adxdec: Validate channel count to fix a division by zero.

6fd075f1 · Justin Ruggles · 4f1a7877 · 6fd075f1
Commit 6fd075f1 authored Dec 19, 2011 by Justin Ruggles
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adx.c libavcodec/adx.c +1 -1

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--- a/libavcodec/adx.c
+++ b/libavcodec/adx.c
@@ -58,7 +58,7 @@ int avpriv_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,

    /* channels */
    avctx->channels = buf[7];
-    if (avctx->channels > 2)
+    if (avctx->channels <= 0 || avctx->channels > 2)
        return AVERROR_INVALIDDATA;

    /* sample rate */