59 lines
2.4 KiB
Rust
59 lines
2.4 KiB
Rust
//! Animated GIF footage through the wired session (#651): the imported item is a movie whose
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//! frames follow the file's own delays in preview rendering, not one frozen still.
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use effectcraft_engine::render::RenderOpts;
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use effectcraft_project::{ItemId, ItemKind};
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use effectcraft_time::Tick;
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use serde_json::json;
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fn tmp(name: &str) -> String {
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let d = std::env::temp_dir().join(format!("effectcraft-host-gif-{}", std::process::id()));
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std::fs::create_dir_all(&d).unwrap();
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d.join(name).to_string_lossy().to_string()
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}
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/// A 3-frame 16×16 GIF: red, green, blue, one tenth of a second each.
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fn animated_gif() -> Vec<u8> {
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let mut out = Vec::new();
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{
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let mut enc = gif::Encoder::new(&mut out, 16, 16, &[]).unwrap();
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for rgb in [[255u8, 0, 0], [0, 255, 0], [0, 0, 255]] {
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let mut f = gif::Frame::from_rgb(16, 16, &rgb.repeat(256));
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f.delay = 10;
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enc.write_frame(&f).unwrap();
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}
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}
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out
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}
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fn centre(s: &effectcraft_engine::Session, comp: ItemId, t: f64) -> [f32; 3] {
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let img = s.render(comp, Tick::from_seconds_f64(t), RenderOpts::default());
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let p = img.data[8 * 16 + 8];
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[p[0], p[1], p[2]]
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}
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#[test]
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fn an_imported_animated_gif_plays_its_frames() {
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let mut s = effectcraft_host::session();
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let path = tmp("anim.gif");
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std::fs::write(&path, animated_gif()).unwrap();
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s.execute("comp.new", json!({"name": "Gif", "width": 16, "height": 16, "frameRate": 10, "duration": 1})).unwrap();
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let before = s.project.items.len();
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s.execute("file.import", json!({"paths": [path.clone()], "addToComp": true})).unwrap();
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let f = match s.project.items.values().find_map(|i| match &i.kind {
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ItemKind::Footage(f) if f.path == path => Some(f),
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_ => None,
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}) {
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Some(f) => f.clone(),
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None => panic!("no footage item for the GIF"),
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};
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assert_eq!(s.project.items.len(), before + 1, "one footage item, not a comp");
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assert_eq!((f.codec.as_str(), f.has_video), ("GIF", true), "probed as an animated movie");
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let cid = s.active_comp_id().unwrap();
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let (r, g, b) = (centre(&s, cid, 0.05), centre(&s, cid, 0.15), centre(&s, cid, 0.25));
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let _ = std::fs::remove_file(&path);
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assert!(r[0] > 0.9 && r[1] < 0.1, "frame at 0.05 s is red, got {r:?}");
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assert!(g[1] > 0.9 && g[0] < 0.1, "frame at 0.15 s is green, got {g:?}");
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assert!(b[2] > 0.9 && b[0] < 0.1, "frame at 0.25 s is blue, got {b:?}");
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}
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