#include <stdio.h>
#include <stdint.h>

// Helper function to print binary representation
void print_binary(uint16_t value, int bits) {
    for (int i = bits - 1; i >= 0; i--) {
        printf("%c", (value & (1 << i)) ? '1' : '0'); // Print '1' if bit is set, otherwise '0'
    }
}

// Simulate reading bits in big-endian order
uint32_t read_bits(uint16_t *bit_buffer, int *bits_left, int num_bits) {
    printf("bit_buffer: 0b");
    print_binary(*bit_buffer, 16); // Print 16 bits
    printf("\n");
    uint32_t value = *bit_buffer >> (*bits_left - num_bits); // Extract the top `num_bits` bits
    *bits_left -= num_bits;                                // Reduce the count of available bits
    *bit_buffer &= (1 << *bits_left) - 1;                  // Clear the extracted bits
    return value;                                          // Return the extracted value
}

int main() {
    uint16_t bit_buffer = 0b1101011011110010; // Example big-endian buffer
    int bits_left = 16; // Total number of bits available in the buffer

    printf("Initial bit_buffer: 0b");
    print_binary(bit_buffer, 16); // Print 16 bits
    printf("\n");

    // Read 5 bits
    int num_bits = 5;
    uint32_t result = read_bits(&bit_buffer, &bits_left, num_bits);
    printf("Read %d bits: 0b", num_bits);
    print_binary(result, num_bits); // Print 5 bits
    printf("\n");
    printf("Remaining bit_buffer: 0b");
    print_binary(bit_buffer, bits_left); // Print remaining bits
    printf(", bits_left: %d\n", bits_left);

    // Read another 6 bits
    num_bits = 6;
    result = read_bits(&bit_buffer, &bits_left, num_bits);
    printf("Read %d bits: 0b", num_bits);
    print_binary(result, num_bits); // Print 6 bits
    printf("\n");
    printf("Remaining bit_buffer: 0b");
    print_binary(bit_buffer, bits_left); // Print remaining bits
    printf(", bits_left: %d\n", bits_left);

    // Read the remaining 5 bits
    num_bits = 5;
    result = read_bits(&bit_buffer, &bits_left, num_bits);
    printf("Read %d bits: 0b", num_bits);
    print_binary(result, num_bits); // Print 5 bits
    printf("\n");
    printf("Remaining bit_buffer: 0b");
    print_binary(bit_buffer, bits_left); // Print remaining bits
    printf(", bits_left: %d\n", bits_left);

    return 0;
}