Dirac - A Video Codec
Created by the British Broadcasting Corporation.
dirac::BandCodec Class Reference
A general class for coding and decoding wavelet subband data.
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#include <band_codec.h>
Inheritance diagram for dirac::BandCodec:
[legend]Collaboration diagram for dirac::BandCodec:
[legend]List of all members.Public Member Functions
Protected Member Functions
- void CodeVal (PicArray &in_data, const int xpos, const int ypos, const ValueType val)
- Code an individual quantised value and perform inverse-quantisation.
- void DecodeVal (PicArray &out_data, const int xpos, const int ypos)
- Decode an individual quantised value and perform inverse-quantisation.
- void SetToVal (const CodeBlock &code_block, PicArray &pic_data, const ValueType val)
- Set a code block area to a given value.
Protected Attributes
Private Member Functions
Detailed Description
A general class for coding and decoding wavelet subband data, deriving from the abstract ArithCodec class.
Constructor & Destructor Documentation
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Creates a BandCodec object to encode subband data - Parameters:
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| bits_out | the output for the encoded bits |
| number_of_contexts | the number of contexts used in the encoding process |
| band_list | the set of all the subbands |
| band_num | the number of the subband being coded |
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Creates a BandCodec object to decode subband data. - Parameters:
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| bits_in | the input for the encoded bits |
| number_of_contexts | the number of contexts used in the decoding process |
| band_list | the set of all the subbands |
| band_num | the number of the subband being decoded |
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dirac::BandCodec::BandCodec |
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const BandCodec & |
cpy |
) |
[private] |
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Member Function Documentation
int dirac::BandCodec::ChooseContext |
( |
const int |
bin_number |
) |
const [private] |
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int dirac::BandCodec::ChooseSignContext |
( |
const PicArray & |
data, |
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const int |
xpos, |
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const int |
ypos |
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) |
const [private] |
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virtual void dirac::BandCodec::CodeCoeffBlock |
( |
const CodeBlock & |
code_block, |
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PicArray & |
in_data |
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) |
[private, virtual] |
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void dirac::BandCodec::CodeVal |
( |
PicArray & |
in_data, |
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const int |
xpos, |
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const int |
ypos, |
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const ValueType |
val |
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) |
[protected] |
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virtual void dirac::BandCodec::DecodeCoeffBlock |
( |
const CodeBlock & |
code_block, |
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PicArray & |
out_data |
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) |
[private, virtual] |
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void dirac::BandCodec::DecodeVal |
( |
PicArray & |
out_data, |
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const int |
xpos, |
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const int |
ypos |
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) |
[protected] |
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virtual void dirac::BandCodec::DoWorkCode |
( |
PicArray & |
in_data |
) |
[private, virtual] |
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virtual void dirac::BandCodec::DoWorkDecode |
( |
PicArray & |
out_data |
) |
[private, virtual] |
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void dirac::BandCodec::InitContexts |
( |
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) |
[virtual] |
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void dirac::BandCodec::ResetAll |
( |
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) |
[private, virtual] |
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Member Data Documentation
The documentation for this class was generated from the following file:
© 2004 British Broadcasting Corporation.
Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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