libvo/gtf.h

   1 #ifndef GTF_H
   2 #define GTF_H
   3
   4 #include <vbe.h>
   5
   6 #define GTF_VF 0
   7 #define GTF_HF 1
   8 #define GTF_PF 2
   9
  10
  11 typedef struct {
  12     double      Vsync_need;        /* Number of lines for vert sync (default 3) */
  13     double      min_Vsync_BP;      /* Minimum vertical sync + back porch (us) (default 550)*/
  14     double      min_front_porch;   /* Minimum front porch in lines (default 1)  */
  15     double      char_cell_granularity;  /* Character cell granularity in pixels (default 8) */
  16     double      margin_width;      /* Top/ bottom MARGIN size as % of height (%) (default 1.8) */
  17     double      sync_width;       /* Sync width percent of line period ( default 8) */
  18     double  c;          /* Blanking formula offset (default 40)*/
  19     double  j;          /* Blanking formula scaling factor weight (default 20)*/
  20     double  k;          /* Blanking formula scaling factor (default 128)*/
  21     double  m;          /* Blanking formula gradient (default 600)*/
  22     } GTF_constants;
  23
  24 //#ifndef __VESA_VBELIB_INCLUDED__
  25 //    struct VesaCRTCInfoBlock {
  26 //    unsigned short hTotal;     /* Horizontal total in pixels */
  27 //    unsigned short hSyncStart; /* Horizontal sync start in pixels */
  28 //    unsigned short hSyncEnd;   /* Horizontal sync end in pixels */
  29 //    unsigned short vTotal;     /* Vertical total in lines */
  30 //    unsigned short vSyncStart; /* Vertical sync start in lines */
  31 //    unsigned short vSyncEnd;   /* Vertical sync end in lines */
  32 //    unsigned char  Flags;      /* Flags (Interlaced, Double Scan etc) */
  33 //    unsigned long  PixelClock; /* Pixel clock in units of Hz */
  34 //    unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
  35 //    unsigned char  Reserved[40];/* remainder of CRTCInfoBlock*/
  36 //}__attribute__ ((packed));
  37
  38 //#define VESA_CRTC_DOUBLESCAN 0x01
  39 //#define VESA_CRTC_INTERLACED 0x02
  40 //#define VESA_CRTC_HSYNC_NEG  0x04
  41 //#define VESA_CRTC_VSYNC_NEG  0x08
  42
  43 //#endif
  44
  45 void GTF_calcTimings(double X,double Y,double freq, int type,
  46                      int want_margins, int want_interlace,struct VesaCRTCInfoBlock *result);
  47
  48 #endif /* GTF_H */