Perform some cleanups based on the dtsdec code such as using the boilerplate
macro and static pad template functions.
Add some documentation. Don't register a change in flags until we synch on
another frame successfully.
Make it so that filenames and line numbers are only stored in the *.pot file
(which is not in git), but not in the individual *.po files. This information
is hardly useful for translators in our case, and it should avoid the constant
conflicts of local *.po files with the ones in git which are caused by the
source files changing and the line numbers being updated. This commit might
cause one last merge conflict for you, which you can work around with
"git checkout po/*.po" before merging or pulling. After that there should
(hopefully) not be any more local modifications of these files (unless
someone committed additions or changes to translated strings and the
*.po files haven't been updated yet, that is).
The repeat first field flag was introduced in 0.5.0 so conditionally disable its
detection and just assume no rff is used. This fixes the compilation.
Fixes#582375
Some Xing headers apparently start the TOC at byte 1 instead of 0. Don't
reject them because of it, just subtract the initial offset when reading
the table.
Be more lenient about what we accept as changing bits in a header - basically,
only require that the mp3 sync marker is present, for the mpeg version,
layer and samplerate.
Fixes: #581464
Some mp3 streams have an offset in timestamps, requiring us to push the
frame *AFTER* segment.stop in order for the decoder to be able to push
all data up to the segment.stop position.
This also makes timestamps (more) consistent before and after a possible
seek, and moreover makes for reasonable position reporting in live stream
(whose payload timestamps should not be taken for granted).
* Improve newsegment handling, e.g. upstream might live in TIME.
* Only send newsegment if we have needed info.
* Avoid reading past end of data section.
lame_set_VBR_quality(), which takes a floating point value for the
quality, has been added only in v3.98. Use lame_set_VBR_q(), which
takes quality as an integer, for older LAME versions.
Fixes#581341.
