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void | ClearBlock (const CodeBlock &code_block, CoeffArray &coeff_data) |
| When coding a skipped block, propegate the predicted values for future non skipped blocks.
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CoeffType | GetPrediction (const CoeffArray &data, const int xpos, const int ypos) const |
| Prediction of a DC value from its previously coded neighbours.
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void | DecodeCoeffBlock (const CodeBlock &code_block, CoeffArray &out_data) |
| Decode codeblock of coefficients and perform DC prediction.
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void | CodeVal (CoeffArray &in_data, const int xpos, const int ypos, const CoeffType val) |
| Code an individual quantised value and perform inverse-quantisation.
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void | DecodeVal (CoeffArray &out_data, const int xpos, const int ypos) |
| Decode an individual quantised value and perform inverse-quantisation.
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void | CodeQuantIndexOffset (const int offset) |
| Encode the offset for a code block quantiser.
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int | DecodeQuantIndexOffset () |
| Decode the offset for a code block quantiser.
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void | SetToVal (const CodeBlock &code_block, CoeffArray &coeff_data, const CoeffType val) |
| Set a code block area to a given value.
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virtual void | DoWorkCode (CoeffArray &in_data) |
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virtual void | DoWorkDecode (CoeffArray &out_data) |
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virtual void | CodeCoeffBlock (const CodeBlock &code_block, CoeffArray &in_data) |
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virtual void | DecodeCoeff (CoeffArray &in_data, const int xpos, const int ypos) |
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int | ChooseFollowContext (const int bin_number) const |
| A function for choosing the context for "follow bits".
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int | ChooseInfoContext () const |
| A function for choosing the context for "information bits".
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int | ChooseSignContext (const CoeffArray &data, const int xpos, const int ypos) const |
| A function for choosing the context for sign bits.
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bool | m_is_intra |
| Flag indicating whether the band comes from an intra picture.
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int | m_bnum |
| variables
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const Subband | m_node |
| the subband being coded
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int | m_last_qf_idx |
| the quantisation index of the last codeblock
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int | m_qf |
| quantisation value
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CoeffType | m_offset |
| reconstruction point
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bool | m_nhood_nonzero |
| True if neighbours non-zero.
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Subband | m_pnode |
| the parent subband
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int | m_pxpos |
| position of the parent coefficient
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int | m_pypos |
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bool | m_parent_notzero |
| True if the parent of a coeff is not zero.
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A class specially for coding the DC subband of Intra frames, using intra-band prediction of coefficients.