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LibVideo/VP9: Implement parsing Token and MoreCoefs trees

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These elements were being used in the new tokens implementation, so
support for them in the TreeParser has been added.

Additionally, this uncovered a bug where the nonzero contexts were
being cleared with the wrong size.
This commit is contained in:
FalseHonesty 2021-06-27 11:49:46 -04:00 • committed by Andreas Kling
parent aa27ca1b16
commit 074fbd1b06
3 changed files with 86 additions and 10 deletions
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17
Userland/Libraries/LibVideo/VP9/TreeParser.h
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@ -57,9 +57,16 @@ public:
m_idy = idy;
}
void set_band(u8 band) { m_band = band; }
void set_tokens_variables(u8 band, u32 c, u32 plane, TXSize tx_size, u32 pos)
{
m_band = band;
m_c = c;
m_plane = plane;
m_tx_size = tx_size;
m_pos = pos;
}
void set_more_coefs_variables(u32 start_x, u32 start_y)
void set_start_x_and_y(u32 start_x, u32 start_y)
{
m_start_x = start_x;
m_start_y = start_y;
@ -83,6 +90,8 @@ private:
u8 calculate_tx_size_probability(u8 node);
u8 calculate_inter_mode_probability(u8 node);
u8 calculate_interp_filter_probability(u8 node);
u8 calculate_token_probability(u8 node);
u8 calculate_more_coefs_probability();
Parser& m_decoder;
// m_ctx is a member variable because it is required for syntax element counting (section 9.3.4)
@ -95,6 +104,10 @@ private:
u8 m_band { 0 };
u32 m_start_x { 0 };
u32 m_start_y { 0 };
u32 m_c { 0 };
u32 m_plane { 0 };
TXSize m_tx_size;
u32 m_pos { 0 };
};
}