avformat/utils: Check bps before using it in a shift in ff_get_pcm_codec_id()

Fixes undefined shift Fixes: usan_shift Found-by: Thomas Guilbert <tguilbert@google.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · ea791c080d
parent 8efaee3710
commit ea791c080d
1 changed files with 3 additions and 0 deletions
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@ -2955,6 +2955,9 @@ enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)

 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
 {
+    if (bps > 64U)
+        return AV_CODEC_ID_NONE;
+
    if (flt) {
        switch (bps) {
        case 32: