utils: Add av_stream_add_side_data()

Functionally similar to av_packet_add_side_data(). Allows the use of an
already allocated buffer as stream side data.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 65c3d90d4b..547b88b2f1 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1400,6 +1400,21 @@ const AVClass *avformat_get_class(void);
 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c);
 
 /**
+ * Wrap an existing array as stream side data.
+ *
+ * @param st stream
+ * @param type side information type
+ * @param data the side data array. It must be allocated with the av_malloc()
+ *             family of functions. The ownership of the data is transferred to
+ *             st.
+ * @param size side information size
+ * @return zero on success, a negative AVERROR code on failure. On failure,
+ *         the stream is unchanged and the data remains owned by the caller.
+ */
+int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
+                            uint8_t *data, size_t size);
+
+/**
  * Allocate new information from stream.
  *
  * @param stream stream