Method readBits

src/demux/exp-golomb.js:53–77

(bits)

    }

    readBits(bits) {
        if (bits > 32)
            throw new InvalidArgumentException('ExpGolomb: readBits() bits exceeded max 32bits!');

        if (bits <= this._current_word_bits_left) {
            let result = this._current_word >>> (32 - bits);
            this._current_word <<= bits;
            this._current_word_bits_left -= bits;
            return result;
        }

        let result = this._current_word_bits_left ? this._current_word : 0;
        result = result >>> (32 - this._current_word_bits_left);
        let bits_need_left = bits - this._current_word_bits_left;

        this._fillCurrentWord();
        let bits_read_next = Math.min(bits_need_left, this._current_word_bits_left);

        let result2 = this._current_word >>> (32 - bits_read_next);
        this._current_word <<= bits_read_next;
        this._current_word_bits_left -= bits_read_next;

        result = (result << bits_read_next) | result2;
        return result;
    }

    readBool() {
        return this.readBits(1) === 1;