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LibVideo/VP9: Use a struct for block context to keep between frames
There are three fields that we need to store from FrameBlockContext to keep between frames, which are used to parse for those same fields for the next frame.
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4 changed files with 75 additions and 28 deletions
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@ -259,7 +259,6 @@ private:
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ReferenceFramePair m_comp_var_ref;
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// FIXME: Use Array<MotionVectorPair, 4> instead.
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Array<Array<MotionVector, 4>, 2> m_block_mvs;
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Vector<u8> m_prev_segment_ids;
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// FIXME: From spec: NOTE – We are using a 2D array to store the SubModes for clarity. It is possible to reduce memory
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// consumption by only storing one intra mode for each 8x8 horizontal and vertical position, i.e. to use two 1D
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@ -273,8 +272,7 @@ private:
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u8 m_ref_mv_count { 0 };
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MotionVectorPair m_ref_list_mv;
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bool m_use_prev_frame_mvs;
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Vector<ReferenceFramePair> m_prev_ref_frames;
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Vector<MotionVectorPair> m_prev_mvs;
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Vector2D<PersistentBlockContext> m_previous_block_contexts;
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// Indexed by ReferenceFrame enum.
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u8 m_mode_context[4] { INVALID_CASE };
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