58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
extern crate x264;
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use std::fs::File;
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use std::io::Write;
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use x264::{Colorspace, Encoder, Image};
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fn main() {
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const WIDTH: usize = 480;
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const HEIGHT: usize = 360;
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// Initialize things.
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let mut encoder = Encoder::builder()
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.fps(60, 1)
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.build(Colorspace::RGB, WIDTH as _, HEIGHT as _)
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.unwrap();
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let mut file = File::create("fade.h264").unwrap();
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let mut canvas = vec![0; WIDTH * HEIGHT * 3];
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println!("Initialized!");
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// Write the headers.
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{
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let headers = encoder.headers().unwrap();
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file.write_all(headers.entirety()).unwrap();
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}
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// Queue each frame.
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for i in 0..300 {
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frame(i as f64 / 300.0, &mut canvas);
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let image = Image::rgb(WIDTH as _, HEIGHT as _, &canvas);
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let (data, _) = encoder.encode((60 * i) as _, image).unwrap();
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file.write_all(data.entirety()).unwrap();
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}
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// Finally, flush any delayed frames.
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{
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let mut flush = encoder.flush();
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while let Some(result) = flush.next() {
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let (data, _) = result.unwrap();
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file.write_all(data.entirety()).unwrap();
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}
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}
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println!("Done! The output is at `fade.h264`.");
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println!("Good luck finding a H.264 viewer, though! ;)");
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}
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fn frame(p: f64, f: &mut [u8]) {
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let lum = (255.0 * p).floor().min(255.0) as u8;
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for x in f {
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*x = lum;
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}
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}
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