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authorMichael Niedermayer <michael@niedermayer.cc>2023-10-22 20:18:51 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2023-10-27 18:10:46 +0200
commit9690d71f114a877b8c703baafbdf903601ef86bb (patch)
tree56e09c8d6e03c33ac66faf596d42cd5dfe3c52b0
parent9b546a071764871dee20a690a31f97c8f33da769 (diff)
downloadffmpeg-9690d71f114a877b8c703baafbdf903601ef86bb.tar.gz
avcodec/vlc: dont pass nb_elems into multi vlc code
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/vlc.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/libavcodec/vlc.c b/libavcodec/vlc.c
index 4f62eddf0f..7786043086 100644
--- a/libavcodec/vlc.c
+++ b/libavcodec/vlc.c
@@ -350,7 +350,7 @@ fail:
return AVERROR_INVALIDDATA;
}
-static void add_level(VLC_MULTI_ELEM *table, const int nb_elems,
+static void add_level(VLC_MULTI_ELEM *table, const int is16bit,
const int num, const int numbits,
const VLCcode *buf,
uint32_t curcode, int curlen,
@@ -358,7 +358,6 @@ static void add_level(VLC_MULTI_ELEM *table, const int nb_elems,
const int minlen, const int max,
unsigned* levelcnt, VLC_MULTI_ELEM *info)
{
- int is16bit = nb_elems>256;
int max_symbols = VLC_MULTI_MAX_SYMBOLS >> is16bit;
for (int i = num-1; i > max; i--) {
for (int j = 0; j < 2; j++) {
@@ -387,7 +386,7 @@ static void add_level(VLC_MULTI_ELEM *table, const int nb_elems,
}
if (curlevel+1 < max_symbols && newlimit >= minlen) {
- add_level(table, nb_elems, num, numbits, buf,
+ add_level(table, is16bit, num, numbits, buf,
code, l, newlimit, curlevel+1,
minlen, max, levelcnt, info);
}
@@ -396,7 +395,7 @@ static void add_level(VLC_MULTI_ELEM *table, const int nb_elems,
}
static int vlc_multi_gen(VLC_MULTI_ELEM *table, const VLC *single,
- const int nb_elems, const int nb_codes, const int numbits,
+ const int is16bit, const int nb_codes, const int numbits,
VLCcode *buf, void *logctx)
{
int minbits, maxbits, max = nb_codes-1;
@@ -424,7 +423,7 @@ static int vlc_multi_gen(VLC_MULTI_ELEM *table, const VLC *single,
AV_WN16(table[j].val, single->table[j].sym);
}
- add_level(table, nb_elems, nb_codes, numbits, buf,
+ add_level(table, is16bit, nb_codes, numbits, buf,
0, 0, FFMIN(maxbits, numbits), 0, minbits, max, count, &info);
av_log(logctx, AV_LOG_DEBUG, "Joint: %d/%d/%d/%d/%d codes min=%ubits max=%u\n",
@@ -480,7 +479,7 @@ int ff_vlc_init_multi_from_lengths(VLC *vlc, VLC_MULTI *multi, int nb_bits, int
ret = vlc_common_end(vlc, nb_bits, j, buf, flags, buf);
if (ret < 0)
goto fail;
- ret = vlc_multi_gen(multi->table, vlc, nb_elems, j, nb_bits, buf, logctx);
+ ret = vlc_multi_gen(multi->table, vlc, nb_elems > 256, j, nb_bits, buf, logctx);
if (buf != localbuf)
av_free(buf);
return ret;