mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-18 22:36:33 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/rtpmanager/: Remove complicated async queue and replace with more simple jitterbuffer code while also fixing some...

Browse source 
Original commit message from CVS:
* gst/rtpmanager/Makefile.am:
* gst/rtpmanager/async_jitter_queue.c:
* gst/rtpmanager/async_jitter_queue.h:
* gst/rtpmanager/rtpjitterbuffer.c: (rtp_jitter_buffer_class_init),
(rtp_jitter_buffer_init), (rtp_jitter_buffer_finalize),
(rtp_jitter_buffer_new), (compare_seqnum),
(rtp_jitter_buffer_insert), (rtp_jitter_buffer_pop),
(rtp_jitter_buffer_flush), (rtp_jitter_buffer_num_packets),
(rtp_jitter_buffer_get_ts_diff):
* gst/rtpmanager/rtpjitterbuffer.h:
Remove complicated async queue and replace with more simple jitterbuffer
code while also fixing some bugs.
* gst/rtpmanager/gstrtpbin-marshal.list:
* gst/rtpmanager/gstrtpbin.c: (on_new_ssrc), (on_ssrc_collision),
(on_ssrc_validated), (on_bye_ssrc), (on_bye_timeout), (on_timeout),
(create_session), (gst_rtp_bin_class_init), (create_recv_rtp),
(create_send_rtp):
* gst/rtpmanager/gstrtpbin.h:
* gst/rtpmanager/gstrtpjitterbuffer.c:
(gst_rtp_jitter_buffer_init), (gst_rtp_jitter_buffer_dispose),
(gst_jitter_buffer_sink_parse_caps),
(gst_rtp_jitter_buffer_flush_start),
(gst_rtp_jitter_buffer_flush_stop),
(gst_rtp_jitter_buffer_change_state),
(gst_rtp_jitter_buffer_sink_event), (gst_rtp_jitter_buffer_chain),
(gst_rtp_jitter_buffer_loop), (gst_rtp_jitter_buffer_set_property):
* gst/rtpmanager/gstrtpsession.c: (on_new_ssrc),
(on_ssrc_collision), (on_ssrc_validated), (on_bye_ssrc),
(on_bye_timeout), (on_timeout), (gst_rtp_session_class_init),
(gst_rtp_session_init):
* gst/rtpmanager/gstrtpsession.h:
* gst/rtpmanager/rtpsession.c: (on_bye_ssrc), (session_cleanup):
Use new jitterbuffer code.
Expose some new signals in preparation for handling EOS.
This commit is contained in:
Wim Taymans 2007-08-10 17:16:53 +00:00
parent a9090746e5
commit 9e50d836d4
13 changed files with 748 additions and 965 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
ChangeLog
View file

@ -1,3 +1,41 @@
2007-08-10 Wim Taymans <wim.taymans@gmail.com>
* gst/rtpmanager/Makefile.am:
* gst/rtpmanager/async_jitter_queue.c:
* gst/rtpmanager/async_jitter_queue.h:
* gst/rtpmanager/rtpjitterbuffer.c: (rtp_jitter_buffer_class_init),
(rtp_jitter_buffer_init), (rtp_jitter_buffer_finalize),
(rtp_jitter_buffer_new), (compare_seqnum),
(rtp_jitter_buffer_insert), (rtp_jitter_buffer_pop),
(rtp_jitter_buffer_flush), (rtp_jitter_buffer_num_packets),
(rtp_jitter_buffer_get_ts_diff):
* gst/rtpmanager/rtpjitterbuffer.h:
Remove complicated async queue and replace with more simple jitterbuffer
code while also fixing some bugs.
* gst/rtpmanager/gstrtpbin-marshal.list:
* gst/rtpmanager/gstrtpbin.c: (on_new_ssrc), (on_ssrc_collision),
(on_ssrc_validated), (on_bye_ssrc), (on_bye_timeout), (on_timeout),
(create_session), (gst_rtp_bin_class_init), (create_recv_rtp),
(create_send_rtp):
* gst/rtpmanager/gstrtpbin.h:
* gst/rtpmanager/gstrtpjitterbuffer.c:
(gst_rtp_jitter_buffer_init), (gst_rtp_jitter_buffer_dispose),
(gst_jitter_buffer_sink_parse_caps),
(gst_rtp_jitter_buffer_flush_start),
(gst_rtp_jitter_buffer_flush_stop),
(gst_rtp_jitter_buffer_change_state),
(gst_rtp_jitter_buffer_sink_event), (gst_rtp_jitter_buffer_chain),
(gst_rtp_jitter_buffer_loop), (gst_rtp_jitter_buffer_set_property):
* gst/rtpmanager/gstrtpsession.c: (on_new_ssrc),
(on_ssrc_collision), (on_ssrc_validated), (on_bye_ssrc),
(on_bye_timeout), (on_timeout), (gst_rtp_session_class_init),
(gst_rtp_session_init):
* gst/rtpmanager/gstrtpsession.h:
* gst/rtpmanager/rtpsession.c: (on_bye_ssrc), (session_cleanup):
Use new jitterbuffer code.
Expose some new signals in preparation for handling EOS.
2007-08-10 Sebastian Dröge <slomo@circular-chaos.org>
* gst/filter/gstbpwsinc.c: (bpwsinc_build_kernel):

4
gst/rtpmanager/Makefile.am
View file

@ -13,10 +13,10 @@ BUILT_SOURCES = $(built_sources) $(built_headers)
libgstrtpmanager_la_SOURCES = gstrtpmanager.c \
gstrtpbin.c \
gstrtpclient.c \
async_jitter_queue.c \
gstrtpjitterbuffer.c \
gstrtpptdemux.c \
gstrtpssrcdemux.c \
rtpjitterbuffer.c \
rtpsession.c \
rtpsource.c \
rtpstats.c \
@ -27,10 +27,10 @@ nodist_libgstrtpmanager_la_SOURCES = \
noinst_HEADERS = gstrtpbin.h \
gstrtpclient.h \
async_jitter_queue.h \
gstrtpjitterbuffer.h \
gstrtpptdemux.h \
gstrtpssrcdemux.h \
rtpjitterbuffer.h \
rtpsession.h \
rtpsource.h \
rtpstats.h \

692
gst/rtpmanager/async_jitter_queue.c
View file

@ -1,692 +0,0 @@
/*
* Async Jitter Queue based on g_async_queue
* This code is GST RTP smart and deals with timestamps
*
* Farsight Voice+Video library
* Copyright 2007 Collabora Ltd,
* Copyright 2007 Nokia Corporation
* @author: Philippe Khalaf <philippe.khalaf@collabora.co.uk>.
*
* This is an async queue that has a buffering mecanism based on the set low
* and high threshold. When the lower threshold is reached, the queue will
* fill itself up until the higher threshold is reached before allowing any
* pops to occur. This allows a jitterbuffer of at least min threshold items
* to be available.
*/
/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GAsyncQueue: asynchronous queue implementation, based on Gqueue.
* Copyright (C) 2000 Sebastian Wilhelmi; University of Karlsruhe
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* MT safe
*/
#include "config.h"
#include "async_jitter_queue.h"
#include <gst/gst.h>
#include <gst/rtp/gstrtpbuffer.h>
#define DEFAULT_LOW_THRESHOLD 0.1
#define DEFAULT_HIGH_THRESHOLD 0.9
struct _AsyncJitterQueue
{
GMutex *mutex;
GCond *cond;
GQueue *queue;
guint waiting_threads;
gint32 ref_count;
gfloat low_threshold;
gfloat high_threshold;
guint32 max_queue_length;
gboolean buffering;
gboolean pop_flushing;
gboolean pop_blocking;
guint pops_remaining;
guint32 tail_buffer_duration;
};
/**
* async_jitter_queue_new:
*
* Creates a new asynchronous queue with the initial reference count of 1.
*
* Return value: the new #AsyncJitterQueue.
**/
AsyncJitterQueue *
async_jitter_queue_new (void)
{
AsyncJitterQueue *retval = g_new (AsyncJitterQueue, 1);
retval->mutex = g_mutex_new ();
retval->cond = g_cond_new ();
retval->queue = g_queue_new ();
retval->waiting_threads = 0;
retval->ref_count = 1;
retval->low_threshold = DEFAULT_LOW_THRESHOLD;
retval->high_threshold = DEFAULT_HIGH_THRESHOLD;
retval->buffering = TRUE; /* we need to buffer initially */
retval->pop_flushing = TRUE;
retval->pop_blocking = TRUE;
retval->pops_remaining = 0;
retval->tail_buffer_duration = 0;
return retval;
}
/* checks buffering state and wakes up waiting pops */
void
signal_waiting_threads (AsyncJitterQueue * queue)
{
if (async_jitter_queue_length_ts_units_unlocked (queue) >=
queue->high_threshold * queue->max_queue_length) {
GST_DEBUG ("stop buffering");
queue->buffering = FALSE;
}
if (queue->waiting_threads > 0) {
if (!queue->buffering) {
g_cond_signal (queue->cond);
}
}
}
/**
* async_jitter_queue_ref:
* @queue: a #AsyncJitterQueue.
*
* Increases the reference count of the asynchronous @queue by 1. You
* do not need to hold the lock to call this function.
*
* Returns: the @queue that was passed in (since 2.6)
**/
AsyncJitterQueue *
async_jitter_queue_ref (AsyncJitterQueue * queue)
{
g_return_val_if_fail (queue, NULL);
g_return_val_if_fail (g_atomic_int_get (&queue->ref_count) > 0, NULL);
g_atomic_int_inc (&queue->ref_count);
return queue;
}
/**
* async_jitter_queue_ref_unlocked:
* @queue: a #AsyncJitterQueue.
*
* Increases the reference count of the asynchronous @queue by 1.
**/
void
async_jitter_queue_ref_unlocked (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_atomic_int_inc (&queue->ref_count);
}
/**
* async_jitter_queue_set_low_threshold:
* @queue: a #AsyncJitterQueue.
* @threshold: the lower threshold (fraction of max size)
*
* Sets the low threshold on the queue. This threshold indicates the minimum
* number of items allowed in the queue before we refill it up to the set
* maximum threshold.
**/
void
async_jitter_queue_set_low_threshold (AsyncJitterQueue * queue,
gfloat threshold)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->low_threshold = threshold;
}
/**
* async_jitter_queue_set_max_threshold:
* @queue: a #AsyncJitterQueue.
* @threshold: the higher threshold (fraction of max size)
*
* Sets the high threshold on the queue. This threshold indicates the amount of
* items to fill in the queue before releasing any blocking pop calls. This
* blocking mecanism is only triggered when we reach the low threshold and must
* refill the queue.
**/
void
async_jitter_queue_set_high_threshold (AsyncJitterQueue * queue,
gfloat threshold)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->high_threshold = threshold;
}
/* set the maximum queue length in RTP timestamp units */
void
async_jitter_queue_set_max_queue_length (AsyncJitterQueue * queue,
guint32 max_length)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->max_queue_length = max_length;
}
GQueue *
async_jitter_queue_get_g_queue (AsyncJitterQueue * queue)
{
g_return_val_if_fail (queue, NULL);
return queue->queue;
}
static guint32
calculate_ts_diff (guint32 high_ts, guint32 low_ts)
{
/* it needs to work if ts wraps */
if (high_ts >= low_ts) {
return high_ts - low_ts;
} else {
return high_ts + G_MAXUINT32 + 1 - low_ts;
}
}
/* this function returns the length of the queue in timestamp units. It will
* also add the duration of the last buffer in the queue */
/* FIXME This function wrongly assumes that there are no missing packets inside
* the buffer, in reality it needs to check for gaps and subsctract those from
* the total */
guint32
async_jitter_queue_length_ts_units_unlocked (AsyncJitterQueue * queue)
{
guint32 tail_ts;
guint32 head_ts;
guint32 ret;
GstBuffer *head;
GstBuffer *tail;
g_return_val_if_fail (queue, 0);
if (queue->queue->length < 2) {
return 0;
}
tail = g_queue_peek_tail (queue->queue);
head = g_queue_peek_head (queue->queue);
if (!GST_IS_BUFFER (tail) || !GST_IS_BUFFER (head))
return 0;
tail_ts = gst_rtp_buffer_get_timestamp (tail);
head_ts = gst_rtp_buffer_get_timestamp (head);
ret = calculate_ts_diff (head_ts, tail_ts);
/* let's add the duration of the tail buffer */
ret += queue->tail_buffer_duration;
return ret;
}
/**
* async_jitter_queue_unref_and_unlock:
* @queue: a #AsyncJitterQueue.
*
* Decreases the reference count of the asynchronous @queue by 1 and
* releases the lock. This function must be called while holding the
* @queue's lock. If the reference count went to 0, the @queue will be
* destroyed and the memory allocated will be freed.
**/
void
async_jitter_queue_unref_and_unlock (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_mutex_unlock (queue->mutex);
async_jitter_queue_unref (queue);
}
/**
* async_jitter_queue_unref:
* @queue: a #AsyncJitterQueue.
*
* Decreases the reference count of the asynchronous @queue by 1. If
* the reference count went to 0, the @queue will be destroyed and the
* memory allocated will be freed. So you are not allowed to use the
* @queue afterwards, as it might have disappeared. You do not need to
* hold the lock to call this function.
**/
void
async_jitter_queue_unref (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
if (g_atomic_int_dec_and_test (&queue->ref_count)) {
g_return_if_fail (queue->waiting_threads == 0);
g_mutex_free (queue->mutex);
if (queue->cond)
g_cond_free (queue->cond);
g_queue_free (queue->queue);
g_free (queue);
}
}
/**
* async_jitter_queue_lock:
* @queue: a #AsyncJitterQueue.
*
* Acquires the @queue's lock. After that you can only call the
* <function>async_jitter_queue_*_unlocked()</function> function variants on that
* @queue. Otherwise it will deadlock.
**/
void
async_jitter_queue_lock (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_mutex_lock (queue->mutex);
}
/**
* async_jitter_queue_unlock:
* @queue: a #AsyncJitterQueue.
*
* Releases the queue's lock.
**/
void
async_jitter_queue_unlock (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_mutex_unlock (queue->mutex);
}
/**
* async_jitter_queue_push:
* @queue: a #AsyncJitterQueue.
* @data: @data to push into the @queue.
*
* Pushes the @data into the @queue. @data must not be %NULL.
**/
void
async_jitter_queue_push (AsyncJitterQueue * queue, gpointer data)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_return_if_fail (data);
g_mutex_lock (queue->mutex);
async_jitter_queue_push_unlocked (queue, data);
g_mutex_unlock (queue->mutex);
}
/**
* async_jitter_queue_push_unlocked:
* @queue: a #AsyncJitterQueue.
* @data: @data to push into the @queue.
*
* Pushes the @data into the @queue. @data must not be %NULL. This
* function must be called while holding the @queue's lock.
**/
void
async_jitter_queue_push_unlocked (AsyncJitterQueue * queue, gpointer data)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
g_return_if_fail (data);
g_queue_push_head (queue->queue, data);
signal_waiting_threads (queue);
}
/**
* async_jitter_queue_push_sorted:
* @queue: a #AsyncJitterQueue
* @data: the @data to push into the @queue
* @func: the #GCompareDataFunc is used to sort @queue. This function
* is passed two elements of the @queue. The function should return
* 0 if they are equal, a negative value if the first element
* should be higher in the @queue or a positive value if the first
* element should be lower in the @queue than the second element.
* @user_data: user data passed to @func.
*
* Inserts @data into @queue using @func to determine the new
* position.
*
* This function requires that the @queue is sorted before pushing on
* new elements.
*
* This function will lock @queue before it sorts the queue and unlock
* it when it is finished.
*
* For an example of @func see async_jitter_queue_sort().
*
* Since: 2.10
**/
gboolean
async_jitter_queue_push_sorted (AsyncJitterQueue * queue,
gpointer data, GCompareDataFunc func, gpointer user_data)
{
gboolean ret;
g_return_val_if_fail (queue != NULL, FALSE);
g_mutex_lock (queue->mutex);
ret = async_jitter_queue_push_sorted_unlocked (queue, data, func, user_data);
g_mutex_unlock (queue->mutex);
return ret;
}
/**
* async_jitter_queue_push_sorted_unlocked:
* @queue: a #AsyncJitterQueue
* @data: the @data to push into the @queue
* @func: the #GCompareDataFunc is used to sort @queue. This function
* is passed two elements of the @queue. The function should return
* 0 if they are equal, a negative value if the first element
* should be higher in the @queue or a positive value if the first
* element should be lower in the @queue than the second element.
* @user_data: user data passed to @func.
*
* Inserts @data into @queue using @func to determine the new
* position.
*
* This function requires that the @queue is sorted before pushing on
* new elements.
*
* If @GCompareDataFunc returns 0, this function does not insert @data and
* return FALSE.
*
* This function is called while holding the @queue's lock.
*
* For an example of @func see async_jitter_queue_sort().
*
* Since: 2.10
**/
gboolean
async_jitter_queue_push_sorted_unlocked (AsyncJitterQueue * queue,
gpointer data, GCompareDataFunc func, gpointer user_data)
{
GList *list;
gint func_ret = TRUE;
g_return_val_if_fail (queue != NULL, FALSE);
list = queue->queue->head;
while (list && (func_ret = func (list->data, data, user_data)) < 0)
list = list->next;
if (func_ret == 0) {
return FALSE;
}
if (list) {
g_queue_insert_before (queue->queue, list, data);
} else {
g_queue_push_tail (queue->queue, data);
}
signal_waiting_threads (queue);
return TRUE;
}
void
async_jitter_queue_insert_after_unlocked (AsyncJitterQueue * queue,
GList * sibling, gpointer data)
{
g_return_if_fail (queue != NULL);
g_queue_insert_before (queue->queue, sibling, data);
signal_waiting_threads (queue);
}
static gpointer
async_jitter_queue_pop_intern_unlocked (AsyncJitterQueue * queue)
{
gpointer retval;
GstBuffer *tail_buffer = NULL;
guint tsunits;
if (queue->pop_flushing)
return NULL;
while (queue->pop_blocking) {
queue->waiting_threads++;
g_cond_wait (queue->cond, queue->mutex);
queue->waiting_threads--;
if (queue->pop_flushing)
return NULL;
}
tsunits = async_jitter_queue_length_ts_units_unlocked (queue);
GST_DEBUG ("tsunits %u, pops: %u, limit %d", tsunits, queue->pops_remaining,
(int) (queue->low_threshold * queue->max_queue_length));
if (tsunits <= queue->low_threshold * queue->max_queue_length
&& queue->pops_remaining == 0) {
if (!queue->buffering) {
GST_DEBUG ("start buffering");
queue->buffering = TRUE;
queue->pops_remaining = queue->queue->length;
}
GST_DEBUG ("wait for data");
while (!g_queue_peek_tail (queue->queue) || queue->pop_blocking) {
queue->waiting_threads++;
g_cond_wait (queue->cond, queue->mutex);
queue->waiting_threads--;
if (queue->pop_flushing)
return NULL;
}
}
retval = g_queue_pop_tail (queue->queue);
if (queue->pops_remaining)
queue->pops_remaining--;
tail_buffer = g_queue_peek_tail (queue->queue);
if (tail_buffer) {
if (!GST_IS_BUFFER (tail_buffer) || !GST_IS_BUFFER (retval)) {
queue->tail_buffer_duration = 0;
} else if (gst_rtp_buffer_get_seq (tail_buffer)
- gst_rtp_buffer_get_seq (retval) == 1) {
queue->tail_buffer_duration =
calculate_ts_diff (gst_rtp_buffer_get_timestamp (tail_buffer),
gst_rtp_buffer_get_timestamp (retval));
} else {
/* There is a sequence number gap -> we can't calculate the duration
* let's just set it to 0 */
queue->tail_buffer_duration = 0;
}
}
g_assert (retval);
return retval;
}
/**
* async_jitter_queue_pop:
* @queue: a #AsyncJitterQueue.
*
* Pops data from the @queue. This function blocks until data become
* available. If pop is disabled, tis function return NULL.
*
* Return value: data from the queue.
**/
gpointer
async_jitter_queue_pop (AsyncJitterQueue * queue)
{
gpointer retval;
g_return_val_if_fail (queue, NULL);
g_return_val_if_fail (g_atomic_int_get (&queue->ref_count) > 0, NULL);
g_mutex_lock (queue->mutex);
retval = async_jitter_queue_pop_intern_unlocked (queue);
g_mutex_unlock (queue->mutex);
return retval;
}
/**
* async_jitter_queue_pop_unlocked:
* @queue: a #AsyncJitterQueue.
*
* Pops data from the @queue. This function blocks until data become
* available. This function must be called while holding the @queue's
* lock.
*
* Return value: data from the queue.
**/
gpointer
async_jitter_queue_pop_unlocked (AsyncJitterQueue * queue)
{
g_return_val_if_fail (queue, NULL);
g_return_val_if_fail (g_atomic_int_get (&queue->ref_count) > 0, NULL);
return async_jitter_queue_pop_intern_unlocked (queue);
}
/**
* async_jitter_queue_length:
* @queue: a #AsyncJitterQueue.
*
* Returns the length of the queue
* Return value: the length of the @queue.
**/
gint
async_jitter_queue_length (AsyncJitterQueue * queue)
{
gint retval;
g_return_val_if_fail (queue, 0);
g_return_val_if_fail (g_atomic_int_get (&queue->ref_count) > 0, 0);
g_mutex_lock (queue->mutex);
retval = queue->queue->length;
g_mutex_unlock (queue->mutex);
return retval;
}
/**
* async_jitter_queue_length_unlocked:
* @queue: a #AsyncJitterQueue.
*
* Returns the length of the queue.
*
* Return value: the length of the @queue.
**/
gint
async_jitter_queue_length_unlocked (AsyncJitterQueue * queue)
{
g_return_val_if_fail (queue, 0);
g_return_val_if_fail (g_atomic_int_get (&queue->ref_count) > 0, 0);
return queue->queue->length;
}
/**
* async_jitter_queue_set_flushing_unlocked:
* @queue: a #AsyncJitterQueue.
* @free_func: a function to call to free the elements
* @user_data: user data passed to @free_func
*
* This function is used to set/unset flushing. If flushing is set any
* waiting/blocked pops will be unblocked. Any subsequent calls to pop will
* return NULL. Flushing is set by default.
*/
void
async_jitter_queue_set_flushing_unlocked (AsyncJitterQueue * queue,
GFunc free_func, gpointer user_data)
{
gpointer elem;
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->pop_flushing = TRUE;
/* let's unblock any remaining pops */
if (queue->waiting_threads > 0)
g_cond_broadcast (queue->cond);
/* free data from queue */
while ((elem = g_queue_pop_head (queue->queue)))
free_func (elem, user_data);
}
/**
* async_jitter_queue_unset_flushing_unlocked:
* @queue: a #AsyncJitterQueue.
* @free_func: a function to call to free the elements
* @user_data: user data passed to @free_func
*
* This function is used to set/unset flushing. If flushing is set any
* waiting/blocked pops will be unblocked. Any subsequent calls to pop will
* return NULL. Flushing is set by default.
*/
void
async_jitter_queue_unset_flushing_unlocked (AsyncJitterQueue * queue)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->pop_flushing = FALSE;
/* let's unblock any remaining pops */
if (queue->waiting_threads > 0)
g_cond_broadcast (queue->cond);
}
/**
* async_jitter_queue_set_blocking_unlocked:
* @queue: a #AsyncJitterQueue.
* @enabled: a boolean to enable/disable blocking
*
* This function is used to enable/disable blocking. If blocking is enabled any
* pops will be blocked until the queue is unblocked. The queue is blocked by
* default.
*/
void
async_jitter_queue_set_blocking_unlocked (AsyncJitterQueue * queue,
gboolean blocking)
{
g_return_if_fail (queue);
g_return_if_fail (g_atomic_int_get (&queue->ref_count) > 0);
queue->pop_blocking = blocking;
/* let's unblock any remaining pops */
if (queue->waiting_threads > 0)
g_cond_broadcast (queue->cond);
}

130
gst/rtpmanager/async_jitter_queue.h
View file

@ -1,130 +0,0 @@
/* Async Jitter Queue based on g_async_queue
*
* Farsight Voice+Video library
* Copyright 2007 Collabora Ltd,
* Copyright 2007 Nokia Corporation
* @author: Philippe Khalaf <philippe.khalaf@collabora.co.uk>.
*/
/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __ASYNCJITTERQUEUE_H__
#define __ASYNCJITTERQUEUE_H__
#include <glib.h>
#include <glib/gthread.h>
G_BEGIN_DECLS
typedef struct _AsyncJitterQueue AsyncJitterQueue;
/* Asyncronous Queues, can be used to communicate between threads
*/
/* Get a new AsyncJitterQueue with the ref_count 1 */
AsyncJitterQueue* async_jitter_queue_new (void);
/* Lock and unlock a AsyncJitterQueue. All functions lock the queue for
* themselves, but in certain cirumstances you want to hold the lock longer,
* thus you lock the queue, call the *_unlocked functions and unlock it again.
*/
void async_jitter_queue_lock (AsyncJitterQueue *queue);
void async_jitter_queue_unlock (AsyncJitterQueue *queue);
/* Ref and unref the AsyncJitterQueue. */
AsyncJitterQueue* async_jitter_queue_ref (AsyncJitterQueue *queue);
void async_jitter_queue_unref (AsyncJitterQueue *queue);
#ifndef G_DISABLE_DEPRECATED
/* You don't have to hold the lock for calling *_ref and *_unref anymore. */
void async_jitter_queue_ref_unlocked (AsyncJitterQueue *queue);
void async_jitter_queue_unref_and_unlock (AsyncJitterQueue *queue);
#endif /* !G_DISABLE_DEPRECATED */
void async_jitter_queue_set_low_threshold (AsyncJitterQueue *queue,
gfloat threshold);
void async_jitter_queue_set_high_threshold (AsyncJitterQueue *queue,
gfloat threshold);
void async_jitter_queue_set_max_queue_length (AsyncJitterQueue *queue,
guint32 max_length);
/* Push data into the async queue. Must not be NULL. */
void async_jitter_queue_push (AsyncJitterQueue *queue,
gpointer data);
void async_jitter_queue_push_unlocked (AsyncJitterQueue *queue,
gpointer data);
gboolean async_jitter_queue_push_sorted (AsyncJitterQueue *queue,
gpointer data,
GCompareDataFunc func,
gpointer user_data);
void async_jitter_queue_insert_after_unlocked(AsyncJitterQueue *queue,
GList *sibling,
gpointer data);
gboolean async_jitter_queue_push_sorted_unlocked(AsyncJitterQueue *queue,
gpointer data,
GCompareDataFunc func,
gpointer user_data);
/* Pop data from the async queue. When no data is there, the thread is blocked
* until data arrives. */
gpointer async_jitter_queue_pop (AsyncJitterQueue *queue);
gpointer async_jitter_queue_pop_unlocked (AsyncJitterQueue *queue);
/* Try to pop data. NULL is returned in case of empty queue. */
gpointer async_jitter_queue_try_pop (AsyncJitterQueue *queue);
gpointer async_jitter_queue_try_pop_unlocked (AsyncJitterQueue *queue);
/* Wait for data until at maximum until end_time is reached. NULL is returned
* in case of empty queue. */
gpointer async_jitter_queue_timed_pop (AsyncJitterQueue *queue,
GTimeVal *end_time);
gpointer async_jitter_queue_timed_pop_unlocked (AsyncJitterQueue *queue,
GTimeVal *end_time);
/* Return the length of the queue. Negative values mean that threads
* are waiting, positve values mean that there are entries in the
* queue. Actually this function returns the length of the queue minus
* the number of waiting threads, async_jitter_queue_length == 0 could also
* mean 'n' entries in the queue and 'n' thread waiting. Such can
* happen due to locking of the queue or due to scheduling. */
gint async_jitter_queue_length (AsyncJitterQueue *queue);
gint async_jitter_queue_length_unlocked (AsyncJitterQueue *queue);
void async_jitter_queue_set_flushing_unlocked (AsyncJitterQueue* queue,
GFunc free_func, gpointer user_data);
void async_jitter_queue_unset_flushing_unlocked (AsyncJitterQueue* queue);
void async_jitter_queue_set_blocking_unlocked (AsyncJitterQueue* queue,
gboolean blocking);
guint32
async_jitter_queue_length_ts_units_unlocked (AsyncJitterQueue *queue);
G_END_DECLS
#endif /* __ASYNCJITTERQUEUE_H__ */

1
gst/rtpmanager/gstrtpbin-marshal.list
View file

@ -2,3 +2,4 @@ UINT:UINT
BOXED:UINT
BOXED:UINT,UINT
VOID:UINT,OBJECT
VOID:UINT,UINT

141
gst/rtpmanager/gstrtpbin.c
View file

@ -158,6 +158,13 @@ enum
{
SIGNAL_REQUEST_PT_MAP,
SIGNAL_CLEAR_PT_MAP,
SIGNAL_ON_NEW_SSRC,
SIGNAL_ON_SSRC_COLLISION,
SIGNAL_ON_SSRC_VALIDATED,
SIGNAL_ON_BYE_SSRC,
SIGNAL_ON_BYE_TIMEOUT,
SIGNAL_ON_TIMEOUT,
LAST_SIGNAL
};
@ -258,6 +265,48 @@ find_session_by_id (GstRTPBin * rtpbin, gint id)
return NULL;
}
static void
on_new_ssrc (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_NEW_SSRC], 0,
sess->id, ssrc);
}
static void
on_ssrc_collision (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_COLLISION], 0,
sess->id, ssrc);
}
static void
on_ssrc_validated (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_VALIDATED], 0,
sess->id, ssrc);
}
static void
on_bye_ssrc (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_BYE_SSRC], 0,
sess->id, ssrc);
}
static void
on_bye_timeout (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_BYE_TIMEOUT], 0,
sess->id, ssrc);
}
static void
on_timeout (GstElement * session, guint32 ssrc, GstRTPBinSession * sess)
{
g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_TIMEOUT], 0,
sess->id, ssrc);
}
/* create a session with the given id. Must be called with RTP_BIN_LOCK */
static GstRTPBinSession *
create_session (GstRTPBin * rtpbin, gint id)
@ -284,6 +333,18 @@ create_session (GstRTPBin * rtpbin, gint id)
g_signal_connect (session, "request-pt-map",
(GCallback) pt_map_requested, sess);
g_signal_connect (sess->session, "on-new-ssrc",
(GCallback) on_new_ssrc, sess);
g_signal_connect (sess->session, "on-ssrc-collision",
(GCallback) on_ssrc_collision, sess);
g_signal_connect (sess->session, "on-ssrc-validated",
(GCallback) on_ssrc_validated, sess);
g_signal_connect (sess->session, "on-bye-ssrc",
(GCallback) on_bye_ssrc, sess);
g_signal_connect (sess->session, "on-bye-timeout",
(GCallback) on_bye_timeout, sess);
g_signal_connect (sess->session, "on-timeout", (GCallback) on_timeout, sess);
gst_bin_add (GST_BIN_CAST (rtpbin), session);
gst_element_set_state (session, GST_STATE_PLAYING);
gst_bin_add (GST_BIN_CAST (rtpbin), demux);
@ -557,6 +618,86 @@ gst_rtp_bin_class_init (GstRTPBinClass * klass)
G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRTPBinClass, clear_pt_map),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
/**
* GstRTPBin::on-new-ssrc:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify of a new SSRC that entered @session.
*/
gst_rtp_bin_signals[SIGNAL_ON_NEW_SSRC] =
g_signal_new ("on-new-ssrc", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_new_ssrc),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRTPBin::on-ssrc_collision:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify when we have an SSRC collision
*/
gst_rtp_bin_signals[SIGNAL_ON_SSRC_COLLISION] =
g_signal_new ("on-ssrc-collision", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_ssrc_collision),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRTPBin::on-ssrc_validated:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify of a new SSRC that became validated.
*/
gst_rtp_bin_signals[SIGNAL_ON_SSRC_VALIDATED] =
g_signal_new ("on-ssrc-validated", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_ssrc_validated),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRTPBin::on-bye-ssrc:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify of an SSRC that became inactive because of a BYE packet.
*/
gst_rtp_bin_signals[SIGNAL_ON_BYE_SSRC] =
g_signal_new ("on-bye-ssrc", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_bye_ssrc),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRTPBin::on-bye-timeout:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify of an SSRC that has timed out because of BYE
*/
gst_rtp_bin_signals[SIGNAL_ON_BYE_TIMEOUT] =
g_signal_new ("on-bye-timeout", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_bye_timeout),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRTPBin::on-timeout:
* @rtpbin: the object which received the signal
* @session: the session
* @ssrc: the SSRC
*
* Notify of an SSRC that has timed out
*/
gst_rtp_bin_signals[SIGNAL_ON_TIMEOUT] =
g_signal_new ("on-timeout", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPBinClass, on_timeout),
NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
gstelement_class->provide_clock =
GST_DEBUG_FUNCPTR (gst_rtp_bin_provide_clock);
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rtp_bin_change_state);

8
gst/rtpmanager/gstrtpbin.h
View file

@ -57,8 +57,14 @@ struct _GstRTPBinClass {
/* get the caps for pt */
GstCaps* (*request_pt_map) (GstRTPBin *rtpbin, guint session, guint pt);
void (*clear_pt_map) (GstRTPBin *rtpbin);
void (*on_new_ssrc) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
void (*on_ssrc_collision) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
void (*on_ssrc_validated) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
void (*on_bye_ssrc) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
void (*on_bye_timeout) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
void (*on_timeout) (GstRTPBin *rtpbin, guint session, guint32 ssrc);
};
GType gst_rtp_bin_get_type (void);

253
gst/rtpmanager/gstrtpjitterbuffer.c
View file

@ -4,7 +4,7 @@
* Copyright 2007 Collabora Ltd,
* Copyright 2007 Nokia Corporation
* @author: Philippe Kalaf <philippe.kalaf@collabora.co.uk>.
* Copyright 2007 Wim Taymans <wim@fluendo.com>
* Copyright 2007 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -72,7 +72,7 @@
#include "gstrtpbin-marshal.h"
#include "gstrtpjitterbuffer.h"
#include "async_jitter_queue.h"
#include "rtpjitterbuffer.h"
GST_DEBUG_CATEGORY (rtpjitterbuffer_debug);
#define GST_CAT_DEFAULT (rtpjitterbuffer_debug)
@ -87,7 +87,7 @@ GST_ELEMENT_DETAILS ("RTP packet jitter-buffer",
"Filter/Network/RTP",
"A buffer that deals with network jitter and other transmission faults",
"Philippe Kalaf <philippe.kalaf@collabora.co.uk>, "
"Wim Taymans <wim@fluendo.com>");
"Wim Taymans <wim.taymans@gmail.com>");
/* RTPJitterBuffer signals and args */
enum
@ -107,11 +107,32 @@ enum
PROP_DROP_ON_LATENCY
};
#define JBUF_LOCK(priv) (g_mutex_lock ((priv)->jbuf_lock))
#define JBUF_LOCK_CHECK(priv,label) G_STMT_START { \
JBUF_LOCK (priv); \
if (priv->srcresult != GST_FLOW_OK) \
goto label; \
} G_STMT_END
#define JBUF_UNLOCK(priv) (g_mutex_unlock ((priv)->jbuf_lock))
#define JBUF_WAIT(priv) (g_cond_wait ((priv)->jbuf_cond, (priv)->jbuf_lock))
#define JBUF_WAIT_CHECK(priv,label) G_STMT_START { \
JBUF_WAIT(priv); \
if (priv->srcresult != GST_FLOW_OK) \
goto label; \
} G_STMT_END
#define JBUF_SIGNAL(priv) (g_cond_signal ((priv)->jbuf_cond))
struct _GstRTPJitterBufferPrivate
{
GstPad *sinkpad, *srcpad;
AsyncJitterQueue *queue;
RTPJitterBuffer *jbuf;
GMutex *jbuf_lock;
GCond *jbuf_cond;
/* properties */
guint latency_ms;
@ -122,12 +143,16 @@ struct _GstRTPJitterBufferPrivate
/* the next expected seqnum */
guint32 next_seqnum;
/* state */
gboolean eos;
/* clock rate and rtp timestamp offset */
gint32 clock_rate;
gint64 clock_base;
/* when we are shutting down */
GstFlowReturn srcresult;
gboolean blocked;
/* for sync */
GstSegment segment;
@ -292,9 +317,9 @@ gst_rtp_jitter_buffer_init (GstRTPJitterBuffer * jitterbuffer,
priv->latency_ms = DEFAULT_LATENCY_MS;
priv->drop_on_latency = DEFAULT_DROP_ON_LATENCY;
priv->queue = async_jitter_queue_new ();
async_jitter_queue_set_low_threshold (priv->queue, LOW_THRESHOLD);
async_jitter_queue_set_high_threshold (priv->queue, HIGH_THRESHOLD);
priv->jbuf = rtp_jitter_buffer_new ();
priv->jbuf_lock = g_mutex_new ();
priv->jbuf_cond = g_cond_new ();
priv->waiting_seqnum = -1;
@ -332,9 +357,9 @@ gst_rtp_jitter_buffer_dispose (GObject * object)
GstRTPJitterBuffer *jitterbuffer;
jitterbuffer = GST_RTP_JITTER_BUFFER (object);
if (jitterbuffer->priv->queue) {
async_jitter_queue_unref (jitterbuffer->priv->queue);
jitterbuffer->priv->queue = NULL;
if (jitterbuffer->priv->jbuf) {
g_object_unref (jitterbuffer->priv->jbuf);
jitterbuffer->priv->jbuf = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
@ -430,9 +455,6 @@ gst_jitter_buffer_sink_parse_caps (GstRTPJitterBuffer * jitterbuffer,
} else
priv->next_seqnum = -1;
async_jitter_queue_set_max_queue_length (priv->queue,
priv->latency_ms * priv->clock_rate / 1000);
return TRUE;
/* ERRORS */
@ -469,15 +491,6 @@ gst_jitter_buffer_sink_setcaps (GstPad * pad, GstCaps * caps)
return res;
}
static void
free_func (gpointer data, GstRTPJitterBuffer * user_data)
{
if (GST_IS_BUFFER (data))
gst_buffer_unref (GST_BUFFER_CAST (data));
else
gst_event_unref (GST_EVENT_CAST (data));
}
static void
gst_rtp_jitter_buffer_flush_start (GstRTPJitterBuffer * jitterbuffer)
{
@ -485,19 +498,18 @@ gst_rtp_jitter_buffer_flush_start (GstRTPJitterBuffer * jitterbuffer)
priv = jitterbuffer->priv;
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* mark ourselves as flushing */
priv->srcresult = GST_FLOW_WRONG_STATE;
GST_DEBUG_OBJECT (jitterbuffer, "Disabling pop on queue");
/* this unblocks any waiting pops on the src pad task */
async_jitter_queue_set_flushing_unlocked (jitterbuffer->priv->queue,
(GFunc) free_func, jitterbuffer);
JBUF_SIGNAL (priv);
rtp_jitter_buffer_flush (priv->jbuf);
/* unlock clock, we just unschedule, the entry will be released by the
* locking streaming thread. */
if (priv->clock_id)
gst_clock_id_unschedule (priv->clock_id);
async_jitter_queue_unlock (priv->queue);
JBUF_UNLOCK (priv);
}
static void
@ -507,7 +519,7 @@ gst_rtp_jitter_buffer_flush_stop (GstRTPJitterBuffer * jitterbuffer)
priv = jitterbuffer->priv;
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
GST_DEBUG_OBJECT (jitterbuffer, "Enabling pop on queue");
/* Mark as non flushing */
priv->srcresult = GST_FLOW_OK;
@ -515,9 +527,8 @@ gst_rtp_jitter_buffer_flush_stop (GstRTPJitterBuffer * jitterbuffer)
priv->last_popped_seqnum = -1;
priv->next_seqnum = -1;
priv->clock_rate = -1;
/* allow pops from the src pad task */
async_jitter_queue_unset_flushing_unlocked (jitterbuffer->priv->queue);
async_jitter_queue_unlock (priv->queue);
priv->eos = FALSE;
JBUF_UNLOCK (priv);
}
static gboolean
@ -566,21 +577,20 @@ gst_rtp_jitter_buffer_change_state (GstElement * element,
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* reset negotiated values */
priv->clock_rate = -1;
priv->clock_base = -1;
/* block until we go to PLAYING */
async_jitter_queue_set_blocking_unlocked (jitterbuffer->priv->queue,
TRUE);
async_jitter_queue_unlock (priv->queue);
priv->blocked = TRUE;
JBUF_UNLOCK (priv);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* unblock to allow streaming in PLAYING */
async_jitter_queue_set_blocking_unlocked (jitterbuffer->priv->queue,
FALSE);
async_jitter_queue_unlock (priv->queue);
priv->blocked = FALSE;
JBUF_SIGNAL (priv);
JBUF_UNLOCK (priv);
break;
default:
break;
@ -596,11 +606,10 @@ gst_rtp_jitter_buffer_change_state (GstElement * element,
ret = GST_STATE_CHANGE_NO_PREROLL;
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* block to stop streaming when PAUSED */
async_jitter_queue_set_blocking_unlocked (jitterbuffer->priv->queue,
TRUE);
async_jitter_queue_unlock (priv->queue);
priv->blocked = TRUE;
JBUF_UNLOCK (priv);
if (ret != GST_STATE_CHANGE_FAILURE)
ret = GST_STATE_CHANGE_NO_PREROLL;
break;
@ -630,30 +639,6 @@ priv_compare_rtp_seq_lt (guint16 a, guint16 b)
}
}
/**
* gets the seqnum from the buffers and compare them
*/
static gint
compare_rtp_buffers_seq_num (GstBuffer * a, GstBuffer * b)
{
gint ret;
if (GST_IS_BUFFER (a) && GST_IS_BUFFER (b)) {
/* two buffers */
ret = priv_compare_rtp_seq_lt
(gst_rtp_buffer_get_seq (GST_BUFFER_CAST (a)),
gst_rtp_buffer_get_seq (GST_BUFFER_CAST (b)));
} else {
/* one of them is an event, the event always goes before the other element
* so we return -1. */
if (GST_IS_EVENT (a))
ret = -1;
else
ret = 1;
}
return ret;
}
static gboolean
gst_rtp_jitter_buffer_sink_event (GstPad * pad, GstEvent * event)
{
@ -707,16 +692,20 @@ gst_rtp_jitter_buffer_sink_event (GstPad * pad, GstEvent * event)
case GST_EVENT_EOS:
{
/* push EOS in queue. We always push it at the head */
async_jitter_queue_lock (priv->queue);
GST_DEBUG_OBJECT (jitterbuffer, "queuing EOS");
JBUF_LOCK (priv);
/* check for flushing, we need to discard the event and return FALSE when
* we are flushing */
ret = priv->srcresult == GST_FLOW_OK;
if (ret)
async_jitter_queue_push_unlocked (priv->queue, event);
else
if (ret) {
GST_DEBUG_OBJECT (jitterbuffer, "queuing EOS");
priv->eos = TRUE;
JBUF_SIGNAL (priv);
} else {
GST_DEBUG_OBJECT (jitterbuffer, "dropping EOS, reason %s",
gst_flow_get_name (priv->srcresult));
gst_event_unref (event);
async_jitter_queue_unlock (priv->queue);
}
JBUF_UNLOCK (priv);
break;
}
default:
@ -780,7 +769,7 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstBuffer * buffer)
GstRTPJitterBuffer *jitterbuffer;
GstRTPJitterBufferPrivate *priv;
guint16 seqnum;
GstFlowReturn ret;
GstFlowReturn ret = GST_FLOW_OK;
jitterbuffer = GST_RTP_JITTER_BUFFER (gst_pad_get_parent (pad));
@ -803,10 +792,10 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstBuffer * buffer)
seqnum = gst_rtp_buffer_get_seq (buffer);
GST_DEBUG_OBJECT (jitterbuffer, "Received packet #%d", seqnum);
async_jitter_queue_lock (priv->queue);
ret = priv->srcresult;
if (ret != GST_FLOW_OK)
goto out_flushing;
JBUF_LOCK_CHECK (priv, out_flushing);
/* don't accept more data on EOS */
if (priv->eos)
goto have_eos;
/* let's check if this buffer is too late, we cannot accept packets with
* bigger seqnum than the one we already pushed. */
@ -818,14 +807,18 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstBuffer * buffer)
/* let's drop oldest packet if the queue is already full and drop-on-latency
* is set. */
if (priv->drop_on_latency) {
if (async_jitter_queue_length_ts_units_unlocked (priv->queue) >=
priv->latency_ms * priv->clock_rate / 1000) {
guint64 latency_ts;
latency_ts =
gst_util_uint64_scale_int (priv->latency_ms, priv->clock_rate, 1000);
if (rtp_jitter_buffer_get_ts_diff (priv->jbuf) >= latency_ts) {
GstBuffer *old_buf;
GST_DEBUG_OBJECT (jitterbuffer, "Queue full, dropping old packet #%d",
seqnum);
old_buf = async_jitter_queue_pop_unlocked (priv->queue);
old_buf = rtp_jitter_buffer_pop (priv->jbuf);
gst_buffer_unref (old_buf);
}
}
@ -833,10 +826,12 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstBuffer * buffer)
/* now insert the packet into the queue in sorted order. This function returns
* FALSE if a packet with the same seqnum was already in the queue, meaning we
* have a duplicate. */
if (!async_jitter_queue_push_sorted_unlocked (priv->queue, buffer,
(GCompareDataFunc) compare_rtp_buffers_seq_num, NULL))
if (!rtp_jitter_buffer_insert (priv->jbuf, buffer))
goto duplicate;
/* signal addition of new buffer */
JBUF_SIGNAL (priv);
/* let's unschedule and unblock any waiting buffers. We only want to do this
* if there is a currently waiting newer (> seqnum) buffer */
if (priv->clock_id) {
@ -846,11 +841,11 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstBuffer * buffer)
}
}
GST_DEBUG_OBJECT (jitterbuffer, "Pushed packet #%d on queue %d",
seqnum, async_jitter_queue_length_unlocked (priv->queue));
GST_DEBUG_OBJECT (jitterbuffer, "Pushed packet #%d, now %d packets",
seqnum, rtp_jitter_buffer_num_packets (priv->jbuf));
finished:
async_jitter_queue_unlock (priv->queue);
JBUF_UNLOCK (priv);
gst_object_unref (jitterbuffer);
@ -875,10 +870,18 @@ not_negotiated:
}
out_flushing:
{
ret = priv->srcresult;
GST_DEBUG_OBJECT (jitterbuffer, "flushing %s", gst_flow_get_name (ret));
gst_buffer_unref (buffer);
goto finished;
}
have_eos:
{
ret = GST_FLOW_UNEXPECTED;
GST_DEBUG_OBJECT (jitterbuffer, "we are EOS, refusing buffer");
gst_buffer_unref (buffer);
goto finished;
}
too_late:
{
GST_DEBUG_OBJECT (jitterbuffer, "Packet #%d too late as #%d was already"
@ -908,8 +911,7 @@ static void
gst_rtp_jitter_buffer_loop (GstRTPJitterBuffer * jitterbuffer)
{
GstRTPJitterBufferPrivate *priv;
gpointer elem;
GstBuffer *outbuf;
GstBuffer *outbuf = NULL;
GstFlowReturn result;
guint16 seqnum;
guint32 rtp_time;
@ -918,44 +920,24 @@ gst_rtp_jitter_buffer_loop (GstRTPJitterBuffer * jitterbuffer)
priv = jitterbuffer->priv;
async_jitter_queue_lock (priv->queue);
JBUF_LOCK_CHECK (priv, flushing);
again:
GST_DEBUG_OBJECT (jitterbuffer, "Popping item");
/* pop a buffer, we will get NULL if the queue was shut down */
elem = async_jitter_queue_pop_unlocked (priv->queue);
if (!elem)
goto no_elem;
/* special code for events */
if (G_UNLIKELY (GST_IS_EVENT (elem))) {
GstEvent *event = GST_EVENT_CAST (elem);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
GST_DEBUG_OBJECT (jitterbuffer, "Popped EOS from queue");
/* we don't expect more data now, makes upstream perform EOS actions */
priv->srcresult = GST_FLOW_UNEXPECTED;
break;
default:
GST_DEBUG_OBJECT (jitterbuffer, "Popped event %s from queue",
GST_EVENT_TYPE_NAME (event));
break;
}
async_jitter_queue_unlock (priv->queue);
/* push event */
gst_pad_push_event (priv->srcpad, event);
return;
/* wait if we are blocked or don't have a packet and eos */
while (priv->blocked || !(rtp_jitter_buffer_num_packets (priv->jbuf)
|| priv->eos)) {
JBUF_WAIT_CHECK (priv, flushing);
}
if (priv->eos)
goto do_eos;
/* we know it's a buffer now */
outbuf = GST_BUFFER_CAST (elem);
/* pop a buffer, we must have a buffer now */
outbuf = rtp_jitter_buffer_pop (priv->jbuf);
seqnum = gst_rtp_buffer_get_seq (outbuf);
GST_DEBUG_OBJECT (jitterbuffer, "Popped buffer #%d from queue %d",
gst_rtp_buffer_get_seq (outbuf),
async_jitter_queue_length_unlocked (priv->queue));
GST_DEBUG_OBJECT (jitterbuffer, "Popped buffer #%d, now %d left",
seqnum, rtp_jitter_buffer_num_packets (priv->jbuf));
/* If we don't know what the next seqnum should be (== -1) we have to wait
* because it might be possible that we are not receiving this buffer in-order,
@ -1032,11 +1014,11 @@ again:
GST_OBJECT_UNLOCK (jitterbuffer);
/* release the lock so that the other end can push stuff or unlock */
async_jitter_queue_unlock (priv->queue);
JBUF_UNLOCK (priv);
ret = gst_clock_id_wait (id, &jitter);
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* and free the entry */
gst_clock_id_unref (id);
priv->clock_id = NULL;
@ -1054,8 +1036,7 @@ again:
GST_DEBUG_OBJECT (jitterbuffer,
"Wait got unscheduled, will retry to push with new buffer");
/* reinserting popped buffer into queue */
if (!async_jitter_queue_push_sorted_unlocked (priv->queue, outbuf,
(GCompareDataFunc) compare_rtp_buffers_seq_num, NULL)) {
if (!rtp_jitter_buffer_insert (priv->jbuf, outbuf)) {
GST_DEBUG_OBJECT (jitterbuffer,
"Duplicate packet #%d detected, dropping", seqnum);
priv->num_duplicates++;
@ -1087,7 +1068,7 @@ push_buffer:
* so the other end can push stuff in the queue again. */
priv->last_popped_seqnum = seqnum;
priv->next_seqnum = (seqnum + 1) & 0xffff;
async_jitter_queue_unlock (priv->queue);
JBUF_UNLOCK (priv);
/* push buffer */
GST_DEBUG_OBJECT (jitterbuffer, "Pushing buffer %d", seqnum);
@ -1098,20 +1079,22 @@ push_buffer:
return;
/* ERRORS */
no_elem:
do_eos:
{
/* store result, we are flushing now */
GST_DEBUG_OBJECT (jitterbuffer, "Pop returned NULL, we're flushing");
priv->srcresult = GST_FLOW_WRONG_STATE;
GST_DEBUG_OBJECT (jitterbuffer, "We are EOS, pushing EOS downstream");
priv->srcresult = GST_FLOW_UNEXPECTED;
gst_pad_pause_task (priv->srcpad);
async_jitter_queue_unlock (priv->queue);
gst_pad_push_event (priv->srcpad, gst_event_new_eos ());
JBUF_UNLOCK (priv);
return;
}
flushing:
{
GST_DEBUG_OBJECT (jitterbuffer, "we are flushing");
gst_buffer_unref (outbuf);
async_jitter_queue_unlock (priv->queue);
if (outbuf)
gst_buffer_unref (outbuf);
JBUF_UNLOCK (priv);
return;
}
pause:
@ -1120,13 +1103,13 @@ pause:
GST_DEBUG_OBJECT (jitterbuffer, "pausing task, reason %s", reason);
async_jitter_queue_lock (priv->queue);
JBUF_LOCK (priv);
/* store result */
priv->srcresult = result;
/* we don't post errors or anything because upstream will do that for us
* when we pass the return value upstream. */
gst_pad_pause_task (priv->srcpad);
async_jitter_queue_unlock (priv->queue);
JBUF_UNLOCK (priv);
return;
}
}
@ -1194,11 +1177,7 @@ gst_rtp_jitter_buffer_set_property (GObject * object,
old_latency = jitterbuffer->priv->latency_ms;
jitterbuffer->priv->latency_ms = new_latency;
if (jitterbuffer->priv->clock_rate != -1) {
async_jitter_queue_set_max_queue_length (jitterbuffer->priv->queue,
gst_util_uint64_scale_int (new_latency,
jitterbuffer->priv->clock_rate, 1000));
}
/* post message if latency changed, this will infor the parent pipeline
* that a latency reconfiguration is possible. */
if (new_latency != old_latency) {

132
gst/rtpmanager/gstrtpsession.c
View file

@ -202,6 +202,13 @@ enum
{
SIGNAL_REQUEST_PT_MAP,
SIGNAL_CLEAR_PT_MAP,
SIGNAL_ON_NEW_SSRC,
SIGNAL_ON_SSRC_COLLISION,
SIGNAL_ON_SSRC_VALIDATED,
SIGNAL_ON_BYE_SSRC,
SIGNAL_ON_BYE_TIMEOUT,
SIGNAL_ON_TIMEOUT,
LAST_SIGNAL
};
@ -266,6 +273,48 @@ static void gst_rtp_session_clear_pt_map (GstRTPSession * rtpsession);
static guint gst_rtp_session_signals[LAST_SIGNAL] = { 0 };
static void
on_new_ssrc (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_NEW_SSRC], 0,
src->ssrc);
}
static void
on_ssrc_collision (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_SSRC_COLLISION], 0,
src->ssrc);
}
static void
on_ssrc_validated (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_SSRC_VALIDATED], 0,
src->ssrc);
}
static void
on_bye_ssrc (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_BYE_SSRC], 0,
src->ssrc);
}
static void
on_bye_timeout (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_BYE_TIMEOUT], 0,
src->ssrc);
}
static void
on_timeout (RTPSession * session, RTPSource * src, GstRTPSession * sess)
{
g_signal_emit (sess, gst_rtp_session_signals[SIGNAL_ON_TIMEOUT], 0,
src->ssrc);
}
GST_BOILERPLATE (GstRTPSession, gst_rtp_session, GstElement, GST_TYPE_ELEMENT);
static void
@ -332,6 +381,76 @@ gst_rtp_session_class_init (GstRTPSessionClass * klass)
G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRTPSessionClass, clear_pt_map),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
/**
* GstRTPSession::on-new-ssrc:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify of a new SSRC that entered @session.
*/
gst_rtp_session_signals[SIGNAL_ON_NEW_SSRC] =
g_signal_new ("on-new-ssrc", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass, on_new_ssrc),
NULL, NULL, g_cclosure_marshal_VOID__UINT, G_TYPE_NONE, 1, G_TYPE_UINT);
/**
* GstRTPSession::on-ssrc_collision:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify when we have an SSRC collision
*/
gst_rtp_session_signals[SIGNAL_ON_SSRC_COLLISION] =
g_signal_new ("on-ssrc-collision", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass,
on_ssrc_collision), NULL, NULL, g_cclosure_marshal_VOID__UINT,
G_TYPE_NONE, 1, G_TYPE_UINT);
/**
* GstRTPSession::on-ssrc_validated:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify of a new SSRC that became validated.
*/
gst_rtp_session_signals[SIGNAL_ON_SSRC_VALIDATED] =
g_signal_new ("on-ssrc-validated", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass,
on_ssrc_validated), NULL, NULL, g_cclosure_marshal_VOID__UINT,
G_TYPE_NONE, 1, G_TYPE_UINT);
/**
* GstRTPSession::on-bye-ssrc:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify of an SSRC that became inactive because of a BYE packet.
*/
gst_rtp_session_signals[SIGNAL_ON_BYE_SSRC] =
g_signal_new ("on-bye-ssrc", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass, on_bye_ssrc),
NULL, NULL, g_cclosure_marshal_VOID__UINT, G_TYPE_NONE, 1, G_TYPE_UINT);
/**
* GstRTPSession::on-bye-timeout:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify of an SSRC that has timed out because of BYE
*/
gst_rtp_session_signals[SIGNAL_ON_BYE_TIMEOUT] =
g_signal_new ("on-bye-timeout", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass, on_bye_timeout),
NULL, NULL, g_cclosure_marshal_VOID__UINT, G_TYPE_NONE, 1, G_TYPE_UINT);
/**
* GstRTPSession::on-timeout:
* @sess: the object which received the signal
* @ssrc: the SSRC
*
* Notify of an SSRC that has timed out
*/
gst_rtp_session_signals[SIGNAL_ON_TIMEOUT] =
g_signal_new ("on-timeout", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRTPSessionClass, on_timeout),
NULL, NULL, g_cclosure_marshal_VOID__UINT, G_TYPE_NONE, 1, G_TYPE_UINT);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_rtp_session_change_state);
gstelement_class->request_new_pad =
@ -353,6 +472,19 @@ gst_rtp_session_init (GstRTPSession * rtpsession, GstRTPSessionClass * klass)
rtpsession->priv->session = rtp_session_new ();
/* configure callbacks */
rtp_session_set_callbacks (rtpsession->priv->session, &callbacks, rtpsession);
/* configure signals */
g_signal_connect (rtpsession->priv->session, "on-new-ssrc",
(GCallback) on_new_ssrc, rtpsession);
g_signal_connect (rtpsession->priv->session, "on-ssrc-collision",
(GCallback) on_ssrc_collision, rtpsession);
g_signal_connect (rtpsession->priv->session, "on-ssrc-validated",
(GCallback) on_ssrc_validated, rtpsession);
g_signal_connect (rtpsession->priv->session, "on-bye-ssrc",
(GCallback) on_bye_ssrc, rtpsession);
g_signal_connect (rtpsession->priv->session, "on-bye-timeout",
(GCallback) on_bye_timeout, rtpsession);
g_signal_connect (rtpsession->priv->session, "on-timeout",
(GCallback) on_timeout, rtpsession);
}
static void

8
gst/rtpmanager/gstrtpsession.h
View file

@ -59,8 +59,14 @@ struct _GstRTPSessionClass {
/* signals */
GstCaps* (*request_pt_map) (GstRTPSession *sess, guint pt);
void (*clear_pt_map) (GstRTPSession *sess);
void (*on_new_ssrc) (GstRTPSession *sess, guint32 ssrc);
void (*on_ssrc_collision) (GstRTPSession *sess, guint32 ssrc);
void (*on_ssrc_validated) (GstRTPSession *sess, guint32 ssrc);
void (*on_bye_ssrc) (GstRTPSession *sess, guint32 ssrc);
void (*on_bye_timeout) (GstRTPSession *sess, guint32 ssrc);
void (*on_timeout) (GstRTPSession *sess, guint32 ssrc);
};
GType gst_rtp_session_get_type (void);

237
gst/rtpmanager/rtpjitterbuffer.c Normal file
View file

@ -0,0 +1,237 @@
/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <gst/rtp/gstrtcpbuffer.h>
#include "rtpjitterbuffer.h"
GST_DEBUG_CATEGORY_STATIC (rtp_jitter_buffer_debug);
#define GST_CAT_DEFAULT rtp_jitter_buffer_debug
/* signals and args */
enum
{
LAST_SIGNAL
};
enum
{
PROP_0
};
/* GObject vmethods */
static void rtp_jitter_buffer_finalize (GObject * object);
/* static guint rtp_jitter_buffer_signals[LAST_SIGNAL] = { 0 }; */
G_DEFINE_TYPE (RTPJitterBuffer, rtp_jitter_buffer, G_TYPE_OBJECT);
static void
rtp_jitter_buffer_class_init (RTPJitterBufferClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gobject_class->finalize = rtp_jitter_buffer_finalize;
GST_DEBUG_CATEGORY_INIT (rtp_jitter_buffer_debug, "rtpjitterbuffer", 0,
"RTP Jitter Buffer");
}
static void
rtp_jitter_buffer_init (RTPJitterBuffer * jbuf)
{
jbuf->packets = g_queue_new ();
}
static void
rtp_jitter_buffer_finalize (GObject * object)
{
RTPJitterBuffer *jbuf;
jbuf = RTP_JITTER_BUFFER_CAST (object);
rtp_jitter_buffer_flush (jbuf);
g_queue_free (jbuf->packets);
G_OBJECT_CLASS (rtp_jitter_buffer_parent_class)->finalize (object);
}
/**
* rtp_jitter_buffer_new:
*
* Create an #RTPJitterBuffer.
*
* Returns: a new #RTPJitterBuffer. Use g_object_unref() after usage.
*/
RTPJitterBuffer *
rtp_jitter_buffer_new (void)
{
RTPJitterBuffer *jbuf;
jbuf = g_object_new (RTP_TYPE_JITTER_BUFFER, NULL);
return jbuf;
}
static gint
compare_seqnum (GstBuffer * a, GstBuffer * b, RTPJitterBuffer * jbuf)
{
guint16 seq1, seq2;
seq1 = gst_rtp_buffer_get_seq (a);
seq2 = gst_rtp_buffer_get_seq (b);
/* check if diff more than half of the 16bit range */
if (abs (seq2 - seq1) > (1 << 15)) {
/* one of a/b has wrapped */
return seq1 - seq2;
} else {
return seq2 - seq1;
}
}
/**
* rtp_jitter_buffer_insert:
* @jbuf: an #RTPJitterBuffer
* @buf: a buffer
*
* Inserts @buf into the packet queue of @jbuf. The sequence number of the
* packet will be used to sort the packets. This function takes ownerhip of
* @buf when the function returns %TRUE.
*
* Returns: %FALSE if a packet with the same number already existed.
*/
gboolean
rtp_jitter_buffer_insert (RTPJitterBuffer * jbuf, GstBuffer * buf)
{
GList *list;
gint func_ret = 1;
g_return_val_if_fail (jbuf != NULL, FALSE);
g_return_val_if_fail (buf != NULL, FALSE);
/* loop the list to skip strictly smaller seqnum buffers */
list = jbuf->packets->head;
while (list
&& (func_ret =
compare_seqnum (GST_BUFFER_CAST (list->data), buf, jbuf)) < 0)
list = list->next;
/* we hit a packet with the same seqnum, return FALSE to notify a duplicate */
if (func_ret == 0)
return FALSE;
if (list)
g_queue_insert_before (jbuf->packets, list, buf);
else
g_queue_push_tail (jbuf->packets, buf);
return TRUE;
}
/**
* rtp_jitter_buffer_pop:
* @jbuf: an #RTPJitterBuffer
*
* Pops the oldest buffer from the packet queue of @jbuf.
*
* Returns: a #GstBuffer or %NULL when there was no packet in the queue.
*/
GstBuffer *
rtp_jitter_buffer_pop (RTPJitterBuffer * jbuf)
{
GstBuffer *buf;
g_return_val_if_fail (jbuf != NULL, FALSE);
buf = g_queue_pop_tail (jbuf->packets);
return buf;
}
/**
* rtp_jitter_buffer_flush:
* @jbuf: an #RTPJitterBuffer
*
* Flush all packets from the jitterbuffer.
*/
void
rtp_jitter_buffer_flush (RTPJitterBuffer * jbuf)
{
GstBuffer *buffer;
g_return_if_fail (jbuf != NULL);
while ((buffer = g_queue_pop_head (jbuf->packets)))
gst_buffer_unref (buffer);
}
/**
* rtp_jitter_buffer_num_packets:
* @jbuf: an #RTPJitterBuffer
*
* Get the number of packets currently in "jbuf.
*
* Returns: The number of packets in @jbuf.
*/
guint
rtp_jitter_buffer_num_packets (RTPJitterBuffer * jbuf)
{
g_return_val_if_fail (jbuf != NULL, 0);
return jbuf->packets->length;
}
/**
* rtp_jitter_buffer_get_ts_diff:
* @jbuf: an #RTPJitterBuffer
*
* Get the difference between the timestamps of first and last packet in the
* jitterbuffer.
*
* Returns: The difference expressed in the timestamp units of the packets.
*/
guint32
rtp_jitter_buffer_get_ts_diff (RTPJitterBuffer * jbuf)
{
guint32 high_ts, low_ts;
GstBuffer *high_buf, *low_buf;
g_return_val_if_fail (jbuf != NULL, 0);
high_buf = g_queue_peek_head (jbuf->packets);
low_buf = g_queue_peek_tail (jbuf->packets);
if (!high_buf || !low_buf || high_buf == low_buf)
return 0;
high_ts = gst_rtp_buffer_get_timestamp (high_buf);
low_ts = gst_rtp_buffer_get_timestamp (low_buf);
/* it needs to work if ts wraps */
if (high_ts >= low_ts) {
return high_ts - low_ts;
} else {
return high_ts + G_MAXUINT32 + 1 - low_ts;
}
}

67
gst/rtpmanager/rtpjitterbuffer.h Normal file
View file

@ -0,0 +1,67 @@
/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __RTP_JITTER_BUFFER_H__
#define __RTP_JITTER_BUFFER_H__
#include <gst/gst.h>
#include <gst/rtp/gstrtcpbuffer.h>
#include <gst/netbuffer/gstnetbuffer.h>
typedef struct _RTPJitterBuffer RTPJitterBuffer;
typedef struct _RTPJitterBufferClass RTPJitterBufferClass;
#define RTP_TYPE_JITTER_BUFFER (rtp_jitter_buffer_get_type())
#define RTP_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_JITTER_BUFFER,RTPJitterBuffer))
#define RTP_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_JITTER_BUFFER,RTPJitterBufferClass))
#define RTP_IS_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_JITTER_BUFFER))
#define RTP_IS_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_JITTER_BUFFER))
#define RTP_JITTER_BUFFER_CAST(src) ((RTPJitterBuffer *)(src))
/**
* RTPJitterBuffer:
*
* A JitterBuffer in the #RTPSession
*/
struct _RTPJitterBuffer {
GObject object;
GQueue *packets;
};
struct _RTPJitterBufferClass {
GObjectClass parent_class;
};
GType rtp_jitter_buffer_get_type (void);
/* managing lifetime */
RTPJitterBuffer* rtp_jitter_buffer_new (void);
gboolean rtp_jitter_buffer_insert (RTPJitterBuffer *jbuf, GstBuffer *buf);
GstBuffer * rtp_jitter_buffer_pop (RTPJitterBuffer *jbuf);
void rtp_jitter_buffer_flush (RTPJitterBuffer *jbuf);
guint rtp_jitter_buffer_num_packets (RTPJitterBuffer *jbuf);
guint32 rtp_jitter_buffer_get_ts_diff (RTPJitterBuffer *jbuf);
#endif /* __RTP_JITTER_BUFFER_H__ */

2
gst/rtpmanager/rtpsession.c
View file

@ -271,7 +271,6 @@ on_ssrc_validated (RTPSession * sess, RTPSource * source)
static void
on_bye_ssrc (RTPSession * sess, RTPSource * source)
{
/* notify app that reconsideration should be performed */
g_signal_emit (sess, rtp_session_signals[SIGNAL_ON_BYE_SSRC], 0, source);
}
@ -1724,7 +1723,6 @@ session_cleanup (const gchar * key, RTPSource * source, ReportData * data)
on_bye_timeout (sess, source);
else
on_timeout (sess, source);
}
return remove;
}