liberscribble/include/driver.h File Reference

#include <sys/time.h>
#include "scbconfig.h"
#include "scbpoint.h"
#include <liberdm/erdm.h>
#include <glib.h>

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Go to the source code of this file.

Classes
struct	_DrvPointInfo
struct	_DrvPointsBuf
struct	_FastDrawContext
Typedefs
typedef struct _DrvPointInfo	DrvPointInfo
typedef struct _DrvPointsBuf	DrvPointsBuf
typedef DrvPointsBuf *	DrvPointsBufPtr
typedef struct _FastDrawContext	FastDrawContext
Functions
void	scb_driver_init ()
void	scb_driver_close ()
void	scb_driver_draw (DrvPointsBufPtr ptr)
void	scb_fast_draw_reset_context ()
gboolean	scb_fast_draw_now ()
void	scb_fast_draw_record (const ScbDevPointPtr ptr, const unsigned char size, const unsigned char color, const unsigned char pen_down)
void	scb_fast_draw ()
void	scb_fast_draw_points (DrvPointsBufPtr ptr)

---

Typedef Documentation

typedef struct _DrvPointInfo DrvPointInfo

Copyright (C) 2005-2008 iRex Technologies B.V. All rights reserved.

typedef struct _DrvPointsBuf DrvPointsBuf

typedef DrvPointsBuf* DrvPointsBufPtr

Definition at line 53 of file driver.h.

typedef struct _FastDrawContext FastDrawContext

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Function Documentation

void scb_driver_close

(

)

Definition at line 52 of file driver.c.

{
    // always close
    close(fbdev);
}

void scb_driver_draw

(

DrvPointsBufPtr

ptr

)

Definition at line 58 of file driver.c.

{
    if (ptr)
    {   
        if (0 != ioctl (fbdev, FBIO_DRAWPIXELS, ptr))
        {
            SCB_ERROR("ioctl request error!");
        }
    }
}

void scb_driver_init

(

)

Definition at line 36 of file driver.c.

{
    if (fbdev)
    {
        SCB_ERROR("/dev/fb0 already open!");
        return;
    }

    fbdev = open("/dev/fb0", O_RDWR);
    if (-1 == fbdev)
    {
        SCB_ERROR("Could not open /dev/fb0!");
        return;
    }
}

void scb_fast_draw

(

)

Definition at line 125 of file driver.c.

{
    scb_driver_draw(&s_fast_draw_ctx.points);
}

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gboolean scb_fast_draw_now

(

)

SCB_TRACE("Should draw now time!");

Definition at line 81 of file driver.c.

{
    // check points 
    if (s_fast_draw_ctx.points.count > SCB_DEF_FAST_DRAW_COUNT)
    {
        //SCB_TRACE("Should draw now points!");
        return TRUE;
    }

    // check time
    static const long usec = 1000 * 1000;
    long elapsed = ( s_fast_draw_ctx.t2.tv_sec - s_fast_draw_ctx.t1.tv_sec ) * usec;
    elapsed += s_fast_draw_ctx.t2.tv_usec - s_fast_draw_ctx.t1.tv_usec;

    if (elapsed >= SCB_DEF_FAST_DRAW_TIME)
    {
        return TRUE;
    }
    //SCB_TRACE("No, not yet. Waiting for...");
    return FALSE;
}

void scb_fast_draw_points

(

DrvPointsBufPtr

ptr

)

Definition at line 131 of file driver.c.

{
    scb_driver_draw(ptr);
}

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void scb_fast_draw_record	(	const ScbDevPointPtr	ptr,
		const unsigned char	size,
		const unsigned char	color,
		const unsigned char	pen_down
	)

Definition at line 106 of file driver.c.

{
    // make a check
    if (s_fast_draw_ctx.points.count <  SCB_DEF_FAST_DRAW_BUF_LEN && ptr)
    {
        s_fast_draw_ctx.points.points[s_fast_draw_ctx.points.count].x = ptr->x;
        s_fast_draw_ctx.points.points[s_fast_draw_ctx.points.count].y = ptr->y;
        s_fast_draw_ctx.points.points[s_fast_draw_ctx.points.count].size = size;
        s_fast_draw_ctx.points.points[s_fast_draw_ctx.points.count].color = color;
        s_fast_draw_ctx.points.points[s_fast_draw_ctx.points.count].pen_down = pen_down;
        ++s_fast_draw_ctx.points.count;
        gettimeofday(&s_fast_draw_ctx.t2, NULL);
    }
}

void scb_fast_draw_reset_context

(

)

Definition at line 72 of file driver.c.

{
    s_fast_draw_ctx.points.count = 0;
    gettimeofday(&s_fast_draw_ctx.t1, NULL);
    s_fast_draw_ctx.t2.tv_sec   = s_fast_draw_ctx.t1.tv_sec;
    s_fast_draw_ctx.t2.tv_usec  = s_fast_draw_ctx.t1.tv_usec;
}