Created
May 15, 2021 19:32
-
-
Save Sembiance/2ee395b8d3ebf5e6bfce12918c6aceb4 to your computer and use it in GitHub Desktop.
kygFormat image parsing code
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
--- Kyss presents --- | |
kygload.c : Kyss graphics format loader | |
Last update : 1992-02-28 version 0.10 | |
for "TOWNS-GCC" | |
*/ | |
extern char egbwork[]; | |
struct /* KYG format header ver.0.10 (128bytes) */ | |
{ char id[ 20 ]; | |
char message[ 80 ]; | |
unsigned char eom; | |
unsigned char padding; | |
unsigned short xSize, ySize; | |
unsigned short xPosition, yPosition; | |
unsigned long size; /* ���k��̃f�[�^�o�C�g���B�w�b�_�͊܂܂Ȃ���� */ | |
unsigned short type; /* ���k�^�C�v�B0 �͖����k�A�ʏ�� 1 | |
�͂����� 2 �ȏオ�g������́E�E�E���Ȃ��� */ | |
unsigned short color; /* �F���B���Ԃ� 32768 �����g����Ǝv�����ǂ� */ | |
char reserve[ 10 ]; | |
} KYGheader; | |
int KYGload( char *fn, int mode, int page ) | |
{ | |
int i; | |
int x, y; | |
int x1, y1; | |
int dp; | |
unsigned short base; | |
unsigned char count; | |
unsigned char rd; | |
unsigned char nrn; | |
unsigned long dataSize; | |
unsigned char *iHeap; | |
unsigned short *oHeap; | |
FILE *ifp; | |
static int dps[] = { 0, 5, 2, 7, 4, 9, 1, 6, 3, 8 }; | |
if( ( ifp = fopen( fn, "rb" ) ) == NULL ) | |
return( ERR ); | |
fread( &KYGheader, sizeof KYGheader, 1, ifp ); | |
if( strncmp( KYGheader.id, "KYGformat", 9 ) != 0 ) | |
{ | |
printf( "not KYG format\n" ); | |
return( ERR ); | |
} | |
dataSize = KYGheader.xSize * KYGheader.ySize * 2; | |
if( ( oHeap = ( unsigned short * )( malloc( dataSize ) ) ) == NULL ) | |
return( ERR ); | |
if( ( iHeap = ( unsigned char * )( malloc( KYGheader.size ) ) ) == NULL ) | |
return( ERR ); | |
fread( iHeap, 1, KYGheader.size, ifp ); | |
fclose( ifp ); | |
for( i = dp = nrn = 0; /* dp < dataSize */ i < dataSize / 2; ) | |
{ | |
if( ( rd = *( iHeap + dp ) & 0x0F ) == 0 || nrn > 0 ) | |
{ | |
if( nrn == 0 ) | |
nrn = ( *( iHeap + dp++ ) >> 4 ) - 1; | |
else | |
--nrn; | |
base = *( unsigned short * )( iHeap + dp ); | |
dp += 2; | |
count = ( ( base & 0x8000 ) != 0 ) ? 1 : *( iHeap + dp++ ); | |
base &= 0x7FFF; | |
} | |
else | |
{ | |
nrn = *( iHeap + dp++ ) >> 4; | |
count = ( ( rd & 0x08 ) != 0 ) ? 1 : *( iHeap + dp++ ); | |
base = *( oHeap + i - KYGheader.xSize - 4 + ( rd & 0x07 ) ); | |
} | |
for( ; count > 0; --count, ++i ) | |
*( oHeap + i ) = base; | |
} | |
if( mode == 0 ) | |
{ | |
EGB_writePage( egbwork, page ); | |
EGB_putRect( egbwork, 0, oHeap, KYGheader.xPosition, KYGheader.yPosition, KYGheader.xPosition + KYGheader.xSize - 1, KYGheader.yPosition + KYGheader.ySize - 1 ); | |
} | |
else | |
{ | |
for( y1 = 0; y1 < 10; ++y1 ) | |
{ | |
for( x1 = 0; x1 < 10; ++x1 ) | |
{ | |
for( y = 0; y < 240; y += 10 ) | |
{ | |
for( x = 0; x < 320; x += 10 ) | |
{ | |
VRAM_putPixelW( ( x + dps[ x1 ] ) * 2 + ( y + dps[ y1 ] ) * 1024 + 0x40000 * page, *( oHeap + x + dps[ x1 ] + ( y + dps[ y1 ] ) * 320 ) ); | |
} | |
} | |
} | |
} | |
/* EGB_writePage( egbwork, page ); | |
EGB_writeMode( egbwork, PASTEL ); | |
for( i = 1; i <= 256; i += 5 ) | |
{ | |
EGB_pastel( egbwork, i ); | |
EGB_putRect( egbwork, 0, oHeap, KYGheader.xPosition, KYGheader.yPosition, KYGheader.xPosition + KYGheader.xSize - 1, KYGheader.yPosition + KYGheader.ySize - 1 ); | |
} | |
EGB_writeMode( egbwork, PSET ); | |
*/ | |
} | |
free( iHeap ); | |
free( oHeap ); | |
return( 0 ); | |
} | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment