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LibVideo/VP9: Implement more TreeParser probability calculations

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Now TreeParser has mostly complete probability calculation
implementations for all currently used syntax elements. Some of these
calculation methods aren't actually finished because they use data
we have yet to parse in the Decoder, but they're close to finished.
This commit is contained in:
FalseHonesty 2021-06-21 12:22:00 -04:00 • committed by Andreas Kling
parent f85f557a1f
commit e4f015ce3d
4 changed files with 407 additions and 23 deletions
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26
Userland/Libraries/LibVideo/VP9/TreeParser.h
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@ -47,13 +47,39 @@ public:
u8 select_tree_probability(SyntaxElementType type, u8 node);
void count_syntax_element(SyntaxElementType type, int value);
void set_default_intra_mode_variables(u8 idx, u8 idy)
{
m_idx = idx;
m_idy = idy;
}
private:
u8 calculate_partition_probability(u8 node);
u8 calculate_default_intra_mode_probability(u8 node);
u8 calculate_default_uv_mode_probability(u8 node);
u8 calculate_intra_mode_probability(u8 node);
u8 calculate_sub_intra_mode_probability(u8 node);
u8 calculate_uv_mode_probability(u8 node);
u8 calculate_segment_id_probability(u8 node);
u8 calculate_skip_probability();
u8 calculate_seg_id_predicted_probability();
u8 calculate_is_inter_probability();
u8 calculate_comp_mode_probability();
u8 calculate_comp_ref_probability();
u8 calculate_single_ref_p1_probability();
u8 calculate_single_ref_p2_probability();
u8 calculate_tx_size_probability(u8 node);
u8 calculate_inter_mode_probability(u8 node);
u8 calculate_interp_filter_probability(u8 node);
Decoder& m_decoder;
// m_ctx is a member variable because it is required for syntax element counting (section 9.3.4)
u8 m_ctx { 0 };
// These are variables necessary for parsing tree data, but aren't useful otherwise, so they're
// not stored in the Decoder itself.
u8 m_idx { 0 };
u8 m_idy { 0 };
};
}