✨ feat(main): 支持从命令行参数设置摄像头设备、分辨率和帧率

src/main.rs

@@ -1,5 +1,5 @@
 extern crate rscam;
-use std::time::Instant;
+use std::{env, time::Instant};
 
 use fltk::{
     app::App,
@@ -12,6 +12,12 @@ use fltk::{
 use rscam::{Camera, Config};
 
 fn main() {
+    let args: Vec<String> = env::args().collect();
+    println!("{:?}", args);
+    let camera_device = &args[1];
+    let w = args[2].clone();
+    let h = args[3].clone();
+    let fps = args[4].clone();
     let mut camera_open = false;
     let app = App::default();
     let mut camera_window = Window::new(100, 100, 400, 300, "Camera Video Output Window");
@@ -24,14 +30,14 @@ fn main() {
     color_window.show();
     // app.run().unwrap();
     // 打开摄像头设备
-    let mut camera = Camera::new("/dev/video0").unwrap();
+    let mut camera = Camera::new(camera_device).unwrap();
 
     // 配置摄像头参数
     match camera.start(&Config {
         // use command 'v4l2-ctl --list-formats-ext' see more...
-        interval: (1, 210),     // 设置帧率为 30fps
-        resolution: (640, 400), // 设置分辨率为 640x480
-        format: b"MJPG",        // 设置图像格式为 MJPG
+        interval: (1, parse(fps)),        // 设置帧率为 30fps
+        resolution: (parse(w), parse(h)), // 设置分辨率为 640x480
+        format: b"MJPG",                  // 设置图像格式为 MJPG
         ..Default::default()
     }) {
         Ok(_) => camera_open = true,
@@ -74,3 +80,14 @@ fn main() {
         }
     }
 }
+
+/// 从 args 传入的数字转换为 u32
+fn parse(str: String) -> u32 {
+    match str.parse::<u32>() {
+        Ok(data) => return data,
+        Err(e) => {
+            eprintln!("Error:${}", e);
+            return 0;
+        }
+    }
+}