mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-01-24 13:56:33 +02:00
avcodec/golomb: Speed up long ur_golomb codes
Fixes: Timeout Fixes: 10972/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLAC_fuzzer-5707569640243200 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
3c9c9b1568
commit
6b4c9854da
@ -476,15 +476,19 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
|
||||
return buf;
|
||||
} else {
|
||||
int i;
|
||||
for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0; i++) {
|
||||
for (i = 0; i + MIN_CACHE_BITS <= limit && SHOW_UBITS(re, gb, MIN_CACHE_BITS) == 0; i += MIN_CACHE_BITS) {
|
||||
if (gb->size_in_bits <= re_index) {
|
||||
CLOSE_READER(re, gb);
|
||||
return -1;
|
||||
}
|
||||
LAST_SKIP_BITS(re, gb, 1);
|
||||
LAST_SKIP_BITS(re, gb, MIN_CACHE_BITS);
|
||||
UPDATE_CACHE(re, gb);
|
||||
}
|
||||
SKIP_BITS(re, gb, 1);
|
||||
for (; i < limit && SHOW_UBITS(re, gb, 1) == 0; i++) {
|
||||
SKIP_BITS(re, gb, 1);
|
||||
}
|
||||
LAST_SKIP_BITS(re, gb, 1);
|
||||
UPDATE_CACHE(re, gb);
|
||||
|
||||
if (i < limit - 1) {
|
||||
if (k) {
|
||||
|
Loading…
x
Reference in New Issue
Block a user