This syncs the document with the draft RFC.
block_xsize -> transform_width
i -> distance_code
x/ysize -> image_width/height
Change-Id: Ief442c90157e82c518e8cb175a522c519b16ac69
in the 'Canvas Assembly from Frames' section. This matches the format in
the RFC draft; assert was not defined
Change-Id: Ib943b42f75fd1b4c281848f14e0626df9c868f59
place the unknown 'XYZW' chunk at the end of the file to agree with the
order given by the 'Extended File Format' section.
Change-Id: I5cec5a61069a03f3487f5f9ff9209f5ead6de24c
4 bits are read ([0, 15]) with 4 added to the result. The check that the
result is not > NUM_CODE_LENGTH_CODES (19) is redundant. This makes the
check an assert for documentation purposes.
webp-lossless-bitstream-spec.txt is updated accordingly.
Bug: webp:611
Change-Id: Ie461017dc9de3da4cfe6856543d3dcf58f53a180
In Section 6.2 Details, use uppercase after a :. This is more consistent
with the rest of the doc.
Bug: webp:611
Change-Id: I7ac862c90fd8e5fe0bad0dd5e3515d3095a6dc9a
in ordered list in "6.2. Details". This is more consistent with the rest
of the document.
Bug: webp:611
Change-Id: Ie467c771afd5813a30855b24c80cf92673a5281c
when referring to the RIFF chunk size; this is more consistent with
other documentation.
Bug: webp:611
Change-Id: Icf05491ee79f5c48fab0b4935da397b4e4e45a71
The serial comma change is based on the Chicago Manual of Style
(CMOS), 17th edition.
Bug: webp:611
Change-Id: Ic02e6652662608414c16e0fead2912781a47633d
Move the details given for meta prefix codes and the transforms from
"5.1. Roles of Image Data" to their corresponding sections.
Bug: webp:611
Change-Id: I750a3f45956d0a3928a22113180a2590ac1a36db
After processing the Color Indexing Transform the image width is
subsampled by the transform's width_bits.
Bug: webp:611
Change-Id: If8d2d47dbe05e5c8085fb3fb4c1b63552be9028b
If ReadBits(0) == 0, the value of max_symbol is set to the alphabet size
for each symbol type.
See vp8l_dec.c, ReadHuffmanCode(), which passes alphabet_size to
ReadHuffmanCodeLengths() as num_symbols, and ReadHuffmanCodeLengths()
then sets max_symbol to that.
Bug: webp:611
Change-Id: I662bd1d7f372e7f2e9c71cc86f87aefd02f36647
Make Entropy Image and Interpretation of Meta Prefix Codes their own
section for ease of reference.
Bug: webp:611
Change-Id: I2dba7b4efd02d8bb250810ebff42ac1687262804
follow up to:
29c9f2d4 webp-lossless-bitstream-spec: minor wording updates
Universally use 'transform' over 'transformation'. The doc generally
uses 'transform' to talk about the individual transforms themselves as
well as their related data.
Bug: webp:611
Change-Id: I097701873bbc440bd399ab5440a914a14f7c62f6
The last use of #decoding-the-code-lengths was removed in:
86f94ee0 Update lossless spec with Huffman codes.
Also remove the redundant section header associated with it.
Bug: webp:611
Change-Id: I7f6bb1a1b75255324f185f4591313d9e6d49d1e9
Remove the ambiguous 'should' which in other contexts might result in
questions as to whether it is a SHOULD or a MUST.
Change-Id: I9b396187ebde5ea5a0dbaf42daee6acf541258cd
Within the 'Entropy image' subsection, its clear this is what is being
described in the following paragraphs. Remove 'as described below' from
the first sentence.
Bug: webp:611
Change-Id: I365d69c8f6963cd826849ebdd96e46206d38b55d
Move this to the top-level of the "Details" section as prefix codes are
discussed in both "Decoding and Building the Prefix Codes" and "Decoding
of Meta Prefix Codes"
Bug: webp:611
Change-Id: Ide2dfedf081d6c94122ac16ecded968ed760f90c
in the Transformations section describing decoding of the transform
data followed by the image data. The section numbers were adjusted by 1
in:
337cf69f webp-lossless-bitstream-spec: mv Nomenclature after Intro
Bug: webp:611
Change-Id: I4eede0d068fabdef51a140a0268436ab6629e8bb
Give some examples of repetition and binary value notation to limit the
need to follow the ABNF reference.
Bug: webp:611
Change-Id: I5b5a7632f011e1523b4a528653fe3630afba3e3e
in 6.2.3 Decoding Entropy-Coded Image Data.
The copying of distance code pixels cause some confusion during the
AUTH48 portion of the RFC review process.
Bug: webp:611
Change-Id: I78f547ae10c95f180355a4c93ec6d48acdc09141
Mostly grammatical and addition/subtraction of commas from the AUTH48
portion of the RFC review process.
The serial comma changes are based on the Chicago Manual of Style
(CMOS), 17th edition.
Bug: webp:611
Change-Id: I5ae2d1cc0196009dbf3a4c2195cc73c2ef809b49
preprocessing bits are informative, not the filtering bits.
since:
391f9db9 Ordering of description of bits in container spec
Change-Id: I1c0da963074ce9cf4d33a13b4b36c9421b3e3b9d
Mostly grammatical and addition/subtraction of commas from the AUTH48
portion of the RFC review process.
The serial comma changes are based on the Chicago Manual of Style
(CMOS), 17th edition.
Change-Id: Ic75abf2e53e09c8a849e28e9c40e16c127515287
