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Code Issues Releases Activity

avcodec/vqcdec: Avoid unnecessary VLC structure

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Everything besides VLC.table is basically write-only
and even VLC.table can be removed by accessing the
underlying table directly.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-09-24 15:34:31 +02:00
parent 99ed510d4b
commit 36e7f9b339
1 changed files with 7 additions and 6 deletions
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13
libavcodec/vqcdec.c
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@ -49,14 +49,15 @@ static const int8_t vector_symbols[] = {
2, 3, 4, SIGNED_8BIT, -2, -3, -4, SIGNED_6BIT
};
static VLC vector_vlc;
static VLCElem vector_vlc[1 << VECTOR_VLC_BITS];
static av_cold void vqc_init_static_data(void)
{
VLC_INIT_STATIC_FROM_LENGTHS(&vector_vlc, VECTOR_VLC_BITS, FF_ARRAY_ELEMS(vector_nbits),
vector_nbits, 1,
vector_symbols, 1, 1,
0, 0, 1 << VECTOR_VLC_BITS);
VLC_INIT_STATIC_TABLE_FROM_LENGTHS(vector_vlc, VECTOR_VLC_BITS,
FF_ARRAY_ELEMS(vector_nbits),
vector_nbits, 1,
vector_symbols, 1, 1,
0, 0);
}
typedef struct VqcContext {
@ -171,7 +172,7 @@ static int decode_vectors(VqcContext * s, const uint8_t * buf, int size, int wid
continue;
}
symbol = get_vlc2(&gb, vector_vlc.table, VECTOR_VLC_BITS, 1);
symbol = get_vlc2(&gb, vector_vlc, VECTOR_VLC_BITS, 1);
switch(symbol) {
case SKIP_3: dst += 3; break;
case SKIP_4: dst += 4; break;