Class BitUnpacker

examples/common.cpp:154–184

};

class BitUnpacker {
    public:
        // Constructor
        BitUnpacker(int bits, std::ifstream& fo)
            : bits(bits), fo(fo), mask((1 << bits) - 1), current_value(0), current_bits(0) {}

        // Member function to pull a single value from the stream
        int pull() {
            while (current_bits < bits) {
                char buf;
                if (!fo.read(&buf, 1)) {
                    return {};  // returns empty optional indicating end of stream
                }
                uint8_t character = static_cast<uint8_t>(buf);
                current_value += character << current_bits;
                current_bits += 8;
            }

            int out = current_value & mask;
            current_value >>= bits;
            current_bits -= bits;
            return out;  // returns the extracted value
        }

    private:
        int bits;
        std::ifstream& fo;
        int mask;
        int current_value;
        int current_bits;
};

void write_encodec_header(std::ofstream & fo, uint32_t audio_length) {
    json metadata = {