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In C, qualifiers for arrays are broken:
const VLC_TYPE (*foo)[2] is a pointer to an array of two const VLC_TYPE
elements and unfortunately this is not compatible with a pointer
to a const array of two VLC_TYPE, because the latter does not exist
as array types are never qualified (the qualifier applies to the base
type instead). This is the reason why get_vlc2() doesn't accept
a const VLC table despite not modifying the table at all, as
there is no automatic conversion from VLC_TYPE (*)[2] to
const VLC_TYPE (*)[2].
Fix this by using a structure VLCElem for the VLC table.
This also has the advantage of making it clear which
element is which.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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It can't any longer, because all users of ff_rl_init() are now
behind ff_thread_once() or the global codec lock. Therefore
the check for whether the RLTable is already initialized can be removed;
as can the stack buffers that existed to make sure that nothing is ever
set to a value different from its final value.
Similarly, it is not necessary to check whether the VLCs associated
with the RLTable are already initialized (they aren't).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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It is not uncommon that only the first one is used; this is similar to
ff_init_2d_vlc_rl().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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ff_rl_free() was added in 324e50ee95929a9491b855c5e15451145bd5d1ec,
but never used; nonstatic storage was not used long before that.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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* commit 'ffa190d0479d2370dd89c95692f822cbff2cc24c':
Move VLC and RL_VLC_ELEM structure definitions to a separate header
Merged-by: Clément Bœsch <u@pkh.me>
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Use the newly created vlc.h directly instead of including get_bits when needed.
The VLC and RL_VLC_ELEM structures are independent from the bitreader.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
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* commit '1b1bb2c4efc126d74d44d8c421860c85f932ecb1':
rl: Add error checking to ff_rl_init().
Conflicts:
libavcodec/rl.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '324e50ee95929a9491b855c5e15451145bd5d1ec':
rl: Add a function for freeing dynamically allocated tables.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Such tables are not used anywhere currently, but that should change.
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* commit '6f57375d707de40dcec28d3cef886c364e032c21':
rl: Rename ff_*_rl() to ff_rl_*()
Conflicts:
libavcodec/mpeg4videodec.c
libavcodec/rl.c
libavcodec/rl.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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* commit 'fa1923f18205410a3b0aa6c0e77cb31443ef340d':
mpegvideo: Move ff_*_rl functions to a separate file
Conflicts:
libavcodec/mpegvideo.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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