avresample: prevent theoretical division by zero

CC: libav-stable@libav.org Bug-Id: CID 1231986
10 years ago · 088eca2816
parent 0d989dbfc4
commit 088eca2816
1 changed files with 4 additions and 1 deletions
--- a/libavresample/utils.c
+++ b/libavresample/utils.c
@ -585,9 +585,12 @@ static inline int convert_frame(AVAudioResampleContext *avr,

 static inline int available_samples(AVFrame *out)
 {
+    int samples;
    int bytes_per_sample = av_get_bytes_per_sample(out->format);
-    int samples = out->linesize[0] / bytes_per_sample;
+    if (!bytes_per_sample)
+        return AVERROR(EINVAL);

+    samples = out->linesize[0] / bytes_per_sample;
    if (av_sample_fmt_is_planar(out->format)) {
        return samples;
    } else {