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Re: Converting the sample material provided by DECE to IMSC1

From: Pierre-Anthony Lemieux <pal@sandflow.com>
Date: Thu, 18 Dec 2014 17:11:46 -0800
Message-ID: <CAF_7JxD2jNy+uO5OtY5Lc61PaM6rSvGXEmobXsQv0zbyH52dXA@mail.gmail.com>
To: Nigel Megitt <nigel.megitt@bbc.co.uk>
Cc: Thierry MICHEL <tmichel@w3.org>, "public-tt@w3.org" <public-tt@w3.org>
Hi Thierry,

> That the implementation lays out the text for the
> specified generic font family names according to the fonts listed in
> Appendix A.

I would look for implementers input here.

One option would be to generate a reference render for a test that
uses the generic font family name. Implementations could then evaluate
their render against it.

> performance/complexity i.e. that the implementation
> can process all documents that are valid according to the HRM

I expect it should be possible to craft samples that explore selected
limits of the HRM.

Best,

-- Pierre

On Thu, Dec 18, 2014 at 8:59 AM, Nigel Megitt <nigel.megitt@bbc.co.uk> wrote:
> On 18/12/2014 16:53, "Pierre-Anthony Lemieux" <pal@sandflow.com> wrote:
>
>>Hi Thierry,
>>
>>My input below.
>>
>>> 1- How  will we make sure we cover, with a least one test, every
>>>feature defined in IMSC1
>>> (but not already present in TTML1).
>>
>>Below is my list of features defined in IMSC1 but not already present in
>>TTML1:
>>
>>smpte:backgroundImage in
>>http://www.smpte-ra.org/schemas/2052-1/2010/smpte-tt#image
>>#multiRowAlign
>>#linePadding
>>#altText
>>#forcedDisplay
>>#aspectRatio
>>#progressivelyDecodable
>
> What about:
>
> performance/complexity i.e. that the implementation can process all
> documents that are valid according to the HRM
>
> reference fonts, i.e. That the implementation lays out the text for the
> specified generic font family names according to the fonts listed in
> Appendix A.
>
>
>
>>
>>Each test could simply list which of these features it includes, in
>>the 'Notes' column -- probably best renamed 'Features'.
>>
>>> 5- I looked at some tests but I couldn't access all the material, I
>>>guess.
>>
>>The PNG URIs should be fixed now.
>>
>>> 2- Do we have an estimate of how many tests would be needed (I think I
>>>recall you had started to evaluate this.
>>
>>Does W3C have specific requirements on the number of tests? At least
>>one per feature, as you mention below, right?
>>
>>Best,
>>
>>-- Pierre
>>
>>On Thu, Dec 18, 2014 at 12:18 AM, Thierry MICHEL <tmichel@w3.org> wrote:
>>> Pierre,
>>>
>>> This first version of the implementation works great now. Thanks.
>>>
>>> I have a few issues about this testsuite and implementation Report that
>>>we
>>> should probably discuss later during a telecon:
>>>
>>> 1- How  will we make sure we cover, with a least one test, every feature
>>> defined in IMSC1 (but not already present in TTML1).
>>>
>>> 2- Do we have an estimate of how many tests would be needed (I think I
>>> recall you had started to evaluate this).
>>>
>>> 3- There is a "Notes" column that mention the type of Profile. Should we
>>> have also another one mentioning the feature tested.
>>>
>>> 4- each test should probably also explain in prose what the
>>>implementation
>>> should display.
>>>
>>> 5- I looked at some tests but I couldn't access all the material, I
>>>guess.
>>>
>>> For example
>>>
>>> - the implementation links to track100-frag0-sample1-subs0.ttml
>>>
>>>https://dvcs.w3.org/hg/ttml/file/tip/ttml-ww-profiles/testsuite/dece/Sole
>>>kai032_MaxNumSubtitleTracks_v7_subtitles/track100-frag0-sample1-subs0.ttm
>>>l
>>>
>>> - the test suite links to the same test in another URI
>>>
>>>
>>>https://dvcs.w3.org/hg/ttml/file/a6cb53f5e8ce/ttml-ww-profiles/testsuite/
>>>dece/Solekai032_MaxNumSubtitleTracks_v7_subtitles/track100-frag0-sample1-
>>>subs0.ttml
>>>
>>> But I can't access the png resources like
>>>"track100-frag0-sample1-subs1.png"
>>> used in the above test [smpte:backgroundImage="1.png"/>]
>>>
>>>https://dvcs.w3.org/hg/ttml/file/a6cb53f5e8ce/ttml-ww-profiles/testsuite/
>>>dece/Solekai032_MaxNumSubtitleTracks_v7_subtitles/track100-frag0-sample1-
>>>subs1.png
>>>
>>> Thanks for your work to lunch this test suite.
>>>
>>>
>>> Thierry
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 18/12/2014 08:47, Pierre-Anthony Lemieux wrote:
>>>>
>>>> Hi Thierry,
>>>>
>>>> It should work now.
>>>>
>>>> Thanks,
>>>>
>>>> -- Pierre
>>>>
>>>> On Dec 17, 2014 11:33 PM, "Thierry MICHEL" <tmichel@w3.org
>>>> <mailto:tmichel@w3.org>> wrote:
>>>>
>>>>     Pierre,
>>>>
>>>>
>>>>     Thank you for converting this materiel provided by DECE.
>>>>
>>>>     I couldn't access to any tests linked from the
>>>>Implementation_Report.
>>>>     I may be missing something, as I am getting a "not found"  (see
>>>>     attached screenshoot).
>>>>
>>>>     Thierry
>>>>
>>>>
>>>>
>>>>     On 18/12/2014 06:31, Pierre-Anthony Lemieux wrote:
>>>>
>>>>         Good morning/evening,
>>>>
>>>>         I have taken a first stab [1] at converting the sample material
>>>>         provided by DECE to IMSC1 using the script at [2], and have
>>>> updated
>>>>         the implementation report template at [3]
>>>>
>>>>         [1]
>>>>
>>>>
>>>>https://dvcs.w3.org/hg/ttml/__file/tip/ttml-ww-profiles/__testsuite/dece
>>>>
>>>> <https://dvcs.w3.org/hg/ttml/file/tip/ttml-ww-profiles/testsuite/dece>
>>>>         [2]
>>>>
>>>>
>>>>https://dvcs.w3.org/hg/ttml/__file/tip/ttml-ww-profiles/__testsuite/src/
>>>>convert-cff.py
>>>>
>>>>
>>>><https://dvcs.w3.org/hg/ttml/file/tip/ttml-ww-profiles/testsuite/src/con
>>>>vert-cff.py>
>>>>         [3]
>>>>
>>>>https://www.w3.org/wiki/__TimedText/IMSC1___Implementation_Report
>>>> <https://www.w3.org/wiki/TimedText/IMSC1_Implementation_Report>
>>>>
>>>>         Looking forward to feedback.
>>>>
>>>>         Best,
>>>>
>>>>         -- Pierre
>>>>
>>>
>>
>
Received on Friday, 19 December 2014 01:12:36 UTC

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