6502/6502_linux_logo
1
0
Fork 0
mirror of https://github.com/Michaelangel007/6502_linux_logo.git synced 2024-11-28 19:49:47 +00:00
Code Issues Projects Releases Wiki Activity

Add option to output packed or hgr bits

Browse Source
This commit is contained in:
Michaelangel007 2017-07-16 09:27:36 -07:00
parent da234569c9
commit 839c0931bc
1 changed files with 25 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
ascii2hgr2bit.c
View File

@ -18,6 +18,7 @@ Michaelangel007
https://github.com/deater/linux_logo/blob/master/logos/banner.logo https://github.com/deater/linux_logo/blob/master/logos/banner.logo
*/ */
int gbOutputHgr = 0;
unsigned char gaLogoBits[ 280 / 2 * 192 / 8 ]; // packed bits unsigned char gaLogoBits[ 280 / 2 * 192 / 8 ]; // packed bits
const char* gaLogo70 = const char* gaLogo70 =
@ -41,7 +42,7 @@ Bitpacked 2-bits/2 pixels
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17.5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17.5
<--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><--> <--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><--><-->
*/ */
#if 0 #if 1
"__________________________________________________________@@@@@_______" "__________________________________________________________@@@@@_______"
"_________________________________________________________@@@@@@@______" "_________________________________________________________@@@@@@@______"
"______________A__________________________________________@@_@_@@______" "______________A__________________________________________@@_@_@@______"
@ -55,16 +56,26 @@ Bitpacked 2-bits/2 pixels
"__@@____@@_AA@_@_@@_____@@__@@@___@@@____@@___@@___BBBBBB@_____@BBBBBB" "__@@____@@_AA@_@_@@_____@@__@@@___@@@____@@___@@___BBBBBB@_____@BBBBBB"
"@@@@@@@@@@__@@@_@@@@___@@@@___@@@@_@@@_@@@@@_@@@@@__BBBBB@@@@@@@BBBBB_" "@@@@@@@@@@__@@@_@@@@___@@@@___@@@@_@@@_@@@@@_@@@@@__BBBBB@@@@@@@BBBBB_"
#else #else
"@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-@-" // _@_@_@_@_@_@_@ = PACK: $33,$33,$33,$33 -> HGR: $33,$66,$4C,$19 (MSB=0)
// = HGR: $B3,$E6,$CC,$99 (MSB=1)
//"_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@"
// @_@_@_@_@_@_@_ = HGR: $4C,$19,$33,$66 (MSB=0)
// = PACK: $CC,$CC,$CC,$CC -> HGR: $CC,$99,$B3,$E6 (MSB=1)
//"@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_@_"
#endif #endif
; ;
int main( const int nArg, const char *aArg[] ) int main( const int nArg, const char *aArg[] )
{ {
(void) aArg;
if( nArg > 1 )
gbOutputHgr = 1;
const char *src = gaLogo70; const char *src = gaLogo70;
unsigned char *dst = gaLogoBits; unsigned char *dst = gaLogoBits;
unsigned char bit = 0; unsigned int bit = 0;
unsigned char shl = 0; unsigned char shl = 0;
unsigned int len = 0; unsigned int len = 0;
unsigned int i; unsigned int i;
@ -74,13 +85,22 @@ int main( const int nArg, const char *aArg[] )
bit |= (*src & 3) << shl; bit |= (*src & 3) << shl;
shl += 2; shl += 2;
if( gbOutputHgr )
{
if( shl >= 8 )
{
shl -= 7 ;
*dst++= (0x80 | bit);
bit >>= 7;
}
} else {
if( shl >= 8 ) if( shl >= 8 )
{ {
shl -= 8 ; shl -= 8 ;
*dst++ = bit; *dst++= bit;
bit = 0; bit = 0;
} }
}
src++; src++;
} }