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rtpjitterbuffer: reorganize jitterbuffer items

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Keep the oldest item at the head and the newest items on the tail. This
makes it easier to deal with -1 seqnums.
This commit is contained in:
Wim Taymans 2013-12-10 11:01:03 +01:00
parent ea2a222cef
commit 4a2e0f4ff4
1 changed files with 12 additions and 13 deletions
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25
gst/rtpmanager/rtpjitterbuffer.c
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@ -251,20 +251,20 @@ get_buffer_level (RTPJitterBuffer * jbuf)
guint64 level;
/* first first buffer with timestamp */
high_buf = (RTPJitterBufferItem *) g_queue_peek_head_link (jbuf->packets);
high_buf = (RTPJitterBufferItem *) g_queue_peek_tail_link (jbuf->packets);
while (high_buf) {
if (high_buf->dts != -1)
break;
high_buf = (RTPJitterBufferItem *) g_list_next (high_buf);
high_buf = (RTPJitterBufferItem *) g_list_previous (high_buf);
}
low_buf = (RTPJitterBufferItem *) g_queue_peek_tail_link (jbuf->packets);
low_buf = (RTPJitterBufferItem *) g_queue_peek_head_link (jbuf->packets);
while (low_buf) {
if (low_buf->dts != -1)
break;
low_buf = (RTPJitterBufferItem *) g_list_previous (low_buf);
low_buf = (RTPJitterBufferItem *) g_list_next (low_buf);
}
if (!high_buf || !low_buf || high_buf == low_buf) {
@ -655,7 +655,6 @@ rtp_jitter_buffer_insert (RTPJitterBuffer * jbuf, RTPJitterBufferItem * item,
/* no seqnum, simply append then */
if (item->seqnum == -1) {
list = jbuf->packets->head;
goto append;
}
@ -679,8 +678,8 @@ rtp_jitter_buffer_insert (RTPJitterBuffer * jbuf, RTPJitterBufferItem * item,
if (G_UNLIKELY (gap == 0))
goto duplicate;
/* seqnum > qseq, we can stop looking */
if (G_LIKELY (gap < 0))
/* seqnum < qseq, we can stop looking */
if (G_LIKELY (gap > 0))
break;
}
@ -781,13 +780,13 @@ rtp_jitter_buffer_pop (RTPJitterBuffer * jbuf, gint * percent)
queue = jbuf->packets;
item = queue->tail;
item = queue->head;
if (item) {
queue->tail = item->prev;
if (queue->tail)
queue->tail->next = NULL;
queue->head = item->next;
if (queue->head)
queue->head->prev = NULL;
else
queue->head = NULL;
queue->tail = NULL;
queue->length--;
}
@ -815,7 +814,7 @@ rtp_jitter_buffer_peek (RTPJitterBuffer * jbuf)
{
g_return_val_if_fail (jbuf != NULL, NULL);
return (RTPJitterBufferItem *) jbuf->packets->tail;
return (RTPJitterBufferItem *) jbuf->packets->head;
}
/**