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#ifndef __FBDISPLAY
#define __FBDISPLAY
typedef struct FbUpdateRequest {
unsigned int offset; /* Start address relative to framebuffer start */
unsigned int count; /* bytes submitted in fbdata */
uint8_t *fbdata;
} FbUpdateRequest;
typedef struct FbFormat {
int red_bits;
int green_bits;
int blue_bits;
int red_shift;
int green_shift;
int blue_shift;
int bits_per_pixel; /* This is the layout in memory */
int depth; /* This is the number of really used bits */
} FbFormat;
typedef struct FbCtrlMsg {
int msg;
} FbCtrlMsg;
/*
* -----------------------------------------------------------------------------------
* The framebuffer display class. Every Framebuffer display needs to implement this
* An example for an FbDisplay is the RFBServer
* -----------------------------------------------------------------------------------
*/
typedef struct FbDisplay {
void *owner;
void (*setFbFormat)(struct FbDisplay *,FbFormat *);
int (*fbUpdateRequest)(struct FbDisplay *,FbUpdateRequest *);
int (*fbCtrlMsg)(struct FbDisplay *,FbCtrlMsg *);
} FbDisplay;
/*
* --------------------------------------------------------------------
* FB_Display constructor needs to be called with information about
* the display resulution, the depth of each color.
* The LCD controller emulator has to set the information about
* the storage format in memory
* --------------------------------------------------------------------
*/
static inline int
FbDisplay_UpdateRequest(FbDisplay *disp,FbUpdateRequest *req)
{
if(disp && disp->fbUpdateRequest) {
return disp->fbUpdateRequest(disp,req);
} else {
fprintf(stderr,"Display does not handle updates\n");
return -1;
}
}
static inline void
FbDisplay_SetFbFormat(FbDisplay *disp,FbFormat *fbf)
{
if(disp && disp->setFbFormat) {
return disp->setFbFormat(disp,fbf);
} else {
fprintf(stderr,"Display does not take framebuffer info\n");
return;
}
}
static inline int
FbDisplay_ControlMessage(FbDisplay *disp,FbCtrlMsg *msg)
{
if(disp && disp->fbCtrlMsg) {
return disp->fbCtrlMsg(disp,msg);
} else {
return -1;
}
}
#endif /* __FBSIDPLAY */
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