From 40f699cf28784ead46b91719e87bb2be28f9a3d2 Mon Sep 17 00:00:00 2001
From: nbabcock <nathan.r.babcock@gmail.com>
Date: Sat, 18 Feb 2023 14:35:13 -0600
Subject: [PATCH] feat: add input argument alias

---
 examples/h265_transcode.rs | 4 ++--
 src/command.rs             | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/examples/h265_transcode.rs b/examples/h265_transcode.rs
index 67dfe44..a31ae79 100644
--- a/examples/h265_transcode.rs
+++ b/examples/h265_transcode.rs
@@ -15,7 +15,7 @@ fn main() {
 
   // One instance decodes H265 to raw frames
   let mut input = FfmpegCommand::new()
-    .args(&["-i", input_path])
+    .input(input_path)
     .rawvideo()
     .spawn()
     .unwrap();
@@ -37,7 +37,7 @@ fn main() {
     .args(&[
       "-f", "rawvideo", "-pix_fmt", "rgb24", "-s", "600x800", "-r", "30",
     ]) // note: should be possible to infer these params from the source input stream
-    .args(&["-i", "-"])
+    .input("-")
     .args(&["-c:v", "libx265"])
     .args(&["-y", "output/h265_overlay.mp4"])
     .spawn()
diff --git a/src/command.rs b/src/command.rs
index fbdf66a..a7e91c9 100644
--- a/src/command.rs
+++ b/src/command.rs
@@ -15,6 +15,13 @@ pub struct FfmpegCommand {
 impl FfmpegCommand {
   //// Argument presets
 
+  /// Alias for `-i` argument, setting the input file path or URL.
+  pub fn input<S: AsRef<str>>(&mut self, value: S) -> &mut Self {
+    self.arg("-i");
+    self.arg(value.as_ref());
+    self
+  }
+
   /// Generate a procedural test video.
   /// Equivalent to `ffmpeg -i lavfi -f testsrc`
   ///