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| author | James Zern <jzern@google.com> | 2022-11-17 17:32:44 -0800 |
|---|---|---|
| committer | James Zern <jzern@google.com> | 2022-11-17 18:06:45 -0800 |
| commit | 54ebd5a375fd14a86dcf491431d8b8ebb62bc4d0 (patch) | |
| tree | 576eb1c5c8c9e86bdc85ebcdbd0d27a1c4c3cac4 | |
| parent | 44741f9c587e006e5289666b1cc8e63d97652315 (diff) | |
| download | libwebp-54ebd5a375fd14a86dcf491431d8b8ebb62bc4d0.tar.gz | |
webp-lossless-bitstream-spec: limit dist map lut to 69 cols
this is similar to an earlier change for most of the code examples:
7a0a9935 doc/*.txt: restrict code to 69 columns
some renderers may limit output to 72 and use a 3 space indent; this
avoids overflowing into the margin
Bug: webp:448
Change-Id: I2e8d66f598889c7bd824e911ea01fd70f98a4130
| -rw-r--r-- | doc/webp-lossless-bitstream-spec.txt | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/doc/webp-lossless-bitstream-spec.txt b/doc/webp-lossless-bitstream-spec.txt index 14afb949..e6732636 100644 --- a/doc/webp-lossless-bitstream-spec.txt +++ b/doc/webp-lossless-bitstream-spec.txt @@ -744,21 +744,24 @@ The mapping between distance code `i` and the neighboring pixel offset `(xi, yi)` is as follows: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -(0, 1), (1, 0), (1, 1), (-1, 1), (0, 2), (2, 0), (1, 2), (-1, 2), -(2, 1), (-2, 1), (2, 2), (-2, 2), (0, 3), (3, 0), (1, 3), (-1, 3), -(3, 1), (-3, 1), (2, 3), (-2, 3), (3, 2), (-3, 2), (0, 4), (4, 0), -(1, 4), (-1, 4), (4, 1), (-4, 1), (3, 3), (-3, 3), (2, 4), (-2, 4), -(4, 2), (-4, 2), (0, 5), (3, 4), (-3, 4), (4, 3), (-4, 3), (5, 0), -(1, 5), (-1, 5), (5, 1), (-5, 1), (2, 5), (-2, 5), (5, 2), (-5, 2), -(4, 4), (-4, 4), (3, 5), (-3, 5), (5, 3), (-5, 3), (0, 6), (6, 0), -(1, 6), (-1, 6), (6, 1), (-6, 1), (2, 6), (-2, 6), (6, 2), (-6, 2), -(4, 5), (-4, 5), (5, 4), (-5, 4), (3, 6), (-3, 6), (6, 3), (-6, 3), -(0, 7), (7, 0), (1, 7), (-1, 7), (5, 5), (-5, 5), (7, 1), (-7, 1), -(4, 6), (-4, 6), (6, 4), (-6, 4), (2, 7), (-2, 7), (7, 2), (-7, 2), -(3, 7), (-3, 7), (7, 3), (-7, 3), (5, 6), (-5, 6), (6, 5), (-6, 5), -(8, 0), (4, 7), (-4, 7), (7, 4), (-7, 4), (8, 1), (8, 2), (6, 6), -(-6, 6), (8, 3), (5, 7), (-5, 7), (7, 5), (-7, 5), (8, 4), (6, 7), -(-6, 7), (7, 6), (-7, 6), (8, 5), (7, 7), (-7, 7), (8, 6), (8, 7) +(0, 1), (1, 0), (1, 1), (-1, 1), (0, 2), (2, 0), (1, 2), +(-1, 2), (2, 1), (-2, 1), (2, 2), (-2, 2), (0, 3), (3, 0), +(1, 3), (-1, 3), (3, 1), (-3, 1), (2, 3), (-2, 3), (3, 2), +(-3, 2), (0, 4), (4, 0), (1, 4), (-1, 4), (4, 1), (-4, 1), +(3, 3), (-3, 3), (2, 4), (-2, 4), (4, 2), (-4, 2), (0, 5), +(3, 4), (-3, 4), (4, 3), (-4, 3), (5, 0), (1, 5), (-1, 5), +(5, 1), (-5, 1), (2, 5), (-2, 5), (5, 2), (-5, 2), (4, 4), +(-4, 4), (3, 5), (-3, 5), (5, 3), (-5, 3), (0, 6), (6, 0), +(1, 6), (-1, 6), (6, 1), (-6, 1), (2, 6), (-2, 6), (6, 2), +(-6, 2), (4, 5), (-4, 5), (5, 4), (-5, 4), (3, 6), (-3, 6), +(6, 3), (-6, 3), (0, 7), (7, 0), (1, 7), (-1, 7), (5, 5), +(-5, 5), (7, 1), (-7, 1), (4, 6), (-4, 6), (6, 4), (-6, 4), +(2, 7), (-2, 7), (7, 2), (-7, 2), (3, 7), (-3, 7), (7, 3), +(-7, 3), (5, 6), (-5, 6), (6, 5), (-6, 5), (8, 0), (4, 7), +(-4, 7), (7, 4), (-7, 4), (8, 1), (8, 2), (6, 6), (-6, 6), +(8, 3), (5, 7), (-5, 7), (7, 5), (-7, 5), (8, 4), (6, 7), +(-6, 7), (7, 6), (-7, 6), (8, 5), (7, 7), (-7, 7), (8, 6), +(8, 7) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ For example, distance code `1` indicates an offset of `(0, 1)` for the |