@@ -22,7 +22,7 @@

 #define AVFORMAT_AVFORMAT_H

 #define LIBAVFORMAT_VERSION_MAJOR 52

-#define LIBAVFORMAT_VERSION_MINOR 84

+#define LIBAVFORMAT_VERSION_MINOR 85

 #define LIBAVFORMAT_VERSION_MICRO  0

 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \

@@ -245,6 +245,21 @@ void av_metadata_free(AVMetadata **m);

 int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);

+/**

+ * Reads data and appends it to the current content of the AVPacket.

+ * If pkt->size is 0 it behaves like av_get_packet.

+ * Note that this uses av_grow_packet and thus involves a realloc

+ * which is inefficient. Thus this function should only be used

+ * when there is no reasonable way to know (an upper bound of)

+ * the final size.

+ *

+ * @param pkt packet

+ * @param size amount of data to read

+ * @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data

+ *         will not be lost even if an error occurs.

+ */

+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size);

+

 /*************************************************/

 /* fractional numbers for exact pts handling */

@@ -339,6 +339,21 @@ int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)

     return ret;

 }

+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size)

+{

+    int ret;

+    int old_size;

+    if (!pkt->size)

+        return av_get_packet(s, pkt, size);

+    old_size = pkt->size;

+    ret = av_grow_packet(pkt, size);

+    if (ret < 0)

+        return ret;

+    ret = get_buffer(s, pkt->data + old_size, size);

+    av_shrink_packet(pkt, old_size + FFMAX(ret, 0));

+    return ret;

+}

+

 int av_filename_number_test(const char *filename)

 {