mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-06-26 18:00:49 +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 committed by Tim-Philipp Müller
parent 366a756552
commit cdd82f2a95
12 changed files with 710 additions and 965 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

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;
}