gpsp/savestate.h

105 lines
3.9 KiB
C

/* gameplaySP
*
* Copyright (C) 2023 David Guillen Fandos <david@davidgf.net>
*
* 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 02110-1301 USA
*/
#ifndef SAVESTATE_H
#define SAVESTATE_H
#define BSON_TYPE_STR 0x02
#define BSON_TYPE_DOC 0x03
#define BSON_TYPE_ARR 0x04
#define BSON_TYPE_BIN 0x05
#define BSON_TYPE_INT32 0x10
#define bson_write_u32(p, value) \
{ \
u32 __tval = (value); \
*p++ = (u8)((__tval)); \
*p++ = (u8)((__tval) >> 8); \
*p++ = (u8)((__tval) >> 16); \
*p++ = (u8)((__tval) >> 24); \
}
#define bson_read_u32(p) \
((p[3] << 24) | (p[2] << 16) | \
(p[1] << 8) | (p[0] << 0))
#define bson_write_cstring(p, value) \
memcpy(p, value, strlen(value)+1); \
p += strlen(value)+1;
#define bson_write_int32(p, key, value) \
*p++ = 0x10; \
bson_write_cstring(p, key); \
bson_write_u32(p, value);
#define bson_write_int32array(p, key, arr, cnt) \
{ \
u32 _n; \
u32 *arrptr = (u32*)(arr); \
*p++ = 0x4; \
bson_write_cstring(p, key); \
bson_write_u32(p, 5 + (cnt) * 8); \
for (_n = 0; _n < (cnt); _n++) { \
char ak[3] = { \
(char)('0' + (_n/10)), \
(char)('0' + (_n%10)), \
0 }; \
bson_write_int32(p, ak, arrptr[_n]); \
} \
*p++ = 0; \
}
#define bson_write_bytes(p, key, value, vlen) \
*p++ = 0x05; \
bson_write_cstring(p, key); \
bson_write_u32(p, vlen); \
*p++ = 0; \
memcpy(p, value, vlen); \
p += vlen;
#define bson_start_document(p, key, hdrptr) \
*p++ = 0x03; \
bson_write_cstring(p, key); \
hdrptr = p; \
bson_write_u32(p, 0);
#define bson_finish_document(p, hdrptr) \
{ \
u32 _sz = p - hdrptr + 1; \
*p++ = 0; \
bson_write_u32(hdrptr, _sz); \
}
bool bson_contains_key(const u8 *srcp, const char *key, u8 keytype);
const u8* bson_find_key(const u8 *srcp, const char *key);
bool bson_read_int32(const u8 *srcp, const char *key, u32* value);
bool bson_read_int32_array(const u8 *srcp, const char *key, u32* value, unsigned cnt);
bool bson_read_bytes(const u8 *srcp, const char *key, void* buffer, unsigned cnt);
/* this is an upper limit, leave room for future (?) stuff */
#define GBA_STATE_MEM_SIZE (416*1024)
#define GBA_STATE_MAGIC 0x06BAC0DE
#define GBA_STATE_VERSION 0x00010004
bool gba_load_state(const void *src);
void gba_save_state(void *dst);
#endif