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try to fix unmap error,automatically unmapped don't work ?

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Origin commit data
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Branch: master
Commit: a5b78f24ed
Author: Jacek Jendrzej <overx300@gmail.com>
Date: 2019-01-14 (Mon, 14 Jan 2019)


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This commit was generated by Migit
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Jacek Jendrzej
2019-01-14 10:44:13 +01:00
committed by max_10
parent fc61b8d980
commit 073cc1a866
1 changed files with 8 additions and 2 deletions
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10
libarmbox/video.cpp
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@@ -1069,7 +1069,7 @@ void get_osd_buf(unsigned char *osd_data)
struct fb_fix_screeninfo fix_screeninfo; struct fb_fix_screeninfo fix_screeninfo;
struct fb_var_screeninfo var_screeninfo; struct fb_var_screeninfo var_screeninfo;
int fb=open("/dev/fb/0", O_RDWR); int fb=open("/dev/fb/0", O_RDONLY);
if (fb == -1) if (fb == -1)
{ {
fprintf(stderr, "Framebuffer failed\n"); fprintf(stderr, "Framebuffer failed\n");
@@ -1090,7 +1090,7 @@ void get_osd_buf(unsigned char *osd_data)
return; return;
} }
void *lfb = (unsigned char*)mmap(0, fix_screeninfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fb, 0); void *lfb = (unsigned char*)mmap(0, fix_screeninfo.smem_len, PROT_READ , MAP_SHARED, fb, 0);
if(lfb == MAP_FAILED) if(lfb == MAP_FAILED)
{ {
fprintf(stderr, "Framebuffer: <Memmapping failed>\n"); fprintf(stderr, "Framebuffer: <Memmapping failed>\n");
@@ -1104,6 +1104,12 @@ void get_osd_buf(unsigned char *osd_data)
// get 32bit framebuffer // get 32bit framebuffer
memcpy(osd_data,lfb,fix_screeninfo.line_length*var_screeninfo.yres); memcpy(osd_data,lfb,fix_screeninfo.line_length*var_screeninfo.yres);
} }
if (munmap(lfb, fix_screeninfo.smem_len) == -1)
{
perror("Error un-mmapping");
}
close(fb); close(fb);
} }