import binascii

def image_to_binary(image_path):
    """将图片文件转换为二进制数据"""
    with open(image_path, 'rb') as file:
        return file.read()

def binary_to_image(binary_data, output_path):
    """将二进制数据保存为图片文件"""
    with open(output_path, 'wb') as file:
        file.write(binary_data)

def binary_to_hex(binary_data):
    """将二进制数据转换为十六进制字符串"""
    return binascii.hexlify(binary_data).decode('utf-8')

def hex_to_binary(hex_string):
    """将十六进制字符串转换回二进制数据"""
    return binascii.unhexlify(hex_string)

# 使用示例
if __name__ == "__main__":
    # 读取图片并转换为二进制
    binary_data = image_to_binary('./tcp_data/VDES报文传输的图片.jpg')
    print(f"原始图片大小: {len(binary_data)} 字节")
    
    # 转换为十六进制字符串
    hex_data = binary_to_hex(binary_data)
    print(f"十六进制表示长度: {len(hex_data)} 字符")
    print(f"十六进制预览: {hex_data}...")
    
    # 转换回二进制
    restored_binary = hex_to_binary(hex_data)
    
    # 保存回图片文件
    # binary_to_image(restored_binary, 'output.jpg')
    # print("图片已成功转换并保存为 output.jpg")