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socketsrc: handle GstNetworkMessage events

Browse source 
Add a property to handle GstNetworkMessage events. These events contain
a buffer that is sent on the socket to allow for simple bidirectional
communication.
This commit is contained in:
Wim Taymans 2015-12-04 11:17:37 +01:00
parent 5e55968546
commit 0e1a858d89
2 changed files with 84 additions and 0 deletions
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83
gst/tcp/gstsocketsrc.c
View file

@ -65,11 +65,14 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_CAPS_ANY);
#define DEFAULT_SEND_MESSAGES FALSE
enum
{
PROP_0,
PROP_SOCKET,
PROP_CAPS,
PROP_SEND_MESSAGES
};
enum
@ -87,6 +90,7 @@ G_DEFINE_TYPE (GstSocketSrc, gst_socket_src, GST_TYPE_PUSH_SRC);
static void gst_socket_src_finalize (GObject * gobject);
static GstCaps *gst_socketsrc_getcaps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_socketsrc_event (GstBaseSrc * src, GstEvent * event);
static GstFlowReturn gst_socket_src_fill (GstPushSrc * psrc,
GstBuffer * outbuf);
static gboolean gst_socket_src_unlock (GstBaseSrc * bsrc);
@ -126,6 +130,24 @@ gst_socket_src_class_init (GstSocketSrcClass * klass)
"The caps of the source pad", GST_TYPE_CAPS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstSocketSrc:send-messages:
*
* Control if the source will handle GstNetworkMessage events.
* The event is a CUSTOM event named 'GstNetworkMessage' and contains:
*
* "buffer", GST_TYPE_BUFFER : the buffer with data to send
*
* The buffer in the event will be sent on the socket. This allows
* for simple bidirectional communication.
*
* Since: 1.8.0
**/
g_object_class_install_property (gobject_class, PROP_SEND_MESSAGES,
g_param_spec_boolean ("send-messages", "Send Messages",
"If GstNetworkMessage events should be handled",
DEFAULT_SEND_MESSAGES, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_socket_src_signals[CONNECTION_CLOSED_BY_PEER] =
g_signal_new ("connection-closed-by-peer", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstSocketSrcClass,
@ -140,6 +162,7 @@ gst_socket_src_class_init (GstSocketSrcClass * klass)
"Thomas Vander Stichele <thomas at apestaart dot org>, "
"William Manley <will@williammanley.net>");
gstbasesrc_class->event = gst_socketsrc_event;
gstbasesrc_class->get_caps = gst_socketsrc_getcaps;
gstbasesrc_class->unlock = gst_socket_src_unlock;
gstbasesrc_class->unlock_stop = gst_socket_src_unlock_stop;
@ -154,6 +177,7 @@ gst_socket_src_init (GstSocketSrc * this)
{
this->socket = NULL;
this->cancellable = g_cancellable_new ();
this->send_messages = DEFAULT_SEND_MESSAGES;
}
static void
@ -169,6 +193,59 @@ gst_socket_src_finalize (GObject * gobject)
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
static gboolean
gst_socketsrc_event (GstBaseSrc * bsrc, GstEvent * event)
{
GstSocketSrc *src;
gboolean res = FALSE;
src = GST_SOCKET_SRC (bsrc);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:
if (src->send_messages && gst_event_has_name (event, "GstNetworkMessage")) {
const GstStructure *str = gst_event_get_structure (event);
GSocket *socket;
GST_OBJECT_LOCK (src);
if ((socket = src->socket))
g_object_ref (socket);
GST_OBJECT_UNLOCK (src);
if (socket) {
GstBuffer *buf;
GstMapInfo map;
GError *err = NULL;
gssize ret;
gst_structure_get (str, "buffer", GST_TYPE_BUFFER, &buf, NULL);
if (buf) {
gst_buffer_map (buf, &map, GST_MAP_READ);
GST_LOG ("sending buffer of size %" G_GSIZE_FORMAT, map.size);
ret = g_socket_send_with_blocking (socket, (gchar *) map.data,
map.size, FALSE, src->cancellable, &err);
gst_buffer_unmap (buf, &map);
if (ret == -1) {
GST_WARNING ("could not send message: %s", err->message);
g_clear_error (&err);
res = FALSE;
} else
res = TRUE;
gst_buffer_unref (buf);
}
g_object_unref (socket);
}
}
break;
default:
res = GST_BASE_SRC_CLASS (parent_class)->event (bsrc, event);
break;
}
return res;
}
static GstCaps *
gst_socketsrc_getcaps (GstBaseSrc * src, GstCaps * filter)
{
@ -344,6 +421,9 @@ gst_socket_src_set_property (GObject * object, guint prop_id,
gst_pad_mark_reconfigure (GST_BASE_SRC_PAD (socketsrc));
break;
}
case PROP_SEND_MESSAGES:
socketsrc->send_messages = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -365,6 +445,9 @@ gst_socket_src_get_property (GObject * object, guint prop_id,
gst_value_set_caps (value, socketsrc->caps);
GST_OBJECT_UNLOCK (socketsrc);
break;
case PROP_SEND_MESSAGES:
g_value_set_boolean (value, socketsrc->send_messages);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;

1
gst/tcp/gstsocketsrc.h
View file

@ -50,6 +50,7 @@ struct _GstSocketSrc {
/*< private >*/
GstCaps *caps;
GSocket *socket;
gboolean send_messages;
GCancellable *cancellable;
};