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-rw-r--r--libavcodec/wmaprodec.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 66f27c86f3..d906f900f4 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -277,6 +277,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
int log2_max_num_subframes;
int num_possible_block_sizes;
+ if (!avctx->block_align) {
+ av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
+ return AVERROR(EINVAL);
+ }
+
s->avctx = avctx;
avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);