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#ifndef GTF_H
#define GTF_H
#include <vbe.h>
#define GTF_VF 0
#define GTF_HF 1
#define GTF_PF 2
typedef struct {
double Vsync_need; /* Number of lines for vert sync (default 3) */
double min_Vsync_BP; /* Minimum vertical sync + back porch (us) (default 550)*/
double min_front_porch; /* Minimum front porch in lines (default 1) */
double char_cell_granularity; /* Character cell granularity in pixels (default 8) */
double margin_width; /* Top/ bottom MARGIN size as % of height (%) (default 1.8) */
double sync_width; /* Sync width percent of line period ( default 8) */
double c; /* Blanking formula offset (default 40)*/
double j; /* Blanking formula scaling factor weight (default 20)*/
double k; /* Blanking formula scaling factor (default 128)*/
double m; /* Blanking formula gradient (default 600)*/
} GTF_constants;
//#ifndef __VESA_VBELIB_INCLUDED__
// struct VesaCRTCInfoBlock {
// unsigned short hTotal; /* Horizontal total in pixels */
// unsigned short hSyncStart; /* Horizontal sync start in pixels */
// unsigned short hSyncEnd; /* Horizontal sync end in pixels */
// unsigned short vTotal; /* Vertical total in lines */
// unsigned short vSyncStart; /* Vertical sync start in lines */
// unsigned short vSyncEnd; /* Vertical sync end in lines */
// unsigned char Flags; /* Flags (Interlaced, Double Scan etc) */
// unsigned long PixelClock; /* Pixel clock in units of Hz */
// unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
// unsigned char Reserved[40];/* remainder of CRTCInfoBlock*/
//}__attribute__ ((packed));
//#define VESA_CRTC_DOUBLESCAN 0x01
//#define VESA_CRTC_INTERLACED 0x02
//#define VESA_CRTC_HSYNC_NEG 0x04
//#define VESA_CRTC_VSYNC_NEG 0x08
//#endif
void GTF_calcTimings(double X,double Y,double freq, int type,
int want_margins, int want_interlace,struct VesaCRTCInfoBlock *result);
#endif /* GTF_H */
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