# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

# dirac::InputStreamBuffer Class Reference

Input Stream Buffer Class.

`#include <dirac_cppparser.h>`

List of all members.

## Public Member Functions

- InputStreamBuffer ()
    Constructor.
- ~InputStreamBuffer ()
    Destructor.
- std::ios::pos_type Rewind ()
    Rewind buffer to start of data.
- std::ios::pos_type Seek (std::ios::pos_type bytes, std::ios::seekdir pos=std::ios::cur)
    Seek to position specified by bytes offset from pos.
- std::ios::pos_type Tell ()
    Return the current read position in the buffer.
- void Copy (char *start, int bytes)
    Copy data into buffer.
- void PurgeProcessedData ()
    Delete all processed data from buffer.

## Private Member Functions

- InputStreamBuffer (const InputStreamBuffer &inbuf)
    Private body-less copy constructor.
- InputStreamBuffer & operator= (const InputStreamBuffer &inbuf)
    Private body-less assignment operator.

## Private Attributes

- char * m_chunk_buffer
    Buffere.

## Static Private Attributes

- static const int m_buffer_size = 1232896
    Buffer size.

## Constructor & Destructor Documentation

dirac::InputStreamBuffer::InputStreamBuffer | ( |  | ) |

dirac::InputStreamBuffer::~InputStreamBuffer | ( |  | ) |

dirac::InputStreamBuffer::InputStreamBuffer | ( | const InputStreamBuffer & | inbuf | ) | `[private]`

## Member Function Documentation

void dirac::InputStreamBuffer::Copy | ( | char * | start,
|  | int | bytes |
| ) |  |  |

Copy take

Parameters:

  | start | memory area start
  | bytes | number of bytes to copy starting from start

InputStreamBuffer& dirac::InputStreamBuffer::operator= | ( | const InputStreamBuffer & | inbuf | ) | `[private]`

void dirac::InputStreamBuffer::PurgeProcessedData | ( |  | ) |

std::ios::pos_type dirac::InputStreamBuffer::Rewind | ( |  | ) |

std::ios::pos_type dirac::InputStreamBuffer::Seek | ( | std::ios::pos_type | bytes,
|  | std::ios::seekdir | pos = `std::ios::cur` |
| ) |  |  |

Seek takes

Parameters:

  | bytes | offset in bytes
  | pos | the position from which the offset is applied

std::ios::pos_type dirac::InputStreamBuffer::Tell | ( |  | ) |

## Member Data Documentation

const int dirac::InputStreamBuffer::m_buffer_size = 1232896`[static, private]`

char* dirac::InputStreamBuffer::m_chunk_buffer`[private]`

The documentation for this class was generated from the following file:

- dirac_cppparser.h

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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