.TH "KDK_EDID_GET_RATIO" 3 "Fri Aug 25 2023" "Linux Programmer's Manual" \"
.SH NAME
kdk_edid_get_ratio - 获取图像高宽比
.SH SYNOPSIS
.nf
.B #include <libkyedid.h>
.sp
.BI "extern char* kdk_edid_get_ratio(char *"name ");"
.sp
Link with \fI\-lkyedid\fP.
.SH "Detailed Description"
The main function of the interface is to obtain the image aspect ratio of the screen.
.PP
The argument
.I name
is the current interface of the screen.
.SH "RETURN VALUE"
On success, returns the image aspect ratio of type char*; The returned string needs to be released by
.I free
.PP
On error, return
.BR NULL.
.SH EXAMPLES
.EX
#include "libkyedid.h"
#include <stdio.h>
#include <stdlib.h>

int main()
{
    char** name = kdk_edid_get_interface();
    size_t count = 0;
    while (name[count])
    {
        printf("当前接口 = %s\n", name[count]);
        float gamma = kdk_edid_get_gamma(name[count]);
        printf("gamma = %0.2f\n", gamma);
        float size = kdk_edid_get_size(name[count]);
        printf("size = %0.1f\n", size);
        char *max_resolution = kdk_edid_get_max_resolution(name[count]);
        printf("max_resolution = %s\n", max_resolution);
        free(max_resolution);
        char *model = kdk_edid_get_model(name[count]);
        printf("model = %s\n", model);
        free(model);
        char *area = kdk_edid_get_visible_area(name[count]);
        printf("area = %s\n", area);
        free(area);
        char *manufacturer = kdk_edid_get_manufacturer(name[count]);
        printf("manufacturer = %s\n", manufacturer);
        free(manufacturer);
        int week = kdk_edid_get_week(name[count]);
        printf("week = %d\n", week);
        int year = kdk_edid_get_year(name[count]);
        printf("year = %d\n", year);
        int primary = kdk_edid_get_primary(name[count]);
        printf("%s\n", primary == 1 ? "是" : "否");

        char *resolution = kdk_edid_get_resolution(name[count]);
        printf("resolution = %s\n", resolution);
        free(resolution);

        char *ratio = kdk_edid_get_ratio(name[count]);
        printf("ratio = %s\n", ratio);
        free(ratio);

        char *character = kdk_edid_get_character(name[count]);
        printf("character = %s\n", character);
        free(character);

        printf("---------------------------------------\n");
        count ++;
    }
    kdk_edid_freeall(name);
    return 0;
}

.SH "CONFORMING TO"
These functions are as per the withdrawn POSIX.1e draft specification.
The following functions are Linux extensions:
.BR kdk_edid_get_interface (),
.BR kdk_edid_get_gamma (),
.BR kdk_edid_get_size (),
.BR kdk_edid_get_max_resolution (),
.BR kdk_edid_get_model (),
.BR kdk_edid_get_visible_area (),
.BR kdk_edid_get_manufacturer (),
.BR kdk_edid_get_week (),
.BR kdk_edid_get_year (),
.BR kdk_edid_get_primary (),
.BR kdk_edid_get_resolution (),
.BR kdk_edid_get_character ()
and
.BR kdk_edid_freeall ().
.SH "SEE ALSO"
.BR kdk_edid_get_interface (3),
.BR kdk_edid_get_gamma (3),
.BR kdk_edid_get_size (3),
.BR kdk_edid_get_max_resolution (3),
.BR kdk_edid_get_model (3),
.BR kdk_edid_get_visible_area (3),
.BR kdk_edid_get_manufacturer (3),
.BR kdk_edid_get_week (3),
.BR kdk_edid_get_year (3),
.BR kdk_edid_get_primary (3),
.BR kdk_edid_get_resolution (3),
.BR kdk_edid_get_character (3)
and
.BR kdk_edid_freeall (3).