xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-24 12:09:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

libavcodec/mpegaudiodecheader.h : detect reserved mpeg id

Browse Source 
Check the MPEG version ID for the reserved bit pattern 01, and abort the
header check in that case. This reduces the chance of misinterpreting
arbitrary data as a valid header, and prevents resulting audio artifacts.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Karsten Otto 2018-07-08 12:26:10 +02:00 committed by Michael Niedermayer
parent eb776a16ea
commit 3bf39f2aef
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/mpegaudiodecheader.h
View File

@ -62,6 +62,9 @@ static inline int ff_mpa_check_header(uint32_t header){
/* header */
if ((header & 0xffe00000) != 0xffe00000)
return -1;
/* version check */
if ((header & (3<<19)) == 1)
return -1;
/* layer check */
if ((header & (3<<17)) == 0)
return -1;