Add av_copy_packet()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/avcodec.h

@@ -3668,6 +3668,13 @@ int av_grow_packet(AVPacket *pkt, int grow_by);
  */
 int av_dup_packet(AVPacket *pkt);
 
+/**
+ * Copy packet, including contents
+ *
+ * @return 0 on success, negative AVERROR on fail
+ */
+int av_copy_packet(AVPacket *dst, AVPacket *src);
+
 /**
  * Free a packet.
  *

libavcodec/avpacket.c

@@ -165,6 +165,12 @@ int av_dup_packet(AVPacket *pkt)
     return 0;
 }
 
+int av_copy_packet(AVPacket *dst, AVPacket *src)
+{
+    *dst = *src;
+    return copy_packet_data(dst, src);
+}
+
 void av_free_packet(AVPacket *pkt)
 {
     if (pkt) {

libavcodec/version.h

@@ -27,7 +27,7 @@
  */
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR 56
+#define LIBAVCODEC_VERSION_MINOR 57
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \