Forego phone-sized floats for now

src/decode_tile.rs

@@ -11,7 +11,7 @@ pub fn decode_tile<R: Read>(
 
     for _ in 0..quality {
         let ix = reader.read_u8()?;
-        let val = decode_value(reader.read_u8()?);
+        let val = decode_value(reader.read_u16()?);
         coefs[ix as usize] = val;
     }
 
@@ -48,7 +48,9 @@ pub fn decode_tile<R: Read>(
     Ok(())
 }
 
-pub fn decode_value(enc: u8) -> i32 {
+pub fn decode_value(enc: u16) -> i32 {
+    return (enc as i16) as i32 * 16;
+    /*
     // mu law
     let sign = enc & 0x80 != 0;
     let exponent = (enc >> 4) & 0x7;
@@ -59,4 +61,5 @@ pub fn decode_value(enc: u8) -> i32 {
 
     // unquantize
     return value * 32;
+    */
 }

src/encode_tile.rs

@@ -57,12 +57,14 @@ pub fn encode_tile<W: Write>(
     for i in 0..quality {
         let ix = indices[i as usize];
         writer.write_u8(ix as u8)?;
-        writer.write_u8(encode_value(coefs[ix]))?;
+        writer.write_u16(encode_value(coefs[ix]))?;
     };
     Ok(())
 }
 
-pub fn encode_value(value: i32) -> u8 {
+pub fn encode_value(value: i32) -> u16 {
+    return ((value / 16) as i16) as u16;
+    /*
     // quantize
     let value = value / 32;
 
@@ -101,4 +103,5 @@ mod test {
 
         canon == decode_value(encode_value(canon as i32))
     }
+    */
 }

src/main.rs

@@ -15,6 +15,7 @@ fn main() {
     run_for("lohikar".to_string());
     run_for("zonked".to_string());
     run_for("avatar2".to_string());
+    run_for("avatar2_small".to_string());
 }
 fn run_for(name: String) {
     let image = png_utils::load_image(