devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

1bit and 2bit LCD drivers: Low-level bit handling optimisations.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10225 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-07-18 00:04:43 +00:00
parent ed00b17305
commit 393f31cc43
5 changed files with 76 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

10
apps/plugins/lib/playergfx.c
View file

@ -152,7 +152,10 @@ static void fgblock(unsigned char *address, unsigned mask, unsigned bits)
static void solidblock(unsigned char *address, unsigned mask, unsigned bits)
{
*address = (*address & ~mask) | (bits & mask);
unsigned data = *(char *)address;
bits ^= data;
*address = data ^ (bits & mask);
}
static void flipinvblock(unsigned char *address, unsigned mask, unsigned bits)
@ -172,7 +175,10 @@ static void fginvblock(unsigned char *address, unsigned mask, unsigned bits)
static void solidinvblock(unsigned char *address, unsigned mask, unsigned bits)
{
*address = (*address & ~mask) | (~bits & mask);
unsigned data = *(char *)address;
bits = ~bits ^ data;
*address = data ^ (bits & mask);
}
lcd_blockfunc_type* pgfx_blockfuncs[8] = {