avdevice/decklink_dec: fix multipacket op47 decoding

[ffmpeg] / libavcodec / dxv.c

diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c
index 6f3c075d06be75e39395de2dff434a80bfb93a4f..529e2112589e347691f56017db98f4faa25eae02 100644 (file)
--- a/libavcodec/dxv.c
+++ b/libavcodec/dxv.c
@@ -197,6 +197,8 @@ static int dxv_decompress_dxt5(AVCodecContext *avctx)
             AV_WL32(ctx->tex_data + 4 * pos, prev);
             pos++;
         } else {
+            if (bytestream2_get_bytes_left(gbc) < 1)
+                return AVERROR_INVALIDDATA;
             if (state == 0) {
                 value = bytestream2_get_le32(gbc);
                 state = 16;