rename + readme

1 files changed, 60 insertions, 0 deletions

diff --git a/bv1/codec-web/src/lib.rs b/bv1/codec-web/src/lib.rs
new file mode 100644
index 0000000..cb2ad3c
--- /dev/null
+++ b/bv1/codec-web/src/lib.rs
@@ -0,0 +1,60 @@
+use bv1::{Decoder, Frame, P2};
+use std::{collections::VecDeque, sync::RwLock};
+use wasm_bindgen::prelude::*;
+
+static DECODER: RwLock<Option<State>> = RwLock::new(None);
+
+struct State {
+    buffer: VecDeque<u8>,
+    frame: Frame,
+    decoder: Decoder,
+}
+
+// #[wasm_bindgen]
+// extern "C" {
+//     #[wasm_bindgen(js_namespace = console)]
+//     fn log(s: &str);
+//     #[wasm_bindgen(js_namespace = console, js_name = "log")]
+//     fn logs(s: String);
+// }
+
+#[wasm_bindgen(start)]
+fn panic_init() {
+    std::panic::set_hook(Box::new(console_error_panic_hook::hook));
+}
+
+#[wasm_bindgen]
+pub fn decode_init(width: i32, height: i32) {
+    let size = P2 {
+        x: width,
+        y: height,
+    };
+    *DECODER.write().unwrap() = Some(State {
+        frame: Frame::new(size),
+        decoder: Decoder::new(size),
+        buffer: VecDeque::new(),
+    });
+}
+
+#[wasm_bindgen]
+pub fn decode_frame(buf: &[u8], debug: bool) -> Vec<u8> {
+    let mut arr = Vec::new();
+    let mut g = DECODER.write().unwrap();
+    let state = g.as_mut().unwrap();
+    state.buffer.extend(buf.iter());
+
+    state
+        .decoder
+        .decode_frame(&mut state.buffer, &mut state.frame, debug)
+        .unwrap();
+
+    for y in 0..state.frame.size.y {
+        for x in 0..state.frame.size.x {
+            arr.push(state.frame[P2 { x, y }].r.clamp(0, 255) as u8);
+            arr.push(state.frame[P2 { x, y }].g.clamp(0, 255) as u8);
+            arr.push(state.frame[P2 { x, y }].b.clamp(0, 255) as u8);
+        }
+    }
+
+    arr
+}