1 files changed, 165 insertions, 0 deletions
diff --git a/old/bv1/codec/src/impls.rs b/old/bv1/codec/src/impls.rs
new file mode 100644
index 0000000..b4cc119
--- /dev/null
+++ b/old/bv1/codec/src/impls.rs
@@ -0,0 +1,165 @@
+use crate::{Frame, Pixel, Ref, View, P2};
+use std::ops::{Add, AddAssign, Index, IndexMut, Sub};
+
+#[cfg(feature = "parallel")]
+pub use rayon::join;
+#[cfg(not(feature = "parallel"))]
+pub fn join<A, B, RA, RB>(oper_a: A, oper_b: B) -> (RA, RB)
+where
+    A: FnOnce() -> RA + Send,
+    B: FnOnce() -> RB + Send,
+    RA: Send,
+    RB: Send,
+{
+    (oper_a(), oper_b())
+}
+
+impl Frame {
+    pub fn export(&self, view: View) -> Vec<Pixel> {
+        let mut o = vec![];
+        for y in view.a.y..view.b.y {
+            for x in view.a.x..view.b.x {
+                o.push(self[P2 { x, y }])
+            }
+        }
+        o
+    }
+    pub fn import(&mut self, view: View, mut source: &[Pixel]) {
+        for y in view.a.y..view.b.y {
+            for x in view.a.x..view.b.x {
+                self[P2 { x, y }] = source[0];
+                source = &source[1..];
+            }
+        }
+        assert_eq!(source.len(), 0)
+    }
+    pub fn new(size: P2) -> Self {
+        Self {
+            pixels: vec![Pixel::default(); size.area()],
+            size,
+        }
+    }
+}
+impl Ref {
+    #[inline]
+    pub fn apply<F: Fn(&mut Self)>(mut self, f: F) -> Self {
+        f(&mut self);
+        self
+    }
+}
+impl Pixel {
+    pub const BLACK: Pixel = Pixel { r: 0, g: 0, b: 0 };
+    pub const RED: Pixel = Pixel { r: 255, g: 0, b: 0 };
+    pub const GREEN: Pixel = Pixel { r: 0, g: 255, b: 0 };
+    pub const BLUE: Pixel = Pixel { r: 0, g: 0, b: 255 };
+}
+impl AddAssign for P2 {
+    fn add_assign(&mut self, rhs: Self) {
+        self.x += rhs.x;
+        self.y += rhs.y;
+    }
+}
+impl Add for Pixel {
+    type Output = Pixel;
+    #[inline]
+    fn add(self, rhs: Self) -> Self::Output {
+        Self {
+            r: self.r + rhs.r,
+            g: self.g + rhs.g,
+            b: self.b + rhs.b,
+        }
+    }
+}
+impl Sub for Pixel {
+    type Output = Pixel;
+    #[inline]
+    fn sub(self, rhs: Self) -> Self::Output {
+        Self {
+            r: self.r - rhs.r,
+            g: self.g - rhs.g,
+            b: self.b - rhs.b,
+        }
+    }
+}
+impl P2 {
+    pub const ZERO: P2 = P2 { x: 0, y: 0 };
+    pub const X: P2 = P2 { x: 1, y: 0 };
+    pub const Y: P2 = P2 { x: 0, y: 1 };
+
+    #[inline]
+    pub fn area(&self) -> usize {
+        (self.x * self.y) as usize
+    }
+}
+impl View {
+    #[inline]
+    pub fn all(b: P2) -> Self {
+        Self {
+            a: P2::default(),
+            b,
+        }
+    }
+    #[inline]
+    pub fn size(&self) -> P2 {
+        self.b - self.a
+    }
+}
+impl Add<P2> for View {
+    type Output = View;
+    #[inline]
+    fn add(self, rhs: P2) -> Self::Output {
+        View {
+            a: self.a + rhs,
+            b: self.b + rhs,
+        }
+    }
+}
+impl Add for P2 {
+    type Output = P2;
+    #[inline]
+    fn add(self, rhs: Self) -> Self::Output {
+        Self {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+impl Sub for P2 {
+    type Output = P2;
+    #[inline]
+    fn sub(self, rhs: Self) -> Self::Output {
+        Self {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
+impl Index<P2> for Frame {
+    type Output = Pixel;
+    #[inline]
+    fn index(&self, P2 { x, y }: P2) -> &Self::Output {
+        &self
+            .pixels
+            .get(x as usize + (y as usize * self.size.x as usize))
+            .unwrap_or(&Pixel { r: 0, g: 0, b: 0 })
+    }
+}
+impl IndexMut<P2> for Frame {
+    #[inline]
+    fn index_mut(&mut self, P2 { x, y }: P2) -> &mut Self::Output {
+        &mut self.pixels[x as usize + (y as usize * self.size.x as usize)]
+    }
+}
+
+pub trait ToArray {
+    type Output;
+    fn to_array(self) -> [Self::Output; 2];
+}
+impl<A> ToArray for (A, A) {
+    type Output = A;
+    #[inline]
+    fn to_array(self) -> [A; 2] {
+        [self.0, self.1]
+    }
+}