@@ -546,6 +546,7 @@ int avpriv_packet_list_put(PacketList *packet_buffer,
int flags)
{
PacketListEntry *pktl = av_malloc(sizeof(*pktl));
+ unsigned int update_end_point = 1;
int ret;
if (!pktl)
@@ -569,13 +570,22 @@ int avpriv_packet_list_put(PacketList *packet_buffer,
pktl->next = NULL;
- if (packet_buffer->head)
- packet_buffer->tail->next = pktl;
- else
+ if (packet_buffer->head) {
+ if (flags & FF_PACKETLIST_FLAG_PREPEND) {
+ pktl->next = packet_buffer->head;
+ packet_buffer->head = pktl;
+ update_end_point = 0;
+ } else {
+ packet_buffer->tail->next = pktl;
+ }
+ } else
packet_buffer->head = pktl;
- /* Add the packet in the buffered packet list. */
- packet_buffer->tail = pktl;
+ if (update_end_point) {
+ /* Add the packet in the buffered packet list. */
+ packet_buffer->tail = pktl;
+ }
+
return 0;
}
@@ -34,6 +34,8 @@ typedef struct PacketList {
PacketListEntry *head, *tail;
} PacketList;
+#define FF_PACKETLIST_FLAG_PREPEND (1 << 0) /**< Prepend created AVPacketList instead of appending */
+
/**
* Append an AVPacket to the list.
*