Method decode_value

nodedb-codec/src/gorilla.rs:267–291

(&mut self)

    }

    fn decode_value(&mut self) -> Result<u64, CodecError> {
        let bit = self.reader.read_bit()?;
        if !bit {
            return Ok(self.prev_value);
        }

        let bit2 = self.reader.read_bit()?;
        let xor = if !bit2 {
            let meaningful_bits = 64 - self.prev_leading - self.prev_trailing;
            let bits = self.reader.read_bits(meaningful_bits as usize)?;
            bits << self.prev_trailing
        } else {
            let leading = self.reader.read_bits(6)? as u8;
            let meaningful_bits = self.reader.read_bits(6)? as u8 + 1;
            let trailing = 64 - leading - meaningful_bits;
            let bits = self.reader.read_bits(meaningful_bits as usize)?;
            self.prev_leading = leading;
            self.prev_trailing = trailing;
            bits << trailing
        };

        let val = self.prev_value ^ xor;
        self.prev_value = val;
        Ok(val)
    }

    /// Decode all remaining samples.
    pub fn decode_all(&mut self) -> Vec<(i64, f64)> {