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-rw-r--r--libavcodec/adpcm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index e305220af5..cee1eed7bd 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -340,6 +340,9 @@ static int get_nb_samples(AVCodecContext *avctx, const uint8_t *buf,
*coded_samples = 0;
+ if(ch <= 0)
+ return 0;
+
switch (avctx->codec->id) {
/* constant, only check buf_size */
case CODEC_ID_ADPCM_EA_XAS: