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-rw-r--r--libavcodec/internal.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 403fb4a090..0efe34f667 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -285,4 +285,14 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame);
*/
AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx);
+#if defined(_MSC_VER) && CONFIG_SHARED
+#ifdef BUILDING_avcodec
+# define av_export_avcodec __declspec(dllexport)
+#else
+# define av_export_avcodec __declspec(dllimport)
+#endif
+#else
+# define av_export_avcodec
+#endif
+
#endif /* AVCODEC_INTERNAL_H */