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/*
* File : driver.c
* This file is part of RTGUI in RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-10-04 Bernard first version
*/
#include <rtgui/driver.h>
struct rtgui_graphic_driver _driver;
extern const struct rtgui_graphic_driver_ops *rtgui_pixel_device_get_ops(int pixel_format);
extern const struct rtgui_graphic_driver_ops *rtgui_framebuffer_get_ops(int pixel_format);
/* get default driver */
struct rtgui_graphic_driver* rtgui_graphic_driver_get_default()
{
return &_driver;
}
void rtgui_graphic_driver_get_rect(const struct rtgui_graphic_driver *driver, rtgui_rect_t *rect)
{
RT_ASSERT(rect != RT_NULL);
RT_ASSERT(driver != RT_NULL);
rect->x1 = rect->y1 = 0;
rect->x2 = driver->width;
rect->y2 = driver->height;
}
rt_err_t rtgui_graphic_set_device(rt_device_t device)
{
rt_err_t result;
struct rt_lcd_info info;
/* get framebuffer address */
result = rt_device_control(device, LCD_GET_INFO, &info);
if (result != RT_EOK)
{
/* get device information failed */
return -RT_ERROR;
}
/* initialize framebuffer driver */
_driver.device = device;
_driver.pixel_format = info.pixel_format;
_driver.byte_per_pixel = info.byte_per_pixel;
_driver.width = info.width;
_driver.height = info.height;
_driver.pitch = _driver.width * _driver.byte_per_pixel;
_driver.framebuffer = info.framebuffer;
if (info.framebuffer != RT_NULL)
{
/* is a frame buffer device */
_driver.ops = rtgui_framebuffer_get_ops(_driver.pixel_format);
}
else
{
/* is a pixel device */
_driver.ops = rtgui_pixel_device_get_ops(_driver.pixel_format);
}
return RT_EOK;
}
/* screen update */
void rtgui_graphic_driver_screen_update(struct rtgui_graphic_driver* driver, rtgui_rect_t *rect)
{
rt_device_control(driver->device, LCD_RECT_UPDATE, rect);
}
/* get video frame buffer */
rt_uint8_t* rtgui_graphic_driver_get_framebuffer(struct rtgui_graphic_driver* driver)
{
return (rt_uint8_t*)driver->framebuffer;
}
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