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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 16:50:47 +00:00
media: add GstNetTimeProvider support
Add a property to let the media provide a GstNetTimeProvider for its clock. Make methods to get the clock and nettimeprovider Add a x-gst-clock property to the SDP with the IP and port number of the nettime provider and also the current time of the clock. This should make it possible for (GStreamer) clients to slave their clock to the server clock.
This commit is contained in:
Wim Taymans
parent
1704018d5d
commit
36ff679558
4 changed files with 190 additions and 0 deletions
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@ -45,6 +45,7 @@ libgstrtspserver_@GST_API_VERSION@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDF
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libgstrtspserver_@GST_API_VERSION@_la_LIBADD = \
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$(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) \
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-lgstrtp-@GST_API_VERSION@ -lgstrtsp-@GST_API_VERSION@ \
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-lgstnet-@GST_API_VERSION@ \
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-lgstsdp-@GST_API_VERSION@ \
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-lgstapp-@GST_API_VERSION@ \
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$(GST_LIBS) $(GIO_LIBS) $(LIBM)
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@ -58,6 +58,9 @@ struct _GstRTSPMediaPrivate
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GSource *source;
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guint id;
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gboolean time_provider;
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GstNetTimeProvider *nettime;
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gboolean is_live;
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gboolean seekable;
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gboolean buffering;
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@ -78,6 +81,7 @@ struct _GstRTSPMediaPrivate
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//#define DEFAULT_PROTOCOLS GST_RTSP_LOWER_TRANS_UDP_MCAST
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#define DEFAULT_EOS_SHUTDOWN FALSE
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#define DEFAULT_BUFFER_SIZE 0x80000
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#define DEFAULT_TIME_PROVIDER FALSE
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/* define to dump received RTCP packets */
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#undef DUMP_STATS
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@ -91,6 +95,7 @@ enum
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PROP_EOS_SHUTDOWN,
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PROP_BUFFER_SIZE,
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PROP_ELEMENT,
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PROP_TIME_PROVIDER,
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PROP_LAST
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};
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@ -165,6 +170,11 @@ gst_rtsp_media_class_init (GstRTSPMediaClass * klass)
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"The GstBin to use for streaming the media", GST_TYPE_ELEMENT,
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G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_EOS_SHUTDOWN,
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g_param_spec_boolean ("time-provider", "Time Provider",
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"Use a NetTimeProvider for clients",
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DEFAULT_TIME_PROVIDER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_rtsp_media_signals[SIGNAL_NEW_STREAM] =
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g_signal_new ("new-stream", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstRTSPMediaClass, new_stream), NULL, NULL,
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@ -213,6 +223,7 @@ gst_rtsp_media_init (GstRTSPMedia * media)
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priv->protocols = DEFAULT_PROTOCOLS;
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priv->eos_shutdown = DEFAULT_EOS_SHUTDOWN;
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priv->buffer_size = DEFAULT_BUFFER_SIZE;
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priv->time_provider = DEFAULT_TIME_PROVIDER;
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}
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static void
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@ -232,6 +243,8 @@ gst_rtsp_media_finalize (GObject * obj)
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if (priv->pipeline)
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gst_object_unref (priv->pipeline);
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if (priv->nettime)
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gst_object_unref (priv->nettime);
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gst_object_unref (priv->element);
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if (priv->auth)
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g_object_unref (priv->auth);
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@ -269,6 +282,9 @@ gst_rtsp_media_get_property (GObject * object, guint propid,
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case PROP_BUFFER_SIZE:
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g_value_set_uint (value, gst_rtsp_media_get_buffer_size (media));
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break;
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case PROP_TIME_PROVIDER:
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g_value_set_boolean (value, gst_rtsp_media_is_time_provider (media));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
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}
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@ -299,6 +315,9 @@ gst_rtsp_media_set_property (GObject * object, guint propid,
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case PROP_BUFFER_SIZE:
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gst_rtsp_media_set_buffer_size (media, g_value_get_uint (value));
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break;
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case PROP_TIME_PROVIDER:
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gst_rtsp_media_use_time_provider (media, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
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}
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@ -413,6 +432,7 @@ gst_rtsp_media_take_pipeline (GstRTSPMedia * media, GstPipeline * pipeline)
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{
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GstRTSPMediaPrivate *priv;
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GstElement *old;
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GstNetTimeProvider *nettime;
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g_return_if_fail (GST_IS_RTSP_MEDIA (media));
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g_return_if_fail (GST_IS_PIPELINE (pipeline));
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@ -422,11 +442,16 @@ gst_rtsp_media_take_pipeline (GstRTSPMedia * media, GstPipeline * pipeline)
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g_mutex_lock (&priv->lock);
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old = priv->pipeline;
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priv->pipeline = GST_ELEMENT_CAST (pipeline);
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nettime = priv->nettime;
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priv->nettime = NULL;
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g_mutex_unlock (&priv->lock);
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if (old)
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gst_object_unref (old);
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if (nettime)
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gst_object_unref (nettime);
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gst_object_ref (priv->element);
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gst_bin_add (GST_BIN_CAST (pipeline), priv->element);
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}
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@ -669,6 +694,53 @@ gst_rtsp_media_get_buffer_size (GstRTSPMedia * media)
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return res;
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}
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/**
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* gst_rtsp_media_use_time_provider:
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* @media: a #GstRTSPMedia
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*
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* Set @media to provide a GstNetTimeProvider.
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*/
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void
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gst_rtsp_media_use_time_provider (GstRTSPMedia * media, gboolean time_provider)
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{
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GstRTSPMediaPrivate *priv;
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g_return_if_fail (GST_IS_RTSP_MEDIA (media));
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priv = media->priv;
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g_mutex_lock (&priv->lock);
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priv->time_provider = time_provider;
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g_mutex_unlock (&priv->lock);
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}
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/**
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* gst_rtsp_media_is_time_provider:
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* @media: a #GstRTSPMedia
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*
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* Check if @media can provide a #GstNetTimeProvider for its pipeline clock.
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*
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* Use gst_rtsp_media_get_time_provider() to get the network clock.
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*
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* Returns: %TRUE if @media can provide a #GstNetTimeProvider.
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*/
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gboolean
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gst_rtsp_media_is_time_provider (GstRTSPMedia * media)
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{
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GstRTSPMediaPrivate *priv;
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gboolean res;
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g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);
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priv = media->priv;
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g_mutex_unlock (&priv->lock);
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res = priv->time_provider;
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g_mutex_unlock (&priv->lock);
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return res;
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}
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/**
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* gst_rtsp_media_set_auth:
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* @media: a #GstRTSPMedia
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@ -1536,6 +1608,10 @@ finish_unprepare (GstRTSPMedia * media)
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gst_bin_remove (GST_BIN (priv->pipeline), priv->rtpbin);
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priv->rtpbin = NULL;
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if (priv->nettime)
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gst_object_unref (priv->nettime);
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priv->nettime = NULL;
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gst_object_unref (priv->pipeline);
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priv->pipeline = NULL;
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@ -1633,6 +1709,88 @@ is_busy:
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}
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}
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/* should be called with state-lock */
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static GstClock *
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get_clock_unlocked (GstRTSPMedia * media)
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{
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if (media->priv->status != GST_RTSP_MEDIA_STATUS_PREPARED) {
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GST_DEBUG_OBJECT (media, "media was not prepared");
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return NULL;
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}
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return gst_pipeline_get_clock (GST_PIPELINE_CAST (media->priv->pipeline));
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}
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/**
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* gst_rtsp_media_get_clock:
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* @media: a #GstRTSPMedia
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*
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* Get the clock that is used by the pipeline in @media.
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*
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* @media must be prepared before this method returns a valid clock object.
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*
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* Returns: the #GstClock used by @media. unref after usage.
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*/
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GstClock *
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gst_rtsp_media_get_clock (GstRTSPMedia * media)
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{
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GstClock *clock;
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GstRTSPMediaPrivate *priv;
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g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), NULL);
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priv = media->priv;
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g_rec_mutex_lock (&priv->state_lock);
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clock = get_clock_unlocked (media);
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g_rec_mutex_unlock (&priv->state_lock);
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return clock;
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}
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/**
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* gst_rtsp_media_get_time_provider:
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* @media: a #GstRTSPMedia
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* @address: an address or NULL
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* @port: a port or 0
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*
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* Get the #GstNetTimeProvider for the clock used by @media. The time provider
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* will listen on @address and @port for client time requests.
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*
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* Returns: the #GstNetTimeProvider of @media.
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*/
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GstNetTimeProvider *
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gst_rtsp_media_get_time_provider (GstRTSPMedia * media, const gchar * address,
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guint16 port)
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{
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GstRTSPMediaPrivate *priv;
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GstNetTimeProvider *provider = NULL;
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g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), NULL);
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priv = media->priv;
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g_rec_mutex_lock (&priv->state_lock);
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if (priv->time_provider) {
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if ((provider = priv->nettime) == NULL) {
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GstClock *clock;
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if (priv->time_provider && (clock = get_clock_unlocked (media))) {
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provider = gst_net_time_provider_new (clock, address, port);
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gst_object_unref (clock);
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priv->nettime = provider;
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}
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}
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}
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g_rec_mutex_unlock (&priv->state_lock);
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if (provider)
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gst_object_ref (provider);
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return provider;
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}
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/**
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* gst_rtsp_media_set_state:
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* @media: a #GstRTSPMedia
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@ -20,6 +20,7 @@
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#include <gst/gst.h>
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#include <gst/rtsp/gstrtsprange.h>
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#include <gst/rtsp/gstrtspurl.h>
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#include <gst/net/gstnet.h>
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#ifndef __GST_RTSP_MEDIA_H__
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#define __GST_RTSP_MEDIA_H__
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@ -139,6 +140,10 @@ GstRTSPAddressPool * gst_rtsp_media_get_address_pool (GstRTSPMedia *media);
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void gst_rtsp_media_set_buffer_size (GstRTSPMedia *media, guint size);
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guint gst_rtsp_media_get_buffer_size (GstRTSPMedia *media);
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void gst_rtsp_media_use_time_provider (GstRTSPMedia *media, gboolean time_provider);
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gboolean gst_rtsp_media_is_time_provider (GstRTSPMedia *media);
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GstNetTimeProvider * gst_rtsp_media_get_time_provider (GstRTSPMedia *media,
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const gchar *address, guint16 port);
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/* prepare the media for playback */
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gboolean gst_rtsp_media_prepare (GstRTSPMedia *media);
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@ -151,6 +156,8 @@ GstRTSPStream * gst_rtsp_media_create_stream (GstRTSPMedia *media,
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GstPad *srcpad);
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/* dealing with the media */
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GstClock * gst_rtsp_media_get_clock (GstRTSPMedia *media);
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guint gst_rtsp_media_n_streams (GstRTSPMedia *media);
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GstRTSPStream * gst_rtsp_media_get_stream (GstRTSPMedia *media, guint idx);
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@ -158,6 +158,30 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
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gst_caps_unref (caps);
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}
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{
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GstNetTimeProvider *provider;
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if ((provider =
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gst_rtsp_media_get_time_provider (media, info->server_ip, 0))) {
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GstClock *clock;
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gchar *address, *str;
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gint port;
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g_object_get (provider, "clock", &clock, "address", &address, "port",
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&port, NULL);
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str = g_strdup_printf ("GstNetTimeProvider %s %s:%d %" G_GUINT64_FORMAT,
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g_type_name (G_TYPE_FROM_INSTANCE (clock)), address, port,
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gst_clock_get_time (clock));
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gst_sdp_message_add_attribute (sdp, "x-gst-clock", str);
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g_free (str);
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gst_object_unref (clock);
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g_free (address);
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gst_object_unref (provider);
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}
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}
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return TRUE;
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/* ERRORS */
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