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Code Issues Projects Releases Packages Wiki Activity Actions 9

LibVideo/VP9: Use a struct for block context to keep between frames

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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.
This commit is contained in:
Zaggy1024 2022-11-20 12:42:17 -06:00 • committed by Andreas Kling
commit 4a4aa697d9
Notes: sideshowbarker 2024-07-17 03:55:28 +09:00
4 changed files with 75 additions and 28 deletions
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11
Userland/Libraries/LibVideo/VP9/Parser.cpp
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@ -494,9 +494,8 @@ void Parser::setup_past_independence()
m_feature_enabled[i][j] = false;
}
}
m_previous_block_contexts.reset();
m_segmentation_abs_or_delta_update = false;
m_prev_segment_ids.clear_with_capacity();
m_prev_segment_ids.resize_and_keep_capacity(m_mi_rows * m_mi_cols);
m_loop_filter_delta_enabled = true;
m_loop_filter_ref_deltas[IntraFrame] = 1;
m_loop_filter_ref_deltas[LastFrame] = 0;
@ -1111,7 +1110,7 @@ u8 Parser::get_segment_id()
u8 segment = 7;
for (size_t y = 0; y < ymis; y++) {
for (size_t x = 0; x < xmis; x++) {
segment = min(segment, m_prev_segment_ids[get_image_index(m_mi_row + y, m_mi_col + x)]);
segment = min(segment, m_previous_block_contexts.index_at(m_mi_row + y, m_mi_col + x));
}
}
return segment;
@ -1498,10 +1497,10 @@ void Parser::add_mv_ref_list(u8 ref_list)
void Parser::get_block_mv(u32 candidate_row, u32 candidate_column, u8 ref_list, bool use_prev)
{
auto index = get_image_index(candidate_row, candidate_column);
if (use_prev) {
m_candidate_mv[ref_list] = m_prev_mvs[index][ref_list];
m_candidate_frame[ref_list] = m_prev_ref_frames[index][ref_list];
auto const& prev_context = m_previous_block_contexts.at(candidate_row, candidate_column);
m_candidate_mv[ref_list] = prev_context.primary_motion_vector_pair[ref_list];
m_candidate_frame[ref_list] = prev_context.ref_frames[ref_list];
} else {
auto const& current_context = m_frame_block_contexts.at(candidate_row, candidate_column);
m_candidate_mv[ref_list] = current_context.primary_motion_vector_pair()[ref_list];