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6b4cf938a4
Original commit message from CVS: * gst/tcp/gstmultifdsink.c: (gst_sync_method_get_type), (gst_multi_fd_sink_class_init): Updates, fixes, and typo corrections for multifdsink. No functional changes.
2614 lines
86 KiB
C
2614 lines
86 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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*
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-multifdsink
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* @short_description: Send data to multiple file descriptors
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* @see_also: tcpserversink
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*
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* <refsect2>
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* <para>
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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 multifdsink by emitting the "add" signal.
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* For each descriptor added, the "client-added" signal will be called.
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* </para>
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* <para>
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* As of version 0.10.8, a client can also be added with the "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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* </para>
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* <para>
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* Clients can be removed from multifdsink by emitting the "remove" signal. For
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* each descriptor removed, the "client-removed" signal will be called. The
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* "client-removed" signal can also be fired when multifdsink decides that a
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* client is not active anymore or, depending on the value of the
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* "recover-policy" property, if the client is reading too slowly.
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* In all cases, multifdsink will never close a file descriptor itself.
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* The user of multifdsink is responsible for closing all file descriptors.
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* This can for example be done in response to the "client-fd-removed" signal.
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* Note that multifdsink still has a reference to the file descriptor when the
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* "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 "client-removed" signal handler, and you should use the
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* "client-fd-removed" signal to safely close the fd.
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* </para>
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* <para>
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* Multifdsink 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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* </para>
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* <para>
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* When adding a client to multifdsink, the "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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* multifdsink (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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* Multifdsink 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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* </para>
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* <para>
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* As of version 0.10.8, there are additional values for the 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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* </para>
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* <para>
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* Multifdsink 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 the
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* "time-min" and "bytes-min" properties respectively. These properties are
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* useful if the application adds clients with the "add-full" signal to
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* make sure that a burst connect can actually be honored.
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* </para>
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* <para>
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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 multifdsink receives data. If the client is reading too
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* fast, no data will be send to the client until multifdsink 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 multifdsink. Two properties control the amount of data
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* (buffers) that is queued in multifdsink: "buffers-max" and
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* "buffers-soft-max". A client that falls behind by "buffers-max" is removed
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* from multifdsink forcibly.
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* </para>
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* <para>
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* A client with a lag of at least "buffers-soft-max" enters the recovery
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* procedure which is controlled with the "recover-policy" property. A recover
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* 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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* </para>
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* <para>
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* multifdsink 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. Multifdsink will by default not do QoS and will never
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* drop late buffers.
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* </para>
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* </refsect2>
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*
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* Last reviewed on 2006-09-12 (0.10.10)
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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 <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#ifdef HAVE_FIONREAD_IN_SYS_FILIO
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#include <sys/filio.h>
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#endif
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#include "gstmultifdsink.h"
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#include "gsttcp-marshal.h"
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#define NOT_IMPLEMENTED 0
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/* the select call is also performed on the control sockets, that way
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* we can send special commands to unblock or restart the select call */
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#define CONTROL_RESTART 'R' /* restart the select call */
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#define CONTROL_STOP 'S' /* stop the select call */
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#define CONTROL_SOCKETS(sink) sink->control_sock
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#define WRITE_SOCKET(sink) sink->control_sock[1]
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#define READ_SOCKET(sink) sink->control_sock[0]
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#define SEND_COMMAND(sink, command) \
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G_STMT_START { \
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unsigned char c; c = command; \
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write (WRITE_SOCKET(sink).fd, &c, 1); \
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} G_STMT_END
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#define READ_COMMAND(sink, command, res) \
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G_STMT_START { \
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res = read(READ_SOCKET(sink).fd, &command, 1);\
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} G_STMT_END
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/* elementfactory information */
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static const GstElementDetails gst_multi_fd_sink_details =
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GST_ELEMENT_DETAILS ("Multi filedescriptor sink",
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"Sink/Network",
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"Send data to multiple filedescriptors",
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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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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (multifdsink_debug);
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#define GST_CAT_DEFAULT (multifdsink_debug)
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/* MultiFdSink 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_CLEAR,
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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_FD_REMOVED,
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LAST_SIGNAL
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};
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/* this is really arbitrarily chosen */
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#define DEFAULT_PROTOCOL GST_TCP_PROTOCOL_NONE
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#define DEFAULT_MODE GST_FDSET_MODE_POLL
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#define DEFAULT_BUFFERS_MAX -1
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#define DEFAULT_BUFFERS_SOFT_MAX -1
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#define DEFAULT_TIME_MIN -1
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#define DEFAULT_BYTES_MIN -1
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#define DEFAULT_BUFFERS_MIN -1
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#define DEFAULT_UNIT_TYPE GST_UNIT_TYPE_BUFFERS
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#define DEFAULT_UNITS_MAX -1
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#define DEFAULT_UNITS_SOFT_MAX -1
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#define DEFAULT_RECOVER_POLICY GST_RECOVER_POLICY_NONE
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#define DEFAULT_TIMEOUT 0
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#define DEFAULT_SYNC_METHOD GST_SYNC_METHOD_LATEST
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#define DEFAULT_BURST_UNIT GST_UNIT_TYPE_UNDEFINED
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#define DEFAULT_BURST_VALUE 0
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enum
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{
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PROP_0,
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PROP_PROTOCOL,
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PROP_MODE,
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PROP_BUFFERS_QUEUED,
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PROP_BYTES_QUEUED,
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PROP_TIME_QUEUED,
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PROP_UNIT_TYPE,
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PROP_UNITS_MAX,
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PROP_UNITS_SOFT_MAX,
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PROP_BUFFERS_MAX,
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PROP_BUFFERS_SOFT_MAX,
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PROP_TIME_MIN,
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PROP_BYTES_MIN,
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PROP_BUFFERS_MIN,
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PROP_RECOVER_POLICY,
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PROP_TIMEOUT,
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PROP_SYNC_METHOD,
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PROP_BYTES_TO_SERVE,
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PROP_BYTES_SERVED,
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PROP_BURST_UNIT,
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PROP_BURST_VALUE,
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};
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#define GST_TYPE_RECOVER_POLICY (gst_recover_policy_get_type())
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static GType
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gst_recover_policy_get_type (void)
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{
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static GType recover_policy_type = 0;
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static const GEnumValue recover_policy[] = {
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{GST_RECOVER_POLICY_NONE,
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"Do not try to recover", "none"},
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{GST_RECOVER_POLICY_RESYNC_LATEST,
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"Resync client to latest buffer", "latest"},
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{GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT,
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"Resync client to soft limit", "soft-limit"},
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{GST_RECOVER_POLICY_RESYNC_KEYFRAME,
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"Resync client to most recent keyframe", "keyframe"},
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{0, NULL, NULL},
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};
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if (!recover_policy_type) {
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recover_policy_type =
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g_enum_register_static ("GstRecoverPolicy", recover_policy);
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}
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return recover_policy_type;
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}
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#define GST_TYPE_SYNC_METHOD (gst_sync_method_get_type())
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static GType
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gst_sync_method_get_type (void)
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{
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static GType sync_method_type = 0;
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static const GEnumValue sync_method[] = {
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{GST_SYNC_METHOD_LATEST,
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"Serve starting from the latest buffer", "latest"},
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{GST_SYNC_METHOD_NEXT_KEYFRAME,
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"Serve starting from the next keyframe", "next-keyframe"},
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{GST_SYNC_METHOD_LATEST_KEYFRAME,
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"Serve everything since the latest keyframe (burst)",
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"latest-keyframe"},
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{GST_SYNC_METHOD_BURST, "Serve burst-value data to client", "burst"},
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{GST_SYNC_METHOD_BURST_KEYFRAME,
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"Serve burst-value data starting on a keyframe",
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"burst-keyframe"},
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{GST_SYNC_METHOD_BURST_WITH_KEYFRAME,
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"Serve burst-value data preferably starting on a keyframe",
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"burst-with-keyframe"},
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{0, NULL, NULL},
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};
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if (!sync_method_type) {
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sync_method_type = g_enum_register_static ("GstSyncMethod", sync_method);
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}
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return sync_method_type;
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}
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#define GST_TYPE_UNIT_TYPE (gst_unit_type_get_type())
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static GType
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gst_unit_type_get_type (void)
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{
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static GType unit_type_type = 0;
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static const GEnumValue unit_type[] = {
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{GST_UNIT_TYPE_UNDEFINED, "Undefined", "undefined"},
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{GST_UNIT_TYPE_BUFFERS, "Buffers", "buffers"},
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{GST_UNIT_TYPE_BYTES, "Bytes", "bytes"},
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{GST_UNIT_TYPE_TIME, "Time", "time"},
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{0, NULL, NULL},
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};
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if (!unit_type_type) {
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unit_type_type = g_enum_register_static ("GstTCPUnitType", unit_type);
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}
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return unit_type_type;
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}
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#define GST_TYPE_CLIENT_STATUS (gst_client_status_get_type())
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static GType
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gst_client_status_get_type (void)
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{
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static GType client_status_type = 0;
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static const GEnumValue client_status[] = {
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{GST_CLIENT_STATUS_OK, "ok", "ok"},
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{GST_CLIENT_STATUS_CLOSED, "Closed", "closed"},
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{GST_CLIENT_STATUS_REMOVED, "Removed", "removed"},
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{GST_CLIENT_STATUS_SLOW, "Too slow", "slow"},
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{GST_CLIENT_STATUS_ERROR, "Error", "error"},
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{GST_CLIENT_STATUS_DUPLICATE, "Duplicate", "duplicate"},
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{0, NULL, NULL},
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};
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if (!client_status_type) {
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client_status_type =
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g_enum_register_static ("GstClientStatus", client_status);
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}
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return client_status_type;
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}
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static void gst_multi_fd_sink_finalize (GObject * object);
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static void gst_multi_fd_sink_remove_client_link (GstMultiFdSink * sink,
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GList * link);
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static GstFlowReturn gst_multi_fd_sink_render (GstBaseSink * bsink,
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GstBuffer * buf);
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static GstStateChangeReturn gst_multi_fd_sink_change_state (GstElement *
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element, GstStateChange transition);
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static void gst_multi_fd_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_fd_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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GST_BOILERPLATE (GstMultiFdSink, gst_multi_fd_sink, GstBaseSink,
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GST_TYPE_BASE_SINK);
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static guint gst_multi_fd_sink_signals[LAST_SIGNAL] = { 0 };
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static void
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gst_multi_fd_sink_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details (element_class, &gst_multi_fd_sink_details);
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}
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static void
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gst_multi_fd_sink_class_init (GstMultiFdSinkClass * 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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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesink_class = (GstBaseSinkClass *) klass;
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gobject_class->set_property = gst_multi_fd_sink_set_property;
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gobject_class->get_property = gst_multi_fd_sink_get_property;
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gobject_class->finalize = gst_multi_fd_sink_finalize;
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g_object_class_install_property (gobject_class, PROP_PROTOCOL,
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g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in",
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GST_TYPE_TCP_PROTOCOL, DEFAULT_PROTOCOL, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_MODE,
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g_param_spec_enum ("mode", "Mode",
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"The mode for selecting activity on the fds", GST_TYPE_FDSET_MODE,
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DEFAULT_MODE, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_BUFFERS_MAX,
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g_param_spec_int ("buffers-max", "Buffers max",
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"max number of buffers to queue for a client (-1 = no limit)", -1,
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G_MAXINT, DEFAULT_BUFFERS_MAX, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_BUFFERS_SOFT_MAX, g_param_spec_int ("buffers-soft-max",
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"Buffers soft max",
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"Recover client when going over this limit (-1 = no limit)", -1,
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G_MAXINT, DEFAULT_BUFFERS_SOFT_MAX, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_BYTES_MIN,
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g_param_spec_int ("bytes-min", "Bytes min",
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"min number of bytes to queue (-1 = as little as possible)", -1,
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G_MAXINT, DEFAULT_BYTES_MIN, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_TIME_MIN,
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g_param_spec_int64 ("time-min", "Time min",
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"min number of time to queue (-1 = as little as possible)", -1,
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G_MAXINT64, DEFAULT_TIME_MIN, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_BUFFERS_MIN,
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g_param_spec_int ("buffers-min", "Buffers min",
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"min number of buffers to queue (-1 = as few as possible)", -1,
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G_MAXINT, DEFAULT_BUFFERS_MIN, G_PARAM_READWRITE));
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#if NOT_IMPLEMENTED
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g_object_class_install_property (gobject_class, PROP_UNIT_TYPE,
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g_param_spec_enum ("unit-type", "Units type",
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"The unit to measure the max/soft-max/queued properties",
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GST_TYPE_UNIT_TYPE, DEFAULT_UNIT_TYPE, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_UNITS_MAX,
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g_param_spec_int ("units-max", "Units max",
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"max number of units to queue (-1 = no limit)", -1, G_MAXINT,
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DEFAULT_UNITS_MAX, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_UNITS_SOFT_MAX,
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g_param_spec_int ("units-soft-max", "Units soft max",
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"Recover client when going over this limit (-1 = no limit)", -1,
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G_MAXINT, DEFAULT_UNITS_SOFT_MAX, G_PARAM_READWRITE));
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#endif
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g_object_class_install_property (gobject_class, PROP_BUFFERS_QUEUED,
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g_param_spec_uint ("buffers-queued", "Buffers queued",
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"Number of buffers currently queued", 0, G_MAXUINT, 0,
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G_PARAM_READABLE));
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#if NOT_IMPLEMENTED
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g_object_class_install_property (gobject_class, PROP_BYTES_QUEUED,
|
|
g_param_spec_uint ("bytes-queued", "Bytes queued",
|
|
"Number of bytes currently queued", 0, G_MAXUINT, 0,
|
|
G_PARAM_READABLE));
|
|
g_object_class_install_property (gobject_class, PROP_TIME_QUEUED,
|
|
g_param_spec_uint64 ("time-queued", "Time queued",
|
|
"Number of time currently queued", 0, G_MAXUINT64, 0,
|
|
G_PARAM_READABLE));
|
|
#endif
|
|
|
|
g_object_class_install_property (gobject_class, PROP_RECOVER_POLICY,
|
|
g_param_spec_enum ("recover-policy", "Recover Policy",
|
|
"How to recover when client reaches the soft max",
|
|
GST_TYPE_RECOVER_POLICY, DEFAULT_RECOVER_POLICY, G_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class, PROP_TIMEOUT,
|
|
g_param_spec_uint64 ("timeout", "Timeout",
|
|
"Maximum inactivity timeout in nanoseconds for a client (0 = no limit)",
|
|
0, G_MAXUINT64, DEFAULT_TIMEOUT, G_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class, PROP_SYNC_METHOD,
|
|
g_param_spec_enum ("sync-method", "Sync Method",
|
|
"How to sync new clients to the stream",
|
|
GST_TYPE_SYNC_METHOD, DEFAULT_SYNC_METHOD, G_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class, PROP_BYTES_TO_SERVE,
|
|
g_param_spec_uint64 ("bytes-to-serve", "Bytes to serve",
|
|
"Number of bytes received to serve to clients", 0, G_MAXUINT64, 0,
|
|
G_PARAM_READABLE));
|
|
g_object_class_install_property (gobject_class, PROP_BYTES_SERVED,
|
|
g_param_spec_uint64 ("bytes-served", "Bytes served",
|
|
"Total number of bytes send to all clients", 0, G_MAXUINT64, 0,
|
|
G_PARAM_READABLE));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_BURST_UNIT,
|
|
g_param_spec_enum ("burst-unit", "Burst unit",
|
|
"The format of the burst units (when sync-method is burst[[-with]-keyframe])",
|
|
GST_TYPE_UNIT_TYPE, DEFAULT_BURST_UNIT, G_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class, PROP_BURST_VALUE,
|
|
g_param_spec_uint64 ("burst-value", "Burst value",
|
|
"The amount of burst expressed in burst-unit",
|
|
0, G_MAXUINT64, DEFAULT_BURST_VALUE, G_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GstMultiFdSink::add:
|
|
* @gstmultifdsink: the multifdsink element to emit this signal on
|
|
* @fd: the file descriptor to add to multifdsink
|
|
*
|
|
* Hand the given open file descriptor to multifdsink to write to.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_ADD] =
|
|
g_signal_new ("add", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstMultiFdSinkClass, add),
|
|
NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
|
|
/**
|
|
* GstMultiFdSink::add-full:
|
|
* @gstmultifdsink: the multifdsink element to emit this signal on
|
|
* @fd: the file descriptor to add to multifdsink
|
|
* @keyframe: start bursting from a keyframe
|
|
* @unit_type_min: the unit-type of @value_min
|
|
* @value_min: the minimum amount of data to burst expressed in
|
|
* @unit_type_min units.
|
|
* @unit_type_max: the unit-type of @value_max
|
|
* @value_max: the maximum amount of data to burst expressed in
|
|
* @unit_type_max units.
|
|
*
|
|
* Hand the given open file descriptor to multifdsink to write to and
|
|
* specify the burst parameters for the new connection.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_ADD_BURST] =
|
|
g_signal_new ("add-full", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstMultiFdSinkClass, add_full),
|
|
NULL, NULL, gst_tcp_marshal_VOID__INT_BOOLEAN_INT_UINT64_INT_UINT64,
|
|
G_TYPE_NONE, 6, G_TYPE_INT, G_TYPE_BOOLEAN, GST_TYPE_UNIT_TYPE,
|
|
G_TYPE_UINT64, GST_TYPE_UNIT_TYPE, G_TYPE_UINT64);
|
|
/**
|
|
* GstMultiFdSink::remove:
|
|
* @gstmultifdsink: the multifdsink element to emit this signal on
|
|
* @fd: the file descriptor to remove from multifdsink
|
|
*
|
|
* Remove the given open file descriptor from multifdsink.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_REMOVE] =
|
|
g_signal_new ("remove", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstMultiFdSinkClass, remove),
|
|
NULL, NULL, gst_tcp_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
|
|
/**
|
|
* GstMultiFdSink::clear:
|
|
* @gstmultifdsink: the multifdsink element to emit this signal on
|
|
*
|
|
* Remove all file descriptors from multifdsink. Since multifdsink did not
|
|
* open fd's itself, it does not explicitly close the fd. The application
|
|
* should do so by connecting to the client-fd-removed callback.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_CLEAR] =
|
|
g_signal_new ("clear", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstMultiFdSinkClass, clear),
|
|
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
|
|
|
|
/**
|
|
* GstMultiFdSink::get-stats:
|
|
* @gstmultifdsink: the multifdsink element to emit this signal on
|
|
* @fd: the file descriptor to get stats of from multifdsink
|
|
*
|
|
* Get statistics about @fd. This function returns a GValueArray to ease
|
|
* automatic wrapping for bindings.
|
|
*
|
|
* Returns: a GValueArray with the statistics. The array contains 5 guint64
|
|
* values that represent respectively total number of bytes sent, time
|
|
* when the client was added, time when the client was disconnected/removed,
|
|
* time the client is/was active, last activity time. All times are
|
|
* expressed in nanoseconds (GstClockTime).
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_GET_STATS] =
|
|
g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstMultiFdSinkClass, get_stats),
|
|
NULL, NULL, gst_tcp_marshal_BOXED__INT, G_TYPE_VALUE_ARRAY, 1,
|
|
G_TYPE_INT);
|
|
|
|
/**
|
|
* GstMultiFdSink::client-added:
|
|
* @gstmultifdsink: the multifdsink element that emitted this signal
|
|
* @fd: the file descriptor that was added to multifdsink
|
|
*
|
|
* The given file descriptor was added to multifdsink. This signal will
|
|
* be emitted from the streaming thread so application should be prepared
|
|
* for that.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_ADDED] =
|
|
g_signal_new ("client-added", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass, client_added),
|
|
NULL, NULL, gst_tcp_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
|
|
/**
|
|
* GstMultiFdSink::client-removed:
|
|
* @gstmultifdsink: the multifdsink element that emitted this signal
|
|
* @fd: the file descriptor that is to be removed from multifdsink
|
|
* @status: the reason why the client was removed
|
|
*
|
|
* The given file descriptor is about to be removed from multifdsink. This
|
|
* signal will be emitted from the streaming thread so applications should
|
|
* be prepared for that.
|
|
*
|
|
* @gstmultifdsink still holds a handle to @fd so it is possible to call
|
|
* the get-stats signal from this callback. For the same reason it is
|
|
* not safe to close() and reuse @fd in this callback.
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED] =
|
|
g_signal_new ("client-removed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass,
|
|
client_removed), NULL, NULL, gst_tcp_marshal_VOID__INT_BOXED,
|
|
G_TYPE_NONE, 2, G_TYPE_INT, GST_TYPE_CLIENT_STATUS);
|
|
/**
|
|
* GstMultiFdSink::client-fd-removed:
|
|
* @gstmultifdsink: the multifdsink element that emitted this signal
|
|
* @fd: the file descriptor that was removed from multifdsink
|
|
*
|
|
* The given file descriptor was removed from multifdsink. This signal will
|
|
* be emitted from the streaming thread so applications should be prepared
|
|
* for that.
|
|
*
|
|
* In this callback, @gstmultifdsink has removed all the information
|
|
* associated with @fd and it is therefore not possible to call get-stats
|
|
* with @fd. It is however safe to close() and reuse @fd in the callback.
|
|
*
|
|
* Since: 0.10.7
|
|
*/
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_FD_REMOVED] =
|
|
g_signal_new ("client-fd-removed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass,
|
|
client_fd_removed), NULL, NULL, gst_tcp_marshal_VOID__INT,
|
|
G_TYPE_NONE, 1, G_TYPE_INT);
|
|
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_multi_fd_sink_change_state);
|
|
|
|
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_render);
|
|
|
|
klass->add = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_add);
|
|
klass->add_full = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_add_full);
|
|
klass->remove = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_remove);
|
|
klass->clear = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_clear);
|
|
klass->get_stats = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_get_stats);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (multifdsink_debug, "multifdsink", 0, "FD sink");
|
|
}
|
|
|
|
static void
|
|
gst_multi_fd_sink_init (GstMultiFdSink * this, GstMultiFdSinkClass * klass)
|
|
{
|
|
GST_OBJECT_FLAG_UNSET (this, GST_MULTI_FD_SINK_OPEN);
|
|
|
|
this->protocol = DEFAULT_PROTOCOL;
|
|
this->mode = DEFAULT_MODE;
|
|
|
|
CLIENTS_LOCK_INIT (this);
|
|
this->clients = NULL;
|
|
this->fd_hash = g_hash_table_new (g_int_hash, g_int_equal);
|
|
|
|
this->bufqueue = g_array_new (FALSE, TRUE, sizeof (GstBuffer *));
|
|
this->unit_type = DEFAULT_UNIT_TYPE;
|
|
this->units_max = DEFAULT_UNITS_MAX;
|
|
this->units_soft_max = DEFAULT_UNITS_SOFT_MAX;
|
|
this->time_min = DEFAULT_TIME_MIN;
|
|
this->bytes_min = DEFAULT_BYTES_MIN;
|
|
this->buffers_min = DEFAULT_BUFFERS_MIN;
|
|
this->recover_policy = DEFAULT_RECOVER_POLICY;
|
|
|
|
this->timeout = DEFAULT_TIMEOUT;
|
|
this->def_sync_method = DEFAULT_SYNC_METHOD;
|
|
this->def_burst_unit = DEFAULT_BURST_UNIT;
|
|
this->def_burst_value = DEFAULT_BURST_VALUE;
|
|
|
|
this->header_flags = 0;
|
|
}
|
|
|
|
static void
|
|
gst_multi_fd_sink_finalize (GObject * object)
|
|
{
|
|
GstMultiFdSink *this;
|
|
|
|
this = GST_MULTI_FD_SINK (object);
|
|
|
|
CLIENTS_LOCK_FREE (this);
|
|
g_hash_table_destroy (this->fd_hash);
|
|
g_array_free (this->bufqueue, TRUE);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
/* "add-full" signal implementation */
|
|
void
|
|
gst_multi_fd_sink_add_full (GstMultiFdSink * sink, int fd,
|
|
GstSyncMethod sync_method, GstUnitType min_unit, guint64 min_value,
|
|
GstUnitType max_unit, guint64 max_value)
|
|
{
|
|
GstTCPClient *client;
|
|
GList *clink;
|
|
GTimeVal now;
|
|
gint flags, res;
|
|
struct stat statbuf;
|
|
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] adding client, sync_method %d, "
|
|
"min_unit %d, min_value %" G_GUINT64_FORMAT
|
|
", max_unit %d, max_value %" G_GUINT64_FORMAT, fd, sync_method,
|
|
min_unit, min_value, max_unit, max_value);
|
|
|
|
/* do limits check if we can */
|
|
if (min_unit == max_unit) {
|
|
if (max_value != -1 && min_value != -1 && max_value < min_value)
|
|
goto wrong_limits;
|
|
}
|
|
|
|
/* create client datastructure */
|
|
client = g_new0 (GstTCPClient, 1);
|
|
client->fd.fd = fd;
|
|
client->status = GST_CLIENT_STATUS_OK;
|
|
client->bufpos = -1;
|
|
client->bufoffset = 0;
|
|
client->sending = NULL;
|
|
client->bytes_sent = 0;
|
|
client->dropped_buffers = 0;
|
|
client->avg_queue_size = 0;
|
|
client->new_connection = TRUE;
|
|
client->burst_min_unit = min_unit;
|
|
client->burst_min_value = min_value;
|
|
client->burst_max_unit = max_unit;
|
|
client->burst_max_value = max_value;
|
|
client->sync_method = sync_method;
|
|
|
|
/* update start time */
|
|
g_get_current_time (&now);
|
|
client->connect_time = GST_TIMEVAL_TO_TIME (now);
|
|
client->disconnect_time = 0;
|
|
/* set last activity time to connect time */
|
|
client->last_activity_time = client->connect_time;
|
|
|
|
CLIENTS_LOCK (sink);
|
|
|
|
/* check the hash to find a duplicate fd */
|
|
clink = g_hash_table_lookup (sink->fd_hash, &client->fd.fd);
|
|
if (clink != NULL)
|
|
goto duplicate;
|
|
|
|
/* we can add the fd now */
|
|
clink = sink->clients = g_list_prepend (sink->clients, client);
|
|
g_hash_table_insert (sink->fd_hash, &client->fd.fd, clink);
|
|
|
|
/* set the socket to non blocking */
|
|
res = fcntl (fd, F_SETFL, O_NONBLOCK);
|
|
/* we always read from a client */
|
|
gst_fdset_add_fd (sink->fdset, &client->fd);
|
|
|
|
/* we don't try to read from write only fds */
|
|
flags = fcntl (fd, F_GETFL, 0);
|
|
if ((flags & O_ACCMODE) != O_WRONLY) {
|
|
gst_fdset_fd_ctl_read (sink->fdset, &client->fd, TRUE);
|
|
}
|
|
/* figure out the mode, can't use send() for non sockets */
|
|
res = fstat (fd, &statbuf);
|
|
if (S_ISSOCK (statbuf.st_mode)) {
|
|
client->is_socket = TRUE;
|
|
}
|
|
|
|
SEND_COMMAND (sink, CONTROL_RESTART);
|
|
|
|
CLIENTS_UNLOCK (sink);
|
|
|
|
g_signal_emit (G_OBJECT (sink),
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_ADDED], 0, fd);
|
|
|
|
return;
|
|
|
|
/* errors */
|
|
wrong_limits:
|
|
{
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] wrong values min =%" G_GUINT64_FORMAT ", max=%"
|
|
G_GUINT64_FORMAT ", unit %d specified when adding client", fd,
|
|
min_value, max_value, min_unit);
|
|
return;
|
|
}
|
|
duplicate:
|
|
{
|
|
client->status = GST_CLIENT_STATUS_DUPLICATE;
|
|
CLIENTS_UNLOCK (sink);
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] duplicate client found, refusing", fd);
|
|
g_signal_emit (G_OBJECT (sink),
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED], 0, fd,
|
|
client->status);
|
|
g_free (client);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* "add" signal implemntation */
|
|
void
|
|
gst_multi_fd_sink_add (GstMultiFdSink * sink, int fd)
|
|
{
|
|
gst_multi_fd_sink_add_full (sink, fd, sink->def_sync_method,
|
|
sink->def_burst_unit, sink->def_burst_value, sink->def_burst_unit, -1);
|
|
}
|
|
|
|
/* "remove" signal implemntation */
|
|
void
|
|
gst_multi_fd_sink_remove (GstMultiFdSink * sink, int fd)
|
|
{
|
|
GList *clink;
|
|
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] removing client", fd);
|
|
|
|
CLIENTS_LOCK (sink);
|
|
clink = g_hash_table_lookup (sink->fd_hash, &fd);
|
|
if (clink != NULL) {
|
|
GstTCPClient *client = (GstTCPClient *) clink->data;
|
|
|
|
client->status = GST_CLIENT_STATUS_REMOVED;
|
|
gst_multi_fd_sink_remove_client_link (sink, clink);
|
|
SEND_COMMAND (sink, CONTROL_RESTART);
|
|
} else {
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] no client with this fd found!", fd);
|
|
}
|
|
CLIENTS_UNLOCK (sink);
|
|
}
|
|
|
|
/* can be called both through the signal (ie from any thread) or when stopping,
|
|
* after the writing thread has shut down */
|
|
void
|
|
gst_multi_fd_sink_clear (GstMultiFdSink * sink)
|
|
{
|
|
GList *clients, *next;
|
|
|
|
GST_DEBUG_OBJECT (sink, "clearing all clients");
|
|
|
|
CLIENTS_LOCK (sink);
|
|
for (clients = sink->clients; clients; clients = next) {
|
|
GstTCPClient *client;
|
|
|
|
client = (GstTCPClient *) clients->data;
|
|
next = g_list_next (clients);
|
|
|
|
client->status = GST_CLIENT_STATUS_REMOVED;
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
}
|
|
SEND_COMMAND (sink, CONTROL_RESTART);
|
|
CLIENTS_UNLOCK (sink);
|
|
}
|
|
|
|
/* "get-stats" signal implemntation
|
|
* the array returned contains:
|
|
*
|
|
* guint64 : bytes_sent
|
|
* guint64 : connect time (in nanoseconds)
|
|
* guint64 : disconnect time (in nanoseconds)
|
|
* guint64 : time the client is/was connected (in nanoseconds)
|
|
* guint64 : last activity time (in nanoseconds)
|
|
*/
|
|
GValueArray *
|
|
gst_multi_fd_sink_get_stats (GstMultiFdSink * sink, int fd)
|
|
{
|
|
GstTCPClient *client;
|
|
GValueArray *result = NULL;
|
|
GList *clink;
|
|
|
|
CLIENTS_LOCK (sink);
|
|
clink = g_hash_table_lookup (sink->fd_hash, &fd);
|
|
client = (GstTCPClient *) clink->data;
|
|
if (client != NULL) {
|
|
GValue value = { 0 };
|
|
guint64 interval;
|
|
|
|
result = g_value_array_new (5);
|
|
|
|
g_value_init (&value, G_TYPE_UINT64);
|
|
g_value_set_uint64 (&value, client->bytes_sent);
|
|
result = g_value_array_append (result, &value);
|
|
g_value_unset (&value);
|
|
g_value_init (&value, G_TYPE_UINT64);
|
|
g_value_set_uint64 (&value, client->connect_time);
|
|
result = g_value_array_append (result, &value);
|
|
g_value_unset (&value);
|
|
if (client->disconnect_time == 0) {
|
|
GTimeVal nowtv;
|
|
|
|
g_get_current_time (&nowtv);
|
|
|
|
interval = GST_TIMEVAL_TO_TIME (nowtv) - client->connect_time;
|
|
} else {
|
|
interval = client->disconnect_time - client->connect_time;
|
|
}
|
|
g_value_init (&value, G_TYPE_UINT64);
|
|
g_value_set_uint64 (&value, client->disconnect_time);
|
|
result = g_value_array_append (result, &value);
|
|
g_value_unset (&value);
|
|
g_value_init (&value, G_TYPE_UINT64);
|
|
g_value_set_uint64 (&value, interval);
|
|
result = g_value_array_append (result, &value);
|
|
g_value_unset (&value);
|
|
g_value_init (&value, G_TYPE_UINT64);
|
|
g_value_set_uint64 (&value, client->last_activity_time);
|
|
result = g_value_array_append (result, &value);
|
|
}
|
|
CLIENTS_UNLOCK (sink);
|
|
|
|
/* python doesn't like a NULL pointer yet */
|
|
if (result == NULL) {
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] no client with this found!", fd);
|
|
result = g_value_array_new (0);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* should be called with the clientslock helt.
|
|
* Note that we don't close the fd as we didn't open it in the first
|
|
* place. An application should connect to the client-removed signal and
|
|
* close the fd itself.
|
|
*/
|
|
static void
|
|
gst_multi_fd_sink_remove_client_link (GstMultiFdSink * sink, GList * link)
|
|
{
|
|
int fd;
|
|
GTimeVal now;
|
|
GstTCPClient *client = (GstTCPClient *) link->data;
|
|
GstMultiFdSinkClass *fclass;
|
|
|
|
fclass = GST_MULTI_FD_SINK_GET_CLASS (sink);
|
|
|
|
fd = client->fd.fd;
|
|
|
|
/* FIXME: if we keep track of ip we can log it here and signal */
|
|
switch (client->status) {
|
|
case GST_CLIENT_STATUS_OK:
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] removing client %p for no reason",
|
|
fd, client);
|
|
break;
|
|
case GST_CLIENT_STATUS_CLOSED:
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] removing client %p because of close",
|
|
fd, client);
|
|
break;
|
|
case GST_CLIENT_STATUS_REMOVED:
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] removing client %p because the app removed it", fd, client);
|
|
break;
|
|
case GST_CLIENT_STATUS_SLOW:
|
|
GST_INFO_OBJECT (sink,
|
|
"[fd %5d] removing client %p because it was too slow", fd, client);
|
|
break;
|
|
case GST_CLIENT_STATUS_ERROR:
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] removing client %p because of error", fd, client);
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] removing client %p with invalid reason", fd, client);
|
|
break;
|
|
}
|
|
|
|
gst_fdset_remove_fd (sink->fdset, &client->fd);
|
|
|
|
g_get_current_time (&now);
|
|
client->disconnect_time = GST_TIMEVAL_TO_TIME (now);
|
|
|
|
/* free client buffers */
|
|
g_slist_foreach (client->sending, (GFunc) gst_mini_object_unref, NULL);
|
|
g_slist_free (client->sending);
|
|
client->sending = NULL;
|
|
|
|
if (client->caps)
|
|
gst_caps_unref (client->caps);
|
|
client->caps = NULL;
|
|
|
|
/* unlock the mutex before signaling because the signal handler
|
|
* might query some properties */
|
|
CLIENTS_UNLOCK (sink);
|
|
|
|
g_signal_emit (G_OBJECT (sink),
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED], 0, fd, client->status);
|
|
|
|
/* lock again before we remove the client completely */
|
|
CLIENTS_LOCK (sink);
|
|
|
|
/* fd cannot be reused in the above signal callback so we can safely
|
|
* remove it from the hashtable here */
|
|
if (!g_hash_table_remove (sink->fd_hash, &client->fd.fd)) {
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] error removing client %p from hash", client->fd.fd, client);
|
|
}
|
|
/* after releasing the lock above, the link could be invalid, more
|
|
* precisely, the next and prev pointers could point to invalid list
|
|
* links. One optimisation could be to add a cookie to the linked list
|
|
* and take a shortcut when it did not change between unlocking and locking
|
|
* our mutex. For now we just walk the list again. */
|
|
sink->clients = g_list_remove (sink->clients, client);
|
|
|
|
if (fclass->removed)
|
|
fclass->removed (sink, client->fd.fd);
|
|
|
|
g_free (client);
|
|
CLIENTS_UNLOCK (sink);
|
|
|
|
/* and the fd is really gone now */
|
|
g_signal_emit (G_OBJECT (sink),
|
|
gst_multi_fd_sink_signals[SIGNAL_CLIENT_FD_REMOVED], 0, fd);
|
|
|
|
CLIENTS_LOCK (sink);
|
|
}
|
|
|
|
/* handle a read on a client fd,
|
|
* which either indicates a close or should be ignored
|
|
* returns FALSE if some error occured or the client closed. */
|
|
static gboolean
|
|
gst_multi_fd_sink_handle_client_read (GstMultiFdSink * sink,
|
|
GstTCPClient * client)
|
|
{
|
|
int avail, fd;
|
|
gboolean ret;
|
|
|
|
fd = client->fd.fd;
|
|
|
|
if (ioctl (fd, FIONREAD, &avail) < 0)
|
|
goto ioctl_failed;
|
|
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] select reports client read of %d bytes",
|
|
fd, avail);
|
|
|
|
ret = TRUE;
|
|
|
|
if (avail == 0) {
|
|
/* client sent close, so remove it */
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] client asked for close, removing", fd);
|
|
client->status = GST_CLIENT_STATUS_CLOSED;
|
|
ret = FALSE;
|
|
} else if (avail < 0) {
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] avail < 0, removing", fd);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
ret = FALSE;
|
|
} else {
|
|
guint8 dummy[512];
|
|
gint nread;
|
|
|
|
/* 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 {
|
|
/* this is the maximum we can read */
|
|
gint to_read = MIN (avail, 512);
|
|
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] client wants us to read %d bytes",
|
|
fd, to_read);
|
|
|
|
nread = read (fd, dummy, to_read);
|
|
if (nread < -1) {
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] could not read %d bytes: %s (%d)",
|
|
fd, to_read, g_strerror (errno), errno);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
ret = FALSE;
|
|
break;
|
|
} else if (nread == 0) {
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] 0 bytes in read, removing", fd);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
avail -= nread;
|
|
}
|
|
while (avail > 0);
|
|
}
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
ioctl_failed:
|
|
{
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] ioctl failed: %s (%d)",
|
|
fd, g_strerror (errno), errno);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Queue raw data for this client, creating a new buffer.
|
|
* This takes ownership of the data by
|
|
* setting it as GST_BUFFER_MALLOCDATA() on the created buffer so
|
|
* be sure to pass g_free()-able @data.
|
|
*/
|
|
static gboolean
|
|
gst_multi_fd_sink_client_queue_data (GstMultiFdSink * sink,
|
|
GstTCPClient * client, gchar * data, gint len)
|
|
{
|
|
GstBuffer *buf;
|
|
|
|
buf = gst_buffer_new ();
|
|
GST_BUFFER_DATA (buf) = (guint8 *) data;
|
|
GST_BUFFER_MALLOCDATA (buf) = (guint8 *) data;
|
|
GST_BUFFER_SIZE (buf) = len;
|
|
|
|
GST_LOG_OBJECT (sink, "[fd %5d] queueing data of length %d",
|
|
client->fd.fd, len);
|
|
|
|
client->sending = g_slist_append (client->sending, buf);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* GDP-encode given caps and queue them for sending */
|
|
static gboolean
|
|
gst_multi_fd_sink_client_queue_caps (GstMultiFdSink * sink,
|
|
GstTCPClient * client, const GstCaps * caps)
|
|
{
|
|
guint8 *header;
|
|
guint8 *payload;
|
|
guint length;
|
|
gchar *string;
|
|
|
|
g_return_val_if_fail (caps != NULL, FALSE);
|
|
|
|
string = gst_caps_to_string (caps);
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] Queueing caps %s through GDP",
|
|
client->fd.fd, string);
|
|
g_free (string);
|
|
|
|
if (!gst_dp_packet_from_caps (caps, sink->header_flags, &length, &header,
|
|
&payload)) {
|
|
GST_DEBUG_OBJECT (sink, "Could not create GDP packet from caps");
|
|
return FALSE;
|
|
}
|
|
gst_multi_fd_sink_client_queue_data (sink, client, (gchar *) header, length);
|
|
|
|
length = gst_dp_header_payload_length (header);
|
|
gst_multi_fd_sink_client_queue_data (sink, client, (gchar *) payload, length);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
is_sync_frame (GstMultiFdSink * sink, GstBuffer * buffer)
|
|
{
|
|
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)) {
|
|
return FALSE;
|
|
} else if (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_IN_CAPS)) {
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* queue the given buffer for the given client, possibly adding the GDP
|
|
* header if GDP is being used */
|
|
static gboolean
|
|
gst_multi_fd_sink_client_queue_buffer (GstMultiFdSink * sink,
|
|
GstTCPClient * client, GstBuffer * buffer)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
/* TRUE: send them if the new caps have them */
|
|
gboolean send_streamheader = FALSE;
|
|
GstStructure *s;
|
|
|
|
/* before we queue the buffer, we check if we need to queue streamheader
|
|
* buffers (because it's a new client, or because they changed) */
|
|
caps = gst_buffer_get_caps (buffer); /* cleaned up after streamheader */
|
|
if (!client->caps) {
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] no previous caps for this client, send streamheader",
|
|
client->fd.fd);
|
|
send_streamheader = TRUE;
|
|
client->caps = gst_caps_ref (caps);
|
|
} else {
|
|
/* there were previous caps recorded, so compare */
|
|
if (!gst_caps_is_equal (caps, client->caps)) {
|
|
const GValue *sh1, *sh2;
|
|
|
|
/* caps are not equal, but could still have the same streamheader */
|
|
s = gst_caps_get_structure (caps, 0);
|
|
if (!gst_structure_has_field (s, "streamheader")) {
|
|
/* no new streamheader, so nothing new to send */
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] new caps do not have streamheader, not sending",
|
|
client->fd.fd);
|
|
} else {
|
|
/* there is a new streamheader */
|
|
s = gst_caps_get_structure (client->caps, 0);
|
|
if (!gst_structure_has_field (s, "streamheader")) {
|
|
/* no previous streamheader, so send the new one */
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] previous caps did not have streamheader, sending",
|
|
client->fd.fd);
|
|
send_streamheader = TRUE;
|
|
} else {
|
|
/* both old and new caps have streamheader set */
|
|
sh1 = gst_structure_get_value (s, "streamheader");
|
|
s = gst_caps_get_structure (caps, 0);
|
|
sh2 = gst_structure_get_value (s, "streamheader");
|
|
if (gst_value_compare (sh1, sh2) != GST_VALUE_EQUAL) {
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] new streamheader different from old, sending",
|
|
client->fd.fd);
|
|
send_streamheader = TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (send_streamheader)) {
|
|
const GValue *sh;
|
|
GArray *buffers;
|
|
int i;
|
|
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] sending streamheader from caps %" GST_PTR_FORMAT,
|
|
client->fd.fd, caps);
|
|
s = gst_caps_get_structure (caps, 0);
|
|
if (!gst_structure_has_field (s, "streamheader")) {
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] no new streamheader, so nothing to send", client->fd.fd);
|
|
} else {
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] sending streamheader from caps %" GST_PTR_FORMAT,
|
|
client->fd.fd, caps);
|
|
sh = gst_structure_get_value (s, "streamheader");
|
|
g_assert (G_VALUE_TYPE (sh) == GST_TYPE_ARRAY);
|
|
buffers = g_value_peek_pointer (sh);
|
|
for (i = 0; i < buffers->len; ++i) {
|
|
GValue *bufval;
|
|
GstBuffer *buffer;
|
|
|
|
bufval = &g_array_index (buffers, GValue, i);
|
|
g_assert (G_VALUE_TYPE (bufval) == GST_TYPE_BUFFER);
|
|
buffer = g_value_peek_pointer (bufval);
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] queueing streamheader buffer of length %d",
|
|
client->fd.fd, GST_BUFFER_SIZE (buffer));
|
|
gst_buffer_ref (buffer);
|
|
|
|
if (sink->protocol == GST_TCP_PROTOCOL_GDP) {
|
|
guint8 *header;
|
|
guint len;
|
|
|
|
if (!gst_dp_header_from_buffer (buffer, sink->header_flags, &len,
|
|
&header)) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] could not create header, removing client",
|
|
client->fd.fd);
|
|
return FALSE;
|
|
}
|
|
gst_multi_fd_sink_client_queue_data (sink, client, (gchar *) header,
|
|
len);
|
|
}
|
|
|
|
client->sending = g_slist_append (client->sending, buffer);
|
|
}
|
|
}
|
|
}
|
|
|
|
gst_caps_unref (caps);
|
|
caps = NULL;
|
|
/* now we can send the buffer, possibly sending a GDP header first */
|
|
if (sink->protocol == GST_TCP_PROTOCOL_GDP) {
|
|
guint8 *header;
|
|
guint len;
|
|
|
|
if (!gst_dp_header_from_buffer (buffer, sink->header_flags, &len, &header)) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] could not create header, removing client", client->fd.fd);
|
|
return FALSE;
|
|
}
|
|
gst_multi_fd_sink_client_queue_data (sink, client, (gchar *) header, len);
|
|
}
|
|
|
|
GST_LOG_OBJECT (sink, "[fd %5d] queueing buffer of length %d",
|
|
client->fd.fd, GST_BUFFER_SIZE (buffer));
|
|
|
|
gst_buffer_ref (buffer);
|
|
client->sending = g_slist_append (client->sending, buffer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* find the keyframe in the list of buffers starting the
|
|
* search from @idx. @direction as -1 will search backwards,
|
|
* 1 will search forwards.
|
|
* Returns: the index or -1 if there is no keyframe after idx.
|
|
*/
|
|
static gint
|
|
find_syncframe (GstMultiFdSink * sink, gint idx, gint direction)
|
|
{
|
|
gint i, len, result;
|
|
|
|
/* take length of queued buffers */
|
|
len = sink->bufqueue->len;
|
|
|
|
/* assume we don't find a keyframe */
|
|
result = -1;
|
|
|
|
/* then loop over all buffers to find the first keyframe */
|
|
for (i = idx; i >= 0 && i < len; i += direction) {
|
|
GstBuffer *buf;
|
|
|
|
buf = g_array_index (sink->bufqueue, GstBuffer *, i);
|
|
if (is_sync_frame (sink, buf)) {
|
|
GST_LOG_OBJECT (sink, "found keyframe at %d from %d, direction %d",
|
|
i, idx, direction);
|
|
result = i;
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#define find_next_syncframe(s,i) find_syncframe(s,i,1)
|
|
#define find_prev_syncframe(s,i) find_syncframe(s,i,-1)
|
|
|
|
/* find the positions in the buffer queue where *_min and *_max
|
|
* is satisfied
|
|
*/
|
|
/* count the amount of data in the buffers and return the index
|
|
* that satifies the given limits.
|
|
*
|
|
* Returns: index @idx in the buffer queue so that the given limits are
|
|
* satisfied. TRUE if all the limits could be satisfied, FALSE if not
|
|
* enough data was in the queue.
|
|
*
|
|
* FIXME, this code might now work if any of the units is in buffers...
|
|
*/
|
|
static gboolean
|
|
find_limits (GstMultiFdSink * sink,
|
|
gint * min_idx, gint bytes_min, gint buffers_min, gint64 time_min,
|
|
gint * max_idx, gint bytes_max, gint buffers_max, gint64 time_max)
|
|
{
|
|
GstClockTime first, time;
|
|
gint i, len, bytes;
|
|
gboolean result, max_hit;
|
|
|
|
/* take length of queue */
|
|
len = sink->bufqueue->len;
|
|
|
|
/* this must hold */
|
|
g_assert (len > 0);
|
|
|
|
GST_LOG_OBJECT (sink,
|
|
"bytes_min %d, buffers_min %d, time_min %" GST_TIME_FORMAT
|
|
", bytes_max %d, buffers_max %d, time_max %" GST_TIME_FORMAT, bytes_min,
|
|
buffers_min, GST_TIME_ARGS (time_min), bytes_max, buffers_max,
|
|
GST_TIME_ARGS (time_max));
|
|
|
|
/* do the trivial buffer limit test */
|
|
if (buffers_min != -1 && len < buffers_min) {
|
|
*min_idx = len - 1;
|
|
*max_idx = len - 1;
|
|
return FALSE;
|
|
}
|
|
|
|
result = FALSE;
|
|
/* else count bytes and time */
|
|
first = -1;
|
|
bytes = 0;
|
|
/* unset limits */
|
|
*min_idx = -1;
|
|
*max_idx = -1;
|
|
max_hit = FALSE;
|
|
|
|
i = 0;
|
|
/* loop through the buffers, when a limit is ok, mark it
|
|
* as -1, we have at least one buffer in the queue. */
|
|
do {
|
|
GstBuffer *buf;
|
|
|
|
/* if we checked all min limits, update result */
|
|
if (bytes_min == -1 && time_min == -1 && *min_idx == -1) {
|
|
/* don't go below 0 */
|
|
*min_idx = MAX (i - 1, 0);
|
|
}
|
|
/* if we reached one max limit break out */
|
|
if (max_hit) {
|
|
/* i > 0 when we get here, we subtract one to get the position
|
|
* of the previous buffer. */
|
|
*max_idx = i - 1;
|
|
/* we have valid complete result if we found a min_idx too */
|
|
result = *min_idx != -1;
|
|
break;
|
|
}
|
|
buf = g_array_index (sink->bufqueue, GstBuffer *, i);
|
|
|
|
bytes += GST_BUFFER_SIZE (buf);
|
|
|
|
/* take timestamp and save for the base first timestamp */
|
|
if ((time = GST_BUFFER_TIMESTAMP (buf)) != -1) {
|
|
if (first == -1)
|
|
first = time;
|
|
|
|
/* increase max usage if we did not fill enough. Note that
|
|
* buffers are sorted from new to old, so the first timestamp is
|
|
* bigger than the next one. */
|
|
if (time_min != -1 && first - time >= time_min)
|
|
time_min = -1;
|
|
if (time_max != -1 && first - time >= time_max)
|
|
max_hit = TRUE;
|
|
}
|
|
/* time is OK or unknown, check and increase if not enough bytes */
|
|
if (bytes_min != -1) {
|
|
if (bytes >= bytes_min)
|
|
bytes_min = -1;
|
|
}
|
|
if (bytes_max != -1) {
|
|
if (bytes >= bytes_max) {
|
|
max_hit = TRUE;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
while (i < len);
|
|
|
|
/* if we did not hit the max or min limit, set to buffer size */
|
|
if (*max_idx == -1)
|
|
*max_idx = len - 1;
|
|
/* make sure min does not exceed max */
|
|
if (*min_idx == -1)
|
|
*min_idx = *max_idx;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* parse the unit/value pair and assign it to the result value of the
|
|
* right type, leave the other values untouched
|
|
*
|
|
* Returns: FALSE if the unit is unknown or undefined. TRUE otherwise.
|
|
*/
|
|
static gboolean
|
|
assign_value (GstUnitType unit, guint64 value, gint * bytes, gint * buffers,
|
|
GstClockTime * time)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
/* set only the limit of the given format to the given value */
|
|
switch (unit) {
|
|
case GST_UNIT_TYPE_BUFFERS:
|
|
*buffers = (gint) value;
|
|
break;
|
|
case GST_UNIT_TYPE_TIME:
|
|
*time = value;
|
|
break;
|
|
case GST_UNIT_TYPE_BYTES:
|
|
*bytes = (gint) value;
|
|
break;
|
|
case GST_UNIT_TYPE_UNDEFINED:
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/* count the index in the buffer queue to satisfy the given unit
|
|
* and value pair starting from buffer at index 0.
|
|
*
|
|
* Returns: TRUE if there was enough data in the queue to satisfy the
|
|
* burst values. @idx contains the index in the buffer that contains enough
|
|
* data to satisfy the limits or the last buffer in the queue when the
|
|
* function returns FALSE.
|
|
*/
|
|
static gboolean
|
|
count_burst_unit (GstMultiFdSink * sink, gint * min_idx, GstUnitType min_unit,
|
|
guint64 min_value, gint * max_idx, GstUnitType max_unit, guint64 max_value)
|
|
{
|
|
gint bytes_min = -1, buffers_min = -1;
|
|
gint bytes_max = -1, buffers_max = -1;
|
|
GstClockTime time_min = -1, time_max = -1;
|
|
|
|
assign_value (min_unit, min_value, &bytes_min, &buffers_min, &time_min);
|
|
assign_value (max_unit, max_value, &bytes_max, &buffers_max, &time_max);
|
|
|
|
return find_limits (sink, min_idx, bytes_min, buffers_min, time_min,
|
|
max_idx, bytes_max, buffers_max, time_max);
|
|
}
|
|
|
|
/* decide where in the current buffer queue this new client should start
|
|
* receiving buffers from.
|
|
* This function is called whenever a client is connected and has not yet
|
|
* received a buffer.
|
|
* If this returns -1, it means that we haven't found a good point to
|
|
* start streaming from yet, and this function should be called again later
|
|
* when more buffers have arrived.
|
|
*/
|
|
static gint
|
|
gst_multi_fd_sink_new_client (GstMultiFdSink * sink, GstTCPClient * client)
|
|
{
|
|
gint result;
|
|
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] new client, deciding where to start in queue", client->fd.fd);
|
|
switch (client->sync_method) {
|
|
case GST_SYNC_METHOD_LATEST:
|
|
/* no syncing, we are happy with whatever the client is going to get */
|
|
result = client->bufpos;
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_LATEST, position %d", client->fd.fd, result);
|
|
break;
|
|
case GST_SYNC_METHOD_NEXT_KEYFRAME:
|
|
{
|
|
/* if one of the new buffers (between client->bufpos and 0) in the queue
|
|
* is a sync point, we can proceed, otherwise we need to keep waiting */
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] new client, bufpos %d, waiting for keyframe", client->fd.fd,
|
|
client->bufpos);
|
|
|
|
result = find_prev_syncframe (sink, client->bufpos);
|
|
if (result != -1) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_NEXT_KEYFRAME: result %d",
|
|
client->fd.fd, result);
|
|
break;
|
|
}
|
|
|
|
/* client is not on a syncbuffer, need to skip these buffers and
|
|
* wait some more */
|
|
GST_LOG_OBJECT (sink,
|
|
"[fd %5d] new client, skipping buffer(s), no syncpoint found",
|
|
client->fd.fd);
|
|
client->bufpos = -1;
|
|
break;
|
|
}
|
|
case GST_SYNC_METHOD_LATEST_KEYFRAME:
|
|
{
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_LATEST_KEYFRAME", client->fd.fd);
|
|
|
|
/* for new clients we initially scan the complete buffer queue for
|
|
* a sync point when a buffer is added. If we don't find a keyframe,
|
|
* we need to wait for the next keyframe and so we change the client's
|
|
* sync method to GST_SYNC_METHOD_NEXT_KEYFRAME.
|
|
*/
|
|
result = find_next_syncframe (sink, 0);
|
|
if (result != -1) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_LATEST_KEYFRAME: result %d", client->fd.fd,
|
|
result);
|
|
break;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_LATEST_KEYFRAME: no keyframe found, "
|
|
"switching to SYNC_METHOD_NEXT_KEYFRAME", client->fd.fd);
|
|
/* throw client to the waiting state */
|
|
client->bufpos = -1;
|
|
/* and make client sync to next keyframe */
|
|
client->sync_method = GST_SYNC_METHOD_NEXT_KEYFRAME;
|
|
break;
|
|
}
|
|
case GST_SYNC_METHOD_BURST:
|
|
{
|
|
gboolean ok;
|
|
gint max;
|
|
|
|
/* move to the position where we satisfy the client's burst
|
|
* parameters. If we could not satisfy the parameters because there
|
|
* is not enough data, we just send what we have (which is in result).
|
|
* We use the max value to limit the search
|
|
*/
|
|
ok = count_burst_unit (sink, &result, client->burst_min_unit,
|
|
client->burst_min_value, &max, client->burst_max_unit,
|
|
client->burst_max_value);
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_BURST: burst_unit returned %d, result %d",
|
|
client->fd.fd, ok, result);
|
|
|
|
GST_LOG_OBJECT (sink, "min %d, max %d", result, max);
|
|
|
|
/* we hit the max and it is below the min, use that then */
|
|
if (max != -1 && max <= result) {
|
|
result = MAX (max - 1, 0);
|
|
GST_DEBUG_OBJECT (sink,
|
|
"[fd %5d] SYNC_METHOD_BURST: result above max, taken down to %d",
|
|
client->fd.fd, result);
|
|
}
|
|
break;
|
|
}
|
|
case GST_SYNC_METHOD_BURST_KEYFRAME:
|
|
{
|
|
gboolean ok;
|
|
gint min_idx, max_idx;
|
|
gint next_syncframe, prev_syncframe;
|
|
|
|
/* BURST_KEYFRAME:
|
|
*
|
|
* _always_ start sending a keyframe to the client. We first search
|
|
* a keyframe between min/max limits. If there is none, we send it the
|
|
* last keyframe before min. If there is none, the behaviour is like
|
|
* NEXT_KEYFRAME.
|
|
*/
|
|
/* gather burst limits */
|
|
ok = count_burst_unit (sink, &min_idx, client->burst_min_unit,
|
|
client->burst_min_value, &max_idx, client->burst_max_unit,
|
|
client->burst_max_value);
|
|
|
|
GST_LOG_OBJECT (sink, "min %d, max %d", min_idx, max_idx);
|
|
|
|
/* first find a keyframe after min_idx */
|
|
next_syncframe = find_next_syncframe (sink, min_idx);
|
|
if (next_syncframe != -1 && next_syncframe < max_idx) {
|
|
/* we have a valid keyframe and it's below the max */
|
|
GST_LOG_OBJECT (sink, "found keyframe in min/max limits");
|
|
result = next_syncframe;
|
|
break;
|
|
}
|
|
|
|
/* no valid keyframe, try to find one below min */
|
|
prev_syncframe = find_prev_syncframe (sink, min_idx);
|
|
if (prev_syncframe != -1) {
|
|
GST_WARNING_OBJECT (sink,
|
|
"using keyframe below min in BURST_KEYFRAME sync mode");
|
|
result = prev_syncframe;
|
|
break;
|
|
}
|
|
|
|
/* no prev keyframe or not enough data */
|
|
GST_WARNING_OBJECT (sink,
|
|
"no prev keyframe found in BURST_KEYFRAME sync mode, waiting for next");
|
|
|
|
/* throw client to the waiting state */
|
|
client->bufpos = -1;
|
|
/* and make client sync to next keyframe */
|
|
client->sync_method = GST_SYNC_METHOD_NEXT_KEYFRAME;
|
|
result = -1;
|
|
break;
|
|
}
|
|
case GST_SYNC_METHOD_BURST_WITH_KEYFRAME:
|
|
{
|
|
gboolean ok;
|
|
gint min_idx, max_idx;
|
|
gint next_syncframe;
|
|
|
|
/* BURST_WITH_KEYFRAME:
|
|
*
|
|
* try to start sending a keyframe to the client. We first search
|
|
* a keyframe between min/max limits. If there is none, we send it the
|
|
* amount of data up 'till min.
|
|
*/
|
|
/* gather enough data to burst */
|
|
ok = count_burst_unit (sink, &min_idx, client->burst_min_unit,
|
|
client->burst_min_value, &max_idx, client->burst_max_unit,
|
|
client->burst_max_value);
|
|
|
|
GST_LOG_OBJECT (sink, "min %d, max %d", min_idx, max_idx);
|
|
|
|
/* first find a keyframe after min_idx */
|
|
next_syncframe = find_next_syncframe (sink, min_idx);
|
|
if (next_syncframe != -1 && next_syncframe < max_idx) {
|
|
/* we have a valid keyframe and it's below the max */
|
|
GST_LOG_OBJECT (sink, "found keyframe in min/max limits");
|
|
result = next_syncframe;
|
|
break;
|
|
}
|
|
|
|
/* no keyframe, send data from min_idx */
|
|
GST_WARNING_OBJECT (sink, "using min in BURST_WITH_KEYFRAME sync mode");
|
|
|
|
/* make sure we don't go over the max limit */
|
|
if (max_idx != -1 && max_idx <= min_idx) {
|
|
result = MAX (max_idx - 1, 0);
|
|
} else {
|
|
result = min_idx;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
g_warning ("unknown sync method %d", client->sync_method);
|
|
result = client->bufpos;
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* 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. In the case of the GDP protocol, we create
|
|
* buffers out of the header bytes so that we can focus only on sending
|
|
* buffers.
|
|
*
|
|
* We first check to see if we need to send caps (in GDP) and 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 client->sending queue and if the queue
|
|
* is empty, it will pick a buffer from the global queue.
|
|
*
|
|
* Sending the buffers from the client->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
|
|
* client->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_fd_sink_handle_client_write (GstMultiFdSink * sink,
|
|
GstTCPClient * client)
|
|
{
|
|
int fd = client->fd.fd;
|
|
gboolean more;
|
|
gboolean res;
|
|
GstClockTime now;
|
|
GTimeVal nowtv;
|
|
|
|
g_get_current_time (&nowtv);
|
|
now = GST_TIMEVAL_TO_TIME (nowtv);
|
|
|
|
/* when using GDP, first check if we have queued caps yet */
|
|
if (sink->protocol == GST_TCP_PROTOCOL_GDP) {
|
|
if (!client->caps_sent) {
|
|
GstPad *peer;
|
|
GstCaps *caps;
|
|
|
|
peer = gst_pad_get_peer (GST_BASE_SINK_PAD (sink));
|
|
if (!peer) {
|
|
GST_WARNING_OBJECT (sink, "pad has no peer");
|
|
return FALSE;
|
|
}
|
|
gst_object_unref (peer);
|
|
|
|
caps = gst_pad_get_negotiated_caps (GST_BASE_SINK_PAD (sink));
|
|
if (!caps) {
|
|
GST_WARNING_OBJECT (sink, "pad caps not yet negotiated");
|
|
return FALSE;
|
|
}
|
|
|
|
/* queue caps for sending */
|
|
res = gst_multi_fd_sink_client_queue_caps (sink, client, caps);
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
if (!res) {
|
|
GST_DEBUG_OBJECT (sink, "Failed queueing caps, removing client");
|
|
return FALSE;
|
|
}
|
|
client->caps_sent = TRUE;
|
|
}
|
|
}
|
|
|
|
more = TRUE;
|
|
do {
|
|
gint maxsize;
|
|
|
|
if (!client->sending) {
|
|
/* client is not working on a buffer */
|
|
if (client->bufpos == -1) {
|
|
/* client is too fast, remove from write queue until new buffer is
|
|
* available */
|
|
gst_fdset_fd_ctl_write (sink->fdset, &client->fd, FALSE);
|
|
return TRUE;
|
|
} else {
|
|
/* client can pick a buffer from the global queue */
|
|
GstBuffer *buf;
|
|
|
|
/* for new connections, we need to find a good spot in the
|
|
* bufqueue to start streaming from */
|
|
if (client->new_connection) {
|
|
gint position = gst_multi_fd_sink_new_client (sink, client);
|
|
|
|
if (position >= 0) {
|
|
/* we got a valid spot in the queue */
|
|
client->new_connection = FALSE;
|
|
client->bufpos = position;
|
|
} else {
|
|
/* cannot send data to this client yet */
|
|
gst_fdset_fd_ctl_write (sink->fdset, &client->fd, FALSE);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* grab buffer */
|
|
buf = g_array_index (sink->bufqueue, GstBuffer *, client->bufpos);
|
|
client->bufpos--;
|
|
GST_LOG_OBJECT (sink, "[fd %5d] client %p at position %d",
|
|
fd, client, client->bufpos);
|
|
|
|
/* queueing a buffer will ref it */
|
|
gst_multi_fd_sink_client_queue_buffer (sink, client, buf);
|
|
|
|
/* need to start from the first byte for this new buffer */
|
|
client->bufoffset = 0;
|
|
}
|
|
}
|
|
|
|
/* see if we need to send something */
|
|
if (client->sending) {
|
|
ssize_t wrote;
|
|
GstBuffer *head;
|
|
|
|
/* pick first buffer from list */
|
|
head = GST_BUFFER (client->sending->data);
|
|
maxsize = GST_BUFFER_SIZE (head) - client->bufoffset;
|
|
|
|
/* try to write the complete buffer */
|
|
#ifdef MSG_NOSIGNAL
|
|
#define FLAGS MSG_NOSIGNAL
|
|
#else
|
|
#define FLAGS 0
|
|
#endif
|
|
if (client->is_socket) {
|
|
wrote =
|
|
send (fd, GST_BUFFER_DATA (head) + client->bufoffset, maxsize,
|
|
FLAGS);
|
|
} else {
|
|
wrote = write (fd, GST_BUFFER_DATA (head) + client->bufoffset, maxsize);
|
|
}
|
|
|
|
if (wrote < 0) {
|
|
/* hmm error.. */
|
|
if (errno == EAGAIN) {
|
|
/* nothing serious, resource was unavailable, try again later */
|
|
more = FALSE;
|
|
} else if (errno == ECONNRESET) {
|
|
goto connection_reset;
|
|
} else {
|
|
goto write_error;
|
|
}
|
|
} else {
|
|
if (wrote < maxsize) {
|
|
/* partial write means that the client cannot read more and we should
|
|
* stop sending more */
|
|
GST_LOG_OBJECT (sink, "partial write on %d of %d bytes", fd, wrote);
|
|
client->bufoffset += wrote;
|
|
more = FALSE;
|
|
} else {
|
|
/* complete buffer was written, we can proceed to the next one */
|
|
client->sending = g_slist_remove (client->sending, head);
|
|
gst_buffer_unref (head);
|
|
/* make sure we start from byte 0 for the next buffer */
|
|
client->bufoffset = 0;
|
|
}
|
|
/* update stats */
|
|
client->bytes_sent += wrote;
|
|
client->last_activity_time = now;
|
|
sink->bytes_served += wrote;
|
|
}
|
|
}
|
|
} while (more);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
connection_reset:
|
|
{
|
|
GST_DEBUG_OBJECT (sink, "[fd %5d] connection reset by peer, removing", fd);
|
|
client->status = GST_CLIENT_STATUS_CLOSED;
|
|
return FALSE;
|
|
}
|
|
write_error:
|
|
{
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] could not write, removing client: %s (%d)", fd,
|
|
g_strerror (errno), errno);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* calculate the new position for a client after recovery. This function
|
|
* does not update the client position but merely returns the required
|
|
* position.
|
|
*/
|
|
static gint
|
|
gst_multi_fd_sink_recover_client (GstMultiFdSink * sink, GstTCPClient * client)
|
|
{
|
|
gint newbufpos;
|
|
|
|
GST_WARNING_OBJECT (sink,
|
|
"[fd %5d] client %p is lagging at %d, recover using policy %d",
|
|
client->fd.fd, client, client->bufpos, sink->recover_policy);
|
|
|
|
switch (sink->recover_policy) {
|
|
case GST_RECOVER_POLICY_NONE:
|
|
/* do nothing, client will catch up or get kicked out when it reaches
|
|
* the hard max */
|
|
newbufpos = client->bufpos;
|
|
break;
|
|
case GST_RECOVER_POLICY_RESYNC_LATEST:
|
|
/* move to beginning of queue */
|
|
newbufpos = -1;
|
|
break;
|
|
case GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT:
|
|
/* move to beginning of soft max */
|
|
newbufpos = sink->units_soft_max;
|
|
break;
|
|
case GST_RECOVER_POLICY_RESYNC_KEYFRAME:
|
|
/* find keyframe in buffers, we search backwards to find the
|
|
* closest keyframe relative to what this client already received. */
|
|
newbufpos = MIN (sink->bufqueue->len - 1, sink->units_soft_max - 1);
|
|
|
|
while (newbufpos >= 0) {
|
|
GstBuffer *buf;
|
|
|
|
buf = g_array_index (sink->bufqueue, GstBuffer *, newbufpos);
|
|
if (is_sync_frame (sink, buf)) {
|
|
/* found a buffer that is not a delta unit */
|
|
break;
|
|
}
|
|
newbufpos--;
|
|
}
|
|
break;
|
|
default:
|
|
/* unknown recovery procedure */
|
|
newbufpos = sink->units_soft_max;
|
|
break;
|
|
}
|
|
return newbufpos;
|
|
}
|
|
|
|
/* Queue a buffer on the global queue.
|
|
*
|
|
* This function adds the buffer to the front of a GArray. It removes the
|
|
* tail buffer if the max queue size is exceeded, unreffing the queued buffer.
|
|
* Note that unreffing the buffer is not a problem as clients who
|
|
* started writing out this buffer will still have a reference to it in the
|
|
* client->sending queue.
|
|
*
|
|
* After adding the buffer, we update all client positions in the queue. If
|
|
* a client moves over the soft max, we start the recovery procedure for this
|
|
* slow client. If it goes over the hard max, it is put into the slow list
|
|
* and removed.
|
|
*
|
|
* Special care is taken of clients that were waiting for a new buffer (they
|
|
* had a position of -1) because they can proceed after adding this new buffer.
|
|
* This is done by adding the client back into the write fd_set and signalling
|
|
* the select thread that the fd_set changed.
|
|
*/
|
|
static void
|
|
gst_multi_fd_sink_queue_buffer (GstMultiFdSink * sink, GstBuffer * buf)
|
|
{
|
|
GList *clients, *next;
|
|
gint queuelen;
|
|
gboolean need_signal = FALSE;
|
|
gint max_buffer_usage;
|
|
gint i;
|
|
GTimeVal nowtv;
|
|
GstClockTime now;
|
|
|
|
g_get_current_time (&nowtv);
|
|
now = GST_TIMEVAL_TO_TIME (nowtv);
|
|
|
|
CLIENTS_LOCK (sink);
|
|
/* add buffer to queue */
|
|
g_array_prepend_val (sink->bufqueue, buf);
|
|
queuelen = sink->bufqueue->len;
|
|
|
|
/* then loop over the clients and update the positions */
|
|
max_buffer_usage = 0;
|
|
for (clients = sink->clients; clients; clients = next) {
|
|
GstTCPClient *client;
|
|
|
|
client = (GstTCPClient *) clients->data;
|
|
next = g_list_next (clients);
|
|
|
|
client->bufpos++;
|
|
GST_LOG_OBJECT (sink, "[fd %5d] client %p at position %d",
|
|
client->fd.fd, client, client->bufpos);
|
|
/* check soft max if needed, recover client */
|
|
if (sink->units_soft_max > 0 && client->bufpos >= sink->units_soft_max) {
|
|
gint newpos;
|
|
|
|
newpos = gst_multi_fd_sink_recover_client (sink, client);
|
|
if (newpos != client->bufpos) {
|
|
client->bufpos = newpos;
|
|
client->discont = TRUE;
|
|
GST_INFO_OBJECT (sink, "[fd %5d] client %p position reset to %d",
|
|
client->fd.fd, client, client->bufpos);
|
|
} else {
|
|
GST_INFO_OBJECT (sink,
|
|
"[fd %5d] client %p not recovering position",
|
|
client->fd.fd, client);
|
|
}
|
|
}
|
|
/* check hard max and timeout, remove client */
|
|
if ((sink->units_max > 0 && client->bufpos >= sink->units_max) ||
|
|
(sink->timeout > 0
|
|
&& now - client->last_activity_time > sink->timeout)) {
|
|
/* remove client */
|
|
GST_WARNING_OBJECT (sink, "[fd %5d] client %p is too slow, removing",
|
|
client->fd.fd, client);
|
|
/* remove the client, the fd set will be cleared and the select thread
|
|
* will be signaled */
|
|
client->status = GST_CLIENT_STATUS_SLOW;
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
/* set client to invalid position while being removed */
|
|
client->bufpos = -1;
|
|
need_signal = TRUE;
|
|
} else if (client->bufpos == 0 || client->new_connection) {
|
|
/* can send data to this client now. need to signal the select thread that
|
|
* the fd_set changed */
|
|
gst_fdset_fd_ctl_write (sink->fdset, &client->fd, TRUE);
|
|
need_signal = TRUE;
|
|
}
|
|
/* keep track of maximum buffer usage */
|
|
if (client->bufpos > max_buffer_usage) {
|
|
max_buffer_usage = client->bufpos;
|
|
}
|
|
}
|
|
|
|
/* make sure we respect bytes-min, buffers-min and time-min when they are set */
|
|
{
|
|
gint usage, max;
|
|
|
|
GST_LOG_OBJECT (sink,
|
|
"extending queue %d to respect time_min %" GST_TIME_FORMAT
|
|
", bytes_min %d, buffers_min %d", max_buffer_usage,
|
|
GST_TIME_ARGS (sink->time_min), sink->bytes_min, sink->buffers_min);
|
|
|
|
/* get index where the limits are ok, we don't really care if all limits
|
|
* are ok, we just queue as much as we need. We also don't compare against
|
|
* the max limits. */
|
|
find_limits (sink, &usage, sink->bytes_min, sink->buffers_min,
|
|
sink->time_min, &max, -1, -1, -1);
|
|
|
|
max_buffer_usage = MAX (max_buffer_usage, usage + 1);
|
|
GST_LOG_OBJECT (sink, "extended queue to %d", max_buffer_usage);
|
|
}
|
|
|
|
/* now look for sync points and make sure there is at least one
|
|
* sync point in the queue. We only do this if the LATEST_KEYFRAME
|
|
* mode is selected */
|
|
if (sink->def_sync_method == GST_SYNC_METHOD_LATEST_KEYFRAME) {
|
|
/* no point in searching beyond the queue length */
|
|
gint limit = queuelen;
|
|
GstBuffer *buf;
|
|
|
|
/* no point in searching beyond the soft-max if any. */
|
|
if (sink->units_soft_max > 0) {
|
|
limit = MIN (limit, sink->units_soft_max);
|
|
}
|
|
GST_LOG_OBJECT (sink, "extending queue to include sync point, now at %d",
|
|
max_buffer_usage);
|
|
for (i = 0; i < limit; i++) {
|
|
buf = g_array_index (sink->bufqueue, GstBuffer *, i);
|
|
if (is_sync_frame (sink, buf)) {
|
|
/* found a sync frame, now extend the buffer usage to
|
|
* include at least this frame. */
|
|
max_buffer_usage = MAX (max_buffer_usage, i);
|
|
break;
|
|
}
|
|
}
|
|
GST_LOG_OBJECT (sink, "max buffer usage is now %d", max_buffer_usage);
|
|
}
|
|
|
|
GST_LOG_OBJECT (sink, "len %d, usage %d", queuelen, max_buffer_usage);
|
|
|
|
/* nobody is referencing units after max_buffer_usage so we can
|
|
* remove them from the queue. We remove them in reverse order as
|
|
* this is the most optimal for GArray. */
|
|
for (i = queuelen - 1; i > max_buffer_usage; i--) {
|
|
GstBuffer *old;
|
|
|
|
/* queue exceeded max size */
|
|
queuelen--;
|
|
old = g_array_index (sink->bufqueue, GstBuffer *, i);
|
|
sink->bufqueue = g_array_remove_index (sink->bufqueue, i);
|
|
|
|
/* unref tail buffer */
|
|
gst_buffer_unref (old);
|
|
}
|
|
/* save for stats */
|
|
sink->buffers_queued = max_buffer_usage;
|
|
CLIENTS_UNLOCK (sink);
|
|
|
|
/* and send a signal to thread if fd_set changed */
|
|
if (need_signal) {
|
|
SEND_COMMAND (sink, CONTROL_RESTART);
|
|
}
|
|
}
|
|
|
|
/* Handle the clients. Basically does a blocking select for one
|
|
* of the client fds to become read or writable. We also have a
|
|
* filedescriptor to receive commands on that we need to check.
|
|
*
|
|
* After going out of the select call, we read and write to all
|
|
* clients that can do so. Badly behaving clients are put on a
|
|
* garbage list and removed.
|
|
*/
|
|
static void
|
|
gst_multi_fd_sink_handle_clients (GstMultiFdSink * sink)
|
|
{
|
|
int result;
|
|
GList *clients, *next;
|
|
gboolean try_again;
|
|
GstMultiFdSinkClass *fclass;
|
|
|
|
fclass = GST_MULTI_FD_SINK_GET_CLASS (sink);
|
|
|
|
do {
|
|
gboolean stop = FALSE;
|
|
|
|
try_again = FALSE;
|
|
|
|
/* check for:
|
|
* - server socket input (ie, new client connections)
|
|
* - client socket input (ie, clients saying goodbye)
|
|
* - client socket output (ie, client reads) */
|
|
GST_LOG_OBJECT (sink, "waiting on action on fdset");
|
|
result = gst_fdset_wait (sink->fdset, -1);
|
|
|
|
/* < 0 is an error, 0 just means a timeout happened, which is impossible */
|
|
if (result < 0) {
|
|
GST_WARNING_OBJECT (sink, "wait failed: %s (%d)", g_strerror (errno),
|
|
errno);
|
|
if (errno == EBADF) {
|
|
/* ok, so one or more of the fds is invalid. We loop over them to find
|
|
* the ones that give an error to the F_GETFL fcntl. */
|
|
CLIENTS_LOCK (sink);
|
|
for (clients = sink->clients; clients; clients = next) {
|
|
GstTCPClient *client;
|
|
int fd;
|
|
long flags;
|
|
int res;
|
|
|
|
client = (GstTCPClient *) clients->data;
|
|
next = g_list_next (clients);
|
|
|
|
fd = client->fd.fd;
|
|
|
|
res = fcntl (fd, F_GETFL, &flags);
|
|
if (res == -1) {
|
|
GST_WARNING_OBJECT (sink, "fnctl failed for %d, removing: %s (%d)",
|
|
fd, g_strerror (errno), errno);
|
|
if (errno == EBADF) {
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
}
|
|
}
|
|
}
|
|
CLIENTS_UNLOCK (sink);
|
|
/* after this, go back in the select loop as the read/writefds
|
|
* are not valid */
|
|
try_again = TRUE;
|
|
} else if (errno == EINTR) {
|
|
/* interrupted system call, just redo the select */
|
|
try_again = TRUE;
|
|
} else {
|
|
/* this is quite bad... */
|
|
GST_ELEMENT_ERROR (sink, RESOURCE, READ, (NULL),
|
|
("select failed: %s (%d)", g_strerror (errno), errno));
|
|
return;
|
|
}
|
|
} else {
|
|
GST_LOG_OBJECT (sink, "wait done: %d sockets with events", result);
|
|
/* read all commands */
|
|
if (gst_fdset_fd_can_read (sink->fdset, &READ_SOCKET (sink))) {
|
|
GST_LOG_OBJECT (sink, "have a command");
|
|
while (TRUE) {
|
|
gchar command;
|
|
int res;
|
|
|
|
READ_COMMAND (sink, command, res);
|
|
if (res < 0) {
|
|
GST_LOG_OBJECT (sink, "no more commands");
|
|
/* no more commands */
|
|
break;
|
|
}
|
|
|
|
switch (command) {
|
|
case CONTROL_RESTART:
|
|
GST_LOG_OBJECT (sink, "restart");
|
|
/* need to restart the select call as the fd_set changed */
|
|
/* if other file descriptors than the READ_SOCKET had activity,
|
|
* we don't restart just yet, but handle the other clients first
|
|
*/
|
|
if (result == 1)
|
|
try_again = TRUE;
|
|
break;
|
|
case CONTROL_STOP:
|
|
/* break out of the select loop */
|
|
GST_LOG_OBJECT (sink, "stop");
|
|
/* stop this function */
|
|
stop = TRUE;
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (sink, "unkown");
|
|
g_warning ("multifdsink: unknown control message received");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (stop) {
|
|
return;
|
|
}
|
|
} while (try_again);
|
|
|
|
/* subclasses can check fdset with this virtual function */
|
|
if (fclass->wait)
|
|
fclass->wait (sink, sink->fdset);
|
|
|
|
/* Check the clients */
|
|
CLIENTS_LOCK (sink);
|
|
for (clients = sink->clients; clients; clients = next) {
|
|
GstTCPClient *client;
|
|
|
|
client = (GstTCPClient *) clients->data;
|
|
next = g_list_next (clients);
|
|
|
|
if (client->status != GST_CLIENT_STATUS_OK) {
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
continue;
|
|
}
|
|
|
|
if (gst_fdset_fd_has_closed (sink->fdset, &client->fd)) {
|
|
client->status = GST_CLIENT_STATUS_CLOSED;
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
continue;
|
|
}
|
|
if (gst_fdset_fd_has_error (sink->fdset, &client->fd)) {
|
|
GST_WARNING_OBJECT (sink, "gst_fdset_fd_has_error for %d", client->fd);
|
|
client->status = GST_CLIENT_STATUS_ERROR;
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
continue;
|
|
}
|
|
if (gst_fdset_fd_can_read (sink->fdset, &client->fd)) {
|
|
/* handle client read */
|
|
if (!gst_multi_fd_sink_handle_client_read (sink, client)) {
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
continue;
|
|
}
|
|
}
|
|
if (gst_fdset_fd_can_write (sink->fdset, &client->fd)) {
|
|
/* handle client write */
|
|
if (!gst_multi_fd_sink_handle_client_write (sink, client)) {
|
|
gst_multi_fd_sink_remove_client_link (sink, clients);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
CLIENTS_UNLOCK (sink);
|
|
}
|
|
|
|
/* 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_fd_sink_thread (GstMultiFdSink * sink)
|
|
{
|
|
while (sink->running) {
|
|
gst_multi_fd_sink_handle_clients (sink);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_multi_fd_sink_render (GstBaseSink * bsink, GstBuffer * buf)
|
|
{
|
|
GstMultiFdSink *sink;
|
|
gboolean in_caps;
|
|
GstCaps *bufcaps, *padcaps;
|
|
|
|
sink = GST_MULTI_FD_SINK (bsink);
|
|
|
|
g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_MULTI_FD_SINK_OPEN),
|
|
GST_FLOW_WRONG_STATE);
|
|
|
|
/* since we check every buffer for streamheader caps, we need to make
|
|
* sure every buffer has caps set */
|
|
bufcaps = gst_buffer_get_caps (buf);
|
|
padcaps = GST_PAD_CAPS (GST_BASE_SINK_PAD (bsink));
|
|
|
|
/* make sure we have caps on the pad */
|
|
if (!padcaps && !bufcaps)
|
|
goto no_caps;
|
|
|
|
/* stamp the buffer with previous caps if no caps set */
|
|
if (!bufcaps) {
|
|
if (!gst_buffer_is_metadata_writable (buf)) {
|
|
/* metadata is not writable, copy will be made and original buffer
|
|
* will be unreffed so we need to ref so that we don't lose the
|
|
* buffer in the render method. */
|
|
gst_buffer_ref (buf);
|
|
/* the new buffer is ours only, we keep it out of the scope of this
|
|
* function */
|
|
buf = gst_buffer_make_metadata_writable (buf);
|
|
} else {
|
|
/* else the metadata is writable, we ref because we keep the buffer
|
|
* out of the scope of this method */
|
|
gst_buffer_ref (buf);
|
|
}
|
|
/* buffer metadata is writable now, set the caps */
|
|
gst_buffer_set_caps (buf, padcaps);
|
|
} else {
|
|
gst_caps_unref (bufcaps);
|
|
|
|
/* since we keep this buffer out of the scope of this method */
|
|
gst_buffer_ref (buf);
|
|
}
|
|
|
|
in_caps = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
|
|
|
|
GST_LOG_OBJECT (sink, "received buffer %p, in_caps: %d", buf, in_caps);
|
|
|
|
/* if we get IN_CAPS buffers, but the previous buffer was not IN_CAPS,
|
|
* it means we're getting new streamheader buffers, and we should clear
|
|
* the old ones */
|
|
if (in_caps && sink->previous_buffer_in_caps == FALSE) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"receiving new IN_CAPS buffers, clearing old streamheader");
|
|
g_slist_foreach (sink->streamheader, (GFunc) gst_mini_object_unref, NULL);
|
|
g_slist_free (sink->streamheader);
|
|
sink->streamheader = NULL;
|
|
}
|
|
|
|
/* save the current in_caps */
|
|
sink->previous_buffer_in_caps = in_caps;
|
|
|
|
/* if the incoming buffer is marked as IN CAPS, then we assume for now
|
|
* it's a streamheader that needs to be sent to each new client, so we
|
|
* put it on our internal list of streamheader buffers.
|
|
* FIXME: we could check if the buffer's contents are in fact part of the
|
|
* current streamheader.
|
|
*
|
|
* We don't send the buffer to the client, since streamheaders are sent
|
|
* separately when necessary. */
|
|
if (in_caps) {
|
|
GST_DEBUG_OBJECT (sink,
|
|
"appending IN_CAPS buffer with length %d to streamheader",
|
|
GST_BUFFER_SIZE (buf));
|
|
sink->streamheader = g_slist_append (sink->streamheader, buf);
|
|
} else {
|
|
/* queue the buffer, this is a regular data buffer. */
|
|
gst_multi_fd_sink_queue_buffer (sink, buf);
|
|
|
|
sink->bytes_to_serve += GST_BUFFER_SIZE (buf);
|
|
}
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERRORS */
|
|
no_caps:
|
|
{
|
|
GST_ELEMENT_ERROR (sink, CORE, NEGOTIATION, (NULL),
|
|
("Received first buffer without caps set"));
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_multi_fd_sink_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMultiFdSink *multifdsink;
|
|
|
|
multifdsink = GST_MULTI_FD_SINK (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROTOCOL:
|
|
multifdsink->protocol = g_value_get_enum (value);
|
|
break;
|
|
case PROP_MODE:
|
|
multifdsink->mode = g_value_get_enum (value);
|
|
break;
|
|
case PROP_BUFFERS_MAX:
|
|
multifdsink->units_max = g_value_get_int (value);
|
|
break;
|
|
case PROP_BUFFERS_SOFT_MAX:
|
|
multifdsink->units_soft_max = g_value_get_int (value);
|
|
break;
|
|
case PROP_TIME_MIN:
|
|
multifdsink->time_min = g_value_get_int64 (value);
|
|
break;
|
|
case PROP_BYTES_MIN:
|
|
multifdsink->bytes_min = g_value_get_int (value);
|
|
break;
|
|
case PROP_BUFFERS_MIN:
|
|
multifdsink->buffers_min = g_value_get_int (value);
|
|
break;
|
|
case PROP_UNIT_TYPE:
|
|
multifdsink->unit_type = g_value_get_enum (value);
|
|
break;
|
|
case PROP_UNITS_MAX:
|
|
multifdsink->units_max = g_value_get_int (value);
|
|
break;
|
|
case PROP_UNITS_SOFT_MAX:
|
|
multifdsink->units_soft_max = g_value_get_int (value);
|
|
break;
|
|
case PROP_RECOVER_POLICY:
|
|
multifdsink->recover_policy = g_value_get_enum (value);
|
|
break;
|
|
case PROP_TIMEOUT:
|
|
multifdsink->timeout = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_SYNC_METHOD:
|
|
multifdsink->def_sync_method = g_value_get_enum (value);
|
|
break;
|
|
case PROP_BURST_UNIT:
|
|
multifdsink->def_burst_unit = g_value_get_enum (value);
|
|
break;
|
|
case PROP_BURST_VALUE:
|
|
multifdsink->def_burst_value = g_value_get_uint64 (value);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_multi_fd_sink_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstMultiFdSink *multifdsink;
|
|
|
|
multifdsink = GST_MULTI_FD_SINK (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROTOCOL:
|
|
g_value_set_enum (value, multifdsink->protocol);
|
|
break;
|
|
case PROP_MODE:
|
|
g_value_set_enum (value, multifdsink->mode);
|
|
break;
|
|
case PROP_BUFFERS_MAX:
|
|
g_value_set_int (value, multifdsink->units_max);
|
|
break;
|
|
case PROP_BUFFERS_SOFT_MAX:
|
|
g_value_set_int (value, multifdsink->units_soft_max);
|
|
break;
|
|
case PROP_TIME_MIN:
|
|
g_value_set_int64 (value, multifdsink->time_min);
|
|
break;
|
|
case PROP_BYTES_MIN:
|
|
g_value_set_int (value, multifdsink->bytes_min);
|
|
break;
|
|
case PROP_BUFFERS_MIN:
|
|
g_value_set_int (value, multifdsink->buffers_min);
|
|
break;
|
|
case PROP_BUFFERS_QUEUED:
|
|
g_value_set_uint (value, multifdsink->buffers_queued);
|
|
break;
|
|
case PROP_BYTES_QUEUED:
|
|
g_value_set_uint (value, multifdsink->bytes_queued);
|
|
break;
|
|
case PROP_TIME_QUEUED:
|
|
g_value_set_uint64 (value, multifdsink->time_queued);
|
|
break;
|
|
case PROP_UNIT_TYPE:
|
|
g_value_set_enum (value, multifdsink->unit_type);
|
|
break;
|
|
case PROP_UNITS_MAX:
|
|
g_value_set_int (value, multifdsink->units_max);
|
|
break;
|
|
case PROP_UNITS_SOFT_MAX:
|
|
g_value_set_int (value, multifdsink->units_soft_max);
|
|
break;
|
|
case PROP_RECOVER_POLICY:
|
|
g_value_set_enum (value, multifdsink->recover_policy);
|
|
break;
|
|
case PROP_TIMEOUT:
|
|
g_value_set_uint64 (value, multifdsink->timeout);
|
|
break;
|
|
case PROP_SYNC_METHOD:
|
|
g_value_set_enum (value, multifdsink->def_sync_method);
|
|
break;
|
|
case PROP_BYTES_TO_SERVE:
|
|
g_value_set_uint64 (value, multifdsink->bytes_to_serve);
|
|
break;
|
|
case PROP_BYTES_SERVED:
|
|
g_value_set_uint64 (value, multifdsink->bytes_served);
|
|
break;
|
|
case PROP_BURST_UNIT:
|
|
g_value_set_enum (value, multifdsink->def_burst_unit);
|
|
break;
|
|
case PROP_BURST_VALUE:
|
|
g_value_set_uint64 (value, multifdsink->def_burst_value);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/* create a socket for sending to remote machine */
|
|
static gboolean
|
|
gst_multi_fd_sink_start (GstBaseSink * bsink)
|
|
{
|
|
GstMultiFdSinkClass *fclass;
|
|
int control_socket[2];
|
|
GstMultiFdSink *this;
|
|
|
|
if (GST_OBJECT_FLAG_IS_SET (bsink, GST_MULTI_FD_SINK_OPEN))
|
|
return TRUE;
|
|
|
|
this = GST_MULTI_FD_SINK (bsink);
|
|
fclass = GST_MULTI_FD_SINK_GET_CLASS (this);
|
|
|
|
GST_INFO_OBJECT (this, "starting in mode %d", this->mode);
|
|
this->fdset = gst_fdset_new (this->mode);
|
|
|
|
if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_socket) < 0)
|
|
goto socket_pair;
|
|
|
|
READ_SOCKET (this).fd = control_socket[0];
|
|
WRITE_SOCKET (this).fd = control_socket[1];
|
|
|
|
gst_fdset_add_fd (this->fdset, &READ_SOCKET (this));
|
|
gst_fdset_fd_ctl_read (this->fdset, &READ_SOCKET (this), TRUE);
|
|
|
|
fcntl (READ_SOCKET (this).fd, F_SETFL, O_NONBLOCK);
|
|
fcntl (WRITE_SOCKET (this).fd, F_SETFL, O_NONBLOCK);
|
|
|
|
this->streamheader = NULL;
|
|
this->bytes_to_serve = 0;
|
|
this->bytes_served = 0;
|
|
|
|
if (fclass->init) {
|
|
fclass->init (this);
|
|
}
|
|
|
|
this->running = TRUE;
|
|
this->thread = g_thread_create ((GThreadFunc) gst_multi_fd_sink_thread,
|
|
this, TRUE, NULL);
|
|
|
|
GST_OBJECT_FLAG_SET (this, GST_MULTI_FD_SINK_OPEN);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
socket_pair:
|
|
{
|
|
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ_WRITE, (NULL),
|
|
GST_ERROR_SYSTEM);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
multifdsink_hash_remove (gpointer key, gpointer value, gpointer data)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_multi_fd_sink_stop (GstBaseSink * bsink)
|
|
{
|
|
GstMultiFdSinkClass *fclass;
|
|
GstMultiFdSink *this;
|
|
GstBuffer *buf;
|
|
int i;
|
|
|
|
this = GST_MULTI_FD_SINK (bsink);
|
|
fclass = GST_MULTI_FD_SINK_GET_CLASS (this);
|
|
|
|
if (!GST_OBJECT_FLAG_IS_SET (bsink, GST_MULTI_FD_SINK_OPEN))
|
|
return TRUE;
|
|
|
|
this->running = FALSE;
|
|
|
|
SEND_COMMAND (this, CONTROL_STOP);
|
|
if (this->thread) {
|
|
GST_DEBUG_OBJECT (this, "joining thread");
|
|
g_thread_join (this->thread);
|
|
GST_DEBUG_OBJECT (this, "joined thread");
|
|
this->thread = NULL;
|
|
}
|
|
|
|
/* free the clients */
|
|
gst_multi_fd_sink_clear (this);
|
|
|
|
close (READ_SOCKET (this).fd);
|
|
close (WRITE_SOCKET (this).fd);
|
|
|
|
if (this->streamheader) {
|
|
g_slist_foreach (this->streamheader, (GFunc) gst_mini_object_unref, NULL);
|
|
g_slist_free (this->streamheader);
|
|
this->streamheader = NULL;
|
|
}
|
|
|
|
if (fclass->close)
|
|
fclass->close (this);
|
|
|
|
if (this->fdset) {
|
|
gst_fdset_remove_fd (this->fdset, &READ_SOCKET (this));
|
|
gst_fdset_free (this->fdset);
|
|
this->fdset = NULL;
|
|
}
|
|
g_hash_table_foreach_remove (this->fd_hash, multifdsink_hash_remove, this);
|
|
|
|
/* remove all queued buffers */
|
|
if (this->bufqueue) {
|
|
GST_DEBUG_OBJECT (this, "Emptying bufqueue with %d buffers",
|
|
this->bufqueue->len);
|
|
for (i = this->bufqueue->len - 1; i >= 0; --i) {
|
|
buf = g_array_index (this->bufqueue, GstBuffer *, i);
|
|
GST_LOG_OBJECT (this, "Removing buffer %p (%d) with refcount %d", buf, i,
|
|
GST_MINI_OBJECT_REFCOUNT (buf));
|
|
gst_buffer_unref (buf);
|
|
this->bufqueue = g_array_remove_index (this->bufqueue, i);
|
|
}
|
|
/* freeing the array is done in _finalize */
|
|
}
|
|
GST_OBJECT_FLAG_UNSET (this, GST_MULTI_FD_SINK_OPEN);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_multi_fd_sink_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstMultiFdSink *sink;
|
|
GstStateChangeReturn ret;
|
|
|
|
sink = GST_MULTI_FD_SINK (element);
|
|
|
|
/* we disallow changing the state from the streaming thread */
|
|
if (g_thread_self () == sink->thread)
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!gst_multi_fd_sink_start (GST_BASE_SINK (sink)))
|
|
goto start_failed;
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
gst_multi_fd_sink_stop (GST_BASE_SINK (sink));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
start_failed:
|
|
{
|
|
/* error message was posted */
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|