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-rw-r--r--evc/src/format/ser.rs335
1 files changed, 0 insertions, 335 deletions
diff --git a/evc/src/format/ser.rs b/evc/src/format/ser.rs
deleted file mode 100644
index f063377..0000000
--- a/evc/src/format/ser.rs
+++ /dev/null
@@ -1,335 +0,0 @@
-use anyhow::Context;
-use std::io::{Read, Write};
-
-use crate::helpers::{matrix::Mat2, vector::Vec2};
-
-pub trait Sink {
- fn put<V: Ser>(&mut self, value: V) -> anyhow::Result<()>;
-}
-pub trait Source {
- fn get<V: Ser>(&mut self) -> anyhow::Result<V>;
-}
-
-impl<T: Write> Sink for T {
- fn put<V: Ser>(&mut self, value: V) -> anyhow::Result<()> {
- value.write(self)
- }
-}
-impl<T: Read> Source for T {
- fn get<V: Ser>(&mut self) -> anyhow::Result<V> {
- V::read(self)
- }
-}
-
-pub trait Ser: Sized {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()>;
- fn read(source: &mut impl Read) -> anyhow::Result<Self>;
-}
-
-impl<A: Ser, B: Ser> Ser for (A, B) {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- self.0.write(sink).context("first tuple field")?;
- self.1.write(sink).context("second tuple field")?;
- Ok(())
- }
-
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- Ok((A::read(source)?, B::read(source)?))
- }
-}
-impl<A: Ser, B: Ser, C: Ser> Ser for (A, B, C) {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- self.0.write(sink).context("first tuple field")?;
- self.1.write(sink).context("second tuple field")?;
- self.2.write(sink).context("third tuple field")?;
- Ok(())
- }
-
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- Ok((A::read(source)?, B::read(source)?, C::read(source)?))
- }
-}
-impl<A: Ser, B: Ser, C: Ser, D: Ser> Ser for (A, B, C, D) {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- self.0.write(sink).context("first tuple field")?;
- self.1.write(sink).context("second tuple field")?;
- self.2.write(sink).context("third tuple field")?;
- self.3.write(sink).context("fourth tuple field")?;
- Ok(())
- }
-
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- Ok((
- A::read(source)?,
- B::read(source)?,
- C::read(source)?,
- D::read(source)?,
- ))
- }
-}
-
-impl<A: Ser, const N: usize> Ser for [A; N] {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- for e in self {
- e.write(sink).context("some array")?;
- }
- Ok(())
- }
-
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut k: [A; N] = unsafe { std::mem::zeroed() };
- for i in 0..N {
- k[i] = A::read(source)?;
- }
- Ok(k)
- }
-}
-
-impl<T: Ser> Ser for Vec<T> {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- self.len().write(sink)?;
- for e in self {
- e.write(sink).context("some vec")?;
- }
- Ok(())
- }
-
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut v = vec![];
- for _ in 0..usize::read(source)? {
- v.push(T::read(source)?)
- }
- Ok(v)
- }
-}
-
-pub trait ConstSizeSerExt: Sized {
- fn write_const_size(&self, sink: &mut impl Write, size: usize) -> anyhow::Result<()>;
- fn read_const_size(source: &mut impl Read, size: usize) -> anyhow::Result<Self>;
-}
-impl<T: Ser> ConstSizeSerExt for Vec<T> {
- fn write_const_size(&self, sink: &mut impl Write, size: usize) -> anyhow::Result<()> {
- assert_eq!(self.len(), size);
- for e in self {
- e.write(sink).context("some const-size vec")?;
- }
- Ok(())
- }
-
- fn read_const_size(source: &mut impl Read, size: usize) -> anyhow::Result<Self> {
- let mut v = vec![];
- for _ in 0..size {
- v.push(T::read(source)?)
- }
- Ok(v)
- }
-}
-
-impl Ser for u8 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink.write_all(&[*self]).context("write u8")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 1];
- source.read_exact(&mut buf)?;
- Ok(buf[0])
- }
-}
-impl Ser for i8 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 1]>(self) })
- .context("write i8")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 1];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for u16 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 2]>(self) })
- .context("write u16")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 2];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for u32 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 4]>(self) })
- .context("write u32")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 4];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for u64 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 8]>(self) })
- .context("write u64")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 8];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for usize {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 8]>(self) })
- .context("write usize")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 8];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for isize {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 8]>(self) })
- .context("write isize")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 8];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for f32 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 4]>(self) })
- .context("write f32")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 4];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-impl Ser for f64 {
- fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
- Ok(sink
- .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 8]>(self) })
- .context("write f64")?)
- }
- fn read(source: &mut impl Read) -> anyhow::Result<Self> {
- let mut buf = [0u8; 8];
- source.read_exact(&mut buf)?;
- Ok(unsafe { std::mem::transmute_copy(&buf) })
- }
-}
-
-impl<T: Ser + Copy> Ser for Vec2<T> {
- fn write(&self, sink: &mut impl std::io::Write) -> anyhow::Result<()> {
- sink.put((self.x, self.y))
- }
-
- fn read(source: &mut impl std::io::Read) -> anyhow::Result<Self> {
- let (x, y) = source.get()?;
- Ok(Vec2 { x, y })
- }
-}
-impl<T: Ser + Copy> Ser for Mat2<T> {
- fn write(&self, sink: &mut impl std::io::Write) -> anyhow::Result<()> {
- sink.put((self.a, self.b, self.c, self.d))
- }
-
- fn read(source: &mut impl std::io::Read) -> anyhow::Result<Self> {
- let (a, b, c, d) = source.get()?;
- Ok(Mat2 { a, b, c, d })
- }
-}
-
-pub struct Small<T>(pub T);
-impl Ser for Small<Vec2<isize>> {
- fn write(&self, sink: &mut impl std::io::Write) -> anyhow::Result<()> {
- sink.put((self.0.x as i8, self.0.y as i8))
- }
-
- fn read(source: &mut impl std::io::Read) -> anyhow::Result<Self> {
- let (x, y): (i8, i8) = source.get()?;
- Ok(Small(Vec2 {
- x: x as isize,
- y: y as isize,
- }))
- }
-}
-
-pub fn map_scalar8(v: i8) -> f32 {
- match v {
- 0 => 0.0,
- x if x > 0 => 2f32.powf((x as f32).abs() / 2.0 - 2.0),
- x => -2f32.powf((-x as f32).abs() / 2.0 - 2.0),
- }
-}
-// const SCALAR8: [f32; 256] = gen_scalar8_lookup();
-// const fn gen_scalar8_lookup() -> [f32; 256] {
-// let mut a = [0.0; 256];
-// let mut i = 0usize;
-// while i < 256 {
-// a[i as usize] = if i == 0 {
-// 0.0
-// } else {
-// let x = i as i8 as f32;
-// x.signum() * 2f32.powf(x.abs() / 2.0 - 2.0)
-// };
-// i += 1;
-// }
-// a
-// }
-
-#[cfg(test)]
-mod test {
- use super::{Ser, Sink};
- use crate::format::header::Header;
- use crate::{format::ser::Source, helpers::vector::Vec2};
- use std::fmt::Debug;
- use std::io::Cursor;
-
- fn test_ser<T: PartialEq + Ser + Debug + Clone>(value: T) {
- let mut buf = vec![];
- Cursor::new(&mut buf).put(value.clone()).unwrap();
- assert_eq!(value, Cursor::new(&mut buf).get().unwrap());
- }
-
- #[test]
- fn simple() {
- let mut buf = vec![];
- Cursor::new(&mut buf).put(10usize).unwrap();
- assert_eq!(10usize, Cursor::new(&mut buf).get().unwrap());
- }
- #[test]
- fn tuple() {
- let mut buf = vec![];
- Cursor::new(&mut buf).put((10usize, 5u8, 3u16)).unwrap();
- assert_eq!((10usize, 5u8, 3u16), Cursor::new(&mut buf).get().unwrap());
- }
- #[test]
- fn header() {
- test_ser(Header {
- frame_count: 123,
- resolution: Vec2 { x: 13, y: 37 },
- });
- }
- #[test]
- fn vec() {
- test_ser(vec![1u16, 2, 3, 4]);
- }
- #[test]
- fn array() {
- test_ser([1u16, 2, 3, 4]);
- }
-}
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