theora_init_huffman_tables() does essentially the same as
ff_init_vlcs_from_lengths().
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavcodec/vp3.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index f288a53fe1..743d00390c 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2319,20 +2319,6 @@ static av_cold int init_frames(Vp3DecodeContext *s)
return 0;
}
-static av_cold int theora_init_huffman_tables(VLC *vlc, const HuffTable *huff)
-{
- uint32_t code = 0, codes[32];
-
- for (unsigned i = 0; i < huff->nb_entries; i++) {
- codes[i] = code >> (31 - huff->entries[i].len);
- code += 0x80000000U >> huff->entries[i].len;
- }
- return ff_init_vlc_sparse(vlc, 11, huff->nb_entries,
- &huff->entries[0].len, sizeof(huff->entries[0]),
1,
- codes, 4, 4,
- &huff->entries[0].sym, sizeof(huff->entries[0]),
1, 0);
-}
-
static av_cold int vp3_decode_init(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
@@ -2458,7 +2444,11 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
}
} else {
for (i = 0; i < FF_ARRAY_ELEMS(s->coeff_vlc); i++) {
- ret = theora_init_huffman_tables(&s->coeff_vlc[i],
&s->huffman_table[i]);
+ const HuffTable *tab = &s->huffman_table[i];
+
+ ret = ff_init_vlc_from_lengths(&s->coeff_vlc[i], 11,
tab->nb_entries,
+ &tab->entries[0].len,
sizeof(*tab->entries),
+ &tab->entries[0].sym,
sizeof(*tab->entries), 1, 0, 0);
if (ret < 0)
return ret;
}
--
2.25.1
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