avcodec/mpeg12dec: Don't initialize IDCT more than once

Before 998c9f15d1ca8c7489775ebcca51623b915988f1, the IDCTDSPContext
has only been initialized in ff_mpv_common_init() which is deferred
until immediately before decoding a picture; to nevertheless parse
the quant matrices in sequence headers or quant matrix extensions,
a dummy (identity) permutation has been stored in the codec's init
function; after ff_mpv_common_init() which could change the permutation
the matrices were repermutated.

Yet since said commit, the IDCTDSPContext is initialized during init
and does not change afterwards (unless the user forces different CPU
flags), so there is no need to reinitialize it; the repermutation code
can be removed as well.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

0 files changed, 0 insertions, 0 deletions