vga_vmode.h

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#ifndef _VGA_VMODE_H
#define _VGA_VMODE_H
 
#define VIDEO_NAME_LEN  5   
 
typedef struct {
    // horizontal
    float   htot;       
    float   hfront;     
    float   hsync;      
    float   hback;      
    float   hfull;      
 
    // vertical
    u16 vtot;       
    u16 vmax;       
 
    // subframe 1
    u16 vsync1;     
    u16 vpost1;     
    u16 vback1;     
    u16 vact1;      
    u16 vfront1;    
    u16 vpre1;      
 
    // subframe 2 (ignored if not interlaced)
    u16 vsync2;     
    u16 vpost2;     
    u16 vback2;     
    u16 vact2;      
    u16 vfront2;    
    u16 vpre2;      
 
    // name
    const char* name;   
 
    // flags
    bool    inter;      
    bool    psync;      
    bool    odd;        
} sVideo;
 
 
// === TV videomodes
 
extern const sVideo VideoPAL;
 
extern const sVideo VideoPALp;
 
extern const sVideo VideoNTSC;
 
extern const sVideo VideoNTSCp;
 
// === Monitor videomodes
 
extern const sVideo VideoEGA;
 
extern const sVideo VideoVGA;
 
extern const sVideo VideoSVGA;
 
extern const sVideo VideoXGA;
 
extern const sVideo VideoVESA;
 
extern const sVideo VideoHD;
 
typedef struct {
    u16 width;              
    u16 height;             
    u16 wfull;              
    const sVideo* video;    
    u32 freq;               
    u32 fmax;               
    u8  mode[LAYERS_MAX];   
    bool    dbly;           
    bool    lockfreq;       
} sVgaCfg;
 
typedef struct {
    // screen resolution
    u16 width;      
    u16 height;     
    u16 wfull;      
    u16 wmax;       
 
    // setup PLL system clock
    u32 freq;       
    u32 vco;        
    u16 fbdiv;      
    u8  pd1;        
    u8  pd2;        
 
    // setup PIO state machine  
    u16 div;                
    u16 cpp;                
    u8  prog;               
    u8  mode[LAYERS_MAX];   
 
    // horizontal timings
    u16 htot;       
    u16 hfront;     
    u16 hsync;      
    u16 hback;      
    float hfreq;    
 
    // vertical timings
    u16 vtot;       
    u16 vmax;       
    float vfreq;    
 
    // subframe 1
    u16 vsync1;     
    u16 vpost1;     
    u16 vback1;     
    u16 vact1;      
    u16 vfront1;    
    u16 vpre1;      
    u16 vfirst1;    
 
    // subframe 2 (ignored if not interlaced)
    u16 vsync2;     
    u16 vpost2;     
    u16 vback2;     
    u16 vact2;      
    u16 vfront2;    
    u16 vpre2;      
    u16 vfirst2;    
 
    // name
    const char* name;   
 
    // flags
    bool lockfreq;  
    bool dbly;      
    bool inter;     
    bool psync;     
    bool odd;       
} sVmode;
 
enum {
    DEV_PAL = 0,    
    DEV_NTSC,       
    DEV_VGA,        
 
    DEV_MAX
};
 
enum {
    RES_ZX = 0, 
    RES_CGA,    
    RES_QVGA,   
    RES_EGA,    
    RES_VGA,    
    RES_SVGA,   
    RES_XGA,    
    RES_HD,     
 
    RES_MAX
};
 
enum {
    FORM_8BIT = 0,  
    FORM_4BIT,      
    FORM_MONO,      
    FORM_TILE8,     
    FORM_TILE12,    
    FORM_TILE16,    
    FORM_TILE24,    
    FORM_TILE32,    
    FORM_TILE48,    
    FORM_TILE64,    
    FORM_MTEXT8,    
    FORM_MTEXT16,   
    FORM_TEXT8,     
    FORM_TEXT16,    
    FORM_RLE,       
 
    FORM_MAX
};
 
extern sVmode Vmode;    
extern sVgaCfg Cfg;     
extern sCanvas Canvas;  
 
extern u16 Pal16Trans[256];
 
void VgaCfgDef(sVgaCfg* cfg);
 
void VgaPrintCfg(const sVmode* vmode);
 
void VgaCfg(const sVgaCfg* cfg, sVmode* vmode);
 
 
 
void Video(u8 dev, u8 res, u8 form, u8* buf, const void* buf2 = FontBoldB8x16);
 
 
 
#endif // _VGA_VMODE_H