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webp-lossless-bitstream-spec,cosmetics: delete blank lines

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This normalizes the spacing between sections and quiets some lint
warnings.

Bug: webp:611
Change-Id: Ic36eb08d55a566def74f746e2ec225c67ff8aecf
This commit is contained in:
James Zern 2023-07-14 15:12:35 -07:00
parent 29b9eb1517
commit 6c6b3fd317
1 changed files with 0 additions and 13 deletions
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doc/webp-lossless-bitstream-spec.txt
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@ -31,7 +31,6 @@ as 25% denser compression than can be achieved using today's PNG format.
* TOC placeholder
{:toc}
1 Introduction
--------------
@ -73,7 +72,6 @@ lossless image can go through four different types of transforms before being
entropy encoded. The transform information in the bitstream contains the data
required to apply the respective inverse transforms.
2 Nomenclature
--------------
@ -173,7 +171,6 @@ be treated as an error.
int version_number = ReadBits(3);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4 Transforms
------------
@ -220,7 +217,6 @@ they are read from the bitstream, that is, last one first.
Next, we describe the transform data for different types.
### 4.1 Predictor Transform
The predictor transform can be used to reduce entropy by exploiting the fact
@ -377,7 +373,6 @@ void PredictorTransformOutput(uint32 residual, uint32 pred,
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
### 4.2 Color Transform
The goal of the color transform is to decorrelate the R, G, and B values of each
@ -483,7 +478,6 @@ void InverseTransform(uint8 red, uint8 green, uint8 blue,
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
### 4.3 Subtract Green Transform
The subtract green transform subtracts green values from red and blue values of
@ -502,7 +496,6 @@ This transform is redundant, as it can be modeled using the color transform, but
since there is no additional data here, the subtract green transform can be
coded using fewer bits than a full-blown color transform.
### 4.4 Color Indexing Transform
If there are not many unique pixel values, it may be more efficient to create a
@ -591,7 +584,6 @@ The values are packed into the green component as follows:
value at x / 8, and green values at x + 1 to x + 7 are positioned in order
to the more significant bits of the green value at x / 8.
5 Image Data
------------
@ -769,7 +761,6 @@ if (dist < 1) {
where `distance_map` is the mapping noted above, and `xsize` is the width of the
image in pixels.
#### 5.2.3 Color Cache Coding
{:#color-cache-code}
@ -806,7 +797,6 @@ decoding time. The state of the color cache is maintained by inserting every
pixel, be it produced by backward referencing or as literals, into the cache in
the order they appear in the stream.
6 Entropy Code
--------------
@ -1069,7 +1059,6 @@ The interpretation of S depends on its value:
1. Use S - (256 + 24) as the index into the color cache.
1. Get ARGB color from the color cache at that index.
7 Overall Structure of the Format
---------------------------------
@ -1092,7 +1081,6 @@ version = 3BIT ; 0
image-stream = optional-transform spatially-coded-image
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#### 7.2 Structure of Transforms
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -1115,7 +1103,6 @@ color-indexing-image = 8BIT ; color count
entropy-coded-image
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#### 7.3 Structure of the Image Data
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~