add 16 wide, 2 deep tree with RLE at the end. turns out to be worse than other algs

encoder/src/main.rs

@@ -1,4 +1,4 @@
-use std::{fs::File, io::Write};
+use std::{fs::File, io::{stdout, Write}};
 
 use enum_map::{Enum, EnumMap};
 use num_enum::TryFromPrimitive;
@@ -22,6 +22,7 @@ const LOSSLESS_ENCODINGS: &[FrameEncoder] = &[
 	// enc::rle_diff_vertical,
 	// enc::bg_strips_horizontal_16, // only works for the tiny display
 	enc::bg_strips_horizontal_24, // intended for the 240x320 display
+	// enc::tree_16,// turns out to be useless
 ];
 const LOSSY_ENCODINGS: &[FrameEncoderLossy] = &[
 	enc::fill_white,
@@ -101,7 +102,11 @@ fn main() {
 fn encode(frames: &[Frame]) -> Vec<u8> {
 	let mut out = Vec::new();
 	let mut last_frame = FRAME_0;
+	print!("encoding frames");
+	let frame_count = frames.len();
 	for (_i, frame) in frames.iter().enumerate() {
+		print!("\rencoding frame {_i} of {frame_count}");
+		stdout().flush().unwrap();
 		let mut options = Vec::new();
 		for encode in LOSSLESS_ENCODINGS.iter() {
 			let encoded = encode(&last_frame, frame);
@@ -157,6 +162,7 @@ fn encode(frames: &[Frame]) -> Vec<u8> {
 		out.extend_from_slice(&best_encoding);
 		last_frame = *frame;
 	}
+	println!();
 	out
 }
 
@@ -184,6 +190,7 @@ enum Encoding {
 	// CellDiff4VH,
 	CellDiff4VV,
 	// CellDiff4VV_large,
+	Tree16,
 }
 
 fn get_matching_decoder(encoding: Encoding) -> FrameDecoder {
@@ -208,6 +215,7 @@ fn get_matching_decoder(encoding: Encoding) -> FrameDecoder {
 		// Encoding::CellDiff4HV => todo!(),
 		// Encoding::CellDiff4VH => todo!(),
 		Encoding::CellDiff4VV => dec::cell_diff_4_vertical,
+		Encoding::Tree16 => dec::tree_16,
 	}
 }