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avcodec/vp3: Increase some VLC tables 

These are quite small and therefore force reloads
that can be avoided by modest increases in the number of bits used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-09-20 16:56:44 +02:00
parent 1fee3a3dce
commit c630d76b27
1 changed files with 5 additions and 5 deletions
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10
libavcodec/vp3.c
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@ -164,7 +164,7 @@ static VLCElem fragment_run_length_vlc[56]; /* version < 2 */
static VLCElem motion_vector_vlc[112]; /* version < 2 */
// The VP4 tables reuse this vlc.
static VLCElem mode_code_vlc[18 + 2084 * CONFIG_VP4_DECODER];
static VLCElem mode_code_vlc[24 + 2108 * CONFIG_VP4_DECODER];
#if CONFIG_VP4_DECODER
static const VLCElem *vp4_mv_vlc_table[2][7]; /* version >= 2 */
@ -681,7 +681,7 @@ static int vp4_get_mb_count(Vp3DecodeContext *s, GetBitContext *gb)
static int vp4_get_block_pattern(GetBitContext *gb, int *next_block_pattern_table)
{
int v = get_vlc2(gb, block_pattern_vlc[*next_block_pattern_table], 3, 2);
int v = get_vlc2(gb, block_pattern_vlc[*next_block_pattern_table], 5, 1);
*next_block_pattern_table = vp4_block_pattern_table_selector[v];
return v + 1;
}
@ -840,7 +840,7 @@ static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb)
if (scheme == 7)
coding_mode = get_bits(gb, 3);
else
coding_mode = alphabet[get_vlc2(gb, mode_code_vlc, 3, 3)];
coding_mode = alphabet[get_vlc2(gb, mode_code_vlc, 4, 2)];
s->macroblock_coding[current_macroblock] = coding_mode;
for (k = 0; k < 4; k++) {
@ -2275,7 +2275,7 @@ static av_cold void init_tables_once(void)
&motion_vector_vlc_table[0][0], 2, 1,
-31, 0);
ff_vlc_init_tables_from_lengths(&state, 3, 8,
ff_vlc_init_tables_from_lengths(&state, 4, 8,
mode_code_vlc_len, 1,
NULL, 0, 0, 0, 0);
@ -2292,7 +2292,7 @@ static av_cold void init_tables_once(void)
/* version >= 2 */
for (int i = 0; i < 2; i++) {
block_pattern_vlc[i] =
ff_vlc_init_tables(&state, 3, 14,
ff_vlc_init_tables(&state, 5, 14,
&vp4_block_pattern_vlc[i][0][1], 2, 1,
&vp4_block_pattern_vlc[i][0][0], 2, 1, 0);
}