libdcp/src/smpte_subtitle_asset.cc, branch python310

Nearly pretty-print subtitle XML (though not in nodes).

2022-03-20T20:20:58Z

This is an attempt to fix DoM bug #2205.

Make the former dcst namespace default for SMPTE subtitles.

2021-10-03T20:18:56Z

In DoM bug #2061 it is reported that Easy DCP gives the error "XML Document has default root namespace prefix: dcst. Default namespace should not use prefix for root or root namespace child nodes." with SMPTE subtitle files written by DCP-o-matic, and that the correct fix is to make the former dcst: namespace the default and then remove the dcst: qualifiers from everything. I'm not sure I agree with the error; AFAICS the subtitle files written by previous versions did not have a default root namespace prefix, since it was specified by xmlns:dcst and not just xmlns alone, so I think they were valid. However, using a default NS also seems fine, slightly simplifies the code and produces more compact subtitle files, so we change that here. It should also stop Easy DCP complaining, which is always marginally preferable to sticking to our guns and getting the blame for it.

Make similar changes to the previous commit for _xml_id.

2021-05-27T12:25:17Z

This is also unavailable if the asset is encrypted.

Tidy handling of _raw_xml.

2021-05-27T12:25:17Z

Before this if we tried to get the XML of an encrypted asset we would just get an empty string. Now we get a boost::none which means the verifier can avoid trying to check details of the XML (and instead raise a warning that you are trying to verify data that it cannot decrypt).

Read the bits we can from the MXF header even when it is encrypted.

2021-05-27T09:45:11Z

Fix/hide some warnings.

2021-04-13T23:00:05Z

Don't set the MXF _id from the XML tag.

2021-04-08T00:05:04Z

They should not be the same, so it's unhelpful to make them so. parse_xml() sets up _xml_id anyway.

Expose the MXF ResourceID from SMPTESubtitleAsset.

2021-04-08T00:04:44Z

Fix various bugs in subtitle/ccap verification.

2021-03-15T00:36:51Z

Check that subtitles don't overlap reel boundaries, and fix a few tests that trip this check. Fix confusion when calculating subtitle timings during verification where the picture asset frame rate was being used rather than the subtitle asset's edit rate. Do the subtitle timing verification for Interop as well as SMPTE subtitles. Take tags into account when checking subtitles, even though Bv2.1 says they should be set to 0. Rename Time::as_editable_units to Time::as_editable_units_ceil and add a _floor variant, then use that to round down when checking reel boundary overlaps.

Tidying.

2021-01-24T03:15:26Z