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使用内核线程来刷新屏幕 (#57)

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* 修改了test-idr的错误

* new: 修复切换双缓冲的时候的卡顿问题

Signed-off-by: guanjinquan <1666320330@qq.com>
Co-authored-by: guanjinquan <1666320330@qq.com>
Co-authored-by: fslongjin <longjin@RinGoTek.cn>
This commit is contained in:
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2022-10-12 18:45:58 +08:00
committed by GitHub
parent 1b0c901ab2
commit efa38a7d5d
11 changed files with 152 additions and 87 deletions
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30
kernel/lib/libUI/screen_manager.c
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@ -1,12 +1,12 @@
#include "screen_manager.h"
#include <common/string.h>
#include <driver/multiboot2/multiboot2.h>
#include <common/kprint.h>
#include <common/spinlock.h>
#include <mm/mm.h>
#include <mm/slab.h>
#include <common/string.h>
#include <driver/multiboot2/multiboot2.h>
#include <driver/uart/uart.h>
#include <driver/video/video.h>
#include <mm/mm.h>
#include <mm/slab.h>
extern struct scm_buffer_info_t video_frame_buffer_info;
static struct List scm_framework_list;
@ -234,35 +234,43 @@ int scm_enable_alloc()
*/
int scm_enable_double_buffer()
{
if (__scm_double_buffer_enabled == true)
if (__scm_double_buffer_enabled == true) // 已经开启了双缓冲区了, 直接退出
return 0;
__scm_double_buffer_enabled = true;
if (list_empty(&scm_framework_list))
if (list_empty(&scm_framework_list)) // scm 框架链表为空
return 0;
// 逐个检查已经注册了的ui框架，将其缓冲区更改为双缓冲
struct scm_ui_framework_t *ptr = container_of(list_next(&scm_framework_list), struct scm_ui_framework_t, list);
// 这里的ptr不需要特判空指针吗 问题1
do
{
if (ptr->buf == &video_frame_buffer_info)
{
uart_send_str(COM1, "##init double buffer##");
uart_send_str(COM1, "##init double buffer##\n");
struct scm_buffer_info_t *buf = __create_buffer(SCM_BF_DB | SCM_BF_PIXEL);
if ((uint64_t)(buf) == (uint64_t)-ENOMEM)
return -ENOMEM;
uart_send_str(COM1, "##to change double buffer##");
if (ptr->ui_ops->change(buf) != 0)
uart_send_str(COM1, "##to change double buffer##\n");
if (ptr->ui_ops->change(buf) != 0) // 这里的change回调函数不会是空指针吗 问题2
{
__destroy_buffer(buf);
kfree(buf);
}
}
} while (list_next(&ptr->list) != &scm_framework_list);
} while (list_next(&ptr->list) != &scm_framework_list); // 枚举链表的每一个ui框架
// 设置定时刷新的对象
video_set_refresh_target(__current_framework->buf);
// 通知显示驱动，启动双缓冲
video_reinitialize(true);
uart_send_str(COM1, "##initialized double buffer##");
uart_send_str(COM1, "##initialized double buffer##\n");
return 0;
}