source code

libs/scrap/examples/ffplay.rs

@@ -0,0 +1,51 @@
+extern crate scrap;
+
+fn main() {
+    use scrap::{Capturer, Display};
+    use std::io::ErrorKind::WouldBlock;
+    use std::io::Write;
+    use std::process::{Command, Stdio};
+
+    let d = Display::primary().unwrap();
+    let (w, h) = (d.width(), d.height());
+
+    let child = Command::new("ffplay")
+        .args(&[
+            "-f",
+            "rawvideo",
+            "-pixel_format",
+            "bgr0",
+            "-video_size",
+            &format!("{}x{}", w, h),
+            "-framerate",
+            "60",
+            "-",
+        ])
+        .stdin(Stdio::piped())
+        .spawn()
+        .expect("This example requires ffplay.");
+
+    let mut capturer = Capturer::new(d, false).unwrap();
+    let mut out = child.stdin.unwrap();
+
+    loop {
+        match capturer.frame(0) {
+            Ok(frame) => {
+                // Write the frame, removing end-of-row padding.
+                let stride = frame.len() / h;
+                let rowlen = 4 * w;
+                for row in frame.chunks(stride) {
+                    let row = &row[..rowlen];
+                    out.write_all(row).unwrap();
+                }
+            }
+            Err(ref e) if e.kind() == WouldBlock => {
+                // Wait for the frame.
+            }
+            Err(_) => {
+                // We're done here.
+                break;
+            }
+        }
+    }
+}