seekpos = 1084;
			} else {
				count -= 1084;
				count -= 38;
				count -= dizlen;
				seekpos = 1084;
			}
			break;

		case 2: // ppf3
			fseek(ppffile, 57, SEEK_SET);
			blockcheck = fgetc(ppffile);
			undo = fgetc(ppffile);

			fseek(ppffile, -6, SEEK_END);
			memset(buffer, 0, 5);
			if (fread(buffer, 1, 4, ppffile) != 4)
				goto fail_io;
			dizlen = 0;

			if (strcmp(".DIZ", buffer) == 0) {
				fseek(ppffile, -2, SEEK_END);
				// TODO: Endian/size unsafe?
				if (fread(&dizlen, 1, 2, ppffile) != 2)
					goto fail_io;
				dizlen = SWAP32(dizlen);
				dizlen += 36;
			}

			fseek(ppffile, 0, SEEK_END);
			count = ftell(ppffile);
			count -= dizlen;

			if (blockcheck) {
				seekpos = 1084;
				count -= 1084;
			} else {
				seekpos = 60;
				count -= 60;
			}
			break;

		default:
			fclose(ppffile);
			SysPrintf(_("Unsupported PPF version (%d).\n"), method + 1);
			return;
	}

	// now do the data reading
	do {                                                
		fseek(ppffile, seekpos, SEEK_SET);
		if (fread(&pos, 1, sizeof(pos), ppffile) != sizeof(pos))
			goto fail_io;
		pos = SWAP32(pos);

		if (method == 2) {
			// skip 4 bytes on ppf3 (no int64 support here)
			if (fread(buffer, 1, 4, ppffile) != 4)
				goto fail_io;
		}

		anz = fgetc(ppffile);
		if (fread(ppfmem, 1, anz, ppffile) != anz)
			goto fail_io;

		ladr = pos / CD_FRAMESIZE_RAW;
		off = pos % CD_FRAMESIZE_RAW;

		if (off + anz > CD_FRAMESIZE_RAW) {
			anx = off + anz - CD_FRAMESIZE_RAW;
			anz -= (unsigned char)anx;
			AddToPPF(ladr + 1, 0, anx, &ppfmem[anz]);
		}

		AddToPPF(ladr, off, anz, ppfmem); // add to link list

		if (method == 2) {
			if (undo) anz += anz;
			anz += 4;
		}

		seekpos = seekpos + 5 + anz;
		count = count - 5 - anz;
	} while (count != 0); // loop til end

	fclose(ppffile);

	FillPPFCache(); // build address array

	SysPrintf(_("Loaded PPF %d.0 patch: %s.\n"), method + 1, szPPF);

fail_io:
#ifndef NDEBUG
	SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
#endif
	fclose(ppffile);
}

// redump.org SBI files, slightly different handling from PCSX-Reloaded
unsigned char *sbi_sectors;

int LoadSBI(const char *fname, int sector_count) {
	int good_sectors = 0;
	int clean_eof = 0;
	char buffer[16];
	FILE *sbihandle;
	u8 sbitime[3], t;
	int s;

	sbihandle = fopen(fname, "rb");
	if (sbihandle == NULL)
		return -1;

	sbi_sectors = calloc(1, sector_count / 8);
	if (sbi_sectors == NULL)
		goto end;

	// 4-byte SBI header
	if (fread(buffer, 1, 4, sbihandle) != 4)
		goto end;

	while (1) {
		s = fread(sbitime, 1, 3, sbihandle);
		if (s != 3)
		{
			if (s == 0)
				clean_eof = 1;
			break;
		}
		s = MSF2SECT(btoi(sbitime[0]), btoi(sbitime[1]), btoi(sbitime[2]));
		if (s < sector_count) {
			sbi_sectors[s >> 3] |= 1 << (s&7);
			good_sectors++;
		}
		else
			SysPrintf(_("SBI sector %d >= %d?\n"), s, sector_count);

		// skip to the next record
		if (fread(&t, 1, sizeof(t), sbihandle) != sizeof(t))
			break;
		s = -1;
		switch (t) {
		default:
		case 1:
			s = 10;
			break;
		case 2:
		case 3:
			s = 3;
			break;
		}
		if (s < 0)
			break;
		if (fseek(sbihandle, s, SEEK_CUR))
			break;
	}

	fclose(sbihandle);
	return 0;

end:
	if (!clean_eof)
		SysPrintf(_("SBI: parse failure at 0x%lx\n"), ftell(sbihandle));
	if (!good_sectors) {
		free(sbi_sectors);
		sbi_sectors = NULL;
	}
	fclose(sbihandle);
	return sbi_sectors ? 0 : -1;
}

void UnloadSBI(void) {
	if (sbi_sectors) {
		free(sbi_sectors);
		sbi_sectors = NULL;
	}
}
Commit	Line	Data
ef79bbde P	1	/* PPF Patch Support for PCSX-Reloaded
	2	* Copyright (c) 2009, Wei Mingzhi <whistler_wmz@users.sf.net>.
	3	*
	4	* Based on P.E.Op.S CDR Plugin by Pete Bernert.
	5	* Copyright (c) 2002, Pete Bernert.
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
	20	*/
	21
	22	#include "psxcommon.h"
	23	#include "ppf.h"
	24	#include "cdrom.h"
	25
	26	typedef struct tagPPF_DATA {
	27	s32 addr;
	28	s32 pos;
	29	s32 anz;
	30	struct tagPPF_DATA *pNext;
	31	} PPF_DATA;
	32
	33	typedef struct tagPPF_CACHE {
	34	s32 addr;
	35	struct tagPPF_DATA *pNext;
	36	} PPF_CACHE;
	37
	38	static PPF_CACHE *ppfCache = NULL;
	39	static PPF_DATA ppfHead = NULL, ppfLast = NULL;
	40	static int iPPFNum = 0;
	41
	42	// using a linked data list, and address array
	43	static void FillPPFCache() {
	44	PPF_DATA *p;
	45	PPF_CACHE *pc;
	46	s32 lastaddr;
	47
	48	p = ppfHead;
	49	lastaddr = -1;
	50	iPPFNum = 0;
	51
	52	while (p != NULL) {
	53	if (p->addr != lastaddr) iPPFNum++;
	54	lastaddr = p->addr;
	55	p = p->pNext;
	56	}
	57
	58	if (iPPFNum <= 0) return;
	59
	60	pc = ppfCache = (PPF_CACHE )malloc(iPPFNum sizeof(PPF_CACHE));
	61
	62	iPPFNum--;
	63	p = ppfHead;
	64	lastaddr = -1;
65
66	while (p != NULL) {
67	if (p->addr != lastaddr) {
68	pc->addr = p->addr;
69	pc->pNext = p;
70	pc++;
71	}
72	lastaddr = p->addr;
73	p = p->pNext;
74	}
75	}
76
77	void FreePPFCache() {
78	PPF_DATA *p = ppfHead;
79	void *pn;
80
81	while (p != NULL) {
82	pn = p->pNext;
83	free(p);
84	p = (PPF_DATA *)pn;
85	}
86	ppfHead = NULL;
87	ppfLast = NULL;
88
89	if (ppfCache != NULL) free(ppfCache);
90	ppfCache = NULL;
91	}
92
93	void CheckPPFCache(unsigned char *pB, unsigned char m, unsigned char s, unsigned char f) {
94	PPF_CACHE pcstart, pcend, *pcpos;
95	int addr = MSF2SECT(btoi(m), btoi(s), btoi(f)), pos, anz, start;
96
97	if (ppfCache == NULL) return;
98
99	pcstart = ppfCache;
100	if (addr < pcstart->addr) return;
101	pcend = ppfCache + iPPFNum;
102	if (addr > pcend->addr) return;
103
104	while (1) {
105	if (addr == pcend->addr) { pcpos = pcend; break; }
106
107	pcpos = pcstart + (pcend - pcstart) / 2;
108	if (pcpos == pcstart) break;
109	if (addr < pcpos->addr) {
110	pcend = pcpos;
111	continue;
112	}
113	if (addr > pcpos->addr) {
114	pcstart = pcpos;
115	continue;
116	}
117	break;
118	}
119
120	if (addr == pcpos->addr) {
121	PPF_DATA *p = pcpos->pNext;
122	while (p != NULL && p->addr == addr) {
123	pos = p->pos - (CD_FRAMESIZE_RAW - DATA_SIZE);
124	anz = p->anz;
125	if (pos < 0) { start = -pos; pos = 0; anz -= start; }
126	else start = 0;
127	memcpy(pB + pos, (unsigned char *)(p + 1) + start, anz);
128	p = p->pNext;
129	}
130	}
131	}
132
133	static void AddToPPF(s32 ladr, s32 pos, s32 anz, unsigned char *ppfmem) {
134	if (ppfHead == NULL) {
135	ppfHead = (PPF_DATA *)malloc(sizeof(PPF_DATA) + anz);
136	ppfHead->addr = ladr;
137	ppfHead->pNext = NULL;
138	ppfHead->pos = pos;
139	ppfHead->anz = anz;
140	memcpy(ppfHead + 1, ppfmem, anz);
141	iPPFNum = 1;
142	ppfLast = ppfHead;
143	} else {
144	PPF_DATA *p = ppfHead;
145	PPF_DATA *plast = NULL;
146	PPF_DATA *padd;
147
148	if (ladr > ppfLast->addr \|\| (ladr == ppfLast->addr && pos > ppfLast->pos)) {
149	p = NULL;
150	plast = ppfLast;
151	} else {
152	while (p != NULL) {
153	if (ladr < p->addr) break;
154	if (ladr == p->addr) {
155	while (p && ladr == p->addr && pos > p->pos) {
156	plast = p;
157	p = p->pNext;
158	}
159	break;
160	}
161	plast = p;
162	p = p->pNext;
163	}
164	}
165
166	padd = (PPF_DATA *)malloc(sizeof(PPF_DATA) + anz);
167	padd->addr = ladr;
168	padd->pNext = p;
169	padd->pos = pos;
170	padd->anz = anz;
171	memcpy(padd + 1, ppfmem, anz);
172	iPPFNum++;
173	if (plast == NULL) ppfHead = padd;
174	else plast->pNext = padd;
175
176	if (padd->pNext == NULL) ppfLast = padd;
177	}
178	}
179
180	void BuildPPFCache() {
181	FILE *ppffile;
182	char buffer[12];
183	char method, undo = 0, blockcheck = 0;
184	int dizlen, dizyn;
185	unsigned char ppfmem[512];
7a8d521f	186	char szPPF[MAXPATHLEN * 2];
ef79bbde P	187	int count, seekpos, pos;
	188	u32 anz; // use 32-bit to avoid stupid overflows
	189	s32 ladr, off, anx;
	190
	191	FreePPFCache();
	192
4e44d6f6	193	if (CdromId[0] == '\0') return;
4e44d6f6	194
ef79bbde P	195	// Generate filename in the format of SLUS_123.45
	196	buffer[0] = toupper(CdromId[0]);
	197	buffer[1] = toupper(CdromId[1]);
	198	buffer[2] = toupper(CdromId[2]);
	199	buffer[3] = toupper(CdromId[3]);
	200	buffer[4] = '_';
	201	buffer[5] = CdromId[4];
	202	buffer[6] = CdromId[5];
	203	buffer[7] = CdromId[6];
	204	buffer[8] = '.';
	205	buffer[9] = CdromId[7];
	206	buffer[10] = CdromId[8];
	207	buffer[11] = '\0';
	208
	209	sprintf(szPPF, "%s%s", Config.PatchesDir, buffer);
	210
	211	ppffile = fopen(szPPF, "rb");
	212	if (ppffile == NULL) return;
	213
	214	memset(buffer, 0, 5);
7a8d521f	215	if (fread(buffer, 1, 3, ppffile) != 3)
7a8d521f	216	goto fail_io;
ef79bbde P	217
	218	if (strcmp(buffer, "PPF") != 0) {
	219	SysPrintf(_("Invalid PPF patch: %s.\n"), szPPF);
	220	fclose(ppffile);
	221	return;
	222	}
	223
	224	fseek(ppffile, 5, SEEK_SET);
	225	method = fgetc(ppffile);
	226
	227	switch (method) {
	228	case 0: // ppf1
	229	fseek(ppffile, 0, SEEK_END);
	230	count = ftell(ppffile);
	231	count -= 56;
	232	seekpos = 56;
	233	break;
	234
	235	case 1: // ppf2
	236	fseek(ppffile, -8, SEEK_END);
	237
	238	memset(buffer, 0, 5);
7a8d521f	239	if (fread(buffer, 1, 4, ppffile) != 4)
7a8d521f	240	goto fail_io;
ef79bbde P	241
	242	if (strcmp(".DIZ", buffer) != 0) {
	243	dizyn = 0;
	244	} else {
7a8d521f	245	if (fread(&dizlen, 1, 4, ppffile) != 4)
7a8d521f	246	goto fail_io;
ef79bbde P	247	dizlen = SWAP32(dizlen);
	248	dizyn = 1;
	249	}
	250
	251	fseek(ppffile, 0, SEEK_END);
	252	count = ftell(ppffile);
	253
	254	if (dizyn == 0) {
	255	count -= 1084;
	256	seekpos = 1084;
	257	} else {
	258	count -= 1084;
	259	count -= 38;
	260	count -= dizlen;
	261	seekpos = 1084;
	262	}
	263	break;
	264
	265	case 2: // ppf3
	266	fseek(ppffile, 57, SEEK_SET);
	267	blockcheck = fgetc(ppffile);
	268	undo = fgetc(ppffile);
	269
	270	fseek(ppffile, -6, SEEK_END);
	271	memset(buffer, 0, 5);
7a8d521f	272	if (fread(buffer, 1, 4, ppffile) != 4)
7a8d521f	273	goto fail_io;
ef79bbde P	274	dizlen = 0;
	275
	276	if (strcmp(".DIZ", buffer) == 0) {
	277	fseek(ppffile, -2, SEEK_END);
7a8d521f	278	// TODO: Endian/size unsafe?
	279	if (fread(&dizlen, 1, 2, ppffile) != 2)
	280	goto fail_io;
ef79bbde P	281	dizlen = SWAP32(dizlen);
	282	dizlen += 36;
	283	}
	284
	285	fseek(ppffile, 0, SEEK_END);
	286	count = ftell(ppffile);
	287	count -= dizlen;
	288
	289	if (blockcheck) {
	290	seekpos = 1084;
	291	count -= 1084;
	292	} else {
	293	seekpos = 60;
	294	count -= 60;
	295	}
	296	break;
	297
	298	default:
	299	fclose(ppffile);
	300	SysPrintf(_("Unsupported PPF version (%d).\n"), method + 1);
	301	return;
	302	}
	303
	304	// now do the data reading
	305	do {
	306	fseek(ppffile, seekpos, SEEK_SET);
7a8d521f	307	if (fread(&pos, 1, sizeof(pos), ppffile) != sizeof(pos))
7a8d521f	308	goto fail_io;
ef79bbde P	309	pos = SWAP32(pos);
ef79bbde P	310
7a8d521f	311	if (method == 2) {
	312	// skip 4 bytes on ppf3 (no int64 support here)
	313	if (fread(buffer, 1, 4, ppffile) != 4)
	314	goto fail_io;
	315	}
ef79bbde P	316
ef79bbde P	317	anz = fgetc(ppffile);
7a8d521f	318	if (fread(ppfmem, 1, anz, ppffile) != anz)
7a8d521f	319	goto fail_io;
ef79bbde P	320
	321	ladr = pos / CD_FRAMESIZE_RAW;
	322	off = pos % CD_FRAMESIZE_RAW;
	323
	324	if (off + anz > CD_FRAMESIZE_RAW) {
	325	anx = off + anz - CD_FRAMESIZE_RAW;
	326	anz -= (unsigned char)anx;
	327	AddToPPF(ladr + 1, 0, anx, &ppfmem[anz]);
	328	}
	329
	330	AddToPPF(ladr, off, anz, ppfmem); // add to link list
	331
	332	if (method == 2) {
	333	if (undo) anz += anz;
	334	anz += 4;
	335	}
	336
	337	seekpos = seekpos + 5 + anz;
	338	count = count - 5 - anz;
	339	} while (count != 0); // loop til end
	340
	341	fclose(ppffile);
	342
	343	FillPPFCache(); // build address array
	344
	345	SysPrintf(_("Loaded PPF %d.0 patch: %s.\n"), method + 1, szPPF);
7a8d521f	346
	347	fail_io:
	348	#ifndef NDEBUG
	349	SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
	350	#endif
	351	fclose(ppffile);
ef79bbde	352	}
ae4e7dc9	353
	354	// redump.org SBI files, slightly different handling from PCSX-Reloaded
	355	unsigned char *sbi_sectors;
	356
	357	int LoadSBI(const char *fname, int sector_count) {
4904809d	358	int good_sectors = 0;
4904809d	359	int clean_eof = 0;
ab948f7e	360	char buffer[16];
ae4e7dc9	361	FILE *sbihandle;
eaa895dc	362	u8 sbitime[3], t;
ae4e7dc9	363	int s;
	364
	365	sbihandle = fopen(fname, "rb");
	366	if (sbihandle == NULL)
	367	return -1;
	368
ae4e7dc9	369	sbi_sectors = calloc(1, sector_count / 8);
4904809d	370	if (sbi_sectors == NULL)
4904809d	371	goto end;
ae4e7dc9	372
ae4e7dc9	373	// 4-byte SBI header
7a8d521f	374	if (fread(buffer, 1, 4, sbihandle) != 4)
4904809d	375	goto end;
7a8d521f	376
eaa895dc	377	while (1) {
	378	s = fread(sbitime, 1, 3, sbihandle);
	379	if (s != 3)
4904809d	380	{
	381	if (s == 0)
	382	clean_eof = 1;
	383	break;
	384	}
	385	s = MSF2SECT(btoi(sbitime[0]), btoi(sbitime[1]), btoi(sbitime[2]));
	386	if (s < sector_count) {
	387	sbi_sectors[s >> 3] \|= 1 << (s&7);
	388	good_sectors++;
	389	}
	390	else
	391	SysPrintf(_("SBI sector %d >= %d?\n"), s, sector_count);
	392
	393	// skip to the next record
7a8d521f	394	if (fread(&t, 1, sizeof(t), sbihandle) != sizeof(t))
4904809d	395	break;
4904809d	396	s = -1;
eaa895dc	397	switch (t) {
	398	default:
	399	case 1:
	400	s = 10;
	401	break;
	402	case 2:
	403	case 3:
	404	s = 3;
	405	break;
	406	}
4904809d	407	if (s < 0)
	408	break;
	409	if (fseek(sbihandle, s, SEEK_CUR))
	410	break;
ae4e7dc9	411	}
	412
	413	fclose(sbihandle);
ae4e7dc9	414	return 0;
7a8d521f	415
4904809d	416	end:
	417	if (!clean_eof)
	418	SysPrintf(_("SBI: parse failure at 0x%lx\n"), ftell(sbihandle));
	419	if (!good_sectors) {
	420	free(sbi_sectors);
	421	sbi_sectors = NULL;
	422	}
7a8d521f	423	fclose(sbihandle);
4904809d	424	return sbi_sectors ? 0 : -1;
ae4e7dc9	425	}
	426
	427	void UnloadSBI(void) {
	428	if (sbi_sectors) {
	429	free(sbi_sectors);
	430	sbi_sectors = NULL;
	431	}
	432	}