Re: [Cellar] draft-ietf-cellar-ffv1-13 comments
"Murray S. Kucherawy" <superuser@gmail.com> Thu, 30 April 2020 01:51 UTC
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From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Wed, 29 Apr 2020 18:51:34 -0700
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To: Jerome Martinez <jerome@mediaarea.net>
Cc: cellar@ietf.org, Adam Roach <adam@nostrum.com>
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Subject: Re: [Cellar] draft-ietf-cellar-ffv1-13 comments
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On Wed, Apr 29, 2020 at 1:48 PM Jerome Martinez <jerome@mediaarea.net> wrote: > Section 3.8.2.1.3: > * Same issue about "value". > > Murray, I didn't get it (no comma there) > Sorry, disregard. This referred to an issue I had with an earlier section but I changed my mind, and deleted that one but forgot to delete this one. > Section 4.2.3.1: > * "AVI " should be just "AVI" (i.e., remove the trailing space) > > Murray, the "trailing" space is required. It is a part of a 4-letter > identifier found in AVI files (0x41564920 in hexadecimal). > Interesting. You might want to make that clear, because I expect the RFC Editor will have exactly the same question. > Section 4.6: > * Another table with an empty "type" column. I think I see now that the > column is populated against each line that outputs something, but can it > not just be omitted when there's no output to the function? > > Same as with other tables. > > > * But does this function really output nothing? > > Murray, not sure I understand the question. > This function read nothing from the input, and call Line() which calls > Pixel(). > It is in a standalone pseudo-code block for an having blocks easy to > understand (SliceHeader(), SliceContent(), SliceHeader()). > SliceContent() could move into Slice() but IMO it is less readable. > This goes back to not understanding how to interpret these these "type" columns. But also, this is another place where a forward reference to Line() would be helpful. And then down in Line(), there are lines of pseudo-code that appear to be standalone array references. In the table in Section 4.1, those lines have types, which I thought means there's some output happening. Is that not the case here? If not, then this is a nested set f function calls that do some computation but don't appear to yield anything. That's why I'm confused here. Sections 4.6.1 through 4.6.4: > * Same comment as before about inline formulae. > > Fixed. > But it means that all is in one chapter, IMO it is a lot of formulae. > You don't have to put them all in one chapter. I was thinking of just this for 4.6.1, for example: "primary_color_count" is defined as: 1 + ( chroma_planes ? 2 : 0 ) + ( extra_plane ? 1 : 0 ) That even parses in C. :-) -MSK
- [Cellar] draft-ietf-cellar-ffv1-13 comments Murray S. Kucherawy
- Re: [Cellar] draft-ietf-cellar-ffv1-13 comments Jerome Martinez
- Re: [Cellar] draft-ietf-cellar-ffv1-13 comments Murray S. Kucherawy