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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-11 GuEe-GUI the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <virtio_gpu.h>
#include <virtio_input.h>
#define GRAPHIC_THREAD_PRIORITY 25
#define GRAPHIC_THREAD_STACK_SIZE 4096
#define GRAPHIC_THREAD_TIMESLICE 5
static rt_uint32_t cur_min[2];
static rt_uint32_t cur_max[2];
static rt_uint32_t cur_range[2];
static rt_uint32_t cur_points[2];
static rt_uint32_t cur_last_points[2];
static rt_bool_t cur_event_sync;
static rt_uint32_t color[2] = { 0xff0000, 0x0000ff };
static rt_uint8_t cursor[VIRTIO_GPU_CURSOR_IMG_SIZE] rt_align(VIRTIO_PAGE_SIZE);
void tablet_event_handler(struct virtio_input_event event)
{
static rt_bool_t cur_btn_down = RT_FALSE;
if (event.type == EV_ABS)
{
if (event.code == 0)
{
cur_points[0] = (cur_max[0] * (event.value - cur_min[0]) + cur_range[0] / 2) / cur_range[0];
}
else if (event.code == 1)
{
cur_points[1] = (cur_max[1] * (event.value - cur_min[1]) + cur_range[1] / 2) / cur_range[1];
}
}
else if (event.type == EV_KEY)
{
if (event.code == BTN_LEFT)
{
if (cur_btn_down && event.value == 0)
{
color[0] ^= color[1];
color[1] ^= color[0];
color[0] ^= color[1];
cur_btn_down = RT_FALSE;
cur_event_sync = RT_TRUE;
}
else
{
cur_btn_down = RT_TRUE;
}
}
}
else if (event.type == EV_SYN)
{
cur_event_sync = RT_TRUE;
}
}
void graphic_thread(void *param)
{
int i;
char dev_name[RT_NAME_MAX];
rt_device_t device = RT_NULL;
rt_device_t tablet_dev = RT_NULL;
struct virtio_input_config tablet_config;
rt_uint32_t white = 0xffffff;
rt_device_t gpu_dev = RT_NULL;
struct rt_device_rect_info rect_info;
struct rt_device_graphic_info graphic_info;
struct rt_device_graphic_ops *virtio_gpu_graphic_ops;
/* GPU */
device = rt_device_find("virtio-gpu0");
if (device != RT_NULL && rt_device_open(device, 0) == RT_EOK)
{
virtio_gpu_graphic_ops = rt_graphix_ops(device);
rt_memset(&rect_info, 0, sizeof(rect_info));
rt_memset(&graphic_info, 0, sizeof(graphic_info));
rt_device_control(device, VIRTIO_DEVICE_CTRL_GPU_SET_PRIMARY, RT_NULL);
rt_device_control(device, VIRTIO_DEVICE_CTRL_GPU_CREATE_2D, (void *)RTGRAPHIC_PIXEL_FORMAT_RGB888);
rt_device_control(device, RTGRAPHIC_CTRL_GET_INFO, &graphic_info);
rect_info.x = 0;
rect_info.y = 0;
rect_info.width = graphic_info.width;
rect_info.height = graphic_info.height;
if (graphic_info.framebuffer != RT_NULL)
{
int i = 0;
rt_memset(graphic_info.framebuffer, 0xff, graphic_info.pitch * graphic_info.height);
cur_last_points[0] = graphic_info.width / 2;
cur_last_points[1] = graphic_info.height / 2;
virtio_gpu_graphic_ops->draw_hline((char *)&color[0], 0, graphic_info.width, cur_last_points[1]);
virtio_gpu_graphic_ops->draw_vline((char *)&color[1], cur_last_points[0], 0, graphic_info.height);
rt_device_control(device, RTGRAPHIC_CTRL_RECT_UPDATE, &rect_info);
while (i < sizeof(cursor) / 4)
{
/* R: 0x4c G: 0xaf B: 0x50 A: 0.8 */
((rt_uint32_t *)cursor)[i] = 0xcc4caf50;
++i;
}
rt_device_control(device, VIRTIO_DEVICE_CTRL_CURSOR_SETUP, cursor);
rt_device_control(device, VIRTIO_DEVICE_CTRL_CURSOR_MOVE, (rt_uint32_t[]){0, 0});
gpu_dev = device;
}
}
/* Keyboard, Mouse, Tablet */
for (i = 0; i < 3; ++i)
{
rt_snprintf(dev_name, RT_NAME_MAX, "virtio-input%d", i);
device = rt_device_find(dev_name);
if (device != RT_NULL && rt_device_open(device, 0) == RT_EOK)
{
enum virtio_input_type type;
rt_device_control(device, VIRTIO_DEVICE_CTRL_INPUT_GET_TYPE, &type);
if (type == VIRTIO_INPUT_TYPE_TABLET)
{
tablet_dev = device;
}
else
{
rt_device_close(device);
}
}
}
if (tablet_dev == RT_NULL || gpu_dev == RT_NULL)
{
goto _graphic_fail;
}
cur_max[0] = graphic_info.width;
cur_max[1] = graphic_info.height;
rt_device_control(tablet_dev, VIRTIO_DEVICE_CTRL_INPUT_GET_ABS_X_INFO, &tablet_config);
cur_min[0] = tablet_config.abs.min;
cur_range[0] = tablet_config.abs.max - cur_min[0];
rt_device_control(tablet_dev, VIRTIO_DEVICE_CTRL_INPUT_GET_ABS_Y_INFO, &tablet_config);
cur_min[1] = tablet_config.abs.min;
cur_range[1] = tablet_config.abs.max - cur_min[1];
cur_event_sync = RT_FALSE;
rt_device_control(tablet_dev, VIRTIO_DEVICE_CTRL_INPUT_BIND_BSCT_HANDLER, tablet_event_handler);
for (;;)
{
while (cur_event_sync)
{
virtio_gpu_graphic_ops->draw_hline((char *)&white, 0, graphic_info.width, cur_last_points[1]);
virtio_gpu_graphic_ops->draw_vline((char *)&white, cur_last_points[0], 0, graphic_info.height);
cur_last_points[0] = cur_points[0];
cur_last_points[1] = cur_points[1];
virtio_gpu_graphic_ops->draw_hline((char *)&color[0], 0, graphic_info.width, cur_last_points[1]);
virtio_gpu_graphic_ops->draw_vline((char *)&color[1], cur_last_points[0], 0, graphic_info.height);
rt_device_control(gpu_dev, RTGRAPHIC_CTRL_RECT_UPDATE, &rect_info);
cur_event_sync = RT_FALSE;
rt_thread_mdelay(1);
}
}
_graphic_fail:
if (gpu_dev != RT_NULL)
{
rt_device_close(gpu_dev);
}
if (tablet_dev != RT_NULL)
{
rt_device_close(tablet_dev);
}
}
int graphic_test(void)
{
rt_thread_t graphic_tid = rt_thread_create("graphic work", graphic_thread, RT_NULL,
GRAPHIC_THREAD_STACK_SIZE, GRAPHIC_THREAD_PRIORITY, GRAPHIC_THREAD_TIMESLICE);
if (graphic_tid != RT_NULL)
{
rt_thread_startup(graphic_tid);
return RT_EOK;
}
return -RT_ERROR;
}
MSH_CMD_EXPORT(graphic_test, Graphic test);
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