From 11b78570656bd0ca67594472765fc629aa25fd25 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Thu, 9 Mar 2023 19:04:33 +0100
Subject: move all logic to codec crate

---
 lvc/codec/src/encode.rs | 70 ++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 66 insertions(+), 4 deletions(-)

(limited to 'lvc/codec/src/encode.rs')

diff --git a/lvc/codec/src/encode.rs b/lvc/codec/src/encode.rs
index 030e882..d612daf 100644
--- a/lvc/codec/src/encode.rs
+++ b/lvc/codec/src/encode.rs
@@ -1,23 +1,85 @@
 use crate::diff::{diff, pixel_diff};
+use crate::huff::write_huff;
 use crate::split::split;
-use crate::{Block, Frame, Pixel, Ref, View, P2};
+use crate::{decode::decode_block, Block, Frame, Pixel, Ref, View, P2};
+use std::io::{BufReader, BufWriter, Read, Write};
+use std::time::Instant;
 
 #[derive(Debug, Clone)]
 pub struct EncodeConfig {
     pub threshold: f32,
     pub max_block_size: usize,
     pub attention_split: u32,
+    pub keyframe_interval: usize,
 }
 
-pub fn encode(last_frame: &Frame, frame: &Frame, view: View, config: &EncodeConfig) -> Block {
+pub fn encode(
+    config: EncodeConfig,
+    size: P2,
+    input: impl Read,
+    output: impl Write,
+) -> std::io::Result<()> {
+    let mut input = BufReader::new(input);
+    let mut output = BufWriter::new(output);
+
+    let mut last_frame = Frame::new(size);
+    for frame_number in 0.. {
+        let mut frame = Frame::read(&mut input, size)?;
+
+        let mut config = config.clone();
+        if frame_number % config.keyframe_interval != 0 {
+            config.threshold = std::f32::INFINITY;
+        }
+
+        let t = Instant::now();
+        let b: Block = encode_block(&last_frame, &frame, View::all(size), &config);
+        let time_encode = t.elapsed();
+
+        let t = Instant::now();
+        decode_block(&last_frame, &mut frame, View::all(size), &b);
+        last_frame = frame;
+        let time_decode = t.elapsed();
+
+        if true {
+            let mut buf = vec![];
+            let mut bufw = std::io::Cursor::new(&mut buf);
+            b.write(&mut bufw)?;
+            drop(bufw);
+            let t = Instant::now();
+            let bits_raw = buf.len() * 8;
+            let bits_huff = write_huff(&buf, &mut output)?;
+            let time_huff = t.elapsed();
+            drop(buf);
+
+            eprintln!(
+                "frame {frame_number}: {:?}",
+                time_decode + time_huff + time_encode
+            );
+            eprintln!(
+                "\tencode {time_encode:?} ({:.2}%)",
+                (bits_raw as f32 / (size.area() * 24) as f32) * 100.0
+            );
+            eprintln!(
+                "\thuff {time_huff:?} ({:.2}%)",
+                (bits_huff as f32 / bits_raw as f32) * 100.0
+            );
+            eprintln!("\tdecode {time_decode:?}");
+        } else {
+            b.write(&mut output)?;
+        }
+    }
+    Ok(())
+}
+
+pub fn encode_block(last_frame: &Frame, frame: &Frame, view: View, config: &EncodeConfig) -> Block {
     let view_area = view.size().area();
     if view_area > config.max_block_size
         || (view_area > 64 && attention(frame, view) > config.attention_split)
     {
         let [av, bv] = split(view);
         let (ab, bb) = rayon::join(
-            || Box::new(encode(last_frame, frame, av, config)),
-            || Box::new(encode(last_frame, frame, bv, config)),
+            || Box::new(encode_block(last_frame, frame, av, config)),
+            || Box::new(encode_block(last_frame, frame, bv, config)),
         );
         return Block::Split(ab, bb);
     }
-- 
cgit v1.2.3-70-g09d2