The GetBitContext API requires the buffer to be padded, and the documentation
for
av_ac3_parse_header() does not specify it, so use a temporary local buffer.
Signed-off-by: James Almer <jamr...@gmail.com>
---
libavcodec/ac3_parser.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c
index 69989690dd..1d9a40a8d9 100644
--- a/libavcodec/ac3_parser.c
+++ b/libavcodec/ac3_parser.c
@@ -202,9 +202,13 @@ int av_ac3_parse_header(const uint8_t *buf, size_t size,
{
GetBitContext gb;
AC3HeaderInfo hdr;
+ uint8_t tmp[32 + AV_INPUT_BUFFER_PADDING_SIZE];
int err;
- err = init_get_bits8(&gb, buf, size);
+ size = FFMIN(32, size);
+ memcpy(tmp, buf, size);
+ memset(tmp + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
+ err = init_get_bits8(&gb, tmp, size);
if (err < 0)
return AVERROR_INVALIDDATA;
err = ff_ac3_parse_header(&gb, &hdr);
--
2.49.0
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