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LibVideo/VP9: Make get_tile_offset static and remove magic numbers

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This can use the new utility functions for converting units now.
This commit is contained in:
Zaggy1024 2022-11-28 09:04:58 -06:00 committed by Andreas Kling
parent f5ea6c89df
commit b1c7bbc4ba
Notes: sideshowbarker 2024-07-17 03:52:50 +09:00 
Author: https://github.com/Zaggy1024
Commit: https://github.com/SerenityOS/serenity/commit/b1c7bbc4ba
Pull-request: https://github.com/SerenityOS/serenity/pull/16238
2 changed files with 7 additions and 8 deletions
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14
Userland/Libraries/LibVideo/VP9/Parser.cpp
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@ -845,6 +845,13 @@ DecoderErrorOr<u8> Parser::update_mv_prob(u8 prob)
return prob;
}
static u32 get_tile_offset(u32 tile_start, u32 frame_size_in_blocks, u32 tile_size_log2)
{
u32 superblocks = blocks_ceiled_to_superblocks(frame_size_in_blocks);
u32 offset = superblocks_to_blocks((tile_start * superblocks) >> tile_size_log2);
return min(offset, frame_size_in_blocks);
}
DecoderErrorOr<void> Parser::decode_tiles(FrameContext& frame_context)
{
auto log2_dimensions = frame_context.log2_of_tile_counts;
@ -888,13 +895,6 @@ DecoderErrorOr<void> Parser::decode_tiles(FrameContext& frame_context)
return {};
}
u32 Parser::get_tile_offset(u32 tile_num, u32 mis, u32 tile_size_log2)
{
u32 super_blocks = (mis + 7) >> 3u;
u32 offset = ((tile_num * super_blocks) >> tile_size_log2) << 3u;
return min(offset, mis);
}
DecoderErrorOr<void> Parser::decode_tile(TileContext& tile_context)
{
for (auto row = tile_context.rows_start; row < tile_context.rows_end; row += 8) {

1
Userland/Libraries/LibVideo/VP9/Parser.h
View file

@ -92,7 +92,6 @@ private:
/* (6.4) Decode Tiles Syntax */
DecoderErrorOr<void> decode_tiles(FrameContext&);
u32 get_tile_offset(u32 tile_num, u32 mis, u32 tile_size_log2);
DecoderErrorOr<void> decode_tile(TileContext&);
void clear_left_context(TileContext&);
DecoderErrorOr<void> decode_partition(TileContext&, u32 row, u32 column, BlockSubsize subsize);