[FFmpeg-devel] [PATCH 3/3] Add av_copy_packet()

[Andrey Utkin]

This function makes full deep copy of AVPacket contents
---
 libavcodec/avcodec.h  |    7 +++++++
 libavcodec/avpacket.c |   22 ++++++++++++++++++++++
 2 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 62a261a..783ac96 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3666,6 +3666,13 @@ 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.
  *
  * @param pkt packet to free
diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c
index 270fe7e..124024f 100644
--- a/libavcodec/avpacket.c
+++ b/libavcodec/avpacket.c
@@ -156,6 +156,28 @@ failed_alloc:
     return AVERROR(ENOMEM);
 }
 
+int av_copy_packet(AVPacket *dst, AVPacket *src) {
+    *dst = *src;
+    dst->destruct = av_destruct_packet;
+    if (src->size)
+        DUP_DATA(dst->data, src->data, src->size, 1);
+    if (src->side_data_elems) {
+        int i;
+        dst->side_data = av_mallocz(dst->side_data_elems * sizeof(*dst->side_data));
+        for (i = 0; i < src->side_data_elems; i++) {
+            DUP_DATA(dst->side_data[i].data, src->side_data[i].data,
+                    src->side_data[i].size, 1);
+            dst->side_data[i].size = src->side_data[i].size;
+            dst->side_data[i].type = src->side_data[i].type;
+        }
+    }
+    return 0;
+
+failed_alloc:
+    av_destruct_packet(dst);
+    return AVERROR(ENOMEM);
+}
+
 void av_free_packet(AVPacket *pkt)
 {
     if (pkt) {
-- 
1.7.8.6