void CloseFile( void ) {
if ( handle ) {
ClearBuf();
/* Endianize the header and write it to beginning of the file */
var_write( &header.versionHigh, header.versionHigh );
var_write( &header.versionLow, header.versionLow );
var_write( &header.commands, header.commands );
var_write( &header.milliseconds, header.milliseconds );
fseek( handle, 0, SEEK_SET );
fwrite( &header, 1, sizeof( header ), handle );
fclose( handle );
handle = 0;
}
}
Bit8u VESA_GetSVGAModeInformation(Bit16u mode,Bit16u seg,Bit16u off) {
MODE_INFO minfo;
memset(&minfo,0,sizeof(minfo));
PhysPt buf=PhysMake(seg,off);
Bitu pageSize;
Bit8u modeAttributes;
Bitu i=0;
mode&=0x3fff; // vbe2 compatible, ignore lfb and keep screen content bits
if (mode<0x100) return 0x01;
if (svga.accepts_mode) {
if (!svga.accepts_mode(mode)) return 0x01;
}
while (ModeList_VGA[i].mode!=0xffff) {
if (mode==ModeList_VGA[i].mode) goto foundit; else i++;
}
return VESA_FAIL;
foundit:
if ((int10.vesa_oldvbe) && (ModeList_VGA[i].mode>=0x120)) return 0x01;
VideoModeBlock * mblock=&ModeList_VGA[i];
switch (mblock->type) {
case M_LIN4:
pageSize = mblock->sheight * mblock->swidth/2;
var_write(&minfo.BytesPerScanLine,mblock->swidth/8);
var_write(&minfo.NumberOfPlanes,0x4);
var_write(&minfo.BitsPerPixel,4);
var_write(&minfo.MemoryModel,3); //ega planar mode
modeAttributes = 0x1b; // Color, graphics, no linear buffer
break;
case M_LIN8:
pageSize = mblock->sheight * mblock->swidth;
var_write(&minfo.BytesPerScanLine,mblock->swidth);
var_write(&minfo.NumberOfPlanes,0x1);
var_write(&minfo.BitsPerPixel,8);
var_write(&minfo.MemoryModel,4); //packed pixel
modeAttributes = 0x1b; // Color, graphics
if (!int10.vesa_nolfb) modeAttributes |= 0x80; // linear framebuffer
break;
case M_LIN15:
pageSize = mblock->sheight * mblock->swidth*2;
var_write(&minfo.BytesPerScanLine,mblock->swidth*2);
var_write(&minfo.NumberOfPlanes,0x1);
var_write(&minfo.BitsPerPixel,15);
var_write(&minfo.MemoryModel,6); //HiColour
var_write(&minfo.RedMaskSize,5);
var_write(&minfo.RedMaskPos,10);
var_write(&minfo.GreenMaskSize,5);
var_write(&minfo.GreenMaskPos,5);
var_write(&minfo.BlueMaskSize,5);
var_write(&minfo.BlueMaskPos,0);
var_write(&minfo.ReservedMaskSize,0x01);
var_write(&minfo.ReservedMaskPos,0x0f);
modeAttributes = 0x1b; // Color, graphics
if (!int10.vesa_nolfb) modeAttributes |= 0x80; // linear framebuffer
break;
case M_LIN16:
pageSize = mblock->sheight * mblock->swidth*2;
var_write(&minfo.BytesPerScanLine,mblock->swidth*2);
var_write(&minfo.NumberOfPlanes,0x1);
var_write(&minfo.BitsPerPixel,16);
var_write(&minfo.MemoryModel,6); //HiColour
var_write(&minfo.RedMaskSize,5);
var_write(&minfo.RedMaskPos,11);
var_write(&minfo.GreenMaskSize,6);
var_write(&minfo.GreenMaskPos,5);
var_write(&minfo.BlueMaskSize,5);
var_write(&minfo.BlueMaskPos,0);
modeAttributes = 0x1b; // Color, graphics
if (!int10.vesa_nolfb) modeAttributes |= 0x80; // linear framebuffer
break;
case M_LIN32:
pageSize = mblock->sheight * mblock->swidth*4;
var_write(&minfo.BytesPerScanLine,mblock->swidth*4);
var_write(&minfo.NumberOfPlanes,0x1);
var_write(&minfo.BitsPerPixel,32);
var_write(&minfo.MemoryModel,6); //HiColour
var_write(&minfo.RedMaskSize,8);
var_write(&minfo.RedMaskPos,0x10);
var_write(&minfo.GreenMaskSize,0x8);
var_write(&minfo.GreenMaskPos,0x8);
var_write(&minfo.BlueMaskSize,0x8);
var_write(&minfo.BlueMaskPos,0x0);
var_write(&minfo.ReservedMaskSize,0x8);
var_write(&minfo.ReservedMaskPos,0x18);
modeAttributes = 0x1b; // Color, graphics
if (!int10.vesa_nolfb) modeAttributes |= 0x80; // linear framebuffer
break;
case M_TEXT:
pageSize = 0;
var_write(&minfo.BytesPerScanLine, mblock->twidth * 2);
var_write(&minfo.NumberOfPlanes,0x4);
var_write(&minfo.BitsPerPixel,4);
var_write(&minfo.MemoryModel,0); // text
modeAttributes = 0x0f; //Color, text, bios output
break;
default:
return VESA_FAIL;
}
if (pageSize & 0xFFFF) {
// It is documented that many applications assume 64k-aligned page sizes
// VBETEST is one of them
pageSize += 0x10000;
pageSize &= ~0xFFFF;
}
Bitu pages = 0;
if (pageSize > vga.vmemsize) {
// mode not supported by current hardware configuration
modeAttributes &= ~0x1;
} else if (pageSize) {
pages = (vga.vmemsize / pageSize)-1;
}
var_write(&minfo.NumberOfImagePages, pages);
var_write(&minfo.ModeAttributes, modeAttributes);
var_write(&minfo.WinAAttributes, 0x7); // Exists/readable/writable
if (mblock->type==M_TEXT) {
var_write(&minfo.WinGranularity,32);
var_write(&minfo.WinSize,32);
var_write(&minfo.WinASegment,0xb800);
var_write(&minfo.XResolution,mblock->twidth);
var_write(&minfo.YResolution,mblock->theight);
} else {
var_write(&minfo.WinGranularity,64);
var_write(&minfo.WinSize,64);
var_write(&minfo.WinASegment,0xa000);
var_write(&minfo.XResolution,mblock->swidth);
var_write(&minfo.YResolution,mblock->sheight);
}
var_write(&minfo.WinFuncPtr,CALLBACK_RealPointer(callback.setwindow));
var_write(&minfo.NumberOfBanks,0x1);
var_write(&minfo.Reserved_page,0x1);
var_write(&minfo.XCharSize,mblock->cwidth);
var_write(&minfo.YCharSize,mblock->cheight);
if (!int10.vesa_nolfb) var_write(&minfo.PhysBasePtr,S3_LFB_BASE);
MEM_BlockWrite(buf,&minfo,sizeof(MODE_INFO));
return VESA_SUCCESS;
}
