mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-22 16:26:39 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/tcp/gstmultifdsink.c
Andoni Morales Alastruey 8c13488022 multifdsink: disconnect inactive clients in the select loop too 
Clients are usually disconnected in the streaming thread if their inactivity
is bigger than the timeout. If no new buffers are to be rendered in the sink,
these clients will never be disconnected and for that reason it should be
handled in the select() loop too.
2011-03-10 15:10:51 +01:00

3015 lines
98 KiB
C
Raw Blame History

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
* Copyright (C) 2006 Wim Taymans <wim at fluendo dot com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-multifdsink
* @see_also: tcpserversink
*
* This plugin writes incoming data to a set of file descriptors. The
* file descriptors can be added to multifdsink by emitting the #GstMultiFdSink::add signal.
* For each descriptor added, the #GstMultiFdSink::client-added signal will be called.
*
* As of version 0.10.8, a client can also be added with the #GstMultiFdSink::add-full signal
* that allows for more control over what and how much data a client
* initially receives.
*
* Clients can be removed from multifdsink by emitting the #GstMultiFdSink::remove signal. For
* each descriptor removed, the #GstMultiFdSink::client-removed signal will be called. The
* #GstMultiFdSink::client-removed signal can also be fired when multifdsink decides that a
* client is not active anymore or, depending on the value of the
* #GstMultiFdSink:recover-policy property, if the client is reading too slowly.
* In all cases, multifdsink will never close a file descriptor itself.
* The user of multifdsink is responsible for closing all file descriptors.
* This can for example be done in response to the #GstMultiFdSink::client-fd-removed signal.
* Note that multifdsink still has a reference to the file descriptor when the
* #GstMultiFdSink::client-removed signal is emitted, so that "get-stats" can be performed on
* the descriptor; it is therefore not safe to close the file descriptor in
* the #GstMultiFdSink::client-removed signal handler, and you should use the
* #GstMultiFdSink::client-fd-removed signal to safely close the fd.
*
* Multifdsink internally keeps a queue of the incoming buffers and uses a
* separate thread to send the buffers to the clients. This ensures that no
* client write can block the pipeline and that clients can read with different
* speeds.
*
* When adding a client to multifdsink, the #GstMultiFdSink:sync-method property will define
* which buffer in the queued buffers will be sent first to the client. Clients
* can be sent the most recent buffer (which might not be decodable by the
* client if it is not a keyframe), the next keyframe received in
* multifdsink (which can take some time depending on the keyframe rate), or the
* last received keyframe (which will cause a simple burst-on-connect).
* Multifdsink will always keep at least one keyframe in its internal buffers
* when the sync-mode is set to latest-keyframe.
*
* As of version 0.10.8, there are additional values for the #GstMultiFdSink:sync-method
* property to allow finer control over burst-on-connect behaviour. By selecting
* the 'burst' method a minimum burst size can be chosen, 'burst-keyframe'
* additionally requires that the burst begin with a keyframe, and
* 'burst-with-keyframe' attempts to burst beginning with a keyframe, but will
* prefer a minimum burst size even if it requires not starting with a keyframe.
*
* Multifdsink can be instructed to keep at least a minimum amount of data
* expressed in time or byte units in its internal queues with the the
* #GstMultiFdSink:time-min and #GstMultiFdSink:bytes-min properties respectively.
* These properties are useful if the application adds clients with the
* #GstMultiFdSink::add-full signal to make sure that a burst connect can
* actually be honored.
*
* When streaming data, clients are allowed to read at a different rate than
* the rate at which multifdsink receives data. If the client is reading too
* fast, no data will be send to the client until multifdsink receives more
* data. If the client, however, reads too slowly, data for that client will be
* queued up in multifdsink. Two properties control the amount of data
* (buffers) that is queued in multifdsink: #GstMultiFdSink:buffers-max and
* #GstMultiFdSink:buffers-soft-max. A client that falls behind by
* #GstMultiFdSink:buffers-max is removed from multifdsink forcibly.
*
* A client with a lag of at least #GstMultiFdSink:buffers-soft-max enters the recovery
* procedure which is controlled with the #GstMultiFdSink:recover-policy property.
* A recover policy of NONE will do nothing, RESYNC_LATEST will send the most recently
* received buffer as the next buffer for the client, RESYNC_SOFT_LIMIT
* positions the client to the soft limit in the buffer queue and
* RESYNC_KEYFRAME positions the client at the most recent keyframe in the
* buffer queue.
*
* multifdsink will by default synchronize on the clock before serving the
* buffers to the clients. This behaviour can be disabled by setting the sync
* property to FALSE. Multifdsink will by default not do QoS and will never
* drop late buffers.
*
* Last reviewed on 2006-09-12 (0.10.10)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst-i18n-plugin.h>
#include <sys/ioctl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#ifdef HAVE_FIONREAD_IN_SYS_FILIO
#include <sys/filio.h>
#endif
#include "gstmultifdsink.h"
#include "gsttcp-marshal.h"
#define NOT_IMPLEMENTED 0
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (multifdsink_debug);
#define GST_CAT_DEFAULT (multifdsink_debug)
/* MultiFdSink signals and args */
enum
{
/* methods */
SIGNAL_ADD,
SIGNAL_ADD_BURST,
SIGNAL_REMOVE,
SIGNAL_REMOVE_FLUSH,
SIGNAL_CLEAR,
SIGNAL_GET_STATS,
/* signals */
SIGNAL_CLIENT_ADDED,
SIGNAL_CLIENT_REMOVED,
SIGNAL_CLIENT_FD_REMOVED,
LAST_SIGNAL
};
/* this is really arbitrarily chosen */
#define DEFAULT_PROTOCOL GST_TCP_PROTOCOL_NONE
#define DEFAULT_MODE 1
#define DEFAULT_BUFFERS_MAX -1
#define DEFAULT_BUFFERS_SOFT_MAX -1
#define DEFAULT_TIME_MIN -1
#define DEFAULT_BYTES_MIN -1
#define DEFAULT_BUFFERS_MIN -1
#define DEFAULT_UNIT_TYPE GST_TCP_UNIT_TYPE_BUFFERS
#define DEFAULT_UNITS_MAX -1
#define DEFAULT_UNITS_SOFT_MAX -1
#define DEFAULT_RECOVER_POLICY GST_RECOVER_POLICY_NONE
#define DEFAULT_TIMEOUT 0
#define DEFAULT_SYNC_METHOD GST_SYNC_METHOD_LATEST
#define DEFAULT_BURST_UNIT GST_TCP_UNIT_TYPE_UNDEFINED
#define DEFAULT_BURST_VALUE 0
#define DEFAULT_QOS_DSCP -1
#define DEFAULT_HANDLE_READ TRUE
#define DEFAULT_RESEND_STREAMHEADER TRUE
enum
{
PROP_0,
PROP_PROTOCOL,
PROP_MODE,
PROP_BUFFERS_QUEUED,
PROP_BYTES_QUEUED,
PROP_TIME_QUEUED,
PROP_UNIT_TYPE,
PROP_UNITS_MAX,
PROP_UNITS_SOFT_MAX,
PROP_BUFFERS_MAX,
PROP_BUFFERS_SOFT_MAX,
PROP_TIME_MIN,
PROP_BYTES_MIN,
PROP_BUFFERS_MIN,
PROP_RECOVER_POLICY,
PROP_TIMEOUT,
PROP_SYNC_METHOD,
PROP_BYTES_TO_SERVE,
PROP_BYTES_SERVED,
PROP_BURST_UNIT,
PROP_BURST_VALUE,
PROP_QOS_DSCP,
PROP_HANDLE_READ,
PROP_RESEND_STREAMHEADER,
PROP_NUM_FDS,
PROP_LAST
};
/* For backward compat, we can't really select the poll mode anymore with
* GstPoll. */
#define GST_TYPE_FDSET_MODE (gst_fdset_mode_get_type())
static GType
gst_fdset_mode_get_type (void)
{
static GType fdset_mode_type = 0;
static const GEnumValue fdset_mode[] = {
{0, "Select", "select"},
{1, "Poll", "poll"},
{2, "EPoll", "epoll"},
{0, NULL, NULL},
};
if (!fdset_mode_type) {
fdset_mode_type = g_enum_register_static ("GstFDSetMode", fdset_mode);
}
return fdset_mode_type;
}
#define GST_TYPE_RECOVER_POLICY (gst_recover_policy_get_type())
static GType
gst_recover_policy_get_type (void)
{
static GType recover_policy_type = 0;
static const GEnumValue recover_policy[] = {
{GST_RECOVER_POLICY_NONE,
"Do not try to recover", "none"},
{GST_RECOVER_POLICY_RESYNC_LATEST,
"Resync client to latest buffer", "latest"},
{GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT,
"Resync client to soft limit", "soft-limit"},
{GST_RECOVER_POLICY_RESYNC_KEYFRAME,
"Resync client to most recent keyframe", "keyframe"},
{0, NULL, NULL},
};
if (!recover_policy_type) {
recover_policy_type =
g_enum_register_static ("GstRecoverPolicy", recover_policy);
}
return recover_policy_type;
}
#define GST_TYPE_SYNC_METHOD (gst_sync_method_get_type())
static GType
gst_sync_method_get_type (void)
{
static GType sync_method_type = 0;
static const GEnumValue sync_method[] = {
{GST_SYNC_METHOD_LATEST,
"Serve starting from the latest buffer", "latest"},
{GST_SYNC_METHOD_NEXT_KEYFRAME,
"Serve starting from the next keyframe", "next-keyframe"},
{GST_SYNC_METHOD_LATEST_KEYFRAME,
"Serve everything since the latest keyframe (burst)",
"latest-keyframe"},
{GST_SYNC_METHOD_BURST, "Serve burst-value data to client", "burst"},
{GST_SYNC_METHOD_BURST_KEYFRAME,
"Serve burst-value data starting on a keyframe",
"burst-keyframe"},
{GST_SYNC_METHOD_BURST_WITH_KEYFRAME,
"Serve burst-value data preferably starting on a keyframe",
"burst-with-keyframe"},
{0, NULL, NULL},
};
if (!sync_method_type) {
sync_method_type = g_enum_register_static ("GstSyncMethod", sync_method);
}
return sync_method_type;
}
#define GST_TYPE_UNIT_TYPE (gst_unit_type_get_type())
static GType
gst_unit_type_get_type (void)
{
static GType unit_type_type = 0;
static const GEnumValue unit_type[] = {
{GST_TCP_UNIT_TYPE_UNDEFINED, "Undefined", "undefined"},
{GST_TCP_UNIT_TYPE_BUFFERS, "Buffers", "buffers"},
{GST_TCP_UNIT_TYPE_BYTES, "Bytes", "bytes"},
{GST_TCP_UNIT_TYPE_TIME, "Time", "time"},
{0, NULL, NULL},
};
if (!unit_type_type) {
unit_type_type = g_enum_register_static ("GstTCPUnitType", unit_type);
}
return unit_type_type;
}
#define GST_TYPE_CLIENT_STATUS (gst_client_status_get_type())
static GType
gst_client_status_get_type (void)
{
static GType client_status_type = 0;
static const GEnumValue client_status[] = {
{GST_CLIENT_STATUS_OK, "ok", "ok"},
{GST_CLIENT_STATUS_CLOSED, "Closed", "closed"},
{GST_CLIENT_STATUS_REMOVED, "Removed", "removed"},
{GST_CLIENT_STATUS_SLOW, "Too slow", "slow"},
{GST_CLIENT_STATUS_ERROR, "Error", "error"},
{GST_CLIENT_STATUS_DUPLICATE, "Duplicate", "duplicate"},
{GST_CLIENT_STATUS_FLUSHING, "Flushing", "flushing"},
{0, NULL, NULL},
};
if (!client_status_type) {
client_status_type =
g_enum_register_static ("GstClientStatus", client_status);
}
return client_status_type;
}
static void gst_multi_fd_sink_finalize (GObject * object);
static void gst_multi_fd_sink_remove_client_link (GstMultiFdSink * sink,
GList * link);
static GstFlowReturn gst_multi_fd_sink_render (GstBaseSink * bsink,
GstBuffer * buf);
static GstStateChangeReturn gst_multi_fd_sink_change_state (GstElement *
element, GstStateChange transition);
static void gst_multi_fd_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_multi_fd_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
GST_BOILERPLATE (GstMultiFdSink, gst_multi_fd_sink, GstBaseSink,
GST_TYPE_BASE_SINK);
static guint gst_multi_fd_sink_signals[LAST_SIGNAL] = { 0 };
static void
gst_multi_fd_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details_simple (element_class,
"Multi filedescriptor sink", "Sink/Network",
"Send data to multiple filedescriptors",
"Thomas Vander Stichele <thomas at apestaart dot org>, "
"Wim Taymans <wim@fluendo.com>");
}
static void
gst_multi_fd_sink_class_init (GstMultiFdSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesink_class = (GstBaseSinkClass *) klass;
gobject_class->set_property = gst_multi_fd_sink_set_property;
gobject_class->get_property = gst_multi_fd_sink_get_property;
gobject_class->finalize = gst_multi_fd_sink_finalize;
g_object_class_install_property (gobject_class, PROP_PROTOCOL,
g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in"
". GDP protocol here is deprecated. Please use gdppay element.",
GST_TYPE_TCP_PROTOCOL, DEFAULT_PROTOCOL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstMultiFdSink::mode
*
* The mode for selecting activity on the fds.
*
* This property is deprecated since 0.10.18, if will now automatically
* select and use the most optimal method.
*/
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Mode",
"The mode for selecting activity on the fds (deprecated)",
GST_TYPE_FDSET_MODE, DEFAULT_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFERS_MAX,
g_param_spec_int ("buffers-max", "Buffers max",
"max number of buffers to queue for a client (-1 = no limit)", -1,
G_MAXINT, DEFAULT_BUFFERS_MAX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFERS_SOFT_MAX,
g_param_spec_int ("buffers-soft-max", "Buffers soft max",
"Recover client when going over this limit (-1 = no limit)", -1,
G_MAXINT, DEFAULT_BUFFERS_SOFT_MAX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BYTES_MIN,
g_param_spec_int ("bytes-min", "Bytes min",
"min number of bytes to queue (-1 = as little as possible)", -1,
G_MAXINT, DEFAULT_BYTES_MIN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TIME_MIN,
g_param_spec_int64 ("time-min", "Time min",
"min number of time to queue (-1 = as little as possible)", -1,
G_MAXINT64, DEFAULT_TIME_MIN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFERS_MIN,
g_param_spec_int ("buffers-min", "Buffers min",
"min number of buffers to queue (-1 = as few as possible)", -1,
G_MAXINT, DEFAULT_BUFFERS_MIN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_UNIT_TYPE,
g_param_spec_enum ("unit-type", "Units type",
"The unit to measure the max/soft-max/queued properties",
GST_TYPE_UNIT_TYPE, DEFAULT_UNIT_TYPE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_UNITS_MAX,
g_param_spec_int64 ("units-max", "Units max",
"max number of units to queue (-1 = no limit)", -1, G_MAXINT64,
DEFAULT_UNITS_MAX, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_UNITS_SOFT_MAX,
g_param_spec_int64 ("units-soft-max", "Units soft max",
"Recover client when going over this limit (-1 = no limit)", -1,
G_MAXINT64, DEFAULT_UNITS_SOFT_MAX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFERS_QUEUED,
g_param_spec_uint ("buffers-queued", "Buffers queued",
"Number of buffers currently queued", 0, G_MAXUINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
#if NOT_IMPLEMENTED
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_PARAM_STATIC_STRINGS));
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 | G_PARAM_STATIC_STRINGS));
#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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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 | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_QOS_DSCP,
g_param_spec_int ("qos-dscp", "QoS diff srv code point",
"Quality of Service, differentiated services code point (-1 default)",
-1, 63, DEFAULT_QOS_DSCP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstMultiFdSink::handle-read
*
* Handle read requests from clients and discard the data.
*
* Since: 0.10.23
*/
g_object_class_install_property (gobject_class, PROP_HANDLE_READ,
g_param_spec_boolean ("handle-read", "Handle Read",
"Handle client reads and discard the data",
DEFAULT_HANDLE_READ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstMultiFdSink::resend-streamheader
*
* Resend the streamheaders to existing clients when they change.
*
* Since: 0.10.23
*/
g_object_class_install_property (gobject_class, PROP_RESEND_STREAMHEADER,
g_param_spec_boolean ("resend-streamheader", "Resend streamheader",
"Resend the streamheader if it changes in the caps",
DEFAULT_RESEND_STREAMHEADER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NUM_FDS,
g_param_spec_uint ("num-fds", "Number of fds",
"The current number of client file descriptors.",
0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* 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_SIGNAL_ACTION, 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
* @sync: the sync method to use
* @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_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
add_full), NULL, NULL,
gst_tcp_marshal_VOID__INT_ENUM_INT_UINT64_INT_UINT64, G_TYPE_NONE, 6,
G_TYPE_INT, GST_TYPE_SYNC_METHOD, 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_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
remove), NULL, NULL, gst_tcp_marshal_VOID__INT, G_TYPE_NONE, 1,
G_TYPE_INT);
/**
* GstMultiFdSink::remove-flush:
* @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 after flushing all
* the pending data to the fd.
*/
gst_multi_fd_sink_signals[SIGNAL_REMOVE_FLUSH] =
g_signal_new ("remove-flush", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
remove_flush), 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_SIGNAL_ACTION, 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 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 (in epoch seconds), number of buffers dropped.
* All times are expressed in nanoseconds (GstClockTime).
* The array can be 0-length if the client was not found.
*/
gst_multi_fd_sink_signals[SIGNAL_GET_STATS] =
g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, 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->remove_flush = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_remove_flush);
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->qos_dscp = DEFAULT_QOS_DSCP;
this->handle_read = DEFAULT_HANDLE_READ;
this->resend_streamheader = DEFAULT_RESEND_STREAMHEADER;
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);
}
static gint
setup_dscp_client (GstMultiFdSink * sink, GstTCPClient * client)
{
gint tos;
gint ret;
union gst_sockaddr
{
struct sockaddr sa;
struct sockaddr_in6 sa_in6;
struct sockaddr_storage sa_stor;
} sa;
socklen_t slen = sizeof (sa);
gint af;
/* don't touch */
if (sink->qos_dscp < 0)
return 0;
if ((ret = getsockname (client->fd.fd, &sa.sa, &slen)) < 0) {
GST_DEBUG_OBJECT (sink, "could not get sockname: %s", g_strerror (errno));
return ret;
}
af = sa.sa.sa_family;
/* if this is an IPv4-mapped address then do IPv4 QoS */
if (af == AF_INET6) {
GST_DEBUG_OBJECT (sink, "check IP6 socket");
if (IN6_IS_ADDR_V4MAPPED (&(sa.sa_in6.sin6_addr))) {
GST_DEBUG_OBJECT (sink, "mapped to IPV4");
af = AF_INET;
}
}
/* extract and shift 6 bits of the DSCP */
tos = (sink->qos_dscp & 0x3f) << 2;
switch (af) {
case AF_INET:
ret = setsockopt (client->fd.fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos));
break;
case AF_INET6:
#ifdef IPV6_TCLASS
ret =
setsockopt (client->fd.fd, IPPROTO_IPV6, IPV6_TCLASS, &tos,
sizeof (tos));
break;
#endif
default:
ret = 0;
GST_ERROR_OBJECT (sink, "unsupported AF");
break;
}
if (ret)
GST_DEBUG_OBJECT (sink, "could not set DSCP: %s", g_strerror (errno));
return ret;
}
static void
setup_dscp (GstMultiFdSink * sink)
{
GList *clients, *next;
CLIENTS_LOCK (sink);
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
client = (GstTCPClient *) clients->data;
next = g_list_next (clients);
setup_dscp_client (sink, client);
}
CLIENTS_UNLOCK (sink);
}
/* "add-full" signal implementation */
void
gst_multi_fd_sink_add_full (GstMultiFdSink * sink, int fd,
GstSyncMethod sync_method, GstTCPUnitType min_unit, guint64 min_value,
GstTCPUnitType 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->flushcount = -1;
client->bufoffset = 0;
client->sending = NULL;
client->bytes_sent = 0;
client->dropped_buffers = 0;
client->avg_queue_size = 0;
client->first_buffer_ts = GST_CLOCK_TIME_NONE;
client->last_buffer_ts = GST_CLOCK_TIME_NONE;
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;
client->currently_removing = FALSE;
/* 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);
sink->clients_cookie++;
/* set the socket to non blocking */
res = fcntl (fd, F_SETFL, O_NONBLOCK);
/* we always read from a client */
gst_poll_add_fd (sink->fdset, &client->fd);
/* we don't try to read from write only fds */
if (sink->handle_read) {
flags = fcntl (fd, F_GETFL, 0);
if ((flags & O_ACCMODE) != O_WRONLY) {
gst_poll_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;
setup_dscp_client (sink, client);
}
gst_poll_restart (sink->fdset);
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 implementation */
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;
if (client->status != GST_CLIENT_STATUS_OK) {
GST_INFO_OBJECT (sink,
"[fd %5d] Client already disconnecting with status %d",
fd, client->status);
goto done;
}
client->status = GST_CLIENT_STATUS_REMOVED;
gst_multi_fd_sink_remove_client_link (sink, clink);
gst_poll_restart (sink->fdset);
} else {
GST_WARNING_OBJECT (sink, "[fd %5d] no client with this fd found!", fd);
}
done:
CLIENTS_UNLOCK (sink);
}
/* "remove-flush" signal implementation */
void
gst_multi_fd_sink_remove_flush (GstMultiFdSink * sink, int fd)
{
GList *clink;
GST_DEBUG_OBJECT (sink, "[fd %5d] flushing client", fd);
CLIENTS_LOCK (sink);
clink = g_hash_table_lookup (sink->fd_hash, &fd);
if (clink != NULL) {
GstTCPClient *client = (GstTCPClient *) clink->data;
if (client->status != GST_CLIENT_STATUS_OK) {
GST_INFO_OBJECT (sink,
"[fd %5d] Client already disconnecting with status %d",
fd, client->status);
goto done;
}
/* take the position of the client as the number of buffers left to flush.
* If the client was at position -1, we flush 0 buffers, 0 == flush 1
* buffer, etc... */
client->flushcount = client->bufpos + 1;
/* mark client as flushing. We can not remove the client right away because
* it might have some buffers to flush in the ->sending queue. */
client->status = GST_CLIENT_STATUS_FLUSHING;
} else {
GST_WARNING_OBJECT (sink, "[fd %5d] no client with this fd found!", fd);
}
done:
CLIENTS_UNLOCK (sink);
}
/* can be called both through the signal (i.e. from any thread) or when
* stopping, after the writing thread has shut down */
void
gst_multi_fd_sink_clear (GstMultiFdSink * sink)
{
GList *clients, *next;
guint32 cookie;
GST_DEBUG_OBJECT (sink, "clearing all clients");
CLIENTS_LOCK (sink);
restart:
cookie = sink->clients_cookie;
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
if (cookie != sink->clients_cookie) {
GST_DEBUG_OBJECT (sink, "cookie changed while removing all clients");
goto restart;
}
client = (GstTCPClient *) clients->data;
next = g_list_next (clients);
client->status = GST_CLIENT_STATUS_REMOVED;
gst_multi_fd_sink_remove_client_link (sink, clients);
}
gst_poll_restart (sink->fdset);
CLIENTS_UNLOCK (sink);
}
/* "get-stats" signal implementation
* the array returned contains:
*
* guint64 : bytes_sent
* guint64 : connect time (in nanoseconds, since Epoch)
* guint64 : disconnect time (in nanoseconds, since Epoch)
* guint64 : time the client is/was connected (in nanoseconds)
* guint64 : last activity time (in nanoseconds, since Epoch)
* guint64 : buffers dropped due to recovery
* guint64 : timestamp of the first buffer sent (in nanoseconds)
* guint64 : timestamp of the last buffer sent (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);
if (clink == NULL)
goto noclient;
client = (GstTCPClient *) clink->data;
if (client != NULL) {
GValue value = { 0 };
guint64 interval;
result = g_value_array_new (7);
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);
g_value_unset (&value);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->dropped_buffers);
result = g_value_array_append (result, &value);
g_value_unset (&value);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->first_buffer_ts);
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_buffer_ts);
result = g_value_array_append (result, &value);
}
noclient:
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-fd-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;
if (client->currently_removing) {
GST_WARNING_OBJECT (sink, "[fd %5d] client is already being removed", fd);
return;
} else {
client->currently_removing = TRUE;
}
/* 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;
case GST_CLIENT_STATUS_FLUSHING:
default:
GST_WARNING_OBJECT (sink,
"[fd %5d] removing client %p with invalid reason %d", fd, client,
client->status);
break;
}
gst_poll_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);
sink->clients_cookie++;
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_DEBUG_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_DEBUG_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_DEBUG_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 */
if (!sink->resend_streamheader) {
GST_DEBUG_OBJECT (sink,
"[fd %5d] asked to not resend the streamheader, not sending",
client->fd.fd);
send_streamheader = FALSE;
} else {
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_DEBUG_OBJECT (sink,
"[fd %5d] new streamheader different from old, sending",
client->fd.fd);
send_streamheader = TRUE;
}
}
}
}
}
/* Replace the old caps */
gst_caps_unref (client->caps);
client->caps = gst_caps_ref (caps);
}
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_DEBUG_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);
GST_DEBUG_OBJECT (sink, "%d streamheader buffers", buffers->len);
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_DEBUG_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)
/* Get the number of buffers from the buffer queue needed to satisfy
* the maximum max in the configured units.
* If units are not BUFFERS, and there are insufficient buffers in the
* queue to satify the limit, return len(queue) + 1 */
static gint
get_buffers_max (GstMultiFdSink * sink, gint64 max)
{
switch (sink->unit_type) {
case GST_TCP_UNIT_TYPE_BUFFERS:
return max;
case GST_TCP_UNIT_TYPE_TIME:
{
GstBuffer *buf;
int i;
int len;
gint64 diff;
GstClockTime first = GST_CLOCK_TIME_NONE;
len = sink->bufqueue->len;
for (i = 0; i < len; i++) {
buf = g_array_index (sink->bufqueue, GstBuffer *, i);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
if (first == -1)
first = GST_BUFFER_TIMESTAMP (buf);
diff = first - GST_BUFFER_TIMESTAMP (buf);
if (diff > max)
return i + 1;
}
}
return len + 1;
}
case GST_TCP_UNIT_TYPE_BYTES:
{
GstBuffer *buf;
int i;
int len;
gint acc = 0;
len = sink->bufqueue->len;
for (i = 0; i < len; i++) {
buf = g_array_index (sink->bufqueue, GstBuffer *, i);
acc += GST_BUFFER_SIZE (buf);
if (acc > max)
return i + 1;
}
return len + 1;
}
default:
return max;
}
}
/* 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) {
GST_LOG_OBJECT (sink, "Ts %" GST_TIME_FORMAT " on buffer",
GST_TIME_ARGS (time));
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;
} else {
GST_LOG_OBJECT (sink, "No timestamp on buffer");
}
/* 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 (GstTCPUnitType 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_TCP_UNIT_TYPE_BUFFERS:
*buffers = (gint) value;
break;
case GST_TCP_UNIT_TYPE_TIME:
*time = value;
break;
case GST_TCP_UNIT_TYPE_BYTES:
*bytes = (gint) value;
break;
case GST_TCP_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,
GstTCPUnitType min_unit, guint64 min_value, gint * max_idx,
GstTCPUnitType max_unit, guint64 max_value)
{
gint bytes_min = -1, buffers_min = -1;
gint bytes_max = -1, buffers_max = -1;
GstClockTime time_min = GST_CLOCK_TIME_NONE, time_max = GST_CLOCK_TIME_NONE;
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);
GST_DEBUG_OBJECT (sink, "queue is currently %d buffers long",
sink->bufqueue->len);
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;
gboolean flushing;
GstClockTime now;
GTimeVal nowtv;
g_get_current_time (&nowtv);
now = GST_TIMEVAL_TO_TIME (nowtv);
flushing = client->status == GST_CLIENT_STATUS_FLUSHING;
/* when using GDP, first check if we have queued caps yet */
if (sink->protocol == GST_TCP_PROTOCOL_GDP) {
/* don't need to do anything when the client is flushing */
if (!client->caps_sent && !flushing) {
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_poll_fd_ctl_write (sink->fdset, &client->fd, FALSE);
/* if we flushed out all of the client buffers, we can stop */
if (client->flushcount == 0)
goto flushed;
return TRUE;
} else {
/* client can pick a buffer from the global queue */
GstBuffer *buf;
GstClockTime timestamp;
/* for new connections, we need to find a good spot in the
* bufqueue to start streaming from */
if (client->new_connection && !flushing) {
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_poll_fd_ctl_write (sink->fdset, &client->fd, FALSE);
return TRUE;
}
}
/* we flushed all remaining buffers, no need to get a new one */
if (client->flushcount == 0)
goto flushed;
/* grab buffer */
buf = g_array_index (sink->bufqueue, GstBuffer *, client->bufpos);
client->bufpos--;
/* update stats */
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (client->first_buffer_ts == GST_CLOCK_TIME_NONE)
client->first_buffer_ts = timestamp;
if (timestamp != -1)
client->last_buffer_ts = timestamp;
/* decrease flushcount */
if (client->flushcount != -1)
client->flushcount--;
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 %" G_GSSIZE_FORMAT " 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 */
flushed:
{
GST_DEBUG_OBJECT (sink, "[fd %5d] flushed, removing", fd);
client->status = GST_CLIENT_STATUS_REMOVED;
return FALSE;
}
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 = get_buffers_max (sink, 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,
get_buffers_max (sink, 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 = get_buffers_max (sink, 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;
gint max_buffers, soft_max_buffers;
guint cookie;
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;
if (sink->units_max > 0)
max_buffers = get_buffers_max (sink, sink->units_max);
else
max_buffers = -1;
if (sink->units_soft_max > 0)
soft_max_buffers = get_buffers_max (sink, sink->units_soft_max);
else
soft_max_buffers = -1;
GST_LOG_OBJECT (sink, "Using max %d, softmax %d", max_buffers,
soft_max_buffers);
/* then loop over the clients and update the positions */
max_buffer_usage = 0;
restart:
cookie = sink->clients_cookie;
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
if (cookie != sink->clients_cookie) {
GST_DEBUG_OBJECT (sink, "Clients cookie outdated, restarting");
goto restart;
}
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 (soft_max_buffers > 0 && client->bufpos >= soft_max_buffers) {
gint newpos;
newpos = gst_multi_fd_sink_recover_client (sink, client);
if (newpos != client->bufpos) {
client->dropped_buffers += client->bufpos - newpos;
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 ((max_buffers > 0 && client->bufpos >= max_buffers) ||
(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;
/* set client to invalid position while being removed */
client->bufpos = -1;
gst_multi_fd_sink_remove_client_link (sink, clients);
need_signal = TRUE;
continue;
} 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_poll_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 or
* BURST_KEYFRAME mode is selected */
if (sink->def_sync_method == GST_SYNC_METHOD_LATEST_KEYFRAME ||
sink->def_sync_method == GST_SYNC_METHOD_BURST_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 (soft_max_buffers > 0) {
limit = MIN (limit, soft_max_buffers);
}
GST_LOG_OBJECT (sink,
"extending queue to include sync point, now at %d, limit is %d",
max_buffer_usage, limit);
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) {
gst_poll_restart (sink->fdset);
}
}
/* 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;
guint cookie;
fclass = GST_MULTI_FD_SINK_GET_CLASS (sink);
do {
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_poll_wait (sink->fdset, sink->timeout != 0 ? sink->timeout :
GST_CLOCK_TIME_NONE);
/* Handle the special case in which the sink is not receiving more buffers
* and will not disconnect innactive client in the streaming thread. */
if (G_UNLIKELY (result == 0)) {
GstClockTime now;
GTimeVal nowtv;
g_get_current_time (&nowtv);
now = GST_TIMEVAL_TO_TIME (nowtv);
CLIENTS_LOCK (sink);
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
client = (GstTCPClient *) clients->data;
next = g_list_next (clients);
if (sink->timeout > 0
&& now - client->last_activity_time > sink->timeout) {
client->status = GST_CLIENT_STATUS_SLOW;
gst_multi_fd_sink_remove_client_link (sink, clients);
}
}
CLIENTS_UNLOCK (sink);
return;
} else 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);
restart:
cookie = sink->clients_cookie;
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
int fd;
long flags;
int res;
if (cookie != sink->clients_cookie) {
GST_DEBUG_OBJECT (sink, "Cookie changed finding bad fd");
goto restart;
}
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;
/* releases the CLIENTS lock */
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 wait */
try_again = TRUE;
} else if (errno == EBUSY) {
/* the call to gst_poll_wait() was flushed */
return;
} 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);
}
} 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);
restart2:
cookie = sink->clients_cookie;
for (clients = sink->clients; clients; clients = next) {
GstTCPClient *client;
if (sink->clients_cookie != cookie) {
GST_DEBUG_OBJECT (sink, "Restarting loop, cookie out of date");
goto restart2;
}
client = (GstTCPClient *) clients->data;
next = g_list_next (clients);
if (client->status != GST_CLIENT_STATUS_FLUSHING
&& client->status != GST_CLIENT_STATUS_OK) {
gst_multi_fd_sink_remove_client_link (sink, clients);
continue;
}
if (gst_poll_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_poll_fd_has_error (sink->fdset, &client->fd)) {
GST_WARNING_OBJECT (sink, "gst_poll_fd_has_error for %d", client->fd.fd);
client->status = GST_CLIENT_STATUS_ERROR;
gst_multi_fd_sink_remove_client_link (sink, clients);
continue;
}
if (gst_poll_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_poll_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;
/* get IN_CAPS first, code below might mess with the flags */
in_caps = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_IN_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);
}
GST_LOG_OBJECT (sink, "received buffer %p, in_caps: %s, offset %"
G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT
", timestamp %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT,
buf, in_caps ? "yes" : "no", GST_BUFFER_OFFSET (buf),
GST_BUFFER_OFFSET_END (buf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* 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_int64 (value);
break;
case PROP_UNITS_SOFT_MAX:
multifdsink->units_soft_max = g_value_get_int64 (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;
case PROP_QOS_DSCP:
multifdsink->qos_dscp = g_value_get_int (value);
setup_dscp (multifdsink);
break;
case PROP_HANDLE_READ:
multifdsink->handle_read = g_value_get_boolean (value);
break;
case PROP_RESEND_STREAMHEADER:
multifdsink->resend_streamheader = g_value_get_boolean (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_int64 (value, multifdsink->units_max);
break;
case PROP_UNITS_SOFT_MAX:
g_value_set_int64 (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;
case PROP_QOS_DSCP:
g_value_set_int (value, multifdsink->qos_dscp);
break;
case PROP_HANDLE_READ:
g_value_set_boolean (value, multifdsink->handle_read);
break;
case PROP_RESEND_STREAMHEADER:
g_value_set_boolean (value, multifdsink->resend_streamheader);
break;
case PROP_NUM_FDS:
g_value_set_uint (value, g_hash_table_size (multifdsink->fd_hash));
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;
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);
if ((this->fdset = gst_poll_new (TRUE)) == NULL)
goto socket_pair;
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;
gst_poll_set_flushing (this->fdset, TRUE);
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);
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_poll_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;
}
}
Reference in a new issue View git blame Copy permalink