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LibVideo/VP9: Store color config in the frame context

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The color config is reused for most inter predicted frames, so we use a
struct ColorConfig to store the config from intra frames, and put it in
a field in Parser to copy from when an inter frame without color config
is encountered.
This commit is contained in:
Zaggy1024 2022-11-22 19:15:38 -06:00 • committed by Andreas Kling
parent 9f573264ea
commit 40bc987fe3
5 changed files with 232 additions and 226 deletions
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12
Userland/Libraries/LibVideo/VP9/Parser.h
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@ -57,7 +57,7 @@ private:
/* (6.2) Uncompressed Header Syntax */
DecoderErrorOr<FrameContext> uncompressed_header();
DecoderErrorOr<void> frame_sync_code();
DecoderErrorOr<void> color_config(FrameContext const&);
DecoderErrorOr<ColorConfig> parse_color_config(FrameContext const&);
DecoderErrorOr<void> set_frame_size_and_compute_image_size();
DecoderErrorOr<Gfx::Size<u32>> parse_frame_size();
DecoderErrorOr<Gfx::Size<u32>> parse_frame_size_with_refs();
@ -120,11 +120,9 @@ private:
DecoderErrorOr<void> read_mv(u8 ref);
DecoderErrorOr<i32> read_mv_component(u8 component);
DecoderErrorOr<bool> residual(BlockContext&, bool has_block_above, bool has_block_left);
TXSize get_uv_tx_size(BlockSubsize size);
BlockSubsize get_plane_block_size(u32 subsize, u8 plane);
DecoderErrorOr<bool> tokens(BlockContext&, size_t plane, u32 x, u32 y, TXSize tx_size, u32 block_index);
u32 const* get_scan(BlockContext const&, size_t plane, TXSize tx_size, u32 block_index);
DecoderErrorOr<i32> read_coef(Token token);
DecoderErrorOr<i32> read_coef(u8 bit_depth, Token token);
/* (6.5) Motion Vector Prediction */
void find_mv_refs(BlockContext&, ReferenceFrameType, i32 block);
@ -158,14 +156,10 @@ private:
bool m_refresh_frame_context { false };
bool m_frame_parallel_decoding_mode { false };
u8 m_frame_context_idx { 0 };
u8 m_bit_depth { 0 };
ColorSpace m_color_space;
ColorRange m_color_range;
bool m_subsampling_x { false };
bool m_subsampling_y { false };
bool m_is_first_compute_image_size_invoke { true };
Gfx::Size<u32> m_previous_frame_size { 0, 0 };
bool m_previous_show_frame { false };
ColorConfig m_previous_color_config;
InterpolationFilter m_interpolation_filter { 0xf };
u8 m_base_q_idx { 0 };
i8 m_delta_q_y_dc { 0 };