| // Copyright (C) 2003 Davis E. King ([email protected]) | |
| // License: Boost Software License See LICENSE.txt for the full license. | |
| namespace dlib | |
| { | |
| class bit_stream_kernel_1 | |
| { | |
| /*! | |
| INITIAL VALUE | |
| write_mode == false | |
| read_mode == false | |
| CONVENTION | |
| write_mode == is_in_write_mode() | |
| read_mode == is_in_read_mode() | |
| if (write_mode) | |
| { | |
| osp == pointer to an ostream object | |
| buffer == the low order bits of buffer are the bits to be | |
| written | |
| buffer_size == the number of low order bits in buffer that are | |
| bits that should be written | |
| the lowest order bit is the last bit entered by the user | |
| } | |
| if (read_mode) | |
| { | |
| isp == pointer to an istream object | |
| buffer == the high order bits of buffer are the bits | |
| waiting to be read by the user | |
| buffer_size == the number of high order bits in buffer that | |
| are bits that are waiting to be read | |
| the highest order bit is the next bit to give to the user | |
| } | |
| !*/ | |
| public: | |
| bit_stream_kernel_1 ( | |
| ) : | |
| write_mode(false), | |
| read_mode(false) | |
| {} | |
| virtual ~bit_stream_kernel_1 ( | |
| ) | |
| {} | |
| void clear ( | |
| ); | |
| void set_input_stream ( | |
| std::istream& is | |
| ); | |
| void set_output_stream ( | |
| std::ostream& os | |
| ); | |
| void close ( | |
| ); | |
| inline bool is_in_write_mode ( | |
| ) const; | |
| inline bool is_in_read_mode ( | |
| ) const; | |
| inline void write ( | |
| int bit | |
| ); | |
| bool read ( | |
| int& bit | |
| ); | |
| void swap ( | |
| bit_stream_kernel_1& item | |
| ); | |
| private: | |
| // member data | |
| std::istream* isp; | |
| std::ostream* osp; | |
| bool write_mode; | |
| bool read_mode; | |
| unsigned char buffer; | |
| unsigned short buffer_size; | |
| // restricted functions | |
| bit_stream_kernel_1(bit_stream_kernel_1&); // copy constructor | |
| bit_stream_kernel_1& operator=(bit_stream_kernel_1&); // assignment operator | |
| }; | |
| inline void swap ( | |
| bit_stream_kernel_1& a, | |
| bit_stream_kernel_1& b | |
| ); | |
| // ---------------------------------------------------------------------------------------- | |
| } | |