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Modernizing the documentation, making it simpler to read an modify and allowing us to possibly switch to hotdoc in the future.
1306 lines
44 KiB
C
1306 lines
44 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
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* Copyright (C) 2006 Wim Taymans <wim at fluendo dot com>
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* Copyright (C) <2011> Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-multisocketsink
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* @title: multisocketsink
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* @see_also: tcpserversink
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*
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* This plugin writes incoming data to a set of file descriptors. The
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* file descriptors can be added to multisocketsink by emitting the #GstMultiSocketSink::add signal.
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* For each descriptor added, the #GstMultiSocketSink::client-added signal will be called.
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*
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* A client can also be added with the #GstMultiSocketSink::add-full signal
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* that allows for more control over what and how much data a client
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* initially receives.
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*
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* Clients can be removed from multisocketsink by emitting the #GstMultiSocketSink::remove signal. For
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* each descriptor removed, the #GstMultiSocketSink::client-removed signal will be called. The
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* #GstMultiSocketSink::client-removed signal can also be fired when multisocketsink decides that a
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* client is not active anymore or, depending on the value of the
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* #GstMultiSocketSink:recover-policy property, if the client is reading too slowly.
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* In all cases, multisocketsink will never close a file descriptor itself.
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* The user of multisocketsink is responsible for closing all file descriptors.
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* This can for example be done in response to the #GstMultiSocketSink::client-fd-removed signal.
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* Note that multisocketsink still has a reference to the file descriptor when the
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* #GstMultiSocketSink::client-removed signal is emitted, so that "get-stats" can be performed on
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* the descriptor; it is therefore not safe to close the file descriptor in
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* the #GstMultiSocketSink::client-removed signal handler, and you should use the
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* #GstMultiSocketSink::client-fd-removed signal to safely close the fd.
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*
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* Multisocketsink internally keeps a queue of the incoming buffers and uses a
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* separate thread to send the buffers to the clients. This ensures that no
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* client write can block the pipeline and that clients can read with different
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* speeds.
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*
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* When adding a client to multisocketsink, the #GstMultiSocketSink:sync-method property will define
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* which buffer in the queued buffers will be sent first to the client. Clients
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* can be sent the most recent buffer (which might not be decodable by the
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* client if it is not a keyframe), the next keyframe received in
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* multisocketsink (which can take some time depending on the keyframe rate), or the
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* last received keyframe (which will cause a simple burst-on-connect).
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* Multisocketsink will always keep at least one keyframe in its internal buffers
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* when the sync-mode is set to latest-keyframe.
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*
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* There are additional values for the #GstMultiSocketSink:sync-method
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* property to allow finer control over burst-on-connect behaviour. By selecting
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* the 'burst' method a minimum burst size can be chosen, 'burst-keyframe'
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* additionally requires that the burst begin with a keyframe, and
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* 'burst-with-keyframe' attempts to burst beginning with a keyframe, but will
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* prefer a minimum burst size even if it requires not starting with a keyframe.
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*
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* Multisocketsink can be instructed to keep at least a minimum amount of data
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* expressed in time or byte units in its internal queues with the
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* #GstMultiSocketSink:time-min and #GstMultiSocketSink:bytes-min properties respectively.
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* These properties are useful if the application adds clients with the
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* #GstMultiSocketSink::add-full signal to make sure that a burst connect can
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* actually be honored.
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*
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* When streaming data, clients are allowed to read at a different rate than
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* the rate at which multisocketsink receives data. If the client is reading too
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* fast, no data will be send to the client until multisocketsink receives more
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* data. If the client, however, reads too slowly, data for that client will be
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* queued up in multisocketsink. Two properties control the amount of data
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* (buffers) that is queued in multisocketsink: #GstMultiSocketSink:buffers-max and
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* #GstMultiSocketSink:buffers-soft-max. A client that falls behind by
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* #GstMultiSocketSink:buffers-max is removed from multisocketsink forcibly.
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*
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* A client with a lag of at least #GstMultiSocketSink:buffers-soft-max enters the recovery
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* procedure which is controlled with the #GstMultiSocketSink:recover-policy property.
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* A recover policy of NONE will do nothing, RESYNC_LATEST will send the most recently
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* received buffer as the next buffer for the client, RESYNC_SOFT_LIMIT
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* positions the client to the soft limit in the buffer queue and
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* RESYNC_KEYFRAME positions the client at the most recent keyframe in the
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* buffer queue.
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*
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* multisocketsink will by default synchronize on the clock before serving the
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* buffers to the clients. This behaviour can be disabled by setting the sync
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* property to FALSE. Multisocketsink will by default not do QoS and will never
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* drop late buffers.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst-i18n-plugin.h>
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#include <gst/net/gstnetcontrolmessagemeta.h>
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#include <string.h>
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#include "gstmultisocketsink.h"
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#ifndef G_OS_WIN32
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#include <netinet/in.h>
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#endif
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#define NOT_IMPLEMENTED 0
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GST_DEBUG_CATEGORY_STATIC (multisocketsink_debug);
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#define GST_CAT_DEFAULT (multisocketsink_debug)
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/* MultiSocketSink signals and args */
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enum
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{
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/* methods */
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SIGNAL_ADD,
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SIGNAL_ADD_BURST,
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SIGNAL_REMOVE,
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SIGNAL_REMOVE_FLUSH,
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SIGNAL_GET_STATS,
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/* signals */
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SIGNAL_CLIENT_ADDED,
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SIGNAL_CLIENT_REMOVED,
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SIGNAL_CLIENT_SOCKET_REMOVED,
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LAST_SIGNAL
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};
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#define DEFAULT_SEND_DISPATCHED FALSE
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#define DEFAULT_SEND_MESSAGES FALSE
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enum
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{
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PROP_0,
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PROP_SEND_DISPATCHED,
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PROP_SEND_MESSAGES,
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PROP_LAST
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};
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static void gst_multi_socket_sink_finalize (GObject * object);
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static void gst_multi_socket_sink_add (GstMultiSocketSink * sink,
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GSocket * socket);
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static void gst_multi_socket_sink_add_full (GstMultiSocketSink * sink,
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GSocket * socket, GstSyncMethod sync, GstFormat min_format,
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guint64 min_value, GstFormat max_format, guint64 max_value);
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static void gst_multi_socket_sink_remove (GstMultiSocketSink * sink,
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GSocket * socket);
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static void gst_multi_socket_sink_remove_flush (GstMultiSocketSink * sink,
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GSocket * socket);
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static GstStructure *gst_multi_socket_sink_get_stats (GstMultiSocketSink * sink,
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GSocket * socket);
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static void gst_multi_socket_sink_emit_client_added (GstMultiHandleSink * mhs,
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GstMultiSinkHandle handle);
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static void gst_multi_socket_sink_emit_client_removed (GstMultiHandleSink * mhs,
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GstMultiSinkHandle handle, GstClientStatus status);
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static void gst_multi_socket_sink_stop_pre (GstMultiHandleSink * mhsink);
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static void gst_multi_socket_sink_stop_post (GstMultiHandleSink * mhsink);
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static gboolean gst_multi_socket_sink_start_pre (GstMultiHandleSink * mhsink);
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static gpointer gst_multi_socket_sink_thread (GstMultiHandleSink * mhsink);
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static GstMultiHandleClient
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* gst_multi_socket_sink_new_client (GstMultiHandleSink * mhsink,
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GstMultiSinkHandle handle, GstSyncMethod sync_method);
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static int gst_multi_socket_sink_client_get_fd (GstMultiHandleClient * client);
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static void gst_multi_socket_sink_client_free (GstMultiHandleSink * mhsink,
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GstMultiHandleClient * client);
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static void gst_multi_socket_sink_handle_debug (GstMultiSinkHandle handle,
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gchar debug[30]);
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static gpointer gst_multi_socket_sink_handle_hash_key (GstMultiSinkHandle
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handle);
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static void gst_multi_socket_sink_hash_adding (GstMultiHandleSink * mhsink,
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GstMultiHandleClient * mhclient);
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static void gst_multi_socket_sink_hash_removing (GstMultiHandleSink * mhsink,
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GstMultiHandleClient * mhclient);
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static void gst_multi_socket_sink_stop_sending (GstMultiSocketSink * sink,
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GstSocketClient * client);
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static gboolean gst_multi_socket_sink_socket_condition (GstMultiSinkHandle
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handle, GIOCondition condition, GstMultiSocketSink * sink);
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static gboolean gst_multi_socket_sink_unlock (GstBaseSink * bsink);
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static gboolean gst_multi_socket_sink_unlock_stop (GstBaseSink * bsink);
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static gboolean gst_multi_socket_sink_propose_allocation (GstBaseSink * bsink,
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GstQuery * query);
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static void gst_multi_socket_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_multi_socket_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define gst_multi_socket_sink_parent_class parent_class
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G_DEFINE_TYPE (GstMultiSocketSink, gst_multi_socket_sink,
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GST_TYPE_MULTI_HANDLE_SINK);
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static guint gst_multi_socket_sink_signals[LAST_SIGNAL] = { 0 };
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static void
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gst_multi_socket_sink_class_init (GstMultiSocketSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSinkClass *gstbasesink_class;
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GstMultiHandleSinkClass *gstmultihandlesink_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesink_class = (GstBaseSinkClass *) klass;
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gstmultihandlesink_class = (GstMultiHandleSinkClass *) klass;
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gobject_class->set_property = gst_multi_socket_sink_set_property;
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gobject_class->get_property = gst_multi_socket_sink_get_property;
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gobject_class->finalize = gst_multi_socket_sink_finalize;
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/**
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* GstMultiSocketSink:send-dispatched:
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*
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* Sends a GstNetworkMessageDispatched event upstream whenever a buffer
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* is sent to a client.
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* The event is a CUSTOM event name GstNetworkMessageDispatched and
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* contains:
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*
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* "object" G_TYPE_OBJECT : the object identifying the client
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* "buffer" GST_TYPE_BUFFER : the buffer sent to the client
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*
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* Since: 1.8.0
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*/
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g_object_class_install_property (gobject_class, PROP_SEND_DISPATCHED,
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g_param_spec_boolean ("send-dispatched", "Send Dispatched",
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"If GstNetworkMessageDispatched events should be pushed",
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DEFAULT_SEND_DISPATCHED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstMultiSocketSink:send-messages:
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*
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* Sends a GstNetworkMessage event upstream whenever a buffer
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* is received from a client.
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* The event is a CUSTOM event name GstNetworkMessage and contains:
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*
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* "object" G_TYPE_OBJECT : the object identifying the client
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* "buffer" GST_TYPE_BUFFER : the buffer with data received from the
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* client
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*
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* Since: 1.8.0
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*/
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g_object_class_install_property (gobject_class, PROP_SEND_MESSAGES,
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g_param_spec_boolean ("send-messages", "Send Messages",
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"If GstNetworkMessage events should be pushed", DEFAULT_SEND_MESSAGES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstMultiSocketSink::add:
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* @gstmultisocketsink: the multisocketsink element to emit this signal on
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* @socket: the socket to add to multisocketsink
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*
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* Hand the given open socket to multisocketsink to write to.
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*/
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gst_multi_socket_sink_signals[SIGNAL_ADD] =
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g_signal_new ("add", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GstMultiSocketSinkClass, add), NULL, NULL,
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g_cclosure_marshal_generic, G_TYPE_NONE, 1, G_TYPE_SOCKET);
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/**
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* GstMultiSocketSink::add-full:
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* @gstmultisocketsink: the multisocketsink element to emit this signal on
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* @socket: the socket to add to multisocketsink
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* @sync: the sync method to use
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* @format_min: the format of @value_min
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* @value_min: the minimum amount of data to burst expressed in
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* @format_min units.
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* @format_max: the format of @value_max
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* @value_max: the maximum amount of data to burst expressed in
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* @format_max units.
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*
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* Hand the given open socket to multisocketsink to write to and
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* specify the burst parameters for the new connection.
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*/
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gst_multi_socket_sink_signals[SIGNAL_ADD_BURST] =
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g_signal_new ("add-full", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GstMultiSocketSinkClass, add_full), NULL, NULL,
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g_cclosure_marshal_generic, G_TYPE_NONE, 6,
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G_TYPE_SOCKET, GST_TYPE_SYNC_METHOD, GST_TYPE_FORMAT, G_TYPE_UINT64,
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GST_TYPE_FORMAT, G_TYPE_UINT64);
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/**
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* GstMultiSocketSink::remove:
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* @gstmultisocketsink: the multisocketsink element to emit this signal on
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* @socket: the socket to remove from multisocketsink
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*
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* Remove the given open socket from multisocketsink.
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*/
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gst_multi_socket_sink_signals[SIGNAL_REMOVE] =
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g_signal_new ("remove", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GstMultiSocketSinkClass, remove), NULL, NULL,
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g_cclosure_marshal_generic, G_TYPE_NONE, 1, G_TYPE_SOCKET);
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/**
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* GstMultiSocketSink::remove-flush:
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* @gstmultisocketsink: the multisocketsink element to emit this signal on
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* @socket: the socket to remove from multisocketsink
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*
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* Remove the given open socket from multisocketsink after flushing all
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* the pending data to the socket.
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*/
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gst_multi_socket_sink_signals[SIGNAL_REMOVE_FLUSH] =
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g_signal_new ("remove-flush", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GstMultiSocketSinkClass, remove_flush), NULL, NULL,
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g_cclosure_marshal_generic, G_TYPE_NONE, 1, G_TYPE_SOCKET);
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/**
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* GstMultiSocketSink::get-stats:
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* @gstmultisocketsink: the multisocketsink element to emit this signal on
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* @socket: the socket to get stats of from multisocketsink
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*
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* Get statistics about @socket. This function returns a GstStructure.
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*
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* Returns: a GstStructure with the statistics. The structure contains
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* values that represent: total number of bytes sent, time
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* when the client was added, time when the client was
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* disconnected/removed, time the client is/was active, last activity
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* time (in epoch seconds), number of buffers dropped.
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* All times are expressed in nanoseconds (GstClockTime).
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*/
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gst_multi_socket_sink_signals[SIGNAL_GET_STATS] =
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g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GstMultiSocketSinkClass, get_stats), NULL, NULL,
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g_cclosure_marshal_generic, GST_TYPE_STRUCTURE, 1, G_TYPE_SOCKET);
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/**
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* GstMultiSocketSink::client-added:
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* @gstmultisocketsink: the multisocketsink element that emitted this signal
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* @socket: the socket that was added to multisocketsink
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*
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* The given socket was added to multisocketsink. This signal will
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* be emitted from the streaming thread so application should be prepared
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* for that.
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*/
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gst_multi_socket_sink_signals[SIGNAL_CLIENT_ADDED] =
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g_signal_new ("client-added", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
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G_TYPE_NONE, 1, G_TYPE_OBJECT);
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/**
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* GstMultiSocketSink::client-removed:
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* @gstmultisocketsink: the multisocketsink element that emitted this signal
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* @socket: the socket that is to be removed from multisocketsink
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* @status: the reason why the client was removed
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*
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* The given socket is about to be removed from multisocketsink. This
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* signal will be emitted from the streaming thread so applications should
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* be prepared for that.
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*
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* @gstmultisocketsink still holds a handle to @socket so it is possible to call
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* the get-stats signal from this callback. For the same reason it is
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* not safe to close() and reuse @socket in this callback.
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*/
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gst_multi_socket_sink_signals[SIGNAL_CLIENT_REMOVED] =
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g_signal_new ("client-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
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G_TYPE_NONE, 2, G_TYPE_SOCKET, GST_TYPE_CLIENT_STATUS);
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/**
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* GstMultiSocketSink::client-socket-removed:
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* @gstmultisocketsink: the multisocketsink element that emitted this signal
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* @socket: the socket that was removed from multisocketsink
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*
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* The given socket was removed from multisocketsink. This signal will
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* be emitted from the streaming thread so applications should be prepared
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* for that.
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*
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* In this callback, @gstmultisocketsink has removed all the information
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* associated with @socket and it is therefore not possible to call get-stats
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* with @socket. It is however safe to close() and reuse @fd in the callback.
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*/
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gst_multi_socket_sink_signals[SIGNAL_CLIENT_SOCKET_REMOVED] =
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g_signal_new ("client-socket-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
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G_TYPE_NONE, 1, G_TYPE_SOCKET);
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gst_element_class_set_static_metadata (gstelement_class,
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"Multi socket sink", "Sink/Network",
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"Send data to multiple sockets",
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"Thomas Vander Stichele <thomas at apestaart dot org>, "
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"Wim Taymans <wim@fluendo.com>, "
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|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_unlock);
|
|
gstbasesink_class->unlock_stop =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_unlock_stop);
|
|
gstbasesink_class->propose_allocation =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_propose_allocation);
|
|
|
|
klass->add = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_add);
|
|
klass->add_full = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_add_full);
|
|
klass->remove = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_remove);
|
|
klass->remove_flush = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_remove_flush);
|
|
klass->get_stats = GST_DEBUG_FUNCPTR (gst_multi_socket_sink_get_stats);
|
|
|
|
gstmultihandlesink_class->emit_client_added =
|
|
gst_multi_socket_sink_emit_client_added;
|
|
gstmultihandlesink_class->emit_client_removed =
|
|
gst_multi_socket_sink_emit_client_removed;
|
|
|
|
gstmultihandlesink_class->stop_pre =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_stop_pre);
|
|
gstmultihandlesink_class->stop_post =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_stop_post);
|
|
gstmultihandlesink_class->start_pre =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_start_pre);
|
|
gstmultihandlesink_class->thread =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_thread);
|
|
gstmultihandlesink_class->new_client =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_new_client);
|
|
gstmultihandlesink_class->client_get_fd =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_client_get_fd);
|
|
gstmultihandlesink_class->client_free =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_client_free);
|
|
gstmultihandlesink_class->handle_debug =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_handle_debug);
|
|
gstmultihandlesink_class->handle_hash_key =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_handle_hash_key);
|
|
gstmultihandlesink_class->hash_adding =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_hash_adding);
|
|
gstmultihandlesink_class->hash_removing =
|
|
GST_DEBUG_FUNCPTR (gst_multi_socket_sink_hash_removing);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (multisocketsink_debug, "multisocketsink", 0,
|
|
"Multi socket sink");
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_init (GstMultiSocketSink * this)
|
|
{
|
|
GstMultiHandleSink *mhsink = GST_MULTI_HANDLE_SINK (this);
|
|
|
|
mhsink->handle_hash = g_hash_table_new (g_direct_hash, g_int_equal);
|
|
|
|
this->cancellable = g_cancellable_new ();
|
|
this->send_dispatched = DEFAULT_SEND_DISPATCHED;
|
|
this->send_messages = DEFAULT_SEND_MESSAGES;
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_finalize (GObject * object)
|
|
{
|
|
GstMultiSocketSink *this = GST_MULTI_SOCKET_SINK (object);
|
|
|
|
if (this->cancellable) {
|
|
g_object_unref (this->cancellable);
|
|
this->cancellable = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
/* methods to emit signals */
|
|
|
|
static void
|
|
gst_multi_socket_sink_emit_client_added (GstMultiHandleSink * mhsink,
|
|
GstMultiSinkHandle handle)
|
|
{
|
|
g_signal_emit (mhsink, gst_multi_socket_sink_signals[SIGNAL_CLIENT_ADDED], 0,
|
|
handle.socket);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_emit_client_removed (GstMultiHandleSink * mhsink,
|
|
GstMultiSinkHandle handle, GstClientStatus status)
|
|
{
|
|
g_signal_emit (mhsink, gst_multi_socket_sink_signals[SIGNAL_CLIENT_REMOVED],
|
|
0, handle.socket, status);
|
|
}
|
|
|
|
/* action signals */
|
|
|
|
static void
|
|
gst_multi_socket_sink_add (GstMultiSocketSink * sink, GSocket * socket)
|
|
{
|
|
GstMultiSinkHandle handle;
|
|
|
|
handle.socket = socket;
|
|
gst_multi_handle_sink_add (GST_MULTI_HANDLE_SINK_CAST (sink), handle);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_add_full (GstMultiSocketSink * sink, GSocket * socket,
|
|
GstSyncMethod sync, GstFormat min_format, guint64 min_value,
|
|
GstFormat max_format, guint64 max_value)
|
|
{
|
|
GstMultiSinkHandle handle;
|
|
|
|
handle.socket = socket;
|
|
gst_multi_handle_sink_add_full (GST_MULTI_HANDLE_SINK_CAST (sink), handle,
|
|
sync, min_format, min_value, max_format, max_value);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_remove (GstMultiSocketSink * sink, GSocket * socket)
|
|
{
|
|
GstMultiSinkHandle handle;
|
|
|
|
handle.socket = socket;
|
|
gst_multi_handle_sink_remove (GST_MULTI_HANDLE_SINK_CAST (sink), handle);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_remove_flush (GstMultiSocketSink * sink, GSocket * socket)
|
|
{
|
|
GstMultiSinkHandle handle;
|
|
|
|
handle.socket = socket;
|
|
gst_multi_handle_sink_remove_flush (GST_MULTI_HANDLE_SINK_CAST (sink),
|
|
handle);
|
|
}
|
|
|
|
static GstStructure *
|
|
gst_multi_socket_sink_get_stats (GstMultiSocketSink * sink, GSocket * socket)
|
|
{
|
|
GstMultiSinkHandle handle;
|
|
|
|
handle.socket = socket;
|
|
return gst_multi_handle_sink_get_stats (GST_MULTI_HANDLE_SINK_CAST (sink),
|
|
handle);
|
|
}
|
|
|
|
static GstMultiHandleClient *
|
|
gst_multi_socket_sink_new_client (GstMultiHandleSink * mhsink,
|
|
GstMultiSinkHandle handle, GstSyncMethod sync_method)
|
|
{
|
|
GstSocketClient *client;
|
|
GstMultiHandleClient *mhclient;
|
|
GstMultiHandleSinkClass *mhsinkclass =
|
|
GST_MULTI_HANDLE_SINK_GET_CLASS (mhsink);
|
|
|
|
/* create client datastructure */
|
|
g_assert (G_IS_SOCKET (handle.socket));
|
|
client = g_new0 (GstSocketClient, 1);
|
|
mhclient = (GstMultiHandleClient *) client;
|
|
|
|
mhclient->handle.socket = G_SOCKET (g_object_ref (handle.socket));
|
|
|
|
gst_multi_handle_sink_client_init (mhclient, sync_method);
|
|
mhsinkclass->handle_debug (handle, mhclient->debug);
|
|
|
|
/* set the socket to non blocking */
|
|
g_socket_set_blocking (handle.socket, FALSE);
|
|
|
|
/* we always read from a client */
|
|
mhsinkclass->hash_adding (mhsink, mhclient);
|
|
|
|
gst_multi_handle_sink_setup_dscp_client (mhsink, mhclient);
|
|
|
|
return mhclient;
|
|
}
|
|
|
|
static int
|
|
gst_multi_socket_sink_client_get_fd (GstMultiHandleClient * client)
|
|
{
|
|
return g_socket_get_fd (client->handle.socket);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_client_free (GstMultiHandleSink * mhsink,
|
|
GstMultiHandleClient * client)
|
|
{
|
|
g_assert (G_IS_SOCKET (client->handle.socket));
|
|
|
|
g_signal_emit (mhsink,
|
|
gst_multi_socket_sink_signals[SIGNAL_CLIENT_SOCKET_REMOVED], 0,
|
|
client->handle.socket);
|
|
|
|
g_object_unref (client->handle.socket);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_handle_debug (GstMultiSinkHandle handle, gchar debug[30])
|
|
{
|
|
g_snprintf (debug, 30, "[socket %p]", handle.socket);
|
|
}
|
|
|
|
static gpointer
|
|
gst_multi_socket_sink_handle_hash_key (GstMultiSinkHandle handle)
|
|
{
|
|
return handle.socket;
|
|
}
|
|
|
|
/* handle a read on a client socket,
|
|
* which either indicates a close or should be ignored
|
|
* returns FALSE if some error occured or the client closed. */
|
|
static gboolean
|
|
gst_multi_socket_sink_handle_client_read (GstMultiSocketSink * sink,
|
|
GstSocketClient * client)
|
|
{
|
|
gboolean ret, do_event;
|
|
gchar dummy[256], *mem, *omem;
|
|
gssize nread;
|
|
GError *err = NULL;
|
|
gboolean first = TRUE;
|
|
GstMultiHandleClient *mhclient = (GstMultiHandleClient *) client;
|
|
gssize navail, maxmem;
|
|
|
|
GST_DEBUG_OBJECT (sink, "%s select reports client read", mhclient->debug);
|
|
|
|
ret = TRUE;
|
|
|
|
navail = g_socket_get_available_bytes (mhclient->handle.socket);
|
|
if (navail < 0)
|
|
return TRUE;
|
|
|
|
/* only collect the data in a buffer when we need to send it with an event */
|
|
do_event = sink->send_messages && navail > 0;
|
|
if (do_event) {
|
|
omem = mem = g_malloc (navail);
|
|
maxmem = navail;
|
|
} else {
|
|
mem = dummy;
|
|
maxmem = sizeof (dummy);
|
|
}
|
|
|
|
/* just Read 'n' Drop, could also just drop the client as it's not supposed
|
|
* to write to us except for closing the socket, I guess it's because we
|
|
* like to listen to our customers. */
|
|
do {
|
|
GST_DEBUG_OBJECT (sink, "%s client wants us to read", mhclient->debug);
|
|
|
|
nread =
|
|
g_socket_receive (mhclient->handle.socket, mem, MIN (navail,
|
|
maxmem), sink->cancellable, &err);
|
|
|
|
if (first && nread == 0) {
|
|
/* client sent close, so remove it */
|
|
GST_DEBUG_OBJECT (sink, "%s client asked for close, removing",
|
|
mhclient->debug);
|
|
mhclient->status = GST_CLIENT_STATUS_CLOSED;
|
|
ret = FALSE;
|
|
break;
|
|
} else if (nread < 0) {
|
|
if (err->code == G_IO_ERROR_WOULD_BLOCK)
|
|
break;
|
|
|
|
GST_WARNING_OBJECT (sink, "%s could not read: %s",
|
|
mhclient->debug, err->message);
|
|
mhclient->status = GST_CLIENT_STATUS_ERROR;
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
navail -= nread;
|
|
if (do_event)
|
|
mem += nread;
|
|
first = FALSE;
|
|
} while (navail > 0);
|
|
g_clear_error (&err);
|
|
|
|
if (do_event) {
|
|
if (ret) {
|
|
GstBuffer *buf;
|
|
GstEvent *ev;
|
|
|
|
buf = gst_buffer_new_wrapped (omem, maxmem);
|
|
ev = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
|
|
gst_structure_new ("GstNetworkMessage",
|
|
"object", G_TYPE_OBJECT, mhclient->handle.socket,
|
|
"buffer", GST_TYPE_BUFFER, buf, NULL));
|
|
gst_buffer_unref (buf);
|
|
|
|
gst_pad_push_event (GST_BASE_SINK_PAD (sink), ev);
|
|
} else
|
|
g_free (omem);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* map_memory_output_vector_n:
|
|
* @buf: The #GstBuffer that should be mapped
|
|
* @offset: Offset into the buffer that should be mapped
|
|
* @vectors: (out,array length=num_vectors): an array of #GOutputVector structs to write into
|
|
* @mapinfo: (out,array length=num_vectors): an array of #GstMapInfo structs to write into
|
|
* @num_vectors: the number of elements in @vectors to prevent buffer overruns
|
|
*
|
|
* Maps a buffer into memory, populating a #GOutputVector to use scatter-gather
|
|
* I/O to send the data over a socket. The whole buffer won't be mapped into
|
|
* memory if it consists of more than @num_vectors #GstMemory s.
|
|
*
|
|
* Use #unmap_n_memorys after you are
|
|
* finished with the mappings.
|
|
*
|
|
* Returns: The number of GstMemorys mapped
|
|
*/
|
|
static int
|
|
map_n_memory_output_vector (GstBuffer * buf, size_t offset,
|
|
GOutputVector * vectors, GstMapInfo * mapinfo, int num_vectors)
|
|
{
|
|
guint mem_idx, mem_len;
|
|
gsize mem_skip;
|
|
size_t maxsize;
|
|
int i;
|
|
|
|
g_return_val_if_fail (num_vectors > 0, 0);
|
|
memset (vectors, 0, sizeof (GOutputVector) * num_vectors);
|
|
|
|
maxsize = gst_buffer_get_size (buf) - offset;
|
|
if (!gst_buffer_find_memory (buf, offset, maxsize, &mem_idx, &mem_len,
|
|
&mem_skip))
|
|
g_error ("Unable to map memory at offset %" G_GSIZE_FORMAT ", buffer "
|
|
"length is %" G_GSIZE_FORMAT, offset, gst_buffer_get_size (buf));
|
|
|
|
for (i = 0; i < mem_len && i < num_vectors; i++) {
|
|
GstMapInfo map = { 0 };
|
|
GstMemory *mem = gst_buffer_peek_memory (buf, mem_idx + i);
|
|
if (!gst_memory_map (mem, &map, GST_MAP_READ))
|
|
g_error ("Unable to map memory %p. This should never happen.", mem);
|
|
|
|
if (i == 0) {
|
|
vectors[i].buffer = map.data + mem_skip;
|
|
vectors[i].size = map.size - mem_skip;
|
|
} else {
|
|
vectors[i].buffer = map.data;
|
|
vectors[i].size = map.size;
|
|
}
|
|
mapinfo[i] = map;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/**
|
|
* map_n_memory_output_vector:
|
|
* @buf: The #GstBuffer that should be mapped
|
|
* @offset: Offset into the buffer that should be mapped
|
|
* @vectors: (out,array length=num_vectors): an array of #GOutputVector structs to write into
|
|
* @num_vectors: the number of elements in @vectors to prevent buffer overruns
|
|
*
|
|
* Returns: The number of GstMemorys mapped
|
|
*/
|
|
static void
|
|
unmap_n_memorys (GstMapInfo * mapinfo, int num_mappings)
|
|
{
|
|
int i;
|
|
g_return_if_fail (num_mappings > 0);
|
|
|
|
for (i = 0; i < num_mappings; i++)
|
|
gst_memory_unmap (mapinfo[i].memory, &mapinfo[i]);
|
|
}
|
|
|
|
static gsize
|
|
gst_buffer_get_cmsg_list (GstBuffer * buf, GSocketControlMessage ** msgs,
|
|
gsize msg_space)
|
|
{
|
|
gpointer iter_state = NULL;
|
|
GstMeta *meta;
|
|
gsize msg_count = 0;
|
|
|
|
while ((meta = gst_buffer_iterate_meta (buf, &iter_state)) != NULL
|
|
&& msg_count < msg_space) {
|
|
if (meta->info->api == GST_NET_CONTROL_MESSAGE_META_API_TYPE)
|
|
msgs[msg_count++] = ((GstNetControlMessageMeta *) meta)->message;
|
|
}
|
|
|
|
return msg_count;
|
|
}
|
|
|
|
#define CMSG_MAX 255
|
|
|
|
static gssize
|
|
gst_multi_socket_sink_write (GstMultiSocketSink * sink,
|
|
GSocket * sock, GstBuffer * buffer, gsize bufoffset,
|
|
GCancellable * cancellable, GError ** err)
|
|
{
|
|
GstMapInfo maps[8];
|
|
GOutputVector vec[8];
|
|
guint mems_mapped;
|
|
gssize wrote;
|
|
GSocketControlMessage *cmsgs[CMSG_MAX];
|
|
gsize msg_count;
|
|
|
|
mems_mapped = map_n_memory_output_vector (buffer, bufoffset, vec, maps, 8);
|
|
|
|
msg_count = gst_buffer_get_cmsg_list (buffer, cmsgs, CMSG_MAX);
|
|
|
|
wrote =
|
|
g_socket_send_message (sock, NULL, vec, mems_mapped, cmsgs, msg_count, 0,
|
|
cancellable, err);
|
|
unmap_n_memorys (maps, mems_mapped);
|
|
return wrote;
|
|
}
|
|
|
|
/* Handle a write on a client,
|
|
* which indicates a read request from a client.
|
|
*
|
|
* For each client we maintain a queue of GstBuffers that contain the raw bytes
|
|
* we need to send to the client.
|
|
*
|
|
* We first check to see if we need to send streamheaders. If so, we queue them.
|
|
*
|
|
* Then we run into the main loop that tries to send as many buffers as
|
|
* possible. It will first exhaust the mhclient->sending queue and if the queue
|
|
* is empty, it will pick a buffer from the global queue.
|
|
*
|
|
* Sending the buffers from the mhclient->sending queue is basically writing
|
|
* the bytes to the socket and maintaining a count of the bytes that were
|
|
* sent. When the buffer is completely sent, it is removed from the
|
|
* mhclient->sending queue and we try to pick a new buffer for sending.
|
|
*
|
|
* When the sending returns a partial buffer we stop sending more data as
|
|
* the next send operation could block.
|
|
*
|
|
* This functions returns FALSE if some error occured.
|
|
*/
|
|
static gboolean
|
|
gst_multi_socket_sink_handle_client_write (GstMultiSocketSink * sink,
|
|
GstSocketClient * client)
|
|
{
|
|
gboolean more;
|
|
gboolean flushing;
|
|
GstClockTime now;
|
|
GTimeVal nowtv;
|
|
GError *err = NULL;
|
|
GstMultiHandleSink *mhsink = GST_MULTI_HANDLE_SINK (sink);
|
|
GstMultiHandleClient *mhclient = (GstMultiHandleClient *) client;
|
|
GstMultiHandleSinkClass *mhsinkclass =
|
|
GST_MULTI_HANDLE_SINK_GET_CLASS (mhsink);
|
|
|
|
|
|
g_get_current_time (&nowtv);
|
|
now = GST_TIMEVAL_TO_TIME (nowtv);
|
|
|
|
flushing = mhclient->status == GST_CLIENT_STATUS_FLUSHING;
|
|
|
|
more = TRUE;
|
|
do {
|
|
if (!mhclient->sending) {
|
|
/* client is not working on a buffer */
|
|
if (mhclient->bufpos == -1) {
|
|
/* client is too fast, remove from write queue until new buffer is
|
|
* available */
|
|
gst_multi_socket_sink_stop_sending (sink, client);
|
|
|
|
/* if we flushed out all of the client buffers, we can stop */
|
|
if (mhclient->flushcount == 0)
|
|
goto flushed;
|
|
|
|
return TRUE;
|
|
} else {
|
|
/* client can pick a buffer from the global queue */
|
|
GstBuffer *buf;
|
|
GstClockTime timestamp;
|
|
|
|
/* for new connections, we need to find a good spot in the
|
|
* bufqueue to start streaming from */
|
|
if (mhclient->new_connection && !flushing) {
|
|
gint position =
|
|
gst_multi_handle_sink_new_client_position (mhsink, mhclient);
|
|
|
|
if (position >= 0) {
|
|
/* we got a valid spot in the queue */
|
|
mhclient->new_connection = FALSE;
|
|
mhclient->bufpos = position;
|
|
} else {
|
|
/* cannot send data to this client yet */
|
|
gst_multi_socket_sink_stop_sending (sink, client);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* we flushed all remaining buffers, no need to get a new one */
|
|
if (mhclient->flushcount == 0)
|
|
goto flushed;
|
|
|
|
/* grab buffer */
|
|
buf = g_array_index (mhsink->bufqueue, GstBuffer *, mhclient->bufpos);
|
|
mhclient->bufpos--;
|
|
|
|
/* update stats */
|
|
timestamp = GST_BUFFER_TIMESTAMP (buf);
|
|
if (mhclient->first_buffer_ts == GST_CLOCK_TIME_NONE)
|
|
mhclient->first_buffer_ts = timestamp;
|
|
if (timestamp != -1)
|
|
mhclient->last_buffer_ts = timestamp;
|
|
|
|
/* decrease flushcount */
|
|
if (mhclient->flushcount != -1)
|
|
mhclient->flushcount--;
|
|
|
|
GST_LOG_OBJECT (sink, "%s client %p at position %d",
|
|
mhclient->debug, client, mhclient->bufpos);
|
|
|
|
/* queueing a buffer will ref it */
|
|
mhsinkclass->client_queue_buffer (mhsink, mhclient, buf);
|
|
|
|
/* need to start from the first byte for this new buffer */
|
|
mhclient->bufoffset = 0;
|
|
}
|
|
}
|
|
|
|
/* see if we need to send something */
|
|
if (mhclient->sending) {
|
|
gssize wrote;
|
|
GstBuffer *head;
|
|
|
|
/* pick first buffer from list */
|
|
head = GST_BUFFER (mhclient->sending->data);
|
|
|
|
wrote = gst_multi_socket_sink_write (sink, mhclient->handle.socket, head,
|
|
mhclient->bufoffset, sink->cancellable, &err);
|
|
|
|
if (wrote < 0) {
|
|
/* hmm error.. */
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CLOSED)) {
|
|
goto connection_reset;
|
|
} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
|
|
/* write would block, try again later */
|
|
GST_LOG_OBJECT (sink, "write would block %p",
|
|
mhclient->handle.socket);
|
|
more = FALSE;
|
|
g_clear_error (&err);
|
|
} else {
|
|
goto write_error;
|
|
}
|
|
} else {
|
|
if (wrote < (gst_buffer_get_size (head) - mhclient->bufoffset)) {
|
|
/* partial write, try again now */
|
|
GST_LOG_OBJECT (sink,
|
|
"partial write on %p of %" G_GSSIZE_FORMAT " bytes",
|
|
mhclient->handle.socket, wrote);
|
|
mhclient->bufoffset += wrote;
|
|
} else {
|
|
if (sink->send_dispatched) {
|
|
gst_pad_push_event (GST_BASE_SINK_PAD (mhsink),
|
|
gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
|
|
gst_structure_new ("GstNetworkMessageDispatched",
|
|
"object", G_TYPE_OBJECT, mhclient->handle.socket,
|
|
"buffer", GST_TYPE_BUFFER, head, NULL)));
|
|
}
|
|
/* complete buffer was written, we can proceed to the next one */
|
|
mhclient->sending = g_slist_remove (mhclient->sending, head);
|
|
gst_buffer_unref (head);
|
|
/* make sure we start from byte 0 for the next buffer */
|
|
mhclient->bufoffset = 0;
|
|
}
|
|
/* update stats */
|
|
mhclient->bytes_sent += wrote;
|
|
mhclient->last_activity_time = now;
|
|
mhsink->bytes_served += wrote;
|
|
}
|
|
}
|
|
} while (more);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
flushed:
|
|
{
|
|
GST_DEBUG_OBJECT (sink, "%s flushed, removing", mhclient->debug);
|
|
mhclient->status = GST_CLIENT_STATUS_REMOVED;
|
|
return FALSE;
|
|
}
|
|
connection_reset:
|
|
{
|
|
GST_DEBUG_OBJECT (sink, "%s connection reset by peer, removing",
|
|
mhclient->debug);
|
|
mhclient->status = GST_CLIENT_STATUS_CLOSED;
|
|
g_clear_error (&err);
|
|
return FALSE;
|
|
}
|
|
write_error:
|
|
{
|
|
GST_WARNING_OBJECT (sink,
|
|
"%s could not write, removing client: %s", mhclient->debug,
|
|
err->message);
|
|
g_clear_error (&err);
|
|
mhclient->status = GST_CLIENT_STATUS_ERROR;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ensure_condition (GstMultiSocketSink * sink, GstSocketClient * client,
|
|
GIOCondition condition)
|
|
{
|
|
GstMultiHandleClient *mhclient = (GstMultiHandleClient *) client;
|
|
|
|
if (client->condition == condition)
|
|
return;
|
|
|
|
if (client->source) {
|
|
g_source_destroy (client->source);
|
|
g_source_unref (client->source);
|
|
}
|
|
if (condition && sink->main_context) {
|
|
client->source = g_socket_create_source (mhclient->handle.socket,
|
|
condition, sink->cancellable);
|
|
g_source_set_callback (client->source,
|
|
(GSourceFunc) gst_multi_socket_sink_socket_condition,
|
|
gst_object_ref (sink), (GDestroyNotify) gst_object_unref);
|
|
g_source_attach (client->source, sink->main_context);
|
|
} else {
|
|
client->source = NULL;
|
|
condition = 0;
|
|
}
|
|
client->condition = condition;
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_hash_adding (GstMultiHandleSink * mhsink,
|
|
GstMultiHandleClient * mhclient)
|
|
{
|
|
GstMultiSocketSink *sink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
GstSocketClient *client = (GstSocketClient *) (mhclient);
|
|
|
|
ensure_condition (sink, client,
|
|
G_IO_IN | G_IO_OUT | G_IO_PRI | G_IO_ERR | G_IO_HUP);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_hash_removing (GstMultiHandleSink * mhsink,
|
|
GstMultiHandleClient * mhclient)
|
|
{
|
|
GstMultiSocketSink *sink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
GstSocketClient *client = (GstSocketClient *) (mhclient);
|
|
|
|
ensure_condition (sink, client, 0);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_stop_sending (GstMultiSocketSink * sink,
|
|
GstSocketClient * client)
|
|
{
|
|
ensure_condition (sink, client, G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP);
|
|
}
|
|
|
|
/* Handle the clients. This is called when a socket becomes ready
|
|
* to read or writable. Badly behaving clients are put on a
|
|
* garbage list and removed.
|
|
*/
|
|
static gboolean
|
|
gst_multi_socket_sink_socket_condition (GstMultiSinkHandle handle,
|
|
GIOCondition condition, GstMultiSocketSink * sink)
|
|
{
|
|
GList *clink;
|
|
GstSocketClient *client;
|
|
gboolean ret = TRUE;
|
|
GstMultiHandleClient *mhclient;
|
|
GstMultiHandleSink *mhsink = GST_MULTI_HANDLE_SINK (sink);
|
|
GstMultiHandleSinkClass *mhsinkclass =
|
|
GST_MULTI_HANDLE_SINK_GET_CLASS (mhsink);
|
|
|
|
CLIENTS_LOCK (mhsink);
|
|
clink = g_hash_table_lookup (mhsink->handle_hash,
|
|
mhsinkclass->handle_hash_key (handle));
|
|
if (clink == NULL) {
|
|
ret = FALSE;
|
|
goto done;
|
|
}
|
|
|
|
client = clink->data;
|
|
mhclient = (GstMultiHandleClient *) client;
|
|
|
|
if (mhclient->status != GST_CLIENT_STATUS_FLUSHING
|
|
&& mhclient->status != GST_CLIENT_STATUS_OK) {
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clink);
|
|
ret = FALSE;
|
|
goto done;
|
|
}
|
|
|
|
if ((condition & G_IO_ERR)) {
|
|
GST_WARNING_OBJECT (sink, "%s has error", mhclient->debug);
|
|
mhclient->status = GST_CLIENT_STATUS_ERROR;
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clink);
|
|
ret = FALSE;
|
|
goto done;
|
|
} else if ((condition & G_IO_HUP)) {
|
|
mhclient->status = GST_CLIENT_STATUS_CLOSED;
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clink);
|
|
ret = FALSE;
|
|
goto done;
|
|
}
|
|
if ((condition & G_IO_IN) || (condition & G_IO_PRI)) {
|
|
/* handle client read */
|
|
if (!gst_multi_socket_sink_handle_client_read (sink, client)) {
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clink);
|
|
ret = FALSE;
|
|
goto done;
|
|
}
|
|
}
|
|
if ((condition & G_IO_OUT)) {
|
|
/* handle client write */
|
|
if (!gst_multi_socket_sink_handle_client_write (sink, client)) {
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clink);
|
|
ret = FALSE;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
done:
|
|
CLIENTS_UNLOCK (mhsink);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_socket_sink_timeout (GstMultiSocketSink * sink)
|
|
{
|
|
GstClockTime now;
|
|
GTimeVal nowtv;
|
|
GList *clients;
|
|
GstMultiHandleSink *mhsink = GST_MULTI_HANDLE_SINK (sink);
|
|
|
|
g_get_current_time (&nowtv);
|
|
now = GST_TIMEVAL_TO_TIME (nowtv);
|
|
|
|
CLIENTS_LOCK (mhsink);
|
|
for (clients = mhsink->clients; clients; clients = clients->next) {
|
|
GstSocketClient *client;
|
|
GstMultiHandleClient *mhclient;
|
|
|
|
client = clients->data;
|
|
mhclient = (GstMultiHandleClient *) client;
|
|
if (mhsink->timeout > 0
|
|
&& now - mhclient->last_activity_time > mhsink->timeout) {
|
|
mhclient->status = GST_CLIENT_STATUS_SLOW;
|
|
gst_multi_handle_sink_remove_client_link (mhsink, clients);
|
|
}
|
|
}
|
|
CLIENTS_UNLOCK (mhsink);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* we handle the client communication in another thread so that we do not block
|
|
* the gstreamer thread while we select() on the client fds */
|
|
static gpointer
|
|
gst_multi_socket_sink_thread (GstMultiHandleSink * mhsink)
|
|
{
|
|
GstMultiSocketSink *sink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
GSource *timeout = NULL;
|
|
|
|
while (mhsink->running) {
|
|
if (mhsink->timeout > 0) {
|
|
timeout = g_timeout_source_new (mhsink->timeout / GST_MSECOND);
|
|
|
|
g_source_set_callback (timeout,
|
|
(GSourceFunc) gst_multi_socket_sink_timeout, gst_object_ref (sink),
|
|
(GDestroyNotify) gst_object_unref);
|
|
g_source_attach (timeout, sink->main_context);
|
|
}
|
|
|
|
/* Returns after handling all pending events or when
|
|
* _wakeup() was called. In any case we have to add
|
|
* a new timeout because something happened.
|
|
*/
|
|
g_main_context_iteration (sink->main_context, TRUE);
|
|
|
|
if (timeout) {
|
|
g_source_destroy (timeout);
|
|
g_source_unref (timeout);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMultiSocketSink *sink = GST_MULTI_SOCKET_SINK (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SEND_DISPATCHED:
|
|
sink->send_dispatched = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SEND_MESSAGES:
|
|
sink->send_messages = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMultiSocketSink *sink = GST_MULTI_SOCKET_SINK (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SEND_DISPATCHED:
|
|
g_value_set_boolean (value, sink->send_dispatched);
|
|
break;
|
|
case PROP_SEND_MESSAGES:
|
|
g_value_set_boolean (value, sink->send_messages);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_socket_sink_start_pre (GstMultiHandleSink * mhsink)
|
|
{
|
|
GstMultiSocketSink *mssink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
GstMultiHandleSinkClass *mhsinkclass =
|
|
GST_MULTI_HANDLE_SINK_GET_CLASS (mhsink);
|
|
GList *clients;
|
|
|
|
GST_INFO_OBJECT (mssink, "starting");
|
|
|
|
mssink->main_context = g_main_context_new ();
|
|
|
|
CLIENTS_LOCK (mhsink);
|
|
for (clients = mhsink->clients; clients; clients = clients->next) {
|
|
GstSocketClient *client = clients->data;
|
|
GstMultiHandleClient *mhclient = (GstMultiHandleClient *) client;
|
|
|
|
if (client->source)
|
|
continue;
|
|
mhsinkclass->hash_adding (mhsink, mhclient);
|
|
}
|
|
CLIENTS_UNLOCK (mhsink);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
multisocketsink_hash_remove (gpointer key, gpointer value, gpointer data)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_stop_pre (GstMultiHandleSink * mhsink)
|
|
{
|
|
GstMultiSocketSink *mssink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
|
|
if (mssink->main_context)
|
|
g_main_context_wakeup (mssink->main_context);
|
|
}
|
|
|
|
static void
|
|
gst_multi_socket_sink_stop_post (GstMultiHandleSink * mhsink)
|
|
{
|
|
GstMultiSocketSink *mssink = GST_MULTI_SOCKET_SINK (mhsink);
|
|
|
|
if (mssink->main_context) {
|
|
g_main_context_unref (mssink->main_context);
|
|
mssink->main_context = NULL;
|
|
}
|
|
|
|
g_hash_table_foreach_remove (mhsink->handle_hash, multisocketsink_hash_remove,
|
|
mssink);
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_socket_sink_unlock (GstBaseSink * bsink)
|
|
{
|
|
GstMultiSocketSink *sink;
|
|
|
|
sink = GST_MULTI_SOCKET_SINK (bsink);
|
|
|
|
GST_DEBUG_OBJECT (sink, "set to flushing");
|
|
g_cancellable_cancel (sink->cancellable);
|
|
if (sink->main_context)
|
|
g_main_context_wakeup (sink->main_context);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* will be called only between calls to start() and stop() */
|
|
static gboolean
|
|
gst_multi_socket_sink_unlock_stop (GstBaseSink * bsink)
|
|
{
|
|
GstMultiSocketSink *sink;
|
|
|
|
sink = GST_MULTI_SOCKET_SINK (bsink);
|
|
|
|
GST_DEBUG_OBJECT (sink, "unset flushing");
|
|
g_object_unref (sink->cancellable);
|
|
sink->cancellable = g_cancellable_new ();
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_socket_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
|
|
{
|
|
/* we support some meta */
|
|
gst_query_add_allocation_meta (query, GST_NET_CONTROL_MESSAGE_META_API_TYPE,
|
|
NULL);
|
|
|
|
return TRUE;
|
|
}
|