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gstreamer/gst/rtsp-server/rtsp-stream.c
Matthew Waters b38eb8e99e stream: block the output of rtpbin instead of the source pipeline 
85c52e194b introduced a more correct
detection of the srtp rollover counter to add to the SDP.

Unfortunately, it was incomplete for live pipelines where the logic
blocks the source bin before creating the SDP and thus would never have
the necessary informaiton to create a correct SDP with srtp encryption.

Move the pad blocks to rtpbin's output pads instead so that the
necessary information can be created before we need the information for
the SDP.

https://bugzilla.gnome.org/show_bug.cgi?id=770239
2016-11-23 23:08:16 +11:00

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/* GStreamer
* Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
* Copyright (C) 2015 Centricular Ltd
* Author: Sebastian Dröge <sebastian@centricular.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:rtsp-stream
* @short_description: A media stream
* @see_also: #GstRTSPMedia
*
* The #GstRTSPStream object manages the data transport for one stream. It
* is created from a payloader element and a source pad that produce the RTP
* packets for the stream.
*
* With gst_rtsp_stream_join_bin() the streaming elements are added to the bin
* and rtpbin. gst_rtsp_stream_leave_bin() removes the elements again.
*
* The #GstRTSPStream will use the configured addresspool, as set with
* gst_rtsp_stream_set_address_pool(), to allocate multicast addresses for the
* stream. With gst_rtsp_stream_get_multicast_address() you can get the
* configured address.
*
* With gst_rtsp_stream_get_server_port () you can get the port that the server
* will use to receive RTCP. This is the part that the clients will use to send
* RTCP to.
*
* With gst_rtsp_stream_add_transport() destinations can be added where the
* stream should be sent to. Use gst_rtsp_stream_remove_transport() to remove
* the destination again.
*
* Last reviewed on 2013-07-16 (1.0.0)
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gio/gio.h>
#include <gst/app/gstappsrc.h>
#include <gst/app/gstappsink.h>
#include <gst/rtp/gstrtpbuffer.h>
#include "rtsp-stream.h"
#define GST_RTSP_STREAM_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_RTSP_STREAM, GstRTSPStreamPrivate))
struct _GstRTSPStreamPrivate
{
GMutex lock;
guint idx;
/* Only one pad is ever set */
GstPad *srcpad, *sinkpad;
GstElement *payloader;
guint buffer_size;
GstBin *joined_bin;
/* TRUE if this stream is running on
* the client side of an RTSP link (for RECORD) */
gboolean client_side;
gchar *control;
GstRTSPProfile profiles;
GstRTSPLowerTrans protocols;
/* pads on the rtpbin */
GstPad *send_rtp_sink;
GstPad *recv_rtp_src;
GstPad *recv_sink[2];
GstPad *send_src[2];
/* the RTPSession object */
GObject *session;
/* SRTP encoder/decoder */
GstElement *srtpenc;
GstElement *srtpdec;
GHashTable *keys;
/* for UDP unicast */
GstElement *udpsrc_v4[2];
GstElement *udpsrc_v6[2];
GstElement *udpqueue[2];
GstElement *udpsink[2];
/* for UDP multicast */
GstElement *mcast_udpsrc_v4[2];
GstElement *mcast_udpsrc_v6[2];
GstElement *mcast_udpqueue[2];
GstElement *mcast_udpsink[2];
/* for TCP transport */
GstElement *appsrc[2];
GstClockTime appsrc_base_time[2];
GstElement *appqueue[2];
GstElement *appsink[2];
GstElement *tee[2];
GstElement *funnel[2];
/* retransmission */
GstElement *rtxsend;
guint rtx_pt;
GstClockTime rtx_time;
/* pool used to manage unicast and multicast addresses */
GstRTSPAddressPool *pool;
/* unicast server addr/port */
GstRTSPAddress *server_addr_v4;
GstRTSPAddress *server_addr_v6;
/* multicast addresses */
GstRTSPAddress *mcast_addr_v4;
GstRTSPAddress *mcast_addr_v6;
gchar *multicast_iface;
/* the caps of the stream */
gulong caps_sig;
GstCaps *caps;
/* transports we stream to */
guint n_active;
GList *transports;
guint transports_cookie;
GList *tr_cache_rtp;
GList *tr_cache_rtcp;
guint tr_cache_cookie_rtp;
guint tr_cache_cookie_rtcp;
gint dscp_qos;
/* stream blocking */
gulong blocked_id[2];
gboolean blocking;
/* pt->caps map for RECORD streams */
GHashTable *ptmap;
GstRTSPPublishClockMode publish_clock_mode;
};
#define DEFAULT_CONTROL NULL
#define DEFAULT_PROFILES GST_RTSP_PROFILE_AVP
#define DEFAULT_PROTOCOLS GST_RTSP_LOWER_TRANS_UDP | GST_RTSP_LOWER_TRANS_UDP_MCAST | \
GST_RTSP_LOWER_TRANS_TCP
enum
{
PROP_0,
PROP_CONTROL,
PROP_PROFILES,
PROP_PROTOCOLS,
PROP_LAST
};
enum
{
SIGNAL_NEW_RTP_ENCODER,
SIGNAL_NEW_RTCP_ENCODER,
SIGNAL_LAST
};
GST_DEBUG_CATEGORY_STATIC (rtsp_stream_debug);
#define GST_CAT_DEFAULT rtsp_stream_debug
static GQuark ssrc_stream_map_key;
static void gst_rtsp_stream_get_property (GObject * object, guint propid,
GValue * value, GParamSpec * pspec);
static void gst_rtsp_stream_set_property (GObject * object, guint propid,
const GValue * value, GParamSpec * pspec);
static void gst_rtsp_stream_finalize (GObject * obj);
static guint gst_rtsp_stream_signals[SIGNAL_LAST] = { 0 };
G_DEFINE_TYPE (GstRTSPStream, gst_rtsp_stream, G_TYPE_OBJECT);
static void
gst_rtsp_stream_class_init (GstRTSPStreamClass * klass)
{
GObjectClass *gobject_class;
g_type_class_add_private (klass, sizeof (GstRTSPStreamPrivate));
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gst_rtsp_stream_get_property;
gobject_class->set_property = gst_rtsp_stream_set_property;
gobject_class->finalize = gst_rtsp_stream_finalize;
g_object_class_install_property (gobject_class, PROP_CONTROL,
g_param_spec_string ("control", "Control",
"The control string for this stream", DEFAULT_CONTROL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROFILES,
g_param_spec_flags ("profiles", "Profiles",
"Allowed transfer profiles", GST_TYPE_RTSP_PROFILE,
DEFAULT_PROFILES, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROTOCOLS,
g_param_spec_flags ("protocols", "Protocols",
"Allowed lower transport protocols", GST_TYPE_RTSP_LOWER_TRANS,
DEFAULT_PROTOCOLS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_rtsp_stream_signals[SIGNAL_NEW_RTP_ENCODER] =
g_signal_new ("new-rtp-encoder", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
gst_rtsp_stream_signals[SIGNAL_NEW_RTCP_ENCODER] =
g_signal_new ("new-rtcp-encoder", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
GST_DEBUG_CATEGORY_INIT (rtsp_stream_debug, "rtspstream", 0, "GstRTSPStream");
ssrc_stream_map_key = g_quark_from_static_string ("GstRTSPServer.stream");
}
static void
gst_rtsp_stream_init (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = GST_RTSP_STREAM_GET_PRIVATE (stream);
GST_DEBUG ("new stream %p", stream);
stream->priv = priv;
priv->dscp_qos = -1;
priv->control = g_strdup (DEFAULT_CONTROL);
priv->profiles = DEFAULT_PROFILES;
priv->protocols = DEFAULT_PROTOCOLS;
priv->publish_clock_mode = GST_RTSP_PUBLISH_CLOCK_MODE_CLOCK;
g_mutex_init (&priv->lock);
priv->keys = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) gst_caps_unref);
priv->ptmap = g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) gst_caps_unref);
}
static void
gst_rtsp_stream_finalize (GObject * obj)
{
GstRTSPStream *stream;
GstRTSPStreamPrivate *priv;
stream = GST_RTSP_STREAM (obj);
priv = stream->priv;
GST_DEBUG ("finalize stream %p", stream);
/* we really need to be unjoined now */
g_return_if_fail (priv->joined_bin == NULL);
if (priv->mcast_addr_v4)
gst_rtsp_address_free (priv->mcast_addr_v4);
if (priv->mcast_addr_v6)
gst_rtsp_address_free (priv->mcast_addr_v6);
if (priv->server_addr_v4)
gst_rtsp_address_free (priv->server_addr_v4);
if (priv->server_addr_v6)
gst_rtsp_address_free (priv->server_addr_v6);
if (priv->pool)
g_object_unref (priv->pool);
if (priv->rtxsend)
g_object_unref (priv->rtxsend);
g_free (priv->multicast_iface);
gst_object_unref (priv->payloader);
if (priv->srcpad)
gst_object_unref (priv->srcpad);
if (priv->sinkpad)
gst_object_unref (priv->sinkpad);
g_free (priv->control);
g_mutex_clear (&priv->lock);
g_hash_table_unref (priv->keys);
g_hash_table_destroy (priv->ptmap);
G_OBJECT_CLASS (gst_rtsp_stream_parent_class)->finalize (obj);
}
static void
gst_rtsp_stream_get_property (GObject * object, guint propid,
GValue * value, GParamSpec * pspec)
{
GstRTSPStream *stream = GST_RTSP_STREAM (object);
switch (propid) {
case PROP_CONTROL:
g_value_take_string (value, gst_rtsp_stream_get_control (stream));
break;
case PROP_PROFILES:
g_value_set_flags (value, gst_rtsp_stream_get_profiles (stream));
break;
case PROP_PROTOCOLS:
g_value_set_flags (value, gst_rtsp_stream_get_protocols (stream));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
}
}
static void
gst_rtsp_stream_set_property (GObject * object, guint propid,
const GValue * value, GParamSpec * pspec)
{
GstRTSPStream *stream = GST_RTSP_STREAM (object);
switch (propid) {
case PROP_CONTROL:
gst_rtsp_stream_set_control (stream, g_value_get_string (value));
break;
case PROP_PROFILES:
gst_rtsp_stream_set_profiles (stream, g_value_get_flags (value));
break;
case PROP_PROTOCOLS:
gst_rtsp_stream_set_protocols (stream, g_value_get_flags (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
}
}
/**
* gst_rtsp_stream_new:
* @idx: an index
* @pad: a #GstPad
* @payloader: a #GstElement
*
* Create a new media stream with index @idx that handles RTP data on
* @pad and has a payloader element @payloader if @pad is a source pad
* or a depayloader element @payloader if @pad is a sink pad.
*
* Returns: (transfer full): a new #GstRTSPStream
*/
GstRTSPStream *
gst_rtsp_stream_new (guint idx, GstElement * payloader, GstPad * pad)
{
GstRTSPStreamPrivate *priv;
GstRTSPStream *stream;
g_return_val_if_fail (GST_IS_ELEMENT (payloader), NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
stream = g_object_new (GST_TYPE_RTSP_STREAM, NULL);
priv = stream->priv;
priv->idx = idx;
priv->payloader = gst_object_ref (payloader);
if (GST_PAD_IS_SRC (pad))
priv->srcpad = gst_object_ref (pad);
else
priv->sinkpad = gst_object_ref (pad);
return stream;
}
/**
* gst_rtsp_stream_get_index:
* @stream: a #GstRTSPStream
*
* Get the stream index.
*
* Return: the stream index.
*/
guint
gst_rtsp_stream_get_index (GstRTSPStream * stream)
{
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), -1);
return stream->priv->idx;
}
/**
* gst_rtsp_stream_get_pt:
* @stream: a #GstRTSPStream
*
* Get the stream payload type.
*
* Return: the stream payload type.
*/
guint
gst_rtsp_stream_get_pt (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
guint pt;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), -1);
priv = stream->priv;
g_object_get (G_OBJECT (priv->payloader), "pt", &pt, NULL);
return pt;
}
/**
* gst_rtsp_stream_get_srcpad:
* @stream: a #GstRTSPStream
*
* Get the srcpad associated with @stream.
*
* Returns: (transfer full): the srcpad. Unref after usage.
*/
GstPad *
gst_rtsp_stream_get_srcpad (GstRTSPStream * stream)
{
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
if (!stream->priv->srcpad)
return NULL;
return gst_object_ref (stream->priv->srcpad);
}
/**
* gst_rtsp_stream_get_sinkpad:
* @stream: a #GstRTSPStream
*
* Get the sinkpad associated with @stream.
*
* Returns: (transfer full): the sinkpad. Unref after usage.
*/
GstPad *
gst_rtsp_stream_get_sinkpad (GstRTSPStream * stream)
{
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
if (!stream->priv->sinkpad)
return NULL;
return gst_object_ref (stream->priv->sinkpad);
}
/**
* gst_rtsp_stream_get_control:
* @stream: a #GstRTSPStream
*
* Get the control string to identify this stream.
*
* Returns: (transfer full): the control string. g_free() after usage.
*/
gchar *
gst_rtsp_stream_get_control (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
gchar *result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((result = g_strdup (priv->control)) == NULL)
result = g_strdup_printf ("stream=%u", priv->idx);
g_mutex_unlock (&priv->lock);
return result;
}
/**
* gst_rtsp_stream_set_control:
* @stream: a #GstRTSPStream
* @control: a control string
*
* Set the control string in @stream.
*/
void
gst_rtsp_stream_set_control (GstRTSPStream * stream, const gchar * control)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_mutex_lock (&priv->lock);
g_free (priv->control);
priv->control = g_strdup (control);
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_has_control:
* @stream: a #GstRTSPStream
* @control: a control string
*
* Check if @stream has the control string @control.
*
* Returns: %TRUE is @stream has @control as the control string
*/
gboolean
gst_rtsp_stream_has_control (GstRTSPStream * stream, const gchar * control)
{
GstRTSPStreamPrivate *priv;
gboolean res;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (priv->control)
res = (g_strcmp0 (priv->control, control) == 0);
else {
guint streamid;
if (sscanf (control, "stream=%u", &streamid) > 0)
res = (streamid == priv->idx);
else
res = FALSE;
}
g_mutex_unlock (&priv->lock);
return res;
}
/**
* gst_rtsp_stream_set_mtu:
* @stream: a #GstRTSPStream
* @mtu: a new MTU
*
* Configure the mtu in the payloader of @stream to @mtu.
*/
void
gst_rtsp_stream_set_mtu (GstRTSPStream * stream, guint mtu)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
GST_LOG_OBJECT (stream, "set MTU %u", mtu);
g_object_set (G_OBJECT (priv->payloader), "mtu", mtu, NULL);
}
/**
* gst_rtsp_stream_get_mtu:
* @stream: a #GstRTSPStream
*
* Get the configured MTU in the payloader of @stream.
*
* Returns: the MTU of the payloader.
*/
guint
gst_rtsp_stream_get_mtu (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
guint mtu;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), 0);
priv = stream->priv;
g_object_get (G_OBJECT (priv->payloader), "mtu", &mtu, NULL);
return mtu;
}
/* Update the dscp qos property on the udp sinks */
static void
update_dscp_qos (GstRTSPStream * stream, GstElement * udpsink[2])
{
GstRTSPStreamPrivate *priv;
priv = stream->priv;
if (udpsink[0]) {
g_object_set (G_OBJECT (udpsink[0]), "qos-dscp", priv->dscp_qos, NULL);
}
if (udpsink[1]) {
g_object_set (G_OBJECT (udpsink[1]), "qos-dscp", priv->dscp_qos, NULL);
}
}
/**
* gst_rtsp_stream_set_dscp_qos:
* @stream: a #GstRTSPStream
* @dscp_qos: a new dscp qos value (0-63, or -1 to disable)
*
* Configure the dscp qos of the outgoing sockets to @dscp_qos.
*/
void
gst_rtsp_stream_set_dscp_qos (GstRTSPStream * stream, gint dscp_qos)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
GST_LOG_OBJECT (stream, "set DSCP QoS %d", dscp_qos);
if (dscp_qos < -1 || dscp_qos > 63) {
GST_WARNING_OBJECT (stream, "trying to set illegal dscp qos %d", dscp_qos);
return;
}
priv->dscp_qos = dscp_qos;
update_dscp_qos (stream, priv->udpsink);
}
/**
* gst_rtsp_stream_get_dscp_qos:
* @stream: a #GstRTSPStream
*
* Get the configured DSCP QoS in of the outgoing sockets.
*
* Returns: the DSCP QoS value of the outgoing sockets, or -1 if disbled.
*/
gint
gst_rtsp_stream_get_dscp_qos (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), -1);
priv = stream->priv;
return priv->dscp_qos;
}
/**
* gst_rtsp_stream_is_transport_supported:
* @stream: a #GstRTSPStream
* @transport: (transfer none): a #GstRTSPTransport
*
* Check if @transport can be handled by stream
*
* Returns: %TRUE if @transport can be handled by @stream.
*/
gboolean
gst_rtsp_stream_is_transport_supported (GstRTSPStream * stream,
GstRTSPTransport * transport)
{
GstRTSPStreamPrivate *priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (transport->trans != GST_RTSP_TRANS_RTP)
goto unsupported_transmode;
if (!(transport->profile & priv->profiles))
goto unsupported_profile;
if (!(transport->lower_transport & priv->protocols))
goto unsupported_ltrans;
g_mutex_unlock (&priv->lock);
return TRUE;
/* ERRORS */
unsupported_transmode:
{
GST_DEBUG ("unsupported transport mode %d", transport->trans);
g_mutex_unlock (&priv->lock);
return FALSE;
}
unsupported_profile:
{
GST_DEBUG ("unsupported profile %d", transport->profile);
g_mutex_unlock (&priv->lock);
return FALSE;
}
unsupported_ltrans:
{
GST_DEBUG ("unsupported lower transport %d", transport->lower_transport);
g_mutex_unlock (&priv->lock);
return FALSE;
}
}
/**
* gst_rtsp_stream_set_profiles:
* @stream: a #GstRTSPStream
* @profiles: the new profiles
*
* Configure the allowed profiles for @stream.
*/
void
gst_rtsp_stream_set_profiles (GstRTSPStream * stream, GstRTSPProfile profiles)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_mutex_lock (&priv->lock);
priv->profiles = profiles;
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_get_profiles:
* @stream: a #GstRTSPStream
*
* Get the allowed profiles of @stream.
*
* Returns: a #GstRTSPProfile
*/
GstRTSPProfile
gst_rtsp_stream_get_profiles (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstRTSPProfile res;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), GST_RTSP_PROFILE_UNKNOWN);
priv = stream->priv;
g_mutex_lock (&priv->lock);
res = priv->profiles;
g_mutex_unlock (&priv->lock);
return res;
}
/**
* gst_rtsp_stream_set_protocols:
* @stream: a #GstRTSPStream
* @protocols: the new flags
*
* Configure the allowed lower transport for @stream.
*/
void
gst_rtsp_stream_set_protocols (GstRTSPStream * stream,
GstRTSPLowerTrans protocols)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_mutex_lock (&priv->lock);
priv->protocols = protocols;
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_get_protocols:
* @stream: a #GstRTSPStream
*
* Get the allowed protocols of @stream.
*
* Returns: a #GstRTSPLowerTrans
*/
GstRTSPLowerTrans
gst_rtsp_stream_get_protocols (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstRTSPLowerTrans res;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream),
GST_RTSP_LOWER_TRANS_UNKNOWN);
priv = stream->priv;
g_mutex_lock (&priv->lock);
res = priv->protocols;
g_mutex_unlock (&priv->lock);
return res;
}
/**
* gst_rtsp_stream_set_address_pool:
* @stream: a #GstRTSPStream
* @pool: (transfer none): a #GstRTSPAddressPool
*
* configure @pool to be used as the address pool of @stream.
*/
void
gst_rtsp_stream_set_address_pool (GstRTSPStream * stream,
GstRTSPAddressPool * pool)
{
GstRTSPStreamPrivate *priv;
GstRTSPAddressPool *old;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
GST_LOG_OBJECT (stream, "set address pool %p", pool);
g_mutex_lock (&priv->lock);
if ((old = priv->pool) != pool)
priv->pool = pool ? g_object_ref (pool) : NULL;
else
old = NULL;
g_mutex_unlock (&priv->lock);
if (old)
g_object_unref (old);
}
/**
* gst_rtsp_stream_get_address_pool:
* @stream: a #GstRTSPStream
*
* Get the #GstRTSPAddressPool used as the address pool of @stream.
*
* Returns: (transfer full): the #GstRTSPAddressPool of @stream. g_object_unref() after
* usage.
*/
GstRTSPAddressPool *
gst_rtsp_stream_get_address_pool (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstRTSPAddressPool *result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((result = priv->pool))
g_object_ref (result);
g_mutex_unlock (&priv->lock);
return result;
}
/**
* gst_rtsp_stream_set_multicast_iface:
* @stream: a #GstRTSPStream
* @multicast_iface: (transfer none): a multicast interface name
*
* configure @multicast_iface to be used for @stream.
*/
void
gst_rtsp_stream_set_multicast_iface (GstRTSPStream * stream,
const gchar * multicast_iface)
{
GstRTSPStreamPrivate *priv;
gchar *old;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
GST_LOG_OBJECT (stream, "set multicast iface %s",
GST_STR_NULL (multicast_iface));
g_mutex_lock (&priv->lock);
if ((old = priv->multicast_iface) != multicast_iface)
priv->multicast_iface = multicast_iface ? g_strdup (multicast_iface) : NULL;
else
old = NULL;
g_mutex_unlock (&priv->lock);
if (old)
g_free (old);
}
/**
* gst_rtsp_stream_get_multicast_iface:
* @stream: a #GstRTSPStream
*
* Get the multicast interface used for @stream.
*
* Returns: (transfer full): the multicast interface for @stream. g_free() after
* usage.
*/
gchar *
gst_rtsp_stream_get_multicast_iface (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
gchar *result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((result = priv->multicast_iface))
result = g_strdup (result);
g_mutex_unlock (&priv->lock);
return result;
}
/**
* gst_rtsp_stream_get_multicast_address:
* @stream: a #GstRTSPStream
* @family: the #GSocketFamily
*
* Get the multicast address of @stream for @family. The original
* #GstRTSPAddress is cached and copy is returned, so freeing the return value
* won't release the address from the pool.
*
* Returns: (transfer full) (nullable): the #GstRTSPAddress of @stream
* or %NULL when no address could be allocated. gst_rtsp_address_free()
* after usage.
*/
GstRTSPAddress *
gst_rtsp_stream_get_multicast_address (GstRTSPStream * stream,
GSocketFamily family)
{
GstRTSPStreamPrivate *priv;
GstRTSPAddress *result;
GstRTSPAddress **addrp;
GstRTSPAddressFlags flags;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&stream->priv->lock);
if (family == G_SOCKET_FAMILY_IPV6) {
flags = GST_RTSP_ADDRESS_FLAG_IPV6;
addrp = &priv->mcast_addr_v6;
} else {
flags = GST_RTSP_ADDRESS_FLAG_IPV4;
addrp = &priv->mcast_addr_v4;
}
if (*addrp == NULL) {
if (priv->pool == NULL)
goto no_pool;
flags |= GST_RTSP_ADDRESS_FLAG_EVEN_PORT | GST_RTSP_ADDRESS_FLAG_MULTICAST;
*addrp = gst_rtsp_address_pool_acquire_address (priv->pool, flags, 2);
if (*addrp == NULL)
goto no_address;
/* FIXME: Also reserve the same port with unicast ANY address, since that's
* where we are going to bind our socket. Probably loop until we find a port
* available in both mcast and unicast pools. Maybe GstRTSPAddressPool
* should do it for us when both GST_RTSP_ADDRESS_FLAG_MULTICAST and
* GST_RTSP_ADDRESS_FLAG_UNICAST are givent. */
}
result = gst_rtsp_address_copy (*addrp);
g_mutex_unlock (&stream->priv->lock);
return result;
/* ERRORS */
no_pool:
{
GST_ERROR_OBJECT (stream, "no address pool specified");
g_mutex_unlock (&stream->priv->lock);
return NULL;
}
no_address:
{
GST_ERROR_OBJECT (stream, "failed to acquire address from pool");
g_mutex_unlock (&stream->priv->lock);
return NULL;
}
}
/**
* gst_rtsp_stream_reserve_address:
* @stream: a #GstRTSPStream
* @address: an address
* @port: a port
* @n_ports: n_ports
* @ttl: a TTL
*
* Reserve @address and @port as the address and port of @stream. The original
* #GstRTSPAddress is cached and copy is returned, so freeing the return value
* won't release the address from the pool.
*
* Returns: (nullable): the #GstRTSPAddress of @stream or %NULL when
* the address could be reserved. gst_rtsp_address_free() after usage.
*/
GstRTSPAddress *
gst_rtsp_stream_reserve_address (GstRTSPStream * stream,
const gchar * address, guint port, guint n_ports, guint ttl)
{
GstRTSPStreamPrivate *priv;
GstRTSPAddress *result;
GInetAddress *addr;
GSocketFamily family;
GstRTSPAddress **addrp;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
g_return_val_if_fail (address != NULL, NULL);
g_return_val_if_fail (port > 0, NULL);
g_return_val_if_fail (n_ports > 0, NULL);
g_return_val_if_fail (ttl > 0, NULL);
priv = stream->priv;
addr = g_inet_address_new_from_string (address);
if (!addr) {
GST_ERROR ("failed to get inet addr from %s", address);
family = G_SOCKET_FAMILY_IPV4;
} else {
family = g_inet_address_get_family (addr);
g_object_unref (addr);
}
if (family == G_SOCKET_FAMILY_IPV6)
addrp = &priv->mcast_addr_v6;
else
addrp = &priv->mcast_addr_v4;
g_mutex_lock (&priv->lock);
if (*addrp == NULL) {
GstRTSPAddressPoolResult res;
if (priv->pool == NULL)
goto no_pool;
res = gst_rtsp_address_pool_reserve_address (priv->pool, address,
port, n_ports, ttl, addrp);
if (res != GST_RTSP_ADDRESS_POOL_OK)
goto no_address;
/* FIXME: Also reserve the same port with unicast ANY address, since that's
* where we are going to bind our socket. */
} else {
if (g_ascii_strcasecmp ((*addrp)->address, address) ||
(*addrp)->port != port || (*addrp)->n_ports != n_ports ||
(*addrp)->ttl != ttl)
goto different_address;
}
result = gst_rtsp_address_copy (*addrp);
g_mutex_unlock (&priv->lock);
return result;
/* ERRORS */
no_pool:
{
GST_ERROR_OBJECT (stream, "no address pool specified");
g_mutex_unlock (&priv->lock);
return NULL;
}
no_address:
{
GST_ERROR_OBJECT (stream, "failed to acquire address %s from pool",
address);
g_mutex_unlock (&priv->lock);
return NULL;
}
different_address:
{
GST_ERROR_OBJECT (stream,
"address %s is not the same as %s that was already reserved",
address, (*addrp)->address);
g_mutex_unlock (&priv->lock);
return NULL;
}
}
/* must be called with lock */
static void
set_sockets_for_udpsinks (GstElement * udpsink[2], GSocket * rtp_socket,
GSocket * rtcp_socket, GSocketFamily family)
{
const gchar *multisink_socket;
if (family == G_SOCKET_FAMILY_IPV6)
multisink_socket = "socket-v6";
else
multisink_socket = "socket";
g_object_set (G_OBJECT (udpsink[0]), multisink_socket, rtp_socket, NULL);
g_object_set (G_OBJECT (udpsink[1]), multisink_socket, rtcp_socket, NULL);
}
static gboolean
create_and_configure_udpsinks (GstRTSPStream * stream, GstElement * udpsink[2])
{
GstRTSPStreamPrivate *priv = stream->priv;
GstElement *udpsink0, *udpsink1;
udpsink0 = gst_element_factory_make ("multiudpsink", NULL);
udpsink1 = gst_element_factory_make ("multiudpsink", NULL);
if (!udpsink0 || !udpsink1)
goto no_udp_protocol;
/* configure sinks */
g_object_set (G_OBJECT (udpsink0), "close-socket", FALSE, NULL);
g_object_set (G_OBJECT (udpsink1), "close-socket", FALSE, NULL);
g_object_set (G_OBJECT (udpsink0), "send-duplicates", FALSE, NULL);
g_object_set (G_OBJECT (udpsink1), "send-duplicates", FALSE, NULL);
g_object_set (G_OBJECT (udpsink0), "buffer-size", priv->buffer_size, NULL);
g_object_set (G_OBJECT (udpsink1), "sync", FALSE, NULL);
/* Needs to be async for RECORD streams, otherwise we will never go to
* PLAYING because the sinks will wait for data while the udpsrc can't
* provide data with timestamps in PAUSED. */
if (priv->sinkpad)
g_object_set (G_OBJECT (udpsink0), "async", FALSE, NULL);
g_object_set (G_OBJECT (udpsink1), "async", FALSE, NULL);
/* join multicast group when adding clients, so we'll start receiving from it.
* We cannot rely on the udpsrc to join the group since its socket is always a
* local unicast one. */
g_object_set (G_OBJECT (udpsink0), "auto-multicast", TRUE, NULL);
g_object_set (G_OBJECT (udpsink1), "auto-multicast", TRUE, NULL);
g_object_set (G_OBJECT (udpsink0), "loop", FALSE, NULL);
g_object_set (G_OBJECT (udpsink1), "loop", FALSE, NULL);
udpsink[0] = udpsink0;
udpsink[1] = udpsink1;
/* update the dscp qos field in the sinks */
update_dscp_qos (stream, udpsink);
return TRUE;
/* ERRORS */
no_udp_protocol:
{
return FALSE;
}
}
/* must be called with lock */
static gboolean
create_and_configure_udpsources (GstElement * udpsrc_out[2],
GSocket * rtp_socket, GSocket * rtcp_socket)
{
GstStateChangeReturn ret;
udpsrc_out[0] = gst_element_factory_make ("udpsrc", NULL);
udpsrc_out[1] = gst_element_factory_make ("udpsrc", NULL);
if (udpsrc_out[0] == NULL || udpsrc_out[1] == NULL)
goto error;
g_object_set (G_OBJECT (udpsrc_out[0]), "socket", rtp_socket, NULL);
g_object_set (G_OBJECT (udpsrc_out[1]), "socket", rtcp_socket, NULL);
/* The udpsrc cannot do the join because its socket is always a local unicast
* one. The udpsink sharing the same socket will do it for us. */
g_object_set (G_OBJECT (udpsrc_out[0]), "auto-multicast", FALSE, NULL);
g_object_set (G_OBJECT (udpsrc_out[1]), "auto-multicast", FALSE, NULL);
g_object_set (G_OBJECT (udpsrc_out[0]), "loop", FALSE, NULL);
g_object_set (G_OBJECT (udpsrc_out[1]), "loop", FALSE, NULL);
g_object_set (G_OBJECT (udpsrc_out[0]), "close-socket", FALSE, NULL);
g_object_set (G_OBJECT (udpsrc_out[1]), "close-socket", FALSE, NULL);
ret = gst_element_set_state (udpsrc_out[0], GST_STATE_READY);
if (ret == GST_STATE_CHANGE_FAILURE)
goto error;
ret = gst_element_set_state (udpsrc_out[1], GST_STATE_READY);
if (ret == GST_STATE_CHANGE_FAILURE)
goto error;
return TRUE;
/* ERRORS */
error:
{
if (udpsrc_out[0]) {
gst_element_set_state (udpsrc_out[0], GST_STATE_NULL);
g_clear_object (&udpsrc_out[0]);
}
if (udpsrc_out[1]) {
gst_element_set_state (udpsrc_out[1], GST_STATE_NULL);
g_clear_object (&udpsrc_out[1]);
}
return FALSE;
}
}
static gboolean
alloc_ports_one_family (GstRTSPStream * stream, GSocketFamily family,
GstElement * udpsrc_out[2], GstElement * udpsink_out[2],
GstRTSPAddress ** server_addr_out, gboolean multicast)
{
GstRTSPStreamPrivate *priv = stream->priv;
GSocket *rtp_socket = NULL;
GSocket *rtcp_socket;
gint tmp_rtp, tmp_rtcp;
guint count;
gint rtpport, rtcpport;
GList *rejected_addresses = NULL;
GstRTSPAddress *addr = NULL;
GInetAddress *inetaddr = NULL;
gchar *addr_str;
GSocketAddress *rtp_sockaddr = NULL;
GSocketAddress *rtcp_sockaddr = NULL;
GstRTSPAddressPool *pool;
g_assert (!udpsrc_out[0]);
g_assert (!udpsrc_out[1]);
g_assert ((!udpsink_out[0] && !udpsink_out[1]) ||
(udpsink_out[0] && udpsink_out[1]));
g_assert (*server_addr_out == NULL);
pool = priv->pool;
count = 0;
/* Start with random port */
tmp_rtp = 0;
rtcp_socket = g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, NULL);
if (!rtcp_socket)
goto no_udp_protocol;
g_socket_set_multicast_loopback (rtcp_socket, FALSE);
/* try to allocate 2 UDP ports, the RTP port should be an even
* number and the RTCP port should be the next (uneven) port */
again:
if (rtp_socket == NULL) {
rtp_socket = g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, NULL);
if (!rtp_socket)
goto no_udp_protocol;
g_socket_set_multicast_loopback (rtp_socket, FALSE);
}
if ((pool && gst_rtsp_address_pool_has_unicast_addresses (pool)) || multicast) {
GstRTSPAddressFlags flags;
if (addr)
rejected_addresses = g_list_prepend (rejected_addresses, addr);
if (!pool)
goto no_ports;
flags = GST_RTSP_ADDRESS_FLAG_EVEN_PORT;
if (multicast)
flags |= GST_RTSP_ADDRESS_FLAG_MULTICAST;
else
flags |= GST_RTSP_ADDRESS_FLAG_UNICAST;
if (family == G_SOCKET_FAMILY_IPV6)
flags |= GST_RTSP_ADDRESS_FLAG_IPV6;
else
flags |= GST_RTSP_ADDRESS_FLAG_IPV4;
addr = gst_rtsp_address_pool_acquire_address (pool, flags, 2);
if (addr == NULL)
goto no_ports;
tmp_rtp = addr->port;
g_clear_object (&inetaddr);
if (multicast)
inetaddr = g_inet_address_new_any (family);
else
inetaddr = g_inet_address_new_from_string (addr->address);
} else {
if (tmp_rtp != 0) {
tmp_rtp += 2;
if (++count > 20)
goto no_ports;
}
if (inetaddr == NULL)
inetaddr = g_inet_address_new_any (family);
}
rtp_sockaddr = g_inet_socket_address_new (inetaddr, tmp_rtp);
if (!g_socket_bind (rtp_socket, rtp_sockaddr, FALSE, NULL)) {
g_object_unref (rtp_sockaddr);
goto again;
}
g_object_unref (rtp_sockaddr);
rtp_sockaddr = g_socket_get_local_address (rtp_socket, NULL);
if (rtp_sockaddr == NULL || !G_IS_INET_SOCKET_ADDRESS (rtp_sockaddr)) {
g_clear_object (&rtp_sockaddr);
goto socket_error;
}
tmp_rtp =
g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (rtp_sockaddr));
g_object_unref (rtp_sockaddr);
/* check if port is even */
if ((tmp_rtp & 1) != 0) {
/* port not even, close and allocate another */
tmp_rtp++;
g_clear_object (&rtp_socket);
goto again;
}
/* set port */
tmp_rtcp = tmp_rtp + 1;
rtcp_sockaddr = g_inet_socket_address_new (inetaddr, tmp_rtcp);
if (!g_socket_bind (rtcp_socket, rtcp_sockaddr, FALSE, NULL)) {
g_object_unref (rtcp_sockaddr);
g_clear_object (&rtp_socket);
goto again;
}
g_object_unref (rtcp_sockaddr);
if (!addr) {
addr = g_slice_new0 (GstRTSPAddress);
addr->address = g_inet_address_to_string (inetaddr);
addr->port = tmp_rtp;
addr->n_ports = 2;
}
addr_str = addr->address;
g_clear_object (&inetaddr);
if (!create_and_configure_udpsources (udpsrc_out, rtp_socket, rtcp_socket)) {
goto no_udp_protocol;
}
g_object_get (G_OBJECT (udpsrc_out[0]), "port", &rtpport, NULL);
g_object_get (G_OBJECT (udpsrc_out[1]), "port", &rtcpport, NULL);
/* this should not happen... */
if (rtpport != tmp_rtp || rtcpport != tmp_rtcp)
goto port_error;
/* This function is called twice (for v4 and v6) but we create only one pair
* of udpsinks. */
if (!udpsink_out[0]
&& !create_and_configure_udpsinks (stream, udpsink_out))
goto no_udp_protocol;
if (multicast) {
g_object_set (G_OBJECT (udpsink_out[0]), "multicast-iface",
priv->multicast_iface, NULL);
g_object_set (G_OBJECT (udpsink_out[1]), "multicast-iface",
priv->multicast_iface, NULL);
g_signal_emit_by_name (udpsink_out[0], "add", addr_str, rtpport, NULL);
g_signal_emit_by_name (udpsink_out[1], "add", addr_str, rtcpport, NULL);
}
set_sockets_for_udpsinks (udpsink_out, rtp_socket, rtcp_socket, family);
*server_addr_out = addr;
g_list_free_full (rejected_addresses, (GDestroyNotify) gst_rtsp_address_free);
g_object_unref (rtp_socket);
g_object_unref (rtcp_socket);
return TRUE;
/* ERRORS */
no_udp_protocol:
{
goto cleanup;
}
no_ports:
{
goto cleanup;
}
port_error:
{
goto cleanup;
}
socket_error:
{
goto cleanup;
}
cleanup:
{
if (inetaddr)
g_object_unref (inetaddr);
g_list_free_full (rejected_addresses,
(GDestroyNotify) gst_rtsp_address_free);
if (addr)
gst_rtsp_address_free (addr);
if (rtp_socket)
g_object_unref (rtp_socket);
if (rtcp_socket)
g_object_unref (rtcp_socket);
return FALSE;
}
}
/**
* gst_rtsp_stream_allocate_udp_sockets:
* @stream: a #GstRTSPStream
* @family: protocol family
* @transport_method: transport method
*
* Allocates RTP and RTCP ports.
*
* Returns: %TRUE if the RTP and RTCP sockets have been succeccully allocated.
* Deprecated: This function shouldn't have been made public
*/
gboolean
gst_rtsp_stream_allocate_udp_sockets (GstRTSPStream * stream,
GSocketFamily family, GstRTSPTransport * ct, gboolean use_client_settings)
{
g_warn_if_reached ();
return FALSE;
}
/**
* gst_rtsp_stream_set_client_side:
* @stream: a #GstRTSPStream
* @client_side: TRUE if this #GstRTSPStream is running on the 'client' side of
* an RTSP connection.
*
* Sets the #GstRTSPStream as a 'client side' stream - used for sending
* streams to an RTSP server via RECORD. This has the practical effect
* of changing which UDP port numbers are used when setting up the local
* side of the stream sending to be either the 'server' or 'client' pair
* of a configured UDP transport.
*/
void
gst_rtsp_stream_set_client_side (GstRTSPStream * stream, gboolean client_side)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_mutex_lock (&priv->lock);
priv->client_side = client_side;
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_is_client_side:
* @stream: a #GstRTSPStream
*
* See gst_rtsp_stream_set_client_side()
*
* Returns: TRUE if this #GstRTSPStream is client-side.
*/
gboolean
gst_rtsp_stream_is_client_side (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
gboolean ret;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
ret = priv->client_side;
g_mutex_unlock (&priv->lock);
return ret;
}
/* must be called with lock */
static gboolean
alloc_ports (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
gboolean ret = TRUE;
if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP) {
ret = alloc_ports_one_family (stream, G_SOCKET_FAMILY_IPV4,
priv->udpsrc_v4, priv->udpsink, &priv->server_addr_v4, FALSE);
ret |= alloc_ports_one_family (stream, G_SOCKET_FAMILY_IPV6,
priv->udpsrc_v6, priv->udpsink, &priv->server_addr_v6, FALSE);
}
/* FIXME: Maybe actually consider the return values? */
if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST) {
ret |= alloc_ports_one_family (stream, G_SOCKET_FAMILY_IPV4,
priv->mcast_udpsrc_v4, priv->mcast_udpsink, &priv->mcast_addr_v4, TRUE);
ret |= alloc_ports_one_family (stream, G_SOCKET_FAMILY_IPV6,
priv->mcast_udpsrc_v6, priv->mcast_udpsink, &priv->mcast_addr_v6, TRUE);
}
return ret;
}
/**
* gst_rtsp_stream_get_server_port:
* @stream: a #GstRTSPStream
* @server_port: (out): result server port
* @family: the port family to get
*
* Fill @server_port with the port pair used by the server. This function can
* only be called when @stream has been joined.
*/
void
gst_rtsp_stream_get_server_port (GstRTSPStream * stream,
GstRTSPRange * server_port, GSocketFamily family)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_return_if_fail (priv->joined_bin != NULL);
g_mutex_lock (&priv->lock);
if (family == G_SOCKET_FAMILY_IPV4) {
if (server_port) {
server_port->min = priv->server_addr_v4->port;
server_port->max =
priv->server_addr_v4->port + priv->server_addr_v4->n_ports - 1;
}
} else {
if (server_port) {
server_port->min = priv->server_addr_v6->port;
server_port->max =
priv->server_addr_v6->port + priv->server_addr_v6->n_ports - 1;
}
}
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_get_rtpsession:
* @stream: a #GstRTSPStream
*
* Get the RTP session of this stream.
*
* Returns: (transfer full): The RTP session of this stream. Unref after usage.
*/
GObject *
gst_rtsp_stream_get_rtpsession (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GObject *session;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((session = priv->session))
g_object_ref (session);
g_mutex_unlock (&priv->lock);
return session;
}
/**
* gst_rtsp_stream_get_encoder:
* @stream: a #GstRTSPStream
*
* Get the SRTP encoder for this stream.
*
* Returns: (transfer full): The SRTP encoder for this stream. Unref after usage.
*/
GstElement *
gst_rtsp_stream_get_srtp_encoder (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstElement *encoder;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((encoder = priv->srtpenc))
g_object_ref (encoder);
g_mutex_unlock (&priv->lock);
return encoder;
}
/**
* gst_rtsp_stream_get_ssrc:
* @stream: a #GstRTSPStream
* @ssrc: (out): result ssrc
*
* Get the SSRC used by the RTP session of this stream. This function can only
* be called when @stream has been joined.
*/
void
gst_rtsp_stream_get_ssrc (GstRTSPStream * stream, guint * ssrc)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_return_if_fail (priv->joined_bin != NULL);
g_mutex_lock (&priv->lock);
if (ssrc && priv->session)
g_object_get (priv->session, "internal-ssrc", ssrc, NULL);
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_set_retransmission_time:
* @stream: a #GstRTSPStream
* @time: a #GstClockTime
*
* Set the amount of time to store retransmission packets.
*/
void
gst_rtsp_stream_set_retransmission_time (GstRTSPStream * stream,
GstClockTime time)
{
GST_DEBUG_OBJECT (stream, "set retransmission time %" G_GUINT64_FORMAT, time);
g_mutex_lock (&stream->priv->lock);
stream->priv->rtx_time = time;
if (stream->priv->rtxsend)
g_object_set (stream->priv->rtxsend, "max-size-time",
GST_TIME_AS_MSECONDS (time), NULL);
g_mutex_unlock (&stream->priv->lock);
}
/**
* gst_rtsp_stream_get_retransmission_time:
* @stream: a #GstRTSPStream
*
* Get the amount of time to store retransmission data.
*
* Returns: the amount of time to store retransmission data.
*/
GstClockTime
gst_rtsp_stream_get_retransmission_time (GstRTSPStream * stream)
{
GstClockTime ret;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), 0);
g_mutex_lock (&stream->priv->lock);
ret = stream->priv->rtx_time;
g_mutex_unlock (&stream->priv->lock);
return ret;
}
/**
* gst_rtsp_stream_set_retransmission_pt:
* @stream: a #GstRTSPStream
* @rtx_pt: a #guint
*
* Set the payload type (pt) for retransmission of this stream.
*/
void
gst_rtsp_stream_set_retransmission_pt (GstRTSPStream * stream, guint rtx_pt)
{
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
GST_DEBUG_OBJECT (stream, "set retransmission pt %u", rtx_pt);
g_mutex_lock (&stream->priv->lock);
stream->priv->rtx_pt = rtx_pt;
if (stream->priv->rtxsend) {
guint pt = gst_rtsp_stream_get_pt (stream);
gchar *pt_s = g_strdup_printf ("%d", pt);
GstStructure *rtx_pt_map = gst_structure_new ("application/x-rtp-pt-map",
pt_s, G_TYPE_UINT, rtx_pt, NULL);
g_object_set (stream->priv->rtxsend, "payload-type-map", rtx_pt_map, NULL);
g_free (pt_s);
gst_structure_free (rtx_pt_map);
}
g_mutex_unlock (&stream->priv->lock);
}
/**
* gst_rtsp_stream_get_retransmission_pt:
* @stream: a #GstRTSPStream
*
* Get the payload-type used for retransmission of this stream
*
* Returns: The retransmission PT.
*/
guint
gst_rtsp_stream_get_retransmission_pt (GstRTSPStream * stream)
{
guint rtx_pt;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), 0);
g_mutex_lock (&stream->priv->lock);
rtx_pt = stream->priv->rtx_pt;
g_mutex_unlock (&stream->priv->lock);
return rtx_pt;
}
/**
* gst_rtsp_stream_set_buffer_size:
* @stream: a #GstRTSPStream
* @size: the buffer size
*
* Set the size of the UDP transmission buffer (in bytes)
* Needs to be set before the stream is joined to a bin.
*
* Since: 1.6
*/
void
gst_rtsp_stream_set_buffer_size (GstRTSPStream * stream, guint size)
{
g_mutex_lock (&stream->priv->lock);
stream->priv->buffer_size = size;
g_mutex_unlock (&stream->priv->lock);
}
/**
* gst_rtsp_stream_get_buffer_size:
* @stream: a #GstRTSPStream
*
* Get the size of the UDP transmission buffer (in bytes)
*
* Returns: the size of the UDP TX buffer
*
* Since: 1.6
*/
guint
gst_rtsp_stream_get_buffer_size (GstRTSPStream * stream)
{
guint buffer_size;
g_mutex_lock (&stream->priv->lock);
buffer_size = stream->priv->buffer_size;
g_mutex_unlock (&stream->priv->lock);
return buffer_size;
}
/* executed from streaming thread */
static void
caps_notify (GstPad * pad, GParamSpec * unused, GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
GstCaps *newcaps, *oldcaps;
newcaps = gst_pad_get_current_caps (pad);
GST_INFO ("stream %p received caps %p, %" GST_PTR_FORMAT, stream, newcaps,
newcaps);
g_mutex_lock (&priv->lock);
oldcaps = priv->caps;
priv->caps = newcaps;
g_mutex_unlock (&priv->lock);
if (oldcaps)
gst_caps_unref (oldcaps);
}
static void
dump_structure (const GstStructure * s)
{
gchar *sstr;
sstr = gst_structure_to_string (s);
GST_INFO ("structure: %s", sstr);
g_free (sstr);
}
static GstRTSPStreamTransport *
find_transport (GstRTSPStream * stream, const gchar * rtcp_from)
{
GstRTSPStreamPrivate *priv = stream->priv;
GList *walk;
GstRTSPStreamTransport *result = NULL;
const gchar *tmp;
gchar *dest;
guint port;
if (rtcp_from == NULL)
return NULL;
tmp = g_strrstr (rtcp_from, ":");
if (tmp == NULL)
return NULL;
port = atoi (tmp + 1);
dest = g_strndup (rtcp_from, tmp - rtcp_from);
g_mutex_lock (&priv->lock);
GST_INFO ("finding %s:%d in %d transports", dest, port,
g_list_length (priv->transports));
for (walk = priv->transports; walk; walk = g_list_next (walk)) {
GstRTSPStreamTransport *trans = walk->data;
const GstRTSPTransport *tr;
gint min, max;
tr = gst_rtsp_stream_transport_get_transport (trans);
if (priv->client_side) {
/* In client side mode the 'destination' is the RTSP server, so send
* to those ports */
min = tr->server_port.min;
max = tr->server_port.max;
} else {
min = tr->client_port.min;
max = tr->client_port.max;
}
if ((g_ascii_strcasecmp (tr->destination, dest) == 0) &&
(min == port || max == port)) {
result = trans;
break;
}
}
if (result)
g_object_ref (result);
g_mutex_unlock (&priv->lock);
g_free (dest);
return result;
}
static GstRTSPStreamTransport *
check_transport (GObject * source, GstRTSPStream * stream)
{
GstStructure *stats;
GstRTSPStreamTransport *trans;
/* see if we have a stream to match with the origin of the RTCP packet */
trans = g_object_get_qdata (source, ssrc_stream_map_key);
if (trans == NULL) {
g_object_get (source, "stats", &stats, NULL);
if (stats) {
const gchar *rtcp_from;
dump_structure (stats);
rtcp_from = gst_structure_get_string (stats, "rtcp-from");
if ((trans = find_transport (stream, rtcp_from))) {
GST_INFO ("%p: found transport %p for source %p", stream, trans,
source);
g_object_set_qdata_full (source, ssrc_stream_map_key, trans,
g_object_unref);
}
gst_structure_free (stats);
}
}
return trans;
}
static void
on_new_ssrc (GObject * session, GObject * source, GstRTSPStream * stream)
{
GstRTSPStreamTransport *trans;
GST_INFO ("%p: new source %p", stream, source);
trans = check_transport (source, stream);
if (trans)
GST_INFO ("%p: source %p for transport %p", stream, source, trans);
}
static void
on_ssrc_sdes (GObject * session, GObject * source, GstRTSPStream * stream)
{
GST_INFO ("%p: new SDES %p", stream, source);
}
static void
on_ssrc_active (GObject * session, GObject * source, GstRTSPStream * stream)
{
GstRTSPStreamTransport *trans;
trans = check_transport (source, stream);
if (trans) {
GST_INFO ("%p: source %p in transport %p is active", stream, source, trans);
gst_rtsp_stream_transport_keep_alive (trans);
}
#ifdef DUMP_STATS
{
GstStructure *stats;
g_object_get (source, "stats", &stats, NULL);
if (stats) {
dump_structure (stats);
gst_structure_free (stats);
}
}
#endif
}
static void
on_bye_ssrc (GObject * session, GObject * source, GstRTSPStream * stream)
{
GST_INFO ("%p: source %p bye", stream, source);
}
static void
on_bye_timeout (GObject * session, GObject * source, GstRTSPStream * stream)
{
GstRTSPStreamTransport *trans;
GST_INFO ("%p: source %p bye timeout", stream, source);
if ((trans = g_object_get_qdata (source, ssrc_stream_map_key))) {
gst_rtsp_stream_transport_set_timed_out (trans, TRUE);
g_object_set_qdata (source, ssrc_stream_map_key, NULL);
}
}
static void
on_timeout (GObject * session, GObject * source, GstRTSPStream * stream)
{
GstRTSPStreamTransport *trans;
GST_INFO ("%p: source %p timeout", stream, source);
if ((trans = g_object_get_qdata (source, ssrc_stream_map_key))) {
gst_rtsp_stream_transport_set_timed_out (trans, TRUE);
g_object_set_qdata (source, ssrc_stream_map_key, NULL);
}
}
static void
on_new_sender_ssrc (GObject * session, GObject * source, GstRTSPStream * stream)
{
GST_INFO ("%p: new sender source %p", stream, source);
#ifndef DUMP_STATS
{
GstStructure *stats;
g_object_get (source, "stats", &stats, NULL);
if (stats) {
dump_structure (stats);
gst_structure_free (stats);
}
}
#endif
}
static void
on_sender_ssrc_active (GObject * session, GObject * source,
GstRTSPStream * stream)
{
#ifndef DUMP_STATS
{
GstStructure *stats;
g_object_get (source, "stats", &stats, NULL);
if (stats) {
dump_structure (stats);
gst_structure_free (stats);
}
}
#endif
}
static void
clear_tr_cache (GstRTSPStreamPrivate * priv, gboolean is_rtp)
{
if (is_rtp) {
g_list_foreach (priv->tr_cache_rtp, (GFunc) g_object_unref, NULL);
g_list_free (priv->tr_cache_rtp);
priv->tr_cache_rtp = NULL;
} else {
g_list_foreach (priv->tr_cache_rtcp, (GFunc) g_object_unref, NULL);
g_list_free (priv->tr_cache_rtcp);
priv->tr_cache_rtcp = NULL;
}
}
static GstFlowReturn
handle_new_sample (GstAppSink * sink, gpointer user_data)
{
GstRTSPStreamPrivate *priv;
GList *walk;
GstSample *sample;
GstBuffer *buffer;
GstRTSPStream *stream;
gboolean is_rtp;
sample = gst_app_sink_pull_sample (sink);
if (!sample)
return GST_FLOW_OK;
stream = (GstRTSPStream *) user_data;
priv = stream->priv;
buffer = gst_sample_get_buffer (sample);
is_rtp = GST_ELEMENT_CAST (sink) == priv->appsink[0];
g_mutex_lock (&priv->lock);
if (is_rtp) {
if (priv->tr_cache_cookie_rtp != priv->transports_cookie) {
clear_tr_cache (priv, is_rtp);
for (walk = priv->transports; walk; walk = g_list_next (walk)) {
GstRTSPStreamTransport *tr = (GstRTSPStreamTransport *) walk->data;
priv->tr_cache_rtp =
g_list_prepend (priv->tr_cache_rtp, g_object_ref (tr));
}
priv->tr_cache_cookie_rtp = priv->transports_cookie;
}
} else {
if (priv->tr_cache_cookie_rtcp != priv->transports_cookie) {
clear_tr_cache (priv, is_rtp);
for (walk = priv->transports; walk; walk = g_list_next (walk)) {
GstRTSPStreamTransport *tr = (GstRTSPStreamTransport *) walk->data;
priv->tr_cache_rtcp =
g_list_prepend (priv->tr_cache_rtcp, g_object_ref (tr));
}
priv->tr_cache_cookie_rtcp = priv->transports_cookie;
}
}
g_mutex_unlock (&priv->lock);
if (is_rtp) {
for (walk = priv->tr_cache_rtp; walk; walk = g_list_next (walk)) {
GstRTSPStreamTransport *tr = (GstRTSPStreamTransport *) walk->data;
gst_rtsp_stream_transport_send_rtp (tr, buffer);
}
} else {
for (walk = priv->tr_cache_rtcp; walk; walk = g_list_next (walk)) {
GstRTSPStreamTransport *tr = (GstRTSPStreamTransport *) walk->data;
gst_rtsp_stream_transport_send_rtcp (tr, buffer);
}
}
gst_sample_unref (sample);
return GST_FLOW_OK;
}
static GstAppSinkCallbacks sink_cb = {
NULL, /* not interested in EOS */
NULL, /* not interested in preroll samples */
handle_new_sample,
};
static GstElement *
get_rtp_encoder (GstRTSPStream * stream, guint session)
{
GstRTSPStreamPrivate *priv = stream->priv;
if (priv->srtpenc == NULL) {
gchar *name;
name = g_strdup_printf ("srtpenc_%u", session);
priv->srtpenc = gst_element_factory_make ("srtpenc", name);
g_free (name);
g_object_set (priv->srtpenc, "random-key", TRUE, NULL);
}
return gst_object_ref (priv->srtpenc);
}
static GstElement *
request_rtp_encoder (GstElement * rtpbin, guint session, GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
GstElement *oldenc, *enc;
GstPad *pad;
gchar *name;
if (priv->idx != session)
return NULL;
GST_DEBUG_OBJECT (stream, "make RTP encoder for session %u", session);
oldenc = priv->srtpenc;
enc = get_rtp_encoder (stream, session);
name = g_strdup_printf ("rtp_sink_%d", session);
pad = gst_element_get_request_pad (enc, name);
g_free (name);
gst_object_unref (pad);
if (oldenc == NULL)
g_signal_emit (stream, gst_rtsp_stream_signals[SIGNAL_NEW_RTP_ENCODER], 0,
enc);
return enc;
}
static GstElement *
request_rtcp_encoder (GstElement * rtpbin, guint session,
GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
GstElement *oldenc, *enc;
GstPad *pad;
gchar *name;
if (priv->idx != session)
return NULL;
GST_DEBUG_OBJECT (stream, "make RTCP encoder for session %u", session);
oldenc = priv->srtpenc;
enc = get_rtp_encoder (stream, session);
name = g_strdup_printf ("rtcp_sink_%d", session);
pad = gst_element_get_request_pad (enc, name);
g_free (name);
gst_object_unref (pad);
if (oldenc == NULL)
g_signal_emit (stream, gst_rtsp_stream_signals[SIGNAL_NEW_RTCP_ENCODER], 0,
enc);
return enc;
}
static GstCaps *
request_key (GstElement * srtpdec, guint ssrc, GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
GstCaps *caps;
GST_DEBUG ("request key %08x", ssrc);
g_mutex_lock (&priv->lock);
if ((caps = g_hash_table_lookup (priv->keys, GINT_TO_POINTER (ssrc))))
gst_caps_ref (caps);
g_mutex_unlock (&priv->lock);
return caps;
}
static GstElement *
request_rtp_rtcp_decoder (GstElement * rtpbin, guint session,
GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
if (priv->idx != session)
return NULL;
if (priv->srtpdec == NULL) {
gchar *name;
name = g_strdup_printf ("srtpdec_%u", session);
priv->srtpdec = gst_element_factory_make ("srtpdec", name);
g_free (name);
g_signal_connect (priv->srtpdec, "request-key",
(GCallback) request_key, stream);
}
return gst_object_ref (priv->srtpdec);
}
/**
* gst_rtsp_stream_request_aux_sender:
* @stream: a #GstRTSPStream
* @sessid: the session id
*
* Creating a rtxsend bin
*
* Returns: (transfer full): a #GstElement.
*
* Since: 1.6
*/
GstElement *
gst_rtsp_stream_request_aux_sender (GstRTSPStream * stream, guint sessid)
{
GstElement *bin;
GstPad *pad;
GstStructure *pt_map;
gchar *name;
guint pt, rtx_pt;
gchar *pt_s;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
pt = gst_rtsp_stream_get_pt (stream);
pt_s = g_strdup_printf ("%u", pt);
rtx_pt = stream->priv->rtx_pt;
GST_INFO ("creating rtxsend with pt %u to %u", pt, rtx_pt);
bin = gst_bin_new (NULL);
stream->priv->rtxsend = gst_element_factory_make ("rtprtxsend", NULL);
pt_map = gst_structure_new ("application/x-rtp-pt-map",
pt_s, G_TYPE_UINT, rtx_pt, NULL);
g_object_set (stream->priv->rtxsend, "payload-type-map", pt_map,
"max-size-time", GST_TIME_AS_MSECONDS (stream->priv->rtx_time), NULL);
g_free (pt_s);
gst_structure_free (pt_map);
gst_bin_add (GST_BIN (bin), gst_object_ref (stream->priv->rtxsend));
pad = gst_element_get_static_pad (stream->priv->rtxsend, "src");
name = g_strdup_printf ("src_%u", sessid);
gst_element_add_pad (bin, gst_ghost_pad_new (name, pad));
g_free (name);
gst_object_unref (pad);
pad = gst_element_get_static_pad (stream->priv->rtxsend, "sink");
name = g_strdup_printf ("sink_%u", sessid);
gst_element_add_pad (bin, gst_ghost_pad_new (name, pad));
g_free (name);
gst_object_unref (pad);
return bin;
}
/**
* gst_rtsp_stream_set_pt_map:
* @stream: a #GstRTSPStream
* @pt: the pt
* @caps: a #GstCaps
*
* Configure a pt map between @pt and @caps.
*/
void
gst_rtsp_stream_set_pt_map (GstRTSPStream * stream, guint pt, GstCaps * caps)
{
GstRTSPStreamPrivate *priv = stream->priv;
g_mutex_lock (&priv->lock);
g_hash_table_insert (priv->ptmap, GINT_TO_POINTER (pt), gst_caps_ref (caps));
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_set_publish_clock_mode:
* @stream: a #GstRTSPStream
* @mode: the clock publish mode
*
* Sets if and how the stream clock should be published according to RFC7273.
*
* Since: 1.8
*/
void
gst_rtsp_stream_set_publish_clock_mode (GstRTSPStream * stream,
GstRTSPPublishClockMode mode)
{
GstRTSPStreamPrivate *priv;
priv = stream->priv;
g_mutex_lock (&priv->lock);
priv->publish_clock_mode = mode;
g_mutex_unlock (&priv->lock);
}
/**
* gst_rtsp_stream_get_publish_clock_mode:
* @factory: a #GstRTSPStream
*
* Gets if and how the stream clock should be published according to RFC7273.
*
* Returns: The GstRTSPPublishClockMode
*
* Since: 1.8
*/
GstRTSPPublishClockMode
gst_rtsp_stream_get_publish_clock_mode (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstRTSPPublishClockMode ret;
priv = stream->priv;
g_mutex_lock (&priv->lock);
ret = priv->publish_clock_mode;
g_mutex_unlock (&priv->lock);
return ret;
}
static GstCaps *
request_pt_map (GstElement * rtpbin, guint session, guint pt,
GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
GstCaps *caps = NULL;
g_mutex_lock (&priv->lock);
if (priv->idx == session) {
caps = g_hash_table_lookup (priv->ptmap, GINT_TO_POINTER (pt));
if (caps) {
GST_DEBUG ("Stream %p, pt %u: caps %" GST_PTR_FORMAT, stream, pt, caps);
gst_caps_ref (caps);
} else {
GST_DEBUG ("Stream %p, pt %u: no caps", stream, pt);
}
}
g_mutex_unlock (&priv->lock);
return caps;
}
static void
pad_added (GstElement * rtpbin, GstPad * pad, GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv = stream->priv;
gchar *name;
GstPadLinkReturn ret;
guint sessid;
GST_DEBUG ("Stream %p added pad %s:%s for pad %s:%s", stream,
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (priv->sinkpad));
name = gst_pad_get_name (pad);
if (sscanf (name, "recv_rtp_src_%u", &sessid) != 1) {
g_free (name);
return;
}
g_free (name);
if (priv->idx != sessid)
return;
if (gst_pad_is_linked (priv->sinkpad)) {
GST_WARNING ("Stream %p: Pad %s:%s is linked already", stream,
GST_DEBUG_PAD_NAME (priv->sinkpad));
return;
}
/* link the RTP pad to the session manager, it should not really fail unless
* this is not really an RTP pad */
ret = gst_pad_link (pad, priv->sinkpad);
if (ret != GST_PAD_LINK_OK)
goto link_failed;
priv->recv_rtp_src = gst_object_ref (pad);
return;
/* ERRORS */
link_failed:
{
GST_ERROR ("Stream %p: Failed to link pads %s:%s and %s:%s", stream,
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (priv->sinkpad));
}
}
static void
on_npt_stop (GstElement * rtpbin, guint session, guint ssrc,
GstRTSPStream * stream)
{
/* TODO: What to do here other than this? */
GST_DEBUG ("Stream %p: Got EOS", stream);
gst_pad_send_event (stream->priv->sinkpad, gst_event_new_eos ());
}
static void
plug_sink (GstBin * bin, GstElement * tee, GstElement * sink,
GstElement ** queue_out)
{
GstPad *pad;
GstPad *teepad;
GstPad *queuepad;
gst_bin_add (bin, sink);
*queue_out = gst_element_factory_make ("queue", NULL);
g_object_set (*queue_out, "max-size-buffers", 1, "max-size-bytes", 0,
"max-size-time", G_GINT64_CONSTANT (0), NULL);
gst_bin_add (bin, *queue_out);
/* link tee to queue */
teepad = gst_element_get_request_pad (tee, "src_%u");
pad = gst_element_get_static_pad (*queue_out, "sink");
gst_pad_link (teepad, pad);
gst_object_unref (pad);
gst_object_unref (teepad);
/* link queue to sink */
queuepad = gst_element_get_static_pad (*queue_out, "src");
pad = gst_element_get_static_pad (sink, "sink");
gst_pad_link (queuepad, pad);
gst_object_unref (queuepad);
gst_object_unref (pad);
}
/* must be called with lock */
static void
create_sender_part (GstRTSPStream * stream, GstBin * bin, GstState state)
{
GstRTSPStreamPrivate *priv;
GstPad *pad;
gboolean is_tcp, is_udp;
gint i;
priv = stream->priv;
is_tcp = priv->protocols & GST_RTSP_LOWER_TRANS_TCP;
is_udp = ((priv->protocols & GST_RTSP_LOWER_TRANS_UDP) ||
(priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST));
for (i = 0; i < 2; i++) {
/* For the sender we create this bit of pipeline for both
* RTP and RTCP. Sync and preroll are enabled on udpsink so
* we need to add a queue before appsink and udpsink to make
* the pipeline not block. For the TCP case, we want to pump
* client as fast as possible anyway. This pipeline is used
* when both TCP and UDP are present.
*
* .--------. .-----. .---------. .---------.
* | rtpbin | | tee | | queue | | udpsink |
* | send->sink src->sink src->sink |
* '--------' | | '---------' '---------'
* | | .---------. .---------.
* | | | queue | | appsink |
* | src->sink src->sink |
* '-----' '---------' '---------'
*
* When only UDP or only TCP is allowed, we skip the tee and queue
* and link the udpsink (for UDP) or appsink (for TCP) directly to
* the session.
*/
/* Only link the RTP send src if we're going to send RTP, link
* the RTCP send src always */
if (!priv->srcpad && i == 0)
continue;
if (is_tcp) {
/* make appsink */
priv->appsink[i] = gst_element_factory_make ("appsink", NULL);
g_object_set (priv->appsink[i], "emit-signals", FALSE, NULL);
gst_app_sink_set_callbacks (GST_APP_SINK_CAST (priv->appsink[i]),
&sink_cb, stream, NULL);
}
/* If we have udp always use a tee because we could have mcast clients
* requesting different ports, in which case we'll have to plug more
* udpsinks. */
if (is_udp) {
/* make tee for RTP/RTCP */
priv->tee[i] = gst_element_factory_make ("tee", NULL);
gst_bin_add (bin, priv->tee[i]);
/* and link to rtpbin send pad */
pad = gst_element_get_static_pad (priv->tee[i], "sink");
gst_pad_link (priv->send_src[i], pad);
gst_object_unref (pad);
if (priv->udpsink[i])
plug_sink (bin, priv->tee[i], priv->udpsink[i], &priv->udpqueue[i]);
if (priv->mcast_udpsink[i])
plug_sink (bin, priv->tee[i], priv->mcast_udpsink[i],
&priv->mcast_udpqueue[i]);
if (is_tcp) {
g_object_set (priv->appsink[i], "async", FALSE, "sync", FALSE, NULL);
plug_sink (bin, priv->tee[i], priv->appsink[i], &priv->appqueue[i]);
}
} else if (is_tcp) {
/* only appsink needed, link it to the session */
pad = gst_element_get_static_pad (priv->appsink[i], "sink");
gst_pad_link (priv->send_src[i], pad);
gst_object_unref (pad);
/* when its only TCP, we need to set sync and preroll to FALSE
* for the sink to avoid deadlock. And this is only needed for
* sink used for RTCP data, not the RTP data. */
if (i == 1)
g_object_set (priv->appsink[i], "async", FALSE, "sync", FALSE, NULL);
}
/* check if we need to set to a special state */
if (state != GST_STATE_NULL) {
if (priv->udpsink[i])
gst_element_set_state (priv->udpsink[i], state);
if (priv->mcast_udpsink[i])
gst_element_set_state (priv->mcast_udpsink[i], state);
if (priv->appsink[i])
gst_element_set_state (priv->appsink[i], state);
if (priv->appqueue[i])
gst_element_set_state (priv->appqueue[i], state);
if (priv->udpqueue[i])
gst_element_set_state (priv->udpqueue[i], state);
if (priv->mcast_udpqueue[i])
gst_element_set_state (priv->mcast_udpqueue[i], state);
if (priv->tee[i])
gst_element_set_state (priv->tee[i], state);
}
}
}
/* must be called with lock */
static void
plug_src (GstRTSPStream * stream, GstBin * bin, GstElement * src,
GstElement * funnel)
{
GstRTSPStreamPrivate *priv;
GstPad *pad, *selpad;
priv = stream->priv;
if (priv->srcpad) {
/* we set and keep these to playing so that they don't cause NO_PREROLL return
* values. This is only relevant for PLAY pipelines */
gst_element_set_state (src, GST_STATE_PLAYING);
gst_element_set_locked_state (src, TRUE);
}
/* add src */
gst_bin_add (bin, src);
/* and link to the funnel */
selpad = gst_element_get_request_pad (funnel, "sink_%u");
pad = gst_element_get_static_pad (src, "src");
gst_pad_link (pad, selpad);
gst_object_unref (pad);
gst_object_unref (selpad);
}
/* must be called with lock */
static void
create_receiver_part (GstRTSPStream * stream, GstBin * bin, GstState state)
{
GstRTSPStreamPrivate *priv;
GstPad *pad;
gboolean is_tcp;
gint i;
priv = stream->priv;
is_tcp = priv->protocols & GST_RTSP_LOWER_TRANS_TCP;
for (i = 0; i < 2; i++) {
/* For the receiver we create this bit of pipeline for both
* RTP and RTCP. We receive RTP/RTCP on appsrc and udpsrc
* and it is all funneled into the rtpbin receive pad.
*
* .--------. .--------. .--------.
* | udpsrc | | funnel | | rtpbin |
* | src->sink src->sink |
* '--------' | | '--------'
* .--------. | |
* | appsrc | | |
* | src->sink |
* '--------' '--------'
*/
if (!priv->sinkpad && i == 0) {
/* Only connect recv RTP sink if we expect to receive RTP. Connect recv
* RTCP sink always */
continue;
}
/* make funnel for the RTP/RTCP receivers */
priv->funnel[i] = gst_element_factory_make ("funnel", NULL);
gst_bin_add (bin, priv->funnel[i]);
pad = gst_element_get_static_pad (priv->funnel[i], "src");
gst_pad_link (pad, priv->recv_sink[i]);
gst_object_unref (pad);
if (priv->udpsrc_v4[i])
plug_src (stream, bin, priv->udpsrc_v4[i], priv->funnel[i]);
if (priv->udpsrc_v6[i])
plug_src (stream, bin, priv->udpsrc_v6[i], priv->funnel[i]);
if (priv->mcast_udpsrc_v4[i])
plug_src (stream, bin, priv->mcast_udpsrc_v4[i], priv->funnel[i]);
if (priv->mcast_udpsrc_v6[i])
plug_src (stream, bin, priv->mcast_udpsrc_v6[i], priv->funnel[i]);
if (is_tcp) {
/* make and add appsrc */
priv->appsrc[i] = gst_element_factory_make ("appsrc", NULL);
priv->appsrc_base_time[i] = -1;
g_object_set (priv->appsrc[i], "format", GST_FORMAT_TIME, "is-live",
TRUE, NULL);
plug_src (stream, bin, priv->appsrc[i], priv->funnel[i]);
}
/* check if we need to set to a special state */
if (state != GST_STATE_NULL) {
gst_element_set_state (priv->funnel[i], state);
}
}
}
static gboolean
check_mcast_part_for_transport (GstRTSPStream * stream,
const GstRTSPTransport * tr)
{
GstRTSPStreamPrivate *priv = stream->priv;
GInetAddress *inetaddr;
GSocketFamily family;
GstRTSPAddress *mcast_addr;
/* Check if it's a ipv4 or ipv6 transport */
inetaddr = g_inet_address_new_from_string (tr->destination);
family = g_inet_address_get_family (inetaddr);
g_object_unref (inetaddr);
/* Select fields corresponding to the family */
if (family == G_SOCKET_FAMILY_IPV4) {
mcast_addr = priv->mcast_addr_v4;
} else {
mcast_addr = priv->mcast_addr_v6;
}
/* We support only one mcast group per family, make sure this transport
* matches it. */
if (!mcast_addr)
goto no_addr;
if (g_ascii_strcasecmp (tr->destination, mcast_addr->address) != 0 ||
tr->port.min != mcast_addr->port ||
tr->port.max != mcast_addr->port + mcast_addr->n_ports - 1 ||
tr->ttl != mcast_addr->ttl)
goto wrong_addr;
return TRUE;
no_addr:
{
GST_WARNING_OBJECT (stream, "Adding mcast transport, but no mcast address "
"has been reserved");
return FALSE;
}
wrong_addr:
{
GST_WARNING_OBJECT (stream, "Adding mcast transport, but it doesn't match "
"the reserved address");
return FALSE;
}
}
/**
* gst_rtsp_stream_join_bin:
* @stream: a #GstRTSPStream
* @bin: (transfer none): a #GstBin to join
* @rtpbin: (transfer none): a rtpbin element in @bin
* @state: the target state of the new elements
*
* Join the #GstBin @bin that contains the element @rtpbin.
*
* @stream will link to @rtpbin, which must be inside @bin. The elements
* added to @bin will be set to the state given in @state.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtsp_stream_join_bin (GstRTSPStream * stream, GstBin * bin,
GstElement * rtpbin, GstState state)
{
GstRTSPStreamPrivate *priv;
guint idx;
gchar *name;
GstPadLinkReturn ret;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
g_return_val_if_fail (GST_IS_BIN (bin), FALSE);
g_return_val_if_fail (GST_IS_ELEMENT (rtpbin), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (priv->joined_bin != NULL)
goto was_joined;
/* create a session with the same index as the stream */
idx = priv->idx;
GST_INFO ("stream %p joining bin as session %u", stream, idx);
if (!alloc_ports (stream))
goto no_ports;
if (priv->profiles & GST_RTSP_PROFILE_SAVP
|| priv->profiles & GST_RTSP_PROFILE_SAVPF) {
/* For SRTP */
g_signal_connect (rtpbin, "request-rtp-encoder",
(GCallback) request_rtp_encoder, stream);
g_signal_connect (rtpbin, "request-rtcp-encoder",
(GCallback) request_rtcp_encoder, stream);
g_signal_connect (rtpbin, "request-rtp-decoder",
(GCallback) request_rtp_rtcp_decoder, stream);
g_signal_connect (rtpbin, "request-rtcp-decoder",
(GCallback) request_rtp_rtcp_decoder, stream);
}
if (priv->sinkpad) {
g_signal_connect (rtpbin, "request-pt-map",
(GCallback) request_pt_map, stream);
}
/* get pads from the RTP session element for sending and receiving
* RTP/RTCP*/
if (priv->srcpad) {
/* get a pad for sending RTP */
name = g_strdup_printf ("send_rtp_sink_%u", idx);
priv->send_rtp_sink = gst_element_get_request_pad (rtpbin, name);
g_free (name);
/* link the RTP pad to the session manager, it should not really fail unless
* this is not really an RTP pad */
ret = gst_pad_link (priv->srcpad, priv->send_rtp_sink);
if (ret != GST_PAD_LINK_OK)
goto link_failed;
name = g_strdup_printf ("send_rtp_src_%u", idx);
priv->send_src[0] = gst_element_get_static_pad (rtpbin, name);
g_free (name);
} else {
/* Need to connect our sinkpad from here */
g_signal_connect (rtpbin, "pad-added", (GCallback) pad_added, stream);
/* EOS */
g_signal_connect (rtpbin, "on-npt-stop", (GCallback) on_npt_stop, stream);
name = g_strdup_printf ("recv_rtp_sink_%u", idx);
priv->recv_sink[0] = gst_element_get_request_pad (rtpbin, name);
g_free (name);
}
name = g_strdup_printf ("send_rtcp_src_%u", idx);
priv->send_src[1] = gst_element_get_request_pad (rtpbin, name);
g_free (name);
name = g_strdup_printf ("recv_rtcp_sink_%u", idx);
priv->recv_sink[1] = gst_element_get_request_pad (rtpbin, name);
g_free (name);
/* get the session */
g_signal_emit_by_name (rtpbin, "get-internal-session", idx, &priv->session);
g_signal_connect (priv->session, "on-new-ssrc", (GCallback) on_new_ssrc,
stream);
g_signal_connect (priv->session, "on-ssrc-sdes", (GCallback) on_ssrc_sdes,
stream);
g_signal_connect (priv->session, "on-ssrc-active",
(GCallback) on_ssrc_active, stream);
g_signal_connect (priv->session, "on-bye-ssrc", (GCallback) on_bye_ssrc,
stream);
g_signal_connect (priv->session, "on-bye-timeout",
(GCallback) on_bye_timeout, stream);
g_signal_connect (priv->session, "on-timeout", (GCallback) on_timeout,
stream);
/* signal for sender ssrc */
g_signal_connect (priv->session, "on-new-sender-ssrc",
(GCallback) on_new_sender_ssrc, stream);
g_signal_connect (priv->session, "on-sender-ssrc-active",
(GCallback) on_sender_ssrc_active, stream);
create_sender_part (stream, bin, state);
create_receiver_part (stream, bin, state);
if (priv->srcpad) {
/* be notified of caps changes */
priv->caps_sig = g_signal_connect (priv->send_src[0], "notify::caps",
(GCallback) caps_notify, stream);
priv->caps = gst_pad_get_current_caps (priv->send_src[0]);
}
priv->joined_bin = bin;
g_mutex_unlock (&priv->lock);
return TRUE;
/* ERRORS */
was_joined:
{
g_mutex_unlock (&priv->lock);
return TRUE;
}
no_ports:
{
g_mutex_unlock (&priv->lock);
GST_WARNING ("failed to allocate ports %u", idx);
return FALSE;
}
link_failed:
{
GST_WARNING ("failed to link stream %u", idx);
gst_object_unref (priv->send_rtp_sink);
priv->send_rtp_sink = NULL;
g_mutex_unlock (&priv->lock);
return FALSE;
}
}
static void
clear_element (GstBin * bin, GstElement ** elementptr)
{
if (*elementptr) {
gst_element_set_locked_state (*elementptr, FALSE);
gst_element_set_state (*elementptr, GST_STATE_NULL);
if (GST_ELEMENT_PARENT (*elementptr))
gst_bin_remove (bin, *elementptr);
else
gst_object_unref (*elementptr);
*elementptr = NULL;
}
}
/**
* gst_rtsp_stream_leave_bin:
* @stream: a #GstRTSPStream
* @bin: (transfer none): a #GstBin
* @rtpbin: (transfer none): a rtpbin #GstElement
*
* Remove the elements of @stream from @bin.
*
* Return: %TRUE on success.
*/
gboolean
gst_rtsp_stream_leave_bin (GstRTSPStream * stream, GstBin * bin,
GstElement * rtpbin)
{
GstRTSPStreamPrivate *priv;
gint i;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
g_return_val_if_fail (GST_IS_BIN (bin), FALSE);
g_return_val_if_fail (GST_IS_ELEMENT (rtpbin), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (priv->joined_bin == NULL)
goto was_not_joined;
if (priv->joined_bin != bin)
goto wrong_bin;
priv->joined_bin = NULL;
/* all transports must be removed by now */
if (priv->transports != NULL)
goto transports_not_removed;
clear_tr_cache (priv, TRUE);
clear_tr_cache (priv, FALSE);
GST_INFO ("stream %p leaving bin", stream);
if (priv->srcpad) {
gst_pad_unlink (priv->srcpad, priv->send_rtp_sink);
g_signal_handler_disconnect (priv->send_src[0], priv->caps_sig);
gst_element_release_request_pad (rtpbin, priv->send_rtp_sink);
gst_object_unref (priv->send_rtp_sink);
priv->send_rtp_sink = NULL;
} else if (priv->recv_rtp_src) {
gst_pad_unlink (priv->recv_rtp_src, priv->sinkpad);
gst_object_unref (priv->recv_rtp_src);
priv->recv_rtp_src = NULL;
}
for (i = 0; i < 2; i++) {
clear_element (bin, &priv->udpsrc_v4[i]);
clear_element (bin, &priv->udpsrc_v6[i]);
clear_element (bin, &priv->udpqueue[i]);
clear_element (bin, &priv->udpsink[i]);
clear_element (bin, &priv->mcast_udpsrc_v4[i]);
clear_element (bin, &priv->mcast_udpsrc_v6[i]);
clear_element (bin, &priv->mcast_udpqueue[i]);
clear_element (bin, &priv->mcast_udpsink[i]);
clear_element (bin, &priv->appsrc[i]);
clear_element (bin, &priv->appqueue[i]);
clear_element (bin, &priv->appsink[i]);
clear_element (bin, &priv->tee[i]);
clear_element (bin, &priv->funnel[i]);
if (priv->sinkpad || i == 1) {
gst_element_release_request_pad (rtpbin, priv->recv_sink[i]);
gst_object_unref (priv->recv_sink[i]);
priv->recv_sink[i] = NULL;
}
}
if (priv->srcpad) {
gst_object_unref (priv->send_src[0]);
priv->send_src[0] = NULL;
}
gst_element_release_request_pad (rtpbin, priv->send_src[1]);
gst_object_unref (priv->send_src[1]);
priv->send_src[1] = NULL;
g_object_unref (priv->session);
priv->session = NULL;
if (priv->caps)
gst_caps_unref (priv->caps);
priv->caps = NULL;
if (priv->srtpenc)
gst_object_unref (priv->srtpenc);
if (priv->srtpdec)
gst_object_unref (priv->srtpdec);
if (priv->mcast_addr_v4)
gst_rtsp_address_free (priv->mcast_addr_v4);
priv->mcast_addr_v4 = NULL;
if (priv->mcast_addr_v6)
gst_rtsp_address_free (priv->mcast_addr_v6);
priv->mcast_addr_v6 = NULL;
if (priv->server_addr_v4)
gst_rtsp_address_free (priv->server_addr_v4);
priv->server_addr_v4 = NULL;
if (priv->server_addr_v6)
gst_rtsp_address_free (priv->server_addr_v6);
priv->server_addr_v6 = NULL;
g_mutex_unlock (&priv->lock);
return TRUE;
was_not_joined:
{
g_mutex_unlock (&priv->lock);
return TRUE;
}
transports_not_removed:
{
GST_ERROR_OBJECT (stream, "can't leave bin (transports not removed)");
g_mutex_unlock (&priv->lock);
return FALSE;
}
wrong_bin:
{
GST_ERROR_OBJECT (stream, "leaving the wrong bin");
g_mutex_unlock (&priv->lock);
return FALSE;
}
}
/**
* gst_rtsp_stream_get_joined_bin:
* @stream: a #GstRTSPStream
*
* Get the previous joined bin with gst_rtsp_stream_join_bin() or NULL.
*
* Return: (transfer full): the joined bin or NULL.
*/
GstBin *
gst_rtsp_stream_get_joined_bin (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstBin *bin = NULL;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
bin = priv->joined_bin ? gst_object_ref (priv->joined_bin) : NULL;
g_mutex_unlock (&priv->lock);
return bin;
}
/**
* gst_rtsp_stream_get_rtpinfo:
* @stream: a #GstRTSPStream
* @rtptime: (allow-none): result RTP timestamp
* @seq: (allow-none): result RTP seqnum
* @clock_rate: (allow-none): the clock rate
* @running_time: (allow-none): result running-time
*
* Retrieve the current rtptime, seq and running-time. This is used to
* construct a RTPInfo reply header.
*
* Returns: %TRUE when rtptime, seq and running-time could be determined.
*/
gboolean
gst_rtsp_stream_get_rtpinfo (GstRTSPStream * stream,
guint * rtptime, guint * seq, guint * clock_rate,
GstClockTime * running_time)
{
GstRTSPStreamPrivate *priv;
GstStructure *stats;
GObjectClass *payobjclass;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
payobjclass = G_OBJECT_GET_CLASS (priv->payloader);
g_mutex_lock (&priv->lock);
/* First try to extract the information from the last buffer on the sinks.
* This will have a more accurate sequence number and timestamp, as between
* the payloader and the sink there can be some queues
*/
if (priv->udpsink[0] || priv->appsink[0]) {
GstSample *last_sample;
if (priv->udpsink[0])
g_object_get (priv->udpsink[0], "last-sample", &last_sample, NULL);
else
g_object_get (priv->appsink[0], "last-sample", &last_sample, NULL);
if (last_sample) {
GstCaps *caps;
GstBuffer *buffer;
GstSegment *segment;
GstRTPBuffer rtp_buffer = GST_RTP_BUFFER_INIT;
caps = gst_sample_get_caps (last_sample);
buffer = gst_sample_get_buffer (last_sample);
segment = gst_sample_get_segment (last_sample);
if (gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp_buffer)) {
if (seq) {
*seq = gst_rtp_buffer_get_seq (&rtp_buffer);
}
if (rtptime) {
*rtptime = gst_rtp_buffer_get_timestamp (&rtp_buffer);
}
gst_rtp_buffer_unmap (&rtp_buffer);
if (running_time) {
*running_time =
gst_segment_to_running_time (segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (buffer));
}
if (clock_rate) {
GstStructure *s = gst_caps_get_structure (caps, 0);
gst_structure_get_int (s, "clock-rate", (gint *) clock_rate);
if (*clock_rate == 0 && running_time)
*running_time = GST_CLOCK_TIME_NONE;
}
gst_sample_unref (last_sample);
goto done;
} else {
gst_sample_unref (last_sample);
}
}
}
if (g_object_class_find_property (payobjclass, "stats")) {
g_object_get (priv->payloader, "stats", &stats, NULL);
if (stats == NULL)
goto no_stats;
if (seq)
gst_structure_get_uint (stats, "seqnum", seq);
if (rtptime)
gst_structure_get_uint (stats, "timestamp", rtptime);
if (running_time)
gst_structure_get_clock_time (stats, "running-time", running_time);
if (clock_rate) {
gst_structure_get_uint (stats, "clock-rate", clock_rate);
if (*clock_rate == 0 && running_time)
*running_time = GST_CLOCK_TIME_NONE;
}
gst_structure_free (stats);
} else {
if (!g_object_class_find_property (payobjclass, "seqnum") ||
!g_object_class_find_property (payobjclass, "timestamp"))
goto no_stats;
if (seq)
g_object_get (priv->payloader, "seqnum", seq, NULL);
if (rtptime)
g_object_get (priv->payloader, "timestamp", rtptime, NULL);
if (running_time)
*running_time = GST_CLOCK_TIME_NONE;
}
done:
g_mutex_unlock (&priv->lock);
return TRUE;
/* ERRORS */
no_stats:
{
GST_WARNING ("Could not get payloader stats");
g_mutex_unlock (&priv->lock);
return FALSE;
}
}
/**
* gst_rtsp_stream_get_caps:
* @stream: a #GstRTSPStream
*
* Retrieve the current caps of @stream.
*
* Returns: (transfer full): the #GstCaps of @stream. use gst_caps_unref()
* after usage.
*/
GstCaps *
gst_rtsp_stream_get_caps (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
GstCaps *result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if ((result = priv->caps))
gst_caps_ref (result);
g_mutex_unlock (&priv->lock);
return result;
}
/**
* gst_rtsp_stream_recv_rtp:
* @stream: a #GstRTSPStream
* @buffer: (transfer full): a #GstBuffer
*
* Handle an RTP buffer for the stream. This method is usually called when a
* message has been received from a client using the TCP transport.
*
* This function takes ownership of @buffer.
*
* Returns: a GstFlowReturn.
*/
GstFlowReturn
gst_rtsp_stream_recv_rtp (GstRTSPStream * stream, GstBuffer * buffer)
{
GstRTSPStreamPrivate *priv;
GstFlowReturn ret;
GstElement *element;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), GST_FLOW_ERROR);
priv = stream->priv;
g_return_val_if_fail (GST_IS_BUFFER (buffer), GST_FLOW_ERROR);
g_return_val_if_fail (priv->joined_bin != NULL, FALSE);
g_mutex_lock (&priv->lock);
if (priv->appsrc[0])
element = gst_object_ref (priv->appsrc[0]);
else
element = NULL;
g_mutex_unlock (&priv->lock);
if (element) {
if (priv->appsrc_base_time[0] == -1) {
/* Take current running_time. This timestamp will be put on
* the first buffer of each stream because we are a live source and so we
* timestamp with the running_time. When we are dealing with TCP, we also
* only timestamp the first buffer (using the DISCONT flag) because a server
* typically bursts data, for which we don't want to compensate by speeding
* up the media. The other timestamps will be interpollated from this one
* using the RTP timestamps. */
GST_OBJECT_LOCK (element);
if (GST_ELEMENT_CLOCK (element)) {
GstClockTime now;
GstClockTime base_time;
now = gst_clock_get_time (GST_ELEMENT_CLOCK (element));
base_time = GST_ELEMENT_CAST (element)->base_time;
priv->appsrc_base_time[0] = now - base_time;
GST_BUFFER_TIMESTAMP (buffer) = priv->appsrc_base_time[0];
GST_DEBUG ("stream %p: first buffer at time %" GST_TIME_FORMAT
", base %" GST_TIME_FORMAT, stream, GST_TIME_ARGS (now),
GST_TIME_ARGS (base_time));
}
GST_OBJECT_UNLOCK (element);
}
ret = gst_app_src_push_buffer (GST_APP_SRC_CAST (element), buffer);
gst_object_unref (element);
} else {
ret = GST_FLOW_OK;
}
return ret;
}
/**
* gst_rtsp_stream_recv_rtcp:
* @stream: a #GstRTSPStream
* @buffer: (transfer full): a #GstBuffer
*
* Handle an RTCP buffer for the stream. This method is usually called when a
* message has been received from a client using the TCP transport.
*
* This function takes ownership of @buffer.
*
* Returns: a GstFlowReturn.
*/
GstFlowReturn
gst_rtsp_stream_recv_rtcp (GstRTSPStream * stream, GstBuffer * buffer)
{
GstRTSPStreamPrivate *priv;
GstFlowReturn ret;
GstElement *element;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), GST_FLOW_ERROR);
priv = stream->priv;
g_return_val_if_fail (GST_IS_BUFFER (buffer), GST_FLOW_ERROR);
if (priv->joined_bin == NULL) {
gst_buffer_unref (buffer);
return GST_FLOW_NOT_LINKED;
}
g_mutex_lock (&priv->lock);
if (priv->appsrc[1])
element = gst_object_ref (priv->appsrc[1]);
else
element = NULL;
g_mutex_unlock (&priv->lock);
if (element) {
if (priv->appsrc_base_time[1] == -1) {
/* Take current running_time. This timestamp will be put on
* the first buffer of each stream because we are a live source and so we
* timestamp with the running_time. When we are dealing with TCP, we also
* only timestamp the first buffer (using the DISCONT flag) because a server
* typically bursts data, for which we don't want to compensate by speeding
* up the media. The other timestamps will be interpollated from this one
* using the RTP timestamps. */
GST_OBJECT_LOCK (element);
if (GST_ELEMENT_CLOCK (element)) {
GstClockTime now;
GstClockTime base_time;
now = gst_clock_get_time (GST_ELEMENT_CLOCK (element));
base_time = GST_ELEMENT_CAST (element)->base_time;
priv->appsrc_base_time[1] = now - base_time;
GST_BUFFER_TIMESTAMP (buffer) = priv->appsrc_base_time[1];
GST_DEBUG ("stream %p: first buffer at time %" GST_TIME_FORMAT
", base %" GST_TIME_FORMAT, stream, GST_TIME_ARGS (now),
GST_TIME_ARGS (base_time));
}
GST_OBJECT_UNLOCK (element);
}
ret = gst_app_src_push_buffer (GST_APP_SRC_CAST (element), buffer);
gst_object_unref (element);
} else {
ret = GST_FLOW_OK;
gst_buffer_unref (buffer);
}
return ret;
}
/* must be called with lock */
static gboolean
update_transport (GstRTSPStream * stream, GstRTSPStreamTransport * trans,
gboolean add)
{
GstRTSPStreamPrivate *priv = stream->priv;
const GstRTSPTransport *tr;
tr = gst_rtsp_stream_transport_get_transport (trans);
switch (tr->lower_transport) {
case GST_RTSP_LOWER_TRANS_UDP_MCAST:
{
if (add) {
if (!check_mcast_part_for_transport (stream, tr))
goto mcast_error;
priv->transports = g_list_prepend (priv->transports, trans);
} else {
priv->transports = g_list_remove (priv->transports, trans);
}
break;
}
case GST_RTSP_LOWER_TRANS_UDP:
{
gchar *dest;
gint min, max;
guint ttl = 0;
dest = tr->destination;
if (tr->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST) {
min = tr->port.min;
max = tr->port.max;
ttl = tr->ttl;
} else if (priv->client_side) {
/* In client side mode the 'destination' is the RTSP server, so send
* to those ports */
min = tr->server_port.min;
max = tr->server_port.max;
} else {
min = tr->client_port.min;
max = tr->client_port.max;
}
if (add) {
if (ttl > 0) {
GST_INFO ("setting ttl-mc %d", ttl);
g_object_set (G_OBJECT (priv->udpsink[0]), "ttl-mc", ttl, NULL);
g_object_set (G_OBJECT (priv->udpsink[1]), "ttl-mc", ttl, NULL);
}
GST_INFO ("adding %s:%d-%d", dest, min, max);
g_signal_emit_by_name (priv->udpsink[0], "add", dest, min, NULL);
g_signal_emit_by_name (priv->udpsink[1], "add", dest, max, NULL);
priv->transports = g_list_prepend (priv->transports, trans);
} else {
GST_INFO ("removing %s:%d-%d", dest, min, max);
g_signal_emit_by_name (priv->udpsink[0], "remove", dest, min, NULL);
g_signal_emit_by_name (priv->udpsink[1], "remove", dest, max, NULL);
priv->transports = g_list_remove (priv->transports, trans);
}
priv->transports_cookie++;
break;
}
case GST_RTSP_LOWER_TRANS_TCP:
if (add) {
GST_INFO ("adding TCP %s", tr->destination);
priv->transports = g_list_prepend (priv->transports, trans);
} else {
GST_INFO ("removing TCP %s", tr->destination);
priv->transports = g_list_remove (priv->transports, trans);
}
priv->transports_cookie++;
break;
default:
goto unknown_transport;
}
return TRUE;
/* ERRORS */
unknown_transport:
{
GST_INFO ("Unknown transport %d", tr->lower_transport);
return FALSE;
}
mcast_error:
{
return FALSE;
}
}
/**
* gst_rtsp_stream_add_transport:
* @stream: a #GstRTSPStream
* @trans: (transfer none): a #GstRTSPStreamTransport
*
* Add the transport in @trans to @stream. The media of @stream will
* then also be send to the values configured in @trans.
*
* @stream must be joined to a bin.
*
* @trans must contain a valid #GstRTSPTransport.
*
* Returns: %TRUE if @trans was added
*/
gboolean
gst_rtsp_stream_add_transport (GstRTSPStream * stream,
GstRTSPStreamTransport * trans)
{
GstRTSPStreamPrivate *priv;
gboolean res;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM_TRANSPORT (trans), FALSE);
g_return_val_if_fail (priv->joined_bin != NULL, FALSE);
g_mutex_lock (&priv->lock);
res = update_transport (stream, trans, TRUE);
g_mutex_unlock (&priv->lock);
return res;
}
/**
* gst_rtsp_stream_remove_transport:
* @stream: a #GstRTSPStream
* @trans: (transfer none): a #GstRTSPStreamTransport
*
* Remove the transport in @trans from @stream. The media of @stream will
* not be sent to the values configured in @trans.
*
* @stream must be joined to a bin.
*
* @trans must contain a valid #GstRTSPTransport.
*
* Returns: %TRUE if @trans was removed
*/
gboolean
gst_rtsp_stream_remove_transport (GstRTSPStream * stream,
GstRTSPStreamTransport * trans)
{
GstRTSPStreamPrivate *priv;
gboolean res;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM_TRANSPORT (trans), FALSE);
g_return_val_if_fail (priv->joined_bin != NULL, FALSE);
g_mutex_lock (&priv->lock);
res = update_transport (stream, trans, FALSE);
g_mutex_unlock (&priv->lock);
return res;
}
/**
* gst_rtsp_stream_update_crypto:
* @stream: a #GstRTSPStream
* @ssrc: the SSRC
* @crypto: (transfer none) (allow-none): a #GstCaps with crypto info
*
* Update the new crypto information for @ssrc in @stream. If information
* for @ssrc did not exist, it will be added. If information
* for @ssrc existed, it will be replaced. If @crypto is %NULL, it will
* be removed from @stream.
*
* Returns: %TRUE if @crypto could be updated
*/
gboolean
gst_rtsp_stream_update_crypto (GstRTSPStream * stream,
guint ssrc, GstCaps * crypto)
{
GstRTSPStreamPrivate *priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
g_return_val_if_fail (crypto == NULL || GST_IS_CAPS (crypto), FALSE);
priv = stream->priv;
GST_DEBUG_OBJECT (stream, "update key for %08x", ssrc);
g_mutex_lock (&priv->lock);
if (crypto)
g_hash_table_insert (priv->keys, GINT_TO_POINTER (ssrc),
gst_caps_ref (crypto));
else
g_hash_table_remove (priv->keys, GINT_TO_POINTER (ssrc));
g_mutex_unlock (&priv->lock);
return TRUE;
}
/**
* gst_rtsp_stream_get_rtp_socket:
* @stream: a #GstRTSPStream
* @family: the socket family
*
* Get the RTP socket from @stream for a @family.
*
* @stream must be joined to a bin.
*
* Returns: (transfer full) (nullable): the RTP socket or %NULL if no
* socket could be allocated for @family. Unref after usage
*/
GSocket *
gst_rtsp_stream_get_rtp_socket (GstRTSPStream * stream, GSocketFamily family)
{
GstRTSPStreamPrivate *priv = GST_RTSP_STREAM_GET_PRIVATE (stream);
GSocket *socket;
const gchar *name;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
g_return_val_if_fail (family == G_SOCKET_FAMILY_IPV4 ||
family == G_SOCKET_FAMILY_IPV6, NULL);
g_return_val_if_fail (priv->udpsink[0], NULL);
if (family == G_SOCKET_FAMILY_IPV6)
name = "socket-v6";
else
name = "socket";
g_object_get (priv->udpsink[0], name, &socket, NULL);
return socket;
}
/**
* gst_rtsp_stream_get_rtcp_socket:
* @stream: a #GstRTSPStream
* @family: the socket family
*
* Get the RTCP socket from @stream for a @family.
*
* @stream must be joined to a bin.
*
* Returns: (transfer full) (nullable): the RTCP socket or %NULL if no
* socket could be allocated for @family. Unref after usage
*/
GSocket *
gst_rtsp_stream_get_rtcp_socket (GstRTSPStream * stream, GSocketFamily family)
{
GstRTSPStreamPrivate *priv = GST_RTSP_STREAM_GET_PRIVATE (stream);
GSocket *socket;
const gchar *name;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
g_return_val_if_fail (family == G_SOCKET_FAMILY_IPV4 ||
family == G_SOCKET_FAMILY_IPV6, NULL);
g_return_val_if_fail (priv->udpsink[1], NULL);
if (family == G_SOCKET_FAMILY_IPV6)
name = "socket-v6";
else
name = "socket";
g_object_get (priv->udpsink[1], name, &socket, NULL);
return socket;
}
/**
* gst_rtsp_stream_set_seqnum:
* @stream: a #GstRTSPStream
* @seqnum: a new sequence number
*
* Configure the sequence number in the payloader of @stream to @seqnum.
*/
void
gst_rtsp_stream_set_seqnum_offset (GstRTSPStream * stream, guint16 seqnum)
{
GstRTSPStreamPrivate *priv;
g_return_if_fail (GST_IS_RTSP_STREAM (stream));
priv = stream->priv;
g_object_set (G_OBJECT (priv->payloader), "seqnum-offset", seqnum, NULL);
}
/**
* gst_rtsp_stream_get_seqnum:
* @stream: a #GstRTSPStream
*
* Get the configured sequence number in the payloader of @stream.
*
* Returns: the sequence number of the payloader.
*/
guint16
gst_rtsp_stream_get_current_seqnum (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
guint seqnum;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), 0);
priv = stream->priv;
g_object_get (G_OBJECT (priv->payloader), "seqnum", &seqnum, NULL);
return seqnum;
}
/**
* gst_rtsp_stream_transport_filter:
* @stream: a #GstRTSPStream
* @func: (scope call) (allow-none): a callback
* @user_data: (closure): user data passed to @func
*
* Call @func for each transport managed by @stream. The result value of @func
* determines what happens to the transport. @func will be called with @stream
* locked so no further actions on @stream can be performed from @func.
*
* If @func returns #GST_RTSP_FILTER_REMOVE, the transport will be removed from
* @stream.
*
* If @func returns #GST_RTSP_FILTER_KEEP, the transport will remain in @stream.
*
* If @func returns #GST_RTSP_FILTER_REF, the transport will remain in @stream but
* will also be added with an additional ref to the result #GList of this
* function..
*
* When @func is %NULL, #GST_RTSP_FILTER_REF will be assumed for each transport.
*
* Returns: (element-type GstRTSPStreamTransport) (transfer full): a #GList with all
* transports for which @func returned #GST_RTSP_FILTER_REF. After usage, each
* element in the #GList should be unreffed before the list is freed.
*/
GList *
gst_rtsp_stream_transport_filter (GstRTSPStream * stream,
GstRTSPStreamTransportFilterFunc func, gpointer user_data)
{
GstRTSPStreamPrivate *priv;
GList *result, *walk, *next;
GHashTable *visited = NULL;
guint cookie;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), NULL);
priv = stream->priv;
result = NULL;
if (func)
visited = g_hash_table_new_full (NULL, NULL, g_object_unref, NULL);
g_mutex_lock (&priv->lock);
restart:
cookie = priv->transports_cookie;
for (walk = priv->transports; walk; walk = next) {
GstRTSPStreamTransport *trans = walk->data;
GstRTSPFilterResult res;
gboolean changed;
next = g_list_next (walk);
if (func) {
/* only visit each transport once */
if (g_hash_table_contains (visited, trans))
continue;
g_hash_table_add (visited, g_object_ref (trans));
g_mutex_unlock (&priv->lock);
res = func (stream, trans, user_data);
g_mutex_lock (&priv->lock);
} else
res = GST_RTSP_FILTER_REF;
changed = (cookie != priv->transports_cookie);
switch (res) {
case GST_RTSP_FILTER_REMOVE:
update_transport (stream, trans, FALSE);
break;
case GST_RTSP_FILTER_REF:
result = g_list_prepend (result, g_object_ref (trans));
break;
case GST_RTSP_FILTER_KEEP:
default:
break;
}
if (changed)
goto restart;
}
g_mutex_unlock (&priv->lock);
if (func)
g_hash_table_unref (visited);
return result;
}
static GstPadProbeReturn
pad_blocking (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
GstRTSPStreamPrivate *priv;
GstRTSPStream *stream;
stream = user_data;
priv = stream->priv;
GST_DEBUG_OBJECT (pad, "now blocking");
g_mutex_lock (&priv->lock);
priv->blocking = TRUE;
g_mutex_unlock (&priv->lock);
gst_element_post_message (priv->payloader,
gst_message_new_element (GST_OBJECT_CAST (priv->payloader),
gst_structure_new_empty ("GstRTSPStreamBlocking")));
return GST_PAD_PROBE_OK;
}
/**
* gst_rtsp_stream_set_blocked:
* @stream: a #GstRTSPStream
* @blocked: boolean indicating we should block or unblock
*
* Blocks or unblocks the dataflow on @stream.
*
* Returns: %TRUE on success
*/
gboolean
gst_rtsp_stream_set_blocked (GstRTSPStream * stream, gboolean blocked)
{
GstRTSPStreamPrivate *priv;
int i;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (blocked) {
priv->blocking = FALSE;
for (i = 0; i < 2; i++) {
if (priv->blocked_id[i] == 0) {
priv->blocked_id[i] = gst_pad_add_probe (priv->send_src[i],
GST_PAD_PROBE_TYPE_BLOCK | GST_PAD_PROBE_TYPE_BUFFER |
GST_PAD_PROBE_TYPE_BUFFER_LIST, pad_blocking,
g_object_ref (stream), g_object_unref);
}
}
} else {
for (i = 0; i < 2; i++) {
if (priv->blocked_id[i] != 0) {
gst_pad_remove_probe (priv->send_src[i], priv->blocked_id[i]);
priv->blocked_id[i] = 0;
}
}
priv->blocking = FALSE;
}
g_mutex_unlock (&priv->lock);
return TRUE;
}
/**
* gst_rtsp_stream_is_blocking:
* @stream: a #GstRTSPStream
*
* Check if @stream is blocking on a #GstBuffer.
*
* Returns: %TRUE if @stream is blocking
*/
gboolean
gst_rtsp_stream_is_blocking (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
gboolean result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
result = priv->blocking;
g_mutex_unlock (&priv->lock);
return result;
}
/**
* gst_rtsp_stream_query_position:
* @stream: a #GstRTSPStream
*
* Query the position of the stream in %GST_FORMAT_TIME. This only considers
* the RTP parts of the pipeline and not the RTCP parts.
*
* Returns: %TRUE if the position could be queried
*/
gboolean
gst_rtsp_stream_query_position (GstRTSPStream * stream, gint64 * position)
{
GstRTSPStreamPrivate *priv;
GstElement *sink;
gboolean ret;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
/* depending on the transport type, it should query corresponding sink */
if ((priv->protocols & GST_RTSP_LOWER_TRANS_UDP) ||
(priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST))
sink = priv->udpsink[0];
else
sink = priv->appsink[0];
if (sink)
gst_object_ref (sink);
g_mutex_unlock (&priv->lock);
if (!sink)
return FALSE;
ret = gst_element_query_position (sink, GST_FORMAT_TIME, position);
gst_object_unref (sink);
return ret;
}
/**
* gst_rtsp_stream_query_stop:
* @stream: a #GstRTSPStream
*
* Query the stop of the stream in %GST_FORMAT_TIME. This only considers
* the RTP parts of the pipeline and not the RTCP parts.
*
* Returns: %TRUE if the stop could be queried
*/
gboolean
gst_rtsp_stream_query_stop (GstRTSPStream * stream, gint64 * stop)
{
GstRTSPStreamPrivate *priv;
GstElement *sink;
GstQuery *query;
gboolean ret;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
/* depending on the transport type, it should query corresponding sink */
if ((priv->protocols & GST_RTSP_LOWER_TRANS_UDP) ||
(priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST))
sink = priv->udpsink[0];
else
sink = priv->appsink[0];
if (sink)
gst_object_ref (sink);
g_mutex_unlock (&priv->lock);
if (!sink)
return FALSE;
query = gst_query_new_segment (GST_FORMAT_TIME);
if ((ret = gst_element_query (sink, query))) {
GstFormat format;
gst_query_parse_segment (query, NULL, &format, NULL, stop);
if (format != GST_FORMAT_TIME)
*stop = -1;
}
gst_query_unref (query);
gst_object_unref (sink);
return ret;
}
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