ccconverter: fix cdp timecode parsing/writing

commit 27fabee5

decklinkvideosink: write the cdp timecode data correctly

We were mixing up the tens part with the unit parts all over the place.

e.g. 12 seconds would be encoded as 0x21 instead of the correct 0x12

Aligns the code with the same change applied to ccconverter.

commit 32e85b70

ccconverter: write the cdp timecode data correctly

We were mixing up the tens part with the unit parts all over the place.

e.g. 12 seconds would be encoded as 0x21 instead of the correct 0x12

commit edc13bb8

ccconverter: output warning log if parsing a cdp packet fails

Simplifies figuring out why there may be no output from ccconverter with
a cdp input.

commit e6bc978a

ccconverter: fix cdp timecode parsing

The first reserved bits are in the most significant bit.

i.e. 0xc0 vs 0x0c