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-rw-r--r--libavcodec/dfpwmdec.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/dfpwmdec.c b/libavcodec/dfpwmdec.c
index 27b60a4ea4..e11f393ee4 100644
--- a/libavcodec/dfpwmdec.c
+++ b/libavcodec/dfpwmdec.c
@@ -106,7 +106,10 @@ static int dfpwm_dec_frame(struct AVCodecContext *ctx, void *data,
AVFrame *frame = data;
int ret;
- frame->nb_samples = packet->size * 8 / ctx->ch_layout.nb_channels;
+ if (packet->size * 8LL % ctx->ch_layout.nb_channels)
+ return AVERROR_PATCHWELCOME;
+
+ frame->nb_samples = packet->size * 8LL / ctx->ch_layout.nb_channels;
if (frame->nb_samples <= 0) {
av_log(ctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
return AVERROR_INVALIDDATA;