91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
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* File : driver.c
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* This file is part of RTGUI in RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-04 Bernard first version
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*/
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#include <rtthread.h>
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#include <rtgui/driver.h>
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struct rtgui_graphic_driver _driver;
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extern const struct rtgui_graphic_driver_ops *rtgui_pixel_device_get_ops(int pixel_format);
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extern const struct rtgui_graphic_driver_ops *rtgui_framebuffer_get_ops(int pixel_format);
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/* get default driver */
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struct rtgui_graphic_driver* rtgui_graphic_driver_get_default()
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{
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return &_driver;
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}
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void rtgui_graphic_driver_get_rect(const struct rtgui_graphic_driver *driver, rtgui_rect_t *rect)
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{
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RT_ASSERT(rect != RT_NULL);
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RT_ASSERT(driver != RT_NULL);
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rect->x1 = rect->y1 = 0;
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rect->x2 = driver->width;
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rect->y2 = driver->height;
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}
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rt_err_t rtgui_graphic_set_device(rt_device_t device)
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{
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rt_err_t result;
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struct rt_device_graphic_info info;
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/* get framebuffer address */
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result = rt_device_control(device, RTGRAPHIC_CTRL_GET_INFO, &info);
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if (result != RT_EOK)
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{
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/* get device information failed */
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return -RT_ERROR;
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}
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/* initialize framebuffer driver */
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_driver.device = device;
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_driver.pixel_format = info.pixel_format;
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_driver.bits_per_pixel = info.bits_per_pixel;
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_driver.width = info.width;
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_driver.height = info.height;
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_driver.pitch = _driver.width * _driver.bits_per_pixel/8;
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_driver.framebuffer = info.framebuffer;
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if (info.framebuffer != RT_NULL)
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{
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/* is a frame buffer device */
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_driver.ops = rtgui_framebuffer_get_ops(_driver.pixel_format);
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}
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else
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{
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/* is a pixel device */
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_driver.ops = rtgui_pixel_device_get_ops(_driver.pixel_format);
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}
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return RT_EOK;
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}
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/* screen update */
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void rtgui_graphic_driver_screen_update(const struct rtgui_graphic_driver* driver, rtgui_rect_t *rect)
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{
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struct rt_device_rect_info rect_info;
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rect_info.x = rect->x1; rect_info.y = rect->y1;
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rect_info.width = rect->x2 - rect->x1;
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rect_info.height = rect->y2 - rect->y1;
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rt_device_control(driver->device, RTGRAPHIC_CTRL_RECT_UPDATE, &rect_info);
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}
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/* get video frame buffer */
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rt_uint8_t* rtgui_graphic_driver_get_framebuffer(const struct rtgui_graphic_driver* driver)
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{
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return (rt_uint8_t*)driver->framebuffer;
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}
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