There are seven MJPEG-tables, five small (1x12, 4x17) and two
not small (2x162). These are all avpriv, despite this not being
worthwhile due to the overhead of exporting a symbol: The total
overhead for each symbol consists of two entries in .dynsym (24B each),
one entry in the importing library's .rela.dyn (24B) and one in .got
(8B) as well as 2x2B for symbol versions and 4B for symbol hashes
in the exporting library; in addition to that, the name of the symbol
is included in both exporting and importing libraries, using 2x210 bytes
in this case.
(The above numbers are for a x64 Elf/Linux/GNU system. Other platforms
will give different numbers.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Since g2meet.c doesn't use it any more, only encoders use it and
the place for their common code is mjpegenc_common.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Some JPEGs [1] have incorrect DHT entries that map 2 codes to
the same value.
The second (last) mapping does not ever actually appear in the
code stream, therefore ignoring any mappings after the first one
fixes this.
Without this, an "mjpeg_decode_dc: bad vlc: 0:0" error is thrown.
In all known files, the 2 codes are mapped to symbol 0 so only
that case is checked.
[1]: Embedded JPEGs in "X7 RAW" and "X7 CinemaDNG" samples here:
https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris <velocityra@gmail.com>
* commit '4978850ca2':
build: Split JPEG-related tables off into a separate component
Conflicts:
configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>
