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load/savestate support added to the menu, contributed by pabs

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6129 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michiel Van Der Kolk 2005-03-04 09:30:27 +00:00
parent db44b294f4
commit 254100adf4
3 changed files with 243 additions and 44 deletions
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24
apps/plugins/rockboy/save.c
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@ -169,9 +169,12 @@ void loadstate(int fd)
int irl = hw.cgb ? 8 : 2;
int vrl = hw.cgb ? 4 : 2;
int srl = mbc.ramsize << 1;
size_t base_offset;
ver = hramofs = hiofs = palofs = oamofs = wavofs = 0;
base_offset = lseek(fd, 0, SEEK_CUR);
read(fd,buf, 4096);
for (j = 0; header[j][0]; j++)
@ -207,14 +210,18 @@ void loadstate(int fd)
if (wavofs) memcpy(snd.wave, buf+wavofs, sizeof snd.wave);
else memcpy(snd.wave, ram.hi+0x30, 16); /* patch data from older files */
lseek(fd, iramblock<<12, SEEK_SET);
lseek(fd, base_offset + (iramblock << 12), SEEK_SET);
read(fd,ram.ibank, 4096*irl);
lseek(fd, vramblock<<12, SEEK_SET);
lseek(fd, base_offset + (vramblock << 12), SEEK_SET);
read(fd,lcd.vbank, 4096*vrl);
lseek(fd, sramblock<<12, SEEK_SET);
lseek(fd, base_offset + (sramblock << 12), SEEK_SET);
read(fd,ram.sbank, 4096*srl);
vram_dirty();
pal_dirty();
sound_dirty();
mem_updatemap();
}
void savestate(int fd)
@ -226,6 +233,7 @@ void savestate(int fd)
int irl = hw.cgb ? 8 : 2;
int vrl = hw.cgb ? 4 : 2;
int srl = mbc.ramsize << 1;
size_t base_offset;
ver = 0x105;
iramblock = 1;
@ -261,16 +269,18 @@ void savestate(int fd)
memcpy(buf+oamofs, lcd.oam.mem, sizeof lcd.oam);
memcpy(buf+wavofs, snd.wave, sizeof snd.wave);
lseek(fd, 0, SEEK_SET);
/* calculate base offset for output file */
/* (we'll seek relative to that from now on) */
base_offset = lseek(fd, 0, SEEK_CUR);
write(fd,buf, 4096);
lseek(fd, iramblock<<12, SEEK_SET);
lseek(fd, base_offset + (iramblock << 12), SEEK_SET);
write(fd,ram.ibank, 4096*irl);
lseek(fd, vramblock<<12, SEEK_SET);
lseek(fd, base_offset + (vramblock << 12), SEEK_SET);
write(fd,lcd.vbank, 4096*vrl);
lseek(fd, sramblock<<12, SEEK_SET);
lseek(fd, base_offset + (sramblock << 12), SEEK_SET);
write(fd,ram.sbank, 4096*srl);
}