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| author | Richard Townsend <Richard.Townsend@arm.com> | 2018-01-25 19:03:04 +0000 |
|---|---|---|
| committer | Cosmin Truta <ctruta@gmail.com> | 2018-09-04 00:04:58 -0400 |
| commit | 7734cda20cf1236aef60f3bbd2267c97bbb40869 (patch) | |
| tree | 46bd39573775cfbec419527dcd3573e0bbfcf0e1 /pngstruct.h | |
| parent | 2fc5ddff180f20ab8f7c689dc7a9562521c2f427 (diff) | |
Optimize png_do_expand_palette for ARM
ARM-specific optimization processes 8 or 4 pixels at once.
Improves performance by around 10-22% on a recent ARM Chromebook.
Diffstat (limited to 'pngstruct.h')
| -rw-r--r-- | pngstruct.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pngstruct.h b/pngstruct.h index d57603177..94a6d041f 100644 --- a/pngstruct.h +++ b/pngstruct.h @@ -228,6 +228,10 @@ struct png_struct_def * big_row_buf; while writing it is separately * allocated. */ +#ifdef PNG_READ_EXPAND_SUPPORTED + /* Buffer to accelerate palette transformations. */ + png_bytep riffled_palette; +#endif #ifdef PNG_WRITE_FILTER_SUPPORTED png_bytep try_row; /* buffer to save trial row when filtering */ png_bytep tst_row; /* buffer to save best trial row when filtering */ |